CN210447292U - Degradable intravascular stent with good resilience - Google Patents

Abstract

The utility model discloses a good degradable blood vessel support of resilience, including support subject and support unit, the lateral surface of support subject is provided with the coating, support unit installs in support subject's inside, and support unit's the left and right sides all is connected with first gag lever post, support unit's upper and lower both sides all are connected with the second gag lever post, and the outside of second gag lever post is connected with solid fixed ring, gu fixed ring's tail end installs flexible pole, and support unit's inboard is provided with the cavity, support subject's internally mounted has first gag lever post, and support subject's internally mounted has the second gag lever post, support subject's inboard is provided with the cavity. The device is provided with the elastic rod, when needs use vascular support, through inside extrusion support main part for the elastic rod is stretched and is produced elastic potential energy, and in putting into the blood vessel, the elastic potential energy of elastic rod makes the elastic rod retract, thereby makes the support main part open, makes the resilience increase of support main part.

Description

Degradable intravascular stent with good resilience

Technical Field

The utility model relates to a medical apparatus technical field specifically is a degradable vascular support that resilience is good.

Background

The blood vessel refers to a series of pipelines through which blood flows, except cornea, hair, nails, dentin, epithelium and the like, the blood vessel is distributed over the whole body of a human body, the blood vessel is divided into three types of artery, vein and capillary vessel according to different structural functions, the intravascular stent refers to the purpose that an internal stent is placed in a lesion section on the basis of the expansion and forming of a lumen saccule so as to support the blood vessel of a stenotic occlusion section, reduce the elastic retraction and the reshaping of the blood vessel and keep the blood flow of the lumen unobstructed, and part of the internal stent also has the function of preventing restenosis and is mainly divided into a coronary stent, a cerebrovascular stent, a renal artery stent, a aortic stent and the like.

The vascular stent on the market is in the use, only relies on the resilience of vascular stent self to kick-back the device, and the resilience is not good, and the problem that horizontal and vertical not carry out the restriction of support element for this reason, we propose a better vascular stent of practicality.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a degradable vascular support that resilience is good to solve the vascular support that proposes in the above-mentioned background art in the use, only rely on the resilience of vascular support self to kick-back the device, the resilience is not good, the horizontal and vertical problem of not carrying out the restriction of support element.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a good degradable blood vessel support of resilience, includes support subject and support unit, the lateral surface of support subject is provided with the coating, the support unit is installed in the inside of support subject, and the left and right sides of support unit all is connected with first gag lever post, the upper and lower both sides of support unit all are connected with the second gag lever post, and the outside of second gag lever post is connected with solid fixed ring, gu fixed ring's tail end installs flexible pole, and the inboard of support unit is provided with the cavity, the internally mounted of support subject has first gag lever post, and the internally mounted of support subject has the second gag lever post, the inboard of support subject is provided with the cavity, the inboard of elastic pole is provided with the cavity.

Preferably, the coating is uniformly distributed along the outer side of the stent body, and the coating and the stent body are both made of PHA.

Preferably, the support units are uniformly distributed along the interior of the support main body, and the support units are of a diamond structure.

Preferably, first limit buckle has all been cup jointed at both ends about the support unit, and first limit buckle is symmetrical about the axis position of support unit, first gag lever post constitutes the block structure through between first limit buckle and the support unit.

Preferably, the upper end and the lower end of the support unit are respectively sleeved with a second limit buckle, the second limit buckles are symmetrical about the central axis of the support unit, and the second limit rod is clamped with the support unit through the second limit buckles.

Preferably, the fixing rings are uniformly distributed along the transverse direction of the elastic rod, and the fixing rings are elastically connected with the elastic rod.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the device is provided with the coating, and the coating and the stent main body are made of degradable materials, so that when the device is used, the whole device can be degraded under the catalysis of the medicine, the intravascular stent does not need to be taken out by a secondary operation, and the pain of a patient is reduced;

2. the support unit is provided with a diamond-shaped support unit, has certain elasticity, and when the support unit is used, the cross section specification of the support main body is reduced by inwards compressing the support unit, so that the support main body is conveniently placed in a blood vessel of a patient, and the cross section specification of the support main body is increased under the elastic potential energy of the support unit, so that the blood vessel is propped open by the support main body; the first limiting buckle and the first limiting rod are arranged, the first limiting rod is used for transversely connecting the two support units through the first limiting buckle, and the transverse position of the support units can be limited due to the fixed length of the first limiting rod;

3. the two support units are longitudinally connected through the second limiting buckles at the two ends of the second limiting rod, and the longitudinal positions of the two support units are limited due to the fixed length of the second limiting rod; be provided with the elastic rod, when needs use vascular support, through inside extrusion support main part for the elastic rod is stretched and is produced elastic potential energy, and in putting into the blood vessel, the elastic potential energy of elastic rod makes the elastic rod retract, thereby makes the support main part open, makes the resilience increase of support main part.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic side view of the present invention;

fig. 3 is a schematic view of the connection structure of the bracket unit of the present invention.

In the figure: 1. a stent body; 2. coating; 3. a holder unit; 4. a first limit buckle; 5. a first limit rod; 6. a second limit buckle; 7. a second limiting rod; 8. a fixing ring; 9. an elastic rod; 10. a cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a degradable intravascular stent with good resilience comprises a stent main body 1 and stent units 3, wherein a coating 2 is arranged on the outer side surface of the stent main body 1, the coating 2 is uniformly distributed along the outer side of the stent main body 1, the coating 2 and the stent main body 1 are both made of PHA (polyhydroxyalkanoate), the device is provided with the coating 2, and the coating 2 and the stent main body 1 are both made of degradable materials; the support unit 3 is arranged in the support main body 1, the left side and the right side of the support unit 3 are both connected with first limiting rods 5, the support units 3 are uniformly distributed along the inside of the support main body 1, the support units 3 are of a diamond structure and are provided with the diamond support units 3, the support units 3 have certain elasticity, when the support device is used, the support units 3 are inwards compressed, so that the section specification of the support main body 1 is reduced, the support main body 1 is conveniently placed in a blood vessel of a patient, and the section specification of the support main body 1 is increased under the elastic potential energy of the support units 3, so that the blood vessel is propped open by the support main body 1;

the left end and the right end of the bracket unit 3 are respectively sleeved with a first limiting buckle 4, the first limiting buckles 4 are symmetrical about the central axis position of the bracket unit 3, the first limiting rod 5 forms a clamping structure with the bracket unit 3 through the first limiting buckles 4, the first limiting buckles 4 and the first limiting rod 5 are arranged, the first limiting rod 5 transversely connects the two bracket units 3 through the first limiting buckles 4, and the transverse position of the bracket unit 3 can be limited due to the fixed length of the first limiting rod 5; the upper side and the lower side of the bracket unit 3 are both connected with second limiting rods 7, the outer sides of the second limiting rods 7 are connected with fixing rings 8, the upper end and the lower end of the bracket unit 3 are both sleeved with second limiting buckles 6, the second limiting buckles 6 are symmetrical about the central axis position of the bracket unit 3, the second limiting rods 7 form a clamping structure with the bracket unit 3 through the second limiting buckles 6, the second limiting buckles 6 and the second limiting rods 7 are arranged, the two bracket units 3 are longitudinally connected through the second limiting buckles 6 at the two ends of the second limiting rods 7, and the longitudinal positions of the two bracket units 3 are limited due to the fixed length of the second limiting rods 7;

the tail end of the fixing ring 8 is provided with an elastic rod 9, the inner side of the support unit 3 is provided with a cavity 10, the fixing ring 8 is uniformly distributed along the transverse direction of the elastic rod 9, the fixing ring 8 is elastically connected with the elastic rod 9, the elastic rod 9 is arranged, when the intravascular stent needs to be used, the support body 1 is inwards extruded, the elastic rod 9 is stretched to generate elastic potential energy and is placed in a blood vessel, the elastic potential energy of the elastic rod 9 enables the elastic rod 9 to retract, the support body 1 is enabled to be opened, and the resilience of the support body 1 is increased; the inside mounting of support main part 1 has first gag lever post 5, and the inside mounting of support main part 1 has second gag lever post 7, and the inboard of support main part 1 is provided with cavity 10, and the inboard of elastic rod 9 is provided with cavity 10.

The working principle is as follows: for the blood vessel stent, firstly, the coating 2 is coated on the surface of the stent main body 1, when in use, the stent main body 1 is bound inwards, the stent unit 3 is extruded inwards, the first limit rods 5 at the tail ends of the first limit buckles 4 are driven to move towards the two sides of the stent unit 3, the transverse distance between the first limit rods 5 is increased, the transverse length of the stent unit 3 is increased, the second limit rods 7 at the tail ends of the second limit buckles 6 are driven to move inwards, the longitudinal distance between the second limit rods 7 is reduced, the vertical distance between the stent unit 3 is reduced, as the transverse distance between the second limit rods 7 is increased, the second limit rods 7 drive the fixing rings 8 to move, the elastic rods 9 are stretched, the elastic potential energy of the elastic rods 9 is increased, the specification of the cavity 10 is reduced, the stent main body 1 is contracted, the stent main body 1 is placed into a blood vessel, the binding force is withdrawn, the elastic potential energy of the elastic rods 9 drives the elastic rods 9 to contract inwards, the second limiting rod 7 is pulled by the fixing ring 8 to be close to each other, the auxiliary support unit 3 is restored to the original state, the specification of the cavity 10 is increased, the support main body 1 is opened, the blood vessel is supported, the device is wholly explained under the catalysis of the medicine, and the operation is not needed to be carried out again, so that the practicability of the whole blood vessel support is well improved, and the using process of the whole blood vessel support is completed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a good degradable vascular stent of resilience, includes stent main part (1) and stent unit (3), its characterized in that: the lateral surface of support main part (1) is provided with coating (2), install in the inside of support main part (1) support unit (3), and the left and right sides of support unit (3) all is connected with first gag lever post (5), the upper and lower both sides of support unit (3) all are connected with second gag lever post (7), and the outside of second gag lever post (7) is connected with solid fixed ring (8), the tail end of solid fixed ring (8) is installed flexible pole (9), and the inboard of support unit (3) is provided with cavity (10), the internally mounted of support main part (1) has first gag lever post (5), and the internally mounted of support main part (1) has second gag lever post (7), the inboard of support main part (1) is provided with cavity (10), the inboard of flexible pole (9) is provided with cavity (10).

2. The degradable vessel stent with good resilience according to claim 1, wherein: the coating (2) is uniformly distributed along the outer side of the bracket main body (1), and the coating (2) and the bracket main body (1) are both made of PHA.

3. The degradable vessel stent with good resilience according to claim 1, wherein: the support unit (3) is uniformly distributed along the inside of the support main body (1), and the support unit (3) is of a diamond structure.

4. The degradable vessel stent with good resilience according to claim 1, wherein: first spacing knot (4) have all been cup jointed at both ends about support unit (3), and first spacing knot (4) are symmetrical about the axis position of support unit (3), constitute the block structure through first spacing knot (4) and between support unit (3) in first gag lever post (5).

5. The degradable vessel stent with good resilience according to claim 1, wherein: the upper end and the lower end of the support unit (3) are respectively sleeved with a second limiting buckle (6), the second limiting buckles (6) are symmetrical about the central axis of the support unit (3), and the second limiting rod (7) forms a clamping structure between the second limiting buckle (6) and the support unit (3).

6. The degradable vessel stent with good resilience according to claim 1, wherein: the fixing ring (8) is uniformly distributed along the transverse direction of the elastic rod (9), and the fixing ring (8) is connected with the elastic rod (9) in an elastic manner.

Images