CN212261448U - Customized acetabulum guide plate - Google Patents
Customized acetabulum guide plate Download PDFInfo
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- CN212261448U CN212261448U CN202020235313.6U CN202020235313U CN212261448U CN 212261448 U CN212261448 U CN 212261448U CN 202020235313 U CN202020235313 U CN 202020235313U CN 212261448 U CN212261448 U CN 212261448U
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Abstract
The utility model discloses a customization acetabular bone baffle belongs to the medical instrument field, and its technical scheme main points are including connecting rod, fixed connection guide structure, fixed connection locating plate on the connecting rod and set firmly the fixed knot on the locating plate and construct the stand, and the fixed knot constructs the stand and is used for being connected locating plate and patient's sclerotin stability, and guide structure and locating plate set up and crisscross setting on connecting rod length direction along connecting rod length direction. The utility model discloses the effect that can control the acetabulum and frustrate angle and degree of depth has been reached.
Description
Technical Field
The utility model relates to the field of medical equipment, more specifically the utility model relates to a customization acetabular bone baffle that says so.
Background
The hip joint is a multiaxial spherical socket joint, consists of two parts, namely a femoral head of a femur and an acetabulum of a hip bone, is an important joint for connecting a trunk and a lower limb, and is also a joint with the highest load and the highest stress of the whole body. Since the hip is the center of a series of body movements, various disorders are prone to occur. For example: femoral neck fracture, femoral head necrosis, osteoarthritis coxitis, rheumatoid arthritis, ankylosing spondylitis, etc. In order to solve the problem of hip joint damage, a hip joint replacement method is generally adopted clinically, the femoral head is cut off, the artificial femoral head is replaced, the hyperplastic osteophyte is removed from the acetabulum side, an artificial acetabular cup is installed, a new hip joint is formed by the artificial femoral head and the acetabular cup, and the hip joint replacement operation can solve most of hip joint diseases and can achieve better clinical curative effect.
In the existing hip joint replacement operation, the adjustment problem of the acetabular cup angle is basically that a doctor uses two fixed pointers on a cup holder in a standard hip joint surgical instrument to position the angle according to the ground plane, the depth of the acetabular cup needs to be determined by the doctor through repeated use of acetabular cup contusion, and multiple tests determine the final contusion depth. The defects of the mode are that:
1. the angle and the depth of the acetabulum setback are guided by referring to the ground level, the acetabulum setback is greatly influenced by human factors, and a master and a slave need to judge whether the angle is in place by experience and naked eyes;
2. because the angle specified by the cup holder is based on the ground plane, after the angle of a patient on a sickbed and the like are changed, the obtained abduction angle and anteversion angle are different, and the error is larger;
3. the depth of acetabulum contusion is not guided by a reference object, the acetabulum contusion needs to be used for bone contusion for multiple times in the operation, and then a test die is used for testing whether the acetabulum contusion is in place, so that the operation time and the operation difficulty are increased;
4. no reference is provided for guiding the depth of the acetabular cup bruise, the depth of the acetabular cup bruise cannot be measured in advance, the acetabular cup bruise may be deep, and the bone substance removal is excessive.
Therefore, it is imperative to develop instruments that guide the angle of installation of hip joint prostheses.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a customization acetabular bone baffle, its through instructing the angle of setback and the degree of depth of customizing individuation hip joint prosthesis operation in-process, solved the problem that the doctor needs to rely on experience and naked eye to judge angle and degree of depth in the art.
In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a customization acetabular bone baffle, includes connecting rod, fixed connection guide structure on the connecting rod, fixed connection locating plate on the connecting rod and set firmly the fixed knot on the locating plate and construct the stand, and the fixed knot constructs the stand and is used for being connected locating plate and patient's sclerotin stability, and guide structure sets up and interlocks with the locating plate along connecting rod length direction and on connecting rod length direction.
By adopting the technical scheme, after the acetabulum guide plate is placed, due to the existence of the guide structure, the acetabulum support can only directionally move along the direction allowed by the guide structure, peripheral sclerotin cannot be supported, and deeper sclerotin cannot be supported when the guide plate is used; simultaneously because the locating plate is according to patient self bone position and laminates the location, is connected locating plate and patient's bone by the fixed knot structure stand simultaneously, so guide structure's the angle of putting is more accurate, and the removal angle that the acetabulum was contused is more accurate promptly.
Preferably, the following steps: the guide structure comprises a guide spiral plate bent in a straight thread shape.
Through adopting above-mentioned technical scheme, the direction spiral plate that is straight screw thread form and buckles can be frustrated to the acetabulum and connect and exert spacing and direction, has simple structure, light in weight, with low costs, advantage that visual space is big simultaneously.
Preferably, the following steps: the bending angle range of the spiral guide plate is 270-360 degrees.
By adopting the technical scheme, within the range of 270-360 degrees, the spiral guide plate can exert stable guiding and limiting effects on the acetabulum file, and once the range is exceeded, the possibility of unstable limiting effect or material waste on the acetabulum file or even reduction of the visible space in the spiral guide plate can be caused.
Preferably, the following steps: the length range of the spiral guide plate is 2.5-6 times h, and h is the diameter of the acetabulum contusion to be used in the operation.
By adopting the technical scheme, the length range of the spiral guide plate is controlled to be 2.5-6 times of the diameter of the acetabulum to be used in the operation, the spiral guide plate which forms a spiral shape can cover the acetabulum in a larger area, so that the spiral guide plate can exert stable limiting and guiding effects on the acetabulum, and once the spiral guide plate exceeds the range, the possibility that the acetabulum slips due to the fact that the coverage area of the spiral guide plate is too small and the stable limiting effect or the overlong spiral guide plate cannot be exerted is caused.
Preferably, the following steps: the connecting rod comprises a straight rod connected with a positioning plate, an inclined rod fixedly arranged at the other end of the straight rod and a cross rod with one end connected to one end of the straight rod, which is opposite to the inclined rod, and the guide structure is fixedly arranged at the other end of the cross rod.
Through adopting above-mentioned technical scheme, the setting of straight-bar, down tube and horizontal pole can be with guide structure and the crisscross setting of locating plate for the acetabulum that removes under guide structure's direction and spacing is contused and is moved more smoothly, has reduced connecting rod or locating plate and has hindered the acetabulum and has been contused the removal or shelter from the possibility of user's sight.
Preferably, the following steps: the positioning plate and the connecting rod are arranged at an included angle, a concave area matched with the shape of a human bone is formed in the positioning plate, and the thickness range of the positioning plate is 3mm-8 mm.
Through adopting above-mentioned technical scheme, can make the locating plate more stable with the sclerotin laminating that exposes in the art for the locating plate can be reducing to the acetabulum hinder more stable connection under the prerequisite that removes on the sclerotin that exposes in the art, make guide structure can provide more accurate guide effect.
Preferably, the following steps: the fixed structure stand is the contained angle setting with the locating plate, and sets up the mounting hole that is used for wearing to establish the kirschner wire on the fixed structure stand.
Through adopting above-mentioned technical scheme, through passing the sclerotin that exposes in mounting hole and the art with the ke shi needle and be connected, can make the stable connection of locating plate on the sclerotin that exposes in the art for guide structure can provide stable accurate direction.
A use method of a customized acetabulum guide plate is characterized in that: the customized acetabulum guide plate comprises the customized acetabulum guide plate and further comprises the following steps:
the method comprises the following steps: before hip joint replacement, simulating the final mounting position of the prosthesis according to the CT reverse three-dimensional bone model of the patient;
step two: determining the angle and the depth of a final acetabular cup at the final installation position of the prosthesis, and customizing an acetabular guide plate with a proper size;
step three: firstly, the acetabulum connecting rod and the spiral structure part are installed together until the acetabulum connecting rod and the spiral structure part can slide relatively; after the positioning plate is exposed in the operation, the acetabulum guide plate is attached to the bone of a patient and is fixed by using a Kirschner wire; then the acetabulum file with the proper specification is installed to start the grinding.
To sum up, the utility model discloses compare and have following beneficial effect in prior art:
1. the reference surface of the acetabulum guide plate is the bone of the patient, the positioning is accurate, and the obtained angle is the designated angle simulated in the three-dimensional data;
2. after the acetabulum guide plate is placed, the acetabulum file can only be used for filing the depth during design, and deeper sclerotin cannot be filed during the use of the guide plate;
3. the acetabulum guide plate is accurate in angle positioning, a proper angle is obtained according to three-dimensional simulation data, the combination degree with the acetabulum connecting rod is high, and guidance is accurate;
4. the design matched with the acetabulum connecting rod is a universal structure, and the same structure can be used for the subsequent customized individualized acetabulum guide plate.
Drawings
FIG. 1 is an isometric view of a first embodiment;
FIG. 2 is an isometric view of a second embodiment;
fig. 3 is an isometric view of a third embodiment.
Reference numerals: 1. a connecting rod; 11. a straight rod; 12. a diagonal bar; 13. a cross bar; 2. a guide structure; 21. a spiral guide plate; 22. a guide tube; 3. positioning a plate; 31. a recessed region; 32. fixing a structural upright column; 33. and (7) installing holes.
Detailed Description
The first embodiment is as follows: a customized acetabulum guide plate, see figure 1, comprises a connecting rod 1 with one bent end, wherein the connecting rod 1 comprises a straight rod 11, an inclined rod 12 fixedly arranged at one end of the straight rod 11 and a cross rod 13 fixedly arranged at one end of the inclined rod 12, the end surface of the cross rod 13 is perpendicular to the end surface of the straight rod 11, and two ends of the inclined rod 12 are fixedly connected with one end of the straight rod 11 and one end of the cross rod 13 respectively. The end part of the cross rod 13 back to the inclined rod 12 is fixedly connected with a guide structure 2, the guide structure 2 in the embodiment comprises a guide spiral plate bent in a straight thread shape, and a spiral structure formed by bending the guide spiral plate is arranged along the length direction of the straight rod 11. The bending angle of the spiral guide plate 21 in this embodiment is 360 °, the thickness of the spiral guide plate 21 in this embodiment is 3mm, and the length of the spiral guide plate 21 in this embodiment is 6 times the diameter of the acetabulum cup to be used in the operation. The end part of the straight rod 11 back to the inclined rod 12 is fixedly connected with a positioning plate 3 which forms an included angle with the straight rod, and a depressed area 31 matched with the shape of a human bone is arranged on the positioning plate 3. One end fixed connection of locating plate 3 is just on one side of guide structure 2 to straight-bar 11, and one side fixedly connected with fixed knot structure stand 32 of locating plate 3 guide structure 2 dorsad, and fixed knot structure stand 32 is the contained angle setting with locating plate 3, and fixed knot structure stand 32 is inside to be offered the mounting hole 33 that runs through it along its axis direction, and mounting hole 33 is used for the installation with its ke shi needle of being connected with the bone stability.
Second embodiment a customized acetabulum guide plate, referring to fig. 2, the present embodiment is different from the first embodiment in that: the bending angle of the spiral guide plate 21 in this embodiment is 270 °, the thickness of the spiral guide plate 21 in this embodiment is 8mm, and the length of the spiral guide plate 21 in this embodiment is 2.5 times the diameter of the acetabulum cup to be used in the operation.
Example three: a customized acetabular guide plate, referring to fig. 2, the present embodiment is different from the first embodiment in that: in this embodiment, the guiding structure 2 is a guiding tube 22 fixedly disposed at the end of the cross bar 13, and the guiding tube 22 is disposed along the length direction of the straight bar 11.
Example four: a use method of the customized acetabulum guide plate comprises the customized acetabulum guide plate and further comprises the following steps:
the method comprises the following steps: before hip joint replacement, simulating the final mounting position of the prosthesis according to the CT reverse three-dimensional bone model of the patient;
step two: determining the angle and the depth of a final acetabular cup at the final installation position of the prosthesis, and manufacturing an acetabular guide plate with a proper size by adopting a 3D printing technology;
step three: firstly, the acetabulum connecting rod and the spiral structure part are installed together until the acetabulum connecting rod and the spiral structure part can slide relatively; after the positioning plate is exposed in the operation, the acetabulum guide plate is attached to the bone of a patient and is fixed by using a Kirschner wire; then the acetabulum file with the proper specification is installed to start the grinding.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A customized acetabular guide plate, comprising: including connecting rod (1), guide structure (2) of fixed connection on connecting rod (1), locating plate (3) on fixed connection connecting rod (1) and fixed knot structure stand (32) on locating plate (3) set firmly, fixed knot structure stand (32) are used for being connected locating plate (3) and patient's sclerotin stability, and guide structure (2) and locating plate (3) set up and crisscross the setting on connecting rod (1) length direction along connecting rod (1) length direction.
2. The customized acetabular guide of claim 1, wherein: the guide structure (2) comprises a spiral guide plate (21) bent in a straight thread shape.
3. The customized acetabular guide of claim 2, wherein: the bending angle range of the spiral guide plate (21) is 270-360 degrees.
4. The customized acetabular guide of claim 2, wherein: the thickness range of the spiral guide plate (21) is 3mm-8 mm.
5. The customized acetabular guide of claim 2, wherein: the length range of the spiral guide plate (21) is 2.5-6 times h, and h is the diameter of the acetabulum contusion to be used in the operation.
6. The customized acetabular guide of claim 1, wherein: the connecting rod (1) comprises a straight rod (11) connected with the positioning plate (3), an inclined rod (12) fixedly arranged at the other end of the straight rod (11) and a cross rod (13) with one end connected to one end of the straight rod (11) back to one end of the inclined rod (12), and the guide structure (2) is fixedly arranged at the other end of the cross rod (13).
7. The customized acetabular guide of claim 1, wherein: the length range of the connecting rod (1) is 100mm-180mm, and the width range is 3mm-10 mm.
8. The customized acetabular guide of claim 1, wherein: the positioning plate (3) and the connecting rod (1) are arranged at an included angle, a concave area (31) matched with the shape of a human bone is formed in the positioning plate (3), and the thickness range of the positioning plate (3) is 3-8 mm.
9. The customized acetabular guide of claim 1, wherein: fixed knot constructs stand (32) and locating plate (3) are the contained angle setting, and offer mounting hole (33) that are used for wearing to establish the kirschner wire on fixed knot structure stand (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020235313.6U CN212261448U (en) | 2020-02-29 | 2020-02-29 | Customized acetabulum guide plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020235313.6U CN212261448U (en) | 2020-02-29 | 2020-02-29 | Customized acetabulum guide plate |
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| CN212261448U true CN212261448U (en) | 2021-01-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111134771A (en) * | 2020-02-29 | 2020-05-12 | 北京市春立正达医疗器械股份有限公司 | Customized acetabular guide plate and method of use thereof |
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2020
- 2020-02-29 CN CN202020235313.6U patent/CN212261448U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111134771A (en) * | 2020-02-29 | 2020-05-12 | 北京市春立正达医疗器械股份有限公司 | Customized acetabular guide plate and method of use thereof |
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