Intracranial artery stent
The design of the splicable flexible ring stent solves the problem of insufficient flexibility of existing cerebral artery stents, and achieves stable support and flexible adaptation to cerebral arteries of different shapes, thereby enhancing the applicability and elastic support effect of the stent.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2026-03-13
AI Technical Summary
Existing cerebral artery stents lack flexibility during use and are difficult to adapt to different shapes of cerebral arteries, resulting in poor treatment outcomes.
It is constructed using a modular, flexible ring-shaped stent. The stent can be disassembled and assembled using connectors and anti-dislodgement clips. It is suitable for intracranial arteries of different shapes. The stent body is equipped with connector holes and anti-dislodgement clips to ensure a stable connection.
This improves the applicability and elastic support of the stent, enabling it to better adapt to complex cerebral artery shapes, reduce tissue damage, and enhance the stent's flexibility and stability.
Smart Images
Figure CN223987953U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of intracranial arterial stent technology, specifically to an intracranial arterial stent. Background Technology
[0002] The brain has an arterial system and a venous system. Cerebral arteries are connected by paired internal carotid and vertebral arteries to form the arterial circulation. The venous system generally does not run alongside arteries of the same name; the collected venous blood first enters the venous sinuses and then drains into the internal jugular vein. All veins lack valves. It includes both the arterial and venous systems of the brain.
[0003] The brain's blood flow is supplied by two arterial systems: the internal carotid artery system and the vertebrobasilar artery system.
[0004] Each common carotid artery branches into the external carotid artery and the internal carotid artery. The internal carotid artery has no branches in the neck, ascends vertically to the base of the skull, passes through the petrous part of the temporal bone, reaches the apex of the petrous bone via the carotid canal, enters the cranium through the foramen lacerum, penetrates the dura mater and passes through the cavernous sinus, successively branching into the ophthalmic artery, posterior communicating artery, and anterior choroidal artery. It then divides into two terminal branches on either side of the optic chiasm: the anterior cerebral artery and the middle cerebral artery. The internal carotid artery system supplies blood to the anterior three-fifths of the cerebral hemispheres, including the frontal lobe, temporal lobe, parietal lobe, and basal ganglia; hence, it is also known as the anterior circulation.
[0005] (a) The anterior choroidal artery is the internal carotid artery that divides into the anterior and middle cerebral arteries or large perforating branches originating from the proximal end of the middle cerebral artery. It first gives off some small perforating branches that supply the caudate nucleus, part of the internal capsule, and half of the cerebral peduncle and lateral geniculate body.
[0006] (II) The anterior cerebral artery, sometimes called the internal cerebral artery, originates from the internal carotid artery and runs anteriorly and medially within the orbitofrontal plane of the frontal lobe. It anastomoses with both anterior cerebral arteries via the anterior communicating artery. Its perforating branches primarily supply the hypothalamus, the anterior part of the caudate nucleus and lentiform nucleus, and the anterior limb of the internal capsule. Its cortical branches mainly supply the entire medial surface of the cerebral hemisphere anterior to the parieto-occipital fissure; the superior frontal gyrus, the upper half of the middle frontal gyrus, the upper quarter of the precentral and anterior central gyrus, and the paracentral lobule on the dorsolateral surface of the cerebral hemisphere.
[0007] (III) The middle cerebral artery is actually an external cerebral artery, a direct continuation of the internal carotid artery. After branching off, it enters the lateral fissure and gives off many small perforating branches, supplying the putamen, caudate nucleus, and the anterior 3 / 5 of the posterior branch of the internal capsule (corresponding to the passage of the pyramidal tract). These branches are called the lateral lenticulostriate arteries, which are common sites for hypertension, cerebral hemorrhage, and cerebral infarction. The main trunk of the middle cerebral artery branches off into many cortical branches that distribute to most of the lateral surface of the cerebral hemispheres.
[0008] People nowadays like to stay up late, leading to an increase in various diseases, especially lesions in the blood vessels and arteries of the brain, resulting in vascular malformations. This necessitates surgical treatment of the cerebral arteries. During cerebral artery surgery, it is necessary to locate and support the cerebral arteries. However, current cerebral artery stents need to be selected according to the shape of the cerebral arteries, resulting in generally insufficient flexibility of the cerebral artery stents currently in use. Therefore, there is an urgent need for an improved technology to solve this problem existing in the current technology. Utility Model Content
[0009] The purpose of this invention is to provide an intracranial artery stent that is constructed using a splicable elastic ring stent, which can be disassembled and spliced according to actual requirements. It is suitable for fixing and supporting intracranial arteries of different shapes and branches, greatly improving the applicability of the stent itself. Moreover, the elastic ring stent has better elasticity, thus providing better elastic support for the entire stent, thereby solving the problems mentioned in the background art.
[0010] To achieve the above objectives, the present invention provides the following technical solution: an intracranial artery stent, comprising an intracranial artery stent body, wherein a stent body is provided on the intracranial artery stent body, the stent body is cylindrical, and an elastic annular stent is provided on the stent body, and a connecting member is provided between two adjacent elastic annular stents.
[0011] The connector has a central cylinder, and anti-detachment clips are symmetrically arranged on both sides of the central cylinder. The anti-detachment clips and the central cylinder of the connector are an integral structure.
[0012] Preferably, the elastic ring support is circular in shape, and is a hollow ring with a smooth outer surface. The side wall of the elastic ring support is provided with a connecting hole that penetrates through the side wall of the elastic ring support.
[0013] Preferably, the anti-detachment clip is conical, and the maximum diameter of the anti-detachment clip is two-thirds of the diameter of the connecting hole.
[0014] Preferably, each adjacent elastic annular stent on the intracranial artery stent body can be disassembled.
[0015] Preferably, the anti-detachment clips symmetrically arranged on both sides of the cylinder on the connector are conical.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] (1) The cylinder is symmetrically provided with anti-detachment clips on both sides of the center. The anti-detachment clips and the cylinder in the center of the connector are an integral structure. The anti-detachment clips are conical. The maximum diameter of the anti-detachment clips is two-thirds of the diameter of the connecting hole. The anti-detachment clips adopt a single-entry design. Once the anti-detachment clips connect and fix the two elastic ring brackets, they are difficult to separate. The anti-detachment clips firmly connect the two elastic ring brackets together.
[0018] (2) A connecting piece is provided between two adjacent elastic ring supports. The elastic ring support is circular. The elastic ring support is a hollow ring with a smooth outer surface. The elastic ring support with a smooth outer surface has good elastic support and will not cause damage to human tissue.
[0019] (3) The support body is provided with an elastic ring support, and the side wall of the elastic ring support is provided with a connecting hole. The connecting hole penetrates the side wall of the elastic ring support and is used to install a connector, so that the entire support can be reasonably connected and expanded.
[0020] (4) The intracranial artery stent is constructed as a splicable elastic ring stent, which can be disassembled and spliced according to actual requirements. It is suitable for fixing and supporting intracranial arteries of different shapes and bifurcations, which greatly improves the applicability of the stent itself. Moreover, the elastic ring stent has better elasticity, which makes the stent as a whole have better elastic support. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the intracranial arterial stent structure of this utility model;
[0022] Figure 2 This is a schematic diagram of the intracranial artery stent tip structure of this utility model;
[0023] Figure 3 This is a schematic diagram of the connection structure of the elastic ring bracket of this utility model;
[0024] Figure 4 This is a schematic diagram of the connecting component structure of this utility model;
[0025] Figure 5 This is a schematic diagram of the side wall opening of the intracranial artery stent of this utility model.
[0026] In the diagram: 1. Intracranial artery stent body; 2. Stent body; 3. Elastic ring stent; 4. Connecting hole; 5. Connector; 6. Anti-dislodgement clip; 7. External connection hole. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] Please see Figure 1-5 This utility model provides a technical solution: an intracranial artery stent, including an intracranial artery stent body 1, a stent body 2 on the intracranial artery stent body 1, the stent body 2 being cylindrical, an elastic annular stent 3 on the stent body 2, a connecting hole 4 on the side wall of the elastic annular stent 3, the connecting hole 4 penetrating the side wall of the elastic annular stent 3, the connecting hole 4 being used for installing a connector, so that the entire stent can be reasonably connected and expanded.
[0029] A connector 5 is provided between two adjacent elastic ring brackets 3. A cylinder is provided in the center of the connector 5. Anti-detachment clips 6 are symmetrically provided on both sides of the cylinder. The anti-detachment clips 6 symmetrically provided on both sides of the cylinder on the connector 5 are conical and form a single-entry state. The anti-detachment clips 6 and the cylinder in the center of the connector 5 are an integral structure. The anti-detachment clips 6 are conical. The maximum diameter of the anti-detachment clips 6 is two-thirds of the diameter of the connecting hole 4. The anti-detachment clips 6 adopt a single-entry design. Once the anti-detachment clips 6 connect and fix the two elastic ring brackets 3, it is difficult to separate them. The anti-detachment clips 6 firmly connect the two elastic ring brackets 3 together.
[0030] The elastic ring stent 3 is circular in shape and is a hollow ring with a smooth outer surface. The smooth outer surface of the elastic ring stent 3 provides good elastic support without causing damage to human tissue. Each adjacent elastic ring stent 3 on the intracranial artery stent body 1 can be disassembled, which facilitates the modification of the stent shape according to the actual shape of the cerebral artery, greatly improving the flexibility of the cerebral artery stent.
[0031] Example 1,
[0032] When the cerebral artery is cylindrical during the operation, the elastic ring stent 3 forms a tubular shape, and the tubular intracranial artery stent body 1 is used to position and support the cerebral artery.
[0033] Example 2,
[0034] When the cerebral artery is a branched cerebral artery during surgery, the elastic ring stent 3 is disassembled and spliced to form a cerebral artery stent structure that meets the required positioning and support to locate the cerebral artery.
[0035] Stent implantation process: During the operation, the shape of the cerebral artery stent is adjusted according to the patient's cerebral artery stent. The stent is used to support and position the cerebral artery that requires the stent. If there are arterial branches in the cerebral artery, the elastic ring stent 3 on the intracranial artery stent body 1 is disassembled and spliced according to the actual situation to fix the cerebral artery branches.
[0036] The intracranial artery stent 1 is constructed from a splicable elastic ring stent, which can be disassembled and spliced according to actual requirements. It is suitable for fixing and supporting intracranial arteries of different shapes and bifurcations, which greatly improves the applicability of the stent itself. Moreover, the elastic ring stent has better elasticity, which makes the stent as a whole have better elastic support.
[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An intracranial artery stent comprising an intracranial artery stent body (1), characterized in that: The intracranial artery stent body (1) is provided with a stent body (2), the stent body (2) is cylindrical, the stent body (2) is provided with an elastic annular stent (3), and the adjacent two elastic annular stents (3) are provided with an adapter (5) in cooperation; The adapter (5) is provided with a cylinder in the center, and the two sides of the cylinder in the center are symmetrically provided with anti-dropping clips (6), and the anti-dropping clips (6) and the cylinder in the center of the adapter (5) are an integral structure.
2. The intracranial arterial stent of claim 1, wherein: The elastic annular stent (3) is a circular ring, and the elastic annular stent (3) is a hollow circular ring with smooth outer surface, and the side wall of the elastic annular stent (3) is provided with an adapter hole (4) penetrating through the side wall of the elastic annular stent (3).
3. The intracranial arterial stent of claim 1, wherein: The anti-dropping clip (6) is conical, and the maximum diameter of the anti-dropping clip (6) is two-thirds of the diameter of the adapter hole (4).
4. The intracranial arterial stent of claim 1, wherein: Each adjacent elastic annular stent (3) on the intracranial artery stent body (1) can be disassembled.
5. The intracranial arterial stent of claim 1, wherein: The anti-dropping clips (6) symmetrically arranged on both sides of the cylinder of the adapter (5) are conical.