Bracket type automatic retraction device

Abstract

The invention provides a support type automatic retraction device which comprises a supporting assembly, an adjusting assembly, an extending assembly and a retraction assembly, the adjusting assembly is arranged at one end of the supporting assembly, and the extending assembly is arranged at the bottom of the adjusting assembly; the retracting assemblies are arranged on the outer side faces of the adjusting assembly and the extending assembly respectively. According to the support type automatic retraction device, through cooperation of the supporting assembly, the adjusting assembly, the extending assembly and the retraction assembly, the device performance and operation safety can be remarkably improved during use, the supporting assembly stabilizes and fixes the device and adjusts the height angle, and the adjusting assembly precisely adjusts the length angle to adapt to an operation; the extending assembly expands the action range, the retracting assembly accurately adjusts the retracting head, all the assemblies cooperate, the device does not need to be held by hands, the retracting stability is enhanced, the surgical site is prevented from being injured, and the risk is reduced.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and particularly to a stent-type automatic retractor device. Background Art

[0002] During medical operations such as surgical operations, it is often necessary to retract tissues, organs, etc. at the surgical site so that doctors can observe the surgical area more clearly and perform surgical operations smoothly.

[0003] Traditional retraction methods usually rely on medical staff to manually operate retraction instruments. This method not only increases the work intensity of medical staff, but also easily causes fatigue due to maintaining a fixed posture for a long time, thereby affecting the stability and accuracy of retraction; in addition, manual retraction is difficult to maintain a constant retraction force and position for a long time, which may cause unnecessary damage to the surgical site and affect the surgical effect.

[0004] Therefore, it is necessary to provide a stent-type automatic retractor device to solve the above technical problems. Summary of the Invention

[0005] The present invention provides a stent-type automatic retractor device, which solves the problems of high work intensity, poor stability and easy damage to the surgical site existing in the traditional manual retraction method.

[0006] To solve the above technical problems, a stent-type automatic retractor device provided by the present invention includes: a support assembly, an adjustment assembly, an extension assembly and a retraction assembly. The adjustment assembly is arranged at one end of the support assembly, the extension assembly is arranged at the bottom of the adjustment assembly, and the retraction assemblies are respectively arranged on the outer sides of the adjustment assembly and the extension assembly; The extension assembly includes a connecting sleeve, a second positioning screw, a first extension rod, two second side plates, a second threaded rod and a second extension rod. The two second side plates are respectively fixedly installed at one ends of the first extension rod and the second extension rod. One sides of the two second side plates are attached to each other. One end of the second threaded rod is rotatably connected to the side surface of one second side plate, and the second threaded rod is also threadedly connected to the inside of the other second side plate. The connecting sleeve is fixedly installed at the other end of the first extension rod. The second positioning screw is threadedly connected to the inside of one side of the connecting sleeve. A neuroendoscope clamping head is arranged at the other end of the second extension rod; The retraction assembly includes a mounting seat, a second knob, a clamping block, a universal adjustment rod and a retraction head. The second knob is rotatably connected to one side of the mounting seat. The clamping block is threadedly connected to the outer side surface of the second knob. The universal adjustment rod is fixedly installed at the top of the mounting seat. The retraction head is fixedly installed at one end of the universal adjustment rod.

[0007] Preferably, the support assembly includes a clamping frame, a first knob, a clamping member, a first positioning screw, a support rod, and a first universal joint. The first knob is threadedly connected to the inside of the bottom of the clamping frame. The clamping member is rotatably connected to the top of the first knob. The support rod is slidably connected to the inside of the clamping frame. The first positioning screw is threadedly connected to the inside of one side of the clamping frame. The first universal joint is fixedly installed at one end of the support rod.

[0008] Preferably, one side of the clamping member is attached to one side of the inner surface of the clamping frame, and one end of the first positioning screw abuts against one side of the support rod.

[0009] Preferably, the adjustment assembly includes a fixed rod, two first side plates, a first threaded rod, an adjustment rod, a second universal joint, and a connection block. One end of the fixed rod is connected to the rotating end of the first universal joint. The two first side plates are respectively fixedly installed at the other end of the fixed rod and one end of the adjustment rod. One side of the two first side plates abuts against each other. One end of the first threaded rod is rotatably connected to one side of one of the first side plates, and the other first side plate is threadedly connected to the outer surface of the first threaded rod. The second universal joint is fixedly installed at the other end of the adjustment rod. The connection block is fixedly installed at the rotating end of the second universal joint.

[0010] Preferably, stripe grooves are formed on the sides of the adjustment rod, the first extension rod, and the second extension rod.

[0011] Preferably, the connection block is also inserted into the inside of the connection sleeve, and one end of the second positioning screw abuts against the side of the connection block.

[0012] Preferably, one side of the clamping block is attached to one side of the inner surface of the mounting seat.

[0013] Preferably, an installation assembly is provided at one end of the extension assembly. The installation assembly includes a third positioning screw, an installation sleeve, an installation frame, a third knob, a movable V-shaped block, and a fixed V-shaped block. The third positioning screw is threadedly connected to the inside of the top of the installation sleeve. The installation frame is fixedly installed at one end of the installation sleeve. The fixed V-shaped block is fixedly installed at one side of the inner surface of the installation frame. The third knob is threadedly connected to the inside of one end of the installation frame. The movable V-shaped block is rotatably connected to one end of the third knob.

[0014] Preferably, the fixed V-shaped block and the movable V-shaped block are arranged oppositely, and one side of the movable V-shaped block is attached to the inner surface of the installation frame.

[0015] Preferably, anti-slip pads are fixedly installed on the top of the inner surface of the clamping frame and the top of the clamping member.

[0016] Compared with the related technologies, a bracket-type automatic retractor provided by the present invention has the following beneficial effects: The present invention provides a bracket-type automatic retractor. Through the collaborative cooperation of a support component, an adjustment component, an extension component, and a retraction component, the performance of the device and the surgical safety can be significantly improved during use. The support component firmly fixes the device and adjusts the height and angle. The adjustment component precisely adjusts the length and angle to adapt to the surgery. The extension component expands the scope of action. The retraction component precisely adjusts the retraction head. The cooperation of each component enables the device to be used without manual support, enhances the retraction stability, avoids damage to the surgical site, and reduces risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a first embodiment of a bracket-type automatic retractor provided by the present invention; Figure 2 is Figure 1 The schematic structural diagram of the support component shown; Figure 3 is Figure 1 The schematic structural diagram of the adjustment component shown; Figure 4 is Figure 1 The schematic structural diagram of the extension component shown; Figure 5 is Figure 1 The schematic structural diagram of the retraction component shown; Figure 6 It is a schematic structural diagram of a second embodiment of a bracket-type automatic retractor provided by the present invention; Figure 7 It is a schematic structural diagram of a third embodiment of a bracket-type automatic retractor provided by the present invention.

[0018] Reference numerals in the drawings: 1, support component; 11, clamping frame; 12, first knob; 13, clamping member; 14, first positioning screw; 15, support rod; 16, first universal joint; 2, adjustment component; 21, fixed rod; 22, first side plate; 23, first threaded rod; 24, adjustment rod; 25, second universal joint; 26, connecting block; 3, extension component; 31, connecting sleeve; 32, second positioning screw; 33, first extension rod; 34, second side plate; 35, second threaded rod; 36, second extension rod; 4, retraction component; 41, mounting seat; 42, second knob; 43, clamping block; 44, universal adjustment rod; 45, retraction head; 5, stripe groove; 6, mounting component; 61, third positioning screw; 62, mounting sleeve; 63, mounting frame; 64, third knob; 65, moving V-shaped block; 66, fixed V-shaped block; 7, anti-slip pad; 8, neuroendoscope clamping head. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] First Embodiment Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , wherein, Figure 1 FIG. Figure 2 is Figure 1 a schematic structural view of the first embodiment of a stent-type automatic retractor provided by the present invention; Figure 3 is Figure 1 a schematic structural view of the support assembly shown in Figure 4 is Figure 1 a schematic structural view of the adjustment assembly shown in Figure 5 is Figure 1 a schematic structural view of the extension assembly shown in A stent-type automatic retractor includes: a support assembly 1, an adjustment assembly 2, an extension assembly 3, and a retraction assembly 4. The adjustment assembly 2 is provided at one end of the support assembly 1, the extension assembly 3 is provided at the bottom of the adjustment assembly 2, and the retraction assembly 4 is provided on the outer sides of the adjustment assembly 2 and the extension assembly 3 respectively; The extension assembly 3 includes a connecting sleeve 31, a second positioning screw 32, a first extension rod 33, two second side plates 34, a second threaded rod 35, and a second extension rod 36. The two second side plates 34 are respectively fixedly installed at one ends of the first extension rod 33 and the second extension rod 36. One side of the two second side plates 34 is in contact with each other. One end of the second threaded rod 35 is rotatably connected to the side surface of one of the second side plates 34, and the second threaded rod 35 is also threadedly connected to the inside of the other second side plate 34. The connecting sleeve 31 is fixedly installed at the other end of the first extension rod 33. The second positioning screw 32 is threadedly connected to the inside of one side of the connecting sleeve 31. A neuroendoscope clamping head 8 is provided at the other end of the second extension rod 36;

[0021] The support assembly 1 includes a clamping frame 11, a first knob 12, a clamping member 13, a first positioning screw 14, a support rod 15, and a first universal joint 16. The first knob 12 is threadedly connected to the inside of the bottom of the clamping frame 11. The clamping member 13 is rotatably connected to the top of the first knob 12. The support rod 15 is slidably connected to the inside of the clamping frame 13. The first positioning screw 14 is threadedly connected to the inside of one side of the clamping frame 11. The first universal joint 16 is fixedly installed at one end of the support rod 15.

[0022] One side of the clamping member 13 is attached to one side of the inner surface of the clamping frame 11. One end of the first positioning screw 14 abuts against one side of the support rod 13.

[0023] The adjusting assembly 2 includes a fixed rod 21, two first side plates 22, a first threaded rod 23, an adjusting rod 24, a second universal joint 25, and a connecting block 26. One end of the fixed rod 21 is connected to the rotating end of the first universal joint 16. The two first side plates 22 are respectively fixedly installed at the other end of the fixed rod 21 and one end of the adjusting rod 24. One side of the two first side plates 22 is attached to each other. One end of the first threaded rod 23 is rotatably connected to one side of one of the first side plates 22. The other first side plate 22 is threadedly connected to the outer side of the first threaded rod 23. The second universal joint 25 is fixedly installed at the other end of the adjusting rod 24. The connecting block 26 is fixedly installed at the rotating end of the second universal joint 25.

[0024] Striped grooves 5 are formed on the sides of the adjusting rod 24, the first extension rod 33, and the second extension rod 36.

[0025] The connecting block 26 is also inserted into the inside of the connecting sleeve 31. One end of the second positioning screw 32 abuts against the side of the connecting block 26.

[0026] One side of the clamping block 43 is attached to one side of the inner surface of the mounting seat 41.

[0027] Two second side plates 34 are respectively fixedly and firmly installed at one end of the first extension rod 33 and the second extension rod 36, and their one sides are mutually attached. One end of the second threaded rod 35 is installed on the side surface of one second side plate 34 by means of rotational connection, and is simultaneously threadedly connected to the inside of the other second side plate 34. This structural design enables the distance between the two second side plates 34 to be adjusted following the rotation of the second threaded rod 35, thereby restricting the angle between the first extension rod 33 and the second extension rod 36, so as to meet the requirements of different surgical depths and ranges; the connecting sleeve 31 is fixedly installed at the other end of the first extension rod 33, and the second positioning screw 32 is threadedly connected to the inside of one side of the connecting sleeve 31 for fixedly connecting other components to ensure the stable connection of the extension component 3 to the entire device. The neuroendoscope clamping head 8 is connected to the second extension rod 36 by means of a universal hinge, so that during use, the neuroendoscope clamping head 8 can be adjusted at multiple angles; When the second knob 42 is rotated, the clamping block 43 will move along the inner side surface of the mounting seat 41, thereby realizing the fastening or loosening of the mounting position. The universal adjustment rod 44 is fixedly installed at the top of the mounting seat 41, and the retractor head 45 is fixedly installed at one end of the universal adjustment rod 44. The design of the universal adjustment rod 44 endows the retractor head 45 with the ability of omnidirectional adjustment, and can be flexibly adjusted at multiple angles and directions, so that the retractor head 45 can be accurately positioned at the part required for the operation to meet the retraction requirements under complex surgical scenarios; The first knob 12 is threadedly connected to the inside of the bottom of the clamping frame 11, and the clamping member 13 is rotationally connected to the top of the first knob 12. During actual use, when the first knob 12 is rotated, the clamping member 13 will move up or down accordingly. Through cooperation with the clamping frame 11, the clamping frame 11 can be firmly limited to the side surface of the hospital bed to ensure the stability of the device during use. The support rod 15 is slidably connected to the inside of the clamping frame 11, and the extended length can be adjusted according to actual needs. The first positioning screw 14 is threadedly connected to the inside of one side of the clamping frame 11. When the support rod 15 is adjusted to the appropriate position, rotate the first positioning screw 14 so that one end of it abuts against one side of the support rod 15, thereby reliably limiting the support rod 15. The first universal head 16 is fixedly installed at one end of the support rod 15. By utilizing its characteristic of universal rotation, the angle of the adjustment component 2 can be conveniently adjusted, providing a flexible basis for subsequent adjustment and retraction operations; One end of the fixed rod 21 is connected to the rotating end of the first universal joint 16 to achieve effective connection and angle transmission with the support assembly 1; by loosening or tightening the first threaded rod 23, the opening and closing angle between the fixed rod 21 and the adjusting rod 24 can be adjusted to adapt to the position and depth requirements of different surgical sites. After adjusting the angle, tighten the first threaded rod 23 to firmly fix the two first side plates 22 and ensure the stability after adjustment. The second universal joint 25 is fixedly installed at the other end of the adjusting rod 24, and the connecting block 26 is fixedly installed at the rotating end of the second universal joint 25; the second universal joint 25 enables the extension assembly 3 to flexibly adjust the angle in different directions, further enhancing the adjustment flexibility of the device. The connecting block 26 is used to cooperate with the connecting sleeve 31 of the extension assembly 3 to achieve a firm connection between the adjusting assembly 2 and the extension assembly 3; Striped grooves 5 are provided on the sides of the adjusting rod 24, the first extension rod 33, and the second extension rod 36. These striped grooves 5 not only increase the stability after installation with the retractor assembly 4, can provide a better fixing effect, and prevent relative sliding between components; the connecting block 26 is also inserted into the interior of the connecting sleeve 31, and one end of the second positioning screw 32 abuts against the side of the connecting block 26. Through this connection method, the firmness of the connection between the adjusting assembly 2 and the extension assembly 3 is ensured, and it is also convenient for disassembly and adjustment when needed. One side of the clamping block 43 is attached to one side of the inner surface of the mounting seat 41, ensuring the stability of the retractor assembly 4 during installation and use and preventing it from shaking or displacing; The first universal joint 16 and the second universal joint 25 have a self-locking structure and can be locked and limited after being adjusted to a suitable angle.

[0028] The working principle of a bracket-type automatic retractor provided by the present invention is as follows: First, according to the position of the operating table and the requirements of the surgical site, adjust the height and angle of the device through the support assembly 1. When adjusting, first place the clamping frame 11 at the edge of the hospital bed, and then rotate the first knob 12 so that the first knob 12 is threadedly connected inside the bottom of the clamping frame 11, thereby driving the clamping member 13 to move upward to cooperate with the clamping frame 11 to limit the clamping frame 11 on the side of the hospital bed. Then move the support rod 13 so that the support rod 13 slides inside the clamping frame 11 until it reaches a suitable position. Then the user rotates the first positioning screw 14 so that one end of the first positioning screw 14 abuts against the side of the support rod 13 to limit the support rod 13. Then adjust the angle of the adjusting assembly 2 through the first universal joint 16; Then, according to actual needs, adjust the length and angle of the adjusting component 2. First, loosen the first threaded rod 23, then adjust the opening and closing angle between the fixed rod 21 and the adjusting rod 24, and then rotate the first threaded rod 23 to lock the two first side plates 22. After that, sleeved the connecting sleeve 31 on the outer side of the connecting block 26, and then rotate the second positioning screw 32 so that one end of the second positioning screw 32 abuts against the outer side of the connecting block 26, thereby installing the adjusting component 2 and the extending component 3. At this time, the user can use the second universal joint 25 to adjust the angle of the extending component 3 until the opening and closing angle between the first extension rod 33 and the second extension rod 36 is adjusted by rotating the second threaded rod 35; Finally, install the retractor component 4. First, sleeved the mounting seat 41 and the clamping block 43 on the outer side of the first extension rod 33 respectively, and then rotate the second knob 42 so that the second knob 42 is threadedly connected inside the clamping block 43, thereby moving the clamping block 43 to one side of the first extension rod 33, so as to install the retractor component 4 on the outer side of the first extension rod 33. Then use the universal adjusting rod 44 to adjust the angle and position of the retractor head 45 to perform the retraction operation on the surgical site.

[0029] Compared with the related art, a bracket-type automatic retractor provided by the present invention has the following beneficial effects: Through the coordinated cooperation of the support component 1, the adjusting component 2, the extending component 3 and the retractor component 4, the performance of the device and the surgical safety can be significantly improved during use. The support component 1 firmly fixes the device and adjusts the height and angle. The adjusting component 2 precisely adjusts the length and angle to adapt to the operation. The extending component 3 expands the working range. The retractor component 4 precisely adjusts the retractor head. The cooperation of each component enables the device to be used without manual support, enhances the retraction stability, avoids damage to the surgical site, and reduces risks.

[0030] Second Embodiment Please refer to Figure 6 , based on a bracket-type automatic retractor provided in the first embodiment of the present application, the second embodiment of the present application proposes another bracket-type automatic retractor. The second embodiment is only a preferred mode of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0031] Specifically, the difference of a bracket-type automatic retractor provided by the second embodiment of the present application lies in that for a bracket-type automatic retractor, one end of the extension assembly 3 is provided with a mounting assembly 6. The mounting assembly 6 includes a third positioning screw 61, a mounting sleeve 62, a mounting frame 63, a third knob 64, a movable V-shaped block 65 and a fixed V-shaped block 66. The third positioning screw 61 is threadedly connected to the inside of the top of the mounting sleeve 62. The mounting frame 63 is fixedly installed at one end of the mounting sleeve 62. The fixed V-shaped block 66 is fixedly installed on one side of the inner surface of the mounting frame 63. The third knob 64 is threadedly connected to the inside of one end of the mounting frame 63. The movable V-shaped block 65 is rotatably connected to one end of the third knob 64.

[0032] The fixed V-shaped block 66 and the movable V-shaped block 65 are arranged oppositely, and one side of the movable V-shaped block 65 is attached to the inner surface of the mounting frame 63.

[0033] The design of the fixed V-shaped block 66 and the movable V-shaped block 65 can better adapt to the clamping requirements of articles with different shapes. By adjusting the movable V-shaped block 65 through the third knob 64, the stable clamping of the article can be realized, avoiding the shaking of the article during the operation and affecting the operation. When the mounting sleeve 62 is in use, it can also be installed on the outer surface of the connecting block 26.

[0034] The working principle of a bracket-type automatic retractor provided by the present invention is as follows: When in use, when it is necessary to install and limit other objects, the staff can sleeved the mounting sleeve 62 on the outer surface of the second extension rod 36, and then rotate the third positioning screw 61 so that one end of the third positioning screw 61 abuts against the top of the second extension rod 36. Then place the object to be fixed on the inner surface of the mounting frame 63 and between the fixed V-shaped block 66 and the movable V-shaped block 65. Then rotate the third knob 64 so that the third knob 64 is threadedly connected inside the mounting frame 63, thereby pushing the movable V-shaped block 65 to move towards one side of the object to clamp and limit the object.

[0035] Compared with the related technology, a bracket-type automatic retractor provided by the present invention has the following beneficial effects: Through the setting of the mounting assembly 6, the device can not only perform retraction operations, but also install and limit other related objects, such as fixing some auxiliary equipment during the operation, enhancing the functionality and practicality of the device.

[0036] Third Embodiment Please refer to Figure 7, based on a bracket-type automatic retractor provided by the first embodiment of the present application, another bracket-type automatic retractor is proposed in the third embodiment of the present application. The third embodiment is only a preferred manner of the first embodiment, and the implementation of the third embodiment will not affect the independent implementation of the first embodiment.

[0037] Specifically, the difference of a bracket-type automatic retractor provided by the third embodiment of the present application is that, in a bracket-type automatic retractor, anti-slip pads 7 are fixedly installed on the top of the inner side surface of the clamping frame 11 and the top of the clamping member 13.

[0038] The working principle of a bracket-type automatic retractor provided by the present invention is as follows: By installing the anti-slip pads 7 on the top of the inner side surface of the clamping frame 11 and the top of the clamping member 13, when the clamping frame 11 is installed on the side of the hospital bed, it can play an anti-slip role.

[0039] Compared with the related art, a bracket-type automatic retractor provided by the present invention has the following beneficial effects: Through the setting of the anti-slip pads 7, the friction between the clamping frame and the hospital bed is effectively increased, making the device more stable during use, avoiding affecting the retraction effect due to the sliding of the device, and further ensuring the smooth progress of the operation.

[0040] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A bracket-type automatic retraction device, characterized in that: include: A support assembly, an adjustment assembly, an extension assembly and a retraction assembly, wherein the adjustment assembly is arranged at one end of the support assembly, the extension assembly is arranged at the bottom of the adjustment assembly, and the retraction assembly is arranged on the outer side surfaces of the adjustment assembly and the extension assembly respectively; The extension assembly includes a connecting sleeve, a second positioning screw, a first extension rod, two second side plates, a second threaded rod and a second extension rod, the two second side plates are fixedly mounted on one end of the first extension rod and the second extension rod respectively, one side of the two second side plates fits together, one end of the second threaded rod is rotatably connected to the side surface of one of the second side plates, the second threaded rod is also threadedly connected to the inside of the other second side plate, the connecting sleeve is fixedly mounted on the other end of the first extension rod, the second positioning screw is threadedly connected to the inside of one side of the connecting sleeve, and the other end of the second extension rod is provided with a neuroendoscopic clamping head; The retraction assembly includes a mounting seat, a second knob, a clamping block, a universal adjustment rod and a retraction head. The second knob is rotatably connected to one side of the mounting seat, the clamping block is threadedly connected to the outer side surface of the second knob, the universal adjustment rod is fixedly installed on the top of the mounting seat, and the retraction head is fixedly installed on one end of the universal adjustment rod.

2. A stent-type automatic retraction device according to claim 1, characterized in that: The support assembly includes a clamping frame, a first knob, a clamping member, a first positioning screw, a support rod and a first universal head. The first knob is threadedly connected to the inside of the bottom of the clamping frame, the clamping member is rotatably connected to the top of the first knob, the support rod is slidably connected to the inside of the clamping frame, the first positioning screw is threadedly connected to the inside of one side of the clamping frame, and the first universal head is fixedly installed on one end of the support rod.

3. A stent-type automatic retraction device according to claim 2, characterized in that: One side of the clamping member is attached to one side of the inner side of the clamping frame, and one end of the first positioning screw is abutted against one side of the support rod.

4. The automatic stent-type retraction device according to claim 1, characterized in that: The adjusting assembly includes a fixing rod, two first side plates, a first threaded rod, an adjusting rod, a second universal head and a connecting block, one end of the fixing rod is connected to the rotating end of the first universal head, two first side plates are fixedly mounted on the other end of the fixing rod and one end of the adjusting rod respectively, one side of the two first side plates fit each other, one end of the first threaded rod is rotatably connected to one side of one of the first side plates, the other first side plate is threadedly connected to the outer side surface of the first threaded rod, the second universal head is fixedly mounted on the other end of the adjusting rod, and the connecting block is fixedly mounted on the rotating end of the second universal head.

5. A stent-type automatic retraction device according to claim 4, characterized in that: The sides of the adjusting rod, the first extending rod and the second extending rod are all provided with stripe grooves.

6. The automatic stent-type retraction device according to claim 4, characterized in that: The connecting block is also inserted into the interior of the connecting sleeve, and one end of the second positioning screw abuts against the side surface of the leveling goose block.

7. The automatic stent-type retraction device according to claim 1, characterized in that: One side of the clamping block is in contact with one side of the inner side of the mounting seat.

8. The automatic stent-type retraction device according to claim 1, characterized in that: A mounting assembly is provided at one end of the extension assembly, and the mounting assembly includes a third positioning screw, a mounting sleeve, a mounting frame, a third knob, a movable V-block and a fixed V-block, the third positioning screw is threadedly connected to the inside of the top of the mounting sleeve, the mounting frame is fixedly installed at one end of the mounting sleeve, the fixed V-block is fixedly installed on one side of the inner side of the mounting frame, the third knob is threadedly connected to the inside of one end of the mounting frame, and the movable V-block is rotatably connected to one end of the third knob.

9. The automatic stent-type retraction device according to claim 8, characterized in that: The fixed V-shaped block and the movable V-shaped block are arranged opposite to each other, and one side of the movable V-shaped block is attached to the inner side surface of the installation frame.

10. The automatic stent-type retraction device according to claim 2, characterized in that: The top of the inner side surface of the clamping frame and the top of the clamping member are both fixedly mounted with anti-slip pads.

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