Aortic arch support
By providing a recessed portion and a protruding branch tube on the aortic arch stent body, the problems of stent integrity destruction and internal leakage during use of the aortic arch are solved, and the effects of adapting to branch variations and reducing surgical risks are achieved.
Patent Information
- Application Number
- CN202422608938.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-10-28
AI Technical Summary
The existing aortic arch stent has the problem of damaging the integrity of the original stent and easily forming internal leakage during use in the aortic arch.
An aortic arch stent is designed, wherein a recessed portion is provided on the main body, and first, second, and third branch tubes are arranged on the recessed portion. The branch tubes protrude from the surface of the main body to adapt to the branch variation of the aortic arch, and form a gap with the aortic wall through the recessed portion to avoid internal leakage.
It can effectively adapt to the branch variation of the aortic arch, avoid the reduction of the inner diameter of the aortic trunk and internal leakage, maintain the integrity of the stent, and reduce surgical risks.
Smart Images
Figure CN223438695U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of medical apparatus and instruments, and particularly relates to an aortic arch stent. BACKGROUND
[0002] At present, aortic aneurysm and aortic dissection can be treated by endoluminal repair technology (aortic covered stent), while the lesion of aortic arch is limited to the use of aortic covered stent in the aortic arch due to the position variation of three branches (as shown in the following figure), the aortic arch stent in the prior art mainly includes the following two kinds:
[0003] (1) three windowing technology of arch part, but the three windowing technology of arch part can damage the integrity of the original stent, and there is a risk;
[0004] (2) combined stent, but the aortic arch stent formed by combination and splicing has multiple joints, and is prone to internal leakage, thereby causing the inner diameter of the aortic trunk to be reduced. INVENTION CONTENTS
[0005] The utility model solves the technical problem that the prior art can damage the integrity of the original stent, has a risk, and is prone to internal leakage.
[0006] In order to solve the above technical problem, the utility model adopts the following technical scheme:
[0007] An aortic arch stent comprises a body, the body is provided with a pre-bent shape, the body is provided with a recessed part, the recessed part is provided with a first branch pipe, a second branch pipe and a third branch pipe matched with an aortic arch, and the first branch pipe, the second branch pipe and the third branch pipe all protrude from the surface of the body.
[0008] As a preferred scheme of the utility model, the first branch pipe, the second branch pipe and the third branch pipe all protrude towards the inner side of the body.
[0009] As a preferred scheme of the utility model, the first branch pipe, the second branch pipe and the third branch pipe all protrude towards the outer side of the body.
[0010] As a preferred scheme of the utility model, the first branch pipe, the second branch pipe and the third branch pipe all protrude from the inner side and the outer side of the body.
[0011] As a preferred scheme of the utility model, the recessed part is filled with protein glue between the recessed part and the aortic arch.
[0012] As a preferred scheme of the utility model, the recessed depth of the recessed part is 3mm-5mm.
[0013] As a preferred scheme of the utility model, the extension length of the first branch pipe, the second branch pipe and the third branch pipe is 2mm-3mm.
[0014] Compared with the prior art, the aortic arch stent provided by the utility model has the beneficial effects that:
[0015] The aortic arch stent of the utility model has the recess on the body, so that a gap can be formed between the recess and the aortic wall after the stent is placed in the aortic arch, and thus the branch variation of the aortic arch can be limited in the area of the recess, which is applicable to most branch variations and does not cause the inner diameter of the aortic trunk to be reduced. In addition, the first branch pipe, the second branch pipe and the third branch pipe protrude from the surface of the body, so that the contact area of the branch blood vessel and the main blood vessel is increased from a point to a surface, thereby avoiding the internal leakage phenomenon. The aortic arch stent of the utility model is designed as a whole, so that the integrity of the stent is not damaged during the operation, and the risk is low. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings of the embodiments will be briefly introduced below.
[0017] Figure 1 is a structural schematic view of an aortic arch stent provided by the embodiments of the utility model;
[0018] Figure 2 is a structural schematic view of an aortic arch stent provided by the embodiments of the utility model in an installed state;
[0019] Figure 3 is a structural schematic view of a guide wire placement process;
[0020] Figure 4 is a structural schematic view of a branch blood vessel placement process;
[0021] Figure 5 is a structural schematic view of the first branch pipe, the second branch pipe and the third branch pipe of embodiment one;
[0022] Figure 6 is a structural schematic view of the first branch pipe, the second branch pipe and the third branch pipe of embodiment two;
[0023] Figure 7 is a structural schematic view of the first branch pipe, the second branch pipe and the third branch pipe of embodiment two.
[0024] Markings in the drawings:
[0025] Body 1; recess 2; first branch pipe 3; second branch pipe 4; third branch pipe 5; aortic arch 6; guide wire 7; branch blood vessel 8. DETAILED DESCRIPTION
[0026] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.
[0027] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. It should be understood that the terms "first", "second" and the like are used to describe various information in the present application, but these information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information can also be referred to as "second" information without departing from the scope of the present application, and similarly, "second" information can also be referred to as "first" information.
[0028] As shown in Figure 1 The preferred embodiment of the present application provides an aortic arch stent, which comprises a body 1, the body 1 is provided with a recess 2, the recess 2 is provided with a first branch pipe 3, a second branch pipe 4 and a third branch pipe 5 matched with the aortic arch 6, and the first branch pipe 3, the second branch pipe 4 and the third branch pipe 5 all protrude from the surface of the body.
[0029] The aortic arch 6 stent of the present application has the recess 2 on the body 1, so that after the stent is placed in the aortic arch 6, a gap can be formed between the recess 2 and the aortic wall, so that no matter how the branches of the aortic arch 6 vary, they can be limited within the area of the recess 2, which is suitable for most branch variation conditions and does not cause the phenomenon of aortic trunk diameter reduction. In addition, since the first branch pipe 3, the second branch pipe 4 and the third branch pipe 5 all protrude from the surface of the body 1, the contact area between the branch blood vessels and the main blood vessels can be increased from "point" to "surface", thereby better avoiding the occurrence of internal leakage. The aortic arch 6 stent of the present application is designed as a whole, and the integrity of the entire stent does not need to be destroyed during the operation, which is low-risk.
[0030] It should also be noted that, as Figure 3As shown, since there is a certain space between the first branch pipe 3, the second branch pipe 4, the third branch pipe 5 and the aortic arch 6, the guide wire 7 can be conveniently placed, and after the guide wire 7 is placed, the corresponding branch port can be selected, so that the intraoperative operation is convenient. Figure 4 As shown, the branch blood vessel can also be conveniently placed.
[0031] As shown, Figure 5 As shown, the first branch pipe 3, the second branch pipe 4 and the third branch pipe 5 all protrude towards the inner side of the body 1.
[0032] As shown, Figure 6 As shown, the first branch pipe 3, the second branch pipe 4 and the third branch pipe 5 all protrude towards the outer side of the body 1.
[0033] As shown, Figure 7 As shown, the first branch pipe 3, the second branch pipe 4 and the third branch pipe 5 all protrude towards the inner side and the outer side of the body 1.
[0034] As shown, the recess 2 is filled with protein glue between the aortic arch 6, which further prevents the occurrence of internal leakage.
[0035] In the embodiment, the recess depth of the recess 2 is 3mm-5mm, and the extension length of the first branch pipe 3, the second branch pipe 4 and the third branch pipe 5 is 2mm-3mm.
[0036] In the description of the present application, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0037] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection range of the present application.
Claims
1. An aortic arch stent, characterized in that: It includes a main body, which is set to a pre-bent shape. The main body is provided with a recessed portion, and the recessed portion is provided with a first branch tube, a second branch tube and a third branch tube that cooperate with the aortic arch. The first branch tube, the second branch tube and the third branch tube all protrude from the surface of the main body.
2. The aortic arch stent according to claim 1, characterized in that: The first branch pipe, the second branch pipe and the third branch pipe all protrude toward the inner side of the body.
3. The aortic arch stent according to claim 1, characterized in that: The first branch pipe, the second branch pipe and the third branch pipe all protrude toward the outside of the body.
4. The aortic arch stent according to claim 1, characterized in that: The first branch pipe, the second branch pipe and the third branch pipe all protrude from the inner side and the outer side of the body.
5. The aortic arch stent according to claim 1, characterized in that: The space between the concave portion and the aortic arch is filled with protein glue.
6. The aortic arch stent according to claim 1, characterized in that: The recessed portion has a depth of 3 mm to 5 mm.
7. The aortic arch stent according to claim 1, characterized in that: The first branch pipe, the second branch pipe and the third branch pipe have an extension length of 2 mm to 3 mm.