Endoscope camera resistant to high-temperature and high-pressure sterilization

Abstract

The invention discloses an endoscope camera resistant to high temperature and high pressure sterilization, 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, and three lens holders are arranged in the lens barrel; the outer wall of the lens barrel is provided with three guide grooves, and the three lens holders can move along the three guide grooves. The three guide grooves are formed in the outer wall of the lens barrel, the three lens holders are arranged in the lens barrel, and the stainless steel cover is fixedly connected to the outer wall of the lens barrel, so that the lens barrel can be integrally closed, liquid and microorganisms are prevented from entering the lens barrel, and the lens holders in the lens barrel are further prevented from being polluted; meanwhile, the driving device is arranged on the outer wall of the stainless steel cover so that the lens bases can rotate along the guide grooves, the distance between the lens bases can be adjusted while rotation is conducted, then the appropriate focal length is achieved, and the problem that the lens cone cannot be sealed is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of endoscope cameras, and in particular to an endoscope camera resistant to high temperature and high pressure sterilization. Background Art

[0002] With the continuous advancement of medical imaging technology, medical cameras, as one of the most 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 must not only provide high-resolution image quality but also be reusable under strict sterilization conditions.

[0003] After searching, the applicant discovered a Chinese patent application titled "Endoscopic Camera and Endoscopic Camera System," with publication number CN112656356A. This patent describes an imaging adjustment process in which a handwheel rotates to drive a pin, which in turn drives an optical component to rotate within a spiral groove, thereby adjusting the focal length. However, the endoscope must be thoroughly sterilized after each operation. The mainstream sterilization solutions 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 mount itself. Basically, it is necessary to reach an IP68 waterproof level to ensure that multiple sterilizations do not affect the cleanliness of the internal optical lenses. However, for example, the optical component in the above-mentioned patent is driven by a handwheel to drive the pin, and the pin drives the optical component to move in the spiral groove to adjust the focal length. Due to the slotting, the optical component leaks at multiple points outside, 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

[0004] The purpose of the present invention is to provide an endoscope camera head that is resistant to high temperature and high pressure sterilization, so as to solve the problem proposed in the above background technology that the optical focal length is adjusted by slotting and moving the pins and optical components in the slot by a handwheel. Since the slot is exposed to the outside, the sealing does not meet the IP68 sealing requirements, resulting in contamination of the lens.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an endoscopic camera head resistant to high temperature and high pressure sterilization, comprising an optical assembly and a camera handle for fixing the optical assembly, the optical assembly comprising a lens barrel fixedly connected to the camera handle, three lens seats being provided inside the lens barrel, three guide grooves being provided on the outer wall of the lens barrel, the three lens seats being movable along the three guide grooves, a stainless steel cover being welded to the outer wall of the lens barrel for sealing the lens barrel, and a driving device being provided on the outer wall of the stainless steel cover for driving the lens seat to rotate and move along the guide grooves.

[0006] Preferably, the three lens seats are lens seat one, lens seat two and lens seat three respectively, and the top of the three lens seats are provided with a steel ball groove, and the inside of the steel ball groove is rotatably connected with a steel ball one that is adapted to the three guide grooves, and the top of the three steel balls one is rollingly connected to the inner wall of the stainless steel cover.

[0007] Preferably, a driving ring is provided between the second lens seat and the third lens seat, the outer wall of the driving ring is provided with a ring groove, the interior of the ring groove is rotatably connected to the second steel ball, the outer wall of the lens barrel is provided with a through groove adapted to the second steel ball, and multiple guide rods are fixedly connected to both sides of the driving ring, and the multiple guide rods are respectively slidably connected to the second lens seat and the third lens seat.

[0008] Preferably, the driving device includes two handwheels 1 and 2 rotatably connected to the stainless steel cover, and the inner walls of the handwheel 1 and the handwheel 2 are fixedly connected with three positive magnets and three negative magnets, and the three positive magnets and the three negative magnets are fixed in the inner walls of the handwheel 1 and the handwheel 2 at equal intervals.

[0009] Preferably, the outer wall of the stainless steel cover is fixedly connected with a convex ring adapted to the handwheel 1 and the handwheel 2.

[0010] Preferably, the three guide grooves are guide groove one, guide groove two and guide groove three, respectively; 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; and the directions of the three guide grooves are all curved directions obtained by optical simulation.

[0011] Preferably, the lens holder 1 and the driving ring may be made of iron or silicon steel.

[0012] Preferably, the three positive magnets and the three negative magnets may be made of neodymium iron boron.

[0013] The technical effects and advantages of the present invention are as follows: the present invention provides three guide grooves on the outer wall of the lens barrel, arranges three lens seats inside the lens barrel, and fixes a stainless steel cover to the outer wall of the lens barrel, so that the lens barrel can be completely sealed, thereby preventing liquid and microorganisms from entering the interior of the lens barrel, thereby preventing the lens seats in the lens barrel from being contaminated. At the same time, the outer wall of the stainless steel cover is provided with a driving device that can enable the lens seats to rotate along the guide grooves, and the distance between the lens seats can be adjusted while rotating, thereby achieving a suitable focal length, thereby solving the problem that the lens barrel cannot be sealed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the lens barrel of the present invention.

[0016] Figure 3 This is a schematic diagram of the front cross-sectional structure of the lens barrel of the present invention. Figure 1 .

[0017] Figure 4 This is a schematic diagram of the front cross-sectional structure of the lens barrel of the present invention. Figure 2 .

[0018] Figure 5 It is a schematic diagram of the three-dimensional structure of the handwheel of the present invention.

[0019] Figure 6 It is a schematic diagram of the front cross-sectional structure of the handwheel of the present invention.

[0020] In the figure: 1. Optical assembly; 2. Camera handle; 3. Lens barrel; 31. Guide groove 1; 32. Guide groove 2; 33. Guide groove 3; 34. Steel ball 1; 35. Steel ball 2; 36. Through groove; 4. Lens seat 1; 5. Lens seat 2; 6. Lens seat 3; 7. Drive ring; 71. Guide rod; 8. Positive magnet; 9. Negative magnet; 10. Stainless steel cover; 101. Convex ring; 11. Handwheel 1; 12. Handwheel 2. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] The present invention provides Figure 1-6 The illustrated embodiment shows an autoclavable, high-temperature sterilization-resistant endoscope camera head, comprising an optical assembly 1 and a camera handle 2 for securing the optical assembly 1. The optical assembly 1 comprises a lens barrel 3 fixedly connected to the camera handle 2. The lens barrel 3 has three lens holders disposed therein, and the outer wall of the lens barrel 3 has three guide grooves along which the three lens holders can move. A stainless steel cover 10 enclosing the lens barrel 14 is welded to the outer wall of the lens barrel 3, and a drive device is disposed on the outer wall of the stainless steel cover 10 for rotating and moving the lens holders along the guide grooves. In response to the problem that the existing optical component 1 adjusts the optical focal length by slotting and using a handwheel to drive the pin and the optical component 1 to move in the slot, the slot is exposed to the outside, so that the seal cannot meet the IP68 sealing requirement, resulting in contamination of the lens, the present invention designs an optical component 1, three lens seats are arranged on the lens barrel 3 and inside the lens barrel 3, three guide grooves are opened on the outer wall of the lens barrel 3, and the three lens seats are driven by a driving device to rotate, so that the lens seats can move along the three guide grooves to adjust the focal length, thereby achieving focal length adjustment. At the same time, the outer wall of the lens barrel 3 is fixedly connected to a stainless steel cover 10 to achieve a sealing effect on the inner wall of the lens barrel 3, preventing liquid and microorganisms from entering the interior of the lens barrel 3, and thus preventing the lens seat in the lens barrel 3 from being contaminated.

[0023] like Figure 3 As shown, the three lens holders are lens holder 1 4, lens holder 2 5 and lens holder 3 6. The top of each of the three lens holders is provided with a steel ball groove. The interior of each of the steel ball grooves is rotatably connected to a steel ball 1 34 that matches the three guide grooves. The top of each of the three steel balls 1 34 is rollingly connected to the inner wall of the stainless steel cover 10. When the lens holder rotates, the steel ball 134 inside the steel ball groove is driven to rotate. The rotation of the steel ball 134 causes the steel ball 134 to move along the guide groove. At the same time, the steel ball 134 is rollingly connected to the stainless steel cover 10 to prevent the steel ball 134 from escaping from the steel ball groove when rotating. Then, when the steel ball 134 moves along the guide groove, the focal length between the lens holders is adjusted.

[0024] like Figure 2 、 Figure 3 and Figure 4 As shown, a driving ring 7 is provided between the second lens holder 5 and the third lens holder 6. The outer wall of the driving ring 7 is provided with an annular groove, and a second steel ball 35 is rotatably connected inside the annular groove. The outer wall of the lens barrel 3 is provided with a through groove 36 adapted to the second steel ball 35. A plurality of guide rods 71 are fixedly connected to both sides of the driving ring 7. The plurality of guide rods 71 are slidably connected to the second lens holder 5 and the third lens holder 6 respectively. The rotation of the driving ring 7 can drive the guide rod 71 to rotate, and the rotation of the guide rod 71 can drive the lens holder 2 5 and the lens holder 3 6 to rotate. Since the inner walls of the steel ball grooves on the outer walls of the lens holder 2 5 and the lens holder 3 6 are rollingly connected with steel balls 1 34, the steel balls 1 34 move along the guide grooves to achieve the distance between the lens holder 2 5 and the lens holder 3 6, and then the distance between the two lens holders is adjusted in one step to achieve a suitable focal length.

[0025] like Figure 1 、 Figure 5 and Figure 6As shown, the driving device includes two handwheels 11 and 12 that are rotatably connected to the stainless steel cover 10. The inner walls of the handwheels 11 and 12 are fixedly connected with three positive magnets 8 and three negative magnets 9. The three positive magnets 8 and the three negative magnets 9 are fixed in the inner walls of the handwheels 11 and 12 at equal intervals. When the hand wheel rotates, the positive magnet 8 and the negative magnet 9 on the inner wall of the hand wheel are driven to rotate, and the attraction of the magnets drives the lens holder 4 and the driving ring 7 to rotate, thereby achieving the driving effect, and the non-contact driving facilitates the sealing effect inside the lens barrel 3.

[0026] like Figure 4 As shown, a convex ring 101 adapted to the hand wheel 11 and the hand wheel 2 12 is fixedly connected to the outer wall of the stainless steel cover 10 .

[0027] 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 rotatably connected to the outer wall of lens holder 1 4 is placed in guide groove 1 31, the steel ball 1 34 rotatably connected to the outer wall of lens holder 2 5 is placed in guide groove 2 32, and the steel ball 1 34 rotatably connected to the outer wall of lens holder 3 6 is placed in guide groove 3 33. The directions of the three guide grooves are all curved directions obtained by optical simulation.

[0028] like Figure 3 As shown, the lens holder 1 4 and the driving ring 7 can be made of iron or silicon steel, which facilitates the conduction of magnetic force.

[0029] 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, and the permanent magnetism of neodymium iron boron facilitates long-term magnetic transmission.

[0030] The working principle of the present invention is as follows: when in use, first insert the lens barrel 3 correctly into the position of the object to be measured, then slowly turn the hand wheel 11 to drive the lens holder 1 4 to adjust, and slowly turn the hand wheel 2 12 to drive the lens holder 2 5 and the lens holder 3 6 to adjust until the field of view is clear. At the same time, pay attention to avoid violent collision or vibration during the entire use period to avoid damaging the delicate mechanical structure.

[0031] Finally, it should be noted that the above 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 aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An endoscope camera head resistant to high temperature and high pressure sterilization, comprising an optical component (1) and a camera head handle (2) for fixing the optical component (1), characterized in that: The optical assembly (1) comprises a lens barrel (3) fixedly connected to a camera handle (2), three lens seats are provided inside the lens barrel (3), three guide grooves are provided on the outer wall of the lens barrel (3), and the three lens seats can move along the three guide grooves. A stainless steel cover (10) that closes the lens barrel (3) is welded to the outer wall of the lens barrel (3), and a driving device for driving the lens seats to rotate and move along the guide grooves is provided on the outer wall of the stainless steel cover (10).

2. The high temperature and high pressure sterilization resistant endoscopic camera head according to claim 1, characterized in that: The three lens seats are lens seat one (4), lens seat two (5) and lens seat three (6), and the tops of the three lens seats are provided with steel ball grooves, and the interiors of the steel ball grooves are rotatably connected with steel balls one (34) adapted to the three guide grooves, and the tops of the three steel balls one (34) are rollingly connected to the inner wall of the stainless steel cover (10).

3. The high temperature and high pressure sterilization resistant endoscopic camera head according to claim 2, characterized in that: A driving ring (7) is provided between the lens seat 2 (5) and the lens seat 3 (6), the outer wall of the driving ring (7) is provided with a ring groove, the interior of the ring 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) adapted to the second steel ball (35), and a plurality of guide rods (71) are fixedly connected to both sides of the driving ring (7), and the plurality of guide rods (71) are respectively slidably connected to the lens seat 2 (5) and the lens seat 3 (6).

4. The high temperature and high pressure sterilization resistant endoscopic camera head according to claim 1, characterized in that: The driving device comprises two handwheels (11) and handwheel (12) rotatably connected to the stainless steel cover (10), and the inner walls of the handwheels (11) and handwheel (12) are fixedly connected with three positive magnets (8) and three negative magnets (9), and the three positive magnets (8) and three negative magnets (9) are fixed in the inner walls of the handwheels (11) and handwheel (12) at equal intervals.

5. The high temperature and high pressure sterilization resistant endoscope camera head according to claim 1, characterized in that: The outer wall of the stainless steel cover (10) is fixedly connected to a convex ring (101) adapted to the hand wheel 1 (11) and the hand wheel 2 (12).

6. The high temperature and high pressure sterilization resistant endoscope camera head according to claim 2, 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 the guide groove one (31), the steel ball one (34) rotatably connected to the outer wall of the lens seat two (5) is placed in the 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 the guide groove three (33). The directions of the three guide grooves are all curved directions obtained by optical simulation.

7. The high temperature and high pressure sterilization resistant endoscope camera head according to claim 2, characterized in that: The lens holder 1 (4) and the driving ring (7) can be made of iron or silicon steel.

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

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