CN116211562A

CN116211562A - Bump support

Info

Publication number: CN116211562A
Application number: CN202310497663.8A
Authority: CN
Inventors: 李彬彬; 吕学良; 吕纬岩; 孙剑
Original assignee: Beijing Jiushi Shenkang Medical Technology Co ltd
Current assignee: Beijing Jiushi Shenkang Medical Technology Co ltd
Priority date: 2023-05-06
Filing date: 2023-05-06
Publication date: 2023-06-06
Anticipated expiration: 2043-05-06
Also published as: CN116211562B

Abstract

The invention discloses a bump support, which is provided with two open ends and comprises at least two support ring units and at least one elastic bulge unit, wherein the support ring units are distributed at intervals along the length direction of the support, two adjacent support ring units are connected through the elastic bulge units, the rod width or wire diameter of a single wire of each elastic bulge unit is 0.03-0.1 mm, the elastic bulge units can be concave and/or convex inwards, and the metal coverage rate of the elastic bulge units is smaller than or equal to that of the support ring units. The anti-fracture problem of the intravascular stent in the prior art can be solved, the support performance of the stent on the blood vessel is guaranteed, and the damage of the stent on the blood vessel is reduced.

Description

Bump support

Technical Field

The invention relates to the field of treatment of intracranial vascular diseases, in particular to a bump bracket.

Background

At present, cerebral apoplexy is mainly hemorrhagic cerebral apoplexy and ischemic cerebral apoplexy, the treatment means of the hemorrhagic cerebral apoplexy widely applied is stent-assisted spring coil treatment, the treatment of the ischemic cerebral apoplexy aiming at intravascular stenosis, and stent implantation is also widely discussed. The stent is basically a cylindrical stent with two flared ends, and the effective section is generally a cylinder with uniform diameter or is in a conical structure. The stent is implanted into a blood vessel and can not shift, the fracture resistance of the stent is particularly important, the radial supporting force of the stent has larger influence on the shifting performance of the stent, the diameter of the whole stent is increased, or the rod width or the wire diameter is increased to improve the radial supporting force, the stronger the supporting performance of the blood vessel is, the stent is not easy to shift, but the overlarge radial supporting force can increase the stimulation of the stent to the inner wall of the blood vessel, so that the endothelium is overgrown to cause the inner stenosis of the stent, and meanwhile, the stent is directly bent in a straight line form at the bending part of the inner wall of the blood vessel to influence the fracture resistance of the stent and has larger stimulation to the blood vessel.

In the prior art, the displacement resistance and the folding resistance of the bracket cannot be uniformly met, and particularly for a laser cutting bracket, the folding resistance of the bracket is poor. Aiming at the poor bending resistance of the bracket, the bracket is designed in an open loop in the prior art, and the linkage of multiple rows of grids is reduced by utilizing the differential concept, so that the bending resistance is improved. But inside the bending radius of the open-loop stent, two rows of grids and the vessel wall form a triangle, the joint effect with the vessel inner wall is poor, and the support property on the vessel inner wall is poor. The metal stent in the prior art has strong radial supporting force on the inner wall of the blood vessel, basically limits the contraction performance of the blood vessel, has larger damage to the blood vessel and is easy to cause restenosis.

Disclosure of Invention

The invention provides a bump support, which solves the problem of fracture resistance of an intravascular support in the prior art, ensures the support performance of the support on a blood vessel and reduces the damage of the support on the blood vessel.

The specific technical scheme is as follows: the utility model provides a bump support, both ends are the opening form, includes two at least support ring unit and at least one elastic bulge unit, support ring unit is along support length direction interval distribution, adjacent two pass through between the support ring unit elastic bulge unit connects, and the pole width or the wire diameter of the single silk of elastic bulge unit are 0.03mm-0.1mm, the elastic bulge unit can indent and/or evagination, the metal coverage ratio of the elastic bulge unit is less than or equal to the metal coverage ratio of support ring unit.

Preferably, the elastic protruding units are uniformly arranged along the circumferential direction of the support ring unit and are in a spiral line or smooth polygonal structure.

Preferably, the maximum outer diameter of the elastic protruding unit is 0.1 mm-1 mm larger than the outer diameter of the bracket ring unit.

Preferably, the outer diameter of the stent ring unit is larger than or equal to the inner diameter of the blood vessel.

Preferably, the elastic bulge unit is adapted to deform with the contraction or the relaxation of the blood vessel.

Preferably, when the blood vessel is in a contracted or relaxed state, the elastic bulge unit bulges outside the bump bracket, and the bulge height is not more than 1mm.

Preferably, when the blood vessel is in a bending state, the elastic protruding unit is recessed towards the inside of the bump bracket near the bending part of the blood vessel, and the depth of the recess is not more than 1mm.

Preferably, the elastic protruding unit is composed of a single wire or a plurality of wires, and developing marks are arranged on the wires.

Preferably, the protruding angle of the elastic protruding unit and the axial included angle of the bump support are 5-90 degrees.

Preferably, the top end of the elastic protruding unit is of a smooth arc structure.

The beneficial effects of the invention are as follows:

the bump bracket provided by the invention has the advantages that the bump unit structure is arranged on the bracket, so that the radial supporting force is increased, the supporting performance on blood vessels is ensured, the diameter of the whole bracket is not required to be increased, and the bump unit structure can generate relative deformation, so that the friction force and shearing force of the bracket on the blood vessels during the vasoconstriction and diastole are reduced, the damage on the blood vessels is reduced, and the granulation tissue proliferation of the blood vessels caused by the existence of the bracket is avoided. Meanwhile, as the bracket has the protruding unit structure and the protruding unit part can deform, the bracket can avoid straight bending at the bending part of the blood vessel wall, and the problem of fracture resistance of the intravascular bracket in the prior art is solved.

Drawings

FIG. 1 is a schematic view showing the bump holder structure of embodiment 1 of the present invention;

FIG. 2 is a schematic view of a bump stent of an embodiment of the present invention after implantation into a blood vessel;

FIG. 3 is a schematic view showing the compression of the elastic bump units after the bump stent is implanted in a blood vessel according to the embodiment of the present invention;

FIG. 4 is a schematic diagram showing bending of the elastic bump units after the bump stent is implanted into a blood vessel according to an embodiment of the present invention;

FIG. 5 is a schematic view showing the bump holder structure of embodiment 3 of the present invention;

wherein, 1-scaffold ring units; 2-bump units.

Detailed Description

The following detailed description of the embodiments of the present application is provided in further detail, and it is apparent that the described embodiments are only some, but not all, examples of the present application. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

The terms first, second, and the like in the description and in the claims, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.

It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Example 1

Fig. 1 shows a schematic view of a bump support structure in embodiment 1 of the present invention, wherein two ends of a bump support are open, the bump support comprises five support ring units 1 and four elastic protruding units 2, the five support ring units 1 are distributed at intervals along the length direction of the support, and the elastic protruding units 2 are connected between two adjacent support ring units 1. In this embodiment, the elastic protruding units 2 are uniformly arranged along the circumferential direction of the support ring unit 1, the elastic protruding units 2 are formed into a parallelogram structure by two wires, and developing marks are arranged on the wires. The single screw rod width or the wire diameter of the elastic bulge unit 2 is 0.03mm-0.1mm, and the elastic bulge unit 2 can be sunken towards the inside of the bracket or protruded towards the outside of the bracket along with the vascular state and deformed along with the contraction or the expansion of the blood vessel.

Fig. 2 is a schematic diagram showing the embodiment of the present invention after the bump stent is implanted into a blood vessel, and fig. 3 is a schematic diagram showing the compression of the elastic bump units after the bump stent is implanted into a blood vessel. When the blood vessel is in a contracted or relaxed state, the elastic bulge unit 2 bulges outside the convex point bracket, and the bulge height is not more than 1mm higher than the bracket ring unit 1. Fig. 4 shows a bending schematic diagram of an elastic protruding unit after a bump stent is implanted into a blood vessel in an embodiment of the present invention, when the bump stent is implanted into the blood vessel in a bending state, the elastic protruding unit 2 of the bump stent is close to an inner bending position of the blood vessel bending along with the bending state of the bump stent, the elastic protruding unit 2 is recessed into the stent, and the recess degree is not more than 1mm compared with the recess degree of the stent ring unit 1. The elastic bulge unit 2 is deformed according to the vasoconstriction and diastole state away from the blood vessel bending part, namely the outer bending part of the blood vessel bending part, and in the state shown in fig. 4, the elastic bulge unit 2 is in a state of bulge towards the outside of the bump bracket, and the height of the bulge part is not more than 1mm higher than that of the bracket ring unit 1. Preferably, when the blood vessel is in a bending state, after the bump support is implanted into the blood vessel, the elastic bulge unit 2 of the bump support generates adaptive deformation according to the bending state of the blood vessel, the elastic bulge unit 2 of the bump support is close to the bending position of the blood vessel and is sunken towards the inside of the support, and the elastic bulge unit 2 far away from the bending position of the blood vessel can also be sunken towards the inside of the bump support. The protruding angle of the elastic protruding unit 2 and the bump support axial included angle are 5-90 degrees, and the highest position of the elastic protruding unit 2 is of a smooth arc-shaped structure.

The bump support is provided with the elastic bump unit 2 structure, so that the radial supporting force is increased, the supporting performance of the blood vessel is guaranteed, the whole diameter of the bump support is not required to be increased, and the elastic bump unit 2 structure can generate relative deformation, so that the friction force and shearing force of bumps on the blood vessel during the vasoconstriction and diastole are reduced, the damage to the blood vessel is reduced, and the granulation tissue proliferation of the blood vessel caused by the existence of the bump support is avoided. Meanwhile, as the bump support is provided with the elastic bulge unit 2 structure, the part of the elastic bulge unit 2 can deform, so that the bump support can avoid linear bending at the bending part of the blood vessel wall, and the problem of fracture resistance of the intravascular support in the prior art is solved.

In the present embodiment, the metal coverage of the elastic bump units 2 is smaller than that of the stent ring units 1, and preferably, the metal coverage of the elastic bump units 2 is equal to that of the stent ring units 1. The maximum outer diameter of the elastic bulge unit 2 in the bulge state is 0.1 mm-1 mm larger than the outer diameter of the stent ring unit 1, and the bulge height of the elastic bulge unit 2 deforms along with the contraction or the relaxation of blood vessels. The maximum outer diameter of the stent ring unit 1 is equal to or larger than the inner diameter of the blood vessel.

Example 2

The utility model provides a bump support, both ends are the opening form, including two support ring units 1 and an elastic bulge unit 2, connect by elastic bulge unit 2 between two support ring units 1, in this embodiment elastic bulge unit 2 is followed the circumferencial direction of support ring unit 1 evenly sets up, and elastic bulge unit 2 comprises single silk and is spiral line structure, sets up the development mark on the silk.

Example 3

Fig. 5 shows a schematic view of a bump support structure in embodiment 3 of the present invention, where two ends of the bump support are open, and the bump support includes four support ring units 1 and three elastic bump units 2, and every two adjacent support ring units 1 are connected by the elastic bump units 2, in this embodiment, the elastic bump units 2 are uniformly arranged along the circumferential direction of the support ring units 1, the elastic bump units 2 are formed by a plurality of filaments and have a smooth polygonal structure, and developing marks are arranged on the filaments.

Preferably, the bump support provided by the invention has two open ends, and comprises at least two support ring units 1 and at least one elastic bulge unit 2, wherein the support ring units 1 are distributed at intervals along the length direction of the support, the elastic bulge units 2 are connected between two adjacent support ring units 1, the width or wire diameter of a single screw rod of each elastic bulge unit 2 is 0.03-0.1 mm, the elastic bulge units 2 can be concave and/or convex inwards, and the metal coverage rate of the elastic bulge units 2 is smaller than or equal to that of the support ring units 1. The elastic bulge unit 2 can be composed of a single wire or a plurality of wires, is in a spiral line or smooth polygonal structure, and is provided with a developing mark. The protruding angle of the elastic protruding unit 2 and the axial included angle of the support are 5-90 degrees, and the top end of the elastic protruding unit 2 is of a smooth arc-shaped structure.

The bump support solves the problem of fracture resistance of the intravascular support in the prior art, ensures the support performance of the support on the blood vessel, and reduces the damage of the support on the blood vessel.

It should be understood that the foregoing examples of the present invention are provided merely for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention, and that various other changes and modifications may be made therein by one skilled in the art without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims

1. The utility model provides a bump support, both ends are the opening form, its characterized in that includes two at least support ring unit and at least one elastic bulge unit, support ring unit is along support length direction interval distribution, and two adjacent support ring unit is passed through between the elastic bulge unit connect, the pole width or the wire diameter of the single silk of elastic bulge unit are 0.03mm-0.1mm, the elastic bulge unit can indent and/or evagination, the metal coverage of the elastic bulge unit is less than or equal to the metal coverage of support ring unit.

2. The bump holder of claim 1, wherein the elastic bump units are uniformly arranged along the circumferential direction of the holder ring unit in a spiral line or a rounded polygonal structure.

3. The bump holder of claim 1, wherein the maximum outer diameter of the elastic bump unit is 0.1mm to 1mm larger than the outer diameter of the holder ring unit.

4. The bump holder of claim 1, wherein the outer diameter of the holder ring unit is greater than or equal to the inner diameter of the vessel.

5. The bump holder of claim 1, wherein the elastic bump units are adapted to deform in response to vasoconstriction or dilation.

6. The bump support of claim 1, wherein the elastic bump units bump out of the bump support when the blood vessel is in a contracted or relaxed state, the bump height being not more than 1mm.

7. The bump holder of claim 1, wherein the elastic bump units are recessed inward of the bump holder near the bent portion of the blood vessel when the blood vessel is in the bent state, and the recess depth is not more than 1mm.

8. The bump support of claim 1, wherein the elastic bump unit is composed of a single wire or a plurality of wires, and a developing mark is provided on the wires.

9. The bump holder of claim 8, wherein the bump angle of the elastic bump unit is 5 ° to 90 ° with respect to the bump holder axial direction.

10. The bump holder of claim 1, wherein the top end of the elastic bump unit has a smooth arc structure.