Patents Examined by Frank Wilkens
  • Patent number: 5603700
    Abstract: This invention introduces a new unit for suctioning, injection and disposing of different fluids into and from the body of a human being by a special syringe which has a system that allows a fewer buttons or three way stop cocks to be used. This unit will be smaller than similar units and easier to be handled, and will allow a better observation of the intra-cardiac pressure of the patient to be done as well. Also this unit allows a push buttons to be used instead of use of three-way stop cock to avoid rotational motion of hands which some people do not like it.
    Type: Grant
    Filed: December 27, 1993
    Date of Patent: February 18, 1997
    Inventor: Yousef Daneshvar
  • Patent number: 5514100
    Abstract: A needle-syringe assembly, operable in a normal mode and convertible to a retraction mode, comprises an elongated, generally cylindrical barrel, a plunger slidably mounted in the barrel, and a needle holder carrying a hollow needle on the distal end thereof. The barrel forms a hollow nozzle located at the distal end of the barrel. The plunger forms a coaxial cavity extending therethrough, and the plunger includes a helical slot exposing a proximal portion of the coaxial cavity. The needle holder is slidably mounted in the coaxial cavity of the plunger. During the normal mode, a distal portion of the needle holder is engaged within the nozzle by a taper lock. To switch from the normal mode to the retraction mode, the taper lock is disengaged by rotary movement of the plunger relative to the barrel.
    Type: Grant
    Filed: April 19, 1994
    Date of Patent: May 7, 1996
    Inventor: Sakharam D. Mahurkar
  • Patent number: 5512045
    Abstract: An apparatus (10) and method for surgical decompression and irrigation/lavage of a patient comprising a tube (12) having a distal end (14) which is inserted into the intestine and a proximal end (16) which is located outside the patient. The tube (12) has a wall which surrounds a plurality of longitudinally extending lumens. A suction lumen (22) is connected to a suction means located exteriorly in relation to the patient. There are one or more pores capable of delivering irrigation fluid and for syphoning the contents of the patient's intestine. An irrigation lumen (24) is connected to irrigation means (32) located exteriorly in relation to the patient. There are one or more openings extending from the suction lumen (22) to the irrigation lumen (24) for ducting irrigation fluid or gastrointestinal content and for avoiding plugging of the pores by particulate matter or by a stomach lining when the stomach is aspirated.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: April 30, 1996
    Inventor: Teimuraz P. Gurchumelidze
  • Patent number: 5507725
    Abstract: The invention relates to a steering system for a catheter tip. The system includes wire members that extend through a catheter wall that are used to pull a distal portion of the catheter tip causing controlled, predetermined bending at the tip. Anchoring members located near the catheter tip connect the distal end of the catheter with wire members. The steering system also contains control members which are located at a proximal portion of the catheter and are used to control the pull on the wire members. Steering enhancement members are also included in the steering system which facilitate the bending of the catheter wall.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: April 16, 1996
    Assignee: Angeion Corporation
    Inventors: Steven D. Savage, Gregory G. Brucker
  • Patent number: 5499969
    Abstract: A cassette for use in combination with a surgical handpiece and a control console for controlling irrigation and/or aspiration fluid flows in the handpiece having a housing with an external surface and an interface adapted to be held in operative association with the control console, an inlet coupling, a pump tube having an inlet and a discharge line in fluid communication with a waste container and a fluid flow passage in fluid communication with the inlet coupling and the pump inlet consisting of an open channel formed in the external surface and a gasket adhered to the external surface to seal the channel fluid-tight.
    Type: Grant
    Filed: July 14, 1994
    Date of Patent: March 19, 1996
    Assignee: Nestle S.A.
    Inventors: Charles E. Beuchat, Roger Etherington, Harold J. Walbrink, John W. Berkman
  • Patent number: 5498240
    Abstract: An intravascular catheter such as a dilatation catheter for angioplasty procedures having a removable distal shaft section. The catheter construction allows the original distal shaft section of the catheter to be removed and a replacement distal shaft section to be secured to the proximal section which is useful with angioplasty catheters when the dimensions of the balloon on the original distal shaft section are inappropriate for dilating a particular stenotic region. Such catheter construction is also useful when there is a need to implant a stent into a dilated stenotic region to maintain its patency.
    Type: Grant
    Filed: May 27, 1994
    Date of Patent: March 12, 1996
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Celso S. J. Bagaoisan, John P. Shanahan, Ketan P. Muni, Elizabeth N. Hammack, Robert M. Abrams, James C. Peacock, III, William S. Tremulis
  • Patent number: 5490836
    Abstract: An endoscopic surgical instrument 20 includes an irrigation port 21 and an evacuation port 22. Each port, 21 and 22, is connected through independent valves 23 and 24, respectively to a single access conduit 25. The connection between the valves 23 and 24 and conduit 25 is along connector tubes 23a and 24a. The access conduit 25 leads from the valves and their respective valve conduits to a probe connector 26. This probe connector 26 is designed to receive one end, the locating end 27, of a surgical probe 28 which would be used during microsurgical procedures. The surgical instrument 20 also includes a port 31 which allows the surgeon to insert microsurgical instrumentation (not shown) along the access conduit 25 and the bore of the hollow probe 28 to exit from the end 32 thereof. The port 31 should provide a fluid-tight seal when no microsurgical instrumentation is being used with the surgical instrument 20.
    Type: Grant
    Filed: October 26, 1994
    Date of Patent: February 13, 1996
    Inventor: Ashvin H. Desai
  • Patent number: 5489274
    Abstract: An easy operating, durable closure device for controlling the closure of a passageway in for example valves and the like used in medical applications. The device includes a cam surface arranged about the circumference of a resilient tubing member. Rotation of the cam controls the radial position of a compression member that compresses the tubing member to effect closure. Such a closure device, or a two-part rotary closure device in general, is constructed to receive an accessory component such as a syringe, the rotary connecting movement of which automatically opens the closure device. The device may be used as a torqugeable handle for a guidewire gripped in the passage. A large scale version of the device is joined to an introducer sheath, sized to pass an introducer catheter for e.g., a Green field filter, or to close upon a guidewire to prevent backflow of blood.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: February 6, 1996
    Assignee: Boston Scientific Corporation
    Inventors: Michael S. H. Chu, Yem Chin, Andrew Cragg, Barry N. Gellman
  • Patent number: 5484421
    Abstract: A blood sampling aspirator used to withdraw blood into vials for subsequent tests presents a hazard to personnel when withdrawing the hypodermic syringe because of the exposed needle. This invention encompasses an integral syringe design that allows for removal of the needle from the syringe even before the needle is withdrawn from the site of the needle puncture. The needle is contained within a ballistic type component which is withdrawn from the puncture site and from the syringe through the action of component elastic deflections and a force toggle mechanism without the use of coil spring devices. The needle is forcibly propelled into a tubular storage container toward the back of the syringe (toward the syringe operator and away from the patient). After the needle is propelled into the container it offers full protection from inadvertent needle punctures or scratches. The syringe, less the needle, can, if desired, be reused and another needle installed inside the syringe.
    Type: Grant
    Filed: July 1, 1994
    Date of Patent: January 16, 1996
    Inventor: Anthony V. Smocer
  • Patent number: 5484423
    Abstract: The invention refers to a needle (10, 30), such as an epidural needle, whose needle body (14, 28) is structured in its outer surface, at least in sections, so that a resistance which inhibits advance is produced when penetrating through a tissue (22).
    Type: Grant
    Filed: April 15, 1994
    Date of Patent: January 16, 1996
    Assignee: te me na Logistics
    Inventors: Wilhelm Waskonig, Jose J. R. Olive
  • Patent number: 5484402
    Abstract: A surgical irrigation system is suitable for endoscopic and other surgical procedures. A hand held handpiece has a forward protruding hollow tip for supplying irrigation liquid to a surgical site, a hand actuable control for controlling irrigation liquid flow to the tip, and an irrigation liquid inlet. A self contained pumping unit is locatable adjacent a source of irrigation liquid and remote from the handpiece. The pumping unit comprises a housing containing an outlet for irrigation liquid, a pumping member for pumping irrigation liquid through the outlet, a motor for driving the pumping member, and an electric battery assembly for energizing the motor. An elongate tube connects the pumping outlet to the handpiece irrigation liquid inlet for supplying pumped irrigation liquid to the handpiece.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: January 16, 1996
    Assignee: Stryker Corporation
    Inventors: Heber Saravia, Christopher S. Jones, Charles L. Nelson
  • Patent number: 5480392
    Abstract: The invention relates to an angiography catheter comprising a hose-like body with at least one lumen debouching at the distal end in an end opening, wherein the distal end has a permanent curvature and a number of openings is arranged in the wall. At least some of the openings are herein arranged in the curvature in a side of the wall remote from the end opening. The angiography catheter can be of the so-called "pigtail" type, with a circular curvature through substantially 360.degree., wherein openings are arranged in the first 180.degree. of the curvature in the outward facing portion of the wall.
    Type: Grant
    Filed: February 3, 1994
    Date of Patent: January 2, 1996
    Assignee: Cordis Corporation
    Inventor: Frans Mous
  • Patent number: 5480381
    Abstract: A needless injector having a liquid metering chamber with an outlet orifice, a piston slidable within the metering chamber, and a rod arranged to strike one end of the piston to force liquid through the outlet orifice. A cam follower is mounted at one end of the rod to ride on a cam that retracts the rod away from the piston. The injector is in two parts which are biassed away from each other. The front part of the injector carries the outlet orifice and the rear part carries the cam. Actuation occurs when the two parts of the injector are sufficiently urged towards each other by the user to actuate the cam to release the rod and thereby strike the piston and force liquid through the outlet orifice.
    Type: Grant
    Filed: August 4, 1994
    Date of Patent: January 2, 1996
    Assignee: Weston Medical Limited
    Inventor: Terence E. Weston
  • Patent number: 5480386
    Abstract: A portable pump assembly for medical uses, and more particularly a portable micropump designed for the parenteral administration of medicamentous solutions includes a first module (2) provided with a container (8) designed for cooperating with a second motor module (4), the functioning of the pump being ensured by the assembling of the two modules. The first module (2) is provided with a removable filtering and sterilizing device (3), fastened to the filling septum orifice (10) of the container and including a filtering sterile plug (25) and a needle (28) surrounded by a flexible sleeve (29). A support arm (33) includes a guiding part (34) for guiding the device (3) when piercing the septurn and an anchoring casing (40) closing the housing (39) for the second module (4). The first module (2) with the device (3) is provided in a sterile sealed pouch. The assembly is very easy to use, and aseptic conditions are guaranteed during the filling of the container (8).
    Type: Grant
    Filed: July 6, 1994
    Date of Patent: January 2, 1996
    Assignee: Debiotech SA
    Inventors: Michael Brohy, Frederic Neftel
  • Patent number: 5480379
    Abstract: An apparatus for removing atherosclerotic plaque includes a probe attachable to an ultrasound transducer and a catheter surrounding a transmission part of the probe for conveying liquid to the working part of the probe. Preferably, the catheter is made from a material having a negligible coefficient of friction relative to the liquid so that oscillation of the probe is not damped by surrounding tissue or by the catheter. The catheter is arranged so that the liquid wets the entire working part of the probe even when the working part is extended deep inside a vessel.
    Type: Grant
    Filed: October 4, 1993
    Date of Patent: January 2, 1996
    Inventor: Antonio La Rosa
  • Patent number: 5480390
    Abstract: An improved syringe apparatus for use with interchangeable, disposable medicinal ampoules is provided with an advantageous mechanism for facilitated, one-handed operation in the ejection of a spent ampoule. The improved construction also includes a needle ejector projection for one-handed ejection of the used, disposable needle assembly. An improved cap apparatus for covering the needle assembly is also provided.
    Type: Grant
    Filed: March 21, 1994
    Date of Patent: January 2, 1996
    Inventor: Kaveh-Karimi Hajishoreh
  • Patent number: 5478331
    Abstract: A multi-function proximal end adapter (70, 86, 100) for a catheter (22) includes a hollow body (6) defining an axial lumen (8) extending between its proximal and distal ends (12, 10). An annular radially compressible seal (48) is positioned within the body along the axial lumen. A seal driver (58) is threadably mounted to the body and has a hollow extension (60) with a distal end adapted to axially compress the seal causing a radially inward deflection of the seal when the seal driver is threaded onto the body thereby providing a good seal against and securement for an object (such as a catheter or guide wire) passing through the axial lumen of the body. At least a portion of the proximal end of the axial lumen is defined by an internal tapered surface (36) sized to matingly and sealingly engage an external tapered surface (44) of a Luer lock connector (40) after the seal driver has been removed from the proximal end of the body.
    Type: Grant
    Filed: May 11, 1994
    Date of Patent: December 26, 1995
    Assignee: Localmed, Inc.
    Inventors: Ernest W. Heflin, Enrique J. Klein, Aaron V. Kaplan
  • Patent number: 5478330
    Abstract: A steerable catheter comprising a flexible elongate tubular member having proximal and distal extremities. A handle is secured to the proximal extremity. The tubular member has a lumen extending therethrough. A mandrel is slidably mounted in the lumen and extends into the distal extremity. A pull wire extends through the tubular member for causing bending of the distal extremity with respect to the mandrel disposed therein.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: December 26, 1995
    Assignee: Cardiac Pathways Corporation
    Inventors: Mir A. Imran, Mark L. Pomeranz, Brian A. Glynn, Brett A. Follmer, Edward M. Gillis
  • Patent number: 5474546
    Abstract: A dripless cannula system usable with a syringe or other fluid container in a fluid sampling procedure and operable to minimize retention of residual fluids at a sampling site following the sampling procedure. In the preferred embodiment, a vacuum chamber operatively connected to a blunt cannula of the dripless cannula system is operative upon withdrawal of the cannula from the sampling site to draw residual fluids at the site into the vacuum chamber for subsequent disposal. The dripless cannula system of the present invention is a simple, effective apparatus for minimizing the presence of residual fluids at a sampling site following a sampling procedure.
    Type: Grant
    Filed: May 9, 1994
    Date of Patent: December 12, 1995
    Assignee: Abbott Laboratories
    Inventors: William M. Ambrisco, Lauretta A. Iwamasa, Jack E. Ulstad
  • Patent number: 5474540
    Abstract: A fluid delivery device for delivery and mixing of fibrin glue components at a treatment site during surgery includes a slidable sleeve for controlling interaction of fluid dispensed from a pair of adjacent tubes. A pair of syringes are attached to a fluid separation control attachment which allows the fluids from each of the syringes to be forced into the adjacent tubes. When the fluids exit the free ends of the adjacent tubes, they interact and mix when the slidable sleeve thereon is in one position, but are inhibited from interacting and mixing when the slidable sleeve is in another position.
    Type: Grant
    Filed: March 25, 1994
    Date of Patent: December 12, 1995
    Assignee: Micromedics, Inc.
    Inventors: Curtis Miller, Brian McLevish