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AssigneeSciMed Life Systems, Inc.
InventorsDavid White, William Belef, Lawrence Wasicek, Ronald Jabba
Estimating the term…
An improved catheter system having an ultrasonic imaging transducer coupled to a drive cable disposed within a lumen of a flexible tubular catheter body. An improvement including a reconfiguration of the ferrites in the hub assembly, such that the need for the gap between the ferrites is removed. A strain relief member is provide to increase the strength of the electrical transmission lines to enable them to withstand the tensile forces caused by either flushing and/or pull-back operations. A device which allows the electrical transmission lines to extend their length when placed in tension may also be employed to provide strain relief to the electrical transmission lines. Another improvement includes a counter-wound coil structure, which may either expand or contract as the drive cable is being rotated to strengthen the drive cable. The distal tip of the catheter body may be redesigned to provide a lumen which allows for the release of flushing fluids through a distal port in the guidewire lumen.
An improved catheter system of the type including (a) a tubular catheter body having a proximal portion, a distal portion, and a lumen therethrough;
An improved catheter system of the type including (a) a tubular catheter body having a proximal portion, a distal portion, and a primary lumen therethrough;
An improved catheter system of the type including (a) a tubular catheter body having a proximal portion, a distal portion, and a primary lumen therethrough;
An improved catheter system of the type including (a) a tubular catheter body having a proximal tubular portion, a distal tubular portion, and a lumen therethrough, and (b) a drive cable rotatably received in the lumen, wherein the improvement comprises an intermediate tubular portion formed on the tubular catheter body of a transitional material between the proximal tubular portion and the distal tubular portion, the transitional material being of a higher flexural modulus than the distal tubular portion and of a lower flexural modulus than the proximal tubular portion.
An improved catheter system of the type including (a) a tubular catheter body having a proximal portion, a distal portion, and a primary lumen therethrough, (b) a guidewire lumen coupled coaxially with the primary lumen on the distal portion of the catheter, having a wedge in between said lumens;
An improved catheter system of the type including (a) a tubular catheter body having a proximal portion, a distal portion, and a lumen therethrough, and (b) a drive cable rotatably received in the lumen, wherein the improvement comprises the drive cable comprising a first inner coil, a second inner coil, and an outer coil, the outer coil being wound in a direction opposite to the inner coils, the first inner coil expanding against the outer coil and the second inner coil expanding against the first inner coil when the drive cable is rotated, thereby increasing the column strength of the drive cable.
An improved catheter system of the type including (a) a tubular catheter body having a proximal portion, a distal portion, and a lumen therethrough, and (b) a drive cable rotatably received in the lumen, wherein the improvement comprises a first tubular member and a second tubular member arranged in a telescoping engagement, wherein the first tubular member is formed at least in part from a material, the material being a plastic or a polymer material, such as polyetheretherketone (PEEK).
Dependencies are inferred from the claim text.