CN216495569U - Dissection locking device for posterior cruciate ligament insertion avulsion fracture - Google Patents
Dissection locking device for posterior cruciate ligament insertion avulsion fracture Download PDFInfo
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- CN216495569U CN216495569U CN202122188924.7U CN202122188924U CN216495569U CN 216495569 U CN216495569 U CN 216495569U CN 202122188924 U CN202122188924 U CN 202122188924U CN 216495569 U CN216495569 U CN 216495569U
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- posterior cruciate
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Abstract
The utility model relates to an anatomical locking device aiming at posterior cruciate ligament insertion avulsion fracture, which comprises a transverse leaf and a longitudinal leaf, wherein one end of the longitudinal leaf is connected with the edge of the middle part of the transverse leaf to form a T-shaped structural plate, a certain included angle is formed between the lower end face of the longitudinal leaf and the lower end face of the transverse leaf, the normal physiological anatomical angle of a tibial plateau at the insertion point of the posterior cruciate ligament insertion is proper after the included angle is formed, two ends and the middle part of the transverse leaf are respectively provided with a multi-axis locking screw hole, and Kirschner wire holes are respectively arranged on the transverse leaf and between every two multi-axis locking screw holes. The device has small volume, anatomical form and convenient operation, and is suitable for being popularized and applied to various types of posterior cruciate ligament tibial insertion avulsion fracture treatment as an auxiliary tool.
Description
Technical Field
The utility model relates to the technical field of medical auxiliary instruments, in particular to an anatomical locking device for posterior cruciate ligament insertion avulsion fracture.
Background
Posterior cruciate ligament insertion avulsion fracture is a common fracture type in clinic, and the posterior cruciate ligament is very important for maintaining the posterior stability of the knee joint. At present, after clinical treatment, cruciate ligament insertion avulsion fracture mostly adopts fixing modes such as Kirschner wire, ground anchor, steel wire bundling and cancellous bone lag screw, and the traditional fixing modes have the defects and cannot meet clinical requirements. For example, the use of an anchor for fixation easily affects the alignment and healing of fracture due to poor anchoring position; when ligament insertion points are torn, the insertion points are difficult to reconstruct by the kirschner wire, the steel wire and the screw; when the torn fracture block is large, the anchoring nail, the Kirschner wire and the steel wire are not bound enough to provide enough holding force, the fracture block is easy to displace, and the screw is not firmly fixed and is easy to pull out after the operation, so that the bone block is displaced; when the torn fracture pieces are small, the steel wire is easy to cut the fracture pieces during fixation, the fixation fastness is not enough, the kirschner wire is difficult to realize effective fixation and pressurization, and the tension screw is easy to cause fracture piece splitting; when there are posterior cruciate ligament insertion tears and fracture pieces at the same time, more than 2 kinds of fixtures are often needed to be used at the same time, increasing the operation and difficulty of the operation. At present, the bone fracture is fixed by adopting a miniature steel plate clinically, but the number of special steel plates for tearing and breaking the insertion points of the posterior cruciate ligament is small, the problems that the steel plates are not proper, the shape of the steel plates is not proper, the direction of a single-axis directional locking screw is single, a proper kirschner wire hole is not used for temporary fixation, binding of an anchor and a suture and the like exist, the steel plates are not used for correcting the bone fracture manually frequently, and the like are solved.
Aiming at the problems, the utility model provides an anatomical locking device aiming at the avulsion fracture of the posterior cruciate ligament insertion point. The device has small volume, anatomical form and convenient operation, and is suitable for being popularized and applied to various types of posterior cruciate ligament tibial insertion avulsion fracture treatment as an auxiliary tool.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the problems in the prior art and provides an anatomical locking device for posterior cruciate ligament insertion avulsion fracture.
In order to achieve the technical purpose and achieve the technical effect, the utility model is realized by the following technical scheme:
the utility model provides an anatomy locking device to fracture is torn to back cruciate ligament insertion, the device includes horizontal leaf and indulges the leaf, the one end of indulging the leaf is connected in the middle part edge formation T shape structural slab of horizontal leaf, and it is certain contained angle to indulge between the lower terminal surface of leaf and horizontal leaf, and the normal physiology of crossing ligament ending point department tibial plateau is dissected the angle and is suitable after this contained angle size, the both ends and the middle part of horizontal leaf are equipped with a multiaxis locking screw hole respectively on the horizontal leaf and lie in and be equipped with ke shi pinhole between two liang of multiaxis locking screw holes respectively.
Furthermore, the middle part of the longitudinal blade is provided with a multi-axis locking screw hole, and one end of the longitudinal blade, which is far away from the transverse blade, is provided with a Kirschner wire hole.
Furthermore, the number of the multi-axis locking screw holes arranged on the longitudinal blade is 1-2.
Furthermore, the connecting part of the longitudinal blade and the transverse blade is in an arc shape.
Furthermore, the included angle between the lower end surfaces of the longitudinal blades and the transverse blades is 70-80 degrees.
The utility model has the beneficial effects that:
(1) the device of the utility model enables the plate-bone interface to be firmly attached according to the anatomical design of the posterior edge of the tibial plateau.
(2) The two Kirschner wire holes in the transverse leaf can be used for penetrating Kirschner wires to play a role in temporarily fixing bone blocks, and can also be used for penetrating a thread anchoring and sewing thread to tie up fixed cruciate ligaments and bone blocks, so that the steel plate, the ligaments and the bone blocks are combined into a whole, and the fixation is firmer.
(3) The T-shaped structural plate accords with the characteristic of the avulsion fracture of the tibial insertion point of the posterior cruciate ligament, and can firmly cover all or most of the avulsion bone block under the steel plate.
(4) For the type with larger torn fracture blocks, a multi-axis locking screw can be placed in the middle of the transverse blade through the multi-axis locking screw hole, and the multi-axis locking screw holes at the two ends of the transverse blade and the corresponding multi-axis locking screws are matched to realize strong fixation; for the type with smaller torn fracture pieces, a suture anchor can be placed below the bone pieces, and a suture is tied on the device through two Kirschner wire holes of the bone pieces and the transverse leaves, so that effective fixation is realized; according to the device that the longitudinal blade comprises one or two multi-axis locking screw holes, the longitudinal blade is selected according to the position of the fracture line, so that the situation that the screw is placed into the fracture line due to the fact that the longitudinal blade is too short is avoided, the situation that the exposure range is too large due to the fact that the longitudinal blade is too long is avoided, and operation trauma is increased.
(5) The adopted multi-axis locking screw can randomly adjust the screw placing direction according to the size of the fracture block and the sagittal position of the fracture line crown, so that the individualized and accurate minimally invasive fixation of the fracture block is realized.
Drawings
FIG. 1 is a schematic view of the elastically expanded planar structure of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic perspective view of the present invention;
FIG. 4 is a side elevational view of the present invention in use;
fig. 5 is an offset view of the present invention in use.
The reference numbers in the figures illustrate: 1. transverse leaves; 2. longitudinal leaf; 3. a distal femur; 4. posterior cruciate ligament; 5. a tibial plateau; 6. tearing off the fracture block; 7. a multi-axis locking screw; 8. the anterior cruciate ligament; a. a multi-axial locking screw hole; b. and (4) a kirschner wire hole.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in figures 1 to 3, the anatomical locking device for avulsion fracture of posterior cruciate ligament insertion point comprises a transverse leaf 1 and a longitudinal leaf 2, wherein one end of the longitudinal leaf 2 is connected with the middle edge of the transverse leaf 1 to form a T-shaped structural plate, a certain included angle is formed between the lower end face of the longitudinal leaf 2 and the lower end face of the transverse leaf 1, the normal physiological anatomical angle of a tibial platform at the insertion point of the posterior cruciate ligament insertion point is suitable for the included angle, two ends and the middle of the transverse leaf 1 are respectively provided with a multi-axis locking screw hole a, Kirschner wire holes b are respectively arranged on the transverse leaf 1 and between every two multi-axis locking screw holes a, in the embodiment, the three multi-axis locking screw holes a on the transverse leaf 1 are round holes, the diameter is 2.0-2.7mm, and the screw setting direction of the multi-axis locking screw holes a on the transverse leaf 1 can be adjusted according to the size of a fracture block and the position of a sagittal crown to realize individuation, Precisely fixing the fracture block in a minimally invasive manner; the two Kirschner wire holes b are round holes with the diameter of 1.5mm, the Kirschner wire holes b on the transverse leaf 1 can be penetrated by Kirschner wires to play a role of temporarily fixing bone blocks and can also be penetrated by suture threads of anchor bolts to tie up fixed cruciate ligaments and bone blocks, so that the steel plate, the ligaments and the bone blocks are combined into a whole.
The middle part of the longitudinal blade 2 is provided with a multi-axis locking screw hole a, one end of the longitudinal blade 2, which is far away from the transverse blade 1, is provided with a Kirschner wire hole b, in the embodiment, the multi-axis locking screw hole a on the longitudinal blade 2 is a round hole with the diameter of 2.0-2.7mm, and the multi-axis locking screw hole a on the longitudinal blade 2 can be randomly adjusted in the nail setting direction according to the size of a fracture block and the sagittal position of a fracture line crown, so that individualized and precise minimally invasive fixation of the fracture block is realized; the Kirschner wire holes b are round holes with the diameter of 1.5mm, and the Kirschner wire holes b on the longitudinal blades 2 can be temporarily fixed with a device, so that the steel plate is placed at a proper position.
The number of the multi-axis locking screw holes a arranged on the longitudinal blade 2 is 1-2.
The connecting part of the longitudinal blade 2 and the transverse blade 1 is in an arc shape.
The included angle between the lower end faces of the longitudinal leaf 2 and the transverse leaf 1 is 70-80 degrees, and the anatomical characteristics of the tibial plateau are better met.
Process of use of the utility model
In use, as shown in figures 4 and 5, access is gained through an inverted L-shaped incision in the posterior medial aspect of the knee, exposing the insertion point at the posterior cruciate ligament 4 to tear off the fracture fragment 6; the fracture block is reset by adopting the vascular forceps, for the type with larger fracture block 6, the device can be arranged at the back upper part of the fracture block 6 to compress the fracture block, after the Kirschner wire is temporarily fixed, the screw placing direction of the multi-axis locking screw 7 is set according to the size of the fracture block and the sagittal position of the fracture line crown, the multi-axis locking screw 7 is placed into the multi-axis locking screw hole a in the middle of the transverse blade 1, and the multi-axis locking screw holes a at the two ends of the transverse blade 1 and the corresponding multi-axis locking screws 7 are used for realizing strong fixation; for the type with smaller torn fracture block 6, firstly, a suture anchor is placed below the bone block, the suture is bound on the device through two Kirschner wire holes b on the bone block and the transverse leaf 1, after the Kirschner wires are temporarily fixed, a multi-axis locking screw 7 is placed in a multi-axis locking screw hole a at two ends of the transverse leaf 1, and effective fixation is realized; after the torn fracture block 6 is reset satisfactorily, 1-2 multi-axis locking screws 7 are finally placed on the longitudinal blade 2; and observing the steel plate position and the bone block involution condition by adopting a C-arm machine in a perspective way, flushing the incision after the position of the device is satisfied and the alignment of the bone blocks is good, and closing the incision after sufficient hemostasis.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by 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 (5)
1. The utility model provides an anatomy locking device to fracture is torn off to back cruciate ligament insertion, the device includes horizontal leaf (1) and indulges leaf (2), the one end of indulging leaf (2) is connected in the middle part edge of horizontal leaf (1) and is formed T shape structural slab, and it is the contained angle to indulge between the lower terminal surface of leaf (2) and horizontal leaf (1), and the angle is dissected for the normal physiology of back cruciate ligament insertion department tibial plateau to this contained angle size, its characterized in that, the both ends and the middle part of horizontal leaf (1) are equipped with a multiaxis locking screw hole (a) respectively on horizontal leaf (1) and be located and be equipped with ke shi pinhole (b) between two liang of locking screw holes of multiaxis (a) respectively.
2. The anatomical locking device for a posterior cruciate ligament insertion avulsion fracture according to claim 1, characterized in that the middle of the longitudinal leaf (2) is provided with a polyaxial locking screw hole (a), and the end of the longitudinal leaf (2) far away from the transverse leaf (1) is provided with a kirschner wire hole (b).
3. The anatomical locking device for a posterior cruciate ligament insertion avulsion fracture according to claim 2, characterized in that the number of the polyaxial locking screw holes (a) provided on the longitudinal lobe (2) is 1-2.
4. The anatomical locking device for a posterior cruciate ligament insertion avulsion fracture according to claim 3, characterized in that the junction of the longitudinal leaf (2) and the transverse leaf (1) is arranged in a rounded arc.
5. The anatomical locking device for a posterior cruciate ligament insertion avulsion fracture according to claim 4, characterized in that the angle between the lower end face of the longitudinal leaf (2) and the transverse leaf (1) is 70-80 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122188924.7U CN216495569U (en) | 2021-09-10 | 2021-09-10 | Dissection locking device for posterior cruciate ligament insertion avulsion fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122188924.7U CN216495569U (en) | 2021-09-10 | 2021-09-10 | Dissection locking device for posterior cruciate ligament insertion avulsion fracture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216495569U true CN216495569U (en) | 2022-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122188924.7U Active CN216495569U (en) | 2021-09-10 | 2021-09-10 | Dissection locking device for posterior cruciate ligament insertion avulsion fracture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216495569U (en) |
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2021
- 2021-09-10 CN CN202122188924.7U patent/CN216495569U/en active Active
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