支架

Abstract

本实用新型涉及医疗器械技术领域，公开了支架，包括支架本体和包覆单元，通过设置支架本体和包覆单元，使得支架本体能够将第一血管和第二血管的内部进行支撑，包覆单元能够作为内膜，重塑第二血管的真腔，使得血液以正常的流速进行流通，且支架本体上设有第一开口，包覆单元上设有第二开口，使得第四血管能够通过第一开口和第二开口与第一血管连通。基于此，仅将升主动脉上的破口位置更换为第三血管即可，无需相关技术中的四分支人工血管对部分升主动脉及主动脉三分支整体进行置换，相比于相关技术中五处吻合点位，本实用新型的吻合点位为两处，减少吻合点位的数量，从而节约了手术时间，进而达到降低手术风险的技术效果。

Claims

1. A stent for placement inside a first blood vessel (1) and a second blood vessel (2), one end of the first blood vessel (1) communicating with the second blood vessel (2), the other end of the first blood vessel (1) communicating with a third blood vessel (3), and one side of the first blood vessel (1) communicating with a fourth blood vessel (4), characterized in that, The support includes: The stent body (5) has one end located in the first blood vessel (1) and the other end located in the second blood vessel (2). The stent body (5) has a first opening at the position corresponding to the fourth blood vessel (4). The first opening is used to connect the stent body (5) with the fourth blood vessel (4). Covering unit (6) is provided at least on the side of the stent body (5) near the second blood vessel (2) for covering the stent body (5). The covering unit (6) has a second opening (601) corresponding to the position of the fourth blood vessel (4). The second opening (601) is used to expose the first opening of the stent body (5) so that the fourth blood vessel (4) can communicate with the first blood vessel (1) through the stent body (5).

2. The stent of claim 1, wherein The support body (5) has a mesh structure, and the opening of the mesh structure forms the first opening; And / or, the support body (5) is annular; And / or, the bracket body (5) is a stainless steel bracket body; And / or, the outer wall of the stent body (5) is configured to fit against the inner wall of the first blood vessel (1) and the second blood vessel (2); And / or, a cross-section is made along the direction perpendicular to the axis of the support body (5), and the cross-sectional shape of the support body (5) is circular; And / or, the covering unit (6) is disposed on the inner wall of the support body (5) and / or the outer wall of the support body (5); And / or, the coating unit (6) is a thin film structure; And / or, the size of the second opening (601) is not less than the size of the communication opening on the fourth blood vessel (4) corresponding to the stent body (5).

3. The stent of claim 2, wherein Along the radial direction of the support body (5), the support body (5) has at least two layers; And / or, the covering unit (6) extends from one end of the stent body (5) to the other end of the stent body (5), and the second opening (601) extends from one end of the stent body (5) to the connection between the first blood vessel (1) and the second blood vessel (2).

4. The stent defined in any one of claims 1-3, wherein, The support includes: The anastomosis unit (7) is connected at one end to one end of the stent body (5) or at one end of the covering unit (6) away from the second blood vessel (2), and the other end of the anastomosis unit (7) is used to connect to both the third blood vessel (3) and the first blood vessel (1).

5. The stent of claim 4, wherein, The anastomosis unit (7) is sutured and fixed to the stent body (5) or the covering unit (6); Alternatively, the anastomosis unit (7) and the covering unit (6) may be integrated into one unit.

6. The stent defined in Claim 4, wherein, The anastomosis unit (7) is a thin film structure.

7. The stent defined in Claim 6, wherein, The anastomosis unit (7) is an expanded polytetrafluoroethylene membrane.

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