Reusable connecting device and endoscope system

Abstract

The invention discloses a reusable connecting device and an endoscope system, and belongs to the technical field of medical instruments. The reusable connecting device is used for connecting the first endoscope and the second endoscope, and an instrument channel opening is formed in the peripheral side of the first endoscope; the reusable connecting device comprises a connecting piece, the connecting piece comprises a hook, a first mounting part and a second mounting part, the first mounting part is provided with a first containing groove used for surrounding at least part of the peripheral surface of the first endoscope, and the hook is hung at an instrument channel opening; the second installation part is used for being detachably connected with a second endoscope. And the hook and the first mounting part are detachably connected with the first endoscope. During use, the connecting device is used for connecting the first endoscope and the second endoscope, and operation is convenient; and after the endoscope is used, the first endoscope and the second endoscope are respectively taken down from the connecting device, so that the subsequent repeated use is facilitated, the cost is saved, and the waste is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a reusable connection device and endoscope system. Background Technology

[0002] In some medical procedures (e.g., endoscopic procedures), a first endoscope (such as a duodenoscope) and a second endoscope (such as a cholangioscope) may be used simultaneously. Both the first and second endoscopes may each have knobs configured to control aspects / features of the device. Therefore, in some cases, the physician must operate two sets of knobs, the insertion cannula of the second endoscope, and accessory devices inserted into the second endoscope, while simultaneously maintaining the position of the first endoscope relative to the target site. For this reason, in cases involving endoscopes and catheters, the physician typically maintains the endoscope in a hinged position with their left hand while controlling the catheter position and advancement with their right hand. Because the catheter is usually inserted distal to the handle of the first endoscope, the physician needs to constantly translate their right forearm and wrist along the parallel set of knobs, which is ergonomically inefficient.

[0003] In related technologies, a connecting device is integrally connected to the first endoscope, which connects to the second endoscope to secure both endoscopes and facilitate doctor's operation. However, when the first endoscope can no longer be used, this connecting device is discarded along with the first endoscope, resulting in waste of the connecting device and increased costs. Summary of the Invention

[0004] The purpose of this invention is to provide a reusable connection device and endoscope system for connecting a first endoscope and a second endoscope, which facilitates operation; and the connection device can be reused, saving costs and reducing waste.

[0005] To achieve this objective, the present invention adopts the following technical solution: A reusable connecting device for connecting a first endoscope and a second endoscope, wherein the first endoscope has an instrument channel opening on its peripheral side; the reusable connecting device includes: The connector includes a hook, a first mounting portion and a second mounting portion. The first mounting portion has a first receiving groove for circumferentially enclosing at least a portion of the outer peripheral surface of the first endoscope. The hook is hung at the instrument channel opening. The second mounting portion is used for detachably connecting the second endoscope.

[0006] In some embodiments, the second mounting portion is provided with a second receiving groove through which the second endoscope passes and is received.

[0007] In some embodiments, a communication port is provided between the first mounting portion and the second mounting portion, the first receiving groove and the second receiving groove are connected to each other through the communication port, and the first endoscope and the second endoscope are fitted together at the communication port.

[0008] In some embodiments, the second mounting portion further has an opening through which the second endoscope can pass to be installed into the second receiving slot.

[0009] In some embodiments, the reusable connection device further includes a clamping structure disposed at the opening, wherein the second mounting portion is connected to both ends of the clamping structure on both sides of the opening, thereby tightening the second mounting portion inward to clamp the second endoscope.

[0010] In some embodiments, the clamping structure has a protrusion on one side facing the second receiving groove, and the protrusion presses against the outer peripheral surface of the second endoscope.

[0011] In some embodiments, one end of the clamping structure is rotatably connected to the second mounting part, and the other end is snapped, connected by a threaded component, connected by a strap, or inserted into the second mounting part by a pin.

[0012] In some embodiments, the clamping structure is made of plastic, silicone, or metal.

[0013] In some embodiments, the sidewall of the first receiving groove is provided with a first anti-slip structure, and the first endoscope forms an anti-slip connection with the first receiving groove through the first anti-slip structure, thereby restricting the relative sliding between the first endoscope and the first receiving groove; and / or The side wall of the second receiving groove is provided with a second anti-slip structure, and the second endoscope forms an anti-slip connection with the second receiving groove through the second anti-slip structure, thereby restricting the relative sliding between the second endoscope and the second receiving groove.

[0014] In some embodiments, the materials of the first anti-slip structure and the second anti-slip structure are elastic materials with a coefficient of friction of not less than 0.6.

[0015] In some embodiments, the materials of the first anti-slip structure and the second anti-slip structure are silicone, nitrile rubber, or fluororubber.

[0016] In some embodiments, the first endoscope includes a first tail sleeve, and the first receiving groove is flared to fit the outer peripheral side of the first tail sleeve so that the two fit together; the second endoscope includes a middle portion of a handle, and the second receiving groove is flared to fit the outer peripheral side of the middle portion of the handle so that the two fit together.

[0017] In some embodiments, the connector is a curved, thin-walled structure, the first mounting portion is recessed inward to define a first receiving groove for assembling the first endoscope; the first mounting portion covers the outer periphery of the first endoscope, and the first receiving groove covers more than half of the circumferential surface of the first endoscope; two extensions extend outward from the periphery of the first mounting portion to form a second mounting portion, and a second receiving groove is formed between the two extensions.

[0018] In some embodiments, the hook includes a mounting portion and a connecting portion connected at an angle, the connecting portion is connected to the first mounting portion, the mounting portion has a connecting hole, the instrument channel opening has an annular groove on its periphery, and the connecting hole is fitted into the annular groove.

[0019] In some embodiments, the connector further includes a transition portion connecting the first mounting portion and the hook, and the second mounting portion is connected to the outer peripheral surface of the first mounting portion.

[0020] In some embodiments, the outer peripheral surface of the tail sleeve of the first endoscope is fitted with the outer peripheral surface of the second endoscope.

[0021] An endoscope system includes a first endoscope, a second endoscope, and a reusable connection device as described in any of the preceding claims, the reusable connection device being detachably connected to the first endoscope and the second endoscope, respectively.

[0022] The beneficial effects of this invention are: This invention provides a reusable connecting device and endoscope system. A hook connects to a first endoscope for axial positioning, and a first mounting portion encircles the first endoscope for radial positioning, thus enabling a detachable connection between the connecting device and the first endoscope via the hook and the first mounting portion. A second mounting portion further enables a detachable connection between the connecting device and both the first and second endoscopes. In use, the reusable connecting device connects the first and second endoscopes for easy operation. After use, the first and second endoscopes can be removed from the connecting device for subsequent reuse, thereby saving costs and reducing waste. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the clamping structure of a reusable connecting device in an open state from one perspective, provided by a specific embodiment of the present invention. Figure 2 This is a schematic diagram of the clamping structure of the reusable connecting device in the open state from another perspective provided by a specific embodiment of the present invention; Figure 3 This is a schematic diagram of the clamping structure of the reusable connecting device provided in a specific embodiment of the present invention in the closed state; Figure 4 This is a schematic diagram of a first endoscope from one perspective provided in a specific embodiment of the present invention; Figure 5 This is a schematic diagram of the first endoscope from another perspective provided by a specific embodiment of the present invention; Figure 6 This is a schematic diagram of a first endoscope being installed to a reusable connection device according to a specific embodiment of the present invention; Figure 7 This is a schematic diagram of a specific embodiment of the present invention, showing the simultaneous installation of a first endoscope and a second endoscope to a reusable connection device from one perspective. Figure 8 This is a schematic diagram showing, from another perspective, the simultaneous installation of a first endoscope and a second endoscope onto a reusable connection device, according to a specific embodiment of the present invention.

[0024] In the picture: 100. Reusable connection device; 110. Connector; 111. Hook; 1111. Mounting part; 1112. Connecting part; 1113. Connecting hole; 112. First mounting part; 1121. First receiving groove; 113. Second mounting part; 1131. Second receiving groove; 1132. Opening; 1133. Mounting base; 1134. Pin; 1135. Slot; 114. Connecting port; 115. Transition part; 120. Clamping structure; 121. Protrusion; 130. First anti-slip structure; 140. Second anti-slip structure; 200, First endoscope; 210, Instrument access port; 211, Annular groove; 220, First tail sleeve; 300, Second endoscope. Detailed Implementation

[0025] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] In the description of this invention, 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 invention based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] like Figures 1-8 As shown, this embodiment provides a reusable connecting device for connecting a first endoscope 200 and a second endoscope 300. The first endoscope 200 has an instrument channel opening 210 on its periphery. The reusable connecting device 100 includes a connector 110, which includes a hook 111, a first mounting portion 112, and a second mounting portion 113. The first mounting portion 112 has a first receiving groove 1121 for wrapping around at least a portion of the outer peripheral surface of the first endoscope 200. The hook 111 is hung at the instrument channel opening 210. The second mounting portion 113 is used for detachably connecting the second endoscope 300.

[0029] The hook 111 connects to the first endoscope 200 for axial limiting, and the first mounting part 112 surrounds the first endoscope 200 for radial limiting, thus achieving a detachable connection between the connector 110 and the first endoscope 200 via the hook 111 and the first mounting part 112. Combined with the second mounting part 113, which is detachably connected to the second endoscope 300, the connecting device is detachably connected to both the first endoscope 200 and the second endoscope 300. In use, the reusable connecting device 100 connects the first endoscope 200 and the second endoscope 300 for easy operation; after use, the first endoscope 200 and the second endoscope 300 are removed from the connecting device for subsequent reuse, thereby saving costs and reducing waste.

[0030] The outer peripheral surface of the tail sleeve of the first endoscope 200 fits into the outer peripheral surface of the second endoscope 300, making the first endoscope 200 and the second endoscope 300 more tightly joined radially upward, reducing the overall volume and facilitating operation.

[0031] The second mounting part 113 is provided with a second receiving groove 1131, through which the second endoscope 300 passes and is received in the second receiving groove 1131, and the second endoscope 300 is installed through the second receiving groove 1131.

[0032] In one embodiment, the sidewall of the first receiving groove 1121 is provided with a first anti-slip structure 130. The first endoscope 200 forms an anti-slip connection with the first receiving groove 1121 through the first anti-slip structure 130, which restricts the relative sliding between the first endoscope 200 and the first receiving groove 1121, improves the connection reliability between the first endoscope 200 and the first mounting part 112, and prevents relative sliding or even slippage. The sidewall of the second receiving groove 1131 is provided with a second anti-slip structure 140. The second endoscope 300 forms an anti-slip connection with the second receiving groove 1131 through the second anti-slip structure 140, which restricts the relative sliding between the second endoscope 300 and the second receiving groove 1131, improves the connection reliability between the second endoscope 300 and the second mounting part 113, and prevents relative sliding or even slippage. Optionally, the first anti-slip structure 130 and the second anti-slip structure 140 are made of elastic materials with a coefficient of friction of not less than 0.6. By increasing the coefficient of friction of the materials themselves, the frictional force between the first anti-slip structure 130 and the first endoscope 200, and the frictional force between the second anti-slip structure 140 and the second endoscope 300 are increased, thereby limiting relative sliding. For example, the materials of the first anti-slip structure 130 and the second anti-slip structure 140 are silicone, nitrile rubber, or fluororubber. The first anti-slip structure 130 is bonded to the wall of the first receiving groove 1121, and the second anti-slip structure 140 is bonded to the wall of the second receiving groove 1131. Optionally, the first anti-slip structure 130 and the second anti-slip structure 140 are serrated anti-slip teeth, or the surfaces of the first anti-slip structure 130 and the second anti-slip structure 140 are provided with grid-like anti-slip textures. Through mechanical structure, the friction between the first anti-slip structure 130 and the first endoscope 200, and the friction between the second anti-slip structure 140 and the second endoscope 300 are increased, thereby limiting relative sliding. For example, the first anti-slip structure 130 and the first mounting part 112 are an integral structure or a separate structure, and the second anti-slip structure 140 and the second mounting part 113 are an integral structure or a separate structure.

[0033] Optionally, one or more first anti-slip structures 130 are provided, with their total area accounting for 10%-70% of the total area of ​​the first receiving groove 1121. This avoids the first anti-slip structure 130 having an excessively large area, which would affect the installation and removal of the first endoscope 200, and also avoids the first anti-slip structure 130 having an excessively small area, which would fail to restrict sliding. Similarly, one or more second anti-slip structures 140 are provided, with their total area accounting for 10%-70% of the total area of ​​the second receiving groove 1131.

[0034] In another embodiment, neither the first receiving groove 1121 nor the second receiving groove 1131 has an anti-slip structure. The first receiving groove 1121 can be interference-fitted with the first endoscope 200, and the second receiving groove 1131 can be interference-fitted with the second endoscope 300, thereby limiting relative sliding.

[0035] A connecting port 114 is provided between the first mounting part 112 and the second mounting part 113. The first receiving groove 1121 and the second receiving groove 1131 are connected to each other through the connecting port 114. The first endoscope 200 and the second endoscope 300 fit together at the connecting port 114, saving radial space between the connecting device, the first endoscope 200 and the second endoscope 300.

[0036] In one embodiment, the second mounting portion 113 further has an opening 1132, through which the second endoscope 300 can pass to be installed into the second receiving groove 1131 for easy installation. Optionally, the first endoscope 200 can be installed into the first receiving groove 1121 by passing through the opening 1132, the second receiving groove 1131 and the communication port 114 in sequence for easy installation.

[0037] The reusable connection device 100 also includes a clamping structure 120, which is located at the opening 1132. The second mounting part 113 is connected to both ends of the clamping structure 120 on both sides of the opening 1132, so that the second mounting part 113 is tightened inward to clamp the second endoscope 300, thereby achieving stability and reliability of the connection.

[0038] The clamping structure 120 has a protrusion 121 on the side facing the second receiving groove 1131. The protrusion 121 presses against the outer peripheral surface of the second endoscope 300. When the clamping structure 120 is connected to the second mounting part 113, the protrusion 121 pushes inward against the second endoscope 300 to compress it. Under the action of clamping force and compressive force, the second endoscope 300 can be better fixed in the second receiving groove 1131 of the connecting device. When the first receiving groove 1121 and the second receiving groove 1131 are connected through the connecting port 114, the protrusion 121 presses against the first endoscope 200 through the second endoscope 300, thereby subjecting the first endoscope 200 to compressive force and ensuring stable installation in the first receiving groove 1121.

[0039] One end of the clamping structure 120 is rotatably connected to the second mounting part 113, and the other end is connected to the second mounting part 113 via a snap-fit, a threaded connection, a strap connection, or a pin insertion. Whether the clamping structure 120 is open or closed, it is connected to the connector 110 to prevent loss and facilitate opening or closing. For example, the second mounting part 113 has a mounting seat 1133 on one side of the opening 1132, and the clamping structure 120 is rotatably connected to the mounting seat 1133 via a pin 1134. The second mounting part 113 has a slot 1135 on the other side of the opening 1132, and the clamping structure 120 snaps into the slot 1135. Alternatively, both the second mounting part 113 and the clamping structure 120 have through holes on the other side of the opening 1132. Bolts pass through the through holes and are connected to nuts, pins are inserted into the two through holes, or straps pass through the two through holes for tightening, thereby achieving the connection between the clamping structure 120 and the second mounting part 113. Optionally, the material of the clamping structure 120 can be plastic, silicone, or metal, such as aluminum or stainless steel, without limitation.

[0040] In another embodiment, the second mounting portion 113 does not have an opening 1132 or a clamping structure 120 on its side. One end of the second endoscope 300 along its length is installed into the second receiving groove 1131, and one end of the first endoscope 200 along its length is installed into the first receiving groove 1121. When an opening 1132 is provided, the installation method is selected based on the actual structural dimensions and ease of operation.

[0041] The hook 111 includes a mounting portion 1111 and a connecting portion 1112 connected at an angle. The connecting portion 1112 connects to the first mounting portion 112. The mounting portion 1111 has a connecting hole 1113. An annular groove 211 is provided on the periphery of the instrument channel opening 210. The connecting hole 1113 is fitted into the annular groove 211, thereby achieving radial and axial positioning of the first endoscope 200 and the hook 111. The structure is simple and easy to operate. The included angle between the mounting portion 1111 and the connecting portion 1112 can be greater than 0° and less than 180°, specifically adapted to the shape of the first endoscope 200 and the instrument channel opening 210. Optionally, the connection between the mounting portion 1111 and the connecting portion 1112 is transitioned by an arc to avoid stress concentration leading to fracture and improve structural strength.

[0042] Furthermore, the first endoscope 200 includes a first tail sleeve 220, and a first receiving groove 1121 is flared to fit the outer peripheral side of the first tail sleeve 220, so that the two fit together, and the larger end of the first receiving groove 1121 is close to the hook 111. In actual use, the instrument channel opening 210 of the first endoscope 200 is located above the first tail sleeve 220. Under the action of gravity, the first endoscope 200 tends to move towards the smaller end of the first receiving groove 1121. By limiting the first tail sleeve 220 to the smaller end of the first receiving groove 1121, the first endoscope 200 is stably installed in the first receiving groove 1121. Similarly, the second endoscope 300 includes a handle with a middle section. The second receiving groove 1131 is flared to fit the outer peripheral side of the handle, so that the two fit together. The larger end of the second receiving groove 1131 is close to the hook 111, that is, the upper part is larger than the lower part. Under the action of gravity, the second endoscope 300 tends to move towards the smaller end of the second receiving groove 1131. The second tail sleeve limits the smaller end of the second receiving groove 1131, thereby achieving stable installation of the second endoscope 300 in the second receiving groove 1131.

[0043] Since the first mounting part 112 is connected to the lower end of the handle of the first endoscope 200, i.e. the first tail sleeve 220, its size is relatively small, and the second mounting part 113 is connected to the middle part of the handle of the second endoscope 300, the cross-sectional dimension of the middle part of the handle of the second endoscope 300 is larger than the cross-sectional dimension of the lower end of the handle of the first endoscope 200. Therefore, the slot size of the first receiving groove 1121 is smaller than the slot size of the second receiving groove 1131.

[0044] The connector 110 also includes a transition portion 115, which connects the first mounting portion 112 and the hook 111. The transition portion 115 is adapted to the actual structure of the first endoscope 200. The first mounting portion 112 and the hook 111 are connected through the transition portion 115, which is convenient for molding.

[0045] The connector 110 is a curved, thin-walled structure. The first mounting portion 112 is recessed inward to define a first receiving groove 1121 for assembling the first endoscope 200. The first mounting portion 112 covers the outer periphery of the first endoscope 200, and the coverage area of ​​the first receiving groove 1121 on the first endoscope 200 exceeds half of the circumferential surface of the first endoscope 200. Two extensions extend outward from the periphery of the first mounting portion 112 to form a second mounting portion 113, and a second receiving groove 1131 is formed between the two extensions. Specifically, it can be formed by stamping or other methods.

[0046] When using the reusable connecting device 100, first open the clamping structure 120, and then insert the first endoscope 200 into the first receiving groove 1121 through the opening 1132, the second receiving groove 1131, and the connecting port 114 in sequence. The hook 111 connects to the instrument channel port 210. Next, install the second endoscope 300 from the opening 1132 into the second receiving groove 1131. Finally, the clamping structure 120 is engaged in the slot 1135, thus connecting the first endoscope 200 and the second endoscope 300 via the connecting device. After use, open the clamping structure 120, remove the second endoscope 300 from the second receiving groove 1131, and remove the connecting device from the first endoscope 200. The structure is simple and the operation is convenient.

[0047] This embodiment also provides an endoscope system, including a first endoscope 200, a second endoscope 300, and a reusable connecting device 100 as described above. The reusable connecting device 100 is detachably connected to the first endoscope 200 and the second endoscope 300, respectively. By using the connecting device, the first endoscope 200 and the second endoscope 300 are connected, which facilitates operation; moreover, the connecting device can be reused, saving costs and reducing waste.

[0048] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A reusable connection device, characterized in that, For connecting a first endoscope (200) and a second endoscope (300), wherein the first endoscope (200) has an instrument channel port (210) on its peripheral side; the reusable connection device includes: The connector (110) includes a hook (111), a first mounting part (112), and a second mounting part (113). The first mounting part (112) is provided with a first receiving groove (1121) for wrapping around at least a portion of the outer peripheral surface of the first endoscope (200). The hook (111) is hung at the instrument channel opening (210). The second mounting part (113) is used for detachably connecting the second endoscope (300).

2. The reusable connection device according to claim 1, characterized in that, The second mounting part (113) is provided with a second receiving groove (1131), through which the second endoscope (300) passes and is received in the second receiving groove (1131).

3. The reusable connection device according to claim 2, characterized in that, A communication port (114) is provided between the first mounting part (112) and the second mounting part (113), the first receiving groove (1121) and the second receiving groove (1131) are connected to each other through the communication port (114), and the first endoscope (200) and the second endoscope (300) are fitted together at the communication port (114).

4. The reusable connection device according to claim 2 or 3, characterized in that, The second mounting part (113) also has an opening (1132) through which the second endoscope (300) can pass to be installed into the second receiving groove (1131).

5. The reusable connection device according to claim 4, characterized in that, The reusable connection device further includes a clamping structure (120) located at the opening (1132). The second mounting part (113) is connected to both ends of the clamping structure (120) on both sides of the opening (1132), so that the second mounting part (113) is tightened inward to clamp the second endoscope (300).

6. The reusable connection device according to claim 5, characterized in that, The clamping structure (120) has a protrusion (121) on the side facing the second receiving groove (1131), and the protrusion (121) is pressed against the outer peripheral surface of the second endoscope (300).

7. The reusable connection device according to claim 5, characterized in that, One end of the clamping structure (120) is rotatably connected to the second mounting part (113), and the other end is snapped, connected by a threaded part, connected by a strap, or inserted into the second mounting part (113) by a pin.

8. The reusable connection device according to claim 7, characterized in that, The clamping structure (120) is made of plastic, silicone or metal.

9. The reusable connection device according to claim 2, characterized in that, The sidewall of the first receiving groove (1121) is provided with a first anti-slip structure (130), and the first endoscope (200) forms an anti-slip connection with the first receiving groove (1121) through the first anti-slip structure (130), thereby restricting the relative sliding between the first endoscope (200) and the first receiving groove (1121); and / or The second receiving groove (1131) has a second anti-slip structure (140) on its side wall. The second endoscope (300) forms an anti-slip connection with the second receiving groove (1131) through the second anti-slip structure (140), which restricts the relative sliding between the second endoscope (300) and the second receiving groove (1131).

10. The reusable connection device according to claim 9, characterized in that, The first anti-slip structure (130) and the second anti-slip structure (140) are made of elastic materials with a coefficient of friction of not less than 0.

6.

11. The reusable connection device according to claim 9, characterized in that, The materials of the first anti-slip structure (130) and the second anti-slip structure (140) are silicone, nitrile rubber or fluororubber.

12. The reusable connection device according to claim 2, characterized in that, The first endoscope (200) includes a first tail sleeve (220), and the first receiving groove (1121) is flared to fit the outer peripheral side of the first tail sleeve (220) so that the two fit together; the second endoscope (300) includes a middle part of the handle, and the second receiving groove (1131) is flared to fit the outer peripheral side of the middle part of the handle so that the two fit together.

13. The reusable connection device according to claim 2, characterized in that, The connector (110) is a curved, thin-walled structure. The first mounting portion (112) is recessed inward to define the first receiving groove (1121) for assembling the first endoscope (200). The first mounting portion (112) wraps around the outer periphery of the first endoscope (200), and the coverage area of ​​the first receiving groove (1121) of the first endoscope (200) exceeds half of the circumferential surface of the first endoscope (200). Two extensions extend outward from the periphery of the first mounting portion (112) to form the second mounting portion (113), and the second receiving groove (1131) is formed between the two extensions.

14. The reusable connection device according to claim 1, characterized in that, The hook (111) includes a mounting part (1111) and a connecting part (1112) connected at an angle. The connecting part (1112) is connected to the first mounting part (112). The mounting part (1111) has a connecting hole (1113). The instrument channel opening (210) has an annular groove (211) on its periphery. The connecting hole (1113) is fitted into the annular groove (211).

15. The reusable connection device according to claim 1, characterized in that, The connector (110) further includes a transition portion (115) that connects the first mounting portion (112) and the hook (111), and the second mounting portion (113) is connected to the outer peripheral surface of the first mounting portion (112).

16. The reusable connection device according to claim 1, characterized in that, The outer peripheral surface of the tail sleeve of the first endoscope (200) is in contact with the outer peripheral surface of the second endoscope (300).

17. An endoscope system, characterized in that, It includes a first endoscope (200), a second endoscope (300), and a reusable connection device as described in any one of claims 1-16, wherein the reusable connection device is detachably connected to the first endoscope (200) and the second endoscope (300), respectively.

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