Surgical instrument fixing device

Abstract

The invention discloses a surgical instrument fixing device which comprises a first adjusting rod and a second adjusting rod. A first adjusting seat; a second adjusting rod; a second adjusting seat; the guide seat is provided with a guide cylinder; the first linkage assembly comprises a first linkage wheel and two first racks, the first racks are fixed to the second adjusting seat, and when the first racks rotate, the two first racks move in opposite directions; each synchronous assembly comprises a synchronous wheel set and two connecting rods; the two connecting rods are hinged to each other and are hinged to the second adjusting seat and the first adjusting seat respectively; the synchronous wheel set comprises two synchronous wheel structures and a circulating linkage structure, and the two synchronous wheel structures are in transmission connection through the circulating linkage structure. The two synchronizing wheel structures are respectively a first synchronizing wheel and a second synchronizing wheel, and the second synchronizing wheel is fixed with the guide seat; and the second linkage assembly comprises two second linkage wheels, and the second linkage wheels are fixed to the first synchronous wheel.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to a surgical instrument fixing device. Background Art

[0002] During surgery, in order to ensure the safety and smooth progress of the operation, some surgical instruments often need to be kept in a certain position for a long time.

[0003] In the prior art, when performing spinal surgery, it is generally necessary to use a fixing device to fix the surgical instruments. The fixing device includes two channel tubes for guiding and fixing the surgical instruments. However, the two channel tubes of the fixing device in the prior art usually only have the function of adjusting the angle separately. When the channel tubes on both sides need to be symmetrically arranged on both sides of the spine, medical staff need to adjust the two channel tubes separately to make the two channel tubes symmetrical, which makes the adjustment inconvenient. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a surgical instrument fixing device to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0005] The solution of the present invention to solve its technical problem is:

[0006] Surgical instrument fixing device, comprising:

[0007] A first adjustment lever;

[0008] A first adjustment seat slidably connected to the first adjustment rod;

[0009] a second adjustment rod mounted on the first adjustment seat;

[0010] a second adjustment seat slidably connected to the second adjustment rod, wherein a sliding direction of the second adjustment seat intersects with a sliding direction of the first adjustment seat;

[0011] A guide seat rotatably connected to the second adjustment seat, wherein the guide seat is provided with a guide cylinder;

[0012] A first linkage assembly, the first linkage assembly comprising a first linkage wheel and two first racks, the two first racks are respectively fixed to the two second adjustment seats, the first linkage wheel is arranged between the two first racks, the first linkage wheel is meshed with the first rack, and when the first rack rotates, the two first racks move in opposite directions;

[0013] Two synchronous components are respectively arranged on both sides of the first adjusting rod, and the synchronous components include two synchronous wheel groups and two connecting rods; the two connecting rods are hinged to each other, and the ends of the two connecting rods that are away from each other are respectively hinged to the second adjusting seat and the first adjusting seat; the synchronous wheel group and the connecting rod correspond to each other one by one, and the synchronous wheel group includes two synchronous wheel structures and a circular linkage structure, the two synchronous wheel structures are respectively rotatably connected to the two ends of the connecting rod, the circular linkage structure bypasses the two synchronous wheel structures, and the two synchronous wheel structures are transmission-connected through the circular linkage structure; wherein the synchronous wheel structure close to the first adjusting rod is set as the first synchronous wheel, and the synchronous wheel structure farthest from the first adjusting rod is set as the second synchronous wheel, the first synchronous wheel is fixed with a connecting gear, and the second synchronous wheel is fixed to the guide seat;

[0014] The second linkage assembly comprises two second linkage wheels meshing with each other, and the two second linkage wheels are respectively meshed with the two connecting gears.

[0015] Through the above technical solution, the two second adjustment seats of the surgical instrument fixing device are linked through the first linkage assembly. When one of the second adjustment seats moves, the first rack will move with the second adjustment seat, thereby driving the first linkage wheel to rotate. Through the first linkage wheel, the other first rack is driven to move, and then the other second adjustment seat is driven to move along the second adjustment rod, thereby realizing the synchronous movement of the two second adjustment seats, so that the two second adjustment seats remain symmetrically arranged on both sides of the first adjustment rod.

[0016] The two guide seats are linked through a synchronization component and a second linkage component. When the medical staff drives one of the guide seats to rotate relative to the second adjustment seat, the guide seat will drive the second synchronization wheel to rotate, and then drive the first synchronization wheel to rotate through the circular linkage structure. Moreover, since the two first synchronization wheels of the two synchronization components are connected through the second linkage component, the two guide seats can rotate synchronously, so that the two guide seats remain symmetrically arranged on both sides of the first adjustment rod.

[0017] When performing spinal surgery, the fixing device is used to fix the surgical instrument. The two guide cylinders of the fixing device can be adjusted simultaneously and kept symmetrical, thereby making the fixing and guiding adjustment of the surgical instrument more convenient and simple.

[0018] As a further improvement of the above technical solution, both the first adjusting rod and the second adjusting rod are arc-shaped components.

[0019] As a further improvement of the above technical solution, it also includes: a switch button, which is slidingly connected to the first adjustment seat, and the switch button is connected to the first linkage wheel and at least one of the second linkage wheels. The switch button drives the first linkage wheel and the second linkage wheel to move, thereby controlling the disengagement or engagement of the first linkage wheel with the first rack and controlling the disengagement or engagement of the second linkage wheel with the first synchronous wheel.

[0020] As a further improvement of the above technical solution, a first locking knob is arranged between the first adjustment seat and the first adjustment rod, the first locking knob is threadedly connected to the first adjustment seat, and the tail end of the first locking knob is tightly pressed against the first adjustment rod.

[0021] As a further improvement of the above technical solution, a second locking knob is arranged between the second adjustment seat and the second adjustment rod, the second locking knob is threadedly connected to the second adjustment seat, and the tail end of the second locking knob is tightly pressed against the second adjustment rod.

[0022] As a further improvement of the above technical solution, a third locking knob is provided between the guide seat and the second adjustment seat, the third locking knob is threadedly connected to the guide seat, and the tail end of the third locking knob is tightly pressed against the second adjustment seat.

[0023] As a further improvement of the above technical solution, it also includes a fine-tuning component, which includes a fine-tuning screw and a guide rod. The fine-tuning screw passes through the first adjustment seat, and the middle part of the fine-tuning screw is threadedly connected to the first adjustment seat. The fine-tuning screw is provided with two sections of threaded structures with opposite rotation directions, the end of the second adjustment rod is threadedly connected to the threaded structure, and the second adjustment rod is slidingly connected to the guide rod.

[0024] As a further improvement of the above technical solution, the second adjusting rod and the first adjusting rod are both provided with scales, and the guide rod is provided with scales.

[0025] As a further improvement of the above technical solution, the guide seat is fixedly mounted with an instrument clamp, and the instrument clamp is used to clamp the portion of the instrument exposed outside the guide cylinder.

[0026] The beneficial effect of the present invention is that the two guide cylinders of the fixing device can be adjusted simultaneously and maintain symmetry, thereby making the adjustment of the fixing and guiding of the surgical instrument more convenient and simple.

[0027] The invention is used in the technical field of medical devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0029] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0030] Figure 2 is a schematic diagram of the overall structure of an embodiment of the present invention from another angle;

[0031] Figure 3 It is a schematic diagram of the overall structure from another angle of an embodiment of the present invention.

[0032] In the figure, 001, switching button; 100, first adjusting rod; 110, fixing seat; 120, first locking knob; 200, first adjusting seat; 300, second adjusting rod; 310, second locking knob; 400, second adjusting seat; 500, guide seat; 510, guide cylinder; 520, instrument clamp; 530, third locking knob; 600, first linkage assembly; 610, first rack; 620, first linkage wheel; 700, synchronization assembly; 710, connecting rod; 720, synchronization wheel group; 721, circulating linkage structure; 722, synchronization wheel structure; 723, connecting gear; 800, second linkage assembly; 810, second linkage wheel; 900, fine-tuning assembly; 910, guide rod; 920, fine-tuning screw. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0034] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] Reference Figures 1 to 3 The surgical instrument fixing device includes: a first adjusting rod 100, a first adjusting seat 200, a second adjusting rod 300, a second adjusting seat 400, a guide seat 500, a first linkage assembly 600, a synchronization assembly 700, and a second linkage assembly 800.

[0037] The first adjustment rod 100 is an arc-shaped member. In other embodiments, the first adjustment rod 100 can also be set as a straight member. Those skilled in the art can select the specific shape of the first adjustment rod 100 according to actual needs. Specifically, in this embodiment, the first adjustment rod 100 is provided with scales.

[0038] A fixing seat 110 is provided at one end of the first adjusting rod 100. The fixing seat 110 has two strip holes for screws to pass through. Before using the surgical instrument fixing device, the fixing seat 110 is first installed on a fixing frame or other components in the operating room by screws to fix the surgical instrument fixing device.

[0039] The first adjustment seat 200 is slidably connected to the first adjustment rod 100 .

[0040] A first locking knob 120 is disposed between the first adjusting rod 100 and the first adjusting seat 200, and the first locking knob 120 is used to fix the relative position between the first adjusting rod 100 and the first adjusting seat 200. The first locking knob 120 is threadedly connected to the first adjusting seat 200, and the tail end of the first locking knob 120 is tightly pressed against the first adjusting rod 100.

[0041] The second adjustment rod 300 is mounted on the first adjustment seat 200. Specifically, in this embodiment, the second adjustment rod 300 is slidably connected to the first adjustment seat 200, and the second adjustment rod 300 is connected to the first adjustment seat 200 through the fine adjustment assembly 900. Specifically, in this embodiment, the second adjustment rod 300 is provided with a scale.

[0042] The fine-tuning assembly 900 includes a guide rod 910 and a fine-tuning screw 920 .

[0043] The fine-adjustment screw 920 passes through the first adjustment seat 200, and the middle part of the fine-adjustment screw 920 is rotatably connected to the first adjustment seat 200. Two ends of the fine-adjustment screw 920 are respectively provided with two sections of threaded structures, and the rotation directions of the two sections of threaded structures are opposite. The two second adjustment rods 300 are respectively threadedly connected to the threaded structures at the two ends. When the fine-adjustment screw 920 is driven and rotated by medical staff, since the rotation directions of the two sections of threaded structures are opposite, the two second adjustment rods 300 will move in opposite directions at the same time, thereby achieving simultaneous adjustment of the positions of the two second adjustment rods 300.

[0044] The guide rod 910 passes through the first adjustment seat 200 and the second adjustment rod 300, the guide rod 910 is fixedly connected to the first adjustment seat 200, and the second adjustment rod 300 is slidably connected to the guide rod 910. Specifically, in this embodiment, a scale is provided on the guide rod 910, and by setting the scale, the medical staff can more intuitively understand the distance between the two second adjustment rods 300. In other embodiments, the guide rod 910 can also be fixed to one of the second adjustment rods 300, and the guide rod 910 is slidably connected to the first adjustment seat 200 and the other second adjustment rod 300. Those skilled in the art can select the specific installation position of the guide rod 910 according to actual needs.

[0045] In this embodiment, the second adjustment rod 300 is configured as an arc-shaped member. In other embodiments, the second adjustment rod 300 may also be configured as a straight member. Those skilled in the art may select the specific shape of the second adjustment rod 300 according to actual needs.

[0046] The second adjustment seat 400 is slidably connected to the second adjustment rod 300. The sliding direction of the second adjustment seat 400 intersects with the sliding direction of the first adjustment seat 200.

[0047] Specifically, a second locking knob 310 is provided between the second adjusting rod 300 and the second adjusting seat 400 . The second locking knob 310 is threadedly connected to the second adjusting seat 400 via a threaded structure provided on the second locking knob 310 . The tail end of the second locking knob 310 is pressed against the end face of the second adjusting rod 300 .

[0048] The guide seat 500 is mounted on the second adjustment seat 400, and the guide seat 500 is rotatably connected to the second adjustment seat 400. A guide cylinder 510 is fixedly mounted on the guide seat 500.

[0049] Specifically, a third locking knob 530 is provided between the second adjustment seat 400 and the guide seat 500 . The third locking knob 530 is threadedly connected to the guide seat 500 via a threaded structure provided on the third locking knob 530 . The tail end of the third locking knob 530 is pressed against the end face of the second adjustment seat 400 .

[0050] The first linkage assembly 600 includes a first rack 610 and a first linkage wheel 620. The number of the first racks 610 is set to two. The two first racks 610 are respectively fixed to the two second adjustment seats 400. Specifically, in this embodiment, the first rack 610 is set to be a hard arc-shaped member to adapt to the arc-shaped design of the second adjustment rod 300. The first linkage wheel 620 is rotatably connected to the first adjustment seat 200, and the first linkage wheel 620 is located between the two first racks 610. The first rack 610 is meshed with the first linkage wheel 620, and the two first racks 610 are respectively meshed with the two sides of the first linkage wheel 620.

[0051] Since the two first racks 610 are respectively engaged with the two sides of the first linkage wheel 620, when the first racks 610 rotate, the two first racks 610 will move in opposite directions, so that the two second adjustment rods 300 can be moved closer to or farther away from each other, thereby adjusting the positions of the two second adjustment rods 300 at the same time and keeping the two second adjustment rods 300 symmetrically arranged on both sides of the first adjustment rod 100.

[0052] The number of the synchronization components 700 is set to two, and the two synchronization components 700 are respectively arranged on both sides of the first adjustment rod 100 .

[0053] Specifically, the synchronization assembly 700 includes a connecting rod 710 and a synchronization wheel set 720. The number of connecting rods 710 is set to two, and the ends of the two connecting rods 710 are hinged to each other so that the two connecting rods 710 can rotate relative to each other. One end of one connecting rod 710 is hinged to the second adjustment seat 400, and the end of the other connecting rod 710 is hinged to the first adjustment seat 200, so that the two connecting rods 710 are respectively connected to the second adjustment seat 400 and the first adjustment seat 200.

[0054] The synchronous wheel set 720 includes a circulating linkage structure 721 and a synchronous wheel structure 722. The number of the synchronous wheel structures 722 is set to two. The two synchronous wheel structures 722 are respectively set at both ends of the connecting rod 710, and the synchronous wheel structure 722 is rotatably connected to the connecting rod 710. Specifically, in this embodiment, the circulating linkage structure 721 is set as a synchronous belt. In other embodiments, the circulating linkage structure 721 can also be set as a chain or other structure. Those skilled in the art can select the circulating linkage structure 721 according to actual needs.

[0055] The circular linkage structure 721 bypasses the two synchronous wheel structures 722, and the two synchronous wheel structures 722 are connected by transmission through the circular linkage structure 721. The synchronous wheel structure 722 close to the first adjustment rod 100 is set as the first synchronous wheel, and the synchronous wheel structure 722 farthest from the first adjustment rod 100 is set as the second synchronous wheel. The first synchronous wheel is fixed with a connecting gear 723, and the second synchronous wheel is fixedly connected to the guide seat 500.

[0056] The second linkage assembly 800 includes a second linkage wheel 810 , the number of which is set to two. The second linkage wheel 810 is rotatably connected to the first adjustment seat 200 , the two second linkage wheels 810 are meshed with each other, and the two second linkage wheels 810 are respectively meshed with two connecting gears 723 .

[0057] Specifically, in this embodiment, the surgical instrument fixing device further includes a switching button 001, which is mounted on the first adjustment seat 200, and the first adjustment seat 200 is slidably connected to the switching button 001. The switching button 001 is connected to at least one second linkage wheel 810 and a first linkage wheel 620. Specifically, in this embodiment, the switching button 001 is connected to two second linkage wheels 810 and a first linkage wheel 620. When the switching button 001 is driven to move relative to the first adjustment seat 200, the switching button 001 drives the second linkage wheel 810 and the first linkage wheel 620 to move, so that the first rack 610 is engaged or disengaged with the first linkage wheel 620, and the first synchronous wheel is engaged or disengaged with the second linkage wheel 810.

[0058] By operating the switching button 001, the linkage structure of the two synchronization components 700 can be moved away from the synchronization component 700, so that the two synchronization components 700 can be adjusted separately to adapt to the different surgical requirements of the needle insertion points on both sides of the spine.

[0059] When it is necessary to make the two synchronization components 700 move synchronously again, it is necessary to restore each component to the zero point, and then operate the switch button 001 again to move the switch button 001 relative to the first adjustment seat 200, thereby driving the second linkage wheel 810 and the first linkage wheel 620 to move, so that the first rack 610 and the first linkage wheel 620 are re-engaged, and the first synchronization wheel and the second linkage wheel 810 are re-engaged, and then the two sides can be adjusted synchronously.

[0060] The guide seat 500 is fixedly mounted with an instrument clamp 520 , which is used to clamp the portion of the instrument exposed from the guide cylinder 510 .

[0061] Since the first adjustment rod 100 is an arc-shaped component, the movement path of the first adjustment seat 200 is an arc-shaped path, so that the inclination angle of other components connected to the first adjustment seat 200 can be adjusted, and the lower end of other components connected to the first adjustment seat 200 can be kept within a certain distance range from the needle insertion point, so as to avoid the lower end of other components connected to the first adjustment seat 200 (the lower end of the guide cylinder 510) being too far away from the needle insertion point, so as to meet the requirements of surgical needle insertion.

[0062] Since the second adjustment rod 300 is an arc-shaped component, the movement path of the second adjustment seat 400 is an arc-shaped path, so that the inclination angle of other components connected to the second adjustment seat 400 can be adjusted, and the lower end of other components connected to the second adjustment seat 400 can be kept within a certain distance range from the needle insertion point, so as to avoid the lower end of other components connected to the second adjustment seat 400 (the lower end of the guide cylinder 510) being too far away from the needle insertion point, so as to meet the requirements of surgical needle insertion.

[0063] The two second adjustment seats 400 of the surgical instrument fixing device are linked through the first linkage assembly 600. When one of the second adjustment seats 400 moves, the first rack 610 will move with the second adjustment seat 400, thereby driving the first linkage wheel 620 to rotate. Through the first linkage wheel 620, the other first rack 610 is driven to move, and then the other second adjustment seat 400 is driven to move along the second adjustment rod 300, thereby realizing the synchronous movement of the two second adjustment seats 400, so that the two second adjustment seats 400 remain symmetrically arranged on both sides of the first adjustment rod 100.

[0064] The two guide seats 500 are linked through the synchronization component 700 and the second linkage component 800. When the medical staff drives one of the guide seats 500 to rotate relative to the second adjustment seat 400, the guide seat 500 will drive the second synchronization wheel to rotate, and then drive the first synchronization wheel to rotate through the circular linkage structure 721. Moreover, since the two first synchronization wheels of the two synchronization components 700 are connected through the second linkage component 800, the two guide seats 500 can rotate synchronously, so that the two guide seats 500 remain symmetrically arranged on both sides of the first adjustment rod 100.

[0065] When performing spinal surgery, the fixation device is used to fix the surgical instrument. The two guide cylinders 510 of the fixation device can be adjusted simultaneously and maintained symmetrically, thereby making the fixation and guidance of the surgical instrument more convenient and simple to adjust.

[0066] The preferred embodiments of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A surgical instrument fixing device, characterized in that: include: A first adjustment lever; A first adjustment seat slidably connected to the first adjustment rod; a second adjustment rod mounted on the first adjustment seat; a second adjustment seat slidably connected to the second adjustment rod, wherein a sliding direction of the second adjustment seat intersects with a sliding direction of the first adjustment seat; A guide seat rotatably connected to the second adjustment seat, wherein the guide seat is provided with a guide cylinder; A first linkage assembly, the first linkage assembly comprising a first linkage wheel and two first racks, the two first racks are respectively fixed to the two second adjustment seats, the first linkage wheel is arranged between the two first racks, the first linkage wheel is meshed with the first rack, and when the first rack rotates, the two first racks move in opposite directions; Two synchronous components are respectively arranged on both sides of the first adjusting rod, and the synchronous components include two synchronous wheel groups and two connecting rods; the two connecting rods are hinged to each other, and the ends of the two connecting rods that are away from each other are respectively hinged to the second adjusting seat and the first adjusting seat; the synchronous wheel group and the connecting rod correspond to each other one by one, and the synchronous wheel group includes two synchronous wheel structures and a circular linkage structure, the two synchronous wheel structures are respectively rotatably connected to the two ends of the connecting rod, the circular linkage structure bypasses the two synchronous wheel structures, and the two synchronous wheel structures are transmission-connected through the circular linkage structure; wherein the synchronous wheel structure close to the first adjusting rod is set as the first synchronous wheel, and the synchronous wheel structure farthest from the first adjusting rod is set as the second synchronous wheel, the first synchronous wheel is fixed with a connecting gear, and the second synchronous wheel is fixed to the guide seat; The second linkage assembly comprises two second linkage wheels meshing with each other, and the two second linkage wheels are respectively meshed with the two connecting gears.

2. The surgical instrument fixing device according to claim 1, characterized in that: The first adjusting rod and the second adjusting rod are both arc-shaped components.

3. The surgical instrument fixing device according to claim 1, characterized in that: Also includes: A switch button, wherein the switch button is slidingly connected to the first adjustment seat, the switch button is connected to the first linkage wheel and at least one of the second linkage wheels, and the switch button drives the first linkage wheel and the second linkage wheel to move, thereby controlling the disengagement or engagement of the first linkage wheel with the first rack and controlling the disengagement or engagement of the second linkage wheel with the first synchronous wheel.

4. The surgical instrument fixing device according to claim 1, characterized in that: A first locking knob is disposed between the first adjustment seat and the first adjustment rod. The first locking knob is threadedly connected to the first adjustment seat, and a tail end of the first locking knob is tightly pressed against the first adjustment rod.

5. The surgical instrument fixing device according to claim 1, characterized in that: A second locking knob is provided between the second adjustment seat and the second adjustment rod. The second locking knob is threadedly connected to the second adjustment seat, and the tail end of the second locking knob is tightly pressed against the second adjustment rod.

6. The surgical instrument fixing device according to claim 1, characterized in that: A third locking knob is arranged between the guide seat and the second adjustment seat. The third locking knob is threadedly connected to the guide seat, and the tail end of the third locking knob is tightly pressed against the second adjustment seat.

7. The surgical instrument fixing device according to claim 1, characterized in that: It also includes a fine-tuning component, which includes a fine-tuning screw and a guide rod. The fine-tuning screw passes through the first adjustment seat, and the middle part of the fine-tuning screw is threadedly connected to the first adjustment seat. The fine-tuning screw is provided with two sections of threaded structures with opposite rotation directions, the end of the second adjustment rod is threadedly connected to the threaded structure, and the second adjustment rod is slidably connected to the guide rod.

8. The surgical instrument fixing device according to claim 7, characterized in that: The guide rod, the second adjusting rod and the first adjusting rod are all provided with scales.

9. The surgical instrument fixing device according to claim 1, characterized in that: The guide seat is fixed with an instrument clamp, and the instrument clamp is used to clamp the part of the instrument exposed from the guide cylinder.

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