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Lumen stent

A lumen, tubular technology used in the field of interventional medical devices to solve problems such as large circumferential and axial deviations

Pending Publication Date: 2022-07-01
LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the stent-graft is compressed in the delivery catheter, it has compression wrinkles in the circumferential direction and is in an elongated state in the axial direction. If it is positioned by the development mark at this time, there will be a large circumferential and axial deviation

Method used

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Examples

Experimental program
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Effect test

no. 2 example

[0057] see Figure 8 and Figure 9 The difference between this embodiment and the first embodiment is that the restraint wire 233 includes a connected fixed portion 235, a restraint portion 237 and two locking portions 239. The two locking portions 239 are respectively connected to both ends of the restraint portion 237. The fixed portion 235 Located between the two locking portions 239 , the fixing portion 235 is fixedly connected with the tubular body 210 , and both the locking portions 239 are detachably connected with the limiting rod 231 . When both locking portions 239 are connected with the limiting rod 231 , the binding wires 233 pair Tubular body 210 for circumferential restraint

[0058] The fixing part 235 is located between the two locking parts 239, so that the restraining part 237 includes two parts located on both sides of the fixing part 235 in the circumferential direction. When the limiting rod 231 is separated from the two locking parts 235, the two parts o...

no. 3 example

[0062] see Figure 10 and Figure 11 In this embodiment, the limiting rod 331 is divided into a plurality of connected sections 331a by a plurality of restraining wires 333 .

[0063] Among the plurality of restraint wires 333 , the proximal end restraint wire 333 is the closest to the proximal end of the tubular body 310 , and the distal restraint wire 333 is the closest to the distal end of the tubular body 310 among the plurality of restraint wires 333 .

[0064] The difference between this embodiment and the above-mentioned embodiment is that in the region between the proximal restraint wire 333 and the distal restraint wire 333, the extending directions of the two adjacent segments 331a in the circumferential direction of the tubular body 310 are opposite, which can make the restriction The limiting rod 331 only extends in a small area, so as to prevent the rod body of the limiting rod 331 from being too close to the branch opening 325, thereby increasing the probability...

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Abstract

The invention provides a lumen stent which comprises a tubular main body with a plurality of axial planes and a semi-release device connected to the tubular main body, the semi-release device comprises a limiting rod and a plurality of binding lines arranged on the tubular main body, the binding lines are all detachably connected with the limiting rod, and when the binding lines are connected with the limiting rod, the binding lines are separated from the limiting rod. A plurality of binding lines are arranged on the tubular main body, the limiting rods extend along a curve between every two adjacent binding lines, and the limiting rods are located in at least two axial planes on rod bodies of every two adjacent binding lines. The binding lines in the lumen stent circumferentially restrain the lumen stent, so that the lumen stent can be in a semi-release state; therefore, the lumen stent can be adjusted and positioned, and the accuracy of axial and circumferential positioning of the lumen stent is improved.

Description

technical field [0001] The invention relates to the technical field of interventional medical devices, in particular to a lumen stent. Background technique [0002] In the past ten years, stent-graft endovascular isolation has been widely used in thoracic and abdominal aortic aneurysms and arterial dissection. of treatment. During the operation, under the monitoring of X-ray fluoroscopy, the stent-graft is sent to the lesion location through the corresponding delivery system, the stent-graft isolates the blood flow from the lesion location, and eliminates the influence of blood pressure on the lesion location, so as to achieve the purpose of cure. [0003] In order to solve the positioning problem of the stent-graft in the body, imaging marks are usually made at key positions of the stent, and the imaging marks are used to locate the stent-graft in the axial and circumferential directions. However, when the stent-graft is compressed in the delivery catheter, it has compres...

Claims

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Application Information

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IPC IPC(8): A61F2/07A61F2/966A61F2/97
CPCA61F2/07A61F2/966A61F2/97A61F2210/0014A61F2210/0061A61F2002/9665
Inventor 肖本好唐春炜
Owner LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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