Means Moved By Person To Produce Suction (e.g., Squeeze Bulb, Piston, Etc.) Patents (Class 604/316)
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Patent number: 10695472Abstract: This invention relates to the design of tissue covering elements for use in vacuum assisted tissue apposition systems, wherein the geometry of the covering elements favours the application of contractile forces over compressive or extensive forces at the tissue interface.Type: GrantFiled: October 27, 2017Date of Patent: June 30, 2020Assignee: Smith & Nephew PLCInventor: Bryan Greener
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Patent number: 9028458Abstract: The illustrative embodiments described herein are directed to a manually-actuated pump and method for applying reduced pressure at a tissue site. The manually-actuated pump includes at least one variable volume chamber that is manually compressible into a plurality of positions. The manually-actuated pump includes a fixed volume chamber in communication with the at least one variable volume chamber. The manually-actuated pump also includes a filter housing having a hydrophobic filter that prevents liquid from entering the at least one variable volume chamber. The fixed volume chamber is coupled to the at least one variable volume chamber via the filter housing. The filter housing is located in between the at least one variable volume chamber and the fixed volume chamber.Type: GrantFiled: August 22, 2013Date of Patent: May 12, 2015Assignee: KCI Licensing, Inc.Inventors: Keith Patrick Heaton, Ian James Hardman
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Patent number: 9012714Abstract: A wound treatment device comprises a wound surface contacting plug and a cover for covering the wound surface and the plug, wherein said plug consists of a flat textile isolating material comprising at least one first surface layer, one second surface layer and one intermediate space arranged between said surface layers. At least the first surface layer is provided with a biocompatible surface and a structure which enables a liquid to pass and prevents a wound tissue from growing in said structure. The intermediate space is provided with isolating threads elastically holding the first surface layer and the second surface layer at a certain distance from each other.Type: GrantFiled: December 26, 2012Date of Patent: April 21, 2015Inventor: Wilhelm Fleischmann
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Patent number: 8986267Abstract: A reduced pressure apparatus includes a first casing portion and a second casing portion slidably coupled to the first casing portion such that the first casing portion is compressible into a plurality of positions relative to the second casing portion. The plurality of positions includes a fully compressed position and a fully uncompressed position. An indicator is disposed on at least one of the first casing portion and the second casing portion, the indicator being exposed when the first casing portion is in the fully uncompressed position.Type: GrantFiled: September 14, 2012Date of Patent: March 24, 2015Assignee: KCI Licensing, Inc.Inventors: Keith Patrick Heaton, Ian James Hardman, Richard Daniel John Coullhard, Timothy Mark Robinson, Christopher Brian Locke, Aidan Marcus Tout, Benjamin Andrew Pratt
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Patent number: 8834434Abstract: A surgical tissue therapy device includes a sealant layer and a collection chamber. The sealant layer functions so as to create a sealed enclosure or space between it and the surface of a patient by forming, preferably, an airtight seal around a surgical area of skin trauma. The closed incision tissue therapy device also comprises a collection chamber, which may comprise an elongate tubular chamber with a plurality of longitudinally spaced openings. The collection chamber may be configured to be in fluid communication with the sealant layer and the area of skin trauma and functions as to distribute the negative pressure applied to a surgically closed area of skin trauma. Preferably, the pressure under the sealant layer is reduced by expanding the volume of the enclosure space and thereby decreasing the density of air molecules under the sealant layer.Type: GrantFiled: October 18, 2013Date of Patent: September 16, 2014Assignee: Spiracur Inc.Inventors: Dean Hu, Moshe Pinto, Kenton Fong, Akshay Mavani, Kenneth Wu
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Patent number: 8814841Abstract: A method and apparatus for measuring a volume of a wound are described, the method comprising the steps of: applying a dressing over a wound, the volume of which is to be measured, the dressing including at least a sealing drape over the wound so as to create a sealed wound cavity; creating a vacuum in said wound cavity by vacuum pump means so as to produce a predetermined vacuum in the wound cavity; measuring a volume of air extracted from said wound cavity in producing said predetermined vacuum; and, calculating a volume of said wound.Type: GrantFiled: October 7, 2008Date of Patent: August 26, 2014Assignee: Smith & Nephew PLCInventor: Edward Hartwell
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Patent number: 8795243Abstract: A wound treatment appliance is provided for treating all or a portion of a wound. In some embodiments, the appliance comprises an impermeable flexible overlay that covers all or a portion of the wound for purposes of applying a reduced pressure to the covered portion of the wound. In other embodiments, the wound treatment appliance also includes a vacuum system to supply reduced pressure to the wound in the area under the flexible overlay. In yet other embodiments, the wound treatment appliance also includes wound packing means to prevent overgrowth of the wound or to encourage growth of the wound tissue into an absorbable matrix comprising the wound packing means. In still other embodiments, the appliance may include a suction drain. In other embodiments, the appliance may include a collection chamber to collect and store exudate from the wound. In yet other embodiments, a suction bulb may be used to provide a source of reduced pressure to an impermeable overlay that covers all or a portion of the wound.Type: GrantFiled: March 8, 2010Date of Patent: August 5, 2014Assignee: BlueSky Medical Group IncorporatedInventor: Richard Scott Weston
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Patent number: 8734409Abstract: Provided is an apparatus that includes a scaffold with a gel or liquid composition deposed on at least a portion of a luminal surface, the gel or liquid composition adapted to include microbubbles. Also provided is a system that includes a source of reduced pressure, the above scaffold, a manifold adjacent the scaffold, and a conduit for providing fluid communication between the manifold and the source of reduced pressure. Additionally provided is a method that includes implanting the above scaffold at the tissue site and disrupting a substantial portion of the microbubbles to induce fluid flow to the scaffold. Further provided is an apparatus that includes a scaffold that comprises a slowly degradable material and a quickly degradable material. Additionally provided is a system for coupling nerve tissue and a microchip assembly.Type: GrantFiled: December 29, 2009Date of Patent: May 27, 2014Assignee: KCI Licensing, Inc.Inventors: Larry D Swain, Michael E Manwaring, Douglas A. Cornet, Braden K Leung
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Publication number: 20140088521Abstract: The present invention provides a device for wound treatment, comprising a chamber that includes an inner surface and defines a treatment space, the chamber being made of a flexible, impermeable material. The device further includes a plurality of structures configured to exert mechanical stress on a wound, the plurality of structures intruding from the inner surface of the chamber into the treatment space. The device further includes a tube having a first end connected to the chamber, the tube being in fluid communication with the treatment space so as to enable at least one selected from the group of applying negative pressure to the treatment space and applying a therapeutic agent.Type: ApplicationFiled: November 27, 2013Publication date: March 27, 2014Applicant: Applied Tissue Technologies LLCInventors: Elof Eriksson, W. Robert Allison, Christian Baker
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Patent number: 8673639Abstract: Disclosed is a method for isolating stem cells. The method uses a specially designed apparatus including: a container containing an aspirate; a piston having an outer diameter corresponding to the inner diameter of the container and having at least one through-hole; and a connection tube adapted to feed an enzyme or a washing solution into the container through the through-hole, having a tip connected to the through-hole, and connected to an external tube or another container containing the enzyme or washing solution at the other end thereof. The method includes pulling the piston backward to form a negative pressure in the container containing the aspirate and to allow the enzyme or washing solution to enter the container containing the aspirate through the connection tube and the through-hole of the piston.Type: GrantFiled: November 23, 2009Date of Patent: March 18, 2014Inventor: Hee Young Lee
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Patent number: 8641692Abstract: A manually-actuated, constant reduced-pressure apparatus for use with a reduced-pressure system for treating tissue at a tissue site includes a flexible, collapsible member that is operable to move between a compressed position and an extended position. The collapsible member may be disposed between a carrier member and a slider member that move between a compressed position and an extended position. The carrier member and slider member are urged away from each other by a constant-force biasing member, e.g., a constant force coil spring. As the apparatus moves from the compressed position to the extended position, a constant reduced-pressure is generated and delivered to a reduced-pressure port. Systems, methods of manufacturing a manually-actuated, constant reduced-pressure apparatus, and methods of treating a tissue site are also provided.Type: GrantFiled: July 9, 2009Date of Patent: February 4, 2014Assignee: KCI Licensing, Inc.Inventors: Aldan Marcus Tout, Christopher Brian Locke, Timothy Mark Robinson
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Patent number: 8641691Abstract: A portable system for subatmospheric pressure therapy in connection with healing a surgical wound, includes a wound dressing dimensioned for positioning relative to a wound bed of a subject, a portable subatmospheric pressure mechanism dimensioned to be carried or worn by the subject and a container for collecting exudates from the wound bed removed under the subatmospheric pressure supplied by the subatmospheric pressure mechanism. The portable subatmospheric pressure mechanism includes a housing, a subatmospheric pressure source disposed within the housing and in fluid communication with the wound dressing to supply subatmospheric pressure to the wound dressing and a power source mounted to or within the housing for supplying power to actuate the subatmospheric pressure source.Type: GrantFiled: September 27, 2007Date of Patent: February 4, 2014Assignee: Smith & Nephew, Inc.Inventors: David Fink, David Heagle, Sharon A. Mulligan
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Patent number: 8641488Abstract: A smoke capture adapter comprising: a first adapter part having a first generally ring-shaped portion with a first cylindrical inner surface for securely engaging a laser apparatus having a beam propagation axis, the first generally ring-shaped portion being oriented such that the beam propagation axis passes through a region bound the first generally ring-shaped portion and a tubular outlet extending from said first generally ring-shaped portion for communicating with a vacuum tube; a second adapter part rotatably connected to the first adapter part and arranged to rotate generally about the beam propagation axis having a second generally ring-shaped portion adjacent the first generally ring-shaped portion, the first and second generally ring-shaped portions defining a generally toroidal cavity and an inlet in fluid communication with the cavity; the tubular outlet and inlet in fluid communication through the cavity; whereby the position of the inlet relative to the first adapter part may be adjusted by rotaType: GrantFiled: June 18, 2010Date of Patent: February 4, 2014Assignee: Buffalo Filter LLCInventors: Kyrylo Shvetsov, Anthony Lizauckas, III
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Patent number: 8613735Abstract: A suction device according to the present invention has: an outer tube connected to a fluid supply unit on a base-end side thereof and including an opening edge section; and a suction tube provided in the outer tube and connected to a negative pressure generating unit on a base-end side thereof, the suction tube including an opening edge section, wherein an annular fluid supply passage is formed between an inner peripheral surface of the outer tube and an outer peripheral surface of the suction tube, and the opening edge section of the suction tube is placed inside the opening edge section of the outer tube toward the base-end side thereof.Type: GrantFiled: July 15, 2008Date of Patent: December 24, 2013Assignee: Kyoto UniversityInventors: Hiroo Umeda, Shin-ichi Kanemaru
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Patent number: 8562576Abstract: A surgical tissue therapy device includes a sealant layer and a collection chamber. The sealant layer functions so as to create a sealed enclosure or space between it and the surface of a patient by forming, preferably, an airtight seal around a surgical area of skin trauma. The closed incision tissue therapy device also comprises a collection chamber, which may comprise an elongate tubular chamber with a plurality of longitudinally spaced openings. The collection chamber may be configured to be in fluid communication with the sealant layer and the area of skin trauma and functions as to distribute the negative pressure applied to a surgically closed area of skin trauma. Preferably, the pressure under the sealant layer is reduced by expanding the volume of the enclosure space and thereby decreasing the density of air molecules under the sealant layer.Type: GrantFiled: January 11, 2011Date of Patent: October 22, 2013Assignee: Spiracur, Inc.Inventors: Dean Hu, Moshe Pinto, Kenton Fong, Akshay Mavani, Kenneth Wu
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Patent number: 8551060Abstract: A portable system for subatmospheric pressure therapy in connection with healing a surgical wound is provided. The system includes a wound dressing dimensioned for positioning relative to a wound bed of a subject, and a collection canister in fluid communication with the wound dressing. The canister includes a base defining a fluid receiving cavity and having a fluid inlet port and a vacuum port. The fluid inlet port is configured for fluid communication with a wound dressing, The system further includes a cover selectively engageable to the base, e.g., in a snap-fit manner. The cover is configured to receive a control unit and has a vent assembly for exhausting the control unit. A seal member is interposed relative to the base and the cover to establish and maintain a substantial sealed relationship between the two components when assembled.Type: GrantFiled: July 20, 2011Date of Patent: October 8, 2013Assignee: Smith & Nephew, Inc.Inventors: Wayne Schuessler, Ricky A. Sisk
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Patent number: 8551061Abstract: Apparatus (130) for use in wound therapy of mammals is described, the apparatus (130) comprising: a dressing covering the wound, the dressing being substantially sealed to prevent ingress of ambient atmospheric air to the wound; aspiration means (132) operably connected to a space between the dressing and the wound by an aspiration conduit (142) sealed to the point of entry between wound and dressing against ingress of ambient atmosphere, said conduit (142) being for aspiration of said wound and for removal of fluid from said space between said wound and said dressing; a waste container (148) for receiving aspirated fluid to be discarded operably connected to said aspiration conduit; and heating means (144) for heating said fluid in order to increase the vapor pressure thereof and to cause evaporation to reduce the volume of the fluid in the waste container (148). In a preferred embodiment of the present invention the waste fluid is also provided with a sparge gas.Type: GrantFiled: June 27, 2008Date of Patent: October 8, 2013Assignee: Smith & Nephew PLCInventor: Edward Hartwell
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Patent number: 8540688Abstract: A portable device (2) to generate a vacuum for the medical treatment of wounds on the bodies of humans or animals has a vacuum-producing suction pump (90) in a first housing part (4) of the device and a vessel (10) for receiving body liquids. Vacuum is applied for vacuum communication between the suction pump (90), the vessel (10) and a suction tube (82) leading to the body. A pressure sensor (94) measures the pressure in a tube section (88) and a programmable electronic control unit (100) controls the suction pump (90) in dependence on pressure values measured by the pressure sensor (94). The electronic control unit (100) deactivates the suction pump (90) if a rate of change in pressure (?p/?t) detected by the pressure sensor (94) exceeds a defined threshold value toward decreasing vacuum.Type: GrantFiled: May 11, 2012Date of Patent: September 24, 2013Assignee: Paul Hartmann AGInventors: Axel Eckstein, Juergen Hofstetter
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Patent number: 8529526Abstract: Dressings, systems, and methods are disclosed in some embodiments that involve treating a tissue site with reduced pressure wherein the dressing includes a dressing reduced-pressure indicator that allows one to ascertain that the reduced pressure applied at the dressing is greater than a threshold reduced pressure. The dressing reduced-pressure indicator may include a moving member that is adapted to move under reduced pressure and a visual indicator associated with the moving member. Another embodiment uses an electro-mechanical indicator to provide a powered visual alert or audible alert or another output signal. Other dressings, systems, and methods are disclosed.Type: GrantFiled: October 20, 2009Date of Patent: September 10, 2013Assignee: KCI Licensing, Inc.Inventors: Robert Peyton Wilkes, Justin Alexander Long, Richard Marvin Kazala, Jr., Li Yao, Eric Woodson Barta, Christopher Brian Locke
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Patent number: 8529532Abstract: Described generally herein are tissue therapy devices, which may comprise a sealant layer and a suction apparatus. The sealant layer functions so as to create a sealed enclosure between it and the surface of a patient by forming, preferably, an airtight seal around an area of tissue that requires negative pressure therapy. The tissue therapy device may comprise a suction apparatus. The suction apparatus is typically in fluid communication with the sealant layer and functions so as to reduce the amount of pressure present underneath the sealant layer. The reduced pressure is self-created by the suction apparatus. Together the sealant layer and the suction apparatus preferably create a closed reduced pressure therapy system. Preferably, the pressure under the sealant layer is reduced by expanding the volume of the enclosure space and thereby decreasing the density of the air molecules under the sealant layer.Type: GrantFiled: September 26, 2011Date of Patent: September 10, 2013Assignee: The Board of Trustees of the Leland Stanford Junior UniversityInventors: Moshe Pinto, Dean Hu, Kenton Fong
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Patent number: 8512302Abstract: An aspiration flow control device includes a housing having at least one vacuum port, at least one aspiration port, and an ejection port. The at least one vacuum port is adapted to be connected to a vacuum source, and the aspiration port is adapted to be connected to an aspiration line for receiving fluids from a surgical site. The device further includes a rotating structure having at least three vanes, which structure is configured to rotate within the housing. The at least three vanes divide an enclosed volume within the housing into at least three rotating fluid collection chambers. During rotation of the rotating structure, at least one fluid collection chamber is in communication with at least one vacuum port and the aspiration port through which fluid is received, and at least one other fluid collection chamber is simultaneously in communication with the ejection port through which fluid is expelled.Type: GrantFiled: December 11, 2008Date of Patent: August 20, 2013Assignee: Bausch & Lomb IncorporatedInventor: Lutz Andersohn
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Patent number: 8475419Abstract: Described herein is an automated fluid drain control apparatus and method which comprises a first collection chamber which is connected to a drain that has been inserted into the subarachnoid area in lumbar region of the body. The volume of fluid into the first collection chamber is controlled as a function of time by being constantly measured such that too much fluid will not be drained from the body.Type: GrantFiled: August 22, 2008Date of Patent: July 2, 2013Assignee: Beckersmith Medical, Inc.Inventor: Jan Eckermann
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Patent number: 8444612Abstract: The composite wound dressing apparatus promotes healing of a wound via the use of a vacuum pump. The vacuum pump applies a vacuum pressure to the wound to effectively draw wound fluid or exudate away from the wound bed. The vacuum pump is tethered to the wound dressing and is portable, preferably, carried by the patient in a support bag, which permits patient mobility. Moreover, the patient does not need to be constrained for any period of time while exudate is being removed from the wound.Type: GrantFiled: September 10, 2010Date of Patent: May 21, 2013Assignee: Covidien LPInventors: Harish A. Patel, Dianne Acheson
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Patent number: 8444614Abstract: Disclosed herein are devices, systems and methods for using such devices and systems for treating incisions and wounds. In an aspect, disclosed is a device having a generally planar tension relief module and a flexible sealant structure sized to cover the tension relief module, the flexible sealant structure comprising a lower adhesive surface. The tension relief module includes a conduit structure having a plurality of support structures on an upper surface of the conduit structure and at least one opening extending through the conduit structure from a lower surface to the upper surface. At least a portion of the conduit structure is adapted to be aligned with a longitudinal axis of the incision. The tension relief module also includes opposing adhesive structures coupled to the conduit structure. The lower adhesive surface of the flexible sealant structure and the upper surface of the conduit structure form a flow pathway.Type: GrantFiled: September 24, 2010Date of Patent: May 21, 2013Assignee: Spiracur, Inc.Inventors: Kenneth Wu, Dean Hu, Sumona Nag
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Patent number: 8444613Abstract: A therapeutic device includes a fluid mover for one of raising, compressing, or transferring fluid, a therapeutic member operably connected to the fluid mover and actuated thereby, the therapeutic member operably disposably used on a patient in a manner to deliver therapy to the patient as function of actuation of the fluid mover, a controller operably associated with the fluid mover for controlling operation thereof, and a leak, blockage, temperature, voltage or current sensor operably connected to the fluid mover and the controller and to sense a leak, blockage, temperature, voltage or current in the device and send a signal to the controller whereby the controller controls the fluid mover as a function of the sensed signal.Type: GrantFiled: December 2, 2009Date of Patent: May 21, 2013Inventors: Pal Svedman, Tianning Xu
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Patent number: 8435221Abstract: A surgical tissue therapy device includes a sealant layer and a collection chamber. The sealant layer functions so as to create a sealed enclosure or space between it and the surface of a patient by forming, preferably, an airtight seal around a surgical area of skin trauma. The closed incision tissue therapy device also comprises a collection chamber, which may comprise an elongate tubular chamber with a plurality of longitudinally spaced openings. The collection chamber may be configured to be in fluid communication with the sealant layer and the area of skin trauma and functions as to distribute the negative pressure applied to a surgically closed area of skin trauma. Preferably, the pressure under the sealant layer is reduced by expanding the volume of the enclosure space and thereby decreasing the density of air molecules under the sealant layer.Type: GrantFiled: June 18, 2010Date of Patent: May 7, 2013Assignee: Spiracur, Inc.Inventors: Dean Hu, Moshe Pinto, Kenton Fong, Akshay Mavani, Kenneth Wu
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Patent number: 8409159Abstract: A surgical tissue therapy device includes a sealant layer and a collection chamber. The sealant layer functions so as to create a sealed enclosure, or space between it and the surface of a patient, by forming an airtight seal around a surgical area of skin trauma. The closed incision tissue therapy device also comprises a collection chamber, which may comprise an elongate tubular chamber with a plurality of longitudinally spaced openings. The collection chamber may be configured to be in fluid communication with the sealant layer and the area of skin trauma and functions as to distribute the negative pressure applied to a surgically closed area of skin trauma. Preferably, the pressure under the sealant layer is reduced by expanding the volume of the enclosure space and thereby decreasing the density of air molecules under the sealant layer. The collection material may comprise a material and/or a configuration that permits length changes based upon the length of the corresponding surgical wound or incision.Type: GrantFiled: April 9, 2010Date of Patent: April 2, 2013Assignee: Spiracur, Inc.Inventors: Dean Hu, Kenton Fong, Moshe Pinto, Kenneth Wu, Craig McGreevy, Brendan Donohoe
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Patent number: 8398604Abstract: Disclosed are devices, systems and methods for treating an incision. The device includes a generally planar tension relief module, comprising a central structure in fluid communication with the incision, wherein at least a portion of the central structure is adapted to be aligned with a longitudinal axis of the incision; and opposing adhesive structures coupled to the central structure and a flexible sealant structure comprising a lower adhesive surface and sized to seal over the tension relief module forming a sealed flow pathway. The opposing adhesive structures are adapted to be stretched from a relaxed configuration to a first tensile configuration and to return towards the relaxed configuration from the first tensile configuration into a second tensile configuration and impart a contracting force in a direction that is towards the opposing adhesive structure.Type: GrantFiled: September 26, 2011Date of Patent: March 19, 2013Assignee: Spiracur, Inc.Inventors: Kenneth Wu, Dean Hu, Sumona Nag
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Patent number: 8376972Abstract: A wound treatment device comprises a wound surface contacting plug (10) and a cover (24) for covering the wound surface (22) and the plug (10), wherein said plug (10) consists of a flat textile isolating material comprising at least one first surface layer (12), one second surface layer (14) and one intermediate space (18) arranged between said surface layers (12, 14). At least the first surface layer (12) is provided with a biocompatible surface and a structure which enables a liquid to pass and prevents a wound tissue from growing in said structure. The intermediate space (18) is provided with isolating threads (16) elastically holding the first surface layer (12) and the second surface layer at a certain distance from each other.Type: GrantFiled: November 25, 2005Date of Patent: February 19, 2013Inventor: Wilhelm Fleischmann
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Patent number: 8377016Abstract: A tissue treatment apparatus and method are provided for treating tissue by the application of the time-varying sub-atmospheric pressure. The apparatus includes a cover adapted to cover a wound and adapted to maintain sub-atmospheric pressure the site of the wound. The apparatus further includes a source of suction configured to generate a time-varying sub-atmospheric pressure having a periodic waveform comprising a gradual change in pressure. The suction source cooperates with the cover to supply the time-varying sub-atmospheric pressure under the cover to the wound. The time-varying sub-atmospheric pressure may vary between a first pressure value below the inherent tissue tension of the wound tissue and a second pressure value above the inherent tissue tension of the wound tissue.Type: GrantFiled: January 10, 2007Date of Patent: February 19, 2013Assignee: Wake Forest University Health SciencesInventors: Louis O. Argenta, Michael J. Morykwas, Lawrence X. Webb
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Patent number: 8366693Abstract: A surgical tissue therapy device includes a sealant layer and a collection chamber. The sealant layer functions so as to create a sealed enclosure, or space between it and the surface of a patient, by forming an airtight seal around a surgical area of skin trauma. The closed incision tissue therapy device also comprises a collection chamber, which may comprise an elongate tubular chamber with a plurality of longitudinally spaced openings. The collection chamber may be configured to be in fluid communication with the sealant layer and the area of skin trauma and functions as to distribute the negative pressure applied to a surgically closed area of skin trauma. Preferably, the pressure under the sealant layer is reduced by expanding the volume of the enclosure space and thereby decreasing the density of air molecules under the sealant layer. The collection material may comprise a material and/or a configuration that permits length changes based upon the length of the corresponding surgical wound or incision.Type: GrantFiled: June 18, 2010Date of Patent: February 5, 2013Assignee: Spiracur, Inc.Inventors: Dean Hu, Kenton Fong, Moshe Pinto, Kenneth Wu, Craig McGreevy, Brendan Donohoe
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Patent number: 8348910Abstract: An apparatus (1) for cleansing wounds (5) in which irrigant fluid from a reservoir connected to a conformable wound dressing (2) and wound exudate from the dressing are moved by a device (18) (which may be a single pump or two pumps) for moving fluid through a flow path (6, 7, 9, 10) which passes through the dressing with a means for providing simultaneous aspiration and irrigation of the wound, and means for supplying thermal energy to the fluid in the wound. The former provides a desired balance of fluid at a controlled nominal flow rate that removes materials deleterious to wound healing, while distributing materials that are beneficial in promoting wound healing over the wound bed. The latter maintains a temperature at the wound bed under the wound dressing at a level that promotes wound healing.Type: GrantFiled: April 27, 2005Date of Patent: January 8, 2013Assignee: Smith & Nephew PLCInventors: Patrick Lewis Blott, Edward Yerbury Hartwell, Julian Lee-Webb, Derek Nicolini, Clare Green, Robin Paul Martin
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Patent number: 8333744Abstract: Apparatus for the provision of topical negative pressure therapy to a user is described, the apparatus comprising a device and a waste canister connected thereto, the waste 5 canister being operably connected for receiving wound exudate to a wound dressing by an aspiration conduit which is releasably connected to the dressing, wherein the waste canister has a blank connector portion thereon for sealably receiving a disconnected dressing end of the aspiration conduit.Type: GrantFiled: July 18, 2008Date of Patent: December 18, 2012Inventors: Edward Hartwell, Carl Saxby
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Patent number: 8287507Abstract: A reduced pressure apparatus includes a first casing portion and a second casing portion slidably coupled to the first casing portion such that the first casing portion is compressible into a plurality of positions relative to the second casing portion. The plurality of positions includes a fully compressed position and a fully uncompressed position. An indicator is disposed on at least one of the first casing portion and the second casing portion, the indicator being exposed when the first casing portion is in the fully uncompressed position.Type: GrantFiled: May 1, 2009Date of Patent: October 16, 2012Assignee: KCI Licensing, Inc.Inventors: Keith Patrick Heaton, Ian James Hardman, Richard Daniel John Couthard, Timothy Mark Robinson, Christopher Brian Locke, Aidan Marcus Tout, Benjamin Pratt
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Patent number: 8246591Abstract: A wound dressing for use in negative wound pressure therapy includes a cover layer for positioning over a wound to define a reservoir over the wound in which a reduced pressure may be maintained. At least one vacuum port is affixed to the cover layer and includes a conduit receiving portion configured to receive a fluid conduit to provide fluid communication between the fluid conduit and the reservoir. The at least one vacuum port is configured to receive the fluid conduit from a plurality of directions relative to the cover layer.Type: GrantFiled: January 23, 2009Date of Patent: August 21, 2012Assignee: Tyco Healthcare Group LPInventors: Richard M. Braga, Malcolm G. Bock, Kristin L. Watson
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Patent number: 8246590Abstract: A surgical tissue therapy device includes a sealant layer and a collection chamber. The sealant layer functions so as to create a sealed enclosure or space between it and the surface of a patient by forming, preferably, an airtight seal around a surgical area of skin trauma. The closed incision tissue therapy device also comprises a collection chamber, which may comprise an elongate tubular chamber with a plurality of longitudinally spaced openings. The collection chamber may be configured to be in fluid communication with the sealant layer and the area of skin trauma and functions as to distribute the negative pressure applied to a surgically closed area of skin trauma. Preferably, the pressure under the sealant layer is reduced by expanding the volume of the enclosure space and thereby decreasing the density of air molecules under the sealant layer.Type: GrantFiled: October 10, 2008Date of Patent: August 21, 2012Assignee: Spiracur, Inc.Inventors: Dean Hu, Moshe Pinto, Kenton Fong, Akshay Mavani, Kenneth Wu
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Patent number: 8187227Abstract: A barrier of a vacuum pump prevents contamination from entering a vacuum pump air line. The barrier separates parts of the pump and is moveable between an initial state and a distended state. The barrier is assembled within the pump with a pre-load. When the vacuum source is applied to the barrier, the barrier achieves a distended state and when the vacuum source is released, the barrier incrementally self returns to an initial state. The geometry and material construction of the barrier, along with the pre-load, assists in returning the barrier on its own to the initial state from the distended state.Type: GrantFiled: November 1, 2006Date of Patent: May 29, 2012Assignee: Medela Holding AGInventors: Mark A. Luzbetak, Thomas A. Sutrina, Erich Pfenniger, Patrik Bosshard
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Patent number: 8168848Abstract: A wound dressing member is provided for use in a vacuum bandage connected to a vacuum source and for use with a wound having a wound surface. The member may include a top surface and a bottom surface adapted to be in contact with and generally conform to the wound surface. The member may further include a plurality of discrete holes formed in the bottom surface and at least one discrete opening formed in the top surface. A port of the member may be provided to communicate with the vacuum source, each discrete hole, and the at least one discrete opening.Type: GrantFiled: December 20, 2002Date of Patent: May 1, 2012Assignee: KCI Medical Resources, Inc.Inventors: Jeffrey S. Lockwood, Robert Petrosenko
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Patent number: 8062272Abstract: A wound treatment appliance is provided for treating all or a portion of a wound. The appliance generally comprises a flexible overlay that covers all or a portion of the wound for purposes of applying a reduced pressure to the covered portion of the wound. The wound treatment appliance may also include a vacuum (including a suction bulb) system to supply reduced pressure to the wound in the area under the flexible overlay. In yet other embodiments, the wound treatment appliance may also include a suction drain, wound packing material to prevent overgrowth of the wound or to encourage growth of the wound tissue into the wound packing material, a collection chamber to collect and store exudate from the wound, or combinations thereof. Finally, methods are provided for using various embodiments of the wound treatment appliance.Type: GrantFiled: February 24, 2005Date of Patent: November 22, 2011Assignee: BlueSky Medical Group IncorporatedInventor: Richard Scott Weston
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Patent number: 8048046Abstract: A system for subatmospheric pressure therapy in connection with the healing of a surgical wound is disclosed. The system may be portable or semi-portable, thereby providing the subject with the ability to be partially or completely ambulatory through the course of the treatment. The system includes a wound dressing dimensioned for positioning relative to a wound bed of a subject and a portable subatmospheric pressure mechanism dimensioned to be carried or worn by the subject. The subatmospheric pressure mechanism includes a housing, a vacuum source at least partially disposed within the housing and in fluid communication with the fluid conduit, a filter in fluid communication with the vacuum source, and a collection canister for collecting exudates from the wound bed removed under subatmospheric pressure. An elevation member is mounted with respect to the housing.Type: GrantFiled: May 21, 2008Date of Patent: November 1, 2011Assignee: Tyco Healthcare Group LPInventors: Michael D. Hudspeth, Michael C. Dorsey, Kenneth M. Breitweiser, James M. Harr
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Patent number: 8029497Abstract: A mucous suction device, comprising in combination, a longitudinally elongated, generally tubular, one-piece plastic body, the body having an axially elongated tapered, first portion extending toward an inlet proximate one end of the body, the body having an axially elongated second portion extending toward an outlet proximate an opposite end of the body, radially outwardly extending annular retention rings in said body second portion, said rings having sharp annular peripheries and said rings being axially resiliently flexible and axially spaced apart, and there being body side porting between said body first and second portions, said side porting being manually controllable to control suction exertion.Type: GrantFiled: July 8, 2008Date of Patent: October 4, 2011Assignee: Neotech Products, Inc.Inventors: Craig R. McCrary, Thomas R. Thornbury, Arnold M. Heyman
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Patent number: 8007481Abstract: A portable system for subatmospheric pressure therapy in connection with healing a surgical wound is provided. The system includes a wound dressing dimensioned for positioning relative to a wound bed of a subject, and a collection canister in fluid communication with the wound dressing. The canister includes a base defining a fluid receiving cavity and having a fluid inlet port and a vacuum port. The fluid inlet port is configured for fluid communication with a wound dressing. The system further includes a cover selectively engageable to the base, e.g., in a snap-fit manner. The cover is configured to receive a control unit and has a vent assembly for exhausting the control unit. A seal member is interposed relative to the base and the cover to establish and maintain a substantial sealed relationship between the two components when assembled.Type: GrantFiled: July 17, 2008Date of Patent: August 30, 2011Assignee: Tyco Healthcare Group LPInventors: Wayne Schuessler, Ricky A. Sisk
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Patent number: 8007491Abstract: The tissue therapy device includes a sealant layer and a suction apparatus. The sealant layer creates a sealed enclosure between it and the surface of a patient by forming an airtight seal around an area of tissue. The suction apparatus is in fluid communication with the sealant layer and together, create a closed, reduced pressure therapy system. The suction apparatus self-creates reduced pressure by decreasing the density of air molecules underneath the sealant layer by expanding the volume of the air molecules.Type: GrantFiled: September 19, 2008Date of Patent: August 30, 2011Assignee: The Board of Trustees of the Leland Stanford Junior UniversityInventors: Moshe Pinto, Dean Hu, Kenton Fong
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Patent number: 7988680Abstract: A wound dressing member is provided for use in a vacuum bandage connected to a vacuum source. The wound dressing member is also provided for use with a wound having a wound surface. The wound dressing member includes a wound facing surface adapted to be in contact with and generally conform to the wound surface and a plurality of discrete holes formed in the wound facing surface. The member further includes a port configured to communicate with the vacuum source and with each hole formed in the wound facing surface. The wound dressing member further includes a stand-off having interconnected portions coupled to the wound facing surface and configured to provide a space between the wound facing surface and the wound surface.Type: GrantFiled: February 4, 2005Date of Patent: August 2, 2011Assignee: KCI Medical ResourcesInventors: Jeffrey S. Lockwood, Robert Petrosenko, James R. Risk, Jr.
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Patent number: 7959624Abstract: The invention relates to a device (100) for treating wounds of the human or animal body using a vacuum and having a gas-tight wound-covering element (4), which, when placed in contact with the body of the patient, forms a wound space (10) between the respective wound and the wound-covering element, at least one connecting site (5.1; 5.2), which is in contact with the wound space (10), an absorption body (2), which is a layer, enclosed in an envelope, of a textile section, interspersed with super-absorbing particles, the envelope being permeable to liquids and having pores, the size of which does not exceed that of the super-absorbing particles.Type: GrantFiled: November 2, 2005Date of Patent: June 14, 2011Assignee: Birgit RiesingerInventor: Birgit Riesinger
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Patent number: 7883494Abstract: An apparatus for cleansing wounds in which irrigant fluid from a reservoir connected to a conformable wound dressing and wound exudate from the dressing are moved by a device (which may be a single pump or two pumps) for moving fluid through a flow path which passes through the dressing and over a biodegradable scaffold in contact with the wound bed (which encourages healing tissue growth from the wound bed). The apparatus has means (which includes the device(s)) for providing simultaneous aspiration and irrigation of the wound. A dressing assembly including the dressing and the scaffold, and the dressing and a method of treatment using the apparatus.Type: GrantFiled: October 28, 2005Date of Patent: February 8, 2011Assignee: Smith & Nephew PLCInventor: Robin Paul Martin
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Publication number: 20110015590Abstract: A therapeutic device of the type which includes a fluid moving device for one of raising, compressing, or transferring fluid, a therapeutic member operably connected to the fluid moving device and actuated thereby, the therapeutic member operably disposable for use on a patient in a manner to deliver therapy to the patient as function of actuation of the fluid moving device, wherein the improvement includes a rechargeable power source operably connected to the fluid flowing device which includes a portable renewable energy producing device for powering the fluid moving device.Type: ApplicationFiled: July 14, 2009Publication date: January 20, 2011Inventors: Pal Svedman, David M. Tumey, Tianning Xu
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Patent number: 7779625Abstract: A wound therapy device is disclosed. The wound therapy device may include a housing for covering at least a portion of a wound and for sealing to a body surface of a patient. The housing may also include a liquid collector for retaining liquid therein and a vacuum connection for coupling to a vacuum source. The vacuum connection may be in gaseous communication with the liquid collector. The vacuum connection may be separated from the liquid collector by a liquid barrier.Type: GrantFiled: December 13, 2006Date of Patent: August 24, 2010Assignee: Kalypto Medical, Inc.Inventors: Ashok V. Joshi, John Howard Gordon, Sai Bhavaraju, Troy C. Dayton, Jeremy Heiser
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Patent number: 7731702Abstract: A portable closed wound drainage system that uses a pouch shaped dressing which is inserted into a wound. At least a portion of the outer surface of the pouch is porous to allow exudates to enter. Exudates are removed from the pouch by flexible tubing which is secured inside the pouch at one end and secured at the other end to a portable drain/suction unit. The pouch contains porous material. The tubing can have a single or multi-lumen structure. The pouch and the tube are sealed by a flexible sealing material which is applied to the outer surface of the skin. A cosmetic cover sheet is attached to the patient's skin over the closed wound drainage system.Type: GrantFiled: July 21, 2005Date of Patent: June 8, 2010Assignee: NeoGen Technologies, Inc.Inventors: Farhad Bybordi, John J. Biggie, Lydia B. Biggie, John A. Dawson
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Publication number: 20100030166Abstract: A manually-actuated, constant reduced-pressure apparatus for use with a reduced-pressure system for treating tissue at a tissue site includes a flexible, collapsible member that is operable to move between a compressed position and an extended position. The collapsible member may be disposed between a carrier member and a slider member that move between a compressed position and an extended position. The carrier member and slider member are urged away from each other by a constant-force biasing member, e.g., a constant force coil spring. As the apparatus moves from the compressed position to the extended position, a constant reduced-pressure is generated and delivered to a reduced-pressure port. Systems, methods of manufacturing a manually-actuated, constant reduced-pressure apparatus, and methods of treating a tissue site are also provided.Type: ApplicationFiled: July 9, 2009Publication date: February 4, 2010Inventors: Aidan Marcus Tout, Christopher Brian Locke, Timothy Mark Robinson