A connecting structure and an endoscope

Abstract

This invention relates to the field of endoscopy technology, and specifically discloses a connecting structure and an endoscope. The connecting structure includes a first connecting member, a second connecting member, and a transition tube. The first connecting member is provided with an irrigation port and a suction port. The second connecting member is provided with a first hole, a second hole, a first transition hole, and a second transition hole. The two ends of the transition tube are respectively connected to the first transition hole and the second transition hole. The first connecting member and the second connecting member are rotatably coupled, so that the irrigation port can be connected to either the first hole or the second hole, and the suction hole can be connected to the other. During the rotation switching process, the irrigation port is connected to the first transition hole, and the suction hole is connected to the second transition hole. The transition tube connects the first transition hole and the second transition hole to form a bypass independent of the irrigation channel and the suction channel, thereby ensuring the continuity of the irrigation and suction actions and avoiding damage to the irrigation pump and the suction pump caused by abrupt changes in the irrigation and suction channels.

Description

Technical Field

[0001] This invention relates to the field of endoscopy technology, and more particularly to an adapter structure and an endoscope. Background Technology

[0002] As a core tool for minimally invasive diagnosis and treatment, the stability of the endoscope's irrigation and aspiration functions directly affects the success rate of surgery and patient safety. Irrigation provides doctors with a clear view by filling the body cavity, lubricating tissues, and removing interfering substances, while aspiration is responsible for removing excess fluid, gas, stones, and diseased tissue. The two work together to form a closed loop for diagnosis and treatment.

[0003] When the size of the stone fragments exceeds the inner diameter of the aspiration channel, they are prone to becoming lodged and causing blockage, leading to surgical interruption. Existing technology attempts to solve this problem through a dual-channel switching structure: when aspiration is obstructed, the aspiration channel switches to an infusion channel, using high-pressure liquid to backwash the stone fragments, loosening them before re-entering the aspiration process. However, during the switching between the infusion and aspiration channels: the infusion pump experiences a sudden pressure surge due to the sudden closure of the infusion channel, which may cause pump vibration, pipeline shaking, or even mechanical damage; the aspiration pump experiences a sudden pressure drop due to the sudden closure of the aspiration channel, which may cause cavitation and damage the pump impeller or motor. Summary of the Invention

[0004] This invention discloses an adapter structure and an endoscope to solve the aforementioned technical problems existing in related technologies.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] In a first aspect, this application provides an adapter structure for use in an endoscope, the adapter structure comprising:

[0007] The first adapter is provided with an injection hole and a suction hole;

[0008] The second adapter has a first hole, a second hole, a first transition hole and a second transition hole, wherein the first transition hole and the second transition hole are located between the first hole and the second hole;

[0009] A transition tube, the two ends of which are respectively connected to the first transition hole and the second transition hole;

[0010] The first adapter and the second adapter are rotatably engaged, so that the injection hole can be connected to either the first hole or the second hole, and the suction hole is connected to the other one of the first hole and the second hole. During the rotational engagement of the first adapter and the second adapter, the injection hole is connected to the first transition hole, and the suction hole is connected to the second transition hole.

[0011] Secondly, this application provides an endoscope, which includes the aforementioned adapter structure.

[0012] The technical solution adopted in this invention can achieve the following beneficial effects:

[0013] The adapter structure and endoscope of the present invention, with the first adapter and the second adapter rotating in cooperation, enable switching between the endoscope's infusion channel and aspiration channel. During the intermediate stage of rotation of the first adapter and the second adapter, the infusion port connects to the first transition port, and the aspiration port connects to the second transition port, forming a temporary infusion-aspiration bypass. This infusion-aspiration bypass ensures that the infusion pump maintains normal and continuous infusion operation during the switching process, and also ensures that the aspiration pump maintains normal and continuous aspiration operation during the switching process. On the infusion side, it avoids the sudden pressure rise caused by the compressibility of the liquid, and avoids pump body vibration or pipeline vibration. On the aspiration side, it avoids the sudden pressure drop caused by the sudden change in the volume of the negative pressure chamber of the aspiration pump, and avoids cavitation, thereby protecting the impeller and motor of the aspiration pump. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is one of the structural schematic diagrams of the adapter structure in the embodiments of this application;

[0016] Figure 2 This is a second schematic diagram of the adapter structure according to an embodiment of this application;

[0017] Figure 3 This is a schematic diagram of the structure of the first adapter according to an embodiment of this application;

[0018] Figure 4 This is a schematic diagram of the structure of the second adapter according to an embodiment of this application;

[0019] Figure 5 This is one of the cross-sectional schematic diagrams of the adapter structure according to an embodiment of this application;

[0020] Figure 6 This is an exploded view of the adapter structure according to an embodiment of this application;

[0021] Figure 7 This is the third schematic diagram of the adapter structure in the embodiments of this application;

[0022] Figure 8 This is a second cross-sectional schematic diagram of the adapter structure according to an embodiment of this application;

[0023] Figure 9 This is a schematic diagram illustrating the use of the adapter structure of this application in an endoscope;

[0024] In the picture:

[0025] 100, First adapter; 110, Injection hole; 120, Suction hole; 130, Positioning recess; 140, First positioning part; 200, Second adapter; 210, First hole; 220, Second hole; 230, First transition hole; 240, Second transition hole; 250, Positioning protrusion; 260, Annular protrusion; 270, Groove; 300, Transition tube; 400, Limiting component; 410, Limiting part; 500, Transition component; 510, Second positioning part; 600, Sealing gasket; 700, First sleeve; 800, Second sleeve; 910, First pipeline; 920, Second pipeline; 930, Third pipeline; 940, Fourth pipeline. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0027] This application provides an adapter structure and an endoscope, which are described below in conjunction with the accompanying drawings. Figures 1-9 The adapter structure and endoscope provided in this application are described in detail through specific embodiments and application scenarios.

[0028] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 9This application discloses a transition structure for use with an endoscope, enabling the switching between an irrigation channel and aspiration channel during endoscope use. Specifically, the transition structure includes a first transition member 100, a second transition member 200, and a transition tube 300. The first transition member 100 is provided with an irrigation hole 110 and an aspiration hole 120. For example, the first transition member 100 can be a columnar structure. The irrigation hole 110 and the aspiration hole 120 are radially opposite each other on the first transition member 100, and the irrigation hole 110 and the aspiration hole 120 penetrate the first transition member 100 along its axial direction. The irrigation hole 110 can be connected to an irrigation pump through a first conduit 910, and the aspiration hole 120 can be connected to an aspiration pump through a second conduit 920.

[0029] Please see Figure 1 , Figure 2 and Figure 4 The second adapter 200 is provided with a first hole 210, a second hole 220, a first transition hole 230 and a second transition hole 240. The first transition hole 230 and the second transition hole 240 are located between the first hole 210 and the second hole 220. For example, the first transition hole 230 and the second transition hole 240 are radially opposite to each other on the second adapter 200. The first hole 210 and the second hole 220 are located on both sides of the distribution direction of the first transition hole 230 and the second transition hole 240, and the first hole 210 and the second hole 220 are symmetrical about the central axis of the second adapter 200. The two ends of the transition tube 300 are respectively connected to the first transition hole 230 and the second transition hole 240. For example, the first hole 210 is used to connect the third pipe 930, the second hole 220 is used to connect the fourth pipe 940, and the two ends of the transition pipe 300 are respectively connected to the first transition hole 230 and the second transition hole 240. When the first hole 210 is connected to the injection hole 110 and the second hole 220 is connected to the suction hole 120, the first pipe 910 and the third pipe 930 form an injection channel, and the second pipe 920 and the fourth pipe 940 form a suction channel.

[0030] In this embodiment, the first adapter 100 and the second adapter 200 are rotatably coupled, allowing the injection hole 110 to communicate with either the first hole 210 or the second hole 220, and the suction hole 120 to communicate with the other. Exemplarily, the adapter structure has a first state and a second state. In the first state, the injection hole 110 is connected to the first hole 210, and the suction hole 120 is connected to the second hole 220. At this time, the third conduit 930 constitutes part of the injection channel, and the fourth conduit 940 constitutes part of the suction channel. When the first adapter 100 and the second adapter 200 rotate relative to each other to switch to the second state, the injection hole 110 is connected to the second hole 220, and the suction hole 120 is connected to the first hole 210. At this time, the third conduit 930 constitutes part of the suction channel, and the fourth conduit 940 constitutes part of the injection channel. It should be noted that, in the embodiments of this application, the third tube 930 and the fourth tube 940 can be simultaneously disposed inside the endoscope, or, as... Figure 9 As shown, the third tube 930 can be located inside the endoscope, and the fourth tube 940 can be the sheath used when the endoscope is inserted into the human body.

[0031] In this embodiment of the application, during the rotational engagement of the first adapter 100 and the second adapter 200, the injection hole 110 is connected to the first transition hole 230, and the suction hole 120 is connected to the second transition hole 240.

[0032] In this embodiment of the application, taking the switching of the adapter structure from the first state to the second state as an example, in the first state, the injection hole 110 is only connected to the first hole 210, and the suction hole 120 is only connected to the second hole 220. When the first adapter 100 and the second adapter 200 rotate relative to each other, in the first half of the rotation, the injection hole 110 is connected to both the first hole 210 and the first transition hole 230. At this time, the suction hole 120 is connected to both the second hole 220 and the second transition hole 240, until the injection hole 110 and the first hole 210 are completely misaligned and separated. In the second half of the rotation, the injection hole 110 is connected to both the first transition hole 230 and the second hole 220. At this time, the suction hole 120 is connected to both the second transition hole 240 and the first hole 210, until the injection hole 110 and the first transition hole 230 are completely misaligned and separated, and the injection hole 110 is only connected to the second hole 220. At this time, the adapter structure completes the switching from the first state to the second state.

[0033] During the rotational engagement of the first adapter 100 and the second adapter 200, the connection between the first transition hole 230 and the second transition hole 240 via the transition pipe 300 forms a bypass independent of the priming channel and the suction channel. Since the transition pipe 300 provides a temporary diversion path, the priming channel will not be instantly cut off due to the gradual closing of the first hole 210, thus avoiding a sudden pressure rise caused by the compressibility of the liquid. This prevents vibration of the priming pump body or pipeline, thereby protecting the priming pump impeller, motor, and pipeline connectors, reducing the equipment failure rate. At the same time, it also prevents a sudden drop in pressure caused by a sudden change in the volume of the negative pressure chamber of the suction pump, avoiding cavitation and thus protecting the suction pump impeller and motor.

[0034] In this embodiment, the first adapter 100 can be a columnar structure. The injection hole 110 and the suction hole 120 pass through the first adapter 100 along its axial direction. The second adapter 200 has a receiving cavity and an opening communicating with the receiving cavity. The aforementioned first hole 210, second hole 220, first transition hole 230 and second transition hole 240 are provided on the bottom wall of the receiving cavity. A part of the first adapter 100 can be inserted into the receiving cavity through the opening to be inserted and engaged with the second adapter 200 in the axial direction, so that the injection hole 110 can rotate to correspond to one or both of the first hole 210, the first transition hole 230 and the second hole 220, and the suction hole 120 can rotate to correspond to one or both of the second hole 220, the second transition hole 240 and the first hole 210.

[0035] In a further technical solution, one of the first adapter 100 and the second adapter 200 is provided with a positioning protrusion 250, and the other is provided with a positioning recess 130. For example, the positioning protrusion 250 can be a cylindrical or annular protrusion located in the middle of the second adapter 200, and the positioning recess 130 is located in the first adapter 100, with its shape and size matching that of the positioning protrusion 250. This facilitates the insertion process between the first adapter 100 and the second adapter 200. During the process, the positioning protrusion 250 and the positioning recess 130 can provide a clear guide path. The initial positioning can be completed simply by aligning the positioning protrusion 250 with the positioning recess 130, which significantly shortens the assembly time of the first adapter 100 and the second adapter 200. On the other hand, the positioning protrusion 250 and the positioning recess 130 can ensure that the axis of the first adapter 100 and the axis of the second adapter 200 coincide, avoiding rotational vibration or uneven friction caused by eccentricity, and improving the stability of their rotation.

[0036] In the embodiments of this application, please refer to Figure 2 , Figure 5 , Figure 6 , Figure 7 and Figure 8The adapter structure may also include a limiting member 400, which may be a cylindrical structure. The inner side of the limiting member 400 is provided with an internal thread, and the limiting member 400 is provided with a radially protruding limiting part 410 at one end in the axial direction. The outer side of the second adapter 200 is provided with an external thread. After the first adapter 100 and the second adapter 200 are inserted and engaged, the limiting member 400 is threadedly engaged with the outer side of the second adapter 200 and abuts against the first adapter 100 axially through the limiting part 410. The limiting part 410 applies an axial force to the first adapter 100, thereby preventing the first adapter 100 from axially disengaging from the second adapter 200.

[0037] In the embodiments of this application, please continue to refer to Figure 5 , Figure 6 and Figure 8 The second adapter 200 is provided with a slot 270, which has a first sidewall and a second sidewall distributed in the circumferential direction. The first adapter 100 is provided with a first positioning part 140. When the first adapter 100 rotates relative to the second adapter 200, the first positioning part 140 can abut against the first sidewall or the second sidewall. When the first positioning part 140 abuts against the first sidewall, the adapter structure is in a first state, at which time the injection hole 110 is opposite to and connected to the first hole 210, and the suction hole 120 is opposite to and connected to the second hole 220. When the first positioning part 140 abuts against the second sidewall, the adapter structure is in a second state. At this time, the injection hole 110 is opposite to and connected to the second hole 220, and the suction hole 120 is opposite to and connected to the first hole 210. That is to say, the first sidewall and the second sidewall of the slot 270 can be rigidly contacted with the first positioning part 140 to limit the rotation stroke of the first adapter 100 relative to the second adapter 200. When the relative rotation reaches the limit position, it can ensure that the injection hole 110 is aligned with the first hole 210 or the second hole 220, and at the same time ensure that the suction hole 120 is aligned with the second hole 220 or the first hole 210, thereby ensuring the sealing and flow efficiency of the formed injection channel and suction channel, and avoiding leakage or flow fluctuation.

[0038] For further technical solutions, please refer to [link / reference]. Figure 5 , Figure 6 and Figure 8The transition structure may also include a transition member 500, which is located between the limiting member 400 and the first transition member 100. For example, the transition member 500 may be an annular member, and the transition member 500 is sleeved on the outer periphery of the first transition member 100. The outer periphery of the first transition member 100 is provided with a stepped surface that abuts against the transition member 500. One side of the transition member 500 abuts against the stepped surface, and the other side of the transition member 500 abuts against the limiting part 410. The limiting member 400 applies an axial force to the first transition member 100 by abutting against the transition member 500. In this embodiment of the application, the transition member 500 and the second adapter 200 are engaged in a circumferential direction. For example, the transition member 500 is provided with a radially protruding second positioning part 510. The second positioning part 510 extends along the circumferential direction of the transition member 500. The second positioning part 510 can be located in the aforementioned slot 270, and the second positioning part 510 abuts against the first sidewall and the second sidewall on both sides of its circumferential direction, so as to engage with the second adapter 200 in a circumferential direction.

[0039] With this configuration, in the axial direction, the first adapter 100 is isolated from the limiting member 400 through the transition member 500, while in the radial direction, the limiting part 410 of the limiting member 400 can have a radial gap with the first adapter 100. When the operator rotates the first adapter 100 to change the state of the adapter structure, there will be no frictional contact between the first adapter 100 and the limiting member 400. This will prevent the limiting member 400 from rotating and becoming loose with the second adapter 200, thereby ensuring the stability of the insertion and engagement between the first adapter 100 and the second adapter 200.

[0040] In this embodiment, the adapter structure further includes a sealing gasket 600, which is disposed between the first adapter 100 and the second adapter 200. Specifically, the sealing gasket 600 is disposed between the end face of the first adapter 100 and the bottom wall of the receiving cavity to form an end face seal. The sealing gasket 600 is provided with holes corresponding to the first hole 210, the second hole 220, the first transition hole 230, and the second transition hole 240. During the rotation of the first adapter 100 relative to the second adapter 200, there is a certain gap between the end face of the first adapter 100 and the bottom wall of the receiving cavity. With the setting of the sealing gasket 600, during the rotation of the first adapter 100, the sealing gasket 600 can fill the micro gap of the end face through elastic deformation, thereby preventing fluid from seeping out from the adapter surface.

[0041] In a further technical solution, the second adapter 200 is provided with annular protrusions 260 at the corresponding first hole 210, second hole 220, first transition hole 230 and second transition hole 240. The annular protrusions 260 can be embedded in the holes on the sealing gasket 600 to achieve positioning and engagement. With this configuration, there is friction between the first adapter 100 and the sealing gasket 600 during rotation, which causes the sealing gasket 600 to have a tendency to move and / or rotate. The arrangement of multiple annular protrusions 260 can limit the translation and / or rotation of the sealing gasket 600 in the plane, thereby preventing the sealing gasket 600 from blocking the communication between the injection hole 110 and / or suction hole 120 and the first hole 210 and / or second hole 220. This ensures that the injection hole 110 and / or suction hole 120 are aligned with the first hole 210 and / or second hole 220 in the working state, ensuring that the flow rate of fluid injection and fluid suction tends to be stable.

[0042] In a further technical solution, the extension length of the annular protrusion 260 in the axial direction of the second adapter 200 is less than the thickness of the sealing gasket 600, which can prevent the annular protrusion 260 from protruding from the surface of the sealing gasket 600 and avoid the situation where the first adapter 100 hits the annular protrusion 260 during rotation.

[0043] In this embodiment, the adapter structure may further include a first sleeve 700, which is connected to the outside of the first adapter 100 and is circumferentially limited to the first adapter 100. For example, the first adapter 100 is provided with grooves distributed along its circumference, and the first sleeve 700 is provided with protrusions distributed along its circumference. The protrusions are engaged in the grooves. When the first sleeve 700 is rotated under force, it can drive the first adapter 100 to rotate together. With this configuration, on the one hand, it can provide a clearance for the assembly of the limiting member 400 before assembling the first sleeve 700, ensuring that the limiting member 400 is smoothly assembled into place. Thus, the first adapter 100 is constrained by the axial force applied by the transition member 500. On the other hand, the first sleeve 700 has a large outer diameter, making it easier for the operator to apply force, thereby improving the accuracy and efficiency of the operation. For example, the outer periphery of the first sleeve 700 is provided with anti-slip textures distributed along its circumference. When the state of the adjustment transition structure is rotated, the anti-slip textures greatly increase the friction between the hand and the sleeve, improving the ease of operation.

[0044] In this embodiment, the adapter structure may further include a second sleeve 800. The second sleeve 800 is threaded onto the outside of the second adapter 200, and the second sleeve 800 abuts against the limiting member 400 in the axial direction. The threaded engagement itself has self-locking properties. When the second sleeve 800 is rotated and installed onto the second adapter 200, the limiting member 400 is firmly abutted against by the second sleeve 800 in the axial direction, and its position is precisely fixed. It will not cause unnecessary displacement due to external forces such as vibration and impact, thereby ensuring the working stability of the entire adapter structure.

[0045] This application also discloses an endoscope, such as... Figure 9 As shown, the disclosed endoscope includes the aforementioned adapter structure.

[0046] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0047] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A connector structure for use in an endoscope, characterized in that, include: The first adapter (100) is provided with an injection hole (110) and a suction hole (120). The second adapter (200) is provided with a first hole (210), a second hole (220), a first transition hole (230) and a second transition hole (240), wherein the first transition hole (230) and the second transition hole (240) are located between the first hole (210) and the second hole (220); A transition tube (300) is provided, with its two ends connected to the first transition hole (230) and the second transition hole (240), respectively. The first adapter (100) and the second adapter (200) are rotatably engaged, so that the injection hole (110) can be connected to either the first hole (210) or the second hole (220), and the suction hole (120) is connected to the other of the first hole (210) and the second hole (220). During the rotational engagement of the first adapter (100) and the second adapter (200), the injection hole (110) is connected to the first transition hole (230), and the suction hole (120) is connected to the second transition hole (240).

2. The adapter structure according to claim 1, characterized in that, It also includes a limiting member (400), the first adapter (100) and the second adapter (200) are inserted into each other in the axial direction, and the limiting member (400) is threaded into the second adapter (200) to apply an axial force to the first adapter (100) so that the first adapter (100) and the second adapter (200) abut against each other in the axial direction.

3. The adapter structure according to claim 2, characterized in that, It also includes a transition piece (500) located between the limiting piece (400) and the first adapter (100). The transition piece (500) and the second adapter (200) are in a circumferential engagement. The limiting piece (400) applies an axial force to the first adapter (100) through the transition piece (500).

4. The adapter structure according to claim 1, characterized in that, One of the first adapter (100) and the second adapter (200) is provided with a positioning protrusion (250) and the other is provided with a positioning recess (130), wherein the positioning protrusion (250) and the positioning recess (130) are positioned and engaged.

5. The adapter structure according to claim 1, characterized in that, It also includes a sealing gasket (600), which is disposed between the first adapter (100) and the second adapter (200). The sealing gasket (600) has holes corresponding to the first hole (210), the second hole (220), the first transition hole (230) and the second transition hole (240).

6. The adapter structure according to claim 5, characterized in that, The second adapter (200) is further provided with annular protrusions (260) at the corresponding first hole (210), second hole (220), first transition hole (230) and second transition hole (240). The annular protrusions (260) are positioned and engaged with the holes, and the extension length of the annular protrusions (260) in the axial direction of the second adapter (200) is less than the thickness of the sealing gasket (600).

7. The adapter structure according to claim 1, characterized in that, The second adapter (200) is provided with a slot (270), the slot (270) has a first sidewall and a second sidewall distributed in the circumferential direction, and the first adapter (100) is provided with a first positioning part (140), the first positioning part (140) can abut against the first sidewall or the second sidewall; When the first positioning part (140) abuts against the first sidewall, the injection hole (110) is connected to the first hole (210), and the suction hole (120) is connected to the second hole (220). When the first positioning part (140) abuts against the second sidewall, the injection hole (110) is connected to the second hole (220), and the suction hole (120) is connected to the first hole (210).

8. The adapter structure according to claim 1, characterized in that, It also includes a first sleeve (700), which is connected to the outside of the first adapter (100), and the first sleeve (700) and the first adapter (100) are in a circumferential upper limit engagement.

9. The adapter structure according to claim 2, characterized in that, It also includes a second sleeve (800), which is threaded onto the outside of the second adapter (200), and the second sleeve (800) abuts axially against the limiting member (400).

10. An endoscope, characterized in that, Includes the adapter structure described in any one of claims 1 to 9.

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