CN116019604A - Implant structure for reconstruction of anterior cruciate ligament - Google Patents
Implant structure for reconstruction of anterior cruciate ligament Download PDFInfo
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- CN116019604A CN116019604A CN202310301439.7A CN202310301439A CN116019604A CN 116019604 A CN116019604 A CN 116019604A CN 202310301439 A CN202310301439 A CN 202310301439A CN 116019604 A CN116019604 A CN 116019604A
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Abstract
The invention discloses an implant structure for reconstruction of anterior cruciate ligament, which relates to the technical field of medical appliances and comprises the following components: the connecting part comprises two bundles of artificial ligaments, and the end parts of the two bundles of artificial ligaments are respectively connected; the implant part comprises implant ends which are respectively arranged at two ends of the connecting part, the implant ends are hollow cavities, one end of each implant end is provided with a first communication hole, the other end of each implant end is provided with two second communication holes, the first communication holes are communicated with the second communication holes through the communication pipes, the middle parts of two bundles of artificial ligaments respectively penetrate through the second communication holes, the implant ends are provided with fixing structures, and the fixing structures can connect the implant part with bones; the implant structure is directly embedded into the bone through the two implantation ends, a bone marrow passage is not required to be established on the bone, the time of a reconstruction operation is greatly shortened, and in addition, the implant structure can be fixed on the bone through the fixing structure, so that the operation is simple and the fastening degree is enhanced.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to an implant structure for reconstruction of an anterior cruciate ligament.
Background
Anterior cruciate ligaments (anterior cruciateligament, ACL) are important structures that stabilize the knee joint, with the most vulnerable to damage in the ligaments of the knee. Instability of the knee joint after ACL fracture can affect not only daily activities and movements, but also cause further damage to intra-articular structures. Therefore, it has become common knowledge that the need to reconstruct damaged ACLs in order to restore knee joint structure and function has been established. In the ACL reconstruction operation, the method of reconstructing ACL can be classified into autologous tissue reconstruction ACL, allogeneic tissue reconstruction ACL, and artificial ligament reconstruction ACL according to the reconstruction material division.
Wherein, the artificial ligament rebuilding ACL is relative to the allogeneic tissue rebuilding ACL, the rehabilitation period is shortened, and the artificial ligament rebuilding ACL does not need more one-time knives like the autologous tissue rebuilding ACL. However, there are also disadvantages in reconstructing ACL by artificial ligament, the operation time is long, the service life is questionable, and the operation is very troublesome if the artificial ligament needs to be replaced.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art, and provides an implant structure for reconstructing an anterior cruciate ligament, which is directly embedded into a bone through two implantation ends, so that a bone marrow passage is not required to be established on the bone, the reconstruction operation time is greatly shortened, and the implant structure can be firmly fixed on the bone through a fixing structure.
In order to achieve the above object, the present invention provides an implant structure for reconstruction of anterior cruciate ligament, comprising:
the connecting part comprises two bundles of artificial ligaments, and the ends of the two bundles of artificial ligaments are respectively connected;
the implant part comprises implant ends respectively arranged at two ends of the connecting part, the implant ends are hollow cavities, a first communication hole is formed in one end of each implant end, two second communication holes are formed in the other end of each implant end, the first communication holes are communicated with the second communication holes through communication pipes, two bundles of artificial ligaments penetrate through the middle parts of the second communication holes respectively, a fixing structure is arranged on each implant end, and the fixing structure can connect the implant part with bones.
Optionally, the material of the implantation end is tantalum metal.
Optionally, the fixed knot constructs including a plurality of joint portions, joint portion is followed implant the periphery of end evenly sets up, the one end of joint portion with implant the end and be connected, the other end of joint portion to the direction of artificial ligament extends, the other end of joint portion with implant the axial direction of end forms and is less than 45 contained angles.
Optionally, one end of the clamping portion is provided with an extension portion towards the inside of the communicating pipe, the extension portion is attached to the inner side of the communicating pipe, and the inner bore diameter of the communicating pipe is larger than the sum of the cross sections of the artificial ligament and the extension portion.
Optionally, the device further comprises a withdrawing tool, wherein an acting end of the withdrawing tool can be inserted into the communicating pipe, and the acting end of the withdrawing tool is matched with an inner hole of the communicating pipe.
Optionally, the second communication hole is disposed along a radial direction of a cross section of the implant head.
Optionally, the cross-section of the implant head is circular, and the cross-section of the implant head tapers from one end of the implant head to the other end of the implant head.
Optionally, the outer portion of the implantation tip is provided with graduations.
Optionally, a flange is provided on the outer periphery of the other end of the implantation end.
Optionally, the axial length of the implant head is no greater than 15mm.
The invention provides an implant structure for reconstruction of anterior cruciate ligament, which has the beneficial effects that: the implant structure is characterized in that the implant end is nailed into the bone, a bone marrow tract does not need to be manufactured in advance, and the implant end and the bone can be mutually clamped through the clamping part, so that the firmness of the implant end is improved; in addition, when the implant structure needs to be replaced, the taking-out tool can be inserted into the communicating pipe, so that the clamping part and the bone can be separated from each other, the implantation end is taken out more easily, and secondary damage to the bone can be avoided.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular descriptions of exemplary embodiments of the invention as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the invention.
Fig. 1 shows a schematic structural view of an implant structure for anterior cruciate ligament reconstruction according to an embodiment of the present invention.
Fig. 2 shows a schematic structural view of one end of an implant head according to one embodiment of the present invention.
Fig. 3 shows a schematic view of the structure of the other end of the implant head according to one embodiment of the present invention.
Fig. 4 shows a schematic structural view of an artificial ligament in accordance with an embodiment of the invention in an implantation tip.
Fig. 5 shows a schematic view of the insertion of the active end of the extraction tool into the implant head according to one embodiment of the invention.
Fig. 6 illustrates a schematic view of the removal of the clamping portion from the implant head, in accordance with one embodiment of the present invention.
Reference numerals illustrate:
1. an artificial ligament; 2. implanting an end head; 3. a first communication hole; 4. a second communication hole; 5. a communicating pipe; 6. a clamping part; 7. an extension; 8. the active end of the tool is withdrawn.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the preferred embodiments of the present invention are described below, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The invention provides an implant structure for reconstruction of anterior cruciate ligament, comprising:
the connecting part comprises two bundles of artificial ligaments, and the end parts of the two bundles of artificial ligaments are respectively connected;
the implantation part comprises implantation ends which are respectively arranged at two ends of the connecting part, the implantation ends are hollow cavities, a first communication hole is formed in one end of each implantation end, two second communication holes are formed in the other end of each implantation end, the first communication holes are communicated with the second communication holes through the communication pipes, the middle parts of two bundles of artificial ligaments penetrate through the second communication holes respectively, a fixing structure is arranged on each implantation end, and the fixing structure can be used for connecting the implantation part with bones.
Specifically, the existing artificial ligament is to firstly make a bone marrow canal on a bone, then screw the artificial ligament on the bone, so that the operation time is long, and in the operation action, the connection of the artificial ligament and the bone can generate torsion friction, which may cause discomfort of joints; the implant structure is injected into the bone through the implant end without constructing a bone marrow canal, and the connection firmness of the implant end and the bone is improved through the fixing structure; in addition, the artificial ligament firstly cuts out the required length, and then the ends of the two bundles of artificial ligaments are respectively connected by stitching through the second communication hole and the first communication hole in sequence, so that the implant structure is more suitable for the physical condition of each person.
Optionally, the material of the implantation end is tantalum metal.
Specifically, the implantation end is made of alloy of tantalum and titanium, and the alloy is nontoxic, light in weight and corrosion-resistant, and the tantalum metal has good toughness and no reaction with body fluid, so that the alloy can be used as a good artificial orthopaedics material.
Optionally, the fixed knot constructs including a plurality of joint portions, and joint portion evenly sets up along the periphery of implanting the end, and the one end of joint portion is connected with implanting the end, and the other end of joint portion extends to the direction of artificial ligament, and the other end of joint portion forms the contained angle that is less than 45 with the axial direction of implanting the end.
Specifically, set up a plurality of joint portions in implantation end periphery, in implantation end pours into the bone into, because joint portion takes place the joint with the bone, lead to implanting the end and can't separate from the bone to every joint portion is the point contact with the bone, implants the end like this and just can not take place rotation and displacement on the bone, also can not appear implanting the loose phenomenon of connection between end and the bone, thereby avoid the artificial ligament to take place the dislocation, cause postoperative patient's uncomfortable with move inconvenient.
Optionally, one end of the clamping part is provided with an extension part towards the inside of the communicating pipe, the extension part is attached to the inner side of the communicating pipe, and the inner aperture of the communicating pipe is larger than the sum of the cross sections of the artificial ligament and the extension part.
Optionally, the device further comprises a take-out tool, wherein the action end of the take-out tool can be inserted into the communicating pipe, and the action end of the take-out tool is matched with the inner hole of the communicating pipe.
Specifically, the clamping part can penetrate through the side wall of the communicating pipe and is integrally connected with the extension part in the communicating pipe, when the implantation end is positioned in a bone, the clamping part is separated from the implantation end and interferes with the bone when the implantation end is forced to the external direction of the bone, so that the implantation end cannot be separated from the bone, the extension part is attached to the pipe wall of the communicating pipe, the angle between the clamping part and the implantation end can be limited to be continuously increased, and when the extension part is positioned in the through hole, the artificial ligament can move freely in the implantation end, and normal movement of a patient after operation is ensured; when the implant structure is in a problem and needs to be replaced, the artificial ligament is firstly taken out from the communicating hole, then the taking-out tool is inserted into the communicating pipe, and the extension part moves towards the direction of the first communicating hole, so that the clamping relation between the clamping part and the bone is eliminated, and the implant end can be smoothly taken out from the bone.
Optionally, the second communication hole is disposed along a radial direction of a cross section of the implant head.
Optionally, the cross-section of the implant head is circular, the cross-section of the implant head tapering from one end of the implant head to the other end of the implant head.
Specifically, two terminal surfaces of implantation end are circular, and the damage dynamics is less when implanting the end and inserting in the bone like this to the second intercommunicating pore sets up on the terminal surface symmetry, can make two bundles of artificial ligaments can control the position of installation when implanting.
Optionally, the exterior of the implant head is provided with graduations.
Specifically, in the process of inserting the implantation end into the bone, the depth of the bone can be accurately mastered through the observation of scales, and the outflow length of the artificial ligament can be controlled, so that the body shape of a patient and the length of the ligament can reach the optimal matching degree, and the artificial ligament after operation can play the best action function.
Optionally, a flange is provided on the outer periphery of the other end of the implant head.
Specifically, in order to avoid excessive installation when inserting the implant head, the implant head cannot be removed from the bone, and a flange is provided to limit the amount of insertion of the implant head.
Optionally, the axial length of the implant head is no greater than 15mm.
Examples
As shown in fig. 1 to 6, the present invention provides an implant structure for reconstruction of an anterior cruciate ligament, comprising:
the connecting part comprises two bundles of artificial ligaments 1, and the ends of the two bundles of artificial ligaments 1 are respectively connected;
the implantation part comprises implantation ends 2 which are respectively arranged at two ends of the connecting part, the implantation ends 2 are hollow cavities, one end of each implantation end 2 is provided with a first communication hole 3, the other end of each implantation end 2 is provided with two second communication holes 4, the first communication holes 3 are communicated with the second communication holes 4 through communication pipes 5, the middle parts of two bundles of artificial ligaments 1 respectively penetrate through the second communication holes 4, a fixing structure is arranged on the implantation ends 2, and the fixing structure can connect the implantation part with bones.
In this embodiment, the material of the implantation tip 2 is tantalum metal.
In this embodiment, the fixing structure includes a plurality of clamping portions 6, the clamping portions 6 are uniformly arranged along the periphery of the implantation end 2, one end of each clamping portion 6 is connected with the implantation end 2, the other end of each clamping portion 6 extends towards the direction of the artificial ligament 1, and an included angle smaller than 45 degrees is formed between the other end of each clamping portion 6 and the axial direction of the implantation end 2.
In this embodiment, an extension portion 7 is provided at one end of the engaging portion 6 toward the inside of the communicating tube 5, the extension portion 7 is bonded to the inside of the communicating tube 5, and the inner diameter of the communicating tube 5 is larger than the sum of the cross sections of the artificial ligament 1 and the extension portion 7.
In this embodiment, the device further comprises a withdrawing tool, wherein the acting end 8 of the withdrawing tool can be inserted into the communicating pipe 5, and the acting end 8 of the withdrawing tool is matched with the inner hole of the communicating pipe 5.
In the present embodiment, the second communication hole 4 is provided along a radial direction of the cross section of the implant head 2.
In this embodiment, the cross-section of the implant head 2 is circular, and the cross-section of the implant head 2 tapers from one end of the implant head to the other end of the implant head.
In this embodiment, the exterior of the implant head 2 is provided with graduations.
In this embodiment, the outer periphery of the other end of the implant head 2 is provided with a flange.
In this embodiment, the axial length of the implant head 2 is no greater than 15mm.
In summary, in the artificial ligament reconstruction operation, the artificial ligament 1 is respectively penetrated into two implantation ends 2, two bundles of artificial ligaments 1 are sutured, then the implantation ends 2 are knocked into bones, after the installation position is suitable, the implantation ends are pulled out a small distance away from the bones, thus the clamping part 6 is clamped with the bones, and the implantation ends are installed in place with the bones; when the artificial ligament needs to be repaired or the implanted end needs to be replaced after operation, the implanted end 2 needs to be taken out of the bone, the artificial ligament 1 is firstly taken out of the implanted end 2, then the acting end 8 of the taking-out tool is inserted into the second communication hole, and the extending part 7 is moved by the taking-out tool, so that the clamping part 6 is separated from the bone and does not interfere any more, and the implanted end 2 can be taken out of the bone.
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described.
Claims (10)
1. An anterior cruciate ligament reconstruction implant structure, comprising:
the connecting part comprises two bundles of artificial ligaments, and the ends of the two bundles of artificial ligaments are respectively connected;
the implant part comprises implant ends respectively arranged at two ends of the connecting part, the implant ends are hollow cavities, a first communication hole is formed in one end of each implant end, two second communication holes are formed in the other end of each implant end, the first communication holes are communicated with the second communication holes through communication pipes, two bundles of artificial ligaments penetrate through the middle parts of the second communication holes respectively, a fixing structure is arranged on each implant end, and the fixing structure can connect the implant part with bones.
2. The anterior cruciate ligament reconstruction implant structure of claim 1, wherein the implant tip is made of tantalum metal.
3. The implant structure for anterior cruciate ligament reconstruction according to claim 1, wherein the fixing structure includes a plurality of clamping portions, the clamping portions are uniformly arranged along the periphery of the implant head, one end of each clamping portion is connected with the implant head, the other end of each clamping portion extends toward the artificial ligament, and an included angle smaller than 45 ° is formed between the other end of each clamping portion and the axial direction of the implant head.
4. The implant structure for anterior cruciate ligament reconstruction according to claim 3, wherein one end of the engagement portion is provided with an extension portion toward the inside of the communication tube, the extension portion is attached to the inside of the communication tube, and an inner diameter of the communication tube is larger than a sum of cross sections of the artificial ligament and the extension portion.
5. The anterior cruciate ligament reconstruction implant construct of claim 4, further comprising a removal tool, an active end of the removal tool being insertable into the communication tube, the active end of the removal tool being mated with an internal bore of the communication tube.
6. The anterior cruciate ligament reconstruction implant structure according to claim 1, wherein the second communication hole is provided along a radial direction of a cross section of the implant head.
7. The anterior cruciate ligament reconstruction implant structure of claim 1, wherein the cross section of the implant head is circular, the cross section of the implant head tapering from one end of the implant head to the other end of the implant head.
8. The anterior cruciate ligament reconstruction implant structure of claim 1, wherein the exterior of the implant head is provided with graduations.
9. The anterior cruciate ligament reconstruction implant structure according to claim 8, wherein a flange is provided at an outer periphery of the other end of the implant head.
10. The anterior cruciate ligament reconstruction implant construct of claim 1, wherein the axial length of the implant tip is no greater than 15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310301439.7A CN116019604B (en) | 2023-03-27 | 2023-03-27 | Implant structure for reconstruction of anterior cruciate ligament |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310301439.7A CN116019604B (en) | 2023-03-27 | 2023-03-27 | Implant structure for reconstruction of anterior cruciate ligament |
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| CN116019604A true CN116019604A (en) | 2023-04-28 |
| CN116019604B CN116019604B (en) | 2023-06-23 |
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|---|---|
| CN116019604B (en) | 2023-06-23 |
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