摘要:
A dialysis catheter including a first portion having an outer wall having a first diameter, an elongated distal portion having a second diameter smaller than the first diameter, and a transition region between the first portion and distal portion. A first longitudinally extending venous lumen is configured to deliver blood. First and second independent longitudinally extending arterial lumens are configured to withdraw blood from a patient. The venous lumen and arterial lumen have first and second regions each positioned a first distance from the outer wall of the catheter and a third region positioned a second shorter distance from the outer wall of the catheter to form an arch shaped wall portion progressively increasing in thickness from the third region toward the first region and from the third region to the second region.
摘要:
A vessel filter comprising a first region and a second region wherein the filter is movable between a collapsed position for delivery to the vessel and an expanded position for placement within the vessel. A first region has a filter portion having a converging region to direct particles toward the center of the filter and the second region is flared in the expanded position to have a transverse dimension increasing toward a second end portion opposite the first end portion. The second region includes a vessel engaging portion at the second end portion. The first region includes a plurality of spaced apart elongated struts with adjacent struts being joined.
摘要:
An apparatus is disclosed for endoscopic application of surgical staples adapted to attach surgical mesh to body tissue in laparoscopic hernia surgery. The apparatus includes a frame, and a generally elongated endoscopic section connected to the frame and extending distally therefrom. A staple storage cartridge is removably supported on a pivotal support system at the distal end portion of the endoscopic section with each staple being configured and adapted to attach the mesh to the body tissue. An elongated pusher system formed of several assembled components and extending from the frame to the endoscopic section is provided for individually advancing at least one staple at a time distally for positioning adjacent the surgical mesh and the body tissue. The pusher system also includes a trigger system to actuate the pusher. The trigger system is provided with perceptible tactile sensing means to indicate when the legs of the staple being advanced are exposed so as to be visible to the user for positioning and orientation purposes. Anvil means provides for individually closing each staple to encompass at least a portion of the surgical mesh and to penetrate the body tissue in a manner to attach the portion of the mesh to the body tissue. Projecting distally of the cartridge support system is a pair of legs which are dimensioned and configured to engage the staple during closure to prevent unwanted roll or deformation outside of the plane of the staple.
摘要:
An apparatus is disclosed for endoscopic application of surgical staples adapted to attach surgical mesh to body tissue in laparoscopic hernia surgery. The apparatus includes a frame, and a generally elongated endoscopic section connected to the frame and extending distally therefrom. A staple storage cartridge is removably supported on a pivotal support system at the distal end portion of the endoscopic section with each staple being configured and adapted to attach the mesh to the body tissue. An elongated pusher system formed of several assembled components and extending from the frame to the endoscopic section is provided for individually advancing at least one staple at a time distally for positioning adjacent the surgical mesh and the body tissue. The pusher system also includes a trigger system to actuate the pusher. The trigger system is provided with perceptible tactile sensing means to indicate when the legs of the staple being advanced are exposed so as to be visible to the user for positioning and orientation purposes. Anvil means provides for individually closing each staple to encompass at least a portion of the surgical mesh and to penetrate the body tissue in a manner to attach the portion of the mesh to the body tissue. Projecting distally of the cartridge support system is a pair of legs which are dimensioned and configured to engage the staple during closure to prevent unwanted roll or deformation outside of the plane of the staple.
摘要:
A device for closing an aperture in a vessel wall comprising a covering member having a longitudinal axis and positionable inside the vessel against the internal opening of the aperture and having a dimension to prevent egress of fluid through the aperture and having a first opening. A first retainer is positionable external of the vessel. A flexible connecting member operatively connects the covering member and the first retainer, wherein the first opening of the covering member is configured to restrict movement of the connecting member.
摘要:
A medical catheter comprising a first return lumen, a plurality of withdrawal lumens, a first clamping member and a plurality of intake extension tubes. Each intake extension tube communicates with an intake lumen of the catheter to provide fluid communication with the respective intake lumens. The intake extension tubes are positioned in a stacked arrangement, and the clamping member has a plurality of posts to receive the stacked tubes to limit lateral movement thereof.
摘要:
A vessel filter comprising a mounting section having first and second ends and a first and second filtering section. The filter is movable between a collapsed position for delivery to the vessel and an expanded position for placement within the vessel. In the expanded position a first end of the first filtering section converges to form a first converging region and a second end of the second filtering section converges to form a second converging region. The first converging region is positioned radially and axially inwardly of the first end of the mounting section and the second converging region is positioned radially and axially inwardly of the second end of the mounting section.
摘要:
A dialysis catheter including a first portion having an outer wall having a first diameter, an elongated distal portion having a second diameter smaller than the first diameter, and a transition region between the first portion and distal portion. A first longitudinally extending venous lumen is configured to deliver blood. First and second independent longitudinally extending arterial lumens are configured to withdraw blood from a patient. The venous lumen and arterial lumen have first and second regions each positioned a first distance from the outer wall of the catheter and a third region positioned a second shorter distance from the outer wall of the catheter to form an arch shaped wall portion progressively increasing in thickness from the third region toward the first region and from the third region to the second region.
摘要:
A device for closing an aperture in a vessel wall comprising an elongated member having a longitudinal axis and positionable inside the vessel against the internal opening of the aperture. The elongated member has a dimension to prevent egress of fluid through the aperture. A material forms two curved legs having ends positionable external of the vessel. The legs curve in different directions and a retention portion is formed in the material to retain the legs during placement of the elongated member inside the vessel.
摘要:
A surgical apparatus for delivering fluid to treat a lesion comprising an elongated member having a distal tip and a plurality of slots formed in a sidewall proximal of the distal tip, a plurality of fluid delivery members positioned in the elongated member and having a lumen and at least one opening communicating with the lumen for delivering fluid to the lesion, and an actuator actuable to a first position to move the plurality of fluid delivery members from a retracted position within the elongated member to a first deployed position extending radially with respect to the elongated member and actuable to a second position to move the plurality of fluid delivery members from the first position to a second deployed position extending further radially from the elongated member.