Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art or related art.
Accordingly, it is an object of the present invention to provide a suture anchor assembly.
In order to achieve the above object, the present invention provides a suture anchor assembly, comprising: the anchor sleeve is provided with an axial hole and an external thread so as to be implanted into a human body; and the clamping part is at least partially arranged in the axial hole, a plurality of chucks are arranged on the clamping part, a gap is reserved between at least two chucks, and the gap is used for placing a suture, wherein when the clamping part stretches into the anchor sleeve, at least part of the hole wall of the axial hole is in interference fit with the clamping part, so that the gap between the chucks is reduced to clamp the suture in the gap.
In the technical scheme, the clamping parts and the anchor sleeves are in interference fit, so that the clamping heads can be pressed towards the middle to reduce the gaps between the clamping heads, thereby clamping the suture line and preventing loosening; the suture line is positioned in the gap between the chucks and is not contacted with the external threads of the anchor sleeve, so that the suture line is prevented from being cut and damaged by the external threads due to over tightening; by the clamping mode, the thread ends at the two ends of the suture line can be fixed at the same time, so that knotting is avoided; in addition, when the anchor sleeve is implanted into a human body, the clamping part can be driven to move to the deep of the human body through the interference fit of the clamping part and the anchor sleeve, and the suture line is tensioned through the limit of the external thread of the anchor sleeve; the depth of the anchor sleeve implantation can be adjusted, so that the tensioning degree of the suture line is adjusted, the adjusting mode is simple, the small accuracy of the adjusting amplitude is high, the suture line can be prevented from being too tight or too loose, the problem that the suture line is cut and damaged is effectively solved, and the problem that the suture line is too loose to cause fixing failure is also solved.
It will be appreciated that the location of the gap, when there are only two collets, is that the gap is between the two collets; when three chucks or more chucks are provided, the gap comprises a space between two chucks and a space commonly surrounded by the three chucks, for example, a central hole surrounded by the three chucks, and the suture line can be placed in the space between the two chucks or in the central hole surrounded by the three chucks.
In the above technical solution, at least one of the inner wall of the anchor sleeve and the clamping portion is tapered.
In the technical scheme, the inner wall of the anchor sleeve and the clamping part are both conical, and the conicity is the same.
In the technical scheme, the clamping part is provided with the central hole, the plurality of chucks are symmetrically distributed along the axis of the central hole, and the clamping surfaces of the plurality of chucks jointly form the hole wall of the central hole.
In any one of the above technical solutions, the method further includes: the guide part is arranged at the tail part of the clamping part and is provided with a guide inclined plane or a guide curved surface so as to guide when the suture anchor assembly is implanted into a human body.
In the technical scheme, when the clamping part completely stretches into the axial hole, the guiding part is abutted against the tail part of the anchor sleeve.
In the technical scheme, the guide part is provided with the through groove communicated with the gap, the through groove divides the guide part into at least two parts, wherein the at least two parts are connected through the connecting part, and the connecting part is also used for being wound by the suture line; and/or the head of the anchor sleeve is provided with a counter bore for the insertion of a tightening tool.
In any of the above technical solutions, a buffer layer is provided on a clamping surface of the chuck.
In any of the above technical solutions, the inner wall of the anchor sleeve and the outer wall of the clamping portion are provided with mutually adapted conical threads.
In the above technical solution, the clamping portion is hemispherical or semi-ellipsoidal, and the axial hole is conical or cylindrical.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.
Detailed Description
In order that the above-recited objects, features and advantages of the present application will be more clearly understood, a more particular description of the application will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
Some embodiments according to the present invention are described below with reference to fig. 1 to 4.
As shown in fig. 1 to 4, a suture anchor assembly according to one embodiment of the present invention includes: an anchor sleeve 10 provided with an axial hole 102 and an external thread 100 for implantation into a human body; the clamping part 12 is at least partially arranged in the axial hole 102, a plurality of chucks 120 are arranged on the clamping part 12, a gap 122 is reserved between at least two chucks 120, the gap 122 is used for placing the suture 2, wherein when the clamping part 12 stretches into the anchor sleeve 10, at least part of the hole wall of the axial hole 102 is in interference fit with the clamping part 12, so that the gap 122 between the chucks 120 is reduced to clamp the suture 2 in the gap 122.
In this embodiment, the clamping portions 12 and the anchor sleeve 10 are interference fit, so that the plurality of chucks 120 can be pressed to the middle to reduce the gap 122 therebetween, thereby clamping the suture thread 2 and preventing loosening; the suture 2 is positioned in the gap 122 between the chucks 120 and is not in contact with the external threads 100 of the anchor sleeve 10, so that the suture 2 is prevented from being cut and damaged by the external threads 100 due to the fact that the suture 2 is pulled too tightly; by the clamping mode, the thread ends at the two ends of the suture line 2 can be fixed at the same time, so that knotting is avoided; in addition, through the interference fit of the clamping part 12 and the anchor sleeve 10, when the anchor sleeve 10 is implanted into a human body, the clamping part 12 can be driven to move to the deep of the human body, and the suture thread 2 is tensioned through the limit of the external thread 100 of the anchor sleeve 10; the depth of the implantation of the anchor sleeve 10 can be adjusted, so that the tensioning degree of the suture line 2 is adjusted, the adjusting mode is simple, the small accuracy of the adjusting amplitude is high, the overtightening or loosening of the suture line 2 can be avoided, the problem that the suture line 2 is cut and damaged is effectively solved, and the problem that the fixation fails due to the fact that the suture line 2 is too loose is solved.
As shown in fig. 1,3, in some embodiments, with only two collets 120, a gap 122 is located between the two collets 120; in other embodiments, there are three clips 120, and the gap 122 includes both a space between any two clips 120 and a space defined between the three clips 120, such as a central hole 124 defined by the three clips 120, and suture 2 may be placed in the space between two clips 120 or in the central hole 124 defined by the three clips 120.
As shown in fig. 2 and 3, in the above-described embodiment, at least one of the inner wall of the anchor sleeve 10 and the clamping portion 12 is tapered.
In this embodiment, at least one of the inner wall of the anchor sleeve 10 and the clamping portion 12 is tapered, specifically, for example, the inner wall of the anchor sleeve 10 or the inner wall of the axial hole 102 is tapered, and gradually decreases in the direction of the head along the tail of the anchor sleeve 10, while the clamping portion 12 is cylindrical, so that the inner wall of the axial hole 102 gradually contracts inwards as the clamping portion 12 extends deeper into the anchor sleeve 10, the more tightly the anchor sleeve 10 and the clamping portion 12 are clamped, the more firmly the clamping head 120 is pressed towards the middle, thereby clamping the suture thread 2 between the gaps 122, and improving the fixing effect of the suture thread 2; in some embodiments, the inner wall of the anchor sleeve 10 is cylindrical, the clamping portion 12 is tapered, and the tapered portion gradually decreases from the tail portion to the head portion of the clamping portion 12, or the anchor sleeve 10 and the clamping portion 12 are tapered, and the tapered portion gradually decreases from the tail portion to the head portion, so that the technical effect is achieved, that is, the clamping head 120 clamps the suture 2 between the gaps 122 more firmly as the clamping portion 12 is deep, or as the anchor sleeve 10 is implanted into a human body.
In some embodiments, the inner wall of the anchor sleeve 10 is cylindrical and the clamping portion 12 is tapered, but the head of the clamping portion 12 is large and the tail is small, the head of the clamping portion 12 being an interference fit with the inner wall of the anchor sleeve 10.
As shown in fig. 2, in the above embodiment, both the inner wall of the anchor sleeve 10 and the clamping portion 12 are tapered, and the taper is the same.
In this embodiment, the inner wall of the anchor sleeve 10 and the clamping portion 12 are tapered, and the same taper is adopted, further, the anchor sleeve 10 and the clamping portion 12 are tapered with a small head and a large tail, so that the inner wall of the anchor sleeve 10 and the clamping portion 12 are more tightly matched with each other, the clamping portion 12 is uniformly stressed, the clamping force of the clamping head 120 on the suture 2 is also more uniform, the situation that the individual position of the suture 2 is broken and loosened due to overlarge stress is avoided, and the reliability and stability of clamping and fixing of the suture 2 are improved.
As shown in fig. 3 and 4, in the foregoing embodiment, the clamping portion 12 is provided with a central hole 124, the plurality of chucks 120 are symmetrically distributed along the axis of the central hole 124, and the clamping surfaces of the plurality of chucks 120 together form the wall of the central hole 124.
In this embodiment, the clamping surfaces of the plurality of symmetrically distributed clamping heads 120 together form the hole wall of the central hole 124, so that the uniformity of the stress of the suture 2 can be further improved when the suture 2 is placed in the central hole 124, and the reliability and stability of the clamping and fixing of the suture 2 by the clamping heads 120 can be further improved.
Note that in fig. 3, two broken lines are the walls of the central hole 124.
As shown in fig. 3, in any one of the foregoing embodiments, the method further includes: the guiding part 14 is arranged at the tail part of the clamping part 12, and a guiding inclined plane or a guiding curved surface is arranged on the guiding part 14 so as to guide when the suture anchor assembly is implanted into a human body.
In this embodiment, the guide portion 14 is provided with a guide slope or a guide curved surface, so that the suture anchor assembly is guided conveniently, smoothness of the suture anchor assembly when implanted into a human body is improved, and operation efficiency is further improved.
In the above embodiment, the guide portion 14 abuts the tail of the anchor sleeve 10 when the clamping portion 12 is fully extended into the axial bore 102.
In this embodiment, the abutment of the guide portion 14 with the anchor sleeve 10 is beneficial to pushing the guide portion 14 to drive the clamping portion 12 connected with the guide portion 14 when the anchor sleeve 10 is implanted into a human body, so that the suture thread 2 is tensioned, and the fixing strength is improved.
In the above embodiment, the guide portion 14 is provided with the through groove 140 communicating with the gap 122, the through groove 140 divides the guide portion 14 into at least two parts, wherein the at least two parts are connected by a connecting portion, and the connecting portion is further used for being wound by the suture thread 2; and/or the head of the anchor sleeve 10 is provided with a counterbore 104 for the insertion of a tightening tool.
Since suture 2 is a flexible body, it is difficult to directly place in small gap 122; in this embodiment, as long as the suture thread 2 bypasses the connecting portion from the through groove 140 and the gap 122, and then the thread ends at two ends of the suture thread 2 are folded toward the middle, the suture thread 2 can be placed in the gap 122 and is not easy to break away, the fixing speed of the suture thread 2 can be greatly improved, the stability and reliability of clamping the suture thread 2 are ensured, and the operation efficiency is improved.
In addition, by providing the head of the anchor sleeve 10 with a counter bore, the insertion of the tightening tool is facilitated, thereby facilitating the screwing of the anchor sleeve 10 into the human body by the tightening tool, facilitating the implantation and adjusting the implantation depth.
In any of the above embodiments, the gripping surface of the collet 120 is provided with a buffer layer.
In this embodiment, by providing the buffer layer on the clamping surface, the clamping force is advantageously uniformly dispersed on the suture thread 2, and breakage of the suture thread 2 due to local overstress is avoided, thereby leading to failure in fixation.
It will be appreciated that the suture thread 2 is a flexible body, and the collet 120 is generally made of a harder material, and in addition, the clamping surfaces are not necessarily flat or are not necessarily completely parallel to each other due to factors such as processing precision, so that uneven stress is likely to occur when the suture thread 2 is clamped, and the problem of uneven stress is effectively solved due to the arrangement of the buffer layer.
In any of the above embodiments, the inner wall of the anchor sleeve 10 and the outer wall of the clamping portion 12 are provided with mutually adapted conical threads.
In this embodiment, by providing the inner wall of the anchor sleeve 10 and the outer wall of the clamping portion 12 with mutually adapted conical threads, or conical threads, the anchor sleeve 10 and the clamping portion 12 can be tightly engaged with each other by the conical threads, so that the clamping portion 12 is further contracted to clamp the suture 2 more firmly, and the clamping portion 12 can be ensured to move deep into the human body along with the implantation of the anchor sleeve 10, thereby ensuring the tightness of the suture 2.
In the above embodiments, the clamping portion 12 has a hemispherical or semi-ellipsoidal shape, and the axial hole 102 has a conical or cylindrical shape.
In this embodiment, the clamping portion 12 is hemispherical or semi-ellipsoidal in shape, similar to the tapered clamping portion 12, i.e., the collet 120 is contracted toward the middle as the clamping portion 12 is advanced into the anchor sleeve 10, thereby clamping the suture 2.
The suture anchor assembly according to one embodiment of the present application is comprised of a compression device, anchor sleeve 10. The pressurizing device consists of a conical clamping part 12 and a guiding part 14, and is provided with a central hole 124, and the central hole 124 is used for placing the suture thread 2; the pressurizing means is provided with a plurality of grippers, a gap 122 is formed between adjacent grippers, the gap 122 is communicated with the central hole 124, and when the pressurizing means is pressurized, the gap 122 is contracted, so that the diameter of the central hole 124 is also reduced, and the suture thread 2 in the central hole 124 is clamped.
Specifically, a conical bore is provided in the anchor sleeve 10 to facilitate engagement with the conical clamping portion 12 of the compression device. In use, the suture thread 2 is first threaded into the central bore 124 of the compression device and then the compression device is installed into the anchor sleeve 10, with the clamping portion 12 of the compression device in interference fit with the conical bore of the anchor sleeve 10. When the suture anchor assembly is implanted, the anchor sleeve 10 is continuously screwed in, the conical clamping part 12 of the pressurizing device is pressed by the anchor sleeve 10 to enable each clamping head 120 to shrink towards the middle, and then the suture thread 2 is clamped, namely, thread ends at two ends of the suture thread 2 can be clamped in the central hole 124, so that the knotless suture technology is realized; meanwhile, as the anchor sleeve 10 is continuously screwed in, the clamping part 12 of the pressurizing device is in interference fit with the anchor sleeve 10, or the guide part 14 of the pressurizing device abuts against the anchor sleeve 10, so that the pressurizing device can be pushed into a human body deeper along with the screwing in of the anchor sleeve 10, the suture thread 2 is tensioned, and the tightness adjustment of the suture thread 2 is realized by adjusting the screwing-in depth of the anchor sleeve 10.
The suture anchor assembly of the above embodiment can rapidly and effectively solve the problems of suture fixation of ligament tendon diseases and difficult knotting of suture thread 2, and has the beneficial effects that:
(1) The central hole 124 of the pressurizing device is internally provided with the line, so that the operation is simple and safe, and the operation time and the clinical learning curve of a doctor are shortened.
(2) The pressing means cooperates with the anchor sleeve 10 in a conical manner such that the deeper the pressing means penetrates the anchor sleeve 10, the more firmly the suture 2 will be pressed or the deeper the anchor sleeve 10 is screwed in, the more firmly the suture 2 will be pressed.
The technical scheme of the invention is described in detail with reference to the accompanying drawings, through the technical scheme of the invention, the two ends of the suture are simultaneously clamped in the pressurizing device, so that the suture is prevented from being cut and damaged by the external threads of the anchor sleeve due to the fact that the suture is too tight, and knotting is not needed; the tension of the suture line can be adjusted by adjusting the implantation depth of the anchor sleeve, so that the suture line is prevented from being too loose or too tight, the operation difficulty is reduced, and the operation efficiency and safety are improved.
In the present invention, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more, unless expressly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or units referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.