Clinical nasopharyngoscope for nasopharyngeal carcinoma radiotherapy

Abstract

The invention discloses a nasopharyngoscope for nasopharyngeal carcinoma radiotherapy clinic, and relates to the technical field of medical instruments, the nasopharyngoscope comprises a hand-held handle, the hand-held handle comprises a holding tube and a storage sliding roller slidably arranged on the inner side of the holding tube, and the outer wall of the storage sliding roller is provided with a storage winding groove; according to the clinical nasopharyngeal mirror for nasopharyngeal carcinoma radiotherapy, the storage sliding roller is slidably connected to the inner side of the holding tube, the storage winding groove used for winding and storing the insertion tube is formed in the storage sliding roller, and meanwhile, clamping and fixing between the holding tube and the storage sliding roller are achieved through the locking and clamping mechanism, so that the clinical nasopharyngeal mirror for nasopharyngeal carcinoma radiotherapy has the function of storing and hiding the insertion tube; compared with the prior art, not only is the occupied space reduced, but also the tip detection lens is more attractive, the butt joint pipe is fixed to the tip detection lens, butt joint and fixation between the butt joint pipe and the tip hard pipe are achieved through the locking butt joint mechanism, detachable split type installation of the tip detection lens is achieved, and therefore the tip detection lens can be conveniently and rapidly disassembled and assembled.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a nasopharyngeal endoscope for clinical radiotherapy of nasopharyngeal carcinoma. Background Art

[0002] Nasopharyngeal carcinoma refers to a malignant tumor that occurs on the top and side walls of the nasopharyngeal cavity. It is one of the most common malignant tumors, with the highest incidence rate among malignant tumors of the ear, nose and throat. The causes of nasopharyngeal carcinoma are multifaceted, including genetic factors, viral infection (such as Epstein-Barr virus), environmental factors, etc. The clinical manifestations of nasopharyngeal carcinoma are diverse, and common symptoms include nasal congestion, blood in mucus, stuffy ears, hearing loss, diplopia and headache. The treatment of nasopharyngeal carcinoma mainly includes radiotherapy, chemotherapy, surgery and biological therapy.

[0003] Radiotherapy is the first choice for nasopharyngeal carcinoma, especially for early-stage nasopharyngeal carcinoma. Radiotherapy alone can achieve good results. Nasopharyngeal endoscopy can visually observe the tumor shrinkage in the nasopharynx and understand the effect of radiotherapy, so as to timely detect mucosal reactions caused by radiotherapy, such as congestion, edema, ulcers, etc., to facilitate the adoption of corresponding measures, and is more conducive to early detection of tumor residues or recurrences and improve the success rate of treatment.

[0004] Most of the existing nasopharyngeal endoscope products have a simple structure and do not have the function of storing and hiding the insertion tube, resulting in the insertion tube being exposed when the nasopharyngeal endoscope is not in use, which takes up a lot of space and is not aesthetically pleasing, and to a certain extent has a negative impact on the cleanliness of the clinical environment. In addition, the detection end of the existing nasopharyngeal endoscope products is generally fixedly connected to the insertion tube in an integrated manner, which makes it inconvenient to disassemble and assemble conveniently, thereby causing certain difficulties in the daily maintenance and repair of the detection end, and it is inconvenient to use. Therefore, the present invention proposes a nasopharyngeal endoscope for clinical radiotherapy of nasopharyngeal carcinoma to solve the problems existing in the prior art. Summary of the invention

[0005] In view of the above problems, the purpose of the present invention is to propose a nasopharyngeal endoscope for clinical radiotherapy of nasopharyngeal carcinoma, so as to solve the problem that existing nasopharyngeal endoscope products do not have the function of storing and hiding the insertion tube, and the detection end is generally fixedly connected to the insertion tube in an integrated manner, resulting in inconvenience for convenient disassembly and assembly.

[0006] In order to achieve the purpose of the present invention, the present invention is implemented through the following technical scheme: a nasopharyngeal endoscope for clinical radiotherapy of nasopharyngeal carcinoma, including a hand-held grip, the hand-held grip includes a grip tube and a storage roller slidably arranged on the inner side of the grip tube, a storage winding groove is provided on the outer wall of the storage roller, the grip tube and the storage roller are positioned and fixed by a locking and clamping mechanism, an operating handle is fixed to the end of the storage roller close to the grip tube opening, the end of the operating handle away from the storage roller is connected to a tip bending tube through an insertion tube, an exposure groove adapted to the insertion tube is symmetrically provided on one side of the grip tube close to the operating handle, a tip hard tube is fixed to the end of the bending tube away from the insertion tube, a docking tube is butt-jointed to the end of the tip hard tube away from the tip bending tube, a tip detection lens is fixed to the end of the docking tube away from the tip hard tube, and the tip hard tube and the docking tube are sealed and butt-jointed by a locking and butt-jointing mechanism.

[0007] A further improvement is that a pinhole camera is provided on the side of the tip detection lens away from the docking tube, LED light sources are provided on both sides of the pinhole camera, and an electric heating ring with a built-in temperature control component is provided on the side of the tip detection lens close to the pinhole camera.

[0008] A further improvement is that the locking docking mechanism includes a threaded sleeve slidably arranged on the outside of the docking tube and an externally threaded connecting ring fixed to the outside of the front end hard tube, an internal thread matching the externally threaded connecting ring is provided on the inner side of the threaded sleeve, and a limiting ring matching the threaded sleeve is fixed to the outer wall of the docking tube.

[0009] Further improvements are: a sealing rubber ring is fixed to one end of the tip hard tube close to the butt tube, an annular sealing groove adapted to the sealing rubber ring is opened at one end of the butt tube close to the tip hard tube, an electrical connection socket is fixed to the side of the tip hard tube away from the bending tube, and an electrical connection plug is fixed to the side of the butt tube away from the tip detection lens.

[0010] Further improvements are: the inner walls on both sides of the grip tube are provided with limit slide grooves, the front and rear sides of the storage slide roller are fixed with limit slide strips adapted to the limit slide grooves, the outer wall of the grip tube is provided with an embedding groove, and the outer side of the grip tube is covered with a silicone sleeve embedded in the embedding groove.

[0011] A further improvement is that the locking and clamping mechanism includes a through groove symmetrically opened on the grip tube and a groove symmetrically opened on the receiving slide roller, the interior of the groove is connected with a convex column extending out of the groove via a limit spring, a pressure block is slidably provided inside the through groove, and the end of the pressure block away from the convex column is connected to a button located outside the through groove via a connecting rod.

[0012] A further improvement is that: the outer wall of the pressing block is symmetrically fixed with limiting protrusions, and the inner wall of the through groove is symmetrically provided with limiting slide rails adapted to the limiting protrusions.

[0013] A further improvement is that the locking and clamping mechanism includes a first semicircular threaded column symmetrically fixed to the outer wall of the grip tube and a second semicircular threaded column symmetrically fixed to the outer wall of the operating handle, and a threaded cap is threadedly sleeved on the first semicircular threaded column and the second semicircular threaded column.

[0014] The beneficial effects of the present invention are as follows: the present invention connects the storage roller by sliding on the inner side of the grip tube, and provides a storage winding groove for winding and storing the insertion tube on the storage roller, and realizes the clamping and fixing between the grip tube and the storage roller by a locking and clamping mechanism, so that the nasopharyngeal endoscope for clinical radiotherapy of nasopharyngeal carcinoma has the function of storing and hiding the insertion tube, which not only reduces the occupied space but also makes it more beautiful, and ensures the cleanliness of the clinical environment to a certain extent; and by fixing the docking tube on the tip detection lens and realizing the docking and fixing between the docking tube and the tip hard tube by a locking and docking mechanism, the detachable split installation of the tip detection lens is realized, so that the tip detection lens is easy to be disassembled and assembled, thereby bringing certain convenience to its daily maintenance and repair work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a front view of the first embodiment of the present invention;

[0016] Figure 2 It is a right side view of the front end detection lens of the first embodiment of the present invention;

[0017] Figure 3 is a cross-sectional view of a tip hard pipe and a butt-joint pipe in Embodiment 1 of the present invention;

[0018] Figure 4 is a cross-sectional view of a handheld handle according to the first embodiment of the present invention;

[0019] Figure 5 The present invention Figure 4 A in the enlarged view;

[0020] Figure 6 is a cross-sectional view of a handheld handle of a second embodiment of the present invention;

[0021] Figure 7 The present invention Figure 6 The enlarged view of point B in the figure;

[0022] Figure 8 It is a schematic diagram of the three-dimensional structure of the storage sliding roller according to the first embodiment of the present invention.

[0023] Among them: 1. Hand grip; 2. Storage winding groove; 3. Operating handle; 4. Insertion tube; 5. Bending tube; 6. Exposure groove; 7. Tip hard tube; 8. Butt tube; 9. Tip detection lens; 10. Pinhole camera; 11. LED light source; 12. Electric heating ring; 13. Threaded sleeve; 14. External thread connecting ring; 15. Internal thread; 16. Limiting ring; 17. Sealing rubber ring; 18. Annular sealing groove; 19. Limiting slide groove; 20. Limiting slide bar; 21. Fitting groove; 22. Silicone sleeve; 23. Through groove; 24. Groove; 25. Limiting spring; 26. Boss; 27. Press block; 28. Connecting rod; 29. ​​Button; 30. Limiting convex block; 31. Limiting slide rail; 32. First semicircular threaded column; 33. Second semicircular threaded column; 34. Threaded cap; 101. Grip tube; 102. Storage roller. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] With the improvement of medical level, various diseases can be quickly detected or treated with the help of current medical equipment. Nasopharyngeal carcinoma is prone to occur in the nasopharynx, which is deep and hidden. The simplest and most convenient way to examine the nasopharynx in clinical practice is nasopharyngeal endoscopy, which is the core tool for the whole process of radiotherapy for nasopharyngeal carcinoma, especially in diagnosis, target area optimization and follow-up.

[0026] Currently, in clinical radiotherapy of the nasopharynx, the help of a nasopharyngeal endoscope is often required. When the doctor examines the patient through the nasopharyngeal endoscope, the doctor needs to insert the nasopharyngeal endoscope into the patient's nasal cavity. The nasopharyngeal endoscope can be used to clearly observe the lesions of the nasopharyngeal mucosa and determine the location, range and surface characteristics of the tumor. Based on the findings in the prior art, most of the existing nasopharyngeal endoscope products have the problem of being inconvenient to store and hide the insertion tube, and being inconvenient to easily disassemble the detection end.

[0027] Embodiment 1

[0028] according to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 8As shown, the present embodiment provides a nasopharyngoscope for clinical radiotherapy of nasopharyngeal carcinoma, including a handheld grip 1 consisting of a grip tube 101 and a storage roller 102, wherein the storage roller 102 is slidably arranged on the inner side of the grip tube 101, and the right end of the grip tube 101 is designed to be open, so that the storage roller 102 can slide out from the right side of the grip tube 101, and the grip tube 101 and the storage roller 102 are positioned and fixed by a locking and clamping mechanism, so that the grip tube 101 and the storage roller 102 can be limited to prevent the storage roller 102 from automatically sliding out, and a locking mechanism for controlling the nasopharyngeal carcinoma is fixed on the right end of the storage roller 102. An operating handle 3 of a nasopharyngeal mirror for clinical radiotherapy of pharyngeal cancer, an insertion tube 4 is fixed to the right end of the operating handle 3, a storage winding groove 2 is provided on the outer wall of a storage roller 102, so as to wind and store the insertion tube 4, the storage roller 102 is connected by sliding on the inner side of a holding sleeve 101, and a storage winding groove 2 for winding and storing the insertion tube 4 is provided on the storage roller 102, and the holding sleeve 101 and the storage roller 102 are clamped and fixed by a locking clamping mechanism, so that the nasopharyngeal mirror for clinical radiotherapy of nasopharyngeal cancer has the function of storing and hiding the insertion tube 4;

[0029] A tip bending tube 5 controlled by an operating handle 3 is fixed to the right end of the insertion tube 4. A toggle hand wheel for controlling the bending adjustment of the tip bending tube 5 is provided on the operating handle 3. A front-to-back symmetrically distributed exposure groove 6 is opened on the right side of the grip tube 101. The exposure groove 6 is adapted to the insertion tube 4 so that the end of the insertion tube 4 can pass through after being stored. A tip hard tube 7 is fixed to the right end of the bending tube 5. A docking tube 8 is provided on the right side of the tip hard tube 7, and the tip hard tube 7 and the docking tube 8 are sealed and docked by a locking docking mechanism. A tip detection lens 9 for detecting nasopharyngeal lesions of patients is fixed to the right end of the docking tube 8. By fixing the docking tube 8 on the tip detection lens 9 and realizing the docking and fixing between the docking tube 8 and the tip hard tube 7 by the locking docking mechanism, the detachable split installation of the tip detection lens 9 is realized, so that the tip detection lens 9 is easy to be disassembled and assembled conveniently.

[0030] A steel wire is wound around the toggle handwheel on the operating handle 3 of the present design example, and the other end of the steel wire passes through the insertion tube 4 and is connected to the bending tube 5. The bending adjustment of the bending tube 5 is based on the principle of mechanical push-pull wire. The steel wire is pulled by rotating the toggle handwheel on the operating handle 3. When the steel wire is pulled, the bending tube 5 is bent, which can drive the tip detection lens 9 to adjust the direction and angle. The operating handle 3 is also provided with a power switch and a data cable connector for connecting an external display to transmit the monitored video data. The bending adjustment of the bending tube 5 and the video data transmission of the tip detection lens 9 are both existing technologies and will not be elaborated here.

[0031] A pinhole camera 10 for shooting is provided on the right side of the tip detection lens 9. LED light sources 11 fixed on the tip detection lens 9 are provided on both sides of the pinhole camera 10 to play a fill light role and improve the shooting clarity of the pinhole camera 10. An electric heating ring 12 fixed on the right end face of the tip detection lens 9 is provided around the pinhole camera 10. The electric heating ring 12 has its own temperature control component to prevent damage to the human body caused by excessive temperature. The electric heating ring 12 preheats the right side of the tip detection lens 9 to prevent the shooting lens of the pinhole camera 10 from generating water mist due to the temperature difference between inside and outside the body.

[0032] The locking docking mechanism includes a threaded sleeve 13 and an externally threaded connecting ring 14, wherein the threaded sleeve 13 is slidably arranged on the outside of the docking tube 8, the externally threaded connecting ring 14 is fixed to the outer wall of the front end hard tube 7, an internal thread 15 is provided on the left inner wall of the threaded sleeve 13, and the internal thread 15 is adapted to the externally threaded connecting ring 14, a limiting ring 16 is fixed to the outer wall of the docking tube 8, the limiting ring 16 is located on the inner side of the threaded sleeve 13 and is adapted to the threaded sleeve 13, the threaded sleeve 13 is screwed on the externally threaded connecting ring 14 to achieve the docking of the docking tube 8 and the front end hard tube 7, and the threaded sleeve 13 is continuously rotated to the left, and under the limiting obstruction of the limiting ring 16, the docking tube 8 can be driven to tightly dock with the front end hard tube 7.

[0033] A sealing rubber ring 17 is fixed to the right end of the tip hard tube 7, and an annular sealing groove 18 adapted to the sealing rubber ring 17 is opened at the left end of the butt joint tube 8. When the tip hard tube 7 and the butt joint tube 8 are butt jointed, the sealing rubber ring 17 is embedded in the annular sealing groove 18 to achieve sealing between the tip hard tube 7 and the butt joint tube 8. An electrical connection socket is fixed to the side of the tip hard tube 7 away from the bending tube 5. The electrical connection socket is connected to the battery and other electronic devices inside the operating handle 3 through electric wires. An electrical connection plug is fixed to the side of the butt joint tube 8 away from the tip detection lens 9. The electrical connection plug is connected to various electronic devices on the tip detection lens 9 through electric wires. When the tip hard tube 7 and the butt joint tube 8 are butt jointed, the electrical connection plug is embedded in the electrical connection socket to achieve power supply.

[0034] The inner wall of the grip tube 101 is provided with limiting slide grooves 19 which are symmetrically distributed front to back, and the left and right sides of the storage slide roller 102 are fixed with limiting slide bars 20 which are symmetrically distributed front to back, and the limiting slide bars 20 are adapted to the limiting slide grooves 19 to realize the sliding connection of the storage slide roller 102 in the grip tube 101, and the outer wall of the grip tube 101 is provided with an embedding groove 21, and the outer side of the grip tube 101 is provided with a silicone sleeve 22 which is embedded in the embedding groove 21, thereby improving the comfort of medical staff in grasping the grip tube 101.

[0035] The locking mechanism includes a through slot 23 and a groove 24. The through slot 23 is provided with two sides and is symmetrically opened at the upper and lower ends of the right side of the grip tube 101. The groove 24 is provided with two groups and is symmetrically opened at the upper and lower ends of the right side of the storage roller 102. The inside of the groove 24 is connected with a protrusion 26 through a limit spring 25. The protrusion 26 is pushed out of the groove 24 and extends into the through slot 23 under the elastic action of the limit spring 25, so as to realize the clamping connection between the grip tube 101 and the storage roller 102. A pressure block 27 is slidably provided inside the through slot 23. The two groups of pressure blocks 27 A connecting rod 28 is fixed at the opposite end, and the end of the connecting rod 28 away from the pressure block 27 is located outside the through slot 23 and is fixed with a button 29. By pressing the button 29 to drive the pressure block 27 to squeeze the boss 26 out of the through slot 23, the clamping connection between the gripping tube 101 and the storage roller 102 can be released. Limiting protrusions 30 are fixed to the outer walls on both sides of the pressure block 27, and limiting slide rails 31 are provided on the inner walls on both sides of the through slot 23, and the limiting slide rails 31 are adapted to the limiting protrusions 30 to realize the sliding connection of the pressure block 27 in the through slot 23.

[0036] Embodiment 2

[0037] according to Figure 6 and Figure 7 As shown, this embodiment provides a nasopharyngeal endoscope for clinical radiotherapy of nasopharyngeal carcinoma, which differs from the first embodiment in that the locking and clamping mechanism includes a first semicircular threaded column 32 and a second semicircular threaded column 33, wherein the first semicircular threaded column 32 is provided with and symmetrically fixed to the upper and lower ends of the right outer wall of the grip tube 101, and the second semicircular threaded column 33 is provided with two groups and symmetrically fixed to the upper and lower ends of the right outer wall of the operating handle 3, and the first semicircular threaded column 32 and the second semicircular threaded column 33 are commonly threadedly sleeved with a threaded cap 34, and the clamping connection between the grip tube 101 and the storage roller 102 is achieved by screwing the threaded cap 34 onto the first semicircular threaded column 32 and the second semicircular threaded column 33.

[0038] When the nasopharyngeal endoscope for nasopharyngeal carcinoma radiotherapy is actually used, the medical staff picks up the nasopharyngeal endoscope for nasopharyngeal carcinoma radiotherapy by holding the handheld handle 1, turns on the power switch, and inserts the front detection lens 9 together with the insertion tube 4 into the patient's nose until the front detection lens 9 reaches the patient's nasopharyngeal lesion. Then, the pinhole camera 10 on the front detection lens 9 is used to shoot a video of the patient's nasopharyngeal lesion. The shot video data is uploaded to an external display, and the medical staff can observe the internal lesion status of the patient's nasopharynx.

[0039] When the nasopharyngeal endoscope for clinical radiotherapy of nasopharyngeal carcinoma is not in use, the locking and clamping mechanism is first used to release the clamping and fixing between the grip tube 101 and the storage roller 102, and then the storage roller 102 is slid to the right from the grip tube 101 until the storage winding groove 2 is exposed, and then the insertion tube 4 is wound in the storage winding groove 2, and then the storage roller 102 is slid back into the grip tube 101, and the end of the insertion tube 4 is passed through the exposure groove 6 to avoid affecting the clamping between the grip tube 101 and the storage roller 102, and then the grip tube 101 and the storage roller 102 are clamped and fixed by the locking and clamping mechanism, so that the insertion tube 4 is stored inside the grip tube 101, and the storage work is completed, so that the nasopharyngeal endoscope for clinical radiotherapy of nasopharyngeal carcinoma occupies less space when stored, is more beautiful, and also makes the clinical environment more tidy;

[0040] When it is necessary to remove the tip detection lens 9 from the nasopharyngeal endoscope used for clinical radiotherapy of nasopharyngeal carcinoma for maintenance and repair, the locking docking mechanism is used to release the docking fixation between the tip hard tube 7 and the docking tube 8, and the tip detection lens 9 can be directly removed together with the docking tube 8 to achieve convenient disassembly, and then the corresponding maintenance and repair work can be carried out on the electronic components on the tip detection lens 9. After the maintenance and repair is completed, the tip hard tube 7 and the end of the docking tube 8 are first docked together, and then the locking docking mechanism is used to dock and fix the tip hard tube 7 and the docking tube 8 together to achieve convenient installation.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A nasopharyngeal endoscope for clinical radiotherapy of nasopharyngeal carcinoma, comprising a handheld handle (1), characterized in that: The hand-held grip (1) comprises a grip tube (101) and a storage roller (102) slidably arranged on the inner side of the grip tube (101); a storage winding groove (2) is provided on the outer wall of the storage roller (102); the grip tube (101) and the storage roller (102) are positioned and fixed by a locking and clamping mechanism; an operating handle (3) is fixed to one end of the storage roller (102) close to the opening of the grip tube (101); and the end of the operating handle (3) away from the storage roller (102) is connected to a tip curved groove (2) through an insertion tube (4). The handle (101) is provided with a symmetrical exposure groove (6) adapted to the insertion tube (4) on one side of the grip tube (101) close to the operating handle (3); a tip hard tube (7) is fixed to one end of the bending tube (5) away from the insertion tube (4); a butt joint tube (8) is connected to one end of the tip hard tube (7) away from the tip bending tube (5); a tip detection lens (9) is fixed to one end of the butt joint tube (8) away from the tip hard tube (7); and the tip hard tube (7) and the butt joint tube (8) are sealed and butt jointed by a locking butt joint mechanism.

2. A nasopharyngeal endoscope for clinical radiotherapy of nasopharyngeal carcinoma according to claim 1, characterized in that: A pinhole camera (10) is provided on the side of the tip detection lens (9) away from the docking tube (8), LED light sources (11) are provided on both sides of the pinhole camera (10), and an electric heating ring (12) with a built-in temperature control component is provided on the side of the tip detection lens (9) close to the pinhole camera (10).

3. A nasopharyngeal endoscope for clinical radiotherapy of nasopharyngeal carcinoma according to claim 1, characterized in that: The locking docking mechanism comprises a threaded sleeve (13) slidably arranged on the outside of the docking tube (8) and an external threaded connecting ring (14) fixed to the outside of the front end hard tube (7); an internal thread (15) adapted to the external threaded connecting ring (14) is provided on the inner side of the threaded sleeve (13); and a limiting ring (16) adapted to the threaded sleeve (13) is fixed on the outer wall of the docking tube (8).

4. A nasopharyngeal endoscope for clinical radiotherapy of nasopharyngeal carcinoma according to claim 1, characterized in that: A sealing rubber ring (17) is fixed to one end of the tip hard tube (7) close to the butt tube (8); an annular sealing groove (18) adapted to the sealing rubber ring (17) is provided at one end of the butt tube (8) close to the tip hard tube (7); an electrical connection socket is fixed to the side of the tip hard tube (7) away from the bending tube (5); and an electrical connection plug is fixed to the side of the butt tube (8) away from the tip detection lens (9).

5. A nasopharyngeal endoscope for clinical radiotherapy of nasopharyngeal carcinoma according to claim 1, characterized in that: The inner walls of the front and rear sides of the grip tube (101) are provided with limit slide grooves (19), the front and rear sides of the storage roller (102) are fixed with limit slide bars (20) adapted to the limit slide grooves (19), the outer wall of the grip tube (101) is provided with an engaging groove (21), and the outer side of the grip tube (101) is sleeved with a silicone sleeve (22) engaged in the engaging groove (21).

6. A nasopharyngeal endoscope for clinical radiotherapy of nasopharyngeal carcinoma according to claim 1, characterized in that: The locking and clamping mechanism comprises a through groove (23) symmetrically provided on the grip tube (101) and a groove (24) symmetrically provided on the receiving slide roller (102); the interior of the groove (24) is connected to a convex column (26) extending out of the groove (24) via a limit spring (25); a pressure block (27) is slidably provided inside the through groove (23); and the end of the pressure block (27) away from the convex column (26) is connected to a button (29) located outside the through groove (23) via a connecting rod (28).

7. A nasopharyngeal endoscope for clinical radiotherapy of nasopharyngeal carcinoma according to claim 6, characterized in that: The outer wall of the pressing block (27) is symmetrically fixed with a limiting protrusion (30), and the inner wall of the through slot (23) is symmetrically provided with a limiting slide rail (31) adapted to the limiting protrusion (30).

8. A nasopharyngeal endoscope for clinical radiotherapy of nasopharyngeal carcinoma according to claim 1, characterized in that: The locking and clamping mechanism comprises a first semicircular threaded column (32) symmetrically fixed to the outer wall of the grip tube (101) and a second semicircular threaded column (33) symmetrically fixed to the outer wall of the operating handle (3); a threaded cap (34) is threadedly sleeved on the first semicircular threaded column (32) and the second semicircular threaded column (33).

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