Having Vacuum Shutoff Means (e.g., Float Valve, Etc.) Patents (Class 604/320)
  • Patent number: 7935094
    Abstract: The invention provides a surgical vacuum device including a vacuum cup sized for attachment to and manipulation of a target tissue. The device further includes a vacuum hose for applying a vacuum to the interior of the cup, and structure for applying a tensioning force to the cup once it has been placed and a vacuum applied. The vacuum device may be utilized with minimal or no trauma to the target tissue or surrounding tissues.
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: May 3, 2011
    Assignee: Meditech Development Incorporated
    Inventor: Neal M. Lonky
  • Patent number: 7927318
    Abstract: A system for treating a patient with a wound comprises a bandage, a receptacle, and a vacuum source. The bandage comprises a cover to seal about the wound and to define a space above the wound in which a vacuum is to be formed. The bandage further comprises a port providing communication with the space. The receptacle is connected to the port to receive exudate from the wound and is provided to be placed below the wound. The vacuum source is spaced apart from the receptacle, is connected to the receptacle, and is effective to provide a vacuum in the receptacle and in the space.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: April 19, 2011
    Inventors: James Robert Risk, Jr., Robert Petrosenko, Alexander B. Bitel, Jeffrey S. Lockwood
  • Publication number: 20110046585
    Abstract: A wound treatment apparatus is provided for treating tissue damage, which comprises a fluid impermeable wound cover sealed over a site for purposes of applying a reduced pressure to the site. The apparatus also includes a cover with protrusions on its surface for purposes of monitoring pressure at the site. An absorbable matrix may be placed in the site of a wound to encourage tissue growth into the matrix. Temperature of the site may be monitored using a layer of temperature sensitive material and temperature sensors connected to an alarm and recording device. A vacuum pump supplies suction within the wound cover over the treatment site. A portable version of the wound treatment apparatus is also provided. Finally, a method for treating wounds using reduced pressure is provided.
    Type: Application
    Filed: November 2, 2010
    Publication date: February 24, 2011
    Applicant: BlueSky Medical Group, Inc.
    Inventor: Richard Scott Weston
  • Publication number: 20110028921
    Abstract: Methods and apparatuses are disclosed for providing topical negative pressure to a wound. One such apparatus comprises a waste canister for collecting and holding wound exudate and at least one pump arranged to urge wound exudate along a flow path from the wound to the waste canister. The pump can be further configured to deliver a single factory set pressure. Accordingly, the pressure delivered to the wound would be determined by the pressure set for the pump along with the parameters associated with the flow path, such as whether a leak or a blockage occurs.
    Type: Application
    Filed: December 11, 2008
    Publication date: February 3, 2011
    Applicant: SMITH & NEPHEW PLC
    Inventors: Edward Yerbury Hartwell, Jonathan Chappel
  • Patent number: 7854729
    Abstract: This application teaches a disposal chain and a supply chain system for sealing and unsealing a vacuum draw path embodying a thrust handle capable of imparting assembly and disassembly thrust forces said system conferring the potential of reducing the amount solid waste mass contributed to the waste stream.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: December 21, 2010
    Assignee: Medindica-Pak, Inc.
    Inventors: Jack W. Romano, Adam L. Smith
  • Publication number: 20100268180
    Abstract: A method and apparatus and an adapter device for testing the integrity of a dressing applied to a wound for the purpose of applying topical negative pressure therapy to that wound are described, the method comprising the steps of: applying a dressing to the wound so as to create a sealed cavity over the wound, the cavity having an aspiration conduit operably connected thereto for the purpose of creating a vacuum in the cavity; providing adapter device means to a liquid scalpel so as to create a substantially closed volume around a region in which a water jet exists in operation of the water scalpel; connecting a free end of the aspiration conduit to the closed volume formed by the adapter device means on the scalpel; and, using a vacuum created by a venturi effect of the liquid jet in the closed volume to create a vacuum in the dressing cavity.
    Type: Application
    Filed: December 3, 2008
    Publication date: October 21, 2010
    Applicant: Smith & Neohew PLC
    Inventor: Edward Hartwell
  • Patent number: 7814926
    Abstract: A liquid aspirator, in particular for liquids containing solids such as sludge, has a receptacle into which liquid can be sucked in by an aspirator motor through a vacuum connector and from which the liquid can drain through a drainage. The receptacle has at least two separate receiving chambers and a control that controls that the receiving chambers are filled alternatingly with liquid while the receiving chambers that are not being filled are drained. The receiving chambers are sealable relative to the vacuum side of the aspirator motor by main valves that are preferably mechanically connected.
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: October 19, 2010
    Assignee: OASE GmbH
    Inventors: Dieter Hoffmeier, Reinhard Wesselmeier, Utz Wagner
  • Patent number: 7806879
    Abstract: A disposable liner/lid system useable with a rigid canister and having an adhesive seal to provide improved sealing characteristics and effectively reduce the likelihood of spillage and leakage. The liner includes a flange and the lid includes adhesive that is secured to the interior of the lid and the flange of the liner when installed to provide a seal.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: October 5, 2010
    Assignee: DeRoyal Industries, Inc.
    Inventors: Christine N. Brooks, Walter C. Cowart, Terry B. Kehne, Timothy R. Rowen, Eric A. Ward, E. Steven Ward
  • Patent number: 7794450
    Abstract: An apparatus for cleansing and promoting tissue growth in wounds, in which irrigant fluid optionally containing cell nutrients and/or other physiologically active material from a reservoir connected to a conformable wound dressing and wound exudate from the dressing are recirculated by a device for moving fluid through a flow path which passes through the dressing, a biodegradable scaffold in contact with the wound bed and a means for fluid cleansing and back to the dressing. The apparatus has means for supplying thermal energy to the fluid in the wound. The cleansing means (which may be a single-phase, e.g. micro-filtration, system or a two-phase, e.g. dialytic system) removes materials deleterious to wound healing, and the cleansed fluid, still containing materials that are beneficial in promoting wound healing, is returned to the wound bed. The dressing and a method of treatment using the apparatus.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: September 14, 2010
    Assignee: Smith & Nephew PLC
    Inventors: Patrick Lewis Blott, Bryan Greener, Edward Yerbury Hartwell, Julian Lee-Webb, Derek Nicolini, Clare Green, Robin Paul Martin
  • Publication number: 20100198175
    Abstract: A drainage system comprising a portable ergonomic carrier, the carrier further comprising at least one electric motor which moves a moving member that is powered by at least one battery and that is commanded by at least one electronic driver. The drainage system also includes a disposable collector that comprises at least one suction mechanism or pump that is adapted to receive said moving member and this collector also includes a least one valve mechanism and at least one filter mechanism. The collector forms at least one collecting chamber and is engagingly mated and coupled demountably into the portable ergonomic carrier.
    Type: Application
    Filed: February 5, 2009
    Publication date: August 5, 2010
    Inventor: German Rosero
  • Patent number: 7763000
    Abstract: A wound treatment apparatus is disclosed to provide vacuum therapy to a wound associated with a patient. The wound treatment apparatus comprises a control unit comprising an alarm and a display displaying an alarm log providing information associated with each activation of the alarm. The display also displays information to instruct a user how to operate the wound treatment apparatus. A method of calibrating the control unit is disclosed.
    Type: Grant
    Filed: July 6, 2004
    Date of Patent: July 27, 2010
    Inventors: James R. Risk, Jr., Robert Petrosenko
  • Patent number: 7753894
    Abstract: An apparatus for cleansing wounds with means for stressing the wound bed and optionally tissue surrounding the wound, in which irrigant fluid from a reservoir connected to a conformable wound dressing and wound exudate from the dressing are recirculated by a device for moving fluid through a flow path which passes through the dressing and a means for fluid cleansing and back to the dressing. The cleansing means (which may be a single-phase, e.g. micro-filtration, system or a two-phase, e.g. dialytic system) removes materials deleterious to wound healing, and the cleansed fluid, still containing materials that are beneficial in promoting wound healing, is returned to the wound bed. The means for stressing the wound bed and optionally tissue surrounding the wound promotes wound healing. The dressing and a method of treatment using the apparatus.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: July 13, 2010
    Assignee: Smith & Nephew PLC
    Inventors: Patrick Lewis Blott, Edward Yerbury Hartwell, Derek Nicolini, Clare Green, Robin Martin, Bryan Greener, Julian Lee-Webb
  • Publication number: 20100174251
    Abstract: A reduced pressure treatment appliance is provided for treating a wound on the body of a patient. In some embodiments, the appliance comprises a cover, which can have a top cup member and an interface member. The interface member can have flow control means, configured to permit exudate from the wound to flow through the flow control means into the volume under the cover, but not in the opposite direction. Also, in some embodiments, the top cup member can have a lid member, a cup body member, and lid attachment means to removably attach the lid member to the cup body member. In some embodiments, the cover can be configured to facilitate access to the wound for monitoring, treatment and other purposes without removing the cover from the body. The wound treatment appliance can have a vacuum system to supply reduced pressure to the site of the wound in the volume under the cover. A suction bulb can he used lo provide a source of reduced pressure to the cover.
    Type: Application
    Filed: March 17, 2010
    Publication date: July 8, 2010
    Inventor: Richard Scott Weston
  • Patent number: 7749205
    Abstract: A wearer wears a urine receptacle in which a urine absorbent material 3 is housed in a substantially rectangular, non-breathable, liquid-impermeable outer sheet having a U-shaped cross-section, and the surface of the urine absorbent material is covered with a hard-breathable, liquid permeable top sheet. Urine is discharged from a urine drainage port formed on the bottom surface of the outer sheet to a sealed urine tank by a vacuum pump through urine drainage tubes.
    Type: Grant
    Filed: March 10, 2004
    Date of Patent: July 6, 2010
    Assignees: Hitachi, Ltd., Uni-Charm Corporation
    Inventors: Wataru Tazoe, Junichi Kobayashi, Ryousuke Miyagawa, Kenji Yoshida, Shigeru Machida, Ichiro Wada, Miou Suzuki, Kenichi Okabe
  • Patent number: 7722584
    Abstract: An automatic urine collection apparatus includes a collection container for accumulating urine transferred from a urine receiver through a tube and a main body for supporting the collection container, wherein the main body includes a suction pump for sucking the urine received by the urine receiver and carrying the urine to the collection container, a mass sensor for measuring the urine accumulated in the collection container, a control board for calculating a volume of the urine based on the measured mass of the urine, and an indicator for indicating the calculated volume of the urine.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: May 25, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Tetsuya Tanaka, Ryosuke Miyagawa, Yoshikazu Ishitsuka, Hiroshi Koizumi, Shigeharu Sayama
  • Patent number: 7670323
    Abstract: A reduced pressure treatment apparatus includes a drape for positioning over the wound site to create and maintain a substantially air-tight cavity between the wound site and the drape. A multi-lumen suction tube is provided to be attached to a reduced pressure source. The multi-lumen suction tube includes a center lumen and at least one outer lumen and is configured to deliver reduced pressure beneath the drape to the substantially air-tight cavity. The multi-lumen suction tube is adapted to allow fluid to be drawn from the wound site through the center lumen and pressure to be monitored at the wound site through the at least one outer lumen.
    Type: Grant
    Filed: March 2, 2007
    Date of Patent: March 2, 2010
    Assignee: KCI Licensing, Inc.
    Inventors: Kenneth William Hunt, Keith Patrick Heaton
  • Patent number: 7635359
    Abstract: Disclosed is a receptacle for use with a medical suction device which is equipped with a cover body and an external case for detachably holding and air-tightly surrounding the receptacle and a patient-side tube for introducing waste liquid into the receptacle, and designed to create a negative pressure in both an interior space of the cover body and the external case and an interior space of the receptacle so as to allow waste liquid to be sucked into the receptacle through the patient-side tube. The receptacle has an air-pervious/liquid-impervious element having air perviousness and liquid imperviousness. The air-pervious/liquid-impervious element at least partly constitutes a portion of the receptacle to be surrounded by the cover body and the external case.
    Type: Grant
    Filed: June 8, 2004
    Date of Patent: December 22, 2009
    Assignee: Daiken Iki Kabushiki Kaisha
    Inventors: Hajime Nakazawa, Hiroaki Takimoto
  • Publication number: 20090275905
    Abstract: A canister for use with a medical suction or aspiration device has a first fluid chamber and a second fluid chamber. The first fluid chamber has an inlet. The second fluid chamber has an outlet port. A splash baffle is disposed between the first fluid chamber and the second fluid chamber. The splash baffle has an aperture formed therethrough to allow for fluid flow from the first fluid chamber to the second fluid chamber. An absorbent valve having voids is disposed within the second fluid chamber and engages a portion of the outlet port. The absorbent valve restricting fluid permeability upon contact with fluid from the first fluid chamber to restrict fluid flow through the outlet port.
    Type: Application
    Filed: May 1, 2008
    Publication date: November 5, 2009
    Inventors: Francis J. Clementi, Joel David Neatrour
  • Patent number: 7588723
    Abstract: An input blood supply within a blood perfusion system is pumped through a chamber. A centrifugal flow of the input blood supply is formed in a bottom region of the chamber to cause air to migrate toward an axial center of the chamber. A float is buoyantly suspended on the centrifugal flow wherein the float is disposed for vertical movement in the chamber, and wherein the float has an effective density less than the density of the blood. When a volume of air present within the chamber is less than a predetermined volume, then the float closes a valve at an air outlet from the chamber. When a volume of air present within the chamber is greater than the predetermined volume, then the float opens the valve to remove air from the chamber.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: September 15, 2009
    Assignee: Terumo Cardiovascular Systems Corporation
    Inventor: Arthur D. Gershowitz
  • Patent number: 7524311
    Abstract: Featured is an automatic high-negative pressure relief valve and its use in combination with an apparatus for draining fluid from a body. In broad terms the negative pressure relief valve includes a biasing mechanism, a moveable member acted upon by the biasing mechanism and a seating surface. When the pressure within a chamber, in which a portion of the relief valve is in fluid communication with, is less than a predetermined negative pressure, the moveable member is moved by the biasing mechanism to sealing engage the seating surface and when the pressure is at or above the predetermined value, the restoring force of the biasing mechanism is overcome and the moveable member moves away from the seating surface. In an exemplary embodiment, the biasing mechanism is a spring, diaphragm or wave washer.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: April 28, 2009
    Inventors: Trinh D. Phung, Daniel A. Boardman
  • Publication number: 20090105674
    Abstract: A snivel aspirator includes a bottle and a snivel aspirator main body. The bottle has a bottle lid having an air-aspirating tube communicating with the bottle and having a non-return valve. The bottle lid further has an air-sucking tube communicating with the bottle and disposed with an air-valve switch. The snivel aspirator main body connected with the air-sucking tube of the bottle has a filth-collecting box and an air-outgoing passageway communicating with the air-sucking tube of the bottle by a connecting tube, disposed with an air-valve press button fixed with an insert rod having a spring fitted thereon and having its lower end secured with a clogging block facing the air-outgoing passageway. The snivel aspirator main body has another side provided with a snivel-aspirating tube communicating with the filth-collecting box.
    Type: Application
    Filed: October 19, 2007
    Publication date: April 23, 2009
    Inventor: I-Jung Cheng
  • Publication number: 20090082741
    Abstract: A combo suction regulator for medical use which comprises a cover (casing), a vacuum gauge, a regulating module, a integrated flow channel module, an intermittent timer regulating means, a mode select switch, a vacuum relief and air buffer, wherein a flow channel board and a bottom board coupled with each other to form the integrated flow channel module; the air buffer are disposed inside the casing on the board surface of the flow channel board which forms part of the integrated flow channel module, and tow holes disposed at a bottom part thereof for communicating corresponding flow channels of the integrated flow channel module; a sleeve seat is disposed at the center for installing vacuum gauge.
    Type: Application
    Filed: June 3, 2008
    Publication date: March 26, 2009
    Applicant: GENTEC (SHANGHAI) CORPORATION
    Inventor: Yuegang HU
  • Patent number: 7500968
    Abstract: A urine collection apparatus includes an adaptable reservoir that is sized and shaped for conveniently and effectively being transported by a user. The reservoir includes a top portion including an intake valve in fluid communication with the reservoir. The intake valve is provided with an opening such that the male catheter can be selectively biased in fluid communication with an interior of the reservoir. Such an intake valve further has a threaded screw cap directly and adjustably coupled thereto for effectively allowing a selected quantity of air to continuously flow into and out of the reservoir wherein the quantity of air is commensurate with a quantity of fluid discharging and entering the reservoir respectively. The intake valve preferably has a monolithically formed conical tip that terminates proximal to the top portion such that the male catheter can effectively be supported at a fixed relationship with the reservoir during operating conditions.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: March 10, 2009
    Inventors: Thomas P. Nappa, Michael J. Nappa
  • Patent number: 7485260
    Abstract: Venous reservoirs are interposed between the patient and the arterial pump and serve to remove air bubbles and provide compliance that accommodates variations in the volume of blood circulating in the extracorporeal circuit during cardiopulmonary bypass (CPB). The invention is a reservoir that incorporates automated means to remove air bubbles from the venous line prior to the blood entering the arterial blood pump. In another form, the reservoir includes means that handles foam prior to the blood entering the blood pump. In yet another form, the invention is means that improve air removal in a soft shell venous reservoir. These features are applicable to CPB circuits using gravity drainage or vacuum assisted venous drainage.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: February 3, 2009
    Inventor: Yehuda Tamari
  • Publication number: 20090030385
    Abstract: A disposable shutoff valve apparatus used in conjunction with a surgical suction device having a suction nozzle for stopping the suction action and muffling the noise from the suction device during surgery. The apparatus includes an upper portion, a base portion and a flexible member. The base portion can be securely attached to a surgical drape around a patient during surgery or other stationary object. The suction nozzle of the suction device can be inserted into and through the open end of the suction chamber and passes through the upper retaining member such that the suction nozzle pulls the flexible member toward itself, and thereby the flexible member stops the suction action of the suction nozzle and muffles the noise from the suction nozzle of the suction device and further simultaneously grips the suction device within the suction chamber.
    Type: Application
    Filed: September 19, 2008
    Publication date: January 29, 2009
    Inventor: Herbert D. Huddleston
  • Publication number: 20090012485
    Abstract: Various implementations of a fluid collection system having a flexible liner are disclosed. In one exemplary variation, the fluid collection system may include a container having a top opening, a lid configured to close the top opening, and a flexible liner attached to the lid. The liner may be interposed between the lid and the container when the lid closes the top opening. The liner and the lid may define a substantially sealed interior space therebetween. The lid may include an access port through which the interior space receives fluid. The flexible liner may also be configured to controllably collapse as the fluid is removed from the interior space.
    Type: Application
    Filed: March 24, 2008
    Publication date: January 8, 2009
    Inventors: Thomas L. Michaels, Russ A. Johnson, Adam S. Fedenia, Wen Tang, Frank Garrett, Otakar Kudrna
  • Patent number: 7468058
    Abstract: A suction fluid collector includes a transparent reservoir made of a resilient material with an upper opening positioned on one side of a flexible suction bag with at least one transparent side. A plate part made of a resilient material is positioned on another side of the suction bag opposite said reservoir. An urging means arranged between the reservoir and the plate part provides a force tending to expand a gap between the reservoir and the plate part. A suction tube is positioned partially inside the reservoir and extends through the suction bag.
    Type: Grant
    Filed: March 7, 2007
    Date of Patent: December 23, 2008
    Assignee: Tyco Healthcare Group LP
    Inventors: Nobuatsu Kanie, Akira Itoh, Dai Sutoh
  • Publication number: 20080281283
    Abstract: A system for disposing of body fluids collected during surgery comprises a canister and an apparatus for emptying and cleaning the canister. The canister has a lid having an inlet port to receive body fluids during surgery and for insertion of a cleaning fluid sprayer during servicing, an outlet port with a suction tube extending into the canister for removal of fluids therefrom, and a vacuum port for the application of vacuum to the canister. The servicing unit is an appliance having a receiving compartment in which the canister is placed. A connector head in the servicing unit connects the canister to a source of cleaning fluid and to a conduit for evacuating the fluids in the canister through the suction tube and to a decontamination chamber, where they are brought into contact with a disinfecting fluid, and subsequently to a drain.
    Type: Application
    Filed: October 30, 2007
    Publication date: November 13, 2008
    Inventor: Kenneth Gordon Walker
  • Patent number: 7390320
    Abstract: An automatic urine disposal device has a urine collecting pad, vacuum pump, and urine tank. In the urine collecting pad, the top sheet comes in contact with the wearer's skin, the hydrophilic sheet is disposed on the bottom of the top sheet, and the urine absorbent sheet is disposed at the bottom. When discharged urine flows in the top sheet, the hydrophilic sheet widely diffuses urine to saturate its entire surface and then becomes non-breathable. As the vacuum pump vacuums the air from the urine tank, urine is directed from a urine drainage port of the urine collecting pad via a urine drainage tube to the urine tank which is a sealed container.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: June 24, 2008
    Assignees: Hitachi, Ltd., Uni-Charm Corporation
    Inventors: Shigeru Machida, Junichi Kobayashi, Yuji Yoshitomi, Akiomi Kouno, Ryousuke Miyagawa, Ichiro Wada, Miou Suzuki
  • Publication number: 20080108960
    Abstract: A catheter for collecting fluid such as blood from a vessel such as a coronary sinus of a patient has an elongated, flexible tubular portion and an annular sealing member spaced from a distal end of the tubular member. A proximal end of the tubular member is adapted to be connected to a source of suction for applying suction to a collection lumen of the tubular member. The distal end is placed in a blood vessel with the sealing member spaced from opposing surface of the vessel in an absence of a suction applied to the collection lumen. Suction is applied to the collection lumen in an amount sufficient to draw blood from the vessel through the fluid inlet and into the collection lumen and further sufficient to urge the opposing surface of the vessel to migrate into sealing engagement with the sealing member.
    Type: Application
    Filed: November 7, 2006
    Publication date: May 8, 2008
    Inventors: James Edward Shapland, Tuan Minh Doan, Mark Francis Brown
  • Patent number: 7357142
    Abstract: An apparatus for continuously aspirating a fluid from a fluid source. A vacuum source is operatively connected to a first container forming a first chamber and a second container forming a second chamber. A fluid collection tube provides communication between the fluid source and each of the first chamber and the second chamber. A first level sensor is positioned within the first chamber and a second level sensor is positioned within the second chamber. Upon receiving a signal generated by one of the first level sensor and the second level sensor, a relay responsively exposes a vacuum within one of the first chamber and the second chamber to continuously aspirate at least a portion of the fluid from the fluid source. A shut-off valve is preferably positioned within each of the first chamber and the second chamber to prevent communication between the vacuum source and the corresponding chamber with a fluid level within the chamber at a fluid level setpoint.
    Type: Grant
    Filed: December 31, 2004
    Date of Patent: April 15, 2008
    Assignee: MD Technologies inc.
    Inventor: William L. Merkle
  • Publication number: 20080004576
    Abstract: An automatic urine collection apparatus includes a collection container for accumulating urine transferred from a urine receiver through a tube and a main body for supporting the collection container, wherein the main body includes a suction pump for sucking the urine received by the urine receiver and carrying the urine to the collection container, a mass sensor for measuring the urine accumulated in the collection container, a control board for calculating a volume of the urine based on the measured mass of the urine, and an indicator for indicating the calculated volume of the urine.
    Type: Application
    Filed: June 26, 2007
    Publication date: January 3, 2008
    Inventors: Tetsuya TANAKA, Ryosuke Miyagawa, Yoshikazu Ishitsuka, Hiroshi Koizumi, Shigeharu Sayama
  • Patent number: 7175612
    Abstract: A suction limiting device with variable control for use in a surgical system includes a main vent body having a fluid carrying bore extending therethrough and a variable vent mechanism having a main vent opening in selective fluid communication with the fluid carrying bore so as to permit introduction of atmospheric air into the fluid carrying bore. The vent mechanism being adjustable so that the degree of airflow into the fluid carrying bore is variable between a fully open position to a fully closed position where atmospheric air is prevented from entering the fluid carrying bore. The suction limiting device also includes a valve disposed within the main vent body and positionable between an open position when negative pressure and a closed position when positive pressure exists in the main vent body.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: February 13, 2007
    Assignee: C.R. Bard, Inc.
    Inventors: Augustus Felix, Kevin Ranucci, Karen E. Kullas, Adam P. Angell, Lisa Futato, Dan Hass
  • Patent number: 7066917
    Abstract: A kit includes all the materials necessary for oral gastric lavage in a single pouch. The components, many of which are common hospital supplies, may thus be pre-selected to work together in critical applications and to resist clogging.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: June 27, 2006
    Inventor: Anthony R. Talamonti
  • Patent number: 7022113
    Abstract: A wound treatment apparatus has a vacuum bandage covering a wound of a patient, a vacuum source coupled to the vacuum bandage, and a controller that operates the vacuum source to apply negative pressure to the wound through the bandage in a controlled manner. The controller is programmed to limit the rate of change of the negative pressure applied to the wound. A caregiver has the ability to change one or more negative pressure setpoint values and the controller of the wound treatment apparatus controls the rate of change of the negative pressure to reduce patient discomfort.
    Type: Grant
    Filed: July 11, 2002
    Date of Patent: April 4, 2006
    Assignee: Hill-Rom Services, Inc.
    Inventors: Jeffrey S. Lockwood, Robert Petrosenko, James Robert Risk, Jr.
  • Patent number: 6976977
    Abstract: A drainage device comprising an improved vacuum regulator assembly is disclosed which includes an adjustable knob for indicating the degree of vacuum being applied to the device from a number of incident viewing angles. Similarly, a vacuum indicator assembly is provided for indicating the presence or absence of vacuum being applied to drainage device. The indicator assembly provides an indication of vacuum inside drainage device from many viewing angles and includes a base defining a recess having a slanted surface with a vacuum symbol which is selectively masked by a collapsible thimble when vacuum is applied or removed from the drainage device.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: December 20, 2005
    Assignee: Sherwood Services AG
    Inventor: Jacky Yam
  • Patent number: 6808515
    Abstract: The object of this invention is to provide a multiply connected type liquid waste disposal apparatus to unify the kind of canister bottles used for multiple connection, to provide plural patient hoses for separate use, to enable easy visual recognition of a content capacity even if a liquid waste disposing capacity is increased, and to rapidly solidify an absorbed liquid waste.
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: October 26, 2004
    Assignees: Gunma Koike Co., Ltd., Koike Medical Co., Ltd.
    Inventors: Masao Takahashi, Kazuo Koike, Eiichi Takano
  • Patent number: 6773426
    Abstract: Venous reservoirs are interposed between the patient and the arterial pump and serve to remove air bubbles and provide compliance that accommodates variations in the volume of blood circulating in the extracorporeal circuit during cardiopulmonary bypass (CPB). The invention is a reservoir that incorporates automated means to remove air bubbles from the venous line prior to the blood entering the arterial blood pump. In form, the reservoir includes means that handle foam prior to the blood entering the blood pump. In another form, the invention provides means that improve air removal in a soft shell venous reservoir. These features are applicable to CPB circuits using gravity drainage or vacuum assisted venous drainage.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: August 10, 2004
    Inventor: Yehuda Tamari
  • Patent number: 6770062
    Abstract: Featured is an automatic high-negative pressure relief valve and its use in combination with an apparatus for draining fluid from a body. In broad terms the negative pressure relief valve includes a biasing mechanism, a moveable member acted upon by the biasing mechanism and a seating surface. When the pressure within a chamber, in which a portion of the relief valve is in fluid communication with, is less than a predetermined negative pressure, the moveable member is moved by the biasing mechanism to sealing engage the seating surface and when the pressure is at or above the predetermined value, the restoring force of the biasing mechanism is overcome and the moveable member moves away from the seating surface. In an exemplary embodiment, the biasing mechanism is a spring, diaphragm or wave washer.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: August 3, 2004
    Inventors: Trinh D. Phung, Daniel A. Boardman
  • Patent number: 6652495
    Abstract: A system for disposing of body fluids collected during surgery comprises a canister and an apparatus for emptying and cleaning the canister. The canister has a lid having an inlet port to receive body fluids during surgery and for insertion of a cleaning fluid sprayer during servicing, an outlet port with a suction tube extending into the canister for removal of fluids therefrom, and a vacuum port for the application of vacuum to the canister. The servicing unit is an appliance having a receiving compartment in which the canister is placed. A connector head in the servicing unit connects the canister to a source of cleaning fluid and to a conduit for evacuating the fluids in the canister through the suction tube and to a decontamination chamber, where they are brought into contact with a disinfecting fluid, and subsequently to a drain.
    Type: Grant
    Filed: July 3, 2000
    Date of Patent: November 25, 2003
    Inventor: Kenneth Gordon Walker
  • Patent number: 6632203
    Abstract: A sampling port having a mechanical valve for a drainage apparatus is disclosed which permits a practitioner to directly access a collection chamber of the drainage apparatus using a needle-less syringe for withdrawing a sample of fluid therefrom. The sampling port comprises a port in direct communication with the collection chamber and a mechanical valve partially disposed inside the port. The mechanical valve comprises a generally tubular body containing a spring loaded valve that is normally closed to fluid flow communication and operable using a needle-less tip syringe to actuate the valve. In operation, a practitioner engages the needle-less tip syringe to the valve which places the valve in an open position and permits fluid flow into the syringe as the practitioner draws back on the plunger of the syringe.
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: October 14, 2003
    Assignee: Sherwood Services AG
    Inventors: David Rork Swisher, Jacky Yam
  • Patent number: 6615862
    Abstract: The object of this invention is to provide a float for a liquid waste disposal apparatus having a simple structure for enabling the content inside a container to be easily visually recognizable and allowing a faster and steadier solidification of an absorbed liquid waste. A water-absorptive material 6 is retained inside a spherical float 5 in a manner where a water-absorptive material 6 is wrapped by a water permeable sheet 22 inside a hemispherical primary structural portion 5a and a secondary structural portion 5b capable of being separated into two portions, and thus structured, a circle shaped hole 5c or a square shaped hole 5d of the float 5 serving as a flow path for flowing downward a liquid waste 21 absorbed from an upper portion into a lying member L is formed at the surface of the float 5. The float 5 is contained inside the lying member L in a floatable manner permitted to revolve in a vertical direction.
    Type: Grant
    Filed: June 27, 2001
    Date of Patent: September 9, 2003
    Assignees: Gunma Koike Co., Ltd., Koike Medical Co., Ltd., Koshin Chemical Co., Ltd., Showa Jushi Kogyo, Inc.
    Inventors: Masao Takahashi, Nobuo Murata, Masashi Suzuki
  • Patent number: 6599271
    Abstract: A device for preventing post occlusion flow surges during eye surgery includes an enclosure defining an inlet and an outlet. The enclosure further defines a flow passage between the inlet and the outlet. A restriction is positioned in the flow passage. Structure preferring a filtering function is placed upstream of the restriction for permitting fluid passage through the device. The enclosure further defines a storage area for collecting material restrained by the filter structure. In the preferred embodiment, the device is constructing from a suitable plastic or other molded material, and is intended for disposable use.
    Type: Grant
    Filed: April 13, 2000
    Date of Patent: July 29, 2003
    Assignee: Syntec, Inc.
    Inventor: James C. Easley
  • Publication number: 20030097100
    Abstract: The vacuum desiccator low pressure vacuum pump and trap and is transportable upon a user's person. The device is especially useful to remove excess fluids from wounds and incisions as they heal. The device includes a desiccator cartridge containing a fluid trapping agent. The desiccator cartridge is connected to a vacuum pump member providing a low vacuum pressure to the interior chamber of the desiccator cartridge. A small battery powered, electric motor drives the pump member. An electrical control circuit, including the battery power source, controls the operation of the electric motor. A single passage, one-way, gas/liquid flow pathway connects the inlet port of the desiccator cartridge to an occlusive dressing covering the wound to be drained. The control circuit includes one or more ancillary circuits for controlling operation of the device, such as: a power circuit, a moisture sensor, a timer circuit, a vacuum pressure sensor, and a pressure differential sensor.
    Type: Application
    Filed: November 20, 2001
    Publication date: May 22, 2003
    Inventor: Richard Watson
  • Publication number: 20030018309
    Abstract: The present invention describes a device for placement in the thoracic cavity of a patient. The device is a cannula, tube or catheter for chest drainage. The device serves as a conduit for drainage of excessive fluid or air buildup in the chest to a receptacle outside the body. The device also serves to prevent influx of fluid or air into the chest cavity, thus preventing pneumothorax or infection. The device incorporates systems for anchoring the chest drainage cannula to the chest.
    Type: Application
    Filed: July 17, 2001
    Publication date: January 23, 2003
    Inventor: Eugene Michael Breznock
  • Publication number: 20020198504
    Abstract: A wound treatment apparatus is disclosed to provide vacuum therapy to a wound associated with a patient. The wound treatment apparatus comprises a control unit comprising an alarm and a display displaying an alarm log providing information associated with each activation of the alarm. The display also displays information to instruct a user how to operate the wound treatment apparatus. A method of calibrating the control unit is disclosed.
    Type: Application
    Filed: May 31, 2002
    Publication date: December 26, 2002
    Inventors: James R. Risk, Robert Petrosenko
  • Publication number: 20020183702
    Abstract: A control system (2) for use with a vacuum bandage (14) over a wound (300) includes a vacuum pump (110), a waste canister (26) operably coupled to the pump (110), and a fluid source (24). The canister (26) is coupled to the bandage (14) such that, when a vacuum is applied to the canister (26), the vacuum is applied to the bandage (14). The fluid source (22) is coupled to the bandage (14) to selectively introduce fluid into the wound (300).
    Type: Application
    Filed: May 6, 2002
    Publication date: December 5, 2002
    Inventors: Alan Wayne Henley, Robert Petrosenko, James Robert Risk, Ronald Leslie Sanderson
  • Publication number: 20020111592
    Abstract: A medical suction system comprising a medical suction canister used in draining bodily fluid from a patient, and a cleaning station for automatically draining and cleaning the suction canister and for automatically providing a visible indication that the canister has been cleaned.
    Type: Application
    Filed: April 4, 2002
    Publication date: August 15, 2002
    Applicant: Bemis Manufacturing Company
    Inventors: Peter F. Bemis, Amelia H. Newar, Steven J. Kolste, William J. Genett
  • Patent number: 6391009
    Abstract: An improved drainage apparatus for use in pleural aspiration of patients during thoracic surgery. The Apparatus includes three tubes mounted in parallel and connected to one another. A first tube acts as a vacuum input tube; the second tube is a flow monitor tube, while the third tube is filled with water and keeps the vacuum system isolated from the atmosphere.
    Type: Grant
    Filed: January 3, 2000
    Date of Patent: May 21, 2002
    Inventor: Valentín Lorenzo Crosa Dorado
  • Patent number: 6371947
    Abstract: A disposable thoracic drainage device connectable to an aspiration unit, comprising a container body internally forming at least one chamber for collecting the drainage liquid which is connected to an inlet for connection to a patient and to a water-head suction adjustment valve. The water-head suction adjustment valve has a first water head section and a second water head section which are side by side and mutually series-connected by a connecting duct.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: April 16, 2002
    Inventor: Lucio Gibertoni