Medical locking components

Abstract

The present invention provides a medical locking assembly, comprising a main body, a connecting shaft, and a wire pressing member, wherein the wire pressing member is rotatably connected to the main body around the connecting shaft. The wire pressing member is provided with a wire pressing end and a driving end, which are respectively located on both sides of the connecting shaft. The driving end can be actuated to rotate around the connecting shaft, thereby driving the wire pressing end to rotate toward the main body, so as to press the medical wire located between the wire pressing end and the main body onto the main body. The medical locking assembly not only ensures the effective driving of the wire pressing member, but also further ensures the effectiveness of the locking wire, thereby helping to improve the surgical effect.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a medical locking assembly for locking a medical wire. Background Art

[0002] The heart is the driving organ of blood circulation, and it relies on rhythmic beating to push blood to continuously flow through the blood vessels. Heart valves such as the mitral valve and tricuspid valve serve as one-way valves between the atria and ventricles inside the heart. They control the directional and efficient flow of blood from the atria to the ventricles, while preventing blood from flowing back from the ventricles to the atria. When the atria contract, the heart valves open and blood flows from the atria to the ventricles. When the ventricles contract, the heart valves close to prevent blood from flowing back from the ventricles to the atria; however, if the leaflets, natural chordae tendineae, or valve rings of the heart valves and other related structures are diseased, the heart valves will not be able to close completely, which will cause blood to flow back to the atria and trigger a series of pathological or physiological heart valve diseases.

[0003] At present, the repair technology of heart valve disease includes medical surgery and minimally invasive interventional surgery. In such surgeries, it is often necessary to lock and fix the sutures in the patient's body. The prior art discloses a locking assembly for locking sutures. The locking assembly includes a base and a locking piece. The locking piece can be actuated by a locking actuator and rotated relative to the base to press the sutures onto the base to complete the locking. Since the locking assembly needs to stay inside the heart for a long time to keep the sutures continuously locked, the volume of the locking assembly is usually small. At the same time, since the locking actuator is very close to the suture, it is very easy to cause the suture and the locking actuator to interfere with each other. Not only can the effective driving of the locking piece not be guaranteed, but it may also further lead to the risk of locking failure. Summary of the Invention

[0004] The object of the present invention is to provide a medical locking assembly, which can not only ensure the effective driving of the wire pressing member, but also further ensure the effectiveness of the wire locking, thereby helping to improve the surgical effect.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a medical locking assembly, comprising: a main body, a connecting shaft, and a wire pressing member, wherein the wire pressing member is rotatably connected to the main body around the connecting shaft, and the wire pressing member is provided with a wire pressing end and a driving end, and the wire pressing end and the driving end are respectively located on both sides of the connecting shaft; wherein the driving end can be actuated to rotate around the connecting shaft, thereby driving the wire pressing end to rotate toward the direction of the main body, so as to press the medical wire located between the wire pressing end and the main body onto the main body.

[0006] The medical locking assembly provided by the present invention achieves locking by rotating the wire pressing member relative to the main body to press the medical wire against the main body. Compared with the prior art, the present invention isolates the wire pressing end and the driving end from each other to prevent interference between the medical wire at the wire pressing end and the actuator at the driving end. This not only ensures the effective driving of the wire pressing member, but also further ensures the effectiveness of the wire locking, thereby improving the surgical effect. At the same time, the present invention achieves wire locking through the cooperation of two independent components, the main body and the wire pressing member. Therefore, the structure is simple, and the processing and assembly costs are low, which further promotes the promotion and application of medical locking assemblies. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0008] Figure 1 Shown are three-dimensional schematic diagrams of medical locking assemblies in some embodiments.

[0009] Figure 2 Shown Figure 1 A three-dimensional schematic diagram of a traditional Chinese medicine locking assembly from another angle.

[0010] Figure 3-4 Shown Figure 1 Schematic diagram of the main body.

[0011] Figure 5 Another structural schematic diagram of the main body is shown.

[0012] Figure 6-8 Shown Figure 1 Schematic diagram of the structure of medium-voltage line components.

[0013] Figure 9-10 Shown Figure 1 A three-dimensional schematic diagram and a side cross-sectional view of a traditional Chinese medicine locking assembly in its initial state.

[0014] Figure 11-12 Shows side cross-sectional views of medical locking assemblies of different structures in a compression state.

[0015] Figure 13-17 A three-dimensional schematic diagram of the cooperation between the wire pressing parts and the main body parts with different structures in other embodiments is shown.

[0016] Figure 18 Another structural schematic diagram of the wire pressing member is shown.

[0017] Figure 19-20A three-dimensional schematic diagram of a medical locking assembly with different anchoring members is shown.

[0018] Figure 21 A schematic perspective view of a medical locking system in some embodiments is shown.

[0019] Figure 22 Shows the Figure 21 Schematic diagram of the medical locking system entering the mitral valve intraventricularly via a transcatheter approach.

[0020] Figure 23 A schematic diagram showing the anchoring of a medical locking assembly into ventricular tissue via a transcatheter approach is shown.

[0021] Figure 24 A schematic diagram showing the completion of the locking wire of the medical locking assembly is shown.

[0022] Figure 25 The figure shows the state of the medical locking component after implantation.

[0023] Figures 26-28 The medical locking system is used to lock the Figure 1 The medical locking assembly is shown being delivered to cardiac tissue to complete an edge-to-edge repair.

[0024] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In addition, the following descriptions of the embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention may be implemented. Directional terms mentioned in the present invention, such as "upper," "lower," "front," "back," "left," "right," "inner," "outer," and "side," are merely references to the directions in the accompanying drawings. Therefore, the directional terms used are intended to better and more clearly illustrate and understand the present invention, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0027] It should be noted that, to more clearly describe the medical locking assembly provided by the present invention, the limiting terms "proximal end" and "distal end" used in this specification are commonly used in the field of interventional medicine. Specifically, "distal end" refers to the end away from the operator during a surgical procedure, while "proximal end" refers to the end closer to the operator during a surgical procedure. The axial direction is defined as the direction of the central axis of rotation of an object such as a cylinder or tube; the circumferential direction is the direction around the axis of the object such as a cylinder or tube (perpendicular to the axis and also perpendicular to the cross-sectional radius); and the radial direction is the direction along the diameter or radius. It is worth noting that the term "end" as used in terms such as "proximal end," "distal end," "one end," "other end," "first end," "second end," "initial end," "terminal end," "both ends," "free end," "upper end," and "lower end" is not limited to the tip, endpoint, or end face, but also includes a portion extending an axial distance and / or radial distance from the tip, endpoint, or end face on the component to which the tip, endpoint, or end face belongs. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The conventional terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not to be construed as limiting the present invention.

[0028] The present invention provides a medical locking assembly 20 for locking one or more medical wires 30 to a target position in human tissue to prevent problems such as heart dysfunction caused by heart valve disease. Figure 1 and Figure 2 A schematic perspective view of a medical locking assembly 20 in some embodiments is shown, wherein the medical locking assembly 20 includes a main body 21, a wire pressing member 22, and a connecting shaft 23, wherein the wire pressing member 22 is rotatably connected to the main body 21 about the connecting shaft 23. Specifically, the wire pressing member 22 is provided with a wire pressing end 221 and a driving end 222, wherein the wire pressing end 221 and the driving end 222 are respectively located on either side of the connecting shaft 23. Under the action of an external force, the driving end 222 can be actuated, for example, by an actuator 40 to rotate about the connecting shaft 23, thereby driving the wire pressing end 221 to rotate toward the main body 21, thereby pressing the medical wire 30 located between the wire pressing end 221 and the main body 21 onto the main body 21 to complete the wire locking. In some embodiments, the connecting shaft 23 can be an independent connecting shaft component for connecting the main body 21 and the wire pressing member 22, or it can be a connecting shaft protruding from the main body 21 or the wire pressing member 22. The connecting shaft 23 has a central axis X, which extends along the radial direction of the medical locking component 20 , wherein the radial direction is perpendicular to the direction in which the medical locking component 20 is axially advanced toward the distal end.

[0029] Given that the medical locking assembly 20 needs to remain inside the human body for a long time to maintain the continuous locking of the medical wire 30, the volume of the medical locking assembly 20 is generally small. Therefore, in order to ensure the effective driving of the medical locking assembly 20 during the wire locking process, the wire pressing end 221 and the driving end 222 that drives the wire pressing end 221 to rotate need to be isolated from each other, thereby ensuring that the medical wire 30 and the actuator 40 that actuates the driving end 222 are isolated from each other to avoid the problem of mutual interference caused by being too close. In other words, the medical locking assembly 20 provided by the present invention not only ensures the effective driving of the wire pressing member 22, but also further ensures the effectiveness of the wire locking, thereby helping to improve the surgical effect. At the same time, the medical locking assembly 20 of the present invention only requires two independent components, the main body 21 and the wire pressing member 22, to cooperate with each other to achieve the wire locking. Therefore, the structure is simple, the processing cost and assembly cost are low, and it is further conducive to the promotion and application of the medical locking assembly 20.

[0030] In some embodiments, the actuator 40 can engage with the drive end 222 of the wire crimping member 22 and axially actuate the drive end 222 to rotate. Specifically, the drive end 222 has a coupling portion 2220, to which the distal end of the actuator 40 is removably coupled, and the proximal end of the actuator 40 extends outside the body for manipulation by an operator. Under manipulation by the operator, the proximal end of the actuator 40 is axially actuated distally or proximally, and the drive end 222 can generate torque under the axial actuation of the actuator 40, causing it to rotate about the connecting shaft 23.

[0031] Figure 3-20 Shows a schematic diagram of the structure of the medical locking assembly and its various components. Please also refer to Figure 2-5 The main body 21 includes a main end 211 and a support end 212 extending from the main end 211. The main end 211 is used to cooperate with the wire pressing end 221 of the wire pressing member 22 to compress the medical wire 30. The wire pressing member 22 is rotatably connected to the support end 212. In some embodiments, the main end 211 is provided with a first wire passing hole 2110 having a first axial centerline Y1, and the wire pressing end 221 is provided with a second wire passing hole 2210 having a second axial centerline Y2. In the initial state of the medical locking assembly 20, the first axial centerline Y1 is aligned with the second axial centerline Y2, so that the medical wire 30 can pass through the first wire passing hole 2110 and the second wire passing hole 2210 in a horizontal direction and then be led out of the medical locking assembly 20, thereby enabling the operator to quickly lead the medical wire 30. Therefore, when the medical cable 30 needs to be introduced into the medical locking assembly 20, the free end of the medical cable 30 can quickly enter through the first cable hole 2110 and the second cable hole 2210 and be positioned between the cable pressing end 221 and the main body end 211. The first axial centerline Y1 and the second axial centerline Y2 are both perpendicular to the central axis X of the connecting shaft 23.

[0032] Specifically, if Figure 3-5 As shown, the main body end 211 is generally L-shaped, including a cylindrical body 2111 extending axially and a bearing portion 2112 extending radially from one end of the body 2111. The bearing portion 2112 is generally square, and the first wire-passing hole 2110 is provided at a position of the bearing portion 2112 away from the body 2111 and axially passes through the bearing portion 2112. The first wire-passing hole 2110 has a first axial centerline Y1, which is arranged parallel to the body 2111 and is located above the body 2111 and the central axis X. In some embodiments, the diameter of the first wire-passing hole 2110 is larger than the diameter of the medical wire 30 to facilitate the operator to quickly introduce the medical wire 30 into the first wire-passing hole 2110. At this time, the medical wire 30 can slide freely in the first wire-passing hole 2110.

[0033] Furthermore, a substantially L-shaped smooth inner surface is formed between the bearing portion 2112 and the body 2111, and a bearing surface 211a extending in at least two directions is provided on the smooth inner surface, and the wire pressing end 221 can press the medical wire 30 onto the bearing surface 211a. In some embodiments, such as Figure 4 As shown, the bearing surface 211a includes a first bearing surface 2112a extending along a first direction and a second bearing surface 2111a extending from the first bearing surface 2112a in a second direction. The first bearing surface 2112a and the second bearing surface 2111a form a generally L-shaped surface, i.e., the bearing surface 211a extends in an L-shape. It is understood that the first bearing surface 2112a is a partially curved surface on the inner side of the bearing portion 2112 and extends generally in the radial direction. The first bearing surface 2112a is located below the first wire hole 2110 and forms an angle with the first wire hole 2110. In the present invention, this angle is preferably 45 degrees. The second bearing surface 2111a is a portion of the surface of the body 2111 that is connected to the first bearing surface 2112a and is close to the bearing portion 2112. The second bearing surface 2111a extends generally in the axial direction. In some embodiments, an acute angle is formed between the first bearing surface 2112a and the second bearing surface 2111a. Given that the smaller the acute angle, the more inclined the bearing portion 2112 is relative to the body 2111, which in turn results in a larger axial dimension of the bearing portion 2112; and, when the wire pressing end 221 presses the medical wire 30 against the bearing surface 211a, if the acute angle is too small, it is more likely to cause the risk of the medical wire 30 breaking; therefore, the acute angle ranges from 30 degrees to 90 degrees, and the present invention preferably selects 60 degrees. In other embodiments, such as Figure 5As shown, a protrusion 2115 is provided on the second bearing surface 2111a. A gap is formed between the protrusion 2115 and the bearing portion 2112 to accommodate at least a portion of the wire pressing end 221. Specifically, the bearing surface 211a further includes a third bearing surface 2115a extending from the second bearing surface 2111a in a third direction. The third bearing surface 2115a is the surface on the protrusion 2115 opposite the first bearing surface 2112a and connected to the second bearing surface 2111a. In this case, the first bearing surface 2112a, the second bearing surface 2111a, and the third bearing surface 2115a form a generally U-shaped surface, that is, the bearing surface 211a extends in a U-shape. In some embodiments, the angle between the third bearing surface 2115a and the second bearing surface 2111a is an obtuse angle. In the present invention, the obtuse angle is preferably 120 degrees.

[0034] Of course, in order to ensure that the main body 21 and the wire pressing member 22 can further maintain the long-term wire pressing state of the medical locking assembly 20 after compressing the medical wire 30, thereby ensuring that the medical locking assembly 20 can remain in the patient's body for a long time and continue to maintain its effectiveness, the main body 21 and the wire pressing member 22 are capable of meshing and cooperating. Specifically, the smooth inner surface also includes an intersection surface 211b extending from the second bearing surface 2111a to the support end 212. The intersection surface 211b is provided with a plurality of first meshing teeth 2113 for meshing with the wire pressing member 22 to avoid the risk of the medical wire 30 loosening due to the failure of the locking between the main body 21 and the wire pressing member 22. In some embodiments, the intersecting surface 211b and the second bearing surface 2111a form a stepped surface, with the second bearing surface 2111a being higher than the intersecting surface 211b. This ensures effective compression of the main body 21 and the wire pressing member 22, while also ensuring effective self-locking between the two, thereby achieving long-term locking of the medical thread 30 by the medical locking assembly 20. In some embodiments, the first engaging teeth 2113 are ratchet teeth, and the main body 21 and the wire pressing member 22 engage in a ratchet manner to achieve unidirectional stepped rotation, thereby limiting the reverse rotation of the wire pressing member 22 away from the main body end 211, further effectively preventing the risk of locking failure of the medical locking assembly 20.

[0035] Furthermore, to achieve a rotational connection with the wire crimping member 22, the support end 212 has a first connecting portion 2120 disposed about the central axis X for pivoting with the wire crimping member 22. In some embodiments, the first connecting portion 2120 is a first axial hole, and the wire crimping member 22 is pivotally connected to the first axial hole 2120 via a separate connecting shaft 23 in the medical locking assembly 20 or a connecting shaft 23 protruding from the wire crimping member 22 and disposed about the central axis X, thereby enabling rotation of the wire crimping member 22 relative to the main body 21. The support end 212 extends from an end of the body 2111 away from the supporting portion 2112, such as from the proximal end of the body 2111. In this case, the supporting portion 2112 is disposed at the distal end of the body 2111. Specifically, the support end 212 includes a main portion 2121 connected to the body 2111 and a support portion 2122 extending from the main portion 2121 toward the support portion 2112. A first axial hole 2120 is defined in the support portion 2122 around the central axis X. In some embodiments, the main portion 2121 extends circumferentially from the proximal end of the body 2111 to form a disc-shaped shape. Two spaced support portions 2122 are formed axially from the disc-shaped main portion 2121 toward the support portion 2112. The two first axial holes 2120 are symmetrically defined in the two support portions 2122 along the central axis X. The two support portions 2122 are located on the same side of the body 2111 as the support portion 2112, for example, above the body 2111. The two support portions 2122 are symmetrically disposed on opposite sides of the body 2111. In other embodiments, the first connecting portion 2120 is a connecting shaft 23 having a central axis X and relatively protruding on the inner side of each supporting portion 2122. The connecting shaft 23 is connected to the second shaft hole 2230 of the pressing member 22 (see FIG. Figure 6 ) are pivotally connected to achieve a rotational connection between the two.

[0036] In some embodiments, to prevent the actuator 40 from affecting the actuating force applied to the wire pressing member 22 due to changes in its trajectory during actuation, the support end 212 is further provided with an axially extending traction channel 2123. Thus, when the distal end of the actuator 40 engages the engagement portion 2220 of the wire pressing member 22, the proximal end of the actuator 40 can freely pass through the traction channel 2123 and out of the medical locking assembly 20 to the outside of the body. The provision of the traction channel 2123 limits the actuation direction of the actuator 40, enabling it to better apply force to the wire pressing member 22. Specifically, the traction channel 2123 is provided in the disc-shaped main body 2121 and forms a closed through-hole. The traction channel 2123 and the driving end 222 of the wire pressing member 22 are located on the same side of the main body end 211, allowing the actuator 40 to extend axially in a substantially horizontal direction, thereby ensuring that the actuator 40 can axially actuate the driving end 222 to generate torque. In some embodiments, the inner surface of the traction channel 2123 may be a curved surface to reduce wear on the medical line 30 and further ensure that the proximal end of the actuator 40 can smoothly extend out of the body for manipulation by the operator. Of course, in other embodiments, the traction channel 2123 may be an open structure such as a U-shaped groove formed from bottom to top and inwardly concave below the disc-shaped main body 2121, for the proximal end of the actuator 40 to pass through, thereby limiting the actuation direction of the actuator 40.

[0037] Furthermore, the disc-shaped main body 2121 is also provided with a driver 50 (see Figure 21 ) removably engages with the first release portion 2124 to achieve a detachable connection with the driver 50. Specifically, the distal end of the driver 50 is removably engaged with the first release portion 2124, while the proximal end of the driver 50 extends outside the body for manipulation by an operator. Thus, after the medical locking assembly 20 is delivered and locked inside the human body, the proximal end of the driver 50 is actuated to drive the driver 50 to release from the first release portion 2124. At this point, the released medical locking assembly 20 will remain inside the human body for a long time, maintaining the long-term lock of the medical wire 30. The first release portion 2124 is located in the central area of ​​the main body 2121, and the traction channel 2123 is located adjacent to the first release portion 2124 and on a side away from the support portion 2122. In some embodiments, the first release portion 2124 is an internal thread extending axially inward from the main body 2121. In other embodiments, the first release portion 2124 is an S-shaped buckle, an angled buckle, or the like, protruding from the main body 2121 and extending proximally.

[0038] Please also see Figure 6-17As shown, the wire pressing member 22 is a lever structure, including a wire pressing end 221, a driving end 222, and a connecting end 223 connecting the wire pressing end 221 and the driving end 222. The wire pressing end 221 and the driving end 222 are respectively arranged on opposite sides of the connecting end 223. Specifically, the second wire passing hole 2210 is opened in the approximate center area of ​​the wire pressing end 221 and axially passes through the wire pressing end 221. The second wire passing hole 2210 has a second axial center line Y2, and the second axial center line Y2 is located above the connecting shaft 23. Therefore, after the medical wire 30 enters the gap between the main body end 211 and the wire pressing end 221 from the first wire passing hole 2110, the medical wire 30 will further axially pass through the second wire passing hole 2210 in the same direction to pass through the medical locking assembly 20 horizontally as a whole, thereby completing the wire guiding operation of the medical wire 30 in the initial state. In some embodiments, the diameter of the second wire hole 2210 is larger than the diameter of the medical wire 30, so that the operator can quickly introduce the medical wire 30 into the first wire hole 2110 and the second wire hole 2210. At this time, the medical wire 30 can slide freely in the first wire hole 2110 and the second wire hole 2210.

[0039] Furthermore, the wire pressing end 221 also includes a wire pressing surface 2211, which is used to cooperate well with the bearing surface 211a of the main body 21 and press the medical wire 30 against the bearing surface 211a to form a lock extending in multiple directions. To ensure the effective length of the locked medical wire 30, in some embodiments, the wire pressing surface 2211 includes a first wire pressing surface 2211a extending along a first direction and a second wire pressing surface 2211b extending from the first wire pressing surface 2211a to a second direction. The first wire pressing surface 2211a can cooperate with the first bearing surface 2112a, and the second wire pressing surface 2211b can cooperate with the second bearing surface 2111a, thereby locking the medical wire 30 in two different directions to improve the locking force of the medical locking assembly 20 and reduce the risk of the medical wire 30 detaching. The pressing surface 2211 is at least one end surface of the pressing end 221. The first pressing surface 2211a is substantially parallel to the second axial centerline Y2 of the second wire-passing hole 2210. The second pressing surface 2211b extends from the first pressing surface 2211a toward the second wire-passing hole 2210 and is adjacent to the supporting surface 211a. The first pressing surface 2211a and the second pressing surface 2211b form a generally L-shaped surface. Specifically, the pressing surface 2211 extends in an L-shape, thereby effectively cooperating with the L-shaped supporting surface 211a and forming a generally L-shaped locking length to provide sufficient locking force.

[0040] Of course, in other embodiments, the wire pressing end 221 further includes a third wire pressing surface 2211c extending from the second wire pressing surface 2211b in a third direction, so as to further cooperate with the third bearing surface 2115a of the main body 21, thereby locking the medical wire 30 in three different directions to further improve the effectiveness of the locking force and prevent the medical wire 30 from loosening. The third wire pressing surface 2211c is the inner surface of the second wire passing hole 2210 connected to the second wire pressing surface 2211b. In this case, the first wire pressing surface 2211a, the second wire pressing surface 2211b, and the third wire pressing surface 2211c form a generally U-shaped surface, that is, the wire pressing surface 2211 extends in a U-shape, so as to cooperate well with the U-shaped bearing surface 211a and form a generally U-shaped locking length, thereby further improving the locking force.

[0041] It is understood that to ensure that the medical wire 30 is evenly locked between the bearing surface 211a and the pressing surface 2211, the first bearing surface 2112a and the first pressing surface 2211a are both designed as curved surfaces, forming concentric circles around the central axis X of the connecting shaft 23. When the medical locking assembly 20 is in the pressing state, a uniform gap is formed between the first bearing surface 2112a and the first pressing surface 2211a. In other words, the gaps between the first bearing surface 2112a and the first pressing surface 2211a are equal and uniform at all points, allowing the medical wire 30 to be compressed, deformed, and evenly locked between the first bearing surface 2112a and the first pressing surface 2211a. This means that the locking trajectory of the medical wire 30 is uniform. The maximum locking force on the medical wire 30 now originates from any position along the locking trajectory, significantly reducing the risk of the medical wire 30 breaking, further ensuring the effectiveness of the surgery.

[0042] Furthermore, the driving end 222 includes two rod bodies 2221 spaced apart from each other, wherein the rod bodies 2221 can be as follows: Figure 6 The straight rod shown can also be Figure 13 The bent rod shown in the figure can strengthen the bending stress of the rod body 2221 to reduce the risk of the rod body 2221 breaking. The joint 2220 is set between the two rod bodies 2221 and away from the connecting shaft 23. In some embodiments, the distance from the joint 2220 to the central axis X of the connecting shaft 23 is greater than the distance from the pressing surface 2211 to the central axis X. Figure 7As shown, for example, the distance between the wire pressing surface 2211 and the central axis X is L1, and the required compression force F1 required to compress the medical wire 30 by the wire pressing surface 2211 is F1. The distance between the joint 2220 and the central axis X is L2, and the actuating force applied by the actuator 40 to the joint 2220 is F2. Based on the principle of leverage, the relationship between the four should satisfy the formula F1*L1=F2*L2. Therefore, when L2>L1, the wire pressing member 22 acts as a force-saving lever. In this case, a smaller actuating force F2 can generate a larger compression force F1 to secure the medical wire 30.

[0043] In some embodiments, the joint 2220 has a smooth outer surface, and the distal end of the actuator 40 wraps around the outer surface to achieve removable connection between the two. The proximal end of the actuator 40 passes through the traction channel 2123 at the proximal end of the main body 21 and then extends out of the body. The joint 2220 can be a winding shaft with a closed outer surface, and the winding shaft 2220 is connected between the two rods 2221. In some embodiments, such as Figure 6 As shown, the distal end of each rod body 2221 is provided with a third axial hole 2222, and the winding shaft 2220 passes through the two third axial holes 2222 to be connected between the two rod bodies 2221. Of course, the two ends of the winding shaft 2220 can be fixed to the two third axial holes 2222 by threaded connection, welding or gluing to avoid the risk of the winding shaft 2220 being separated from the two third axial holes 2222 and causing the driving end 222 to fail to actuate. Based on reliability considerations, welding is preferred in the present invention. Of course, in other embodiments, such as Figure 13 As shown, the rod body 2221 does not need to be provided with an axial hole, and the winding shaft 2220 is an extended shaft extending between the two rod bodies 2221. It is understood that the winding shaft 2220 can have a closed cross-section of various shapes such as square, circular, polygonal, etc. In order to allow the actuator 40 to be smoothly withdrawn from the winding shaft 2220, the present invention preferably has a circular cross-section.

[0044] In view of the fact that the actuator 40 needs to be wound back to the joint 2220, the actuator 40 can be a flexible traction member, for example, it can be a metal wire such as stainless steel wire, nickel titanium wire, tungsten wire, etc., it can be a metal rope such as stainless steel wire rope, tungsten wire rope, nickel titanium wire rope, etc., or it can be a polymer rope or line such as PET suture, PTFE rope or ultra-high molecular weight polyethylene suture. Specifically, the flexible traction member 40 is wound back to the smooth winding shaft 2220 in an open loop. However, it is very easy to cause the flexible traction member 40 to slide freely on the winding shaft 2220, thereby affecting the actuation force F2 applied to the wire pressing member 22. Therefore, in some embodiments, such as Figure 13As shown, the diameter of the winding shaft 2220 can be set to gradually increase from the middle to both ends, so as to keep the flexible traction member 40 in the middle position of the winding shaft 2220 for a long time, thereby ensuring the stability of the actuating force F2, and at the same time further reducing the risk of actuation failure caused by the flexible traction member 40 detaching from the outer surface of the winding shaft 2220.

[0045] In order to further avoid the risk of the flexible traction member 40 being separated from the outer surface of the winding shaft 2220 and causing actuation failure, as shown in FIG. Figure 6 and Figure 13 As shown, each rod 2221 is provided with a protrusion 2223 on one side adjacent to the winding shaft 2220 to ensure that the distal end of the flexible traction member 40 can always be kept on the winding shaft 2220, thereby reducing the defect of the flexible traction member 40 being detached from the distal end of the rod 2221 and being wound back onto at least one rod 2221. In some embodiments, as Figure 6 As shown, the protrusion 2223 is arc-shaped and extends axially outward from the distal end of each rod body 2221. The arc-shaped protrusion 2223 is disposed away from the joint 2220 to prevent the flexible traction member 40 from being separated from the winding shaft 2220 from the distal end of the rod body 2221 even when it is in a loose state. In other embodiments, such as Figure 13 As shown, the arc-shaped protrusion 2223 can be formed by extending radially outward from the distal end of each rod body 2221, so that the distal cross-section of the rod body 2221 is significantly larger than the diameter of the winding shaft 2220, thereby preventing the flexible pulling member 40 from detaching from the winding shaft 2220 from the distal end of the rod body 2221.

[0046] Of course, in order to completely prevent the distal end of the flexible traction member 40 from being separated from the winding shaft 2220, in some embodiments, such as Figure 15 As shown, the driving end 222 also has an anti-slip portion 2224, which is arranged between the two rod bodies 2221 and adjacent to the winding shaft 2220. A gap S1 is formed between the anti-slip portion 2224 and the winding shaft 2220, so that the flexible traction member 40 can further pass through the gap S1 when it rewinds around the outer surface of the winding shaft 2220. The gap S1 is larger than the diameter of the flexible traction member 40, so that the flexible traction member 40 can move freely within the gap S1. In other embodiments, such as Figure 16As shown, the winding shaft 2220 is provided with two traction holes 2225 extending axially through its outer surface. The distal end of the flexible traction member 40 is looped around the two traction holes 2225 in an open loop. Specifically, after the flexible traction member 40 loops around the two traction holes 2225 to form a removable loop, the two free ends of the flexible traction member 40 extend and pass through the body to form an open loop. The two free ends, i.e., the proximal ends, of the flexible traction member 40 can be manipulated by an operator to rotate the wire pressing member 22. After the proximal ends of the flexible traction member 40 are pulled and the wire pressing member 22 is driven to complete the thread locking, the flexible traction member 40 can be disengaged from the two traction holes 2225 of the winding shaft 2220 by pulling one of the proximal ends. The flexible traction member 40 can then be withdrawn from the heart through the traction channel 2123 at the proximal end of the main body 21. In some embodiments, two traction holes 2225 are symmetrically arranged side by side on the winding shaft 2220 along its axis and extend through the outer surface of the winding shaft 2220 to provide a more balanced actuation force F2. The two traction holes 2225 have smooth, circular inner surfaces to ensure that the flexible traction member 40 can move freely and smoothly within the traction holes 2225 without damage.

[0047] In other embodiments, Figure 17 As shown, the actuator 40 is a relatively rigid traction rod. A first external thread 400 is provided at the distal end of the traction rod 40. The winding shaft 2220 is provided with an axially extending internally threaded hole 2226. The traction rod 40 is threadedly connected to the internally threaded hole 2226 via the first external thread 400, achieving removable engagement between the two. In some embodiments, the internally threaded hole 2226 is located in the middle region of the winding shaft 2220 and extends through the outer surface of the winding shaft 2220, thereby facilitating a more balanced actuation force F2. It is understood that the traction rod 40 can be made of a relatively rigid polymer tubing or rod, such as PI tubing or PEEK tubing.

[0048] Furthermore, the connecting end 223 is roughly cylindrical, and the wire pressing end 221 is protruded from one end of the cylindrical surface of the connecting end 223; the two rod bodies 2221 of the driving end 222 are protruded side by side from the other end of the cylindrical surface of the connecting end 223 and are spaced apart, and form a accommodating space S with the joint 2220. Among them, after the body 2111 of the main body 21 is accommodated in the accommodating space S, the bearing portion 2112 and the supporting end 212 of the main body 21 will be positioned on both sides of the wire pressing member 22 respectively. At the same time, the flexible traction member 40 further penetrates into or out of the accommodating space S, so that the distal end of the flexible traction member 40 is wrapped around to the outer surface of the joint 2220. In some embodiments, in order to avoid interference between the wire pressing member 22 and the main body 21 during rotation, such as Figure 6 As shown, an acute angle α is formed between the pressing end 221 and the driving end 222. Thus, when the medical locking assembly 20 is in the initial state, as shown in FIG. Figure 10As shown, the joint 2220 is provided away from the main body portion 2121 of the support end 212, and a movable distance L3 is formed between the joint 2220 and the main body portion 2121. Pull the proximal end of the flexible traction member 40 to axially actuating the drive end 222 proximally, for example, actuating in the direction towards the support end 212, and switch the medical locking component 20 to Figure 11 or the wire pressing state shown in 12. At this time, the medical wire 30 is pressed between the bearing surface 211a and the wire pressing surface 2211 to form a wire locking length extending substantially in an L shape or a U shape, and the drive end 222 rotates to a position adjacent to the main body portion 2121. Among them, the axial distance that the joint 2220 moves is L4 (not shown in the figure), and L4 < L3, so as to avoid the risk of wire locking failure caused by the interference of the drive end 222 by the main body portion 2121.

[0049] In some embodiments, the first engaging teeth 2113 of the main body member 21 are engaged with the connection end 233. Specifically, the connection end 223 can be provided with a plurality of second engaging teeth 2231 on the outer periphery of the cylindrical surface to engage with the first engaging teeth 2113, thereby ensuring that the medical locking component 20 can remain stable in both the initial state and the wire pressing state. In some embodiments, both the first engaging teeth 2113 and the second engaging teeth 2231 are ratchet teeth, thereby restricting the reverse rotation of the wire pressing member 22 away from the main body end 211, and further effectively preventing the risk of locking failure of the medical locking component 20. Specifically, as Figure 8 shown, the second engaging teeth 2231 are arranged in a semi-circular shape around the outer surface of the connection end 223 and are located between the two rod bodies 2221 of the drive end 222, so that after the main body member 21 and the wire pressing member 22 are assembled, the second engaging teeth 2231 on the wire pressing member 22 can be effectively engaged with the first engaging teeth 2113 on the main body member 21. Of course, in other embodiments, the first engaging teeth and the second engaging teeth can be respectively arranged on the bearing surface 211a of the main body member 21 and the wire pressing surface 2211 of the wire pressing member 22. Thus, while the wire pressing member 22 locks the medical wire 30 between the wire pressing surface 2211 and the bearing surface 211a, it further maintains self-locking through the meshing cooperation between the two.

[0050] Of course, to facilitate the rotational connection with the main body 21, the connecting end 223 is pivotally connected to the support portion 2122 of the main body 21 using a connecting shaft 23 to achieve a rotational connection between the two. Specifically, the connecting end 223 has a second connecting portion 2230 arranged around the central axis X, and the second connecting portion 2230 is pivotally connected to the first connecting portion 2120 of the main body 21. The second connecting portion 2230 can be either an axial hole or a connecting shaft. In some embodiments, the second connecting portion 2230 is a second axial hole opened around the central axis X, and the second axial hole 2230 passes through the connecting end 223 along the central axis X, allowing a separate connecting shaft 23 to pass through the first axial hole 2120 and the second axial hole 2230 to complete the pivotal connection between the two, or allowing a connecting shaft 23 relatively protruding from the inner side of each support portion 2122 to pass through the second axial hole 2230 to complete the pivotal connection between the two. In other embodiments, the second connecting portion 2230 is a connecting shaft 23 with a central axis X that is relatively protruded at both ends of the connecting end 223. The connecting shaft 23 is pivotally connected to the first axial hole 2120 of the main body 21 to complete the pivotal connection between the main body 21 and the wire pressing member 22.

[0051] Figure 10-12 The figure shows the initial state and the pressing state of the medical locking assembly 20. When the medical locking assembly 20 is in the initial state, as shown in FIG. Figure 10 As shown, the connecting end 223 of the wire pressing member 22 is pivotally connected to the support portion 2122 of the main body 21 via the connecting shaft 23, so that the second meshing teeth 2231 of the wire pressing member 22 mesh with the first meshing teeth 2113 of the main body 21. At this time, the wire pressing end 221 is positioned generally vertically above the body 2111, and the engaging portion 2220 of the driving end 222 is disposed away from the main body 2121 of the supporting end 212 and positioned generally below the bearing portion 2112. At the same time, the traction channel 2123 and the driving end 222 of the wire pressing member 22 are located on the same side of the body 2111, and the engaging portion 2220 and the traction channel 2123 are generally located on the same axis. After the distal end of the actuator 40 is removably engaged with the engaging portion 2220, the actuator 40 can further extend axially in a generally horizontal direction out of the traction channel 2123 until it is outside the body, thereby allowing the operator to axially actuate the actuator 40 to generate torque at the driving end 222. In addition, the free end of the medical wire 30 extends horizontally and passes through the first wire hole 2110 and the second wire hole 2210 to pass through the medical locking assembly 20, thereby realizing rapid wiring of the medical locking assembly 20. At this time, the medical wire 30 can slide freely in the first wire hole 2110 and the second wire hole 2210.

[0052] Next, the actuator 40 is actuated axially proximally or distally to drive the driving end 222 to rotate around the main body 21 toward the main body 2121. Under the engagement of the second meshing teeth 2231 and the first meshing teeth 2113, the wire pressing member 22 is step-controlled, thereby driving the wire pressing end 221 to rotate toward the bearing surface 211a. Thus, the medical wire 30 can be driven by the wire pressing end 221 to approach the bearing surface 211a, and be compressed and deformed by the wire pressing surface 2211 of the wire pressing end 221 onto the bearing surface 211a to generate friction until the appropriate wire locking force value is reached. At this point, the medical locking assembly 20 reaches the wire pressing state, which can be specifically referred to. Figure 11 and 12 At this time, the joint portion 2220 has moved to a position adjacent to the main body portion 2121, and the wire pressing member 22 is kept in the wire pressing state under the meshing cooperation between the second meshing teeth 2231 and the first meshing teeth 2113 to form a self-locking state, thereby ensuring the long-term stability of the locking of the medical locking assembly 20. Inevitably, as Figure 12 As shown, the cross section of the protrusion 2115 is smaller than the diameter of the second wire hole 2210 of the wire pressing member 22. Therefore, when the wire pressing member 22 uses the wire pressing surface 2211 to press and lock the medical wire 30 to the bearing surface 211a, the protrusion 2115 will be received in the second wire hole 2210.

[0053] Specifically, the medical wire 30 can be locked to the bearing surface 211a by the wire pressing surface 2211. Figure 11 The first pressing surface 2211a and the second pressing surface 2211b are pressed between the first bearing surface 2112a and the second bearing surface 2111a to present a locking length in two directions extending in a roughly L-shaped manner; alternatively, the medical line 30 can be as follows Figure 12 The first, second, and third pressing surfaces 2211a, 2211b, and 2211c are pressed against the first, second, and third supporting surfaces 2112a, 2111a, and 2115a, forming a roughly U-shaped locking structure extending in three directions. Therefore, the multi-directional locking structure of the medical locking assembly 20 not only effectively improves the locking force of the medical locking assembly 20 but also further enhances the reliability of locking the medical cable 30.

[0054] In some embodiments, the preferred range of the compressive deformation amount L of the medical thread 30 is 1 / 2D < L < 3 / 4D, where D is the diameter of the medical thread 30; at this time, if the medical thread 30 is made of ePTFE, the range of the compressive deformation amount L of the medical thread 30 can be 0.10 mm - 0.15 mm, so as to achieve a suitable thread-locking force value and avoid the risk of the medical thread 30 loosening under the beating of the heart; if the medical thread 30 is made of 2-0PET or 2-0PTFE, which is harder than ePTFE, the range of the compressive deformation amount L can be appropriately increased on the basis of 0.10 mm - 0.15 mm to achieve a suitable thread-locking force value. In addition, in view of the fact that the main body part 21 and the thread-pressing part 22 are both separately processable components, the present invention can ensure the compressive deformation amount L of the medical thread 30 by controlling the assembly dimensions between the two components, so it is easier to ensure the effective locking of the medical thread 30.

[0055] It can be understood that since it is necessary to achieve extrusion thread-locking for the medical thread 30, the main body part 21, the thread-pressing part 22 and the connecting shaft 23 are designed to be rigidly connected to each other, and the material can be stainless steel, pure titanium, titanium alloy, etc. Considering the processing difficulty and biocompatibility, the present invention preferably uses 316LVM stainless steel for the main body part 21, the thread-pressing part 22 and the connecting shaft 23.

[0056] In some embodiments, as Figure 18-20 shown, the medical locking assembly 20 further includes an anchoring part 24, and the anchoring part 24 is connected to the distal end of the main body end 211, such as a rotary connection or a fixed connection. Specifically, a connecting hole 2116 extending axially inward is provided on the side of the main body 2111 of the main body end 211 away from the supporting end 212, and the anchoring part 24 is fixedly connected, such as welded, into the connecting hole 2116. It can be understood that in some embodiments, the anchoring part 24 can be a Figure 19 helical coil type anchoring part as shown. Specifically, the anchoring part 24 is a helical coil with a sharp distal end, the proximal end of the helical coil is welded into the connecting hole 2116, and the sharp distal end of the helical coil has at least one inclined surface to ensure that the sharp distal end has a small force-bearing area and a small puncture resistance as the first contact point for the anchoring part 24 to anchor into the heart tissue. Therefore, it is easier to penetrate into the target tissue. At the same time, this way of helical anchoring of the anchoring part 24 and the anchoring and locking cooperation of axial pulling and actuating thread-locking, because the execution directions are not the same, there will not be the defects of over-anchoring or anchoring failure in the prior art when the existing anchoring device performs thread-locking after anchoring, because the direction of thread-locking is the same as the direction of anchoring. In some other embodiments, the anchoring part 24 can also be a Figure 20 radially expandable expandable implant as shown, such as structures like barbs, umbrella-shaped elements, etc.

[0057] Since the distal end of the actuator 50 is removably coupled to the proximal end of the main body 21 and extends outside the body for operator control, when the operator axially or helically advances the actuator 50 distally, causing the anchoring member 24 at the distal end of the main body 21 to embed into human tissue, the distal surface of the main body 21 (i.e., the distal surface of the body 2111 and the distal surface of the bearing portion 2112) closely contacts the human tissue, thereby enhancing the anchoring stability of the medical locking assembly 20 and reducing the overall height of the medical locking assembly 20. Once the anchoring member 24 is anchored to the human tissue, the tension of the medical suture 30 is adjusted to achieve optimal valve function, and the suture 30 is further locked to this desired tension using the suture pressing member 22. The actuator 50 is then disengaged from the first release portion 2124 at the proximal end of the main body 21, leaving the medical locking assembly 20 within the human body. Among them, the medical locking component 20 with an anchor can be used in the field of artificial chordae tendineae implantation, and can also be used in the fields of annular contraction and ventricular reconstruction to fix the medical wire 30 to the inside of the heart tissue to repair heart function.

[0058] The following uses artificial chordal implantation as an example to illustrate how the medical locking system 100 delivers and anchors the medical locking assembly 20 having the anchor 24 to the ventricular tissue of the mitral valve, such as the papillary muscle or the free wall, via a transcatheter approach to complete the implantation of artificial chordal tendons of the mitral valve, thereby preventing mitral regurgitation. Figure 21-25 As shown, the medical locking system 100 includes a catheter 10, a medical locking assembly 20, an actuator 40, a driver 50, and a handle (not shown). The catheter 10 is a hollow, flexible, elongated tube with a bend-adjustable design, enabling it to navigate the complex human vascular system and reach a target location within the heart. In some embodiments, the catheter 10 can be a flexible sheath, a metal tubing cutter, or a flexible tube made of other materials. The medical locking assembly 20 is pre-loaded onto the distal end of the catheter 10. The distal end of the actuator 40 is removably coupled to the coupling portion 2220 of the wire crimping member 22. The proximal end of the actuator 40 passes through the traction channel 2123 of the main body 21 and further extends through the catheter 10 to the proximal handle, where it is fixedly connected. The distal end of the driver 50 is detachably connected to the first release portion 2124 of the main body 21. The proximal end of the driver 50 extends through the catheter 10 and to the proximal handle, where it is connected to the proximal handle. Specifically, the distal end of the driver 50 has a second release portion 500. In some embodiments, the second release portion 500 is a second external thread 500 that cooperates with the first release portion 2124 having an internal thread. In other embodiments, the second release portion 500 is an S-shaped buckle, an oblique buckle, etc. that can cooperate with the first release portion 2124.

[0059] Then, after completing the transcatheter leaflet suturing operation, the free end of the medical wire 30 will be led out of the body, and further introduced into the medical locking system 100 and passed through the first wire hole 2110 and the second wire hole 2210 of the medical locking assembly 20, and then led from the cavity of the catheter 10 or outside the cavity of the catheter 10 to the proximal handle or lead out of the medical locking system 100. Then, keep the medical wire 30 moderately taut, and push the distal end of the medical locking system 100 along the path of the medical wire 30 at a uniform speed into the ventricle of the mitral valve, so as to approach and adhere to the target anchoring area of ​​the papillary muscle, such as Figure 22 After the abutment is completed, the proximal handle is operated to actuate the driver 50 to advance the screw toward the distal end, so as to push the anchor 24 of the medical locking assembly 20 out of the distal end of the catheter 10 and anchor it on the papillary muscle to complete the anchoring operation, as shown in FIG. Figure 23 As shown. The anchor 24 can be inserted in a direction substantially perpendicular to the papillary muscle. Then, after adjusting the medical line 30 to an appropriate tension, the actuator 40 is actuated to drive the driving end 222 of the wire pressing member 22 to move toward the proximal end, thereby driving the wire pressing end 221 to squeeze the medical line 30 and lock it into the wire pressing state, as shown in FIG. Figure 24 As shown. Once the thread is locked, the medical locking assembly 20 is left in the human body and the other components of the medical locking system 100 are withdrawn. Then, a cutter (not shown) is introduced along the path of the medical thread 30 to the proximal end of the medical locking assembly 20 outside the body, and the medical thread 30 is cut at the proximal end of the medical locking assembly 20. Once the cutting is completed, the cutter is withdrawn, and the implanted state of the medical locking assembly 20 is as shown. Figure 25 At this point, the medical thread 30 after cutting will be formed between the leaflets of the heart valve and the ventricular tissue to form artificial tendons, thereby replacing or supplementing the natural tendons inside the heart.

[0060] Of course, if the medical locking assembly 20 does not include the anchor 24, the medical locking system 100 can be used in edge-to-edge repair surgeries, which only require locking of medical wires. Below, edge-to-edge repair is used as an example to illustrate how the medical locking system 100 completes edge-to-edge repair of the mitral valve via a transapical approach. Specifically, Figures 26-28 As shown, after completing the transapical leaflet suturing operation, the free end of the medical wire 30 will be led out of the body for the introduction of the medical locking system 100. At this time, the medical locking assembly 20 has been pre-loaded on the distal end of the catheter 10. After the lead-in is completed, the medical locking system 100 is pushed along the path of the medical wire 30 at a uniform speed to the target position of the mitral valve leaflet, and the proximal handle is manipulated to actuate the driver 50 to advance axially toward the distal end, and the medical locking assembly 20 is pushed out of the distal end of the catheter 10. Next, the medical wire 30 is adjusted to an appropriate tension, the actuator 40 is actuated to complete the locking of the medical locking assembly 20, and then the wire cutter is introduced to the proximal end of the medical locking assembly 20 to cut the medical wire 30. The state after the cutting is completed is as shown. Figure 28shown.

[0061] The above is an implementation of the embodiment of the present invention. It should be noted that, for those skilled in the art, without departing from the principles of the embodiment of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered to be within the scope of protection of the present invention. The above is an implementation of the embodiment of the present invention. It should be noted that, for those skilled in the art, without departing from the principles of the embodiment of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A medical locking assembly, characterized in that: The medical locking assembly comprises: Main body; connecting shaft; and A wire pressing member, the wire pressing member is rotatably connected to the main body around the connecting shaft, the wire pressing member is provided with a wire pressing end and a driving end, and the wire pressing end and the driving end are respectively located on both sides of the connecting shaft; The driving end can be actuated to rotate around the connecting shaft, thereby driving the wire pressing end to rotate toward the main body, so as to press the medical wire between the wire pressing end and the main body onto the main body.

2. The medical locking assembly according to claim 1, wherein: The driving end has an engaging portion for removably engaging with the actuator, and the driving end rotates around the connecting shaft under axial actuation of the actuator.

3. The medical locking assembly according to claim 2, wherein: The driving end includes two rods spaced apart from each other, and the joint is disposed between the two rods and away from the connecting shaft.

4. The medical locking assembly according to claim 3, wherein: The engagement portion has an outer surface, and the actuator extends proximally after wrapping around the outer surface.

5. The medical locking assembly according to claim 4, wherein: The diameter of the joint portion gradually increases from the middle to both ends.

6. The medical locking assembly according to claim 4 or 5, characterized in that: A protrusion is provided on one side of each rod body adjacent to the joint portion to prevent the actuator from being separated from the outer surface.

7. The medical locking assembly according to claim 4, wherein: The driving end further has an anti-slip portion, which is arranged between the two rods and adjacent to the joint. A gap is formed between the anti-slip portion and the joint, and the actuator passes through the gap when it goes around the outer surface.

8. The medical locking assembly according to claim 3, wherein: The joint portion is provided with two axially penetrating traction holes, and the actuator goes around the traction holes and extends toward the proximal end.

9. The medical locking assembly according to claim 3, wherein: An internal threaded hole extending axially is provided on the joint portion, and the actuator is threadedly connected to the internal threaded hole and then extends toward the proximal end.

10. The medical locking assembly according to claim 2, wherein: The main body comprises a main body end and a support end extending from the main body end. The wire pressing member is rotatably connected to the support end. The main body end cooperates with the wire pressing end to compress the medical wire.

11. The medical locking assembly according to claim 10, wherein: The main body end is provided with a first wire passing hole having a first axial center line, and the wire pressing end is provided with a second wire passing hole having a second axial center line. The first axial center line is flush with the second axial center line, and the medical wire passes through the first wire passing hole and the second wire passing hole in a horizontal direction.

12. The medical locking assembly according to claim 10, wherein: The main body end is provided with a bearing surface extending in at least two directions, and the wire pressing end is provided with a wire pressing surface matched with the bearing surface, and the medical wire is pressed between the bearing surface and the wire pressing surface.

13. The medical locking assembly according to claim 12, wherein: The connecting shaft has a central axis, and a distance from the pressing surface to the central axis is smaller than a distance from the joining portion to the central axis.

14. The medical locking assembly according to claim 10, wherein: The support end includes two support parts that are spaced apart from each other, and the wire pressing member includes a connecting end that connects the wire pressing end and the driving end; the connecting end is pivotally connected to the support part through the connecting shaft.

15. The medical locking assembly according to claim 14, wherein: The main body end is engaged with the connecting end.

16. The medical locking assembly according to claim 10, wherein: The support end is provided with an axially penetrating traction channel, the traction channel and the driving end are located on the same side of the main body end, the distal end of the actuator is engaged with the engaging portion, and the proximal end of the actuator passes through the traction channel to pass out of the medical locking assembly.

17. The medical locking assembly according to claim 16, wherein: The support end is further provided with a first release portion that is removably engaged with a driver, and the first release portion is disposed adjacent to the traction channel.

18. The medical locking assembly according to claim 10, wherein: The medical locking assembly further comprises an anchoring member connected to a side of the main body end away from the supporting end, and the anchoring member can be advanced toward the distal end to be anchored into tissue.

Images