A system for laser-assisted anastomosis of vascular tissue

Abstract

The application provides a kind of for blood vessel tissue laser connection auxiliary device system, belongs to welding technical field.The system is: auxiliary device, detects blood vessel tissue position, places the degradable stent inside tissue and plays the supporting role and applies longitudinal load to the tissue to be connected;Visual sensing device, record the image of blood vessel tissue connection process and feedback to processor, adjust laser scanning path;Temperature monitoring device, monitor welding temperature at any time and feedback to processor, adjust laser connection temperature.The system device of the application can efficiently process the tissue to be connected, and the structure is simple, the production cost is low, and can be widely applied.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of welding technology, in particular to a kind of for blood vessel tissue laser connection auxiliary device system. BACKGROUND

[0002] Laser connection technology has developed so far, laser connection has made great breakthrough in blood vessel tissue closure. Laser connection is realized when laser energy induces photo-mechanical and photo-thermal tissue changes, which is mainly due to its ability to selectively regulate the biological function of cells. However, during the laser connection process, the blood vessel tissue will shrink due to its own elasticity, which will affect the tensile strength and burst pressure (BP) of the connected tissue, and the connected blood vessel tissue is prone to incomplete closure. At the same time, the current connection system requires higher operating personnel. In order to achieve better end-to-end closure of blood vessel tissue, it is necessary to design a device system with simple structure, convenient operation and good connection effect for the field of blood vessel tissue laser connection instruments. SUMMARY

[0003] In order to solve the problems mentioned in the above background art, the specific technical solution is as follows:

[0004] A kind of for blood vessel tissue laser connection auxiliary device system, comprising:

[0005] Auxiliary device, detect blood vessel tissue position, place degradable stent inside the tissue to play a supporting role and apply longitudinal load to the tissue to be connected;

[0006] Visual sensing device, record blood vessel tissue connection process image and feedback to processor, adjust laser scanning path;

[0007] Temperature monitoring device, monitor welding temperature at all times and feedback to processor, adjust laser connection temperature;

[0008] The specific features of the present application are:

[0009] The auxiliary device includes a collar, an auxiliary rod body, a light sensor, a slider controller, a stent placement forceps and a clamping structure.

[0010] The collar is located at the end of the auxiliary rod body, and the collar is made of stainless steel material;

[0011] The auxiliary rod body is located at the center of the device, and the auxiliary rod body is made of stainless steel material, and the end of the auxiliary rod body close to the collar is provided with a section of annular thread;

[0012] The light sensor is connected with the auxiliary rod body through a light sensor moving ring, and the light sensor is fixed with the auxiliary rod body. The light sensor is used to detect the position of the blood vessel tissue, and the change of the position of the blood vessel tissue before and after the change of the light signal is converted into an electrical signal and transmitted to the slider controller.

[0013] The slider controller is connected with the light sensor to control the up and down movement of the slider;

[0014] The support placing forceps are connected with the auxiliary rod body through the control button and the control line, and are controlled through the control button and the control line at the end of the auxiliary rod body. The support placing forceps are made of stainless steel material, are fixed with the auxiliary rod body, and are provided with elliptical baffles which can adapt to the diameter of the blood vessel tissue and are connected through the second rotating shaft.

[0015] The main part of the clamping structure is made of stainless steel material, and the action part of the clamping structure is made of medical rubber material and is arc-shaped, so that when the clamping structure acts, the device can avoid additional damage to the blood vessel tissue. The clamping structure further comprises a first forceps body and a second forceps body, and the first forceps body and the second forceps body are connected with the spring through the first rotating shaft. The angle of the middle segment of the first forceps body and the second forceps body is 108°.

[0016] The auxiliary device, the light sensor first acquires the information of the position of the blood vessel tissue on the sample fixing device through the adjustment of the light sensor moving ring, and then the slider controller adjusts the slider. The support placing forceps place the degradable stent into the blood vessel tissue to support the structure of the blood vessel tissue. The clamping structure applies pre-load to the corresponding part. The cooperation of each part plays an auxiliary role, and the connection effect is better.

[0017] The visual sensing device adopts a charge coupled device (CCD) camera, acquires image space information dimensions through a binocular stereo vision method, and transmits the image information to a processor to achieve the purpose of visual sensing connection trace tracking and adjust the scanning path of the blood vessel tissue.

[0018] The temperature monitoring device comprises a temperature information collector and a processor. The temperature collector transmits signals to the processor, feeds back to the laser connection device, and adjusts to a suitable connection temperature.

[0019] Working process:

[0020] Before connection, the sample fixing device is used to fix the blood vessel tissue to be connected. The light sensor in the auxiliary device first acquires the information of the position of the blood vessel tissue on the sample fixing device through the adjustment of the light sensor moving ring, and then the slider controller adjusts the slider. The support placing forceps place the degradable stent into the blood vessel tissue to support the structure of the blood vessel tissue. The clamping structure applies pre-load to the corresponding part. When connecting, the laser is turned on to align the position of the blood vessel tissue to be connected. The CCD camera in the visual sensing device acquires image space information through a binocular stereo vision method and transmits the image information to a processor to realize connection trace tracking and adjust the scanning path. The temperature information collector in the temperature monitoring device transmits signals to the processor to adjust the connection temperature.

[0021] The beneficial effects of the present application are as follows:

[0022] The present application provides a kind of for blood vessel tissue laser connection auxiliary device system to assist the fixation of broken, ruptured blood vessel tissue;The present application can realize the efficient connection of blood vessel tissue compared with conventional blood vessel tissue connection system, with the characteristics of simple structure, easy operation, low product cost itself, can shorten the connection time, improve the fusion effect of broken, ruptured biological tissue;The blood vessel tissue laser connection device system can be widely used in the field of blood vessel tissue connection on a large scale. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A working schematic diagram of the auxiliary device system for blood vessel tissue laser connection provided by the present application is provided;

[0024] Figure 2 A working flow chart of the auxiliary device system for blood vessel tissue laser connection provided by the present application is provided;

[0025] Figure 3 An elevational view of the auxiliary device in the auxiliary device system for blood vessel tissue laser connection provided by the present application is provided;

[0026] Figure 4 A side sectional view of the auxiliary device in the auxiliary device system for blood vessel tissue laser connection provided by the present application is provided;

[0027] Figure 5 An enlarged view of the local A area of the blood vessel tissue in the working schematic diagram of the auxiliary device system for blood vessel tissue laser connection provided by the present application is provided.

[0028] The reference signs are as follows: 1, auxiliary device;1-1, collar;1-2, control button;1-3, auxiliary rod body;1-4, control line;1-5, first rotating shaft;1-6, first jaw body;1-7, spring;1-8, second jaw body;1-9, guide rail;1-10, sliding block;1-11, fixing ring;1-12, sliding block controller;1-13, connecting line;1-14, light sensor moving ring;1-15, light sensor;1-16, second rotating shaft;1-17, bracket placement clamp;2-1, CCD camera one;2-2, CCD camera two;3, temperature information collector;4, laser;5, sample fixing device. DETAILED DESCRIPTION

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application.

[0030] In order to make the blood vessel tissue end to end to achieve better closure or connection effect, so as to meet the tensile strength and burst pressure (BP) requirements of the blood vessel tissue, the application provides a blood vessel tissue laser connection auxiliary device and system with simple structure and convenient operation, please refer to Figures 1 to 5 .

[0031] Figure 1 A working schematic diagram of a blood vessel tissue laser connection auxiliary device system is provided.

[0032] Figure 2 A working flowchart of a blood vessel tissue laser connection auxiliary device system is provided.

[0033] Figure 3 A front view of an auxiliary device in a blood vessel tissue laser connection auxiliary device system is provided.

[0034] Figure 4 A side sectional view of an auxiliary device in a blood vessel tissue laser connection auxiliary device system is provided.

[0035] Figure 5 A blood vessel tissue local area A enlarged view in a working schematic diagram of a blood vessel tissue laser connection auxiliary device system is provided. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all embodiments of the application.

[0038] In the description of the application, it should be noted that the terms "upper", "lower" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of describing the application and simplifying the description, and do not indicate or imply that the device must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the application. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0039] The application provides a blood vessel tissue laser connection auxiliary device system which is simple in structure and convenient to operate. The blood vessel tissue laser connection auxiliary device system can effectively connect the broken and ruptured blood vessel tissue. The auxiliary device is quite different from the longitudinal compression forceps mentioned in the article "Improving the Strength of Sutureless Laser-Assisted Vessel Repair Using Preloaded Longitudinal Compression on Tissue Edge" published by Nakadate et al. in 2017. The longitudinal compression forceps in the article are only used for the connection of in-vitro blood vessel tissue, while the auxiliary device adopts an optical sensor and a controller. The position of the blood vessel tissue can be recognized by using the characteristics of the optical sensor. The blood vessel tissue can be in-vitro tissue or in-vivo tissue. Then the controller controls the clamping structure in the application to pretreat the corresponding blood vessel tissue. In combination with the support of the stent on the blood vessel tissue, the connection process can be facilitated, the connection time can be shortened, and the connection effect can be improved.

[0040] Specifically, the application relates to a blood vessel tissue laser connection auxiliary device system which comprises the following components.

[0041] An auxiliary device is used for detecting the position of the blood vessel tissue, placing a degradable stent into the inside of the tissue to play a supporting role, and applying a longitudinal load to the tissue to be connected.

[0042] A visual sensing device is used for recording the image of the blood vessel tissue connection process and feeding back to a processor to adjust the laser scanning path.

[0043] A temperature monitoring device is used for monitoring the welding temperature at any time and feeding back to the processor to adjust the laser connection temperature.

[0044] The auxiliary device 1 comprises a sleeve ring 1-1, an auxiliary rod body 1-3, an optical sensor 1-15, a slider controller 1-12, a stent placing forceps 1-17 and a clamping structure.

[0045] The sleeve ring 1-1 is located at the end of the auxiliary rod body 1-3, and the sleeve ring 1-1 is made of stainless steel.

[0046] The auxiliary rod body 1-3 is located at the center of the device, and the auxiliary rod body 1-3 is made of stainless steel. A section of annular thread is arranged at the end of the auxiliary rod body 1-3 close to the sleeve ring 1-1.

[0047] The optical sensor 1-15 is connected with the auxiliary rod body 1-3 through an optical sensor moving ring 1-14, and the optical sensor 1-15 is fixed with the auxiliary rod body 1-3. The optical sensor 1-15 is used for detecting the position of the blood vessel tissue. The front and back changes of the position of the blood vessel tissue make the optical signal change into an electric signal which is transmitted to the slider controller 1-12.

[0048] The slider controller 1-12 is connected with the light sensor 1-15 to control the up and down movement of the slider 1-10;

[0049] The bracket placement forceps 1-17 are connected with the auxiliary rod body 1-3 through the control button 1-2 and the control line 1-4, and are controlled through the end control button 1-2 and the control line 1-4 of the auxiliary rod body 1-3. The bracket placement forceps 1-17 are made of stainless steel material and are fixed with the auxiliary rod body 1-3. An oval baffle that can adapt to the diameter of the blood vessel tissue is arranged, and the two baffles are connected through the second rotating shaft 1-16, which facilitates the taking and placing of the degradable blood vessel stent and provides protection for the subsequent connection of the blood vessel tissue.

[0050] The main part of the clamping structure is made of stainless steel material, and the action part of the clamping structure is made of medical rubber material, and the action part is arc-shaped. When the clamping structure acts, the device avoids additional damage to the blood vessel tissue. The clamping structure further includes a first forceps body 1-6 and a second forceps body 1-8. The first forceps body 1-6 and the second forceps body 1-8 are connected with the spring 1-7 through the first rotating shaft 1-5. The angle of the middle segment of the first forceps body and the second forceps body is 108°. The cross-shaped rotating shaft connection of the first forceps body 1-6 and the second forceps body 1-8 can utilize the resultant force to implement preloading longitudinal compression on the blood vessel tissue fracture and rupture position, so that the contraction of the blood vessel connection tissue is greatly reduced or even completely disappears, thereby better controlling the degree of preloading and obtaining a more perfect connection effect.

[0051] In the auxiliary device 1, the light sensor 1-15 first obtains the information of the position of the blood vessel tissue on the sample fixing device 5 by adjusting the light sensor moving ring 1-14, and then the slider controller 1-12 adjusts the slider 1-10. The bracket placement forceps 1-17 place the degradable stent in the blood vessel tissue to support the structure of the blood vessel tissue. The clamping structure implements preloading on the corresponding position. The cooperation of each part plays an auxiliary role, which can make the connection effect better.

[0052] The visual sensing device adopts a charge-coupled device (CCD) camera 1 2-1 and a CCD camera 2 2-2. By using the binocular stereo vision method, the same connection scene is shot by two CCD cameras 1 2-1 and 2 2-2 at different positions. The parallax of the spatial points in the two images is calculated to obtain the required image spatial information dimension. The image information is transmitted to the processor to achieve the purpose of visual sensing connection trace tracking and adjust the scanning path of the blood vessel tissue.

[0053] The temperature monitoring device includes a temperature information collector 3 and a processor. The signal is transmitted to the processor through the temperature information collector 3 and is fed back to the laser connection device to adjust to the appropriate connection temperature.

[0054] Working process:

[0055] Before connection, the sample fixing device is used to fix the blood vessel tissue to be connected. The light sensor 1-15 in the auxiliary device 1 first acquires the position information of the blood vessel tissue on the sample fixing device 5 by adjusting the light sensor moving ring 1-14, and then the slider controller 1-12 adjusts the slider 1-10. The stent placing forceps 1-17 place the degradable stent into the blood vessel tissue to support the structure of the blood vessel tissue, and the clamping structure applies a preload to the corresponding part. During connection, the laser 4 is turned on to align the position of the blood vessel tissue to be connected. The CCD cameras 2-1 and 2-2 in the visual sensing device acquire the image space information by the binocular stereo vision method and transmit the information to the processor to realize connection trace tracking and scanning path adjustment. The temperature information collector 3 in the temperature monitoring device transmits the signal to the processor to adjust the connection temperature.

[0056] Embodiment 1:

[0057] This embodiment is combined with a specific in vitro blood vessel tissue connection experiment, as shown in Figures 1 to 5 , the present application is further described:

[0058] Before connection, a fresh pig carotid artery sample with a length of 80 mm, an inner diameter of 30 mm and a thickness of 3 mm is selected, a half-week incision is made in the center, and the sample is soaked in bovine serum protein fluxing agent for 10 min. On the operation platform, the sample is fixed by the sample fixing device 5, as shown in Figure 1 , to facilitate the connection of the blood vessel tissue. The laser 4 is a 1064 nm continuous fiber laser with an output power of 5 W and a scanning speed of 250 mm / s. As shown in Figure 1 , the auxiliary device 1 is held, the light sensor moving ring 1-14 is adjusted to make the "U" groove of the light sensor 1-15 align with the blood vessel tissue. The light sensor 1-15 is a "U825" close-fitting sensor. The light sensor 1-15 receives the light signal and then converts it into an electrical signal, which is transmitted to the slider controller 1-12 through the connecting line 1-13. When the electrical signal is transmitted to the slider controller 1-12 through the connecting line 1-13, the slider controller 1-12 processes the signal and outputs information to control the slider 1-10 to move downward. The spring 1-7 is in a relaxed state, and the first jaw body 1-6 and the second jaw body 1-8 are also closed along the axial direction of the blood vessel tissue to the center to pre-press the blood vessel tissue. The spring 1-7 connected between the two jaw bodies through the cross-shaped rotating shaft can better control the intensity of the preload. After the first jaw body 1-6 and the second jaw body 1-8 are closed, the operation control button 1-2 is operated to place the degradable stent into the blood vessel tissue by the stent placing forceps 1-17. The stent placing forceps 1-17 carry the degradable stent into the incision of the blood vessel tissue, and then withdraw from the blood vessel tissue. The blood vessel connection preparation is completed.

[0059] When connecting, the blood vessel tissue is pretreated, and the corresponding blood vessel broken tissue is connected by adjusting the position of the laser 4. The visual sensing device uses a CCD camera 2-1, 2-2, and the same connection scene is photographed by two CCD cameras 2-1, 2-2 at different positions through binocular stereo vision method. The parallax of the spatial point in the two images is calculated to obtain the required image spatial information dimension. The image information is transmitted to the processor to achieve the purpose of visual sensing connection trace tracking and adjust the scanning path of the blood vessel tissue. At the same time, it is also convenient to analyze the quality of the connected broken or fractured blood vessel tissue; the temperature monitoring device monitors the laser connection temperature through the temperature information collector 3, transmits the signal to the processor, and feeds back to the laser 4, and adjusts the laser power and scanning speed to 60℃.

[0060] After the connection is completed, the light sensor moving ring 1-14 is adjusted, the "U" groove of the light sensor 1-15 is away from the blood vessel tissue, the signal is transmitted to the slider controller 1-12, and then the slider 1-10 is controlled to move upward. The first clamp body 1-6 and the second clamp body 1-8 are automatically reset, and the patency of the connection site and the connection effect can be further determined by visual evaluation and blast pressure (BP) measurement.

[0061] In the auxiliary device 1, the sleeve ring 1-1 is designed as a single ring, which simplifies the structure compared with the double ring design of the conventional surgical clamp, and is convenient for handheld operation; the oval baffle of the stent placement clamp 1-17 allows the placement of a biodegradable stent in the blood vessel tissue to support the structure of the blood vessel tissue; the clamp head part of the two clamp bodies of the clamping structure is designed as an arc structure compared with the conventional metal clamp head, which is more suitable for the shape of the blood vessel, and the material uses medical rubber to implement preloading on the corresponding part, which avoids secondary damage caused by the operation to a certain extent.

[0062] When operating the auxiliary device, the light sensor first obtains the information of the position of the blood vessel tissue on the sample fixing device by adjusting the light sensor moving ring, and then the slider controller adjusts the slider. The stent placement clamp places a biodegradable stent in the blood vessel tissue to support the structure of the blood vessel tissue, and the clamping structure implements preloading on the corresponding part. The cooperation of each part plays an auxiliary role to make the connection effect better.

[0063] The application discloses a system of a laser connection auxiliary device for blood vessel tissues, which comprises a sample fixing device for fixing blood vessel tissues to be connected before connection, a light sensor in the auxiliary device, a slider controller, a support placing clamp, a support structure and a clamping structure.

[0064] Compared with the conventional blood vessel tissue connection system, the system of the laser connection auxiliary device for blood vessel tissues can realize efficient connection of blood vessel tissues through cooperation of the auxiliary device, the visual sensing device and the temperature monitoring device, has the characteristics of simple structure, convenient operation and low cost, can shorten the connection time, and can improve the fusion effect of broken and fractured biological tissues.

Claims

1. A system for a laser-assisted anastomosis of vascular tissue, characterized by The application relates to a device for connecting blood vessel tissues, which comprises the following parts: an auxiliary device for detecting the position of blood vessel tissues, placing a supportable degradable support into the tissues and applying a longitudinal load to the tissues to be connected; a visual sensing device for recording the image of the process of connecting the blood vessel tissues and feeding back to the processor to adjust the laser scanning path; and a temperature monitoring device for monitoring the welding temperature at any time and feeding back to the processor to adjust the laser connection temperature. The auxiliary device comprises a sleeve ring (1-1), an auxiliary rod body (1-3), a light sensor (1-15), a slider controller (1-12), a support placing clamp (1-17) and a clamping structure. The sleeve ring (1-1) is located at the end of the auxiliary rod body (1-3). The auxiliary rod body (1-3) is located at the center of the device. The end of the auxiliary rod body (1-3) close to the sleeve ring (1-1) is provided with a section of annular thread. The light sensor (1-15) is connected with the auxiliary rod body (1-3) through a light sensor moving ring (1-14), and the light sensor (1-15) is fixed with the auxiliary rod body (1-3); the light sensor (1-15) is used for detecting the position of the blood vessel tissues, and the front and back changes of the position of the blood vessel tissues are used for converting the light signal into an electric signal and transmitting the electric signal to the slider controller (1-12). The slider controller (1-12) is connected with the light sensor (1-15) and is used for controlling the up and down movement of a slider (1-10). The support placing clamp (1-17) is connected with the auxiliary rod body (1-3) through a control button (1-2) and a control line (1-4); the control button (1-2) and the control line (1-4) are controlled through the end control button (1-2) of the auxiliary rod body (1-3); the support placing clamp (1-17) is fixed with the auxiliary rod body (1-3) and is provided with elliptical baffles which can adapt to the diameter of the blood vessel tissues and are connected through a second rotating shaft (1-16). The clamping structure is used for avoiding the additional damage of the device to the blood vessel tissues and comprises a first clamp body (1-6) and a second clamp body (1-8); the first clamp body (1-6) and the second clamp body (1-8) are connected with a spring (1-7) through a first rotating shaft (1-5); and the middle segment bending part of the first clamp body (1-6) and the second clamp body (1-8) is at an angle of 108 degrees. The sleeve ring (1-1) is made of stainless steel; the auxiliary rod body (1-3) is made of stainless steel; and the support placing clamp (1-17) is made of stainless steel. The main part of the clamping structure is made of stainless steel, and the action part of the clamping structure is made of medical rubber and is in an arc shape. The light sensor (1-15) obtains the information of the position of the blood vessel tissues on the sample fixing device (5) through the adjustment of the light sensor moving ring (1-14); then the slider controller (1-12) adjusts the slider (1-10); the support placing clamp (1-17) places the degradable support into the blood vessel tissues to support the structure of the blood vessel tissues; the clamping structure applies a pre-load to the corresponding part; and the cooperation of the parts plays an auxiliary role.

2. The system for laser assisted vessel tissue joining according to claim 1, wherein ​ 3. The system for laser assisted vessel tissue joining according to claim 1, wherein, ​ 4. The system for laser assisted vessel tissue joining according to claim 1, wherein, ​ 5. The system for laser assisted vessel tissue joining according to claim 1, wherein, The visual sensing device adopts a charge coupled device (CCD) camera (2-1, 2-2) to obtain image spatial information dimensions through a binocular stereo vision method, and the image information is transmitted to a processor to achieve the purpose of visual sensing connection trace tracking and adjust the scanning path of the blood vessel tissue.

6. The system for laser assisted vessel tissue joining according to claim 1, wherein, The temperature monitoring device comprises a temperature information collector (3) and a processor, and the signal is transmitted to the processor through the temperature information collector (3) and fed back to the laser connecting device to adjust to a suitable connecting temperature.

7. A device for assisting laser welding of vascular tissue, characterized in that The auxiliary device comprises a sleeve ring (1-1), an auxiliary rod body (1-3), a light sensor (1-15), a slider controller (1-12), a stent placing clamp (1-17) and a clamping structure. The sleeve ring (1-1) is located at the end of the auxiliary rod body (1-3). The auxiliary rod body (1-3) is located at the center of the device. The end of the auxiliary rod body (1-3) close to the sleeve ring (1-1) is provided with a section of annular thread. The light sensor (1-15) is connected with the auxiliary rod body (1-3) through a light sensor moving ring (1-14), and the light sensor (1-15) is fixed with the auxiliary rod body (1-3). The light sensor (1-15) is used for detecting the position of the blood vessel tissue, and the front and back changes of the position of the blood vessel tissue make the light signal change into an electric signal and transmit to the slider controller (1-12). The slider controller (1-12) is connected with the light sensor (1-15) to control the up and down movement of the slider (1-10). The stent placing clamp (1-17) is connected with the auxiliary rod body (1-3) through a control button (1-2) and a control line (1-4). The control button (1-2) and the control line (1-4) at the end of the auxiliary rod body (1-3) are controlled. The stent placing clamp (1-17) is made of stainless steel material, and the stent placing clamp (1-17) is fixed with the auxiliary rod body (1-3) and provided with an oval baffle which can adapt to the diameter of the blood vessel tissue. The two baffles are connected through a second rotating shaft (1-16). When the clamping structure is in action, the additional damage of the device to the blood vessel tissue is avoided. The clamping structure further comprises a first clamp body (1-6) and a second clamp body (1-8). The first clamp body (1-6) and the second clamp body (1-8) are connected with a spring (1-7) through a first rotating shaft (1-5). The middle segment bending angle of the first clamp body (1-6) and the second clamp body (1-8) is 108°.

8. The apparatus for assisting laser welding of vascular tissue according to claim 7, wherein, The sleeve ring (1-1) is made of stainless steel material; the auxiliary rod body (1-3) is made of stainless steel material; and the stent placing clamp (1-17) is made of stainless steel material.

9. The apparatus for assisting laser welding of vascular tissue according to claim 7, wherein, The main part of the clamping structure is made of stainless steel material, and the action part of the clamping structure is made of medical rubber material and is in an arc shape.

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