A sterile adapter, endoscope, and endoscopic surgical system

Abstract

This utility model discloses a sterile adapter, an endoscope, and an endoscopic surgical system, relating to the field of medical device technology. The sterile adapter is used to connect to an endoscope. The adapter includes an adapter body and a resilient snap-fit ​​assembly. The adapter body has snap-fit ​​positions symmetrically arranged circumferentially. The resilient snap-fit ​​assembly is rotatably connected to the snap-fit ​​positions. The resilient snap-fit ​​assembly includes a snap-fit ​​body and an elastic element. The snap-fit ​​body has a pressing part, a rotating part, and a snap-fit ​​part, with the rotating part located between the pressing part and the snap-fit ​​part. The elastic element acts on the snap-fit ​​body, providing an elastic force that moves the snap-fit ​​part toward the endoscope. Under external force, the pressing part overcomes the elastic force of the elastic element, causing the snap-fit ​​part to move away from the endoscope. This sterile adapter, by using the pressing part of the snap-fit ​​body to overcome the elastic force of the elastic element, separates the snap-fit ​​part from the endoscope, making operation convenient and less prone to damage; thus improving the usability of the sterile adapter.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a sterile adapter, an endoscope, and an endoscopic surgical system. Background Technology

[0002] An endoscope is a diagnostic instrument used to observe the state of the body or to collect tissue cells from diseased areas.

[0003] The endoscope is mounted on the robotic arm of the endoscopic surgical system via a sterile adapter. The robotic arm controls the movement of the endoscope. In related technologies, the connection and separation of the sterile adapter and the endoscope are achieved by pressing a button on the sterile adapter. The button and the sterile adapter are integrally molded. When the pressure applied to the button is high, the material may undergo plastic deformation, causing the button to be unable to return to its original shape, which in turn makes it difficult to disassemble the endoscope. In extreme cases, the button may even break, affecting the normal use of the endoscopic surgical system. Utility Model Content

[0004] The purpose of this invention is to provide a sterile adapter, endoscope, and endoscopic surgical system that allows for easy disassembly and reassembly of the sterile adapter and endoscope, is not easily damaged, and ensures the normal use of the endoscopic surgical system.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A sterile adapter for connecting an endoscope, the sterile adapter comprising:

[0007] The adapter body has symmetrically arranged snap-fit ​​positions around its circumference;

[0008] A resilient snap-fit ​​assembly is rotatably connected to the snap-fit ​​position. The resilient snap-fit ​​assembly includes a snap-fit ​​body and an elastic element. The snap-fit ​​body has a pressing part, a rotating part, and a snap-fit ​​part. The rotating part is located between the pressing part and the snap-fit ​​part. The elastic element acts on the snap-fit ​​body, providing an elastic force that causes the snap-fit ​​part to move toward the endoscope. Under the action of an external force, the pressing part overcomes the elastic force of the elastic element, causing the snap-fit ​​part to move away from the endoscope.

[0009] As an optional embodiment of the sterile adapter, the rotating part includes a rotating shaft and a rotating shaft hole. The rotating shaft hole is located on opposite sides of the snap-fit ​​body, and the rotating shaft passes through the rotating shaft hole, so that the snap-fit ​​body can rotate relative to the rotating shaft.

[0010] The two sides of the snap-fit ​​position are provided with radial limiting parts, and the two ends of the rotating shaft are snapped into the radial limiting parts and then axially limited by the limiting ring.

[0011] As an optional embodiment of the sterile adapter, the radial limiting portion includes limiting holes located on opposite sides of the snap-fit ​​position. The limiting holes communicate with the outer wall of the adapter body, and the through opening of the limiting holes is provided with an elastic limiting protrusion.

[0012] As an alternative to the sterile adapter, the elastic element is a torsion spring, which includes a torsion spring body, a first pin and a second pin located on opposite sides of the torsion spring body;

[0013] The inner wall of the snap-fit ​​body is provided with an accommodating groove and a first pin groove that are interconnected. The accommodating groove is located between the two rotating shaft holes and is used to accommodate the torsion spring body. The snap-fit ​​position is provided with a second pin groove.

[0014] The torsion spring body is sleeved on the rotating shaft, with the first pin abutting against the first pin slot and the second pin abutting against the second pin slot.

[0015] As an alternative to the sterile adapter, the adapter body has symmetrically arranged clearance grooves on its peripheral wall, and the snap-fit ​​part bends inward from one end of the rotating part, so as to pass through the clearance groove and snap-fit ​​with the endoscope.

[0016] As an alternative to the sterile adapter, the inner wall of the snap-fit ​​part has an arc-shaped surface, and the top of the relief groove forms a limiting ridge at the connection between it and the outer wall of the adapter body. The arc-shaped surface abuts against the limiting ridge to restrict the rotation of the snap-fit ​​body.

[0017] As an alternative to the sterile adapter, the resilient snap-fit ​​assembly further includes a pressing handle, wherein the pressing part bends outward from the other end of the rotating part and is connected to the pressing handle, and the pressing handle is located outside the end face of the adapter body.

[0018] As an alternative to the sterile adapter, the pressing handle includes a handle portion and a pressing end, the handle portion extending axially to connect the pressing portion and the pressing end, and the pressing end being parallel to the end face of the adapter body.

[0019] As an alternative to the sterile adapter, the inner wall of the adapter body has a first limiting structure, which is symmetrically distributed circumferentially and extends axially to limit the endoscope from rotating circumferentially.

[0020] And / or, the inner wall of the adapter body has a stop surface for limiting the axial movement of the endoscope.

[0021] An endoscope, wherein the outer wall of the endoscope is provided with an annular groove for engaging with the snap-fit ​​portion of the sterile adapter described in any of the above embodiments.

[0022] As an alternative to the endoscope, the outer wall of the endoscope has a second limiting structure, which is distributed circumferentially and extends axially; the second limiting structure is used to cooperate with the first limiting structure provided on the sterile adapter.

[0023] As an alternative to the endoscope, the outer wall of the endoscope also has a stop step that abuts against the sterile adapter.

[0024] An endoscopic surgical system includes a sterile adapter as described above and an endoscope as described above, wherein the endoscope is inserted into the sterile adapter such that the snap-fit ​​portion engages with the annular groove.

[0025] The beneficial effects of this utility model are:

[0026] The sterile adapter provided by this utility model separates the elastic snap-fit ​​component from the adapter body, with the elastic snap-fit ​​component rotatably connected to the snap-fit ​​position on the adapter body. The elastic snap-fit ​​component utilizes the elastic force of the elastic element to snap the snap-fit ​​portion of the snap-fit ​​body with the endoscope, thus connecting the endoscope and the sterile adapter. During disassembly, an external force applied to the pressing portion of the snap-fit ​​body overcomes the elastic force of the elastic element, causing the snap-fit ​​portion to separate from the endoscope; the snap-fit ​​body does not undergo plastic deformation, allowing for easy assembly and disassembly of the sterile adapter and endoscope. This convenient operation minimizes damage and significantly improves the usability of the sterile adapter.

[0027] The endoscope provided by this utility model has an annular groove on its outer wall that engages with the snap-fit ​​part of the sterile adapter, making the endoscope easy to assemble and disassemble and less prone to damage.

[0028] The endoscopic surgical system provided by this utility model includes the aforementioned sterile adapter and endoscope. The elastic snap-fit ​​component is separately disposed from the adapter body, and the elastic force of the elastic snap-fit ​​component drives the connection between the sterile adapter and the endoscope. The external force applied to the snap-fit ​​body overcomes the elastic force to separate the sterile adapter from the endoscope. This makes the disassembly and assembly of the endoscope and the sterile adapter more convenient and less prone to damage, ensuring the normal use of the endoscopic surgical system. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the connection between the sterile adapter and the endoscope provided in Embodiment 1 of this utility model;

[0030] Figure 2 This is an exploded view of the sterile adapter provided in Embodiment 1 of this utility model;

[0031] Figure 3This is a schematic diagram of the structure of the elastic snap-fit ​​assembly provided in Embodiment 1 of this utility model;

[0032] Figure 4 This is an exploded view of the elastic snap-fit ​​assembly provided in Embodiment 1 of this utility model;

[0033] Figure 5 This is a front view of the adapter body provided in Embodiment 1 of this utility model;

[0034] Figure 6 This is a top view of the adapter body provided in Embodiment 1 of this utility model;

[0035] Figure 7 This is a side view of the elastic snap-fit ​​component and the adapter body provided in Embodiment 1 of this utility model.

[0036] Figure 8 This is a partially enlarged side section view of the elastic snap-fit ​​component and the adapter body provided in Embodiment 1 of this utility model.

[0037] Figure 9 This is a partially enlarged view of the elastic snap-fit ​​component and the adapter body provided in Embodiment 1 of this utility model;

[0038] Figure 10 This is a schematic diagram of the first structure of the endoscope provided in Embodiment 2 of this utility model;

[0039] Figure 11 This is a schematic diagram of the second structure of the endoscope provided in Embodiment 2 of this utility model;

[0040] Figure 12 This is a schematic diagram of the state of the endoscopic surgical system provided in Embodiment 3 of this utility model when it is not connected in place;

[0041] Figure 13 This is a side sectional view of the sterile adapter and endoscope provided in Embodiment 3 of this utility model;

[0042] Figure 14 This is a top view of the sterile adapter and endoscope provided in Embodiment 3 of this utility model.

[0043] In the picture:

[0044] 100. Endoscope; 101. Circular groove; 1021. Limiting groove; 1022. Limiting protrusion; 103. Stopping step;

[0045] 1. Adapter body; 11. Flange; 111. Snap-fit ​​position; 112. Limiting hole; 113. Second pin slot; 12. Middle ring; 121. Elastic limiting protrusion; 122. Clearance groove; 123. Limiting ridge; 124. Limiting rib; 125. Stop surface;

[0046] 2. Elastic snap-fit ​​assembly; 21. Snap-fit ​​body; 211. Pressing part; 2111. First pin groove; 2112. Hanging hole; 212. Rotating part; 2121. Rotating shaft; 2122. Rotating shaft hole; 2123. Limiting ring; 213. Snap-fit ​​part; 214. Receiving groove; 22. Torsion spring; 221. Torsion spring body; 222. First pin; 223. Second pin; 23. Press handle; 231. Handle part; 2311. Raised rib; 232. Pressing end; 24. Reinforcing rib. Detailed Implementation

[0047] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0048] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0049] Example 1:

[0050] A sterile adapter is used to connect an endoscope to an endoscopic surgical system, enabling motion control of the endoscope via the system's drive mechanism. In related technologies, the sterile adapter and endoscope are connected and disconnected via snap-fit ​​mechanisms. Pressing a one-piece molded plastic button on the sterile adapter causes it to deform, separating the adapter from the endoscope. However, the plastic button is prone to plastic deformation and cannot recover its original shape, making endoscope disassembly difficult. Furthermore, under excessive pressure, the button may break, affecting the normal operation of the endoscopic surgical system.

[0051] This embodiment provides a sterile adapter to solve the above-mentioned technical problems, realize the convenient assembly and disassembly of the sterile adapter and endoscope, and greatly improve the usability of the sterile adapter.

[0052] like Figures 1-6As shown, this embodiment provides a sterile adapter for connecting an endoscope 100. The sterile adapter includes a separate adapter body 1 and a flexible snap-fit ​​assembly 2. Before connecting the endoscope 100, the flexible snap-fit ​​assembly 2 is first installed on the adapter body 1. The adapter body 1 includes a central ring 12 and flanges 11 located at both ends of the central ring 12. The flexible snap-fit ​​assembly 2 uses its own elasticity to snap the endoscope 100, which is placed within the central ring 12, into place. By pressing the flexible snap-fit ​​assembly 2 to overcome the elastic force, the sterile adapter and the endoscope 100 can be separated.

[0053] The adapter body 1 is symmetrically provided with snap-fit ​​positions 111, and the elastic snap-fit ​​component 2 is rotatably connected to the snap-fit ​​position 111; so that the elastic snap-fit ​​component 2 can rotate relative to the adapter body 1, and by rotating, the elastic snap-fit ​​component 2 moves towards or away from the axis of the adapter body 1, and snaps or separates from the endoscope 100.

[0054] For example, the snap-fit ​​position 111 is located on the flange 11 at one end of the middle ring 12. There are two snap-fit ​​positions 111, and each snap-fit ​​position 111 is rotatably connected to an elastic snap-fit ​​component 2. The two elastic snap-fit ​​components 2 can snap onto the opposite sides of the endoscope 100 in the circumferential direction to ensure the stability of the connection between the endoscope 100 and the adapter body 1.

[0055] In one embodiment, the elastic locking assembly 2 includes a locking body 21 and an elastic member. The locking body 21 has a pressing portion 211, a rotating portion 212, and a locking portion 213, with the rotating portion 212 located between the pressing portion 211 and the locking portion 213. The elastic member acts on the locking body 21, providing an elastic force that moves the locking portion 213 toward the endoscope 100. Under the action of an external force, the pressing portion 211 overcomes the elastic force of the elastic member, causing the locking portion 213 to move away from the endoscope 100.

[0056] The snap-fit ​​body 21 is detachably connected to the adapter body 1 via the rotating part 212, and the snap-fit ​​body 21 rotates relative to the rotating part 212. An elastic member is sleeved on the rotating part 212, with one end connected to the pressing part 211 and the other end connected to the snap-fit ​​position 111; under the compression of the pressing part 211 and the snap-fit ​​position 111, the elastic member has an initial elastic force that rotates toward the axis of the adapter body 1.

[0057] In this embodiment, the snap-fit ​​body 21 may be made of a rigid material to further increase the deformation resistance of the pressing part 211.

[0058] For example, two elastic snap-fit ​​components 2 are provided, spaced 180° apart. By controlling the spring coefficient of the elastic element, the initial elastic force of the elastic element is controlled, so that the two elastic snap-fit ​​components 2 can stably connect the endoscope 100 to the adapter body 1 under the action of the initial elastic force of the elastic element. During separation, the two elastic snap-fit ​​components 2 are forced towards the axis of the adapter body 1 by the pressing part 211, and the two snap-fit ​​parts 213 move away from each other, thereby disengaging the sterile adapter from the endoscope 100. The endoscope 100 can then be removed from the middle ring 12 of the adapter body 1, realizing separation from the sterile adapter. This elastic snap-fit ​​component 2 is easy to operate and not easily damaged; it greatly improves the usability of the sterile adapter.

[0059] In one embodiment, the rotating part 212 includes a rotating shaft 2121 and a rotating shaft hole 2122. The rotating shaft hole 2122 is located on opposite sides of the snap-fit ​​body 21, and the rotating shaft 2121 passes through the rotating shaft hole 2122, allowing the snap-fit ​​body 21 to rotate relative to the rotating shaft 2121. Radial limiting parts are provided on both sides of the snap-fit ​​position 111. After the two ends of the rotating shaft 2121 are snapped into the radial limiting parts, they are axially limited by limiting rings 2123. The rotating shaft 2121 is fixed to the adapter body 1 by the radial limiting parts and the limiting rings 2123, ensuring that the snap-fit ​​body 21 will not move axially or radially relative to the adapter body 1, but can only rotate; thereby ensuring a stable connection between the elastic snap-fit ​​assembly 2 and the adapter body 1, while realizing the connection and separation of the sterile adapter and the endoscope 100.

[0060] For example, the snap-fit ​​body 21 has two side plates arranged opposite each other, and each side plate has a pivot hole 2122. A limiting ring 2123 is fixed on the pivot 2121. After the pivot 2121 passes through one pivot hole 2122, the elastic element, another pivot hole 2122 and another limiting ring 2123 in sequence, the two ends of the pivot 2121 are snapped into the radial limiting part. The limiting ring 2123 fixed on the pivot 2121 is located between one side wall of the snap-fit ​​position 111 and one side plate of the snap-fit ​​body 21, and the other limiting ring 2123 is located between the other side wall of the snap-fit ​​position 111 and the other side plate of the snap-fit ​​body 21, thus realizing the axial limiting of the pivot 2121. The radial limiting part radially limits the pivot 2121, thereby restricting the pivot 2121 from moving radially.

[0061] In one embodiment, the radial limiting portion includes limiting holes 112 located on opposite sides of the snap-fit ​​position 111. The limiting holes 112 communicate with the outer wall of the adapter body 1, and the through opening of the limiting holes 112 is provided with elastic limiting protrusions 121. When the two ends of the rotating shaft 2121 enter the limiting holes 112, the elastic limiting protrusions 121 are pressed against the through opening of the limiting holes 112, so that the rotating shaft 2121 enters the limiting holes 112. After the rotating shaft 2121 enters the limiting holes 112, the elastic limiting protrusions 121 restore their deformation, thereby providing radial limiting for the rotating shaft 2121.

[0062] For example, the limiting hole 112 is located on the side of the flange 11 near the middle ring 12. When installing the elastic snap-fit ​​assembly 2, the snap-fit ​​body 21 is first inserted into the snap-fit ​​position 111 from the upper end of the flange 11. Then, the rotating shaft 2121 passes through one of the rotating shaft holes 2122, the elastic element, the other rotating shaft hole 2122 and the limiting ring 2123 in sequence. After that, both ends of the rotating shaft 2121 are snapped into the limiting hole 112 through the through opening of the limiting hole 112.

[0063] In one embodiment, such as Figure 4 , Figure 7 and Figure 8 As shown, the elastic element is a torsion spring 22, which includes a torsion spring body 221 and a first pin 222 and a second pin 223 located on opposite sides of the torsion spring body 221. The inner wall of the snap-fit ​​body 21 has a receiving groove 214 and a first pin groove 2111 that communicate with each other. The receiving groove 214 is located between two rotating shaft holes 2122 and is used to receive the torsion spring body 221. The snap-fit ​​position 111 has a second pin groove 113. The torsion spring body 221 is sleeved on the rotating shaft 2121, with the first pin 222 abutting against the first pin groove 2111 and the second pin 223 abutting against the second pin groove 113. The torsional force of the torsion spring 22 applies force to the snap-fit ​​body 21, causing the snap-fit ​​body 21 to rotate relative to the adapter body 1.

[0064] For example, the first pin 222 and the second pin 223 are at a certain angle, and the ends of both the first pin 222 and the second pin 223 are bent. A hanging hole 2112 extending radially is provided in the first pin groove 2111. The bent end of the first pin 222 is inserted into the hanging hole 2112 for easy hooking and fixing. The first pin groove 2111 and the second pin groove 213 are arranged opposite to each other, so that the first pin 222 and the second pin 223 are in a compressed state. The torsion spring 22 has a tendency to move towards the axis of the adapter body 1, so that the two elastic snap-fit ​​components 2 can apply a clamping force to the endoscope 100. Pressing the two pressing parts 211 at the same time causes the snap-fit ​​body 21 to rotate around the pivot 2121, and the two snap-fit ​​parts 213 move away from each other, thereby releasing the snap-fit ​​parts 213 from the endoscope 100 and releasing the endoscope 100.

[0065] Of course, in other embodiments, the elastic element can also be a U-shaped or V-shaped spring sheet, with one end of the U-shaped or V-shaped spring sheet fixed to the adapter body 1 and the other end abutting against the snap-fit ​​body 21.

[0066] In one embodiment, such as Figure 5 , Figure 7 and Figure 8 As shown, the adapter body 1 has symmetrically arranged clearance grooves 122 on its peripheral wall. The locking part 213 bends inward from one end of the rotating part 212 and can pass through the clearance groove 122 to lock with the endoscope 100. The clearance grooves 122 are located on opposite sides of the central ring 12. The locking parts 213 of the two elastic locking components 2 pass through their respective corresponding clearance grooves 122 to lock with the opposite sides of the endoscope 100.

[0067] For example, the clearance groove 122 is configured as a square groove that is adapted to the snap-fit ​​portion 213.

[0068] In one embodiment, the inner wall of the latching portion 213 has an arcuate surface, and the top of the clearance groove 122 forms a limiting ridge 123 at the connection between it and the outer wall of the adapter body 1. The limiting ridge 123 abuts against the arcuate surface of the inner wall of the latching portion 213, restricting the latching body 21 from continuing to rotate around the pivot 2121, and also restricting the first pin 222 that abuts against the pressing portion 211 from continuing to rotate outward.

[0069] In one embodiment, the elastic snap-fit ​​assembly 2 further includes a pressing handle 23. The pressing part 211 bends outward from the other end of the rotating part 212 and connects to the pressing handle 23. The pressing handle 23 is located outside the end face of the adapter body 1. The pressing handle 23 is located outside the flange 11, which facilitates hand operation by the operator and improves the convenience of operation.

[0070] For example, such as Figure 4 , Figures 7-9 As shown, the pressing handle 23 includes a handle portion 231 and a pressing end 232. The handle portion 231 extends axially to connect the pressing portion 211 and the pressing end 232. The pressing end 232 is parallel to the end face of the adapter body 1, that is, parallel to the end face of the flange 11. By pressing the pressing end 232, the snap-fit ​​body 21 is inserted into the snap-fit ​​position 111. The handle portion 231 is designed so that the operator can hold both handle portions 231 with one hand at the same time and apply force in the direction close to the axis of the adapter body 1, causing the snap-fit ​​body 21 to rotate around the pivot 2121 and release the endoscope 100. After releasing the hand, under the elastic restoring force of the torsion spring 22, the two snap-fit ​​bodies 21 return to their initial positions.

[0071] Furthermore, a reinforcing rib 24 is provided between the handle 231 and the pressing part 211 to ensure the connection strength between the pressing handle 23 and the locking body 21, and further reduce the probability of damage to the elastic locking assembly 2.

[0072] Multiple raised ribs 2311 are provided at intervals on the outer periphery of the handle 231. The raised ribs 2311 extend circumferentially, which increases the structural strength of the handle 231 on the one hand, and increases the friction with the operator's hand on the other.

[0073] The sterile adapter provided in this embodiment allows one hand to press both elastic locking components 2 simultaneously, while the other hand can remove the endoscope 100 from the sterile adapter; after releasing the hand, the elastic locking components 2 can return to their initial position.

[0074] To facilitate the installation of the endoscope 100 into the sterile adapter, the existing endoscope 100 has a large radial clearance with the sterile adapter and poor rotational accuracy, which significantly affects the clarity of the field of view during insertion and assembly of the endoscope 100. To solve the above technical problems, such as... Figure 6 As shown, the sterile adapter provided in this embodiment has a first limiting structure and a stop surface 125 on the inner wall of the adapter body 1. The first limiting structure is distributed circumferentially and extends axially to limit the endoscope 100 from rotating circumferentially. The stop surface 125 is located at the lower end of the first limiting structure to limit the endoscope 100 from moving axially.

[0075] The first limiting structure significantly reduces the radial clearance between the adapter body 1 and the endoscope 100, effectively suppressing circumferential rotational offset and improving the rotational accuracy of the endoscope 100. The stop surface 125 precisely limits the axial displacement of the endoscope 100, preventing excessive insertion or loosening. This simultaneously solves the problem of blurred vision caused by excessive assembly clearance and ensures stable positioning of the endoscope 100 during operation, combining the dual advantages of high-precision assembly and reliable motion control.

[0076] For example, the first limiting structure includes limiting ribs 124, and three limiting ribs 124 are provided. Two limiting ribs 124 are spaced apart on opposite sides of another limiting rib 124. A groove is formed between the two limiting ribs 124 to cooperate with one side of the outer periphery of the endoscope 100. The other side of the outer periphery of the endoscope 100 is cooperated with another limiting rib 124 for limiting. Through the cooperation of the concave and convex structure, the cooperation gap between the adapter body 1 and the endoscope 100 is reduced, and the rotation accuracy of the endoscope 100 is improved.

[0077] Example 2:

[0078] like Figure 10 and Figure 11 As shown, this embodiment provides an endoscope that is connected to a robotic arm via a sterile adapter provided in Embodiment 1.

[0079] The outer wall of the endoscope 100 is provided with an annular groove 101 for engaging with the snap-fit ​​part 213 of the sterile adapter provided in Embodiment 1, so as to realize the snap-fit ​​engagement between the sterile adapter and the endoscope 100.

[0080] In one embodiment, the outer wall of the endoscope 100 has a second limiting structure and a stop step 103 that abuts against a sterile adapter. The second limiting structure is distributed circumferentially and extends axially; the second limiting structure is used to cooperate with a first limiting structure provided on the sterile adapter. The stop step 103 is located at the lower end of the second limiting structure and extends radially. The second limiting structure cooperates with the first limiting structure to restrict the circumferential rotation of the endoscope 100 along the sterile adapter, and the stop step 103 abuts against the stop surface 125 to limit the insertion depth of the endoscope 100.

[0081] For example, the second limiting structure includes a limiting groove 1021 and a limiting protrusion 1022. The limiting protrusion 1022 engages with the groove between the two limiting ribs 124, and the limiting groove 1021 engages with the other limiting rib 124.

[0082] The endoscope 100 provided in this embodiment is snapped together with the sterile adapter provided in Embodiment 1, making the endoscope 100 easy to assemble and disassemble and not easily damaged.

[0083] Example 3:

[0084] like Figures 12-14 As shown, this embodiment provides an endoscopic surgical system, including a sterile adapter provided in Embodiment 1 and an endoscope 100 provided in Embodiment 2. The endoscope 100 is inserted into the sterile adapter, and the snap-fit ​​part 213 engages with the annular groove 101.

[0085] The connection between the sterile adapter and the endoscope 100 is achieved by using the elastic snap-fit ​​component 2, which is separately connected to the adapter body 1, and by using the elastic force of the elastic snap-fit ​​component 2. The connection between the sterile adapter and the endoscope 100 is achieved by using the external force applied to the snap-fit ​​body 21 to overcome the elastic force. This makes the disassembly and assembly of the endoscope 100 and the sterile adapter more convenient and less prone to damage, thus ensuring the normal use of the endoscopic surgical system.

[0086] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A sterile adapter for connecting an endoscope, characterized by, The sterile adapter includes: The adapter body has symmetrically arranged snap-fit ​​positions around its circumference; A resilient snap-fit ​​assembly is rotatably connected to the snap-fit ​​position. The resilient snap-fit ​​assembly includes a snap-fit ​​body and an elastic element. The snap-fit ​​body has a pressing part, a rotating part, and a snap-fit ​​part. The rotating part is located between the pressing part and the snap-fit ​​part. The elastic element acts on the snap-fit ​​body, providing an elastic force that causes the snap-fit ​​part to move toward the endoscope. Under the action of an external force, the pressing part overcomes the elastic force of the elastic element, causing the snap-fit ​​part to move away from the endoscope.

2. The sterile adapter according to claim 1, characterized in that, The rotating part includes a rotating shaft and a rotating shaft hole. The rotating shaft hole is located on opposite sides of the snap-fit ​​body. The rotating shaft passes through the rotating shaft hole, so that the snap-fit ​​body can rotate relative to the rotating shaft. The two sides of the snap-fit ​​position are provided with radial limiting parts, and the two ends of the rotating shaft are snapped into the radial limiting parts and then axially limited by the limiting ring.

3. The aseptic adapter of claim 2, wherein, The radial limiting part includes limiting holes located on opposite sides of the snap-fit ​​position. The limiting holes are in communication with the outer wall of the adapter body, and the through opening of the limiting holes is provided with elastic limiting protrusions.

4. The aseptic adapter of claim 2, wherein, The elastic element is a torsion spring, which includes a torsion spring body, a first pin and a second pin located on opposite sides of the torsion spring body; The inner wall of the snap-fit ​​body is provided with an accommodating groove and a first pin groove that are interconnected. The accommodating groove is located between the two rotating shaft holes and is used to accommodate the torsion spring body. The snap-fit ​​position is provided with a second pin groove. The torsion spring body is sleeved on the rotating shaft, with the first pin abutting against the first pin slot and the second pin abutting against the second pin slot.

5. The aseptic adapter of claim 1, wherein, The adapter body has symmetrical clearance grooves on its peripheral wall. The snap-fit ​​part bends inward from one end of the rotating part and can pass through the clearance groove to snap-fit ​​with the endoscope.

6. The aseptic adapter of claim 5, wherein, The inner wall of the snap-fit ​​part has an arc-shaped surface, and a limiting ridge is formed at the connection between the top of the clearance groove and the outer wall of the adapter body. The arc-shaped surface abuts against the limiting ridge to restrict the rotation of the snap-fit ​​body.

7. The aseptic adapter of claim 1, wherein, The elastic snap-fit ​​assembly also includes a pressing handle, wherein the pressing part is bent outward from the other end of the rotating part and connected to the pressing handle, and the pressing handle is located outside the end face of the adapter body.

8. The aseptic adapter of claim 7, wherein, The pressing handle includes a handle portion and a pressing end, the handle portion extending axially to connect the pressing portion and the pressing end, and the pressing end being parallel to the end face of the adapter body.

9. The sterile adapter of any one of claims 1-8, wherein, The inner wall of the adapter body has a first limiting structure, which is distributed circumferentially and extends axially to limit the endoscope from rotating circumferentially. And / or, the inner wall of the adapter body has a stop surface for limiting the axial movement of the endoscope.

10. An endoscope characterized by comprising: The outer wall of the endoscope is provided with an annular groove, which is used to cooperate with the snap-fit ​​portion of the sterile adapter according to any one of claims 1-9.

11. The endoscope of claim 10, wherein, The outer wall of the endoscope has a second limiting structure, which is distributed circumferentially and extends axially; the second limiting structure is used to cooperate with the first limiting structure provided on the sterile adapter.

12. The endoscope of claim 10, wherein, The outer wall of the endoscope also has a stop step that abuts against the sterile adapter.

13. An endoscopic surgical system, characterized by, An endoscope according to any one of claims 10-12 inserted into the sterile adapter so that the snap portion is snap fitted with the ring groove.

Images