CN220045964U - Degradable anchor nail structure for rotator cuff fracture joint - Google Patents
Degradable anchor nail structure for rotator cuff fracture joint Download PDFInfo
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- CN220045964U CN220045964U CN202321342418.1U CN202321342418U CN220045964U CN 220045964 U CN220045964 U CN 220045964U CN 202321342418 U CN202321342418 U CN 202321342418U CN 220045964 U CN220045964 U CN 220045964U
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- anchor
- degradable
- rotator cuff
- tail
- fixing
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- 210000000513 rotator cuff Anatomy 0.000 title claims abstract description 31
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 39
- 210000002435 tendon Anatomy 0.000 claims abstract description 20
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 15
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 230000001737 promoting effect Effects 0.000 abstract description 6
- 208000027418 Wounds and injury Diseases 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 abstract description 4
- 208000014674 injury Diseases 0.000 abstract description 4
- 210000000323 shoulder joint Anatomy 0.000 description 7
- 239000011777 magnesium Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 208000024288 Rotator Cuff injury Diseases 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 239000011575 calcium Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 210000002758 humerus Anatomy 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229920000747 poly(lactic acid) Polymers 0.000 description 2
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 206010067484 Adverse reaction Diseases 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 206010060820 Joint injury Diseases 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 230000006838 adverse reaction Effects 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000003110 anti-inflammatory effect Effects 0.000 description 1
- 230000000259 anti-tumor effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000008468 bone growth Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 230000010261 cell growth Effects 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000007857 degradation product Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000002138 osteoinductive effect Effects 0.000 description 1
- 229920002643 polyglutamic acid Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model discloses a degradable anchor structure for rotator cuff fracture joint, which comprises an anchor main body, wherein the anchor main body is provided with a fixing structure, the anchor main body comprises an anchor head part, an anchor middle part and an anchor tail part which are sequentially connected, the anchor tail part is of a flat structure capable of deforming, tendons are pressed on bone tissues at a tearing position by the anchor tail part through deformation, and the whole anchor main body is fixed on the bone tissues by the fixing structure. The degradable anchor structure can be degraded and absorbed in organisms, has good biocompatibility, and avoids the injury to patients caused by secondary operation extraction; the tail part of the anchor nail is of a flat structure, so that the tendon is pressed on the bone tissue at the avulsion position by deformation in operation, and the whole anchor nail main body is fixed on the bone tissue by the fixing structure. Compared with the traditional suture anchor, the suture anchor has the advantages of simple structure, convenient use, time and labor saving, and capability of effectively improving the operation effect, thereby promoting the repair of the rotator cuff fracture.
Description
Technical Field
The utility model belongs to the technical field of medical appliances, and particularly relates to a degradable anchor structure for rotator cuff fracture joint.
Background
The rotator cuff, also called rotator cuff, is composed of tendons of supraspinatus, subglotteric, small circular muscle and subscapular muscle from the upper end of the humerus, and the tendons of the 4 muscles are tightly attached to the shoulder joint capsule when passing over, behind and in front of the shoulder joint, and are connected to form an approximately annular tendon plate around the shoulder joint, which plays an important role in the stability of the shoulder joint. Rotator cuff fracture is one of the most common shoulder joint injuries, and is typically torn off from the site of attachment to the bone. The current mainstream mode of rotator cuff tear surgery is repair reconstruction by using a band wire anchor under an arthroscope. In the repair, the rotator cuff cannot be directly sewn to the bone, and the rotator cuff needs to be fixed by using rivets with wires. Such rivets are known as tape rivets. In the case of a rotator cuff tear, the string rivet is first implanted into the bone, i.e., the rotator cuff region that is attached to the greater tuberosity of the humerus. Then, the thread at the tail end of the rivet passes through the torn rotator cuff tissue stump, and the rotator cuff is tightly fixed on the skeleton by knotting, so as to achieve the repairing effect.
However, there are some drawbacks to the use of the string anchors to treat rotator cuff fracture: (1) The use of the band wire anchor in the operation requires frequent tool switching and is troublesome to operate. (2) The suture needs to be repeatedly tied up during suture, the operation time is long, a large amount of flushing liquid is needed to obtain clear vision, the shoulder joint edema of a patient can be serious due to long-time arthroscopy operation, the pain of the patient is increased, and the later recovery is not facilitated. For chronic or old rotator cuff tears, patients who need to implant tissue patches often need to puncture the lead multiple times, easily tearing the normal rotator cuff. (3) In rotator cuff fracture repair, tendon fixation using a tendinous bone joining technique is indispensable. However, the conventional staples are easily detached and are required to be removed, and it is generally required to wait 3-4 weeks for the removal, and also required to perform functional exercises of the shoulder joints to restore the normal state. (4) Current stripline anchor materials mainly include Polyglycolide (PGA) and Polylactide (PLA), which have insufficient mechanical strength and are prone to fracture resulting in anchor failure. Accordingly, there is an urgent clinical need to develop new degradable anchors to provide more stable mechanical support.
Disclosure of Invention
The utility model aims to provide a degradable anchor structure for rotator cuff fracture joint, which is used for solving the problems in the prior art.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a raglan sleeve fracture is with degradable anchor structure, includes the anchor main part, the anchor main part has set fixed knot constructs, and the anchor main part is including anchor head, anchor middle part and the anchor afterbody that connect gradually, the anchor afterbody is the flat structure that can produce the deformation, and the anchor afterbody is pressed the tendon on the bone tissue of avulsion position through producing the deformation to make whole anchor main part fix on bone tissue through fixed knot constructs.
As an optional implementation manner of the above technical solution, the fixing structure includes a fixing member, and the anchor tail is provided with a fixing hole adapted to the fixing member, and the fixing member is used for fixing the anchor tail on the bone tissue.
As an alternative embodiment of the foregoing technical solution, the fixing member includes a fixing screw, and the fixing screw is connected to the bone tissue after passing through a fixing hole of the tail portion of the anchor.
As an alternative implementation manner of the above technical solution, the fixing screw is made of magnesium alloy.
As an optional implementation manner of the above technical solution, the fixing structure includes a barb structure, and the barb structure is disposed in the middle of the anchor.
As an optional implementation manner of the above technical solution, the barb structure includes a plurality of barb sets, and the plurality of barb sets are disposed along a length direction of the middle portion of the anchor.
As an optional implementation manner of the above technical solution, the barb set includes a plurality of barbs, and the plurality of barbs are annularly arranged on the surface of the middle part of the anchor.
As an alternative to the above, the tail portion of the anchor may be bent or twisted.
As an alternative embodiment of the foregoing technical solution, the anchor head is conical.
As an optional implementation manner of the technical scheme, the anchor head, the anchor middle and the anchor tail are integrally formed, and the anchor main body is made of magnesium alloy.
As an optional implementation manner of the above technical solution, a transition slope is provided between the anchor middle part and the anchor tail part.
As an optional implementation manner of the above technical solution, the tail portion of the anchor is provided with a tabletting structure, and the tabletting structure is used for reinforcing fixation of bone tissue and tendons.
The beneficial effects of the utility model are as follows:
the degradable anchor structure can be degraded and absorbed in organisms, has good biocompatibility, and avoids the injury to patients caused by secondary operation extraction; the tail part of the anchor nail is of a flat structure, so that the tendon is pressed on the bone tissue at the avulsion position by deformation in operation, and the whole anchor nail main body is fixed on the bone tissue by the fixing structure. Compared with the traditional suture anchor, the suture anchor has the advantages of simple structure, convenient use, time and labor saving, and capability of effectively improving the operation effect, thereby promoting the repair of the rotator cuff fracture.
Drawings
FIG. 1 is a schematic structural view of a degradable anchor structure in one embodiment of the present utility model;
figure 2 is a schematic illustration of the configuration of the barb structure in one embodiment of the present utility model;
fig. 3 is a schematic structural view of a degradable anchor structure in another embodiment of the present utility model.
In the figure: 1-anchor head; 2-the middle part of the anchor nail; 3-tail of anchor; 4-fixing holes; a 5-barb structure; 6-barb; 7-transition ramp; 8-tabletting structure.
Detailed Description
Examples
As shown in fig. 1-3, the present embodiment provides a degradable anchor structure for rotator cuff fracture joint, which includes an anchor body provided with a fixing structure for fixing the anchor body to bone tissue. Specifically, the anchor main body comprises an anchor head part 1, an anchor middle part 2 and an anchor tail part 3 which are sequentially connected, wherein the anchor head part 1 is conical, and the anchor main body is convenient to implant. The anchor tail 3 is of a flat configuration which can be deformed, such as bent or twisted. The transition slope 7 is arranged between the anchor middle part 2 and the anchor tail part 3, which is favorable for bending or twisting the anchor tail part 3, the anchor tail part 3 presses tendons on bone tissues at the avulsion position after bending or twisting, and the whole anchor main body is fixed on the bone tissues through the fixing structure.
The degradable anchor structure can be degraded and absorbed in organisms, has good biocompatibility, and avoids the injury to patients caused by secondary operation extraction; the tail part 3 of the anchor is of a flat structure, so that the tendon is pressed on the bone tissue at the avulsion position by deformation in operation, and the whole anchor main body is fixed on the bone tissue by the fixing structure. Compared with the traditional suture anchor, the suture anchor has the advantages of simple structure, convenient use, time and labor saving, and capability of effectively improving the operation effect, thereby promoting the repair of the rotator cuff fracture.
As shown in fig. 1, in this embodiment, the fixing structure includes a fixing member, and the anchor tail 3 is provided with a fixing hole 4 adapted to the fixing member, and the fixing member is used for fixing the anchor tail 3 to bone tissue. The tendon is pressed against the bone tissue at the tear-off position by bending or twisting the tail portion 3 of the anchor, and then the anchor body is fixed to the bone tissue with the fixing member. Specifically, the fixing member includes a fixing screw which is connected to bone tissue after passing through the fixing hole 4 of the anchor tail 3, preventing the anchor body from loosening. Wherein, the fixing screw is made of magnesium alloy.
In this embodiment, the fixation structure further comprises a barb structure 5, the barb structure 5 being arranged in the anchor middle 2. The anchor main body is inserted into bone tissue, and the barb structure 5 fixes the anchor main body, so that the anchor main body can be effectively prevented from falling off from the bone tissue.
As shown in fig. 2, the barb structure 5 preferably comprises a number of barb sets, and the number of barb sets are arranged along the length of the anchor middle 2. Further, the barb set comprises a plurality of barbs 6, and the plurality of barbs 6 are annularly arranged on the surface of the anchor middle 2. The arrangement of the barbs 6 can increase the pulling-out resistance of the anchor main body, and effectively improve the use effect of the degradable anchor structure, thereby promoting the repair of the rotator cuff fracture.
The anchor head 1, the anchor middle 2 and the anchor tail 3 are integrally formed, so that the strength of the anchor main body is ensured. The anchor main body is made of magnesium alloy. Biomedical magnesium alloys have received wide attention in recent years as a representative of a new generation of degradable biomedical materials, and compared with conventional implantable biomedical metals, the degradable biomedical magnesium alloys have the following advantages: (1) Biodegradation, anti-inflammatory, anti-tumor, antibacterial, osteoinductive; (2) The comprehensive mechanical property is better than that of polymer materials, and the elastic modulus is 45GPa which is closer to that of human bones than other medical metal materials, so that the uncomfortable feeling brought to the human body during the service period of the human body can be obviously reduced; (3) The human body contains a large amount of magnesium element, so when the biomedical magnesium alloy is used as an implantation material to be implanted into the human body, adverse reaction to the human body is avoided, and the biocompatibility is better; (4) The in vivo degradation can be carried out without taking out the material by a secondary operation, so that the burden of a patient is reduced, and secondary injury is avoided; (5) Magnesium can stimulate cell growth, support group regeneration, etc. The anchor main body and the fixing screw are both made of absorbable materials, and can be gradually degraded and promote the combination of tendons and bone tissues after being implanted into a human body, and the anchor main body and the fixing screw are taken out without secondary operation.
In one embodiment, the magnesium alloy includes a plurality of rare earth elements. Specifically, the magnesium alloy comprises the following components in percentage by weight: 1% -3% of neodymium (Nd), 1% -2% of yttrium (Y), 0.3% -2% of zinc (Zn), 0.3% -0.6% of zirconium (Zr) and the balance of magnesium (Mg). In another embodiment, the magnesium alloy comprises the following components in percentage by weight: 1-3% of zinc (Zn), 0-2% of calcium (Ca) and the balance of magnesium (Mg).
As shown in fig. 3, as an alternative implementation of the present embodiment, the anchor tail 3 is provided with a tabletting structure 8, and the tabletting structure 8 is used for reinforcing fixation of bone tissue and tendons. The compression structure 8 has two annular compression sheets, and the design of the compression structure 8 can strengthen tendon fixation, thereby promoting biological combination between tendons and bone tissues.
In actual operation, the degradable anchor structure of the utility model firstly drills holes at corresponding positions of the torn bone tissues, inserts the anchor main body into the bottom end of the pore canal, bends or twists the anchor tail 3, presses tendons on the bone tissues at the torn position, strengthens and fixes the tendons by utilizing the tabletting structure 8, and finally uses fixing screws to penetrate through the fixing holes 4 of the anchor tail 3 and screw into the bone tissues so as to achieve the effect of anchor fixation.
The degradable anchor structure of the utility model has the following advantages:
1. the mechanical strength is good, the mechanical modulus of the degradable metal magnesium alloy is matched with the bone tissue of a human body, and the stress shielding effect of the traditional medical metal material in clinic can be effectively relieved.
2. The magnesium alloy has excellent effect of promoting bone growth due to the magnesium ions released by degradation, so that the healing of the avulsion part can be accelerated.
3. The magnesium alloy can be degraded in organisms, and degradation products are nontoxic and absorbable, so that secondary extraction operation is avoided.
In the description of the present utility model, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be fixedly connected, detachably connected, or integrally formed; may be a mechanical or electrical connection; may be directly connected or indirectly connected through an intermediate medium, and may be in communication with the inside of two elements or in interaction with the two elements, the specific meaning of the terms being understood by those skilled in the art. Furthermore, the particular features, structures, etc. described in the examples are included in at least one embodiment and those of skill in the art may combine features of different embodiments without contradiction. The scope of the present utility model is not limited to the above-described specific embodiments, and embodiments which can be suggested to those skilled in the art without inventive effort according to the basic technical concept of the present utility model are all within the scope of the present utility model.
Claims (10)
1. The utility model provides a broken joint of rotator cuff is with degradable anchor structure, includes the anchor main part, the anchor main part has set fixed knot constructs, its characterized in that, anchor main part is including anchor head (1), anchor middle part (2) and anchor afterbody (3) that connect gradually, anchor afterbody (3) are the flat structure that can produce the deformation, and anchor afterbody (3) are pressed the tendon on the bone tissue of avulsion position through producing the deformation to make whole anchor main part fix on bone tissue through fixed knot constructs.
2. The degradable anchor structure for rotator cuff fracture joint according to claim 1, characterized in that the fixing structure comprises a fixing member, the anchor tail (3) is provided with a fixing hole (4) adapted to the fixing member, and the fixing member is used for fixing the anchor tail (3) on bone tissue.
3. The degradable anchor structure for rotator cuff fracture joint according to claim 2, wherein the fixing member comprises a fixing screw which is connected to bone tissue after passing through a fixing hole (4) of the anchor tail (3); the fixing screw is made of magnesium alloy.
4. The degradable anchor structure for rotator cuff fracture joint according to claim 1, wherein the securing structure comprises a barb structure (5), the barb structure (5) being provided in the anchor middle (2).
5. The degradable anchor structure for rotator cuff breaking engagement according to claim 4, characterized in that the barb structure (5) comprises a number of barb sets, and the number of barb sets are arranged along the length direction of the anchor middle (2).
6. The degradable anchor structure for rotator cuff breaking engagement according to claim 5, wherein the barb set comprises a plurality of barbs (6), and wherein the plurality of barbs (6) are annularly arranged on the surface of the anchor middle portion (2).
7. Degradable anchor structure for rotator cuff breaking engagement according to claim 1, characterized in that the anchor tail (3) is bendable or torsionable.
8. Degradable anchor structure for rotator cuff breaking engagement according to claim 1, characterized in that the anchor head (1) is conical; a transition slope (7) is arranged between the anchor middle part (2) and the anchor tail part (3).
9. The degradable anchor structure for rotator cuff fracture joint according to claim 1, wherein the anchor head (1), the anchor middle (2) and the anchor tail (3) are integrally formed, and the anchor body is made of magnesium alloy.
10. Degradable anchor structure for rotator cuff breaking engagement according to claim 1, characterized in that the anchor tail (3) is provided with a tabletting structure (8), which tabletting structure (8) is used for reinforcing the fixation of bone tissue with tendons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321342418.1U CN220045964U (en) | 2023-05-30 | 2023-05-30 | Degradable anchor nail structure for rotator cuff fracture joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321342418.1U CN220045964U (en) | 2023-05-30 | 2023-05-30 | Degradable anchor nail structure for rotator cuff fracture joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220045964U true CN220045964U (en) | 2023-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321342418.1U Active CN220045964U (en) | 2023-05-30 | 2023-05-30 | Degradable anchor nail structure for rotator cuff fracture joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220045964U (en) |
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2023
- 2023-05-30 CN CN202321342418.1U patent/CN220045964U/en active Active
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