CN214907528U

CN214907528U - Combined positioning support

Info

Publication number: CN214907528U
Application number: CN202022567865.XU
Authority: CN
Inventors: 木合塔尔·克力木; 吴闯; 杨航
Original assignee: Xinjiang University
Current assignee: Xinjiang University
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-11-30
Anticipated expiration: 2030-11-09

Abstract

The utility model discloses a combination formula locating support, including main support and side position support, belong to medical vascular support technical field, wherein aneurysm bearing structure presents lotus flower form, flows into the existing effect of blockking of aneurysm and can reduce the impact of torrent in the tumour to the aneurysm wall again to blood, and support major structure directly links to each other with aneurysm bearing structure, and the point of developing distributes on support major structure lateral wall and aneurysm bearing structure top, compares with prior art, the utility model discloses better solution lead to near the unable normal circulation of bifurcation blood to the continuous slip of support, can not increase the operation degree of difficulty of the current implantation technique of vascular support moreover.

Description

Combined positioning support

Technical Field

The utility model relates to the field of medical equipment, a modular locating support.

Background

Intracranial aneurysm is a common disease in arterial system, and most of the diseases occur at the bifurcation of arterial blood vessel, and the continuous impact of blood can lead to the continuous increase of aneurysm, and the elasticity performance of blood vessel wall declines, finally leads to the rupture of aneurysm, and the rupture of aneurysm is very dangerous, can threaten life even, consequently adopts multiple method to treat aneurysm to patient's doctor. At present, two methods of surgical clamping and endovascular interventional therapy are mainly adopted for intracranial aneurysm treatment, the first method is clamping and closing operation on the aneurysm, the method has good treatment effect and can fundamentally treat the aneurysm, but the craniotomy has high requirements on doctors and has high risk. In the second method, the blood flowing into the aneurysm can be reduced by implanting the blood vessel stent at the position of the aneurysm and matching with the spring ring for use, finally, the aneurysm is insufficient in nutrient supply and gradually dies, but aiming at the problem that the stent is implanted into the aneurysm, thrombus is easily damaged to the blood vessel wall, a thrombus-resisting medicine needs to be taken for a long time to avoid the stenosis of the blood vessel, the flexibility and the viscoelasticity of the blood vessel are very high, and the slipping phenomenon of the stent in the blood vessel is easily caused.

Disclosure of Invention

The utility model discloses can not be fixed in the blood vessel to the aneurysm support, the blood vessel has higher compliance, and the support can take place to slide in the blood vessel in the blood flow process, hinders branch's blood vessel, makes its blood supply not enough to and aneurysm bearing structure can reduce the impact of blood to the aneurysm wall, thereby reduces the ruptured risk of aneurysm.

The utility model aims at providing a positioning bracket which aims to overcome the problem that the bracket slides in a blood vessel.

The purpose of the utility model can be realized by the following technical scheme.

The combination formula locating support includes: a main bracket and a side bracket. The main stent comprises a stent main body structure and an aneurysm supporting structure, developing points of the main stent are distributed on the side wall and the top end, and developing points of the side stent are distributed on the side wall.

The main body of the bracket and the bracket at the side position are both self-expansion type net structures.

The aneurysm support structure is lotus-shaped.

The main support and the side position support are connected through an I-shaped structure.

The combined positioning is mainly a weaving structure formed by sinusoidal curves, has better radial supporting force, has good supporting performance after the stent is released, is formed by cutting or 3D printing for a main body structure in a main stent, is formed by 3D printing or cutting for an aneurysm supporting structure, and is formed by cutting or 3D printing for a side position stent.

The flaring angle of the aneurysm support structure is 30-135 degrees to match aneurysms of different angles, and the bottom of the aneurysm support structure is provided with a 2mm round hole for reducing blood flow to the aneurysm and preventing the spring ring from being exposed. Thereby achieving the purpose of blocking the aneurysm, reducing the blood flowing into the aneurysm to form vortex to impact the aneurysm wall.

The developing points are spirally distributed on the periphery of the main stent and the top end of the aneurysm supporting structure, and the position and the state of the combined positioning stent can be seen through DSA in the implantation process.

The intravascular stent can be made of metal, such as stainless steel, nickel-titanium alloy, magnesium-based alloy, iron-based alloy and the like, or can be non-metal, such as polylactic acid and the like, and can be a bare stent, or a drug-coated intravascular stent or a degradable intravascular stent.

The utility model discloses a use: firstly releasing the main support, implanting the lotus-shaped support structure at the top end of the main support into an aneurysm cavity, aligning the hole positions at two sides with branch blood vessels, then respectively releasing the side position supports at two sides, assembling the side position supports with the main support by using an I-shaped structure, finally releasing a spring ring by using a micro guide rod through a round hole push rod at the bottom of the plugging part and a micro catheter, filling the aneurysm cavity with the spring ring, withdrawing the push rod and the micro catheter, and completing the implantation of the support.

The utility model discloses a cooperation such as stent implantation and little seal wire, little pipe, push rod is the known prior art of technical staff in this field.

Compared with the prior art, the utility model has the advantages of it is following:

(1) the stent support portion extends into the aneurysm to support the aneurysm wall, such that reduced internal blood flow impacts the aneurysm wall and reduces the risk of aneurysm rupture;

(2) the stent is directly connected with the aneurysm supporting part and is blocked from the aneurysm, so that blood can directly and transversely flow;

(3) the top end and the side edge of the stent are both provided with developing metal, so that the shape of the stent and the position of the stent in a blood vessel can be better seen in the implantation process;

(4) the side position stents arranged at the two sides of the stent are positioned, so that the stent can not slide in the blood vessel to block the blood supply insufficiency of the branch blood vessel;

drawings

Figure 1 is a structural diagram of the present invention before the stent is released.

Fig. 2 is a side view of the bracket of the present invention.

Fig. 3 is a schematic view of the treatment process of the present invention for treating an aneurysm at a bifurcation.

Figure 4 is a structural diagram of the bracket of the present invention after release.

In the figure, 1-stent main body structure, 2-aneurysm supporting structure, 3-side position stent, 4-development wire and development point, 5-spring ring, 6-aneurysm, 7-microcatheter, 8-micro guide wire and 9-push rod.

Detailed Description

The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

Combined type positioning support, its structure is as shown in fig. 1, support major structure 1 and aneurysm bearing structure 2, side position support 3, support major structure 1 all adopts from inflation formula establishment structure with side position support 3, top aneurysm bearing structure 2, the porose network structure of department that links to each other with the main support in aneurysm bearing structure bottom, the primary function reduces blood inflow aneurysm, and prevent that the spring coil of implanting from spilling in the aneurysm, aneurysm bearing structure laminating aneurysm wall also can reduce the impact of blood to the aneurysm wall, reduce the risk of aneurysm rupture.

The stent main body 1 and the side stent 3 both adopt a braided structure, and the materials are titanium-chromium-nickel alloy or stainless steel, nickel-titanium alloy, magnesium-based alloy, iron-based alloy and the like, and can also be non-metals such as polylactic acid and the like. The aneurysm support structure is formed by cutting, and the material of the aneurysm support structure is preferably polylactic acid degradable material. The stent adopts a spiral positioning wire in the lateral direction to ensure that the specific position and state of the stent can be observed through DSA in the implantation process.

The utility model discloses with little seal wire, little pipe, push rod, spring coil, the cooperation is used, is the known prior art of technical staff in the field. The stent implantation process is as shown in fig. 3 (a) to (e), firstly guiding a micro-catheter 7 to the aneurysm cavity through a micro-guide wire 8, then withdrawing the micro-guide wire 8 to send the stent to the part shown in fig. 3 (a) through the micro-catheter 7 and slowly withdrawing the micro-catheter 7 and releasing the main stent to a proper position, as shown in fig. 3 (b), then guiding the micro-catheter to the blood vessels on both sides through the micro-guide wire 8 respectively and then withdrawing the micro-guide wire 8, respectively releasing the stents on both sides as shown in fig. 3 (c), respectively combining the stents 3 on both sides with the stent main body structure 1 through development observation, and finally guiding the micro-catheter 7 through the micro-guide wire 8 to the part shown in fig. 3 (d). The micro guide wire is slowly withdrawn, and the spring ring 7 is sent into the aneurysm cavity at the bifurcation through the pushing rod and the meshes at the bottom of the plugging part 2. Finally, the implantation and embolization of the stent are completed as shown in fig. 3 (e).

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.

Claims

1. Combination formula locating support, its characterized in that has the locate function in blood vessel bifurcation department, can prevent that the main support from reciprocating to and side position support from appearing and controlling and slide, in combination formula locating support, the main support includes support major structure and aneurysm bearing structure, and wherein aneurysm bearing structure is lotus flower shape, has the supporting role to the aneurysm, and combination formula locating support uses netted structure of weaving to give first place to, and be equipped with the development point on the support.

2. The combined positioning bracket of claim 1, wherein the side positioning bracket and the main bracket are connected by an I-shaped structure.

3. The modular positioning stent of claim 1, wherein the modular positioning stent material is a metal or a non-metal, and the modular positioning stent is a bare stent or a drug-coated or degradable stent.

4. The modular positioning frame of claim 1, wherein the modular positioning frame is a woven structure consisting essentially of sinusoidal curves.

5. The modular positioning stent of claim 1, wherein the mesh structure of the stent is cut or 3D printed.

6. The modular positioning frame of claim 1, wherein the top of the main frame is lotus-shaped with a flaring angle of between 30 and 135 degrees and the bottom of the support section is provided with a 2mm perforated barrier net.

7. The modular positioning stent of claim 1, wherein the visualization sites are distributed around the stent, and when the stent is released, the visualization sites on the stent can be observed by DSA technology to determine the position state of the stent in the blood vessel.