WO2023221662A1

WO2023221662A1 - Optical hard tube endoscope

Info

Publication number: WO2023221662A1
Application number: PCT/CN2023/085110
Authority: WO
Inventors: 蒋艳荣; 朱能革
Original assignee: 杭州英术生命科技有限公司
Priority date: 2022-05-18
Filing date: 2023-03-30
Publication date: 2023-11-23
Also published as: CN115191910A

Abstract

Provided is an optical hard tube endoscope, comprising a main body (1) and a lens tube (2). A rod lens assembly, an objective lens assembly, and a front protective sheet (7) are arranged sequentially in an axial direction in the lens tube (2); an eye lens assembly is arranged in the main body (1); the eye lens assembly, the rod lens assembly, and the objective lens assembly are coaxially arranged and jointly form an imaging system. The optical hard tube endoscope further comprises a lighting system. The lighting system comprises an LED lamp (3), a power supply assembly, and a lead; the lead is electrically connected to the LED lamp (3) and the power supply assembly; the LED lamp (3) is hermetically arranged at a front end of the lens tube (2); the power supply assembly is arranged in the main body (1). In the optical hard tube endoscope, the LED lamp (3) is used for lighting, which replaces a traditional physical light transmission scheme of light guide wires, thereby achieving simple assembling and improving lighting efficiency.

Description

An optical rigid tube endoscope

Technical field

The invention belongs to the technical field of endoscopes, and in particular relates to an optical rigid tube endoscope.

Background technique

With the development of medical technology, minimally invasive surgery is also booming. Through minimally invasive surgery, the medical purposes of traditional open surgery can be achieved at a smaller cost of medical trauma, and the patient's pain can be reduced and the patient's recovery can be accelerated. As a key instrument in minimally invasive surgery, the optical rigid tube endoscope is the core instrument. Its function is to transmit the light from the external light source to the inside of the patient's cavity. After being reflected by the surface of the internal organs of the human body, it is imaged through its optical device for operation. Observers.

Since rigid tube endoscopes are optical imaging, the internal imaging system is composed of a series of precision optical lenses, and the lighting system is composed of a series of ultra-fine fiber optic filaments made of glass or quartz. These fiber optic filaments transmit light. role. In actual use, a light guide beam is used to transmit the light emitted from the light source generating device to the light cone on the rigid tube endoscope, and then the light is emitted from the front end of the rigid tube endoscope through the internal optical fiber. Achieve the purpose of illuminating the patient cavity. Due to the complex assembly process of optical fiber filaments, which usually require complex processes such as bundling, glueing and curing, and end-face grinding, the manufacturing cost of rigid tube endoscopes remains high and the production efficiency is also very low. In addition, when the user uses the device, an additional light source generating device must be equipped, which also causes inconvenience in use.

technical problem

The object of the present invention is to provide an optical rigid tube endoscope to solve the problems of high production cost and low production efficiency of the lighting system of the rigid tube endoscope in the prior art, as well as the problem of inconvenient use caused by the need for an additional light source generating device. .

Technical solutions

An optical hard-tube endoscope includes a main body and a mirror tube composed of two half-shells. One end of the mirror tube is fixed in the main body, and the other end of the mirror tube extends out of the main body. The mirror tube is composed of an endoscope tube and an outer mirror tube. There is a gap between the outer mirror tube and the endoscope tube. A rod lens assembly, an objective lens assembly and a front lens assembly are arranged in the endoscope tube along the axial direction. Protective sheet, the main body is also provided with an eyepiece assembly, the eyepiece assembly, the rod lens assembly and the objective lens assembly are coaxially arranged and jointly form an imaging system, and also include an illumination system, the illumination system includes LED lights, The power supply component and the wires passing through the gap, the wires are electrically connected to the LED lamp and the power supply component respectively, the LED lamp is sealed at the front end of the gap, and the power supply component is installed at the described within the subject.

Further, the power supply component includes a lithium battery and its control circuit board.

Further, one side of the main body protrudes outward to form an accommodation cavity for accommodating the power component, and the control circuit board is placed at the bottom of the accommodation cavity.

Further, a switch button is provided at the bottom of the accommodation cavity, and the switch button abuts the switch button on the control circuit board.

Further, the objective lens assembly includes a first objective lens and a second objective lens, and a spacer ring is provided between the first objective lens and the second objective lens.

Further, the rod mirror assembly includes a plurality of rod mirrors spaced apart along the axial direction of the endoscope tube, and a rod mirror pressure ring for fixing the rod mirror is provided at the rear end of the endoscope tube.

Further, the eyepiece assembly includes an eyepiece tube and an eyepiece located at the rear end of the eyepiece tube. The eyepiece tube and the rod lens pressure ring are coaxially connected through a spring.

Further, it also includes an eyepiece fixing ring that is sleeved on the outside of the eyepiece tube. Screws are connected between the eyepiece fixing ring and the eyepiece tube. When the screws are loosened, the eyepiece tube can move in the axial direction. Thereby changing the distance between the eyepiece and the rod lens.

Further, an eyepiece cover is provided on one end of the main body close to the eyepiece. A rear protective piece is embedded in the eyepiece cover. A connection base for connecting an external camera device is also provided on the eyepiece cover.

Further, a head end cap is provided on the front end of the mirror tube.

beneficial effects

Beneficial effects of the present invention: The structure of the present invention is reasonable in design and easy to install. Compared with traditional optical hard tube endoscopes, the traditional optical lighting method is eliminated. By using LED lights for lighting, the traditional light guide wire physical light transmission scheme is replaced. The assembly is simple and the lighting efficiency is improved. In addition, doctors do not need to connect other light source generating devices when using it, which also greatly improves the user's operational convenience.

The lighting structure of the present invention can simplify the production process, reduce assembly difficulty, improve production efficiency, thereby reducing production and manufacturing costs, making optical rigid tube endoscopes, especially arthroscopes, hysteroscopes, otolaryngoscopes, etc. with smaller diameters It is possible to promote the one-time use of a series of optical rigid endoscopes such as transforaminal endoscopes, which can greatly reduce the risk of cross-infection for patients.

Description of the drawings

Figure 1 is a side cross-sectional view of a rigid tube optical endoscope provided by an embodiment of the present invention;

Figure 2 is an enlarged view of the structure of the front end of the tube of the rigid tube optical endoscope provided by the embodiment of the present invention;

Figure 3 is an enlarged view of the main structure of the rigid tube optical endoscope provided by the embodiment of the present invention.

Among them, 1. Main body; 2. Mirror tube; 3. LED light; 4. First objective lens; 5. Second objective lens; 6. Spacer; 7. Front protective film; 8. Rod lens; 9. Eyepiece tube; 10 , Eyepiece; 11. Eyepiece fixing ring; 12. Rod lens pressure ring; 13. Lens tube fixing ring; 14. Fixing sleeve; 15. Eyepiece cover; 16. Rear protection piece; 17. Connector; 18. Lithium battery; 19 , control circuit board; 20. switch button; 21. front-end cap.

Embodiments of the invention

In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the present invention.

The specific implementation of the present invention is described in detail below with reference to specific embodiments:

Example

Figures 1-3 show a rigid tube optical endoscope provided by embodiments of the present invention. For convenience of explanation, only the parts related to the embodiment of the present invention are shown. The details are as follows:

The invention provides a hard-tube optical endoscope, which includes a main body 1 and a mirror tube 2 composed of two half-shells. One end of the mirror tube 2 is fixed in the main body 1, and the other end of the mirror tube 2 extends out of the main body. 1. In addition, the mirror tube 2 is composed of an endoscope tube and an outer mirror tube. There is a gap between the outer mirror tube and the endoscope tube. The endoscope tube is sequentially provided with a rod mirror assembly, an objective lens assembly and a front protection piece 7 along the axial direction. The main body 1 is also equipped with an eyepiece assembly. The eyepiece assembly, rod lens assembly and objective lens assembly are coaxially arranged and jointly form an imaging system. It also includes an illumination system. The illumination system includes an LED lamp 3, a power supply assembly and wires running through the gap. The wires are electrically connected to the LED lamp 3 and the power component respectively. The LED lamp 3 is sealed and arranged at the front end of the gap, and the power component is arranged in the main body 1 .

In the embodiment of the present invention, the main body 1 is provided with a mirror tube fixing ring for fixing the mirror tube 2 .

Further, the power supply assembly includes a lithium battery 18 and its control circuit board 19 .

Further, one side of the main body 1 protrudes outward to form an accommodation cavity for accommodating the power supply component, and the control circuit board 19 is placed at the bottom of the accommodation cavity.

Furthermore, a switch button 20 is provided at the bottom of the accommodation cavity, and the switch button 20 abuts against the switch button on the control circuit board 19 .

Further, the objective lens assembly includes a first objective lens 4 and a second objective lens 5, and a spacer 6 is provided between the first objective lens 4 and the second objective lens 5.

Further, the rod mirror assembly includes a plurality of rod mirrors 8 spaced apart along the axial direction of the endoscope tube. The rear end of the mirror tube 2 is provided with a rod mirror pressure ring 12 for fixing the rod mirrors 8 .

Further, the eyepiece assembly includes an eyepiece tube 9 and an eyepiece located at the rear end of the eyepiece tube 9. The eyepiece tube 9 and the rod lens pressure ring 12 are coaxially connected through a spring.

Furthermore, it also includes an eyepiece fixing ring 11 that is sleeved on the outside of the eyepiece tube 9. Screws are connected between the eyepiece fixing ring 11 and the eyepiece tube 9. When the screws are loosened, the eyepiece tube 9 can move along the axial direction to change the position between the eyepiece 10 and the eyepiece tube 9. The distance between rod mirrors 8.

In the embodiment of the present invention, a fixed sleeve 14 is provided in the main body 1 in the axial direction, and the mirror tube 2 and the eyepiece tube 9 are sleeved in the fixed sleeve 14 .

Furthermore, the main body 1 is provided with an eyepiece cover 15 at one end close to the eyepiece. The eyepiece cover 15 is embedded with a rear protective sheet 16 . The eyepiece cover 15 is also provided with a connection base 17 for connecting an external camera device.

Furthermore, a head end cap 21 is provided on the front end of the mirror tube 2 .

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims

An optical hard-tube endoscope, characterized in that it includes a main body composed of two half-shells and a mirror tube. One end of the mirror tube is fixed in the main body, and the other end of the mirror tube extends out to Outside the main body, the mirror tube is composed of an endoscope tube and an outer mirror tube. There is a gap between the outer mirror tube and the endoscope tube. Rod mirror assemblies are arranged in the endoscope tube along the axial direction. , objective lens assembly and front protective sheet, the main body is also provided with an eyepiece assembly, the eyepiece assembly, the rod lens assembly and the objective lens assembly are coaxially arranged and together form an imaging system, and also include an illumination system, the illumination The system includes an LED lamp, a power supply component and wires running through the gap. The wires are electrically connected to the LED lamp and the power supply component respectively. The LED lamp is sealed at the front end of the gap. The power component is located in the main body.
The optical rigid tube endoscope according to claim 1, wherein the power component includes a lithium battery and its control circuit board.
The optical rigid tube endoscope according to claim 2, characterized in that one side of the main body protrudes outward to form an accommodating cavity for accommodating the power supply component, and the control circuit board is placed in the accommodating cavity. bottom.
The optical rigid tube endoscope according to claim 3, further comprising a switch button provided at the bottom of the accommodation cavity, and the switch button abuts the switch button on the control circuit board.
The optical rigid tube endoscope according to any one of claims 1 to 4, wherein the objective lens assembly includes a first objective lens and a second objective lens, and a spacer is provided between the first objective lens and the second objective lens. lock up.
The optical rigid tube endoscope according to any one of claims 1 to 4, wherein the rod mirror assembly includes a plurality of rod mirrors arranged at intervals along the axial direction of the endoscope tube, and the rear end of the mirror tube A rod mirror pressure ring is provided to fix the rod mirror.
The optical rigid tube endoscope according to claim 6, characterized in that the eyepiece assembly includes an eyepiece tube and an eyepiece located at the rear end of the eyepiece tube, and the eyepiece tube and the rod mirror pressure ring are coaxial through a spring. connect.
The optical rigid tube endoscope according to claim 7, further comprising an eyepiece fixing ring sleeved on the outside of the eyepiece tube, and screws are connected between the eyepiece fixing ring and the eyepiece tube, When the screw is loosened, the eyepiece tube can move axially to change the distance between the eyepiece and the rod lens.
The optical rigid tube endoscope according to claim 8, characterized in that an eyepiece cover is provided on one end of the main body close to the eyepiece, a rear protective sheet is embedded in the eyepiece cover, and the eyepiece cover is further It is equipped with a connection base for connecting external camera devices.
The optical rigid tube endoscope according to claim 1, wherein a head end cap is provided on the front end of the lens tube.