Single bore multi-lumen cannula dual seal device
Patent Information
- Application Number
- CN202521142720.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-05
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-06-05
AI Technical Summary
[0005]本实用新型为了解决相关技术中的问题，提供了一种单孔多通道套管双密封装置，该装置解决了套管密封性能不足，手术器械戳破密封组件的问题
[0020]所述下盖上壁面设置有环形凹槽，所述上盖下壁面上设置有与环形凹槽相适配的环形凸起。
Smart Images
Figure CN224864549U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, specifically a single-hole multi-channel sleeve double-sealing device. Background Technology
[0002] In the field of surgical medicine, single-port multi-channel cannulas are widely used to reduce trauma and improve surgical precision because they allow for the manipulation of multiple instruments through a single surgical incision. However, traditional single-port multi-channel cannulas have significant safety hazards during use: the cannula's sealing performance is insufficient when surgical instruments are inserted or removed, which can easily lead to gas leakage.
[0003] Gas leakage can disrupt intra-abdominal pressure stability, affect surgical visibility, increase surgical difficulty, and even lead to postoperative complications such as infection, threatening surgical outcomes and patient safety. In existing technologies, some cannulas employ only a single sealing structure; for example, single-hole gas valve fixation methods lack sufficient stability and effective restriction of surgical instrument displacement. The sealing components are prone to puncture or displacement due to instrument friction or external operational forces, further exacerbating the risk of leakage.
[0004] Furthermore, existing technologies rely on a single method for fixing the sealing components, simply limiting their position, which fails to create a reliable dual-protection mechanism and cannot meet the clinical demand for highly airtight surgical instruments. Therefore, there is an urgent need to develop a single-hole multi-channel cannula structure that provides a dual-sealing effect, effectively prevents gas leakage, and stably limits the position of surgical instruments. Utility Model Content
[0005] In order to solve the problems in related technologies, this utility model provides a single-hole multi-channel sleeve double sealing device, which solves the problem of insufficient sleeve sealing performance and surgical instruments puncturing the sealing components.
[0006] To solve the above problems, the following technical solutions are provided:
[0007] This utility model discloses a single-hole multi-channel sleeve double sealing device, which includes a vertically arranged lower cover. The lower cover is hollow and has an annular groove near its upper edge. A single-hole air-blocking valve is installed in the lower cover. U-shaped ring blocks that fit the annular groove are arranged around the single-hole air-blocking valve. A single-hole pressure plate for pressing the single-hole air-blocking valve is provided on the single-hole pressure plate. A corrugated component is provided on the corrugated component. A baffle is provided on the corrugated component. A clamping structure for fixing the baffle is provided on the corrugated component. An upper cover for pressing the corrugated component is provided on the outer wall of the corrugated component.
[0008] The above solution utilizes a single-hole gas-blocking valve and a corrugated component. The single-hole gas-blocking valve prevents the backflow and leakage of gas from the abdominal cavity, while the sealing assembly composed of the corrugated component and baffle restricts the displacement of surgical instruments and enhances the sealing effect, forming a double-layer sealing defense that significantly improves airtightness and solves the problem of insufficient cannula sealing performance. The lower cover, single-hole gas-blocking valve, single-hole pressure plate, corrugated component, and upper cover are vertically stacked, resulting in a compact structure that facilitates the insertion or removal of surgical instruments, reduces lateral friction between instruments and seals, and further reduces the risk of air leakage. The annular groove of the lower cover precisely matches the U-shaped ring block of the single-hole gas-blocking valve, ensuring stable positioning of the gas-blocking valve and avoiding sealing failure due to installation misalignment.
[0009] Because some surgical instruments are quite sharp, they can easily scratch the corrugated components during insertion into the cannula. Therefore, there is a risk of puncturing a single corrugated component, leading to air leakage. The baffle is designed to protect the corrugated components and prevent surgical instruments from puncturing them. The baffle can guide the surgical instruments into the cannula, thus solving the problem of surgical instruments puncturing the corrugated components. The baffle can also help maintain the shape of the corrugated components and provide a certain degree of support.
[0010] The lower end face of the single-hole pressure plate contains an annular pressure plate, which is adapted to the U-shaped ring block and is located inside the U-shaped ring block. The upper end face of the single-hole pressure plate contains an annular vertical plate.
[0011] In the above solution, the U-shaped ring block of the single-hole air-blocking valve is embedded in the annular groove of the lower cover by setting the annular pressure plate, and the annular pressure plate at the lower end of the single-hole pressure plate is embedded in the U-shaped ring block of the single-hole air-blocking valve, forming a double limiting structure. Compared with the single pressure plate fixing structure, the double limiting structure can evenly distribute the pressure, avoid local deformation of the single-hole air-blocking valve, and ensure sealing reliability.
[0012] The wave-shaped component has a downward bending section near its outer edge, and the inner wall of the upper cover has a vertically downward-arranged pressing block. The downward bending section is located between the annular upright plate and the pressing block. The annular upright plate abuts against the lower end face of the downward bending section, and the pressing block abuts against the upper end face of the downward bending section.
[0013] In the above solution, by setting the lower bending part, the lower bending part of the outer edge of the wave component is clamped by the annular vertical plate of the single-hole pressure plate and the lower pressure block of the upper cover. When the surgical instrument is inserted, the wave component tightly wraps the surgical instrument through elastic deformation. At the same time, the upper and lower clamping forces limit the excessive displacement of the wave component, avoiding air leakage or damage caused by excessive deformation of the single elastic structure.
[0014] The clamping structure includes a first clamping component and a second clamping component. Several studs are evenly arranged on the upper surface of the first clamping component. The wave-shaped component, the baffle, and the second clamping component are all provided with through holes that are adapted to the studs. The studs pass through the wave-shaped component, the baffle, and the second clamping component in sequence and extend into the through hole of the second clamping component. A nut is provided on the section of the stud located in the through hole of the second clamping component.
[0015] In the above solution, the stud of the first clip passes through the wave-shaped part, the baffle, and the second clip in sequence, and is locked with a nut to form a rigid connection. Compared with the traditional buckle fixation, this structure can withstand greater tensile force and prevent the baffle from loosening or falling off due to frequent insertion and removal of surgical instruments. Moreover, the stud and nut structure can be quickly disassembled and assembled, which is convenient for replacing worn baffles during surgery and helps to reduce costs.
[0016] The lower part of the outer wall surface of the cover is provided with at least one anti-slip tooth.
[0017] The above solution uses anti-slip teeth to prevent slipping during use.
[0018] The U-shaped ring block and the single-hole air-blocking valve are an integral structure, and the U-shaped ring block is fixed in the annular groove by snap-fit; the lower pressure block and the upper cover are an integral structure.
[0019] By adopting the above solution, the integrated structure reduces gaps at the joints, and the double-seal design helps to reduce gas leakage caused by loose parts or assembly gaps, thus enhancing the overall sealing performance. The device is easy to install and disassemble quickly, improving efficiency.
[0020] The upper wall of the lower cover is provided with an annular groove, and the lower wall of the upper cover is provided with an annular protrusion that matches the annular groove.
[0021] The above design, with its annular groove and annular protrusion, facilitates installation.
[0022] The above solution has the following advantages:
[0023] 1. This utility model discloses a single-hole multi-channel sleeve double-sealing device. Through the setting of a single-hole gas-blocking valve and a corrugated component, the single-hole gas-blocking valve prevents the backflow and leakage of gas in the abdominal cavity of the human body. The sealing assembly composed of the corrugated component and the baffle restricts the displacement of surgical instruments and enhances the sealing effect, forming a double sealing defense line, which significantly improves air tightness. The lower cover, single-hole gas-blocking valve, single-hole pressure plate, corrugated component, and upper cover are vertically stacked, with a compact structure, which facilitates the insertion or removal of surgical instruments, reduces the lateral friction between instruments and sealing components, and further reduces the risk of air leakage. The annular groove of the lower cover is precisely matched with the U-shaped ring block of the single-hole gas-blocking valve, ensuring the stable positioning of the gas-blocking valve and avoiding sealing failure caused by installation misalignment.
[0024] 2. Because some surgical instruments are quite sharp, they can easily scratch the corrugated parts during insertion into the cannula. Therefore, there is a risk of puncturing a single corrugated part, leading to air leakage. The baffle is designed to protect the corrugated parts and prevent surgical instruments from puncturing them. The baffle can guide the surgical instruments into the cannula, thus solving the problem of surgical instruments puncturing the corrugated parts. The baffle can also keep the corrugated parts in a certain shape and provide some support. Attached Figure Description
[0025] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:
[0026] Figure 1 A schematic diagram of a single-hole multi-channel sleeve double-sealing device;
[0027] Figure 2 An exploded view of a single-hole multi-channel sleeve double-sealing device;
[0028] Figure 3 This is a cross-sectional view of a single-hole multi-channel sleeve double-sealing device;
[0029] Figure 4 for Figure 3 Enlarged structural diagram of section A in the middle;
[0030] Figure 5 for Figure 3 Enlarged structural diagram of section B in the middle;
[0031] Explanation of reference numerals in the attached drawings: 1. Lower cover; 101. Annular groove; 102. Anti-slip teeth; 103. Annular groove;
[0032] 2. Single-hole air-blocking valve; 201. U-shaped ring block;
[0033] 3. Single-hole pressure plate; 301. Annular pressure plate; 302. Annular vertical plate;
[0034] 4. Wavy parts; 401. Lower bend;
[0035] 5. Baffle plate;
[0036] 6. Top cover; 601. Lower pressure block; 602. Annular protrusion;
[0037] 7. First clamping component; 701. Stud; 702. Nut;
[0038] 8. Second card. Detailed Implementation
[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0040] In specific embodiment 1, such as Figures 1-5 As shown, the present invention provides a single-hole multi-channel sleeve double sealing device, comprising a vertically arranged lower cover 1, which is hollow, and an annular groove 101 is provided near the upper edge of the lower cover 1. A single-hole air-blocking valve 2 is provided in the lower cover 1. A U-shaped ring block 201 adapted to the annular groove 101 is provided around the single-hole air-blocking valve 2. A single-hole pressure plate 3 for pressing the single-hole air-blocking valve 2 is provided on the single-hole pressure plate 3. A corrugated component 4 is provided on the corrugated component 4. A baffle 5 is provided on the corrugated component 4. A clamping structure for fixing the baffle 5 is provided on the corrugated component 4. An upper cover 6 for pressing the corrugated component 4 is provided on the outer wall of the corrugated component 4. An annular groove 103 is provided on the upper wall of the lower cover 1, and an annular protrusion 602 adapted to the annular groove 103 is provided on the lower wall of the upper cover 6. The single-hole gas-blocking valve 2 prevents the backflow and leakage of gas from the abdominal cavity. The sealing assembly composed of the corrugated element 4 and the baffle 5 restricts the displacement of surgical instruments and enhances the sealing effect, forming a double sealing defense line and significantly improving air tightness. The lower cover 1, single-hole gas-blocking valve 2, single-hole pressure plate 3, corrugated element 4, and upper cover 6 are stacked vertically, with a compact structure, which facilitates the insertion or removal of surgical instruments, reduces the lateral friction between the instruments and the sealing element, and further reduces the risk of air leakage. The annular groove 101 of the lower cover 1 is precisely matched with the U-shaped ring block 201 of the single-hole gas-blocking valve 2 to ensure stable positioning of the gas-blocking valve and avoid sealing failure caused by installation misalignment.
[0041] Because some surgical instruments are quite sharp, they can easily scratch the corrugated part 4 during insertion into the cannula. Therefore, there is a risk of puncturing a single corrugated part 4, which could lead to air leakage. The baffle 5 is designed to protect the corrugated part 4 and prevent surgical instruments from puncturing it. The baffle 5 can guide the surgical instruments into the cannula and also helps the corrugated part 4 maintain its shape, providing a certain degree of support.
[0042] like Figure 5As shown, the lower end face of the single-hole pressure plate 3 contains an annular pressure plate 301, which is adapted to the U-shaped ring block 201 and is located inside the U-shaped ring block 201. The upper end face of the single-hole pressure plate 3 contains an annular vertical plate 302. The U-shaped ring block 201 of the single-hole air-blocking valve 2 is embedded in the annular groove 101 of the lower cover 1, and the annular pressure plate 301 at the lower end of the single-hole pressure plate 3 is embedded in the U-shaped ring block 201 of the single-hole air-blocking valve 2, forming a double limiting structure. Compared with the single pressure plate fixing structure, this double limiting structure can evenly distribute the pressure, avoid local deformation of the single-hole air-blocking valve 2, and ensure sealing reliability.
[0043] like Figure 4 As shown, the corrugated component 4 has a downward bending portion 401 near its outer edge, and a vertically downwardly arranged downward pressing block 601 is provided on the inner wall of the upper cover 6. The downward bending portion 401 is located between the annular vertical plate 302 and the downward pressing block 601. The annular vertical plate 302 abuts against the lower end face of the downward bending portion 401, and the downward pressing block 601 abuts against the upper end face of the downward bending portion 401. The downward bending portion 401 at the outer edge of the corrugated component 4 is clamped by the annular vertical plate 302 of the single-hole pressure plate 3 and the downward pressing block 601 of the upper cover 6. When the surgical instrument is inserted, the corrugated component 4 tightly wraps the surgical instrument through elastic deformation. At the same time, the clamping force restricts the excessive displacement of the corrugated component 4, avoiding air leakage or damage caused by excessive deformation of the single elastic structure.
[0044] like Figure 2 , 4 As shown, the locking structure includes a first locking component 7 and a second locking component 8. Several studs 701 are evenly arranged on the upper surface of the first locking component 7. The wave-shaped component 4, the baffle 5, and the second locking component 8 are all provided with through holes adapted to the studs 701. The studs 701 sequentially pass through the wave-shaped component 4, the baffle 5, and the second locking component 8, extending into the through hole of the second locking component 8. A nut 702 is provided on the section of the stud 701 located in the through hole of the second locking component 8. The studs 701 of the first locking component 7 sequentially pass through the wave-shaped component 4, the baffle 5, and the second locking component 8, and are locked by the nut 702, forming a rigid connection. Compared with traditional snap-fit fixing, this structure can withstand greater tensile force, preventing the baffle 5 from loosening or falling off due to frequent insertion and removal of surgical instruments. Furthermore, the stud 701 and nut 702 structure allows for quick assembly and disassembly, facilitating the replacement of worn baffle 5 during surgery, which helps reduce costs.
[0045] The U-shaped ring block 201 and the single-hole air-blocking valve 2 are integrated into one structure, and the U-shaped ring block 201 is fixed in the annular groove 101 by snap-fit. The lower pressure block 601 and the upper cover 6 are integrated into one structure. The integrated structure reduces the gaps at the connection, and the double-seal design helps to reduce gas leakage caused by loose parts or assembly gaps, thereby enhancing the overall sealing performance. The device is easy to install and disassemble, improving efficiency.
[0046] In a specific embodiment 2, such as Figure 1 , 3 As shown, the difference between this embodiment and embodiment 1 is that the lower outer wall surface of the lower cover 1 in this embodiment is provided with not less than one anti-slip tooth 102, which is used to prevent slipping during use.
[0047] First, place the single-hole air-blocking valve 2 into the lower cover 1, so that the U-shaped ring block 201 is embedded in the annular groove 101. Then, place the single-hole pressure plate 3 into the single-hole air-blocking valve 2, so that the annular pressure plate 301 is embedded in the U-shaped ring block 201. Next, pass the corrugated part 4, the baffle 5, and the second clamping part 8 through the stud 701 of the first clamping part 7 in sequence, tighten the nut 702, place the corrugated part 4 with the baffle 5 installed on the single-hole pressure plate 3, and cover it with the upper cover 6, so that the lower bend 401 is pressed between the annular vertical plate 302 and the lower pressure block 601, thus completing the installation of the sleeve. When in use, the surgical instruments are inserted into the corrugated part 4 and the single-hole air-blocking valve 2 in sequence under the guidance of the baffle 5.
[0048] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components, and can be direct connections or indirect connections through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0049] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all implementation methods here, and any obvious variations or modifications derived therefrom are still within the protection scope of this utility model.
Claims
1. A single-hole multi-channel sleeve double-sealing device, characterized in that, The device includes a vertically arranged lower cover (1), which is hollow and has an annular groove (101) near the upper edge. A single-hole air-blocking valve (2) is provided in the lower cover (1). A U-shaped ring block (201) that matches the annular groove (101) is provided around the single-hole air-blocking valve (2). A single-hole pressure plate (3) for pressing the single-hole air-blocking valve (2) is provided on the single-hole pressure plate (3). A wave-shaped component (4) is provided on the wave-shaped component (4). A baffle (5) is provided on the wave-shaped component (4). A clip structure for fixing the baffle (5) is provided on the wave-shaped component (4). An upper cover (6) for pressing the wave-shaped component (4) is provided on the outer wall of the wave-shaped component (4).
2. The single-hole multi-channel sleeve double-sealing device as described in claim 1, characterized in that, The lower end face of the single-hole pressure plate (3) contains an annular pressure plate (301), which is adapted to the U-shaped ring block (201) and is located inside the U-shaped ring block (201). The upper end face of the single-hole pressure plate (3) contains an annular vertical plate (302).
3. The single-hole multi-channel sleeve double-sealing device as described in claim 2, characterized in that, The wave-shaped component (4) has a downward bending part (401) near its outer edge. The inner wall of the upper cover (6) has a vertically downward-arranged pressing block (601). The downward bending part (401) is located between the annular upright plate (302) and the pressing block (601). The annular upright plate (302) abuts against the lower end face of the downward bending part (401), and the pressing block (601) abuts against the upper end face of the downward bending part (401).
4. The single-hole multi-channel sleeve double-sealing device as described in claim 1, characterized in that, The clamping structure includes a first clamping member (7) and a second clamping member (8). A plurality of studs (701) are evenly arranged on the upper surface of the first clamping member (7). The wave member (4), the baffle (5), and the second clamping member (8) are all provided with through holes that are compatible with the studs (701). The studs (701) pass through the wave member (4), the baffle (5), and the second clamping member (8) in sequence and extend into the through hole of the second clamping member (8). A nut (702) is provided on the section of stud (701) located in the through hole of the second clamping member (8).
5. The single-hole multi-channel sleeve double-sealing device as described in claim 1, characterized in that, The lower part of the outer wall surface of the lower cover (1) is provided with not less than one anti-slip tooth (102).
6. The single-hole multi-channel sleeve double-sealing device as described in claim 3, characterized in that, The U-shaped ring block (201) and the single-hole air-blocking valve (2) are an integral structure, and the U-shaped ring block (201) is fixed in the annular groove (101) by snap-fit; the lower pressure block (601) and the upper cover (6) are an integral structure.
7. The single-hole multi-channel sleeve double-sealing device as described in claim 1, characterized in that, The upper wall of the lower cover (1) is provided with an annular groove (103), and the lower wall of the upper cover (6) is provided with an annular protrusion (602) that matches the annular groove (103).