Temporary stent
First Claim
1. Removable apparatus for temporarily supporting a region of a vessel in a body, the apparatus comprising a catheter having proximal and distal end portions, an elongate flexible shaft portion and a stent portion carried by a distal end portion of the shaft portionthe shaft portion including an elongate inner tubular member having an exterior, and an elongate outer tubular member concentrically positioned around the exterior of the inner tubular member, each of said tubular members having a proximal end and a distal end, the tubular members being movable axially with respect to each other and the distal end of the inner tubular member extending distally beyond the distal end of the outer tubular member, wherein at least the distal elongate portions of the inner and outer tubular members are comprised of closely wound helices of metal wire;
- the stent portion being comprised of a spring-like spiral coil body having proximal and distal end portions, the coil body being positioned with respect to the shaft portion of the catheter so that the distal end portion of the inner tubular member extends longitudinally through the coil body, the distal end portion of the coil being fixedly secured to the inner tubular member and the proximal end portion of the coil body being fixedly secured to the outer tubular member whereby axial rotation of at least one tubular member effects rotation of at least one of the ends of the coil body with respect to the other and, depending on the direction of the rotation, enlarges or decreases the diameter of the spiral coil body, andmeans at the proximal end portion of the catheter operatively connected to the shaft portion for effecting the axial rotation of the at least one tubular member and controlling same.
3 Assignments
0 Petitions
Accused Products
Abstract
Apparatus including a spiral coil body as a stent for temporarily supporting a body vessel internally, the spiral coil body being adjustable in diameter by relative rotation of at least one of the ends of the body from a proximal location.
295 Citations
32 Claims
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1. Removable apparatus for temporarily supporting a region of a vessel in a body, the apparatus comprising a catheter having proximal and distal end portions, an elongate flexible shaft portion and a stent portion carried by a distal end portion of the shaft portion
the shaft portion including an elongate inner tubular member having an exterior, and an elongate outer tubular member concentrically positioned around the exterior of the inner tubular member, each of said tubular members having a proximal end and a distal end, the tubular members being movable axially with respect to each other and the distal end of the inner tubular member extending distally beyond the distal end of the outer tubular member, wherein at least the distal elongate portions of the inner and outer tubular members are comprised of closely wound helices of metal wire; -
the stent portion being comprised of a spring-like spiral coil body having proximal and distal end portions, the coil body being positioned with respect to the shaft portion of the catheter so that the distal end portion of the inner tubular member extends longitudinally through the coil body, the distal end portion of the coil being fixedly secured to the inner tubular member and the proximal end portion of the coil body being fixedly secured to the outer tubular member whereby axial rotation of at least one tubular member effects rotation of at least one of the ends of the coil body with respect to the other and, depending on the direction of the rotation, enlarges or decreases the diameter of the spiral coil body, and means at the proximal end portion of the catheter operatively connected to the shaft portion for effecting the axial rotation of the at least one tubular member and controlling same. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. Removable apparatus for temporarily supporting a region of a vessel in a body, the apparatus comprising a catheter having proximal and distal end portions, an elongate flexible shaft portion and a stent portion carried by a distal end portion of the shaft portion;
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the shaft portion including an elongate inner tubular member having an exterior and an elongate outer tubular member concentrically positioned around the exterior of the inner tubular member, each of said tubular members having a proximal end and a distal end, the tubular members being movable axially with respect to each other and the distal end of the inner tubular member extending distally beyond the distal end of the outer tubular member; the stent portion being comprised of a spring-like spiral coil body, said coil body being further comprised of at least two parallel wound ribbons and having proximal and distal end portions, the coil body being positioned with respect to the shaft portion of the catheter so that the distal end portion of the inner tubular member extends longitudinally through the coil body, the distal end portion of the coil being fixedly secured to the inner tubular member and the proximal end portion of the coil body being fixedly secured to the outer tubular member whereby axial rotation of at least one tubular member effects rotation of at least one of the ends of the coil body with respect to the other and, depending on the direction of the rotation, enlarges or decreases the diameter of the spiral coil body, and means at the proximal end portion of the catheter operatively connected to the shaft portion for effecting the axial rotation of the at least one tubular member and controlling same.
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30. Removable apparatus for temporarily supporting a region of a vessel in a body, the apparatus comprising a catheter having proximal and distal end portions, an elongate flexible shaft portion and a stent portion carried by a distal end portion of the shaft portion;
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the shaft portion including an elongate inner tubular member having an exterior, an elongate outer tubular member concentrically positioned around the exterior of the inner tubular member, each of said tubular members having a proximal end and a distal end, said tubular members being movable axially with respect to each other, a two-piece telescoping arrangement for effecting said longitudinal relative movement between the inner and outer tubular members, one piece being connected to the inner tubular member, the other piece being connected to the outer tubular member, said telescoping arrangement further comprising means for preventing rotation of the two pieces relative to each other, the one piece being adapted to impart rotary turning motion to the inner tubular member, and the distal end of the inner tubular member extending distally beyond the distal end of the outer tubular member; the stent portion being comprised of a spring-like spiral coil body having proximal and distal end portions, the coil body being positioned with respect to the shaft portion of the catheter so that the distal end portion of the inner tubular member extends longitudinally through the coil body, the distal end portion of the coil being fixedly secured to the inner tubular member and the proximal end portion of the coil body being fixedly secured to the outer tubular member whereby axial rotation of at least one tubular member effects rotation of at least one of the ends of the coil body with respect to the other and, depending on the direction of the rotation, enlarges or decreases the diameter of the spiral coil body, and means at the proximal end portion of the catheter operatively connected to the shaft portion for effecting the axial rotation of the at least one tubular member and controlling same. - View Dependent Claims (31, 32)
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Specification