Endoscopic biopsy hole one-way valve device

Abstract

The utility model discloses an endoscope biopsy hole one-way valve device which comprises a valve body, the valve body is provided with a filter layer, an isolation layer and a biopsy forceps moving opening, the filter layer is provided with a filter one-way opening, the isolation layer is provided with an isolation one-way opening, and the biopsy forceps moving opening is located on the side, away from the filter layer, of the isolation layer; the valve cover is detachably connected with the valve body, the valve cover is provided with a pressure relief opening, and the pressure relief opening is communicated with the biopsy forceps movable opening; the valve cover is provided with a clamping table which is matched with the valve body; the valve body is provided with a clamping groove, and the clamping table is matched with the clamping groove. The valve body is provided with a locking table which abuts against the clamping table. The valve cover is provided with a locking groove, and the locking table is matched with the locking groove; in the closed state, the clamping table is arranged in the clamping groove, and the locking table is arranged in the locking groove, and in the open state, the clamping table is far away from the clamping groove, and the locking table is far away from the locking groove. Through the arrangement of the filtering layer and the isolating layer, liquid or polluting gas and the like on the inner side can be effectively prevented from overflowing, the pollution risk is reduced, and the operation environment is kept clean.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a one-way valve device for an endoscopic biopsy port. Background Technology

[0002] Endoscopic biopsy is a crucial procedure in clinical diagnosis and treatment. However, during the biopsy process, the insertion and removal of instruments and the extraction of tissue samples can lead to liquid or gas leakage inside the biopsy port. Traditional biopsy port valves have simple structures, typically relying on a single sealing mechanism for closure, which is insufficient to effectively prevent liquid splashing or gas escape. Especially during the procedure, pressure changes can easily cause contaminant leakage, affecting the safety and cleanliness of the surgical environment. Furthermore, existing valve devices often fail to balance sealing and operational flexibility during biopsy forceps insertion or withdrawal, potentially leading to backflow of liquid or gas diffusion, increasing the risk of cross-infection. While some designs attempt to improve sealing by adding sealing rings or complex structures, these suffer from inconvenient disassembly and maintenance, failing to meet the demands for high efficiency and convenience in clinical practice. Therefore, this paper proposes a one-way valve device for endoscopic biopsy ports that effectively isolates liquid splashing, filters gas, and is easy to disassemble and clean, thereby improving operational safety and ease of use. Utility Model Content

[0003] This utility model aims to solve at least one of the above-mentioned technical problems.

[0004] To address the aforementioned problems, the primary objective of this utility model is to provide a one-way valve device for endoscopic biopsy ports, comprising: a valve body, the valve body having a filter layer, the filter layer having a one-way filter port; and a valve cover, the valve cover being detachably connected to the valve body.

[0005] The filter layer effectively prevents internal liquids such as blood and irrigation fluid from splashing out, reducing the risk of contamination and maintaining a clean operating environment. The filter layer selectively filters gases, reducing the possibility of cross-infection or the spread of harmful gases. The valve cover and valve body are detachably connected, facilitating quick disassembly, cleaning, or component replacement, extending the device's lifespan and meeting medical sterilization requirements. During biopsies or instrument insertion / extraction, the one-way valve structure maintains the seal of the endoscope channel, preventing gas or liquid leakage, such as in the pneumatic environment of gastroscopy and colonoscopy, ensuring a stable surgical field. Its simple structure adapts to standard endoscopic biopsy ports, requiring no additional complex operations for installation and use, improving medical efficiency.

[0006] In the above technical solution, the valve body is provided with an isolation layer, and the isolation layer is provided with an isolation one-way port.

[0007] The valve body features an added isolation layer with a one-way isolation port, further enhancing the device's sealing, safety, and functionality. The one-way isolation port and the filter one-way port form a multi-stage one-way valve structure, further preventing backflow of bodily fluids, blood, or contaminants into the endoscope channel, reducing the risk of cross-infection. The isolation layer intercepts tiny debris, such as mucus and tissue residue, that is not completely blocked by the filter layer, reducing the risk of blockage at the rear of the valve body or the endoscope channel, and extending the device's cleaning cycle. If the filter layer is damaged due to instrument friction, the isolation layer provides backup protection as a redundant design, improving the device's fault tolerance, especially suitable for long-duration or high-frequency biopsy procedures.

[0008] In any of the above technical solutions, the valve body is provided with a biopsy forceps movable port, which is located on the side of the isolation layer away from the filter layer, and the biopsy forceps movable port is fan-shaped.

[0009] The movable port of the biopsy forceps allows for unrestricted movement, facilitating operations such as rotating the forceps. Forcing the forceps through the one-way valve orifice of a filter or isolation layer can cause the forceps to bend and rub against the valve orifice edge, accelerating wear on the sealing structure. The movable port allows the forceps to operate along a non-linear path, protecting the one-way valve's seal. The fan-shaped opening facilitates cleaning of the movable port, preventing dust accumulation.

[0010] In any of the above technical solutions, the valve cover is provided with a pressure relief port, which is connected to the movable port of the biopsy forceps.

[0011] When the valve cover is pulled out, the negative pressure may adhere to the forceps, increasing the force required for operation. The pressure relief port balances the internal and external air pressure, allowing the biopsy forceps to slide in and out more smoothly, reducing surgeon hand fatigue, and is especially suitable for prolonged surgeries. The pressure relief port can be designed with a one-way venting structure, such as a microporous membrane or a duckbill valve, allowing gas to escape while preventing liquid or contaminant splashes, meeting infection control requirements.

[0012] In any of the above technical solutions, the valve cover is provided with a locking platform, which cooperates with the valve body.

[0013] The locking mechanism and valve body form a mechanical interlock structure, ensuring that the valve cover will not accidentally loosen or fall off. This rigid connection method is more reliable than traditional threaded or friction fits. The specific geometry of the locking mechanism ensures that the valve cover can only be installed in the correct orientation, preventing it from being installed backwards. Because the valve cover is made of medical-grade silicone, even with the locking mechanism, it can be easily removed manually.

[0014] In any of the above technical solutions, the valve body is provided with a slot, and the slot and the mounting plate cooperate with each other.

[0015] The specific shape of the slot and mounting plate ensures that the valve cover can only be installed in one correct orientation, avoiding seal failure due to incorrect rotation or inversion. The circumferential support of the slot ensures even stress distribution on the valve cover, preventing deformation or leakage caused by stress concentration on one side. Installation or removal is usually completed simply by pushing in or pulling out in a straight line, saving more time than traditional multi-turn threads. When the mounting plate is pressed into the slot, it forces the valve cover to fit tightly against the valve body. O-rings or silicone gaskets can be embedded in the slot to further block liquid or gas leakage paths. The slot is designed on the valve body, while the mounting plate is located on the replaceable valve cover; after wear, only the valve cover needs to be replaced, reducing maintenance costs. The combined structure of the slot and mounting plate ensures that the valve cover will not burst open under high pressure.

[0016] In any of the above technical solutions, the valve body is provided with a locking platform, which abuts against the locking platform.

[0017] The locking and clamping surfaces abut against each other to form a rigid stop, ensuring that the valve cover will not easily shift or pop out when subjected to internal pressure such as inflation. The locking surface bears the main mechanical stress, protecting the critical mating areas of the clamping surface and the valve body. The abutting surfaces of the locking and clamping surfaces are designed as flat or wedge-shaped to ensure uniform force distribution on the valve cover and avoid localized sealing failure.

[0018] In any of the above technical solutions, the valve cover is provided with a locking groove, and the locking platform cooperates with the locking groove.

[0019] After the locking platform is embedded in the locking groove, a three-dimensional mechanical interlock is formed, providing both lateral and longitudinal fixation, which is more resistant to vibration and tension than simple planar contact. When high pressure is generated during endoscope inflation or flushing, the surrounding structure of the locking groove prevents the locking platform from slipping out, avoiding the valve cover being forced open by pressure. The guide ramp structure of the locking groove ensures that the valve cover can only slide into place along a single path, eliminating poor sealing caused by misaligned installation. The depth of the locking groove is slightly less than the height of the locking platform, creating elastic pre-compression for better sealing and locking performance.

[0020] In any of the above technical solutions, the one-way valve device for the endoscopic biopsy port includes a closed state and an open state. In the closed state, the cladding stage is placed in the cladding slot and the locking stage is placed in the locking slot; in the open state, the cladding stage is away from the cladding slot and the locking stage is away from the locking slot.

[0021] The check valve device switches between closed and open states by inserting or removing the valve cover. When inserting, forcefully push it in so that the locking plate is placed in the locking groove and the locking plate is placed in the locking groove to form a lock, and the check valve device enters the closed state. When removing, the locking plate moves away from the locking groove and the locking plate moves away from the locking groove, that is, the valve cover moves away from the valve body, and the check valve device enters the open state. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be discussed below. Obviously, the technical solutions described in conjunction with the accompanying drawings are only some embodiments of this utility model. For those skilled in the art, other embodiments and their accompanying drawings can be obtained from the embodiments shown in these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of a one-way valve device for an endoscope biopsy port provided in an embodiment of this utility model.

[0024] Figure 2 This is another schematic diagram of a one-way valve device for an endoscope biopsy port provided in an embodiment of this utility model.

[0025] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0026] Figure 4 This is another schematic diagram of a one-way valve device for an endoscope biopsy port provided in an embodiment of this utility model.

[0027] Figure 5 This is another schematic diagram of a one-way valve device for an endoscope biopsy port provided in an embodiment of this utility model.

[0028] Figure 6 This is another schematic diagram of a one-way valve device for an endoscope biopsy port provided in an embodiment of this utility model.

[0029] In the diagram: 100-valve body, 110-filter layer, 111-filter one-way port, 120-isolation layer, 121-isolation one-way port, 130-biopsy forceps movable port, 140-slot, 150-locking platform, 200-valve cover, 210-slot, 220-locking slot, 230-pressure relief port. Detailed Implementation

[0030] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of this utility model; however, this utility model can also be implemented in other ways different from those described herein. Therefore, the scope of protection of this utility model is not limited to the specific embodiments disclosed below.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 6 As shown, this utility model embodiment provides a one-way valve device for an endoscopic biopsy port, comprising: a valve body 100, the valve body 100 having a filter layer 110, an isolation layer 120, and a biopsy forceps movable port 130, the filter layer 110 having a filter one-way port 111, the isolation layer 120 having an isolation one-way port 121, and the biopsy forceps movable port 130 being located on the side of the isolation layer 120 away from the filter layer 110; a valve cover 200, the valve cover 200 being detachably connected to the valve body 100, the valve cover 200 having a pressure relief port 230, the pressure relief port 230 being connected to the biopsy forceps movable port 130; the valve cover 200 having... The valve body 100 is equipped with a locking platform 210, which cooperates with the valve body 100. The valve body 100 is provided with a locking groove 140, and the locking platform 210 cooperates with the locking groove 140. The valve body 100 is provided with a locking platform 150, which abuts against the locking platform 210. The valve cover 200 is provided with a locking groove 220, and the locking platform 150 cooperates with the locking groove 220. The valve body 100 has a closed state and an open state. In the closed state, the locking platform 210 is placed in the locking groove 140 and the locking platform 150 is placed in the locking groove 220. In the open state, the locking platform 210 is away from the locking groove 140 and the locking platform 150 is away from the locking groove 220. The biopsy forceps movable opening 130 is a fan-shaped opening.

[0032] In this embodiment, the one-way valve device is typically mounted on an endoscope. One end of the valve body 100, which has a filter layer 110, is connected to the endoscope. The filter layer 110 can be made of activated carbon. During biopsy, when internal gas comes into contact with the one-way valve device, it first contacts the filter layer 110. The filter layer 110 effectively absorbs contaminating gases, preventing leakage, such as thiol gases produced by necrotic tissue. Furthermore, the filter layer 110 also prevents internal liquids, such as blood and irrigation fluid, from splashing out of the one-way valve device. A one-way filter port 111 is provided in the middle of the filter layer 110 for the biopsy forceps to pass through. The biopsy forceps only need to be forcefully inserted into the one-way filter port 111 to pass through the filter layer 110, and after insertion, the forceps are surrounded, achieving a better sealing effect. In addition to the filter layer 110, the valve body 100 is also provided with an isolation layer 120. The isolation layer 120 separates the filter layer 110 from the outside, preventing external gases from contaminating the filter layer 110. At the same time, the isolation layer 120 can also intercept tiny debris such as mucus and tissue residue that are not completely blocked by the filter layer, reducing the risk of blockage at the rear end of the valve body or the endoscope channel, forming a multi-layer isolation effect. The valve body 100 is also provided with a biopsy forceps movable port 130. The biopsy forceps movable port 130 is a fan-shaped opening, which can make a certain range of movement when the biopsy forceps are inserted, so as to avoid the biopsy forceps being restricted and not flexible enough. The valve cover 200 is detachably connected to the valve body 100, which can seal the valve body 100 to prevent external dust and other contaminants from contaminating the interior of the valve body 100 when biopsy operations are not required. When the valve cover 200 is combined with the valve body 100, the retaining plate 210 on the valve cover 200 is placed in the retaining groove 140 on the valve body 100, the locking plate 150 on the valve body 100 abuts against the retaining plate 210 on the valve cover 200, and the locking plate 150 on the valve body 100 is placed in the locking groove 220 on the valve cover 200. The valve cover 200 is usually made of medical-grade silicone. Therefore, when the valve cover 200 needs to be removed, it can be pulled out directly with a certain amount of force to move the retaining plate 210 away from the retaining groove 140 and the locking plate 150 away from the locking groove 220, so that the one-way valve device enters the open state. Similarly, when installing the valve cover 200, it can be pushed in forcefully to move the retaining plate 210 away from the retaining groove 140 and the locking plate 150 away from the locking groove 220, so that the one-way valve device enters the closed state. A pressure relief port 230 is provided in the middle of the valve cover 200, so that when the valve cover 200 is combined with the valve body 100, the internal space of the valve body 100 is connected to the valve cover 200, which prevents the valve cover 200 from being pulled out due to negative pressure. The pressure relief port 230 is very small, so external contaminants such as dust cannot enter the valve body 100 through the pressure relief port 230.

[0033] In this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0034] In the description of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which 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.

[0036] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A one-way valve device for an endoscopic biopsy port, characterized in that, include: The valve body (100) is provided with a filter layer (110), an isolation layer (120), and a biopsy forceps movable port (130). The filter layer (110) is provided with a filter one-way port (111), the isolation layer (120) is provided with an isolation one-way port (121), and the biopsy forceps movable port (130) is located on the side of the isolation layer (120) away from the filter layer (110). The valve cover (200) is detachably connected to the valve body (100). The valve cover (200) is provided with a pressure relief port (230), which is connected to the biopsy forceps movable port (130).

2. The one-way valve device for endoscopic biopsy ports according to claim 1, characterized in that, The valve cover (200) is provided with a locking platform (210), which cooperates with the valve body (100).

3. The one-way valve device for endoscopic biopsy ports according to claim 2, characterized in that, The valve body (100) is provided with a slot (140), and the mounting plate (210) cooperates with the slot (140).

4. The one-way valve device for endoscopic biopsy ports according to claim 3, characterized in that, The valve body (100) is provided with a locking platform (150), which abuts against the locking platform (210).

5. The one-way valve device for endoscopic biopsy ports according to claim 4, characterized in that, The valve cover (200) is provided with a locking groove (220), and the locking platform (150) cooperates with the locking groove (220).

6. The one-way valve device for endoscopic biopsy ports according to claim 5, characterized in that, Including closed and open states, In the closed state, the card holder (210) is placed in the card slot (140), and the lock holder (150) is placed in the lock slot (220); In the open state, the card holder (210) is away from the card slot (140), and the lock holder (150) is away from the lock slot (220).

7. The one-way valve device for endoscopic biopsy ports according to claim 1, characterized in that, The biopsy forceps movable opening (130) is fan-shaped.

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