Endoscope camera head resistant to autoclaving

Abstract

The application discloses a high-temperature and high-pressure sterilization-resistant endoscope camera and relates to the technical field of endoscope cameras.The endoscope camera comprises an optical assembly and a camera handle for fixing the optical assembly, the optical assembly comprises a lens barrel fixedly connected with the camera handle, the inside of the lens barrel is provided with three lens seats, the outer wall of the lens barrel is provided with three guide grooves, and the three lens seats can move along the three guide grooves.Through the three guide grooves formed in the outer wall of the lens barrel and the three lens seats arranged in the inside of the lens barrel, the stainless steel cover fixedly connected with the outer wall of the lens barrel can make the lens barrel be wholly closed, so that liquid and microorganisms cannot enter the inside of the lens barrel, and the lens seats in the lens barrel are prevented from being polluted, meanwhile, the outer wall of the stainless steel cover is provided with a driving device, so that the lens seats can rotate along the guide grooves, the distance between the lens seats can be adjusted while the lens seats are rotating, and the appropriate focal length can be achieved, thereby solving the problem that the lens barrel cannot be sealed.

Description

Technical Field

[0001] This invention relates to the field of endoscopic camera technology, and in particular to an endoscopic camera resistant to high temperature and high pressure sterilization. Background Technology

[0002] With the continuous advancement of medical imaging technology, medical cameras, as one of the important diagnostic tools, play an indispensable role in clinical practice. To ensure the safety and effectiveness of medical devices, especially endoscopes and other precision optical devices used in minimally invasive surgery, they not only need to have high-resolution image quality, but also need to be reusable under strict sterilization conditions.

[0003] The applicant found through a search that a Chinese patent discloses "Endoscopic Camera and Endoscopic Imaging System", with the publication number "CN112656356A". In this patent, when adjusting the imaging, the rotation of the handwheel drives the pin to rotate, and the pin drives the optical component to rotate in the spiral groove to achieve the adjustment of the focal length.

[0004] However, endoscopes must be thoroughly sterilized after each surgery. The mainstream sterilization methods on the market are low-temperature plasma and high-temperature and high-pressure sterilization. These two sterilization methods place high demands on the sealing of the optical bayonet itself. Basically, it needs to reach the IP68 waterproof rating to ensure that multiple sterilizations do not affect the cleanliness of the internal optical lenses. However, for example, the optical component in the aforementioned patent uses a handwheel to drive a pin, and the pin drives the optical component to move in a spiral groove to adjust the focus. Because of the groove, the optical component leaks to the outside at multiple points, which cannot guarantee the IP68 sealing requirement and cannot prevent liquids and microorganisms from entering the internal components, causing the optical components to be contaminated. Summary of the Invention

[0005] The purpose of this invention is to provide an endoscope camera resistant to high temperature and high pressure sterilization, in order to solve the problem mentioned in the background art where the optical focal length is adjusted by grooving and moving the pin and optical components in the groove using a handwheel. Because the groove is exposed to the outside, the seal cannot meet the IP68 sealing requirement, resulting in lens contamination.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-temperature and high-pressure sterilization endoscopic camera, comprising an optical component and a camera handle for fixing the optical component. The optical component includes a lens barrel fixedly connected to the camera handle. The lens barrel has three lens mounts inside and three guide grooves on its outer wall. The three lens mounts can move along the three guide grooves. A stainless steel cover is welded to the outer wall of the lens barrel to seal the lens barrel. The outer wall of the stainless steel cover is provided with a driving device for driving the lens mounts to rotate and move along the guide grooves.

[0007] Preferably, the three lens mounts are lens mount one, lens mount two, and lens mount three. Each of the three lens mounts has a steel ball groove at its top. The inside of each steel ball groove is rotatably connected to a steel ball one that is adapted to the three guide grooves. The top of each of the three steel balls one is rolledly connected to the inner wall of the stainless steel cover.

[0008] Preferably, a driving ring is provided between the second lens mount and the third lens mount. The outer wall of the driving ring has an annular groove, and a second steel ball is rotatably connected inside the annular groove. The outer wall of the lens barrel has a through groove that matches the second steel ball. Multiple guide rods are fixedly connected to both sides of the driving ring, and the multiple guide rods are slidably connected to the second lens mount and the third lens mount, respectively.

[0009] Preferably, the driving device includes two handwheels, a first handwheel and a second handwheel, which are rotatably connected to a stainless steel cover. Each of the inner walls of the first handwheel and the second handwheel is fixedly connected with three positive magnets and three negative magnets, which are fixed in the inner walls of the first handwheel and the second handwheel at equal intervals.

[0010] Preferably, the outer wall of the stainless steel cover is fixedly connected with a convex ring that is compatible with handwheel one and handwheel two.

[0011] Preferably, the three guide grooves are guide groove one, guide groove two, and guide groove three. The steel ball one rotatably connected to the outer wall of the lens seat one is placed in guide groove one, the steel ball one rotatably connected to the outer wall of the lens seat two is placed in guide groove two, and the steel ball one rotatably connected to the outer wall of the lens seat three is placed in guide groove three. The direction of the three guide grooves is the curve direction simulated by optical simulation.

[0012] Preferably, the lens mount and the drive ring are made of iron or silicon steel.

[0013] Preferably, the three positive magnets and the three negative magnets are made of neodymium iron boron.

[0014] The technical effects and advantages of this invention are as follows: By providing three guide grooves on the outer wall of the microscope tube, and setting three lens holders inside the microscope tube, and fixing a stainless steel cover to the outer wall of the microscope tube, the microscope tube can be completely sealed, preventing liquids and microorganisms from entering the inside of the microscope tube, thereby preventing contamination of the lens holders inside the microscope tube. At the same time, the outer wall of the stainless steel cover is equipped with a driving device that allows the lens holders to rotate along the guide grooves. During the rotation, the distance between the lens holders can be adjusted to achieve a suitable focal length, thus solving the problem of the microscope tube not being able to be sealed. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the lens barrel of the present invention.

[0017] Figure 3 This is a schematic diagram of the front cross-sectional structure of the lens barrel of the present invention. Figure 1 .

[0018] Figure 4 This is a schematic diagram of the front cross-sectional structure of the lens barrel of the present invention. Figure 2 .

[0019] Figure 5 This is a three-dimensional structural diagram of the handwheel of the present invention.

[0020] Figure 6 This is a front view cross-sectional structural diagram of the handwheel of the present invention.

[0021] In the diagram: 1. Optical component; 2. Camera handle; 3. Lens barrel; 31. Guide groove one; 32. Guide groove two; 33. Guide groove three; 34. Steel ball one; 35. Steel ball two; 36. Through groove; 4. Lens mount one; 5. Lens mount two; 6. Lens mount three; 7. Drive ring; 71. Guide rod; 8. Positive magnet; 9. Negative magnet; 10. Stainless steel cover; 101. Convex ring; 11. Handwheel one; 12. Handwheel two. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] This invention provides, for example Figure 1-6 The endoscope camera shown includes an optical component 1 and a camera handle 2 for fixing the optical component 1. The optical component 1 includes a lens barrel 3 fixedly connected to the camera handle 2. The lens barrel 3 has three lens mounts inside and three guide grooves on the outer wall of the lens barrel 3. The three lens mounts can move along the three guide grooves. A stainless steel cover 10 that seals the lens barrel 14 is welded to the outer wall of the lens barrel 3. The outer wall of the stainless steel cover 10 is provided with a drive device for driving the lens mounts to rotate and move along the guide grooves.

[0024] To address the problem that existing optical components 1 adjust the optical focal length by moving a pin and the optical component 1 within a slot using a handwheel, the exposed slots fail to meet IP68 sealing requirements, leading to lens contamination, this invention designs an optical component 1 with three lens mounts inside a lens barrel 3. The outer wall of the lens barrel 3 has three guide grooves. The three lens mounts are driven by a drive device to rotate, allowing them to move along the three guide grooves to adjust the focal length. Simultaneously, a stainless steel cover 10 is fixedly connected to the outer wall of the lens barrel 3, achieving a sealing effect on the inner wall of the lens barrel 3, preventing liquids and microorganisms from entering the lens barrel 3 and thus preventing contamination of the lens mounts inside.

[0025] like Figure 3 As shown, the three lens mounts are lens mount 1 4, lens mount 2 5 and lens mount 3 6. Each of the three lens mounts has a steel ball groove at its top. The inside of each steel ball groove is rotatably connected to a steel ball 34 that is adapted to the three guide grooves. The top of the three steel balls 34 is rolledly connected to the inner wall of the stainless steel cover 10.

[0026] When the lens mount rotates, it drives the steel ball 34 inside the steel ball groove to rotate. The rotation of the steel ball 34 causes the steel ball 34 to move along the guide groove. At the same time, the steel ball 34 is in rolling connection with the stainless steel cover 10 to prevent the steel ball 34 from leaving the steel ball groove when it rotates. Thus, when the steel ball 34 moves along the guide groove, the focal length between the lens mounts is adjusted.

[0027] like Figure 2 , Figure 3 and Figure 4 As shown, a driving ring 7 is provided between lens mount 2 5 and lens mount 3 6. The outer wall of the driving ring 7 is provided with an annular groove. A steel ball 2 35 is rotatably connected inside the annular groove. The outer wall of the lens barrel 3 is provided with a through groove 36 that matches the steel ball 2 35. Multiple guide rods 71 ​​are fixedly connected to both sides of the driving ring 7. The multiple guide rods 71 ​​are slidably connected to lens mount 2 5 and lens mount 3 6 respectively.

[0028] The rotation of the driving ring 7 drives the guide rod 71 to rotate, which in turn drives the lens mount 2 5 and the lens mount 3 6 to rotate. Since the inner wall of the steel ball groove on the outer wall of the lens mount 2 5 and the lens mount 3 6 is connected by rolling steel ball 34, the steel ball 34 moves along the guide groove, thereby adjusting the distance between the lens mount 2 5 and the lens mount 3 6, and thus adjusting the distance between the two lens mounts to achieve a suitable focal length.

[0029] like Figure 1 , Figure 5 and Figure 6As shown, the drive device includes two handwheels 11 and 12 that are rotatably connected to the stainless steel cover 10. Three positive magnets 8 and three negative magnets 9 are fixedly connected to the inner walls of both handwheels 11 and 12. The three positive magnets 8 and three negative magnets 9 are fixed in the inner walls of handwheels 11 and 12 at equal intervals.

[0030] When the handwheel is turned, it drives the positive magnet 8 and the negative magnet 9 on the inner wall of the handwheel to rotate. The attraction of the magnets drives the lens mount 4 and the drive ring 7 to rotate, thereby achieving the driving effect. The non-contact driving makes it easy to achieve the sealing effect inside the lens barrel 3.

[0031] like Figure 4 As shown, the outer wall of the stainless steel cover 10 is fixedly connected with a protruding ring 101 that is adapted to the handwheel 11 and the handwheel 2 12.

[0032] like Figure 2 As shown, the three guide grooves are guide groove 1 31, guide groove 2 32 and guide groove 33. The steel ball 1 34, which is rotatably connected to the outer wall of lens mount 1 4, is placed in guide groove 1 31. The steel ball 1 34, which is rotatably connected to the outer wall of lens mount 2 5, is placed in guide groove 2 32. The steel ball 1 34, which is rotatably connected to the outer wall of lens mount 3 6, is placed in guide groove 33. The direction of the three guide grooves is the curve direction simulated by optics.

[0033] like Figure 3 As shown, the lens mount 4 and the driving ring 7 can be made of iron or silicon steel, which facilitates the conduction of magnetic force.

[0034] like Figure 5 and Figure 6 As shown, the three positive magnets 8 and the three negative magnets 9 can be made of neodymium iron boron. The permanent magnetism of neodymium iron boron facilitates long-term magnetic transmission.

[0035] The working principle of this invention is as follows: When using it, first insert the lens tube 3 into the position of the object to be measured. Then, slowly turn the handwheel 11 to drive the lens mount 4 for adjustment, and slowly turn the handwheel 2 12 to drive the lens mount 2 5 and the lens mount 3 6 for adjustment until the field of view is clear. At the same time, pay attention to avoid violent collisions or vibrations during the entire use to avoid damaging the delicate mechanical structure.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-temperature and high-pressure sterilizable endoscope camera, comprising an optical assembly (1) and a camera handle (2) for fixing the optical assembly (1), characterized in that: The optical component (1) includes a lens barrel (3) fixedly connected to the camera handle (2). The lens barrel (3) has three lens mounts inside. The outer wall of the lens barrel (3) has three guide grooves. The three lens mounts can move along the three guide grooves. A stainless steel cover (10) is welded to the outer wall of the lens barrel (3) to seal the lens barrel (3). The outer wall of the stainless steel cover (10) is provided with a drive device to drive the lens mounts to rotate and move along the guide grooves. The three lens mounts are lens mount one (4), lens mount two (5) and lens mount three (6). The top of each of the three lens mounts is provided with a steel ball groove. The inside of each steel ball groove is rotatably connected with a steel ball one (34) that is adapted to the three guide grooves. The top of each of the three steel balls one (34) is rolledly connected to the inner wall of the stainless steel cover (10). A driving ring (7) is provided between the second lens mount (5) and the third lens mount (6). The outer wall of the driving ring (7) is provided with an annular groove. The inner wall of the annular groove is rotatably connected to the second steel ball (35). The outer wall of the lens barrel (3) is provided with a through groove (36) that matches the second steel ball (35). Multiple guide rods (71) are fixedly connected to both sides of the driving ring (7). The multiple guide rods (71) are slidably connected to the second lens mount (5) and the third lens mount (6) respectively. When the guide rods (71) drive the second lens mount (5) and the third lens mount (6) to rotate, the first steel ball (34) of the second lens mount (5) and the third lens mount (6) moves along the guide groove, and the second lens mount (5) and the third lens mount (6) slide with the guide rods (71). The drive device includes two handwheels, one (11) and two (12), which are rotatably connected to the stainless steel cover (10). The inner walls of the handwheels are fixedly connected with three positive magnets (8) and three negative magnets (9). The three positive magnets (8) and three negative magnets (9) are fixed in the inner walls of the handwheels. The lens mount (4) and the drive ring (7) can be made of iron or silicon steel. The three positive magnets (8) and the three negative magnets (9) form a magnetic attraction with the lens mount (4) and the drive ring (7).

2. The endoscope camera resistant to high temperature and high pressure sterilization according to claim 1, characterized in that: The outer wall of the stainless steel cover (10) is fixedly connected with a convex ring (101) that is compatible with handwheel one (11) and handwheel two (12).

3. The endoscope camera resistant to high temperature and high pressure sterilization according to claim 1, characterized in that: The three guide grooves are guide groove one (31), guide groove two (32) and guide groove three (33). The steel ball one (34) rotatably connected to the outer wall of the lens seat one (4) is placed in guide groove one (31), the steel ball one (34) rotatably connected to the outer wall of the lens seat two (5) is placed in guide groove two (32), and the steel ball one (34) rotatably connected to the outer wall of the lens seat three (6) is placed in guide groove three (33). The direction of the three guide grooves is the curve direction simulated by optics.

4. The endoscope camera resistant to high temperature and high pressure sterilization according to claim 1, characterized in that: The three positive magnets (8) and the three negative magnets (9) can be made of neodymium iron boron.

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