CN216777243U - Expander is strengthened to anterior cruciate ligament stub - Google Patents
Expander is strengthened to anterior cruciate ligament stub Download PDFInfo
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- CN216777243U CN216777243U CN202121539580.3U CN202121539580U CN216777243U CN 216777243 U CN216777243 U CN 216777243U CN 202121539580 U CN202121539580 U CN 202121539580U CN 216777243 U CN216777243 U CN 216777243U
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Abstract
The utility model discloses an anterior cruciate ligament stub reinforcing dilator which comprises a guide pin, a dilating head, a push rod and a handle, wherein the guide pin is arranged on the front end of the front cruciate ligament stub reinforcing dilator; one end of the guide pin is a guide pin head, a push rod is sleeved on the guide pin, one end of the push rod close to the guide pin head is connected with an expansion head which is also sleeved outside the guide pin, and the other end of the push rod is connected with a handle which is in sliding connection with the guide pin; the anterior cruciate ligament stump reinforcing dilator is simple in structure and convenient to operate, is applied to cruciate ligament residue-preserving reconstruction surgery, can simply and efficiently realize maximum graft wrapping of residual ACL ligaments, and avoids intercondylar notch collision, so that postoperative complications are reduced, and prognosis of a patient is improved.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to an anterior cruciate ligament stub reinforcing dilator.
Background
Anterior Cruciate Ligament (ACL) injury is a common motor injury. Knee joint instability due to ACL injury affects not only the patient's daily life and movement, but further affects other structures within the joint. Therefore, a consensus has been reached that the reconstruction of a damaged ACL is performed in order to restore the stability of the knee joint. In conventional ACL reconstruction surgery, the ACL stumps are usually cleaned in order to clearly expose the footprint of the ACL femoral and tibial insertion points during the surgery. In recent years, researchers at home and abroad focus on the reconstruction of the ACL ligament not only on the aspect of restoring the biomechanical function after reconstruction, but also on the influence of the biological healing of the ACL and the restoration of proprioception on the motor function of the knee joint. The current research shows that mechanoreceptors for controlling the proprioception of the knee joint exist around the ACL ligament, most of the mechanoreceptors are positioned in the synovial membrane structure near the tibial insertion point, have the functions of sensing the position sense and the balance sense of the joint, participate in nerve reflex, and maintain the stability of the knee joint by stimulating the coordinated contraction of muscles, so that the stump of the ACL ligament is reserved, and the mechanoreceptors are favorable for being stretched into a graft to obtain the innervation again and restore the proprioceptive function. The blood supply of ACL is mainly from the branch of the knee middle artery, and the distal part of the ACL depends on the infrapatellar artery which passes through the infrapatellar fat pad, finally, a synovial tissue vascular plexus is formed to surround ligament tissue, so that the preservation of the soft tissue vascular plexus around the ACL ligament stump can provide an important blood supply source for the transplanted muscle, and then the revascularization process of the transplanted body is promoted. The current research shows that the expansion and dissolution phenomenon of the inner opening of the bone tunnel can occur after the ACL reconstruction, joint synovial fluid has negative influence on the healing of tendon and bone of the reconstructed ligament, the graft is finally loosened, the residual ACL ligament end is reserved, the inner opening of the tunnel can be blocked, the joint fluid is prevented from entering the bone tunnel, and the residual end which is long enough can establish new connection of femur and tibia, so that the integral tensile breaking strength of the graft is increased, and the residual ACL ligament end is reserved, and the re-loosening of the graft is favorably prevented. At present, the ligament stump remaining in the ACL rupture patient operation is gradually accepted by clinicians, the ideal ligament-retention reconstruction is certainly that the ligament residue completely surrounds the graft, and does not cause impact on intercondylar fossa and cyclopia to cause extension limitation, but clinically, the ligament residue often causes unclear vision due to the existence of the ligament residue, causes inaccurate positioning, is difficult to achieve the condition that the ligament residue surrounds the graft, and even may cause anterior impact due to excessive anterior movement of the ligament residue.
How to provide a technique or a device which can simply and efficiently realize the maximum wrapping of the graft of the residual ACL ligament and avoid intercondylar notch impingement, thereby reducing postoperative complications and improving the prognosis of a patient is a technical problem to be solved by a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an anterior cruciate ligament stub reinforcing dilator, which solves the problems in the prior art and can simply and efficiently realize the maximum wrapping of a graft of a residual ACL ligament.
In order to achieve the purpose, the utility model provides the following scheme:
the utility model provides an anterior cruciate ligament stub reinforcing dilator which comprises a guide pin, a dilating head, a push rod and a handle, wherein the guide pin is arranged on the front cruciate ligament stub; the one end of guide pin is the guide pin head, the cover is equipped with the push rod on the guide pin, the push rod is close to the one end of guide needle head is connected the same cover and is established the outside expansion head of guide pin, the other end of push rod then be connected with guide pin sliding connection's handle.
Preferably, the tip of the needle guide head is in a conical tip structure.
Preferably, the dilating head is a semi-elliptical cover structure with a gradually increasing diameter towards the introducer needle.
Preferably, the push rod is of a hollow pipe structure.
Preferably, the handle is a cuboid structure with a sliding hole in the center.
Preferably, the expansion head, the push rod and the handle are of a unitary construction.
Compared with the prior art, the utility model has the following beneficial technical effects:
the utility model provides an anterior cruciate ligament stump reinforcing dilator which comprises a guide pin, a dilating head, a push rod and a handle, wherein the dilating head is dilated by pushing the push rod on the guide pin, the size of the dilating head is gradually adjusted from small to large in the process of pushing the push rod so as to dilate an ACL stump until the ACL stump is dilated to the same diameter as a graft, then other operations of ACL reconstruction are completed, and finally the graft penetrates through the dilated ACL to further realize the maximum wrapping of the residual ACL ligament; the device has a simple structure, is convenient to operate, is applied to the cruciate ligament residue-preserving reconstruction operation, can simply and efficiently realize the maximum wrapping graft of the residual ACL ligament, and avoids the impact of the intercondylar notch, thereby reducing the postoperative complications and improving the prognosis of patients.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of the anterior cruciate ligament stump reinforcing dilator of the present invention;
in the figure: 1-guide needle head, 2-expansion head, 3-guide needle, 4-push rod and 5-handle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model aims to provide an anterior cruciate ligament stump reinforcing dilator to solve the problems in the prior art.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The anterior cruciate ligament stub reinforcing dilator in the embodiment, as shown in fig. 1, comprises a guide pin 3, a dilating head 2, a push rod 4 and a handle 5; one end of the guide pin 3 is a guide pin head 1, a push rod 4 is sleeved on the guide pin 3, one end of the push rod 4 close to the guide pin head 1 is connected with an expansion head 2 which is sleeved outside the guide pin 3, and the other end of the push rod 4 is connected with a handle 5 which is connected with the guide pin 3 in a sliding manner.
In this embodiment, the tip of the needle guiding head 1 is a cone-tip structure; the expansion head 2 is a semi-elliptical cover body structure with the diameter gradually increasing towards the guide needle head 1; the push rod 4 is a hollow pipe body structure; the handle 5 is a cuboid structure with a sliding hole at the center. The expansion head 2, the push rod 4 and the handle 5 are of an integral structure.
The specific operation method of applying the anterior cruciate ligament stump reinforcing dilator to the cruciate ligament residue-protecting reconstruction operation is as follows:
the center of an ACL tibial insertion point is positioned under the assistance of an anterior cruciate ligament positioner, then a tunnel diameter corresponding to the diameter of a graft is drilled, an anterior cruciate ligament stump dilator is used for dilating the ACL stump, a guide needle 3 is inserted according to an original dilation path until the other end of the stump is exposed out of a guide needle head 1, the anterior cruciate ligament stump with the same size is selected to strengthen the dilator, a handle 5 is held by a hand, the dilating head 2 is gradually pushed into the stump along with the pushing of a push rod 4 until the other end of the stump is reached, the other end of the stump is dilated to the diameter same as the diameter of the graft, then other operations of ACL reconstruction are completed, and finally the graft passes through the dilated ACL and is fixed.
The principle and the implementation mode of the utility model are explained by applying specific examples, and the description of the above examples is only used for helping understanding the method and the core idea of the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.
Claims (5)
1. An anterior cruciate ligament stub reinforcing dilator, which is characterized in that: comprises a guide pin, an expansion head, a push rod and a handle; one end of the guide pin is a guide pin head, a push rod is sleeved on the guide pin, one end of the push rod, which is close to the guide pin head, is connected with an expansion head which is also sleeved outside the guide pin, and the other end of the push rod is connected with a handle which is in sliding connection with the guide pin; the expansion head is a semi-elliptical cover body structure with the diameter gradually increasing towards the guide needle head.
2. The anterior cruciate ligament stub reinforcing dilator according to claim 1, wherein: the tip of the guide needle head is of a conical tip structure.
3. The anterior cruciate ligament stub reinforcing dilator according to claim 1, wherein: the push rod is of a hollow pipe body structure.
4. The anterior cruciate ligament stub reinforcing dilator according to claim 1, wherein: the handle is of a cuboid structure with a sliding hole in the center.
5. The anterior cruciate ligament stub reinforcing dilator according to claim 1, wherein: the expansion head, the push rod and the handle are of an integrated structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121539580.3U CN216777243U (en) | 2021-07-07 | 2021-07-07 | Expander is strengthened to anterior cruciate ligament stub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121539580.3U CN216777243U (en) | 2021-07-07 | 2021-07-07 | Expander is strengthened to anterior cruciate ligament stub |
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| Publication Number | Publication Date |
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| CN216777243U true CN216777243U (en) | 2022-06-21 |
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| CN202121539580.3U Active CN216777243U (en) | 2021-07-07 | 2021-07-07 | Expander is strengthened to anterior cruciate ligament stub |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113303926A (en) * | 2021-07-07 | 2021-08-27 | 浙江大学 | Dilator is strengthened to anterior cruciate ligament stub |
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2021
- 2021-07-07 CN CN202121539580.3U patent/CN216777243U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113303926A (en) * | 2021-07-07 | 2021-08-27 | 浙江大学 | Dilator is strengthened to anterior cruciate ligament stub |
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