摘要:
An improved gastric bypass prosthetic (GBP) device and an improved GBP fixation device, as well as a GBP kit for the surgical treatment of obesity. In one form, a gastric bypass prosthetic (GBP) device of the invention includes a optional flexible tube extending along a central axis from a proximal end to a distal end, and having a tubular tissue fixation portion at or near said proximal end. The tissue fixation portion extends along the central axis between a proximal end and a distal end of the tissue fixation portion, and has an annular outer surface between the proximal end and the distal end of the tissue fixation portion.
摘要:
A fused loop of an elongated material, such as a surgical suture, and apparatus for making the loop. Portions of one or more segments to be joined together are fused in a welding process to form a welded joint. The shear area of the fused portion of the joint determines the strength of the joint and is thus preferably relatively large. Various configurations for the welding apparatus facilitate the creation of relatively large fused portions of the joint by maximizing contact between at least one of the welding members of the apparatus and at least one of the segments to be joined.
摘要:
A suture tensioning and fixation device comprises a suture thread and a suture retaining element. The retaining element has a first suture thread engaging portion on the first end, a second suture thread engaging portion opposite the first suture thread engaging portion, and a third, substantially centrally located suture thread engaging portion. The retaining element is adapted such that segments of the suture thread can be interwoven between the suture thread engaging portions of the retaining element. The suture thread engaging portions of the retaining element are adapted to frictionally hold the interwoven segments of suture thread. Localized melting of the retaining element where it contacts the suture thread segments establishes a weld and bonds the suture thread to the retaining element in a knotless joint.
摘要:
The present invention provides a tubing set in cassette form and an irrigation system employing the cassette and tubing set for use in endoscopic procedures. The tubing set includes a generally arcuate cassette which is inserted into the pump housing to effect a change in tubing sets between procedures. A valve assembly and flattened tubing segment are preferably used to provide pressure control/relief in the tubing set/irrigation system. Also provided in combination with the preferred cassette is a fitting for coupling a pressure monitoring line with pressure monitoring equipment in the irrigation system.
摘要:
An irrigation system for use in endoscopic procedures for maintaining and controlling flow of irrigation fluid to an internal body irrigation site. The system includes a tubing set comprising inflow and outflow lines and a cassette, and an fluid control module comprising a race and a pumping mechanism that squeezes the inflow line of the tubing set against the race to pump fluid to the irrigation site. The cassette includes a through opening exposing a portion of the inflow line to the race and pumping mechanism so that the cassette merely holds the inflow line in alignment with the pumping mechanism but is not required to resist the compressive force of the pumping mechanism. The cassette may include a second through opening exposing a portion of the outflow line to a valve mechanism to regulate pressure independently of the pump mechanism, and rib-or-groove alignment mechanism to align the inflow line with the pumping mechanism and the outflow line with the valve mechanism.
摘要:
An implant and method for the repair of a tendon or a ligament along at least one load direction. The implant includes at least one first anchor portion and at least one tension member oriented along a load direction. The first anchor portion preferably has a larger surface area of engagement with the tendon or ligament to spread loads across more tissue. The tension member is preferably secured to the first anchor portion with an overlapping attachment. Tension on the tension member is preferably adjustable by the surgeon.
摘要:
An expandable soft tissue fixation assembly for use in anchoring soft tissue to bone. The assembly includes a tab connected to an anchor, a sleeve adapted to surround the anchor, and a flange adapted to hold a soft tissue segment next to a bone. The sleeve is inserted into a blind hole in a bone, and a section of soft tissue is placed over the hole next to the bone. Energy is applied to the flange while a predetermined axial tension is applied to the tab to compress a flared portion of the anchor against the sleeve. An upper tube portion of the anchor and the flange are bonded together, and the applied axial force on the tab separates it from the anchor, leaving the assembly anchored in the bone and the soft tissue section anchored in place between the flange and the bone.
摘要:
A device and method of suturing closed an opening and ligating a vessel or duct comprising removable tissue puncturing means (22) or vessel surrounding means establishing a continuous channel (24) through said tissue or around said vessel from each side. A completed channel (24) is formed and suture material (26) is threaded through the channel making a complete loop. The thread is secured at an anvil (30) independent from said puncturing/surrounding means. The puncturing/surrounding means is retracted leaving the thread, which is then tensioned closing the opening or occluding the vessel. The suture thread is secured and cut, forming a closed loop with overlapping ends. An energy transmitting device (38) melts the suture thread ends together forming a weld. The anvil (30) is removed leaving a knot-free completed stitch or ligature.
摘要:
A welding apparatus that includes a first member having a first suture-contacting surface, a second member having a second suture-contacting surface, and a device for moving the first member relative to the second member to define a gap between the respective suture-contacting surfaces. The first member is capable of vibrating and delivering mechanical energy at ultrasonic frequencies. The second member is stationary relative to the first member. A fixture element is adapted to receive and maintain two or more segments of a material to be welded in a predetermined alignment in the gap between the first and second surfaces of the first and second members during a welding operation. According to another aspect of the invention, an ultrasonic welding apparatus includes first and second members with patterned first and second suture-contacting surfaces. The patterned surfaces can be complementary or non-complementary and the surface patterns on each member may vary in either a periodic or a non-periodic manner.
摘要:
A fused loop of an elongated material, such as a surgical suture, and apparatus for making the loop. Portions of one or more segments to be joined together are fused in a welding process to form a welded joint. The shear area of the fused portion of the joint determines the strength of the joint and is thus preferably relatively large. Various configurations for the welding apparatus facilitate the creation of relatively large fused portions of the joint by maximizing contact between at least one of the welding members of the apparatus and at least one of the segments to be joined.