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CN-120036859-B - Vascular anastomosis device

CN120036859BCN 120036859 BCN120036859 BCN 120036859BCN-120036859-B

Abstract

The application relates to a vascular anastomosis device, which comprises a first supporting piece and a connecting piece, wherein the first supporting piece is provided with a first opening penetrating through the inner wall and the outer wall of the first supporting piece, the first opening is used for being opposite to a first fistula on a first blood vessel, the connecting piece comprises a tube part and a first clamping part connected with one end of the tube part, the connecting piece is provided with a blood flow channel penetrating through the tube part and the first clamping part along the axial direction of the tube part, the tube part penetrates through the first opening, and the first clamping part is arranged on the inner wall side of the first supporting piece and matched with the inner wall of the first supporting piece so as to seal and clamp the blood vessel wall around the first fistula on the first blood vessel. The vascular anastomosis device saves operation time, improves operation efficiency, and improves operation safety and postoperative recovery effect.

Inventors

  • ZHU XINGYU
  • TAN SHIZHENG
  • LIU KAI
  • WANG LIWEN
  • YUAN ZHENYU

Assignees

  • 上海蓝脉医疗科技有限公司

Dates

Publication Date
20260508
Application Date
20231124

Claims (9)

  1. 1. A vascular anastomosis device, comprising: a first support member having a first opening extending through an inner and outer wall thereof for opposing a first stoma site in a first vessel, and The connecting piece comprises a pipe part and a first clamping part connected to one end of the pipe part, a blood flow channel penetrating through the pipe part and the first clamping part is arranged in the axial direction of the pipe part, the pipe part penetrates through the first opening, the first clamping part is arranged on the inner wall side of the first supporting piece, and the first clamping part is matched with the inner wall of the first supporting piece and used for sealing and clamping the blood vessel wall around the first fistula on the first blood vessel; The inner wall of the first supporting piece is provided with a containing groove, the containing groove is communicated with the first opening, and the first clamping part is arranged in the containing groove and matched with the groove wall of the containing groove, so that the first clamping part is lower than or flush with the inner wall of the first supporting piece.
  2. 2. The vascular anastomosis device according to claim 1, wherein one of the groove wall of the accommodating groove and the first engaging portion is provided with a clamping protrusion, and the other is provided with a clamping groove adapted to the clamping protrusion, and the clamping protrusion is in clamping fit with the clamping groove.
  3. 3. The vascular anastomosis device of claim 1, wherein the first support member is a first sleeve, an inlet is provided on a side of the first support member facing away from the first opening, and the inlet penetrates both ends of the first support member in an axial direction of the first support member and communicates with the lumen of the first support member.
  4. 4. The vascular anastomosis device of claim 3, wherein the edges of the portal are serrated or undulating in a plane perpendicular to the axis of the first support member, or In a plane parallel to the axis of the first support, the edges of the inlet are in a zigzag or wavy configuration.
  5. 5. The vascular anastomosis device of claim 3, wherein the first support member is provided with an avoidance port, the avoidance port is in communication with the inlet, and a position of the avoidance port and a position of the first opening are disposed in correspondence in a circumferential direction of the first support member.
  6. 6. The vascular anastomosis device according to claim 1, wherein: The inner wall of the tube part and the first clamping part are respectively provided with a biocompatible protective layer, and/or, The outer wall of the first support piece and the outer wall of the pipe part are both coated with a biocompatible protective sleeve, and/or, The included angle between the central axis of the tube part and the central axis of the first blood vessel ranges from 40 degrees to 60 degrees.
  7. 7. The vascular anastomosis device according to any one of claims 1-6, further comprising a clip member which is in nesting engagement with the other end of the tube portion, the clip member being provided with a through hole communicating with the blood flow passage, the clip member being engaged with the tube portion for sealingly clamping the vessel wall at the end of the second vessel.
  8. 8. The vascular anastomosis device of claim 7, wherein one of the clasp and the tube is provided with a boss and the other is provided with a recess adapted to the boss, the boss being disposed in the recess.
  9. 9. The vascular anastomosis device of any of claims 1-6, further comprising a second support member having a second opening therethrough for positioning against a second stoma in a second blood vessel, the connector member further comprising a second engaging portion connected to an end of the tube portion facing away from the first engaging portion, the tube portion further being disposed in the second opening, the second engaging portion being disposed on an inner wall side of the second support member, the second engaging portion cooperating with an inner wall of the second support member for sealingly clamping a wall of the blood vessel surrounding the second stoma in the second blood vessel.

Description

Vascular anastomosis device Technical Field The application relates to the technical field of medical appliances, in particular to a vascular anastomosis device. Background Hemodialysis is one of the main kidney replacement treatment modes of patients with renal failure, and establishing an effective vascular access is a premise that hemodialysis proceeds smoothly. An autologous arteriovenous fistula (AVF) access or vascular graft internal fistula (AVG) access is commonly used clinically to provide the hemodialysis patient with the blood access needed for dialysis. In AVF, a doctor is usually required to anastomose an artery with a vein and manually suture the anastomosed site to form a blood flow channel, however, manual suturing has high requirements on skills of the doctor, suturing effects of different doctors are different, doctors skilled in grasping micro-sized vascular suturing technology are required to practice training for at least 3 to 5 years, experience is accumulated, even doctors with very abundant experience have possibility of suturing errors, and errors caused by the human factors may directly lead to complications such as vascular injury, infection and the like and directly affect long-term patency of the blood vessel. In addition, manual suturing is time consuming, extends the surgical time, increases the risk of infection to the patient, and also greatly consumes time and effort from the physician. Meanwhile, manual suturing inevitably causes intimal injury of blood vessels due to stimulation of suture needles and the like, and may cause vasospasm during operation and even cause formation of intravascular thrombosis. Disclosure of Invention Based on this, it is necessary to provide a vascular anastomosis device in order to solve the problem of how to form a blood flow path more conveniently and safely. The present application provides a vascular anastomosis device comprising: a first support member having a first opening extending through an inner and outer wall thereof for opposing a first stoma site in a first vessel, and The connecting piece, the connecting piece include the pipe portion and connect in the first block portion of pipe portion one end, the connecting piece is followed the axial of pipe portion is equipped with runs through the pipe portion with the blood flow channel of first block portion, the pipe portion wears to locate first opening, first block portion set up in the inner wall side of first support piece, first block portion with the inner wall of first support piece cooperatees, is used for sealed centre gripping on the first blood vessel vascular wall around the first fistula. The technical scheme is further described as follows: in one embodiment, the inner wall of the first supporting member is provided with a containing groove, the containing groove is communicated with the first opening, and the first clamping part is arranged in the containing groove and is matched with the groove wall of the containing groove. In one embodiment, one of the groove wall of the accommodating groove and the first clamping portion is provided with a clamping protrusion, and the other is provided with a clamping groove matched with the clamping protrusion, and the clamping protrusion is in clamping fit with the clamping groove. In one embodiment, the first support member is a first sleeve, and an inlet is formed in one side, facing away from the first opening, of the first support member, and penetrates through two ends of the first support member in the axial direction of the first support member and is communicated with the inner cavity of the first support member. In one embodiment, the edges of the inlet are in a zigzag or wavy configuration in a plane perpendicular to the axis of the first support, or in a plane parallel to the axis of the first support. In one embodiment, the first support member is provided with an avoidance port, the avoidance port is communicated with the inlet, and the position of the avoidance port and the position of the first opening are correspondingly arranged in the circumferential direction of the first support member. In one embodiment, the inner wall of the tube portion and the first engaging portion are provided with a biocompatible protective layer, and/or, The outer wall of the first supporting piece and the outer wall of the pipe part are both coated with a biocompatible protective sleeve. In one embodiment, the included angle between the central axis of the tube portion and the central axis of the first blood vessel ranges from 40 ° to 60 °. In one embodiment, the vascular anastomosis device further comprises a buckling piece, the buckling piece is in nested fit with the other end of the tube portion, the buckling piece is provided with a through hole communicated with the blood flow channel, and the buckling piece is matched with the tube portion and used for sealing and clamping the vascular wall of the second vascular end portion. In