CN209808442U - Suture anchor assembly - Google Patents
Suture anchor assembly Download PDFInfo
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- CN209808442U CN209808442U CN201920300395.5U CN201920300395U CN209808442U CN 209808442 U CN209808442 U CN 209808442U CN 201920300395 U CN201920300395 U CN 201920300395U CN 209808442 U CN209808442 U CN 209808442U
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- suture
- clamping
- anchor sleeve
- anchor assembly
- suture anchor
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Abstract
The utility model provides a suture anchor subassembly, include: the anchor sleeve is provided with an axial hole and an external thread so as to be implanted into a human body; the clamping part is at least partially arranged in the axial hole, a plurality of chucks are arranged on the clamping part, gaps exist between at least two chucks and are used for placing sutures, and when the clamping part extends into the anchor sleeve, at least partial hole wall of the axial hole is in interference fit with the clamping part, so that the gaps among the plurality of chucks are reduced, and the sutures in the gaps are clamped. Through the technical scheme of the utility model, 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 thread of the rivet sleeve due to the fact that the suture is too tight, and knotting is not needed; the tension of the suture can be adjusted by adjusting the implantation depth of the anchor sleeve, the suture is prevented from being too loose or too tight, the operation difficulty is reduced, and the efficiency and the safety of the operation are improved.
Description
Technical Field
The utility model relates to the technical field of medical equipment, particularly, relate to a suture anchor subassembly.
Background
The main treatment means of the traditional orthopedics sports medicine comprise plaster or bandage external fixation, steel wire suture, suture, fixation of tendon tissue after bone opening and the like, and the methods have the defects of infirm, long time and poor curative effect in the repair process; joints are sticky and stiff, and tissues are broken again; residual pain at the wound site; partial function loss and the like. With the further development of medical science in recent years, the bone anchor and arthroscope minimally invasive technology becomes an advanced means for treating orthopedic sports medical injuries, and the bone anchor and arthroscope minimally invasive technology has the advantages of minimally invasive, short operation time, rapid recovery, reduction of infection risk, complete recovery of original anatomical involution relation, reliable fixation, high traction strength, and avoidance of complications and no need of secondary operation.
Present bone anchor mainly can be divided into knot and no knot system, and no knot anchor has easy operation, convenient to use, advantage such as operation efficiency height more ordinary anchor, has more and more become the treatment trend, nevertheless still exists not enoughly in use in current no knot product: the current products on the market mainly adopt an external pressure suture structure of an anchor, and the structure firstly relies on a guide head to send the suture to a preset position and then presses the anchor. The suture line can not be pulled too tightly or too loosely in the process of pressing the anchor into the suture, and the thread is too tight, so that the anchor can cause cutting damage to the thread due to the fact that the thread is directly contacted with the suture line, fixing strength is influenced, and long-term curative effect of ligament repair is influenced. The thread is too loose, the anchor is not easy to compact the thread, the thread is easy to loose during the subsequent rehabilitation activities of patients, and the fixation failure is easy to cause.
SUMMERY OF THE UTILITY MODEL
The present invention aims at least solving one of the technical problems existing in the prior art or the related art.
In view of this, the utility model aims at providing a suture anchor subassembly.
In order to achieve the above object, the present invention provides a suture anchor assembly, including: the anchor sleeve is provided with an axial hole and an external thread so as to be implanted into a human body; the clamping part is at least partially arranged in the axial hole, a plurality of chucks are arranged on the clamping part, gaps exist between at least two chucks and are used for placing sutures, and when the clamping part extends into the anchor sleeve, at least partial hole wall of the axial hole is in interference fit with the clamping part, so that the gaps among the plurality of chucks are reduced, and the sutures in the gaps are clamped.
In the technical scheme, the clamping parts and the anchor sleeves are in interference fit, so that the plurality of clamping heads can be extruded towards the middle to reduce the gaps among the clamping heads, thereby clamping the suture and preventing the suture from loosening; the suture is positioned in the gap between the clamping heads and is not contacted with the external thread of the anchor sleeve, so that the suture is prevented from being cut and damaged by the external thread due to over-tight pulling; through the clamping mode, the thread ends at two ends of the suture can be fixed simultaneously, so that knotting is avoided; in addition, the clamping part can be driven to move to the deep part of the human body when the anchor sleeve is implanted into 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 implantation of the anchor sleeve can be adjusted, so that the tensioning degree of the suture is adjusted, the adjusting mode is simple, the adjusting amplitude is small, the precision is high, the suture can be prevented from being too tight or too loose, the problem that the suture is cut and damaged is effectively solved, and the problem that the suture is too loose to cause fixing failure is also solved.
It will be appreciated that the location of the gap, where there are only two collets, is between the collets; when there are three or more than three chucks, the gap includes both the space between the two chucks and the space enclosed by the three chucks together, for example, the central hole enclosed by the three chucks, and the suture thread can be placed in the space between the two chucks or the central hole enclosed 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 and the clamping part of the anchor sleeve are both conical and have the same taper.
In the technical scheme, the clamping part is provided with a 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 a guide inclined plane or a guide curved surface is arranged on the guide part so as to guide when the suture anchor assembly is implanted into a human body.
In the above technical scheme, when the clamping part completely extends into the axial hole, the guiding part abuts against the tail part of the anchor sleeve.
In the technical scheme, the guide part is provided with a through groove communicated with the gap, the guide part is divided into at least two parts by the through groove, wherein the at least two parts are connected through a connecting part, and the connecting part is also used for being wound by a suture line; and/or the head of the anchor sleeve is provided with a counter bore for insertion of a tightening tool.
In any one of the above technical solutions, a buffer layer is provided on the clamping surface of the chuck.
In any one 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 tapered threads.
In the above technical scheme, the clamping part is in a hemispherical shape or a semi-ellipsoidal shape, and the axial hole is in a conical shape or a cylindrical shape.
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.
Drawings
FIG. 1 is a schematic structural view of a suture anchor assembly according to one embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a suture anchor assembly according to an embodiment of the present invention;
fig. 3 is a front view schematically illustrating a pressurizing device according to an embodiment of the present invention;
fig. 4 is a schematic side view of a pressurizing device according to an embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 4 is:
10 anchor sleeve, 100 external thread, 102 axial hole, 104 counter bore, 12 clamping part, 120 collet, 122 gap, 124 central hole, 14 guide part, 140 through groove, 2 suture.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings, which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Some embodiments according to the 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: the anchor sleeve 10 is provided with an axial hole 102 and an external thread 100 to be implanted into a human body; the clamping portion 12 is at least partially disposed in the axial hole 102, a plurality of clamping heads 120 are disposed on the clamping portion 12, a gap 122 exists between at least two clamping heads 120, and the gap 122 is used for placing the suture 2, wherein when the clamping portion 12 extends into the anchor sleeve 10, at least a part of the hole wall of the axial hole 102 is in interference fit with the clamping portion 12, so that the gaps 122 between the plurality of clamping heads 120 are reduced to clamp the suture 2 in the gap 122.
In this embodiment, the interference fit of the clamping portion 12 and anchor sleeve 10 allows the plurality of collets 120 to be squeezed therebetween to reduce the gap 122 therebetween, thereby clamping the suture 2 against loosening; the suture 2 is positioned in the gap 122 between the clamping heads 120 and is not contacted with the external thread 100 of the anchor sleeve 10, so that the suture 2 is prevented from being cut and damaged by the external thread 100 due to being pulled too tightly; through the clamping mode, the thread ends at the two ends of the suture thread 2 can be fixed simultaneously, 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 deep into the human body, and the suture 2 is tensioned through the limit of the external thread 100 of the anchor sleeve 10; the depth of implanting of anchor sleeve 10 can also be adjusted to adjust the taut degree of stylolite 2, the regulative mode is simple, and the little precision of regulation range is high, and then can avoid stylolite 2 tension or too pine, has solved the stylolite 2 effectively and has cut the problem of damage, has still solved the stylolite 2 and has loose the problem that leads to fixed failure too much.
As shown in fig. 1, 3, in some embodiments, when there are only two collets 120, the gap 122 is located between the two collets 120; in other embodiments, there are three jaws 120, the gap 122 includes both the space between any two of the jaws 120 and the space commonly enclosed between the three jaws 120, such as the central bore 124 enclosed by the three jaws 120, and the suture 2 can be placed in either the space between the two jaws 120 or the central bore 124 enclosed by the three jaws 120.
As shown in fig. 2 and 3, in the above 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 toward the head along the tail portion of the anchor sleeve 10, and the clamping portion 12 is cylindrical, so that as the clamping portion 12 extends deeper into the anchor sleeve 10, the inner wall of the axial hole 102 gradually shrinks inward, the tighter the clamping between the anchor sleeve 10 and the clamping portion 12 is, and the more the clamping head 120 is squeezed toward the middle, thereby more firmly clamping the suture 2 between the gaps 122 and improving the fixing effect of the suture 2; in some embodiments, the inner wall of the anchor sleeve 10 is cylindrical and the clamping portion 12 is tapered and tapers cephaladly along the tail portion of the clamping portion 12, or both the anchor sleeve 10 and the clamping portion 12 are tapered and tapers cephaladly along their respective tail portions, all of which achieve the technical effect of providing a more secure clamping of the suture 2 between the gaps 122 by the collet 120 as the clamping portion 12 is advanced, or as the anchor sleeve 10 is implanted into the 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, with the head of the clamping portion 12 having an interference fit with the inner wall of the anchor sleeve 10.
As shown in fig. 2, in the above embodiment, the inner wall of the anchor sleeve 10 and the clamping portion 12 are both tapered and have the same taper.
In this embodiment, the inner wall of the anchor sleeve 10 and the clamping portion 12 are both tapered and have the same taper, and further, the inner wall of the anchor sleeve 10 and the clamping portion 12 are both tapered with a small head and a large tail, which is beneficial to the closer mutual matching of the inner wall of the anchor sleeve 10 and the clamping portion 12 and the uniform stress of the clamping portion 12, so that the clamping force of the clamping head 120 on the suture 2 is more uniform, the problem that the individual positions of the suture 2 are too stressed to break and loosen is avoided, and the reliability and stability of the clamping and fixing of the suture 2 are improved.
As shown in fig. 3 and 4, in the above embodiment, the clamping portion 12 has a central hole 124, the plurality of cartridges 120 are symmetrically distributed about the axis of the central hole 124, and the clamping surfaces of the plurality of cartridges 120 together form the hole wall of the central hole 124.
In this embodiment, the holding surfaces of the plurality of symmetrically distributed jaws 120 together form the wall of the central bore 124, which further improves the uniformity of the force applied to the suture 2 when the suture 2 is placed in the central bore 124, and thus improves the reliability and stability of the suture 2 being clamped and fixed by the jaws 120.
It should be noted that in fig. 3, the two dotted lines are the walls of the central hole 124.
As shown in fig. 3, in any of the above embodiments, the method further includes: and a guide part 14 arranged at the tail part of the clamping part 12, wherein the guide part 14 is provided with a guide inclined plane or a guide curved surface so as to guide when the suture anchor component is implanted into a human body.
In this embodiment, the guiding slope or the guiding curved surface provided on the guiding portion 14 facilitates guiding the suture anchor assembly, thereby improving the smoothness of the suture anchor assembly when being implanted into a human body and further improving the operation efficiency.
In the above-described embodiment, when the clamping portion 12 is fully extended into the axial bore 102, the guiding portion 14 abuts against the tail portion of the anchor sleeve 10.
In this embodiment, the abutment of the guiding portion 14 and the anchor sleeve 10 is beneficial to push the guiding portion 14 to bring the clamping portion 12 connected with the guiding portion 14 when the anchor sleeve 10 is implanted into a human body, thereby tensioning the suture 2 and improving the fixing strength.
In the above embodiment, the guide portion 14 is provided with the through groove 140 communicating with the gap 122, and the through groove 140 divides the guide portion 14 into at least two parts, wherein at least two parts are connected by the 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 counter bore 104 for insertion of a tightening tool.
Since the suture 2 is a flexible body, it is difficult to directly place it in the minute gap 122; in this embodiment, as long as the suture thread 2 is wound around the connecting portion from the through groove 140 and the gap 122, and then the thread ends at the two ends of the suture thread 2 are drawn in to the middle, the suture thread 2 can be placed in the gap 122 without easily coming off, the fixing speed of the suture thread 2 can be greatly increased, the stability and reliability of clamping the suture thread 2 can be ensured, and the operation efficiency can be improved.
In addition, the countersunk hole is formed in the head of the anchor sleeve 10, so that a screwing tool can be inserted conveniently, the anchor sleeve 10 can be screwed into a human body conveniently through the screwing tool, and the implantation depth can be conveniently adjusted.
In any of the above embodiments, the clamping surface of the collet 120 is provided with a cushioning layer.
In this embodiment, through set up the buffer layer on the clamping face, be favorable to dispersing clamping-force evenly on stylolite 2, avoid stylolite 2 because of local atress too big lead to the fracture, and then lead to fixed failure.
It can be understood that the suture 2 is a flexible body, and the collet 120 is generally made of a hard material, and is influenced by factors such as processing precision, and the clamping surfaces are not necessarily flat, or a plurality of clamping surfaces are not necessarily completely parallel, so that the suture 2 is clamped with a large possibility of uneven stress, and the problem of uneven stress is effectively solved by 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 tapered threads, or tapered threads, the anchor sleeve 10 and the clamping portion 12 can be tightly engaged with each other through the tapered threads, so that the clamping portion 12 is further contracted to more firmly clamp the suture 2, and it is also ensured that the clamping portion 12 can move to the deep inside of 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 gripping portion 12 has a hemispherical or semi-ellipsoidal shape and the axial bore 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, in that the collet 120 is caused to contract medially as the clamping portion 12 is driven deeper 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, an anchor sleeve 10. The pressurizing device is composed of a clamping part 12 and a guide part 14 which are conical, and the pressurizing device is provided with a central hole 124, and the central hole 124 is used for placing the suture thread 2; the pressurizing device is provided with a plurality of clamping heads, a gap 122 exists between adjacent clamping heads, the gap 122 is communicated with the central hole 124, when the pressurizing device is pressurized, the gap 122 can shrink, the diameter of the central hole 124 can be reduced, and therefore the suture 2 in the central hole 124 can be clamped.
Specifically, the anchor sleeve 10 is provided with a conical bore therein to facilitate engagement with the conical clamping portion 12 of the compression device. When the compression device is used, the suture 2 is firstly penetrated into the central hole 124 of the compression device, then the compression device is arranged in the anchor sleeve 10, and the clamping part 12 of the compression device is in interference fit with the conical hole of the anchor sleeve 10. When the suture anchor component 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 cause each clamping head 120 to contract towards the middle, and then the suture thread 2 is clamped, namely the thread ends at the two ends of the suture thread 2 can be clamped in the central hole 124, so that the knotless suture technology is realized; meanwhile, with the continuous screwing-in of the anchor sleeve 10, as the clamping part 12 of the pressurizing device is in interference fit with the anchor sleeve 10 or the guiding part 14 of the pressurizing device is abutted against the anchor sleeve 10, the pressurizing device can be pushed into the deeper part of the human body along with the screwing-in of the anchor sleeve 10, so that the suture 2 is tensioned, and the tightness adjustment of the suture 2 is realized by adjusting the screwing-in depth of the anchor sleeve 10.
The suture anchor subassembly of above-mentioned embodiment can solve the suture of ligament tendon class disease fast effectively and fix and the difficult problem of stylolite 2 knot, and its beneficial effect mainly lies in:
(1) the pressure is pressed in the central hole 124 of the pressurizing device, the operation is simple and safe, and the operation time and the clinical learning curve of a doctor are shortened.
(2) The pressure means is in a conical fit with the anchor sleeve 10 such that the further the pressure means is inserted into the anchor sleeve 10, the more firmly the suture 2 is pressed, or the further the anchor sleeve 10 is screwed in, the more firmly the suture 2 is pressed.
The technical scheme of the utility model is described in detail in the above with the attached drawings, and through the technical scheme of the utility model, the two ends of the suture are clamped in the pressurizing device at the same time, thus avoiding the suture from being cut and damaged by the external thread of the rivet sleeve due to being pulled too tightly and avoiding knotting; the tension of the suture can be adjusted by adjusting the implantation depth of the anchor sleeve, the suture is prevented from being too loose or too tight, the operation difficulty is reduced, and the efficiency and the safety of the operation are improved.
In the present application, the terms "first", "second", "third" 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 limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means 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 invention. In this specification, the schematic representations of the terms used above 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, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. 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;
the clamping part is at least partially arranged in the axial hole, a plurality of clamping heads are arranged on the clamping part, a gap is formed between at least two clamping heads, the gap is used for placing a suture,
when the clamping portion extends into the anchor sleeve, at least part of the hole wall of the axial hole is in interference fit with the clamping portion, so that gaps among the clamping heads are reduced to clamp the suture in the gaps.
2. The suture anchor assembly of claim 1,
at least one of the inner wall of the anchor sleeve and the clamping portion is tapered.
3. The suture anchor assembly of claim 2,
the inner wall of the anchor sleeve and the clamping portion are both conical and have the same taper.
4. The suture anchor assembly of claim 3,
the clamping part is provided with a central hole, the chucks are symmetrically distributed along the axis of the central hole, and the clamping surfaces of the chucks jointly form the hole wall of the central hole.
5. The suture anchor assembly of any one of claims 1-4, further comprising:
the guide part is arranged at the tail part of the clamping part, and a guide inclined plane or a guide curved surface is arranged on the guide part so as to guide when the suture anchor assembly is implanted into a human body.
6. The suture anchor assembly of claim 5,
when the clamping part completely extends into the axial hole, the guide part is abutted against the tail part of the anchor sleeve.
7. The suture anchor assembly of claim 5,
the guide part is provided with a through groove communicated with the gap, the guide part is divided into at least two parts by the through groove, the at least two parts are connected through a connecting part, and the connecting part is also used for being wound by the suture; and/or
The head of the anchor sleeve is provided with a counter bore for inserting a tightening tool.
8. The suture anchor assembly of any one of claims 1-4,
and a buffer layer is arranged on the clamping surface of the chuck.
9. The suture anchor assembly of any one of claims 1-4,
the inner wall of the anchor sleeve and the outer wall of the clamping part are provided with conical threads which are matched with each other.
10. The suture anchor assembly of claim 1,
the clamping part is hemispherical or semi-ellipsoidal, and the axial hole is conical or cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920300395.5U CN209808442U (en) | 2019-03-11 | 2019-03-11 | Suture anchor assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920300395.5U CN209808442U (en) | 2019-03-11 | 2019-03-11 | Suture anchor assembly |
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| CN209808442U true CN209808442U (en) | 2019-12-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109730734A (en) * | 2019-03-11 | 2019-05-10 | 浙江科惠医疗器械股份有限公司 | Suture anchor assemblies |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109730734A (en) * | 2019-03-11 | 2019-05-10 | 浙江科惠医疗器械股份有限公司 | Suture anchor assemblies |
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