Abstract: A catheter tip assembly comprises a marker band and a catheter tip. The catheter tip has an inner lumen therethrough and an outer portion and an inner portion with the marker band disposed therebetween.

Abstract: An athertome assembly comprises a series of spanning and descending members extended between a segmented base and a cutting surface. This athertome assembly configuration provides both flexibility and structural strength which faciliates the implantation of medical devices.

Abstract: Medical devices that include micromachined hypotubes or that have themselves been micromachined can provide advantages in flexibility, strength and other desirable properties. Examples of such medical devices may include catheters such as guide catheters and balloon catheters. Such devices may also include dual shaft medical devices in which an outer shaft is reversibly lockable onto an inner shaft.

Abstract: An athertome assembly comprises a series of spanning and descending members extended between a segmented base and a cutting surface. This athertome assembly configuration provides both flexibility and structural strength which faciliates the implantation of medical devices.

Abstract: An athertome assembly comprises a series of spanning and descending members extended between a segmented base and a cutting surface. This athertome assembly configuration provides both flexibility and structural strength which facilitates the implantation of medical devices.

Abstract: Stent delivery catheters adapted to provide both flexibility and strength are disclosed. Such stent delivery catheters may have outer shafts adapted for tensile strength and inner shafts adapted for compressive strength. In some instances, at least one of the outer shaft and/or the inner shaft may include a micromachined portion.

Abstract: An athertome assembly comprises a series of spanning and descending members extended between a segmented base and a cutting surface. This athertome assembly configuration provides both flexibility and structural strength which facilitates the implantation of medical devices.

Abstract: A dilatation balloon for use in combination with a catheter device, the balloon having a waist, cone and body portion and having a first layer formed from a first polymeric composition, the balloon having a second layer disposed on at least a portion of the first layer, the second layer formed from a second polymeric composition which is crosslinked on at least a portion of the dilatation balloon, and methods of making and using the same.

Abstract: An athertome assembly comprises a series of spanning and descending members extended between a segmented base and a cutting surface. This athertome assembly configuration provides both flexibility and structural strength which facilitates the implantation of medical devices.

Abstract: A coextrusion employing a tie layer between two layers of different polymer materials. The tie layer is formed in the extrusion melt of a composition comprising one of the two polymer materials and a coupling agent that includes functional groups that are reactive at least with functional groups on the second polymer. The coupling agent may be incorporated into the tie layer material in amounts above 5% by weight.

Abstract: An angioplasty catheter and method for making and using the same. An angioplasty catheter comprises an inner tube having a proximal end, a distal end, and a lumen extending therethrough; an outer tube disposed over the inner tube, the outer tube having a proximal end and a distal end; a balloon coupled to the distal end of the outer tube; an inflation lumen defined between the inner tube and the outer tube, the inflation balloon in fluid communication with the balloon; and a support block coupled to the inner tube. In addition, a method for manufacturing an angioplasty catheter is disclosed.

Abstract: A catheter assembly and method for constructing same comprises engagement of a proximal tubular member to a distal outer tubular member. At least a portion of the exterior surface of the proximal tubular member comprises at least one thermoplastic polymer. At least a portion of the end region of the distal outer tubular member is engaged to at least a portion of the end region of the proximal tubular member to define an engagement region. The proximal tubular member and the distal outer tubular member define a continuous central lumen therethrough. At least a portion of the proximal tubular member is disposed about an inner support layer. At least a portion of the inner support layer extends distally across the engagement region and into the lumen of the distal outer tubular member.

Abstract: A medical device in which a melt processed part has different crystallized properties at different locations. The part is formed of a polymer composition by inclusion a of polymer crystallization modifier in the composition making up at least a portion of such part, the amount of the polymer crystallization modifier is varied at different locations on the part in accordance with the desired difference in crystallization behavior.

Abstract: An angioplasty catheter and method for making and using the same. An angioplasty catheter comprises an inner tube having a proximal end, a distal end, and a lumen extending therethrough; an outer tube disposed over the inner tube, the outer tube having a proximal end and a distal end; a balloon coupled to the distal end of the outer tube; an inflation lumen defined between the inner tube and the outer tube, the inflation balloon in fluid communication with the balloon; and a support block coupled to the inner tube. In addition, a method for manufacturing an angioplasty catheter is disclosed.

Abstract: A catheter assembly and method for constructing same comprises engagement of a proximal tubular member to a distal outer tubular member. At least a portion of the exterior surface of the proximal tubular member comprises at least one thermoplastic polymer. At least a portion of the end region of the distal outer tubular member is engaged to at least a portion of the end region of the proximal tubular member to define an engagement region. The proximal tubular member and the distal outer tubular member define a continuous central lumen therethrough. At least a portion of the proximal tubular member is disposed about an inner support layer. At least a portion of the inner support layer extends distally across the engagement region and into the lumen of the distal outer tubular member.

Abstract: The present invention relates generally to intravascular catheters. More particularly, the present invention pertains to angioplasty catheters with a support block. According to a preferred embodiment, an angioplasty catheter comprises an inner tube having a proximal end, a distal end, and a lumen extending therethrough; an outer tube disposed over the inner tube, the outer tube having a proximal end and a distal end; a balloon coupled to the distal end of the outer tube; an inflation lumen defined between the inner tube and the outer tube, the inflation balloon in fluid communication with the balloon; and a support block coupled to the inner tube. In addition, a method for manufacturing an angioplasty catheter is disclosed.

Abstract: An improved perfusion system for a dilatation catheter includes inlet openings disposed at an acute angle with the normal direction of vascular flow.

Abstract: A stent delivery device having a pair of balloons at a proximal end of a catheter and having separate lumens for selectively inflating the respective balloons. The outer balloon is relatively compliant and the inner balloon is relatively non-compliant. A central lumen is provided for a guide wire. A stent is carried by the delivery device within an axially retractable sheath at the distal end of the catheter and is deployed by retraction of the sheath and inflation of the compliant balloon, and the stent is subsequently expanded by inflation of the non-compliant balloon.

Abstract: A stent delivery device having a pair of balloons at a proximal end of a catheter and having separate lumens for selectively inflating the respective balloons. The outer balloon is relatively compliant and the inner balloon is relatively non-compliant. A central lumen is provided for a guide wire. A stent is carried by the delivery device within an axially retractable sheath at the distal end of the catheter and is deployed by retraction of the sheath and inflation of the compliant balloon, and the stent is subsequently expanded by inflation of the non-compliant balloon.