A three-dimensional laparoscope and corresponding method of installation

Abstract

The application discloses a three-dimensional laparoscope and a corresponding mounting method, wherein the three-dimensional laparoscope comprises a double-optical-axis inner tube assembly, a first reflecting prism fixing seat assembly, a second reflecting prism fixing seat assembly, a first ocular lens and a second ocular lens; in a first optical axis direction, the first reflecting prism fixing seat assembly and the first ocular lens are sequentially arranged; in a second optical axis direction, the second reflecting prism fixing seat assembly and the second ocular lens are sequentially arranged; the first reflecting prism fixing seat is connected with the double-optical-axis inner tube assembly through gluing, and is connected with the first ocular lens through gluing; the second reflecting prism fixing seat is connected with the double-optical-axis inner tube assembly through gluing, and is connected with the second ocular lens through gluing, and is used for being bonded and fixed in a state of being adjusted to position by using adhesive when imaging is adjusted to position. The application has the effect of facilitating assembly and debugging.

Description

Technical Field

[0001] This application relates to the field of endoscopy technology, and in particular to a three-dimensional laparoscopic endoscope and a corresponding installation method. Background Technology

[0002] Laparoscopic surgery is a core technique in modern minimally invasive surgery. It involves creating an operating channel through a small abdominal incision, and under CO2 pneumoperitoneum, using a laparoscope to transmit real-time images of the abdominal cavity to a monitor, guiding the surgeon through the procedure. The advent of 3D laparoscopes has further improved surgical precision. By generating stereoscopic vision through a dual-light-path system, it allows surgeons to accurately determine tissue depth and spatial relationships, significantly reducing the risk of accidental vascular injury and nerve damage.

[0003] Compared to a conventional laparoscope, a 3D laparoscope, with its dual optical paths (left and right), needs to be housed in a space similar to that of a conventional laparoscope, resulting in a compact structure and higher installation difficulty. The optical paths of the two eyes require strict matching and alignment, which is challenging to adjust. Improper adjustment can lead to blurred images. Furthermore, mismatch between the two optical paths can cause misalignment of the left and right eye images, leading to dizziness for doctors during clinical use.

[0004] Patent CN112155498A mentions a three-dimensional endoscope and camera, in which left and right imaging lenses are fixed inside the camera by set screws, and the imaging position and matching of the left and right eyes are adjusted by adjusting the set screws.

[0005] US5527263 patent mentions an endoscope that can adjust the matching of the left and right optical axes. The optical axis adjustment is achieved by adjusting the position and angle of the aperture, lens, and reflecting prism by adjusting multiple screws.

[0006] However, after repeated testing of the above scheme, its complex structure involving optical paths proved difficult to debug, requiring highly precise manual operation and hindering efficiency in installation and debugging. Therefore, how to design a 3D endoscope to facilitate assembly and debugging is a pressing issue that needs to be addressed. Summary of the Invention

[0007] In view of this, the purpose of this application is to provide a three-dimensional laparoscopic endoscope and a corresponding installation method, which can facilitate assembly and debugging.

[0008] This application provides a three-dimensional laparoscopic endoscope, including a dual-optical-axis inner tube assembly, a first reflecting prism fixing seat assembly, a second reflecting prism fixing seat assembly, a first eyepiece, and a second eyepiece; The first reflecting prism mounting assembly includes a first field stop, a first reflecting prism, and a first reflecting prism mounting base; the first field stop and the first reflecting prism are fixedly mounted on the first reflecting prism mounting base; The second reflecting prism mounting assembly includes a second field stop, a second reflecting prism, and a second reflecting prism mounting base; the second field stop and the second reflecting prism are fixedly mounted on the second reflecting prism mounting base; In the first optical axis direction of the dual optical axis inner tube assembly, a first reflecting prism fixing seat assembly and a first eyepiece are sequentially arranged; In the second optical axis direction of the dual optical axis inner tube assembly, a second reflecting prism mounting assembly and a second eyepiece are sequentially arranged; The first reflecting prism mounting base is directly or indirectly glued to the dual optical axis inner tube assembly and glued to the first eyepiece, which is used to glue and fix it in the adjusted state when the imaging corresponding to the first optical axis is adjusted in place. The second reflective prism mounting base is directly or indirectly glued to the dual-optical-axis inner tube assembly and to the second eyepiece, and is used to glue and fix it in the adjusted state when the imaging of the second optical axis is adjusted to the correct position.

[0009] Optionally, the three-dimensional laparoscopic endoscope may further include a fixation ring; The fixing ring is sleeved and fixed to the periphery of the dual-optical-axis inner tube assembly, and the top surface of the fixing ring extends beyond the top surface of the dual-optical-axis inner tube assembly; the first reflecting prism fixing seat (220) and the second reflecting prism fixing seat (320) are both adhesively bonded to the top surface of the fixing ring for indirect adhesive connection with the dual-optical-axis inner tube assembly.

[0010] Optionally, the top surface of the fixing ring is recessed with an annular recess; a fixing ring adhesive groove is formed between the annular recess and the first and second reflecting prism fixing seats to accommodate adhesive for bonding.

[0011] Optionally, the bottom surface of the first reflecting prism mounting base is recessed with a first stepped hole, and a first waterproof platform is protruding around the first stepped hole; the first field stop is bonded to the first stepped hole. The bottom surface of the second reflecting prism mounting base is recessed with a second stepped hole, and a second waterproof platform is protruding around the second stepped hole; the second field aperture is bonded to the second stepped hole.

[0012] Optionally, the first reflective prism mounting base and the second reflective prism mounting base are arranged adjacent to each other; the first reflective prism mounting base and the second reflective prism mounting base are respectively provided with a first square through hole and a second square through hole on their adjacent two sides. The first reflecting prism is installed in the first square through hole and is tightened and locked by a set screw passing through the first reflecting prism fixing seat; The second reflecting prism is installed in the second square through hole and is locked in place by a set screw passing through the second reflecting prism mounting base; Both the first and second reflecting prisms are rectangular parallelepipeds with beveled surfaces, and are composed of a parallel reflector and an auxiliary body; the parallel reflector is used to reflect light.

[0013] Optionally, the adjacent surfaces of the first and second reflective prism holders are spaced apart to form an active space. The first and second reflective prism mounting bases have a first edge recess and a second edge recess respectively recessed on their adjacent sides. A fixing seat adhesive groove is formed between the first edge recess and the second edge recess. The fixing seat adhesive groove is connected to the movable space and contains adhesive to bond the first reflective prism fixing seat and the second reflective prism fixing seat together.

[0014] Optionally, the top surface of the first reflective prism mounting base is provided with a first mounting cylinder; The first eyepiece is inserted into the first mounting cylinder. The exposed part of the first eyepiece has a first mounting protrusion on its circumferential surface. The first mounting protrusion and the open end face of the first mounting cylinder form a first eyepiece glue groove for accommodating glue and bonding. The top surface of the second reflective prism mounting base is provided with a second mounting cylinder; The second eyepiece is inserted into the second mounting cylinder. The exposed part of the second eyepiece has a second mounting protrusion on its circumferential surface. A second eyepiece adhesive groove is formed between the second mounting protrusion and the open end face of the second mounting cylinder to accommodate adhesive for bonding.

[0015] Optionally, a first adjustment space is provided between the inner wall of the first mounting cylinder and the first eyepiece insertion part; A second adjustment space is provided between the inner wall of the second mounting cylinder and the second eyepiece insertion part.

[0016] This application provides a method for installing a three-dimensional laparoscopic endoscope, applied to the aforementioned three-dimensional laparoscopic endoscope; including the following steps: Fixed dual-optical-axis inner tube assembly; Along the direction of the first optical axis, the first reflecting prism mounting assembly and the first eyepiece are arranged sequentially; Along the direction of the second optical axis, the second reflecting prism mounting assembly and the second eyepiece are arranged sequentially; The first reflecting prism mounting assembly, the first eyepiece, the second reflecting prism mounting assembly, and the second eyepiece are respectively held by four clamps; wherein the four clamps are respectively mounted on corresponding optical slides; Adjust the relative positions of the first reflecting prism mounting assembly, the first eyepiece, the second reflecting prism mounting assembly, and the second eyepiece until the two imaging points corresponding to the first optical axis and the second optical axis are properly adjusted. Maintain the relative positions of the first reflecting prism mounting assembly, the first eyepiece, the second reflecting prism mounting assembly, and the second eyepiece; The dual-optical-axis inner tube assembly, the first reflective prism mounting assembly, the second reflective prism mounting assembly, the first eyepiece, and the second eyepiece are fixedly connected by adhesive.

[0017] This application provides another method for installing a three-dimensional laparoscopic endoscope, applied to the aforementioned three-dimensional laparoscopic endoscope; including the following steps: Fix the dual-optical-axis inner tube assembly and place the fixing ring around the periphery of the dual-optical-axis inner tube assembly; Along the direction of the first optical axis, the first reflecting prism mounting assembly and the first eyepiece are arranged sequentially; Along the direction of the second optical axis, the second reflecting prism mounting assembly and the second eyepiece are arranged sequentially; The first reflecting prism mounting assembly, the first eyepiece, the second reflecting prism mounting assembly, and the second eyepiece are respectively held by four clamps; wherein the four clamps are respectively mounted on corresponding optical slides; Adjust the relative positions of the first reflecting prism mounting assembly, the first eyepiece, the second reflecting prism mounting assembly, and the second eyepiece until the first optical axis and the imaging corresponding to the first optical axis are properly adjusted. Maintain the relative positions of the first reflecting prism mounting assembly, the first eyepiece, the second reflecting prism mounting assembly, and the second eyepiece; The fixing ring is moved and brought closer to the first reflecting prism fixing assembly and the second reflecting prism fixing assembly, and then fixedly connected to the dual optical axis inner tube assembly; The fixing ring, the first reflecting prism fixing assembly, the second reflecting prism fixing assembly, the first eyepiece, and the second eyepiece are fixedly connected by glue.

[0018] This application provides a three-dimensional laparoscopic endoscope and its corresponding installation method. First, a first field-of-view aperture and a first reflecting prism are assembled into a first reflecting prism mounting assembly; then, a second field-of-view aperture and a second reflecting prism are assembled into a second reflecting prism mounting assembly. Next, the dual-optical-axis inner tube assembly, the first reflecting prism mounting assembly, and the first eyepiece are fixed with adhesive. Since adhesive bonding does not require a dedicated installation structure, the relative positions can be locked by adhesive curing after each component is calibrated. This structure has a compact layout, allowing for convenient and precise adjustment of the imaging effects of the left and right eyepieces of the three-dimensional laparoscopic endoscope. During the assembly and adjustment phase, calibration can be completed using a standard three-dimensional camera, ensuring the relative positional relationship matches a universal standard camera. Subsequent users can directly select a standard three-dimensional camera for normal operation without additional matching and adjustment. Therefore, the three-dimensional laparoscopic endoscope provided in this embodiment is easy to assemble and adjust. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the three-dimensional laparoscopic rod endoscope of this application.

[0021] Figure 2 for Figure 1 The diagram shows the exploded structure of a three-dimensional laparoscope rod endoscope.

[0022] Figure 3 for Figure 1 The diagram shows the structure of the first reflecting prism fixing seat assembly 200 in the three-dimensional laparoscope rod endoscope.

[0023] Figure 4 for Figure 1 The diagram shows the structure of the second reflecting prism fixing seat assembly 300 in the three-dimensional laparoscope rod endoscope.

[0024] Figure 5 for Figure 1 A schematic cross-sectional view along section AA.

[0025] Figure 6 for Figure 5 Enlarged view of the area within the dashed box.

[0026] Figure 7 for Figure 1 The diagram shows a partial structural schematic of a three-dimensional laparoscope rod.

[0027] Figure 8 for Figure 7 An enlarged schematic diagram of the dotted coil portion.

[0028] Figure 9 This is a schematic diagram of the assembly process for the first embodiment of the installation method of the three-dimensional laparoscope of this application.

[0029] Figure 10 This is a schematic diagram of the assembly process for the second embodiment of the installation method of the three-dimensional laparoscope of this application.

[0030] Reference numerals: 100-Dual optical axis inner tube assembly, 200-First reflecting prism mounting assembly, 210-First field stop, 220-First reflecting prism mounting base, 221-First stepped hole, 222-First waterproof platform, 223-First square through hole, 224-Set screw, 225-First edge countersunk platform, 226-First mounting cylinder, 230-First reflecting prism, 231-Parallel reflector, 232-Auxiliary body, 300-Second reflecting prism mounting assembly, 310-Second field stop, 320-Second reflecting prism mounting base, 321-Second stepped hole, 322-Second waterproof platform, 323-Second square through hole, 324-Set screw, 32 5-Second edge recessed platform, 326-Second mounting cylinder, 330-Second reflecting prism, 331-Parallel reflector, 332-Auxiliary body, 410-First eyepiece, 411-First mounting protrusion, 420-Second eyepiece, 421-Second mounting protrusion, 510-First optical axis, 520-Second optical axis, 600-Fixing ring, 610-Annular recessed platform, 620-Screw, 710-Outer tube assembly, 720-Fixing seat adhesive groove, 730-Movement space, 741-First eyepiece adhesive groove, 742-Second eyepiece adhesive groove, 750-Fixing ring adhesive groove, 751-First adjustment space, 752-Second adjustment space, 760-Eyepiece cover assembly, 770-Nut. Detailed Implementation

[0031] The specific embodiments of this application will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely a part of the embodiments of this application, and not all of them. Based on the description of this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0032] In the description of this application, unless otherwise expressly specified and limited, the terms "set," "install," "connect," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms based on the specific circumstances.

[0033] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product is usually placed in during use. They are used only for the convenience of description and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] The terms “first,” “second,” “third,” etc., are merely used to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0035] The terms “include,” “contain,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0036] This application provides an embodiment of a three-dimensional laparoscopic rod endoscope.

[0037] Please refer to Figure 1 The three-dimensional laparoscopic endoscope includes an outer tube assembly 710 and an eyepiece cover assembly 760.

[0038] Please refer to Figure 2 and Figure 5 The three-dimensional laparoscopic endoscope also includes a dual-axis inner tube assembly 100. The dual-axis inner tube assembly 100 is fixed to the outer tube assembly 710 by a nut 770. The eyepiece cover assembly 760 is fixed to the outer tube assembly 710 by a threaded connection.

[0039] Please refer to Figure 2 The three-dimensional laparoscopic endoscope further includes: a first reflecting prism mounting assembly 200, a second reflecting prism mounting assembly 300, a first eyepiece 410, and a second eyepiece 420.

[0040] Please refer to the following: Figure 3 , Figure 5 and Figure 6The first reflecting prism mounting assembly 200 includes a first field stop 210, a first reflecting prism 230, and a first reflecting prism mounting base 220; the first field stop 210 and the first reflecting prism 230 are fixedly mounted on the first reflecting prism mounting base 220.

[0041] Please refer to the following: Figure 4 , Figure 5 and Figure 6 The second reflecting prism mounting assembly 300 includes a second field stop 310, a second reflecting prism 330, and a second reflecting prism mounting base 320; the second field stop 310 and the second reflecting prism 330 are fixedly mounted on the second reflecting prism mounting base 320.

[0042] Please refer to the following: Figure 5 , Figure 6 In the direction of the first optical axis 510 of the dual-optical-axis inner tube assembly 100, a first reflecting prism mounting base assembly 200 and a first eyepiece 410 are arranged in sequence; in the direction of the second optical axis 520 of the dual-optical-axis inner tube assembly 100, a second reflecting prism mounting base assembly 300 and a second eyepiece 420 are arranged in sequence.

[0043] Please refer to Figure 7 and Figure 8 The first reflective prism mounting base 220 is directly or indirectly glued to the dual optical axis inner tube assembly 100, and is also glued to the first eyepiece 410, for use in attaching and fixing the first optical axis 510 to the adjusted state when the imaging is adjusted in place.

[0044] The second reflecting prism mounting base 320 is directly or indirectly glued to the dual optical axis inner tube assembly 100, and is also glued to the second eyepiece 420, for use in attaching and fixing the second optical axis 520 to the adjusted state when the imaging is properly aligned.

[0045] The three-dimensional laparoscopic endoscope provided in this embodiment is assembled by first combining the first field-of-view aperture 210 and the first reflecting prism 230 into a first reflecting prism mounting assembly 200; then combining the second field-of-view aperture 310 and the second reflecting prism 330 into a second reflecting prism mounting assembly 300; and finally fixing the dual-optical-axis inner tube assembly 100, the first reflecting prism mounting assembly 200, and the first eyepiece 410 with adhesive. Since adhesive bonding does not require a dedicated installation structure, the relative positions can be locked by adhesive curing after each component is calibrated. This structure has a compact layout, allowing for convenient and precise adjustment of the imaging effects of the left and right eyepieces of the three-dimensional laparoscopic endoscope. During the assembly and adjustment phase, calibration can be completed using a standard three-dimensional camera, ensuring the relative positional relationship matches a universal standard camera. Subsequent users can directly select a standard three-dimensional camera for normal operation without additional matching and adjustment. Therefore, the three-dimensional laparoscopic endoscope provided in this embodiment is easy to assemble and adjust.

[0046] Please refer to Figure 2 Furthermore, in this embodiment, the three-dimensional laparoscopic endoscope also includes a fixation ring 600.

[0047] The retaining ring 600 is sleeved and fixed to the periphery of the dual-optical-axis inner tube assembly 100, and the top surface of the retaining ring 600 extends beyond the top surface of the dual-optical-axis inner tube assembly 100. The first reflecting prism mounting base 220 and the second reflecting prism mounting base 320 are both adhesively bonded to the retaining ring 600 for indirect adhesive connection with the dual-optical-axis inner tube assembly 100. Specifically, the retaining ring 600 is fixedly connected to the dual-optical-axis inner tube assembly 100 by two screws 620 penetrating the wall of the retaining ring 600, which, after tightening, press against the dual-optical-axis inner tube assembly 100 to complete the assembly and fixation. In other embodiments, other fixing methods, such as adhesive bonding, can also be used.

[0048] In this embodiment, a fixing ring 600 is fitted onto the dual-optical-axis inner tube assembly 100, and the height of its top surface protruding can be adjusted as needed, such as 1mm, 2mm, or 3mm. During mass production, after imaging debugging, the relative positions of the first reflecting prism holder 220, the second reflecting prism holder 320, and the dual-optical-axis inner tube assembly 100 are different for different three-dimensional laparoscopic endoscopes. The fixing ring 600 can adapt to this constantly changing relative position and complete the fixed connection of the three components. This design makes the parts more regularly shaped, thus reducing manufacturing difficulty; furthermore, the fit dimensions between the fixing ring 600 and the outer periphery of the dual-optical-axis inner tube assembly 100, as well as its top surface and the two holders, are easy to control and inspect, effectively reducing assembly difficulty.

[0049] Of course, in other embodiments, it is not necessary to additionally provide a fixing ring 600. Instead, the bottoms of the first reflecting prism fixing seat 220 and the second reflecting prism fixing seat 320 are respectively provided with semi-annular wall surfaces, and the two semi-annular wall surfaces are joined together to form an annular structure similar to the fixing ring 600 (e.g., Figure 10 As shown in section 2 of the diagram, the inner tube assembly 100 is then bonded to its outer periphery with adhesive. This is a direct adhesive bonding method. Regarding the adhesive gap between adjacent surfaces, the following methods can be used: a gap of 0–0.05 mm can use low-viscosity UV adhesive; a gap of 0.05–0.15 mm can use medium-viscosity UV adhesive; and a gap of 0.15–0.30 mm can use high-viscosity / thixotropic UV adhesive. Of course, other types of adhesives can also be used, such as epoxy structural adhesives, instant adhesives, and silicone rubber. If the gap is too large, other special adhesives can be used to fill it, or gaskets can be added.

[0050] Please refer to Figure 2 , Figure 6 and Figure 8 Furthermore, in this embodiment, the top surface of the fixing ring 600 is recessed with an annular recess 610; a fixing ring adhesive groove 750 is formed between the annular recess 610 and the first reflecting prism fixing seat 220 and the second reflecting prism fixing seat 320 for accommodating adhesive for bonding. In this embodiment, by providing the fixing ring adhesive groove 750, it is convenient to fix two adjacent parts with adhesive.

[0051] Please refer to Figure 3 and Figure 4 Furthermore, in this embodiment, the bottom surface of the first reflective prism fixing base 220 is recessed with a first stepped hole 221, and a first waterproof platform 222 is protruding around the first stepped hole 221; the first field aperture 210 is bonded to the first stepped hole 221.

[0052] The bottom surface of the second reflecting prism mounting base 320 is recessed with a second stepped hole 321, and a second waterproof platform 322 is protruding around the second stepped hole 321; the second field aperture 310 is bonded to the second stepped hole 321.

[0053] In this embodiment, stepped holes are provided on the bottom surfaces of the two fixed seats, which facilitates the positioning and installation of the aperture; the waterproof platform can prevent glue from flowing into the stepped holes.

[0054] Please refer to Figure 3 and Figure 4Furthermore, in this embodiment, the first reflecting prism mounting base 220 and the second reflecting prism mounting base 320 are arranged adjacent to each other; the first reflecting prism mounting base 220 and the second reflecting prism mounting base 320 are respectively provided with a first square through hole 223 and a second square through hole 323 on their adjacent two sides.

[0055] The first reflecting prism 230 is installed in the first square through hole 223 and is locked in place by a set screw 224 passing through the first reflecting prism mounting base 220. The second reflecting prism 330 is installed in the second square through hole 323 and is locked in place by a set screw 324 passing through the second reflecting prism mounting base 320.

[0056] Both the first reflecting prism 230 and the second reflecting prism 330 are rectangular parallelepipeds with bevels, and are composed of parallel reflectors 231 and 331 and auxiliary bodies 232 and 332; wherein the parallel reflectors 231 and 331 are used to reflect light.

[0057] In this embodiment, the two reflecting prisms are rectangular parallelepipeds with beveled surfaces, which facilitates stable insertion into the corresponding mounting bases, eliminating the need for complex alignment and thus achieving a convenient assembly effect.

[0058] Please refer to Figure 8 Furthermore, in this embodiment, the adjacent surfaces of the first reflecting prism holder 220 and the second reflecting prism holder 320 are spaced apart to form an active space 730.

[0059] Please refer to Figure 3 , Figure 4 and Figure 8 The first reflective prism holder 220 and the second reflective prism holder 320 are respectively recessed on their adjacent sides, with a first edge recess 225 and a second edge recess 325.

[0060] A fixing seat adhesive groove 720 is formed between the first edge recess 225 and the second edge recess 325. The fixing seat adhesive groove 720 is connected to the movable space 730 and contains adhesive to bond the first reflecting prism fixing seat 220 and the second reflecting prism fixing seat 320 together.

[0061] In this embodiment, the movable space 730 provides ample room for the two fixed bases to move during imaging adjustments, facilitating the completion of the adjustments. Furthermore, the adhesive groove 720 on the fixed bases accommodates the adhesive, making it easy to bond the two fixed bases together.

[0062] Please refer to Figure 6 and Figure 8 Furthermore, in this embodiment, the top surface of the first reflective prism fixing base 220 is provided with a first mounting cylinder 226.

[0063] The first eyepiece 410 is inserted into the first mounting cylinder 226. The exposed part of the first eyepiece 410 has a first mounting protrusion 411 protruding on its circumferential surface. The first mounting protrusion 411 and the open end face of the first mounting cylinder 226 form a first eyepiece glue groove 741 for accommodating glue for adhesive bonding.

[0064] The top surface of the second reflective prism mounting base 320 is provided with a second mounting cylinder 326.

[0065] The second eyepiece 420 is inserted into the second mounting cylinder 326. The circumferential surface of the exposed portion of the second eyepiece 420 is provided with a second mounting protrusion 421. A second eyepiece adhesive groove 742 is formed between the second mounting protrusion 421 and the open end face of the second mounting cylinder 326 to accommodate adhesive for bonding.

[0066] In this embodiment, by providing two eyepiece adhesive grooves, it is easy to glue the eyepiece and the mounting base together.

[0067] Please refer to Figure 6 Furthermore, in this embodiment, a first adjustment space 751 is provided between the inner wall of the first mounting cylinder 226 and the insertion portion of the first eyepiece 410.

[0068] A second adjustment space 752 is provided between the inner wall of the second mounting cylinder 326 and the insertion part of the second eyepiece 420.

[0069] This embodiment provides two adjustment spaces, allowing the two eyepieces to move freely during imaging adjustments, thus facilitating the completion of the adjustments.

[0070] Please refer to Figure 9 This application provides a first embodiment of a method for installing a three-dimensional laparoscopic endoscope, which will be illustrated using the aforementioned three-dimensional laparoscopic endoscope as an example.

[0071] The installation method of the three-dimensional laparoscopic endoscope includes: Step 1: Fix the dual-optical-axis inner tube assembly 100 and fit the retaining ring 600 around the periphery of the dual-optical-axis inner tube assembly 100. For example... Figure 9 Parts 1 and 2 of the Chinese standard.

[0072] Step 2: Along the direction of the first optical axis 510, arrange the first reflecting prism mounting assembly 200 and the first eyepiece 410 sequentially. Along the direction of the second optical axis 520, arrange the second reflecting prism mounting assembly 300 and the second eyepiece 420 sequentially. (The text repeats itself here.) Figure 9 Part 3 of the standard number.

[0073] Step 3: The first reflecting prism mounting assembly 200, the first eyepiece 410, the second reflecting prism mounting assembly 300, and the second eyepiece 420 are respectively clamped by four clamps; wherein the four clamps are respectively mounted on the corresponding optical slides.

[0074] Step 4: Adjust the relative positions of the first reflecting prism mounting assembly 200, the first eyepiece 410, the second reflecting prism mounting assembly 300, and the second eyepiece 420 until the imaging of the first optical axis 510 and the second optical axis 520 is properly adjusted.

[0075] Step 5: Maintain the relative positions of the first reflecting prism mounting assembly 200, the first eyepiece 410, the second reflecting prism mounting assembly 300, and the second eyepiece 420.

[0076] Step 6: Move the fixing ring 600 closer to the first reflecting prism fixing assembly 200 and the second reflecting prism fixing assembly 300, and then fix it to the dual optical axis inner tube assembly 100. Figure 9 Part 4 (reference number). The approach here refers to a slight gap or overlap to prevent the retaining ring 600 from affecting the precise position of the field stop. Since the bottom surfaces of the two retaining assemblies may not be coplanar after adjustment, the retaining ring 600 only needs to overlap with one of the retaining assemblies.

[0077] Step 7: Secure the fixing ring 600, the first reflecting prism fixing assembly 200, the second reflecting prism fixing assembly 300, the first eyepiece 410, and the second eyepiece 420 together with glue.

[0078] The assembly scheme used in this embodiment is fixed by the dual-optical-axis inner tube assembly 100, requiring adjustment of only two sets of fixing base assemblies and two eyepieces, totaling four parts; each part has three degrees of freedom, for a total of 12 degrees of freedom for adjustment. The use of fixtures and optical slides to control these parts further reduces the difficulty of adjustment.

[0079] This structure also has several assembly advantages: (1) The field stop and eyepiece positions can be adjusted independently, providing high flexibility in adjustment; (2) The field stop, reflecting prism and eyepiece are fixed by adhesive bonding, eliminating the need for complex mechanical structures. This not only simplifies the overall structure but also makes the calibration work more convenient and accurate.

[0080] Actual testing has verified that even within the confined space of a 3D laparoscopic endoscope, this assembly method can significantly improve the efficiency of manual assembly.

[0081] Please refer to Figure 10This application discloses a second embodiment of a method for installing a three-dimensional laparoscopic endoscope. Based on the aforementioned three-dimensional laparoscopic endoscope, the first reflecting prism mounting base and the dual-optical-axis inner tube assembly are directly glued together. Specifically, the bottoms of the first and second reflecting prism mounting bases are respectively provided with semi-annular walls, which are joined to form a ring-like structure similar to a fixing ring. Figure 10 As shown in label 2.

[0082] The installation method of the three-dimensional laparoscopic endoscope includes: Step 1: Secure the dual-optical-axis inner tube assembly. (For example...) Figure 10 As shown in label 1.

[0083] Step 2: Along the direction of the first optical axis 510, arrange the first reflecting prism mounting assembly 200 and the first eyepiece 410 sequentially. Along the direction of the second optical axis 520, arrange the second reflecting prism mounting assembly 300 and the second eyepiece 420 sequentially. (The text repeats itself here.) Figure 10 As shown in label 2.

[0084] Step 3: The first reflecting prism mounting assembly 200, the first eyepiece 410, the second reflecting prism mounting assembly 300, and the second eyepiece 420 are respectively clamped by four clamps; wherein the four clamps are respectively mounted on the corresponding optical slides.

[0085] Step 4: Adjust the relative positions of the first reflecting prism mounting assembly 200, the first eyepiece 410, the second reflecting prism mounting assembly 300, and the second eyepiece 420 until the two imaging points corresponding to the first optical axis 510 and the second optical axis 520 are in place.

[0086] Step 5: Maintain the relative positions of the first reflecting prism mounting assembly 200, the first eyepiece 410, the second reflecting prism mounting assembly 300, and the second eyepiece 420.

[0087] Step 6: Securely connect the dual optical axis inner tube assembly (100), the first reflective prism mounting assembly 200, the second reflective prism mounting assembly 300, the first eyepiece 410, and the second eyepiece 420 with adhesive.

[0088] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0089] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the appended claims.

Claims

1. A three-dimensional laparoscopic endoscope, characterized in that, It includes a dual-optical-axis inner tube assembly (100), a first reflecting prism mounting assembly (200), a second reflecting prism mounting assembly (300), a first eyepiece (410), and a second eyepiece (420); The first reflecting prism mounting assembly (200) includes a first field stop (210), a first reflecting prism (230), and a first reflecting prism mounting base (220); the first field stop (210) and the first reflecting prism (230) are fixedly mounted on the first reflecting prism mounting base (220); The second reflecting prism mounting assembly (300) includes a second field stop (310), a second reflecting prism (330), and a second reflecting prism mounting base (320); the second field stop (310) and the second reflecting prism (330) are fixedly mounted on the second reflecting prism mounting base (320); In the direction of the first optical axis (510) of the dual optical axis inner tube assembly (100), a first reflecting prism mounting base assembly (200) and a first eyepiece (410) are arranged in sequence; In the direction of the second optical axis (520) of the dual optical axis inner tube assembly (100), a second reflecting prism mounting base assembly (300) and a second eyepiece (420) are sequentially arranged; The first reflecting prism mounting base (220) is directly or indirectly glued to the dual optical axis inner tube assembly (100) and glued to the first eyepiece (410), which is used to glue and fix the first optical axis (510) in the adjusted state when the imaging is adjusted in place. The second reflecting prism holder (320) is directly or indirectly glued to the dual optical axis inner tube assembly (100) and glued to the second eyepiece (420), and is used to glue and fix it in the adjusted state when the imaging of the second optical axis (520) is adjusted in place.

2. The three-dimensional laparoscopic endoscope as described in claim 1, characterized in that, The three-dimensional laparoscopic endoscope also includes a fixation ring (600); The fixing ring (600) is sleeved and fixed on the periphery of the dual optical axis inner tube assembly (100), and the top surface of the fixing ring (600) extends beyond the top surface of the dual optical axis inner tube assembly (100). The first reflecting prism holder (220) and the second reflecting prism holder (320) are both adhesively bonded to the top surface of the fixing ring (600) for indirect adhesive connection with the dual optical axis inner tube assembly (100).

3. The three-dimensional laparoscopic endoscope as described in claim 2, characterized in that, The top surface of the fixing ring (600) is recessed with an annular recess (610); a fixing ring adhesive groove (750) is formed between the annular recess (610), the first reflecting prism fixing seat (220), and the second reflecting prism fixing seat (320) to accommodate adhesive for bonding.

4. The three-dimensional laparoscopic endoscope as described in claim 2, characterized in that, The bottom surface of the first reflecting prism mounting base (220) is recessed with a first stepped hole (221), and a first waterproof platform (222) is protruding around the first stepped hole (221); the first field stop (210) is bonded to the first stepped hole (221); The bottom surface of the second reflecting prism mounting base (320) is recessed with a second stepped hole (321), and a second waterproof platform (322) is protruding around the second stepped hole (321); the second field aperture (310) is bonded to the second stepped hole (321).

5. The three-dimensional laparoscopic endoscope as described in claim 2, characterized in that, The first reflecting prism holder (220) and the second reflecting prism holder (320) are arranged adjacent to each other; the first reflecting prism holder (220) and the second reflecting prism holder (320) are respectively provided with a first square through hole (223) and a second square through hole (323) on two adjacent sides. The first reflecting prism (230) is installed in the first square through hole (223) and is locked by a set screw (224) passing through the first reflecting prism mounting base (220); The second reflecting prism (330) is installed in the second square through hole (323) and is locked by a set screw (324) passing through the second reflecting prism mounting base (320); Both the first reflecting prism (230) and the second reflecting prism (330) are rectangular parallelepipeds with beveled surfaces, and are composed of parallel reflectors (231, 331) and auxiliary bodies (232, 332); the parallel reflectors (231, 331) are used to reflect light.

6. The three-dimensional laparoscopic endoscope as described in claim 2, characterized in that, The first reflecting prism holder (220) and the second reflecting prism holder (320) are spaced apart from each other on their adjacent surfaces, forming an active space (730); The first and second reflective prism holders (220 and 320) have a first edge recess (225) and a second edge recess (325) respectively recessed on their adjacent sides. A fixing seat adhesive groove (720) is formed between the first edge recess (225) and the second edge recess (325). The fixing seat adhesive groove (720) is connected to the movable space (730) and contains adhesive to bond the first reflective prism fixing seat (220) and the second reflective prism fixing seat (320).

7. The three-dimensional laparoscopic endoscope as described in claim 2, characterized in that, The top surface of the first reflecting prism holder (220) is provided with a first mounting cylinder (226); The first eyepiece (410) is inserted into the first mounting cylinder (226). The exposed part of the first eyepiece (410) has a first mounting protrusion (411) on its circumferential surface. The first mounting protrusion (411) and the open end face of the first mounting cylinder (226) form a first eyepiece glue groove (741) for accommodating glue and bonding. The top surface of the second reflecting prism holder (320) is provided with a second mounting cylinder (326); The second eyepiece (420) is inserted into the second mounting cylinder (326). The exposed part of the second eyepiece (420) has a second mounting protrusion (421) on its circumferential surface. A second eyepiece glue groove (742) is formed between the second mounting protrusion (421) and the open end face of the second mounting cylinder (326) to accommodate glue and bond them together.

8. The three-dimensional laparoscopic endoscope as described in claim 7, characterized in that, A first adjustment space (751) is provided between the inner wall of the first mounting cylinder (226) and the insertion part of the first eyepiece (410); A second adjustment space (752) is provided between the inner wall of the second mounting cylinder (326) and the insertion part of the second eyepiece (420).

9. A method for installing a three-dimensional laparoscopic endoscope, characterized in that, The method of installation of the three-dimensional laparoscopic endoscope described in claim 1 includes the following steps: Fixed dual-optical-axis inner tube assembly (100); Along the direction of the first optical axis (510), the first reflecting prism mounting assembly (200) and the first eyepiece (410) are arranged in sequence; Along the direction of the second optical axis (520), the second reflecting prism mounting assembly (300) and the second eyepiece (420) are arranged in sequence; The first reflecting prism mounting assembly (200), the first eyepiece (410), the second reflecting prism mounting assembly (300), and the second eyepiece (420) are respectively held by four clamps; wherein the four clamps are respectively mounted on the corresponding optical slides. Adjust the relative positions of the first reflecting prism mounting assembly (200), the first eyepiece (410), the second reflecting prism mounting assembly (300), and the second eyepiece (420) until the two imaging points corresponding to the first optical axis (510) and the second optical axis (520) are in place; Maintain the relative positions of the first reflecting prism mounting assembly (200), the first eyepiece (410), the second reflecting prism mounting assembly (300), and the second eyepiece (420); The dual-optical-axis inner tube assembly (100), the first reflective prism mounting assembly (200), the second reflective prism mounting assembly (300), the first eyepiece (410), and the second eyepiece (420) are fixedly connected by adhesive.

10. A method for installing a three-dimensional laparoscopic endoscope, characterized in that, The method of installing the three-dimensional laparoscopic endoscope according to any one of claims 2 to 8 includes the following steps: Fix the dual optical axis inner tube assembly (100) and fit the fixing ring (600) around the periphery of the dual optical axis inner tube assembly (100); Along the direction of the first optical axis (510), the first reflecting prism mounting assembly (200) and the first eyepiece (410) are arranged in sequence; Along the direction of the second optical axis (520), the second reflecting prism mounting assembly (300) and the second eyepiece (420) are arranged in sequence; The first reflecting prism mounting assembly (200), the first eyepiece (410), the second reflecting prism mounting assembly (300), and the second eyepiece (420) are respectively held by four clamps; wherein the four clamps are respectively mounted on the corresponding optical slides. Adjust the relative positions of the first reflecting prism mounting assembly (200), the first eyepiece (410), the second reflecting prism mounting assembly (300), and the second eyepiece (420) until the imaging of the first optical axis (510) and the second optical axis (520) is adjusted in place; Maintain the relative positions of the first reflecting prism mounting assembly (200), the first eyepiece (410), the second reflecting prism mounting assembly (300), and the second eyepiece (420); The fixing ring (600) is moved and brought close to the first reflecting prism fixing assembly (200) and the second reflecting prism fixing assembly (300), and then fixedly connected to the dual optical axis inner tube assembly (100); The fixing ring (600), the first reflecting prism mounting assembly (200), the second reflecting prism mounting assembly (300), the first eyepiece (410), and the second eyepiece (420) are fixedly connected by adhesive.

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