A retractable abdominal wall perforation closure device and its conveyor

Abstract

This invention relates to the field of trocar closure technology, and in particular to a retractable abdominal wall trocar closure device and its delivery system. It includes a lifting rod, the lower end of which is engaged with a closure disc. The closure disc comprises a fixed disc and a movable disc arranged symmetrically on the left and right sides. A movable disc slide is provided on the side of the fixed disc facing the movable disc, and the movable disc is slidably connected to the slide. The lower surface of the movable disc contacts the upper surface of the slide and can slide along the slide towards the fixed disc until it contacts the side of the movable disc. The fixed disc and the movable disc are respectively located on the left and right sides of the lower end of the lifting rod. Multiple barbs are vertically arranged on the upper surfaces of the fixed disc and the movable disc. The adjustable closure disc of this invention can tightly close the trocar at the incision line, ensuring a tension-free state during healing, enhancing the tightness of trocar closure, reducing bleeding, improving healing efficiency, and preventing trocar hernia caused by incomplete closure.

Description

Technical Field

[0001] This invention relates to the field of puncture hole closure technology, and in particular to a retractable abdominal wall puncture hole closure device and its delivery device. Background Technology

[0002] A trocar hole is a puncture site in the abdominal wall created by a laparoscopic surgical instrument; it is a type of abdominal surgical incision. Poor closure of the trocar hole can lead to a trocar site hernia (TSH). Trocar site hernias are primarily caused by incomplete closure of the trocar hole, infection of the trocar hole, or tearing of the trocar hole.

[0003] Except for the rectus abdominis muscle, the fibers of the abdominal wall muscles, fascia, and sheaths generally run transversely. Longitudinal incisions inevitably sever these fibers, making it easy for sutures to slip between the fibers during suturing. Sutured tissues are also frequently subjected to transverse traction from the muscles, increasing the risk of trocar hole dehiscence. Furthermore, the trocar hole is extremely small, typically only 5-15 mm in diameter, making suturing very difficult. Forcibly pulling the wound edges together during suturing can cause tissue tearing, also leading to trocar hole hernia. Obesity, advanced age, diabetes, incision infection, and prolonged drainage can all cause trocar hole relaxation, resulting in poor healing and increasing the incidence of trocar hole hernia. Data shows that if the incision heals primarily after abdominal surgery, the incidence of incisional hernia is usually below 1%, but if infection occurs, the incidence can reach 10%; in cases of wound dehiscence, it can even be as high as 30%. Literature indicates that trocar hole hernias not only easily lead to complications such as intestinal obstruction and incarcerated necrosis, forcing patients to undergo emergency surgical intervention, but also increase patient mortality. Summary of the Invention

[0004] This application addresses the shortcomings of existing manufacturing technologies by providing a retractable abdominal wall trocar closure device and its delivery system. The adjustable closure disc can tighten the trocar at the incision line, ensuring the trocar heals without tension, thus enhancing the tightness of the trocar closure, reducing bleeding, improving the healing effect, and preventing trocar hernia caused by incomplete closure.

[0005] The technical solution adopted in this invention is as follows:

[0006] A retractable abdominal wall puncture closure device and its conveyor include a lifting rod, the lower end of which is engaged with a closure disc. The closure disc includes a fixed disc and a movable disc arranged correspondingly on the left and right sides. A movable disc slide is provided on the side of the fixed disc facing the movable disc, and the movable disc is slidably connected to the movable disc slide. The lower end face of the movable disc contacts the upper end face of the movable disc slide and can slide along the movable disc slide towards the side of the fixed disc until it contacts the side of the movable disc. The fixed disc and the movable disc are respectively located on the left and right sides of the lower end of the lifting rod, and the upper end faces of the fixed disc and the movable disc are vertically oriented. Multiple barbs are provided; a sleeve is fitted onto the lifting rod, with the upper and lower ends of the lifting rod extending out of the inner hole of the sleeve respectively. Multiple transmission teeth are provided on the circumferential surface of the lower end of the sleeve, and the multiple transmission teeth are evenly distributed along the circumferential direction. A rack is provided on the side of the movable disc facing the fixed disc. The multiple transmission teeth of the sleeve can mesh with the rack. When the sleeve rotates, it can drive the rack to move accordingly, adjusting the distance between the movable disc and the fixed disc. A rack receiving groove that runs through the front and back is provided on the fixed disc facing the rack position, and the rack receiving groove can accommodate the rack extending into it.

[0007] Furthermore, the surface of the lifting rod is marked with graduations along its length, the cross-section of the lifting rod is a flat structure, and the long axis of the cross-section of the lifting rod is parallel to the surgical incision line.

[0008] Furthermore, a through mounting hole is provided at the center of the fixed plate, and two locking blocks are provided on the side of the lower end of the lifting rod. The two locking blocks are symmetrically arranged around the lifting rod, and the lower end face of the two locking blocks is flush with the lower end face of the lifting rod. The shape formed by the connection of the lower end face of the two locking blocks and the lower end face of the lifting rod matches the cross-sectional shape of the mounting hole, allowing the lower end of the lifting rod and the two locking blocks to be inserted into the mounting hole from top to bottom. Two recessed axial locking grooves are provided on the lower end face of the fixed plate, and the two axial locking grooves are located at the left and right ends of the mounting hole, respectively. On the side, after the lower end of the lifting rod and the two locking blocks enter the mounting holes, rotating the lifting rod allows the two locking blocks to be screwed into the two axial locking grooves respectively. The upper end faces of the two locking blocks and the lower end faces of the two axial locking grooves respectively contact each other, achieving axial locking of the lifting rod position. The bottom end faces of the two axial locking grooves are respectively provided with recessed circumferential locking grooves, and the upper end faces of the two locking blocks are respectively provided with upward protruding locking blocks. The two locking blocks can be respectively matched and connected in the two circumferential locking grooves to achieve circumferential locking of the lifting rod position.

[0009] Furthermore, a balance bar is provided on the side of the movable plate facing the fixed plate, and a balance bar receiving groove is provided on the fixed plate facing the position of the balance bar, which is a through groove. The balance bar can extend into the balance bar receiving groove and slide back and forth. The balance bar and the rack are provided on the left and right sides respectively.

[0010] Furthermore, a first locking protrusion is provided on the left and right sides of the front part of the balance bar, and a second locking protrusion is provided on the left and right sides of the rear part of the balance bar. The first locking protrusion is located at the front end of the balance bar receiving groove and can prevent the front part of the balance bar from falling out of the balance bar receiving groove. The second locking protrusion is located at the rear end of the balance bar receiving groove and can prevent the rear part of the balance bar from entering the balance bar receiving groove. The setting of the first and second locking protrusions can limit the position of the balance bar entering the balance bar receiving groove.

[0011] Furthermore, the fixed plate and the movable plate are provided with multiple vertically connected drug loading holes, which can be used to load drugs.

[0012] Furthermore, a fastening plate is fastened to the lower end face of the fixed plate, which can close the lower end of the mounting hole. Two protruding fastening posts are provided on the lower end face of the fixed plate, and two through-hole fastening holes are provided on the fastening plate. The two fastening posts can be fastened to the two fastening holes respectively. Multiple drug loading holes are provided on the fastening plate, and the multiple drug loading holes and multiple drug carrying holes are connected one-to-one.

[0013] Furthermore, a limit block is provided at the upper end of the sleeve.

[0014] A conveyor for an expanding abdominal wall puncture closure device includes a middle conveying pipe, with an upper conveying pipe and a lower conveying pipe connected to the upper and lower ends of the middle conveying pipe, respectively. The middle conveying pipe, the upper conveying pipe, and the lower conveying pipe are integrally formed, and the inner diameter of the upper and lower conveying pipes is larger than the inner diameter of the middle conveying pipe. A sleeve is installed inside the middle conveying pipe, and a lifting rod is installed inside the sleeve. The lower end of the lifting rod is engaged with a closure disc, which is located inside the lower conveying pipe. A limiting block is connected to the upper end of the sleeve, and a card is mounted on the sleeve. The lower end face of the card contacts the inner end face of the upper conveying pipe, and the upper end face of the card contacts the limiting block.

[0015] The beneficial effects of this invention are as follows:

[0016] The adjustable sealing disc of this invention can tighten the trocar hole of the incision line, allowing the trocar hole to heal in a tension-free state, enhancing the tightness of the trocar hole closure, reducing trocar hole bleeding, improving the trocar hole healing effect, and preventing trocar hole hernia caused by incomplete trocar hole closure. This invention provides drug-loading holes on the sealing disc, providing conditions for local drug delivery and anti-infection, and establishing a simple, effective, safe and reliable method to prevent trocar hole bleeding and trocar hole hernia. It has important value and clinical significance for improving laparoscopic technology, reducing the workload of doctors, and protecting the quality of life and health of patients. The snap-fit ​​plate of this invention can seal the snap-fit ​​hole, preventing the snap-fit ​​block from falling out of the snap-fit ​​hole. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention.

[0018] Figure 2This is a schematic diagram of the assembly of the lifting rod and sleeve of the present invention.

[0019] Figure 3 This is a perspective view of the lifting rod of the present invention.

[0020] Figure 4 This is a front perspective view of the closed disk of the present invention.

[0021] Figure 5 This is a perspective view of the back of the closed disk of the present invention.

[0022] Figure 6 This is a front perspective view of the fixing disk of the present invention.

[0023] Figure 7 This is a perspective view of the back of the fixing disc of the present invention.

[0024] Figure 8 This is a perspective view of the front of the movable disc of the present invention.

[0025] Figure 9 This is a perspective view of the back of the movable disc of the present invention.

[0026] Figure 10 This is a half-sectional view of the conveyor of the present invention.

[0027] The components are as follows: 1. Fixed plate; 2. Movable plate; 3. Lifting rod; 4. Sleeve; 5. Barb; 6. Snap-fit ​​block; 7. Locking block; 8. Axial locking groove; 9. Circumferential locking groove; 10. Mounting hole; 11. Drug loading hole; 12. Transmission gear; 13. Rack; 14. Movable plate slide; 15. Rack receiving groove; 16. Balance bar; 17. Balance bar receiving groove; 18. First snap-fit ​​protrusion; 19. Second snap-fit ​​protrusion; 20. Fastening plate; 21. Fastening post; 22. Drug loading hole; 23. Intermediate conveying pipe; 24. Upper conveying pipe; 25. Lower conveying pipe; 26. Limiting block; 27. Card. Detailed Implementation

[0028] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0029] like Figure 1 and Figure 4As shown, a retractable abdominal wall puncture hole closure device includes a lifting rod 3, with a closure disc engaged at the lower end of the lifting rod 3. The closure disc includes a fixed disc 1 and a movable disc 2, respectively arranged on the left and right sides. A movable disc slide 14 is provided on the side of the fixed disc 1 facing the movable disc 2. The movable disc 2 is slidably connected to the movable disc slide 14. The lower end face of the movable disc 2 contacts the upper end face of the movable disc slide 14 and can slide along the movable disc slide 14 towards the side of the fixed disc 1 until it contacts the side of the movable disc 2. The fixed disc 1 and the movable disc 2 are respectively located on the left and right sides of the lower end of the lifting rod 3. Multiple barbs 5 are vertically arranged on the upper end faces of the fixed disc 1 and the movable disc 2. The lifting rod 3 can drive the engaged closure disc to adhere to the abdominal wall, causing the barbs 5 to penetrate the abdominal wall and fix it, thus closing the abdominal wall puncture hole.

[0030] like Figure 3 As shown, the surface of the lifting rod 3 has graduations along its length, which visually indicate the depth to which the lifting rod 3 enters the abdominal cavity. The cross-section of the lifting rod 3 is flat, and the long axis of the cross-section of the lifting rod 3 is parallel to the surgical incision line.

[0031] like Figure 3 , Figure 6 and Figure 7 As shown, a through mounting hole 10 is provided at the center of the fixed plate 1. Two locking blocks 6 are provided on the lower end side of the lifting rod 3. The two locking blocks 6 are symmetrically arranged on the left and right sides with the lifting rod 3 as the center, and the lower end face of the two locking blocks 6 is flush with the lower end face of the lifting rod 3. The shape formed by the connection of the lower end face of the two locking blocks 6 and the lower end face of the lifting rod 3 matches the cross-sectional shape of the mounting hole 10, and the lower end of the lifting rod 3 and the two locking blocks 6 can be inserted into the mounting hole 10 from top to bottom. Two recessed axial locking grooves 8 are provided on the lower end face of the fixed plate 1. The two axial locking grooves 8 are located on the left and right sides of the mounting hole 10, respectively. After the lower end of the lifting rod 3 and the two locking blocks 6 are inserted into the mounting hole 10, rotating the lifting rod 3 allows the two locking blocks 6 to be screwed into the two axial locking grooves 8 respectively. The upper end face of the two locking blocks 6 and the lower end face of the two axial locking grooves 8 respectively contact each other, realizing the axial locking of the lifting rod 3. The bottom surfaces of the two axial locking grooves 8 are respectively provided with recessed circumferential locking grooves 9, and the upper surfaces of the two snap-fit ​​blocks 6 are respectively provided with upward protruding locking blocks 7. The two locking blocks 7 can be respectively fitted into the two circumferential locking grooves 9 to achieve circumferential locking of the lifting rod 3.

[0032] like Figure 4 and Figure 5 As shown, the fixed plate 1 and the movable plate 2 are provided with multiple vertically penetrating drug loading holes 11, which can be used to load drugs and control local infection.

[0033] like Figure 2 and Figure 4As shown, a sleeve 4 is fitted onto the lifting rod 3, with the upper and lower ends of the lifting rod 3 extending out of the inner hole of the sleeve 4. A limiting block 26 is provided at the upper end of the sleeve 4, and multiple transmission teeth 12 are provided on the circumferential surface of the lower end of the sleeve 4, with the multiple transmission teeth 12 evenly distributed along the circumferential direction. A rack 13 is provided on the side of the movable disc 2 facing the fixed disc 1. The multiple transmission teeth 12 of the sleeve 4 can mesh with the rack 13. When the sleeve 4 rotates, it can drive the rack 13 to move accordingly. By adjusting the distance between the movable disc 2 and the fixed disc 1, the movable disc 2 can be brought closer to the fixed disc 1, achieving the effect of the closed disc tightly sealing the puncture hole of the cut line.

[0034] like Figure 6 As shown, a rack receiving groove 15 is provided in the fixed disk 1 facing the rack 13, which is able to accommodate the rack 13 extending into it.

[0035] like Figure 8 and Figure 9 As shown, a balance bar 16 is provided on the side of the movable disk 2 facing the fixed disk 1, and a balance bar receiving groove 17 is provided on the fixed disk 1 facing the balance bar 16, which extends through the front and back. The balance bar 16 can extend into the balance bar receiving groove 17 and slide back and forth. The balance bar 16 and the rack 13 are set on the left and right sides respectively. The setting of the balance bar 16 can ensure that the movable disk 2 does not deflect during the movement relative to the fixed disk 1.

[0036] like Figure 8 and Figure 9 As shown, a first locking protrusion 18 is provided on the left and right sides of the front part of the balance bar 16, and a second locking protrusion 19 is provided on the left and right sides of the rear part of the balance bar 16. The first locking protrusion 18 is located at the front end of the balance bar receiving groove 17 and can prevent the front part of the balance bar 16 from falling out of the balance bar receiving groove 17. The second locking protrusion 19 is located at the rear end of the balance bar receiving groove 17 and can prevent the rear part of the balance bar 16 from entering the balance bar receiving groove 17. The setting of the first locking protrusion 18 and the second locking protrusion 19 can limit the position of the balance bar 16 entering the balance bar receiving groove 17.

[0037] like Figure 4 and Figure 5 As shown, the lower end face of the fixed disk 1 is fastened to the fastening plate 20, which can close the lower end of the mounting hole 10. Two protruding fastening posts 21 are provided on the lower end face of the fixed disk 1, and two through-hole fastening holes are provided on the fastening plate 20. The two fastening posts 21 can be fastened to the two fastening holes respectively. Multiple drug-feeding holes 22 are provided on the fastening plate 20, and the multiple drug-feeding holes 22 and multiple drug-carrying holes 11 are connected in a one-to-one correspondence.

[0038] like Figure 10As shown, a delivery device for a retractable abdominal wall puncture closure device mainly includes a middle delivery tube 23. The upper and lower ends of the middle delivery tube 23 are respectively connected to an upper delivery tube 24 and a lower delivery tube 25. The middle delivery tube 23, upper delivery tube 24, and lower delivery tube 25 are integrally formed, and the inner diameters of the upper delivery tube 24 and lower delivery tube 25 are larger than the inner diameter of the middle delivery tube 23. A sleeve 4 is installed inside the middle delivery tube 23, and a lifting rod 3 is installed inside the sleeve 4. The lower end of the lifting rod 3 is engaged with a closure disc, which is located inside the lower delivery tube 25. A limiting block 26 is connected to the upper end of the sleeve 4, and a card 27 is fitted onto the sleeve 4. The lower end face of the card 27 contacts the inner end face of the upper delivery tube 24, and the upper end face of the card 27 contacts the limiting block 26. The retractable abdominal wall puncture closure device is pre-installed in the delivery device before use and is inserted into the abdominal cavity through a puncture device during use.

[0039] The working principle of this invention is as follows: After laparoscopic surgery, when closing the abdomen, a delivery device pre-loaded with a dilating abdominal wall puncture hole closure device and matching the inner diameter of the puncture device is inserted into the puncture device until it reaches its limit. The puncture device and delivery device are pulled out of the puncture hole, and the sleeve is rotated counterclockwise to widen the distance between the movable and fixed plates to the limit. The lifting rod is lifted until resistance is felt (to bring the closure plate close to the abdominal wall), and the length of the lifting rod in the puncture hole (scale) is recorded. The long axis of the lifting rod cross-section is checked and adjusted to be parallel to the surgical incision line. The incision skin is squeezed to close the incision, and at the same time, the lifting rod is pulled upward forcefully to allow the barbed nails to pierce the abdominal wall tissue. The scale indicates that shortening by one nail length means that the nails are fully inserted. The lifting rod is pushed down without moving, confirming that the closure plate is fixed. The sleeve is rotated clockwise to bring the movable plate closer to the movable plate and close it to the locked position, tightening the puncture hole that forms the incision line. The lifting rod is rotated to the position where it is disengaged from the fixed plate, and the lifting rod and sleeve are pulled out together.

[0040] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. A retractable abdominal wall puncture closure device, comprising a lifting rod (3), characterized in that: The lower end of the lifting rod (3) is engaged with a closed disc. The closed disc includes a fixed disc (1) and a movable disc (2) arranged on the left and right sides respectively. A movable disc slide (14) is provided on the side of the fixed disc (1) facing the movable disc (2). The movable disc (2) is slidably connected to the movable disc slide (14). The lower end of the movable disc (2) contacts the upper end of the movable disc slide (14) and can slide along the movable disc slide (14) towards the side of the fixed disc (1) to contact the side of the movable disc (2). The fixed disc (1) and the movable disc (2) are respectively arranged on the left and right sides of the lower end of the lifting rod (3). Multiple barbs (5) are vertically arranged on the upper end of the fixed disc (1) and the movable disc (2). The lifting rod (3) is fitted with a sleeve Install a sleeve (4), with the upper and lower ends of the lifting rod (3) extending out of the inner hole of the sleeve (4). Multiple transmission teeth (12) are provided on the circumferential surface of the lower end of the sleeve (4). The multiple transmission teeth (12) are evenly distributed along the circumferential direction. A rack (13) is provided on the side of the movable disk (2) facing the fixed disk (1). The multiple transmission teeth (12) of the sleeve (4) can mesh with the rack (13). When the sleeve (4) rotates, it can drive the rack (13) to move accordingly, adjusting the distance between the movable disk (2) and the fixed disk (1). A rack receiving groove (15) is provided on the fixed disk (1) facing the rack (13), which can accommodate the rack (13) extending into it.

2. The expanding abdominal wall puncture sealing device as described in claim 1, characterized in that: The surface of the lifting rod (3) is marked with graduations along its length. The cross-section of the lifting rod (3) is a flat structure, and the long axis of the cross-section of the lifting rod (3) is parallel to the surgical incision line.

3. The expanding abdominal wall puncture closure device as described in claim 2, characterized in that: The fixed plate (1) has a through mounting hole (10) at its center. Two locking blocks (6) are provided on the side of the lower end of the lifting rod (3). The two locking blocks (6) are symmetrically arranged on the left and right sides with the lifting rod (3) as the center. The lower end face of the two locking blocks (6) is flush with the lower end face of the lifting rod (3). The shape formed by the connection of the lower end face of the two locking blocks (6) and the lower end face of the lifting rod (3) matches the cross-sectional shape of the mounting hole (10). The lower end of the lifting rod (3) and the two locking blocks (6) can be inserted into the mounting hole (10) from top to bottom. The lower end face of the fixed plate (1) has two recessed axial locking grooves (8). The two axial locking grooves (8) are located on the left and right sides of the mounting hole (10) respectively. On the right sides, after the lower end of the lifting rod (3) and the two locking blocks (6) enter the mounting hole (10), the lifting rod (3) is rotated, and the two locking blocks (6) can be screwed into the two axial locking grooves (8) respectively. The upper end face of the two locking blocks (6) and the lower end face of the two axial locking grooves (8) respectively contact each other to achieve axial locking of the lifting rod (3). The bottom end face of the two axial locking grooves (8) is provided with recessed circumferential locking grooves (9), and the upper end face of the two locking blocks (6) is provided with upward protruding locking blocks (7). The two locking blocks (7) can be connected to the two circumferential locking grooves (9) respectively to achieve circumferential locking of the lifting rod (3).

4. The expanding abdominal wall puncture sealing device as described in claim 3, characterized in that: The movable disc (2) is provided with a balance bar (16) facing the fixed disc (1), and the fixed disc (1) is provided with a balance bar receiving groove (17) that runs through the front and back at the position facing the balance bar (16). The balance bar (16) can extend into the balance bar receiving groove (17) and slide back and forth. The balance bar (16) and the rack (13) are provided on the left and right sides respectively.

5. The expanding abdominal wall puncture closure device as described in claim 4, characterized in that: The balance bar (16) has a first locking protrusion (18) on the left and right sides of the front part and a second locking protrusion (19) on the left and right sides of the rear part. The first locking protrusion (18) is located at the front end of the balance bar receiving groove (17) and can prevent the front part of the balance bar (16) from coming out of the balance bar receiving groove (17). The second locking protrusion (19) is located at the rear end of the balance bar receiving groove (17) and can prevent the rear part of the balance bar (16) from entering the balance bar receiving groove (17). The setting of the first locking protrusion (18) and the second locking protrusion (19) can limit the position of the balance bar (16) entering the balance bar receiving groove (17).

6. The expanding abdominal wall puncture closure device as described in claim 5, characterized in that: The fixed disk (1) and the movable disk (2) are provided with multiple vertically penetrating drug loading holes (11), which can be used to load drugs.

7. The expanding abdominal wall puncture closure device as described in claim 6, characterized in that: The lower end face of the fixed plate (1) is fastened to the fastening plate (20), which can close the lower end of the mounting hole (10). The lower end face of the fixed plate (1) is provided with two protruding fastening posts (21). The fastening plate (20) is provided with two through fastening holes. The two fastening posts (21) can be fastened to the two fastening holes respectively. The fastening plate (20) is provided with multiple drug loading holes (22). The multiple drug loading holes (22) and the multiple drug loading holes (11) are connected one-to-one.

8. The expanding abdominal wall puncture closure device as described in claim 7, characterized in that: A limiting block (26) is provided at the upper end of the sleeve (4).

9. A conveyor for a swiveling abdominal wall perforation closure device as described in any one of claims 1-8, characterized in that: The system includes an intermediate conveying pipe (23), the upper and lower ends of which are connected to an upper conveying pipe (24) and a lower conveying pipe (25), respectively. The intermediate conveying pipe (23), the upper conveying pipe (24), and the lower conveying pipe (25) are integrally formed, and the inner diameter of the upper conveying pipe (24) and the lower conveying pipe (25) is larger than the inner diameter of the intermediate conveying pipe (23). A sleeve (4) is provided inside the intermediate conveying pipe (23), and a lifting rod (3) is provided inside the sleeve (4). The lower end of the lifting rod (3) is engaged with a sealing plate, which is located inside the lower conveying pipe (25). A limiting block (26) is connected to the upper end of the sleeve (4), and a card (27) is mounted on the sleeve (4). The lower end face of the card (27) contacts the inner end face of the upper conveying pipe (24), and the upper end face of the card (27) contacts the limiting block (26).

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