Auxiliary device for thrombectomy for cerebrovascular diseases

Abstract

The invention relates to the field of medical instruments, in particular to a cerebrovascular disease thrombectomy operation auxiliary device which comprises a treatment bed, a head supporting assembly, a clamping assembly and an angiographic catheter bearing assembly. A headrest and a supporting rod of the head supporting assembly can ascend and descend and move in linkage with the angiographic catheter bearing assembly to ascend and descend through the lever assembly, and a height limiting device is arranged. A supporting arm and a rotating arm of the angiographic catheter bearing assembly are connected through a rotating buckle, the angle is flexible, and a bearing part and a containing part can control a guide wire to be fixed and released. The clamping assembly converts movement of the head supporting assembly into horizontal movement through the transmission assembly, and head clamping is achieved. All the components of the device cooperate, the head of a patient can be fixed, a catheter can be stabilized, the success rate and safety of an operation are improved, the guide wire can be conveniently controlled, the labor intensity of medical care is relieved, the guide wire is prevented from being polluted, and effective assistance is provided for cerebrovascular disease thrombectomy.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to an auxiliary device for thrombectomy for cerebrovascular disease. Background Art

[0002] Thrombectomy for cerebrovascular disease is a highly difficult and high-risk medical procedure. Even the slightest mistake during the operation may lead to serious consequences and have a significant impact on the patient's life and health.

[0003] During the operation, the femoral artery in the groin area is usually punctured. After local anesthesia, the puncture needle is inserted into the femoral artery, a guide wire is placed along the needle, an arterial sheath is placed along the guide wire, and an angiography catheter is inserted through the arterial sheath. The catheter is then delivered to the neck or intracranial blood vessels under X-ray fluoroscopy. After that, the thrombectomy stent delivery system reaches the thrombus through the angiography catheter, and the stent is released. After it is embedded in the thrombus and adheres to the blood vessel wall for several minutes, the stent and delivery system are slowly withdrawn to remove the thrombus. The entire process is carefully operated under X-ray fluoroscopy to prevent damage to the blood vessel wall.

[0004] It can be seen that the catheter needs to maintain a high degree of stability and precise positioning in the blood vessel. The internal environment of the blood vessel is complex, and the impact of blood flow and the tortuosity, elasticity and other characteristics of the blood vessel itself will interfere with the catheter. Without the support of the stent, it is difficult for the catheter itself to maintain an accurate and stable position. In the process of releasing the stent, waiting for the stent to fit the thrombus, and withdrawing the stent and the delivery system, it is very easy for the catheter to shift and shake. This may not only lead to inaccurate stent release position and inability to effectively capture the thrombus, but also may accidentally touch and damage the blood vessel wall due to the instability of the catheter, causing serious complications such as vascular rupture and dissection. Given that the operation takes a long time, if the medical staff only rely on holding the catheter, the medical staff are very likely to become fatigued due to maintaining a fixed posture for a long time, and their energy will also be greatly consumed, which will undoubtedly have an adverse effect on the effect of the operation. For example, the catheter position may deviate due to slight tremors in the hands or distraction, thereby affecting the accuracy and success rate of thrombectomy, and may even cause serious complications such as vascular damage, endangering the patient's life safety.

[0005] It is worth noting that the stability of the patient's head is one of the key factors for the success of the operation. Because even a slight movement of the head may cause the surgical instruments to deviate from the target blood vessel, affecting the accuracy and effect of thrombectomy, and may even damage the blood vessels or surrounding tissues, increasing the chance of surgical complications. At the same time, the patient's comfort during the operation is also crucial. Head instability may cause discomfort to the patient and affect the smooth progress of the operation. Therefore, it is extremely important whether the head and catheter are stable during cerebrovascular disease thrombectomy. Summary of the invention

[0006] The purpose of the present invention is to overcome the problem that the patient's head cannot be fixed and the catheter is easily displaced during cerebrovascular disease thrombectomy surgery.

[0007] In order to achieve the above-mentioned purpose, the technical ideas adopted by the present invention to solve the technical problems are as follows: First, by setting a fixing with a lifting slot and a rectangular slide on one side of the treatment bed, a basic structural frame is constructed to provide support and guidance for the installation and movement of other components.

[0008] For the head support assembly, the support rod at the bottom of the headrest is used to achieve lifting movement under the cooperation of the lifting groove and the central axis of the fixing part. With the help of the connection between the limit block and the joystick, the pressure change caused by placing the head on the headrest is converted into the rotation of the joystick, and then linked with the angiographic catheter supporting assembly, so that the lifting rod of the angiographic catheter supporting assembly can be raised and lowered according to the change of head position, and the height of the lifting rod is accurately controlled by the height limit device to meet the needs of different surgical operations.

[0009] In terms of the angiographic catheter support component, a unique support arm structure is designed. The combination of the support arm, rotating arm and rotating buckle ensures the stability of the support and realizes flexible angle adjustment. The annular structure of the support part and the support block connected to the damping shaft can stably support the catheter and make subtle angle adjustments. The threaded cooperation between the storage part and the annular piston and the design of the related air holes, airbags and annular tray can effectively control the fixation and release of the guide wire, making it easier to handle the guide wire during surgical operations.

[0010] For the clamping assembly, a transmission assembly is used to convert the up and down movement of the support rod in the head support assembly into horizontal movement. Through the sequential connection and transmission of the crossbar, the first transmission rod, the second transmission rod, the rotating shaft and the fan gear, the fan gear drives the meshing rack to slide horizontally, so that the clamping assembly with a C-shaped frame structure moves left and right on the rectangular slideway to achieve stable clamping of the patient's head, ensure that the patient's head position is relatively fixed during the operation, and create favorable conditions for precise operation. The various components of the entire device work closely together and work together, from head support, catheter assistance to head clamping, to provide efficient, accurate and stable auxiliary support for cerebrovascular disease thrombectomy surgery in all aspects, and improve the success rate and safety of the operation.

[0011] In order to achieve the above object, the technical solution adopted by the present invention to solve the technical problem is: Design an auxiliary device for thrombectomy for cerebrovascular disease. The specific scheme is as follows: An auxiliary device for thrombectomy for cerebrovascular disease comprises a treatment bed, wherein a liftable head support is arranged on one short side of the treatment bed, and two clamping assemblies are slidably arranged on both sides of the head support for fixing the patient's head, wherein a transmission assembly is hinged on the head support, and the transmission assembly is clamped with the bottom of the clamping assembly; an angiographic catheter supporting assembly is arranged on one long side of the treatment bed, a lever assembly is abutted against the bottom of the angiographic catheter supporting assembly, and the other end of the lever assembly abuts against the bottom of the head support, and the head support descends to drive the two clamping assemblies closer together, while driving the angiographic catheter supporting assembly to be lifted to the puncture point of the thrombectomy.

[0012] Furthermore, the bottom of the lifting rod is abutted against one end of the lever assembly; the support arm has one end fixedly connected to the top of the lifting rod and the other end is provided with a sliding groove; the rotating arm has one end provided with a rotating buckle and the rotating buckle is arranged in the sliding groove and clamped therewith, and the other end is provided with a supporting part and a storage part clamped with the supporting part, and the storage part is used to place the guide wire.

[0013] Furthermore, a height limiting device including spring steel, a limiting block and a limiting hole is provided on the lifting rod, and the height locking and unlocking of the lifting rod is achieved through the deformation of the spring steel.

[0014] Furthermore, the supporting part is annular, with a cavity provided between the inner ring and the outer ring, a supporting block rotatably connected to the inner wall of the inner ring, a supporting groove matching the angiographic catheter is provided on the supporting block, and an annular piston is provided extending upward from the edge of the outer ring.

[0015] Furthermore, the storage portion is annular, and an annular cavity sleeved on an annular piston is arranged on the outer side thereof, and an annular tray is arranged on the inner bottom, and the annular tray cooperates with the cavity for placing the guide wire.

[0016] Furthermore, the bottom of the annular cavity is hollowed out, and an air hole and an annular air bag covering the outside of the air hole are provided on the top. The annular cavity moves downward and gradually engages with the annular piston. The internal gas fills the annular air bag through the air hole. The annular air bag completely covers the top of the annular tray and cooperates with the cavity to form an enclosed space.

[0017] Furthermore, the head support component includes a headrest and a support rod below the headrest, and the bottom of the support rod abuts against the lever assembly.

[0018] Furthermore, the transmission assembly includes a first transmission rod arranged on the support rod and hinged thereto, a second transmission rod hinged to one end of the first transmission rod, and a fan gear arranged above the second transmission rod, and the first transmission rod and the second transmission rod are connected in a V shape.

[0019] Furthermore, a rotating shaft is arranged at the bottom of the sector gear, and the other end of the second transmission rod is arranged on the rotating shaft. The second transmission rod drives the sector gear to perform reciprocating motion through the rotating shaft.

[0020] Furthermore, the clamping assembly is a C-shaped frame, with a clamping pad disposed on the upper end and a rack meshing with a sector gear disposed on the bottom, and the sector gear drives the clamping assembly to perform reciprocating motion.

[0021] The beneficial effects of the present invention are: 1. The storage part and the annular piston and other structures can conveniently control the sealing or opening of the annular tray by rotation, easily fix and release the guide wire, simplify the surgical process, prevent the guide wire from being contaminated, and reduce the surgical time and operation difficulty.

[0022] 2. The clamping assembly can convert the up and down movement of the head support assembly into horizontal movement, effectively achieving stable clamping of the patient's head, preventing the head from shaking during surgery, and ensuring the safety and smooth progress of the surgery.

[0023] 3. The height of the angiography catheter support assembly can be automatically adjusted according to the changes in the patient's head position, and the rotating arm can adjust the angle and position to cooperate with the support of the catheter by the support part, which is conducive to surgical operations and reduces the labor intensity of medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the use state of the present invention; Figure 2 for Figure 1 A magnified schematic diagram of part A; Figure 3 for Figure 1 A magnified schematic diagram of part B; Figure 4 for Figure 3 Schematic diagram of structural decomposition; Figure 5 for Figure 3 Schematic diagram of the structure section; Figure 6 It is a schematic diagram of the structure of the present invention; Figure 7 for Figure 6 Schematic diagram of the structural decomposition of part C; Figure 8 for Figure 6 Schematic diagram of the cross-section structure of part C in the middle; Fig. 9 for Figure 8 The enlarged schematic diagram of part F in the middle; Fig.10 for Figure 6 The enlarged schematic diagram of part E in the middle; Fig.11 for Figure 6 The enlarged schematic diagram of the D part; The above drawings include the following reference numerals: 10. Treatment bed; 11. Fixing piece; 111. Lifting slot; 112. Rectangular slide; 113. Central axis; 1131. Opening; 20. Head support assembly; 21. Headrest; 22. Support rod; 221. Fixing block; 30. Clamping assembly; 31. Clamping pad; 32. Rack; 40. Transmission assembly; 41. First transmission rod; 42. Second transmission rod; 43. Sector gear; 44. Rotating shaft; 45. Crossbar; 50. Angiographic catheter support assembly; 51. Lifting rod; 511. Height limit device; 52. Support arm; 521 , sliding groove; 5211, guide groove; 53, rotating arm; 531, rotating buckle; 5311, rotating head; 5312, base; 5313, protrusion; 5314, telescopic groove; 5315, clamping block; 5316, guide rod; 5317, guide groove; 60, lever assembly; 61, remote rod; 62, pivot; 70, supporting part; 71, supporting block; 711, supporting groove; 712, damping shaft; 72, annular piston; 80, storage part; 81, annular cavity; 82, air hole; 83, annular airbag; 84, annular tray. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments, rather than all the embodiments.

[0026] In the description of the present invention, it is necessary to understand that the terms "front", "rear", "left", "right", "up", "down", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] refer to Figure 1-11 The present invention provides an auxiliary device for thrombectomy for cerebrovascular disease, comprising a treatment bed 10, a head support assembly 20, a clamping assembly 30 and an angiographic catheter supporting assembly 50.

[0028] The treatment bed 10 is a conventional surgical bed for patients to lie down. A fixing member 11 is provided on one side thereof. The fixing member 11 is made of metal material, such as stainless steel, to ensure sufficient strength and stability. The fixing member 11 is in the shape of a rectangular parallelepiped as a whole, and its upper end is flush with the treatment bed 10, so that the patient's head can be placed on the headrest with a natural transition. A lifting groove 111 and rectangular slides 112112 arranged on both sides of the lifting groove 111 are provided on the top. The lifting groove 111 is a circular opening 1131, and its size is slightly larger than the diameter of the support rod, so that the support rod can move up and down smoothly therein; the rectangular slide 112 is an elongated rectangular groove, and its length direction is consistent with the short side direction of the treatment bed 10, providing a track for the left and right sliding of the clamping assembly 30. Embodiment 1

[0029] In specific implementation, the headrest 21 is made of a soft and supportive material, such as a memory foam wrapped with medical silicone material, and has an arc shape that matches the contour of the human head. A support rod 22 is fixed at its bottom. The support rod 22 is a cylindrical metal rod with a diameter of about 5-8 cm. The material can be selected from aluminum alloy, which has a light weight and good strength. The support rod 22 slides up and down in the lifting groove 111, and its bottom is set in the tubular central axis 113. The two are connected by a sleeve. The central axis 113 is a hollow tubular structure with an inner diameter slightly larger than the diameter of the support rod 22. The material is the same as the fixing member 11, which is stainless steel. An opening 1131 is provided in the extension direction of one side of the central axis 113, and the width of the opening 1131 is slightly larger than the size of the limit block. The fixing block 221 is a rectangular block structure, one side of which is welded and fixed to the position near the bottom of the support rod 22. The limit block slides up and down in the opening 1131, and can effectively prevent the headrest 21 from rotating by contacting the edge of the opening 1131.

[0030] In specific implementation, the lever assembly 60 includes a remote lever 61 and a pivot 62 disposed in the middle of the remote lever 61 and connected to the fixing member. The bottom of the fixing block 221 abuts against one end of the remote lever 61. The remote lever 61 is a slender metal rod made of stainless steel, and a pivot 62 is disposed in the middle. The pivot 62 is connected to the inner wall of the fixing member 11 through a sleeve, so that the remote lever 61 can flexibly rotate around the pivot 62. The other end of the remote lever 61 abuts against the lower side of the angiographic catheter support assembly 50 40. When the patient's head is placed on the headrest 21, the headrest 21 descends and abuts against the fixing member 11, and at the same time drives the support rod 22 to be pressed down, and the fixing block 221 presses down the remote lever 61 accordingly, and the remote lever 61 rotates at the pivot 62, and the other end of the remote lever 61 is lifted, thereby driving the angiographic catheter support assembly 50 to be lifted.

[0031] In a specific implementation, the angiographic catheter supporting assembly 50 includes a lifting rod 51 , a supporting arm 52 , and a rotating arm 53 disposed on the supporting arm 52 .

[0032] In specific implementation, the lifting rod 51 is a cylindrical metal rod made of aluminum alloy with a diameter of about 3-5 cm. Its lower end is in contact with the remote rod 61. When the remote rod 61 is lifted, the lifting rod 51 is pushed to move upward. A plurality of height limiting devices 511 are provided on the lifting rod 51. The height limiting devices 511 are prior art, including spring steel arranged inside the lifting rod 51, a limiting block arranged at one end of the spring steel, and a limiting hole arranged on the lifting rod 51. The spring steel is made of alloy steel with a high elastic modulus, and one end thereof is welded and fixed to the limiting block. The limiting block is a rectangular block structure, and its size is slightly smaller than the limiting hole. When the height limiting device 511 is inside the fixing member 11, the limiting block is inside the height limiting device 511, and the spring steel is in a compressed state. When the lifting rod 51 is lifted upward and the limiting hole is exposed to the top of the fixing member 11, the spring steel stretches, the limiting block extends out of the limiting hole, and is stuck on the top of the fixing member 11. At this time, the height of the lifting rod 51 is fixed. When you need to descend, just press the limit block back into the limit hole and then press the telescopic rod downward.

[0033] In specific implementation, the support arm 52 is a long strip of metal rod made of stainless steel, one end of which is fixedly connected to the lifting rod 51 by welding or threaded connection, parallel to the long side of the treatment bed, with a length of about 50-80 cm, just located in the patient's groin area. A sliding groove 521 is provided at the other end of the support arm 52. The sliding groove 521 is a rectangular groove with a depth of about 1-2 cm and a width of about 3-5 cm. A plurality of snap-in grooves are provided on both sides of the sliding groove 521. The snap-in grooves are rectangular grooves with a depth of about 0.5-1 cm and a width of about 1-2 cm. The spacing between adjacent snap-in grooves is about 1-3 cm. A guide groove 5211 is provided at the bottom along the length direction of the sliding groove 521. The guide groove 5211 is a rectangular groove with a diameter of about 0.5-1 cm.

[0034] In specific implementation, the rotating buckle 531 includes a base 5312 disposed in the sliding groove 521 and a rotating head 5311 disposed above the base 5312 and rotatably engaged with the base 5312. The base 5312 is a circular block structure, and its size is adapted to the sliding groove 521. A strip-shaped protrusion 5313 is provided at the bottom. The strip-shaped protrusion 5313 is a rectangular strip, and its size matches the guide groove 5211. It can be engaged in the guide groove 5211, so that the base 5312 can slide in the sliding groove 521 without shifting. On the base 5312, the strip-shaped protrusion 5313 is symmetrically provided on both sides with telescopic grooves 5314. The telescopic grooves 5314 are rectangular grooves with a depth of about 0.5-1 cm and a width of about 0.5-1 cm. A clamping block 5315 is slidably arranged in the telescopic groove 5314. The clamping block 5315 is a rectangular block structure, and a guide rod 5316 is vertically arranged at one end close to the strip-shaped protrusion 5313. A rotating head is also arranged above the base, and the two can be rotatably clamped; a guide groove 5317 is provided on the top of the rotating head 5311 to cooperate with the guide rod 5316. The guide groove 5317 is arc-shaped. When the rotating head 5311 rotates, the guide rod 5316 slides inward along the guide groove 5317, thereby driving the clamping block 5315 to slide inside the base 5312, and the base 5312 is unlocked and slides left and right in the sliding groove 521; when the rotating head 5311 rotates in the opposite direction, the clamping block 5315 extends out to clamp with the clamping groove, and the rotating buckle 531 is fixed.

[0035] In a specific implementation, the rotating arm 53 is a long strip of metal rod, made of the same material as the support arm 52, one end of which is sleeved on the top of the rotating buckle and fixedly connected to it by welding or threaded connection. When the rotating arm 53 rotates to a position perpendicular to the support arm 52, the sliding clamping block 5315 extends out and clamps with the clamping groove, and the rotating buckle is fixed. When the rotating arm 53 overlaps with the support arm 52, the sliding clamping block 5315 is completely retracted, and the rotating buckle is unlocked. The other end of the rotating arm 53 is provided with an annular supporting portion 70 formed integrally with the rotating arm 53 for supporting the catheter.

[0036] In specific implementation, the supporting part 70 is annular, and the supporting part 70 is made integrally with the rotating arm 53, and a semicircular supporting block 71 is arranged on the inner side, and the supporting block 71 is made of semicircular silicone material. Damping shafts 712 are arranged on both sides of the supporting block 71, and high-viscosity grease is used as a damping medium inside the damping shaft 712, so that the supporting block 71 rotates slowly and steadily under a certain external force. A supporting groove 711 is arranged on the upper end of the supporting block 71, and the supporting groove 711 is a groove adapted to the catheter, which is used to clamp the catheter, provide support for the catheter in the process of releasing the stent, waiting for the stent to fit the thrombus, and withdrawing the stent and the delivery system, and facilitate the angle fine-tuning requirements during the operation.

[0037] The outer side of the supporting part 70 is extended upwardly to be provided with an annular annular piston 72, which is a cylindrical annular structure, with an outer diameter of about 5-8 cm, a height of about 2-3 cm, and a groove between the inner side of the supporting block, and the depth of the groove is about 1-2 cm. The outer side of the annular piston 72 is threaded, and a receiving part 80 is sleeved thereon. The receiving part 80 is a cylindrical structure, with an annular cavity 81 on the outer side that cooperates with the annular piston 72, the bottom of the annular cavity 81 is hollowed out, and threads are also provided inside, and the relative rotational movement between the receiving part 80 and the annular piston 72 is achieved through the cooperation of the threads. The inner top of the annular cavity 81 is evenly provided with hole-like pores 82, with a diameter of about 0.5-1 cm. An annular tray 84 is arranged at the lower inner side. The annular tray 84 is a round metal disk. A buckle is arranged on the inner wall. The buckle is made of elastic metal sheet and is used to fix the guide wire to prevent it from slipping. The annular tray 84 is arranged in the groove. The outer side of the air hole 82 is covered with an annular air bag 83. The annular air bag 83 is made of rubber material. The annular air bag 83 is tightly fixed on the air hole 82 through high-strength medical glue to ensure that the gas can flow smoothly between the two and the connection is stable and not easy to loosen. When the storage part 80 rotates downward, the air inside the annular cavity 81 is compressed by the annular piston 72 and overflows through the air hole 82. The annular air bag 83 is completely filled and covers the annular tray, so that the annular tray is in a sealed state. When the storage part 80 rotates upward, the air hole 82 is filled with the annular air bag 83, and the annular tray is deflated and is in an open state, which is convenient for medical staff to use.

[0038] In specific operation, during the thrombectomy for cerebrovascular disease, the patient first lies on the treatment bed 10, with the head placed on the headrest 21 of the head support assembly 20. The height of the headrest 21 is adjusted according to the surgical requirements, and the lifting rod 51 of the angiographic catheter support assembly 50 is driven to rise or fall by the lifting and lowering of the headrest 21, and the height of the lifting rod 51 is fixed by the height limiter 511. Then the positions of the support arm 52 and the rotating arm 53 are adjusted to rotate to a suitable angle. When the guide wire needs to be processed, the annular piston 72 is controlled to compress the gas by rotating the storage part 80, so that the annular airbag 83 is filled or deflated, thereby realizing the sealing or opening state of the annular tray 84, which is convenient for medical staff to operate the guide wire and place the catheter in the supporting groove 711 of the supporting block 71 of the supporting part 70. During the operation, the angle of the catheter can be fine-tuned by using the damping shaft 712 on both sides of the supporting block 71 as needed, and the various components of the entire auxiliary device work together to provide effective auxiliary support for the thrombectomy for cerebrovascular disease.

[0039] Embodiment 2

[0040] The support rod 22 is provided with a transmission assembly 40 for converting the up and down movement of the support rod 22 into the horizontal movement of the clamping assembly 30 .

[0041] In specific implementation, the transmission assembly 40 is located above the central axis 113 and fixed on the support rod 22, including a cross bar 45 vertically arranged on the support rod 22, and the cross bar 45 is a metal rod, which is vertically welded or bolted to the support rod 22. Its material can be aluminum alloy, which has certain strength and light weight. The length of the cross bar 45 is moderate, generally designed according to actual transmission requirements, usually between 10-20 cm. Its cross-sectional shape is circular, with a diameter of about 2-3 cm, to ensure sufficient strength to withstand the force during the transmission process.

[0042] There are two first transmission rods 41, which are respectively located at the two ends of the cross bar 45. One end of each first transmission rod 41 is rotatably connected to the end of the cross bar 45 through a pin, and this pin connection mode allows the first transmission rod 41 to rotate freely around the pin. The shape of the first transmission rod 41 is a slender rod-shaped structure, and the material is the same as the cross bar 45, which is an aluminum alloy. Its length is about 15-25 cm, the cross section is circular, and the diameter is about 1.5-2.5 cm. There are also two second transmission rods 42, which correspond to the first transmission rods 41 one by one. One end of each second transmission rod 42 is rotatably connected to the other end of the corresponding first transmission rod 41 through a pin to form a V-shaped structure. The other end of the second transmission rod 42 is fixed to a rotating shaft 44 arranged on the inner wall of the fixing member. The material of the second transmission rod 42 is also an aluminum alloy, the length is about 20-30 cm, the cross section is circular, and the diameter is about 1.5-2.5 cm. Its shape is designed to achieve stable force transmission during the transmission process. The rotating shaft 44 is mounted on the inner wall of the fixed part and connected to the fixed part through a bearing to ensure the flexibility of rotation. The material of the rotating shaft 44 is alloy steel, which has high hardness and high wear resistance and is a columnar structure. The two ends of the rotating shaft 44 are axially positioned by nuts or retaining springs to prevent it from axially moving during the rotation process. , to ensure the flexibility of rotation. The sector gear 43 is mounted on the rotating shaft 44 and is fixed to the rotating shaft 44 by a key connection or a set screw to ensure that the sector gear 43 can rotate synchronously when the rotating shaft 44 rotates. The shape of the sector gear 43 is a quarter circle or a sector smaller than a quarter circle, and its radius is about 5-8 cm.

[0043] In specific implementation, there are two clamping assemblies 30, the bottom of which is a rack 32, the cross section of which is rectangular, 3-5 cm in height, 2-3 cm in width, and meshing with the sector gear 43. The clamping assembly 30 is a C-shaped frame structure as a whole, located in the fixing member 11 and above the sector gear 43. The rack 32 and the C-shaped frame are integrally formed and made of steel to ensure sufficient strength and rigidity.

[0044] A support rod 22 is vertically arranged at one end of the rack 32, and the support rod 22 slides in the rectangular slide 112. The top of the support rod 22 is located above the fixing member, and a connecting rod is arranged on the top thereof, and the connecting rod is parallel to the rack 32 and is in the same plane with the rack 32. A clamping pad 31 is arranged at the other end of the connecting rod, and is located on both sides of the patient's head. The clamping pad 31 can be made of soft and easy-to-clean medical silicone material, and is fixed on the connecting rod by means of a screw or a buckle.

[0045] Working principle: When the support rod 22 moves up and down, the cross bar 45 moves up and down accordingly. The cross bar 45 drives the first transmission rods 41 at both ends to rotate around the pin shaft, and the first transmission rod 41 then drives the second transmission rod 42 to swing around the rotating shaft 44. The swinging of the second transmission rod 42 causes the rotating shaft 44 to rotate, thereby driving the sector gear 43 to reciprocate at a certain angle. The rotation of the sector gear 43 causes the rack 32 to slide back and forth in the horizontal direction through the meshing of the teeth with the rack 32. Since the rack 32 is part of the C-shaped frame, the horizontal sliding of the rack 32 drives the entire clamping assembly 30 to slide left and right on the rectangular slide 112, thereby causing the two clamping pads 31 to move closer or farther away, thereby achieving the clamping operation of the patient's head.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An auxiliary device for thrombectomy for cerebrovascular disease, comprising a treatment bed (10), characterized in that: A liftable head support (20) is provided on one side of the short side of the treatment bed (10), as well as two clamping assemblies (30) slidably provided on both sides of the head support (20) and used to fix the patient's head. A transmission assembly (40) is hingedly connected to the head support (20), and the transmission assembly (40) is clamped with the bottom of the clamping assembly (30). A radiographic catheter support assembly (50) is provided on one side of the long side of the treatment bed (10), and a lever assembly (60) is abutted against the bottom of the radiographic catheter support assembly (50), and the other end of the lever assembly (60) is abutted against the bottom of the head support (20). When the head support (20) descends, it drives the two clamping assemblies (20) to approach each other, and at the same time drives the radiographic catheter support assembly (50) to be lifted to the puncture point of the thrombectomy operation.

2. The auxiliary device for thrombectomy for cerebrovascular disease according to claim 1, characterized in that: The angiographic catheter supporting assembly (50) comprises: A lifting rod (51), the bottom of which abuts against one end of the lever assembly (60); A support arm (52), one end of which is fixedly connected to the top of the lifting rod (51), and the other end of which is provided with a sliding groove (521); The rotating arm (53) has a rotating buckle (531) disposed at one end thereof and the rotating buckle (531) is disposed in the sliding groove (521) and is engaged therewith, and has a supporting portion (70) and a receiving portion (80) engaged therewith at the other end thereof, wherein the receiving portion (80) is used for accommodating a guide wire.

3. The auxiliary device for thrombectomy for cerebrovascular disease according to claim 2, characterized in that: The lifting rod (51) is provided with a height limiting device (511) comprising spring steel, a limiting block and a limiting hole, and the height locking and unlocking of the lifting rod (51) are achieved through the deformation of the spring steel.

4. The auxiliary device for thrombectomy for cerebrovascular disease according to claim 2, characterized in that: The supporting portion (70) is annular, with a cavity provided between the inner ring and the outer ring; a supporting block (71) is rotatably connected to the inner wall of the inner ring; a supporting groove (711) matching the angiographic catheter is provided on the supporting block (71); and an annular piston (72) is provided extending upward from the edge of the outer ring.

5. The auxiliary device for thrombectomy for cerebrovascular disease according to claim 4, characterized in that: The receiving portion (80) is annular, and an annular cavity (81) sleeved on the annular piston (72) is arranged on the outside thereof, and an annular tray (84) is arranged on the bottom of the inside thereof. The annular tray (84) cooperates with the cavity and is used to place the guide wire.

6. The auxiliary device for thrombectomy for cerebrovascular disease according to claim 5, characterized in that: The bottom of the annular cavity (81) is hollowed out, and the top is provided with an air hole (82) and an annular air bag (83) covering the outside of the air hole (82). The annular cavity (81) moves downward and gradually fits with the annular piston (72), and the gas inside it fills the annular air bag (83) through the air hole (82). The annular air bag (83) completely covers the top of the annular tray (84) and cooperates with the cavity to form a closed space.

7. The auxiliary device for thrombectomy for cerebrovascular disease according to claim 1, characterized in that: The head support (20) comprises a headrest (21) and a support rod (22) below the headrest, and the bottom of the support rod (22) abuts against the lever assembly (60).

8. The auxiliary device for thrombectomy for cerebrovascular disease according to claim 7, characterized in that: The transmission assembly (40) comprises a first transmission rod (41) arranged on the support rod (22) and hinged thereto, a second transmission rod (42) hinged to one end of the first transmission rod (41), and a sector gear (43) arranged above the second transmission rod (42); the first transmission rod (41) and the second transmission rod (42) are connected in a V-shape.

9. The auxiliary device for thrombectomy for cerebrovascular disease according to claim 8, characterized in that: A rotating shaft (44) is arranged at the bottom of the sector gear (43), and the other end of the second transmission rod (42) is arranged on the rotating shaft (44). The second transmission rod (42) drives the sector gear (43) to perform reciprocating motion via the rotating shaft (44).

10. The auxiliary device for thrombectomy for cerebrovascular disease according to claim 1, characterized in that: The clamping assembly (30) is a C-shaped frame, with a clamping pad (31) provided at the upper end and a rack (32) meshing with a sector gear (43) provided at the bottom. The sector gear (43) drives the clamping assembly (30) to perform reciprocating motion.

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