阅读说明：本技术 一种血管分叉部位的覆膜血流导向系统 (Tectorial membrane blood flow guide system at blood vessel bifurcation position ) 是由 刘爱华 佟鑫 冯欣 陈吉钢 韩明阳 纪林金 于 2021-06-23 设计创作，主要内容包括：本发明公开了一种血管分叉部位的覆膜血流导向系统,包括血管支架、覆膜结构和用于撑开血管支架的撑开结构,所述覆膜结构为一体成型的空腔结构,覆膜结构包括分支覆膜管和交汇管,血管支架位于覆膜结构的内部,血管支架分布于分支覆膜管,覆膜结构与血管支架固定连接；撑开结构与血管支架配合使用。本发明中的血管支架分布在分支覆膜管,因交汇管具有柔软性,可以随血管的走向弯曲。(The invention discloses a tectorial membrane blood flow guiding system of a blood vessel bifurcation part, which comprises a blood vessel support, a tectorial membrane structure and a strutting structure for strutting the blood vessel support, wherein the tectorial membrane structure is an integrally formed cavity structure and comprises branch tectorial membrane tubes and junction tubes; the distraction structure is matched with the intravascular stent for use. The blood vessel stent is distributed on the branch tectorial membrane tubes, and the intersection tube has flexibility and can be bent along with the trend of the blood vessel.)

1. A tectorial membrane blood flow guide system of the bifurcation part of the blood vessel, it includes the vascular support, tectorial membrane structure and is used for opening the structure of opening of the vascular support, characterized by that, the said tectorial membrane structure is the cavity structure of integrated into one piece, the tectorial membrane structure includes branched tectorial membrane tube and junction tube, the vascular support locates in the inside of tectorial membrane structure, the vascular support distributes in the branched tectorial membrane tube, tectorial membrane structure and vascular support fixed connection; the distraction structure is matched with the intravascular stent for use.

2. The system of claim 1, wherein the cover structure is made of a biocompatible material.

3. The system of claim 2, wherein the branch coated tubes and the junction tubes are cylindrical tubes.

4. The system of claim 3, wherein the graft structure includes an anti-inflammatory layer disposed on an outer surface of the graft structure.

5. The system of claim 4, wherein the stent is a cylindrical stent.

6. The system of claim 5, wherein the main body of the stent is formed of a parallelogram frame.

7. A system according to any one of claims 1 to 6, wherein a graft structure is provided for different bifurcated vessels, each branch comprising a stent graft.

8. The system of claim 7, wherein the expandable structure comprises a guide tube and an expandable balloon, the expandable balloon is disposed at a distal end of the guide tube, and the expandable balloon is in communication with the guide tube.

9. The system of claim 8, wherein the guide tube is a cylindrical tube, the distal end of the guide tube is closed, and the proximal end of the guide tube comprises an inflation port.

10. A system as claimed in claim 8, wherein the guide tube comprises two dilation balloons, one of which corresponds to the position of the stent in the branch tube and the other of which corresponds to the position of the stent in the adjacent branch tube.

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a tectorial blood flow guiding system for a blood vessel bifurcation part.

Background

Aneurysms, which are the manifestations of localized or diffuse dilatation or bulging of the arterial wall due to lesions or lesions of the arterial wall, can occur in any part of the arterial system, mainly represented by distending or pulsating masses, and are more common in the trunk arteries, aorta and carotid arteries of limbs. According to different positions of aneurysm, the aneurysm can be divided into peripheral aneurysm, abdominal aortic aneurysm, thoracoabdominal aortic aneurysm, aortic dissection aneurysm, visceral aneurysm and the like, and is mainly characterized by body surface pulsatile mass, severe pain when the aneurysm presses peripheral nerves or breaks, limb ischemia or organ necrosis caused by distal arterial embolism due to thrombus or plaque shedding in a tumor cavity, and the like.

Aneurysm interventional therapy refers to vascular interventional therapy, which is a measure for various treatments by using catheter technology based on diagnostic angiography under X-ray monitoring. Aneurysms vary in treatment from site to site. Mainly comprises surgical treatment, aneurysm intraluminal repair and aneurysm embolization. The operation principle includes aneurysm excision and artery reconstruction. The reconstruction method comprises the steps of repairing the broken opening of the artery, restraining the arterial patch, performing arterial end anastomosis and the like. The endovascular repair adopts a tectorial artificial endovascular stent to carry out aneurysm endovascular repair, has small wound and definite curative effect, but must be strictly mastered to have good indications.

The bifurcation part aneurysm is a difficult point of interventional therapy, the special blood flow guiding system applied to the bifurcation part is few at present, the double-stent therapy is mostly applied, the operation of the double-stent therapy is complex, the stent structure needs to be damaged in some operations, and the stent is hard and cannot adapt to the vascular structures in various directions.

The invention aims at the problems and provides a tectorial blood flow guiding system for a blood vessel bifurcation part.

Disclosure of Invention

In order to overcome the problems in the background art, the invention adopts the following technical scheme:

a tectorial membrane blood flow guide system of a blood vessel bifurcation part comprises a blood vessel support, a tectorial membrane structure and a strutting structure for strutting the blood vessel support, wherein the tectorial membrane structure is an integrally formed cavity structure and comprises branch tectorial membrane tubes and junction tubes; the distraction structure is matched with the intravascular stent for use. The blood vessel stent is distributed on the branch tectorial membrane tubes, and the intersection tube has flexibility and can be bent along with the trend of the blood vessel.

Furthermore, the film covering structure is made of a biocompatible material. The film covering structure has good compatibility with human body.

Furthermore, the main bodies of the branch film-coated pipe and the intersection pipe are cylindrical pipes. The branch tectorial membrane tube and the junction tube in the shape conform to the shape of blood vessel.

Further, the film covering structure comprises an anti-inflammatory layer, and the anti-inflammatory layer is arranged on the outer surface of the film covering structure. After the aneurysm is removed, the anti-inflammatory layer can play a role in diminishing inflammation and preventing infection on a wound surface.

Further, the anti-inflammatory layer is an anti-inflammatory layer composed of anti-inflammatory drugs.

Further, the blood vessel support is a cylindrical tubular support. The vascular stent in the shape is consistent with the blood vessel and the film covering tube.

Further, the main body of the vascular stent is composed of a parallelogram frame. The parallelogram has the capability of deformation, the intravascular stent has good deformation force, is in a contraction state when being placed in a blood vessel, and can be unfolded after reaching a proper position.

Further, the length of the blood vessel stent is less than that of the tectorial membrane tube.

Further, a stent graft structure for different branched blood vessels is provided, and each branched stent graft comprises a blood vessel stent graft. In actual production, the matched film covering structure and the blood vessel stent are arranged according to the branch number and the blood vessel size of the human body bifurcation blood vessel.

Further, the opening structure comprises a guide tube and an opening balloon, the opening balloon is arranged at the far end of the guide tube, and the opening balloon is communicated with the guide tube. When the blood vessel stent is used, the opening saccule is opened by injecting gas into the guide pipe, the air is pumped out to deflate the opening saccule, the blood vessel stent is sleeved outside the opening saccule, the blood vessel stent is in a contraction state, and the blood vessel stent is opened by the opening saccule at a proper position of a blood vessel.

Furthermore, the guide tube is a cylindrical hose, the far end of the guide tube is a closed end, and the near end of the guide tube comprises an inflation inlet. When in use, the inflation inlet is connected with the injector, and the guide tube is inflated or exhausted outwards through the injector.

Further, the proximal end of the guide tube also comprises a sealing plug, and the sealing plug is inserted into the inflation opening. The air tightness of the guide pipe after inflation is ensured.

Furthermore, the guide tube comprises two expansion balloons, wherein the position of one expansion balloon corresponds to the position of the blood vessel stent in the branch tectorial membrane tube, and the position of the other expansion balloon corresponds to the position of the blood vessel stent in the adjacent branch tectorial membrane tube. When the stent is used, gas is injected into the guide pipe, so that the two vascular stents can be simultaneously propped open, and the stent is quick and efficient.

The invention has the beneficial effects that: the tectorial membrane structure is soft structure, and vascular support only sets up at branch tectorial membrane pipe, has kept the compliance of intersection pipe, consequently under the guide of stand pipe, can send vascular support into the branching blood vessel to strut in suitable position, and can not harm the blood vessel, protected the integrality of blood vessel.

The use method of the invention comprises the following steps: firstly, selecting a proper film-coated blood flow guide system at a blood vessel bifurcation part according to the diameter of a branch of a blood vessel and the diameter of the blood vessel, then sleeving a film-coated structure on a guide tube, placing the branch film-coated tube and a blood vessel stent into proper positions under the guide of the guide tube, adjusting the position of the guide tube to enable a propping balloon to correspond to the position of the blood vessel stent, splicing an injector with an inflation inlet at the near end of the guide tube, injecting gas into the guide tube to enable the propping balloon to be inflated by the gas, propping the blood vessel stent by the inflated propping balloon, then adjusting the position of the propping balloon, and propping the blood vessel stent one by one.

Drawings

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

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

FIG. 3 is a schematic structural view of the intravascular stent and the guiding tube of the present invention;

FIG. 4 is a perspective view of a stent and guide tube according to the present invention;

FIG. 5 is an enlarged elevational view of the distraction balloon and the vascular stent of the present invention;

FIG. 6 is an enlarged schematic view of the distraction balloon and the vascular stent of the present invention;

FIG. 7 is an enlarged schematic view of the inflation port and sealing plug of the guide tube of the present invention;

FIG. 8 is a schematic view of the present invention with a guide tube for the dilation balloon;

FIG. 9 is a schematic structural view of the vascular stent and guide tube with two distraction balloons according to the present invention;

FIG. 10 is a schematic view of the structure of two guide tubes for the distraction balloon of the present invention;

FIG. 11 is a schematic view of the overall structure of the present invention for a bifurcated vessel;

FIG. 12 is a schematic perspective view of a bifurcated vessel in accordance with the present invention;

in the figure, 1, a film structure; 11. branch film-coated pipes; 12. an intersection pipe; 13. a vascular stent; 2. a guide tube; 21. opening the balloon; 22. an inflation inlet; 23. and (4) sealing the plug.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below by specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and other advantages and effects of the present invention can be easily understood by those skilled in the art from the disclosure of the present specification. The present invention can be implemented or applied by other different specific embodiments, and the features in the following embodiments and embodiments can be combined with each other without conflict, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

The proximal end of the present invention is the end near the operator, and the distal end is the end far from the operator.

Example 1

As shown in fig. 1-2, the system for guiding a blood flow through a coated membrane at a bifurcation of a blood vessel in this embodiment includes a blood vessel support 13, a coated membrane structure 1 and a spreading structure for spreading the blood vessel support 13, where the coated membrane structure 1 is an integrally formed cavity structure, the coated membrane structure 1 includes a branch coated tube 11 and a junction tube 12, the blood vessel support 13 is located inside the coated membrane structure 1, the blood vessel support 13 is distributed in the branch coated tube 11, and the coated membrane structure 1 is fixedly connected to the blood vessel support 13; the stent structure is used in conjunction with a vascular stent 13. The blood vessel stent 13 is distributed on the branch tectorial membrane tube 11, and the intersection tube 12 has flexibility and can be bent along with the trend of the blood vessel.

The main bodies of the branch coated pipes 11 and the junction pipes 12 are cylindrical pipes. The branch coated tube 11 and the junction tube 12 of this shape conform to the shape of a blood vessel.

The blood vessel stent 13 is a cylindrical stent. The vascular stent 13 of this shape conforms to the blood vessel and the graft tubing.

As shown in the figure, the blood vessel stent 13 in the present embodiment is wrapped by the branch covering film tube 11, and the blood vessel stent 13 is expanded by the expanding structure, so that the blood vessel stent 13 supports the blood vessel.

Example 2

As shown in fig. 3 to 8, the present embodiment specifically sets the blood vessel stent 13 and the stent structure on the basis of embodiment 1:

the film structure 1 is made of biocompatible material. The film covering structure 1 arranged in the way has good compatibility with human bodies.

The film structure 1 includes an anti-inflammatory layer disposed on an outer surface of the film structure 1. After the aneurysm is removed, the anti-inflammatory layer can play a role in diminishing inflammation and preventing infection on a wound surface.

The anti-inflammatory layer is made of anti-inflammatory drugs.

The main body of the stent 13 is constituted by a parallelogram frame. The parallelogram has the capability of deformation, the intravascular stent 13 with the arrangement has good deformation force, the intravascular stent 13 is in a contraction state when being placed in a blood vessel, and the intravascular stent 13 can be propped open after reaching a proper position.

The length of the stent 13 is smaller than that of the coated tube.

The distraction structure comprises a guide tube 2 and a distraction balloon 21, the distraction balloon 21 is arranged at the far end of the guide tube 2, and the distraction balloon 21 is communicated with the guide tube 2. When the blood vessel stent is used, the distraction balloon 21 is distracted by injecting gas into the guide tube 2, the gas is pumped out to deflate the distraction balloon 21, the blood vessel stent 13 is sleeved on the outer side of the distraction balloon 21, the blood vessel stent 13 is in a contraction state at the moment, and the blood vessel stent 13 is distracted by the distraction balloon 21 at a proper position of a blood vessel.

The guide tube 2 is a cylindrical hose, the distal end of the guide tube 2 is a closed end, and the proximal end of the guide tube 2 includes an inflation port 22. When in use, the inflation port 22 is connected with an injector, and the guide tube 2 is inflated or exhausted outwards through the injector.

The proximal end of the guide tube 2 further comprises a sealing plug 23, the sealing plug 23 being inserted into the inflation port 22. The tightness of the guide tube 2 after inflation is ensured, and the gas which expands the inside of the saccule 21 after the sealing plug 23 is taken down can overflow the outside of the body of the patient through the guide tube 2.

As shown in the figure, the present embodiment can be used for treatment of a bifurcated blood vessel, in the present embodiment, the position of the guide tube 2 is adjusted to enable the position of the expansion balloon 21 to correspond to the position of the blood vessel stent 13, and the expansion balloon 21 expands the blood vessel stent 13 in the filling state, so that the blood vessel stent 13 plays a role in supporting a blood vessel in the blood vessel.

Example 3

As shown in fig. 9 to 10, the present embodiment is different from embodiment 2 in that: the guide tube 2 comprises two expansion balloons 21, wherein the position of one expansion balloon 21 corresponds to the position of the blood vessel stent 13 in the branch coated tube 11, and the position of the other expansion balloon 21 corresponds to the position of the blood vessel stent 13 in the adjacent branch coated tube 11. When the blood vessel stent is used, the gas is injected into the guide pipe 2, so that the two blood vessel stents 13 can be simultaneously expanded, and the blood vessel stent is quick and efficient.

The guide tube 2 in the embodiment can simultaneously strut two blood vessel stents 13, and particularly can rapidly and efficiently complete the operation of strutting the blood vessel stents 13 when being used for multi-bifurcation blood vessels, thereby saving the operation time.

Example 4

As shown in fig. 11 to 12, the present embodiment is based on the above-described embodiments: the stent graft structure 1 for different bifurcated blood vessels is provided, and each branch stent graft 11 includes a blood vessel stent 13 therein. In actual production, the matched film covering structure 1 and the blood vessel support 13 are arranged according to the branch number and the blood vessel size of the human body bifurcation blood vessel, and the film covering blood flow guiding systems of the blood vessel bifurcation parts with different specifications are produced, are suitable for different bifurcation blood vessels, meet various clinical requirements, provide better treatment for patients, protect the blood vessels of the patients and have good effect after healing. The coated blood flow directing system of the blood vessel bifurcation site shown in the drawings can be used for the treatment of double bifurcated vessels, although the drawings are only given as an example for explanation and are not to be construed as limiting the invention.

The above description of the embodiments is only for the understanding of the present invention. It should be noted that modifications could be made to the invention without departing from the principle of the invention, which would also fall within the scope of the claims of the invention.