An abdominal wall port closure and its delivery

Abstract

This invention relates to the field of trocar closure technology, and in particular to an abdominal wall trocar closure device and its delivery system. It includes a closing disc and a lifting rod. The lower end of the lifting rod is detachably connected to the center of the closing disc. The lifting rod is perpendicular to the upper and lower end faces of the closing disc, and can lift and operate the closing disc. Multiple barbs are fixed to the upper end face of the closing disc. A through-hole is provided at the center of the closing disc. A locking block is connected to the lower end of the lifting rod. The shape of the locking block matches the locking hole, and the upper end face of the locking block is attached to the lower end face of the closing disc. The locking block and the locking hole are staggered in the circumferential direction. This invention can easily and reliably complete the trocar closure operation, solving the difficulty and time-consuming nature of suturing in small trocars. Simultaneously, it allows the trocar to heal in a tension-free state, avoiding the cutting of the thin peritoneum by the suture, preventing trocar rupture, and improving the healing effect.

Description

Technical Field

[0001] This invention relates to the field of puncture hole sealing devices, and in particular to an abdominal wall puncture hole sealing device and its delivery device. Background Technology

[0002] A trocar is a hole made in the abdominal wall by a trocar used in laparoscopic surgery; it is a type of abdominal surgical incision. Poor closure of the trocar can lead to a trocar hernia. Trocar hernias are mainly caused by incomplete closure of the trocar in the abdominal wall, infection of the trocar, or trocar dehiscence.

[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. Furthermore, the sutured tissue is frequently subjected to transverse traction from the muscles, making it prone to tearing of the trocar hole. Moreover, because the trocar hole is tiny, typically 5-15 mm in diameter, suturing is very difficult. Forcibly pulling the wound edges together during suturing can cause tissue tearing, also leading to a trocar hole hernia. Data shows that if the abdominal incision heals primarily after surgery, the incidence of incisional hernias is usually below 1%, but if infection occurs, the incidence can reach 10%, and in cases of wound dehiscence, it can 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 an abdominal wall puncture hole closure device and its delivery system. This device can easily and reliably complete the puncture hole closure operation, ensuring that the puncture hole heals in a tension-free state, thereby improving the healing effect and preventing puncture hole hernia caused by incomplete closure.

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

[0006] An abdominal wall puncture closure device includes a closing disc and a lifting rod. The lower end of the lifting rod is detachably connected to the center of the closing disc. The lifting rod is perpendicular to the upper and lower end faces of the closing disc and can lift and operate the closing disc. Multiple barbs are fixed to the upper end face of the closing disc. A vertically penetrating locking hole is provided at the center of the closing disc. A locking block is connected to the lower end of the lifting rod. The shape of the locking block matches the locking hole. The upper end face of the locking block is attached to the lower end face of the closing disc, and the locking block and the locking hole are staggered in the circumferential direction.

[0007] Furthermore, a limiting block is connected to the lower part of the lifting rod. The limiting block is located above the locking block and fits against the upper surface of the closing disc. The limiting block achieves the axial limiting function of the lifting rod.

[0008] Furthermore, multiple barbs are perpendicular to the upper and lower end faces of the closed disc, or multiple barbs are inclined at an angle towards the center.

[0009] Furthermore, the front end of the barb is provided with a barb, the upper end of which is sharp. The cross-sectional area of ​​the barb increases from top to bottom, and the cross-sectional area of ​​the bottommost end of the barb is greater than or equal to the cross-sectional area of ​​the barb.

[0010] Furthermore, the closing disc includes a disc portion and mounting rod portions symmetrically connected to the left and right sides of the disc portion. The locking hole is located at the center of the disc portion, and multiple barbs are connected to the upper end faces of the two mounting rod portions.

[0011] Furthermore, the closed disc includes a disc portion, an annular portion on the outer circumference of the disc portion, and multiple radially arranged mounting rods connected to the outer surface of the disc portion. The annular portion is connected to the middle of the multiple mounting rods, and the multiple mounting rods are evenly distributed along the circumferential direction. The locking hole is located at the center of the disc portion, and multiple barbs are connected to the upper end face of the multiple mounting rods.

[0012] Furthermore, a locking groove is provided at the center of the lower end face of the closed disc. The shape of the locking groove is the same as that of the locking hole. The locking groove and the locking hole form an angle. After the locking block in the locking hole rotates to a certain angle, it can enter the locking groove. The locking groove can accommodate the locking block and restrict the rotation of the locking block.

[0013] Furthermore, the closed disk surface is provided with multiple vertically penetrating drug-loading holes, which can be used to load drugs.

[0014] Furthermore, a fixing plate is provided below the closed disc, and two protruding fastening posts are provided on the lower end face of the closed disc. Two through-hole fastening holes are provided on the fixing plate, and the two fastening posts can be correspondingly fastened and connected in the two fastening holes to realize the connection between the closed disc and the fixing plate. The fixing plate can enclose the locking block in the locking groove. Multiple drug loading holes are provided on the fixing plate, and the multiple drug loading holes and multiple drug carrying holes are connected one-to-one.

[0015] A delivery device for an abdominal wall puncture closure device includes a central receiving tube. The upper and lower ends of the central receiving tube are respectively provided with an upper mounting part and a lower receiving part. The upper mounting part, the lower receiving part, and the central receiving tube are integrally formed. A lifting rod is provided in the central receiving tube. The lower end of the lifting rod is detachably connected to a closing disc. The closing disc is stored in the lower receiving part. The upper end of the lifting rod extends into the upper mounting part and is secured with a card. The card can prevent the upper end of the lifting rod from moving downward. The upper mounting part is used to connect to the external interface of the puncture device.

[0016] The beneficial effects of this invention are as follows:

[0017] This invention enables simple and reliable trocar closure, overcoming the difficulties and time-consuming nature of suturing in small trocar holes. Simultaneously, it allows the trocar hole to heal in a tension-free state, preventing sutures from cutting the thin peritoneum, eliminating trocar hole rupture, and improving healing efficiency. Furthermore, the invention incorporates a drug-loaded port on the closure disc, providing conditions for local drug delivery for infection control and hemostasis. This establishes a simple, effective, safe, and reliable method to prevent trocar hernias, and has significant value and clinical implications for improving laparoscopic techniques, reducing the workload of physicians, and protecting patients' health and well-being. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention.

[0019] Figure 2 This is a top view of the closed disk of the present invention.

[0020] Figure 3 This is a perspective view of the lifting rod of the present invention.

[0021] Figure 4 This is a structural diagram of another embodiment of the closed disk of the present invention.

[0022] Figure 5 This is a structural diagram of a third embodiment of the closed disk of the present invention.

[0023] Figure 6 This is a structural diagram of the lower end face of the closed disk of the present invention.

[0024] Figure 7 This is a structural diagram of another embodiment of the lower end face of the closed disk of the present invention.

[0025] Figure 8 This is a perspective view of the conveyor of the present invention.

[0026] Figure 9 This is a half-sectional view of the conveyor of the present invention.

[0027] Among them: 10. Closing disc; 11. Locking hole; 12. Barb; 13. Drug loading hole; 14. Barb; 15. Disc part; 16. Mounting rod part; 17. Ring part; 18. Locking groove; 20. Lifting rod; 21. Limiting block; 22. Locking block; 30. Middle storage tube; 31. Lower storage part; 32. Upper mounting part; 33. Card; 40. Fixing plate; 41. Fastening post; 42. Drug loading hole. Detailed Implementation

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

[0029] like Figure 1As shown, an abdominal wall puncture closure device mainly includes a closing disc 10 and a lifting rod 20. The lower end of the lifting rod 20 is detachably connected to the center position of the closing disc 10. The lifting rod 20 is perpendicular to the upper and lower end faces of the closing disc 10, and the lifting rod 20 can lift and operate the closing disc 10.

[0030] like Figure 2 and Figure 3 As shown, the closure disc 10 is a circular rigid sheet with a thickness of 0.5~5mm. The upper and lower surfaces of the closure disc 10 are the peritoneal surface facing the peritoneum and the peritoneal surface facing the abdominal cavity, respectively. The lifting rod 20 is a flat rod-shaped structure. The long axis of the cross-section of the lifting rod 20 is parallel to the surgical incision line. The surface of the lifting rod 20 is marked with graduations along its length, which display the depth of the closure disc 10 inserted into the abdominal cavity in real time.

[0031] like Figure 2 and Figure 3 As shown, a vertically penetrating, irregularly shaped locking hole 11 is provided at the center of the closed disc 10. A locking block 22 is connected to the lower end of the lifting rod 20. The shape of the locking block 22 matches the locking hole 11, and the upper surface of the locking block 22 is attached to the lower surface of the closed disc 10. The locking block 22 and the locking hole 11 are offset circumferentially, thus achieving an axial locking connection between the lifting rod 20 and the closed disc 10. The locking block 22 can rotate circumferentially. When the locking block 22 rotates to the position of the locking hole 11, it can pass through the locking hole 11 from below and be removed, thus separating the lifting rod 20 from the closed disc 10.

[0032] like Figure 1 and Figure 3 As shown, the lower part of the lifting rod 20 is connected to the limiting block 21. The limiting block 21 is located above the locking block 22. The limiting block 21 is attached to the upper end face of the closing plate 10, and the limiting block 21 cannot enter the locking hole 11. The limiting block 21 achieves the axial limiting effect on the lifting rod 20.

[0033] like Figure 1 and Figure 2 As shown, multiple barbs 12 are fixed to the upper surface of the closing disc 10. These barbs 12 are perpendicular to the upper and lower surfaces of the closing disc 10, or they are inclined at an angle of 0-30° towards the center. The barbs 12 can penetrate the abdominal wall tissue after a lifting operation, thus fixing and sealing the puncture hole with the closing disc 10, forming a fixed, tension-free puncture hole closure and providing hemostasis through compression. The cross-sectional shape of the barbs 12 is circular or elliptical, and the surface of the barbs 12 can be provided with threads or a textured structure.

[0034] like Figure 1 and Figure 2As shown, the front end of the barbed nail 12 is provided with a barb 14. The upper end of the barb 14 is sharp, which makes it easy to penetrate the abdominal wall tissue. The cross-sectional area of ​​the barb 14 increases from top to bottom, and the cross-sectional area of ​​the lowermost end of the barb 14 is greater than or equal to the cross-sectional area of ​​the barb 12, so that the barb 14 is not easy to fall out after penetrating the abdominal wall tissue.

[0035] During use, the surgeon can use the lifting rod 20 to pull the closing disc 10 towards the abdominal wall, allowing the barbed nails 12 to penetrate and fix the abdominal wall tissue, sealing the puncture hole. Then, by rotating the lifting rod 20, the locking block 22 can pass through the locking hole 11 from below and be removed, thus separating the lifting rod 20 from the closing disc 10. Finally, the lifting rod 20 can be pulled out of the body.

[0036] like Figure 2 and Figure 3 As shown, the closed disk 10 has multiple vertically penetrating drug-loading holes 13 on its surface. Drugs can be loaded into the drug-loading holes 13 to control local infection in the puncture hole.

[0037] like Figure 4 As shown, the closing disc 10 includes a disc portion 15 and mounting rod portions 16 symmetrically connected to the left and right sides of the disc portion 15. A locking hole 11 is located at the center of the disc portion 15, and multiple barbs 12 are connected to the upper surfaces of the two mounting rod portions 16. Without affecting usability, the above structure maximizes the lightweight design of the closing disc 10, significantly reducing its overall weight and size, making it more convenient to use.

[0038] like Figure 5 As shown, the closed disc 10 includes a disc portion 15, an annular portion 17 surrounding the outer circumference of the disc portion 15, and a plurality of radially arranged mounting rods 16 connected to the outer surface of the disc portion 15. The annular portion 17 is connected to the center of the plurality of mounting rods 16, and the plurality of mounting rods 16 are evenly distributed along the circumferential direction. A locking hole 11 is located at the center of the disc portion 15, and a plurality of barbs 12 are connected to the upper end faces of the plurality of mounting rods 16.

[0039] like Figure 6 As shown, a locking groove 18 is provided at the center of the lower end face of the closed disk 10. The shape of the locking groove 18 is the same as that of the locking hole 11. The locking groove 18 and the locking hole 11 form an angle. After the locking block 22 in the locking hole 11 rotates a certain angle, it can enter the locking groove 18. The locking groove 18 can accommodate the locking block 22 and restrict the rotation of the locking block 22.

[0040] like Figure 6 and Figure 7As shown, a fixing plate 40 is provided below the closed disc 10. Two protruding fastening posts 41 are provided on the lower end face of the closed disc 10. The fixing plate 40 has two through-hole fastening holes. The two fastening posts 41 can be correspondingly fastened and connected in the two fastening holes to realize the connection between the closed disc 10 and the fixing plate 40. The fixing plate 40 can enclose the locking block 22 in the locking groove 18. The fixing plate 40 has multiple drug loading holes 42, and the multiple drug loading holes 42 and multiple drug loading holes 13 are connected one-to-one.

[0041] like Figure 8 and Figure 9 As shown, a delivery device for an abdominal wall puncture closure device mainly includes a central receiving tube 30. The upper and lower ends of the central receiving tube 30 are respectively provided with an upper mounting part 32 and a lower receiving part 31, which are integrally formed with the central receiving tube 30. A lifting rod 20 is provided in the central receiving tube 30. The lower end of the lifting rod 20 is detachably connected to a closing disc 10, which is housed in the lower receiving part 31. The upper end of the lifting rod 20 extends into the upper mounting part 32 and is secured with a clip 33, which prevents the upper end of the lifting rod 20 from moving downwards. The upper mounting part 32 is used to connect to the external interface of the trocar. The abdominal wall puncture closure device is pre-installed in the delivery device before use and is inserted into the abdominal cavity through the trocar during use.

[0042] The working principle of this invention is as follows: After laparoscopic surgery, when closing the abdomen, a delivery device pre-loaded with an 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. Next, the clip 33 at the top of the lifting rod 20 is removed, and then the puncture device along with the delivery device is pulled out of the puncture hole. Then, the lifting rod 20 is lifted until resistance is felt (making the closing disc 10 close to the abdominal wall), and the length of the lifting rod 20 within the puncture hole (scale) is recorded. Next, the long axis of the lifting rod 20 is adjusted to be parallel to the surgical incision line, the incision skin is squeezed to close the incision tightly, and simultaneously, the lifting rod 20 is forcefully pulled upwards to allow the barbed nails 12 to pierce the abdominal wall tissue; the scale indicates that shortening by one nail length indicates full penetration. Then, the lifting rod 20 is pushed down and held still to confirm that the closing disc 10 is fixed. The lifting rod 20 is rotated until it is disengaged from the closing disc 10, and finally, the lifting rod 20 is pulled out.

Claims

1. An abdominal wall puncture closure device, comprising a closing disc (10) and a lifting rod (20), characterized in that: The lower end of the lifting rod (20) is detachably connected to the center of the closed disc (10). The lifting rod (20) is perpendicular to the upper and lower end faces of the closed disc (10), and the lifting rod (20) can lift and operate the closed disc (10). Multiple barbs (12) are fixed to the upper end face of the closed disc (10). A locking hole (11) is provided in the center of the closed disc (10). The lower end of the lifting rod (20) is connected to a locking block (22). The shape of the locking block (22) matches the locking hole (11). The upper end face of the locking block (22) is attached to the lower end face of the closed disc (10), and the locking block (22) and the locking hole (11) are circumferentially aligned. The locking groove (18) is set at the center of the lower end face of the closed disc (10). The shape of the locking groove (18) is the same as that of the locking hole (11). The locking groove (18) and the locking hole (11) form an angle. The locking block (22) in the locking hole (11) can enter the locking groove (18) after rotating a certain angle. The locking groove (18) can accommodate the locking block (22) and restrict the rotation of the locking block (22). The locking block (22) can pass through the locking hole (11) from below and be taken out, so as to separate the lifting rod (20) and the closed disc (10) and finally pull the lifting rod (20) out of the body.

2. The abdominal wall puncture sealing device as described in claim 1, characterized in that: The lower part of the lifting rod (20) is connected to the limiting block (21), the limiting block (21) is located above the locking block (22), the limiting block (21) is attached to the upper end face of the closing plate (10), and the limiting block (21) achieves the axial limiting effect of the lifting rod (20).

3. The abdominal wall puncture sealing device as described in claim 1, characterized in that: The plurality of barbs (12) are perpendicular to the upper and lower end faces of the closed disc (10) or the plurality of barbs (12) are inclined at an angle toward the center.

4. The abdominal wall puncture sealing device as described in claim 3, characterized in that: The front end of the barb (12) is provided with a barb (14), the upper end of the barb (14) is sharp, the cross-sectional area of ​​the barb (14) increases from top to bottom, and the cross-sectional area of ​​the bottom end of the barb (14) is greater than or equal to the cross-sectional area of ​​the barb (12).

5. The abdominal wall puncture sealing device as described in claim 1, characterized in that: The closed disc (10) includes a disc portion (15) and mounting rod portions (16) symmetrically connected on the left and right sides of the disc portion (15). The locking hole (11) is located at the center of the disc portion (15), and multiple barbs (12) are connected to the upper end faces of the two mounting rod portions (16).

6. The abdominal wall puncture sealing device as described in claim 1, characterized in that: The closed disc (10) includes a disc portion (15), an outer ring portion (17) is provided on the outer ring of the disc portion (15), a plurality of radially arranged mounting rod portions (16) are connected to the outer surface of the disc portion (15), the middle of the plurality of mounting rod portions (16) is connected to the ring portion (17), the plurality of mounting rod portions (16) are evenly distributed along the circumferential direction, the locking hole (11) is located at the center of the disc portion (15), and a plurality of barbs (12) are connected to the upper end face of the plurality of mounting rod portions (16).

7. The abdominal wall puncture sealing device as described in claim 1, characterized in that: The closed disk (10) has multiple vertically penetrating drug-carrying holes (13) on its surface, and the drug-carrying holes (13) can be filled with drugs.

8. The abdominal wall puncture sealing device as described in claim 7, characterized in that: A fixing plate (40) is provided below the closed disc (10). Two protruding fastening posts (41) are provided on the lower end face of the closed disc (10). Two through-hole fastening holes are provided on the fixing plate (40). The two fastening posts (41) can be fastened and connected in the two fastening holes to realize the connection between the closed disc (10) and the fixing plate (40). The fixing plate (40) can enclose the locking block (22) in the locking groove (18). Multiple drug loading holes (42) are provided on the fixing plate (40). The multiple drug loading holes (42) and multiple drug loading holes (13) are connected one-to-one.

9. A conveyor for an abdominal wall puncture closure device as described in any one of claims 1-8, characterized in that: The device includes an intermediate receiving tube (30), with an upper mounting part (32) and a lower receiving part (31) respectively provided at the upper and lower ends of the intermediate receiving tube (30). The upper mounting part (32), the lower receiving part (31) and the intermediate receiving tube (30) are integrally formed. A lifting rod (20) is provided in the intermediate receiving tube (30). The lower end of the lifting rod (20) is detachably connected to a closing disc (10). The closing disc (10) is stored in the lower receiving part (31). The upper end of the lifting rod (20) extends into the upper mounting part (32) and is fitted with a card (33). The card (33) can prevent the upper end of the lifting rod (20) from moving downward. The upper mounting part (32) is used to connect to the external interface of the puncture device.

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