A wire locker and a wire locking device

Abstract

This application discloses a wire locking device and a wire locking mechanism, characterized in that it includes a wire locking jacket and a wire locking core. The wire locking jacket has a receiving cavity for accommodating the wire locking core and a threading hole communicating with the receiving cavity. In the embodiments of this application, the above-mentioned wire locking device and wire locking mechanism are used. The wire locking core and the wire locking jacket are interlocked and locked by compression and friction. During the wire locking process, the wire locking core and the wire locking jacket are connected by a positioning mechanism, which makes the connection between the two more secure and ensures the locking stability of the wire. The elastic element buffers the feed of the wire locking device. When the adjustment mechanism is decoupled from the wire locking mechanism, the elastic element pushes the wire locking device to assist it in disengaging, making the disengagement of the wire locking device more convenient and quick. The disengaged wire locking device will remain in the human body to maintain the wire locking effect for a long time.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a thread-locking device and a thread-locking apparatus. Background Technology

[0002] Valvular annulus dilatation is commonly seen in patients with enlarged heart disease. Once the heart enlarges and valve annulus dilatation occurs, it can cause insufficiency of the atrioventricular valve orifice, aortic valve or pulmonary valve orifice, leading to a series of symptoms related to heart failure.

[0003] Annuloplasty is a surgical procedure to correct valvular insufficiency caused by an excessively large valve annulus. It is commonly used to treat mitral or tricuspid regurgitation. Methods include annuloplasty, which involves folding and suturing part of the valve annulus with sutures, and artificial valve annulus made of metal or polymer materials wrapped with synthetic fabric, which is sutured and fixed to the enlarged valve annulus to reduce the circumference of the valve annulus.

[0004] During the valve annulus suture process, multiple anchors are typically inserted into the valve annulus tissue. These anchors are then connected in series with a thread. Finally, by tightening the thread, the anchors are pulled together around a central point. The thread is then knotted, locked, and cut to complete the surgery. Due to space constraints, it is not possible to directly lock and knot the thread. Therefore, a suture locker is needed to lock the thread. However, most existing suture lockers are complex in structure and cumbersome to operate. The suture lock buckle is not easy to detach from the suture locker, which increases the difficulty of suture locking, reduces the suture locking speed, and the suture locking effect of the suture lock buckle is unstable, with the risk of suture locking failure. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a wire locking device and a wire locking mechanism, which solves the problems of unstable wire locking effect and difficulty in detaching the wire from the locking device, thus increasing the difficulty of wire locking.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions.

[0007] This application provides a wire locking device, including a wire locking jacket and a wire locking core;

[0008] The locking sleeve is provided with a receiving cavity for accommodating the locking core rod and a threading hole communicating with the receiving cavity. The receiving cavity is provided with a positioning mechanism for positioning the locking core rod.

[0009] Further specifying, in the above-mentioned wire locking device, the positioning mechanism includes an internal thread disposed on the inner wall of the accommodating cavity and an external thread disposed on the wire locking core and engaging with the internal thread.

[0010] Further specifying the above-mentioned wire locking device, the positioning mechanism includes an annular groove disposed on the inner wall of the accommodating cavity and an insert ring disposed on the wire locking core and cooperating with the annular groove, wherein the insert ring is made of flexible material and is interference-fitted with the accommodating cavity.

[0011] Further specifying, in the above-mentioned wire locking device, the engagement stroke of the internal thread and the external thread is located on the proximal side of the thread hole.

[0012] To further specify, in the above-mentioned wire locking device, a limiting block is provided on the wire locking jacket.

[0013] Further specifying, in the above-mentioned wire locking device, the near end of the wire locking core is provided with a plug interface.

[0014] This application also provides a wire locking device for use with any of the wire locking devices described above, including a handle, a base tube extending from the handle, an outer sleeve disposed at the distal end of the base tube, and an adjustment mechanism for operating the wire locking core.

[0015] The outer sleeve has an opening for the wire locking device to enter and exit, and the outer sleeve is provided with an elastic element for abutting the wire locking device.

[0016] Further specifying, in the aforementioned locking device, the outer sleeve is provided with a transverse groove that allows the limiting block to slide.

[0017] Further specifying, in the aforementioned locking device, one end of the elastic element is fixedly disposed on the inner wall of the outer sleeve on the side away from the handle.

[0018] Further specifying the above-mentioned locking device, the adjusting mechanism includes an adjusting cavity, a locking knob, and a push rod. The adjusting cavity is disposed inside the handle. One end of the locking knob is located inside the adjusting cavity and is threadedly connected to the inner wall of the adjusting cavity, while the other end extends to the outside of the handle. One end of the push rod is fixedly disposed on the side of the locking knob near the base tube, while the other end extends along the inside of the base tube and can be coupled to the locking core rod.

[0019] Further specifying the above-mentioned locking device, the adjusting mechanism includes a push rod and an electric control unit. One end of the push rod is connected to the output end of the electric control unit, and the other end extends along the inside of the base tube and can be coupled to the locking core rod.

[0020] Further specifying, in the above-mentioned locking device, the push rod has a connector for mating with the plug interface on the side away from the handle.

[0021] Furthermore, the aforementioned locking device also includes a take-up and release mechanism for tightening and loosening the thread.

[0022] Further specifying, in the above-mentioned locking device, the take-up and release mechanism includes a take-up adjustment disc rotatably mounted on the handle, and the take-up adjustment disc is provided with a hanging coil.

[0023] The present invention has the following beneficial effects:

[0024] The locking core and the locking jacket are interlocked through compression and friction to lock the wire. During the locking process, the locking core and the locking jacket are connected by a positioning mechanism, which makes the connection between the two more secure and improves the locking stability of the wire.

[0025] The elastic element of the thread-locking device of the present invention buffers the feed of the thread-locking device. When the adjustment mechanism is decoupled from the thread-locking mechanism, the elastic element pushes the thread-locking device to assist it in disengaging, making the disengagement of the thread-locking device more convenient and quick. The disengaged thread-locking device will remain in the human body to maintain the thread-locking effect for a long time. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the specific structure of the wire locking device and wire locking mechanism according to an embodiment of this application;

[0027] Figure 2 This is a cross-sectional structural schematic diagram of the wire locking device and wire locking apparatus according to an embodiment of this application;

[0028] Figure 3 This is an enlarged structural diagram of the interior of the "outer sleeve 220";

[0029] Figure 4 This is a schematic diagram of the specific structure of the "outer sleeve 220";

[0030] Figure 5 This is a schematic diagram of the specific structure of the "locking jacket 310";

[0031] Figure 6 This is a schematic diagram of the specific structure of the "locking core rod 320";

[0032] Figure 7 This is a schematic diagram of the specific structure of "Connector 531";

[0033] Figure 8 This is an enlarged structural diagram of the interior of the "wire take-up and unwinding mechanism 400";

[0034] Figure 9 A cross-sectional view of the "locking wire jacket 310" and "locking wire core 320" when the "positioning mechanism" adopts an embedded solution;

[0035] Figure 10A schematic diagram showing the connection between the "locking wire jacket 310" and the "locking wire core 320" when an embedded solution is adopted for the "positioning mechanism";

[0036] Figure 11 A cross-sectional view of the handle 100 when the adjustment mechanism 500 is an electric mechanism.

[0037] Figure Labels

[0038] Handle-100, Guide mechanism-200, Base tube-210, Outer sleeve-220, Horizontal groove-221, Opening-222, Elastic element-230, Locking sleeve-310, Limiting block-311, Threading hole-312, Internal thread-313, Annular groove-314, Locking core rod-320, External thread-321, Plug-in interface-322, Insert ring-323, Retaining ring-324, Receiving cavity-330, Take-up and release mechanism-400, Take-up adjustment disc-410, Hanging coil-420, Adjustment mechanism-500, Locking knob-510, Adjustment cavity-520, Push rod-530, Plug-in connector-531, Electric push rod-540, Connecting disc-550, Adjustment button-560. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0040] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship. In the description of this invention, the proximal end refers to the end closer to the operator, and the distal end refers to the end farther from the operator; the above definitions are for convenience only and should not be construed as limiting the invention.

[0041] The server provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0042] Example 1:

[0043] like Figures 1-3 , Figure 5 , Figure 6 As shown in the figure, this application provides a wire locking device, including a wire locking jacket 310 and a wire locking core 320. The wire locking jacket 310 is provided with a receiving cavity 330 for accommodating the wire locking core 320. A wire-passing hole 312 communicating with the receiving cavity 330 is provided between the outer circular surfaces of opposite sides of the wire locking jacket 310. During use, a wire-like object is inserted through the opening 222 and exited through the wire-passing hole 312. The wire locking core 320 can be embedded in the wire locking jacket 310 through the receiving cavity 330 and cooperate with the wire locking jacket 310 to clamp the wire-like object passing through the wire-passing hole 312.

[0044] The accommodating cavity 330 is provided with a positioning mechanism for positioning the locking core rod 320. The positioning mechanism includes an internal thread 313 on the inner wall of the end of the accommodating cavity 330 where the locking core rod 320 is installed, and an external thread 321 on the outer circumference of the end of the locking core rod 320. The external thread 321 can engage with the internal thread 313. The external thread 321 and the internal thread 313 are relatively short, and their engagement stroke ends at the side of the thread hole 312 near the internal thread 313 to avoid cutting the wire. In other words, the internal thread 313 is located on the proximal side of the thread hole 312 and does not extend beyond the distal side of the thread hole 312. At the same time, both the locking sleeve 310 and the locking core rod 320 are made of soft plastic material to prevent their edges from cutting the wire.

[0045] The locking core rod 320 has an insertion interface 322 on the end face near the external thread 321, and a limiting block 311 is fixedly provided on the outer circular surface of the locking sleeve 310 at the position corresponding to the thread hole 312.

[0046] In this embodiment, a wire locking device and a wire locking mechanism as described above are used. When the wire locking core rod 320 rotates and embeds into the wire locking outer sleeve 310, a portion of the wire passing through the wire hole 312 is stuck between the wire locking core rod 320 and the wire locking outer sleeve 310 as the wire locking core rod 320 is fed in. Under the squeezing and friction of the wire locking core rod 320 and the wire locking outer sleeve 310, the wire is locked. At this time, the wire locking core rod 320 rotates and connects to the wire locking outer sleeve 310 through the external thread 321 and the internal thread 313, thereby making the connection between the two more secure and ensuring the locking stability of the wire.

[0047] Example 2:

[0048] like Figures 1-4 , Figure 7 , Figure 8As shown in the figure, this application provides a locking device, including a handle 100. The handle 100 is provided with a guide mechanism 200. The guide mechanism 200 includes a base tube 210 fixedly disposed on the handle 100. An outer sleeve 220 is sleeved on the side of the base tube 210 away from the handle 100. An opening 222 is provided through the outer circumference of one side of the outer sleeve 220. The locking device can be movably disposed inside the outer sleeve 220 and can enter and exit the outer sleeve 220 through the opening 222. An elastic element 230 that can abut against the locking device is provided on the inner wall of the outer sleeve 220 away from the handle 100.

[0049] The handle 100 is also provided with an adjustment mechanism 500 that drives the locking core rod 320 to rotate and embed into the locking sleeve 310. The adjustment mechanism 500 includes an adjustment cavity 520 disposed in the handle 100 and whose axis is parallel to the axis of the base tube 210. A locking knob 510 is threadedly connected in the adjustment cavity 520. The end of the locking knob 510 away from the base tube 210 extends to the outside of the handle 100. A push rod 530 is fixedly disposed on the end face of the locking knob 510 near the base tube 210. The end of the push rod 530 away from the locking knob 510 extends into the outer sleeve 220 and is integrally formed with a connector 531. The connector 531 can be embedded in the connector 322. The connector 531 and the connector 322 can adopt a variety of polygonal structures that can transmit torque.

[0050] In this embodiment, due to the above-described structure, when the locking knob 510 is rotated, since it is threadedly connected to the adjustment cavity 520, the locking knob 510 simultaneously drives the push rod 530 to rotate and feed during rotation. When the connector 531 is fed into the connector 322, the locking core rod 320 is driven by the push rod 530 to rotate and feed into the locking sleeve 310 to complete the locking action. The torque is transmitted through the connection between the connector 322 and the connector 531, avoiding the influence of defects caused by connection processes such as welding and gluing on the locking process.

[0051] Example 3:

[0052] In this embodiment, in addition to the structural features of the aforementioned embodiments, it also includes a transverse groove 221 that runs through the end face of the outer sleeve 220 away from the opening 222, and the transverse groove 221 allows the limiting block 311 to slide inside it.

[0053] In this embodiment, due to the above-described structure, when the locking core rod 320 is rotated and fed into the locking sleeve 310, the limiting block 311 and the transverse groove 221 cooperate to prevent the locking sleeve 310 from rotating under the torque of the locking core rod 320 during the locking process, thereby avoiding locking failure caused by the synchronous rotation of the locking core rod 320 and the locking sleeve 310.

[0054] Example 4:

[0055] like Figure 9 , Figure 10 As shown, in this embodiment, the positioning mechanism includes an annular groove 314 disposed on the inner wall of one end of the accommodating cavity 330 where the locking core rod 320 is installed. An insert ring 323 is provided on the outer circumference of one end of the locking core rod 320. The insert ring 323 can be embedded in the annular groove 314. The insert ring 323 is made of flexible rubber and is press-fitted with the inner wall of the accommodating cavity 330. When the locking core rod 320 is inserted into the locking sleeve 310 to a certain position and completes the locking, the insert ring 323 is precisely embedded in the annular groove 314, thereby preventing the locking core rod 320 from detaching from the locking sleeve 310, thus achieving the positioning of the locking core rod 320. Using this method, the locking core rod 320 does not need to be rotated to insert into the locking sleeve 310; it only needs to be directly pushed to achieve the connection between the locking core rod 320 and the locking sleeve 310, thereby improving the speed of connection and separation between the locking core rod 320 and the locking sleeve 310.

[0056] The outer surface of one end of the locking core rod 320 is also provided with a retaining ring 324. When the inserting ring 323 is just inserted into the annular groove 314, the retaining ring 324 just abuts against the corresponding side end face of the locking outer sleeve 310. When it is necessary to separate the locking core rod 320 and the locking outer sleeve 310 in the future, the retaining ring 324 can provide a force point for the locking core rod 320 to separate from the locking outer sleeve 310, and assist the locking core rod 320 to separate from the locking outer sleeve 310.

[0057] Example 5:

[0058] In this embodiment, the adjusting mechanism 500 can also be set to an automatic control mode. For example, in embodiment 2, the rotation of the locking knob 510 can be controlled by a motor, that is, the rotation and feed of the push rod 530 can be controlled by a motor. For example, when using the positioning mechanism in embodiment 4, such as... Figure 11 As shown, an electric push rod 540 is fixedly installed on the inner wall of the adjustment cavity 520 away from the base tube 210. The end of the electric push rod 540 near the base tube 210 is the output end. A connecting plate 550 is fixedly installed on the output end of the electric push rod 540. The push rod 530 is fixedly connected to the end of the connecting plate 550 near the base tube 210. The handle 100 is also provided with a control button 560 for controlling the electric push rod 540.

[0059] In this embodiment, due to the above-described structure, the extension and retraction of the electric push rod 540 is controlled by the control button 560. When the electric push rod 540 extends and drives the connecting plate 550 to move closer to the base tube 210, the push rod 530 will drive the locking core rod 320 to insert into the locking sleeve 310. At this time, the cooperation between the plug 531 and the plug interface 322 is only used to transmit the thrust, and does not need to transmit the torque. The locking core rod 320 is directly inserted into the locking sleeve 310 without rotation, thus making it suitable for the positioning mechanism used in Embodiment 4. The above-described electric adjustment structure 500 can reduce the user's operation steps, thereby improving the locking efficiency.

[0060] Example 6:

[0061] like Figure 1 , Figure 2 , Figure 8 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the handle 100 is also provided with a take-up and release mechanism 400 for tightening and loosening the thread-like object passing through the thread hole 312. The take-up and release mechanism 400 includes a take-up adjustment disc 410 rotatably disposed on the handle 100. A hook coil 420 is fixedly disposed on the take-up adjustment disc 410. The thread-like object passing through the thread hole 312 passes through the transverse groove 221 and is fixedly disposed on the hook coil 420. The thread-like object fixed on the hook coil 420 can rotate and wind around the take-up adjustment disc 410 as the take-up adjustment disc 410 rotates.

[0062] In this embodiment, due to the above-mentioned structure, the tightness of the thread can be directly adjusted by rotating the thread adjustment disc 410, which facilitates flexible adjustment of the tension of the thread during the operation. After the thread is locked, the thread passing through the transverse groove 221 is cut off. Rotating the locking knob 510 decouples the push rod 530 from the thread locking core rod 320. The elastic potential energy of the elastic element 230 is released, pushing the thread locker to the opening 222 position, making it convenient for the user to remove the thread locker from the outer sleeve 220. The removed thread locker will remain in the human body to maintain the thread locking effect.

[0063] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0064] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A wire-locking device for use with a wire-locking device, characterized in that: The wire locking device includes a wire locking outer sleeve and a wire locking core rod; the wire locking outer sleeve has a receiving cavity for accommodating the wire locking core rod and a threading hole communicating with the receiving cavity; the receiving cavity is provided with a positioning mechanism for positioning the wire locking core rod; the positioning mechanism includes an internal thread provided on the inner wall of the receiving cavity and an external thread provided on the wire locking core rod and engaging with the internal thread; the wire locking outer sleeve is provided with a limiting block; the proximal end of the wire locking core rod is provided with an insertion interface; the engagement stroke of the internal thread and the external thread is located on the proximal side of the threading hole; The locking device includes a handle, a base tube extending from the handle, an outer sleeve disposed at the distal end of the base tube, and an adjustment mechanism for operating the locking core rod; the outer sleeve has an opening for the locking device to enter and exit, and an elastic element for abutting the locking device is disposed inside the outer sleeve; one end of the elastic element is fixedly disposed on the inner wall of the outer sleeve away from the handle; the outer sleeve has a transverse groove for the sliding of the limiting block; The elastic element of the locking device buffers the feed of the locking device. When the adjusting mechanism is decoupled from the locking device, the elastic element pushes the locking device to assist it in disengaging, making it easier for the locking device to disengage.

2. The locking device according to claim 1, characterized in that: The adjustment mechanism includes an adjustment cavity, a locking knob, and a push rod. The adjustment cavity is located inside the handle. One end of the locking knob is located inside the adjustment cavity and is threaded to the inner wall of the adjustment cavity, while the other end extends to the outside of the handle. One end of the push rod is fixedly located on the side of the locking knob near the base tube, while the other end extends along the inside of the base tube and can be coupled to the locking core rod.

3. The locking device according to claim 1, characterized in that: The adjustment mechanism includes a push rod and an electric control unit. One end of the push rod is connected to the output end of the electric control unit, and the other end extends along the inside of the base tube and can be coupled to the locking core rod.

4. The locking device according to any one of claims 2 or 3, characterized in that: The push rod has a connector on the side away from the handle for mating with the plug interface.

5. The locking device according to claim 1, characterized in that, It also includes a take-up adjustment disc that is rotatably mounted on the handle, and the take-up adjustment disc is provided with a hanging coil.

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