Punching and suturing device

Abstract

The invention discloses a puncture suture device which comprises a puncture needle, a limiting seat, a push rod and a protective sleeve. A guide hole matched with the tip of the puncture needle and a limiting platform for limiting the limit position of the tip of the puncture needle are arranged in the limiting seat, at least part of a needle body of the puncture needle is movably arranged in the limiting seat, the puncture needle is hollow, a fixing anchor is movably arranged in the puncture needle, a suture is connected to the fixing anchor, and the suture is connected with the guide hole. The push rod can push the fixing anchor to move in the length direction of the puncture needle to push the fixing anchor out of the puncture needle. The protective sleeve is movably arranged on the puncture needle and the push rod; according to the scheme, the advancing path of the puncture needle can be solidified, the accuracy of the puncture position is guaranteed, and meanwhile, the whetstone table can effectively prevent the puncture needle from puncturing in-vivo tissue; the puncture needle is provided with the handle convenient to hold, operation is more convenient, the suture can be fixed to the tail end of the handle, and the fixing anchor is prevented from being disengaged from a puncture needle opening due to misoperation.

Description

Technical Field

[0001] The present invention relates to the technical field of puncture and suturing of various laparoscopic surgeries such as laparoscopy and thoracoscopy, and in particular to a puncture and suturing device. Background Art

[0002] In the field of laparoscopic minimally invasive surgery, puncture suturing is a key step in closing wounds after surgery. Especially with the popularization of surgical robot technology, clinical practice has placed higher requirements on puncture suturing devices with a hole diameter of less than 10mm. Existing technologies mainly achieve puncture closure through mechanical suturing instruments. For example, a design with a pre-set suture needle and a linkage mechanism (such as the solution described in CN 205697884 U) is used to drive the arc-shaped suture needle through the tissue layer to complete the suturing; or a deployable support frame structure (such as CN 208659435 U) is used to deploy a support component in the abdominal cavity to guide the suture out. However, this type of technology has significant drawbacks: First, the operating precision is insufficient. Due to the lack of a depth control mechanism, the puncture assembly cannot accurately limit the penetration depth when puncturing the body cavity (such as the two structures of CN 208659435 U). Excessive penetration can easily damage subperitoneal organs or blood vessels, increasing intraoperative risks. Second, the traditional mechanical structure has poor adaptability to small apertures. It is difficult to deploy in a puncture space smaller than 10 mm, resulting in needle positioning deviation (such as CN 205514732 U). This requires repeated adjustment of the puncture angle, prolonging the operation time and resulting in poor suturing effect. Third, the high cost and complexity of multi-component linkage mechanisms (such as the split suturing module in CN 106388889 A) rely on precision machining processes, driving up manufacturing costs and cumbersome assembly steps, hindering rapid clinical operation. This still fails to address the core contradiction between deep control and miniaturized integration, and increases system complexity.

[0003] Therefore, there is an urgent need to develop a new puncture suturing device that combines depth limiting protection, small aperture high compatibility and simplified operation to reduce the risk of tissue damage and improve the safety of minimally invasive surgery. Summary of the Invention

[0004] The purpose of the present invention is to provide a puncture suturing device to address the above-mentioned shortcomings, thereby solving the problems of poor suturing effect, complicated operation and high price of suturing devices in the prior art.

[0005] The present invention is achieved through the following solutions: A puncture suturing device comprises a puncture needle, a limiting seat, a push rod and a protective cover; the limiting seat is provided with a guide hole cooperating with the tip of the puncture needle and a limiting platform for limiting the extreme position of the tip of the puncture needle; at least part of the needle body of the puncture needle is movably arranged in the limiting seat; the puncture needle is hollow and a fixed anchor is movably arranged inside it; a suture is connected to the fixed anchor; the push rod can push the fixed anchor to move along the length direction of the puncture needle to push the fixed anchor out of the puncture needle; the protective cover is movably arranged between the puncture needle and the push rod.

[0006] Based on the structure of the above-mentioned puncture and suturing device, the puncture needle includes a needle body, a handle and a chuck. The front end of the needle body is arranged to protrude from the handle, and the rear end of the needle body is embedded in the center position of the handle; the front end of the needle body is provided with a sharp end, and a through groove is provided along the length direction of the needle body that passes through the needle body; the chuck is provided on the end of the handle away from the sharp end.

[0007] Based on the structure of the above-mentioned puncture and suturing device, the handle portion is designed as an ergonomic structure; and a slot is provided on the handle portion along the axial direction of the needle body portion.

[0008] Based on the structure of the above-mentioned puncture and suturing device, the chuck is a disc structure as a whole, and a wire clamping groove is provided at a circumferential position of the disc structure; Based on the structure of the above-mentioned puncture suture device, the fixing anchor is a long strip structure as a whole, and a connecting circular hole is provided in the middle position to cooperate with the suture. The two ends and sides of the fixing anchor are set as rounded corners, and the overall width of the fixing anchor is not greater than the size of the hollow cavity inside the needle body.

[0009] Based on the structure of the above-mentioned puncture and suturing device, the limit seat includes a contact head, a limit column and a circular handle; one end of the contact head is set in the limit column, and the other end protrudes out of the limit column, and the circular handle is set on the limit column away from the end of the contact head.

[0010] Based on the structure of the above-mentioned puncture and suturing device, the contact head includes a straight rod section and a curved section; the size of the straight rod section is not larger than the end size of the limiting column, so that a limiting platform with a stepped structure is formed between the outer wall of the straight rod section and the outer wall of the limiting column; a grinding needle platform is provided in the curved section, and the guide hole is obliquely provided between the limiting column and the straight rod section, and the exit direction of the guide hole is facing the grinding needle platform.

[0011] Based on the structure of the above-mentioned puncture and suturing device, the push rod includes a push platform, a rod structure and a stop boss; the rod structure is arranged at the center position of one end of the push platform, and the stop boss surrounds the rod structure and is arranged on the end surface of the push platform; the size of the rod structure is adapted to the size of the internal cavity structure of the puncture needle; Based on the structure of the above-mentioned puncture and suturing device, the protective cover includes a buckle portion, a main body portion and an anti-slip groove; the buckle portion is arranged on one side of the main body portion, and the anti-slip groove is arranged on the other side of the main body portion.

[0012] Based on the structure of the above-mentioned puncture and suturing device, the fixing anchor, push rod, and suture are all pre-set in the puncture needle tube body; the round tube of the puncture needle is made of metal, and the handle of the puncture needle is made of polymer material; the push rod is made of polymer material or metal material; the fixing anchor and suture are designed with absorbable and degradable materials.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. A puncture suture device in this scheme can solidify the travel path of the puncture needle through a limit seat with a guide channel and a needle sharpening platform to ensure the accuracy of the puncture position. At the same time, the needle sharpening platform can effectively prevent the puncture needle from piercing the internal tissue; the puncture needle has a handle that is easy to hold, making the operation more convenient, and the suture can be fixed at the end of the handle to prevent the fixed anchor from falling out of the puncture needle port due to misoperation; the push rod and the fixed anchor are pre-installed in the puncture needle to avoid redundant operations caused by bundling sutures, etc.; it is also equipped with a protective cover to fix the push rod to prevent the push rod from moving during transportation or transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the structure of an embodiment of the present invention; Figure 2 This is a schematic structural diagram of a puncture needle according to an embodiment of the present invention; Figure 3 This is a schematic structural diagram of a fixed anchor according to an embodiment of the present invention; Figure 4 This is a schematic structural diagram of a limit seat according to an embodiment of the present invention; Figure 5 Schematic diagram of the structure of a push rod according to an embodiment of the present invention; Figure 6 This is a schematic structural diagram of a protective cover according to an embodiment of the present invention; Figure 7 This is a schematic structural diagram of a suture insertion and fixation anchor according to an embodiment of the present invention; Figure 8 This is a schematic structural diagram of the assembly of a puncture needle, a push rod, a fixing anchor, and a suture according to an embodiment of the present invention; Figure 9 This is a structural diagram of the assembly of a puncture needle, a push rod, and a protective sleeve according to an embodiment of the present invention; Figure 10 Schematic diagram of the suturing process according to an embodiment of the present invention; Markings in the figure: 1. Puncture needle; 2. Limit seat; 3. Push rod; 4. Protective cover; 5. Fixed anchor; 6. Suture; 11. Needle body; 12. Handle; 13. Chuck; 14. Sharp end; 15. Through slot; 16. Wire clamping slot; 21. Guide hole; 22. Contact head; 23. Limit column; 24. Ring-shaped handle; 221. Straight rod section; 222. Curved section; 223. Needle sharpening platform; 234. Limit platform; 31. Push platform; 32. Rod body structure; 33. Stop boss; 41. Buckle part; 42. Main body; 43. Anti-slip groove; 411. First buckle; 42. Second buckle; 43. Third buckle; 51. Connecting circular hole. DETAILED DESCRIPTION

[0015] All features disclosed in this specification, or all steps in the disclosed methods or processes, except mutually exclusive features and / or steps, can be combined in any manner.

[0016] Any feature disclosed in this specification (including any appended claims and abstract), unless otherwise stated, may be replaced by other equivalent or similar features. In other words, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0017] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a predetermined direction, be constructed and operated in a predetermined direction, and therefore cannot be understood as a limitation on the present invention.

[0018] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features being referred to. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of such features.

[0019] Example 1 like Figures 1 to 10 As shown, the present invention provides a technical solution: A puncture suturing device includes at least but is not limited to a puncture needle 1, a limiting seat 2, a push rod 3 and a protective cover 4; the limiting seat 2 is provided with a guide hole 21 cooperating with the tip of the puncture needle 1 and a limiting platform 234 for limiting the extreme position of the tip of the puncture needle 1; at least part of the needle body of the puncture needle 1 is movably arranged in the limiting seat 2; the puncture needle 1 is hollow, and a fixed anchor 5 is movably arranged inside it, and a suture 6 is connected to the fixed anchor 5; the push rod 3 can push the fixed anchor 5 to move along the length direction of the puncture needle 1 to push the fixed anchor 5 out of the puncture needle 1; the protective cover 4 is movably arranged between the puncture needle 1 and the push rod 3.

[0020] Based on the above structure, this solution guides and limits the puncture needle 1 through the limit seat 2. On the one hand, it can reduce the difficulty of use for the operator and enable the puncture needle 1 to puncture along the predetermined direction. On the other hand, by setting the limit platform 234, the extreme position of the puncture needle 1 is limited, which can avoid excessive penetration and damage to subperitoneal organs or blood vessels, and reduce intraoperative risks. At the same time, a fixing anchor 5 and a suture 6 are set in this solution. When the fixing anchor 5 is pushed to the subcutaneous tissue by the push rod 3, the suture 6 remains on the body surface. After pushing the fixing anchor 5 into both sides of the puncture hole, the sutures 6 on both sides are pulled to tighten the fixing anchors 5 on both sides, and the sutures 6 are knotted to close the puncture hole. In this way, the puncture hole can be closed efficiently, simply and safely. In this solution, the protective cover 4 is used to fix the relative position of the push rod 3 and the puncture needle 1 to avoid the fixing anchor 5 being pushed by the push rod 3 in advance, thereby affecting the use of the device.

[0021] As an example, the puncture needle 1 may include a needle body 11, a handle 12 and a chuck 13, the front end of the needle body 11 protrudes from the handle 12, and the rear end of the needle body 11 is embedded in the center position of the handle 12; a sharp end 14 is provided at the front end of the needle body 11, and a through groove 15 is provided along the length direction of the needle body 11 to pass through the needle body 11; the chuck 13 is provided on the end of the handle 12 away from the sharp end 14.

[0022] The handle portion 12 is designed as an ergonomic structure; a slot is provided on the handle portion 12 along the axial direction of the needle body portion 11 .

[0023] The chuck 13 is a disc structure as a whole, and a wire clamping groove 16 is provided at a circumferential position of the disc structure; Based on the above structure, the puncture needle 1 is designed as a centrally controlled circular tube structure, and the tip end for puncturing the tissue is designed with a sharp angle of less than 30 degrees to ensure that the tissue can be penetrated smoothly; the tube wall of the puncture needle 1 is designed with an axial through groove 15, which is used to place the suture 6 and lead it to the tail position of the handle part 12 and fixed with the chuck 13, to avoid the push rod 3 from interfering with the suture 6 when the push rod 3 pushes out the fixed anchor 5, causing damage to the suture 6, and then causing the risk of suture 6 breaking; the handle part 12 of the puncture needle 1 is designed as an ergonomic structure with an anti-slip groove 43, which is convenient for hand holding and puncture; a chuck 13 is provided at the tail, and the chuck 13 is a circular grooved structure. After the suture 6 is led out from the through groove 15, it can be conveniently wound and fixed in the chuck 13.

[0024] As an example, the fixing anchor 5 is a long strip structure as a whole, with a connecting circular hole 51 in the middle that cooperates with the suture 6. The two ends and sides of the fixing anchor 5 are set as rounded corners, and the overall width of the fixing anchor 5 is not greater than the size of the hollow cavity inside the needle body 11.

[0025] Based on the above structure, a connecting circular hole 51 is provided on the fixing anchor 5, which is convenient for connecting and fixing with the suture 6. At the same time, the two ends and sides of the fixing anchor 5 are set to be rounded corners, which can avoid damage to the tissue when pulling to close the incision. The special size setting of the fixing anchor 5 can enable it to be smoothly pushed in the needle body 11.

[0026] As an example, the limit seat 2 may include a contact head 22, a limit column 23, and a circular handle 24; one end of the contact head 22 is disposed in the limit column 23, and the other end protrudes from the limit column 23, and the circular handle is disposed on the limit column 23 away from the end of the contact head 22; The contact head 22 may include a straight rod section 221 and a curved section 222; the size of the straight rod section 221 is not larger than the end size of the limiting column 23, so that a limiting platform 234 with a stepped structure is formed between the outer wall of the straight rod section 221 and the outer wall of the limiting column 23; a grinding needle platform 223 is provided in the curved section 222, and the guide hole 21 is obliquely provided between the limiting column 23 and the straight rod section 221, and the exit direction of the guide hole 21 is directly facing the grinding needle platform 223.

[0027] Based on the above structure, the limit seat 2 is designed as an anisotropic structure, which has an arc-shaped guide tip, which is convenient for inserting into the puncture hole and avoiding puncturing tissues and organs in the abdominal cavity; a sharpening platform 223 is provided in the curved section 222 to block the movement of the tip of the puncture needle 1 to prevent the tip of the puncture needle 1 from puncturing tissues and organs; a limiting platform 234 is also provided on the limit seat 2 to control the depth of the guide tip entering the human body to avoid damaging tissues and organs. When the contact head 22 is inserted into the puncture hole, due to the existence of the limiting platform 234, the penetration depth can be kept consistent each time; at the same time, a guide channel is provided inside it to facilitate guiding and positioning of the puncture needle 1 during puncture; and a circular handle 24 is provided at the same time for the user to hold it.

[0028] As an example, the push rod 3 may include a push platform 31, a rod structure 32, and a stop boss 33; the rod structure 32 is arranged at the center of one end of the push platform 31, and the stop boss 33 surrounds the rod structure 32 and is arranged on the end surface of the push platform 31; the size of the rod structure 32 is adapted to the size of the internal cavity structure of the puncture needle 1; Preferably, the push platform 31 can be a cylindrical structure, and the rod structure 32 can be a long thin rod structure.

[0029] Based on the above structure, in this solution, a push platform 31 is provided at the tail of the push rod 3 to facilitate pushing and pulling operations; a stop boss 33 is provided on the push platform 31 to prevent the push platform 31 from contacting the chuck 13, causing the suture 6 to be pressed and unable to move freely; the push rod 3 and the puncture needle 1 are clearance-fitted and can move freely axially within the circular tube of the puncture needle 1.

[0030] As an example, the protective cover 4 may include a buckle portion 41, a main body portion 42, and an anti-slip groove 43; the buckle portion 41 is provided on one side of the main body portion 42, and the anti-slip groove 43 is provided on the other side of the main body portion 42; Based on the above structure, in this solution, the puncture needle 1 and the push rod 3 are locked in place through the buckle part 41 to prevent the push rod from malfunctioning. At the same time, the protective groove can increase the friction force of taking the main body 42, which is convenient for later use.

[0031] As an example, the buckle portion 41 may include a first buckle 411, a second buckle 42 and a third buckle 43; the size of the first buckle 411 is adapted to the size of the push platform 31, the size of the second buckle 42 is adapted to the size of the rod structure 32; the size of the third buckle 43 is adapted to the size of the smallest position in the handle portion 12.

[0032] Based on the above structure, the push platform 31 is locked by the first buckle 411, while the rod structure 32 is locked by the second buckle 42, and the handle part 12 is locked by the third buckle 43. The puncture needle 1 and the push rod 3 are fixed by the three buckles to prevent relative displacement, which is convenient for later use.

[0033] As an example, the fixing anchor 5 , the push rod 3 , and the suture 6 are all pre-set in the tube body of the puncture needle 1 .

[0034] The round tube of the puncture needle 1 is made of metal, and the handle of the puncture needle 1 is made of polymer material; the push rod 3 is made of polymer material or metal material; the fixing anchor 5 is designed from absorbable and degradable material; and the suture 6 is designed from absorbable and degradable material.

[0035] The handle 12 of the puncture needle 1 has a groove that mates with the through groove 15 in the circular tube wall of the puncture needle 1, thereby protecting the suture 6 during the pushing process. After the suture 6 is connected to the anchor 5, the tail end of the suture 6 can extend out of the puncture needle 1 and be tied to the tail end of the handle of the puncture needle 1. The suture 6 can be single-strand or multi-strand braided.

[0036] The method of using this solution is as follows: when performing a suturing operation, first insert the limiting seat 2 into the puncture hole until the limiting platform 234 is against the skin, then remove the protective cover 4, use the puncture needle 1 to insert along the guide channel, penetrate the abdominal wall tissue and reach the sharpening platform 223, then remove the suture 6 fixed on the chuck 13, push the push rod 3 to push the fixing anchor 5 out of the circular tube of the puncture needle 1, and pull out the puncture needle 1 and the push rod 3 as a whole, thus completing the operation of placing the fixing anchor 5 once; similarly, place another fixing anchor 5 on the opposite abdominal wall. After the two fixing anchors 5 are placed, remove the limiting seat 2, pull the sutures 6 on both sides to tighten the fixing anchors 5 on both sides, and tie the sutures 6 to close the puncture hole.

[0037] Figure 10 (a) is a schematic diagram of removing the protective cover 4 when the puncture needle 1 is inserted into the guide hole 21; Figure 10 Middle (b) is a schematic diagram of the push rod 3 pushing the anchor 5 into the subcutaneous tissue; Figure 10 Middle (c) is a schematic diagram of closing the puncture hole by fixing anchors 5 on both sides.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A puncture and suturing device, characterized in that: The invention comprises a puncture needle (1), a limiting seat (2), a push rod (3) and a protective cover (4); the limiting seat (2) is provided with a guide hole (21) cooperating with the tip of the puncture needle (1) and a limiting platform (234) for limiting the extreme position of the tip of the puncture needle (1); at least part of the needle body of the puncture needle (1) is movably arranged in the limiting seat (2); the puncture needle (1) is hollow, and a fixed anchor (5) is movably arranged inside the puncture needle (1); a suture (6) is connected to the fixed anchor (5); the push rod (3) can push the fixed anchor (5) to move along the length direction of the puncture needle (1) to push the fixed anchor (5) out of the puncture needle (1); the protective cover (4) is movably arranged between the puncture needle (1) and the push rod (3).

2. The puncture and suturing device according to claim 1, characterized in that: The puncture needle (1) comprises a needle body (11), a handle (12) and a chuck (13); the front end of the needle body (11) protrudes from the handle (12), and the rear end of the needle body (11) is embedded in the center of the handle (12); the front end of the needle body (11) is provided with a sharp end (14), and a through groove (15) penetrating the needle body (11) is provided along the length direction of the needle body (11); the chuck (13) is provided on the end of the handle (12) away from the sharp end (14).

3. The puncture and suturing device according to claim 2, characterized in that: The handle portion (12) is designed as an ergonomic structure; the handle portion (12) is provided with a slot along the axial direction of the needle body portion (11).

4. A puncture and suturing device according to claim 2 or 3, characterized in that: The chuck (13) is a disc structure as a whole, and a wire clamping groove (16) is provided at a circumferential position of the disc structure.

5. The puncture and suturing device according to any one of claims 1 to 3, characterized in that: The fixing anchor (5) is a long strip structure as a whole, and a connecting circular hole (51) is provided in the middle thereof for cooperating with the suture (6). Both ends and sides of the fixing anchor (5) are provided with rounded corners, and the overall width of the fixing anchor (5) is not greater than the size of the hollow cavity inside the needle body (11).

6. The puncture and suturing device according to any one of claims 1 to 3, characterized in that: The limiting seat (2) comprises a contact head (22), a limiting column (23) and a circular ring handle (24); one end of the contact head (22) is arranged in the limiting column (23), and the other end protrudes from the limiting column (23); the circular ring handle is arranged on the limiting column (23) at an end away from the contact head (22).

7. The puncture and suturing device according to claim 6, characterized in that: The contact head (22) comprises a straight rod section (221) and a curved section (222); the size of the straight rod section (221) is not larger than the size of the end of the limiting column (23), so that a limiting platform (234) with a stepped structure is formed between the outer side wall of the straight rod section (221) and the outer side wall of the limiting column (23); a grinding needle platform (223) is provided in the curved section (222), the guide hole (21) is obliquely provided between the limiting column (23) and the straight rod section (221), and the exit direction of the guide hole (21) is provided facing the grinding needle platform (223).

8. The puncture and suturing device according to any one of claims 1 to 3, characterized in that: The push rod (3) comprises a push platform (31), a rod structure (32) and a stop boss (33); the rod structure (32) is arranged at the center position of one end of the push platform (31), and the stop boss (33) surrounds the rod structure (32) and is arranged on the end surface of the push platform (31); the size of the rod structure (32) is adapted to the size of the internal cavity structure of the puncture needle (1).

9. The puncture and suturing device according to any one of claims 1 to 3, characterized in that: The protective cover (4) comprises a buckle portion (41), a main body portion (42) and an anti-slip groove (43); the buckle portion (41) is provided on one side of the main body portion (42), and the anti-slip groove (43) is provided on the other side of the main body portion (42).

10. The puncture and suturing device according to any one of claims 1 to 3, characterized in that: The fixing anchor (5), the push rod (3), and the suture (6) are all pre-installed in the tube of the puncture needle (1); the round tube of the puncture needle (1) is made of metal, and the handle of the puncture needle (1) is made of a polymer material; the push rod (3) is made of a polymer material or a metal material; and the fixing anchor (5) and the suture (6) are designed as absorbable and degradable materials.

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