A fascia closure device based on double-end band-line needle transmission

Abstract

The utility model relates to a fascia closer based on double -end band line needle transmission, including closing outer tube, closing inner core, pressing rod and double -end needle, closing outer tube includes inner core connecting pipe section and card needle pipe section, card needle pipe section is equipped with surgical tissue containing area, and card needle pipe section installs lock needle silica gel in, closing inner core is equipped with lock needle structure, and lock needle structure includes sliding channel, card needle piece and needle hole, the rear end of card needle piece is equipped with card needle boss, the rear end of pressing rod is connected with closing inner core, and the pressing rod is installed with the knob, the rear end of knob is connected with connecting rod, and connecting rod extends to sliding channel, the rear end of connecting rod is equipped with extrusion block with the upper side of card needle piece abuts, utilize double -end needle, closing outer tube and closing inner core's linkage, realize double -end needle in human body tissue's " transmission " and insert, realize single operation in the running of suture in fascia, ensure the stability of suture, reduce the blind field operation risk.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a fascia closure device based on double-headed needle with thread transmission. Background Technology

[0002] In laparoscopic surgery, fascial closure of the trocar port is a crucial step in postoperative wound management. Incomplete fascial closure can easily lead to serious complications such as incisional hernia or postoperative bleeding, affecting the patient's postoperative recovery and overall treatment outcome. Currently, traditional fascial closure devices are commonly used in clinical practice to perform this procedure, but many problems still arise in actual use.

[0003] First, the operation of traditional closure devices is relatively cumbersome. Doctors need to repeatedly push the instrument and adjust the needle insertion angle under limited visibility, especially in blind operation (such as closure after the camera is withdrawn). This significantly increases the difficulty of the operation, prolonging the operation time and increasing the risk of accidental injury to abdominal organs or blood vessels. Second, the structural design of traditional instruments is imperfect. Some products have poor sealing of the suture hole, and the suture is prone to falling out during the threading process, affecting the quality and strength of the suture and potentially requiring re-suturing or remedial procedures.

[0004] Furthermore, traditional fascial closure devices generally suffer from insufficient puncture force and rigidity when dealing with obese patients or those with thick abdominal wall tissue, making it difficult to effectively penetrate the fascial layer and reducing their applicability. In addition, some instruments require multiple needle insertions and withdrawals to complete the suture, leading to low operational efficiency, prolonged intraoperative dwell time, and increased risk of infection. Therefore, there is an urgent clinical need for a new type of fascial closure device with a more stable structure, smoother puncture, more reliable sutures, and simpler operation to improve intraoperative safety and closure efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a fascia closure device based on a double-ended needle with sutures, which can utilize the transmission mechanism of the double-ended needle to complete the movement of the suture in the fascia in a single operation, reducing the risk of blind operation.

[0006] This utility model is achieved through the following technical solution:

[0007] A fascia closure device based on double-ended needle with thread transmission includes a closure outer tube, a closure inner core, a pressing rod, and double-ended needles; the double-ended needles include a needle tube and needle tips formed at both ends of the needle tube, a threading hole is opened in the middle of the needle tube, and needle retaining grooves are provided on both sides of the needle tube near the needle tips.

[0008] The closed outer tube includes an inner core connecting tube section and a locking needle tube section. The closed inner core is slidably connected within the inner core connecting tube section. The locking needle tube section is connected to the rear end of the inner core connecting tube section. The locking needle tube section is provided with a surgical tissue accommodating area, and a locking needle silicone is installed inside the locking needle tube section.

[0009] The closed inner core is equipped with a locking pin structure, which includes a sliding channel within the closed inner core, a locking pin piece disposed within the sliding channel, and a pin hole at the rear end of the closed inner core, the pin hole communicating with the sliding channel; a recessed area is provided within the sliding channel, the rear end of the recessed area communicating with the pin hole, and a connecting groove formed on the front sidewall of the recessed area; the front end of the locking pin piece is installed in the connecting groove; a locking pin protrusion is provided at the rear end of the locking pin piece, the locking pin protrusion engaging with the locking pin groove of the double-ended pin; a compression spring is installed in the recessed area, the compression spring abutting against the lower side of the locking pin piece; the compression spring can push the locking pin piece upwards, causing the locking pin protrusion of the locking pin piece to move away from the locking pin groove of the double-ended pin;

[0010] The rear end of the pressing rod is connected to the closed inner core; a knob that can slide back and forth is installed on the pressing rod; a connecting rod is connected to the rear end of the knob, and the connecting rod can slide into the sliding channel of the closed inner core; the rear end of the connecting rod is provided with a pressing block that abuts against the upper side of the pin clip; the pressing block can press the pin clip downward, so that the pin clip protrusion of the pin clip moves towards the direction of the double-headed pin clip groove.

[0011] Compared with previous technologies, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model utilizes the linkage of a double-ended needle, a closed outer tube, and a closed inner core to achieve the "transfer" and insertion of the double-ended needle within human tissue, enabling the suture to travel through the fascia in a single operation, ensuring suture stability while reducing the risk of blind operation.

[0013] 2. The locking silicone and the locking pin piece used for temporary fixation work together to secure the double-ended pins and prevent them from slipping out. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the split structure of this utility model;

[0016] Figure 3 This is a schematic diagram of a closed outer tube.

[0017] Figure 4 This is an enlarged structural diagram of the groove on the closed outer tube;

[0018] Figure 5 This is a schematic diagram of a closed inner core.

[0019] Figure 6 This is a schematic diagram of the anterior inner core region;

[0020] Figure 7 This is a schematic diagram of the structure of the rear inner core area;

[0021] Figure 8 This is a schematic diagram of the pressing rod.

[0022] Figure 9 This is a schematic diagram of the structure of the front rod of the pressing rod;

[0023] Figure 10 This is a schematic diagram of the structure of a double-headed needle;

[0024] Figure 11 This is a schematic diagram of the connecting rod structure;

[0025] Figure 12 This is a schematic diagram of the structure of the fixed base;

[0026] Figure 13 This is a schematic diagram of the first insertion point of a double-ended needle into human tissue.

[0027] Figure 14 A diagram illustrating the first insertion point of a double-ended needle;

[0028] Figure 15 A diagram showing the point where the double-ended needle exits for the first time;

[0029] Figure 16 This is a diagram showing the second insertion point of a double-ended needle within human tissue.

[0030] Figure 17 A diagram illustrating the point where a double-ended needle is inserted for the second time;

[0031] Figure 18 A diagram illustrating the point where a double-ended needle enters for the second time;

[0032] Figure 19 This is an illustration of the suture line left after the present invention passes through human tissue twice.

[0033] Figure 20 for Figure 19 A diagram showing the finished result of suture stitching.

[0034] Labeling Explanation: 11 Closed Outer Tube, 111 Inner Core Connecting Tube Section, 111A Lower Through-hole, 112 Pin Locking Tube Section, 112A Locking Pin Silicone, 112B Groove, 112C Protrusion, 12 Closed Inner Core, 121 Sliding Channel, 122 Pin Locking Plate, 122A Pin Locking Protrusion, 123 Pin Hole, 124 Recessed Area, 124A Connecting Groove, 125 Front Inner Core Section, 125A Second Sliding Groove, 126 Rear Inner Core Section, 126A Recessed Groove, 127 Compression Spring, 13 Pressing Rod, 131 Toggle, 132 Sliding Groove, 133 Front Rod, 133A First Sliding Groove, 134 Rear Rod, 14 Double-ended Pin, 141 Needle Tube, 142 Needle Head, 143 Thread Hole, 144 Pin Locking Groove, 15 Connecting rod, 151 pressing block, 152 first connecting rod, 153 second connecting rod, 16 fixed seat, 161 limiting tube, 162 guide strip, 162A limiting tenon, 17 cover plate. Detailed Implementation

[0035] The present invention will now be described in detail with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description:

[0036] like Figures 1 to 12 As shown, a fascia closure device based on double-ended needle with thread transmission includes a closure outer tube 11, a closure inner core 12, a pressing rod 13, and a double-ended needle 14; the double-ended needle 14 includes a needle tube 141 and needle tips 142 formed at both ends of the needle tube 141, a thread hole 143 is provided in the middle of the needle tube 141, and needle retaining grooves 144 are provided on both sides of the needle tube 141 near the needle tips 142;

[0037] The closed outer tube 11 includes an inner core connecting tube section 111 and a locking needle tube section 112. The closed inner core 12 is slidably connected within the inner core connecting tube section 111. The locking needle tube section 112 is connected to the rear end of the inner core connecting tube section 111. The locking needle tube section 112 is provided with a surgical tissue accommodating area, and a locking needle silicone 112A is installed inside the locking needle tube section 112. The surgical tissue accommodating area is a groove 112B provided on the lower side wall of the locking needle tube section 112, so that the rear end of the locking needle tube section 112 forms a downwardly protruding protrusion 112C.

[0038] The front sidewall of the protrusion 112C has a mounting groove for installing the locking pin silicone 112A.

[0039] The closed inner core 12 is provided with a locking pin structure, which includes a sliding channel 121 within the closed inner core 12, a locking pin piece 122 disposed within the sliding channel 121, and a pin hole 123 at the rear end of the closed inner core 12, the pin hole 123 communicating with the sliding channel 121; a recessed area 124 is provided within the sliding channel 121, the rear end of the recessed area 124 communicating with the pin hole 123, and a connecting groove 124A is formed on the front sidewall of the recessed area 124; the locking pin piece 122... The front end of 22 is installed in the connecting groove 124A; the rear end of the pin clip 122 is provided with a pin clip protrusion 122A, which cooperates with the pin clip groove 144 of the double-ended pin 14; a compression spring 127 is installed in the recessed area 124, which abuts against the lower side of the pin clip 122; the compression spring 127 can push the pin clip 122 upward, so that the pin clip protrusion 122A of the pin clip 122 moves away from the pin clip groove 144 of the double-ended pin 14;

[0040] The rear end of the pressing rod 13 is connected to the closed inner core 12; a sliding knob 131 is installed on the pressing rod 13; a connecting rod 15 is connected to the rear end of the knob 131, and the connecting rod 15 extends slidably into the sliding channel 121 of the closed inner core 12; the rear end of the connecting rod 15 is provided with a pressing block 151 that abuts against the upper side of the pin clip 122; the pressing block 151 can press the pin clip 122 downward, so that the pin clip protrusion 122A of the pin clip 122 moves toward the pin clip groove 144 of the double-headed needle 14.

[0041] This invention utilizes the linkage of a double-ended needle, a closed outer tube, and a closed inner core to achieve the "transfer" and insertion of the double-ended needle within human tissue. This allows for the completion of suture movement within the fascia in a single operation, ensuring suture stability while reducing the risks associated with blind-view procedures. The locking silicone needle and the retaining pin work together to secure the double-ended needle and prevent slippage.

[0042] Furthermore, the front of the pressing rod 13 is provided with a first sliding track extending in the front-rear direction, and sliding grooves 132 are provided on both sides of the first sliding track; the dial 131 is located in the first sliding track, and a pin that mates with the sliding groove 132 is installed on the dial 131. The connecting rod 15 includes a first connecting rod 152 connected to the dial 131 and a second connecting rod 153 connected to the rear end of the first connecting rod 152; the second connecting rod 153 extends into the sliding channel 121 of the closed inner core 12. The pressing rod 13 is divided into a front rod 133 and a rear rod 134, and the rear rod 134 is connected to the closed inner core 12; the diameter of the front rod 133 is larger than that of the rear rod 134, and a first sliding groove 133A that mates with the first connecting rod 152 is provided on the upper side wall of the front rod 133;

[0043] The closed inner core 12 is divided into a front inner core section 125 and a rear inner core section 126, and the rear rod 134 is connected to the front inner core section 125. The upper side wall of the front inner core section 125 is provided with a second sliding groove 125A that cooperates with the first connecting rod 152. The interior of the rear inner core section 126 forms a sliding channel 121, and the upper side wall of the rear inner core section 126 is provided with a recessed groove 126A leading to the sliding channel 121. The second connecting rod 153 extends into the sliding channel 121 through the recessed groove 126A. The pressing block 151 is located at the rear end of the second connecting rod 153. It also includes a fixing seat 16, which includes a limiting tube 161 and a guide strip 162; the rear rod 134 of the pressing rod 13 passes through the limiting tube 161 and is connected to the front inner core section 125, and the rear end of the front rod 133 abuts against the front end of the limiting tube 161; the guide strip 162 is connected to the lower side wall of the rear end of the limiting tube 161 and extends rearward, so that the guide strip 162 is attached to the outside of the front rod 133;

[0044] A limiting tenon 162A is installed inside the guide bar 162;

[0045] The inner core connecting pipe section 111 has a through-hole 111A in its pipe wall; a limiting tenon 162A is installed in the opening of the through-hole 111A, which is connected to the limiting tenon 162A; so that the guide strip 162 is firmly attached to the opening of the through-hole 111A.

[0046] It should be noted that the fixing seat 16 serves as a guide for the installation of the pressing rod 13, which in turn is connected to the closed inner core 12, thus guiding the installation of both the pressing rod 13 and the closed inner core 13. Furthermore, through the cooperation of the limiting tenon 162A and the limiting mortise, the fixing seat 16 cannot rotate radially within the closed outer tube 11, thereby preventing the pressing rod 13 and the closed inner core 13 from rotating radially within the closed outer tube 11.

[0047] Furthermore, the rear inner core section 126 is also provided with a cover plate 17, which can be installed on the rear inner core section 126 to cover the sliding channel 121.

[0048] The structure of the cover plate 17 can play a role in stabilizing the overall position of the inner core. If necessary, the pin 122 and the compression spring 127 in the inner core section 126 can be adjusted by opening the cover plate 17.

[0049] Furthermore, the outer wall of the needle tube 141 at the threading hole 143 is provided with a visible groove. The visible groove can help the user quickly determine the position of the threading hole 143.

[0050] Furthermore, the locking pin silicone 112A is provided with a locking pin groove for gripping the double-ended pin 14, and a locking block is provided in the locking pin groove to cooperate with the pin-holding groove 144 of the double-ended pin 14. The locking pin groove and the locking block can better limit the double-ended pin 14 and prevent the double-ended pin 14 from slipping off the locking pin silicone 112A.

[0051] In summary, the usage of this utility model is as follows, and the specific effects are as follows: Figures 13 to 20 As shown:

[0052] The initial state of this utility model is as follows: Figure 1 As shown, the double-ended needle is confined within the closed inner core and locked by a retainer pin; the double-ended needle has been pre-threaded with stitches.

[0053] Usage status 1, such as Figure 13 As shown, the entire device is inserted into the tissue to be sutured. At this time, the two sides of the tissue need to be sutured by the action of the suture thread. The first insertion point of the double-headed needle is marked in the figure.

[0054] Usage status 2, such as Figure 14 The image shown illustrates the effect of pushing the push lever to insert the double-ended needle into the first insertion point.

[0055] Usage status 3, such as Figure 15 As shown, at this point, the double-ended needle has passed through the first needle exit point and is locked in the locking needle silicone. By pushing the dial, the squeezing block at the rear end of the connecting rod is released from the restriction on the locking pin, so that the compression spring pops out the locking pin, and the locking pin can no longer limit the double-ended needle. At this time, pushing the pressing rod moves the closing inner core, so that the double-ended needle can remain in the locking needle silicone.

[0056] Usage status 4, such as Figure 16 As shown, rotate the entire invention to the second needle insertion point; at this time, push the pressing rod to press the tissue, so that the other end of the double-headed needle pierces the tissue from the second needle insertion point;

[0057] Usage status 5, as shown Figure 17 As shown, at this time, the other end of the double-ended needle has passed through the second needle exit point and entered the sliding channel of the rear inner core area through the needle hole. At this time, by turning the knob, the pressing block at the rear end of the connecting rod presses the needle clip, the compression spring retracts, and the needle clip protrusion at the rear end of the needle clip engages with the needle clip groove of the double-ended needle.

[0058] Usage status 6, as shown Figure 18 As shown, after the pin-clamping protrusion at the rear end of the pin clamping plate engages with the pin-clamping groove of the double-ended needle, pushing the pressing rod again causes the pressing rod to disengage the closed inner core from the tissue, and simultaneously disengage the double-ended needle from the tissue.

[0059] Usage status 7, as shown Figure 19As shown, at this point, the entire invention has detached from the tissue, and the sutures have passed through both ends of the tissue.

[0060] Usage status 8, as shown Figure 20 As shown, at this point, the two ends of the tissue can be sutured by pulling on both ends of the suture, and the surgery is complete.

[0061] Although this utility model has been illustrated and described using specific embodiments and alternative methods, it should be understood that various changes and modifications are permitted as long as they do not depart from the spirit and scope of this utility model. Therefore, it should be understood that this utility model is not limited in any sense except by the appended claims and their equivalents.

Claims

1. A fascia closure device based on double-headed needle with thread, characterized in that: It includes a closed outer tube (11), a closed inner core (12), a pressing rod (13), and a double-ended needle (14); the double-ended needle (14) includes a needle tube (141) and needle tips (142) formed at both ends of the needle tube (141). A threading hole (143) is provided in the middle of the needle tube (141), and needle retaining grooves (144) are provided on both sides of the needle tube (141) near the needle tips (142). The closed outer tube (11) includes an inner core connecting tube section (111) and a locking needle tube section (112). The closed inner core (12) is slidably connected inside the inner core connecting tube section (111). The locking needle tube section (112) is connected to the rear end of the inner core connecting tube section (111). The locking needle tube section (112) is provided with a surgical tissue accommodating area, and a locking needle silicone (112A) is installed inside the locking needle tube section (112). The closed inner core (12) is provided with a locking pin structure, which includes a sliding channel (121) provided in the closed inner core (12), a locking pin piece (122) provided in the sliding channel (121), and a pin hole (123) provided at the rear end of the closed inner core (12). The pin hole (123) communicates with the sliding channel (121). The sliding channel (121) is provided with a recessed area (124). The rear end of the recessed area (124) communicates with the pin hole (123). A connecting groove (124A) is formed on the front sidewall of the recessed area (124). The locking pin piece (122) 2) The front end is installed in the connecting groove (124A); the rear end of the pin clip (122) is provided with a pin clip protrusion (122A), which cooperates with the pin clip groove (144) of the double-ended pin (14); the recessed area (124) is equipped with a compression spring (127), which abuts against the lower side of the pin clip (122); the compression spring (127) can push the pin clip (122) upward, so that the pin clip protrusion (122A) of the pin clip (122) moves away from the pin clip groove (144) of the double-ended pin (14); The rear end of the pressing rod (13) is connected to the closed inner core (12); a knob (131) that can slide back and forth is installed on the pressing rod (13); a connecting rod (15) is connected to the rear end of the knob (131), and the connecting rod (15) can slide into the sliding channel (121) of the closed inner core (12); the rear end of the connecting rod (15) is provided with a pressing block (151) that abuts against the upper side of the pin clip (122); the pressing block (151) can press the pin clip (122) downward, so that the pin clip protrusion (122A) of the pin clip (122) moves toward the pin clip groove (144) of the double-headed needle (14).

2. The fascia closure device based on double-headed needle with thread transmission according to claim 1, characterized in that: The surgical tissue accommodating area is a groove (112B) provided on the lower side wall of the needle tube segment (112); so that the rear end of the needle tube segment (112) forms a downward protruding protrusion (112C). The front sidewall of the protrusion (112C) has a mounting groove for installing the locking pin silicone (112A).

3. A fascia closure device based on double-headed needle with thread transmission according to claim 1, characterized in that: The front part of the pressing rod (13) is provided with a first sliding track extending in the front-back direction, and the two side walls of the first sliding track are provided with sliding grooves (132); the knob (131) is located in the first sliding track, and the knob (131) is equipped with a pin that cooperates with the sliding groove (132).

4. A fascia closure device based on double-headed needle with thread transmission according to claim 3, characterized in that: The connecting rod (15) includes a first connecting rod (152) connected to the toggle switch (131) and a second connecting rod (153) connected to the rear end of the first connecting rod (152); the second connecting rod (153) extends into the sliding channel (121) of the closed inner core (12).

5. A fascia closure device based on double-headed needle with thread transmission according to claim 4, characterized in that: The pressing rod (13) is divided into a front rod (133) and a rear rod (134). The rear rod (134) is connected to the closed inner core (12). The diameter of the front rod (133) is larger than that of the rear rod (134). The upper side wall of the front rod (133) is provided with a first groove (133A) that cooperates with the first connecting rod (152). The closed inner core (12) is divided into a front inner core section (125) and a rear inner core section (126), and the rear rod (134) is connected to the front inner core section (125). The upper side wall of the front inner core section (125) is provided with a second sliding groove (125A) that cooperates with the first connecting rod (152). The interior of the rear inner core section (126) forms a sliding channel (121), and the upper side wall of the rear inner core section (126) is provided with a recessed groove (126A) leading to the sliding channel (121). The second connecting rod (153) extends into the sliding channel (121) through the recessed groove (126A). The extrusion block (151) is located at the rear end of the second connecting rod (153).

6. A fascia closure device based on double-headed needle with thread transmission according to claim 5, characterized in that: It also includes a fixing seat (16), which includes a limiting tube (161) and a guide strip (162); the rear rod (134) of the pressing rod (13) extends out of the limiting tube (161) and is connected to the front inner core section (125), and the rear end of the front rod (133) abuts against the front end of the limiting tube (161); the guide strip (162) is connected to the lower side wall of the rear end of the limiting tube (161) and extends rearward, so that the guide strip (162) is attached to the outside of the front rod (133); A limiting tenon (162A) is installed inside the guide strip (162); The inner core connecting pipe section (111) has a through-hole (111A) on its pipe wall; a limiting tenon (162A) is installed in the opening of the through-hole (111A); so that the guide strip (162) is firmly attached to the opening of the through-hole (111A).

7. A fascia closure device based on double-headed needle with thread transmission according to claim 5, characterized in that: The rear inner core section (126) is also provided with a cover plate (17), which can be installed on the rear inner core section (126) to cover the sliding channel (121).

8. A fascia closure device based on double-headed needle with thread transmission according to claim 1, characterized in that: The needle tube (141) at the threading hole (143) has a visible groove on its outer wall.

9. A fascia closure device based on double-headed needle with thread transmission according to claim 1, characterized in that: The locking pin silicone (112A) is provided with a locking pin groove for gripping the double-headed pin (14), and a locking block is provided in the locking pin groove to cooperate with the pin-locking groove (144) of the double-headed pin (14).

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