A multi-channel sealed valve and puncturer

Abstract

The embodiment of the present application relates to medical devices, and discloses a multi-channel sealing valve, comprising: a valve seat, which is configured with multiple channels, and the extending end of the channel is in a wedge-shaped structure; a gas blocking diaphragm, which is detachably connected to the valve seat, can be attached to the extending end of the channel to close the extending end of the channel, and the gas blocking diaphragm can rotate relative to the valve seat to open the channel; wherein the gas blocking diaphragm is configured with a boss on the side away from the channel, which is used to reset the gas blocking diaphragm to close the extending end of the channel. By setting the extending end of the channel as a wedge-shaped structure and cooperating with the attachment and closure of the gas blocking diaphragm, the sealing performance when the channel is closed is improved; the gas blocking diaphragm is opened by rotating, and the boss is combined to realize resetting, replacing the "rotating shaft + spring" resetting structure of the traditional mechanical valve, reducing the opening resistance of the valve, and simplifying the overall structure; at the same time, the boss assisted resetting can enhance the reliability of the closing of the gas blocking diaphragm, and ensure the stability of the pneumoperitoneum pressure. The present application also discloses a puncture device.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a multi-channel sealing valve and a puncture device. Background Technology

[0002] In single-port laparoscopic surgery, multiple robotic surgical instruments and endoscopes at the patient end typically need to be inserted into the body through a multi-channel single-port trocar. Because laparoscopic surgery requires maintaining pneumoperitoneum under pressure, the multi-channel trocar needs to possess a certain degree of one-way gas resistance and sealing. The one-way gas resistance and sealing of the trocar are usually achieved through its internal multi-channel one-way valve. Currently, there are two main types of multi-channel one-way valves: silicone cross valves and mechanical valves. Due to the softness of silicone, silicone cross valves are prone to deformation and leakage when instruments or endoscopes are not fully inserted, resulting in poor gas resistance. Mechanical valves, on the other hand, use elastic elements such as torsion springs for reset, leading to greater resistance when opening the valve channels. This often necessitates the addition of a manual opening button, resulting in a complex overall structure and higher cost for the trocar. In related technologies, multi-channel one-way cross valves either have poor gas resistance or complex structures when robotic surgical instruments are not fully inserted, making it impossible to simultaneously achieve good gas resistance and structural simplicity. Utility Model Content

[0003] One object of this application is to provide a multi-channel sealing valve and puncture device to at least solve the above-mentioned problems.

[0004] To achieve the above objectives, some embodiments of this application provide a multi-channel sealing valve, comprising: a valve seat having multiple channels, the protruding ends of which are wedge-shaped; and a gas-blocking diaphragm detachably connected to the valve seat, capable of fitting against the protruding ends of the channels to close them, and the gas-blocking diaphragm being rotatable relative to the valve seat to open the channels; wherein, the gas-blocking diaphragm has a boss on the side opposite to the channels, used to reset the gas-blocking diaphragm and close the protruding ends of the channels. Thus, by setting the protruding ends of the channels to a wedge-shaped structure, combined with the fitting and closing of the gas-blocking diaphragm, the sealing performance when the channels are closed is improved; the detachable connection of the gas-blocking diaphragm facilitates assembly and replacement; the gas-blocking diaphragm opens the channels by rotation and resets itself using the boss, replacing the "shaft + spring" reset structure of traditional mechanical valves, reducing valve opening resistance, simplifying the overall structure, and lowering costs; simultaneously, the boss-assisted reset enhances the reliability of the gas-blocking diaphragm's closure, ensuring stable gas pressure.

[0005] In some embodiments, the boss is disposed on the edge region of the gas-blocking diaphragm, and the boss is positioned close to the detachable connection between the gas-blocking diaphragm and the valve seat. In this way, with the boss close to the edge and the connection, the boss can more efficiently accumulate elastic potential energy and enhance the reset force when the gas-blocking diaphragm is opened; at the same time, this positioning reduces the interference of the boss on the instrument insertion path, ensuring smooth instrument insertion and balancing reset performance and ease of operation.

[0006] In some embodiments, the sidewall of the channel has a through mounting hole, and the gas-blocking diaphragm has a circular buckle structure. The circular buckle structure passes through the mounting hole, and its end abuts against the inner sidewall of the channel, thereby connecting the gas-blocking diaphragm to the valve seat. In this way, the circular buckle structure and the mounting hole cooperate to achieve a detachable connection between the gas-blocking diaphragm and the valve seat, facilitating assembly and replacement. The free end of the circular buckle abuts against the inner sidewall of the channel, ensuring a secure connection and preventing the gas-blocking diaphragm from falling off during instrument insertion or repositioning. Furthermore, this connection method has a simple structure, requires no additional fastening components, and reduces overall complexity and cost.

[0007] In some embodiments, the outer surface of the protruding end of the channel is provided with circumferentially arranged ribs at the edge of the channel. In this way, the ribs can enhance the tightness of the fit between the protruding end of the channel and the gas-barrier diaphragm, increase the sealing contact area, improve the sealing performance between the two, and reduce the risk of air leakage; at the same time, the ribs can position the gas-barrier diaphragm, prevent the gas-barrier diaphragm from shifting during reset, and ensure accurate sealing position.

[0008] In some embodiments, the device further includes: a valve cover, which is disposed on a valve seat and has multiple holes; wherein the multiple holes correspond one-to-one with multiple channels, and the cross-sectional area of ​​the insertion end of the channel is larger than the cross-sectional area of ​​the hole. In this way, the holes on the valve cover correspond one-to-one with the channels, providing guidance for instrument insertion and ensuring insertion accuracy; the cross-sectional area of ​​the insertion end of the channel is larger than the cross-sectional area of ​​the hole, allowing the instrument 40 to be initially positioned through the hole (smaller diameter) before entering the channel (larger diameter), reducing insertion deviation. Simultaneously, the holes can form a secondary seal for the instrument, enhancing overall sealing performance.

[0009] In some embodiments, the valve seat surface where the insertion end of the channel is located is provided with multiple positioning protrusions, and the valve cover is provided with multiple positioning holes. The positioning protrusions pass through and abut against the other side of the valve cover to fix the valve cover and the valve seat. In this way, the positioning protrusions and positioning holes cooperate to achieve quick positioning and fixation of the valve cover and the valve seat, resulting in high assembly efficiency; the positioning protrusions pass through and abut against the other side of the valve cover, ensuring a firm connection and preventing the valve cover from loosening during operation, which could lead to sealing failure; at the same time, this structure requires no additional fasteners, simplifying the overall structure and reducing costs.

[0010] In some embodiments, the valve cover has a first positioning notch on its edge for positioning during installation; or, the valve cover has a first positioning notch on its edge, and the valve seat has a second positioning notch corresponding to the first positioning notch on its edge for positioning during installation. In this way, the first positioning notch can mate with the corresponding structure of the puncture device, ensuring that the valve cover is installed in a unique direction, avoiding mismatch between the hole and the instrument due to incorrect installation, and improving assembly accuracy and safety; at the same time, the positioning notch can restrict the circumferential rotation of the valve cover, enhancing assembly stability.

[0011] In some embodiments, the outer peripheral surface of the valve seat is constructed with a sealing groove, and the valve seat further includes a sealing ring, which is embedded in the sealing groove to seal the installation gap between the multi-channel sealing valve and adjacent components. Thus, the sealing ring embedded in the sealing groove effectively seals the radial gap between the valve seat and adjacent components (such as the puncture device body), preventing gas leakage from the gap and enhancing overall gas resistance; the sealing groove positions the sealing ring, preventing displacement of the sealing ring during assembly or use, and ensuring stable sealing performance.

[0012] This application also provides a trocar, including a partition body and a multi-channel sealing valve as described in the foregoing embodiments, wherein the multi-channel sealing valve is inserted into the partition body. Thus, by applying the multi-channel sealing valve to the trocar, the trocar possesses multi-channel functionality, capable of simultaneously accommodating multiple instruments or endoscopes to meet the needs of single-port surgery. Simultaneously, the sealing performance of the sealing valve ensures the trocar's airtightness and gas resistance during use.

[0013] In some embodiments, the end of the partition body is provided with a positioning boss, which is embedded in the positioning notch of the multi-channel sealing valve to limit the circumferential rotation of the multi-channel sealing valve relative to the partition body. Thus, the cooperation between the positioning boss and the positioning notch effectively prevents the multi-channel sealing valve from rotating circumferentially relative to the partition body, ensuring the positional stability of the multi-channel sealing valve within the trocar, avoiding problems such as seal failure or difficulty in instrument insertion due to rotation, and improving the overall reliability of the trocar.

[0014] Compared with related technologies, the solution provided in this application improves the sealing performance of the channel by setting the protruding end of the channel as a wedge-shaped structure and combining it with the sealing of the gas-blocking diaphragm. The gas-blocking diaphragm is detachable for easy assembly and replacement. The gas-blocking diaphragm opens the channel by rotation and resets with the boss, replacing the "shaft + spring" reset structure of the traditional mechanical valve, reducing valve opening resistance, simplifying the overall structure, and lowering costs. At the same time, the boss-assisted reset can enhance the reliability of the gas-blocking diaphragm closure and ensure stable gas-suppressed pressure. Attached Figure Description

[0015] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0016] Figure 1 This is an exploded view of the multi-channel sealing valve provided in the embodiments of this disclosure;

[0017] Figure 2 This is a schematic diagram of the valve seat provided in an embodiment of this disclosure;

[0018] Figure 3 This is a structural schematic diagram of the valve seat provided in another embodiment of the present disclosure;

[0019] Figure 4 This is a schematic diagram of the structure of the multi-channel sealing valve provided in the embodiments of this disclosure;

[0020] Figure 5 This is a schematic diagram of the structure of the gas barrier diaphragm provided in the embodiments of this disclosure;

[0021] Figure 6 This is a schematic diagram of the valve cover provided in an embodiment of this disclosure;

[0022] Figure 7 This is a structural schematic diagram of the valve cover from another perspective of an embodiment of this disclosure;

[0023] Figure 8 This is a cross-sectional schematic diagram of the puncture device provided in an embodiment of this disclosure;

[0024] Figure 9 This is a cross-sectional schematic diagram of the puncture device and instrument assembly provided in the embodiments of this disclosure.

[0025] Figure label:

[0026] 10: Valve seat; 101: Channel; 102: Mounting hole; 103: Rib; 104: Locating notch; 105: Second locating notch; 106: Body; 107: Flange edge; 108: Sealing groove;

[0027] 20: Gas-barrier diaphragm; 201: Boss; 202: Circular buckle structure;

[0028] 30: Valve cover; 301: Hole; 302: Locating hole; 303: First locating notch; 304: Sealing skirt;

[0029] 40: Instruments;

[0030] 50: Separator; 501: Channel; 502: Positioning boss. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0033] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0034] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0035] Unless otherwise stated, the term "multiple" means two or more.

[0036] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0037] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0039] Combination Figures 1 to 9 As shown in the figure, a multi-channel sealing valve provided in this embodiment includes: a valve seat 10 and a gas-blocking diaphragm 20.

[0040] The valve seat 10 has multiple channels 101, and the protruding ends of the channels 101 are wedge-shaped. The gas-blocking diaphragm 20 is detachably connected to the valve seat 10 and can fit against the protruding ends of the channels 101 to close the protruding ends of the channels 101. The gas-blocking diaphragm 20 can rotate relative to the valve seat 10 to open the channels 101. The gas-blocking diaphragm 20 has a boss 201 on the side opposite to the channels 101 to reset the gas-blocking diaphragm 20 and close the protruding ends of the channels 101.

[0041] The multi-channel sealing valve provided in this embodiment improves the sealing performance of the channel 101 when closed by setting the protruding end of the channel 101 as a wedge structure and cooperating with the sealing of the gas-blocking diaphragm 20. The gas-blocking diaphragm 20 is detachable for easy assembly and replacement. The gas-blocking diaphragm 20 opens the channel 101 by rotation and resets by the boss 201, replacing the "shaft + spring" reset structure of the traditional mechanical valve, reducing valve opening resistance, simplifying the overall structure, and reducing costs. At the same time, the boss 201 assists in reset, which can enhance the reliability of the gas-blocking diaphragm 20 in closing and ensure stable gas pressure.

[0042] In this embodiment, the reset mechanism of each one-way valve body has been changed from the original shaft + spring to the elastic potential energy accumulated after the elastic deformation of the silicone gas-blocking diaphragm itself and the airflow pressure of the gas abdomen. Among them, the protruding end of the channel 101 has a wedge-shaped structure, which is beneficial to the reset and closure of the one-way gas-blocking diaphragm 20.

[0043] Optionally, the valve seat 10 is made of plastic. Plastic is lightweight, reducing the overall weight of the trocar and facilitating surgical procedures; plastic is less expensive than materials such as metal, reducing manufacturing costs; and plastic processing technology is mature, making it easy to mold into complex channels 101, wedge structures, etc., to meet multi-channel design requirements.

[0044] Optionally, the valve seat 10 is cylindrical. The cylindrical structure is well-suited to the tubular body of the trocar, making it easy to install inside the trocar; the circumferential structure is uniform and the force is balanced, which can reduce stress concentration during assembly and improve the overall structural stability; at the same time, the cylindrical design is conducive to the symmetrical layout of the internal channels 101, and is suitable for the coordinated operation of multiple instruments 40.

[0045] Optionally, the axes of the multiple channels 101 are arranged in parallel to avoid interference between the instruments 40 inserted into different channels 101.

[0046] The parallel axis of the channel 101 ensures that the inserted surgical instruments 40 and endoscope extend in a parallel direction, avoiding interference such as collision or entanglement of the instruments 40 during movement or operation, ensuring smooth operation, improving surgical safety, and is especially suitable for scenarios where multiple instruments 40 work together in single-port surgery.

[0047] Optionally, multiple channels 101 are set independently and are not interconnected. The independent separation of channels 101 can avoid airflow communication between different channels 101, ensuring that the sealing and gas-blocking performance of each channel 101 is independent of each other. Even if a channel 101 experiences a brief fluctuation in sealing due to the insertion of the instrument 40, it will not affect the maintenance of the pneumoperitoneum pressure of other channels 101, thus enhancing the overall reliability of gas blocking.

[0048] Optionally, the aperture portions of the multiple channels 101 are identical to accommodate instruments 40 of different sizes.

[0049] The parallel axes of the channels 101 ensure that the instruments 40 inserted into each channel 101 extend in a parallel direction, effectively avoiding interference problems such as mutual collision and entanglement of the instruments 40 during movement or operation, ensuring the smooth operation of the surgical instruments 40 and endoscope, and improving surgical safety.

[0050] In this embodiment, the diameter, position, and number of orifices 101 are adapted to the size, number, and placement of the robotic single-port surgical instruments 40 and the endoscope. This ensures that the design of the orifices 101 is highly matched with the parameters of the instruments 40 required for the actual surgery, guaranteeing that the instruments 40 and the endoscope can be accurately and stably inserted into the orifices 101. This not only ensures a good fit but also meets the layout requirements for the collaborative operation of multiple instruments 40 in single-port surgery, thus improving the practicality of the device.

[0051] Optionally, the gas-blocking diaphragm 20 is a one-way gas-blocking structure, and its material can be silicone rubber. The one-way gas-blocking structure ensures that gas can only flow in one direction (allowing gas to be discharged when the instrument 40 is inserted, preventing external gas from entering or internal pneumoperitoneum from leaking), maintaining stable pneumoperitoneum pressure; the silicone rubber material is soft and elastic, with low resistance when the instrument 40 is inserted, eliminating the need for additional manual opening of the structure and simplifying operation.

[0052] Optionally, the main body of the gas-blocking diaphragm 20 can be disc-shaped. The disc-shaped gas-blocking diaphragm 20 is adapted to the protruding end of the orifice 101 of the valve seat 10, which facilitates covering the protruding end of the orifice 101 to achieve a seal; at the same time, the disc-shaped design is easy to process and form, reducing manufacturing difficulty.

[0053] Optionally, the boss 201 is disposed on the edge region of the gas-blocking diaphragm 20, and the boss 201 is located close to the detachable connection between the gas-blocking diaphragm 20 and the valve seat 10.

[0054] The boss 201 is located near the edge and connection part. When the gas-blocking diaphragm 20 is pushed open, the boss 201 can accumulate elastic potential energy more efficiently and improve the reset force. At the same time, this position can reduce the interference of the boss 201 on the insertion path of the instrument 40, ensure smooth insertion of the instrument 40, and take into account both reset performance and ease of operation.

[0055] Optionally, the boss 201 is hemispherical or frustum-shaped and protrudes outward from the gas barrier diaphragm 20.

[0056] The hemispherical or semi-circular protrusion 201 has a smooth surface, which can reduce frictional resistance and wear when the gas-blocking diaphragm 20 is squeezed against the inner wall of the puncture device, thus extending the life of the gas-blocking diaphragm 20. The outward protruding structure can more effectively contact the inner wall of the puncture device and accumulate elastic potential energy, enhance the repositioning effect, ensure that the gas-blocking diaphragm 20 is tightly closed, and improve the reliability of gas blocking.

[0057] Optionally, the sidewall of the channel 101 is provided with a through mounting hole 102, and the gas-blocking diaphragm 20 is provided with a round buckle structure 202. The round buckle structure 202 passes through the mounting hole 102 and abuts against the inner sidewall of the channel 101 by means of the end of the round buckle structure 202, so that the gas-blocking diaphragm 20 is connected to the valve seat 10.

[0058] The round buckle structure 202 cooperates with the mounting hole 102 to realize the detachable connection between the gas-blocking diaphragm 20 and the valve seat 10, which is convenient for assembly and replacement. The free end of the round buckle abuts against the inner wall of the channel 101, which is firm and prevents the gas-blocking diaphragm 20 from falling off when the instrument 40 is inserted or reset. At the same time, this connection method has a simple structure, requires no additional fastening parts, and reduces the overall complexity and cost.

[0059] Preferably, the mounting hole 102 is located on the bottom sidewall of the channel 101, near the junction of the bottom sidewall and the peripheral sidewall. When the instrument 40 is inserted into the channel 101, the instrument 40 pushes open the gas-blocking diaphragm 20. Under the action of the instrument 40, the gas-blocking diaphragm 20 moves towards the inner wall of the partition body 50 on which the multi-channel sealing valve is installed, until the boss 201 abuts against the inner wall of the partition body 50. After the instrument 40 is removed, the gas-blocking diaphragm 20 is accelerated to return to its original position under the action of the boss 201.

[0060] The mounting hole 102 is located near the turning point, making the rotation fulcrum of the gas-blocking diaphragm 20 more reasonable. When the instrument 40 is inserted, the gas-blocking diaphragm 20 opens at a larger angle, reducing insertion resistance. When the boss 201 abuts against the inner wall of the separator body 50, it can effectively accumulate elastic potential energy. After the instrument 40 is removed, the elastic force of the boss 201 acts directly on the gas-blocking diaphragm 20, accelerating reset, shortening the seal recovery time, and reducing the risk of air leakage.

[0061] Optionally, the circular buckle structure 202 extends outward from the surface of the gas-blocking diaphragm 20 in a strip or column shape, and expands at the free end to form a limiting part. The limiting part first deforms through the mounting hole 102, and then abuts against the inner wall of the channel 101, so that the gas-blocking diaphragm 20 is connected to the valve seat 10.

[0062] The strip-shaped or columnar round buckle structure 202 has high strength and good connection stability; the free end expansion limiting part automatically resets and abuts against the inner side wall after passing through the mounting hole 102 through deformation, realizing rapid assembly and firm connection, which is not easy to loosen; this structure can be installed without tools, improving assembly efficiency and reducing production difficulty.

[0063] Optionally, the round buckle structure 202 includes a buckle and a guide portion that protrudes outward from the surface of the self-blocking diaphragm 20 in the shape of a strip or column. The guide portion passes through the mounting hole 102, and then the buckle is installed at the free end of the guide portion and abuts against the inner sidewall of the channel 101 so that the gas-blocking diaphragm 20 is connected to the valve seat 10.

[0064] The guide section guides the circular buckle structure 202 to accurately pass through the mounting hole 102, improving assembly accuracy; the buckle and guide section are designed separately, which is convenient for separate processing, especially suitable for buckle structures with complex shapes, enhancing connection reliability; at the same time, the separate structure makes it easy to disassemble and replace the gas-blocking diaphragm 20 during later maintenance, improving the maintainability of the device.

[0065] Optionally, the boss 201 is disposed near or corresponding to the round buckle structure 202. For example, the boss 201 and the round buckle structure 202 are located on both sides of the gas barrier diaphragm 20 and are disposed correspondingly.

[0066] The protrusion 201 and the round buckle structure 202 are correspondingly set to make the gas barrier diaphragm 20 more balanced in terms of force, so that it is not easy to deviate when opening or resetting, ensuring that the sealing surface fits evenly and improving the sealing performance; the corresponding arrangement on both sides can avoid deformation or damage caused by excessive local stress on the gas barrier diaphragm 20, and extend its service life.

[0067] Optionally, the boss 201 is made of a flexible material.

[0068] The protrusion 201, made of elastic material, can generate greater elastic deformation when it is squeezed against the inner wall of the partition body 50, accumulate more elastic potential energy, enhance the reset force, and ensure that the gas-blocking diaphragm 20 is tightly closed. At the same time, the elastic material has a buffering effect, reducing the rigid collision between the protrusion 201 and the inner wall of the puncture device, reducing wear, and extending the service life of the component.

[0069] Optionally, the outer surface of the protruding end of the channel 101 is provided with a circumferentially arranged rib 103 at the edge of the channel 101.

[0070] The raised rib 103 can enhance the tightness of the fit between the protruding end of the channel 101 and the gas-blocking diaphragm 20, increase the sealing contact area, improve the sealing performance between the two, and reduce the risk of air leakage. At the same time, the raised rib 103 can position the gas-blocking diaphragm 20 to prevent the gas-blocking diaphragm 20 from shifting when resetting, and ensure accurate sealing position.

[0071] Optionally, the planes where the protruding ends of the multiple channels 101 are located intersect.

[0072] Optionally, it also includes: a valve cover 30, which covers the valve seat 10 and has a plurality of holes 301; wherein the plurality of holes 301 are provided in a one-to-one correspondence with a plurality of channels 101, and the cross-sectional area of ​​the insertion end of the channel 101 is greater than the cross-sectional area of ​​the hole 301.

[0073] The holes 301 of the valve cover 30 correspond one-to-one with the channels 101, providing guidance for the insertion of the instrument 40 and ensuring the accuracy of insertion. The cross-sectional area of ​​the insertion end of the channel 101 is larger than that of the hole 301, so that the instrument 40 is initially positioned through the hole 301 (smaller diameter) and then enters the channel 101 (larger diameter), reducing insertion deviation. At the same time, the hole 301 can form a secondary seal for the instrument 40, enhancing the overall sealing performance.

[0074] Optionally, the valve cover 30 is disc-shaped, and the valve cover 30 has an inwardly extending sealing skirt 304 at the edge of the hole 301.

[0075] The disc-shaped valve cover 30 is compatible with the cylindrical structure of the valve seat 10, providing good coverage; the sealing skirt 304 can fit tightly with the surface of the inserted instrument 40 to form a radial seal, further preventing gas leakage from the pneumatic system and enhancing the overall sealing performance; the inward extension design of the sealing skirt 304 does not affect the insertion path of the instrument 40, balancing sealing and ease of operation.

[0076] Optionally, the valve seat 10 surface where the insertion end of the channel 101 is located is provided with a plurality of positioning protrusions 104, and the valve cover 30 is provided with a plurality of positioning holes 302. The positioning protrusions 104 pass through and abut against the other side of the valve cover 30 so as to fix the valve cover 30 to the valve seat 10.

[0077] The positioning protrusion 104 cooperates with the positioning hole 302 to achieve quick positioning and fixation of the valve cover 30 and the valve seat 10, resulting in high assembly efficiency. The positioning protrusion 104 passes through and abuts against the other side of the valve cover 30, ensuring a firm connection and preventing the valve cover 30 from loosening during surgery, which could lead to sealing failure. At the same time, this structure requires no additional fasteners, simplifying the overall structure and reducing costs.

[0078] Optionally, the edge of the valve cover 30 is provided with a first positioning notch 303 for positioning and installation.

[0079] The first positioning notch 303 can be matched with the corresponding structure of the puncture device to ensure that the valve cover 30 is installed in a unique direction, avoiding mismatch between the hole 301 and the instrument 40 due to incorrect installation, thus improving assembly accuracy and safety; at the same time, the positioning notch can restrict the circumferential rotation of the valve cover 30, enhancing assembly stability.

[0080] Optionally, the valve cover 30 has a first positioning notch 303 on its edge, and the valve seat 10 has a second positioning notch 105 corresponding to the first positioning notch 303 on its edge, for positioning and installation. The first positioning notch 303 and the second positioning notch 105 cooperate to simultaneously limit the connection with the positioning boss 502 of the partition body 50.

[0081] The first positioning notch 303 and the second positioning notch 105 work together to achieve unified positioning of the valve cover 30, valve seat 10 and the partition body 50, ensuring that the three are installed in the same direction and avoiding sealing failure or interference of the instrument 40 due to component misalignment; together with the positioning boss 502 of the partition body 50, they further restrict circumferential rotation, enhance the overall assembly stability and improve surgical safety.

[0082] Optionally, the valve seat 10 includes: a body 106, with a channel 101 extending axially through the body 106; and a flange 107 circumferentially surrounding the body 106, wherein the flange 107 is provided with a positioning protrusion 104. Optionally, the flange 107 is also provided with a second positioning notch 105.

[0083] The body 106 provides a stable base for the installation of the channel 101, ensuring the structural stability of the valve seat 10 after insertion. The flange edge 107 increases the connection area between the valve seat 10 and other components, improving the reliability of the connection. At the same time, the positioning protrusion 104 and the second positioning notch 105 on the flange edge 107 make the positioning function easier to achieve, without affecting the normal use of the channel 101 on the body 106.

[0084] In this embodiment, the body 106 and the flange edge 107 are integrally formed. The flange edge 107 can be formed by bending and extending outward from the edge of the body 106.

[0085] The one-piece molding reduces the connection gap between the body 106 and the flange 107, improving the overall structural strength and sealing performance of the valve seat 10, avoiding the risk of loosening or leakage caused by separate connections, while simplifying the production process and improving manufacturing efficiency. In addition, the outwardly bent flange 107 increases the contact area between the valve seat 10 and adjacent components, improving the connection's firmness, and facilitating the installation of structures such as the positioning protrusion 104 and the second positioning notch 105 on the flange 107 without affecting the layout of the holes 101 on the body 106.

[0086] The positioning protrusion 104 and the second positioning notch 105 of the flange edge 107 are designed to avoid the hole 101 of the body 106 and to avoid the outer wall of the body 106 as much as possible. This avoids spatial conflict between the positioning protrusion 104 and the positioning notch and the hole 101 or the outer wall of the body 106, while ensuring the integrity of the outer wall of the body 106 and not affecting the setting of structures such as the sealing groove 108, thus improving the rationality of the valve seat 10 structural design.

[0087] Optionally, the outer peripheral surface of the valve seat 10 is provided with a sealing groove 108, and also includes a sealing ring, which is embedded in the sealing groove 108 to seal the installation gap between the multi-channel sealing valve and adjacent components.

[0088] The sealing ring is embedded in the sealing groove 108, which can effectively seal the radial gap between the valve seat 10 and adjacent components (such as the puncture device body), prevent gas leakage from the gap, and enhance the overall gas barrier performance; the sealing groove 108 positions the sealing ring to prevent it from shifting during assembly or use, and ensures a stable sealing effect.

[0089] Optionally, the sealing ring may be an O-ring.

[0090] This disclosure also provides a puncture device, including a partition body 50 and a multi-channel sealing valve as provided in the above embodiments, the multi-channel sealing valve being inserted into the partition body 50.

[0091] Applying a multi-channel sealing valve to a trocar enables the trocar to have a multi-channel function, allowing it to accommodate multiple instruments or endoscopes simultaneously, meeting the needs of single-port surgery. At the same time, the sealing performance of the sealing valve ensures the trocar's airtightness and gas resistance during use.

[0092] Optionally, the end of the partition body 50 is provided with a positioning boss 502, which is embedded in the positioning notch of the multi-channel sealing valve to limit the circumferential rotation of the multi-channel sealing valve relative to the partition body 50.

[0093] The cooperation between the positioning boss 502 and the positioning notch can effectively prevent the multi-channel sealing valve from rotating circumferentially relative to the separating body 50, ensuring the positional stability of the multi-channel sealing valve in the trocar, avoiding problems such as sealing failure or difficulty in inserting the instrument 40 due to rotation, and improving the overall reliability of the trocar.

[0094] Optionally, the first end of the partition body 50 is a hollow cavity structure, and multiple channels 501 are constructed along the axial direction from the first end to the stacked end; the multi-channel sealing valve is embedded in the hollow cavity of the first end of the partition body 50, and the orifice 101 of the valve seat 10 of the multi-channel sealing valve corresponds one-to-one with the channel 501 of the partition body 50.

[0095] The hollow cavity structure provides a stable installation space for the multi-channel sealing valve. The one-to-one correspondence between the orifice 101 of the valve seat 10 and the channel 501 ensures a smooth transition of the instrument 40 from the sealing valve to the separating body 50, realizing precise docking of multiple channels, avoiding the offset or interference of the instrument 40 during the transmission process, and improving the overall structural coordination and operational reliability of the puncture device.

[0096] When the multi-channel sealing valve is embedded in the first end of the partition body 50, the flange edge 107 of the valve seat 10 of the multi-channel sealing valve overlaps the outer edge of the first end, and the sealing ring of the multi-channel sealing valve abuts against the inner wall of the partition body 50 to seal.

[0097] The positioning boss 502 is formed at the first end of the partition body 50, and the height of the positioning boss 502 is adapted to the thickness of the flange edge 107. It can limit the radial or circumferential movement of the multi-channel sealing valve, so as to avoid the positioning boss 502 being too high and thus affecting the connection between the partition body 50 and other components.

[0098] In this embodiment, after the multi-channel sealing valve is assembled with the puncture device separating body 50, when in actual use, because the unidirectional gas-blocking diaphragm 20 is very light, the gas-blocking diaphragm 20 will adhere tightly to the corresponding channel 101 of the valve seat 10 under the action of the internal pneumoperitoneum airflow and air pressure to achieve unidirectional gas blocking. When the instrument 40 or endoscope is inserted, it only needs to overcome the pneumoperitoneum pressure, so the resistance to opening is small. When the instrument 40 or endoscope is inserted, the multi-channel sealing valve and the instrument 40 or endoscope are sealed. At the same time, the protrusion 201 at the bottom of the unidirectional gas-blocking diaphragm 20 is squeezed against the inner wall of the separating body 50 to accumulate elastic potential energy. When the instrument 40 or endoscope is pulled out, it can accelerate the reset of the gas-blocking diaphragm 20.

[0099] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims, and the foregoing embodiments should be considered exemplary and non-limiting.

Claims

1. A multi-channel sealing valve, characterized in that, include: The valve seat has multiple channels, and the protruding ends of the channels are wedge-shaped. The gas-blocking diaphragm is detachably connected to the valve seat and can fit against the protruding end of the channel to close the protruding end of the channel. The gas-blocking diaphragm can rotate relative to the valve seat to open the channel. The gas-barrier diaphragm has a protrusion on the side opposite to the channel, which is used to reset the gas-barrier diaphragm and seal the protruding end of the channel.

2. The multi-channel sealing valve according to claim 1, characterized in that, The boss is located on the edge area of ​​the gas-blocking diaphragm, and the boss is located close to the detachable connection between the gas-blocking diaphragm and the valve seat.

3. The multi-channel sealing valve according to claim 1, characterized in that, The sidewall of the channel has a through mounting hole, and the gas-blocking diaphragm has a round buckle structure. The round buckle structure passes through the mounting hole and abuts against the inner sidewall of the channel by the end of the round buckle structure, so that the gas-blocking diaphragm is connected to the valve seat.

4. The multi-channel sealing valve according to claim 1, characterized in that, The outer surface of the protruding end of the channel has circumferentially arranged ribs at the edge of the channel.

5. The multi-channel sealing valve according to claim 1, characterized in that, Also includes: The valve cover is placed on the valve seat and has multiple holes. In this configuration, multiple holes are provided in a one-to-one correspondence with multiple channels, and the cross-sectional area of ​​the insertion end of the channel is greater than the cross-sectional area of ​​the hole.

6. The multi-channel sealing valve according to claim 5, characterized in that, The valve seat surface where the insertion end of the channel is located has multiple positioning protrusions, and the valve cover has multiple positioning holes. The positioning protrusions pass through and abut against the other side of the valve cover to fix the valve cover and the valve seat.

7. The multi-channel sealing valve according to claim 5, characterized in that, The edge of the valve cover has a first positioning notch for positioning and installation. Alternatively, the valve cover edge has a first positioning notch, and the valve seat edge has a second positioning notch corresponding to the first positioning notch, for positioning and installation.

8. The multi-channel sealing valve according to any one of claims 1 to 7, characterized in that, The outer circumferential surface of the valve seat has a sealing groove, and also includes: A sealing ring is embedded in a sealing groove to seal the installation gap between the multi-channel sealing valve and adjacent components.

9. A puncture instrument, characterized in that, It includes a partition body and a multi-channel sealing valve as described in any one of claims 1 to 8, wherein the multi-channel sealing valve is inserted into the partition body.

10. The puncture device according to claim 9, characterized in that, The end of the separator body is equipped with a positioning boss, which is embedded in the positioning notch of the multi-channel sealing valve to limit the circumferential rotation of the multi-channel sealing valve relative to the separator body.

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