Soft tissue suturing device

Abstract

The application provides a soft tissue suturing device, which comprises a tubular puncture needle, a driving part, a limiting part and a push-out rod, a plurality of implanting parts are sequentially arranged in the front end of the puncture needle, and the rear end is arranged on the second end surface of the base; the driving part is provided with a closed ring-shaped driving groove with a plurality of bending sections, and a stop point is arranged at the connecting point between each bending section; one end of the limiting part is connected with the base outside the driving part away from the second end surface, and the other end is arranged at the initial stop point in the driving groove; the rear end of the push-out rod is fixedly connected with the driving part, and the front end is coaxially arranged in the puncture needle; when the driving part moves back and forth, the other end of the limiting part moves along the driving groove in the preset direction from the initial stop point and makes the driving part stop at each stop point in sequence, so that the push-out rod moves back and forth at different positions relative to the puncture needle to push out each implanting part from the puncture needle. The application can sequentially deploy the implanting parts, is simple to operate, can provide feedback and can be accurately operated.

Description

Technical Field

[0001] This invention relates to the field of soft tissue repair, and more particularly to a soft tissue suturing device. Background Technology

[0002] With societal development, the public has gradually realized the importance of exercise for physical health, and the types of exercise have become increasingly complex and diverse. This has also led to a rise in sports-related soft tissue injuries, including meniscus tears within the knee joint. Current meniscus repair surgery typically uses arthroscopic suturing instruments, such as a total internal meniscus suture device. These instruments usually consist of a needle for puncturing the soft tissue and at least two larger implants connected to sutures. Some existing technical systems have the following problems: 1. Implants are deployed by being driven by multiple driving components, each driving component individually pushing each implant, or each implant being pushed sequentially by a single driving component via a switch. As a result, the operation of the driving and puncture mechanisms in existing technologies is relatively complex, does not meet ergonomic requirements, cannot provide appropriate feedback, and may lead to operator misoperation; 2. Controlling the puncture depth by cutting a depth limiting section is cumbersome and irreversible, or controlling the puncture depth through other length adjustment mechanisms, bidirectional adjustment is prone to jamming, and the puncture depth cannot be accurately controlled; 3. In order to ensure a small puncture hole for fixing the implant, a thinner puncture needle is usually used, which has lower strength.

[0003] Therefore, it is necessary to provide a soft tissue suturing device that can smoothly deploy implants, accurately control puncture depth, and improve the strength of puncture needles, in order to solve the above-mentioned problems existing in the prior art. Summary of the Invention

[0004] The purpose of this invention is to overcome at least one of the above-mentioned defects in the prior art and to provide a soft tissue suturing device.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows:

[0006] This invention provides a soft tissue suturing device, comprising:

[0007] The base has a second end face;

[0008] The puncture mechanism includes a tubular puncture needle, in which multiple implantation parts are sequentially placed at the front end and the rear end extends beyond the base onto the second end face.

[0009] The driving mechanism includes a driving part, a limiting part, and an ejector rod. The driving part is slidably mounted on the base relative to the rear end of the puncture needle. The driving part has a closed annular driving groove. The driving groove has a plurality of alternating, end-to-end, equal-numbered advancing and retreating grooves. Adjacent advancing and retreating grooves form an angled stop at their connection point. Among the stop points is an initial stop point closest to the second end face. In a predetermined direction away from the initial stop point, the distance between all even-numbered stop points (including the initial stop point) and the second end face is less than the distance between adjacent odd-numbered stop points and the second end face. The distance between the stop point of the digital part and the second end face increases sequentially; one end of the limiting part is rotatably connected to the base on the side of the driving part away from the second end face, and the other end is placed in the driving groove; the rear end of the push rod is fixedly connected to the driving part, and the front end is coaxially inserted into the puncture needle from the rear end of the puncture needle. When the driving part moves back and forth relative to the second end face, the other end of the limiting part moves around the driving groove from the initial stop point along the preset direction, and stops the driving part at each stop point in sequence, driving the push rod to move back and forth in the puncture needle, and pushing each implanted part out of the puncture needle one by one.

[0010] Furthermore, a check structure is provided at the transition between adjacent propulsion grooves and retraction grooves. The check structure is located on the bottom surface of the drive groove after the corresponding stop point along a preset direction, so that the other end of the limiting part can only slide in the drive groove along the preset direction.

[0011] Furthermore, the front end of the puncture needle is provided with a puncture section, which is a straight tube that turns relative to the puncture needle, and each of the implantation parts is placed in the puncture section in sequence.

[0012] Furthermore, the driving mechanism also includes an elastic element. One end of the elastic element is connected to the base on the side of the driving part away from the second end face, and the other end is connected to the driving part. When the driving part is forced to move toward the second end face, the elastic element elastically stretches. When the force applied to the driving part is released, the elastic element elastically contracts, driving the driving part to move away from the second end face.

[0013] Furthermore, the elastic element includes a spring.

[0014] Furthermore, the drive slot is provided with two propulsion slots and two retraction slots. Adjacent propulsion slots and retraction slots form a stop point at their connection point that is less than a right angle. The two propulsion slots are respectively a first propulsion slot and a second propulsion slot, and the two retraction slots are respectively a first retraction slot and a second retraction slot. The connection point between the second retraction slot and the first propulsion slot forms an initial stop point located at an even-numbered position. The connection point between the first propulsion slot and the first retraction slot forms a first stop point located at an odd-numbered position. The connection point between the first retraction slot and the second propulsion slot forms a second stop point located at an even-numbered position. The third stop point is formed at the connection point of the second return groove, located at an odd-numbered position; the distance between the initial stop point and the second end face is less than the distance between each stop point and the second end face, the distance between the first stop point and the second end face is greater than the distance between the second stop point and the second end face, the distance between the second stop point and the second end face is less than the distance between the third stop point and the second end face, and the distance between the third stop point and the second end face is greater than the distance between the first stop point and the second end face; there are two implanted parts; the driving part is subjected to force. When moving towards the second end face, the elastic element is elastically stretched by the driving part, causing the other end of the limiting part to slide from the initial stop point along the first advancement groove to the first stop point, and causing the push rod to move towards its front end in the puncture needle to a first position, pushing out the first implantation part closest to the front end of the puncture needle from the puncture needle; when the force applied to the driving part is released, the driving part is pulled back by the elastic element, causing the other end of the limiting part to slide along the first return groove to the second stop point, and causing the push rod to move away from its front end in the puncture needle to a second position; and so on. When the driving part is forced to move toward the second end face, the elastic element is elastically stretched again by the driving part, causing the other end of the limiting part to slide from the second stop point along the second advance groove to the third stop point, and causing the push rod to move toward its front end in the puncture needle to the third position, thus pushing the second implantation part out of the puncture needle; when the force applied to the driving part is released again, the driving part is pulled back by the elastic element again, causing the other end of the limiting part to slide along the second return groove to the initial stop point, and causing the push rod to move away from its front end in the puncture needle to the fourth position.

[0015] Furthermore, the limiting part includes a hook, which has a horizontal bar and a vertical bar connecting the two ends of the horizontal bar, wherein one of the vertical bars away from the second end face is rotatably connected to the base, and the other vertical bar is slidably placed in the drive groove.

[0016] Furthermore, the base is provided with an upper cover, and the driving mechanism further includes a pushing part. The upper cover is fixedly connected to the base and forms a cavity for accommodating the driving mechanism. The upper cover is provided with a sliding port, and the pushing part is fixedly connected to the driving part through the sliding port. The length of the sliding port is adapted to the reciprocating stroke of the driving part. By applying a force toward the second end face through the pushing part, the driving part and the push rod are driven to move linearly, thereby the push rod pushes each of the implanted parts out of the puncture needle in sequence.

[0017] As can be seen from the above technical solution, the present invention can realize cyclic linear reciprocating motion through the driving mechanism, push different implants to be deployed accurately in the target position in sequence, and provide tactile and auditory feedback, thus making it less prone to misoperation.

[0018] Furthermore, it also includes a depth adjustment mechanism, comprising a cylindrical depth adjustment section, a puncture needle base, a depth limiting base, and a depth limiting section. One end of the puncture needle base passes through the second end face, and the other end is provided with a retaining ring. Two through guide grooves are symmetrically distributed along the axial direction of the puncture needle on the side wall of the puncture needle base. The depth adjustment section is sleeved on the outer periphery of the puncture needle base. One end of the depth adjustment section is provided with a first end face, and the other end is provided with a retaining groove that rotates with the retaining ring. Two spiral grooves are symmetrically provided on the inner wall of the depth adjustment section, and the first end face and the second end face face each other. The depth limiting base is located within the puncture needle base, and the depth limiting... Two sliding shafts are symmetrically arranged on the outer side of the base, and the sliding shafts pass through the guide groove and fall into the spiral groove. The depth limiting part is sleeved on the end of the depth limiting base away from the first end face. The rear end of the puncture needle is fixed in one end of the puncture needle base, and the front end of the puncture needle passes through the depth limiting base and is sleeved in the depth limiting part. When the depth adjusting part rotates relative to the puncture needle, the sliding shaft moves along the guide groove under the action of the spiral groove, so that the depth limiting base drives the depth limiting part to move relative to the axial direction of the puncture needle, thereby adjusting the exposed length of the front end of the puncture needle outside the depth limiting part.

[0019] Furthermore, the guide groove is provided with multiple lateral turning parts, one of which is provided with a matching depth point and a damping position. The damping position is used to cause the sliding shaft to be stopped when it moves through.

[0020] Furthermore, the base is provided with scale markings along the outer side of the second end face, the scale markings including a first mark, a second mark, and a third mark, the depth adjustment part is provided with an indicator along the outer side of the first end face, when the depth adjustment part is rotated so that the indicator points sequentially to the first mark to the third mark, the sliding shaft is sequentially located at the corresponding depth points in the guide groove, so that the tip of the puncture needle has different exposed lengths outside the depth restriction part.

[0021] Furthermore, the width of the guide groove at each of the damping positions is smaller than the diameter of the sliding shaft.

[0022] As can be seen from the above technical solution, the present invention can accurately control the puncture depth through the depth adjustment mechanism, thereby protecting other tissues from being punctured. It can also adjust the puncture depth in multiple levels and clearly display the puncture depth, which can improve the user's work efficiency, reduce surgical risks, and provide tactile feedback to remind the user.

[0023] Furthermore, it also includes a reinforcing tube, which is fixedly sleeved on the outside of the puncture needle. The rear end of the puncture needle is fixed to one end of the puncture needle base through the rear end of the reinforcing tube, and the front end of the reinforcing tube is always located in the depth limiting part.

[0024] As can be seen from the above technical solution, the present invention improves the strength of the puncture needle during use by fixing the reinforcing tube to the puncture needle.

[0025] Furthermore, it also includes an elastic limiting part, one side of which is fixedly connected to the inner wall of the upper cover, and the other side is always in contact with the limiting part, so that the other end of the limiting part is always placed in the drive groove.

[0026] Furthermore, it also includes sutures that connect the two implants. Attached Figure Description

[0027] Figures 1-2 This is a schematic diagram of the soft tissue suturing device according to an embodiment of the present invention;

[0028] Figure 3 This is an exploded view of the combined state of the soft tissue suturing device according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the puncture mechanism according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the driving mechanism according to an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the drive unit structure according to an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the drive slot structure according to an embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the external structure of the puncture depth adjustment structure according to an embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the depth-limiting base structure according to an embodiment of the present invention;

[0035] Figure 10 This is a schematic diagram of the depth adjustment part according to an embodiment of the present invention;

[0036] Figure 11 This is a schematic diagram of the corresponding structure of the two puncture needle base guide grooves in an embodiment of the present invention. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art. The terms "comprising" and similar expressions used herein mean that the element or object preceding the word covers the element or object listed following the word and its equivalents, but do not exclude other elements or objects.

[0038] To address the problems existing in the prior art, embodiments of the present invention provide a soft tissue suturing device, comprising: a base having a cavity for accommodating a driving mechanism, and a second end face at one end of the cavity; a puncture mechanism including a tubular puncture needle, wherein a plurality of implantation parts are sequentially placed in the front end of the puncture needle, and the rear end passes through the second end face; and a driving mechanism including a driving part, a limiting part, and an ejector rod, wherein the driving part has a closed annular driving groove, and the driving groove has a plurality of alternating, end-to-end connected, equally numerous advancing grooves and retracting grooves, wherein adjacent advancing grooves and retracting grooves form an angled stop at the connection point, and the stop includes an initial stop closest to the second end face, and in a predetermined direction away from the initial stop, all the even-numbered stops, including the initial stop, are... The distance between the point and the second end face is less than the distance between the adjacent odd-numbered stop points and the second end face, and the distance between all odd-numbered stop points and the second end face increases sequentially. One end of the limiting part is rotatably connected to the base on the side of the driving part away from the second end face, and the other end is placed in the driving groove. The rear end of the push rod is fixedly connected to the driving part, and the front end is coaxially inserted into the puncture needle from the rear end of the puncture needle. When the driving part moves back and forth relative to the second end face, the other end of the limiting part moves around the driving groove along the preset direction from the initial stop point, and stops the driving part at each stop point in sequence, driving the push rod to move back and forth in the puncture needle, pushing each implanted part out of the puncture needle one by one. Therefore, the present invention effectively solves the problems of complex operation, inability to provide suitable feedback, and inability of users to operate accurately in the existing driving mechanism and puncture mechanism, thereby enabling smooth deployment of implants and improving surgical efficiency.

[0039] refer to Figures 1 to 5 In some embodiments of the present invention, the base 110 has a boat-shaped structure, but is not limited to a boat-shaped structure. When using the device, the base 110 has a second end face 115 facing the skin tissue, and the second end face 115 is located on the outer surface of the end wall of the base 110 near the skin tissue. A first column 111 is provided on the boat-shaped bottom surface inside the base 110.

[0040] refer to Figure 4 In some embodiments of the present invention, the puncture mechanism 300 includes a tubular puncture needle 310. The front end of the puncture needle 310 has a puncture section 311, which is a straight tube that bends relative to the puncture needle 310. Multiple implantable parts can be sequentially placed in the puncture section 311. For example, there are two implantable parts: a first implantable part 410 and a second implantable part 420. The first implantable part 410 and the second implantable part 420 are placed sequentially in the puncture section 311 facing the front end of the puncture needle 310. The rear end of the puncture needle 310 passes through and is fixed to the second end face 115 of the base 110.

[0041] refer to Figure 5 and Figure 6 In some embodiments of the present invention, the drive mechanism 200 includes a drive unit 210, a limiting unit 220, and a push rod 250. The drive unit 210 is slidably disposed in the base 110. The drive unit 210 is provided with a closed annular drive groove 211. The drive groove 211 is provided with two alternately connected push grooves and two retraction grooves, the two push grooves being the first push groove 2115 and the second push groove 2117, and the two retraction grooves being the first retraction groove 2116 and the second retraction groove 2118. An initial stop point 2111 is formed at the connection point of the second retraction groove 2118 and the first propulsion groove 2115, located at an even-numbered position. A first stop point 2112 is formed at the connection point of the first propulsion groove 2115 and the first retraction groove 2116, located at an odd-numbered position. A second stop point 2113 is formed at the connection point of the first retraction groove 2116 and the second propulsion groove 2117, located at an even-numbered position. A third stop point 2114 is formed at the connection point of the second propulsion groove 2117 and the second retraction groove 2118, located at an odd-numbered position. The distance between the initial stop point 2111 and the second end face 115 is less than the distance between each stop point and the second end face 115. The distance between the first stop point 2112 and the second end face 115 is greater than the distance between the second stop point 2113 and the second end face 115. The distance between the second stop point 2113 and the second end face 115 is less than the distance between the third stop point 2114 and the second end face 115. The distance between the third stop point 2114 and the second end face 115 is greater than the distance between the first stop point 2112 and the second end face 115. In this embodiment, left and right correspond to... Figure 5 In the left-right direction shown, one end of the limiting part 220 is rotatably connected to the first column 111 of the base 110 on the left side of the drive part 210 away from the second end face 115, and the other end is placed in the drive groove 211. The left end of the push rod 250 is fixedly connected to the right side of the drive part 210, and the front end of the push rod 250 passes coaxially through the rear end of the puncture needle 310 and does not exceed the position of the first implantation part 410. When the drive part 210 is driven to move back and forth relative to the second end face 115, the other end of the limiting part 220 will move from the initial stop point 2111 along a preset direction (the preset direction corresponds to...). Figure 6 The device moves clockwise around the drive groove 211, and sequentially stops at the first stop 2111, the second stop 2113, the third stop 2114, and the initial stop 2111, thereby driving the push rod 250 to move back and forth within the puncture needle 310, pushing out the second implantation part 420 and the first implantation part 410 one by one from the puncture needle 310. The case where there are more than two advance grooves and retraction grooves can be understood similarly and will not be elaborated further.

[0042] refer to Figure 5In some embodiments of the present invention, the driving mechanism 200 further includes an elastic element 230, the left end of which (in this embodiment, left and right correspond to...) Figure 5 (As shown in the left-right direction) The drive part 210, located away from the second end face 115, is connected to the outer wall of the first column 111 on its left side. The right end of the elastic element 230 is connected to the left end of the drive part 210. When the drive part 210 is moved toward the second end face 115 by a force applied, the elastic element 230 is elastically stretched. When the force applied to the drive part 210 is released, the elastic element 230 elastically contracts, causing the drive part 210 to move away from the second end face 115.

[0043] refer to Figure 5 In some embodiments of the present invention, the elastic element 230 may be a spring, but is not limited to a spring.

[0044] refer to Figure 3 and Figure 5 In some embodiments of the present invention, the limiting part 220 includes, but is not limited to, a hook, which is provided with a horizontal bar 223, a first vertical bar 221 and a second vertical bar 222. The first vertical bar 221 is connected to the first column 111 and can rotate relative to it, and the second vertical bar 222 is placed in the drive groove 211 and can slide along the drive groove 211.

[0045] refer to Figures 1 to 3 In some embodiments of the present invention, the soft tissue suturing device further includes an upper cover 120 and a pushing part 240. The upper cover 120 is detachably connected to the base 110 and together form a cavity for accommodating the driving mechanism 200, thereby allowing the driving part 210 to slide within the cavity. The upper cover 120 is provided with a sliding port 121. A second column 212 is provided on the side of the driving groove 211 near the second end face 115 of the driving part 210. The pushing part 240 is fixedly connected to the second column 212 of the driving part 210 through the sliding port 121. The length of the sliding port is adapted to the reciprocating stroke of the driving part 210. By applying a force toward the second end face 115 to the pushing part 240, the driving part 210 and the push rod 250 are driven to move linearly, thereby pushing the second implantation part 420 and the first implantation part 410 out of the puncture needle 310 in a preset sequence.

[0046] refer to Figure 1 and Figure 3 In some embodiments of the present invention, the soft tissue suturing device further includes an elastic limiting part 130. One side of the elastic limiting part 130 is connected to the inner wall of the upper cover 120, and the other side is always in contact with the first crossbar 223. The elastic limiting part 130 can apply reverse pressure to the first crossbar 223, so that the second vertical bar 222 is always kept in the drive groove 211.

[0047] refer to Figure 6In some embodiments of the present invention, according to the preset form of the drive groove 211, the preset direction is clockwise as indicated by the arrow. Before use, the second vertical rod 222 of the hook is at the initial stop point 2111. When a force is applied to the push part 240 to drive the drive part 210 to move toward the second end face 115, the elastic element 230 is elastically stretched by the drive part 210, and the second vertical rod 222 slides from the initial stop point 2111 along the first push groove 2115 to the first stop point 2112, driving the push rod 250 to move forward from the initial position to the front end of the puncture needle 310 to the first position, pushing the second implantation part 420 out of the puncture needle 310; when the force applied to the push part 240 is released, the drive part 210 is pulled back by the elastic element 230, and the second vertical rod 222 slides along the first return groove 2116 to the second end face 115. At stop 2113, the push rod 250 moves backward in the puncture needle 310 away from its front end to the second position; when force is applied to the push part 240 again to make the drive part 210 move toward the second end face 115, the second vertical rod 222 slides from the second stop 2113 along the second push groove 2117 to the third stop 2114, and the push rod 250 moves forward in the puncture needle 310 to the third position, pushing the first implantation part 410 out of the puncture needle 310; when the force applied to the push part 240 is released again, the second vertical rod 222 slides along the second return groove 2118 to the initial stop 2111, and the push rod 250 moves backward in the puncture needle 310 away from its front end to the fourth position. The distance by which the push rod 250 moves forward from its initial position to the front end of the puncture needle 310 to the first position corresponds to the length of the first push groove 2115. The distance by which the push rod 250 moves backward from the first position in the puncture needle 310 away from its front end to the second position corresponds to the length of the first return groove 2116. The distance by which the push rod 250 moves forward from the second position in the puncture needle 310 to the front end to the third position corresponds to the length of the second push groove 2117. The distance by which the push rod 250 moves backward from the third position in the puncture needle 310 away from its front end to the fourth position corresponds to the length of the second return groove 2118.

[0048] refer to Figure 7 In some embodiments of the present invention, a check structure, such as a step 2119, is provided at the transition between the advancement groove and the retraction groove. Therefore, the sliding direction of the second vertical rod 222 is irreversible, and it can only perform a preset relative motion cycle with respect to the drive groove 211, thereby ensuring that the implant is deployed in sequence and avoiding user misoperation. At the same time, when the second vertical rod 222 slides over the step 2119, it will generate vibration and sound feedback to remind the user that the implant has been deployed as required, at which point the force can be canceled.

[0049] The cooperation between the drive unit 210 and the hook allows the implant (implant) to be deployed in the expected order (preset direction) by applying a force in a single direction to the push unit 240. It has a built-in limit and reset mechanism (the cooperation of the stop point and the spring), deploying only one implant at a time. The operation is simple, the logic is clear, and it is not easy to make mistakes. The design of the drive groove step 2119 also ensures that the hook will not slide in the opposite direction.

[0050] refer to Figures 8 to 11 In conjunction with references Figure 1 ,in, Figure 11The two opposing side structures of the puncture needle base 330 are shown symmetrically for ease of understanding. In some embodiments of the present invention, the soft tissue suturing device further includes a depth adjustment mechanism. The depth adjustment mechanism includes a cylindrical depth adjustment part 360, a puncture needle base 330, a depth limiting base 350, and a depth limiting part 340. The depth adjustment part 360, the puncture needle base 330, and the depth limiting base 350 are sequentially nested from the outside in. One end of the puncture needle base 330 passes through the second end face 115 (i.e., the end wall of the base 110 near the skin tissue), and the other end is provided with a retaining ring 333. Symmetrically distributed through first guide grooves 331 and second guide grooves 332 along the axial direction of the puncture needle 310 are provided on the side wall of the puncture needle base 330. A depth adjustment part 360 is sleeved on the outer periphery of the puncture needle base 330. One end of the depth adjustment part 360 facing the base 110 has a first end face 366, which is aligned with a second end face 115. The other end has a retaining groove 364 for connection with a retaining ring 333. A first spiral groove 362 and a second spiral groove 363 are symmetrically arranged on the inner wall of the depth adjustment part 360. A depth limiting base 350 is located within the puncture needle base 330. A first sliding shaft 351 and a second sliding shaft 352 are symmetrically arranged on the outer side of the depth limiting base 350. The two sliding shafts pass through guide grooves and fall into the spiral grooves. A first conical shaft 353 and a first through hole 354 are provided on the end of the depth limiting base 350 away from the first end face 366. A depth limiting part 340 is sleeved on the outer side of the first conical shaft 353. The rear end of the puncture needle is fixed in one end of the puncture needle base, and the front end of the puncture needle 310 passes through the depth limiting base 350 and is fitted into the depth limiting part 340. The outer periphery of the depth adjustment part 360 is provided with an annular groove 365, which increases friction and facilitates user rotation of the depth adjustment part 360. When the depth adjustment part 360 rotates relative to the puncture needle 310, the sliding shaft moves along the guide groove under the action of the helical groove, causing the depth limiting base 350 to drive the depth limiting part 340 to move axially relative to the puncture needle 310, thereby adjusting the exposed length of the front end of the puncture needle 310 outside the depth limiting part 340. The outer diameter of the depth limiting part 340 is larger than that of the puncture needle 310. When the puncture needle 310 passes through the tissue, the depth limiting part 340 will remain outside the tissue. The distance between the end face of the depth limiting part 340 away from the base 110 and the front end of the puncture needle 310 away from the base 110 is the puncture depth. Controlling the puncture depth can protect other tissues from accidental puncture.

[0051] refer to Figure 3 and Figure 4In some embodiments of the present invention, the push rod 250, puncture needle 310, reinforcing tube 320, and depth limiting part 340 are sequentially sleeved from the inside out. The push rod 250 can move linearly relative to the axial direction of the puncture needle 310, and the depth limiting part 340 can also move linearly relative to the axial direction of the puncture needle 310. The front end of the puncture section 311 near the skin tissue is a needle tip, which can be used to puncture soft tissue. The reinforcing tube 320 is fixedly connected to the puncture needle base 330, and the puncture needle base 330 is fixedly connected to the base 110. The reinforcing tube 320 can improve the strength of the puncture needle 310 during use and prevent the puncture needle 310 from bending and deforming.

[0052] The ejector rod 250 can be made of nickel-titanium or other materials with good strength and toughness, so that it has low friction and high strength, making it easy to eject the implant from the puncture segment 311.

[0053] refer to Figures 8 to 11In some embodiments of the present invention, the base 110 is provided with scale markings along the outer side (sidewall) of the second end face 115. The scale markings include a first marking 112, a second marking 113, and a third marking 114, and the numbers on the scale markings correspond to the puncture depth. The depth adjustment part 360 is provided with an indicator 361 along the outer side (sidewall) of the first end face 366. The depth adjustment part 360 can maintain three stable positions when rotating, at which time the indicator 361 corresponds to the scale markings 112, 113, and 114, respectively. The two guide grooves are provided with multiple lateral turning parts, where lateral refers to the axial direction relative to the puncture needle 310. Among them, the turning part of the first guide groove 331 is provided with a matching depth point and a damping position, that is, the first guide groove 331 includes a first depth point 3311, a second depth point 3312, a third depth point 3313, a first damping position 3314, a second damping position 3315, and a third damping position 3316. The first sliding shaft 351 of the depth limiting base 350 successively engages with the first guide groove 331 of the puncture needle base 330 and the first spiral groove 363 of the depth adjustment part 360. The second sliding shaft 352 of the depth limiting base 350 successively engages with the second guide groove 332 of the puncture needle base 330 and the second spiral groove 363 of the depth adjustment part 360. The sliding shaft can slide within the guide groove and the spiral groove. When the depth adjustment part 360 is rotated, the spiral groove of the depth adjustment part 360 generates a force along the spiral direction on the sliding shaft. This force along the spiral direction can be decomposed into a tangential force and an axial force. The fixed guide groove provides a reaction force to counteract the tangential force, and the remaining axial force causes the sliding shaft to move linearly along the guide groove. This causes the depth limiting base 350 to drive the depth limiting part 340 to move along the axial direction of the base 110, thereby adjusting the puncture depth. The width of the first guide groove 331 at the three damping positions 3314, 3315, and 3316 is smaller than the diameter of the sliding shaft. A certain force needs to be applied to allow the sliding shaft to pass through the damping positions, thus providing haptic feedback. At the same time, the damping positions are used to cause the sliding shaft to stop when it moves through them, that is, to stop under a certain driving force and resistance, so that the sliding shaft can stay stably at the three depth points 3311, 3312, and 3313. Initially, the indicator 361 of the depth adjustment unit 360 corresponds to the first mark 112 of the base 110, at which time the first sliding shaft 351 is located at the first depth point 3311; rotating the depth adjustment unit 360 makes the indicator 361 correspond to the second mark 113, at which time the first sliding shaft 351 is located at the second depth point 3312; continuing to rotate the depth adjustment unit 360 makes the indicator 361 correspond to the third mark 114, at which time the first sliding shaft 352 is located at the third depth point 3313; if rotated in the opposite direction, the puncture depth can be adjusted in the opposite direction.

[0054] The depth limiting part 340 and the depth limiting base 350 are interference fit. The depth limiting part 340 can be made of plastic and can be bent and deformed under stress.

[0055] The combination of the depth limiting base 350, the puncture needle base 330, and the depth adjustment part 360 allows for easy adjustment of the puncture depth, and it can be adjusted in both directions. The scale markings on the base 110 clearly show the set puncture depth.

[0056] refer to Figure 3 In some embodiments of the present invention, the implant includes a first implantation portion 410, a second implantation portion 420, and a suture 430, wherein the first implantation portion 410 and the second implantation portion 420 are connected by the suture 430. The first implantation portion 410 and the second implantation portion 420 are coaxial with the puncture segment 311 and are sequentially installed in the puncture segment 311.

[0057] Existing technologies control the release sequence through an additional switch or use two sets of puncture release structures to ensure the release order of implants, which is relatively cumbersome. Compared with existing technologies, this invention is simple to operate, logically clear, and less prone to errors. When using this invention, simply operating the push unit 240 forward releases the implant. A limit structure ensures that implants are not released continuously when releasing the first implant. After the force is released, the spring returns to its original position and the hook slides to the second push groove 2117. Applying force again releases the second implant. The process is accompanied by audible and vibration feedback to alert the user.

[0058] Furthermore, existing technologies control puncture depth by cutting a depth limiting section, which is cumbersome and irreversible; or by using other length adjustment mechanisms, bidirectional adjustments are prone to jamming. Compared to existing technologies, the puncture depth adjustment mechanism of this invention is simple to operate, provides clear indication, and is reversible in adjustment, with a limiting structure ensuring the stability of the depth limiting section 340's position. Simply rotating the depth adjustment section 360 to align the indicator 361 with a certain scale mark allows the puncture depth to be set to the value on the scale mark.

[0059] Furthermore, existing technologies typically use thinner puncture needles to ensure a smaller puncture hole for implant fixation, resulting in lower strength. Compared to existing technologies, the reinforcing tube 320 of this invention is fixedly connected to the puncture needle 310, which can improve the strength of the puncture needle 310; at the same time, the reinforcing tube 320 is shorter than the puncture needle 310, so it will not affect the size of the puncture hole at the tip of the puncture needle 310.

[0060] While embodiments of the present invention have been described in detail above, it will be apparent to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations fall within the scope and spirit of the invention as set forth in the claims. Furthermore, the invention described herein may have other embodiments and can be implemented or carried out in various ways.

Claims

1. A soft tissue suturing device, characterized in that, include: The base has a second end face; The puncture mechanism includes a tubular puncture needle, in which multiple implantation parts are sequentially placed at the front end and the rear end extends beyond the base onto the second end face. The driving mechanism includes a driving part, a limiting part, and an ejector rod. The driving part is slidably mounted on the base relative to the rear end of the puncture needle. The driving part has a closed annular driving groove. The driving groove has a plurality of alternating, end-to-end, equal-numbered advancing and retreating grooves. Adjacent advancing and retreating grooves form an angled stop at their connection point. Among the stop points is an initial stop point closest to the second end face. In a predetermined direction away from the initial stop point, the distance between all even-numbered stop points (including the initial stop point) and the second end face is less than the distance between adjacent odd-numbered stop points and the second end face. The distance between the stop point of the digital part and the second end face increases sequentially; one end of the limiting part is rotatably connected to the base on the side of the driving part away from the second end face, and the other end is placed in the driving groove; the rear end of the push rod is fixedly connected to the driving part, and the front end is coaxially inserted into the puncture needle from the rear end of the puncture needle. When the driving part moves back and forth relative to the second end face, the other end of the limiting part moves around the driving groove from the initial stop point along the preset direction, and stops the driving part at each stop point in sequence, driving the push rod to move back and forth in the puncture needle, and pushing each implanted part out of the puncture needle one by one; A depth adjustment mechanism includes a cylindrical depth adjustment section, a puncture needle base, a depth limiting base, and a depth limiting section. One end of the puncture needle base passes through a second end face, and the other end is provided with a retaining ring. Two through guide grooves are symmetrically distributed along the axial direction of the puncture needle on the side wall of the puncture needle base. The depth adjustment section is sleeved on the outer periphery of the puncture needle base. One end of the depth adjustment section is provided with a first end face, and the other end is provided with a retaining groove that rotates with the retaining ring. Two spiral grooves are symmetrically provided on the inner wall of the depth adjustment section, and the first end face and the second end face face each other. The depth limiting base is located within the puncture needle base. Two sliding shafts are symmetrically arranged on the outer side, and the sliding shafts pass through the guide groove and fall into the spiral groove. The depth limiting part is sleeved on the end of the depth limiting base away from the first end face. The rear end of the puncture needle is fixed in one end of the puncture needle base, and the front end of the puncture needle passes through the depth limiting base and is sleeved in the depth limiting part. When the depth adjusting part rotates relative to the puncture needle, the sliding shaft moves along the guide groove under the action of the spiral groove, so that the depth limiting base drives the depth limiting part to move relative to the axial direction of the puncture needle, thereby adjusting the exposed length of the front end of the puncture needle outside the depth limiting part.

2. The soft tissue suturing device according to claim 1, characterized in that, A check valve structure is provided at the transition between adjacent propulsion grooves and retraction grooves. The check valve structure is located on the bottom surface of the drive groove after the corresponding stop point along a preset direction, so that the other end of the limiting part can only slide in the drive groove along the preset direction.

3. The soft tissue suturing device according to claim 1, characterized in that, The puncture needle has a puncture section at its front end. The puncture section is a straight tube that turns relative to the puncture needle, and each of the implantation parts is placed in the puncture section in sequence.

4. The soft tissue suturing device according to claim 1, characterized in that, The drive mechanism further includes an elastic element. One end of the elastic element is connected to the base on the side of the drive part away from the second end face, and the other end is connected to the drive part. When the drive part is forced to move toward the second end face, the elastic element elastically stretches. When the force applied to the drive part is released, the elastic element elastically contracts, causing the drive part to move away from the second end face.

5. The soft tissue suturing device according to claim 4, characterized in that, The elastic element includes a spring.

6. The soft tissue suturing device according to claim 4, characterized in that, The drive slot has two advance slots and two retraction slots. Adjacent advance slots and retraction slots form a stop point at their connection point that is less than a right angle. The two advance slots are designated as the first advance slot and the second advance slot, and the two retraction slots are designated as the first retraction slot and the second retraction slot. The connection point between the second retraction slot and the first advance slot forms an initial stop point at an even-numbered position. The connection point between the first advance slot and the first retraction slot forms a first stop point at an odd-numbered position. The connection point between the first retraction slot and the second advance slot forms a second stop point at an even-numbered position. A third stop point is formed at the connection point of the groove, located at an odd-numbered position; the distance between the initial stop point and the second end face is less than the distance between each of the stop points and the second end face, the distance between the first stop point and the second end face is greater than the distance between the second stop point and the second end face, the distance between the second stop point and the second end face is less than the distance between the third stop point and the second end face, and the distance between the third stop point and the second end face is greater than the distance between the first stop point and the second end face; there are two implanted parts; the driving part is forcefully directed towards the... When the second end face moves, the elastic element is elastically stretched by the driving part, causing the other end of the limiting part to slide from the initial stop point along the first advancement groove to the first stop point, and causing the push rod to move towards its front end in the puncture needle to a first position, pushing out the first implantation part closest to the front end of the puncture needle from the puncture needle; when the force applied to the driving part is released, the driving part is pulled back by the elastic element, causing the other end of the limiting part to slide along the first return groove to the second stop point, and causing the push rod to move away from its front end in the puncture needle to a second position; and so on. When the driving part is forced to move toward the second end face, the elastic element is elastically stretched again by the driving part, causing the other end of the limiting part to slide from the second stop point along the second advance groove to the third stop point, and causing the push rod to move toward its front end in the puncture needle to the third position, thus pushing the second implantation part out of the puncture needle; when the force applied to the driving part is released again, the driving part is pulled back by the elastic element again, causing the other end of the limiting part to slide along the second return groove to the initial stop point, and causing the push rod to move away from its front end in the puncture needle to the fourth position.

7. The soft tissue suturing device according to claim 1, characterized in that, The limiting part includes a hook, which has a horizontal bar and a vertical bar connecting the two ends of the horizontal bar. One of the vertical bars, which is away from the second end face, is rotatably connected to the base, and the other vertical bar is slidably placed in the drive groove.

8. The soft tissue suturing device according to claim 1, characterized in that, The base is provided with an upper cover, and the driving mechanism further includes a pushing part. The upper cover is fixedly connected to the base and forms a cavity to accommodate the driving mechanism. The upper cover is provided with a sliding port. The pushing part is fixedly connected to the driving part through the sliding port. The length of the sliding port is adapted to the reciprocating stroke of the driving part. The pushing part applies a force toward the second end face to drive the driving part and the push rod to move linearly. Thus, the push rod pushes each of the implanted parts out of the puncture needle in sequence.

9. The soft tissue suturing device according to claim 1, characterized in that, The guide groove is provided with multiple lateral turning parts, and one of the turning parts of the guide groove is provided with a matching depth point and a damping position. The damping position is used to cause the sliding shaft to be stopped when it moves through.

10. The soft tissue suturing device according to claim 9, characterized in that, The base is provided with scale markings along the outer side of the second end face. The scale markings include a first mark, a second mark, and a third mark. The depth adjustment part is provided with an indicator along the outer side of the first end face. When the depth adjustment part is rotated so that the indicator points sequentially to the first mark to the third mark, the sliding shaft is sequentially located at the corresponding depth points in the guide groove, so that the tip of the puncture needle has different exposed lengths outside the depth restriction part.

11. The soft tissue suturing device according to claim 9, characterized in that, The width of the guide groove at each of the damping positions is smaller than the diameter of the sliding shaft.

12. The soft tissue suturing device according to claim 1, characterized in that, It also includes a reinforcing tube, which is fixedly sleeved on the outside of the puncture needle. The rear end of the puncture needle is fixed to one end of the puncture needle base through the rear end of the reinforcing tube, and the front end of the reinforcing tube is always located in the depth limiting part.

13. The soft tissue suturing device according to claim 8, characterized in that, It also includes an elastic limiting part, one side of which is fixedly connected to the inner wall of the upper cover, and the other side is always in contact with the limiting part, so that the other end of the limiting part is always placed in the drive groove.

14. The soft tissue suturing device according to claim 6, characterized in that, It also includes sutures that connect the two implants.

Images