CN115120167A

CN115120167A - Medical endoscope

Info

Publication number: CN115120167A
Application number: CN202211053178.3A
Authority: CN
Inventors: 韩沁驰; 徐根如; 贾彭举
Original assignee: Suzhou Keqin Micro Vision Medical Equipment Co ltd
Current assignee: Beijing Future Cloud Technology Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2022-09-30

Abstract

The invention discloses a medical endoscope, which belongs to the technical field of medical instruments and comprises an insertion part and a handle which are connected, wherein the head end part of the insertion part comprises a head end seat and a light source arranged on the head end seat, and the light source comprises a special-shaped circuit board and a light-emitting piece arranged on the special-shaped circuit board; the handle comprises an angle control mechanism, the angle control mechanism comprises a shaft assembly, a first rotating part, a second rotating part, a first driving plate, a second driving plate, a first locking assembly and a second locking assembly, the shaft assembly comprises a central shaft, a first shaft sleeve sleeved on the central shaft and a second shaft sleeve sleeved on the first shaft sleeve, the first rotating part and the first driving plate are arranged on the first shaft sleeve and rotate synchronously, the second rotating part and the second driving plate are arranged on the second shaft sleeve and rotate synchronously, and the first locking assembly can lock the first driving plate; the second locking assembly may lock the second dial. The invention can fully utilize the limited space of the head end seat, improve the brightness of the light source, control the bending part to bend towards a plurality of directions and ensure that the bending part can be kept fixed in one direction.

Description

Medical endoscope

Technical Field

The invention relates to the technical field of medical instruments, in particular to a medical endoscope.

Background

The medical endoscope is an instrument capable of observing the state of tissues and organs in the human body, and a camera capable of shooting images can be sent to the corresponding tissues and organs in the human body through a pipeline so as to observe the state of the tissues and organs in the human body conveniently.

The light source is an indispensable component of the medical endoscope, and can provide illumination so that the camera module can clearly acquire images of corresponding positions of human organs. As the size of medical endoscopes continues to decrease, it is desirable that the light source be correspondingly reduced in size while ensuring sufficient brightness. However, the conventional light source is generally square or circular in shape, so that the whole volume of the light source is large, the occupied space is large, and the space cannot be fully utilized.

In addition, the medical endoscope is equipped with a control mechanism that can control the bending of the bending portion thereof. The control mechanism controls the bending part to bend towards the required direction so as to observe the required position. However, in the current medical endoscope, the control mechanism does not usually have a lock function, and thus the bending portion cannot be kept fixed in a certain direction. Even if the control mechanism of some medical endoscopes has lock control, the structure and operation of the control mechanism are relatively complicated.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

The invention aims to provide a medical endoscope which can fully utilize the limited head end seat space, improve the brightness of a light source, control a bending part to bend in multiple directions and keep the bending part fixed in one direction.

To achieve the above object, an embodiment of the present invention provides a medical endoscope including:

the insertion part comprises a connecting part, a bending part and a head end part, the bending part is connected between the connecting part and the head end part, the head end part comprises a head end seat and a light source arranged on the head end seat, and the light source comprises a special-shaped circuit board and a light-emitting part arranged on the special-shaped circuit board;

the handle, with connecting portion link to each other, including being used for control the crooked angle control mechanism of flexion, angle control mechanism includes:

the shaft assembly comprises a central shaft, a first shaft sleeve sleeved outside the central shaft and a second shaft sleeve sleeved outside the first shaft sleeve;

the first rotating piece is sleeved outside the central shaft and connected with one end of the first shaft sleeve, the second rotating piece is sleeved outside the first shaft sleeve and connected with one end of the second shaft sleeve, and the first rotating piece and the second rotating piece are connected with the bending part through corresponding traction ropes respectively;

the first driving plate is sleeved outside the central shaft and connected with the other end of the first shaft sleeve, and the second driving plate is sleeved outside the first shaft sleeve and connected with the other end of the second shaft sleeve;

a first locking component which is in contact with the first dial and can control locking of the first dial;

a second locking assembly in contact with the second dial that controls locking of the second dial.

In one or more embodiments of the present invention, the special-shaped circuit board includes a first carrying portion for carrying the light emitting element, a connecting portion, and a second carrying portion for carrying the light emitting element, one end of the connecting portion is connected to the first carrying portion, an opposite end of the connecting portion is connected to the second carrying portion, and an area of a cross section of the first carrying portion and an area of a cross section of the second carrying portion gradually increase from an end of the connecting portion to a direction away from the end.

In one or more embodiments of the present invention, the first rotating member is a first rotating gear, the second rotating member is a second rotating gear, the angle control mechanism further includes a first timing belt and a second timing belt, the first timing belt is engaged with the first rotating gear and disposed around the first rotating gear, both ends of the first timing belt are connected to the bending portion through a traction rope, respectively, the second timing belt is engaged with the second rotating gear and disposed around the second rotating gear, and both ends of the second timing belt are connected to the bending portion through a traction rope, respectively.

In one or more embodiments of the present invention, each pulling rope is connected to the corresponding synchronous belt through a first adjusting element, the first adjusting element includes an adjusting body and a plug connector, the adjusting body is provided with a plurality of insertion slots arranged at intervals, and the plug connector can be inserted into the insertion slot.

In one or more embodiments of the present invention, the center shaft is in point contact with the first sleeve, and the second sleeve is in point contact with the first sleeve.

In one or more embodiments of the invention, the angle control mechanism further comprises a separating member for separating the pulling ropes from each other, and the separating member is provided with a plurality of separating channels for the pulling ropes to pass through.

In one or more embodiments of the present invention, the first locking assembly includes a rotating member, a first locking plate and a second locking plate, the first locking plate and the second locking plate are rotatably assembled on the central shaft, the second locking plate is disposed between the first locking plate and the first driving plate, the rotating member is connected to the first locking plate and rotates synchronously, and a friction force between the second locking plate and the first driving plate gradually increases as the first locking plate rotates in a preset direction.

In one or more embodiments of the present invention, the second locking assembly includes a lifting member and a shift lever, both of which are sleeved outside the second shaft sleeve, the lifting member is located between the second dial and the shift lever, and a friction force between the lifting member and the second dial is gradually increased as the shift lever rotates in a preset direction.

In one or more embodiments of the present invention, a first elastic member is provided between the lift member and the second dial.

In one or more embodiments of the present invention, the medical endoscope further includes a water-gas control mechanism including:

the first shell is provided with an accommodating cavity and a bearing part, the first shell is provided with an air inlet and a water inlet which are communicated with the accommodating cavity, the bearing part is provided with an air outlet flow passage and a water outlet flow passage which are communicated with the accommodating cavity, and a one-way valve is arranged in the air outlet flow passage;

the second shell is detachably connected with the bearing part and is provided with a water vapor outlet communicated with the air outlet flow channel and the water outlet flow channel;

the operating piece is movably assembled in the accommodating cavity and is provided with a first air flow channel which axially extends and penetrates through two end parts, the operating piece controls the air inlet to be communicated with the air outlet flow channel through the first air flow channel when air enters, and the operating piece controls the water inlet to be communicated with the water outlet flow channel when water enters.

In one or more embodiments of the present invention, the medical endoscope further includes a suction mechanism including:

the control valve comprises a valve seat and a valve core, wherein the valve seat is provided with an accommodating cavity extending axially, and a suction inlet and a suction outlet which are communicated with the accommodating cavity; the valve core is movably assembled in the containing cavity and provided with a second air flow channel extending along the axial direction, the second air flow channel is communicated with the suction outlet and external air when not sucked, a fourth sealing ring and a fifth sealing ring are arranged on the part of the valve core positioned in the containing cavity, a communicating space is formed among the fourth sealing ring, the fifth sealing ring, the outer wall of the valve core and the wall of the containing cavity, and the suction inlet is communicated with the suction outlet through the communicating space when sucking.

In one or more embodiments of the present invention, the second air flow passage extends in the axial direction and penetrates one end portion of the valve element, a through hole communicating with the second air flow passage is provided at a side portion of the valve element, and the through hole and the suction outlet are both located in the communicating space when not sucking.

In one or more embodiments of the present invention, the medical endoscope further includes a three-way mechanism including:

tee bend spare, supply apparatus male first connector, with second connector and adaptor of head end apparatus passageway intercommunication, first connector with a connector of tee bend spare is connected, the second connector passes through the adaptor with any one among the all the other connectors of tee bend spare is connected, just form a first accommodation space that is used for filling glue between the outer wall of adaptor and the inner wall of connector, the outer wall of second connector with form the second accommodation space that is used for filling glue between the inner wall of adaptor.

Compared with the prior art, the medical endoscope according to the embodiment of the invention comprises the following components:

(1) the light source with the special-shaped structure is adopted in the head end seat, so that the internal space of the head end seat can be fully utilized, and the brightness of the light source is improved. Meanwhile, the nozzle and the head end seat are integrally formed in an injection molding mode, so that the installation steps and the part cost can be simplified.

(2) Through setting up the angle control mechanism who has the locking function, can control the flexion of medical endoscope to a plurality of directions are crooked to can make the flexion of medical endoscope keep certain orientation fixed unchangeable through the locking subassembly among the angle control mechanism, be convenient for observe human organ.

(3) Through the drive mode who changes the haulage rope, change the drive of haulage rope into gear and hold-in range cooperation drive by the carousel drive, can avoid with haulage rope direct contact, avoid leading to haulage rope wearing and tearing, improve haulage rope life. Simultaneously, through gear and hold-in range cooperation drive haulage rope removal, also can avoid the extension of haulage rope, improve the bending angle control accuracy of flexion, improve user and use experience.

(4) The water inlet channel, the air inlet channel and the one-way valve are integrated into a whole, and the water inlet channel and the air inlet channel are mutually independent, so that the size of the water-gas control mechanism can be integrally reduced, and the operation convenience is improved. And through set up valve block formula check valve in the runner of giving vent to anger, reduce space occupation when preventing gas, liquid backward flow, reduce cost.

(5) In the three-way mechanism, by arranging the adapter, the internal space of the medical endoscope is limited, and the sealing treatment between the three-way part and the connector can be realized under the condition that a sealing ring cannot be used, so that the sealing performance of the medical endoscope is improved.

Drawings

FIG. 1 is a perspective view of a handle according to the first embodiment;

FIG. 2 is a perspective view of the head end portion of the first embodiment;

FIG. 3 is an exploded view of the head end of FIG. 2;

FIG. 4 is a cross-sectional view of the head end of FIG. 2;

FIG. 5 is a cross-sectional view of the handle of FIG. 1;

FIG. 6 is an exploded view of the angle control mechanism of the first embodiment;

FIG. 7 is an exploded view of the angle control mechanism of the first embodiment;

FIG. 8 is a perspective view of the handle of FIG. 1 with the housing removed;

FIG. 9 is a first cross-sectional view of FIG. 8;

FIG. 10 is an exploded view with parts removed;

FIG. 11 is a cross-sectional view of a water vapor control mechanism;

fig. 12 is a sectional view of the attraction control mechanism;

fig. 13 is an enlarged schematic view of a portion a of fig. 5.

Detailed Description

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

The medical endoscope disclosed by the invention can fully utilize the limited head end space and improve the brightness of the light source. Meanwhile, the bending part of the medical endoscope can be controlled to bend towards a plurality of directions, and the bending part can be kept fixed in one direction.

Referring to fig. 1 to 13, a medical endoscope according to the present invention includes an insertion portion and a handle 10. Wherein the insertion portion includes a connection portion, a bending portion and a head end portion 20, one end of the connection portion is connected to the handle 10, and the opposite end is connected to the head end portion 20 through the bending portion, that is, the bending portion is connected between the connection portion and the head end portion 20. The bending part can be bent at a certain angle under the control of the handle 10 to drive the head part 20 to move to a position required by human organs, and comprises a snake bone and a protective tube sleeved outside the snake bone; the tip portion 20 may be used to acquire images of a desired location of a body organ.

Specifically, as shown in fig. 2 to 4, the head part 20 includes a head base 21, a nozzle 22, a camera module 23, and a light source 24. Wherein, the head end seat 21 is provided with an instrument channel 211, and the instrument channel 211 can be used for the passage of instruments during the operation process or for the discharge of blood or body fluid; the nozzle 22 is mounted on the head end seat 21 and is used for spraying air or spraying water to the camera module 23, taking the medical endoscope as a gastroscope as an example, the purpose of spraying water is to clean the camera module 23 so as to avoid the liquid in the alimentary tract from blurring the camera module 23, and the purpose of spraying air is to prop the stomach open so as to facilitate the camera module 23 to observe various positions of the gastric mucosa; the camera module 23 is assembled on the head end seat 21 and is used for shooting images of various positions of human organs; the light source 24 is mounted on the head end base 21 and is used for providing illumination so that the camera module 23 can clearly shoot images of various positions of the human body organ.

In this embodiment, the nozzle 22 and the head mount 21 are integrally injection molded, so that the installation steps and the parts cost can be simplified.

As shown in fig. 3, in order to fully utilize the space of the head holder 21 to improve the brightness of the light source 24, the light source 24 is a special-shaped light source, that is, the light source 24 includes a special-shaped circuit board 241 and a light emitting element 242 disposed on the special-shaped circuit board 241, the light emitting element 242 is used for generating light with a certain wavelength, and the special-shaped circuit board 241 can control whether the light emitting element 242 emits light. In practice, the special-shaped circuit board 241 has a conductive trace for connecting the external power source and the light emitting element 242, and the conductive trace can transmit power, so that the special-shaped circuit board 241 controls the light emitting element 242 to emit light.

In this embodiment, the special-shaped circuit board 241 includes a first bearing portion 241a, a connecting portion 241b and a second bearing portion 241 c. The engaging portion 241b has one end connected to the first receiving portion 241a and the opposite end connected to the second receiving portion 241c, wherein the first receiving portion 241a is used for assembling the light emitting member 242, and the second receiving portion 241c is also used for assembling the light emitting member 242. In this embodiment, the area of the cross section of the first receiving portion 241a gradually increases from the end of the connecting portion 241b to the end away from the connecting portion 241 b. Similarly, the area of the cross section of the second receiving portion 241c gradually increases from the end of the connecting portion 241b to the end away from the connecting portion 241 b. By adopting the special-shaped circuit board 241, the limited space of the head end seat 21 can be fully utilized, and the brightness of the light source 24 is improved.

In this embodiment, the light emitting member 242 is a special-shaped light emitting member 242. The limited head mount 21 space is also utilized by using the shaped glowing member 242 to increase the brightness of the light source 24. The special-shaped light emitting member 242 is a special-shaped LED, but in other embodiments, a plurality of LEDs may be arranged in a fan shape, and may be selected according to actual requirements.

As shown in fig. 3 and 4, the head end mechanism further includes a front coupling ring 25, and the front coupling ring 25 is used for coupling the head end seat 21 and the snake bone in the bending portion, that is, the head end seat 21 is coupled to the snake bone through the front coupling ring 25. In practice, the head base 21 is provided with a limiting groove, and the front joint ring 25 is provided with a limiting protrusion matched with the limiting groove. Through spacing groove and spacing bellied cooperation, the assembly of head end seat 21 and preceding adapter ring 25 of being convenient for on the one hand, on the other hand also can prevent that head end seat 21 from rotating for preceding adapter ring 25 relatively, improves the stability of connecting between them.

Further, the head end base 21 mechanism further includes an outer protecting tube 26, which plays a protection role and is sleeved outside the front connecting ring 25 and at least a part of the head end base 21.

Referring to fig. 1, 5 to 10, the handle 10 includes a handle housing 11 and an angle control mechanism 12 mounted on the handle housing 11, and the angle control mechanism 12 is used for controlling a bending angle of the bending portion. The angle control mechanism 12 includes a shaft assembly 121, a first rotating member, a second rotating member, here a first gear 122, a second rotating member, here a second gear 123, a first dial 126, a second dial 127, a first locking assembly 128 and a second locking assembly 129. When the first rotating member is the first gear 122 and the second rotating member is the second gear 123, the angle control mechanism 12 further includes a first timing belt 124 and a second timing belt 125. Wherein:

the shaft assembly 121 includes a central shaft 121a, a first bushing 121b, and a second bushing 121 c. The center shaft 121a has one end fixed to the inside of the handle case 11 by a bolt or a nut, and an opposite end extending out of the handle case 11 toward the outside of the handle case 11. In this embodiment, the central shaft 121a is made of a metal material, and has an advantage of high strength. And in order to prevent the center shaft 121a from rotating along its axis, the center shaft 121a is also fitted to the handle housing 11 by polygonal fixing members while being fixed to the handle housing 11 by bolts or nuts. Further, in the shaft assembly 121, the first sleeve 121b is in point contact with the central shaft 121a, and the second sleeve 121c is in point contact with the first sleeve 121 b. Since the first sleeve 121b and the center shaft 121a or the second sleeve 121c and the first sleeve 121b are in surface contact with each other, abrasion is easily generated and resistance is large during actual operation. And the surface contact is changed into point contact, so that the friction and the loss can be reduced. In this embodiment, the outer wall of the central shaft 121a protrudes in the radial direction to form a first protrusion, through which the central shaft 121a contacts with the inner wall of the first sleeve 121 b; the inner wall of the second sleeve 121c protrudes in the radial direction to form a second protrusion, through which the second sleeve 121c contacts the outer wall of the first sleeve 121 b. Of course, in other embodiments, a first convex point may be formed on the inner wall of the first sleeve 121b in a protruding manner along the radial direction to achieve the contact between the first sleeve 121b and the central shaft 121 a; the outer wall of the first hub 121b is protruded in the radial direction to form a second protrusion to achieve contact between the second hub 121c and the first hub 121 b.

The first sleeve 121b is sleeved outside the central shaft 121a and can rotate along the axial direction relative to the central shaft 121 a; the second shaft sleeve 121c is sleeved outside the first shaft sleeve 121b and can rotate in the axial direction relative to the first shaft sleeve 121 b.

The first gear 122 is located in the handle housing 11 and sleeved outside the central shaft 121a, and is connected to the end of the first sleeve 121b located in the handle housing 11. The second gear 123 is located in the handle housing 11 and sleeved outside the first shaft sleeve 121b, and located above the first gear 122, and is connected to an end of the second shaft sleeve 121c located in the handle housing 11. In this embodiment, the first gear 122 and the first sleeve 121b are integrally formed, and the second gear 123 and the second sleeve 121c are integrally formed, so that the assembly of parts can be reduced, and the assembly efficiency can be improved.

The first timing belt 124 is located in the handle housing 11, is disposed around the first gear 122, and is engaged with the first gear 122. The first timing belt 124 is a non-closed structure (i.e., a non-loop structure), and both ends thereof are connected to the bending portion of the medical endoscope through the pulling string 120, respectively. In practice, the first gear 122 rotates to drive the first synchronous belt 124 to move, the first synchronous belt 124 further drives the pulling rope 120 to move, and the bending portion can be controlled by the pulling rope 120 to bend towards the first direction or the opposite direction of the first direction. A second timing belt 125 is provided in the handle housing 11, which is disposed around the second gear 123 and engages with the second gear 123. The second timing belt 125 is also a non-closed structure (i.e., a non-annular structure), and both ends thereof are connected to the bending portion via the pulling rope 120. In practice, the second gear 123 drives the second timing belt 125 to move when rotating, the second timing belt 125 further drives the pulling rope 120 to move, and the bending portion can be controlled by the pulling rope 120 to bend in the second direction or the direction opposite to the second direction. The first direction and the second direction may be perpendicular or approximately perpendicular. Through the cooperation that adopts gear and hold-in range to drive haulage rope 120 and remove, can avoid leading to haulage rope 120 wearing and tearing, improve haulage rope 120 life. Meanwhile, the traction rope 120 is driven to move through the cooperation of the gear and the synchronous belt, the extension of the traction rope 120 can be avoided, the bending angle precision of the bending part is improved, and the use experience of a user is improved.

The first dial 126 is located outside the handle housing 11 and sleeved outside the central shaft 121a, and is connected to an end of the first sleeve 121b located outside the handle housing 11, and is used for controlling the first gear 122 to rotate through the first sleeve 121b, that is, the first gear 122 and the first dial 126 rotate synchronously. The second dial 127 is located outside the handle housing 11 and sleeved outside the first sleeve 121b, and is connected to an end of the second sleeve 121c located outside the handle housing 11, and is used for controlling the second gear 123 to rotate through the second sleeve 121c, that is, the second dial 127 and the second gear 123 rotate synchronously. In this embodiment, the second gear 123 is located above the first gear 122, and there is a certain contact between the two. In order to reduce the friction loss between the two, a PTFE sheet is arranged between the two.

The first lock member 128 is used to control the locking of the first dial 126, i.e., the first dial 126 cannot rotate under the action of the first lock member 128. The first locking assembly 128 includes a rotating member 128a, a first locking plate 128b and a second locking plate 128c, the first locking plate 128b is assembled on the central shaft 121a through a nut, the second locking plate 128c is assembled on the central shaft 121a, the second locking plate 128c is arranged between the first locking plate 128b and the first dial 126, the second locking plate 128c contacts the first dial 126, and the rotating member 128a is connected with the first locking plate 128b to drive the first locking plate 128b to rotate, i.e. the rotating member 128a rotates synchronously with the first locking plate 128 b. The friction between the second lock disk 128c and the first dial 126 is gradually increased as the first lock disk 128b rotates in the preset direction, in this embodiment, a sealing member (not shown) is provided between the second lock disk 128c and the first dial 126, and during the downward movement of the second lock disk 128c, the sealing member is pressed to increase the friction between the sealing member and the first dial 126, so that the friction between the second lock disk 128c and the first dial 126 is gradually increased as the first lock disk 128b rotates in the preset direction. In implementation, the first locking disc 128b is driven to rotate during the rotation of the rotating member 128a, and the second locking disc 128c is driven to continuously move towards the first dial 126 during the rotation of the first locking disc 128b, so that the friction force between the first locking disc and the first dial 126 is increased along with the rotation of the first locking disc 128b along the preset direction, and finally the first dial 126 cannot rotate, thereby realizing the locking of the first dial 126.

The second lock assembly 129 is used to control the locking of the second lock member 127, i.e., the second lock member 127 cannot rotate under the action of the second lock assembly 129. The second locking assembly 129 includes a lifting rod 129a and a lifting piece 129b, the lifting piece 129b and the lifting rod 129a are both sleeved outside the second shaft sleeve 121c, the lifting piece 129b is located between the second dial 127 and the lifting rod 129a, and the friction force between the lifting piece 129b and the second dial 127 is gradually increased as the lifting rod 129a rotates in the preset direction. In practice, the driving rod 129a moves along a predetermined direction, and the driving rod 129a further drives the lifting member 129b to move continuously towards the second dial 127 and press against the second dial 127. When the shift lever 129a is rotated to the home position, the friction between the lifting member 129b and the second dial 127 is maximized, and the second dial 127 cannot be rotated, thereby locking the second dial 127.

As shown in fig. 6 to 7, the first locking plate 128b drives the second locking plate 128c to move toward the first dial 126 during rotation. The end surface of the first locking disk 128b facing the second locking disk 128c is provided with a first guide portion a, the end surface of the second locking disk 128c facing the first locking disk 128b is provided with a second guide portion b, and the first guide portion a and the second guide portion b are matched to drive the second locking disk 128c to move towards the first dial 126 in the rotating process of the first locking disk 128 b. In this embodiment, the first guide portion a is a guide inclined surface, and the second guide portion b is a guide protrusion, or the first guide portion a is a guide protrusion, and the second guide portion b is a guide inclined surface, and can be set according to actual requirements.

Further, in order to realize the synchronous rotation of the rotating member 128a and the first locking disk 128b, at least one first limiting portion c is disposed in the rotating member 128a, and a second limiting portion d matched with the first limiting portion c is disposed on the first locking disk 128 b. In this embodiment, the first position-limiting portion c is a position-limiting groove formed in the rotating member 128a, and the second position-limiting portion d is a position-limiting protrusion formed on the first locking plate 128b, and the position-limiting protrusion can be assembled into the position-limiting groove.

As shown in fig. 6 to 7, in order to realize that the lifting piece 129b continuously moves toward the second dial 127 during the rotation of the shift lever 129a, the shift lever 129a is provided with a third guide portion e, and the lifting piece 129b is provided with a fourth guide portion f. Under the cooperation of the third guide portion e and the fourth guide portion f, the lifting piece 129b can be continuously moved toward the second dial 127 along with the rotation of the shift lever 129a, so as to increase the friction force therebetween. In this embodiment, the third guiding portion e is a guiding protrusion formed on the shift lever 129a, and the fourth guiding portion f is a guiding inclined surface formed on the lifting member 129b, but in other embodiments, the third guiding portion e is a guiding inclined surface formed on the shift lever 129a, and the fourth guiding portion f is a guiding protrusion formed on the lifting member 129b, which can be selected according to actual requirements.

Further, in order to make the lifting piece 129b quickly resettable, or facilitate resetting thereof, and to increase the frictional force between the lifting piece 129b and the second dial 127, a first elastic member g is provided between the lifting piece 129b and the second dial 127. The first elastic member g includes, but is not limited to, a spring, and a rubber ring.

As shown in fig. 6 to 7, in order to make the lifting piece 129b only move in the axial direction and not rotate, the handle case 11 of the medical endoscope is provided with a fifth guide portion h, and the lifting piece 129b is provided with a sixth guide portion i engaged with the fifth guide portion h. With the cooperation of the fifth guide portion h and the sixth guide portion i, it is achieved that the lifting piece 129b can move only in the axial direction thereof without rotating. Here, the fifth guide portion h is a guide projection formed on the handle case 11, and the sixth guide portion i is a guide groove formed on the lift 129 b.

Further, in order to limit the rotation angle of the shift lever 129a, a third limiting portion j is disposed on the shift lever 129a, and a fourth limiting portion k is disposed on the handle housing 11 and matches with the third limiting portion j. In this embodiment, the third position-limiting portion j is a protrusion formed on the shift lever 129a, and the fourth position-limiting portion k is a track groove formed on the handle housing 11. When the rotating mechanism is in use, the protruding part on the shifting rod 129a is inserted into the track groove of the handle shell 11, the limiting protruding part can be abutted against the groove wall of the track groove after the shifting rod 129a rotates to the right position, the shifting rod 129a cannot rotate continuously, and the rotation angle of the shifting rod 129a is further limited.

As shown in fig. 8 to 10, the angle control mechanism 12 further includes a separating member M for separating the pulling ropes 120 from each other. The separating member M is provided with a plurality of separating passages M1 for the pulling rope 120 to pass through. In practice, one end of each pulling rope 120 passes through the corresponding separation channel M1 and then is connected to the corresponding synchronous belt, the opposite end is connected to the bending portion, the pulling rope 120 is connected to the bending portion through the outer protecting tube 26 disposed in the handle housing 11 (i.e., the pulling rope 120 passes through the corresponding protecting tube P and then is connected to the bending portion), and the outer protecting tube 26 can avoid the abrasion of the pulling rope 120 caused by each channel and cable. The separation member M prevents the traction ropes 120 from being entangled or knotted. In this embodiment, the medical endoscope is provided with four pulling ropes 120, so that the separating member M is correspondingly provided with four separating channels M1, and each pulling rope 120 correspondingly passes through one separating channel M1.

Furthermore, a cover body N for covering the separation channel M1 is arranged on the separation piece M, and the cover body N is inserted on the separation piece M. By providing the cover N, the hauling cable 120 can be restrained in the corresponding separation channel M1. Meanwhile, the assembly is realized in an inserting mode, and the assembly efficiency can be improved.

As shown in fig. 9 to 10, in order to facilitate the assembly of the pulling rope 120 and the adjustment of the tension of the pulling rope 120, each pulling rope 120 is connected to a corresponding timing belt through a first adjusting member L. The first adjusting piece L comprises an adjusting body L1 and a plug connector L2, a plurality of plug-in grooves L3 are arranged on the adjusting body L1 at intervals, and the plug connector L2 can be plugged into the plug-in groove L3. In operation, the adjusting body L1 is connected with the synchronous belt, and the plug connector L2 is connected with the pulling rope 120. When the tension of the pulling rope 120 is adjusted, the plug connector L2 can be plugged into the corresponding plugging groove L3 to change the distance between the end of the pulling rope 120 and the synchronous belt, so as to adjust the tension.

Referring to fig. 1 and 11, the handle 10 further includes a water control mechanism 13, the water control mechanism 13 can be used to control the nozzle 22 at the head 20 to spray gas or liquid, the water control mechanism 13 integrates the water inlet and the air inlet into a whole and makes them independent from each other, and can effectively prevent the backflow of gas. Specifically, the water vapor control mechanism 13 includes a first housing 131, a second housing 132, and an operation member 133. The first housing 131 has a receiving cavity 131a extending along an axial direction, and the first housing 131 is provided with an air inlet 131b, a water inlet 131c and a receiving portion 131d formed by a protrusion extending from a side portion to an outside, wherein the air inlet 131b and the water inlet 131c are both communicated with the receiving cavity 131a, and the receiving portion 131d is provided with an air outlet channel 131e and a water outlet channel 131f communicating with the receiving cavity 131a, the air outlet channel 131e can be communicated with the air inlet 131b through the receiving cavity 131a, and the water outlet channel 131f can be communicated with the water inlet 131c through the receiving cavity 131 a. That is, the gas entering from the gas inlet 131b further flows out of the housing chamber 131a through the gas outlet channel 131e after entering the housing chamber 131 a; the liquid introduced from the water inlet 131c further flows out of the housing chamber 131a through the water outlet passage 131f after entering the housing chamber 131 a.

Further, the second housing 132 is detachably connected to the receiving portion 131d, such as by a screw connection, and also such as by a snap connection. The second casing 132 is provided with a water vapor outlet 132a communicated with the air outlet channel 131e and the water outlet channel 131 f. In this embodiment, a sealing ring is disposed at the joint of the first casing 131 and the second casing 132, so as to prevent water leakage and air leakage at the joint.

Further, in order to prevent the gas from flowing back, a check valve 134 is disposed in the gas outlet channel 131e, and the check valve 134 allows the gas to flow only from the gas inlet 131b to the water vapor outlet 132a, but does not allow the gas entering from the water vapor outlet 132a to flow to the gas inlet 131 b. In this embodiment, the check valve 134 includes a valve body 134a and a valve plate 134b outside the valve body 134 a. Valve body 134a is preferably formed integrally with second housing 132 and is fitted into outlet flow passage 131e as second housing 132 is assembled. By adopting the valve plate 134b type one-way valve 134, the cost can be effectively saved.

As shown in fig. 11, the operating member 133 has a first air flow passage 133a extending in the axial direction and penetrating both end portions thereof. The first air flow path 133a may be used to control whether the gas entering from the gas inlet 131b may flow out from the moisture outlet 132 a. The operation member 133 also controls the water inlet 131c to communicate with the water outlet flow passage 131f when water is supplied. Specifically, the operating element 133 includes an operating shaft 133b, and a first seal ring 133c, a second seal ring 133d, and a third seal ring 133e that are fitted around the outside of the operating shaft 133 b. The first seal ring 133c, the second seal ring 133d, and the third seal ring 133e are provided in this order in the axial direction. The water inlet 131c is located between the second sealing ring 133d and the third sealing ring 133e during air intake, the water outlet channel 131f is located between the first sealing ring 133c and the second sealing ring 133d, the water inlet 131c is located between the first sealing ring 133c and the second sealing ring 133d during water intake, and the air outlet channel 131e is located between the second sealing ring 133d and the third sealing ring 133 e.

In practice, the first air flow path 133a of the operation shaft 133b is closed by hand and is not pressed down during air intake. At this time, the air intake pump is opened, and since the first air flow channel 133a is blocked, the air in the accommodating cavity 131a reaches a pressure threshold, and further breaks the valve plate 134b of the check valve 134, and the air is further discharged from the air outlet channel 131e to the outside through the water vapor outlet 132 a.

When water is supplied, the operation shaft 133b is pressed downward, the water inlet 131c is positioned between the first seal ring 133c and the second seal ring 133d, the water outlet channel 131f is positioned between the first seal ring 133c and the second seal ring 133d, and the air outlet channel 131e is positioned between the second seal ring 133d and the third seal ring 133 e. Since the water inlet 131c and the water outlet channel 131f are both located between the first sealing ring 133c and the second sealing ring 133d, they can be communicated with each other. Water may enter through the water inlet 131c and be discharged through the water vapor outlet 132 a. At this time, the air outlet channel 131e is located between the second sealing ring 133d and the third sealing ring 133e, and cannot be communicated with the air inlet 131b, so that air outlet cannot be realized, and mutual independence of water and air channels is realized.

In this embodiment, the second seal ring 133d and the third seal ring 133e are integrally formed, which can improve the assembling efficiency.

As shown in fig. 11, in order to make the operating shaft 133b return to the original position after being pressed down, the water gas control device further includes a reset member 135, the operating shaft 133b is provided with a first abutting portion, the first housing 131 is provided with a second abutting portion, one end of the reset member 135 abuts against the first abutting portion, and the opposite end abuts against the second abutting portion. In this embodiment, the reset element 135 is a spring, which is sleeved outside the operating shaft 133b and the first housing 131, and has one end abutting against the first abutting portion and the opposite end abutting against the second abutting portion. Of course, in other embodiments, the reset element 135 may be an elastic sheet, which may be selected according to actual requirements.

As shown in fig. 12, the handle 10 further includes a suction control mechanism 14, which facilitates the suction operation performed by the user to discharge the liquid from the body organ. Specifically, the suction control mechanism 14 includes a control valve 141, and the control valve 141 is used for a user to control whether the medical endoscope performs a suction operation. The control valve 141 includes a valve seat 141a and a valve body 141 b. The valve seat 141a is provided with a receiving cavity 141c extending along the axial direction thereof, the receiving cavity 141c is used for assembling the valve core 141b, the valve seat 141a is further provided with a suction inlet 141d and a suction outlet 141e, the suction inlet 141d and the suction outlet 141e are both communicated with the receiving cavity 141c, the suction inlet 141d is used for allowing liquid and/or gas to be sucked to enter the receiving cavity 141c, and the suction outlet 141e is used for discharging the liquid and/or gas in the receiving cavity 141c from the receiving cavity 141 c; the valve core 141b is movably fitted in the accommodation chamber 141c, and has a second air flow passage 141f extending in the axial direction thereof, the second air flow passage 141f communicating the suction outlet 141e with the outside air when not sucked.

Further, a fourth sealing ring 141g and a fifth sealing ring 141h are sleeved on a portion of the valve core 141b located in the accommodating chamber 141c, and a communication space 141i is formed between the fourth sealing ring 141g and the fifth sealing ring 141h and the outer wall of the valve core 141b and the wall of the accommodating chamber 141 c. When the suction operation is performed, both the suction inlet 141d and the suction outlet 141e communicate with the communication space 141i, that is, the suction inlet 141d and the suction outlet 141e communicate through the communication space 141i when the suction operation is performed. In practice, when the suction operation is performed, the liquid and/or gas introduced from the suction inlet 141d enters the communicating space 141i, and the liquid and/or gas in the communicating space 141i is discharged from the suction outlet 141e, thereby performing the suction operation.

As shown in fig. 12, in order to realize that the second air flow passage 141f can discharge the outside air from the suction outlet port 141e when the suction operation is not performed, the second air flow passage 141f on the spool 141b extends in the axial direction and penetrates one end portion thereof, and the side portion of the spool 141b is provided with a through hole 141j communicating with the second air flow passage 141 f. When the suction operation is not performed, the suction inlet 141d is located outside the communication space 141i, and the suction outlet 141e and the through hole 141j are both located inside the communication space 141i, so that the external air can enter the communication space 141i through the second air flow passage 141f, and the air of the communication space 141i can be discharged to the outside through the suction outlet 141 e. When the suction operation is performed, the user blocks the second air flow path 141f and presses the valve body 141b, the valve body 141b moves toward the inside of the housing chamber 141c, and after the valve body 141b moves to the proper position, the suction inlet port 141d and the suction outlet port 141e are both located in the communication space 141i, and the suction inlet port 141d and the suction outlet port 141e are communicated with each other, thereby achieving suction.

As shown in fig. 12, the control valve 141 further includes a second elastic member 141k in order to allow the valve body 141b to be reset after being pressed. The valve core 141b is provided with a first resisting part for resisting the second elastic member 141k, wherein the first resisting part can be a resisting convex ring formed by outward protrusion of the outer wall of the valve core 141 b; the valve seat 141a is provided with a second abutting portion for abutting against the second elastic member 141k, where the second abutting portion may be an abutting plane formed by a top end surface of the valve seat 141 a. The second elastic member 141k is located between the first abutting portion and the second abutting portion, and one end of the second elastic member 141k abuts against the first abutting portion, and the opposite end abuts against the second abutting portion. In practice, when the user presses the valve core 141b, the second elastic member 141k is compressed. When the user releases the valve core 141b, the second elastic member 141k generates a restoring force, which acts on the valve core 141b, so that the valve core 141b is restored. In this embodiment, the second elastic element 141k may be a spring or a spring, and may be selected according to actual requirements.

Referring to fig. 5 and 13, the handle 10 further includes a tee mechanism 15, which can realize a sealed connection between the tee 151 and a connector communicating with the instrument channel 211 of the head 20 of the medical endoscope in a space-limited condition. Specifically, the three-way mechanism 15 includes a three-way member 151, a first connection head 152, a second connection head 153, and an adaptor 154. The three-way element 151 is provided with a first connecting port, a second connecting port and a third connecting port, wherein the three-way element 151 is optimal in selecting a clamp channel three-way; a first connector 152 is sealingly connected to a first connector of the tee 151, the first connector 152 being adapted for insertion of an instrument, the first connector 152 being preferably a luer connector; the second connector 153 is connected with a second connector of the three-way part 151 through the adaptor 154, a first accommodating space 155 is formed between the outer wall of the adaptor 154 and the inner wall of the second connector, a second accommodating space 156 is formed between the outer wall of the second connector 153 and the inner wall of the adaptor 154, both the first accommodating space 155 and the second accommodating space 156 are used for filling glue, so as to realize sealing between the adaptor 154 and the three-way part 151, and between the adaptor 154 and the second connector 153, wherein the second connector 153 is the best to select a metal adapter; the third connection port communicates with the suction control mechanism 14, and the suction control mechanism 14 controls the suction pump to discharge the liquid at a desired position to the outside through the three-way mechanism 15.

In this embodiment, at least a portion of the adaptor 154 may be assembled in the second connection port by a screw thread or an insertion manner, and the first accommodation space 155 is formed therebetween; the second connector 153 is at least partially assembled in the adaptor 154 by a screw thread or a plug-in manner, and the second receiving space 156 is formed therebetween. By arranging the adapter 154, the internal space of the medical endoscope is limited, and the sealing treatment between the tee 151 and the connector can be realized under the condition that a sealing ring cannot be used, so that the sealing performance of the medical endoscope is improved.

Further, to achieve the sealing between the first connection head 152 and the first connection port, a sealing member, preferably a rubber ring, is disposed between the outer wall of the first connection head 152 and the inner wall of the first connection port. Of course, in other embodiments, a sealing glue may be filled between the outer wall of the first connector 152 and the inner wall of the first connector to form the sealing member.

According to the medical endoscope disclosed by the invention, the light source with the special-shaped structure is adopted in the head end seat, so that the internal space of the head end seat can be fully utilized, and the brightness of the light source is improved. Meanwhile, the nozzle and the head end seat are integrally formed in an injection molding mode, so that the installation steps and the part cost can be simplified.

In addition, the invention can control the bending part of the medical endoscope to bend towards a plurality of directions by arranging the angle control mechanism with the locking function, and can keep the bending part of the medical endoscope fixed in a certain direction by arranging the locking assembly, thereby being convenient for observing human organs.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. A medical endoscope, comprising:

2. The medical endoscope as claimed in claim 1, wherein said special-shaped circuit board comprises a first bearing portion for bearing said luminous element, a connecting portion and a second bearing portion for bearing said luminous element, one end of said connecting portion is connected with said first bearing portion, the opposite end is connected with said second bearing portion, and the cross section area of said first bearing portion and said second bearing portion gradually increases from the end of said connecting portion to the direction away from the end.

3. The medical endoscope as claimed in claim 1, wherein the first rotating member is a first rotating gear, and when the second rotating member is a second rotating gear, the angle control mechanism further comprises a first timing belt and a second timing belt, the first timing belt is engaged with the first rotating gear and disposed around the first rotating gear, both ends of the first timing belt are respectively connected to the bending portion through a pulling rope, the second timing belt is engaged with the second rotating gear and disposed around the second rotating gear, and both ends of the second timing belt are respectively connected to the bending portion through a pulling rope.

4. The medical endoscope as defined in claim 3, wherein each pulling rope is connected to the corresponding synchronous belt through a first adjusting member, the first adjusting member includes an adjusting body and a plug-in unit, the adjusting body is provided with a plurality of insertion grooves arranged at intervals, and the plug-in unit is inserted into the insertion grooves.

5. The medical endoscope of claim 1 wherein said central shaft is in point contact with said first hub and said second hub is in point contact with said first hub.

6. The medical endoscope of claim 1, wherein the angle control mechanism further comprises a separating member for separating the respective pulling cords from each other, the separating member being provided with a plurality of separating passages through which the pulling cords pass.

7. The medical endoscope as set forth in claim 1, wherein said first lock assembly includes a rotary member, a first lock plate and a second lock plate, said first lock plate and said second lock plate being fitted on said central shaft, said second lock plate being disposed between said first lock plate and said first drive plate, said rotary member being connected to said first lock plate and rotating synchronously, and a frictional force between said second lock plate and said first drive plate being gradually increased as said first lock plate is rotated in a predetermined direction.

8. The medical endoscope as set forth in claim 1, wherein the second locking assembly includes a lifting member and a lever both disposed outside the second sleeve, the lifting member is disposed between the second dial and the lever, and a friction between the lifting member and the second dial is gradually increased as the lever rotates in a predetermined direction.

9. The medical endoscope of claim 8, wherein a first resilient member is disposed between the lifting member and the second dial.

10. The medical endoscope of claim 1 further comprising a water gas control mechanism, said water gas control mechanism comprising:

11. The medical endoscope of claim 1 further comprising a suction mechanism, said suction mechanism comprising:

12. The medical endoscope as set forth in claim 11, wherein the second air flow channel extends in the axial direction and penetrates one end portion of the valve core, a through hole communicating with the second air flow channel is provided at a side portion of the valve core, and both the through hole and the suction outlet are located in the communicating space when not sucking.

13. The medical endoscope of claim 1 further comprising a tee mechanism, said tee mechanism comprising:

tee bend spare, supply apparatus male first connector, with second connector and adaptor of nose tip apparatus passageway intercommunication, first connector with a connector connection of tee bend spare, the second connector passes through the adaptor with arbitrary one among the all the other connectors of tee bend spare is connected, just form a first accommodation space that is used for filling glue between the outer wall of adaptor and the inner wall of connector, the outer wall of second connector with form the second accommodation space that is used for filling glue between the inner wall of adaptor.