Suture knot pusher anti-backout hub

Abstract

The present application belongs to the technical field of surgical instruments, in particular to a suture knotting and anti-dropping wire collector, which comprises a holding handle, one end of the holding handle is fixed with a connecting rod, one end of the connecting rod away from the holding handle is provided with a wire leading window, a suture is arranged in the wire leading window, a knotting assembly for knotting the suture and a cutting assembly for cutting the suture are arranged in the holding handle, and a barb assembly for cutting a barb structure on the suture is arranged in the connecting rod. The present application can process a micro, one-way and biocompatible barb structure at the end of the newly generated suture tail while achieving accurate cutting, and the barb structure is sufficient to resist the sliding trend under the arterial pulsation, without increasing the risk of tissue damage and thrombosis.

Description

Technical Field

[0001] This invention belongs to the field of surgical instrument technology, specifically a suture knot pusher and anti-loosening suture collector. Background Technology

[0002] In the current field of interventional surgery, femoral artery or femoral vein puncture has become a routine approach for interventional treatment of cardiovascular, cerebrovascular, peripheral vascular, and tumor diseases. Puncture point suturing is a fundamental and crucial procedure, as its reliability directly affects the quality of puncture site healing and the risk of postoperative complications. To improve suture stability, knot fixation is often used clinically. Currently, slip knot suture devices are increasingly popular in patients with high bleeding risk or those requiring long-term anticoagulation due to their advantages such as absorbability, no foreign body residue, and compatibility with re-puncture. A pre-placed slip knot is inserted into the lateral aspect of the vessel wall via a catheter, and tightening the knot achieves mechanical closure of the vascular rupture.

[0003] However, the above-mentioned technique has a long-overlooked but crucial hidden danger: when the surgeon uses the matching suture cutter to remove the excess suture, the newly generated suture tail loses its anchoring structure. Under the influence of arterial pulsation, blood pressure fluctuations, and antiplatelet effects, the slipped knot may retract due to insufficient friction, leading to a decrease in suture tension or even complete failure.

[0004] To improve stability, surgeons often take measures such as extending the compression time, increasing the number of sutures, or manually reinforcing the knots. However, these methods all have various limitations and constraints. For example, the operating space is limited in small superficial blood vessels such as the radial artery, making it difficult to implement, or they prolong the operation time, increase patient discomfort and radiation exposure, and at the same time violate the original design intention of slip knot sutures to be "fast, simple, and knotless". Summary of the Invention

[0005] To address the problems mentioned above in the background art, the present invention provides a suture push-knot anti-loosening suture gatherer. The present invention can, while completing precise cutting, process a miniature, unidirectional, biocompatible barb structure at the end of the newly generated suture tail. This barb structure is sufficient to resist the slippage tendency under arterial pulsation without increasing tissue damage and thrombosis risk.

[0006] This invention provides a suture knot pusher and anti-loosening suture gatherer, including a grip handle, a connecting rod fixed to one end of the grip handle, a suture guide window opened at the end of the connecting rod away from the grip handle, a suture thread passing through the suture guide window, a knot pusher component for pushing the suture knot and a cutting component for cutting the suture thread inside the grip handle, and a barb component for cutting barb structures on the suture thread inside the connecting rod.

[0007] Furthermore, the push-joint assembly includes a push rod passing through the grip handle and the connecting rod. The push rod slides along the length of the grip handle and the connecting rod. A wire groove is formed at the end of the push rod near the lead wire window. A sliding block is fixedly connected to the push rod. The sliding block is slidably connected to the grip handle. The sliding block is partially located outside the grip handle. Two limiting plates are fixed inside the grip handle. The sliding block is located between the two limiting plates. The push rod passes through the two limiting plates. The limiting plate closer to the connecting rod is the first limiting plate, and the limiting plate farther from the connecting rod is the second limiting plate. A first return spring is provided between the push rod and the second limiting plate. The sliding block abuts against the first limiting plate under the elastic action of the first return spring.

[0008] Furthermore, the opening direction of the groove is opposite to the opening direction of the lead window. The suture thread passes through the groove and the lead window. The two ports of the groove are connected to the two ports of the lead window to allow the suture thread to enter and exit. The suture thread is clamped between the top rod and the connecting rod for push-knotting.

[0009] Furthermore, limiting rods are fixedly connected to both sides of the top rod, and the limiting rods are located between the first limiting plate and the second limiting plate. A limiting groove is provided inside the grip handle, and the limiting rod is slidably disposed in the limiting groove.

[0010] Furthermore, the cutting assembly includes a cutting blade that passes through the grip handle and the connecting rod. The cutting blade slides along the length of the grip handle and the connecting rod. The cutting blade is a hollow tube. The top rod passes through the interior of the cutting blade. The end of the cutting blade near the suture line is sharpened. The end of the cutting blade away from the suture line is fixed to a base. A second return spring is provided between the base and the inner wall of the grip handle. A cutting blade handle is rotatably connected to the grip handle. The middle position of the cutting blade handle rotates on the grip handle. One end of the cutting blade handle extends out of the grip handle, and the other end of the cutting blade handle abuts against the base. Under the elastic action of the second return spring, the base pushes the cutting blade handle against the first limiting plate.

[0011] Furthermore, the barb assembly includes a blade spring, which is fixed to the inner wall of the connecting rod with its blade facing the suture line. A fixing block is also fixed to the inner wall of the connecting rod, and the fixing block has an inclined surface on the side near the blade spring. A top block is fixed to the end of the cutter near the suture line. When the cutter moves toward the suture line, it drives the top block to move. The top block pushes the blade spring to contact the inclined surface of the fixing block. Guided by the inclined surface of the fixing block, the blade spring moves toward the suture line and cuts a barb structure on the suture line.

[0012] Furthermore, the blade spring is provided with two blades to cut out two barbed structures.

[0013] Furthermore, the grip handle includes two housings that snap together, and a retaining ring is fitted onto each of the two housings.

[0014] Furthermore, one of the outer shells is fixed with multiple insertion rods, and the other outer shell is provided with multiple insertion holes. The insertion rods are arranged in a one-to-one correspondence with the insertion holes, and the insertion rods are inserted into the insertion holes. The end of the outer shell near the connecting rod is provided with a mounting groove, and the fixing ring is fastened to the mounting groove to fix the two outer shells.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] (1) The present invention can process a miniature, unidirectional, biocompatible barb structure at the end of the newly generated suture while completing the precise cutting of the suture end. The barb structure is sufficient to resist the slippage tendency under arterial pulsation without increasing tissue damage and thrombosis risk.

[0017] (2) While the cutting blade cuts the suture, the cutting blade drives the top block to move towards the blade spring. The top block pushes the blade spring to contact the inclined surface of the fixed block. Under the guidance of the inclined surface of the fixed block, the moving direction of the blade spring is changed. The blade spring moves towards the suture and cuts out the barb structure on the suture, thereby completing the cutting of the barb structure of the suture and effectively reducing the risk of the suture slipping off.

[0018] (3) The two outer shells are fastened together by insert rods and holes, and then the two outer shells are fixed by fixing rings, which facilitates the disassembly and assembly of the handle and facilitates later maintenance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the hub;

[0021] Figure 2 This is a schematic diagram of the internal structure of the grip handle;

[0022] Figure 3 A schematic diagram of the disassembled structure of the grip handle;

[0023] Figure 4 This is a schematic diagram of the structure at the end of the connecting rod;

[0024] Figure 5 This is a sectional view of the inside of the connecting rod;

[0025] Figure 6 This is a schematic diagram of the barb assembly before it is cut.

[0026] Figure 7 This is a schematic diagram of the structure during the cutting of the barb assembly;

[0027] Figure 8 This is a diagram showing the state of the sutures after they have been cut.

[0028] Explanation of reference numerals in the attached drawings: 1. Handle; 10. Outer shell; 11. Fixing ring; 12. Insert rod; 13. Insertion hole; 14. Mounting groove; 2. Connecting rod; 20. Lead wire window; 3. Sewing thread; 4. Push knot assembly; 40. Top rod; 41. Thread groove; 42. Sliding block; 43. First limiting plate; 44. Second limiting plate; 45. First return spring; 46. Limiting rod; 47. Limiting groove; 5. Cutting assembly; 50. Cutting blade; 51. Base; 52. Second return spring; 53. Cutting blade handle; 6. Barb assembly; 60. Blade spring; 61. Fixing block; 62. Top block. Detailed Implementation

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0030] The following is in conjunction with the appendix Figure 1 To be continued Figure 8 The invention is described in detail with specific embodiments.

[0031] Reference Figures 1-8 The present invention provides a suture push-knot anti-loosening suture collector, including a grip handle 1, a connecting rod 2 fixed to one end of the grip handle 1, a suture window 20 opened at the end of the connecting rod 2 away from the grip handle 1, a suture 3 passing through the suture window 20, a push-knot component 4 for pushing the suture 3 and a cutting component 5 for cutting the suture 3 are provided in the grip handle 1, and a barb component 6 for cutting barb structures on the suture 3 is provided in the connecting rod 2.

[0032] The push-joint assembly 4 includes a push rod 40 that passes through the handle 1 and the connecting rod 2. The push rod 40 slides along the length of the handle 1 and the connecting rod 2. A wire groove 41 is provided at the end of the push rod 40 near the lead wire window 20. A sliding block 42 is fixedly connected to the push rod 40. The sliding block 42 is slidably connected to the handle 1. Part of the sliding block 42 is located outside the handle 1. Two limiting plates are fixed inside the handle 1. The sliding block 42 is located between the two limiting plates. The push rod 40 passes through the two limiting plates. The limiting plate near the connecting rod 2 is the first limiting plate 43, and the limiting plate away from the connecting rod 2 is the second limiting plate 44. A first return spring 45 is provided between the push rod 40 and the second limiting plate 44. The sliding block 42 abuts against the first limiting plate 43 under the elastic action of the first return spring 45.

[0033] The opening direction of the wire groove 41 is opposite to the opening direction of the lead wire window 20. The suture 3 is passed through the wire groove 41 and the lead wire window 20. The two ends of the wire groove 41 are connected to the two ends of the lead wire window 20 so that the suture 3 can pass in and out. The suture 3 is sandwiched between the top rod 40 and the connecting rod 2 for push knot.

[0034] When performing the push knot, first push the sliding block 42. The sliding block 42 drives the top rod 40 to move closer to the first return spring 45. At this time, the top rod 40 compresses the first return spring 45. At the same time, the top rod 40 drives the wire groove 41 to move into the interior of the connecting rod 2, so that the lead window 20 is opened. Then, the axis of the suture 3 is inserted into the lead window 20. Then, release the sliding block 42. Under the elastic action of the first return spring 45, the top rod 40 moves away from the first return spring 45. After the top rod 40 returns to its original position, it fixes the suture 3 in the wire groove 41. Therefore, the suture 3 is clamped between the top rod 40 and the connecting rod 2. Then, hold the axis of the suture 3 with one hand, and hold the handle 1 with the other hand. Slowly push the connecting rod 2 to the puncture point closure position to complete the tightening of the slip knot of the suture 3.

[0035] Limiting rods 46 are fixedly connected to both sides of the push rod 40. The limiting rods 46 are located between the first limiting plate 43 and the second limiting plate 44. A limiting groove 47 is provided inside the grip handle 1, and the limiting rods 46 are slidably disposed in the limiting grooves 47. When the push rod 40 moves, the push rod 40 drives the limiting rods 46 to slide in the limiting grooves 47. The setting of the limiting rods 46 and the limiting grooves 47 can limit the movement path of the push rod 40, thereby improving the movement stability of the push rod 40.

[0036] The cutting assembly 5 includes a cutting blade 50 that passes through the handle 1 and the connecting rod 2. The cutting blade 50 slides along the length of the handle 1 and the connecting rod 2. The cutting blade 50 is a hollow tube. A top rod 40 passes through the inside of the cutting blade 50. The end of the cutting blade 50 near the suture line 3 is sharpened. The end of the cutting blade 50 away from the suture line 3 is fixed with a base 51. A second return spring 52 is provided between the base 51 and the inner wall of the handle 1. A cutting handle 53 is rotatably connected to the handle 1. The middle position of the cutting handle 53 is rotated on the handle 1. One end of the cutting handle 53 extends out of the handle 1, and the other end of the cutting handle 53 abuts against the base 51. Under the elastic action of the second return spring 52, the base 51 pushes the cutting handle 53 against the first limiting plate 43.

[0037] After the knot is tied, pull the end of the cutter handle 53 located outside the grip handle 1. The cutter handle 53 rotates, and the other end of the cutter handle 53 pushes the base 51 to move. At this time, the base 51 compresses the second return spring 52. The base 51 also pushes the cutter 50 to move closer to the suture line 3. The cutter 50 squeezes and cuts the suture line 3 against the side wall of the lead window 20, thereby completing the cutting of the end of the suture line 3.

[0038] The barb assembly 6 includes a blade spring 60, which is fixed to the inner wall of the connecting rod 2. The blade of the blade spring 60 faces the suture line 3. A fixing block 61 is also fixed to the inner wall of the connecting rod 2. The fixing block 61 has an inclined surface on the side near the blade spring 60. A top block 62 is fixed to the end of the cutter near the suture line 3. When the cutter moves towards the suture line 3, it drives the top block 62 to move. The top block 62 pushes the blade spring 60 to contact the inclined surface of the fixing block 61. Guided by the inclined surface of the fixing block 61, the blade spring 60 moves towards the suture line 3 and cuts a barb structure on the suture line 3. The blade spring 60 has two blades to cut two barb structures, further reducing the risk of slippage and detachment of the suture line 3.

[0039] While the cutting blade 50 cuts the suture 3, the cutting blade 50 drives the top block 62 to move closer to the blade spring 60. The top block 62 pushes the blade spring 60 to contact the inclined surface of the fixing block 61. Under the guidance of the inclined surface of the fixing block 61, the moving direction of the blade spring 60 is changed. The blade spring 60 moves closer to the suture 3 and cuts a barb structure on the suture 3, thereby completing the cutting of the barb structure of the suture 3 and effectively reducing the risk of the suture 3 slipping and falling off.

[0040] The grip handle 1 includes two interlocking outer shells 10, each fitted with a retaining ring 11. One outer shell 10 has multiple insert rods 12 fixed to it, while the other outer shell 10 has multiple insertion holes 13. The insert rods 12 correspond one-to-one with the insertion holes 13, and are inserted into the holes 13. One end of each outer shell 10 near the connecting rod 2 has a mounting groove 14, and the retaining ring 11 fastens onto the mounting groove 14 to secure the two outer shells 10. The two outer shells 10 are interlocked via the insert rods 12 and insertion holes 13, and then secured by the retaining ring 11, facilitating the disassembly and assembly of the grip handle 1 and enabling future maintenance.

[0041] The implementation principle of the suture 3 push-knot anti-loosening suture collector provided by the present invention is as follows: In use, first push the sliding block 42, the sliding block 42 drives the top rod 40 to move towards the first return spring 45, the top rod 40 compresses the first return spring 45, and at the same time the top rod 40 drives the suture groove 41 to move into the interior of the connecting rod 2, so that the suture window 20 is opened. Then, the axis of the suture 3 is inserted into the suture window 20. Then, release the sliding block 42, the top rod 40 moves away from the first return spring 45 under the elastic action of the first return spring 45. After the top rod 40 returns to its original position, it fixes the suture 3 in the suture groove 41. Therefore, the suture 3 is clamped between the top rod 40 and the connecting rod 2. Then, hold the axis of the suture 3 with one hand, hold the handle 1 with the other hand, and slowly push the connecting rod 2 into the groove. At the point of puncture closure, the slip knot of suture 3 is tightened; after the push knot is completed, the end of the cutter handle 53 located outside the grip handle 1 is pulled, the cutter handle 53 rotates, and the other end of the cutter handle 53 pushes the base 51 to move. The base 51 compresses the second return spring 52, and the base 51 simultaneously pushes the cutter 50 to move closer to the suture 3. The cutter 50 squeezes and cuts the suture 3 against the side wall of the lead window 20; while the cutter 50 cuts the suture 3, the cutter 50 drives the top block 62 to move closer to the blade spring 60. The top block 62 pushes the blade spring 60 to contact the inclined surface of the fixing block 61. Under the guidance of the inclined surface of the fixing block 61, the moving direction of the blade spring 60 is changed, and the blade spring 60 moves closer to the suture 3 and cuts a barb structure on the suture 3. This invention can precisely cut the end of the suture 3 and process a miniature, unidirectional, biocompatible barb structure at the end of the newly generated suture tail. This barb structure is sufficient to resist the slippage tendency under arterial pulsation without increasing tissue damage and the risk of thrombosis.

[0042] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the nature and scope of the present invention. Various modifications made to the above embodiments by those skilled in the art after reading this specification are all within the scope of protection of the present invention.

Claims

1. A suture knot push-off and anti-loosening suture collector, characterized in that, The device includes a grip handle (1), one end of which is fixed with a connecting rod (2). The end of the connecting rod (2) away from the grip handle (1) is provided with a lead wire window (20). A suture thread (3) is threaded through the lead wire window (20). The grip handle (1) is provided with a push knot assembly (4) for pushing knots on the suture thread (3) and a cutting assembly (5) for cutting the suture thread (3). The connecting rod (2) is provided with a barb assembly (6) for cutting barb structures on the suture thread (3). The push-joint assembly (4) includes a push rod (40) passing through the grip handle (1) and the connecting rod (2). The push rod (40) slides along the length of the grip handle (1) and the connecting rod (2). A wire groove (41) is provided at one end of the push rod (40) near the lead wire window (20). A sliding block (42) is fixedly connected to the push rod (40). The sliding block (42) is slidably connected to the grip handle (1). Part of the sliding block (42) is located outside the grip handle (1). Two limiting plates are fixed inside the handle (1). The sliding block (42) is located between the two limiting plates. The top rod (40) passes through the two limiting plates. The limiting plate closer to the connecting rod (2) is the first limiting plate (43), and the limiting plate farther away from the connecting rod (2) is the second limiting plate (44). A first return spring (45) is provided between the top rod (40) and the second limiting plate (44). The sliding block (42) abuts against the first limiting plate (43) under the elastic action of the first return spring (45). The cutting assembly (5) includes a cutting blade (50) passing through the handle (1) and the connecting rod (2). The cutting blade (50) slides along the length of the handle (1) and the connecting rod (2). The cutting blade (50) is a hollow tube. The top rod (40) passes through the inside of the cutting blade (50). The end of the cutting blade (50) near the suture line (3) is sharpened. The end of the cutting blade (50) away from the suture line (3) is fixed with a base (51). The base (51) and... A second return spring (52) is provided between the inner walls of the grip handle (1). A cutter handle (53) is rotatably connected to the grip handle (1). The middle position of the cutter handle (53) rotates on the grip handle (1). One end of the cutter handle (53) extends out of the grip handle (1), and the other end of the cutter handle (53) abuts against the base (51). Under the elastic action of the second return spring (52), the base (51) pushes the cutter handle (53) against the first limiting plate (43). The barb assembly (6) includes a blade spring (60), which is fixed on the inner wall of the connecting rod (2). The blade of the blade spring (60) faces the suture line (3). A fixing block (61) is also fixed on the inner wall of the connecting rod (2). The fixing block (61) has an inclined surface on the side near the blade spring (60). A top block (62) is fixed on the end of the cutting blade (50) near the suture line (3). When the cutting blade (50) moves toward the suture line (3), it drives the top block (62) to move. The top block (62) pushes the blade spring (60) to contact the inclined surface of the fixing block (61). Under the guidance of the inclined surface of the fixing block (61), the blade spring (60) moves toward the suture line (3) and cuts a barb structure on the suture line (3).

2. The suture knot push-off and anti-loosening suture collector according to claim 1, characterized in that, The opening direction of the groove (41) is opposite to the opening direction of the lead window (20). The suture (3) passes through the groove (41) and the lead window (20). The two ports of the groove (41) are connected to the two ports of the lead window (20) so that the suture (3) can pass through and out. The suture (3) is sandwiched between the top rod (40) and the connecting rod (2) for push knot.

3. The suture knot push-off and anti-loosening suture collector according to claim 1, characterized in that, Limiting rods (46) are fixedly connected to both sides of the top rod (40). The limiting rods (46) are located between the first limiting plate (43) and the second limiting plate (44). The grip handle (1) is provided with a limiting groove (47) inside. The limiting rods (46) are slidably disposed in the limiting groove (47).

4. The suture knot push-off and anti-loosening suture collector according to claim 1, characterized in that, The blade spring (60) is provided with two blades to cut out two barbed structures.

5. The suture knot push-off and anti-loosening suture collector according to claim 1, characterized in that, The grip handle (1) includes two housings (10) that snap together, and a retaining ring (11) is fitted on the two housings (10).

6. The suture push-knot anti-loosening suture collector according to claim 5, characterized in that, One of the outer shells (10) is fixed with a plurality of insert rods (12), and the other outer shell (10) is provided with a plurality of insertion holes (13). The insert rods (12) are arranged in a one-to-one correspondence with the insertion holes (13), and the insert rods (12) are inserted into the insertion holes (13). The end of the outer shell (10) near the connecting rod (2) is provided with a mounting groove (14), and the fixing ring (11) is fastened to the mounting groove (14) to fix the two outer shells (10).

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