Detachable front end of endoscope and endoscope
Through ultrasonic welding and polishing of the polished black plastic cover and transparent plastic lens, combined with the locking structure and sealing ring, the fogging and pollution problems of the endoscope lens are solved, achieving a smooth and seamless design of the front end and long-term heat preservation. Improves image quality and service life.
Patent Information
- Application Number
- CN202420555491.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-03-21
AI Technical Summary
In clinical use, endoscopes are prone to lens fog and contamination problems, and chamfers and residual solder are present at existing welding connections, resulting in difficulty in cleaning and degradation of image quality.
Ultrasonic welding is performed using black plastic cover and transparent plastic lenses, polished to form a smooth surface, combining the locking structure and sealing ring to ensure smooth and seamless front end, easy to clean, and extend the temperature by immersion through hot water to avoid fog.
It realizes efficient cleaning of the front end of the endoscope and long-term heat preservation, avoids lens fog and pollution, and improves image quality and service life.
Smart Images
Figure CN222303881U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an endoscope, in particular to a detachable front end of an endoscope and an endoscope. Background Art
[0002] Laparoscopic endoscope is a medical device used to observe the human abdominal cavity and is a necessary instrument for minimally invasive abdominal surgery. There are currently two types of endoscopes: one is the traditional fiber optic endoscope, which uses optical fiber to transmit images; the other is the electronic endoscope, which uses a micro-image sensor at the front of the lens to process the signal through an image processor and present it on the display screen, with better color reproduction and higher resolution.
[0003] At present, there are some problems in the clinical use of endoscopes:
[0004] The first is lens fogging. As the temperature of the glass lens is relatively low, it is easy to fog in the human abdominal cavity where the temperature is relatively high. The condensed water vapor also affects the field of vision. During clinical surgery, the endoscope needs to be frequently pulled out and soaked in hot water to reduce the fogging phenomenon.
[0005] The second is the pollution problem. When the endoscope is working in the abdominal cavity, it often touches human tissue and is contaminated with blood / tissue fluid. At the same time, when the electrosurgical knife is performing surgery, its smoke will condense on the lens. At this time, the front end needs to be cleaned and wiped to ensure the image quality. However, whether it is an optical endoscope or an electronic endoscope, its front end is generally composed of a stainless steel body and a glass lens that are welded / bonded. In order to improve the welding yield, the glass lens will have a certain degree of indentation, which will result in a chamfer at the connection between the stainless steel body and the glass lens. At the same time, there is solder in the chamfer that cannot be polished and has a relatively rough surface. Therefore, when wiping, the dirt in the chamfer is difficult to wipe off, and it will continue to be brought to the lens by the wiping cloth, causing secondary pollution, which greatly reduces the cleaning efficiency. At the same time, the burrs on the solder will also tear off the fibers on the wiping cloth, which will also affect the appearance of the image. Utility Model Content
[0006] The utility model aims to provide a detachable front end of an endoscope and an endoscope comprising the front end, the front end is smooth and seamless, has no residual solder, is easy to clean during surgery, can maintain heat for a long time after being soaked in hot water, and better avoids fogging.
[0007] The technical solution adopted by the utility model is:
[0008] A detachable front end of an endoscope is used for detachably assembling on the front part of a scope body, comprising a cover body made of black plastic material and a lens made of transparent plastic material. One end of the cover body is sealed and the other end is open. An illumination window and an imaging window are provided at the sealed end of the cover body. The lens is installed in the illumination window and the imaging window and is fixed by ultrasonic welding and polished to form a smooth surface. The open end of the cover body can cover the front part of the scope body.
[0009] Preferably, an anti-fog film or an anti-oil film is provided on the outer surface of the lens.
[0010] Preferably, the cover body is made of PEEK material or PPSU material modified by carbon fiber or carbon nanospheres.
[0011] Preferably, the lens is made of anti-reflection modified PC material.
[0012] An endoscope comprises the above-mentioned detachable front end and mirror body of the endoscope, a cover body covers the front part of the mirror body and the two are locked by a locking structure, a sealing ring is used to seal the open end surface of the cover body and the step surface of the mirror body, and the lighting window and the imaging window are respectively opposite to the lighting module and the camera at the front end of the mirror body.
[0013] As one of the solutions, the locking structure includes threaded holes and locking screws. The threaded holes are distributed on the sides of the cover body and the mirror body. When the threaded holes on the sides of the cover body and the mirror body are aligned, the lighting window and the imaging window are respectively facing the lighting module and the camera on the mirror body, and the locking screws cooperate with the threaded holes on the sides of the cover body and the mirror body at the same time.
[0014] As another solution, the locking structure includes an internal thread and an external thread. The internal thread is arranged on the cover body, and the external thread is arranged at the front end of the mirror body. When the internal thread and the external thread are in place, the lighting window and the imaging window are respectively facing the lighting module and the camera on the mirror body.
[0015] Preferably, the sealing ring is an O-ring.
[0016] Preferably, the lighting module adopts a light-guiding optical fiber or an LED lamp; the camera is installed at the front end of the mirror body through a camera module, and the camera module adopts an image transmission lens group or a sensor circuit board.
[0017] The beneficial effects of the utility model are:
[0018] The cover is made of black plastic and the lens is made of transparent plastic. The two are fixed by ultrasonic welding, which can make the different plastics completely fuse together without seams and without the need for additional solder. They are also polished to form a smooth surface. Therefore, the front end of the endoscope is smooth and seamless, without residual solder, and is easy to clean during surgery. In addition, as plastic materials, the thermal conductivity of the cover and the lens is much lower than that of stainless steel, and the specific heat capacity is about 3 to 4 times that of stainless steel. Therefore, after soaking them in hot water, the temperature is maintained longer, which better avoids fogging. In addition, the cover is made of black plastic, which can also separate the lighting window and the imaging window to prevent the lighting light from affecting the image quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a stereoscopic diagram of the front end of the detachable endoscope in the embodiment of the utility model.
[0020] Figure 2 It is an end view of the front end of the detachable endoscope in the embodiment of the utility model.
[0021] Figure 3 It is a three-dimensional diagram of the mirror body in the embodiment of the utility model.
[0022] Figure 4 It is a stereoscopic diagram of an endoscope in an embodiment of the utility model.
[0023] Figure 5 It is a cross-sectional view of an endoscope in an embodiment of the utility model.
[0024] In the figure: 1-cover; 2-lighting window; 3-imaging window; 4-locking screw; 5-lighting module; 6-camera; 7-camera module; 8-mirror body; 9-sealing ring. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0026] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0028] The features and performance of the present application are further described in detail below in conjunction with the embodiments.
[0029] Embodiment 1
[0030] This embodiment discloses a detachable front end of an endoscope, which is used to be detachably assembled on the front part of the mirror body 8, such as Figure 1 and Figure 2 As shown, it includes a cover body 1 made of black plastic material and a lens made of transparent plastic material (the transmittance of which should be above 95% to avoid affecting the lighting efficiency and image quality); wherein, one end of the cover body 1 is sealed and the other end is open, and a lighting window 2 and an image collecting window 3 are provided at the sealed end of the cover body 1, and the lens is installed in the lighting window 2 and the image collecting window 3 and fixed by ultrasonic welding and polished to form a smooth surface, and the open end of the cover body 1 can cover the front of the lens body 8.
[0031] Preferably, after the lens surface is ground and polished, an anti-fog film or an anti-oil film may be provided on the outer surface of the lens, so that the lens is less likely to fog and is easier to clean.
[0032] Preferably, the cover 1 can be made of PEEK material or PPSU material modified by carbon fiber or carbon nanospheres, and the lens can be made of PC material modified by anti-reflection. For example, in this embodiment: the cover 1 is made of PEEK material doped with 10% carbon fiber, with a modulus of 8Gpa, and is made by machining. Its length is 20mm, diameter is 10mm, wall thickness is 2mm, and 4 threaded holes are processed in one circle of the side wall; the lens is made of ultraviolet radiation cross-linked PC material, with a transmittance of 96%, and is made by mold injection molding. The lighting window 2 is a circle with a diameter of 4mm and a thickness of 2mm, and the image collection window 3 is a trapezoid with a width of 3 / 5mm, a height of 2mm, and a thickness of 2mm.
[0033] In the above scheme: the cover body 1 is made of black plastic material, which has the characteristics of high strength, high tolerance and ultrasonic welding; the lens is made of transparent plastic material, which has the characteristics of transparency, high strength, high tolerance and ultrasonic welding. The two are fixed by ultrasonic welding, which can make different plastics completely merge together without seams and no additional solder is required, and they are polished to form a smooth surface. Therefore, the front end of the endoscope is smooth and seamless, without residual solder, and easy to clean during surgery; the cover body 1 and the lens are made of plastic, and their thermal conductivity is much lower than that of stainless steel, and their specific heat capacity is about 3 to 4 times that of stainless steel. Therefore, after soaking them in hot water, their temperature is maintained for a longer time, which better avoids fogging; the cover body 1 is made of black plastic material, and can also separate the lighting window 2 and the imaging window 3 to prevent the lighting light from affecting the image quality.
[0034] Embodiment 2
[0035] This embodiment discloses an endoscope, such as Figure 4 and Figure 5 As shown, it includes the above-mentioned detachable front end of the endoscope and the mirror body 8, the cover body 1 covers the front part of the mirror body 8 and the two are locked by a locking structure, the open end surface of the cover body 1 and the step surface of the mirror body 8 are sealed by a sealing ring 9, and the lighting window 2 and the imaging window 3 are respectively facing the lighting module 5 and the camera 6 at the front end of the mirror body 8.
[0036] Regarding the design of the locking structure, as long as it can meet the locking requirements of the cover body 1 and the mirror body 8, the structure is not limited:
[0037] For example, in this embodiment, Figure 4 and Figure 5 As shown, the locking structure includes threaded holes and locking screws 4. The threaded holes are distributed on the sides of the cover body 1 and the mirror body 8. When the threaded holes on the sides of the cover body 1 and the mirror body 8 are aligned, the lighting window 2 and the imaging window 3 are respectively facing the lighting module 5 and the camera 6 on the mirror body 8, and the locking screws 4 cooperate with the threaded holes on the sides of the cover body 1 and the mirror body 8 at the same time.
[0038] For another example, the locking structure may include an internal thread and an external thread, the internal thread is provided on the cover body 1, and the external thread is provided at the front end of the mirror body 8, and when the internal thread and the external thread are in place, the lighting window 2 and the imaging window 3 are respectively facing the lighting module 5 and the camera 6 on the mirror body 8.
[0039] In this embodiment, preferably, the sealing ring 9 is an O-ring.
[0040] In this embodiment, preferably, the lighting module 5 uses a light-guiding optical fiber or an LED lamp; the camera 6 is installed at the front end of the scope 8 through the camera module 7, and the camera module 7 uses an image transmission lens group or a sensor circuit board. This structure is common to optical endoscopes and electronic endoscopes.
[0041] In this embodiment, if Figure 3 As shown, the mirror body 8 adopts an integrated design in which an inner mirror rod and an outer mirror tube are solidified into a whole by adhesive. A step with a depth of 1 mm is opened 18 mm away from the front end of the mirror body 8, and 4 threaded holes are processed at the corresponding positions of the cover body 1.
[0042] After normal cleaning, sterilization and use for several times, if problems such as blurred lenses or aging of plastic occur, they can be cleaned and sterilized first, and then replaced with a new front end for continued use. This is low-cost and easy to replace, which is equivalent to extending the service life of the mirror body 8.
[0043] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.
Claims
1. A detachable front end of an endoscope, characterized in that: It is used to be detachably assembled on the front part of the mirror body, including a cover body made of black plastic material and a lens made of transparent plastic material. One end of the cover body is sealed and the other end is open. The sealed end of the cover body is provided with a lighting window and an imaging window. The lens is installed in the lighting window and the imaging window and is fixed by ultrasonic welding and polished to form a smooth surface. The open end of the cover body can cover the front part of the mirror body.
2. The detachable front end of the endoscope according to claim 1, characterized in that: An anti-fog film or an anti-oil film is provided on the outer surface of the lens.
3. The detachable front end of the endoscope according to claim 1, characterized in that: The cover body is made of PEEK material or PPSU material modified by carbon fiber or carbon nanospheres.
4. The detachable front end of the endoscope according to claim 1, characterized in that: The lens is made of anti-reflective modified PC material.
5. An endoscope, characterized in that: It comprises a detachable front end and a body of the endoscope as described in any one of claims 1 to 4, a cover body covering the front of the body and the two are locked by a locking structure, an open end surface of the cover body and a step surface of the body are sealed by a sealing ring, and the lighting window and the imaging window are respectively opposite to the lighting module and the camera at the front end of the body.
6. The endoscope according to claim 5, characterized in that: The locking structure includes threaded holes and locking screws. The threaded holes are distributed on the sides of the cover body and the mirror body. When the threaded holes on the sides of the cover body and the mirror body are aligned, the lighting window and the imaging window are respectively facing the lighting module and the camera on the mirror body, and the locking screws cooperate with the threaded holes on the sides of the cover body and the mirror body at the same time.
7. The endoscope according to claim 5, characterized in that: The locking structure includes an internal thread and an external thread. The internal thread is arranged on the cover body, and the external thread is arranged at the front end of the mirror body. When the internal thread and the external thread are in place, the lighting window and the imaging window are respectively facing the lighting module and the camera on the mirror body.
8. The endoscope according to any one of claims 5 to 7, characterized in that: The sealing ring adopts an O-ring.
9. The endoscope according to any one of claims 5 to 7, characterized in that: The lighting module adopts light-guiding optical fiber or LED lamp; the camera is installed at the front end of the mirror body through the camera module, and the camera module adopts an image transmission lens group or a sensor circuit board.