Near-end anastomat for blood vessel

Abstract

According to the near-end anastomat for the blood vessel, in the near-end anastomat, an annular tool bit rotates under the action of a force storage spring; the blade inner rod is of a hollow structure and arranged in the annular tool bit in a penetrating mode, the circular blade is of a hollow structure and connected with the blade inner rod, and the circular blade is arranged in the annular tool bit in a concentric mode and extends out of the front end; the balloon assembly is arranged in the operating handle, the conveying catheter is movably arranged in the blade inner rod and the circular blade, the balloon body is detachably connected with the front end of the conveying catheter, the spiral catheter is arranged at the rear end of the conveying catheter in a communicated mode, and the two ends of the spiral catheter extend to form linear catheters under the action of axial external force. The liquid storage cavity is arranged at the rear end of the spiral catheter in a communicating mode, and the liquid pushing button is connected with the liquid storage cavity in a sliding mode.

Description

Technical Field

[0001] The invention relates to the technical field of blood vessel sealing, in particular to a proximal anastomosis device for blood vessels. Background Art

[0002] In recent years, with the aging of the population in my country, the prevalence of coronary heart disease has been increasing year by year, seriously threatening people's lives and health. More and more elderly patients with coronary heart disease need to undergo off-pump coronary artery bypass grafting. However, for off-pump coronary artery bypass grafting, the first thing to do is to seal the incision on the blood vessel wall, and creating a bloodless anastomosis area is the core technology of the operation. The commonly used blood sealing technology is a sealing method that uses an umbrella-shaped retractable incision to block the incision. The existing technology has poor reliability. In clinical practice, the hemostatic umbrella ruptures, resulting in the failure of the hemostatic function, cumbersome operation, and the existing instrument structure is too complicated. It is too cumbersome for medical staff to operate the instrument, which causes great difficulties and challenges in the operation. High risk: Due to the complex structure of the instrument and the large number of parts, there are increased safety hazards during surgery.

[0003] The information disclosed in this Background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art. Summary of the invention

[0004] In view of the deficiencies or defects of the prior art, a proximal anastomosis device for blood vessels is provided, which significantly improves the reliability, convenience and low risk of vascular anastomosis and blood sealing.

[0005] The purpose of the present invention is achieved through the following technical solutions.

[0006] A proximal anastomosis device for a blood vessel comprises: An operating handle comprising: An annular cutter head assembly comprising: Accumulator spring, An annular cutter head rotates under the action of a force storage spring; A circular blade assembly comprising: The inner blade rod is a hollow structure and is inserted into the annular blade head. A circular blade, which is a hollow structure and connected to the blade inner rod, is concentrically arranged in the annular blade head and extends from the front end; A balloon assembly is built into the operating handle, and the balloon assembly includes: A delivery conduit is movably disposed within the blade inner rod and the circular blade, The balloon body can be detached from the front end of the delivery catheter, The spiral conduit is connected to the rear end of the delivery conduit. The two ends of the spiral conduit extend into a linear conduit under the action of an axial external force. A liquid storage chamber is disposed in communication with the rear end of the spiral conduit. A liquid pushing button is slidably connected to the liquid storage chamber.

[0007] In the proximal anastomosis device for blood vessels, the annular blade assembly further comprises: The force storage spring support frame is a hollow structure. The rear end member of the force storage spring is arranged at the rear end of the force storage spring support frame, the rear end of the force storage spring rear end member has a positioning groove, and the rear end member of the force storage spring is provided with a first radial hole. The cutter head fixing piece is a hollow structure coaxial with the force storage spring support frame and is arranged at the front end of the force storage spring support frame. The cutter head fixing piece is provided with a second radial hole. The force storage spring is sleeved on the outer wall of the force storage spring support frame, and the front end of the force storage spring is inserted into the second radial hole, and the rear end of the force storage spring is inserted into the first radial hole to lock and store force. The annular cutter head is fixedly connected to the cutter head fixing part via a radial shaft pin and is located at the front end thereof. The annular cutter head and the cutter head fixing part rotate under the action of the force storage spring.

[0008] In the proximal anastomosis device for blood vessels, the circular blade assembly further comprises: The inner blade rod is inserted into the force storage spring support frame, the blade fixing part and the annular blade head. An annular groove is recessed on the upper side of the inner rod of the blade. A symmetrical one-line locking groove is provided on the upper side of the inner rod of the blade to cooperate with the radial shaft pin for front locking. A symmetrical one-line locking point is arranged on the side of the inner rod of the blade to cooperate with the locking groove for rear locking so that the power storage spring is in a power storage state when in the front locking position and the rear locking position. The pull rod is engaged with the locking groove. When the pull rod is pulled to the rear end, the radial shaft pins on the annular cutter head and the cutter head fixing member enter the annular groove, causing the front locking position of the radial shaft pin to fail. The force storage spring restores and rotates in the case of the front locking position failure, driving the annular cutter head and the cutter head fixing member to rotate and cut. The rear end of the pull rod is connected to the pull rod and is a hollow structure.

[0009] In the proximal anastomosis device for blood vessels, the front end of the balloon body is provided with an anti-damage tip.

[0010] In the proximal anastomosis device for blood vessels, the spiral catheter is a soft catheter.

[0011] In the proximal anastomosis device for blood vessels, the circular blade is arranged concentrically at 3-4 mm from the outer end of the annular blade head.

[0012] In the proximal anastomosis device for blood vessels, the balloon body is made of elastomeric material and becomes a unilateral concave balloon body shape when subjected to internal liquid pressure. Under the pressure of blood inside the blood vessel, the elastic wall of the concave circumference of the balloon body fits tightly with the outer circle of the incision of the blood vessel wall, producing a sealing effect.

[0013] In the proximal anastomosis device for blood vessels, the annular cutter head and the circular blade are extruded together to perforate the blood vessel wall.

[0014] In the proximal anastomosis device for blood vessels, when the spiral catheter is straightened, the balloon body is separated from the infusion catheter and remains in the blood vessel to play a sealing role.

[0015] In the proximal anastomosis device for a blood vessel, the proximal anastomosis device is an axisymmetric structure.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention changes the hemostatic parachute into a hemostatic balloon, thus preventing the failure of the hemostatic function due to the rupture of the hemostatic parachute rope and significantly improving the reliability; the coronary knife, the puncher and the balloon are organically formed into a whole, the operating actions are continuous, and the device can complete all the actions of incision, punching and balloon blood blocking by operating the device with one hand, which greatly reduces the requirements for operating skills and significantly improves the convenience; the balloon replaces the hemostatic parachute, and the traction rope, spring bracket, anchor and other components on the hemostatic parachute are eliminated, thereby simplifying the processing technology and reducing the risk of components falling off during use of the device.

[0017] The above description is only an overview of the technical solution of the present invention. In order to make the technical means of the present invention clearer and to achieve the extent that those skilled in the art can implement it according to the contents of the specification, and in order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are exemplified below. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By reading the detailed description of the preferred specific embodiments below, various other advantages and benefits of the present invention will become clear to those of ordinary skill in the art. The drawings in the specification are only for the purpose of illustrating the preferred embodiments and are not considered to be limitations of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work. Moreover, the same reference numerals are used to represent the same components throughout the drawings.

[0019] In the attached picture: Figure 1 It is a schematic diagram of the structure before assembly of the present invention; Figure 2 It is a schematic diagram of the assembled structure of the present invention; Figure 3 It is a schematic diagram of the structure of the circular blade of the present invention being placed into a blood vessel; Figure 4 This is a schematic diagram of the structure of the balloon of the present invention being placed in a blood vessel; Figure 5 It is a schematic diagram of the structure of the balloon of the present invention expanding in a blood vessel; Figure 6 This is a schematic diagram of the structure of opening a blood vessel according to the present invention; Figure 7 This is a schematic diagram of the structure of the balloon of the present invention sealing a blood vessel; Figure 8 It is a three-dimensional schematic diagram of the present invention when not in operation; Fig. 9 It is a three-dimensional schematic diagram of the present invention when it is working; Fig.10 It is a schematic diagram of the structure of the balloon body of the present invention before and after pre-filling; Fig.11 It is a structural schematic diagram of the annular cutter head assembly of the present invention; Fig.12 It is a structural schematic diagram of the force storage spring of the present invention; Fig.13 It is a structural schematic diagram of a circular blade assembly of the present invention; Fig.14 It is a schematic diagram of the assembly structure of the annular cutter head assembly and the circular blade assembly of the present invention; Fig.15 It is a schematic structural diagram of the annular cutter head assembly and the circular blade assembly assembly assembly structure of the present invention, in which the locking groove and the straight locking point on the side of the blade inner rod are pulled apart.

[0020] The present invention is further explained below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0021] The specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the specific embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0022] It should be noted that certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that technicians may use different nouns to refer to the same component. This specification and claims do not use the difference in nouns as a way to distinguish components, but use the difference in the functions of the components as the criterion for distinction. As mentioned throughout the specification and claims, "including" or "comprising" is an open term, so it should be interpreted as "including but not limited to". The subsequent description of the specification is a preferred embodiment of the present invention, but the description is based on the general principles of the specification and is not intended to limit the scope of the present invention. The scope of protection of the present invention shall be determined by the attached claims.

[0023] To facilitate understanding of the embodiments of the present invention, several specific embodiments will be further explained below with reference to the accompanying drawings, and each of the accompanying drawings does not constitute a limitation on the embodiments of the present invention.

[0024] For a better understanding, Figures 1 to 15 As shown, a proximal anastomosis device for a blood vessel comprises: An operating handle 2, comprising: The annular cutter head 201 assembly comprises: Accumulation spring 204, The annular cutter head 201 rotates under the action of the force storage spring 204; The circular blade 301 assembly comprises, The inner blade rod 302 is a hollow structure and is inserted into the annular blade head 201. A circular blade 301, which is a hollow structure and connected to the blade inner rod 302, is coaxially disposed in the annular blade head 201 and extends from the front end; The balloon assembly 1 is built into the operating handle 2, and the balloon assembly 1 includes: The delivery catheter 102 is movably disposed in the blade inner rod 302 and the circular blade 301. The balloon body 101A can be disconnected from the front end of the delivery catheter 102. The spiral conduit 104 is connected to the rear end of the delivery conduit 102. The two ends of the spiral conduit 104 extend into a linear conduit under the action of an axial external force. The liquid storage chamber 105 is connected to the rear end of the spiral conduit 104. The liquid pushing button 106 is slidably connected to the liquid storage chamber 105 .

[0025] In the preferred embodiment of the proximal anastomosis device for blood vessels, the annular cutter head 201 assembly further includes: The force storage spring support frame 203 is a hollow structure. The rear end member 205 of the force storage spring is arranged at the rear end of the force storage spring support frame 203. The rear end of the force storage spring rear end member 205 has a positioning groove, and the rear end member 205 of the force storage spring is provided with a first radial hole. The cutter head fixing member 202 is a hollow structure coaxial with the force storage spring support frame 203 and is arranged at the front end of the force storage spring support frame 203. The cutter head fixing member 202 is provided with a second radial hole. The force storage spring 204 is sleeved on the outer wall of the force storage spring support frame 203, and the front end of the force storage spring 204 is inserted into the second radial hole, and the rear end of the force storage spring 204 is inserted into the first radial hole to lock and store force. The annular cutter head 201 is fixedly connected to the cutter head fixing member 202 via a radial shaft pin and is located at the front end thereof. The annular cutter head 201 and the cutter head fixing member 202 rotate under the action of the force storage spring 204 .

[0026] In the preferred embodiment of the proximal stapler for blood vessels, the circular blade 301 assembly further comprises: The blade inner rod 302 is inserted into the force storage spring support frame 203, the blade fixing member 202 and the annular blade head 201. The annular groove is recessed on the upper side of the blade inner rod 302. A symmetrical one-line locking groove is provided on the upper side of the blade inner rod 302 to cooperate with the radial shaft pin for front locking. The symmetrical one-line locking point is arranged on the side of the blade inner rod 302 to cooperate with the locking groove for rear locking so that the power storage spring 204 is in a power storage state when in the front locking position and the rear locking position. The pull rod 303 is engaged with the locking groove. When the pull rod 303 is pulled to the rear end, the radial shaft pins on the annular cutter head 201 and the cutter head fixing member 202 enter the annular groove, causing the front locking position of the radial shaft pin to fail. The force storage spring 204 restores and rotates in the case of the front locking position failure, driving the annular cutter head 201 and the cutter head fixing member 202 to rotate and cut. The pull rod rear end 304 is connected to the pull rod 303 and is a hollow structure.

[0027] In a preferred embodiment of the proximal anastomosis device for blood vessels, an anti-damage tip 103 is provided at the front end of the balloon body.

[0028] In the preferred embodiment of the proximal anastomosis device for blood vessels, the spiral catheter 104 is a soft catheter.

[0029] In the preferred embodiment of the proximal stapler for blood vessels, the circular blade 301 is concentrically arranged at 3-4 mm from the outer end of the annular blade head 201 .

[0030] In the preferred embodiment of the proximal anastomosis device for blood vessels, the balloon body 101A is composed of an elastomeric material and becomes a unilateral concave balloon body 101B when subjected to internal liquid pressure. Under the pressure of the blood inside the blood vessel, the elastic wall of the concave circumference of the balloon body fits tightly with the outer circle of the incision on the blood vessel wall, producing a sealing effect.

[0031] In the preferred embodiment of the proximal stapler for blood vessels, the annular cutter head 201 and the circular blade 301 are extruded together to perforate the blood vessel wall.

[0032] In the preferred embodiment of the proximal anastomosis device for blood vessels, when the spiral catheter 104 is straightened, the balloon body is separated from the infusion catheter and remains in the blood vessel to play a sealing role.

[0033] In a preferred embodiment of the proximal stapler for a blood vessel, the proximal stapler is an axisymmetric structure.

[0034] In one embodiment, a proximal stapler for a blood vessel comprises: An operating handle 2, comprising: The annular cutter head 201 assembly comprises: The force storage spring support frame 203 is a hollow structure. The rear end member 205 of the force storage spring is arranged at the rear end of the force storage spring support frame 203. The rear end of the force storage spring rear end member 205 has a positioning groove, and the rear end member 205 of the force storage spring is provided with a first radial hole. The cutter head fixing member 202 is a hollow structure coaxial with the force storage spring support frame 203 and is arranged at the front end of the force storage spring support frame 203. The cutter head fixing member 202 is provided with a second radial hole. The force storage spring 204 is sleeved on the outer wall of the force storage spring support frame 203, and the front end of the force storage spring 204 is inserted into the second radial hole, and the rear end of the force storage spring 204 is inserted into the first radial hole to lock and store force. The annular cutter head 201 is fixedly connected to the cutter head fixing member 202 via a radial shaft pin and is located at the front end thereof. The annular cutter head 201 and the cutter head fixing member 202 rotate under the action of the force storage spring 204; The circular blade 301 assembly comprises, The blade inner rod 302 is a hollow structure and is inserted into the force storage spring support frame 203, the blade fixing member 202 and the annular blade head 201. The annular groove is recessed on the upper side of the blade inner rod 302. A symmetrical one-line locking groove is provided on the upper side of the blade inner rod 302 to cooperate with the radial shaft pin for front locking. The symmetrical one-line locking point is arranged on the side of the blade inner rod 302 to cooperate with the locking groove for rear locking so that the power storage spring 204 is in a power storage state when in the front locking position and the rear locking position. The circular blade 301 is a hollow structure and connected to the blade inner rod 302. The circular blade 301 is concentrically arranged in the annular blade head 201 and extends from the front end. The pull rod 303 is engaged with the locking groove. When the pull rod 303 is pulled to the rear end, the radial shaft pins on the annular cutter head 201 and the cutter head fixing member 202 enter the annular groove, causing the front locking position of the radial shaft pin to fail. The force storage spring 204 restores and rotates in the case of the front locking position failure, driving the annular cutter head 201 and the cutter head fixing member 202 to rotate and cut. The pull rod rear end 304 is connected to the pull rod 303 and is a hollow structure; The balloon assembly 1 is built into the operating handle 2, and the balloon assembly 1 includes: The delivery catheter 102 is movably disposed in the blade inner rod 302 and the circular blade 301. The balloon body can be disconnected from the front end of the delivery catheter 102, The spiral conduit 104 is connected to the rear end of the delivery conduit 102. The two ends of the spiral conduit 104 extend into a linear conduit under the action of an axial external force. The liquid storage chamber 105 is connected to the rear end of the spiral conduit 104 and is accommodated in the rear end 304 of the pull rod. The liquid push button 106 is slidably connected to the liquid storage chamber 105. The proximal anastomosis device for blood vessels can complete the perforation of blood vessels and the occlusion of balloons only by pushing and pulling.

[0035] In one embodiment, the proximal anastomosis device for blood vessels is composed of a balloon assembly 1 and an operating handle 2. Figure 1As shown, the balloon assembly 1 consists of six parts: a balloon body 101A, a delivery catheter 102, an anti-damage tip 103, a spiral catheter 104, a liquid storage chamber 105, and a liquid push button 106; the spiral catheter 104 is a soft catheter, and both ends of the catheter can be changed into a linear catheter under the action of an axial external force; the operating handle 2 consists of an annular blade head 201, a blade fixing part 202, a force storage spring support frame 203, a force storage spring 204, a force storage spring rear end part 205, a handle shell 206, a circular blade 301, a blade inner rod 302, a pull rod 303, and a pull rod rear end 304. The annular cutter head 201 is fixedly connected to the cutter head fixing part 202; the front and rear ends of the force storage spring 204 are respectively connected to the cutter head fixing part 202 and the rear end part 205 of the force storage spring, and the interior is supported by the force storage spring support frame 203. The annular cutter head 201 can rotate at high speed under the action of the force storage spring 204; wherein the balloon assembly 1 is built into the operating handle 2, and the annular cutter head 201, the cutter head fixing part 202, the force storage spring support frame 203, the circular blade 301, and the blade inner rod 302 are all hollow structures. The blade inner rod 302 is concentrically arranged inside the annular cutter head 201, and the circular blade 301 is concentrically arranged at 3-4 mm from the outer end of the annular cutter head 201. The balloon body 101A is arranged inside the blade inner rod 302; under the action of external force, the balloon body 101A can push out the circular blade 301, such as Figure 2 shown.

[0036] First, the blood vessel wall is punctured and incised with a circular blade 301, and then the circular blade 301 is inserted into the blood vessel through the opening. Figure 3 As shown, by pushing the push button 106 to drive the delivery catheter 102, the balloon 101A is placed inside the blood vessel, as shown in FIG. Figure 4 As shown, continue to push the liquid push button 106, the liquid in the liquid storage chamber 105 passes through the delivery catheter 102, pre-fills the balloon body 101A into a balloon shape 101B to seal the blood vessel incision and stop bleeding. The balloon body 101A is composed of an elastic material and will be transformed into a balloon shape 101B when subjected to a certain pressure from the internal liquid. The balloon shape 101B is a single-sided concave shape. Under the pressure of the blood inside the blood vessel, the elastic wall of the concave circumference of the balloon shape 101B fits tightly with the outer circle of the blood vessel wall incision to produce a sealing effect. Figure 5 As shown, the pull rod 303 is then pulled back, and the annular cutter head 201 rotates at a high speed under the action of the force storage spring 204. Under the joint rotary cutting and extrusion of the annular cutter head 201 and the circular blade 301, the blood vessel wall is perforated, as shown in FIG. Figure 6 As shown, the circular blade 301 is then withdrawn from the blood vessel, and the device is withdrawn outward. At this time, the spiral catheter 104 will be straightened under the action of external force, leaving only the balloon body 101B in the blood vessel to play a sealing role, as shown in FIG. Figure 7 shown.

[0037] In one embodiment, the annular cutter head assembly is composed of an annular cutter head 201, a cutter head fixing part 202, a force storage spring support frame 203, a force storage spring 204, a force storage spring rear end part 205, and a radial shaft pin 207, wherein the annular cutter head 201 and the cutter head fixing part 202 are fixedly connected by a radial shaft pin 207; the front end head 2041 of the force storage spring 204 is inserted into the second radial hole of the cutter head fixing part 202, and the rear end head 2042 of the force storage spring 204 is inserted into the first radial hole of the rear end part 205 of the force storage spring for connection and fixation, the interior of the force storage spring 204 is supported by the force storage spring support frame 203, and the rear end of the force storage spring rear end part 205 has a locking groove 208, and the annular cutter head 201 and the cutter head fixing part 202 can be rotated at high speed under the action of the force storage spring 204; the front and rear ends of the force storage spring 204 store force in the locked state, and when the locking position of one end fails, it will recover and enter a high-speed rotation state.

[0038] In one embodiment, the circular blade assembly is composed of a circular blade 301, a blade inner rod 302, a pull rod 303, a pull rod rear end 304, and a close-fitting connection, wherein the blade inner rod 302 has a symmetrical straight-line locking groove 3021 and an annular groove 3022 on the upper side, and a symmetrical straight-line locking point 305 is also set on the side. In the initial state, the annular cutter head assembly and the circular blade assembly are assembled as shown in FIG. Fig.14 As shown: the radial axis pin 207 on the annular cutter head is assembled in the straight-line locking groove 3021 on the side of the blade inner rod 302 for locking, and the straight-line locking point 305 on the side of the blade inner rod 302 is assembled in the locking groove 208 at the rear end of the storage spring rear end part 205 for locking. At this time, the storage spring is in the state of storing force when the front and rear locking positions are in place. Fig.14 As shown, when the pull rod 303 is pulled toward the rear end, the radial axis pin 207 on the annular cutter head 201 connected to the front end of the force storage spring and the annular cutter head of the cutter head fixing part 202 enters the annular groove 3022 of the blade inner rod 302, causing the radial axis pin 207 to fail to be positioned; the positioning groove 208 on the rear end part 205 of the force storage spring connected to the rear end of the force storage spring and the straight-line positioning point 305 on the side of the blade inner rod 302 are still normally positioned, and the force storage spring at one end fails to be positioned and performs high-speed recovery rotation, driving the annular cutter head 201 and the cutter head fixing part 202 to perform high-speed rotation cutting.

[0039] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0040] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A proximal anastomosis device for a blood vessel, characterized in that: These include, An operating handle comprising: An annular cutter head assembly comprising: Accumulator spring, An annular cutter head rotates under the action of a force storage spring; A circular blade assembly comprising: The inner blade rod is a hollow structure and is inserted into the annular blade head. A circular blade, which is a hollow structure and connected to the blade inner rod, is concentrically arranged in the annular blade head and extends from the front end; A balloon assembly is built into the operating handle, and the balloon assembly includes: A delivery conduit is movably disposed within the blade inner rod and the circular blade, The balloon body can be detached from the front end of the delivery catheter, The spiral conduit is connected to the rear end of the delivery conduit. The two ends of the spiral conduit extend into a linear conduit under the action of an axial external force. A liquid storage chamber is disposed in communication with the rear end of the spiral conduit. A liquid pushing button is slidably connected to the liquid storage chamber.

2. The proximal anastomosis device for a blood vessel according to claim 1, characterized in that: Preferably, the annular cutter head assembly further comprises: The force storage spring support frame is a hollow structure. The rear end member of the force storage spring is arranged at the rear end of the force storage spring support frame, the rear end of the force storage spring rear end member has a positioning groove, and the rear end member of the force storage spring is provided with a first radial hole. The cutter head fixing piece is a hollow structure coaxial with the force storage spring support frame and is arranged at the front end of the force storage spring support frame. The cutter head fixing piece is provided with a second radial hole. The force storage spring is sleeved on the outer wall of the force storage spring support frame, and the front end of the force storage spring is inserted into the second radial hole, and the rear end of the force storage spring is inserted into the first radial hole to lock and store force. The annular cutter head is fixedly connected to the cutter head fixing part via a radial shaft pin and is located at the front end thereof. The annular cutter head and the cutter head fixing part rotate under the action of the force storage spring.

3. The proximal anastomosis device for a blood vessel according to claim 2, characterized in that: The circular blade assembly also includes, The inner blade rod is inserted into the force storage spring support frame, the blade fixing part and the annular blade head. An annular groove is recessed on the upper side of the inner rod of the blade. A symmetrical one-line locking groove is provided on the upper side of the inner rod of the blade to cooperate with the radial shaft pin for front locking. A symmetrical one-line locking point is arranged on the side of the inner rod of the blade to cooperate with the locking groove for rear locking so that the power storage spring is in a power storage state when in the front locking position and the rear locking position. The pull rod is engaged with the locking groove. When the pull rod is pulled to the rear end, the radial shaft pins on the annular cutter head and the cutter head fixing member enter the annular groove, causing the front locking position of the radial shaft pin to fail. The force storage spring restores and rotates in the case of the front locking position failure, driving the annular cutter head and the cutter head fixing member to rotate and cut. The rear end of the pull rod is connected to the pull rod and is a hollow structure.

4. The proximal anastomosis device for a blood vessel according to claim 1, characterized in that: The front end of the balloon body is provided with an anti-damage tip.

5. The proximal anastomosis device for a blood vessel according to claim 1, characterized in that: The spiral catheter is a soft catheter.

6. The proximal anastomosis device for a blood vessel according to claim 1, characterized in that: The circular blade is concentrically arranged 3-4 mm from the outer end of the annular cutter head.

7. The proximal anastomosis device for a blood vessel according to claim 1, characterized in that: The balloon body is made of elastomeric material and becomes a unilateral concave shape when subjected to internal liquid pressure. Under the pressure of blood inside the blood vessel, the elastic wall of the concave circle of the balloon body fits tightly with the outer circle of the incision on the blood vessel wall, producing a sealing effect.

8. The proximal anastomosis device for a blood vessel according to claim 1, characterized in that: The annular cutter head and the circular blade are used together to perform rotary cutting and extrusion to perforate the blood vessel wall.

9. The proximal anastomosis device for a blood vessel according to claim 1, characterized in that: When the spiral catheter is straightened, the balloon body is separated from the infusion catheter and remains in the blood vessel to play a sealing role.

10. The proximal anastomosis device for a blood vessel according to claim 1, characterized in that: The proximal stapler is an axisymmetric structure.

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