CN111407213A - Endoscope - Google Patents

Abstract

The endoscope provided by the invention comprises a support, a fluid control mechanism, an action mechanism and a connecting mechanism, wherein the action mechanism, the connecting mechanism and the fluid control mechanism are assembled on the support; the action mechanism comprises a first rotating assembly, a second rotating assembly and a first connecting piece; the connecting mechanism comprises a connecting component and a second connecting component, wherein the connecting component comprises a first piece and a second piece which are in threaded connection with each other. According to the scheme, the liquid channel and the vapor 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 of the upper direction and the lower direction or the left direction and the right direction of the insertion part are fixed, the user can use the endoscope conveniently, the first piece and the second piece are in threaded connection with each other, so that a larger application tolerance range is achieved 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

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

In an endoscope, an elongated insertion portion has a rigid type and a flexible type. In an endoscope in which an insertion portion is flexible, a bending portion formed by connecting a plurality of bending pieces is generally provided on the distal end side of the insertion portion.

Typically, the flexure is of the following construction: the bending operation device provided in the operation portion is operated to pull and relax the bending line, thereby bending the bending portion. The leading end of the bending wire is fixed to a predetermined position of a leading 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 directed toward the target direction to perform observation, and can be smoothly inserted into the deep portion.

The bending direction of the insertion portion is divided into a vertical direction and a horizontal direction, and the conventional endoscope controls the vertical direction and the horizontal direction of the insertion portion to be bent by an actuating mechanism so as to achieve the purpose of observation. However, when the current endoscope actuating mechanism is used for adjusting one of the two directions, the other direction is easily influenced, so that the endoscope is inconvenient to use.

Further, the bending part is connected to the rotation part through a connection structure. However, the existing connection structure is complex, so that the assembly process is complicated and the cost is high.

Disclosure of Invention

The main object of the present invention is to provide an endoscope which is easy to use and which reduces the production costs.

In order to achieve the above main object, the endoscope provided by the present invention comprises a support, a fluid control mechanism, an actuating mechanism and a connecting mechanism, wherein the actuating mechanism, the connecting mechanism and the fluid control mechanism are all assembled on the support, the fluid control mechanism comprises a main body, a first flow passage member, a second flow passage member, a first control member and a second control member, the first flow passage member and the second flow passage member are movably inserted into the main body, the first control member is sleeved on one end of the first flow passage member, the second control member is sleeved on one end of the second flow passage member, an inner cavity of the first control member and an inner cavity of the first flow passage member are coaxially arranged, and the first control member is a hollow member; a first cylindrical cavity is arranged in the 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 arranged in a hollow mode; 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 both arranged in a hollow manner; the first flow channel part is arranged in a hollow mode, the first flow channel part 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 channel part along the radial direction of the first cylindrical cavity, the first channel and the second channel are arranged along the rotating axis of the first cylindrical cavity, two ends of the circulating part are provided with partition plates, the diameter of each partition plate is larger than that 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 channel part is provided with a flow guide part and an isolation part, the first cavity and the second cavity of the flow guide part are both cylinders, the rotary axis of the first cavity is intersected with the rotary axis of the second cavity, the second control part 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 rotating assembly, a second rotating assembly and a first connecting piece, the first connecting piece penetrates through the first rotating assembly, and the first end of the first connecting piece is inserted into the second rotating assembly; the first rotation assembly includes a first knob, the first knob is internally provided with a first circular table cavity, the first knob and the first control piece are both rotatably connected to the first positioning piece, the first part of the first positioning piece is positioned in the first knob, the 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 circular table cavity, a plurality of first positioning parts of the first positioning piece are uniformly arranged along the circumferential direction of the first circular table cavity, a plurality of first control parts of the first control piece are uniformly arranged along the circumferential direction of the first circular table cavity, each first positioning piece extends from the first bottom surface of the first knob to the first positioning piece along the rotation axis of the first circular table cavity, each first positioning part can swing relative to the first part along the rotation axis of the first circular table cavity, and the first positioning parts and the first control parts are oppositely arranged along the rotation axis of the first circular table cavity; the second rotation assembly includes a second knob, the second positioning part and the control assembly are arranged in the second knob, the second knob and the second positioning part are both rotatably connected to the control assembly, the second positioning part is positioned 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 positioned in the second knob, a plurality of second positioning pieces of the second knob are uniformly arranged along the circumferential direction of the second circular table cavity, a plurality of second positioning parts of the second positioning part are uniformly arranged along the circumferential direction of the second circular table cavity, a plurality of second control parts of the control assembly are uniformly arranged along the circumferential direction of the second circular table cavity, each second positioning piece extends from the second bottom surface of the second knob to the second positioning part along the rotation axis of the second circular table cavity, each second positioning part can swing relative to the plate part of the second circular table cavity along the rotation axis of the second circular table cavity, and the second positioning parts and the second control parts are oppositely arranged along the rotation axis of the second circular table cavity; the connecting mechanism comprises a connecting component and a second connecting component, the connecting component comprises a first piece and a second piece which are in threaded connection with each other, the second connecting component is movably inserted into the first piece and the second piece, and one part of the second connecting component is wound on a rotating piece of the endoscope; the first piece comprises a first abutting part and a first connecting part which are connected with each other, the first abutting part is a square column body, the first connecting part is a cylinder body, the first abutting part and the first connecting part are both hollow column bodies, 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 column body, and second connecting portion are the cylinder, and second butt portion and second connecting portion are the cavity cylinder, the inner chamber intercommunication second connecting portion's of second butt portion inner chamber, and 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 channel part and the first channel to enter the first flow channel part and flow out of the first control part along the inner cavity of the first flow channel part; when the inner cavities of the first control piece and the first flow channel piece are closed from the outer side, gas enters the first flow channel piece after passing 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, enters the first cylindrical cavity and flows out of the third flow channel part; when the first control piece is pressed, the first control piece drives the first flow passage piece to move downwards, the protruding part seals the first flow passage part, and liquid flows from the second flow passage part to the circulating part and then flows out of the fourth flow passage part; when the waste liquid needs to be discharged, the second control piece is pressed, the sealing part does not close the fifth flow channel part any more, the first cavity and the second cavity of the flow guide part are communicated with the fifth flow channel part and the sixth flow channel part, and the waste liquid flows out through the sixth flow channel part, the first cavity, the second cavity and the fifth flow channel part in sequence, so that the waste liquid is smoothly discharged. Therefore, the liquid channel and the gas channel are both arranged on a fluid control mechanism, which is convenient for users to use the endoscope;

the first knob assembly can be used for controlling the up-and-down bending direction of the insertion part, the second knob assembly can be used for controlling the left-and-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 abuts 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 abuts 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 of the up-and-down direction or the left-and-right direction of the insertion part is fixed, and the endoscope can be conveniently used by the user;

one part of the second connecting piece is wound on the rotating piece, the second connecting piece is movably inserted into the first piece and the second piece, the first piece and the second piece are in threaded connection with each other, so that a large applicable tolerance range can be achieved during assembly, the precision requirement of parts is reduced, the assembly process is simplified, the problem that assembly errors occur due to the fact that the assembly process is multiple is avoided, and meanwhile, the production cost is reduced.

Drawings

The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived on the basis of the following drawings without inventive effort.

FIG. 1 is a block diagram of an embodiment of an endoscope according to the present invention.

Fig. 2 is a partial 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 of the present invention.

Fig. 4 is a structural 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 structural 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 shown in fig. 7 in another state.

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

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

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

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

Fig. 13 is an exploded view of the first rotating assembly of an embodiment of the actuator of the present invention.

Fig. 14 is a structural sectional view of a second rotating member of an embodiment of an actuator according to the present invention.

FIG. 15 is a block diagram of a coupling mechanism of an endoscope embodiment of the present invention.

FIG. 16 is a partial cross-sectional view of an embodiment of a coupling mechanism according to the present invention.

FIG. 17 is a partial cross-sectional view of a coupling mechanism according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 17, the endoscope 100 provided by 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 flow channel member 1, a second flow channel member 2, a main body 3, a first control member 4, and a second control member 5, the first flow channel member 1 and the second flow channel member 2 are both movably inserted into the main body 3, the first control member 4 is sleeved on one end of the first flow channel member 1, the second control member 5 is sleeved on one end of the second flow channel member 2, an inner cavity of the first control member 4 and an inner cavity of the first flow channel member 1 are coaxially arranged, the first control member 4 is a hollow member, the first flow channel member 1, the second flow channel 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, the main body 3 is engaged with the holder 31 of the endoscope 100.

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

Referring to fig. 2 and 4, the first flow channel member 1 is hollow, the first flow channel member 1 is provided with a first passage 17, a second passage 18 and a circulating part 19, the first passage 17 and the second passage 18 penetrate through the first flow channel member 1 along the radial direction of the first cylindrical cavity 6, the first passage 17 and the second passage 18 are arranged along the rotation axis of the first cylindrical cavity 6, two ends of the circulating part 19 are both provided with partition plates 20, the diameter of each partition plate 20 is larger than that of the outer wall of the circulating part 19, a protruding part 21 is arranged between the first passage 17 and the circulating part 19, and the first flow channel member 1 is an integrally formed part.

Referring to fig. 2 and 5, the second flow channel member 2 is provided with a flow guide portion 22 and an isolation portion 23, the first cavity 24 and the second cavity 25 of the flow guide portion 22 are both cylinders, the rotation axis of the first cavity 24 intersects with the rotation axis of the second cavity 25, the second control member 5 is sleeved at one end of the isolation portion 23, and the second flow channel member 2 is an integrally formed member. The flow guide 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 the elastic members 26 is two. The second ends of the elastic members 26 abut against the inside of the first control member 4 and the second control member 5. The first flow passage member 1 and the second flow passage member 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 flow divider 28, a first flow pipe and a second flow pipe, the first flow pipe connects the flow divider 28 and the first flow passage portion 8, the second flow pipe connects the flow divider 28 and the second flow passage portion 9, and the first pipe portion 29 of the flow divider 28 is inserted into the second portion 12.

Referring to fig. 1 to 7, the fluid control mechanism 200 is in the first state, and the gas enters from the flow divider 28, passes through the first flow guide tube, the first flow passage portion 8, the first channel 17, enters the first flow passage member 1, and flows out of the first control member 4 along the inner cavity thereof, and the flow direction of the gas is shown by the arrow a.

Referring to fig. 1 to 6 and 8, when the fluid control mechanism 200 is in the second state and the inner cavities of the first control element 4 and the first flow passage element 1 are closed at the outer side, that is, the top openings of the inner cavities of the first control element 4 and the first flow passage element 1 are closed from the upper part, the gas enters from the flow dividing element 28, passes through the first flow guide pipe, the first flow passage portion 8 and the first passage 17 in sequence, enters into the first flow passage element 1 and flows into the second passage 18 along the inner cavity thereof, and then flows out of the first control element 4 from the second passage 18, enters into the first cylindrical cavity 6, and then flows out of the third flow passage portion 10, wherein the flow direction of the gas is indicated by arrow a 2.

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 flow channel member 1 are simultaneously closed from the upper portion, the first control member 4 drives the first flow channel member 1 to move downward, the protrusion portion 21 closes the first flow channel portion 8, the liquid enters from the flow dividing member 28, sequentially passes through the second flow guide tube and the second flow channel portion 9, flows to the flow portion 19, and then flows out from the fourth flow channel portion 11, and the flow direction of the liquid is shown as an arrow a 3.

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 no longer closes the fifth flow channel portion 15, the first cavity 24 and the second cavity 25 of the flow guide portion 22 communicate the fifth flow channel portion 15 and the sixth flow channel portion 16, the waste liquid flows out of the flow divider 28 through the sixth flow channel portion 16, the first cavity 24, the second cavity 25, the fifth flow channel portion 15 and the first tube portion 29 in sequence, so as to smoothly discharge the waste liquid, and the flow direction of the waste liquid is shown by an arrow B1. Thus, both the liquid channel and the gas channel are disposed in a fluid control mechanism 200, which facilitates the use of the endoscope by the user.

Referring to fig. 12 to 14, the actuating mechanism 300 includes a first rotating assembly 32, a second rotating assembly 33 and a first connecting member 34, the first connecting member 34 passes through the first rotating assembly 32, a first end of the first connecting member 34 is inserted into the second rotating assembly 33, and a second end of the first connecting member 34 is inserted into the bracket 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 table 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 disposed in the first knob 35, the second portion 42 of the first positioning member 36 passes through the first control member 37, the first positioning pieces 43 of the first knob 35 are uniformly arranged along the circumferential direction of the first circular table cavity 40, the first positioning pieces 45 of the first positioning member 36 are uniformly arranged along the circumferential direction of the first circular table cavity 40, the first control portions 46 of the first control member 37 are uniformly arranged along the circumferential direction of the first circular table 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 table cavity 40, each first positioning piece 45 can swing relative to the first portion 41 along the rotation axis of the first circular table cavity 40, and the first control portion 46 extends from the end surface 45 of the first positioning member 35 to the first positioning member 36 along the rotation axis of the first circular table cavity 40 The first positioning portion 45 and the first control portion 46 are disposed opposite to each other along the axis of rotation of the first stage chamber 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 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 table cavity 40.

The first positioning member 36 includes a plurality of first positioning regions uniformly arranged along a circumferential direction of the first circular truncated cone cavity 40, and each of the first positioning regions extends through the first portion 41. Each first positioning area is provided with a first positioning portion 45, and the first positioning portion 45 extends from the first sidewall of the first positioning area to the second sidewall of the first positioning area along the circumferential direction of the first circular platform 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 platform cavity is disposed in the second knob 38, the second knob 38 and the second positioning member 39 are both rotatably connected to the control assembly, the second positioning member 39 is disposed in the second knob 38, a portion of the control assembly is exposed from the second knob 38, and another portion of the control assembly is disposed in the second knob 38. The control assembly comprises a first rotating member 51 and a second rotating member 52 detachably and fixedly connected with each other, a portion of the first rotating member 51 is exposed out of the second knob 38, and the second rotating member 52 is located in the second rotating assembly 33. In the present embodiment, the first rotating member 51 and the second rotating member 52 are integrally formed.

The second plate part 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 is communicated 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 circular 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 circular table cavity, the plurality of second control portions 57 of the control assembly are uniformly arranged along the circumferential direction of the second circular table cavity, the second control portions 57 are located 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 circular 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 circular table cavity, and the second positioning portion 56 and the second control portion 57 are relatively arranged along the rotation axis of the second circular table cavity. In the present embodiment, the second positioners 56 and the second controls 57 are provided one by one, the number of the second positioners 56 is three, and the number of the second controls 57 is correspondingly provided three.

The second positioning element 39 includes a plurality of first positioning areas uniformly arranged along the circumferential direction of the second circular truncated cone cavity, the first positioning areas penetrate through the circular plate portion of the second positioning element 39, each second positioning area is provided with a second positioning portion 56, and the second positioning portions 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 circular truncated cone cavity.

Referring to fig. 12-14, 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 column of the first rotating member 58 abuts against the hole wall of the first through hole 48, and the column of the second rotating member 59 abuts against the hole 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 inserting portion to bend along the up-down direction through the steel wire wound on the wheel portion of the first rotating member 58, when the inserting portion bends to a proper angle along 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 inserting portion to bend along the left-right direction by winding the steel wire on the wheel portion of the second rotating member 59, when the inserting portion bends to a proper angle along 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 upper and lower or left and right directions of the insertion portion fixed, facilitating the user to use the endoscope 100. Similarly, the first knob 35 assembly can be used to control the left and right bending direction of the insertion portion, and the second knob 38 assembly can be used to control the up and down bending direction of the insertion portion, and at this time, the use of the actuating mechanism 300 is not affected.

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

The first piece 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 column, the first connecting portion 64 is a cylinder, the first abutting portion 63 and the first connecting portion 64 are both hollow columns, an inner cavity of the first abutting portion 63 is communicated with an inner cavity of the first connecting portion 64, and an inner wall of the first connecting portion 64 is provided with a thread.

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 column, the second connecting portion 66 is a cylinder, the second abutting portion 65 and the second connecting portion 66 are both hollow columns, an inner cavity of the second abutting portion 65 is communicated with an inner cavity of the second connecting portion 66, and an outer wall of the second connecting portion 66 is provided with a thread.

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 connecting mechanism further comprises a fixed seat 67, and the fixed seat 67 is clamped with the bracket 31 of the endoscope 100. The second connecting piece 60 passes through the fixing seat 67, the fixing seat 67 is provided with four through holes 68, and one second connecting piece 60 is inserted into each through hole 68. The bracket 31 is provided with an engaging portion 69, the engaging portion 69 is engaged with the fixing base 67, and the engaging portion 69 is a right-angled trapezoidal column.

The connecting structure further includes a limiting member 70, the limiting member 70 is detachably assembled to the bracket 31, the second connecting member 60 passes through the limiting member 70, the number of the limiting members 70 is four, and the bracket 31 engages the limiting member 70 with the bracket 11 through a bolt and a nut.

The connecting mechanism further includes positioning members 71, one end of the positioning member 71 is inserted into the through hole 68 of the fixing base 67, the positioning members 71 are springs, a second connecting member 60 is inserted into each positioning member 71, and the positioning members 71 can prevent the second connecting members 60 from being entangled with each other. In the prior art, the positioning member 71 is usually welded to a cylindrical engaging seat, and then the engaging seat is engaged with the fixing seat. The positioning member 71 is inserted into the fixing seat 67 in this embodiment, so that the clamping seat is eliminated, the assembly process is simplified, and the assembly difficulty is reduced.

The connecting mechanism further includes a fixing member 72, one end of the second connecting member 60 is fixedly connected to the fixing member 72, and the second connecting member 60 passes through the fixing member 72. The fixing member 72 is a metal tube, and the second connecting member 60 can be welded or pressed to the fixing member 72.

The quantity of coupling assembling is four, and the both sides of support 11 are provided with two coupling assembling respectively, and each coupling assembling all is provided with two second connecting pieces 60, and each first 61 is connected with a second connecting piece 60 respectively with each second 62.

Referring to fig. 15 to 17, there are two rotating members, each of which includes a first rotating member 58 and a second rotating member 59 for controlling the left and right bending directions and the up and down bending directions of the bending portion, respectively, each of the rotating members is wound with a second coupling member 60, both ends of the second coupling member 60 wound around the rotating member are connected with a first member 61, respectively, and each of the rotating members is connected with a first member 61 through the second coupling member 60. The user drives the rotation member to rotate through the knob, the rotation member then drives the second connecting member 60 to move, 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 therewith, and the bending of the bending portion is realized. 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, the first piece 61 and the second piece 62 are in threaded connection with each other, so that a large applicable tolerance range is achieved during assembly, the precision requirements of parts are reduced, the assembly process is simplified, assembly errors caused by a large number of assembly processes are avoided, and meanwhile, the production cost is reduced.

The gas sequentially passes through the first flow passage part 8 and the first channel 17 to enter the first flow passage part 1 and flow out of the first control part 4 along the inner cavity of the first flow passage part; when the inner cavities of the first control part 4 and the first flow passage part 1 are closed from the outside, the gas enters the first flow passage part after passing through the first flow passage part 8 and the first channel 17 and flows into the second channel 18 along the inner cavity of the first flow passage part, and then the gas flows out of the first control part 4 from the second channel 18 and enters the first cylindrical cavity and then flows out of the third flow passage part 10; when the first control piece 4 is pressed, the first control piece 4 drives the first flow passage piece 1 to move downwards, the protruding part seals the first flow passage part 8, and liquid flows from the second flow passage part to the circulating part and then flows out of the fourth flow passage part; when the waste liquid needs to be discharged, the second control piece is pressed, the sealing part does not close the fifth flow channel part any more, the first cavity and the second cavity of the flow guide part are communicated with the fifth flow channel part and the sixth flow channel part, and the waste liquid flows out through the sixth flow channel part, the first cavity, the second cavity and the fifth flow channel part in sequence, so that the waste liquid is smoothly discharged. Therefore, the liquid channel and the gas channel are both arranged on a fluid control mechanism, which is convenient for users to use the endoscope; the first knob assembly can be used for controlling the up-and-down bending direction of the insertion part, the second knob assembly can be used for controlling the left-and-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 abuts 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 abuts 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 of the up-and-down direction or the left-and-right direction of the insertion part is fixed, and the endoscope can be conveniently used by the user; one part of the second connecting piece is wound on the rotating piece, the second connecting piece is movably inserted into the first piece and the second piece, the first piece and the second piece are in threaded connection with each other, so that a large applicable tolerance range can be achieved during assembly, the precision requirement of parts is reduced, the assembly process is simplified, the problem that assembly errors occur due to the fact that the assembly process is multiple 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 upper and lower or left and right directions of the insertion portion fixed, facilitating the user to use the endoscope 100. Similarly, the first knob 35 assembly can be used to control the left and right bending direction of the insertion portion, and the second knob 8 assembly can be used to control the up and down bending direction of the insertion portion, and at this time, the use of the actuating mechanism 200 is not affected.

Finally, it should be emphasized that the present invention is not limited to the above-described embodiments, but only the preferred embodiments of the invention have been described above, and the present invention is not limited to the above-described embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

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

the fluid control mechanism comprises a main body, a first flow passage piece, a second flow passage piece, a first control piece and a second control piece, wherein the first flow passage piece and the second flow passage piece are movably inserted into the main body, the first control piece is sleeved at one end of the first flow passage piece, the second control piece is sleeved at one end of the second flow passage piece, an inner cavity of the first control piece and an inner cavity of the first flow passage 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, 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 arranged in a hollow manner; a second cylindrical cavity is arranged on the second part of the main body, 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 both arranged in a hollow manner;

the first flow channel piece is arranged in a hollow mode, the first flow channel 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 channel piece along the radial direction of the first cylindrical cavity, the first channel and the second channel are arranged along the rotating axis of the first cylindrical cavity, two ends of the circulating part are provided with partition plates, the diameter of each partition plate is larger than that 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 channel part is provided with a flow guide part and an isolation part, the first cavity and the 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 part 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 actuating mechanism comprises a first rotating assembly, a second rotating assembly and a first connecting piece, the first connecting piece penetrates through the first rotating assembly, and the first end of the first connecting piece is inserted into the second rotating assembly;

the first rotating assembly comprises a first knob, a first positioning member and a first control member, a first circular table cavity is arranged in the first knob, the first knob and the first control member are both rotatably connected to the first positioning member, a first part of the first positioning member is positioned in the first knob, a second part of the first positioning member penetrates through the first control member, a plurality of first positioning sheets of the first knob are uniformly arranged along the circumferential direction of the first circular table cavity, a plurality of first positioning portions of the first positioning member are uniformly arranged along the circumferential direction of the first circular table cavity, a plurality of first control portions of the first control member are uniformly arranged along the circumferential direction of the first circular table cavity, each first positioning sheet extends from a first bottom surface of the first knob to the first positioning member along the rotation axis of the first circular table cavity, and each first positioning portion can swing relative to the first part along the rotation axis of the first circular table cavity, the first positioning part and the first control part are oppositely arranged along the rotation axis of the first circular table cavity;

the second rotating assembly comprises a second knob, a second positioning piece and a control assembly, a second circular table cavity is arranged 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 positioned 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 positioned in the second knob, a plurality of second positioning pieces of the second knob are uniformly arranged along the circumferential direction of the second circular table cavity, a plurality of second positioning portions of the second positioning piece are uniformly arranged along the circumferential direction of the second circular table cavity, a plurality of second control portions of the control assembly are uniformly arranged along the circumferential direction of the second circular table cavity, and 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 circular table cavity, each second positioning part can swing relative to the plate part of the second positioning part along the rotation axis of the second circular table cavity, and the second positioning parts and the second control parts are oppositely arranged along the rotation axis of the second circular table cavity;

the connecting mechanism comprises a connecting component and a second connecting component, the connecting component comprises a first piece and a second piece which are mutually connected in a threaded manner, the second connecting component is movably inserted into the first piece and the second piece, and a part of the second connecting component is wound on a rotating piece of the endoscope;

the first piece comprises a first abutting part and a first connecting part which are connected with each other, the first abutting part is a square column, the first connecting part is a cylinder, the first abutting part and the first connecting part are both hollow columns, 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 connected with each other, the second abutting part is a square column body, the second connecting part is a cylinder, the second abutting part and the second connecting part are hollow column bodies, 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.

2. An endoscope according to claim 1 and also comprising:

the fluid control mechanism comprises an elastic part and a supporting part, the supporting part is sleeved on the main body, the first end of the elastic part is abutted to the supporting part, the number of the elastic parts is two, the second end of the elastic part is abutted to the first control part and the second control part, and the first flow passage part and the second flow passage part penetrate through the elastic part.

3. An endoscope according to claim 2 and also comprising:

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

4. An endoscope according to claim 3 and also comprising:

the first control piece and the second control piece are both truncated cone bodies, and the elastic piece is a spring.

5. An endoscope according to claim 1 and also comprising:

the first board 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 locating piece includes a plurality of edges first locating area that the circumference in first round platform chamber was evenly arranged, every first locating area runs through first portion, every first locating area all is provided with one first locating part, first locating part certainly the first lateral wall in first locating area is followed the circumference in first round platform chamber is toward the second lateral wall in first locating area extends, first control piece includes interconnect's ring portion and square bar portion, first control part is located the up end of ring portion.

6. An endoscope according to claim 5 and also comprising:

the control assembly comprises a first rotating part and a second rotating part which are mutually detachably and fixedly connected, a part of the first rotating part is exposed out of the second knob, the second rotating part is located in the second rotating assembly, the second control part is located on the lower end face of the second rotating part, the second positioning part comprises a plurality of edges, and a first positioning area is uniformly arranged in the circumferential direction of the second circular table cavity and runs through the circular plate part of the second positioning part, and each second positioning area is provided with one second positioning part which runs along the circumferential direction of the second circular table cavity.

7. An endoscope according to claim 6 and also comprising:

the second end of the first connector is inserted into a bracket of the endoscope.

8. An endoscope according to claim 1 and also comprising:

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

9. An endoscope according to claim 8 and also comprising:

the connecting mechanism further comprises a fixing seat, a positioning part, a limiting part and a fixing part, wherein the second connecting part penetrates through the fixing seat, one end of the positioning part is inserted into the fixing seat, the fixing seat is clamped on the support of the endoscope, the limiting part is detachably assembled on the support, the second connecting part penetrates through the limiting part, the positioning part is a spring, one end of the second connecting part is fixedly connected to the fixing part, the number of the connecting components is four, each of the connecting components is provided with two second connecting parts, and each of the first connecting part and the second connecting part is respectively connected with one second connecting part.

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

the second connecting piece is a steel wire.

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