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CN-122005151-A - Support and support system

CN122005151ACN 122005151 ACN122005151 ACN 122005151ACN-122005151-A

Abstract

The invention relates to a support, which comprises a tectorial membrane and a plurality of wave rings, wherein the wave rings are mutually spaced along the axial direction of the tectorial membrane in a natural state, the wave rings comprise a plurality of diamond structures and wire windings, and the wire windings are wound on the plurality of diamond structures so as to connect the plurality of diamond structures. A stent system comprising the stent described above, the stent system further comprising a balloon catheter assembly comprising a catheter, a balloon disposed on a distal end of the catheter, and a filter disposed on the distal end of the catheter and proximal to a proximal side of the balloon. According to the invention, when the stent is unevenly expanded, the mutual influence of adjacent wave rings is reduced as much as possible, and further, the displacement, shrinkage or slipping of the stent from the saccule caused by uneven stress in the expansion process is avoided. Furthermore, the degree of freedom of a single diamond structure can be ensured. Avoiding the stent from being shaped to a curved shape when expanded.

Inventors

  • CHEN QISHEN
  • TANG HUA

Assignees

  • 深圳市领先医疗服务有限公司

Dates

Publication Date
20260512
Application Date
20241111

Claims (11)

  1. 1. A stent for interventional therapy of vascular lesions is characterized by comprising a tectorial membrane and a plurality of wave rings, wherein the wave rings are mutually spaced along the axial direction of the tectorial membrane in a natural state, and the wave rings comprise a plurality of diamond structures and wire windings, and the wire windings are wound on the diamond structures to connect the diamond structures.
  2. 2. The stent of claim 1, wherein the diamond-shaped structure has a proximal end and a distal end, wherein the number of wires is two, one wire is wound from the proximal end of one diamond-shaped structure to the middle part, extends out of the diamond-shaped structure from the middle part into the other diamond-shaped structure, is wound from the middle part of the other diamond-shaped structure towards the distal end, and is wound from the distal end of one diamond-shaped structure to the middle part, extends out of the diamond-shaped structure from the middle part, is wound with the wire into the other diamond-shaped structure after being mutually wound, and is wound from the middle part of the other diamond-shaped structure towards the proximal end.
  3. 3. The stent of claim 1, wherein a plurality of the diamond-shaped structures of one wave ring and a plurality of the diamond-shaped structures of the adjacent wave ring are arranged in a staggered manner, and a central axis of the diamond-shaped structures of one wave ring in the axial direction is arranged in a collinear manner with a central line between two adjacent diamond-shaped structures of the adjacent wave ring.
  4. 4. The stent of claim 1, wherein the plurality of diamond-shaped structures of one band are arranged in one-to-one correspondence with the plurality of diamond-shaped structures of an adjacent band.
  5. 5. The stent of claim 1, wherein the wave rings are woven from metal wires or the diamond-shaped structures are cut from a metal tube body, the wires are wound from metal wires, the proximal ends and the distal ends of the diamond-shaped structures comprise arc-shaped structures and/or linear structures, and the interval distance between two adjacent wave rings is 0.2mm-0.6mm.
  6. 6. The stent of claim 3 or 4, further comprising a filling portion having a cavity, the filling portion being disposed on an outer surface of the covering film, the cavity of the filling portion being disposed with a filling fluid.
  7. 7. The stent of claim 6, wherein the end of the stent comprises an end band, the end band comprises a first band and a second band, the first band is spaced from the second band, and the filler is disposed between the first band and the second band.
  8. 8. The stent of claim 6, wherein the filling portion has a ring-shaped structure, and the filling portion is disposed between two adjacent wave rings.
  9. 9. The stent of claim 6, wherein the number of the filling portions is plural, the filling portions are in a straight line structure, and plural filling portions are disposed between every two adjacent diamond structures of each wave ring.
  10. 10. The stent of claim 6, wherein the filling portion comprises a plurality of annular filling portions and a plurality of linear filling portions, the annular filling portions are arranged between two adjacent wave rings, the plurality of linear filling portions are arranged between every two adjacent diamond-shaped structures of each wave ring, and the plurality of annular filling portions and the plurality of linear filling portions are communicated with each other.
  11. 11. A stent system comprising the stent of any one of claims 1-10, further comprising a balloon catheter assembly comprising a catheter, a balloon disposed on a distal end of the catheter, and a filter disposed on a distal end of the catheter and proximal to a proximal side of the balloon.

Description

Support and support system Technical Field The invention relates to the field of interventional medicine, in particular to a bracket and a bracket system. Background In recent years, the use of interventional therapy for the treatment of cardiovascular diseases has become a trend. Along with the continuous development of interventional technology, the advantage of treating vascular lesions by adopting a stent is prominent, the balloon expandable stent is one of the stents, and the stent is expanded and supported in the blood vessel by sleeving the stent on the balloon and filling the balloon. The existing balloon expansion stent is characterized in that firstly, the balloon possibly expands unevenly when being filled, for example, one end of the balloon is firstly filled and expanded, one end of the stent can be driven to expand firstly, and at the moment, the stent can displace relative to the balloon due to uneven stress, so that the stent cannot be fully expanded or slipped from the balloon. Secondly, the uneven filling expansion of the balloon can also cause the stent to shrink, for example, the two ends of the balloon are filled and expanded first, so that the two ends of the stent are expanded first, at this time, the two ends of the stent are subjected to the force extruded to the central position of the stent, so that the stent is shrunk, and the stent cannot effectively support the lesion part. Moreover, the uneven inflation of the balloon may also cause the stent to be shaped, for example, to assume a curved shape after expansion of the stent, thereby resulting in the adherence of the stent, affecting the medical outcome of the overall procedure. Disclosure of Invention In order to overcome the problems in the prior art, the invention provides a novel bracket and a bracket system. The technical problem is solved by providing a stent for interventional therapy of vascular lesions, wherein the stent comprises a tectorial membrane and a plurality of wave rings, the wave rings are mutually spaced along the axial direction of the tectorial membrane in a natural state, the wave rings comprise a plurality of diamond structures and wire windings, and the wire windings are wound on the plurality of diamond structures so as to connect the plurality of diamond structures. In some embodiments of the present invention, the diamond-shaped structure has a proximal end and a distal end, the number of the wires is two, one wire is wound from the proximal end of one diamond-shaped structure to the middle part, extends out of the diamond-shaped structure from the middle part and enters the other diamond-shaped structure, is wound from the middle part of the other diamond-shaped structure to the distal end, and the other wire is wound from the distal end of one diamond-shaped structure to the middle part, extends out of the diamond-shaped structure from the middle part, enters the other diamond-shaped structure after being intertwined with the wire, and is wound from the middle part of the other diamond-shaped structure to the proximal end. In some embodiments of the present invention, the plurality of diamond structures of one wave ring and the plurality of diamond structures of the adjacent wave ring are staggered, and the central axis of the axial direction of the diamond structure of one wave ring is arranged in line with the central line between the two adjacent diamond structures of the adjacent wave ring. In some embodiments of the present invention, the plurality of diamond structures of one wave band are arranged in one-to-one correspondence with the plurality of diamond structures of the adjacent wave band. In some embodiments of the present invention, the wave ring is woven by metal wires, or the diamond-shaped structure is cut by a metal tube body, the wire winding is made of metal wires, the proximal end and the distal end of the diamond-shaped structure comprise arc-shaped structures and/or linear structures, and the interval distance between two adjacent wave rings is 0.2mm-0.6mm. In some embodiments of the invention, the stent further comprises a filling portion having a cavity, the filling portion being disposed on an outer surface of the covering film, a filling liquid being disposed within the cavity of the filling portion. In some embodiments of the invention, the end of the stent comprises an end band comprising a first band and a second band, the first band being spaced from the second band, and the filling portion being disposed between the first band and the second band. In some embodiments of the invention, the filling portion has a ring-shaped structure, and the filling portion is disposed between two adjacent wave rings. In some embodiments of the present invention, the number of the filling portions is a plurality, the filling portions are in a linear structure, and the plurality of filling portions are disposed between every two adjacent diamond structures of each wave ring. In some embod