Hemangioma stent weaving process

A technology of hemangioma and process, applied in stents, medical science, prostheses, etc., can solve the problems of restenosis, increase expansion pressure, etc., and achieve the effect of reducing tissue damage and avoiding stenosis

Inactive Publication Date: 2021-12-31
萃杰医疗科技(南京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technical solutions, the early metal stents have achieved remarkable curative effect after clinical treatment. Most hemangioma stents are made of stainless steel, nickel-titanium alloy, platinum, gold, biodegradable biomaterials, multi-layer composite materials, etc. A mesh body formed by weaving a metal monofilament, the mesh body has a uniform weaving density structure, but the existing hemangioma stent has a uniform front and rear diameter, which increases the local expansion pressure when the lesion of the blood vessel expands, and The lesion area will grow through the network space, and restenosis will appear

Method used

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  • Hemangioma stent weaving process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: A kind of hemangioma stent braiding process, such as Figure 1-2 and Figure 4 As shown, the first shaping section 1 is composed of a plurality of first petals, and the first shaping section 1 has a trumpet-shaped structure, and the inner side of the first petals is provided with a positioning part 8 that matches the positioning groove 7 .

[0032] The stent shaping component composed of the first shaping section 1, the transition shaping section 2 and the second shaping section 6, after the stent is braided, its two ends are in an expanded state, which reduces the extrusion effect on the protruding part of the lesion when it is deployed in the blood vessel. And the front and rear blood vessels far away from the lesion are slightly expanded to effectively avoid narrowing, and the middle part of the stent is coated with an inert film to prevent the protrusions of the lesion from penetrating through the mesh gap, and the lesion re-grows to cause stenosis. ...

Embodiment 2

[0033] Embodiment 2: A kind of hemangioma stent braiding process, such as Figure 2-3 and Figure 5 As shown, the first shaping section 1 is composed of a plurality of first petals, and the first shaping section 1 has a cylindrical structure, and the inner side of the first petals is provided with a positioning part 8 that matches the positioning groove 7 .

[0034] The stent shaping assembly composed of the first shaping section 1, the transition shaping section 2 and the second shaping section 6, after braiding, one end of the stent is in an expanded state, which reduces the extrusion effect on the protruding part of the lesion when it is deployed in the blood vessel, and The middle part of the stent is coated with an inert film to prevent the bulge of the lesion from penetrating through the mesh gap, and the lesion re-grows to cause stenosis. At the same time, the extended end faces the direction of blood entry, and the stent is fixed by the elasticity of the blood vessel ...

Embodiment 3

[0037] Embodiment 3: A kind of hemangioma stent braiding process, such as Figure 6 As shown, the weaving grooves are distributed around in a wave shape, and the metal wires 10 are embedded in the weaving grooves to form a rhombus network structure.

[0038] The metal wire 10 is a round wire or a flat wire, and the welded part of the joint 11 in the metal wire 10 is optimized to remove protrusions and burrs.

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Abstract

The invention discloses a hemangioma stent weaving process, and relates to the technical field of medical instrument production. The hemangioma stent weaving process specifically comprises a shaping assembly matched with a stent; the shaping assembly is composed of a first shaping section, a plurality of transition shaping sections and a second shaping section; the transition shaping sections are distributed between the first shaping section and the second shaping section; and circular holes are formed in the first shaping section, the transition shaping sections and the second shaping section, and a shaping tightening latch is inserted into the circular holes. When the stent is unfolded in a blood vessel, the extrusion effect on the protruding portion of a focus is reduced, damage to vascular wall tissue can be reduced, the stent and the blood vessel can be kept fixed, the front-end blood vessel and the rear-end blood vessel far away from the focus are slightly expanded, and the narrowing phenomenon is effectively avoided; and the middle-layer portion of the stent is coated with an inert film, protrusions at lesion positions are prevented from penetrating through net gaps, and the stenosis phenomenon caused by regrowth of lesions is avoided.

Description

technical field [0001] The present invention relates to the technical field of medical device production, in particular to a hemangioma stent weaving process. Background technique [0002] Vascular stent refers to the placement of internal stents in the diseased segment on the basis of lumen balloon expansion to support the stenotic and occluded segment of the vessel, reduce elastic recoil and reshaping of the vessel, and maintain smooth blood flow in the lumen. Some internal stents can also prevent restenosis. Mainly divided into coronary stents, cerebrovascular stents, renal artery stents, aortic stents, etc. [0003] In vascular stent surgery, an internal stent is placed in the diseased segment to support the stenotic and occluded segment of the vessel, reduce elastic recoil and reshaping of the vessel, and maintain smooth blood flow in the lumen. In the existing technical solutions, the early metal stents have achieved remarkable curative effect after clinical treatmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/90
CPCA61F2/90A61F2240/001
Inventor 王丽花晋丹丹刘阳夏前利
Owner 萃杰医疗科技(南京)有限公司
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