CN117582161A - Endoscope with rotatable view angle - Google Patents

Abstract

The utility model relates to a rotatable endoscope of view angle, including the endoscope casing, the endoscope casing includes first casing and second casing, wear to be equipped with in the mirror in first casing and the second casing, be provided with view angle rotation component and objective optical system in the one end that the second casing was kept away from to first casing, be provided with angle adjusting device between pipe in first casing, second casing and the mirror, angle adjusting device includes the turning handle, locating component and fixed subassembly, the both ends of turning handle rotate with first casing and second casing respectively and are connected, the middle part of turning handle and the pipe fixed connection in the mirror, locating component sets up on the turning handle and with the tip butt of second casing, fixed subassembly sets up between turning handle and second casing and along the axis direction location turning handle of second casing. When this application rotates the turning handle, tube and view angle rotation component rotate in the drive mirror, and then drive the view angle of endoscope and adjust, reduce and change the endoscope and influence the possibility of operation.

Description

Endoscope with rotatable view angle

Technical Field

The present application relates to the field of medical instruments, and in particular to an endoscope with rotatable view angle.

Background

The endoscope is a detection instrument integrating traditional optics, ergonomics, precision machinery, modern electronics, mathematics, software and the like, and comprises an image sensor, an optical lens, a light source illumination device, a mechanical device and the like. It can be passed into stomach by oral cavity or passed into body by means of other natural pore channel, and the endoscope can be used for observing the lesions which can not be displayed by X-ray, so that it is very useful for doctor to detect etiology.

The clinically common 3D endoscope is divided into a 0 degree mirror, a 12 degree mirror, a 30 degree mirror, a 45 degree mirror, a 70 degree mirror and a 90 degree mirror according to view angles, and the 3D endoscope with different view angles is applicable to laparoscopic surgery at different positions. In some laparoscopic surgery, two or more kinds of endoscopes may be used, which requires preparing a plurality of endoscopes before surgery, frequently switching the endoscopes during surgery, and cleaning the plurality of endoscopes after surgery, so that the whole surgery process is complicated and the surgery time is long; when the endoscope with a single visual angle is manually rotated, the contact part between the outer wall of the endoscope and a patient is rubbed, so that friction scratch can be caused to the patient.

Disclosure of Invention

To reduce the possibility of prolonged operation time due to changing endoscopes of different viewing angles, the present application provides an endoscope with rotatable viewing angles.

The application provides a rotatable endoscope of visual angle adopts following technical scheme:

the utility model provides a rotatable endoscope of view angle, includes the endoscope casing, the endoscope casing includes first casing and second casing, wear to be equipped with in the mirror in first casing and the second casing and manage, be provided with view angle rotation component and objective optical system in the one end that the second casing was kept away from to first casing, be provided with angle adjusting device between first casing, second casing and the mirror in the pipe, angle adjusting device includes turning handle, locating component and fixed subassembly, the both ends of turning handle rotate with first casing and second casing respectively and are connected, the middle part of turning handle is managed fixed connection in with the mirror, locating component sets up on the turning handle and with the tip butt of second casing, fixed component sets up between turning handle and second casing and fix a position the turning handle along the axis direction of second casing.

Through adopting above-mentioned technical scheme, when the different view angles of endoscope need be changed, hold first casing or second casing, rotate the turning handle, make the turning handle rotate on first casing and second casing, thereby drive the intraductal rotation of mirror, drive the view angle rotation subassembly rotation of first casing tip, thereby adjust the angle of view angle, positioning module fixes a position in the view angle adjustment in-process, reduce the possibility that the endoscope rotated when not needing the change angle, through installing turning handle and positioning module between first casing and second casing, drive intraductal rotation in first casing and second casing, reduce the possibility that the operation efficiency was influenced when needing to change the view angle, the turning handle drives intraductal rotation of mirror, first casing that contacts with the human body does not rotate in the view angle rotation process, and then reduce first casing rotation and cause the possibility of friction injury to the patient.

Optionally, the locating component includes elastic component and butt ball, set up the standing groove that extends along the axis direction of second casing on the stem, the elastic component sets up in the standing groove, the butt ball sets up on the elastic component, the constant head tank has been seted up on the terminal surface of second casing towards first casing, the constant head tank has a plurality ofly along the circumference distribution of second casing, the butt is in the constant head tank when the butt ball is fixed a position.

Through adopting above-mentioned technical scheme, the elastic component promotes the butt ball in the standing groove, with the butt ball butt in the constant head tank, when the turning handle rotated, the butt ball moved in adjacent constant head tank, and the pipe rotated in the turning handle drive mirror of being convenient for, the butt ball was fixed a position under the butt of elastic component for the orientation angle of endoscope is rotated and is fixed a position after the certain angle, reduces the orientation angle and need not the possibility of adjustment when turning handle pivoted.

Optionally, the fixed subassembly is including rotating fixed cover, set up first fixed slot on the inner wall of turning handle, first fixed slot is located the one end that the standing groove was facing away from first casing, set up the second fixed slot on the outer wall of second casing, rotate fixed cover setting in first fixed slot and second fixed slot, rotate fixed cover and turning handle joint in the axis direction of second casing.

Through adopting above-mentioned technical scheme, when rotating fixed cover connection stem and second casing, rotate fixed cover and place in first fixed slot and second fixed slot, when rotating between pivot and the second casing, rotate fixed cover and cup joint the stem on the second casing at the axis direction of stem, reduce the possibility that the stem breaks away from the second casing.

Optionally, wear to be equipped with the mirror inner tube in the mirror in the pipe, fixed connection between mirror inner tube and mirror in pipe and the second casing through supporting component, supporting component includes supporting seat and back optic fibre cover, the supporting seat wears to locate in the second casing, back optic fibre cover wears to locate on the mirror inner tube, the one end of mirror inner tube sets up on the supporting seat, the other end sets up on back optic fibre cover, objective optical system sets up between mirror inner tube and view direction angle rotation subassembly.

Through adopting above-mentioned technical scheme, install the mirror inner tube on the mirror middle tube through supporting seat and back optic fibre cover, when the mirror middle tube is rotated in the rotation of the handle of being convenient for drive mirror, drive objective optical system and view angle rotation subassembly and rotate on first casing, and then the regulation of the view angle of endoscope of being convenient for reduces the view angle and adjusts the in-process first casing rotation and cause the possibility that the patient appears friction damage.

Optionally, the view angle rotating assembly comprises a front outer tube, a front optical fiber sleeve and an object edge integrated seat, the front outer tube is rotationally arranged on the first shell, the front optical fiber sleeve is arranged between the front outer tube and the rear optical fiber sleeve, the object edge integrated seat is arranged on the front optical fiber sleeve, and the objective optical system is arranged between the object edge integrated seat and the inner tube.

Through adopting above-mentioned technical scheme, when pipe rotates in the mirror, drive preceding optic fibre cover and rotate on first casing to take the integrative seat of animal arris to rotate on outer tube before the mirror, thereby change the visual angle of endoscope, when visual angle rotates, only outer tube rotates before the mirror, reduces first casing along with the possibility of turning handle pivoted.

Optionally, the objective optical system includes objective, prism and objective section of thick bamboo, the objective section of thick bamboo sets up in the mirror inner tube, the objective is provided with two, one the objective sets up on the integrative seat of thing arris, another the objective sets up on the objective section of thick bamboo, the one end of prism sets up on the integrative seat of thing arris, the other end is towards the objective section of thick bamboo, the central line of the terminal surface of the one end of prism towards the objective section of thick bamboo and the coincidence of the axis of pipe in the mirror set up.

Through adopting above-mentioned technical scheme, the prism is installed on the integrative seat of thing arris one end and is static relatively with the objective on the integrative seat of thing arris, and the integrative seat of thing arris is towards the one end of thing lens cone and objective on the thing lens cone is coaxial throughout the rotation in-process, reduces the rotation in-process because prism and objective are not aligned, and influence the visual scope of endoscope, and then influence the possibility of going on of operation.

Optionally, be provided with the protection piece that is used for protecting objective on the integrative seat of thing arris, the protection piece is located the outer tube before the mirror and keeps away from on the one end of first casing.

By adopting the technical scheme, the protection sheet reduces the possibility that the lens is separated from the object edge integrated seat, reduces the possibility that the objective is not clear due to contact with liquid, and reduces the possibility that the objective is deviated from the object edge integrated seat.

Optionally, the front optical fiber sleeve comprises a first optical fiber sleeve, a second optical fiber sleeve and a connecting block, the first optical fiber sleeve is sleeved on the second optical fiber sleeve, the first optical fiber sleeve is arranged on the inner wall of the outer tube before the lens, the second optical fiber sleeve is arranged on the object edge integrated seat, and the connecting block is arranged between the first optical fiber sleeve and the second optical fiber sleeve.

Through adopting above-mentioned technical scheme, when using the endoscope, liquid flows in the clearance between first optic fibre cover and the second optic fibre cover, and when liquid flowed to first casing and mirror center tube department, flowed to between mirror center tube and the mirror inner tube in the back optic fibre cover, under the circumstances that does not influence liquid flow, first optic fibre cover and second optic fibre cover reduce the liquid and get into the possibility of objective department in the integrative seat of thing arris, back optic fibre cover reduces the liquid and gets into the possibility in the mirror inner tube.

Optionally, a lens assembly is disposed in the inner tube, the lens assembly includes two convex mirrors and a concave mirror, the two convex mirrors are disposed on one side of the object lens barrel facing the second housing, the two convex mirrors are in contact with the tube wall of the inner tube, and the concave mirror is disposed between the two convex mirrors.

Through adopting above-mentioned technical scheme, convex mirror and concave mirror are in one side of objective section of thick bamboo towards the second casing, and when the endoscope used, convex mirror and concave mirror made the light in the mirror inner tube comparatively concentrate, reduce the comparatively scattered possibility of sight in the endoscope.

Optionally, the anti-slip groove convenient to rotate the rotating handle is formed in the rotating handle, and a plurality of anti-slip grooves are distributed along the axial direction of the rotating handle.

Through adopting above-mentioned technical scheme, when rotating the turning handle, the staff contacts with the anti-skidding groove on the turning handle, reduces the rotation degree of difficulty when rotating the turning handle, and then is convenient for improve the convenience of turning handle, reduces the time that the workman needs the expense when rotating.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the rotary handle, the positioning component and the fixing component are arranged among the first shell, the second shell and the endoscope middle tube, the rotary handle is rotationally connected with the first shell and the second shell and fixedly connected with the endoscope middle tube, when the endoscope viewing angle is required to be adjusted, the rotary handle is rotated, the endoscope middle tube is driven to rotate between the first shell and the second shell, so that the viewing angle rotating component is driven to rotate, the viewing angle of the endoscope is further adjusted, and in the process of adjusting the viewing angle, the positioning component positions the adjusted viewing angle, so that the possibility of rotation of the endoscope is reduced when the endoscope is not required to be adjusted;

2. when the positioning assembly is positioned, the elastic piece abuts against the abutting balls in the positioning grooves, and when the rotating handle is rotated, the abutting balls move between the adjacent positioning grooves, the elastic piece stretches or shortens in the moving process of the abutting balls, so that the abutting balls can move conveniently, and the possibility of rotating the rotating handle between the first shell and the second shell is reduced due to the abutting of the abutting balls;

3. in the view angle adjusting process, the outer tube rotates along with the middle tube of the mirror, and the first shell does not rotate, so that on one hand, only the outer tube rotates before the mirror, the influence on the view angle range during adjustment is reduced, on the other hand, the first shell does not rotate, and the possibility that friction damage occurs to a patient due to rotation of the first shell is reduced.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present application.

Fig. 2 is an overall cross-sectional view of an embodiment of the present application.

Fig. 3 is an installation schematic view of the angle adjusting device in the embodiment of the present application.

Fig. 4 is an enlarged view at a in fig. 3, showing an installation schematic of the positioning assembly.

Fig. 5 is a schematic view illustrating the installation of the angular rotation assembly to the objective optical system according to the embodiment of the present application.

FIG. 6 is a schematic view of the installation of a front fiber optic boot in an embodiment of the present application.

Reference numerals illustrate: 1. an endoscope housing; 11. a first housing; 12. a second housing; 121. a positioning groove; 122. a second fixing groove; 13. a tube in the mirror; 14. a scope inner tube; 3. an angle adjusting device; 31. a rotating handle; 311. an anti-skid groove; 312. a placement groove; 313. a first fixing groove; 32. a positioning assembly; 321. an elastic member; 322. abutting the ball; 33. a fixing assembly; 4. a view angle rotation assembly; 41. an external tube in front of the mirror; 42. a front optical fiber sleeve; 421. a first optical fiber jacket; 422. a second optical fiber jacket; 423. a connecting block; 424. a gap; 43. an object edge integrated seat; 431. a protective sheet; 5. an objective optical system; 51. an object lens barrel; 52. a prism; 53. an objective lens; 6. a lens assembly; 61. a convex mirror; 62. concave mirror; 71. a rear optical fiber jacket; 72. and a supporting seat.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-6.

The embodiment of the application discloses an endoscope with rotatable view angle. Referring to fig. 1 and 2, the endoscope comprises an endoscope housing 1, the endoscope housing 1 comprises a first housing 11 and a second housing 12, a middle lens tube 13 is arranged between the first housing 11 and the second housing 12 in a penetrating way, an angle adjusting device 3 is arranged among the first housing 11, the second housing 12 and the middle lens tube 13, and a viewing angle rotating component 4 and an objective optical system 5 are arranged at one end, far away from the second housing 12, of the first housing 11.

The mirror inner tube 14 is arranged in the mirror inner tube 13 in a penetrating manner, two ends of the mirror inner tube 14 are fixedly arranged in the mirror inner tube 13 through supporting components, the supporting components comprise supporting seats 72 and rear optical fiber sleeves 71, the supporting seats 72 are arranged in the second shell 12, the end parts of the mirror inner tube 14 are arranged on the supporting seats 72 in a penetrating manner, the rear optical fiber sleeves 71 are fixedly sleeved on one ends of the mirror inner tube 13 far away from the second shell 12, the mirror inner tube 14 is arranged on the inner wall of the rear optical fiber sleeves 71 in a penetrating manner, the mirror inner tube 14 is fixed through the supporting seats 72 and the rear optical fiber sleeves 71, and the mirror inner tube 13 is convenient to drive the mirror inner tube 14 to rotate in the viewing angle adjusting process.

Referring to fig. 2 and 3, the angle adjusting device 3 includes a rotating handle 31, a positioning assembly 32 and a fixing assembly 33, two ends of the rotating handle 31 are respectively connected with the first shell 11 and the second shell 12 in a rotating way, the middle part of the rotating handle 31 is fixedly installed with the middle tube 13 of the mirror, a plurality of anti-slip grooves 311 are formed in the rotating handle 31, the anti-slip grooves 311 are distributed along the circumferential direction of the rotating handle 31, and when the rotating handle 31 is rotated, friction between a human hand and the rotating handle 31 is increased by the anti-slip grooves 311, and the rotating difficulty of the rotating handle 31 is reduced.

Referring to fig. 3 and 4, the positioning assembly 32 includes an elastic member 321 and a contact ball 322, the rotating handle 31 is provided with a plurality of positioning grooves 312, the positioning grooves 312 are distributed along the axial direction of the rotating handle 31, the end surface of the second housing 12 facing the first housing 11 is provided with a positioning groove 121, the elastic member 321 includes positioning springs, the positioning springs are mounted on the rotating handle 31 and located in the positioning grooves 312, a positioning spring is mounted in each positioning groove 312, the contact ball 322 is mounted between the second housing 12 and the positioning springs, the contact ball 322 is in contact with the positioning groove 121, when the rotating handle 31 rotates, the rotating handle 31 rotates relative to the first housing 11 and the second housing 12, the rotating handle 31 drives the middle tube 13 to rotate between the first housing 11 and the second housing 12, the contact ball 322 moves between the adjacent positioning grooves 121 along with the rotation of the rotating handle 31, and the rotating handle 31 and the second housing 12 are positioned through the positioning springs and the contact ball 322, and the possibility that the middle tube 13 rotates when the rotating handle 31 is not needed is reduced.

Referring to fig. 4, a first fixing groove 313 is formed in an inner wall of one end of the rotating handle 31 facing the second housing 12, the first fixing groove 313 is located on a side of the placing groove 312 opposite to the first housing 11, a second fixing groove 122 is formed in an outer wall of the second housing 12, the fixing assembly 33 comprises a rotating fixing sleeve, the rotating fixing sleeve is installed in the first fixing groove 313 and the second fixing groove 122, the rotating fixing sleeve is clamped with the rotating handle 31 in an axial direction of the rotating handle 31, and the possibility that the rotating handle 31 is separated from the second housing 12 is reduced.

Referring to fig. 5, the view angle rotating assembly 4 includes a front outer tube 41, a front optical fiber sleeve 42 and an object edge integrated seat 43, the front outer tube 41 is rotatably mounted on one end of the first housing 11 far away from the second housing 12, the front outer tube 41 is rotatably connected with an end of the first housing 11, and when the rotating handle 31 rotates, the middle tube 13 and the front outer tube 41 are driven to rotate, so that the influence on the view range in the rotating process is reduced.

Referring to fig. 5 and 6, the front optical fiber sleeve 42 includes a first optical fiber sleeve 421, a second optical fiber sleeve 422, and a connection block 423, the first optical fiber sleeve 421 is fixedly installed on the inner wall of the front mirror outer tube 41, the second optical fiber sleeve 422 is installed in the first optical fiber sleeve 421 in a penetrating manner, one side of the connection block 423 is installed on the inner wall of the first optical fiber sleeve 421, the other side is installed on the outer wall of the second optical fiber sleeve 422, a gap 424 for liquid to flow is reserved between the first optical fiber sleeve 421 and the second optical fiber sleeve 422, the end of the first optical fiber sleeve 421, which faces the first housing 11, of the second optical fiber sleeve 422 is fixedly connected with the rear optical fiber sleeve 71, and a flow groove which is communicated with the gap 424 between the first optical fiber sleeve 421 and the second optical fiber sleeve 422 is reserved on the rear optical fiber sleeve 71, so that liquid can flow between the middle mirror inner tube 13 and the mirror inner tube 14.

The object edge integrated seat 43 is mounted on the inner wall of the second optical fiber sleeve 422, and the object edge integrated seat 43 is used for mounting the objective optical system 5.

Referring to fig. 5, the objective optical system 5 includes an objective lens 53, a prism 52 and an objective lens barrel 51, the objective lens barrel 51 is mounted on an inner wall of a rear optical fiber sleeve 71, the objective lens 53 is mounted with two pieces, one objective lens 53 is mounted on an objective lens integrated seat 43, the other objective lens 53 is mounted on the objective lens barrel 51, one end of the prism 52 is mounted on the objective lens integrated seat 43, the other end extends toward the objective lens barrel 51, the prism 52 is positioned between the two objective lenses 53, a center line of an end surface of the prism 52 facing one end of the objective lens barrel 51 is mounted coincident with an axis of the objective lens 53 on the objective lens barrel 51, so that the objective lens 53 and the prism 52 are aligned, and the use of the endoscope due to rotation is reduced.

The object edge integrated seat 43 is provided with the protection sheet 431, the protection sheet 431 is positioned at one end of the object edge integrated seat 43 far away from the first shell 11, the objective lens 53 on the object edge integrated seat 43 is abutted against the protection sheet 431, and the protection sheet 431 reduces the possibility of damaging or adhering impurities to the objective lens 53.

The lens assembly 6 is installed in the inner lens tube 14, the lens assembly 6 comprises two convex lenses 61 and a concave lens 62, the two convex lenses 61 are installed in the inner lens tube 14 and are positioned on one side of the object lens barrel 51 facing the second shell 12, the concave lens 62 is positioned between the two convex lenses 61, the concave lens 62 and the outer walls of the two convex lenses 61 are fixedly installed in contact with the inner wall of the inner lens tube 14, and the rotation of the inner lens tube 13 is reduced to affect the use of the endoscope.

The implementation principle of the endoscope with rotatable view angle in the embodiment of the application is as follows:

the rotating handle 31 is arranged among the first shell 11, the second shell 12 and the middle mirror tube 13, and the rotating handle 31 is fixed with the middle mirror tube 13 and rotates with the first shell 11 and the second shell 12, so that the view angle rotating assembly 4 and the objective optical system 5 at the end parts of the middle mirror tube 13 and the first shell 11 are driven to rotate, the view angle of an endoscope is changed, the possibility that the endoscope is repeatedly replaced to influence the operation is reduced, and the damage to a patient caused by directly rotating the endoscope on the patient is reduced.

When the rotating handle 31 rotates, the abutting ball 322 is abutted in the positioning groove 121 through the positioning spring, so that the rotated endoscope is positioned, and the possibility of rotation when the endoscope does not need to rotate is reduced.

The rotation fixing sleeve is used for clamping the rotating handle 31 on the second shell 12 in the axial direction of the rotating handle 31, so that the possibility of detachment between the rotating handle 31 and the second shell 12 is reduced.

The flow grooves on the rear fiber optic housing 71, the gap 424 between the first fiber optic housing 421 and the second fiber optic housing 422 facilitate the flow of liquid between the in-lens tube 13 and the in-lens tube 13.

The foregoing is a preferred embodiment of the present application, and is not intended to limit the scope of the present application in this way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (10)

1. An endoscope with rotatable view angle, characterized in that: including endoscope casing (1), endoscope casing (1) includes first casing (11) and second casing (12), wear to be equipped with in the mirror in pipe (13) in first casing (11) and second casing (12), be provided with view angle rotation component (4) and objective optical system (5) on the one end that second casing (12) was kept away from to first casing (11), second casing (12) and mirror in pipe (13), be provided with angle adjusting device (3) between first casing (11), second casing (12) and mirror in pipe (13), angle adjusting device (3) include turning handle (31), locating component (32) and fixed subassembly (33), the both ends of turning handle (31) are connected with first casing (11) and second casing (12) rotation respectively, the middle part and the mirror in pipe (13) fixed connection of turning handle (31), locating component (32) set up on turning handle (31) and with the tip butt of second casing (12), fixed subassembly (33) set up along between turning handle (31) and second casing (12) axis (31).

2. An endoscope with rotatable viewing angle according to claim 1, wherein: positioning assembly (32) are including elastic component (321) and butt ball (322), set up standing groove (312) that extend along the axis direction of second casing (12) on stem (31), elastic component (321) set up in standing groove (312), butt ball (322) set up on elastic component (321), constant head tank (121) have been seted up on the terminal surface of second casing (12) orientation first casing (11), constant head tank (121) have a plurality ofly along the circumference distribution of second casing (12), butt in constant head tank (121) when butt ball (322) are fixed a position.

3. An endoscope with rotatable viewing angle according to claim 2, wherein: the fixed subassembly (33) is including rotating fixed cover, first fixed slot (313) has been seted up on the inner wall of turning handle (31), first fixed slot (313) are located the one end of standing groove (312) back towards first casing (11), second fixed slot (122) have been seted up on the outer wall of second casing (12), rotate fixed cover setting in first fixed slot (313) and second fixed slot (122), rotate fixed cover and turning handle (31) joint in the axis direction of second casing (12).

4. An endoscope with rotatable viewing angle according to claim 1, wherein: the mirror inner tube (14) is arranged in the mirror inner tube (13) in a penetrating mode, the mirror inner tube (14) is fixedly connected with the mirror inner tube (13) and the second shell (12) through a supporting component, the supporting component comprises a supporting seat (72) and a rear optical fiber sleeve (71), the supporting seat (72) is arranged in the second shell (12) in a penetrating mode, the rear optical fiber sleeve (71) is arranged on the mirror inner tube (13) in a penetrating mode, one end of the mirror inner tube (14) is arranged on the supporting seat (72), the other end of the mirror inner tube is arranged on the rear optical fiber sleeve (71), and the objective optical system (5) is arranged between the mirror inner tube (14) and the view angle rotating component (4).

5. An endoscope with rotatable viewing angle according to claim 4 and wherein: the view angle rotating assembly (4) comprises a front outer tube (41), a front optical fiber sleeve (42) and an object edge integrated seat (43), the front outer tube (41) is rotationally arranged on the first shell (11), the front optical fiber sleeve (42) is arranged between the front outer tube (41) and the rear optical fiber sleeve (71), the object edge integrated seat (43) is arranged on the front optical fiber sleeve (42), and the objective optical system (5) is arranged between the object edge integrated seat (43) and the inner tube (14).

6. An endoscope with rotatable viewing angle according to claim 5 and wherein: the objective optical system (5) comprises an objective (53), a prism (52) and an objective tube (51), wherein the objective tube (51) is arranged in an inner tube (14), two objective lenses (53) are arranged, one objective lens (53) is arranged on an integral seat (43) of the object prism, the other objective lens (53) is arranged on the objective tube (51), one end of the prism (52) is arranged on the integral seat (43) of the object prism, the other end of the prism faces the objective tube (51), and the central line of the end face of the prism (52) facing one end of the objective tube (51) is overlapped with the axis of the middle tube (13).

7. An endoscope with rotatable viewing angle according to claim 6 and wherein: the object edge integrated seat (43) is provided with a protection sheet (431) for protecting the objective lens (53), and the protection sheet (431) is positioned at one end of the outer tube (41) far away from the first shell (11) before the lens.

8. An endoscope with rotatable viewing angle according to claim 5 and wherein: the front optical fiber sleeve (42) comprises a first optical fiber sleeve (421), a second optical fiber sleeve (422) and a connecting block (423), wherein the first optical fiber sleeve (421) is sleeved on the second optical fiber sleeve (422), the first optical fiber sleeve (421) is arranged on the inner wall of the outer tube (41) before the lens, the second optical fiber sleeve (422) is arranged on the object edge integrated seat (43), and the connecting block (423) is arranged between the first optical fiber sleeve (421) and the second optical fiber sleeve (422).

9. An endoscope with rotatable viewing angle according to claim 6 and wherein: the lens assembly (6) is arranged in the inner lens tube (14), the lens assembly (6) comprises two convex lenses (61) and a concave lens (62), the two convex lenses (61) are arranged on one side of the object lens barrel (51) facing the second shell (12), the two convex lenses (61) are in contact with the tube wall of the inner lens tube (14), and the concave lens (62) is located between the two convex lenses (61).

10. An endoscope with rotatable viewing angle according to claim 1, wherein: the anti-slip grooves (311) which are convenient for rotating the rotating handle (31) are formed in the rotating handle (31), and a plurality of anti-slip grooves (311) are distributed along the axial direction of the rotating handle (31).