Auxiliary device for thrombectomy for cerebrovascular diseases

Abstract

The invention relates to the technical field of cerebrovascular disease thrombectomy, and discloses an auxiliary device for cerebrovascular disease thrombectomy, which comprises two sliding joint mechanisms and a catheter limiting mechanism. According to the auxiliary device for the thrombectomy operation of the cerebrovascular disease, by means of the relative mobility of the X axis, the Y axis and the Z axis, the catheter positioning capacity at any space position can be achieved, the application range of the device is widened, the shaft body design is adopted, the occupation degree of the operation space can be reduced, and in addition, due to the fact that the auxiliary device is placed on the ground and has the braking capacity at the joints, the operation efficiency is improved. And the working stability is relatively high.

Description

Technical Field

[0001] This invention relates to the field of thrombectomy technology for cerebrovascular diseases, specifically to an auxiliary device for thrombectomy surgery for cerebrovascular diseases. Background Technology

[0002] Cerebrovascular disease is a common and frequently occurring disease. Due to its high incidence, disability rate, and mortality rate, it brings enormous psychological pressure and a heavy economic burden to individuals, families, and society. Survivors often face a series of neuropsychiatric symptoms such as physical dysfunction, vision and hearing loss, cognitive decline, and emotional and personality changes, and also have to bear the heavy psychological burden caused by the physical illness. Currently, thrombectomy methods or surgical procedures include stent thrombectomy, catheter aspiration thrombectomy, or a combination of both. During catheter aspiration thrombectomy, the catheter is prone to swinging during insertion and cannot be properly restrained, causing the inserted catheter to swing and move extensively at the surgical site, resulting in inaccurate and unsafe thrombectomy. Therefore, a device is needed to solve the above-mentioned problems.

[0003] To this end, Chinese Patent Publication No. CN116531212A discloses an "Auxiliary Device for Thrombectomy in Cerebrovascular Diseases," whose main structure includes a first support adjustment device, an auxiliary limiting device, a pressure sensor, and a second support adjustment device, which are symmetrically distributed. This auxiliary device for thrombectomy in cerebrovascular diseases, by setting the first and second support adjustment devices and the auxiliary limiting device, allows for adjustment of the height and position of the symmetrically arranged auxiliary limiting device. A first electric push rod drives two limiting rings and a first sliding adjustment plate to slide along the first limiting sliding groove, allowing the two limiting rings to contact each other. These contacting limiting rings then cover the surgical position, thus limiting the catheter used for thrombectomy and preventing large-scale movement and swaying of the catheter during the thrombectomy process.

[0004] A closer look at the aforementioned thrombectomy surgery auxiliary device reveals that its symmetrically distributed movable adjustment track plates, secured by a fixed mounting plate, allow for fixed installation on the operating table in the operating room. Activating the second electric push rod pulls the second sliding adjustment plate and support base along the interior of the second limiting sliding groove, thereby adjusting and controlling the positions of the first support adjustment device, the second support adjustment device, and the auxiliary limiting device. This makes the device convenient to adjust and control during use. However, in actual surgery, surgeons have very high requirements for surgical space. The movable adjustment track plates and other components in the aforementioned thrombectomy surgery auxiliary device are relatively large, occupying considerable surgical space and hindering the surgeon's operation, thus having a significant negative impact.

[0005] For example, Chinese patent publication number CN104922778B discloses "A Multi-Diameter Medical Catheter Fixing Patch," whose main structure includes an adhesive layer, a fixing layer, and a fixing block. The fixing block is fixedly disposed on the fixing layer, and the adhesive layer is disposed on the side of the fixing layer opposite to the fixing block. A fixing hole with an opening is provided at one end of the fixing block adjacent to the fixing layer. A medical catheter passes through the fixing hole and is fixed within the medical catheter fixing patch. A through hole communicating with the fixing hole is provided at the top of the fixing block. A fixing shaft is disposed within the through hole, and the axis of the fixing shaft is parallel to the axis of the fixing hole. An adjusting block is rotatably fitted onto the fixing shaft, and a through hole for the fixing shaft to pass through is provided on the adjusting block. The adjusting block includes two relatively parallel end faces and four arc surfaces. The through hole penetrates the two end faces, and the distances between the through hole and the four arc surfaces are unequal. The aforementioned medical catheter fixing patch can achieve the fixation of medical catheters of different sizes by rotating and adjusting the adjusting block.

[0006] A closer look at the aforementioned multi-diameter medical catheter fixation patch reveals that during operation, it adheres to the patient's skin surface through an adhesive layer. Because the human body has a high capacity for displacement within the skin layer, it is prone to shifting, resulting in poor stability after fixation. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides an auxiliary device for thrombectomy surgery in cerebrovascular diseases. Utilizing the relative mobility of the X, Y, and Z axes, it enables catheter positioning at any spatial location, thereby expanding the device's application range. Furthermore, its axial design minimizes its impact on surgical space. In addition, the device's ground placement and braking capabilities at the joints ensure high operational stability, thus solving the aforementioned technical problems.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an auxiliary device for thrombectomy surgery in cerebrovascular disease, comprising a rubber base, a Y-axis rod fixedly installed on the top of the rubber base, a first limiting plate fixedly installed on the top of the Y-axis rod, a Z-axis rod horizontally located on one side of the Y-axis rod, a second limiting plate fixedly installed on one end of the Z-axis rod, an X-axis rod horizontally located on one side of the Z-axis rod, a third limiting plate fixedly installed on one end of the X-axis rod, and axial grooves provided at the edges of the Y-axis rod, Z-axis rod, and X-axis rod; and further comprising two sliding joint mechanisms, each having internally provided for axial sliding along the Y-axis rod and Z-axis rod. The device comprises a movable first sliding sleeve, a first rubber sheet located inside the first sliding sleeve and subjected to hydraulic pressure on the periphery to achieve compression braking with the Y-axis and Z-axis rods, and a first arc-shaped cavity located around the first rubber sheet; and a conduit limiting mechanism, which internally includes a second sliding sleeve capable of sliding along the X-axis rod, a second rubber sheet located inside the second sliding sleeve and subjected to hydraulic pressure on the periphery to achieve compression braking with the X-axis rod, a second arc-shaped cavity located around the second rubber sheet, a conduit limiting ring located directly below the second sliding sleeve, and an annular rubber sheet located inside the conduit limiting ring and subjected to liquid pressure on the periphery to create a wrapping and clamping effect on the conduit.

[0009] Preferably, the sliding joint mechanism includes a first sliding sleeve, the first sliding sleeve having a first sliding hole inside which it can be fitted around the Y-axis rod and the Z-axis rod and slide axially along the Y-axis rod and the Z-axis rod. The first sliding sleeve has a first protruding slider at two symmetrical edges of the first sliding hole, which can slide along the axial sliding groove. The first sliding sleeve has a first arc-shaped embedding cavity at another edge. The first sliding sleeve has a first rubber sheet embedded in the first arc-shaped embedding cavity in a closed manner. The first sliding sleeve has a first arc-shaped cavity around the first rubber sheet. The first sliding sleeve has an integral first docking pipe at the center of the circumferential side of the first sliding sleeve. The first docking pipe has a first liquid flow hole inside which communicates with the first arc-shaped cavity.

[0010] Preferably, the first rubber sheet is made of a material with elasticity and wear resistance.

[0011] Preferably, the catheter limiting mechanism includes a second sliding sleeve. The second sliding sleeve has a second sliding hole inside, capable of fitting around the outer periphery of the X-axis rod and sliding axially along the X-axis. The second sliding sleeve has second protruding sliders at two symmetrical edges of the second sliding hole, capable of sliding along axial grooves. The second sliding sleeve has second arc-shaped embedding cavities at two other edges. A second rubber sheet is enclosedly embedded inside the second arc-shaped embedding cavity. The second sliding sleeve has a second arc-shaped cavity around the outer periphery of the second rubber sheet. The bottom side of the second sliding sleeve is provided with… The longitudinal connecting pipe has an integral structure. At the bottom end of the longitudinal connecting pipe, a conduit limiting ring with an integral structure is provided. The conduit limiting ring has a conduit insertion hole at its center. Inside the conduit insertion hole, the conduit limiting ring has an annular hollow cavity located on the outer periphery of the conduit insertion hole. At the junction of the conduit limiting ring and the annular hollow cavity of the conduit insertion hole, a ring-shaped rubber sheet is embedded in a closed manner. The interior of the longitudinal connecting pipe has a longitudinal liquid flow hole connecting the annular hollow cavity and the second arc-shaped cavity. The middle of the circumferential side of the longitudinal connecting pipe has a second docking pipe connecting the longitudinal liquid flow hole.

[0012] Preferably, both the second rubber sheet and the annular rubber sheet are made of materials with elasticity and wear resistance, and the elastic strength of the second rubber sheet is less than that of the annular rubber sheet.

[0013] Preferably, it also includes a foot-operated pressure mechanism, which has a longitudinal hollow shell, a piston located inside the longitudinal hollow shell and displaced downward when subjected to pressure, a helical spring that prevents the piston from moving downward, and a foot pedal that can drive the piston to displace downward when subjected to pressure.

[0014] Preferably, the foot-operated pressure mechanism includes a longitudinal hollow shell with a support plate installed at the bottom. The interior of the longitudinal hollow shell is provided with a longitudinal movable cavity. The longitudinal hollow shell is provided with a liquid limiting flow cavity at the top of the longitudinal movable cavity. A piston body capable of moving axially along the longitudinal movable cavity is placed inside the longitudinal hollow shell and located in the longitudinal movable cavity. A helical spring in a compressed state is placed at the bottom of the piston body. Buffer solution is filled above the piston body. A telescopic rod penetrating the top structure of the longitudinal hollow shell is installed at the center of the top of the piston body. A foot pedal is fixedly installed at the top of the telescopic rod. A No. 3 docking pipe communicating with the liquid limiting flow cavity is provided on the side of the longitudinal hollow shell.

[0015] Preferably, the No. 3 docking pipe is connected to the two No. 1 docking pipes and the No. 2 docking pipe through a parallel pipe mechanism.

[0016] Preferably, the amount of the buffer solution is sufficient to ensure that the elastic pressure exerted by the helical spring on the buffer solution when the helical spring is not subjected to human force, so that the first rubber sheet, the second rubber sheet, and the annular rubber sheet are in a stable braking state.

[0017] Preferably, the parallel piping mechanism includes a hollow valve, the hollow valve having a transverse hollow flow cavity inside, a No. 4 docking pipe connected to the transverse hollow flow cavity being disposed at the center of one end face of the hollow valve, and three No. 5 docking pipes connected to the transverse hollow flow cavity being disposed at the center of the other end face of the hollow valve, the three No. 5 docking pipes being arranged in a circular array about the axis of the hollow valve, the No. 4 docking pipe and the No. 3 docking pipe being connected to each other via a No. 1 flexible hose, and the three No. 5 docking pipes being connected to two No. 1 docking pipes and one No. 2 docking pipe respectively via a No. 2 flexible hose.

[0018] Compared with the prior art, the present invention provides an auxiliary device for thrombectomy surgery in cerebrovascular diseases, which has the following beneficial effects:

[0019] This auxiliary device is used in thrombectomy surgery for cerebrovascular diseases.

[0020] 1. Utilizing the relative mobility of the X, Y, and Z axes, it is possible to position the catheter at any spatial location, thereby increasing the application range of the equipment. Moreover, the axial design reduces the amount of space it occupies in the operating room. In addition, due to the braking ability at the ground and joints, it has high working stability.

[0021] 2. By setting up a sliding joint mechanism, when no external force is applied to the buffer solution, the friction braking of the first rubber sheet on the Y-axis and Z-axis rods is insufficient to keep the component stable under the elasticity of the first rubber sheet itself. At this time, the doctor can adjust the position independently according to the actual situation, thereby realizing the ability to adjust the position of the inserted catheter. Once an external force is applied to the buffer solution, the buffer solution will increase the pressure of the first rubber sheet on the Y-axis and Z-axis rods, thereby increasing the friction between the contact surfaces and realizing the fixation ability during operation.

[0022] 3. By setting a conduit limiting mechanism, the No. 2 rubber sheet can achieve position adjustment and spatial fixation capabilities. The conduit can be inserted into the conduit insertion hole. Under the influence of liquid, the annular rubber sheet shrinks inward. The inner annular surface of the annular rubber sheet can wrap around and clamp the conduit, thereby fixing the conduit. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present invention without the parallel pipe mechanism installed;

[0024] Figure 2 for Figure 1A three-dimensional cross-sectional view from the first perspective;

[0025] Figure 3 for Figure 1 A three-dimensional cross-section from a second perspective;

[0026] Figure 4 This is a three-dimensional cross-sectional view of the sliding joint mechanism in this invention;

[0027] Figure 5 This is a three-dimensional cross-sectional view of the catheter limiting mechanism in this invention;

[0028] Figure 6 This is a three-dimensional cross-sectional view of the foot-operated pressure application mechanism in this invention;

[0029] Figure 7 This is a perspective view of the parallel pipeline mechanism in this invention;

[0030] Figure 8 This is a three-dimensional cross-sectional view of the parallel pipeline mechanism in this invention.

[0031] The components include: 1. Rubber base; 2. Y-axis rod; 3. No. 1 limiting plate; 4. Z-axis rod; 5. No. 2 limiting plate; 6. X-axis rod; 7. No. 3 limiting plate; 8. Axial groove; 9. Sliding joint mechanism; 91. No. 1 sliding sleeve; 92. No. 1 sliding hole; 93. No. 1 raised slider; 94. No. 1 arc-shaped embedded cavity; 95. No. 1 arc-shaped cavity; 96. No. 1 connecting pipe; 97. No. 1 liquid flow hole; 98. No. 1 rubber sheet; 10. Conduit limiting mechanism; 101. No. 2 sliding sleeve; 102. No. 2 sliding hole; 103. No. 2 raised slider; 104. No. 2 arc-shaped embedded cavity; 105. No. 2 arc-shaped cavity; 106. No. 2 rubber sheet; 107. Longitudinal connecting pipe; 08. Guide tube limiting ring; 109. Guide tube insertion hole; 1010. Annular hollow cavity; 1011. Annular rubber sheet; 1012. Longitudinal liquid flow hole; 1013. No. 2 docking pipe; 11. Foot-operated pressure mechanism; 111. Longitudinal hollow shell; 112. Support plate; 113. Longitudinal movable cavity; 114. Liquid limiting flow cavity; 115. No. 3 docking pipe; 116. Piston body; 117. Helical spring; 118. Telescopic rod; 119. Foot pedal; 12. Parallel pipe mechanism; 121. Hollow valve; 122. Transverse hollow flow cavity; 123. No. 4 docking pipe; 124. No. 5 docking pipe; 125. No. 1 hose; 126. No. 2 hose. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figure 1 , Figure 2 and Figure 3 An auxiliary device for thrombectomy in cerebrovascular disease includes a rubber base 1, a Y-axis rod 2 fixedly installed on the top of the rubber base 1, a first limiting plate 3 fixedly installed on the top of the Y-axis rod 2, a Z-axis rod 4 horizontally located on one side of the Y-axis rod 2, a second limiting plate 5 fixedly installed on one end of the Z-axis rod 4, an X-axis rod 6 horizontally located on one side of the Z-axis rod 4, a third limiting plate 7 fixedly installed on one end of the X-axis rod 6, and axial grooves 8 provided at the edges of the Y-axis rod 2, Z-axis rod 4, and X-axis rod 6. By utilizing the mutual movement between the X-axis rod 6, Y-axis rod 2, and Z-axis rod 4, a position adjustment base in three-dimensional space at a fixed angle can be achieved, thereby enabling the device to be used in a wide range of applications.

[0034] To achieve nested position adjustment and fixation during operation, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 and Figure 4 Two sliding joint mechanisms 9 are required. Internally, there is a first sliding sleeve 91 that can slide along the Y-axis of rod 2 and the Z-axis of rod 4; a first rubber sheet 98 located inside the first sliding sleeve 91 and subjected to hydraulic pressure on its periphery, which compresses and brakes the Y-axis rod 2 and the Z-axis rod 4; and a first arc-shaped cavity 95 located around the first rubber sheet 98. When no external force is applied to the buffer solution, the frictional braking of the first rubber sheet 98 against the Y-axis rod 2 and the Z-axis rod 4 is insufficient to keep the component stable due to its own elasticity. In this case, the doctor can adjust the position independently according to the actual situation, thus achieving the ability to adjust the position of the inserted catheter. However, once an external force is applied to the buffer solution, the buffer solution increases the pressure of the first rubber sheet 98 on the Y-axis rod 2 and the Z-axis rod 4, thereby increasing the friction between the contact surfaces and achieving the fixation ability during operation.

[0035] For details regarding the specific structure of the sliding joint mechanism 9, please refer to [link / reference]. Figure 4The system includes a first sliding sleeve 91, which has a first sliding hole 92 inside that can be fitted around the Y-axis rod 2 and the Z-axis rod 4 and slide along the Y-axis rod 2 and the Z-axis rod 4. The first sliding sleeve 91 has a first protruding slider 93 at two symmetrical edges of the first sliding hole 92 that can slide along the axial sliding groove 8. The first sliding sleeve 91 has a first arc-shaped embedded cavity 94 at another edge. The first sliding sleeve 91 has a first rubber sheet 98 enclosedly embedded in the first arc-shaped embedded cavity 94. The first rubber sheet 98 is made of a material with elasticity and wear resistance. The first sliding sleeve 91 has a first arc-shaped cavity 95 around the first rubber sheet 98. The first connecting pipe 96 with an integral structure is provided in the middle of the circumferential side of the first sliding sleeve 91. The first connecting pipe 96 has a first liquid flow hole 97 that connects to the first arc-shaped cavity 95.

[0036] To achieve mobile catheter fixation capability, please refer to... Figure 1 , Figure 2 , Figure 3 and Figure 5 A conduit limiting mechanism 10 is required, which includes a second sliding sleeve 101 that can slide along the X-axis of the rod 6, a second rubber sheet 106 located inside the second sliding sleeve 101 and subjected to hydraulic pressure to achieve compression braking with the X-axis rod 6, a second arc-shaped cavity 105 located around the second rubber sheet 106, a conduit limiting ring 108 located directly below the second sliding sleeve 101, and an annular rubber sheet 1011 located inside the conduit limiting ring 108 and subjected to liquid pressure to create a wrapping and clamping effect on the conduit. Similarly, the second rubber sheet 106 can achieve position adjustment and spatial fixation capabilities, and the conduit can be inserted into the conduit insertion hole 109. Under the influence of liquid, the annular rubber sheet 1011 shrinks inward, and the inner annular surface of the annular rubber sheet 1011 can wrap around and clamp the conduit, thereby fixing the conduit.

[0037] For details regarding the specific structure of the catheter limiting mechanism 10, please refer to [link / reference]. Figure 5The system includes a second sliding sleeve 101, which has a second sliding hole 102 inside, capable of being fitted onto the outer periphery of the X-axis rod 6 and sliding along the X-axis of the rod 6. The second sliding sleeve 101 has a second protruding slider 103 located at two symmetrical edges of the second sliding hole 102, capable of sliding along an axial sliding groove 8. The second sliding sleeve 101 also has a second arc-shaped embedding cavity 104 located at two other edges. A second rubber sheet 106 is embedded in the closed cavity 104. A second arc-shaped cavity 105 is provided around the second rubber sheet 106 in the second sliding sleeve 101. A longitudinal connecting tube 107 with an integral structure is provided on the bottom side of the second sliding sleeve 101. A catheter limiting ring 108 with an integral structure is provided at the bottom end of the longitudinal connecting tube 107. A catheter insertion hole 109 is provided at the center of the catheter limiting ring 108. The tube insertion hole 109 has an annular hollow cavity 1010 located around the center of the insertion hole 109. A conduit limiting ring 108 has a closed-loop annular rubber sheet 1011 embedded at the junction of the annular hollow cavity 1010 and the tube insertion hole 109. To achieve effective clamping of the conduit, and considering the connectivity of the buffer solution, both the second rubber sheet 106 and the annular rubber sheet 1011 must be made of materials with elasticity and wear resistance. The elastic strength of the film 106 is less than that of the annular rubber sheet 1011, so as to reduce the force of the buffer solution on the annular rubber sheet 1011 and at the same time reduce the compressive strength of the annular rubber sheet 1011 on the conduit. The interior of the longitudinal connecting tube 107 is provided with a longitudinal liquid flow hole 1012 that connects the annular hollow cavity 1010 and the second arc-shaped cavity 105. The middle of the circumferential side of the longitudinal connecting tube 107 is provided with a second docking pipe 1013 that connects to the longitudinal liquid flow hole 1012.

[0038] To achieve foot-operated hydraulic control, thereby freeing the doctor's hands and enabling simple and quick control, please refer to [link / reference needed]. Figure 1 , Figure 2 , Figure 3 and Figure 6A foot-operated pressure mechanism 11 is required, which includes a longitudinal hollow shell 111, a piston 116 located inside the longitudinal hollow shell 111 and displaced downwards under pressure, a helical spring 117 that prevents the piston 116 from moving downwards, and a foot pedal 119 that can drive the piston 116 to move downwards under pressure. When no foot pedal is used, the piston 116 moves upwards under the elastic action of the helical spring 117. The buffer solution above the piston 116 will exert a force on the buffer solution under this elastic pressure, which can keep the device in a stable working state. When the doctor uses one foot to step on the foot pedal 119, the helical spring 117 will be compressed, the pressure of the buffer solution will decrease, and the spatial position of the device can be adjusted.

[0039] For details regarding the specific structure of the foot-operated pressure mechanism 11, please refer to [link / reference]. Figure 6 The device includes a longitudinally hollow outer shell 111 with a support plate 112 mounted on its bottom. A longitudinally movable cavity 113 is provided inside the longitudinally hollow outer shell 111. A liquid-limiting flow cavity 114 is provided at the top of the longitudinally movable cavity 113. A piston body 116 capable of moving axially along the longitudinally movable cavity 113 is placed inside the longitudinally hollow outer shell 111 within the longitudinally movable cavity 113. A compressed helical spring 117 is placed at the bottom of the piston body 116. A buffer is filled above the piston body 116. The piston body 116 has a telescopic rod 118 installed at the top center of its top, which passes through the top structure of the longitudinal hollow shell 111. A foot pedal 119 is fixedly installed at the top of the telescopic rod 118. The side of the longitudinal hollow shell 111 is provided with a third docking pipe 115 that connects to the liquid limiting flow cavity 114. In order to achieve parallel liquid control capability and realize synchronous adjustment capability of joint parts, the third docking pipe 115 needs to be docked with two first docking pipes 96 and one second docking pipe 1013 through a parallel pipe mechanism 12.

[0040] In order to have sufficient buffer solution to maintain the linkage of the operation, the amount of buffer solution needs to be sufficient to ensure that when the helical spring 117 is not subjected to human force, the elastic pressure of the helical spring 117 on the buffer solution keeps the first rubber sheet 98, the second rubber sheet 106 and the annular rubber sheet 1011 in a stable braking state.

[0041] For details regarding the specific structure of the parallel pipe mechanism 12, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 8The system includes a hollow valve 121, which has a transverse hollow flow cavity 122 inside. A fourth docking pipe 123 connected to the transverse hollow flow cavity 122 is provided at the center of one end face of the hollow valve 121. Three fifth docking pipes 124 connected to the transverse hollow flow cavity 122 are provided at the center of the other end face of the hollow valve 121. The three fifth docking pipes 124 are arranged in a ring array about the axis of the hollow valve 121. The fourth docking pipe 123 and the third docking pipe 115 are connected by a first flexible hose 125. The three fifth docking pipes 124 are connected to two first docking pipes 96 and one second docking pipe 1013 respectively through a second flexible hose 126.

[0042] The specific working principle of the present invention is as follows: First, a rubber base 1 is placed on one side of the operating table. Then, the doctor inserts an external catheter into the patient. After the external catheter is inserted, the doctor needs to step on the foot pedal 119. At this time, the spiral spring 117 will be compressed, and the pressure of the buffer solution will decrease.

[0043] Under the self-elastic action of rubber sheet 98 and rubber sheet 106, the friction braking of rubber sheet 98 on the Y-axis rod 2 and Z-axis rod 4 is insufficient to keep the components stable. At this time, the doctor can adjust the position independently according to the actual situation, thereby realizing the ability to adjust the position of the inserted catheter. At the same time, when it is moved to the appropriate position, the outer periphery of the external catheter is inserted into the annular rubber sheet 1011.

[0044] When the doctor releases the foot pedal 119, the piston 116 moves upward under the elastic action of the coil spring 117. The buffer solution above the piston 116 will exert a force on the buffer solution under this elastic pressure.

[0045] The buffer solution increases the pressure of the first rubber sheet 98 on the Y-axis rod 2 and the Z-axis rod 4, thereby increasing the friction between the contact surfaces. Similarly, the second rubber sheet 106 can achieve position adjustment and spatial fixation. The conduit can be inserted into the conduit insertion hole 109. Under the influence of the liquid, the annular rubber sheet 1011 shrinks inward. The inner annular surface of the annular rubber sheet 1011 can wrap around and clamp the outer periphery of the conduit, thereby fixing the conduit.

[0046] After the work is completed, the doctor can reset the components of the device using the principles described above.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for thrombectomy in cerebrovascular disease, comprising a rubber base (1), a Y-axis rod (2) fixedly installed on the top of the rubber base (1), a first limiting plate (3) fixedly installed on the top of the Y-axis rod (2), a Z-axis rod (4) horizontally located on one side of the Y-axis rod (2), a second limiting plate (5) fixedly installed on one end of the Z-axis rod (4), an X-axis rod (6) horizontally located on one side of the Z-axis rod (4), a third limiting plate (7) fixedly installed on one end of the X-axis rod (6), and axial grooves (8) provided at the edges of the Y-axis rod (2), the Z-axis rod (4), and the X-axis rod (6), characterized in that: It also includes, Two sliding joint mechanisms (9) are provided inside, including a first sliding sleeve (91) that can slide along the Y-axis rod (2) and the Z-axis rod (4), a first rubber sheet (98) located inside the first sliding sleeve (91) and subjected to hydraulic pressure on the periphery to achieve compression braking with the Y-axis rod (2) and the Z-axis rod (4), and a first arc-shaped cavity (95) located on the periphery of the first rubber sheet (98); And a conduit limiting mechanism (10), which is provided with a second sliding sleeve (101) that can slide along the X-axis rod (6), a second rubber sheet (106) located inside the second sliding sleeve (101) and subjected to hydraulic pressure on the periphery to achieve compression braking with the X-axis rod (6), a second arc-shaped cavity (105) located on the periphery of the second rubber sheet (106), a conduit limiting ring (108) located directly below the second sliding sleeve (101), and an annular rubber sheet (1011) provided inside the conduit limiting ring (108) and subjected to liquid pressure on the periphery to generate a wrapping and clamping effect on the conduit.

2. The auxiliary device for thrombectomy surgery in cerebrovascular disease according to claim 1, characterized in that: The sliding joint mechanism (9) includes a first sliding sleeve (91). The first sliding sleeve (91) has a first sliding hole (92) inside, which can be fitted around the Y-axis rod (2) and the Z-axis rod (4) and can slide along the Y-axis rod (2) and the Z-axis rod (4). The first sliding sleeve (91) has a first protruding slider (93) at two symmetrical edges of the first sliding hole (92), which can slide along the axial sliding groove (8). The first sliding sleeve (91) has a first protruding slider (93) at another edge. An arc-shaped embedded cavity (94) is provided. A first sliding sleeve (91) has a first rubber sheet (98) embedded in the first arc-shaped embedded cavity (94) in a closed manner. An arc-shaped cavity (95) is provided on the periphery of the first rubber sheet (98) of the first sliding sleeve (91). An integral first docking pipe (96) is provided in the middle of the circumferential side of the first sliding sleeve (91). A first liquid flow hole (97) communicating with the first arc-shaped cavity (95) is provided inside the first docking pipe (96).

3. The auxiliary device for thrombectomy surgery in cerebrovascular disease according to claim 2, characterized in that: The first rubber sheet (98) is made of a material with elasticity and wear resistance.

4. The auxiliary device for thrombectomy surgery in cerebrovascular disease according to claim 1, characterized in that: The catheter limiting mechanism (10) includes a second sliding sleeve (101). The second sliding sleeve (101) has a second sliding hole (102) inside, which can be fitted around the X-axis rod (6) and slide along the X-axis rod (6). The second sliding sleeve (101) has a second protruding slider (103) at two symmetrical edges of the second sliding hole (102), which can slide along the axial sliding groove (8). The second sliding sleeve (101) has a second arc-shaped embedding cavity (104) at two other edges. The second sliding sleeve (101) has a second rubber sheet (106) embedded in the second arc-shaped embedding cavity (104) in a closed manner. The second sliding sleeve (101) has a second arc-shaped cavity (105) around the second rubber sheet (106). The second sliding sleeve (101) has a longitudinal connection of an integral structure at the bottom side of the second sliding sleeve (101). The longitudinal connecting pipe (107) has a conduit limiting ring (108) integrally formed with it at its bottom end. The conduit limiting ring (108) has a conduit insertion hole (109) at its center. The conduit limiting ring (108) has an annular hollow cavity (1010) located on the periphery of the middle part of the conduit insertion hole (109) inside the conduit insertion hole (109). The conduit limiting ring (108) has a closed-loop embedded annular rubber sheet (1011) at the junction of the annular hollow cavity (1010) and the conduit insertion hole (109). The longitudinal connecting pipe (107) has a longitudinal liquid flow hole (1012) connecting the annular hollow cavity (1010) and the second arc-shaped cavity (105) inside. The second docking pipe (1013) connecting the longitudinal liquid flow hole (1012) is provided in the middle of the circumferential side of the longitudinal connecting pipe (107).

5. The auxiliary device for thrombectomy surgery in cerebrovascular disease according to claim 4, characterized in that: Both the second rubber sheet (106) and the annular rubber sheet (1011) are made of materials with elasticity and wear resistance, and the elastic strength of the second rubber sheet (106) is less than that of the annular rubber sheet (1011).

6. An auxiliary device for thrombectomy surgery for cerebrovascular diseases according to any one of claims 1-5, characterized in that: It also includes a foot-operated pressure mechanism (11), which has a longitudinal hollow shell (111), a piston (116) located inside the longitudinal hollow shell (111) and displaced downward after being subjected to pressure, a helical spring (117) that prevents the piston (116) from moving downward, and a foot pedal (119) that can drive the piston (116) to move downward after being subjected to pressure.

7. An auxiliary device for thrombectomy surgery in cerebrovascular disease according to claim 6, characterized in that: The foot-operated pressure mechanism (11) includes a longitudinal hollow shell (111) with a support plate (112) mounted on its bottom. A longitudinal movable cavity (113) is provided inside the longitudinal hollow shell (111). A liquid-limiting flow cavity (114) is provided at the top of the longitudinal movable cavity (113) within the longitudinal hollow shell (111). A piston (11) capable of moving axially along the longitudinal movable cavity (113) is placed inside the longitudinal hollow shell (111) within the longitudinal movable cavity (113). 6) A compressed helical spring (117) is placed at the bottom of the piston body (116), and buffer solution is filled above the piston body (116). A telescopic rod (118) that penetrates the top structure of the longitudinal hollow shell (111) is installed at the center of the top of the piston body (116). A foot pedal (119) is fixedly installed at the top of the telescopic rod (118). A third docking pipe (115) that connects to the liquid limiting flow cavity (114) is provided on the side of the longitudinal hollow shell (111).

8. An auxiliary device for thrombectomy surgery in cerebrovascular disease according to claim 7, characterized in that: The No. 3 docking pipe (115) is connected to two No. 1 docking pipes (96) and one No. 2 docking pipe (1013) via a parallel pipe mechanism (12).

9. An auxiliary device for thrombectomy surgery in cerebrovascular disease according to claim 8, characterized in that: The amount of buffer solution is sufficient to ensure that when the helical spring (117) is not subjected to human force, the elastic pressure exerted by the helical spring (117) on the buffer solution keeps the first rubber sheet (98), the second rubber sheet (106), and the annular rubber sheet (1011) in a stable braking state.

10. An auxiliary device for thrombectomy surgery for cerebrovascular diseases according to claim 9, characterized in that: The parallel pipeline mechanism (12) includes a hollow valve (121), the hollow valve (121) has a transverse hollow flow cavity (122) inside, a fourth docking pipe (123) connecting the transverse hollow flow cavity (122) is provided at the center of one end face of the hollow valve (121), and three fifth docking pipes (124) connecting the transverse hollow flow cavity (122) are provided at the center of the other end face of the hollow valve (121), and the three fifth docking pipes (124) are arranged in a ring array about the axis of the hollow valve (121). The fourth docking pipe (123) and the third docking pipe (115) are connected by a first hose (125), and the three fifth docking pipes (124) are connected to two first docking pipes (96) and one second docking pipe (1013) respectively by a second hose (126).

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