Sealing valve for endoscope

Abstract

The utility model provides a sealing valve for an endoscope, which relates to the technical field of medical instruments, and comprises a valve main body, the valve main body comprises a main pipe and a branch pipe, the branch pipe is used as a liquid / gas injection port, a second end of the main pipe is provided with a sealing assembly, and the sealing assembly comprises a mounting sleeve, a first sealing piece, an isolation sleeve, a second sealing piece and a cover plate. The first sealing piece, the isolation sleeve and the second sealing piece are all arranged in the installation sleeve, the first sealing piece and the second sealing piece are arranged on the two sides of the isolation sleeve respectively and abut against the isolation sleeve, a notch is formed in the first sealing piece, a through hole is formed in the second sealing piece, and the cover plate abuts against one end of the installation sleeve. According to the sealing structure, after the minimally invasive medical instrument enters the main valve body through the instrument inlet of the sealing valve, during liquid injection or gas injection, the instrument inlet does not need to be locked, that is, the minimally invasive medical instrument can still be freely operated during liquid injection or gas injection, and the operation time is effectively shortened.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a sealing valve for endoscopes. Background Art

[0002] With the development of medical science and technology, minimally invasive surgery using endoscopes has gradually become the mainstream treatment for gastrointestinal diseases. An endoscope itself, as an examination instrument, cannot perform surgery. It typically requires a surgeon to use minimally invasive medical instruments, passing them through the endoscope's aperture to reach the target lesion. The surgeon then uses these instruments to perform the appropriate surgical procedure at the lesion site.

[0003] During surgical procedures, surgeons sometimes need to inject liquids or gases into the lesion site. These injections are typically done through the injection port on a minimally invasive medical device. However, some minimally invasive medical devices do not have injection ports, or the single injection port cannot meet the needs of the surgical procedure in a short time. As a result, sealing valves that work in conjunction with the endoscope's forceps port have emerged.

[0004] However, existing sealing valves used in conjunction with endoscope forceps ports, such as the Y-type connecting valve disclosed in patent CN114768082A, require the threads at the sealing valve inlet to be tightened before liquid or gas can be injected after the minimally invasive medical device enters the valve body through the sealing valve inlet (otherwise, liquid or gas will flow out from the sealing valve inlet). This method of tightening the sealing valve inlet prevents the surgeon from operating the minimally invasive medical device simultaneously during liquid or gas injection, thus prolonging the operation time. Utility Model Content

[0005] This utility model discloses a sealing valve for endoscopes, which solves the problem that existing sealing valves require locking the threads at the instrument inlet before liquid or gas injection can be performed, preventing the surgeon from simultaneously operating the instrument and prolonging the operation time. The new valve eliminates the need for a threaded locking cap; when the instrument enters the valve body for liquid or gas injection, the inlet is not locked, allowing the surgeon to freely operate the instrument while it is being injected. This design is simple and effectively shortens the operation time.

[0006] To achieve the above objectives, the technical solution of this utility model is specifically implemented as follows:

[0007] This utility model discloses a sealing valve for an endoscope, comprising a valve body, the valve body including a main pipe and a branch pipe at a certain angle to the main pipe, the branch pipe being connected to the main pipe, a first end of the main pipe being adapted to an endoscope for connecting the endoscope, and a second end of the main pipe forming an instrument inlet for minimally invasive medical devices to enter the main pipe, characterized in that a sealing assembly is provided at the second end of the main pipe, the sealing assembly including an installation sleeve, a first sealing element, an isolation sleeve, a second sealing element, and a cover plate, the first sealing element, the isolation sleeve, and the second sealing element being disposed within the installation sleeve, the first sealing element and the second sealing element being respectively disposed on both sides of the isolation sleeve and abutting against the isolation sleeve, the first sealing element having a slit, the second sealing element having a through hole, and the cover plate pressing against the end of the installation sleeve near the second sealing element.

[0008] Furthermore, the cut is in the shape of a cross.

[0009] Furthermore, the through hole is a circular through hole, and the diameter of the through hole is smaller than the outer diameter of the operating end of the minimally invasive medical device.

[0010] Furthermore, the cut is positioned opposite to the through hole.

[0011] Furthermore, the minimally invasive medical device enters the main tube from the device inlet direction through the sealing assembly.

[0012] Furthermore, the inner wall of the mounting sleeve is formed with an annular limiting boss extending circumferentially thereon.

[0013] Furthermore, the first seal includes an outer edge portion and a central portion, the central portion being recessed relative to the outer edge portion, the outer edge portion abutting against the limiting boss, and the cut being formed in the central portion.

[0014] Beneficial technical effects:

[0015] 1. This utility model discloses a sealing valve for endoscopes, including a valve body, the valve body including a main pipe and a branch pipe at a certain angle to the main pipe, the branch pipe being connected to the main pipe, the branch pipe serving as a liquid / gas injection port, and providing a separate liquid / gas injection channel;

[0016] 2. This utility model discloses a sealing valve for endoscopes. The second end of the main pipe has an instrument inlet for minimally invasive medical devices to enter the main pipe. A sealing assembly is provided at the second end of the main pipe. The sealing assembly includes an installation sleeve, a first sealing element, an isolation sleeve, a second sealing element, and a cover plate. The first sealing element, the isolation sleeve, and the second sealing element are all disposed within the installation sleeve. The first sealing element and the second sealing element are respectively disposed on both sides of the isolation sleeve and abut against the isolation sleeve. A slit is formed on the first sealing element, and a through hole is formed on the second sealing element. The cover plate presses against the end of the installation sleeve near the second sealing element. The minimally invasive medical device enters the main pipe through the sealing assembly without the need for a threaded locking cap. When the minimally invasive medical device enters the valve body through the instrument inlet of the sealing valve for liquid or gas injection, the instrument inlet is not locked, allowing free operation of the minimally invasive medical device while injecting liquid or gas, effectively shortening the operation time. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 This is a schematic cross-sectional view of the overall structure of the sealing valve for an endoscope according to the present invention;

[0019] Figure 2 An exploded structural diagram of a sealing valve for an endoscope according to the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the first sealing element in the sealing valve for an endoscope according to the present invention;

[0021] Figure 4 This is a front view of the first sealing element in the sealing valve for an endoscope according to the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the second sealing element in the sealing valve for an endoscope according to the present invention.

[0023] Among them, 1-valve body, 11-main pipe, 111-first end, 112-second end, 113-instrument inlet, 12-branch pipe, 13-installation sleeve, 14-first seal, 141-cutout, 142-outer edge, 143-center, 15-isolation sleeve, 16-second seal, 161-through hole, 17-cover plate. DETAILED DESCRIPTION

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0026] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] Existing endoscopic sealing valves require a locking cap to tighten the threads at the instrument inlet after the minimally invasive medical device enters the valve body through the instrument inlet before liquid / gas injection can proceed (otherwise, liquid or gas will leak out from the instrument inlet). Tightening the threads at the instrument inlet prevents the minimally invasive medical device from operating freely. In other words, existing sealing valves cannot simultaneously operate the minimally invasive medical device during liquid / gas injection, resulting in prolonged surgery time and failing to meet actual clinical needs. To solve this problem, this utility model discloses a sealing valve.

[0028] This utility model discloses a sealing valve for endoscopes, see [link / reference]. Figure 1-2 Specifically, it includes a valve body 1, which includes a main pipe 11 and a branch pipe 12 inclined at a certain angle to the main pipe 11. The branch pipe 12 is connected to the main pipe 11, and the inlet of the branch pipe 12 is a liquid / air injection port, serving as an independent liquid / air injection port. The first end 111 of the main pipe 11 is adapted to an endoscope for connecting to the endoscope's access port. Here, the endoscope can be a cholangioscope, duodenoscope, etc., but is not limited to cholangioscopes and duodenoscopes. The second end 112 of the main pipe 11 is formed to allow minimally invasive medical devices to enter the main pipe 11. Medical device entry 113, minimally invasive medical devices may include, but are not limited to, hemostatic clips, snares, sampling forceps, mucosal incision knives, etc. Minimally invasive medical devices include an operating end and an execution end. The operating end generally includes a handle and a slip ring. The slip ring is slidably set on the handle. The operating end generally includes an elastic tube, a cable and an end effector. One end of the elastic tube is connected to the handle, and the end effector is located at the end of the elastic tube away from the handle. The cable is slidably inserted in the elastic tube. One end of the cable is driven to the end effector, and the other end is driven to the slip ring.

[0029] In one embodiment of this utility model, a sealing assembly is provided at the second end 112 of the main tube 11. The minimally invasive medical device enters through the instrument inlet 113 and passes through the sealing assembly into the main tube 11. Specifically, the sealing assembly includes an installation sleeve 13, a first sealing element 14, an isolation sleeve 15, a second sealing element 16, and a cover plate 17. The first sealing element 14, the isolation sleeve 15, and the second sealing element 16 are all disposed within the installation sleeve 13. Preferably, an annular limiting boss extending in its circumferential direction is formed on the inner wall of the installation sleeve 13. The first sealing element 14 includes an outer edge portion 142 and a central portion 143. See [reference needed]. Figures 3-4 The central portion 143 is recessed relative to the outer edge 142. In the sealing assembly, this can be understood as the central portion 143 protruding away from the isolation sleeve 15. The outer edge 142 of the first seal 14 abuts against the limiting boss inside the mounting sleeve 13. A cross-shaped cutout 141 is formed at the center of the central portion 143. The second seal 16 is disc-shaped. See [reference needed]. Figure 5 The second sealing element 16 has a circular through hole 161 at its center. The cut 141 and the through hole 161 are positioned opposite each other. Preferably, the diameter of the circular through hole 161 is smaller than the outer diameter of the operating end (handle) of the minimally invasive medical device. When the actuating end of the minimally invasive medical device passes through the second sealing element 16, the second sealing element 16 will tightly wrap the minimally invasive medical device to achieve a sealing effect. The first sealing element 14 and the second sealing element 16 are respectively disposed on both sides of the isolation sleeve 15 and abut against the isolation sleeve 15. The cover plate 17 presses against the end of the mounting sleeve 13 near the second sealing element 16.

[0030] The working process of the endoscope sealing valve disclosed in this utility model includes sealing when the minimally invasive medical device has not entered the main valve body and sealing after the minimally invasive medical device enters the main valve body through the instrument inlet. The sealing principle of the sealing valve disclosed in this utility model in the two working processes is explained below using the liquid injection process as an example:

[0031] The sealing principle when the minimally invasive medical device does not enter the main valve body is as follows:

[0032] When the minimally invasive medical device does not enter the main valve body through the device inlet, liquid is injected from the inlet of the branch tube 12. When the liquid flows in the main valve body, the cut 141 on the first seal 14 is closed due to the side wall of the liquid extrusion component 14, thereby sealing the device inlet and achieving a sealing effect.

[0033] The sealing principle of minimally invasive medical devices after entering the main valve body through the device inlet is as follows:

[0034] When the minimally invasive medical device enters the main valve body through the device inlet, it passes through the second seal 16 and the first seal 14 in sequence. At this time, liquid is injected through the inlet of the branch tube 12. Because the minimally invasive medical device destroys the sealing function of the first seal 14 (after the minimally invasive medical device passes through the first seal 14, it will open the incision 141 on the first seal 14), the first seal 14 cannot achieve a sealing effect. The liquid reaches the second seal 16 through the first seal 14. However, because the diameter of the circular through hole 161 on the second seal 16 is smaller than the outer diameter of the operating end of the minimally invasive medical device, when the minimally invasive medical device passes through the second seal 16, the second seal 16 will tightly wrap around the minimally invasive medical device to achieve a sealing effect. Therefore, the liquid that reaches the second seal 16 will not flow out through the second seal 16.

[0035] The sealing principle of this sealing valve after a minimally invasive medical device enters the main valve body through the instrument inlet shows that the sealing valve disclosed in this utility model does not require a threaded locking cap. When the minimally invasive medical device enters the valve body through the instrument inlet of the sealing valve and is injected with liquid or gas, the instrument inlet is not locked, allowing the minimally invasive medical device to be operated freely while injecting liquid or gas, effectively shortening the operation time.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The above embodiments are merely descriptions of preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A sealing valve for an endoscope, comprising a valve body (1), the valve body (1) comprising a main pipe (11) and a branch pipe (12) at a certain angle to the main pipe (11), the branch pipe (12) being connected to the main pipe (11), a first end (111) of the main pipe (11) being adapted to an endoscope for connecting the endoscope, and a second end (112) of the main pipe (11) forming an instrument inlet (113) for a minimally invasive medical device to enter the main pipe (11), characterized in that, The second end (112) of the main tube (11) is provided with a sealing assembly, which includes an installation sleeve (13), a first seal (14), an isolation sleeve (15), a second seal (16), and a cover plate (17). The first seal (14), the isolation sleeve (15), and the second seal (16) are all disposed inside the installation sleeve (13). The first seal (14) and the second seal (16) are respectively disposed on both sides of the isolation sleeve (15) and abut against the isolation sleeve (15). A cut (141) is formed on the first seal (14), and a through hole (161) is formed on the second seal (16). The cover plate (17) presses against the end of the installation sleeve (13) near the second seal (16).

2. The sealing valve for an endoscope according to claim 1, characterized in that, The incision (141) is in the shape of a cross.

3. The sealing valve for an endoscope according to claim 1, characterized in that, The through hole (161) is a circular through hole, and the diameter of the through hole (161) is smaller than the outer diameter of the operating end of the minimally invasive medical device.

4. The sealing valve for an endoscope according to claim 1, characterized in that, The cut (141) is positioned opposite to the through hole (161).

5. A sealing valve for an endoscope according to claim 1, characterized in that, The minimally invasive medical device enters the main tube (11) from the device inlet direction through the sealing assembly.

6. A sealing valve for an endoscope according to claim 1, characterized in that, The inner wall of the mounting sleeve (13) is formed with an annular limiting boss extending circumferentially thereon.

7. A sealing valve for an endoscope according to claim 6, characterized in that, The first seal (14) includes an outer edge portion (142) and a central portion (143), the central portion (143) being recessed relative to the outer edge portion (142), the outer edge portion (142) abutting against the limiting boss, and the cut (141) being formed in the central portion (143).

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