摘要:
A stent delivery system to facilitate introduction and placement of a stent, including a catheter having an expansible distal portion constructed and arranged for expanding the outer diameter of the catheter from a contracted state to an expanded state; a stent positioned around the distal portion of the catheter, having a contracted condition and being expansible to an expanded condition, and being sized in the contracted condition to closely surround the catheter in the contracted state, the stent having an end portion defining a margin lying over the expansible portion of the catheter; a sleeve in the region of the distal portion of the catheter positioned around the catheter having a first end fixed to the catheter and a second end defining a margin lying over the margin of the stent; the sleeve fixing the end of the stent on the catheter when the catheter is in the contracted state, the catheter and stent cooperatively constructed and arranged to cause expansion of the catheter from its contracted state to its expanded state to cause expansion of the stent, including the margin of the stent, from its contracted condition to its expanded condition, and therewith cause the margin of the sleeve to slide axially from over the margin of the stent thereby releasing the end of the stent from the catheter.
摘要:
A rapid exchange catheter extends from a proximal portion which remains outside of a patient's body during use to a distal portion which, during use, is located within a body lumen adjacent to a target area to be treated, wherein the proximal and distal portions are coupled by a medial portion. The catheter comprises a guide wire lumen extending longitudinally through the distal portion and a guide wire receiving channel formed by an outer surface of the medial portion, wherein the guide wire lumen is open to a distal end of the channel.
摘要:
An anchor secures an implantable device within a body by engaging a wall of the body. The anchor includes a shank and an arm extending from the shank. The shank and the arm are integrally formed from a single member. The shank attaches to the device.
摘要:
A rapid exchange catheter comprises a guide wire lumen including a substantially sealed portion in which a lumen wall extends around an entire periphery thereof and a channel portion including a channel opening the lumen to an exterior of the catheter, wherein a width of the channel is less than a maximum width of the channel portion. A guide wire ramp extends into the channel portion, with the ramp extending further into the lumen of the channel portion as a distal end of the ramp is approached.
摘要:
The present invention relates to a multi-size catheter for use in biliary endoscopic procedures. The multi-size catheter comprises an outer diameter defined by a plurality of superimposed peelable layers. The peelable layers allow the multi-size catheter to function as a single operator exchange catheter without the need, and additional expense, of an endoscope sheath. Before positioning the multi-size catheter within the working channel of an endoscope, the peelable layers may be selectively removed in order to obtain an outer diameter for the catheter that is less than, but approximate to, the inner diameter of the working channel of the endoscope. The resulting fit eliminates the potential for a guidewire to slip out of the guidewire channel and become pinched between the catheter and the endoscope working channel. With an incorrect fit, a pinched guidewire would restrict the desired movements of both the guidewire and the catheter.
摘要:
The present invention relates to a multi-size catheter for use in biliary endoscopic procedures. The multi-size catheter comprises an outer diameter defined by a plurality of superimposed peelable layers. The peelable layers allow the multi-size catheter to function as a single operator exchange catheter without the need, and additional expense, of an endoscope sheath. Before positioning the multi-size catheter within the working channel of an endoscope, the peelable layers may be selectively removed in order to obtain an outer diameter for the catheter that is less than, but approximate to, the inner diameter of the working channel of the endoscope. The resulting fit eliminates the potential for a guidewire to slip out of the guidewire channel and become pinched between the catheter and the endoscope working channel. With an incorrect fit, a pinched guidewire would restrict the desired movements of both the guidewire and the catheter.
摘要:
A rapid exchange catheter comprises a guide wire lumen including a substantially sealed portion in which a lumen wall extends around an entire periphery thereof and a channel portion including a channel opening the lumen to an exterior of the catheter, wherein a width of the channel is less than a maximum width of the channel portion. A guide wire ramp extends into the channel portion, with the ramp extending further into the lumen of the channel portion as a distal end of the ramp is approached.
摘要:
A rapid exchange catheter extends from a proximal portion which remains outside of a patient's body during use to a distal portion which, during use, is located within a body lumen adjacent to a target area to be treated, wherein the proximal and distal portions are coupled by a medial portion. The catheter comprises a guide wire lumen extending longitudinally through the distal portion and a guide wire receiving channel formed by an outer surface of the medial portion, wherein the guide wire lumen is open to a distal end of the channel.
摘要:
An insertion tool for use in inserting a guide wire into a guide wire lumen of a catheter for use in a lumen of an endoscope. The insertion tool includes a main body having a main lumen and a funnel-shaped extension connected to and disposed atop the main body. The funnel-shaped extension having a funnel lumen. The funnel lumen has a top opening and a bottom opening. The funnel lumen tapering from the top opening to the bottom opening. The bottom opening positioned and sized to communicate with the guide wire lumen of the catheter such that, when the catheter is disposed in the main lumen, the guide wire may be easily inserted into the top opening of the funnel lumen and into the guide wire lumen of the catheter.
摘要:
An insertion tool for use in inserting a guide wire into a guide wire lumen of a catheter for use in a lumen of an endoscope. The insertion tool includes a main body having a main lumen and a funnel-shaped extension connected to and disposed atop the main body. The funnel-shaped extension having a funnel lumen. The funnel lumen has a top opening and a bottom opening. The funnel lumen tapering from the top opening to the bottom opening. The bottom opening positioned and sized to communicate with the guide wire lumen of the catheter such that, when the catheter is disposed in the main lumen, the guide wire may be easily inserted into the top opening of the funnel lumen and into the guide wire lumen of the catheter.