CN116115165B

CN116115165B - Endoscope for neurosurgery

Info

Publication number: CN116115165B
Application number: CN202310411936.2A
Authority: CN
Inventors: 徐定凯; 郑茂华; 李晓
Original assignee: First Hospital of Lanzhou University
Current assignee: First Hospital of Lanzhou University
Priority date: 2023-04-18
Filing date: 2023-04-18
Publication date: 2023-06-20
Anticipated expiration: 2043-04-18
Also published as: CN116115165A

Abstract

The invention relates to the field of neurosurgery medical equipment, in particular to an endoscope for neurosurgery, which comprises a machine body mechanism, wherein a shielding protection mechanism is arranged on the machine body mechanism, an adjusting mechanism is arranged in the machine body mechanism, when a focus is required to be found, a positioning rod is pulled by a handle, and a first anti-skid pattern and a second anti-skid pattern are disengaged, so that the fixation of the second rotating rod is released, then the second rotating rod can drive a camera to conduct annular movement to conduct direction adjustment, when an angle is required to be adjusted, one end of a fixed block is pushed and pulled by the second rotating rod, and the fixed block drives the camera at the other end of the fixed block to conduct angle adjustment under the support of a supporting rod and a first rotating shaft, and the focus is found in the adjustment process, so that the fixed rod and a protective cover reduce the necessary movement and the required movement amplitude, and secondary damage caused by the movement of the fixed rod is avoided.

Description

Endoscope for neurosurgery

Technical Field

The invention relates to the field of medical equipment for neurosurgery, in particular to an endoscope for neurosurgery.

Background

The endoscope is a detection instrument integrating traditional optics, ergonomics, precision machinery, modern electronics, mathematics, software and the like, is provided with an image sensor, an optical lens, light source illumination, a mechanical device and the like, can enter the stomach through the oral cavity or enter the body through other natural pore canals and wounds, can be used for seeing lesions which cannot be displayed by X rays, and is widely applied to various fields such as neurosurgery.

However, the lens of the existing endoscope is generally fixed, the endoscope enters the body and needs to be adjusted in direction and angle to search the focus, and then the endoscope itself needs to be moved to adjust the direction and angle of the lens, and when the endoscope faces a wound, the adjustment is easy to cause secondary injury to the wound and has high adjustment difficulty, so that it is necessary to provide an endoscope for neurosurgery.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides an endoscope for neurosurgery.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides an endoscope for neurosurgery, includes organism mechanism, be provided with one on the organism mechanism and shelter from protection mechanism, the inside of organism mechanism is provided with an adjustment mechanism, just the top fixedly connected with telescopic machanism of adjustment mechanism, adjustment mechanism is connected with organism mechanism through telescopic machanism, be provided with a positioning mechanism on the bottom of organism mechanism corresponds adjustment mechanism's position, positioning mechanism offsets with adjustment mechanism.

Specifically, the organism mechanism includes a dead lever, the top fixedly connected with of dead lever is the protection casing that spherical setting was located dead lever upper surface in the protection casing has been seted up and has been the rotation groove that the annular set up, the rotation inslot internal rotation is connected with a rotatory piece that is the annular setting, the last fixed surface of rotatory piece is connected with a bracing piece, the upper end of bracing piece runs through and extends to in the protection casing, just the upper end fixedly connected with first pivot of bracing piece, the upper end of bracing piece is connected with a fixed block through first pivot rotation, fixedly connected with fixed plate on the lateral wall that the fixed block is close to the outside, fixedly connected with camera on the lateral wall that fixed block one side was kept away from to the fixed plate is located fixedly connected with two lights on the fixed plate lateral wall of camera both sides.

Specifically, shelter from protection mechanism includes the lag, the lag cup joints in the outside of protection casing, just the upper end opening part of lag is fixed to be cup jointed a rubber band, fixedly connected with connects the rope on the lateral wall of rubber band, the one end fixedly connected with cleaning cloth that the rubber band was kept away from to the connecting rope, cleaning cloth adhesion is fixed on the rubber band, just the lower extreme opening part fixedly connected with of lag two fixed ropes, two the equal fixedly connected with of lower extreme of fixed rope is a dwang, two first dwang is all rotated through the bearing and is connected on the lateral wall of dead lever, and two equal fixedly connected with is a first rotation handle on the first dwang.

Specifically, adjustment mechanism includes a fixed orifices, the fixed orifices runs through the upper surface of seting up at the dead lever, sliding connection has a second dwang in the fixed orifices, the upper end of second dwang runs through and extends to in the protection casing, just the one end fixedly connected with second pivot that the second dwang is located the protection casing, just the second pivot passes through telescopic machanism and is connected with the fixed block, the lower extreme of second dwang runs through and extends to outside the dead lever and fixedly connected with second twist grip, fixedly connected with is the first anti-skidding line that the annular set up on the pole wall of second dwang.

Specifically, telescopic machanism includes a installation cavity, the inside at the fixed block is seted up in the installation cavity, just a mounting hole has been run through on the cavity wall that the installation cavity is close to second dwang one side, sliding connection has a installation block in the installation cavity, fixedly connected with installation pole on the position that the installation block corresponds the mounting hole, the one end that the installation block was kept away from to the installation pole runs through the mounting hole and extends outside the fixed block and fixed connection in the second pivot.

Specifically, positioning mechanism includes two locating holes, two the locating hole all runs through and sets up on the lower extreme pore wall of fixed orifices, and two equal sliding connection has a locating lever in the locating hole, two the one end that the locating lever is in opposite directions all runs through and extends to the fixed orifices in and fixedly connected with a second anti-skidding line, two the second anti-skidding line all meshes with first anti-skidding line, two the one end that the locating lever kept away from all runs through and extends to outside the fixed lever and equal fixedly connected with handle, two an annular groove has all been seted up on the pore wall of locating hole, two equal sliding connection has an annular piece in the annular groove, two the annular piece is fixed to cup joint respectively on the pole wall of two locating levers, and two all overlap on the pole wall that the locating lever corresponds the annular groove position is equipped with a spring, two the both ends of spring offset with the cell wall and two annular pieces of two annular grooves respectively.

Specifically, the inside fixedly connected with wire of second dwang, one of them one end of wire runs through and extends to in the protection casing and be connected with camera and two lights, the other end of wire runs through and extends to outside the second dwang and outwards extends.

Specifically, a plurality of ball holes are formed in the rotating block in a penetrating mode, a plurality of balls are connected in the ball holes in a rolling mode, the upper ends and the lower ends of the balls extend out of the ball holes, and the upper ends and the lower ends of the balls are abutted to the groove walls of the rotating grooves.

The invention has the beneficial effects that:

(1) According to the endoscope for neurosurgery, when a focus is required to be found, the positioning rod is pulled by the handle, the first anti-skid pattern and the second anti-skid pattern are disengaged, so that the fixation of the second rotating rod is released, the camera can be driven to conduct annular movement to conduct direction adjustment through the second rotating rod, when an angle is required to be adjusted, one end of the fixed block is pushed and pulled by the second rotating rod, the camera at the other end of the fixed block is driven to conduct angle adjustment by the fixed block under the support of the support rod and the first rotating shaft, and the focus is found in the adjustment process, so that the fixed rod and the protective cover reduce the requirement for movement and the range for movement, and secondary damage caused by movement of the fixed rod is avoided.

(2) According to the endoscope for neurosurgery, when the body mechanism, the shielding protection mechanism, the adjusting mechanism, the telescopic mechanism and the positioning mechanism are arranged, the outer part of the protection cover is protected through the protection sleeve when the fixing rod and the protection cover are inserted, so that the surface of the protection cover is prevented from being stained with sundries to influence subsequent shooting when the fixing rod and the protection cover enter the endoscope, when the fixing rod and the protection cover reach a preset position, the first rotating rod is rotated through the first rotating handle, the fixing rope can be stored, the protection sleeve can be pulled by the fixing rope to pull the fixing rope to be separated from the protection cover, the cleaning cloth is pulled by the rubber band, and the top end of the protection cover is cleaned through the cleaning cloth, so that the surface of the protection cover is kept clean to avoid influencing subsequent shooting.

Drawings

The invention will be further described with reference to the drawings and examples.

FIG. 1 is a schematic view showing an insertion state structure of an endoscope for neurosurgery according to the present invention;

fig. 2 is a schematic view of a photographing state structure of an endoscope for neurosurgery provided by the invention;

FIG. 3 is a schematic view of an adjusting state structure of an endoscope for neurosurgery according to the present invention;

FIG. 4 is a schematic top view of the internal cross-sectional structure of the neurosurgical endoscope of FIG. 1 at A-A;

FIG. 5 is a schematic view showing a partial structure of a body mechanism of an endoscope for neurosurgery according to the present invention;

FIG. 6 is an enlarged view of the telescopic structure of the endoscope for neurosurgery according to the present invention;

fig. 7 is a schematic view showing a protective structure of a protective cover of an endoscope for neurosurgery.

In the figure: 1. a body mechanism; 11. a fixed rod; 12. a protective cover; 13. a rotating groove; 14. a rotating block; 15. a support rod; 16. a first rotating shaft; 17. a fixed block; 18. a fixing plate; 19. a camera; 110. a lighting lamp; 111. a ball hole; 112. a ball; 2. a shielding protection mechanism; 21. a protective sleeve; 22. a rubber band; 23. a connecting rope; 24. a cleaning cloth; 25. a fixing rope; 26. a first rotating lever; 27. a first rotary handle; 3. an adjusting mechanism; 31. a fixing hole; 32. a second rotating lever; 33. a second rotating shaft; 34. a second rotary handle; 35. a first anti-skid pattern; 36. a wire; 4. a telescoping mechanism; 41. a mounting cavity; 42. a mounting hole; 43. a mounting block; 44. a mounting rod; 5. a positioning mechanism; 51. positioning holes; 52. a positioning rod; 53. a second anti-skid pattern; 54. a handle; 55. an annular groove; 56. an annular block; 57. and (3) a spring.

Detailed Description

The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.

As shown in fig. 1-7, the neurosurgery endoscope comprises a body mechanism 1, wherein a shielding protection mechanism 2 is arranged on the body mechanism 1, an adjusting mechanism 3 is arranged in the body mechanism 1, the top end of the adjusting mechanism 3 is fixedly connected with a telescopic mechanism 4, the adjusting mechanism 3 is connected with the body mechanism 1 through the telescopic mechanism 4, a positioning mechanism 5 is arranged at the bottom end of the body mechanism 1 corresponding to the position of the adjusting mechanism 3, and the positioning mechanism 5 is propped against the adjusting mechanism 3.

Wherein the machine body mechanism 1 comprises a fixed rod 11, the top end of the fixed rod 11 is fixedly connected with a spherical protective cover 12, the upper surface of the fixed rod 11 positioned in the protective cover 12 is provided with a circular rotating groove 13, a circular rotating block 14 is rotationally connected in the rotating groove 13, the upper surface of the rotating block 14 is fixedly connected with a supporting rod 15, the upper end of the supporting rod 15 extends into the protective cover 12 in a penetrating way, the upper end of the supporting rod 15 is fixedly connected with a first rotating shaft 16, the upper end of the supporting rod 15 is rotationally connected with a fixed block 17 through the first rotating shaft 16, the side wall of the fixed block 17 close to the outer side is fixedly connected with a fixed plate 18, the side wall of the fixed plate 18 away from the fixed block 17 is fixedly connected with a camera 19, the outer side wall of the fixed plate 18 positioned at two sides of the camera 19 is fixedly connected with two illuminating lamps 110, the shielding protection mechanism 2 comprises a protection sleeve 21, the protection sleeve 21 is sleeved outside the protection cover 12, an elastic band 22 is fixedly sleeved at the opening of the upper end of the protection sleeve 21, a connecting rope 23 is fixedly connected to the outer side wall of the elastic band 22, a cleaning cloth 24 is fixedly connected to one end of the connecting rope 23 far away from the elastic band 22, the cleaning cloth 24 is adhered and fixed on the elastic band 22, two fixing ropes 25 are fixedly connected to the opening of the lower end of the protection sleeve 21, a first rotating rod 26 is fixedly connected to the lower ends of the two fixing ropes 25, the two first rotating rods 26 are respectively and rotatably connected to the outer side wall of the fixing rod 11 through bearings, a first rotating handle 27 is fixedly connected to the two first rotating rods 26 through holding the fixing rod 11, then the protection cover 12 and the fixing rod 11 are inserted into a wound, the protection cover 21 can protect the protection cover 12, thereby avoid protection casing 12 can be stained with impurity when getting into its surface, then when reaching predetermined position, rotate first dwang 26 through first twist grip 27, and can roll up fixed rope 25 when first dwang 26 rotates, and fixed rope 25 can pull lag 21, because of the opening of lag 21 is tied up through the rubber band, and lag 21 can make its opening open when being pulled, then can slide downwards and break away from protection casing 12 through the opening part that becomes flexible, and rubber band 22 can pull cleaning cloth 24 through connecting rope 23 when expanding for cleaning cloth 24 can clear up the top of protection casing 12 when being pulled and remove, thereby make protection casing 12 whole keep clean and convenient follow-up shooting.

Wherein the adjusting mechanism 3 comprises a fixing hole 31, the fixing hole 31 is penetrated and arranged on the upper surface of the fixing rod 11, a second rotating rod 32 is connected in a sliding way in the fixing hole 31, the upper end of the second rotating rod 32 is penetrated and extended into the protecting cover 12, one end of the second rotating rod 32 positioned in the protecting cover 12 is fixedly connected with a second rotating shaft 33, the second rotating shaft 33 is connected with the fixing block 17 through a telescopic mechanism 4, the lower end of the second rotating rod 32 is penetrated and extended out of the fixing rod 11 and is fixedly connected with a second rotating handle 34, a first anti-slip pattern 35 which is arranged in an annular way is fixedly connected on the rod wall of the second rotating rod 32, a conducting wire 36 is fixedly connected in the second rotating rod 32, one end of the conducting wire 36 is penetrated and extended into the protecting cover 12 and is connected with the camera 19 and two illuminating lamps 110, the other end of the conducting wire 36 is penetrated and extended out of the second rotating rod 32, the positioning mechanism 5 comprises two positioning holes 51, two positioning holes 51 are all penetrated and opened on the lower end of the fixing hole 31, one end of the two positioning holes 55 is penetrated and extended out of the annular grooves 52 are respectively, one end of the two positioning blocks 52 is sleeved and extended out of the annular grooves 52 is connected with one end of the two positioning blocks 52 which is extended out of the annular grooves 52, one end 52 is extended and is connected with one end of the two annular grooves 52 is extended out of the annular grooves 52, one end 52 is extended and is connected with one end 52 of the two annular grooves 52 is extended and the two annular grooves 52 is connected with one end 52, 55 is extended and one end 52 is extended out of the annular groove 52 is connected with one end 52 is opposite one end 52 is connected with one end 52, the two ends of the two springs 57 respectively abut against the groove walls of the two annular grooves 55 and the two annular blocks 56, the illuminating lamp 110 and the camera 19 are started, at this time, the illuminating lamp 110 illuminates the outside, then the camera 19 shoots, and when the direction and the angle need to be adjusted, the positioning rod 52 is pulled by the handle 54, the positioning rod 52 can drive the second anti-skid pattern 53 to move and release the engagement with the first anti-skid pattern 35, and release the fixation of the second rotating rod 32, then the second rotating rod 32 can be driven to rotate by the second rotating handle 34, the second rotating rod 32 can drive the fixed block 17 to rotate through the mounting rod 44 and the mounting block 43, the fixed block 17 drives the rotating block 14 to rotate in the rotating groove 13 through the supporting rod 15, and the fixed block 17 can only drive the fixed plate 18, the camera 19 and the illuminating lamp 110 to rotate annularly when the direction needs to be adjusted, afterwards the second rotating rod 32 can push and pull the second rotating rod 32 through the second rotating handle 34, then the second rotating rod 32 can drive the second rotating rod 32 to drive the second rotating rod 33 to move synchronously through the second rotating rod 33 and the lifting and the rotating rod 17 to move in the direction of the rotating rod 16 and the rotating rod 16 can be prevented from being damaged by the lifting and the rotating rod 16 to rotate in the multiple directions of the rotating rod 16, and the rotating rod 16 can be fixed by the fixed block 17 can be driven by the fixed block 17 to rotate in the rotating block 17 in the limiting position of the rotating block 14, and the rotating block is prevented from being damaged by the rotating block 14.

The telescopic mechanism 4 comprises a mounting cavity 41, the mounting cavity 41 is formed in the fixing block 17, a mounting hole 42 is formed in the cavity wall, close to one side of the second rotating rod 32, of the mounting cavity 41 in a penetrating mode, a mounting block 43 is connected in a sliding mode in the mounting cavity 41, a mounting rod 44 is fixedly connected to the mounting block 43 in a position corresponding to the mounting hole 42, one end, far away from the mounting block 43, of the mounting rod 44 penetrates through the mounting hole and extends out of the fixing block 17 and is fixedly connected to the second rotating shaft 33, in the lifting process of the second rotating rod 32, the distance between the second rotating rod 32 and the fixing block 17 can be changed, at the moment, the second rotating shaft 33 is connected with the fixing block 17 through the mounting rod 44 and the mounting block 43, the distance between the second rotating rod 32 and the fixing block 17 is changed, and the second rotating rod 32 and the fixing block 17 can be always connected through the mounting rod 44 and the mounting block 43 in the mounting hole 42, so that angle adjustment can be avoided.

Wherein, a plurality of ball holes 111 are formed in the rotating block 14 in a penetrating manner, a ball 112 is connected in the plurality of ball holes 111 in a rolling manner, the upper ends and the lower ends of the plurality of balls 112 extend out of the ball holes 111, the upper ends and the lower ends of the plurality of balls 112 are propped against the groove wall of the rotating groove 13, and the rotating block 14 can rotate in the rotating groove 13 through the rolling of the balls 112 during rotation, so that the influence on the use caused by overlarge friction force during the rotation of the rotating block 14 is avoided.

When the protective cover is used, the protective cover 12 and the fixing rod 11 are inserted into a wound by holding the fixing rod 11, meanwhile, the protective cover 21 can protect the protective cover 12, so that impurities are prevented from being stained on the surface of the protective cover 12 when the protective cover 12 enters the protective cover, then when the protective cover reaches a preset position, the first rotating rod 26 is rotated through the first rotating handle 27, the fixing rope 25 is wound when the first rotating rod 26 rotates, the protective cover 21 is pulled through the fixing rope 25, the opening of the protective cover 21 is fastened through the rubber band, the protective cover 21 can open when being pulled, then the protective cover 12 can be slid downwards and separated from the protective cover through the loose opening, and the rubber band 22 can pull the cleaning cloth 24 through the connecting rope 23 when being expanded, so that the cleaning cloth 24 can clean the top end of the protective cover 12 when being pulled, and the protective cover 12 is kept clean as a whole, and subsequent shooting is convenient; then, the illuminating lamp 110 and the camera 19 are started, at this time, the illuminating lamp 110 illuminates the outside, then the camera 19 shoots, and when the direction and angle are required to be adjusted, the positioning rod 52 is pulled by the handle 54, the positioning rod 52 drives the second anti-skid pattern 53 to move and release the engagement with the first anti-skid pattern 35, and releases the fixation of the second rotating rod 32, then the second rotating rod 32 can be driven to rotate by the second rotating handle 34, the second rotating rod 32 can drive the fixed block 17 to rotate by the mounting rod 44 and the mounting block 43, the fixed block 17 drives the rotating block 14 to rotate in the rotating groove 13 by the supporting rod 15, and under the limit of the rotating groove 13 and the rotating block 14, the fixed block 17 can only drive the fixed plate 18, the camera 19 and the illuminating lamp 110 to rotate annularly, so that the direction of the camera 19 is adjusted, then the second rotating rod 32 can be pushed and pulled by the second rotating handle 34, the second rotating rod 32 drives the second rotating shaft 33 to synchronously lift, the second rotating shaft 33 drives one end of the fixed block 17 to lift by the mounting rod 44, the fixed block 17 is supported by the supporting rod 15 and the first rotating shaft 16, the fixed plate 18, the camera 19 and the illuminating lamp 110 can be adjusted in direction by the lever principle, in the process of adjustment, focus is searched, after searching is completed, the handle 54 can be released, at this time, the spring 57 can push the annular block 56, the annular block 56 can drive the positioning rod 52 to synchronously move, the second anti-skid patterns 53 driven by the positioning rod 52 are meshed with the first anti-skid patterns 35, thereby fixing the second rotating rod 32, the camera 19 can be fixed when the second rotating rod 32 is fixed, the camera 19 can shoot the focus to facilitate diagnosis and treatment, and the fixing rod 11 and the protective cover 12 reduce the necessary movement and the movement range in the searching process, thereby avoiding secondary injury caused by the movement of the camera.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the foregoing examples, and that the foregoing description and description are merely illustrative of the principles of this invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The endoscope for neurosurgery comprises a body mechanism (1), and is characterized in that a shielding protection mechanism (2) is arranged on the body mechanism (1), an adjusting mechanism (3) is arranged in the body mechanism (1), the top end of the adjusting mechanism (3) is fixedly connected with a telescopic mechanism (4), the adjusting mechanism (3) is connected with the body mechanism (1) through the telescopic mechanism (4), a positioning mechanism (5) is arranged at the bottom end of the body mechanism (1) corresponding to the position of the adjusting mechanism (3), and the positioning mechanism (5) is propped against the adjusting mechanism (3);

the camera body mechanism (1) comprises a fixed rod (11) and a fixed block (17), a spherical protective cover (12) is fixedly connected to the top end of the fixed rod (11), a circular rotating groove (13) is formed in the upper surface of the fixed rod (11) in the protective cover (12), a circular rotating block (14) is rotationally connected to the rotating groove (13), a supporting rod (15) is fixedly connected to the upper surface of the rotating block (14), the upper end of the supporting rod (15) penetrates through and extends into the protective cover (12), a first rotating shaft (16) is fixedly connected to the upper end of the supporting rod (15), a fixed block (17) is rotationally connected to the upper end of the supporting rod (15) through the first rotating shaft (16), a fixed plate (18) is fixedly connected to the side wall, close to the outer side, of the fixed plate (18), a head (19) is fixedly connected to the side wall, far away from the fixed block (17), of the fixed plate, of the camera head (19), and two side walls (110) are fixedly connected to the two sides of the fixed plates (19).

The adjusting mechanism (3) comprises a fixing hole (31), the fixing hole (31) is penetrated and arranged on the upper surface of the fixing rod (11), a second rotating rod (32) is connected in a sliding manner in the fixing hole (31), the upper end of the second rotating rod (32) is penetrated and extended into the protective cover (12), one end of the second rotating rod (32) positioned in the protective cover (12) is fixedly connected with a second rotating shaft (33), the second rotating shaft (33) is connected with the fixing block (17) through a telescopic mechanism (4), the lower end of the second rotating rod (32) is penetrated and extended out of the fixing rod (11) and is fixedly connected with a second rotating handle (34), and a first anti-skid pattern (35) which is in an annular shape is fixedly connected to the rod wall of the second rotating rod (32);

the telescopic mechanism (4) comprises a mounting cavity (41), the mounting cavity (41) is formed in the fixing block (17), a mounting hole (42) is formed in the cavity wall, close to one side of the second rotating rod (32), of the mounting cavity (41) in a penetrating mode, a mounting block (43) is connected in the mounting cavity (41) in a sliding mode, a mounting rod (44) is fixedly connected to the position, corresponding to the mounting hole (42), of the mounting block (43), and one end, far away from the mounting block (43), of the mounting rod (44) penetrates through the mounting hole (42) and extends out of the fixing block (17) to be fixedly connected to the second rotating shaft (33);

the positioning mechanism (5) comprises two positioning holes (51), two positioning holes (51) are formed in the lower end hole wall of the fixing hole (31) in a penetrating mode, two positioning rods (52) are connected in a sliding mode in the positioning holes (51), one ends, opposite to each other, of the positioning rods (52) are formed in the fixing hole (31) in a penetrating mode and fixedly connected with a second anti-slip pattern (53), the second anti-slip pattern (53) is meshed with the first anti-slip pattern (35), one ends, far away from each other, of the positioning rods (52) are formed in a penetrating mode, extending out of the fixing rod (11) and fixedly connected with a handle (54), two annular grooves (55) are formed in the hole wall of the positioning holes (51), an annular block (56) is connected in a sliding mode in the two mode, the annular blocks (56) are fixedly sleeved on the rod walls of the two positioning rods (52) respectively, the two annular grooves (57) are formed in a position corresponding to the two annular blocks (55), and the two annular grooves (57) are formed in a position corresponding to the two annular grooves (55) and are formed in the two annular grooves (57).

2. An endoscope for neurosurgery according to claim 1, wherein: shielding protection machanism (2) include lag (21), lag (21) cup joints in the outside of protection casing (12), just the upper end opening part of lag (21) is fixed to be cup jointed a rubber band (22), fixedly connected with connecting rope (23) on the lateral wall of rubber band (22), one end fixedly connected with cleaning cloth (24) of rubber band (22) are kept away from to connecting rope (23), cleaning cloth (24) adhesion is fixed on rubber band (22), just the lower extreme opening part fixedly connected with two fixed ropes (25) of lag (21), two the equal fixedly connected with of lower extreme of fixed rope (25) is first dwang (26), two all through bearing swivelling joint on the lateral wall of fixed lever (11), and two equal fixedly connected with one first rotation handle (27) on first dwang (26).

3. An endoscope for neurosurgery according to claim 1, wherein a wire (36) is fixedly connected to the inside of the second rotating rod (32), one end of the wire (36) extends into the protective cover (12) in a penetrating manner and is connected with the camera (19) and the two illuminating lamps (110), and the other end of the wire (36) extends out of the second rotating rod (32) in a penetrating manner and extends outwards.

4. An endoscope for neurosurgery according to claim 1, wherein: a plurality of ball holes (111) are formed in the rotating block (14) in a penetrating mode, a plurality of balls (112) are connected in the ball holes (111) in a rolling mode, the upper ends and the lower ends of the balls (112) extend out of the ball holes (111), and the upper ends and the lower ends of the balls (112) are abutted to the groove walls of the rotating grooves (13).