CN216317508U

CN216317508U - Endoscope with a detachable handle

Info

Publication number: CN216317508U
Application number: CN202122563371.9U
Authority: CN
Inventors: 刘木彪; 林敏�; 罗维涛; 王金陵; 陆玉平
Original assignee: Simai Co Ltd
Current assignee: Zhuhai Peoples Hospital; Simai Co Ltd
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2022-04-19
Anticipated expiration: 2031-10-22

Abstract

The utility model relates to the technical field of medical appliances, and provides an endoscope, which comprises: the lens base comprises a handle and a straight pipe sleeve which is telescopically arranged on the handle; the endoscope tube is provided with a bending part which is in a bending state under a natural state, the endoscope tube is connected with the endoscope seat, and the straight tube is sleeved on the endoscope tube; the push-pull device is connected with the straight pipe sleeve and is used for pushing the straight pipe sleeve to move on the mirror tube and enabling the bending part to relatively extend out of or retract into the straight pipe sleeve; and a camera arranged at the front end of the head end part of the bending part. Compared with the prior art, the endoscope solves the technical problem that the endoscope with the bendable head end part has higher manufacturing cost, has a simple structure, realizes the bending control of the head end part of the electronic endoscope, and greatly reduces the production cost while achieving the same bending effect.

Description

Endoscope with a detachable handle

Technical Field

The utility model belongs to the technical field of medical appliances, and particularly relates to an endoscope.

Background

The medical industry is rapidly developing, and the demand of electronic endoscopes is increasing. The endoscope is a tool for observing the information of the focus in the human body, and can provide effective image information for medical staff so as to accurately diagnose the human body state. In the using process, medical care personnel extend the endoscope into the body from respective natural cavities of the body and observe the environment or organs in the corresponding body channel to check whether the condition is normal or not, so as to diagnose the condition of an illness. Since the endoscope is directly inserted into the human body, the endoscope can be damaged by accident, so that the requirement on the endoscope is very high.

In current human body examination, there is an endoscope having a curved head end portion so as to switch a lens angle of view when being inserted into a human body, to better observe the internal condition of the human body. In order to achieve the effect, the conventional electronic endoscope generally adopts a mode of pulling and bending a snake bone by a steel wire rope, and the structural mode has high manufacturing cost and cannot meet the requirements of low-cost application.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an endoscope, which aims to solve the problem that the existing endoscope with a bendable head end part is high in manufacturing cost, realizes the bending control of the head end part of an electronic endoscope by using the structural design, and can greatly reduce the production cost while achieving the same bending effect.

The technical scheme adopted by the utility model is as follows: there is provided an endoscope comprising: the microscope base comprises a handle and a straight tube sleeve which is telescopically arranged on the handle; the endoscope tube is provided with a bending part which is in a bending state under a natural state, the endoscope tube is connected with the endoscope seat, and the straight tube is sleeved on the endoscope tube; the push-pull device is connected with the straight pipe sleeve and is used for pushing the straight pipe sleeve to move on the mirror tube and enabling the bending part to relatively extend out of or retract into the straight pipe sleeve; and the camera is arranged at the extending end of the bending part.

According to the endoscope provided by the utility model, at least the following characteristic effects are provided: compared with the prior art, the bending of the lens at the head end part is realized by combining the straight pipe sleeve with the naturally bent lens pipe, when the straight pipe sleeve extends out of the handle, the bent part of the lens pipe is gradually straightened by the straight pipe sleeve, the bending angle is smaller and smaller, until the bent part is completely retracted into the straight pipe sleeve, the shooting direction of the camera is the same as the linear direction of the straight pipe sleeve, and the forward observation visual angle is formed at the moment, otherwise, when the straight pipe sleeve is gradually retracted into the handle, the bent part gradually extends out of the straight pipe sleeve, and under the action of the elastic restoring force of the straight pipe sleeve, the bending angle of the extending part is larger and larger, and gradually returns to the initial natural bending state; the endoscope is simple in overall structure, the shooting visual angle of the head camera can be adjusted only through extension and retraction of the straight pipe sleeve, the production cost of the endoscope with the bent head is remarkably reduced, and batch production is facilitated.

Optionally, the push-pull device comprises a threaded sleeve and an adjusting knob in threaded connection with the threaded sleeve, the adjusting knob is rotatably arranged on the microscope base, and the threaded sleeve is fixedly connected to the straight tube sleeve.

Optionally, the adjusting knob is provided with a plurality of rotation scales which are uniformly arranged around the circumferential direction of the rotation axis.

Optionally, the lens base further comprises a movable blocking piece, and the movable blocking piece is sleeved on the straight tube sleeve and can axially move on the straight tube sleeve.

Optionally, the mirror tube comprises a straight tube portion and the bending portion arranged at one end of the straight tube portion, and one end of the straight tube portion is arranged in the handle and connected with the push-pull device.

Optionally, a positioning piece is arranged at the tail end of the straight pipe part, a positioning space is arranged in the handle, and the positioning piece is limited in the positioning space.

Optionally, the end of the straight pipe sleeve is provided with a limiting piece, the handle is internally provided with a first limiting part matched with the limiting piece, and when the limiting piece abuts against the first limiting part, the bending part is completely retracted into the straight pipe sleeve.

Optionally, a second limiting portion is arranged in the handle, a sleeve axial stroke interval is formed between the first limiting portion and the second limiting portion, and the limiting piece moves in the sleeve axial stroke interval.

Optionally, the handle is provided with a water inlet channel and a water drainage channel, the water inlet channel and the water drainage channel are communicated with the mirror tube, and the extending end of the bending part is provided with a water drainage hole communicated with the inside of the mirror tube.

Optionally, the straight pipe sleeve is a steel pipe.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic structural diagram of an endoscope provided by an embodiment of the present invention;

FIG. 2 is an enlarged partial schematic view at A of the endoscope provided in FIG. 1;

FIG. 3 is an exploded schematic view of the endoscope provided in FIG. 1;

fig. 4 is a schematic view of the endoscope provided in fig. 1 in full section.

Wherein, in the figures, the respective reference numerals:

the endoscope comprises an endoscope seat 100, a handle 110, a left half shell 111, a left groove 1111, a right half shell 112, a positioning space 113, a first limit part 114, a second limit part 115, a sleeve axial stroke interval 116, a straight pipe sleeve 120, a limit sheet 121, a movable blocking sheet 130, a water inlet channel 140 and a water discharge channel 150;

a mirror tube 200, a bending part 210, a water discharge hole 211, a straight tube part 220, and a positioning piece 221;

the push-pull device 300, a thread bush 310, an external thread 311, an adjusting knob 320, an internal thread groove 321, a rotary convex part 322 and a rotary scale 323;

a camera 400.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

An endoscope provided by an embodiment of the present invention will now be described with reference to the drawings.

Referring to fig. 1 to 4, an endoscope includes a lens base 100, a lens tube 200, a push-pull device 300 and a camera 400, the lens base 100 includes a handle 110 and a straight tube sleeve 120, the straight tube sleeve 120 is telescopically arranged on the handle 110, a telescopic channel is arranged in the handle 110, and the straight tube sleeve 120 is arranged in the telescopic channel and extends out from a channel opening of the telescopic channel. The scope tube 200 includes a bending portion 210, and the bending portion 210 is in a bent state in a natural state, has an elastic recovery capability, can be straightened by an external force, and is restored to an initial bent state when the external force is removed. The lens tube 200 is connected to the lens base 100 and extends out of the lens base 100, the straight tube sleeve 120 is sleeved on the lens tube 200, and the lens tube 200 is wrapped inside the straight tube sleeve 120 and can relatively extend and retract in the straight tube sleeve 120. The push-pull device 300 is connected with the straight tube sleeve 120 and is used for pushing the straight tube sleeve 120 to move on the mirror tube 200, so that the bending part 210 relatively extends out of or retracts into the straight tube sleeve 120. The camera 400 is disposed at the extended end of the bending part 210, i.e. the farthest end of the lens tube 200 facing away from the handle 110, and adjusts the shooting angle through the bending degree of the bending part 210.

The operation process of the endoscope is as follows: the push-pull device 300 pushes the straight pipe sleeve 120 to move towards the stretching direction, the bent portion 210 is gradually covered, the bent portion 210 gradually reduces the bending angle under the pushing action of the straight pipe sleeve 120, and therefore the shooting bending angle of the camera 400 is adjusted until the bent portion 210 is finally bent and retracted into the straight pipe sleeve 120.

Compared with the prior art, the bending of the lens at the head end part is realized by combining the straight pipe sleeve 120 and the naturally bent lens tube 200, when the straight pipe sleeve 120 extends out of the handle 110, the bending part 210 of the lens tube 200 is gradually straightened by the straight pipe sleeve 120, the bending angle is smaller and smaller, until the bending part 210 is completely retracted into the straight pipe sleeve 120, the shooting direction of the camera 400 is the same as the linear direction of the straight pipe sleeve 120, and the forward observation visual angle is formed at the moment, on the contrary, when the straight pipe sleeve 120 is gradually retracted into the handle 110, the bending part 210 gradually extends out of the straight pipe sleeve 120, and under the action of the elastic restoring force of the straight pipe sleeve 120, the bending angle of the extending part is larger and larger, and gradually returns to the initial natural bending state; the endoscope is simple in overall structure, the shooting visual angle of the head camera 400 can be adjusted only by stretching out and retracting in the straight pipe sleeve 120, the production cost of the endoscope with the bent head is limited and reduced, and the endoscope is favorable for batch production.

In one embodiment of the present invention, the push-pull device 300 comprises a threaded sleeve 310 and an adjusting knob 320, wherein the threaded sleeve 310 is provided with an external thread 311, the adjusting knob 320 is provided with a through hole, the through hole is provided with an internal thread groove 321 matched with the external thread 311, and the threaded sleeve 310 is connected in the adjusting knob 320 through a matched thread between the external thread 311 and the internal thread groove 321. The adjusting knob 320 is rotatably arranged on the microscope base 100, the threaded sleeve 310 is fixedly connected to the straight tube sleeve 120, and when the adjusting knob 320 is rotated on the microscope base 100, the threaded sleeve 310 is pushed by the threads to move along the axial direction of the through hole, wherein the axial direction is the moving direction of the straight tube sleeve 120. In this embodiment, handle 110 includes the shell, and the shell is formed by left half shell 111 and right half shell 112 assembly, and adjust knob 320 is the rotator, has gyration lug 322 on it, is equipped with left recess 1111 on left half shell 111, is equipped with right recess on right half shell 112, and left recess 1111 and right recess form the rotation screens that can block gyration lug 322, and adjust knob 320 rotates the setting on handle 110 through the cooperation between gyration lug 322 and the rotation screens. The axial movement of the straight pipe sleeve 120 is realized through the structure in a thread pushing mode, the rotation of the adjusting knob 320 is converted into the linear movement of the straight pipe sleeve 120, an operator can conveniently adjust the curvature of the lens on the endoscope, and the endoscope is very simple to use.

Specifically, be equipped with a plurality of rotatory scales 323 that arrange around axis of rotation circumference on adjust knob 320, every rotatory scale 323 is a numerical value, and the inclination that camera 400 corresponds when this numerical value is adjusted to this position for adjust knob 320, makes things convenient for the user to adjust the shooting angle of camera 400.

Further, the thread sleeve 310 can be fixed on the mirror tube 200 by means of glue bonding, can also be fixed on the mirror tube 200 by means of interference fit, and certainly can also be synchronously fixedly connected with the mirror tube 200 by means of snap fit, and can both realize the pushing and pushing action of the push-pull device 300 on the straight tube sleeve 120.

In another embodiment of the present invention, the lens holder 100 further comprises a movable blocking piece 130, wherein the movable blocking piece 130 is sleeved on the straight tube sleeve 120 and can axially move on the straight tube sleeve 120 for blocking the liquid in the human body from flowing out of the endoscope. The movable blocking sheet 130 is in a conical shape as a whole, wherein the small head part faces to the direction of the lens, so that the opening of liquid flowing out of a human body can be plugged, and the liquid blocking capability is improved.

In another embodiment of the present invention, the mirror tube 200 comprises a straight tube portion 220 and a curved portion 210 disposed at one end of the straight tube portion 220, wherein one end of the straight tube portion 220 is disposed in the handle 110 and connected to the push-pull device 300. The proportion of the straight tube portion 220 can be reasonably designed according to the bending degree, and the longer the proportion of the straight tube portion 220 is, the longer the pushing distance required by the straight tube sleeve 120 is, and correspondingly, the shorter the proportion of the straight tube portion 220 is, the greater the deformation degree of the bending portion 210 is, and the greater the pushing force of the straight tube sleeve 120 is.

Specifically, the end of the straight tube part 220 is provided with a positioning element 221, a positioning space 113 is arranged in the handle 110, the positioning space 113 is formed by a left cavity of the left half shell 111 and a right cavity of the right half shell 112, the positioning element 221 is circular and can rotate in the positioning space 113, but the wall surfaces at two sides of the positioning space 113 are axially limited on the handle 110 and cannot axially extend and retract relative to the handle 110, and the positioning space 113 provides a condition that the straight tube sleeve 120 can move relative to the endoscope tube 200 in an extending and retracting manner.

Of course, the scope tube 200 may be formed entirely of the bent portion 210 in addition to the structure in which the straight tube portion 220 and the bent portion 210 are provided, so that the bending resistance of the straight tube housing 120 can be reduced, and the production cost can be further reduced.

In another embodiment of the present invention, the end of the straight tube sleeve 120 has a limiting piece 121, the limiting piece 121 is used for limiting the axial moving distance of the straight tube sleeve 120, the handle 110 has a first limiting portion 114 matching with the limiting piece 121, when the limiting piece 121 abuts against the first limiting portion 114, the bending portion 210 is completely retracted into the straight tube sleeve 120, at this time, the shooting direction of the camera 400 is the axial direction of the straight tube sleeve 120, and the first limiting portion 114 limits the longest extending position of the straight tube sleeve 120 on the handle 110.

Further, the handle 110 has a second position-limiting portion 115, a sleeve axial space 116 is formed between the first position-limiting portion 114 and the second position-limiting portion 115, the sleeve axial space 116 is a telescopic distance of the straight tube sleeve 120 on the handle 110, the position-limiting piece 121 moves in the sleeve axial space 116, and when the position-limiting piece 121 abuts against the second position-limiting portion 115, the extending distance of the endoscope 200 is the longest distance. In this embodiment, when the endoscope tube 200 is extended to the maximum, the bending portion 210 is bent and extended to the straight tube housing 120, so that the straight tube housing 120 can be effectively utilized. The movement distance of the straight pipe sleeve 120 is limited by the first limiting part 114 and the second limiting part 115, so that the straight pipe sleeve 120 is prevented from being separated from the handle 110, and the structural reliability is improved.

In another embodiment of the present invention, the handle 110 has a water inlet channel 140 and a water discharge channel 150, the water inlet channel 140 is externally connected with a water inlet pipe, the water discharge channel 150 is externally connected with a water discharge pipe, the water inlet channel 140 and the water discharge channel 150 are communicated with the endoscope tube 200, the extending end of the bending portion 210 has a water discharge hole 211 communicated with the inside of the endoscope tube 200, water enters the inside of the endoscope tube 200 from the water inlet channel 140, the endoscope tube 200 has a water conduit therein, water flows out from the front end of the endoscope tube 200 to fill the human body with water, and simultaneously, liquid inside the human body can enter the endoscope tube 200 through the water discharge hole 211 and be discharged through the water discharge channel 150. Through the design of the water inlet channel 140 and the water outlet channel 150, water circulation is realized, and a clear endoscope observation environment is formed.

In another embodiment of the present invention, the bending portion 210 of the lens tube 200 is made of an elastically deformable material, has a good elastic recovery capability, and can withstand frequent pressing deformation. In this embodiment, the bending portion 210 may be made of a bending material such as plastic, and the bending is achieved by using the bending elasticity of the material itself, and the straight pipe sleeve 120 is straightened under the spatial constraint, or a steel wire bending material may be used.

In another embodiment of the present invention, the straight pipe sleeve 120 is a steel pipe, which has good anti-rust and anti-deformation capabilities, and can provide sufficient thrust to deform the bending portion 210.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. An endoscope, comprising:

the microscope base comprises a handle and a straight tube sleeve which is telescopically arranged on the handle;

the endoscope tube is provided with a bending part which is in a bending state under a natural state, the endoscope tube is connected with the endoscope seat, and the straight tube is sleeved on the endoscope tube;

the push-pull device is connected with the straight pipe sleeve and is used for pushing the straight pipe sleeve to move on the mirror tube and enabling the bending part to relatively extend out of or retract into the straight pipe sleeve;

and the camera is arranged at the extending end of the bending part.

2. The endoscope as defined in claim 1, wherein said push-pull device comprises a threaded sleeve and an adjusting knob in threaded connection with said threaded sleeve, said adjusting knob being rotatably disposed on said lens base, said threaded sleeve being fixedly attached to said straight tube sleeve.

3. The endoscope as defined in claim 2, wherein said adjustment knob is provided with a plurality of rotation scales circumferentially disposed about the rotation axis.

4. The endoscope as defined in claim 1, wherein the lens mount further comprises a movable blocking piece, wherein the movable blocking piece is sleeved on the straight tube sleeve and can move axially on the straight tube sleeve.

5. An endoscope as defined in claim 1 wherein said scope tube comprises a straight tube portion and said curved portion is provided at one end of said straight tube portion, one end of said straight tube portion being provided within said handle and connected to said push-pull device.

6. An endoscope according to claim 5, wherein a distal end of said straight tube portion is provided with a positioning member, and a positioning space is provided in said handle, said positioning member being confined in said positioning space.

7. The endoscope of claim 1, wherein the straight tube housing has a stop piece at a distal end thereof, and the handle has a first stop portion therein that cooperates with the stop piece, and when the stop piece abuts against the first stop portion, the bending portion is completely retracted into the straight tube housing.

8. The endoscope as defined in claim 7, wherein the handle has a second stop portion therein, the first stop portion and the second stop portion defining a sleeve axial travel interval therebetween, the stop tab moving in the sleeve axial travel interval.

9. The endoscope as defined in claim 1, wherein said handle has a water inlet channel and a water discharge channel, said water inlet channel and said water discharge channel are communicated with said endoscope tube, and an extended end of said bending portion has a water discharge hole communicated with the inside of the endoscope tube.

10. The endoscope of claim 1, wherein the straight tube sleeve is a steel tube.