Nasal endoscopic instrument for neurosurgery department

Abstract

The invention discloses a neurosurgery nasal endoscopic instrument which comprises a rotary mounting mechanism capable of being rotationally adjusted, lifting supporting mechanisms capable of being adjusted in height are mounted on the two sides of the bottom of the rotary mounting mechanism, and mounting fixing mechanisms used for fixing the lifting supporting mechanisms are mounted at the bottoms of the lifting supporting mechanisms. The top of the rotary mounting mechanism is provided with a telescopically adjustable examination mechanism used for detecting the nasal cavity of the patient, and the position, corresponding to the examination mechanism, of the rotary mounting mechanism is provided with a distraction mechanism used for distraction of the nasal cavity of the patient. The angle of the endoscope body can be freely adjusted according to the needs of a patient, so that the endoscope body is aligned with the nasal cavity of the patient, the two hands can be liberated when the nasal cavity of the patient is examined, the working intensity of medical staff is reduced, meanwhile, the nasal cavity of the patient can be opened when the nasal cavity of the patient is examined, and the medical staff can use the endoscope conveniently. Therefore, the lens is convenient to insert, and the definition of observing the nasal cavity of a patient is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of nasal endoscopic instruments, and in particular to a neurosurgery transnasal endoscopic instrument. Background Art

[0002] In the diagnosis process of nasal diseases, the detection equipment usually used is a nasal cavity mirror. The nasal cavity mirror is specially used for human nasal cavity surgery. It is used in the nasal cavity to form a video screen operation. There is no nasal cavity mirror in the prior art. In the human nasal cavity surgery, the direct vision surgery is generally performed with a reflector as the field of view. There is also a light guide through the mirror as the field of view for direct vision surgery.

[0003] For example, a Chinese patent with the publication (announcement) number CN211187151 U discloses a new type of multifunctional nasal cavity mirror, which provides sufficient light source through LED lights evenly located on the side of the end of the hard tube mirror, directly irradiates at close range, and improves the utilization rate of the light source. At the same time, suction and drug delivery components are added to facilitate the suction of secretions in the body and direct drug delivery to the affected area. It includes a coaxially connected hard tube mirror and an eyepiece, and the hard tube mirror includes a protective tube, the outer edge of which is provided with a photometric hole; an image transmission optical fiber for transmitting an image to the eyepiece, the image transmission optical fiber is concentrically fixed in the protective tube; and a plurality of light transmission optical fibers for receiving light from an external light source through the photometric hole. The new type of multifunctional nasal cavity mirror also includes a suction and drug delivery device fixed on the left side of the hard tube mirror, and a photometric hole is also provided on the outer edge of one end close to the protective tube and away from the eyepiece;

[0004] For another example, a Chinese patent with publication (announcement) number CN207520118U discloses a nasal endoscope for nasal surgery, comprising: a mirror body, a nasal head is provided at one end of the mirror body, a lens is provided in the nasal head, a mirror seat is provided at one end of the lens, a heating ring is provided on the side of the lens away from the mirror seat, and a mirror protection sheet is provided on the side of the heating ring away from the lens; a power box is provided on the side of the mirror body close to the nasal head, a power supply is provided in the power box, a power supply cover is provided on the upper end of the power supply, the power cover is fixed to the power box by screws, and a control button is provided on one side of the power box, and the control button is electrically connected to the power supply and the heating ring respectively.

[0005] Although the above technical solutions solve the corresponding technical problems, the nasal scope in the above technology is not easy to stretch the patient's nasal cavity during use, so it is not convenient to insert the nasal lens during examination. At the same time, the nasal scope in the above technology needs to be handheld when used, which increases the labor intensity of medical staff, especially for patients who need long-term examination. Summary of the invention

[0006] The purpose of the present invention is to provide a neurosurgery transnasal endoscopic instrument, which can not only freely adjust the angle of the endoscope body according to the needs of the patient, so that the endoscope body is aimed at the patient's nasal cavity, but also free both hands when examining the patient's nasal cavity, thereby reducing the workload of medical staff, and at the same time, when inspecting the patient's nasal cavity, the patient's nasal cavity can be stretched open, thereby facilitating the insertion of the lens and increasing the clarity of observation of the patient's nasal cavity.

[0007] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0008] A neurosurgery transnasal endoscopic instrument, comprising:

[0009] A rotatable and adjustable rotating mounting mechanism, height-adjustable lifting support mechanisms are installed on both sides of the bottom of the rotating mounting mechanism, a mounting and fixing mechanism for fixing the lifting support mechanism is installed at the bottom of the lifting support mechanism, a telescopic and adjustable inspection mechanism for patient nasal cavity detection is installed on the top of the rotating mounting mechanism, and an opening mechanism for opening the patient's nasal cavity is installed on the rotating mounting mechanism and at a position corresponding to the inspection mechanism.

[0010] The above-mentioned neurosurgery transnasal endoscopic instrument, wherein the rotating mounting mechanism includes a rotating mounting seat, and damping shafts are rotatably mounted on both sides of the rotating mounting seat.

[0011] The above-mentioned neurosurgical transnasal endoscopic instrument, wherein the lifting support mechanism includes a telescopic sleeve, a hollow column that can be raised and lowered is slidably connected to the inner wall of the telescopic sleeve, and the side surface of the hollow column is rotatably connected to the rotating mounting seat through the damping shaft.

[0012] The above-mentioned neurosurgical transnasal endoscopic instrument, wherein locking blocks are provided on both sides of the hollow column, a plurality of locking grooves arranged at equal distances are provided on the inner wall of the telescopic sleeve and corresponding to the positions of the locking blocks, a fixed partition is fixedly connected to the inner wall of the hollow column, a sliding rod is slidably connected to the fixed partition, a positioning ring is fixedly connected to the bottom of the sliding rod, a first set of springs is sleeved on the sliding rod located between the positioning ring and the fixed partition, two symmetrically arranged pull ropes are fixedly connected to the bottom of the positioning ring, a guide pulley is installed on the inner wall of the hollow column and corresponding to the position of the pull rope, and the end of the pull rope away from the positioning ring is fixedly connected to the side of the locking block, and a connecting spring is fixedly connected to the side of the locking block close to the hollow column.

[0013] The above-mentioned neurosurgical transnasal endoscopic instrument, wherein the installation and fixing mechanism includes a fixing frame fixedly connected to the bottom of the telescopic sleeve, the bottom of the fixing frame is slidably connected with a fixing rod, the top of the fixing rod is fixedly connected with a clamping block, a second set of springs is sleeved on the fixing rod located between the clamping block and the fixing frame, and the top of the inner wall of the fixing frame and the top of the clamping block are both fixedly connected with a clamping pad.

[0014] The above-mentioned neurosurgery transnasal endoscopic instrument, wherein the inspection mechanism includes an endoscope body that can be raised and lowered, and a through hole is opened on the rotating mounting seat at a position corresponding to the endoscope body.

[0015] The above-mentioned neurosurgical transnasal endoscopic instrument, wherein the inspection mechanism also includes a support frame fixedly connected to the rotating mounting seat, a threaded shaft is rotatably mounted on the bottom of the inner wall of the support frame through a bearing, a threaded sleeve is threadedly connected to the threaded shaft, and the side of the threaded sleeve is fixedly connected to the endoscope body through a fixed sleeve, and the side of the threaded sleeve is fixedly connected to a limiting slider, and a limiting groove matching the limiting slider is opened on the support frame and at a position corresponding to the limiting slider.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are:

[0017] 1. The present invention can not only freely adjust the angle of the endoscope body according to the needs of the patient, so that the endoscope body is aligned with the patient's nasal cavity, but also free both hands when examining the patient's nasal cavity, thereby reducing the workload of medical staff, and at the same time, when examining the patient's nasal cavity, the patient's nasal cavity can be stretched open, thereby facilitating the insertion of the lens and increasing the clarity of observation of the patient's nasal cavity;

[0018] 2. The present invention can compress the second set of springs by pulling the fixed pull rod, and then the fixing frame can be clamped to the bedside of the bed, and then the fixed pull rod can be loosened, so that the elastic force of the second set of springs can drive the clamping block to be clamped at the edge of the bed, thereby realizing convenient fixing of the present invention;

[0019] 3. The present invention can make the rotating mounting seat rotate around the damping shaft by pulling the rotating mounting seat, thereby facilitating the angle adjustment of the endoscope body;

[0020] 4. The present invention can drive the pull rope at the bottom of the positioning ring to move upward by pulling the sliding rod, thereby driving the two locking blocks to approach each other and disengaging the locking blocks from the locking grooves. Then, the hollow column can be adjusted to slide inside the telescopic sleeve, thereby facilitating the adjustment of the height of the endoscope body. After adjusting to an appropriate height as needed, the sliding rod is released, so that the locking blocks can be driven to snap into the corresponding locking grooves under the elastic force of the connecting spring, thereby realizing convenient and stable limiting of the hollow column after adjustment.

[0021] 5. The present invention can drive the endoscope body to be raised and lowered by rotating the threaded shaft under the action of the threads of the threaded sleeve and the threaded shaft, thereby accurately controlling the depth of the endoscope body inserted into the patient's nasal cavity.

[0022] 6. In the present invention, the bottoms of the two support plates are inserted into the patient's nasal cavity, and then the two-way screw is rotated so that the two connecting sliders can be driven away from each other under the action of the threads of the screw sleeve, so that the patient's nasal cavity can be opened by the two support plates, thereby greatly facilitating the insertion of the endoscope. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 It is a schematic diagram of the structure of the neurosurgery transnasal endoscopic instrument of the present invention;

[0025] Figure 2 It is a structural schematic diagram of another viewing angle of the neurosurgery transnasal endoscopic instrument of the present invention;

[0026] Figure 3 It is a schematic diagram of the cross-sectional structure of the neurosurgery transnasal endoscopic instrument of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the rotating mounting mechanism in the neurosurgery transnasal endoscopic instrument of the present invention;

[0028] Figure 5 It is a structural schematic diagram of another perspective of the rotating mounting mechanism of the neurosurgery transnasal endoscopic instrument of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the lifting support mechanism in the neurosurgery transnasal endoscopic instrument of the present invention;

[0030] Figure 7 It is a structural schematic diagram of another perspective of the lifting support mechanism of the neurosurgery transnasal endoscopic instrument of the present invention;

[0031] Figure 8 For the present invention Figure 7 A schematic diagram of the local enlarged structure at point A in the middle;

[0032] Fig. 9 It is a schematic diagram of the structure of the fixing mechanism installed in the neurosurgery transnasal endoscopic instrument of the present invention;

[0033] Fig.10 It is a schematic diagram of the structure of the inspection mechanism in the neurosurgery transnasal endoscopic instrument of the present invention;

[0034] Fig.11 It is a schematic diagram of the structure of the distraction mechanism in the neurosurgery transnasal endoscopic instrument of the present invention.

[0035] Description of Figure Numbers:

[0036] 1. Rotating installation mechanism; 2. Lifting support mechanism; 3. Installation and fixing mechanism; 4. Inspection mechanism; 5. Opening mechanism;

[0037] 101. Rotating mounting seat; 1011. Damping rotating shaft;

[0038] 201, telescopic sleeve; 2011, hollow column;

[0039] 202, locking block; 2021, locking groove; 2022, connecting spring;

[0040] 203, fixed partition; 2031, sliding rod; 2032, positioning ring; 2033, first set of springs; 2034, pull rope; 2035, guide pulley;

[0041] 301, fixed frame; 302, fixed pull rod; 303, pressing block; 304, second set of springs; 305, pressing pad;

[0042] 401, endoscope body; 4011, through hole;

[0043] 402, support frame; 4021, threaded shaft; 4022, threaded sleeve; 4023, fixed sleeve; 4024, limit slider; 4025, limit slide groove;

[0044] 501, support plate; 5011, arc-shaped notch;

[0045] 502, adjusting frame; 5021, bidirectional screw; 5022, screw sleeve; 5023, connecting slider; 50231, mounting slide groove; 5024, positioning slide rod. DETAILED DESCRIPTION

[0046] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0047] Please refer to Figures 1 to 11 As shown, an embodiment of the present invention provides a neurosurgery transnasal endoscopic instrument, comprising: a rotatable and adjustable rotating mounting mechanism 1, both sides of the bottom of the rotating mounting mechanism 1 are installed with height-adjustable lifting support mechanisms 2, the bottom of the lifting support mechanism 2 is installed with a mounting and fixing mechanism 3 for fixing the lifting support mechanism 2, the top of the rotating mounting mechanism 1 is installed with a telescopic and adjustable inspection mechanism 4 for patient nasal cavity detection, and an opening mechanism 5 for opening the patient's nasal cavity is installed on the rotating mounting mechanism 1 and at a position corresponding to the inspection mechanism 4;

[0048] By adopting the above technical solution, not only can the angle of the endoscope body 401 be freely adjusted according to the needs of the patient, so that the endoscope body 401 is aimed at the patient's nasal cavity, but both hands can be freed when examining the patient's nasal cavity, thereby reducing the workload of medical staff. At the same time, when inspecting the patient's nasal cavity, the patient's nasal cavity can be stretched open, thereby facilitating the insertion of the lens and increasing the clarity of observation of the patient's nasal cavity.

[0049] Please refer to Figures 1 to 11 As shown, the rotating mounting mechanism 1 includes a rotating mounting seat 101, and damping shafts 1011 are rotatably mounted on both sides of the rotating mounting seat 101. By adopting the above technical solution, the mounting seat 101 can be rotated, and then the angle of the endoscope body 401 can be adjusted under the rotation action of the damping shaft 1011. At the same time, the self-locking function of the damping shaft 1011 itself enables the endoscope body 401 to be effectively positioned after adjusting any angle.

[0050] Please refer to Figures 1 to 11 As shown, the lifting support mechanism 2 includes a telescopic sleeve 201 , on the inner wall of which is slidably connected a lifting and lowering adjustable hollow column 2011 , and the side of the hollow column 2011 is rotatably connected to the rotating mounting seat 101 via a damping shaft 1011 .

[0051] Among them, locking blocks 202 are provided on both sides of the hollow column 2011, and a plurality of locking grooves 2021 arranged at equal distances are provided on the inner wall of the telescopic sleeve 201 and corresponding to the position of the locking blocks 202. A fixed partition 203 is fixedly connected to the inner wall of the hollow column 2011, and a sliding pull rod 2031 is slidably connected to the fixed partition 203. A positioning ring 2032 is fixedly connected to the bottom of the sliding pull rod 2031. A first set of springs 2033 is sleeved on the sliding pull rod 2031 located between the positioning ring 2032 and the fixed partition 203. Two symmetrically arranged pull ropes 2034 are fixedly connected to the bottom of the positioning ring 2032. A guide pulley 2035 is installed on the inner wall of the hollow column 2011 and corresponding to the position of the pull rope 2034, and the end of the pull rope 2034 away from the positioning ring 2032 is connected to the locking block 202. The side of the hollow column 2011 is fixedly connected, and the locking block 202 is fixedly connected with a connecting spring 2022 on one side close to the hollow column 2011. By adopting the above technical solution, by pulling the sliding pull rod 2031, the pull rope 2034 at the bottom of the positioning ring 2032 can be driven to move upward, thereby driving the two locking blocks 202 to approach each other and making the locking block 202 disengage from the locking groove 2021. Then the hollow column 2011 can be adjusted to slide inside the telescopic sleeve 201, so as to facilitate the adjustment of the height of the endoscope body 401. After adjusting to the appropriate height as needed, the sliding pull rod 2031 is released, so that the locking block 202 can be driven to be stuck in the corresponding locking groove 2021 under the elastic force of the connecting spring 2022, thereby realizing convenient and stable limiting of the hollow column 2011 after adjustment.

[0052] Please refer to Figures 1 to 11 As shown, the installation and fixing mechanism 3 includes a fixing frame 301 fixedly connected to the bottom of the telescopic sleeve 201, the bottom of the fixing frame 301 is slidably connected with a fixing rod 302, the top of the fixing rod 302 is fixedly connected with a clamping block 303, and the fixing rod 302 located between the clamping block 303 and the fixing frame 301 is sleeved with a second set of springs 304, the top of the inner wall of the fixing frame 301 and the top of the clamping block 303 are both fixedly connected with a clamping pad 305. By adopting the above technical solution, the fixing rod 302 is pulled, and then the second set of springs 304 can be compressed by the clamping block 303, and then the fixing frame 301 is clamped to the bedside of the bed, and then the fixing rod 302 is released, so that the clamping block 303 can be driven to be clamped at the edge of the bed under the elastic force of the second set of springs 304, thereby realizing convenient fixation of the present invention.

[0053] Please refer to Figures 1 to 11 As shown, the inspection mechanism 4 includes an endoscope body 401 that can be raised and lowered, and a through hole 4011 is opened on the rotating mounting seat 101 and corresponds to the position of the endoscope body 401.

[0054] Among them, the inspection mechanism 4 also includes a support frame 402 fixedly connected to the rotating mounting seat 101, and a threaded shaft 4021 is rotatably installed at the bottom of the inner wall of the support frame 402 through a bearing, and a threaded sleeve 4022 is threadedly connected to the threaded shaft 4021, and the side of the threaded sleeve 4022 is fixedly connected to the endoscope body 401 through a fixed sleeve 4023, and the side of the threaded sleeve 4022 is fixedly connected to the endoscope body 401 through a fixed sleeve 4023. A limiting slider 4024 is fixedly connected to the side of the threaded sleeve 4022, and a limiting groove 4025 matching the limiting slider 4024 is provided on the support frame 402 and at a position corresponding to the limiting slider 4024. By adopting the above technical solution, by rotating the threaded shaft 4021, the endoscope body 401 can be driven to be raised and lowered under the action of the threads of the threaded sleeve 4022 and the threaded shaft 4021, so that the depth of the endoscope body 401 inserted into the patient's nasal cavity can be accurately controlled.

[0055] Please refer to Figures 1 to 11 As shown, the opening mechanism 5 includes two freely opening and closing support plates 501 , and arc-shaped notches 5011 for the endoscope body 401 to pass through are formed at opposite positions of the two support plates 501 .

[0056] Among them, the stretching mechanism 5 also includes an adjustment frame 502 fixedly connected to the side of the rotating mounting seat 101, and a bidirectional screw 5021 is rotatably installed on the adjustment frame 502 through a bearing, and two symmetrically arranged screw sleeves 5022 are threadedly connected to the bidirectional screw 5021, and the sides of the two screw sleeves 5022 are fixedly connected with connecting sliders 5023, and a mounting groove 50231 for slidingly installing the connecting slider 5023 is provided on the rotating mounting seat 101 and at a position corresponding to the connecting slider 5023. The above technical solution is adopted to insert the bottom of the two support plates 501 into the patient's nasal cavity, and then by rotating the bidirectional screw 5021, the two connecting sliders 5023 can be driven away from each other under the action of the threads of the screw sleeves 5022, so that the patient's nasal cavity can be stretched open by the two support plates 501, thereby greatly facilitating the insertion of the endoscope body 401.

[0057] Please refer to Figures 1 to 11 As shown, a positioning slide bar 5024 for limiting the connection slide block 5023 is fixedly connected to the inner wall of the installation slide groove 50231, and the positioning slide bar 5024 is slidably connected to the connection slide block 5023;

[0058] By adopting the above technical solution, the positioning slide bar 5024 is provided to limit the connection slider 5023, thereby increasing the stability of the connection slider 5023 driving the support plate 501 to move.

[0059] The working principle of the present invention is:

[0060] First, by pulling the fixing rod 302, the second set of springs 304 can be compressed by the clamping block 303, and then the fixing frame 301 is clamped to the bedside of the bed, and then the fixing rod 302 is released, so that the clamping block 303 can be clamped at the edge of the bed under the elastic force of the second set of springs 304, thereby achieving convenient fixation of the present invention, and then by pulling the rotating mounting seat 101, the rotating mounting seat 101 can be rotated around the damping shaft 1011, thereby facilitating the angle adjustment of the endoscope body 401, and at the same time, by pulling the sliding rod 2031, the pull rope 2034 at the bottom of the positioning ring 2032 can be driven to move upward, and then the two locking blocks 202 can be driven to approach each other, and the locking blocks 202 can be disengaged from the locking groove 2021, and then the hollow column 2011 can be adjusted to slide inside the telescopic sleeve 201, so as to facilitate the adjustment of the height of the endoscope body 401. After adjusting to an appropriate height as needed, the sliding pull rod 2031 is released, so that the locking block 202 can be driven to snap into the corresponding locking groove 2021 under the elastic force of the connecting spring 2022, so that the convenient and stable limiting of the hollow column 2011 after adjustment can be achieved. When the support plate 501 is adjusted to align with the patient's nasal cavity, the bottom of the two support plates 501 is inserted into the patient's nasal cavity, and then the two-way screw 5021 is rotated, so that the two connecting sliders 5023 can be driven to move away from each other under the action of the thread of the screw sleeve 5022, so that the patient's nasal cavity can be opened through the two support plates 501, thereby greatly facilitating the insertion of the endoscope body 401, and finally, the threaded shaft 4021 is rotated, so that the endoscope body 401 can be driven to be raised and lowered under the action of the threads of the threaded sleeve 4022 and the threaded shaft 4021, so that the depth of the endoscope body 401 inserted into the patient's nasal cavity can be accurately controlled.

[0061] The above description shows and describes several preferred embodiments of the present invention, but as before, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept of this article through the above teachings or the technology or knowledge of the relevant field. And the changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A neurosurgery transnasal endoscopic instrument, characterized in that: The invention comprises a rotatable and adjustable rotating installation mechanism (1), height-adjustable lifting support mechanisms (2) are installed on both sides of the bottom of the rotating installation mechanism (1), a mounting and fixing mechanism (3) for fixing the lifting support mechanism (2) is installed at the bottom of the lifting support mechanism (2), a telescopic and adjustable inspection mechanism (4) for detecting the nasal cavity of a patient is installed at the top of the rotating installation mechanism (1), and an opening mechanism (5) for opening the nasal cavity of a patient is installed on the rotating installation mechanism (1) and at a position corresponding to the inspection mechanism (4).

2. A neurosurgery transnasal endoscopic instrument according to claim 1, characterized in that: The rotating installation mechanism (1) comprises a rotating installation seat (101), and damping shafts (1011) are rotatably installed on both sides of the rotating installation seat (101).

3. A neurosurgery transnasal endoscopic instrument according to claim 2, characterized in that: The lifting support mechanism (2) comprises a telescopic sleeve (201), a hollow column (2011) which is slidably connected to the inner wall of the telescopic sleeve (201) and can be raised and lowered, and a side surface of the hollow column (2011) is rotatably connected to the rotating mounting seat (101) via the damping rotating shaft (1011).

4. A neurosurgery transnasal endoscopic instrument according to claim 3, characterized in that: Locking blocks (202) are provided on both sides of the hollow column (2011); a plurality of locking grooves (2021) arranged at equal distances are provided on the inner wall of the telescopic sleeve (201) and correspond to the positions of the locking blocks (202); a fixed partition (203) is fixedly connected to the inner wall of the hollow column (2011); and a sliding rod (2031) is slidably connected to the fixed partition (203).

5. A neurosurgery transnasal endoscopic instrument according to claim 4, characterized in that: The bottom of the sliding rod (2031) is fixedly connected to a positioning ring (2032), a first spring (2033) is sleeved on the sliding rod (2031) between the positioning ring (2032) and the fixed partition (203), and the bottom of the positioning ring (2032) is fixedly connected to two symmetrically arranged pull ropes (2034).

6. A neurosurgery transnasal endoscopic instrument according to claim 5, characterized in that: A guide pulley (2035) is installed on the inner wall of the hollow column (2011) and at a position corresponding to the pull rope (2034), and the end of the pull rope (2034) away from the positioning ring (2032) is fixedly connected to the side of the locking block (202), and the side of the locking block (202) close to the hollow column (2011) is fixedly connected to a connecting spring (2022).

7. A neurosurgery transnasal endoscopic instrument according to claim 6, characterized in that: The installation and fixing mechanism (3) comprises a fixing frame (301) fixedly connected to the bottom of the telescopic sleeve (201), the bottom of the fixing frame (301) is slidably connected to a fixing rod (302), the top of the fixing rod (302) is fixedly connected to a clamping block (303), a second spring (304) is sleeved on the fixing rod (302) located between the clamping block (303) and the fixing frame (301), and a clamping pad (305) is fixedly connected to the top of the inner wall of the fixing frame (301) and the top of the clamping block (303).

8. A neurosurgery transnasal endoscopic instrument according to claim 7, characterized in that: The inspection mechanism (4) comprises an endoscope body (401) that can be raised and lowered and adjusted, and a through hole (4011) is provided on the rotating mounting seat (101) at a position corresponding to the endoscope body (401).

9. A neurosurgery transnasal endoscopic instrument according to claim 8, characterized in that: The inspection mechanism (4) further comprises a support frame (402) fixedly connected to the rotating mounting seat (101), a threaded shaft (4021) being rotatably mounted on the bottom of the inner wall of the support frame (402) via a bearing, and a threaded sleeve (4022) being threadedly connected to the threaded shaft (4021).

10. A neurosurgery transnasal endoscopic instrument according to claim 9, characterized in that: The side of the threaded sleeve (4022) is fixedly connected to the endoscope body (401) via a fixed sleeve (4023), and the side of the threaded sleeve (4022) is fixedly connected to a limiting slider (4024). A limiting groove (4025) matching the limiting slider (4024) is provided on the support frame (402) at a position corresponding to the limiting slider (4024).

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