CN107088043A - A kind of Dispoable medical endoscope - Google Patents

Abstract

A disposable medical endoscope includes a bending part, a connecting part, and a handwheel control part. The bending part includes a proximal joint, an articulation ring set, and a distal joint. The handwheel control part includes a first handwheel assembly, a second handwheel A wheel assembly, a winding assembly for driving the bending assembly, one end of the first control cable is wound on the first control wheel, the other end is connected to the bending part, and one end of the second control cable is wound on the first control wheel Two control wheels, the other end of which is connected with the bending part, the first hand wheel assembly controls the movement of the first control wheel, and the second hand wheel assembly controls the movement of the second control wheel. A plurality of hinged rings prepared by injection molding are hinged to each other. The hinged rings are designed with an open mounting groove, and the hinge shaft is smoothly installed in the mounting groove through plastic changes, so that the hinged rings are hinged in pairs. The distribution of the two control cables is designed Because of the two control wheels, four directions can be controlled, controlled by the hand wheel control unit, the bending angle is controllable, and the reliability is high.

Description

Disposable medical endoscope

technical field

The invention belongs to the technical field of endoscopes, in particular to a disposable medical endoscope.

Background technique

An endoscope is a commonly used medical instrument and consists of an insertion part, a bending part and a front end arranged at the front end of the operating part, wherein the insertion part, the bending part and the front end are collectively referred to as an insertion tube. It enters the human body through the natural orifice of the human body, or a small incision made by surgery; when in use, the insertion tube of the endoscope is introduced into the pre-examined organ, and the changes in the relevant parts can be directly observed.

Endoscope is a kind of delicate medical equipment. Most of the domestic medical endoscope market is occupied by foreign products. The price ranges from tens of thousands to hundreds of thousands. Complicated and costly disinfection and maintenance are required after each use. There may be cross-infection due to irregular disinfection procedures. The traditional endoscope insertion tube is provided with an air supply/water supply channel, a suction channel and a biopsy channel as well as control cables, signal cables and optical fibers. It is very difficult to thoroughly sterilize the long and thin channel, but because the production cost of the current endoscope is expensive, it must be reused. It is necessary to improve the traditional endoscope to reduce the cost and the risk of cross-infection.

Later, disposable products gradually appeared. Chinese invention patent "501110056640.0" discloses "a purification medical endoscope". There is an endoscope main body, and the endoscope main body is made of medical resin material to enclose the imaging lens assembly, LED light source, optical fiber light guide, power line and signal line together, and various channels are arranged in the endoscope main body.

The above-mentioned technology has the following problems: the whole is made of medical resin or soft material, which has poor rigidity, and cannot directly reach the affected part when used, and the bending angle is small, so the scope of application is narrow. The main body of the endoscope and the soft overall shell of the endoscope still need to be sterilized and sterilized, and have not been truly disposable.

Chinese invention patent "200880017615.8" discloses "an endoscope bending part", which includes a plurality of joint rings (26A, 26B) coaxially arranged side by side with a cylindrical part (28) One of the two adjacent nodal rings (26A, 26B) (26A) has a protruding part (32) integrally provided with the cylindrical part (28) and extending in the radial direction of the cylindrical part (28) , the other nodal ring (26B) in the adjacent two nodal rings (26A, 26B) has a cylindrical part (28) that is integrally provided for the protruding part (32) to be able to use the length axis of the protruding part (32) Each node ring (26A, 26B) has a non-engaged or engaged non-engaged part extending in the cylindrical part (28) to cross the circumferential direction of the cylindrical part (28). Continuum (34).

The bending part of the endoscope disclosed in the above invention patent has a complex structure, high manufacturing difficulty and high production cost, and does not meet the manufacturing requirements of disposable endoscopes.

The manufacture of disposable endoscopes to be solved at present must solve two problems:

1. Cost. Traditional endoscopes cost hundreds of thousands of yuan, and the cost of each component is expensive, so it is impossible to discard them directly;

2. Disinfection of the working channel. At present, there is no relevant technology that can thoroughly disinfect the slender pipeline;

Therefore, in view of the existing problems in the prior art, it is urgent to provide a technique for disposable medical endoscopes with low production cost and reliable performance.

Contents of the invention

The object of the present invention is to avoid the deficiencies in the prior art and provide a low production cost, reliable performance and disposable medical endoscope.

A disposable medical endoscope is provided, comprising an insertion assembly, a connecting portion, and a handwheel control portion, the insertion assembly includes a bending portion, a front end, a working channel and a jacket arranged at the front end of the control portion, the working channel One part is set in the connecting part, and the other part is connected to the front end through the bending part, and the working channel is set as a working channel integrating air intake, water intake, negative pressure suction and biopsy; the jacket covers The bending part and the front end part, the proximal end of the jacket is in sealing connection with the connecting part;

The bending part is provided with a support assembly, and the support assembly includes a proximal joint, a hinged ring set and a distal joint, one end of the distal joint is connected to the front end, and the other end is connected to the upper end of the hinged ring set, and the proximal joint One end is connected to the lower end of the hinged ring group, and the other end is fixedly connected to the jacket,

The handwheel control part includes a first handwheel assembly, a second handwheel assembly, a winding assembly for driving the bending assembly, and the winding assembly includes a first control wheel, a second control wheel, a first control cable and a second control cable, one end of the first control cable is wound around the first control wheel, and the other end is fixedly connected to the distal joint through the connecting part, the hinge ring group, and the second control cable One end is wound around the second control wheel, and the other end is fixedly connected to the distal joint through the connecting part and the hinge ring group in turn. The first hand wheel assembly controls the movement of the first control wheel, and the second hand wheel assembly controls the second control wheel. wheel sport.

Wherein, the articulated ring group includes a plurality of articulated rings, and the plurality of articulated rings are articulated two by two, and one end of the articulated ring is provided with two first articulated ears along the first radial direction, and the first articulated ears are connected with The adjacent hinge rings are hinged, and the other end of the hinge ring is provided with a second hinge ear along the second radial direction, the second hinge ear is hinged with the adjacent hinge ring, and the first radial direction is connected with the second radial direction. The two radial directions are perpendicular to each other.

Wherein, the outer wall of the upper end of the hinge ring is provided with an outer ring groove, and the inner wall of the lower end is provided with an inner ring groove, the first hinge ear is inserted into the inner ring groove of the adjacent hinge ring, and the second hinge ear is sleeved on the corresponding ring groove. The outer ring groove of the adjacent hinge ring.

Wherein, the first hinge ear is provided with a hinge shaft, and the second hinge ear is provided with a mounting groove, and the mounting groove includes a hinge hole and an installation channel for guiding the hinge shaft into the hinge hole, and the installation The entrance of the channel is arranged at the top or side of the hinge ear, and the outlet of the installation channel is arranged at the hinge hole; the outer end of the hinge shaft is provided with a stopper, and the transverse or longitudinal dimension of the stopper is greater than the diameter of the hinge hole; The entrance width of the installation groove is larger than the exit width of the installation groove.

Wherein, the inner wall of the hinge ring is provided with threading holes, and the threading holes are oppositely arranged, and the threading holes of adjacent hinge rings are provided with two threading holes for passing the control cables, and one end of the control cables The control part is connected, and the other end is connected to the distal joint after passing through the threading hole.

Wherein, the connecting part includes a pipe casing, the proximal end of the casing is inserted into the casing, the casing and the casing are sealed and bonded by dissolving glue, and the working channel is provided with an instrument interface, a water inlet interface, an inlet The air interface and the negative pressure suction interface, the water inlet interface, the air intake interface and the negative pressure suction interface are respectively provided with solenoid valves.

Wherein, the front end is provided with a light source camera assembly, a transparent heat shield and a fixing cylinder, and the light source camera assembly is provided with a light source, a camera, and a PCB board, and the light source, the camera head, and the PCB board are fixedly connected to the The fixed cylinder is provided with a working channel hole, and the working channel hole is set corresponding to the outlet of the working channel; the transparent heat shield is arranged in front of the light source, and the transparent heat shield The lower part is connected with the fixed cylinder, and the observation surface of the transparent heat shield is arranged in an arc shape, and the arc-shaped observation surface forms a heat insulating cavity between the transparent heat shield and the light source.

Wherein, the first control wheel and the second control wheel both include a winding ring and a driving disk for fixing the winding ring, and the winding ring is provided with a plurality of holes for winding the control cable of the endoscope. The drive plate of the first control wheel is set in the drive hole connected to the first hand wheel assembly, and the drive plate of the second control wheel is set in the drive hole connected with the second hand wheel assembly.

Wherein, the first handwheel assembly includes a first linkage lever and a first handwheel, one end of the first linkage lever is fixedly connected to the first handwheel, and the other end is drivingly connected to the first control wheel;

The second handwheel assembly includes a second linkage rod and a second handwheel disposed outside the endoscope casing, and the second linkage rod is passed through the first handwheel, the first linkage lever and the second linkage lever. A control wheel, one end of the second linkage rod is fixedly connected to the second hand wheel, and the other end is drivingly connected to the second control wheel.

Wherein, a first locking assembly for locking the first handwheel assembly and a second locking assembly for locking the second handwheel assembly are provided,

The first locking assembly includes a first locking disc, a spring piece and a first locking piece, the first locking piece is connected to the first handwheel, one end of the spring piece is fixed, and a coupling block is provided at the other end, The locking disc is set to drive the coupling block to connect with the locking member, rotate the locking disc forward, and when it is rotated to the locking position, the locking disc drives the coupling block to connect with the locking member, Reversing the locking disk, the locking disk drives the coupling block to disengage from the locking piece;

The second locking assembly includes a second locking piece, a coupling piece, and a second locking disk. One side of the coupling piece is connected to the second locking piece, and a concave position and a high position are set on the other side. The locking The disc is provided with a pressing block, and the pressing block abuts against the concave position or the high position. When the pressing block is in the concave position, the coupling part is separated from the second locking part. When the pressing block is in the high position, The coupling part is coupled with the second locking part.

The beneficial effects of the present invention are as follows:

The bending part, the connecting part and the handwheel control part of the present invention are made of plastic, and the cost is low. Compared with the metal structure in the prior art, the manufacturing cost is lower, and it is easier to realize one-time use.

The bending part of the present invention adopts a plurality of hinged rings prepared by injection molding to be hinged to each other. The hinged rings are designed with an open mounting groove, and the hinged shaft is smoothly installed in the mounting groove through plastic changes, so that the hinged rings are hinged in pairs to form a The supporting component fixes the control cable through the winding wheel. There are two threading holes in the hinged ring. After the adjacent hinged rings are hinged, the threading holes are distributed in cross rows, that is, the threading holes are distributed in four directions, and one end of the control cable Fixed in cybernetics, the control cables are set in cybernetics, that is, one control cable can control two opposite directions, and the two control cables of the present invention are distributed in two control wheels, which can control four directions, After combined control, the articulated ring group of the supporting component can be controlled to deflect at any angle and direction, controlled by the hand wheel control part, the bending angle is controllable, and the reliability is high.

The present invention also adopts the front camera mechanism, utilizes LED light source, camera and PCB board to replace the light guide fiber in the prior art, so that the manufacturing cost of the front end is greatly reduced; the detachable connection mechanism of the connection part can The insertion part, the bending part and the front part of the front end of the connecting part are conveniently removed as a whole, and then discarded; the overall cost of the present invention is low, the bending effect and picture imaging effect are good, and it is suitable for a single patient or a single operation process, and then discarded as a whole. It avoids the high cost of traditional endoscope disinfection, cross-contamination caused by incomplete disinfection, and at the same time, due to the low overall cost, it is suitable for extensive promotion in major hospitals and grassroots hospitals, and improves the detection rate of related diseases.

Description of drawings

Fig. 1 is a structural representation of the present invention

Fig. 2 is a schematic structural view of the bending part of the present invention.

Fig. 3 is a structural schematic diagram of the hinged ring of the present invention;

Fig. 4 is a structural schematic diagram of the threading hole of the hinge ring of the present invention;

Fig. 5 is a structural schematic diagram of an articulated ring according to Embodiment 2 of the present invention;

Fig. 6 is a schematic structural diagram of the hinge ring of Embodiment 3 of the present invention;

Fig. 7 is a schematic structural view of the hinge ring according to Embodiment 4 of the present invention.

Fig. 8 is a schematic structural view of the working pipeline of the present invention.

Fig. 9 is a schematic diagram of the electrical control structure of the working pipeline of the present invention.

Fig. 10 is a schematic structural view of the handwheel control part of the present invention.

Fig. 11 is a schematic structural view of the handwheel of the handwheel control part of the present invention.

Fig. 12 is an exploded view of the handwheel control part of the present invention.

Fig. 13 is a schematic diagram of the locking structure of the handwheel control part of the present invention. ,

Fig. 14 is a structural schematic diagram of another part of the locking structure of the handwheel control part of the present invention.

Fig. 15 is a schematic structural view of the reel of the present invention.

1 - the front end,

11—camera assembly, 12—transparent heat shield, 13—fixed cylinder,

111—light source, 112—camera, 131—working channel hole,

2—bending part, 21—support assembly, 22—control cable,

211 --- near-end joint, 212 ---articulated ring group, 213 ---distal end joint,

2121—the first hinge ear, 2122—hinge shaft, 2123—the second hinge ear, 2124—hinge hole, 2125—inner ring groove, 2126—outer ring groove, 2127—threading hole, 2128— — mounting channel, 2129 — stopper,

3 - coat,

4 - working channel.

5——connection part,

501—shell, 502—working channel, 503—apparatus interface, 504—water inlet interface,

505—intake port, 506—negative pressure suction port, 507—check solenoid valve, 508—

Air intake solenoid valve, 509—waterproof solenoid valve, 510—micro-control switch.

6——Hand wheel control part

62--the first handwheel assembly, 621--the first handwheel, 622--the first linkage lever,

63--the second handwheel assembly, 631--the second handwheel, 632--the second linkage rod, 33--counterbore,

64--Wiring assembly, 41--First control wheel, 42--Second control wheel, 43--Bundle shell, 44--Bundle block, 411-Winding ring, 412--Drive hole, 413 --Drive disk,441--Cable slot

65--the first locking assembly, 51--the locking disc, 52--the inner ring gear, 53--the spring leaf 53, 54--the first bump, 55--the second bump, 56--stop Piece,

66--the second locking assembly, 661--the first end ring gear, 662--coupling, 663--locking wheel, 664--spring, 665-sliding rail, 6621--the second end ring gear,

67--Axis.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Example 1

A disposable medical endoscope, comprising an insertion assembly, a connecting portion 5, and a handwheel control portion 6, as shown in Figures 1 to 7, the insertion assembly includes a bending portion 2 arranged at the front end of the control portion, a front end portion 1. The working channel 4 and the jacket 3, the jacket 3 covers the bending part 2;

The bending part 2 is provided with a support assembly 21, and the support assembly 21 includes a proximal joint 211, a hinged ring set 212 and a distal joint 213, one end of the distal joint 213 is connected to the front end 1, and the other end is connected to the hinged ring set 212, one end of the proximal joint 211 is connected to the hinge ring group 212, and the other end is connected to the endoscope control part,

One end of the working channel 4 is connected to the handwheel control part, and the other end is connected to the front end part 1 through the bending part 2, and the jacket 3 covers the bending part 2 and the front end part 1. In order to integrate the working channel 4 for air supply, water supply, suction and biopsy;

The control cable 22 of the handwheel control part passes through the proximal joint 211 and the hinge ring group 212 in turn, and is connected with the distal joint 213. The control cable 22 is used to control the bending direction of the support assembly 21 and angle;

The end of the power signal cable of the handwheel control part passes through the proximal joint 211 , the hinge ring set 212 , and the distal joint 213 to connect with the front end 1 .

The front end part 1 is provided with a light source camera assembly 11, a transparent heat shield 12 and a fixed cylinder 13, the light source camera assembly 11 and the transparent heat shield 12 are fixed on the fixed cylinder 13, and the light source camera assembly 11 is provided with two The light source 111, the camera 112 and the PCB board, the light source 111, the camera 112 and the PCB board are affixed to the fixed cylinder, the fixed cylinder 13 is connected to the distal joint 213, and the fixed cylinder 13 is provided with a working channel A hole 131 is provided corresponding to the outlet of the working channel 4 .

Described light source 111 is set to LED light source 111, and described camera 112 comprises CMOS sensor and lens, and described lens is fixed on described CMOS sensor, and described CMOS sensor is fixed on described PCB board, and with described PCB board signal connected, the lens is set to an autofocus lens.

The transparent heat shield 12 is arranged in front of the light source 111 , the lower part of the transparent heat shield 12 is connected to the fixed cylinder 13 , and the outside of the lower part of the transparent heat shield 12 is thermally pressed with the jacket 3 Sealed connection, the viewing surface of the transparent heat shield 12 is set in an arc shape, and the arc-shaped viewing surface forms a heat insulating cavity between the transparent heat shield 12 and the light source 111 .

The observation surface of the transparent heat shield 12 is set to be arc-shaped. The arc-shaped observation surface not only expands the range of sight distance, but also can improve the accuracy of the data collected by the lens, and the arc-shaped observation surface field can not scratch the human body, especially some Affected areas that are easily broken. Moreover, the transparent heat shield 12 can also increase the viewing distance. When the transparent heat shield 12 is closely attached to the affected area, the lens can still clearly collect images of the affected area.

The working channel 4 is provided with an air supply/water supply interface, a suction interface and a biopsy interface at the input end of the insertion assembly.

Example 2

The main technical solutions of this embodiment are basically the same as those of Embodiment 1 or Embodiment 2, and the features not explained in this embodiment are explained in Embodiment 1 or Embodiment 2, and will not be repeated here. The difference between this embodiment 1 and embodiment 2 is:

As shown in Fig. 2 and Fig. 3, the articulated ring group 212 includes a plurality of articulated rings 31, and the plurality of articulated rings 31 are hinged in pairs, and all the articulated rings 31 are connected into a complete articulated ring through the connection form of two articulated joints. The upper end of the group 212 hinge ring 31 is provided with two first hinge ears 2121 along the first radial direction, the first hinge ears 2121 are hinged with the adjacent hinge ring 31, and the lower end of the hinge ring 31 is provided with a second hinge ear 2121 along the second radial direction. The hinge ear 2123, the second hinge ear 2123 is hinged to the adjacent hinge ring 31, and the first radial direction is perpendicular to the second radial direction. The hinge ears and the hinge holes are respectively arranged in the horizontal direction and the vertical direction, and the axis line of the hinge shaft 2122 of the same hinge ring 31 and the center line of the hinge 2124 holes are perpendicular to each other, so the two adjacent hinge swing directions are perpendicular to each other, and only through three hinges The ring 31 can form a universal connection to realize the universal bending of the hinged ring set 212 .

By arranging the first hinge ear 2121 and the second hinge ear 2123 so that the connection part protrudes from the hinge ring 31, when the hinge ring group 212 is bent, the adjacent hinge ring 31 has a larger rotation space, and the rotation will not occur before the rotation reaches a predetermined angle. The articulation ring set 212 has a relatively large bending angle for locking or touching, so that the front end 1 can be bent according to a required angle when observing with an endoscope.

Specifically, the upper end of the hinge ring 31 is provided with arc-shaped recesses along the diametrically opposite positions, and the first hinge ear 2121 is formed between the two recesses, and the hinge shaft 2122 is arranged on the outside of the first hinge ear 2121. The relative positions in the diameter direction are provided with arc-shaped recesses, and a second hinge ear 2123 is formed between the two recesses. The second hinge ear 2123 is provided with a hinge hole 2124, and the axis line of the hinge shaft 2122 is perpendicular to the center line of the hinge hole 2124. , when the adjacent hinge rings 31 are hinged, the hinge shaft 2122 is hinged with the hinge hole 2124, and the function of the concave position is to accommodate the rotation of the hinge ring 31, so that the hinge ring 31 has a larger rotation angle, that is, the hinge ring group 212 has a larger bending angle. angle. Part of the endoscope insertion assembly has many hinged single hollow parts in order to obtain a larger rotation space and bending angle. After the hinged ring group 212 is bent, some control cables are tensioned, and some control cables are loose, which may easily lead to loose control. The cables protrude out of the hinge ring set 212, which may easily cause the control cables to be stuck in the hinge ring set 212. While the structure of the present invention has a large bending angle, the hinge ring 31 is tightly connected, and the overall structure is compact and hollow. There are few parts, most of the control cables are surrounded by the hinge ring 31, and the loose control cables are not easy to protrude from the hinge ring 31, which provides a safe and reliable working environment for the control cables.

The outer wall of the upper end of the hinge ring 31 is provided with an outer ring groove 2126, and the inner wall of the lower end is provided with an inner ring groove 2125. The first hinge ear 2121 is inserted into the inner ring groove 2125 of the adjacent hinge ring 31, and the second hinge ear 2123 is sleeved on the adjacent hinge ring 31. The outer ring groove 2126 of the hinge ring 31. By setting the outer ring groove 2126 and the inner ring groove 2125, the adjacent hinge rings 31 maintain the structural consistency, and the maximum diameter of the hinge ring group 212 is equal to the diameter of the hinge ring 31, so as to prevent the side walls of the hinge ring group 212 from forming a protrusion The structure reduces the insertion resistance of the hinged ring group 212 and at the same time alleviates the vomiting reaction of the patient when inserting the endoscope.

In this embodiment, the outer ring groove 2126 and the inner ring groove 2125 can be set upside down, that is, the outer wall of the lower end of the hinged ring 31 is provided with the outer ring groove 2126, the inner wall of the upper end is provided with the inner ring groove 2125, and the first hinge ear 2121 is sleeved on the adjacent Outside the outer ring groove 2125 of the hinge ring 31, the second hinge ear 2123 is inserted into the inner ring groove 2126 of the adjacent hinge ring 31, and the inverted setting has the same technical effect as the above-mentioned non-inverted setting.

Two threading holes 2127 for threading control cables are provided, and two adjacent hinge rings 31 form four threading holes 2127 horizontally and vertically, and the control cables are installed and fixed from four directions. One end of the control cable is connected to the control part, and the other end is connected to the distal joint 213 after passing through the threading hole 2127 .

In this embodiment, the first hinged ear 2121 and the second hinged ear 2123 obviously protrude from the upper end surface and the lower end surface of the hinged ring 31, and the first hinged ear 2121 and the second hinged ear 2123 are respectively hinged with the adjacent hinged ring 31 Finally, a larger rotation space will be reserved, and the adjacent hinge ring 31 has a larger rotation space when rotating around the hinge point, and the endoscope insertion assembly of this embodiment has a larger bending angle and observation range.

The articulation ring of this embodiment is a plastic part, the production speed of the plastic part is fast, and the cost is lower compared with the snake bone structure or the variable pitch spring made of metal, and the plastic part has low recycling cost and strong regeneration ability, and is very suitable for A single-use insertion assembly and a single-use endoscope.

Example 3

The main technical solutions of this embodiment are basically the same as those of Embodiment 1 or Embodiment 2, and the features not explained in this embodiment are explained in Embodiment 1 or Embodiment 2, and will not be repeated here. The difference between this embodiment 1 and embodiment 2 is:

As shown in Figure 4, the difference between this embodiment and Embodiment 2 is that the first hinge ear 2121 is provided with a hinge shaft 2122, and the second hinge ear 2123 is provided with a mounting groove, and the mounting groove includes a hinge hole 2124 and a To guide the hinge shaft 2124 into the installation channel 2128 of the hinge hole 2124, the installation channel 2128 is arranged vertically, and the entrance of the installation channel 2128 is arranged at the top of the second hinge ear 2123. In this embodiment, Since the second hinged ear 2123 is set upside down, its top end is the lowermost end of the second hinged ear 2123 , and the outlet of the installation channel 2128 is set at the lowest point of the hinged hole 2124 . The axis line of the hinge shaft 2122 is perpendicular to the center line of the hinge hole 2124 . Quickly install the hinge ring 31 through the installation passage 2128, and through the guidance of the installation passage 2128, the hinge shaft 2122 passes from the top of the second hinge ear 2123 along the installation passage 2128 and enters the hinge hole 2124 from the exit, so as to avoid deformation of the hinge ring by external force extrusion To make the hinge shaft 2122 fit into the hinge hole 2124, and the installation channel 2128 in this embodiment is the shortest, the channel structure is simple, and the installation speed is fast.

In this embodiment, the width of the entrance of the installation channel 2128 is greater than the width of the exit of the installation channel 2128 . Increasing the width of the entrance makes it easier for the hinge shaft 2122 to enter the installation channel 2128 , and narrows the width of the exit to prevent the hinge shaft 2122 from slipping out of the installation channel 2128 .

The outer end of the hinge shaft 2122 is provided with a stopper 2129, and the transverse or longitudinal dimension of the stopper 2129 is larger than the diameter of the hinge hole 2124. In this embodiment, the stopper 2129 is a circular stopper 2129, and the circular stopper 2129 The diameter of the block 2129 is larger than the diameter of the hinge hole 2124 . The articulation ring 31 is a plastic part, and there is deformation. When the control cable is used to control the insertion assembly to bend, the articulation ring 31 is easily deformed, and there is a possibility that the articulation shaft 2122 is detached from the articulation hole 2124. In this embodiment, the diameter of the stopper 2129 is larger than the articulation hole. The diameter of 2124 limits the hinge shaft 2122 sliding along the centerline of the hinge hole 2124 due to the deformation of the hinge ring 31 , preventing the hinge shaft 2122 from slipping out of the hinge hole 2124 .

Example 4

The main technical solutions of this embodiment are basically the same as those of Embodiment 1 or Embodiment 2, and the features not explained in this embodiment are explained in Embodiment 1 or Embodiment 2, and will not be repeated here. The difference between this embodiment 1 and embodiment 2 is:

As shown in Figure 5, compared with Embodiment 2, the difference of this embodiment is that the installation passage 2128 of this embodiment is arranged obliquely, which is an inclined straight passage, and the entrance of the installation passage 2128 is arranged at the second hinge ear 2123 On the side, the outlet of the installation channel 2128 is set on one side of the line connecting the lowest point and the highest point of the hinge hole 2124, and the inlet and outlet are set on the same side of the line connecting the lowest point and the highest point.

The second hinge ear 2123 includes two hinge ears disposed opposite to each other, and the orientations of the installation channels 2128 of the two hinge ears can be the same or opposite.

In this embodiment, since the exit position of the installation channel 2128 deviates from the highest point and the lowest point, the hinge shaft 2122 is not easy to slip out of the installation channel 2128 no matter whether the insertion assembly is in a bent or straight state.

As shown in Figure 6, the installation passage 2128 of this embodiment is arranged in a hook shape, and the entrance and exit of the installation passage 2128 are set the same. Since the installation passage 2128 is curved, the exit of the installation passage 2128 is formed perpendicular to the wall of the hinged hole 2124. , the opening width is smaller, and it is less likely to slide out from the installation channel 2128 than the inclined straight channel.

Example 5

As shown in Figure 8 and Figure 9, one end of the connecting part 2 is connected to the bending part 2, and the other end is connected to the handwheel control part 6, the connecting part 2 includes a housing 501 and a working channel 4, the working channel A part of 4 is set in the connecting part 2, the other part of the working channel 4 is set in the bending part 2, the proximal end of the outer cover 3 is inserted into the outer shell 501, and the outer cover 3 and the outer shell 501 Sealed and bonded by dissolving glue, the working channel 4 is provided with an instrument interface 503, a water inlet interface 504, an air inlet interface 505 and a negative pressure suction interface 506, and the water inlet interface 504, the air inlet interface 505 and the negative pressure suction interface The suction ports 506 are respectively provided with solenoid valves. The casing 501 and the bending part 2 of the present invention are sealed and bonded by dissolving glue. The casing 3 of the bending part 2 and the casing 501 are both made of Teflon material, which has low production cost and can be discarded as a whole without designing a complicated sealing structure. At the same time, the working channel 4. It is equipped with an instrument interface 503, a water inlet interface 504, an air inlet interface 505 and a negative pressure suction interface 506. The opening and closing are controlled by electromagnetic valves, and the structure is simple and the production cost is low.

The solenoid valve of the water inlet interface 504 is set as a non-return solenoid valve 507; the solenoid valve of the negative pressure suction interface 506 is set as a waterproof solenoid valve 509;

The position setting of the mechanical valve has limitations. The operation button depends on the position of the mechanical valve. The micro switch 510 has no direct position relationship with the solenoid valve. The position of the micro switch 510 is set according to the convenience of operation. Compared with the mechanical control valve, this The invented micro switch 510 is more convenient to operate.

From the perspective of sealing, the operation button of the mechanical control valve has a direct mechanical connection with the valve core. The design precision of the valve core is high, the production cost is high, and there is a problem of poor sealing. The control valve core has low production cost, and the solenoid valve has better sealing performance than the mechanical control valve, which can effectively avoid water and fluid leakage. In addition, whether the solenoid valve is connected by wire or wirelessly, its setting position has more options.

Wherein, as shown in Figure 3, a PCB board, a controller, and a microswitch 510 are provided; the PCB board is electrically connected to the controller, and the controller is electrically connected to the solenoid valve; the microswitch 510 is electrically connected with the PCB board, and inputs the electric signal for controlling the conduction and closing of the solenoid valve to the controller.

Wherein, the micro switch 510 is provided with three, including a water inlet switch, a drain switch and an air intake switch, the water inlet switch is used to control the opening and closing of the electromagnetic valve of the water inlet interface 504; the drain switch is used to control The opening and closing of the negative pressure suction interface 506 , the intake switch is used to control the opening and closing of the intake interface 505 .

The controller receives the control signal input by the micro switch 510, and sends a response signal to the solenoid valve after identification and processing. The check solenoid valve 507, the waterproof solenoid valve 509, and the intake solenoid valve 508 perform conduction and closing actions.

The present invention controls the opening and closing of each interface of the working channel 4 through the opening and closing of the micro switch 510, and the response speed is fast, and the electromagnetic valve can act instantly when receiving the response signal of the controller, and the response speed is fast.

The micro switch 510 is arranged at the proximal end of the housing 501 or at the handwheel control part 6 .

Example 6

The present invention provides that as shown in Figures 10 to 15, the handwheel control part 6 includes a housing 61, a first handwheel assembly 62, a second handwheel assembly 63, a winding assembly 64, a first locking assembly 65, a second Two locking components 66 and the central axis 67, the outer surface of the side wall of the housing 61 is provided with a round platform 611, and the mounting holes penetrating through the side wall of the housing 61 and the round platform 611 are provided, and the second handwheel assembly 63 and the first handwheel assembly 62 pass through Connect with the winding assembly 64 through the mounting hole.

As shown, the wire winding assembly 64 includes a first control wheel 641, a second control wheel 642, and a wire harness shell 643 for guiding the direction in which the control cable is threaded. One end of the wire harness shell 643 is provided for installing the first control wheel 641 and the The circular cavity of the second control wheel 642 is provided with a wire harness block 644 at the other end, and the wire harness block 644 is provided with four wire harness grooves 6441 arranged in the shape of a "field", and the circular cavity is provided with an opening downward, and the wire harness The opening of the upper end of the groove 6441 is set at the opening of the circular cavity. The second control wheel 642 and the first control wheel 641 are arranged coaxially and side by side in the circular cavity of the wire harness housing 643. The two sets of control cables are respectively wound on the The first control wheel 641 and the second control wheel 642, the two ends of a group of control cables pass from the first control wheel 641, and the two ends of the two control cables pass through the second control wheel 642, forming four control lines Cables, the four control cables pass through the winding cover and enter the harness groove 6441 respectively. The harness groove 6441 is used to thread and separate the control cables to avoid mutual interference between the control cables. The control cables pass through all The wire harness groove 6441 is connected with the insertion assembly of the endoscope.

Both the first control wheel and the second control wheel include a wire winding ring 6411 and a driving disc 6413 for fixing the wire winding ring 412, and the wire winding ring 6411 is provided with a plurality of holes for winding the control cables of the endoscope. The drive plate 6413 of the first control wheel is provided with a drive hole 6412 matching the first linkage rod 622, and the drive plate 6413 of the second control wheel 642 is provided with a drive hole 6413 matching the second linkage rod 632. Hole 6412. When winding the control cable, choose an opening at random to start winding the control cable. The control cable passes through the opening into the winding ring, passes through the adjacent opening, and then passes through another adjacent opening. Circulate until the control cable is wound to a suitable position, and through this winding method, the friction between the control cable and the control wheel can be greatly increased to prevent the control cable from slipping.

The first handwheel assembly 62 includes a first linkage lever 622 and a first handwheel 621 arranged outside the endoscope housing 61, one end of the first linkage lever 622 is fixedly connected to the first handwheel 621, The other end is drivingly connected to the first control wheel 641;

The second handwheel assembly 63 includes a second linkage rod 632 and a second handwheel 631 disposed outside the endoscope housing 61, and the second linkage rod 632 passes through the first handwheel 621, the One end of the second linkage rod 632 is fixedly connected to the second hand wheel 631 , and the other end is drivingly connected to the second control wheel 642 .

The first locking assembly 65 includes a spring piece 653, a locking disk 651 and a first locking member. The locking disk 651 is sleeved on the round platform 611. One end of the spring piece 653 is obliquely inserted into the round platform 611 and fixed, and the other end Set up a link block. In this embodiment, the first locking member may be an end ring gear or an inner ring gear 652 , and the coupling block is connected to the end face ring gear or an inner ring gear 652 , and this embodiment takes the inner ring gear 652 as an example for illustration.

The coupling piece of the spring piece 653 is arranged in the inner ring gear 652, and the locking plate 651 is set to drive the coupling piece at the other end of the spring piece 653 to snap into the first bump 654 of the inner gear ring 652, and through the coupling piece and the inner gear Circle 652 joins. When the locking disc 651 is rotated to the coupling position, the first protrusion 654 drives the coupling block to connect with the ring gear 652, and the first handwheel 621 is locked; when the locking disc 651 is turned over, the first protrusion 654 rotates in the opposite direction, and the spring The piece 653 returns to its original position by its own elastic force, and the coupling block is separated from the ring gear 652 .

However, the performance of the spring sheet 653 may decline after repeated use, and the friction force between the spring sheet 653 and the ring gear 652 is too large or other reasons cause the recovery of the elastic force to fail. One end is separated from the second protrusion 655 of the ring gear 652, the first protrusion 654 and the second protrusion 655 are respectively arranged on both sides of the spring piece 653, and the locking disc 651 rotates the first protrusion 654 to drive the spring piece 653 The coupling block snaps into the ring gear 652, the locking disc 651 reverses, the second protrusion 655 drives the other end of the spring leaf 653 to disengage from the ring gear 652, and the other end of the spring leaf 653 is driven to disengage from the ring gear 652 by external force.

The round table 611 is provided with a stopper 656 for limiting the rotation angle of the locking disc 651. The stopper 656 is arranged at the position where the first protrusion 654 drives the spring piece 653 to snap into the ring gear 652, that is, the locking position. When the lock When the tight disk 651 moves to the locking position, the first protrusion 654 abuts against the other end of the spring piece 653, and drives the spring piece 653 to snap into the ring gear 652, reverse the locking disk 651, and the second The protrusion 655 rotates with the locking disk 651 , and the second protrusion 655 abuts against the spring piece 653 and pushes the other end of the spring piece 653 in the opposite direction, so that the other end of the spring piece 653 is separated from the ring gear 652 .

In this embodiment, there are two sets of spring pieces 653, two sets of second bumps 655 and first bumps 654 that drive the spring pieces 653, and two sets of stoppers 656 are set at the same time. These two sets of structures are arranged at relative positions along the diameter. , through the first locking component 65, the first handwheel 621 can be quickly and reliably locked to prevent the first handwheel 621 from rotating.

When in use, the adjustment of the first hand wheel 621 is completed, and the locking disc 651 is rotated forward. The first protrusion 654 rotates with the locking disc 651, abuts against the spring piece 653 and drives the coupling block of the spring piece 653 to snap into the inner ring gear 652. complete the locking of the first handwheel 621; when in the locked state, reverse the locking disc 651, the second protrusion 655 rotates with the locking disc 651, abuts against the other side of the spring leaf 653, and drives the coupling of the spring leaf 653 When the other end of the spring piece 653 is separated from the ring gear 652, one end surface of the second protrusion 655 just touches the stopper 656, limiting the position of the locking disc 651 and completing the operation of contact locking .

The second locking assembly 66 includes a second locking member disposed on the second hand wheel 631 , a coupling member 662 , a locking wheel 663 and a spring 664 .

In this embodiment, the connection form of the second locking member and the coupling member 662 can be the meshing of the inner and outer ring gears, or the meshing of the end face ring gear. In this embodiment, the connection form of the end face ring gear is used as an example for illustration.

The second locking part is the first end face ring gear 661. One end of the coupling part 662 is provided with a coupling structure matched with the second locking part, and the other end is provided with a concave position and a high position. The ring matches the second face ring gear 6621.

The second hand wheel 631 is provided with a counterbore 633, and a spring 664 for resetting the coupling 662 is provided. The first end ring gear 661 is arranged in the counterbore 633, and the spring 664 is installed in the middle of the first end ring gear 661. Two ends of the spring 664 abut against the bottom of the counterbore 633 and the coupling member 662 respectively. The locking wheel 663 is provided with a pressing block, and the pressing block abuts against the concave position and the high position of the coupling part 662. When the pressing block is in the concave position, the first end face ring gear 661 and the coupling part 662 The second end ring gear 6621 is separated. When the pressing block is at a high position, the spring 664 is in a compressed state. The first end ring gear 661 is meshed with the second end ring gear 6621. Rotate the locking wheel 663 again, and the spring 664 drives the connection. The member 662 is separated from the second locking member.

One end of the central axis 67 is provided with a limit block, and the other end passes through the locking wheel 663, the coupling piece 662, the first end ring gear, the second hand wheel 631, the second linkage rod 632 and the second control wheel 642 , and fixed in the center of the circular cavity of the harness housing 643 .

A regular hexagonal slide rail 665 is set, and the regular hexagonal slide rail 665 is fixedly connected with the central axis 67. The coupling piece 662 is provided with a hexagonal through hole matching the slide rail 665, and the coupling piece 662 is arranged along the slide rail. 665 sliding settings.

When in use, the pressing block of the locking wheel 663 is rotated from the concave position to the high position, and the pressing block pushes the coupling piece 662 to move, thereby making the first end face ring gear 661 and the second end face ring gear 6621 mesh, so as to achieve the purpose of locking the handwheel. Purpose, when the locking wheel 663 rotates forward or continues to rotate, and when the pressing block rotates from the high position to the concave position, the spring 664 drives the coupling 662 to move, so that the second end ring gear 6621 is separated from the first end ring gear 661, and the first hand The wheel 621 is out of the locked state. The engagement between the first end ring gear 661 and the second end ring gear 6621 is a rigid engagement, and the locked state is stable. When connecting, even if there is an external force acting on the first handwheel 621, the first end ring gear 661 will not form a reaction force against the second end ring gear 6621. In addition, since the spring 664 is in a compressed state in the locked state, even if a reaction force is formed The spring 664 in the compressed state can also make the second end ring gear 6621 and the first end ring gear 661 firmly connected, so the embodiment has the characteristics of simple structure, firm locking, and not easy to lock failure.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present invention can easily think of changes or Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (10)

1. A disposable medical endoscope, characterized in that: it includes an insertion assembly, a connecting portion, and a handwheel control portion, and the insertion assembly includes a bending portion, a front end portion, a working channel and an overcoat arranged on the front end of the control portion , a part of the working channel is arranged in the connecting part, and the other part is connected to the front end through the bending part, the jacket covers the bending part and the front end, and the proximal end of the jacket is connected to the front end. The connecting part is sealed and connected; The bending part is provided with a support assembly, and the support assembly includes a proximal joint, a hinged ring set and a distal joint, one end of the distal joint is connected to the front end, and the other end is connected to the upper end of the hinged ring set, and the proximal joint One end is connected to the lower end of the hinged ring group, and the other end is fixedly connected to the jacket, The handwheel control part includes a first handwheel assembly, a second handwheel assembly, a winding assembly for driving the bending assembly, and the winding assembly includes a first control wheel, a second control wheel, a first control cable and a second control cable, one end of the first control cable is wound around the first control wheel, and the other end is fixedly connected to the distal joint through the connecting part, the hinge ring group, and the second control cable One end is wound around the second control wheel, and the other end is fixedly connected to the distal joint through the connecting part and the hinge ring group in turn. The first hand wheel assembly controls the movement of the first control wheel, and the second hand wheel assembly controls the second control wheel. wheel sport. 2. A new type of endoscope insertion assembly according to claim 1, characterized in that, the hinged ring group comprises a plurality of hinged rings, and the plurality of hinged rings are hinged in pairs, and one end of the hinged ring Two first hinge lugs are arranged along the first radial direction, and the first hinge lugs are hinged to the adjacent hinge ring, and the other end of the hinge ring is provided with a second hinge lug along the second radial direction, and the second hinge lug is arranged along the second radial direction. The hinge ear is hinged to the adjacent hinge ring, and the first radial direction and the second radial direction are perpendicular to each other. 3. A new type of endoscope insertion assembly according to claim 2, wherein an outer ring groove is arranged on the outer wall of the upper end of the hinge ring, an inner ring groove is arranged on the inner wall of the lower end, and the first hinge ear is inserted into the corresponding In the inner ring groove of the adjacent hinge ring, the second hinge ear is sleeved in the outer ring groove of the adjacent hinge ring. 4. A new type of endoscope insertion assembly according to claim 3, wherein the first hinge ear is provided with a hinge shaft, and the second hinge ear is provided with a mounting groove, and the mounting groove includes a hinge hole and An installation channel for guiding the hinge shaft into the hinge hole, the entrance of the installation channel is set at the top or side of the hinge ear, and the outlet of the installation channel is set at the hinge hole; the outer end of the hinge shaft A stopper is provided, the transverse or longitudinal dimension of the stopper is greater than the diameter of the hinge hole; the width of the entrance of the installation groove is greater than the width of the exit of the installation groove. 5. A new type of endoscope insertion assembly according to claim 2, characterized in that, the inner wall of the hinged ring is provided with threading holes, the threading holes are oppositely arranged, and the threading holes of adjacent hinged rings are provided with two A threading hole for threading the control cable, one end of the control cable is connected to the control part, and the other end is connected to the remote joint after passing through the threading hole. 6. A new type of endoscope insertion assembly according to claim 1, wherein the connecting portion comprises a pipe casing, the proximal end of the overcoat is inserted into the casing, and the overcoat and the casing pass through Dissolving glue is sealed and bonded, and the working channel is provided with an instrument interface, a water inlet interface, an air inlet interface and a negative pressure suction interface, and the water inlet interface, the air inlet interface and the negative pressure suction interface are respectively provided with solenoid valves. 7. A new type of endoscope insertion assembly according to claim 1, wherein the front end is provided with a light source camera assembly, a transparent heat shield and a fixed cylinder, and the light source camera assembly is provided with a light source, a camera and the PCB board, the light source, the camera and the PCB board are affixed to the fixed cylinder, the fixed cylinder is provided with a working channel hole, and the working channel hole is set corresponding to the outlet of the working channel; The transparent heat shield is arranged in front of the light source, the lower part of the transparent heat shield is connected to the fixed cylinder, the observation surface of the transparent heat shield is arranged in an arc shape, and the arc observation surface makes the transparent A heat insulating cavity is formed between the heat shield and the light source. 8. A new type of endoscope insertion assembly according to claim 1, characterized in that, the first control wheel and the second control wheel both comprise a winding ring, a driving disc for fixing the winding ring , the winding ring is provided with a plurality of openings for winding the control cables of the endoscope, the driving disk of the first control wheel is arranged in the driving hole connected to the first hand wheel assembly, and the second control wheel The drive disc of the wheel is provided with a drive hole connected to the second hand wheel assembly. 9. A new type of endoscope insertion assembly according to claim 1, wherein the first handwheel assembly comprises a first linkage lever and a first handwheel, and one end of the first linkage lever is connected to the The first hand wheel is fixedly connected, and the other end is drivingly connected to the first control wheel; The second handwheel assembly includes a second linkage rod and a second handwheel disposed outside the endoscope casing, and the second linkage rod is passed through the first handwheel, the first linkage lever and the second linkage lever. A control wheel, one end of the second linkage rod is fixedly connected to the second hand wheel, and the other end is drivingly connected to the second control wheel. 10. A novel endoscope insertion assembly according to claim 9, characterized in that a first locking assembly for locking the first handwheel assembly and a second locking assembly for locking the second handwheel assembly are provided. Two locking components, The first locking assembly includes a first locking disc, a spring piece and a first locking piece, the first locking piece is connected to the first handwheel, one end of the spring piece is fixed, and a coupling block is provided at the other end, The locking disc is set to drive the coupling block to connect with the locking member, rotate the locking disc forward, and when it is rotated to the locking position, the locking disc drives the coupling block to connect with the locking member, Reversing the locking disk, the locking disk drives the coupling block to disengage from the locking piece; The second locking assembly includes a second locking piece, a coupling piece, and a second locking disk. One side of the coupling piece is connected to the second locking piece, and a concave position and a high position are set on the other side. The locking The disc is provided with a pressing block, and the pressing block abuts against the concave position or the high position. When the pressing block is in the concave position, the coupling part is separated from the second locking part. When the pressing block is in the high position, The coupling part is coupled with the second locking part.