CN210962133U - Round sheath suture anchor and implantation device - Google Patents
Round sheath suture anchor and implantation device Download PDFInfo
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- CN210962133U CN210962133U CN201920963440.5U CN201920963440U CN210962133U CN 210962133 U CN210962133 U CN 210962133U CN 201920963440 U CN201920963440 U CN 201920963440U CN 210962133 U CN210962133 U CN 210962133U
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Abstract
The utility model provides a round sheath suture anchor nail and implantation device, including suture, round sheath, the round sheath is hollow structure, round sheath middle part is provided with the trompil, the round sheath is at least one, when having a plurality of round sheaths, the suture is worn out to the other end from one end of first round sheath, two free ends of suture that are located first round sheath both ends are respectively worn into second round sheath from the middle trompil or both ends of second round sheath, and then are respectively worn out from both ends or middle trompil of second round sheath, repeat this step and penetrate the suture to a plurality of round sheaths; the circular sheath with the thread is implanted into the positioning hole on the bone tissue, and the circular sheath can be shrunk into a group and anchored in the positioning hole by tightening the two ends of the thread. The utility model discloses a full suture anchor has that it is little to implant the bone way, and the bone removes the volume and is few, and it is easy to reprocess, advantages such as replaceability is strong to have good biocompatibility. The utility model discloses simple structure, the processing ease, it is fixed convenient, firm, anti extraction dynamic height.
Description
Technical Field
The utility model relates to the field of medical equipment, specifically, relate to a round sheath suture anchor and implantation device.
Background
In recent years, the suture anchor technology using titanium alloy, PEEK (polyether ether ketone) and polylactic acid as materials is widely used for repairing the damage of the soft tissue and bone tissue junction, such as: rotator cuff injury, labral injury, femoral proximal tendon injury, injury to the anterior and posterior aspects of the labrum on the shoulder joint, ulnar collateral ligament injury reconstruction, biceps brachii distal tendon injury, navicular intercostal ligament repair, triangular fibrocartilage repair, extensor tendon injury repair, and the like. The hard anchor is screwed on the bone tissue near the position needing to be fixed like a screw, the preloaded suture on the anchor penetrates through the soft tissue needing to be repaired, and the soft tissue is contacted and fixed with the surface of the bone tissue by binding and tightening the suture, so that the physical repair of the damaged tissue is completed.
As the application of hard material anchor technology is becoming more extensive, the hard material anchor is known to have a plurality of defects that the titanium alloy metal anchor is easy to generate inflammation due to rejection reaction after being implanted, so that bone dissolution occurs at the implanted position, the anchor is loosened and displaced, and the fixation failure is caused.
Patent document CN202313533U discloses a full-thread suture anchor comprising: the anchor body forms the main structure of the product, and the periphery of the anchor body is provided with threads; the threading structure is arranged inside the anchor body, a channel is formed in the anchor body, and threading holes serving as openings at two ends of the threading structure are respectively arranged at positions corresponding to peripheral threads of the anchor body; the suture sets up inside above-mentioned threading structure, and the both ends of suture correspond different through wires holes respectively, and the inside threading structure of anchor body is the single channel structure of whole intercommunication. The threading structure is simpler, the time required for product processing is reduced, and the working efficiency is improved. Set up the arc recess in the screw thread position corresponding to through wires hole position to can make things convenient for the suture to penetrate in the through wires hole more. In addition, the two ends of the suture are respectively knotted at the corresponding arc-shaped grooves, so that the suture cannot be separated from the anchor nail body, and the hidden danger in the operation is reduced. However, the anchor using the hard structure is liable to cause rejection reaction or dissolution to cause problems such as loosening and displacement, and the anchor is fixed to bone tissue by a screw, and is not easy to install.
SUMMERY OF THE UTILITY MODEL
To the deficiencies in the prior art, it is an object of the present invention to provide a round sheath suture anchor and implantation device.
According to an aspect of the present invention, there is provided a round sheath suture anchor, comprising a suture and a round sheath, wherein the round sheath is a hollow structure, the middle of the round sheath is provided with an opening, the round sheath is at least one, when a plurality of round sheaths are provided, the suture is threaded out from one end of a first round sheath to the other end, two free ends of the suture at two ends of the first round sheath are respectively threaded into a second round sheath from the middle opening or two ends of the second round sheath, and then respectively threaded out from the two ends or the middle opening of the second round sheath, two free ends of the suture at two ends of the second round sheath are respectively threaded into a third round sheath from the middle opening or two ends of the third round sheath, and then respectively threaded out from the two ends or the middle opening of the third round sheath, and repeating the above steps to thread the suture into the plurality of round sheaths;
implanting the circular sheath with the suture thread into a positioning hole in bone tissue, and tightening the two ends of the suture thread to enable the circular sheath to be folded into a cluster, wherein the volume of the clustered circular sheath is increased, and the size of the circular sheath is larger than that of the positioning hole and is anchored in the positioning hole;
the round sheath is straight or U-shaped before being folded.
Preferably, the wall of the round sheath is also provided with a plurality of openings, the suture positioned in the round sheath penetrates out of one opening, then penetrates into the round sheath from the adjacent opening, and repeatedly penetrates in, and finally the two free ends of the suture penetrate out of the middle opening or the two ends of the round sheath.
Preferably, the suture is a flat suture or a round suture, and the suture is a suture woven by ultra-high molecular weight polyethylene yarns.
Preferably, the round sheath is a hollow cylindrical braided fabric formed by braiding polyethylene terephthalate.
Preferably, when the suture positioning hole is implanted into bone tissue, the round sheath penetrated with the two free ends of the suture is positioned below the other round sheaths, namely the round sheath penetrated with the two free ends of the suture is closer to the bottom of the positioning hole than the other round sheaths penetrated by the suture.
Preferably, the distance between the holes on the round sheath is 3-5mm, and the distance between the holes at the two ends of the round sheath and the two ends is 1 mm.
Preferably, the openings on the round sheath are distributed equidistantly, and the number of the openings is even.
Preferably, each round sheath of the threaded suture is of an axisymmetric structure.
Preferably, the middle position of the first round sheath is fixed with the suture or can slide relatively.
According to another aspect of the utility model, provide an implantation device, including the roof ware with round sheath suture anchor, the roof ware with round sheath suture anchor roof in the locating hole.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses a full suture anchor has that it is little to implant the bone way, and the bone removes the volume and is few, and it is easy to reprocess, advantages such as replaceability is strong to have good biocompatibility.
2. The utility model discloses simple structure, the processing ease, it is fixed convenient, firm, anti extraction dynamic height.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural view before implantation of the present invention.
Fig. 2 is a schematic structural view of the utility model after the tightening suture is implanted.
Fig. 3 is a schematic structural view of another pre-implantation structure of the present invention.
The figures show that:
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The utility model discloses an overcome the defect of hard material anchor nail, designed round sheath suture anchor nail, it is little to have implant bone way, and the bone removes the volume and is few, reprocesses easily, but replaceability advantage such as outstanding to there is good biocompatibility. The utility model discloses a plurality of circle sheaths have improved the fixed strength of full suture anchor nail in the bone way, and it is little to solve full suture anchor deformation, the not enough shortcoming of fixed strength. The utility model discloses use flat suture as raw and other materials, to the cutting damage of soft tissue when reducing the fixed soft tissue of suture.
According to an aspect of the present invention, there is provided a round sheath suture anchor, as shown in fig. 1-3, comprising a suture and a round sheath, wherein the round sheath is a hollow structure, the middle of the round sheath is provided with an opening, the number of the round sheath is at least one, when a plurality of round sheaths are provided, the suture is threaded out from one end of a first round sheath to the other end, two free ends of the suture at two ends of the first round sheath are respectively threaded into a second round sheath from the middle opening or two ends of the second round sheath, and then respectively threaded out from the two ends or the middle opening of the second round sheath, two free ends of the suture at two ends of the second round sheath are respectively threaded into a third round sheath from the middle opening or two ends of the third round sheath, and then respectively threaded out from the two ends or the middle opening of the third round sheath, and repeating the above steps to thread the suture into the plurality of round sheaths; implanting the circular sheath with the suture thread into a positioning hole in bone tissue, and tightening the two ends of the suture thread to enable the circular sheath to be folded into a cluster, wherein the volume of the clustered circular sheath is increased, and the size of the circular sheath is larger than that of the positioning hole and is anchored in the positioning hole; the round sheath is straight or U-shaped before being folded. The suture and the round sheath can slide relatively. Preferably, two round sheaths are included, as shown in fig. 1 or 3.
The wall of the round sheath is also provided with a plurality of openings, the suture positioned in the round sheath penetrates out of one opening, penetrates into the round sheath from the adjacent opening and repeatedly penetrates in, and finally the two free ends of the suture penetrate out of the middle opening or the two ends of the round sheath.
The suture is a flat suture or a round suture, and the suture is formed by weaving ultrahigh molecular weight polyethylene yarns. The width of the flat suture is 1 mm. The round sheath is a hollow cylindrical braided fabric formed by braiding polyethylene terephthalate. The width or diameter of the suture is slightly smaller than the diameter of the round sheath, so that the suture and the round sheath can slide relatively.
When the suture positioning hole is implanted into bone tissue, the round sheaths penetrated with the two free ends of the suture are positioned below other round sheaths, namely the round sheaths penetrated with the two free ends of the suture are closer to the bottom of the positioning hole than the other round sheaths penetrated by the suture. As shown in fig. 2, the second round sheath with two free ends of the suture is positioned below the first round sheath (without two free ends of the suture) with the suture passing through, and is closer to the bottom of the positioning hole.
The distance between the holes on the circular sheath is 3-5mm, the distance between the holes at the two ends of the circular sheath and the two ends is 1mm, and the number of the holes is 4-8. The larger the opening pitch, the smaller the number of openings. The holes on the round sheath are distributed at equal intervals, and the number of the holes is even. Each round sheath penetrated with the suture is in an axisymmetric structure. The middle position of the first round sheath is fixed with the suture or can slide relatively.
According to another aspect of the utility model, provide an implantation device, including the roof ware with round sheath suture anchor, the roof ware with round sheath suture anchor roof in the locating hole.
As shown in figure 1 or 3, when the circular sheath is implanted, the middle section of the second circular sheath is implanted into the drilled locating hole by using the ejector, after the circular sheath is implanted to the required depth, the thimble of the ejector is withdrawn, and the suture is tightened together. As shown in fig. 2, when the round sheath suture anchor is implanted into the bone canal, the second round sheath is positioned below the first round sheath, the first round sheath can be pulled downwards due to the tightening of the length of the suture, and the first round sheath can be forced to tighten when the suture is continuously tightened after the first round sheath is collided downwards with the second round sheath because the two ends of the first round sheath are in a sliding structure with the suture. The second round sheath moves upwards due to suture tightening and is coiled into a wire coil after being blocked by the first round sheath. When the second round sheath coil and the first round sheath coil are squeezed together, a coil with a size larger than that of the positioning hole is formed, and the anchor is anchored in the positioning hole. The anchoring can be disabled only when the second round sheath is pulled out firstly, and the coil of the second round sheath can be pulled out firstly only when the coil of the second round sheath is extruded above the coil of the first round sheath, which is difficult to achieve in a narrow bone passage (positioning hole), so that the round sheath suture anchor formed in the way can obtain higher fixing strength.
As shown in fig. 1-3, when the round sheath suture anchor is implanted into the bone passage, the second round sheath is arranged below the first round sheath, the suture is drawn, the first round sheath is drawn downwards due to the tightening of the length of the suture, and the second round sheath is also subjected to an upward pulling force due to the tightening of the suture after the first round sheath hits the second round sheath in the narrow bone passage. Due to the fact that the suture is pulled upwards, the second round sheath is pulled preferentially, but the first round sheath blocks the outward path and cannot be pulled out, the suture is continuously tightened to enable the round sheath to be folded, and the second round sheath and the first round sheath can discharge bone substances around to form a coil larger than a bone channel (positioning hole), so that good fixing strength is obtained. The significance of the double round sheath is to further increase the fixation strength of the anchor. The first round sheath is arranged above the second round sheath, and the second round sheath must be pulled out firstly when the first round sheath fails, so that the positioning hole must be in a size which can allow 2 round sheaths to pass through simultaneously when the anchor is about to fail. This hole is necessarily much larger than the hole diameter through which a single round sheath passes, and thus, the double sheath can further increase the anchor fixation strength.
When the anchor needs to be replaced, the suture on the round sheath at the topmost end of the positioning hole is broken, for example, the suture is cut off, the two free ends of the suture are pulled after the suture is cut off, the suture can be separated from the round sheath, the anchor is made to be invalid, and the new anchor can be replaced after the suture is made to be invalid.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A round sheath suture anchor is characterized by comprising a suture and round sheaths, wherein the round sheaths are of a hollow structure, openings are formed in the middle of the round sheaths, at least one round sheath is arranged, when a plurality of round sheaths are arranged, the suture penetrates out of one end of a first round sheath to the other end, two free ends of the suture positioned at two ends of the first round sheath penetrate into a second round sheath from the middle opening or two ends of a second round sheath respectively and then penetrate out of two ends or middle openings of the second round sheath respectively, two free ends of the suture positioned at two ends of the second round sheath penetrate into a third round sheath from the middle opening or two ends of the third round sheath respectively and then penetrate out of two ends or middle openings of the third round sheath respectively, and the steps are repeated to penetrate the suture into the round sheaths;
implanting the circular sheath with the suture thread into a positioning hole in bone tissue, and tightening the two ends of the suture thread to enable the circular sheath to be folded into a cluster, wherein the volume of the clustered circular sheath is increased, and the size of the circular sheath is larger than that of the positioning hole and is anchored in the positioning hole;
the round sheath is straight or U-shaped before being folded.
2. The round sheath suture anchor of claim 1, wherein the wall of the round sheath is further provided with a plurality of openings, the suture in the round sheath passes through one opening, then passes through the adjacent openings into the round sheath, and repeatedly passes through, and finally passes through the two free ends of the suture from the middle opening or the two ends of the round sheath.
3. The round sheath suture anchor of claim 1, wherein the suture is a flat suture or a round suture, and the suture is a suture woven from ultra high molecular weight polyethylene yarn.
4. The round sheath suture anchor of claim 1, wherein the round sheath is a hollow cylindrical structural braid woven from polyethylene terephthalate.
5. The round sheath suture anchor of claim 1, wherein when implanted into a pilot hole in bone tissue, the round sheath with the two free ends of the suture is positioned below the other round sheath, i.e., the round sheath with the two free ends of the suture is closer to the bottom of the pilot hole than the other round sheath with the suture passing through.
6. The round sheath suture anchor of claim 2, wherein the openings in the round sheath are spaced 3-5mm apart and the openings at the two ends of the round sheath are spaced 1mm apart.
7. The round sheath suture anchor of claim 2, wherein the openings in the round sheath are equally spaced, the number of openings being an even number.
8. The round sheath suture anchor of claim 1, wherein each round sheath of the threaded suture is of an axisymmetric configuration.
9. The round sheath suture anchor of claim 1, wherein the first round sheath is fixed or slidable relative to the suture at a central location.
10. An implantation device comprising an impactor and the round sheath suture anchor of any one of claims 1 to 9, wherein the impactor ejects the round sheath suture anchor into the pilot hole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920963440.5U CN210962133U (en) | 2019-06-25 | 2019-06-25 | Round sheath suture anchor and implantation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920963440.5U CN210962133U (en) | 2019-06-25 | 2019-06-25 | Round sheath suture anchor and implantation device |
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| CN210962133U true CN210962133U (en) | 2020-07-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110215245A (en) * | 2019-06-25 | 2019-09-10 | 上海利格泰生物科技有限公司 | Circle sheath suture holdfast and implanted device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110215245A (en) * | 2019-06-25 | 2019-09-10 | 上海利格泰生物科技有限公司 | Circle sheath suture holdfast and implanted device |
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Address after: Room 301, building 1, 508 Tianchen Road, Qingpu District, Shanghai, 201712 Patentee after: Shanghai Ligetai Biotechnology Co.,Ltd. Address before: Room 301, building 1, 508 Tianchen Road, Qingpu District, Shanghai, 201712 Patentee before: SHANGHAI LIGETAI BIOLOGICAL TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |