Locking force adjustable thread locking device

Abstract

The utility model discloses a lock threader with adjustable locking force, relates to the technical field of medical devices, and its scheme includes: first limit structure and second limit structure, first limit structure end part is used for locking line to pass through, and the both ends of locking line are fixedly connected anchor, and first limit structure sets up in second limit structure, be provided with a plurality of first limit slot on the lateral wall of second limit structure, and a plurality of first limit slot are along the axial interval arrangement of second limit structure, be provided with the limit lug on first limit structure, and limit lug can selectively set up in the first limit slot of different position, so that first limit structure axial movement is used for pulling and relaxing locking line, when limit lug is located first limit slot, limit lug and first limit slot are used for limiting the axial movement of first limit structure to lock locking line. The device can change the position of limit lug in different first limit slot, adjust the locking force size of locking line, and the operation is convenient, saves the operation time.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a locking device with adjustable locking force. Background Technology

[0002] In valve annulus repair surgery, a suture lock is used to tighten multiple anchors, thereby controlling the valve annulus tissue fixed by the anchors to move closer together to achieve valve annulus contraction. In traditional techniques, a suture lock is placed on the locking line connecting two anchors. The two anchors are tightened by controlling the rotation of the suture lock to pull the locking line. Locking the suture lock provides continuous tension, thus achieving valve annulus contraction. However, due to poor intraoperative visualization, the locking operation relies heavily on the surgeon's experience. If the surgeon discovers insufficient tightening after locking the suture, it can only be addressed by re-implanting the anchor or by a complex process of locking and disconnecting the suture lock, wasting surgical time and affecting overall surgical efficiency. Therefore, there is an urgent need for a suture lock that can quickly adjust the tightening force. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, the present invention provides a locking device with adjustable locking force.

[0004] To achieve the above objectives, this utility model provides a wire locking device with adjustable locking force, comprising: A first limiting structure and a second limiting structure, wherein the end of the first limiting structure is used for the locking line to pass through, and the two ends of the locking line are fixedly connected to anchor nails, and the first limiting structure is axially limited and connected within the second limiting structure; A plurality of first limiting grooves are provided on the side wall of the second limiting structure. The plurality of first limiting grooves are spaced apart along the axial direction of the second limiting structure. A limiting protrusion is provided on the first limiting structure. The limiting protrusion can be selectively provided in the first limiting groove at different positions so that the first limiting structure can move axially to pull and loosen the locking line. When the limiting protrusion is located in the first limiting groove, the limiting protrusion and the first limiting groove are used to restrict the axial movement of the first limiting structure to lock the locking line.

[0005] Preferably, an axial first sliding groove and a plurality of circumferential second sliding grooves are provided on the side wall of the second limiting structure, the plurality of second sliding grooves respectively corresponding to and communicating with a plurality of first limiting grooves, and the first sliding grooves communicating with a plurality of second sliding grooves; The first and second slides are used to allow the limiting protrusion to move within the plurality of first limiting slots.

[0006] Preferably, the first slide groove, the plurality of first limiting grooves and the plurality of second slide grooves are arranged in two sets, and are respectively arranged opposite to each other on the side wall of the second limiting structure; The two sets of the first limiting groove, the first sliding groove and the second sliding groove are rotationally symmetrical about the center of the second limiting structure.

[0007] Preferably, a first through hole is provided on the side wall of the first limiting structure, the first through hole is used for the insertion of the limiting protrusion, and when the limiting protrusion is inserted into the first through hole, both ends of the limiting protrusion extend out of the first limiting structure.

[0008] Preferably, the first limiting groove is disposed at the top of the second sliding groove.

[0009] Preferably, the first limiting structure includes a folding part and an insertion part, wherein the folding part is fixedly connected to one end of the insertion part and is located on the center line of the insertion part; The radial width of the folded part is smaller than the diameter of the insertion part. The folded part is used for the locking line to pass through. The limiting protrusion is provided on the circumferential sidewall of the insertion part. When the limiting protrusion moves axially, causing the first limiting structure to pull the locking line, part of the locking line extends into and folds into the space between the side wall of the folded part and the side wall of the insertion part.

[0010] Preferably, a second limiting groove is also provided on the side wall of the first limiting structure. The second limiting groove is located at one end of the first sliding groove near the locking line, and the second limiting groove is in communication with the first sliding groove. When the limiting protrusion is located in the second limiting groove, the locking line is completely outside the second limiting structure.

[0011] Preferably, a locking spring tube is detachably connected to the end of the second limiting structure away from the locking line, and the locking spring tube is circumferentially limited to the second limiting structure to control the rotation of the first limiting structure.

[0012] Preferably, a guide cable is detachably connected to the end of the first limiting structure away from the locking line, and the guide cable is used to guide the locking spring tube to be installed with the second limiting structure.

[0013] Preferably, a first insert is provided at the end of the spring tube of the wire lock, and a first slot is provided at the end of the second limiting structure. When the first insert is inserted into the first slot, the spring tube of the wire lock is circumferentially limited and connected to the second limiting structure.

[0014] Based on this, the beneficial effects of this utility model are as follows: With the device of this invention, when the first limiting structure is pulled axially, the locking line can be pulled, thereby tightening the two anchors to achieve valve annular retraction. When the limiting protrusion is located in the first limiting groove, the reverse axial movement of the first limiting structure can be restricted, achieving the effect of continuously tightening the anchors. Furthermore, when the limiting protrusion is controlled to be located in the first limiting groove at different axial positions, different pulling forces can be applied to the locking line, thereby achieving adjustable locking force. This allows doctors to adjust quickly and at any time, making it convenient to use, significantly saving surgical time, and improving surgical efficiency. Attached Figure Description

[0015] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This diagram schematically illustrates the first usage state of a wire lock according to one embodiment of the present invention. Figure 2 This diagram schematically illustrates the second usage state of a wire lock according to one embodiment of the present invention. Figure 3 A schematic diagram illustrating the structure of the first limiting structure according to one embodiment of the present invention; Figure 4 A schematic diagram illustrating the structure of the second limiting structure according to one embodiment of the present invention; Explanation of reference numerals in the attached drawings: 10-First limiting structure, 101-Limiting protrusion, 102-First through hole, 103-Folding part, 104-Insert part, 20-Second limiting structure, 201-First limiting groove, 202-First sliding groove, 203-Second sliding groove, 204-Second limiting groove, 30-Locking line, 40-Anchor pin, 50-Locking spring tube, 60-Guide steel cable. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms "a," "the," and "the" as used in the embodiments of this application are also intended to include the plural forms unless the context clearly indicates otherwise.

[0018] It should be understood that although the terms first, second, third, etc., may be used to describe related structures in the embodiments of this application, these related structures should not be limited to these terms. These terms are only used to distinguish related structures from each other.

[0019] Depending on the context, the word "if" as used here can be interpreted as "when" or "when". Similarly, depending on the context, the phrase "if determined" can be interpreted as "when determined" or "when (the condition or event of the statement) is detected".

[0020] It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should also be understood that when it is mentioned that an element is formed "upper" or "lower" of another element, it can not only be formed directly "upper" or "lower" of the other element, but also indirectly "upper" or "lower" of the other element through an intermediate element.

[0021] Figure 1 This diagram schematically illustrates the first usage state of a wire lock according to one embodiment of the present invention. Figure 2 This diagram schematically illustrates the second usage state of a wire lock according to one embodiment of the present invention, as shown below. Figure 1 , 2 As shown, this utility model discloses a wire locking device with adjustable locking force, comprising: The first limiting structure 10 and the second limiting structure 20 are provided. The end of the first limiting structure 10 is used for the locking line 30 to pass through. The two ends of the locking line 30 are fixedly connected to the anchor nails 40. The first limiting structure 10 is axially limited and connected to the second limiting structure 20. A plurality of first limiting grooves 201 are provided on the side wall of the second limiting structure 20. The plurality of first limiting grooves 201 are spaced apart along the axial direction of the second limiting structure 20. A limiting protrusion 101 is provided on the first limiting structure 10. The limiting protrusion 101 can be selectively provided in the first limiting grooves 201 at different positions so that the first limiting structure 10 can move axially to pull and loosen the locking line 30. When the limiting protrusion 101 is located in the first limiting groove 201, the limiting protrusion 101 and the first limiting groove 201 are used to restrict the axial movement of the first limiting structure 10 to lock the locking line 30.

[0022] With this configuration, when the valve annulus contracts, the first limiting structure 10 is pulled to move axially relative to the second limiting structure 20, thereby pulling the locking line 30 so that part of the locking line 30 extends into the second limiting structure 20, thus pulling the anchor 40. At the same time, the limiting protrusion 101 is set in the first limiting groove 201, which can restrict the axial movement of the limiting protrusion 101, thereby locking the anchor 40. If it is found that the locking is not in place, the limiting protrusion 101 can be moved out of the first limiting groove 201 and moved to another position of the first limiting groove 201 to adjust the tension of the anchor 40. The overall structure is easy to use, greatly saves surgical time, and improves surgical efficiency.

[0023] Furthermore, Figure 3 This diagram schematically illustrates the structure of the first limiting structure according to one embodiment of the present invention. Figure 4 This schematic diagram illustrates the structure of the second limiting structure according to one embodiment of the present invention. Figure 3 , 4 As shown: An axial first sliding groove 202 and a plurality of circumferential second sliding grooves 203 are provided on the side wall of the second limiting structure 20. The plurality of second sliding grooves 203 are respectively connected to a plurality of first limiting grooves 201. The first sliding groove 202 is connected to the plurality of second sliding grooves 203. The first sliding groove 202 and the second sliding groove 203 are used to allow the limiting protrusion 101 to move in the plurality of first limiting grooves 201.

[0024] Specifically, when the limiting protrusion 101 is located in the first slide groove 202, the first limiting structure 10 is circumferentially limited by the two side walls of the first slide groove 202. The first limiting structure 10 moves axially along the first slide groove 202 to further tighten or loosen the locking line 30, thereby adjusting the locking force. When it corresponds to the second slide groove 203, the first limiting structure 10 is circumferentially rotated so that the limiting protrusion 101 is located in the second slide groove 203. The first limiting structure 10 is rotated until it corresponds to the first limiting groove 201. At this time, the first limiting structure 10 is released, so that the axial displacement of the first limiting structure 10 is restricted by the axial side wall of the first limiting groove 201, thereby locking the first limiting structure 10 and locking the locking line 30.

[0025] Furthermore, two sets of first sliding groove 202, multiple first limiting grooves 201 and multiple second sliding grooves 203 are provided and are respectively arranged opposite to each other on the side wall of the second limiting structure 20.

[0026] Specifically, such as Figure 4As shown, the first slide groove 202 is located on the left side of the second slide groove 203, and the first limiting groove 201 is located on the right side of the second slide groove 203. The two sets are rotationally symmetrical about the center of the second limiting structure, with a rotation angle of 180°, so that when the limiting protrusion 101 is located in the second slide groove 203 and moves circumferentially, both ends of the limiting protrusion 101 can move synchronously into the first slide groove 202 or the first limiting groove 201.

[0027] Furthermore, a radially penetrating first through hole 102 is provided on the side wall of the first limiting structure 10. The first through hole 102 is used for the insertion of the limiting protrusion 101. When the limiting protrusion 101 is inserted into the first through hole 102, both ends of the limiting protrusion 101 extend out of the first limiting structure 10.

[0028] With this configuration, the limiting protrusion 101 is movably mounted on the first limiting structure 10, which facilitates the second limiting structure 20 to be fitted onto the first limiting structure 10. When the second limiting structure 20 is fitted onto the first limiting structure 10, the limiting protrusion 101 is inserted from the outside of the second limiting structure 20, allowing it to pass through the first sliding groove 202 and the first through hole 102, and extend out from the first sliding groove 202 on the other side, thereby achieving matching and limiting with the first sliding groove 202, the second sliding groove 203, and the first limiting groove 201.

[0029] Furthermore, the first limiting groove 201 is disposed at the top of the second sliding groove 203. When the limiting protrusion 101 moves to the position of the first limiting groove 201, the first limiting structure 10 is no longer subjected to tension. At this time, the first limiting structure 10 moves axially in the opposite direction under the elastic force of the locking line 30 and enters the first limiting groove 201 at the top. At this time, the axial sidewall of the first limiting groove 201 can limit the axial movement of the first limiting structure 10, and the circumferential sidewall of the first limiting groove 201 can limit the circumferential rotation of the first limiting structure 10, thereby locking the first limiting structure 10.

[0030] Furthermore, the first limiting structure 10 includes a folding part 103 and an insertion part 104. The folding part 103 is fixedly connected to one end of the insertion part 104 and is located on the center line of the insertion part 104. The radial width of the folded part 103 is smaller than the diameter of the insertion part 104. The folded part 103 is used for the locking line 30 to pass through. The insertion part 104 is provided with a limiting protrusion 101 on its circumferential sidewall. When the limiting protrusion 101 moves axially and causes the first limiting structure 10 to pull the locking line 30, part of the locking line 30 extends into and folds into the space between the side wall of the folding part 103 and the side wall of the insertion part 104.

[0031] With this configuration, the radial width of the folding part 103 is set to be smaller than the diameter of the insertion part 104, so that when the first limiting structure 10 pulls the locking line 30 axially, the locking line 30 can be folded in the space between the folding part 103 and the second limiting structure 20, which can fully accommodate the locking line 30.

[0032] Furthermore, a second limiting groove 204 is also provided on the side wall of the first limiting structure 10. The second limiting groove 204 is located at one end of the first sliding groove 202 near the locking line 30, and the second limiting groove 204 is connected to the first sliding groove 202. When the limiting protrusion 101 is located in the second limiting groove 204, the locking line 30 is completely outside the second limiting structure 20.

[0033] Specifically, during initial installation, after the second limiting structure 20 is fitted onto the first limiting structure 10, the folded part 103 exposes the first limiting structure 10 and the locking line 30 passes through it. At this time, the locking line 30 is in a straight state. The second limiting groove 204 is correspondingly set with the first through hole 102. By inserting the limiting protrusion 101 from the outside of the second limiting structure 20 into the second limiting groove 204, the limiting protrusion 101 passes through the first through hole 102 and is installed on the first limiting structure 10, thus completing the limiting and installation.

[0034] Furthermore, a locking spring tube 50 is detachably connected to one end of the second limiting structure 20 away from the locking line 30. The locking spring tube 50 is circumferentially limited to the second limiting structure 20 to control the rotation of the first limiting structure 10.

[0035] Meanwhile, a guide cable 60 is detachably connected to one end of the first limiting structure 10 away from the locking line 30. The guide cable 60 is used to guide the locking spring tube 50 to the second limiting structure 20 during installation.

[0036] Specifically, when the anchor 40 is implanted, the anchor 40 is implanted by connecting the guide cable 60 to the first limiting structure 10 and controlling the overall movement to the surgical position of the valve annulus tissue. After implantation, the guide cable 60 is fitted with a locking spring tube 50, and the end of the guide cable 60 is brought into contact with the second limiting structure 20 and circumferentially limited by the guiding action of the guide cable 60, thus completing the installation. At this time, the second limiting structure 20 can be rotated by controlling the rotation of the locking spring tube 50, thereby completing the movement of the limiting protrusion 101 between the first limiting groove 201, the first sliding groove 202, the second sliding groove 203 and the second limiting groove 204.

[0037] When the spring tube 50 of the cable lock is circumferentially limited and connected to the second limiting structure 20, a first insert (not shown in the figure) can be provided at the end of the spring tube 50 of the cable lock, and a first slot (not shown in the figure) can be provided at the end of the second limiting structure 20. When the first insert is inserted into the first slot, the spring tube 50 of the cable lock is circumferentially limited and connected to the second limiting structure 20. It is understandable that a first slot could be provided at the end of the spring tube 50 of the locking device, and a first insert could be provided at the end of the second limiting structure 20 to achieve circumferential limiting connection between the two.

[0038] In summary, the locking device of this utility model achieves the tightening of the locking wire 30 by connecting the second limiting structure 20 to the first limiting structure 10 and by moving the first limiting structure 10 axially. At the same time, by setting the upper limiting protrusion 101 on the first limiting structure 10 and the multiple axially spaced first limiting grooves 201 on the second limiting structure 20, the locking effect of the locking wire 30 is achieved when the limiting protrusion 101 is installed in the first limiting groove 201 at different positions.

[0039] The above description is merely a preferred embodiment of this application. Those skilled in the art should understand that the scope of disclosure in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A wire locking device with adjustable locking force, characterized in that, include: A first limiting structure and a second limiting structure, wherein the end of the first limiting structure is used for the locking line to pass through, and the two ends of the locking line are fixedly connected to anchor nails, and the first limiting structure is axially limited and connected within the second limiting structure; A plurality of first limiting grooves are provided on the side wall of the second limiting structure. The plurality of first limiting grooves are spaced apart along the axial direction of the second limiting structure. A limiting protrusion is provided on the first limiting structure. The limiting protrusion can be selectively provided in the first limiting groove at different positions so that the first limiting structure can move axially to pull and loosen the locking line. When the limiting protrusion is located in the first limiting groove, the limiting protrusion and the first limiting groove are used to restrict the axial movement of the first limiting structure to lock the locking line.

2. The adjustable locking force wire lock according to claim 1, characterized in that, An axial first sliding groove and a plurality of circumferential second sliding grooves are provided on the side wall of the second limiting structure. The plurality of second sliding grooves are respectively connected to the plurality of first limiting grooves, and the first sliding grooves are connected to the plurality of second sliding grooves. The first and second slides are used to allow the limiting protrusion to move within the plurality of first limiting slots.

3. A locking device with adjustable locking force according to claim 2, characterized in that, The first slide groove, the plurality of first limiting grooves, and the plurality of second slide grooves are arranged in two sets, and are respectively arranged opposite to each other on the side wall of the second limiting structure; The two sets of the first limiting groove, the first sliding groove and the second sliding groove are rotationally symmetrical about the center of the second limiting structure.

4. A locking device with adjustable locking force according to claim 2, characterized in that, A first through hole is provided on the side wall of the first limiting structure. The first through hole is used for the insertion of the limiting protrusion. When the limiting protrusion is inserted into the first through hole, both ends of the limiting protrusion extend out of the first limiting structure.

5. A locking device with adjustable locking force according to claim 2, characterized in that, The first limiting groove is located at the top of the second sliding groove.

6. A locking device with adjustable locking force according to claim 1, characterized in that, The first limiting structure includes a folding part and an insertion part. The folding part is fixedly connected to one end of the insertion part and is located on the center line of the insertion part. The radial width of the folded part is smaller than the diameter of the insertion part. The folded part is used for the locking line to pass through. The limiting protrusion is provided on the circumferential sidewall of the insertion part. When the limiting protrusion moves axially, causing the first limiting structure to pull the locking line, part of the locking line extends into and folds into the space between the side wall of the folded part and the side wall of the insertion part.

7. A locking device with adjustable locking force according to claim 2, characterized in that, A second limiting groove is also provided on the side wall of the first limiting structure. The second limiting groove is located at one end of the first sliding groove near the locking line, and the second limiting groove is connected to the first sliding groove. When the limiting protrusion is located in the second limiting groove, the locking line is completely outside the second limiting structure.

8. A locking device with adjustable locking force according to claim 1, characterized in that, A locking spring tube is detachably connected to one end of the second limiting structure away from the locking line. The locking spring tube is circumferentially limited to the second limiting structure to control the rotation of the first limiting structure.

9. A locking device with adjustable locking force according to claim 8, characterized in that, A guide cable is detachably connected to the end of the first limiting structure away from the locking line. The guide cable is used to guide the locking spring tube to be installed with the second limiting structure.

10. A locking device with adjustable locking force according to claim 8, characterized in that, A first insert is provided at the end of the spring tube of the wire lock, and a first slot is provided at the end of the second limiting structure. When the first insert is inserted into the first slot, the spring tube of the wire lock is circumferentially limited and connected to the second limiting structure.

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