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CN-121971137-A - Aneurysm turbulent flow device and conveying system

CN121971137ACN 121971137 ACN121971137 ACN 121971137ACN-121971137-A

Abstract

The invention relates to an aneurysm turbulence device which comprises an outer turbulence support and an inner turbulence support, wherein the outer turbulence support and the inner turbulence support are both formed by weaving a plurality of weaving wires, the inner turbulence support is arranged in the outer turbulence support, one end of the inner turbulence support close to the far end is provided with a protection part with an arc-shaped cross section, the protection part is arranged in a protruding mode towards the inner turbulence support, one end of the protection part close to the far end is connected with one end of the outer turbulence support close to the far end, a developing part is arranged at one end of the outer turbulence support close to the near end and is connected with one end of the inner turbulence support close to the near end, the cross section area of the outer turbulence support is gradually reduced from the direction of the far end to the direction of the near end, and the cross section area of the inner turbulence support is gradually reduced, or the cross section area of the outer turbulence support and the cross section area of the inner turbulence support are kept consistent. The invention also relates to a conveying system.

Inventors

  • LI BINBIN
  • LV WEIYAN
  • ZHANG YAO

Assignees

  • 北京久事神康医疗科技有限公司

Dates

Publication Date
20260505
Application Date
20260403

Claims (13)

  1. 1. An aneurysm turbulence device is provided, which comprises a main body, characterized by comprising the following steps: The inner-layer turbulent flow support is arranged in the outer-layer turbulent flow support, one end of the inner-layer turbulent flow support close to the far end is provided with a protection part with an arc-shaped section, the protection part is arranged towards the inner side of the inner-layer turbulent flow support in a protruding way, and one end of the protection part close to the far end is connected with one end of the outer-layer turbulent flow support close to the far end; The developing piece is arranged at one end of the outer-layer turbulent flow support close to the proximal end and is connected with one end of the inner-layer turbulent flow support close to the proximal end; the cross section area of the outer turbulent flow support is gradually reduced from the direction of the far end to the direction of the near end, and the cross section area of the inner turbulent flow support is gradually reduced, or the cross section area of the outer turbulent flow support and the cross section area of the inner turbulent flow support are kept consistent.
  2. 2. The aneurysm turbulence device of claim 1 wherein, The outer layer turbulent flow support is folded inwards towards the inner layer turbulent flow support at one end close to the far end to form a folded edge, and one end of the inner layer turbulent flow support close to the far end is located in a connecting gap between the folded edge and the outer layer turbulent flow support.
  3. 3. The aneurysm turbulence device of claim 2 wherein, The folded edge is curled into the inner layer turbulence bracket and forms a protective sub-part.
  4. 4. An aneurysm turbulence device according to any of claims 1 to 3 wherein, The inner-layer turbulent flow support is provided with a plurality of supporting parts, and the supporting parts are arranged towards the outer-layer turbulent flow support in a protruding mode; the plurality of supporting parts are sequentially arranged at intervals from the distal direction to the proximal direction.
  5. 5. The aneurysm turbulence device of claim 4 wherein, The outer-layer turbulent flow support is provided with a plurality of first flexible parts, and the first flexible parts are arranged in a protruding way towards the inner-layer turbulent flow support; the first flexible parts are sequentially arranged at intervals from the direction of the far end to the direction of the near end; One end of the first flexible part near the proximal end is abutted against one end of the supporting part near the distal end.
  6. 6. The aneurysm turbulence device of claim 1 wherein, The inner-layer turbolator support comprises a first turbolator frame, a second turbolator frame and a supporting spring, wherein the first turbolator frame is connected with the second turbolator frame through the supporting spring, the supporting spring is in a variable-diameter spiral shape, and the diameter of the supporting spring is gradually reduced from the position of the far end to the position of the near end.
  7. 7. The aneurysm turbulence device of claim 1 wherein, The middle part of the inner-layer turbulent flow support is provided with a second flexible part which is arranged in a protruding way towards the inner part of the inner-layer turbulent flow support; the aperture of the second flexible portion is smaller than the aperture of the guard portion.
  8. 8. The aneurysm turbulence device of claim 1, further comprising: the diameter of the traction spring gradually decreases from the direction of the distal end to the direction of the proximal end; one end of the traction spring close to the far end is connected with one end of the protection part or one end of the outer-layer turbulent flow support close to the far end, and one end of the traction spring close to the near end is connected with one end of the inner-layer turbulent flow support close to the near end or the developing part.
  9. 9. The aneurysm turbulence device of claim 1 wherein the visualization member comprises: The developing outer ring is arranged at one end, close to the proximal end, of the outer layer turbulence support; The inner developing ring is positioned in the outer developing ring and is detachably connected with the outer developing ring.
  10. 10. The aneurysm turbulence device of claim 9 wherein, The annular hole wall of the developing outer ring is provided with a plurality of limit grooves which are all positioned at one end of the developing outer ring close to the far end, and the limit grooves are all positioned in the outer layer turbulence support and are uniformly distributed around the axis of the developing outer ring; The outer wall of the developing inner ring is provided with at least one limiting bulge which is positioned at one end of the developing inner ring close to the far end; when the developing inner ring is positioned in the developing outer ring, the limiting bulge is arranged in a limiting groove, and the metal coverage rate of the aneurysm turbulence device is changed by adjusting the limiting bulge into any other limiting groove.
  11. 11. The aneurysm turbulence device of claim 9 wherein, The outer layer turbulence support is provided with a plurality of outer layer turbulence support, wherein the outer layer turbulence support is provided with a plurality of outer layer turbulence support, and the outer layer turbulence support is provided with a plurality of outer layer turbulence support; one end of the developing inner ring, which is close to the proximal end, is provided with positioning teeth, and the number of the notches is multiple times of that of the positioning teeth; when the developing inner ring is positioned in the outer turbulent flow support, the positioning teeth are arranged in a notch, and the metal coverage rate of the aneurysm turbulent flow device is changed by adjusting the positioning teeth in any other notch.
  12. 12. A delivery system, comprising: the aneurysm turbulence device of any of claims 1-8 disposed within a lumen of a microcatheter; one end of the pushing guide wire is arranged in the lumen and is connected with the developing part of the aneurysm turbulence device.
  13. 13. A delivery system, comprising: the aneurysm turbulence device according to any of claims 9 to 12 disposed within a lumen of a microcatheter; one end of the pushing guide wire is arranged in the lumen and is connected with the developing outer ring; and one end of the other pushing guide wire is arranged in the lumen and is connected with the developing inner ring.

Description

Aneurysm turbulent flow device and conveying system Technical Field The invention relates to the technical field of aneurysm turbulence devices, in particular to an aneurysm turbulence device and a conveying system. Background Due to local weakness or structural defects in the vessel wall, the vessel wall may bulge outwardly, forming a balloon-like or shuttle-like abnormal expansion, known medically as an aneurysm. In particular intracranial aneurysms, which, once ruptured, can lead to severe intracranial hemorrhage, constitute an extremely serious threat to the life health of the patient. Accordingly, the timely and effective diagnosis and treatment of intracranial aneurysms is a significant challenge in clinical medicine. In order to effectively treat aneurysms, particularly intracranial aneurysms, a variety of interventional treatments have been developed by the medical community. Among them, by implanting a turbulent device inside an aneurysm or at the parent artery, it has become an important therapeutic strategy. The turbulent flow device is usually woven by a precise wire mesh, and the working principle of the turbulent flow device is to change the hemodynamic environment in the aneurysm, slow down the blood flow velocity entering the tumor cavity, promote the formation of thrombus in the aneurysm, and finally realize the occlusion of the aneurysm and the vascular remodeling of the carrying aneurysm, thereby achieving the purpose of curing the aneurysm. Compared to traditional methods such as coil embolization, the turbulent devices present unique advantages in the treatment of certain complex aneurysms. Despite the significant advances made by turbulator devices in the treatment of aneurysms, there are certain limitations in the prior art. In particular, during implantation of the turbulence devices into the lumen of an aneurysm or parent artery, mechanical damage to the inner wall of the aneurysm, or even perforation, may occur during deployment or positioning of the device due to the structural features of the device itself (e.g., the potentially rigid edges or complex lattice structures) and the vulnerability of the walls of the aneurysm. This injury can lead to severe intratumoral hemorrhage, which in turn can lead to a series of life-threatening complications that seriously affect the safety of the procedure. Disclosure of Invention In order to solve or at least partially solve the technical problems, the invention provides an aneurysm turbulence device and a delivery system. The invention provides an aneurysm turbulence device which comprises an outer turbulence support, an inner turbulence support and a developing piece, wherein the outer turbulence support and the inner turbulence support are formed by weaving a plurality of weaving wires, the inner turbulence support is arranged in the outer turbulence support, one end of the inner turbulence support close to the far end is provided with a protection part with an arc-shaped cross section, the protection part protrudes inwards towards the inner turbulence support, one end of the protection part close to the far end is connected with one end of the outer turbulence support close to the far end, the developing piece is arranged at one end of the outer turbulence support close to the near end and connected with one end of the inner turbulence support close to the near end, the cross section area of the outer turbulence support gradually decreases from the direction of the far end to the direction of the near end, and the cross section area of the inner turbulence support gradually decreases, or the cross section area of the outer turbulence support and the cross section area of the inner turbulence support are kept consistent. Optionally, one end of the outer spoiler support close to the distal end is folded into the inner spoiler support to form a folded edge, and one end of the inner spoiler support close to the distal end is located in a connecting gap between the folded edge and the outer spoiler support. Optionally, the folded edge is curled into the inner layer turbulence bracket and forms a protective sub-portion. Optionally, the inner-layer turbulent flow support is provided with a plurality of supporting parts, the supporting parts are all arranged in a protruding way towards the outer-layer turbulent flow support, and the supporting parts are sequentially arranged at intervals from the direction of the far end to the direction of the near end. Optionally, the outer spoiler support is provided with a plurality of first flexible parts, the plurality of first flexible parts are all arranged towards the inner spoiler support in a protruding mode, the plurality of first flexible parts are sequentially arranged at intervals from the distal end to the proximal end, and one end of the first flexible part close to the proximal end is abutted against one end of the supporting part close to the distal end. Optionally, the inner layer vortex supp