Tourniquet Patents (Class 606/203)
  • Patent number: 6682547
    Abstract: A low cost tourniquet cuff with identification apparatus comprises: an outer strip; an inner strip positioned against the outer strip; a gas-tight seal joining the inner strip to the outer strip to form a cuff having a physical characteristic wherein the cuff includes an inflatable bladder of a predetermined length greater than the circumference of a limb at a selected location; and a cuff connector carried on the cuff and communicating pneumatically with the bladder for releasably connecting to a tourniquet instrument to establish a gas-tight passageway between the bladder and the instrument, wherein the cuff connector includes identification means indicative of the physical characteristic and detectable by the tourniquet instrument upon establishment of the gas-tight passageway.
    Type: Grant
    Filed: August 14, 2001
    Date of Patent: January 27, 2004
    Inventors: James Allen McEwen, Kevin Bryant Inkpen, Michael Jameson, Kenneth L. Glinz
  • Publication number: 20030236548
    Abstract: The present invention is a surgical tourniquet controller which receives operational parameters from a remote unit, allowing flow components associated with controlling a surgical tourniquet to be collocated with a surgical tourniquet in use, while allowing an operator of the tourniquet to operate the flow components from a remote location, such as at an anesthesiologists position, thus reducing the involvement of the surgical tourniquet operator from the surgical field.
    Type: Application
    Filed: November 7, 2002
    Publication date: December 25, 2003
    Inventors: Michael E. Hovanes, Don S. Schmitt
  • Patent number: 6663653
    Abstract: Following a catheterization of the radial artery in the forearm, the flow of blood through to puncture wound has to be stopped. An adjustable radial artery compressor (1) according to the invention comprises a support arm (2) provided with a support pad (5), a compressor arm (3) provided with a compression pad (6), and a pressure-adjusting means (7, 9, 10) for adjusting the distance between the support pad (5) and the compression pad (6). When the adjustable radial artery compressor (1) is arranged on the forearm of a patient, the support pad (5) bears against a well-defined area at the upside of the radius bone while the compression pad (6) presses against a well-defined area at the underside of the radius bone. With the pressure-adjusting means (7, 9, 10) the compression pressure can be adjusted with high precision, and due to the well-defined contact surfaces, which minimize the risk of vein stasis, the compression pressure is constant irrespective of any movement of the hand or forearm.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: December 16, 2003
    Assignee: Radi Medical Systems AB
    Inventor: Dan Akerfeldt
  • Publication number: 20030167070
    Abstract: An adaptive tourniquet cuff system comprises: a tourniquet cuff having a physical characteristic and including an inflatable bladder of a length greater than the circumference of a limb at a selected location; a cuff connector carried on the cuff and communicating pneumatically with the bladder for releasably connecting to a tourniquet instrument to establish a gas-tight passageway between the bladder and the tourniquet instrument; and an identifying collar including identification means indicative of the physical characteristic and detectable by the tourniquet instrument upon establishment of the gas-tight passageway. The tourniquet instrument may supply gas to the bladder through the gas-tight passageway at a pressure sufficient to stop arterial blood flow into the limb distal to the cuff at the selected location, and may adapt its operation in response to the detected physical characteristic of the cuff.
    Type: Application
    Filed: February 4, 2003
    Publication date: September 4, 2003
    Applicant: Western Clinical Engineering Ltd.
    Inventors: James A. McEwen, Kevin B. Inkpen, Michael Jameson
  • Patent number: 6605103
    Abstract: A system and method of controlling the pressure within a pressure cuff of a surgical tourniquet so as selectively to occlude blood flow within a portion of a limb of a patient, wherein a sensor determines when flow past the tourniquet is occurring so that corrective action may be taken, such as by increasing the pressure in the tourniquet or by notifying an operator of the flow past the tourniquet. The present invention may use an acoustic sensor to detect Korotkoff sounds indicating incipient blood flow past the tourniquet. When such signals are detected, the tourniquet controller may either incrementally increase the pressure in the tourniquet, or if a threshold would be exceeded by such an increase, signal an alarm indicative of the blood flow.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: August 12, 2003
    Assignee: Instrumed, Inc.
    Inventors: Michael E. Hovanes, Don S. Schmitt
  • Publication number: 20030144691
    Abstract: The present invention provides an inflatable tourniquet including an inflatable occluding band, for placement about a limb of a patient, a pump for inflating the occluding band, wherein the pump is capable of producing sufficient pressure within the occluding band in order to block blood flow in a vein of the patient, a fluid conduit, in fluid communication between the occluding band and the pump, and a pressure relief valve, for releasing the fluid from the occluding band.
    Type: Application
    Filed: January 31, 2002
    Publication date: July 31, 2003
    Inventor: Arnon Lambroza
  • Publication number: 20030139766
    Abstract: A pneumatic tourniquet adapted for self application by an injured person in a military or emergency situation to stop arterial blood loss in an injured arm or leg comprises: a bladder having a width dimension and having a length dimension greater than the circumference of an injured limb of a subject at a selected location; and clamp means for securing the bladder around the limb at the selected location and adapted for sealing the bladder across the bladder width to establish an inflatable portion of the bladder to be the portion of the bladder that encircles the injured limb at the selected location.
    Type: Application
    Filed: January 18, 2002
    Publication date: July 24, 2003
    Inventors: James Allen McEwen, Kevin Bryant Inkpen, Kenneth L. Glinz, Michael Jameson
  • Patent number: 6593508
    Abstract: Disclosed is a strip of bandaging material having Velcro® strips at either end on opposite sides of the material. An absorbent pad is fixed near one end and on the side opposite the Velcro® strip. On the side opposite the absorbent pad, an S hook is provided with one end fastened to the material and the other end free. The absorbent pad is located over the wound and the longer end of material is wound around the extremity and fixed in place with the Velcro® stripe at the near end of the material. The remaining material is passed through the hook and pulled back in order to apply pressure to the wound and reduce blood loss. The remainder of the material is wrapped around the extremity and secured in place with the Velcro® strip on the far end.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: July 15, 2003
    Inventor: Robert H. Harder
  • Patent number: 6589268
    Abstract: A hazard monitor for surgical tourniquet systems comprises: pressure transducing means for detecting a pressure in a pneumatic tourniquet cuff; power switch means for enabling an operator in initiate an interruption in the supply of electrical power required by pressure regulator means, wherein the tourniquet instrument is connectable pneumatically to the tourniquet cuff to supply pressurized gas to the cuff, thereby producing a pressure in the cuff; pneumatic connector means for enabling an operator to connect an inflatable cuff to the pressure regulator means, and hazard detection means communicating pneumatically with the pneumatic connector means for detecting pressurized gas having a pressure greater than a predetermined pressure level when an interruption in the supply of electrical power is initiated by the operator.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: July 8, 2003
    Inventor: James A. McEwen
  • Publication number: 20030065357
    Abstract: Tourniquet padding and methods of its use with a tourniquet are provided. The tourniquet padding comprises a cover sheet with at least one surface having anti-slip properties, and can be made with and without a compressible padding material disposed on the cover sheet. The tourniquet padding has a length sufficient to be wrapped around a limb of a person, and a width wider than the tourniquet. The cover sheet can be gathered along the proximal edge to accommodate a range of circumferences of extremities, and include an elastic member for wrapping around the extremity. The surface of the cover sheet to be placed in contact with the skin can include one or more adhesive elements to provide an interrupted adhesive surface. The adhesive elements can comprise an adhesive material that is adherable to skin, or a frictionally adhesive material having anti-slip properties to maintain the padding device in place on the skin during use.
    Type: Application
    Filed: August 23, 2002
    Publication date: April 3, 2003
    Applicant: Richard G. Dedo
    Inventors: Richard G. Dedo, Stephanie Bohrer
  • Patent number: 6537298
    Abstract: Tourniquet padding and methods of its use with a tourniquet are provided. The tourniquet padding comprises a soft, compressible material with an interrupted adhesive areas that are applied against the skin. The tourniquet can be made with and without an internally positioned padding material. The tourniquet padding has a width wider than the tourniquet to provide an extension of material along the distal edge with adhesive that is applied to the skin, and an overlying layer that is turned onto and adhered to the tourniquet to provide a protective surface and keep the tourniquet from slipping distally down the limb during use. The overlying layer can include perforations to divide it into sections. As the tourniquet inflates and deflates, the overlying layer flexes to accommodate the change in thickness. The tourniquet padding can also be crimped or pleated along a proximal edge to accommodate a range of circumferences of extremities.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: March 25, 2003
    Inventor: Richard G. Dedo
  • Publication number: 20030055453
    Abstract: Following a catheterisation of the radial artery in the forearm, the flow of blood through to puncture wound has to be stropped. An adjustable radial artery compressor (1) according to the invention comprises a support arm (2) provided with a support pad (5), a compressor arm (3) provided with a compression pad (6), and a pressure-adjusting means (7, 9, 10) for adjusting the distance between the support pad (5) and the compression pad (6). When the adjustable radial artery compressor (1) is arranged on the forearm of a patient, the support pad (5) bears against a well-defined area at the upside of the radius bone while the compression pad (6) presses against a well-defined area at the underside of the radius bone. With the pressure-adjusting means (7, 9, 10) the compression pressure can be adjusted with high precision, and due to the well-defined contact surfaces, which minimize the risk of vein stasis, the compression pressure is constant irrespective of any movement of the hand or forearm.
    Type: Application
    Filed: September 20, 2001
    Publication date: March 20, 2003
    Inventor: Dan Akerfeldt
  • Patent number: 6525238
    Abstract: A single use disposable skin and cuff protector in the form of a wrap for surrounding at least a portion of a limb of a patient allows a sphygmomanometer cuff to be applied over the wrap. To prevent spreading of pathogens, the wrap includes a sheet having a non-porous barrier layer and optionally, an absorbent layer. The wrap is secured by a non-reusable fastener which cannot be released once fastened or once fastened, cannot be re-fastened. A line of weakening formed in the sheet facilitates removal of the wrap after use. Once secured to a patient for use, the sheet either must be severed to be removed and/or the re-usable fastener cannot be re-fastened thus preventing re-use.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: February 25, 2003
    Inventor: Eva Sanchez Corrales
  • Publication number: 20030028215
    Abstract: A tourniquet system having a strap, a clamp for selectively engaging the strap in which once the clamp engages the strap, the clamp permits the strap to pass substantially freely in a direction away from the clamp and substantially prevents the strap from passing in a direction towards the clamp and securing structure attached to the strap for securing the strap.
    Type: Application
    Filed: January 25, 2002
    Publication date: February 6, 2003
    Inventor: Shan L. Brooks
  • Patent number: 6506206
    Abstract: A tourniquet cuff (10) includes a first layer (20), a second layer (40), and a third layer (60). The first layer (20) has an inner side (22) impermeable to air and the second layer (40) has a first side (44) impermeable to air. The inner side (22) of the first layer (20) and the first side (44) of the second layer (40) cooperate to define a first cavity (96) formed to receive a gel-like material (15) therein. Further, the third layer (60) has an inner side (64) which cooperates with a second side (42) of the second layer (40) to define a second cavity (94) formed to receive pressurized air. The tourniquet cuff (10) adjustably secures about a patient's limb such that the gel-like material (15) is positioned between the patient's limb and the second cavity (94) to uniformly and comfortably distribute pressure around the patient's limb.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: January 14, 2003
    Assignee: DePuy Orthopaedics, Inc.
    Inventors: Jose F. Guzman, Christian H. Clupper, Conrad L. Klotz
  • Publication number: 20020188315
    Abstract: A tourniquet cuff (10) includes a first layer (20), a second layer (40), and a third layer (60). The first layer (20) has an inner side (22) impermeable to air and the second layer (40) has a first side (44) impermeable to air. The inner side (22) of the first layer (20) and the first side (44) of the second layer (40) cooperate to define a first cavity (96) formed to receive a gel-like material (15) therein. Further, the third layer (60) has an inner side (64) which cooperates with a second side (42) of the second layer (40) to define a second cavity (94) formed to receive pressurized air. The tourniquet cuff (10) further includes a means (80 and 90) for adjustably securing the tourniquet cuff (10) about a patient's limb such that the gel-like material (15) is positioned between the patient's limb and the second cavity (94) to uniformly and comfortably distribute pressure around the patient's limb.
    Type: Application
    Filed: August 9, 2002
    Publication date: December 12, 2002
    Inventors: Jose F. Guzman, Christian H. Clupper, Conrad L. Klotz
  • Publication number: 20020120288
    Abstract: Tourniquet padding and methods of its use with a tourniquet are provided. The tourniquet padding comprises a soft, compressible material with an interrupted adhesive areas that are applied against the skin. The tourniquet can be made with and without an internally positioned padding material. The tourniquet padding has a width wider than the tourniquet to provide an extension of material along the distal edge with adhesive that is applied to the skin, and an overlying layer that is turned onto and adhered to the tourniquet to provide a protective surface and keep the tourniquet from slipping distally down the limb during use. The overlying layer can include perforations to divide it into sections. As the tourniquet inflates and deflates, the overlying layer flexes to accommodate the change in thickness. The tourniquet padding can also be crimped or pleated along a proximal edge to accommodate a range of circumferences of extremities.
    Type: Application
    Filed: February 28, 2001
    Publication date: August 29, 2002
    Inventor: Richard G. Dedo
  • Patent number: 6361496
    Abstract: A pressure tourniquet having a window transparent to ultrasound is wrapped around a leg or another anatomical structure containing veins. An ultrasound transducer is placed in contact with the window of the tourniquet. The window is adjacent the anatomical structure and the transducer probes a dilated vein with ultrasound. The transducer can measure the size of the vein and detect reflux. A pneumatic bladder on the tourniquet is inflated to apply pressure to the anatomical structure so that the vein is compressed by the tissue of the surrounding anatomical structure. As pressure from the tourniquet reduces the diameter of the vein, competency of the vein valve can be temporarily restored to indicate the proper reduced diameter required to restore venous function. An electrode catheter is introduced into the vein to apply energy for durably molding the vein to the reduced diameter.
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: March 26, 2002
    Assignee: VNUS Medical Technologies, Inc.
    Inventors: Arthur W. Zikorus, John D'Angelo, Brian E. Farley
  • Publication number: 20020035375
    Abstract: A method and apparatus are disclosed for treating bone fractures by the application of intermittent pneumatic compression. The period of compression is sufficient to induce venous stasis at the fracture site. The period of recovery can be about half the period of compression. The applied pressure can be 50% or less of the baseline pressure.
    Type: Application
    Filed: June 7, 2001
    Publication date: March 21, 2002
    Inventors: Daniel A. Berish, Henry J. McVicker, Glenn W. Johnson, Anthony Victor Seaber, Christian Fink
  • Publication number: 20020016610
    Abstract: A system and method of controlling the pressure within a pressure cuff of a surgical tourniquet so as selectively to occlude blood flow within a portion of a limb of a patient, wherein a sensor determines when flow past the tourniquet is occurring so that corrective action may be taken, such as by increasing the pressure in the tourniquet or by notifying an operator of the flow past the tourniquet. The present invention may use an acoustic sensor to detect Korotkoff sounds indicating incipient blood flow past the tourniquet. When such signals are detected, the tourniquet controller may either incrementally increase the pressure in the tourniquet, or if a threshold would be exceeded by such an increase, signal an alarm indicative of the blood flow.
    Type: Application
    Filed: September 19, 2001
    Publication date: February 7, 2002
    Inventors: Michael E. Hovanes, Don S. Schmitt
  • Publication number: 20010029389
    Abstract: The invention provides a variety of bone marrow-shielding tourniquets and methods for using them to perform bone marrow-shielded chemotherapy with or without general and without the need to remove a patient's bone marrow for protection during the procedure. In the invention method, pressure is applied to at least one body part of the patient that contains myelopoietic bone marrow to temporarily occlude arterial flow to the bone marrow while blood circulation through the remainder of the body is maintained. Then an effective amount of at least one myelosuppresive chemotherapeutic agent is administered to the blood circulation in the remainder of the patient while the arterial flow through the at least one body part is occluded and so that the myelosuppresive effect of the agent is substantially dissipated within the maximum safe period for the occlusion of the arterial flow, or about three hours.
    Type: Application
    Filed: March 28, 2001
    Publication date: October 11, 2001
    Inventor: Sinil Kim
  • Patent number: 6270513
    Abstract: The invention provides a nested tubing cannula which comprises outer and inner elongate tubular members, both having a proximal end, a distal end, and a lumen therebetween. The inner tubular member is sealed at its distal end and is nested substantially coaxially within the lumen of the outer tubular member, so that the gap between the inner and the outer tubular member defines a second lumen whereas the first lumen is the lumen of the inner tubular member. A tubular sleeve is disposed coaxially between the inner and outer tubular members. A balloon is mounted on a distal region of the outer tubular member and is in communication with the first lumen. The cannula further comprises a port proximal or distal the balloon occluder and is in communication with the second lumen. Methods for making the devices herein are disclosed.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: August 7, 2001
    Assignee: Embol-X, Inc.
    Inventors: Ross S. Tsugita, Tracy D. Maahs, Yue-Teh Jang
  • Patent number: 6234980
    Abstract: A method and apparatus for treatment of inadvertent sharps/needlestick injuries to healthcare workers and the like. The method and apparatus provide a tourniquet for restricting blood flow to the site of the sharps injury, an apparatus for mechanically applying a negative pressure directly to the site of the sharps injury and removing bodily fluids and blood therefrom, a mechanism for delivering an antimicrobial/antiviral agent(s) to the site, and bandage for covering the site of the sharps injury following treatment. The first aid components are preferable all contained within a convenient time saving kit to facilitate ease of use by an injured individual.
    Type: Grant
    Filed: August 27, 1999
    Date of Patent: May 22, 2001
    Assignee: MedCare Medical Group, Inc.
    Inventor: Craig J. Bell
  • Patent number: 6217601
    Abstract: An adjustable hemostatic strap which includes a flat elastic band for fastening to the hand to compress the vessel when making a hypodermic injection, and a buckle for fastening the flat elastic band to the hand, the buckle including a plug member fixedly fastened to one end of the flat elastic band, and a socket member slidably mounted on the elastic band and secured to the flat elastic band at the desired location for receiving the plug member for enabling the elastic band to be firmly secured to the hand to compress the vessel.
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: April 17, 2001
    Inventor: Richard C. C. Chao
  • Patent number: 6210423
    Abstract: The invention provides a variety of bone marrow-shielding tourniquets and methods for using them to perform bone marrow-shielded chemotherapy with or without general and without the need to remove a patient's bone marrow for protection during the procedure. In the invention method, pressure is applied to at least one body part of the patient that contains myelopoietic bone marrow to temporarily occlude arterial flow to the bone marrow while blood circulation through the remainder of the body is maintained. Then an effective amount of at least one myelosuppresive chemotherapeutic agent is administered to the blood circulation in the remainder of the patient while the arterial flow through the at least one body part is occluded and so that the myelosuppresive effect of the agent is substantially dissipated within the maximum safe period for the occlusion of the arterial flow, or about three hours.
    Type: Grant
    Filed: January 28, 1999
    Date of Patent: April 3, 2001
    Inventor: Sinil Kim
  • Patent number: 6189538
    Abstract: A non-pneumatic tourniquet for use in treating deep vein thrombosis including: a band, the band having a first end and a second end, wherein said first end and said second end have structure for adjustably connecting to one another; and an adjustable disc, the disc made of substantially hard, non-compressable material and wherein said disc is adjustably connected to said band. A method of treating deep vein thrombosis is also disclosed in which the thrombus can not be easily treated using a catheter, i.e., actively lysed by flow-directed therapy.
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: February 20, 2001
    Inventor: Patricia E. Thorpe
  • Patent number: 6149618
    Abstract: A tightening tool 1 including an elastic body 2 in the form of a belt, rope, tube, etc. for forming a tightening loop L adapted to surround a desired part of muscles and tighten it, and locking means 3 for holding the tightening loop L at a desired size. A muscle training method for accelerating enlargement and strengthening of the muscles can be practiced by the tightening tool to temporarily block the flow of blood to the desired part of the muscles.
    Type: Grant
    Filed: June 9, 1994
    Date of Patent: November 21, 2000
    Assignee: Best Life Co., Ltd.
    Inventor: Yoshiaki Sato
  • Patent number: 6149666
    Abstract: A tourniquet providing for generation of an alarm signal upon passage of a predetermined time after the tourniquet is placed on the patient's limb. The tourniquet includes an elongate flexible body having a pair of spaced-apart connection locations for attachment to secure the body in circumscribing relationship about the limb. A signal alarm is placed in transmission continuity with the connection locations for establishing a complete transmission circuit upon attachment of the connection locations. The signal alarm is placed in a signal generating condition upon completion of the transmission circuit.
    Type: Grant
    Filed: July 27, 1999
    Date of Patent: November 21, 2000
    Assignee: Becton Dickinson and Company
    Inventor: Stewart E. Marsden
  • Patent number: 6068646
    Abstract: An artery clamp includes an inelastic girth band having an interior face and an exterior face. The band is secured about a limb. A plunger extends through the band. The plunger has a first end extending past the interior face and a second end extending past the exterior face. A pressure member mounted on the first end of the plunger. Pressure is exerted with the plunger and then the plunger is locked in a selected position in relation to the band.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: May 30, 2000
    Inventor: Anthony Lam
  • Patent number: 6051016
    Abstract: A system and method of controlling the pressure within a surgical tourniquet so as selectively to occlude blood flow within a portion of a limb of a patient, wherein the pressure within an inflatable cuff surrounding a portion of a limb of a patient is changed by automatically opening a first valve connected to a controller and located within a first conduit between an inflatable bladder and the inflatable cuff, when the pressure in the inflatable cuff is different from that in the inflatable bladder. In another aspect, a system and method of controlling the pressure within a surgical tourniquet so as selectively to occlude blood flow within a portion of a limb of a patient within five seconds. In another aspect, a system and method of detecting a leak in a surgical tourniquet. In another aspect, a surgical tourniquet that, from an inflated state, may enter a deflated state, a set state, a default display state, or an off state.
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: April 18, 2000
    Assignee: Instrumed, Inc.
    Inventors: Robert Mesaros, Michael E. Hovanes, William Clem, Cory Williamson, Martin Albini, Darius Eghbal, Erik Green, Jason Stewart
  • Patent number: 6030394
    Abstract: A vessel loop adapted to frictionally engage a vessel of a patient includes an elongate elastomeric member having an outer surface which is adapted to be brought into contact with the vessel. A friction-enhancing structure is disposed relative to this outer surface to increase the frictional relationship between the elongate member and the vessel. The friction-enhancing structure may take the form of a woven or non-woven mesh, various projections, bristles, or granules, for example. A woven mesh sleeve is disposed over the elongate member and bonded to the member in a preferred embodiment.
    Type: Grant
    Filed: February 26, 1998
    Date of Patent: February 29, 2000
    Assignee: Applied Medical Resources Corporation
    Inventor: Charles C. Hart
  • Patent number: 5997564
    Abstract: A femoral arterial or venous compression device for post-catheterization hemostasis includes a supporting frame (base (1), shaft (2) and arm (4)), and an inflatable unit (carriage (6), bellows (7), disk (8), and pad (9)). The supporting frame is fixed on the human body in line with the incision site in order to bring the pad (9) exactly over and in touch with the latter. The bellows (7) are inflated thus compressing the incision site with the pad (9) for all the time needed to reach complete hemostasis. The pressure on the incision remains constant during the compression period and can be regulated and monitored using a medical sphygmomanometer.
    Type: Grant
    Filed: November 20, 1997
    Date of Patent: December 7, 1999
    Assignee: I.B.S. International Biomedical Systems, S.r.l.
    Inventors: Nader Shehata, Emiliano Cafueri, Silvio Klugmann
  • Patent number: 5968073
    Abstract: Apparatus for applying pressure to a portion of a body, including a pressure cuff surroundingly engageable with the portion of the body, the cuff including a plurality of individually inflatable cells, including a most distal cell and a most proximal cell, and a pressure controller that inflates at least one of the cells to a non-constant pressure during a given time period. Preferably the pressure fluctuates between predetermined maximum and minimum levels during each time interval of cell inflation. The easing of pressure allows the engorged tissue to which the cell applies pressure to immediately refill between pressure rises to the maximum pressure. The cell thus dynamically decongests the engorged tissue to which the cell applies pressure.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: October 19, 1999
    Inventor: Laura F. Jacobs
  • Patent number: 5943705
    Abstract: An athletic equipment attachment strap for holding athletic equipment in place against a user's body includes elastic and non-elastic portions for providing a comfortable and flexible fit. The preferred embodiment provides a loop attached to an elastic portion and hook and loop fasteners for fastening the non-elastic portions to each other around the loop. In an alternate embodiment, two non-elastic portions are positioned at either end of an elastic portion. The two non-elastic portions include hook and loop fasteners for fastening the two non-elastic portions to each other to form a band for holding a piece of athletic equipment.
    Type: Grant
    Filed: March 5, 1998
    Date of Patent: August 31, 1999
    Inventor: Michael D. Sink
  • Patent number: 5935146
    Abstract: A method of monitoring the patency of an inflated tube in a pneumatic medical device. The method includes inflating the tubing of the device, generating a pneumatic pulse at one part of the tubing by varying pressure in the tubing, sensing at another part of the tubing the variation of the pressure, determining the time between the generated and sensed pressure, and producing a human-perceptible signal when the time between the generated and sensed pressure exceeds a reference level.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: August 10, 1999
    Inventors: James A. McEwen, Michael Jameson
  • Patent number: 5931853
    Abstract: A configuration register is incorporated into an electrically powered tourniquet apparatus for enabling an operator to change the values of parameters initially employed at the time of the next use of the apparatus, such as the initial pressure settings and elapsed time limits. These changed initial values of parameters are stored in memory and remain there despite inadvertent or intentional interruption of electrical power to the apparatus. An event register provides capability for recording the occurrence of events (cuff inflation, cuff deflation, etc.) and for relating the occurrence of the events to hazards and undesirable outcomes such as nerve damage associated with tourniquet usage. A safety circuit is included to detect and respond safely to certain failures which are possible within the tourniquet apparatus.
    Type: Grant
    Filed: December 4, 1997
    Date of Patent: August 3, 1999
    Inventors: James A. McEwen, Michael Jameson
  • Patent number: 5885230
    Abstract: A device and method relate to closing a user's gastroesophageal valve to prevent acid reflux from the user's stomach. The device includes a belt having an inner surface and at least one fastener, the belt being sized to fit around an upper abdominal area of the user. A pliable triangular insert contains a gel material, the insert being attachable to the inner surface of the belt and sized to fit over the triangular area between the ribs and directly below the breast bone of the user. The insert conforms to the shape of the user's body and imparts pressure to the upper abdominal area of the user over the user's lower esophagus and gastroesophageal valve when the belt is tightly fastened around the user.
    Type: Grant
    Filed: May 21, 1997
    Date of Patent: March 23, 1999
    Inventor: Veronica Cherry
  • Patent number: 5733304
    Abstract: A disposable inflatable tourniquet cuff which may include an inflatable bladder having inner and outer walls which, in order to reduce cost and complexity, may be of the same size and made from the same material. A stiffener may be located within the bladder's inflatable fluid space, to eliminate the need for any separate parts to properly locate or hold the stiffener. The walls may have exterior, velcro-type soft, fuzzy loops or filaments; and be secured together with welds having a width selected to prevent the longitudinal sides of the cuff from spontaneously rolling up. The soft, fuzzy inner wall may serve as the patient contacting part of the cuff, thereby eliminating the need for a separate soft, fuzzy inner cover to protect the patient; and may serve to engage the hook-type velcro surface on other parts of the cuff, to hold them in the desired position.
    Type: Grant
    Filed: August 21, 1996
    Date of Patent: March 31, 1998
    Assignee: InstruMed, Inc.
    Inventor: Jerry L. Spence
  • Patent number: 5690672
    Abstract: A tourniquet apparatus (10) has an elongated, distensible tourniquet member (12), and a disposable tourniquet cover (40) comprised of an outer liquid-permeable layer (60), an inner absorbent padded layer (70), and a liquid-impermeable layer (80). Adhesive strips (51) and (53) on the tourniquet cover back side (42) peripheral side edges (46) and (48) allow the cover to be easily positioned and removed from the tourniquet (12). Blood or other bodily fluids are trapped in the padded layer without soiling the tourniquet (12). Cover (40) can also be used to protect reusable blood pressure cuffs from soiling.
    Type: Grant
    Filed: June 12, 1996
    Date of Patent: November 25, 1997
    Assignee: Dignity Wear, Ltd.
    Inventor: Robert A. Cohen
  • Patent number: 5681329
    Abstract: A method and apparatus (10) for applying a preformed endless band (18) of elastomeric ligature material to an animal body part is provided, such method employing a motor to facilitate the winding of ligature material. The apparatus (10) includes a winding assembly (14) for winding the band (18), wherein a loop (20) of the band (18) is tightened by winding the band (18). A crimping assembly (16) for crimping a grommet (32) to secure the loop (20) is also disclosed. The invention allows the loop (20) to be quickly and tightly secured using pneumatic/electric tools or motors.
    Type: Grant
    Filed: April 3, 1995
    Date of Patent: October 28, 1997
    Inventor: Michael P. Callicrate
  • Patent number: 5653728
    Abstract: A disposable non-latex tourniquet formed from a thermoplastic elastomer and an additive comprising slip and anti-block components. More particularly, the disposable non-latex tourniquet is formed from a metallocene octene based polymer and an additive comprising slip and anti-block components. The disposable non-latex of the present invention substantially minimizes discomfort to the patient and facilitates ease of use in knotting and releasing the tourniquet from the patient.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: August 5, 1997
    Assignee: Becton, Dickinson and Company
    Inventors: Brian F. Ahern, Hugh T. Conway, Kenneth R. Powell
  • Patent number: 5628723
    Abstract: For use in a bandage comprising a sterile dressing and a web portion attached to and extending from the sterile dressing, a pressure enhancement member comprising a base, and at least one wrapping element generally perpendicular to the base, the at least one wrapping element having a gap, wherein the pressure enhancement member is attached to a non-wound-side surface of the sterile dressing, and the at least one wrapping element is arranged for wrapping therearound by the web portion, wherein when the web portion is wrapped in a first direction around a limb having thereon a wound, and forced through the gap, and the web portion is then wrapped around the at least one wrapping element in a second direction, the pressure enhancement member applies a pressure on the dressing, thereby causing the dressing to apply a local pressure to the wound, and subsequent wrappings of the web portion on the pressure enhancement member, on previous wrappings of the web portion and on the limb, increase the local pressure on t
    Type: Grant
    Filed: February 14, 1996
    Date of Patent: May 13, 1997
    Inventor: Bernard Grau
  • Patent number: 5607448
    Abstract: A rolling tourniquet is provided including releasably connected ends. The tourniquet is longitudinally elastic, flexible and circular in cross section. Further, the tourniquet is highly resistant to radial deformation and the releasably connected ends include releasably joined end connecting members which may be quickly releasably jointed together against separation and quickly disconnected, when desired.
    Type: Grant
    Filed: May 10, 1995
    Date of Patent: March 4, 1997
    Assignee: Daniel A. Stahl
    Inventors: Daniel A. Stahl, Walter W. Johnson, Oscar Galvis
  • Patent number: 5601597
    Abstract: A combination radial artery occluder and wrist splint used to simultaneously immobilize the wrist joint and prevent blood flow through a puncture wound or incision in the radial artery following an invasive medical procedure such as catheterization. The invention generally includes three components: a wrist splint that extends along the distal end of the patient's forearm and the back of the wrist and hand; an adjustable pressure strap attached to the splint that extends around the distal end of the forearm; and an adjustable securing strap attached to the splint that extends around the palm of the patient's hand. The pressure strap includes a pressure pad that is selectively positioned to occlude blood flow through only the radial artery while allowing blood flow through the ulnar artery. During use of the invention, the securing strap is tightened around the palm of the hand to help immobilize the wrist joint.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: February 11, 1997
    Assignee: TAT Inc.
    Inventors: Michael E. Arrowood, Mark Thorne, Curtis W. Thornton
  • Patent number: 5584854
    Abstract: Acupressure clamps include a U-shape band having opposite end portions respectively provided with a pressure applying screw and a spherical counterabutment. The end portions can be parallel with a line of action of the screw extending through the protuberance for application of pressure to precisely opposite portions of a foot or, the end portions can diverge for simultaneous application of pressures along non aligned axes at two locations on a back of a hand. Another device for the leg below the knee or the sole of the foot has a body engaging, arcuate plate carrying a pressure screw and mounted on a fastening strap. A device for the big toe is a socket with a pressure screw and a device for smaller toes is a clip.
    Type: Grant
    Filed: August 8, 1995
    Date of Patent: December 17, 1996
    Inventor: Richard Minarik
  • Patent number: 5540714
    Abstract: A single-use disposable phlebotomy venous tourniquet formed from a strip of elastic fabric material. Such fabric may be initially selected or treated with a polymeric or elastomeric material to provide surfaces having predetermined frictional characteristics to minimize slippage and discomfort to the patient and to facilitate ease of use in knotting and releasing the tourniquet.
    Type: Grant
    Filed: December 7, 1992
    Date of Patent: July 30, 1996
    Assignee: Ingress Technologies, Inc.
    Inventors: C. Lee Payne, Jr., John L. Lundberg, J. Thomas Atkins, Ray L. Hauser
  • Patent number: 5535485
    Abstract: A constriction device for limiting circulation of blood, fluids and other materials to limbs and other appendages. Compressive force can be applied to the limb or other appendage through the device's band which is held in place by the action of a clamping member. Compressive force may be variably or immediately released. The device is convenient to use and may be controlled with one hand leaving the other hand free to perform other tasks.
    Type: Grant
    Filed: September 28, 1994
    Date of Patent: July 16, 1996
    Assignee: Kimetec GmbH
    Inventor: Claudia Kirchner
  • Patent number: 5512056
    Abstract: The discovery that by use of a spreader beam and pressure pad which has an adjustable strap secured to its ends, and then positioning the spreader beam with the pressure pad over the wound or puncture, will inhibit the bleeding and enhance coagulation is disclosed. As a result of the method, substantially less than 180.degree. radially of a limb or a body portion is subject to the pressure of the strap. Only a small portion of the radius of the skin is engaged by the pressure pad itself. The method of the invention derives from utilizing a spreader beam and pressure point with a strap at each end of the spreader beam in surrounding engagement with a limb or other body portion which has been punctured, and then positioning the pressure pad to apply pressure to the puncture point, and keeping the compress in place until the wound has ceased bleeding.
    Type: Grant
    Filed: September 13, 1994
    Date of Patent: April 30, 1996
    Inventors: Robert R. Stevens, Rene Guerra
  • Patent number: 5499996
    Abstract: Apparatus in the form of a trocar adapted for penetration of the wall of a blood vessel, such as the ascending aorta, contains an inflatable diaphragm carried in a collapsed condition within the interior of the trocar and an appropriate fluid connection of the diaphragm to a source of inflating fluid effects the expansion of the diaphragm and release from the trocar into occluding relation with the blood vessel wall to obstruct the flow of blood through the occluded passage.
    Type: Grant
    Filed: March 14, 1994
    Date of Patent: March 19, 1996
    Inventor: John D. Hill
  • Patent number: 5486194
    Abstract: This invention relates to a compressive hemostatic belt wherein a cup-shaped rigid case is attached by an attaching device to a predetermined position on a band made of non-stretchable or low-stretchable fiber, nonwoven fabric or film, and a balloon adapted to be inflated by being filled with fluid is received in the rigid case. Preferably, at least the portion of the band which corresponds to the leg when the band is wrapped around the body is shaped in curve form. Buckles may be attached to the opposite ends of the band and a buckle attaching plate may be attached to the rigid case. One end of the band may be provided with projections so that when the band is wrapped around the body, the other end of the band is thrusted on the projections to fix the band in position. If the band is made of adhesive material, more reliable fixing can be achieved. A check valve adapted to prevent fluid from flowing back from the balloon may be removably connected to the balloon to provide for reuse of the check valve.
    Type: Grant
    Filed: December 2, 1993
    Date of Patent: January 23, 1996
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Atsuko Kawasaki, Takefumi Nakashita, Yoshiharu Inui, Toshimichi Shirouzu