摘要:
A balloon catheter having a distal end, including an elongated catheter shaft having a proximal end, a distal end, a proximal shaft section, a distal shaft section, a guidewire receiving lumen extending along at least a portion thereof to a port at the catheter shaft distal end, and an inflation lumen; a balloon on the distal catheter shaft section and having an inflatable interior in fluid communication with the inflation lumen, proximal and distal ends, a proximal balloon shaft section adjacent the balloon proximal end, and a distal balloon shaft section adjacent the balloon distal end and being adhesively secured to the catheter shaft; and a tip member on the distal end of the catheter having proximal and distal ends; and being in fluid communication with the catheter shaft guidewire receiving lumen; the proximal end adhesively joined to the balloon distal shaft section and the catheter shaft.
摘要:
A medical device, and particularly an intracorporeal device for therapeutic or diagnostic use, comprising a silicone polyurethane. One embodiment of the invention is a medical device having a body formed of melt process extruded, porous silicone polyurethane material. In a method of the invention, the silicone polyurethane is combined with a porogen and then melt process extruded into a desired shape such as a tubular body. The porogen is then extracted from the extrudate, to form the extruded, melt processed, porous silicone polyurethane tubular body. The medical device, such as a stent cover, vascular graft, or catheter balloon, formed of the silicone polyurethane has excellent biostability, strength, and flexibility.
摘要:
The present invention includes a drug release system. The drug release system comprises a bulk polymer phase and a polymeric drug-enriched phase within the bulk polymer phase. At least one drug is incorporated into the drug-enriched phase.
摘要:
An intraluminal catheter comprising an elongated catheter shaft having proximal and distal ends and at least one lumen, and a tip member on a distal end of the catheter having a proximal end spaced distally apart from the distal end of the catheter shaft.
摘要:
An expandable stent to be positioned and implanted at the intersection of a great vessel and a branch vessel. A deployable stop engages the wall of the great vessel surrounding the ostium and the stent body extends into and is implanted in a branch vessel. A sheath holds the stent in a compressed state during delivery and a retainer holds the stop in an undeployed position while the delivery system is advanced to a desired location at the intersection of the great vessel and the branch vessel.
摘要:
A method of joining two members of a medical device wherein at least one of the members has a thin layer of joinable material deposited on the surface thereof by vapor deposition, preferably, physical vapor deposition. A guidewire for advancement of intraluminal medical devices may be manufactured by depositing a thin layer of joinable material on the surface of a component which is made from a reactive alloy with a tenacious oxide layer. The thin layer of joinable material facilitates joining difficult to bond materials with other components of the guidewire. Physical vapor deposition may also be used to treat components of medical devices, such as distal guidewire segments, in order to alter their mechanical properties. Specifically, a pseudoelastic alloy segment may be made shapeable by vapor deposition of a non-pseudoelastic metal thereon.