CN111407213B - Endoscope - Google Patents

Abstract

The endoscope provided by the invention comprises a bracket, a fluid control mechanism, an actuating mechanism and a connecting mechanism, wherein the actuating mechanism, the connecting mechanism and the fluid control mechanism are assembled on the bracket, and the fluid control mechanism comprises a main body, a first runner piece, a second runner piece, a first control piece and a second control piece; the action mechanism comprises a first rotation component, a second rotation component and a first connecting piece; the connecting mechanism comprises a connecting assembly and a second connecting piece, and the connecting assembly comprises a first piece and a second piece which are connected with each other in a threaded mode. According to the technical scheme, the liquid channel and the gas channel are both arranged on the fluid control mechanism, a user can adjust the other bending direction of the insertion part under the condition that one direction of the upper direction, the lower direction or the left direction and the right direction of the insertion part is fixed, the user can conveniently use the endoscope, the first part and the second part are in threaded connection with each other, the first part and the second part can have larger applicable tolerance range during assembly, the precision requirement of parts is reduced, and the production cost is reduced.

Description

Endoscope

Technical Field

The invention belongs to the technical field of medical equipment, and particularly relates to an endoscope.

Background

Currently, in an endoscope, a liquid channel and a gas channel are often required to be provided. In the prior art, the liquid channel and the gas channel are arranged on different parts, so that the endoscope has a complex structure and is inconvenient to use.

In endoscopes, the elongated insertion portion is of a stiff type and a flexible type. In general, in an endoscope in which an insertion portion is flexible, a bending portion configured by connecting a plurality of bending pieces is provided on a distal end side of the insertion portion.

In general, the bent portion has the following structure: the bending portion is caused to perform bending operation by pulling and slackening the bending wire by operating a bending operation device provided to the operation portion. The front end of the bending wire is fixed to a predetermined position of a front end bending piece constituting the bending portion.

According to the endoscope provided with the bending portion, by bending the bending portion, the observation optical system provided at the distal end portion of the insertion portion can be observed in the target direction, and can be smoothly inserted into the deep portion.

The bending direction of the insertion part is divided into an up-down direction and a left-right direction, and the conventional endoscope controls the up-down direction and the left-right direction of the insertion part to bend through an action mechanism so as to achieve the observation purpose. However, currently, the endoscope actuating mechanism is susceptible to adjusting one of the two directions, so that the endoscope is inconvenient to use.

In addition, the bending portion is connected to the rotating member through a connection structure. However, the existing connection structure is complex, so that the assembly process is complex and the cost is high.

Disclosure of Invention

The invention mainly aims to provide an endoscope which is convenient to use and reduces production cost.

In order to achieve the main purpose, the endoscope provided by the invention comprises a bracket, a fluid control mechanism, an actuating mechanism and a connecting mechanism, wherein the actuating mechanism, the connecting mechanism and the fluid control mechanism are assembled on the bracket, the fluid control mechanism comprises a main body, a first runner piece, a second runner piece, a first control piece and a second control piece, the first runner piece and the second runner piece are movably inserted into the main body, the first control piece is sleeved at one end of the first runner piece, the second control piece is sleeved at one end of the second runner piece, the inner cavity of the first control piece and the inner cavity of the first runner piece are coaxially arranged, and the first control piece is a hollow piece; a first cylindrical cavity is arranged in the first part of the main body, and is communicated with a first runner part, a second runner part, a third runner part and a fourth runner part of the first part, and the first runner part, the second runner part, the third runner part and the fourth runner part are all hollow; the second part of the main body is provided with a second cylindrical cavity, the second cylindrical cavity is communicated with a fifth runner part and a sixth runner part of the second part, and the fifth runner part and the sixth runner part are hollow; the first flow passage piece is hollow, the first flow passage piece is provided with a first channel, a second channel and a circulating part, the first channel and the second channel penetrate through the first flow passage piece along the radial direction of the first cylindrical cavity, the first channel and the second channel are arranged along the rotation axis of the first cylindrical cavity, the two ends of the circulating part are respectively provided with a baffle, the diameter of each baffle is larger than the diameter of the outer wall of the circulating part, and a protruding part is arranged between the first channel and the circulating part; the second flow passage piece is provided with a flow guiding part and an isolating part, the first cavity and the second cavity of the flow guiding part are both cylinders, the rotation axis of the first cavity is intersected with the rotation axis of the second cavity, the second control piece is sleeved at one end of the isolating part, the flow guiding part is provided with a sealing part, and the sealing part is positioned on the outer wall of the first cavity; the action mechanism comprises a first rotation component, a second rotation component and a first connecting piece, wherein the first connecting piece penetrates through the first rotation component, and the first end of the first connecting piece is inserted into the second rotation component; the first rotary assembly comprises a first knob, a first positioning piece and a first control piece, a first round platform cavity is formed in the first knob, the first knob and the first control piece are both rotatably connected to the first positioning piece, a first part of the first positioning piece is located in the first knob, a second part of the first positioning piece penetrates through the first control piece, a plurality of first positioning pieces of the first knob are uniformly distributed along the circumferential direction of the first round platform cavity, a plurality of first positioning parts of the first positioning piece are uniformly distributed along the circumferential direction of the first round platform cavity, a plurality of first control parts of the first control piece are uniformly distributed along the circumferential direction of the first round platform cavity, each first positioning piece extends from a first bottom surface of the first knob to the first positioning piece along the rotation axis of the first round platform cavity, each first positioning part can swing relative to the first part along the rotation axis of the first round platform cavity, and the first positioning parts and the first control parts are relatively distributed along the rotation axis of the first round platform cavity; the second rotary assembly comprises a second knob, a second positioning piece and a control assembly, a second round platform cavity is formed in the second knob, the second knob and the second positioning piece are both rotatably connected to the control assembly, the second positioning piece is located in the second knob, one part of the control assembly is exposed out of the second knob, the other part of the control assembly is located in the second knob, a plurality of second positioning pieces of the second knob are uniformly distributed along the circumferential direction of the second round platform cavity, a plurality of second positioning parts of the second positioning piece are uniformly distributed along the circumferential direction of the second round platform cavity, a plurality of second control parts of the control assembly are uniformly distributed along the circumferential direction of the second round platform cavity, each second positioning piece extends from the second bottom surface of the second knob to the second positioning piece along the rotation axis of the second round platform cavity, each second positioning part can swing relative to the plate part of the second positioning part along the rotation axis of the second round platform cavity, and the second positioning parts and the second control parts are relatively distributed along the rotation axis of the second round platform cavity; the connecting mechanism comprises a connecting component and a second connecting piece, the connecting component comprises a first piece and a second piece which are connected with each other in a threaded manner, the second connecting piece is movably inserted into the first piece and the second piece, and a part of the second connecting piece is wound on a rotating piece of the endoscope; the first piece comprises a first abutting part and a first connecting part which are mutually connected, the first abutting part is a square cylinder, the first connecting part is a cylinder, the first abutting part and the first connecting part are hollow cylinders, the inner cavity of the first abutting part is communicated with the inner cavity of the first connecting part, and threads are arranged on the inner wall of the first connecting part; the second piece includes interconnect's second butt portion and second connecting portion, and second butt portion is the square cylinder, and second connecting portion is the cylinder, and second butt portion and second connecting portion are the cavity cylinder, and the inner chamber intercommunication second connecting portion of second butt portion, the outer wall of second connecting portion is provided with the screw thread.

According to the scheme, the gas sequentially passes through the first flow passage part and the first passage to enter the first flow passage piece and flow out of the first control piece along the inner cavity of the first flow passage piece; when the inner cavities of the first control piece and the first flow channel piece are closed from the outside, gas enters the first flow channel piece through the first flow channel part and the first channel and flows into the second channel along the inner cavity of the first flow channel piece, and then flows out of the first control piece from the second channel and enters the first cylindrical cavity, and then flows out of the third flow channel part; when the first control piece is pressed, the first control piece drives the first runner piece to move downwards, the protruding part seals the first runner part, and liquid flows from the second runner part to the circulation part and then flows out from the fourth runner part; when the waste liquid is required to be discharged, the second control piece is pressed, the closing part does not close the fifth runner part any more, the first cavity of the flow guiding part is communicated with the second cavity, the fifth runner part and the sixth runner part, and the waste liquid flows out through the sixth runner part, the first cavity, the second cavity and the fifth runner part in sequence, so that the waste liquid is discharged smoothly. Therefore, the liquid channel and the gas channel are both arranged on a fluid control mechanism, so that the endoscope is convenient for a user to use;

the first knob assembly can be used for controlling the vertical bending direction of the insertion part, the second knob assembly can be used for controlling the left-right bending direction of the insertion part, the first control part pushes the first positioning part to swing towards the first positioning piece, the first positioning part is abutted against the first positioning piece, the first knob cannot rotate under the action of the first positioning part, the second control part pushes the second positioning part to swing towards the second positioning piece, the second positioning part is abutted against the second positioning piece, and the second knob cannot rotate under the action of the second positioning part, so that a user can adjust the other bending direction of the insertion part under the condition that one direction of the vertical direction or the left-right direction of the insertion part is fixed, and the endoscope is convenient for the user to use;

the second connecting piece is partly coiled in the rotating piece, and the second connecting piece is movably inserted in the first piece and the second piece, so that the first piece and the second piece are in threaded connection with each other, the assembly has a larger applicable tolerance range, the precision requirement of parts is reduced, the assembly process is simplified, the assembly error caused by more assembly processes is avoided, and meanwhile, the production cost is reduced.

Drawings

The invention will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the invention, and other drawings can be obtained by those skilled in the art without inventive effort from the following figures.

FIG. 1 is a block diagram of an embodiment of an endoscope in accordance with the present invention.

Fig. 2 is a partially exploded view of an embodiment of a fluid control mechanism according to the present invention.

Fig. 3 is a block diagram of the body of one embodiment of a fluid control mechanism according to the present invention.

Fig. 4 is a cross-sectional view of a first flow path member of an embodiment of a fluid control mechanism according to the present invention.

Fig. 5 is a cross-sectional view of a second flow path member of an embodiment of a fluid control mechanism according to the present invention.

Fig. 6 is a block diagram of an embodiment of a fluid control mechanism according to the present invention.

Fig. 7 is a sectional view A-A shown in fig. 6.

Fig. 8 is a view of the structure of fig. 7 in another state.

Fig. 9 is a view of the structure of fig. 7 in another state.

Fig. 10 is a B-B sectional view shown in fig. 6.

Fig. 11 is a view of the structure of fig. 10 in another state.

Fig. 12 is an exploded view of the mechanism of the endoscope embodiment of the present invention.

Fig. 13 is an exploded view of a first rotary assembly of an embodiment of an actuation mechanism according to the present invention.

Fig. 14 is a structural cross-sectional view of a second rotary member of an embodiment of an actuating mechanism according to the present invention.

Fig. 15 is a block diagram of the attachment mechanism of one embodiment of the endoscope of the present invention.

Fig. 16 is a partial structural cross-sectional view of an embodiment of a connecting mechanism according to the present invention.

Fig. 17 is a partial structural cross-sectional view of an embodiment of a connecting mechanism according to the present invention.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Referring to fig. 1 to 17, the endoscope 100 provided in this embodiment includes a support 31, a fluid control mechanism 200, an actuating mechanism 300 and a connecting mechanism 500, wherein the actuating mechanism 300, the connecting mechanism 500 and the fluid control mechanism 200 are all assembled on the support 31, the fluid control mechanism 200 includes a first runner member 1, a second runner member 2, a main body 3, a first control member 4 and a second control member 5, the first runner member 1 and the second runner member 2 are both movably inserted into the main body 3, the first control member 4 is sleeved at one end of the first runner member 1, the second control member 5 is sleeved at one end of the second runner member 2, an inner cavity of the first control member 4 and an inner cavity of the first runner member 1 are coaxially arranged, the first control member 4 is a hollow member, the first runner member 1, the second runner member 2, the main body 3, the first control member 4 and the second control member 5 are all integrally formed members, the first control member 4 and the second control member 5 are both truncated cones, and the main body 3 is clamped on the support 31 of the endoscope 100.

Referring to fig. 1 to 3, a first cylindrical cavity 6 is provided in the first portion 7 of the main body 3, the first cylindrical cavity 6 communicates with a first runner portion 8, a second runner portion 9, a third runner portion 10 and a fourth runner portion 11 of the first portion 7, and the first runner portion 8, the second runner portion 9, the third runner portion 10 and the fourth runner portion 11 are all hollow. The second portion 12 of the body 3 is provided with a second cylindrical cavity 13, the second cylindrical cavity 13 communicating a fifth flow path portion 15 and a sixth flow path portion 16 of the second portion 12, the fifth flow path portion 15 and the sixth flow path portion 16 being hollow.

Referring to fig. 2 and 4, the first runner 1 is hollow, the first runner 1 is provided with a first channel 17, a second channel 18 and a circulation portion 19, the first channel 17 and the second channel 18 penetrate through the first runner 1 along the radial direction of the first cylindrical cavity 6, the first channel 17 and the second channel 18 are arranged along the rotation axis of the first cylindrical cavity 6, two ends of the circulation portion 19 are both provided with a partition 20, the diameter of the partition 20 is larger than the diameter of the outer wall of the circulation portion 19, a protruding portion 21 is arranged between the first channel 17 and the circulation portion 19, and the first runner 1 is an integral molding piece.

Referring to fig. 2 and 5, the second runner 2 is provided with a guiding portion 22 and an isolating portion 23, a first cavity 24 and a second cavity 25 of the guiding portion 22 are both cylinders, a rotation axis of the first cavity 24 intersects with a rotation axis of the second cavity 25, the second control member 5 is sleeved at one end of the isolating portion 23, and the second runner 2 is an integral forming member. The diversion portion 22 is provided with a closing portion 30, and the closing portion 30 is located on the outer wall of the first cavity 24.

Referring to fig. 2, the fluid control mechanism 200 includes an elastic member 26 and a supporting member 27, the supporting member is sleeved on the main body 3, and a first end of the elastic member 26 abuts against the supporting member 27. The number of elastic members 26 is two. The first control element 4 and the second control element 5 are respectively abutted with the second ends of the elastic elements 26. The first runner 1 and the second runner 2 both pass through an elastic member 26, and the elastic member 26 is a spring.

Referring to fig. 1, the fluid control mechanism 200 further includes a splitter 28, a first flow guide pipe and a second flow guide pipe, where the first flow guide pipe connects the splitter 28 with the first flow channel portion 8, the second flow guide pipe connects the splitter 28 with the second flow channel portion 9, and the first pipe portion 29 of the splitter 28 is inserted into the second portion 12.

Referring to fig. 1 to 7, the fluid control mechanism 200 is in a first state in which gas enters from the flow divider 28 and passes through the first flow conduit, the first gate 8, the first channel 17 in that order into the first flow divider 1 and out of the first control member 4 along its inner chamber, the flow direction of the gas being indicated by arrow a.

Referring to fig. 1 to 6 and 8, when the fluid control mechanism 200 is in the second state and the outer side seals the inner cavities of the first control member 4 and the first runner member 1, that is, the top openings of the inner cavities of the first control member 4 and the first runner member 1 are sealed from the upper side, gas enters the first runner member 1 from the flow dividing member 28 and passes through the first flow guiding tube, the first runner portion 8 and the first channel 17 in sequence, then enters the first runner member 1 and flows into the second channel 18 along the inner cavity thereof, then flows out of the first control member 4 from the second channel 18 and enters the first cylindrical cavity 6, then flows out of the third runner portion 10, and the flow direction of the gas is shown by an arrow A2.

Referring to fig. 1 to 6 and 9, the fluid control mechanism 200 is in the third state, when the first control member 4 is pressed, the top openings of the inner cavities of the first control member 4 and the first runner member 1 are closed at the same time, the first control member 4 drives the first runner member 1 to move downwards, the protruding portion 21 closes the first runner portion 8, and the liquid enters from the flow dividing member 28 and flows through the second flow guiding tube and the second runner portion 9 to the flow passing portion 19 in sequence, and then flows out from the fourth runner portion 11, and the flow direction of the liquid is shown by arrow A3.

Referring to fig. 1 to 6, 10 and 11, when the waste liquid needs to be discharged, the second control member 5 is pressed, the closing portion 30 does not close the fifth runner portion 15 any more, the first cavity 24 of the guiding portion 22 communicates with the second cavity 25, the fifth runner portion 15 and the sixth runner portion 16, the waste liquid sequentially passes through the sixth runner portion 16, the first cavity 24, the second cavity 25, the fifth runner portion 15 and the first pipe portion 29 and flows out of the flow divider 28, and the waste liquid is smoothly discharged, and the flow direction of the waste liquid is indicated by an arrow B1. Therefore, both the liquid channel and the gas channel are disposed in a fluid control mechanism 200, which is convenient for the user to use the endoscope.

Referring to fig. 12 to 14, the actuating mechanism 300 includes a first rotating member 32, a second rotating member 33 and a first connecting member 34, the first connecting member 34 passes through the first rotating member 32, a first end of the first connecting member 34 is inserted into the second rotating member 33, and a second end of the first connecting member 34 is inserted into the holder 31 of the endoscope 100. The first rotating assembly 32 includes a first knob 35, a first positioning member 36 and a first control member 37, and the second rotating assembly 33 includes a second knob 38, a second positioning member 39 and a control member. The first knob 35, the first positioning member 36, the first control member 37, the second knob 38 and the second positioning member 39 are all integrally formed.

Referring to fig. 12 and 13, a first circular truncated cone cavity 40 is disposed in the first knob 35, the first knob 35 and the first control member 37 are both rotatably connected to the first positioning member 36, the first portion 41 of the first positioning member 36 is located in the first knob 35, the second portion 42 of the first positioning member 36 passes through the first control member 37, the plurality of first positioning pieces 43 of the first knob 35 are uniformly disposed along the circumferential direction of the first circular truncated cone cavity 40, the plurality of first positioning pieces 45 of the first positioning member 36 are uniformly disposed along the circumferential direction of the first circular truncated cone cavity 40, the plurality of first control portions 46 of the first control member 37 are uniformly disposed along the circumferential direction of the first circular truncated cone cavity 40, each first positioning piece 43 extends from the first bottom surface of the first knob 35 to the first positioning member 36 along the rotation axis of the first circular truncated cone cavity 40, each first positioning piece 45 can swing along the rotation axis of the first cavity 40 relative to the first portion 41, the first control portion 46 extends from the end surface of the first control member 45 of the first circular truncated cone cavity 37 to the first positioning piece 45 along the rotation axis of the first circular truncated cone cavity 40, and the first control portion 45 is disposed opposite to the first positioning piece 46 along the rotation axis 46 along the first rotation axis of the first circular truncated cone cavity 40. In the present embodiment, the first positioning portions 45 and the first control portions 46 are provided one by one, the number of the first positioning portions 45 is three, and the number of the first control portions 46 is provided three.

The first plate portion 47 of the first knob 35 is provided with a first through hole 48, the first through hole 48 is a polygonal through hole, and the first through hole 48 communicates with the first circular truncated cone cavity 40.

The first positioning member 36 includes a plurality of first positioning regions uniformly arranged along the circumferential direction of the first circular truncated cone cavity 40, each of which penetrates the first portion 41. Each first positioning region is provided with a first positioning portion 45, and the first positioning portion 45 extends from the first side wall of the first positioning region to the second side wall of the first positioning region along the circumferential direction of the first circular truncated cone cavity 40.

The first control member 37 includes a circular ring portion 49 and a square bar portion 50 connected to each other, and the first control portion 46 is located on an upper end surface of the circular ring portion 49.

Referring to fig. 12 and 14, a second circular truncated cone cavity is disposed in the second knob 38, both the second knob 38 and the second positioning member 39 are rotatably connected to the control assembly, the second positioning member 39 is located in the second knob 38, a portion of the control assembly is exposed out of the second knob 38, and another portion of the control assembly is located in the second knob 38. The control assembly includes a first rotating member 51 and a second rotating member 52 removably fixedly coupled to each other, a portion of the first rotating member 51 being exposed to the second knob 38, the second rotating member 52 being positioned within the second rotating assembly 33. In the present embodiment, the first rotating member 51 and the second rotating member 52 are all integrally formed.

The second plate portion 53 of the second knob 38 is provided with a second through hole 54, the second through hole 54 is a polygonal through hole, the second through hole 54 communicates with a second circular truncated cone cavity, and the first circular truncated cone cavity 40 and the second circular truncated cone cavity are coaxially arranged.

The plurality of second positioning pieces 55 of the second knob 38 are uniformly arranged along the circumferential direction of the second round table cavity, the plurality of second positioning portions 56 of the second positioning piece 39 are uniformly arranged along the circumferential direction of the second round table cavity, the plurality of second control portions 57 of the control assembly are uniformly arranged along the circumferential direction of the second round table cavity, the second control portions 57 are positioned on the lower end face of the second rotating piece 52, each second positioning piece 55 extends from the second bottom face of the second knob 38 to the second positioning piece 39 along the rotation axis of the second round table cavity, each second positioning portion 56 can swing relative to the plate portion of the second positioning portion 56 along the rotation axis of the second round table cavity, and the second positioning portion 56 and the second control portion 57 are oppositely arranged along the rotation axis of the second round table cavity. In the present embodiment, the second positioning portions 56 and the second control portions 57 are provided one by one, the number of the second positioning portions 56 is three, and the number of the second control portions 57 is provided three.

The second positioning piece 39 comprises a plurality of first positioning areas uniformly arranged along the circumferential direction of the second round platform cavity, the first positioning areas penetrate through the circular plate part of the second positioning piece 39, each second positioning area is provided with a second positioning part 56, and the second positioning parts 56 extend from the third side wall of the second positioning area to the fourth side wall of the second positioning area along the circumferential direction of the second round platform cavity.

Referring to fig. 12 to 14, a first knob 35 assembly may be used to control the up-down bending direction of the insertion portion, and a second knob 38 assembly may be used to control the left-right bending direction of the insertion portion. The first rotating member 58 of the endoscope 100 is inserted into the first through hole 48, the second rotating member 59 of the endoscope 100 is inserted into the second through hole 54, the cylinder of the first rotating member 58 abuts against the wall of the first through hole 48, and the cylinder of the second rotating member 59 abuts against the wall of the second through hole 54. The first knob 35 rotates and drives the first rotating member 58 to rotate, the first rotating member 58 drives the insertion portion to bend in the up-down direction through the steel wire wound around the wheel portion of the first rotating member 58, when the insertion portion bends to a proper angle in the up-down direction, the user rotates the first control member 37, the first control portion 46 pushes the first positioning portion 45 to swing towards the first positioning piece 43, the first positioning portion 45 abuts against the first positioning piece 43, and the first knob 35 cannot rotate under the action of the first positioning portion 45.

Similarly, the second knob 38 rotates and drives the second rotating member 59 to rotate, the second rotating member 59 drives the insertion portion to bend in the left-right direction through the steel wire wound around the wheel portion of the second rotating member 59, when the insertion portion bends to a proper angle in the left-right direction, the user rotates the first rotating member 51, the first rotating member 51 drives the second rotating member 52 to rotate, the second control portion 57 pushes the second positioning portion 56 to swing towards the second positioning piece 55, the second positioning portion 56 abuts against the second positioning piece 55, and the second knob 38 cannot rotate under the action of the second positioning portion 56.

Therefore, the user can adjust the other bending direction of the insertion portion with one of the up-down or left-right directions of the insertion portion fixed, so that the user can use the endoscope 100. Similarly, the first knob 35 assembly may be used to control the lateral bending direction of the insertion portion and the second knob 38 assembly may be used to control the vertical bending direction of the insertion portion, in which case the use of the actuation mechanism 300 is not affected.

Referring to fig. 15 to 17, the connection mechanism 500 includes a connection assembly including a first member 61 and a second member 62 which are screw-coupled to each other, and a second connection member 60 which is movably inserted into the first member 61 and the second member 62, a portion of the second connection member 60 being wound around a rotation member of the endoscope 100, the rotation member including a first rotation member 58 and a second rotation member 59, and the second connection member 60 being a steel wire.

The first member 61 includes a first abutting portion 63 and a first connecting portion 64 that are connected to each other, the first abutting portion 63 is a square cylinder, the first connecting portion 64 is a cylinder, the first abutting portion 63 and the first connecting portion 64 are hollow cylinders, an inner cavity of the first abutting portion 63 is communicated with an inner cavity of the first connecting portion 64, and threads are provided on an inner wall of the first connecting portion 64.

The second piece 62 includes a second abutting portion 65 and a second connecting portion 66 that are connected to each other, the second abutting portion 65 is a square cylinder, the second connecting portion 66 is a cylinder, the second abutting portion 65 and the second connecting portion 66 are hollow cylinders, an inner cavity of the second abutting portion 65 is communicated with an inner cavity of the second connecting portion 66, and threads are provided on an outer wall of the second connecting portion 66.

The first abutting portion 63 is a hexagonal prism, the second abutting portion 65 is a hexagonal prism, and the inner wall of the first connecting portion 64 is screwed to the outer wall of the second connecting portion 66.

The connection mechanism further includes a fixing base 67, and the fixing base 67 is engaged with the bracket 31 of the endoscope 100. The second connection member 60 passes through the fixing seat 67, and the fixing seat 67 is provided with four through holes 68, and each through hole 68 is inserted with one second connection member 60. The bracket 31 is provided with a clamping part 69, the clamping part 69 is clamped on the fixing seat 67, and the clamping part 69 is a right trapezoid column.

The connecting structure further comprises limiting pieces 70, the limiting pieces 70 are detachably assembled on the bracket 31, the second connecting pieces 60 penetrate through the limiting pieces 70, the number of the limiting pieces 70 is four, and the bracket 31 clamps the limiting pieces 70 on the bracket 11 through bolts and nuts.

The connecting mechanism further comprises positioning members 71, one ends of the positioning members 71 are inserted into the through holes 68 of the fixing base 67, the positioning members 71 are springs, a second connecting member 60 is arranged in each positioning member 71 in a penetrating mode, and the positioning members 71 can prevent the second connecting members 60 from being mutually wound. In the prior art, the positioning member 71 is usually welded to a cylindrical clamping seat, and then the clamping seat is clamped to the fixing seat. In this embodiment, the positioning member 71 is inserted into the fixing seat 67, so that the clamping seat is omitted, the assembly process is simplified, and the assembly difficulty is reduced.

The connection mechanism further includes a fixing member 72, one end of the second connection member 60 is fixedly connected to the fixing member 72, and the second connection member 60 passes through the fixing member 72. The fixing member 72 is a metal pipe body, and the second connecting member 60 may be welded or press-fitted to the fixing member 72.

The number of the connecting components is four, two connecting components are respectively arranged on two sides of the bracket 11, each connecting component is provided with two second connecting pieces 60, and each first piece 61 and each second piece 62 are respectively connected with one second connecting piece 60.

Referring to fig. 15 to 17, the number of rotation members is two, the rotation members include a first rotation member 58 and a second rotation member 59, which control the left-right bending direction and the up-down bending direction of the bending portion, respectively, each rotation member is wound with a second connection member 60, both ends of the second connection member 60 wound around the rotation member are connected with a first member 61, respectively, and each rotation member is connected with a first member 61 through the second connection member 60. The user drives the rotating member to rotate through the knob, the rotating member drives the second connecting member 60 to move, and the second connecting member 60 drives the first member 61 or the other second connecting member 60 to move through the fixing member 72, so that the second member 62 moves along with the moving member, and further bending of the bending portion is achieved. Further, when the first member 61 abuts against the stopper 70, the bending portion reaches the maximum bending angle.

Therefore, a part of the second connecting piece 60 is wound on the rotating piece, the second connecting piece 60 is movably inserted into the first piece 61 and the second piece 62, and the first piece 61 and the second piece 62 are in threaded connection with each other, so that a larger applicable tolerance range can be provided during assembly, the precision requirement of parts is reduced, the assembly process is simplified, the assembly error caused by more assembly processes is avoided, and meanwhile, the production cost is reduced.

The gas passes through the first channel part 8 and the first channel 17 in sequence, enters the first channel piece 1 and flows out of the first control piece 4 along the inner cavity of the first channel piece; when the inner cavities of the first control member 4 and the first runner member 1 are closed from the outside, the gas passes through the first runner section 8, the first channel 17, then enters the first runner member and flows into the second channel 18 along the inner cavity thereof, then flows out of the first control member 4 from the second channel 18 and into the first cylindrical cavity, and then flows out of the third runner section 10; when the first control member 4 is pressed, the first control member 4 drives the first runner member 1 to move downwards, the protruding part seals the first runner part 8, and the liquid flows from the second runner part to the circulation part and then flows out from the fourth runner part; when the waste liquid is required to be discharged, the second control piece is pressed, the closing part does not close the fifth runner part any more, the first cavity of the flow guiding part is communicated with the second cavity, the fifth runner part and the sixth runner part, and the waste liquid flows out through the sixth runner part, the first cavity, the second cavity and the fifth runner part in sequence, so that the waste liquid is discharged smoothly. Therefore, the liquid channel and the gas channel are both arranged on a fluid control mechanism, so that the endoscope is convenient for a user to use; the first knob assembly can be used for controlling the vertical bending direction of the insertion part, the second knob assembly can be used for controlling the left-right bending direction of the insertion part, the first control part pushes the first positioning part to swing towards the first positioning piece, the first positioning part is abutted against the first positioning piece, the first knob cannot rotate under the action of the first positioning part, the second control part pushes the second positioning part to swing towards the second positioning piece, the second positioning part is abutted against the second positioning piece, and the second knob cannot rotate under the action of the second positioning part, so that a user can adjust the other bending direction of the insertion part under the condition that one direction of the vertical direction or the left-right direction of the insertion part is fixed, and the endoscope is convenient for the user to use; the second connecting piece is partly coiled in the rotating piece, and the second connecting piece is movably inserted in the first piece and the second piece, so that the first piece and the second piece are in threaded connection with each other, the assembly has a larger applicable tolerance range, the precision requirement of parts is reduced, the assembly process is simplified, the assembly error caused by more assembly processes is avoided, and meanwhile, the production cost is reduced.

Therefore, the user can adjust the other bending direction of the insertion portion with one of the up-down or left-right directions of the insertion portion fixed, so that the user can use the endoscope 100. Similarly, the first knob 35 assembly may be used to control the lateral bending direction of the insertion portion and the second knob 8 assembly may be used to control the vertical bending direction of the insertion portion, in which case the use of the actuation mechanism 200 is not affected.

Finally, it should be emphasized that the present invention is not limited to the above-described embodiments, but is merely preferred embodiments of the invention, and any modifications, equivalents, improvements, etc. within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims (10)

1. An endoscope, characterized in that the endoscope comprises a bracket, a fluid control mechanism, an actuating mechanism and a connecting mechanism, wherein the actuating mechanism, the connecting mechanism and the fluid control mechanism are assembled on the bracket,

the fluid control mechanism comprises a main body, a first runner piece, a second runner piece, a first control piece and a second control piece, wherein the first runner piece and the second runner piece are movably inserted into the main body, the first control piece is sleeved at one end of the first runner piece, the second control piece is sleeved at one end of the second runner piece, an inner cavity of the first control piece and an inner cavity of the first runner piece are coaxially arranged, and the first control piece is a hollow piece;

a first cylindrical cavity is arranged in a first part of the main body, the first cylindrical cavity is communicated with a first runner part, a second runner part, a third runner part and a fourth runner part of the first part, and the first runner part, the second runner part, the third runner part and the fourth runner part are all hollow;

the second part of the main body is provided with a second cylindrical cavity, the second cylindrical cavity is communicated with a fifth runner part and a sixth runner part of the second part, and the fifth runner part and the sixth runner part are hollow;

the first runner piece is hollow, the first runner piece is provided with a first channel, a second channel and a circulation part, the first channel and the second channel penetrate through the first runner piece along the radial direction of the first cylindrical cavity, the first channel and the second channel are arranged along the rotation axis of the first cylindrical cavity, two ends of the circulation part are respectively provided with a baffle, the diameter of the baffle is larger than the diameter of the outer wall of the circulation part, and a protruding part is arranged between the first channel and the circulation part;

the second flow passage piece is provided with a flow guide part and an isolation part, a first cavity and a second cavity of the flow guide part are both cylinders, the rotation axis of the first cavity is intersected with the rotation axis of the second cavity, the second control piece is sleeved at one end of the isolation part, the flow guide part is provided with a sealing part, and the sealing part is positioned on the outer wall of the first cavity;

the action mechanism comprises a first rotation component, a second rotation component and a first connecting piece, wherein the first connecting piece penetrates through the first rotation component, and the first end of the first connecting piece is inserted into the second rotation component;

the first rotary component comprises a first knob, a first positioning piece and a first control piece, a first round table cavity is formed in the first knob, the first knob and the first control piece are both rotatably connected to the first positioning piece, a first part of the first positioning piece is located in the first knob, a second part of the first positioning piece penetrates through the first control piece, a plurality of first positioning pieces of the first knob are uniformly arranged along the circumferential direction of the first round table cavity, a plurality of first positioning parts of the first positioning piece are uniformly arranged along the circumferential direction of the first round table cavity, a plurality of first control parts of the first control piece are uniformly arranged along the circumferential direction of the first round table cavity, each first positioning piece extends from a first bottom surface of the first round table cavity to the first positioning piece along the rotation axis of the first round table cavity, each first positioning part can swing relative to the first positioning part along the rotation axis of the first round table cavity, and the first positioning parts are relatively arranged along the rotation axis of the first round table cavity;

the second rotating assembly comprises a second knob, a second positioning piece and a control assembly, a second round platform cavity is formed in the second knob, the second knob and the second positioning piece are both rotatably connected to the control assembly, the second positioning piece is located in the second knob, one part of the control assembly is exposed out of the second knob, the other part of the control assembly is located in the second knob, a plurality of second positioning pieces of the second knob are uniformly distributed along the circumferential direction of the second round platform cavity, a plurality of second positioning parts of the second positioning piece are uniformly distributed along the circumferential direction of the second round platform cavity, a plurality of second control parts of the control assembly are uniformly distributed along the circumferential direction of the second round platform cavity, each second positioning piece extends from the second bottom surface of the second round platform cavity to the second positioning piece along the rotation axis of the second round platform cavity, each second positioning part can be distributed along the rotation axis of the second round platform cavity relative to the second positioning plate, and the second round platform cavity can be distributed along the second positioning plate and the second round platform cavity;

the connecting mechanism comprises a connecting assembly and a second connecting piece, the connecting assembly comprises a first piece and a second piece which are connected with each other in a threaded mode, the second connecting piece is movably inserted into the first piece and the second piece, and a part of the second connecting piece is wound on a rotating piece of the endoscope;

the first piece comprises a first abutting part and a first connecting part which are mutually connected, the first abutting part is a square cylinder, the first connecting part is a cylinder, the first abutting part and the first connecting part are hollow cylinders, the inner cavity of the first abutting part is communicated with the inner cavity of the first connecting part, and threads are arranged on the inner wall of the first connecting part;

the second piece comprises a second abutting part and a second connecting part which are mutually connected, the second abutting part is a square cylinder, the second connecting part is a cylinder, the second abutting part and the second connecting part are hollow cylinders, the inner cavity of the second abutting part is communicated with the inner cavity of the second connecting part, and threads are arranged on the outer wall of the second connecting part;

the gas sequentially passes through the first channel part and the first channel, enters the first channel piece and flows out of the first control piece along the inner cavity of the first channel piece; when the inner cavities of the first control piece and the first flow channel piece are closed from the outside, gas enters the first flow channel piece through the first flow channel part and the first channel and flows into the second channel along the inner cavity of the first flow channel piece, and then flows out of the first control piece from the second channel and enters the first cylindrical cavity, and then flows out of the third flow channel part; when the first control piece is pressed, the first control piece drives the first runner piece to move downwards, the protruding part seals the first runner part, and liquid flows from the second runner part to the circulation part and then flows out from the fourth runner part; when the waste liquid is required to be discharged, the second control piece is pressed, the closing part does not close the fifth runner part any more, the first cavity of the flow guiding part is communicated with the second cavity, the fifth runner part and the sixth runner part, and the waste liquid flows out through the sixth runner part, the first cavity, the second cavity and the fifth runner part in sequence.

2. An endoscope as defined in claim 1, wherein:

the fluid control mechanism comprises an elastic piece and a supporting piece, wherein the supporting piece is sleeved on the main body, the first ends of the elastic pieces are abutted to the supporting piece, the number of the elastic pieces is two, the first control piece and the second control piece are respectively abutted to the second ends of the elastic pieces, and the first runner piece and the second runner piece respectively penetrate through one elastic piece.

3. An endoscope as defined in claim 2, wherein:

the fluid control mechanism further comprises a flow dividing piece, a first flow guiding pipe and a second flow guiding pipe, wherein the first flow guiding pipe is connected with the flow dividing piece and the first flow channel part, the second flow guiding pipe is connected with the flow dividing piece and the second flow channel part, and the first pipe part of the flow dividing piece is inserted into the second part.

4. An endoscope according to claim 3, wherein:

the first control piece and the second control piece are both round tables, and the elastic piece is a spring.

5. An endoscope as defined in claim 1, wherein:

the first plate portion of first knob is provided with first through-hole, first through-hole is the polygon through-hole, first through-hole intercommunication first round platform chamber, first setting element includes a plurality of edges the circumference evenly arranged's in first round platform chamber first location district, every first location district runs through first portion, every first location district all is provided with one first location portion, first location portion follows from the first lateral wall in first location district the circumference in first round platform chamber is towards the second lateral wall in first location district extends, first control piece includes interconnect's ring portion and square strip portion, first control portion is located the up end of ring portion.

6. An endoscope as defined in claim 5, wherein:

the control assembly comprises a first rotating member and a second rotating member which are detachably and fixedly connected with each other, a part of the first rotating member is exposed out of the second knob, the second rotating member is positioned in the second rotating assembly, the second control part is positioned on the lower end face of the second rotating member, the second positioning member comprises a plurality of second positioning areas which are uniformly distributed along the circumferential direction of the second round table cavity, the second positioning areas penetrate through the circular plate part of the second positioning member, each second positioning area is provided with one second positioning part, and the third side wall of the second positioning area extends from the circumferential direction of the second round table cavity to the fourth side wall of the second positioning area.

7. An endoscope as defined in claim 6, wherein:

the second end of the first connector is inserted into the support of the endoscope.

8. An endoscope as defined in claim 1, wherein:

the first abutting portion is a hexagonal prism, the second abutting portion is a hexagonal prism, and the inner wall of the first connecting portion is in threaded connection with the outer wall of the second connecting portion.

9. An endoscope as defined in claim 8, wherein:

the connecting mechanism further comprises a fixing seat, positioning pieces, limiting pieces and fixing pieces, wherein the second connecting pieces penetrate through the fixing seat, one ends of the positioning pieces are inserted into the fixing seat, the fixing seat is clamped in a support of the endoscope, the limiting pieces are detachably assembled on the support, the second connecting pieces penetrate through the limiting pieces, the positioning pieces are springs, one ends of the second connecting pieces are fixedly connected with the fixing pieces, the number of the connecting pieces is four, each connecting piece is provided with two second connecting pieces, and each first piece and each second piece are respectively connected with one second connecting piece.

10. An endoscope according to any one of claims 1 to 9, wherein:

the second connecting piece is a steel wire.