CN215307045U - Bone repair prosthesis with PEEK (polyether-ether-ketone) outer sleeve - Google Patents
Bone repair prosthesis with PEEK (polyether-ether-ketone) outer sleeve Download PDFInfo
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- CN215307045U CN215307045U CN202121381179.1U CN202121381179U CN215307045U CN 215307045 U CN215307045 U CN 215307045U CN 202121381179 U CN202121381179 U CN 202121381179U CN 215307045 U CN215307045 U CN 215307045U
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- femoral stem
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Abstract
The utility model discloses a bone repair prosthesis with a PEEK outer sleeve, which relates to the technical field of bone prostheses and comprises an acetabulum, a ball head, a connecting rod, a femoral stem and a casing, wherein the acetabulum is provided with a hemispherical groove matched with the ball head, the ball head is connected to one end of the connecting rod, which is far away from the ball head, is fixedly connected with the femoral stem, the casing is sleeved on the femoral stem, the femoral stem is fixedly connected with a connecting block, the casing is provided with an inclined surface clamped with the connecting block, the upper end of the inclined surface inclines towards the direction far away from the femoral stem, the lower end of the casing is provided with a connecting groove, the casing is fixedly connected with a step positioned in the connecting groove, and the step is provided with a positioning surface. Acetabulum, femoral stem and cover shell all adopt with the individualized design of patient's skeleton adaptation to can effectively reduce the influence that causes the activity of patient's postoperative, reach the less advantage of influence to patient's postoperative activity, and can play the effect that prevents thighbone and cover shell and femoral stem relative motion.
Description
Technical Field
The utility model relates to the technical field of bone prostheses, in particular to a bone repair prosthesis with a PEEK outer sleeve.
Background
When malignant tumors such as femoral chondrosarcoma and osteosarcoma occur, tough and immovable round-like masses can be generated at the affected part of a patient, the tumors can press peripheral muscles, nerves and blood vessels to cause discomfort of the patient, and therefore, soft tissue tumors and tumor sections are often required to be removed in the treatment process. If only the tumor section is removed, the postoperative activity of the patient is seriously affected. Bone joint reconstruction is necessary to restore lower limb walking weight bearing function.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide a bone repair prosthesis with a PEEK casing, which has the advantage of having a small impact on the post-operative activities of the patient.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
the utility model provides a bone repair prosthesis with PEEK overcoat, includes acetabular bone, bulb, connecting rod, femoral stem and cover shell, the acetabular bone be equipped with bulb complex hemisphere groove, the bulb is connected in the one end of connecting rod, the one end and the femoral stem fixed connection of bulb are kept away from to the connecting rod, the femoral stem is located to the cover shell cover, femoral stem fixedly connected with connecting block, the cover shell be equipped with the inclined plane of connecting block joint, the inclined plane upper end is to the direction slope of keeping away from the femoral stem, the cover shell lower extreme is equipped with the spread groove, cover shell fixedly connected with is located the step of spread groove, the step is equipped with the locating surface.
As a further improvement of the utility model: the cross section of the middle part of the femoral stem is integrally rectangular, and the cross section of the lower end of the femoral stem is integrally circular.
As a further improvement of the utility model: the lower end of the femoral stem is fixedly connected with a hemispherical surface.
As a further improvement of the utility model: the connecting rod is close to the one end of bulb and is equipped with the toper section, the width of toper section reduces along the direction of being close to the bulb gradually, the bulb is equipped with the connecting hole that supplies toper section to insert, toper section and connecting hole are to the matching.
As a further improvement of the utility model: the connecting block is fixedly connected with the connecting rod.
As a further improvement of the utility model: the casing upper end fixedly connected with lug, the connecting block is located the upper end department of casing.
As a further improvement of the utility model: the lug is equipped with 2 at least locking holes, the locking hole runs through to the cover inside, femoral stem fixed mounting has 2 at least locking ropes, 2 at least different locking holes are worn to locate respectively to the locking rope, 2 at least the one end intertwine that the femoral stem was kept away from to the locking rope.
Compared with the prior art, the utility model has the beneficial effects that:
acetabulum, femoral stem and cover shell all adopt with the individualized design of patient's skeleton adaptation, install acetabulum and femoral stem respectively on patient's skeleton, the bulb is articulated with the acetabular ball for bulb, connecting rod and femoral stem can rotate for the acetabulum, thereby can remain the function of joint after making this prosthesis implant, thereby can effectively reduce the influence that causes patient's postoperative activity, reach the less advantage of influence to patient's postoperative activity.
The spread groove is used for cooperating with the thighbone, insert the thighbone in the spread groove to make step and thighbone joint, and locating surface and thighbone joint, thereby can fix a position the thighbone through the location face, make the position of thighbone in the spread groove keep fixed, and then can play the effect that prevents thighbone and cover shell and femoral stem relative motion, thereby effectively reduce the wearing and tearing of thighbone, femoral stem and cover shell, reach the advantage of being difficult to wearing and tearing.
After the thighbone is inserted into the connecting groove, the sleeve shell and the step are connected with the thighbone in a clamped mode, the lower end of the thighbone handle is inserted into a medullary cavity of the residual thighbone, supporting force can be provided for the lower end of the thighbone handle, the step and the sleeve shell, accordingly, the thighbone is stressed more uniformly, abrasion of the thighbone is reduced, abrasion of the thighbone, the thighbone handle and the sleeve shell can be reduced, and the advantages that the thighbone, the thighbone handle and the sleeve shell are not prone to abrasion are achieved.
The inclined plane upper end is to keeping away from the direction slope of femoral stem for connecting block and inclined plane joint, and make the cover shell can provide the holding power for the connecting block in inclined plane department, play the effect of supporting connecting block and femoral stem. The femoral stem is sleeved through the casing, and the casing can provide supporting force for the femoral stem and the connecting block in different directions through the inclined plane and the connecting block in a clamping mode, so that the effect of improving the stability of the femoral stem is achieved. The sleeve shell is sleeved outside the femoral stem, so that the femoral stem can be protected through the sleeve shell, the effects of reducing the weight of a prosthesis, reducing the stress shielding of the prosthesis and reducing the abrasion of the femoral stem can be achieved, and the effect of prolonging the service life of the femoral stem is achieved.
Through distal end hemisphere face and thighbone contact, can prevent that the thighbone handle pointed end from wearing out, can play the effect that increases the contact surface of thighbone handle and thighbone, can play the effect that improves the stability of thighbone handle and thighbone and reduce wearing and tearing, reach the advantage that is difficult to wearing and tearing.
Through all setting up connecting block and lug at the upper end of cover shell to make the cover shell can utilize the holding power that the lug provided to support the connecting block, thereby can further provide the structural stability of cover shell, prevent that the cover shell from warping and breaking.
Pass the locking hole through the locking rope to can make femoral stem and cover shell interlock through the locking rope, play the effect that improves stability between femoral stem and the cover shell, reach the effect that reduces femoral stem and cover shell wearing and tearing.
Drawings
FIG. 1 is a schematic representation of the construction of a bone repair prosthesis having a PEEK outer cover according to an embodiment of the present disclosure;
fig. 2 is an enlarged view of a in fig. 1.
Reference numerals: 11. an acetabulum; 12. a ball head; 13. a connecting rod; 14. connecting holes; 15. a tapered section; 21. a femoral stem; 22. connecting blocks; 23. a hemispherical surface; 31. a housing; 32. a bevel; 33. connecting grooves; 34. a step; 35. positioning the surface; 36. a bump; 37. a locking hole; 38. the cord is locked.
Detailed Description
The utility model will now be further described with reference to the accompanying description and examples:
example (b):
a bone repair prosthesis with a PEEK outer sleeve is shown in figures 1 and 2 and comprises an acetabulum 11, a ball head 12, a connecting rod 13, a femoral stem 21 and a shell 31, wherein the shell 31 is made of PEEK.
The acetabulum 11 is provided with a hemispherical groove matched with the ball head 12, the ball head 12 is connected at one end of the connecting rod 13, one end of the connecting rod 13 close to the ball head 12 is provided with a conical section 15, the width of the conical section 15 is gradually reduced along the direction close to the ball head 12, the ball head 12 is provided with a connecting hole 14 for the conical section 15 to be inserted, and the conical section 15 is matched with the connecting hole 14. One end of the connecting rod 13 far away from the ball head 12 is fixedly connected with a femoral stem 21, the femoral stem 21 is fixedly connected with a connecting block 22, and the connecting block 22 is fixedly connected with the connecting rod 13. The sleeve shell 31 is sleeved on the femoral stem 21, the sleeve shell 31 is provided with an inclined plane 32 clamped with the connecting block 22, the upper end of the inclined plane 32 inclines towards the direction far away from the femoral stem 21, the lower end of the sleeve shell 31 is provided with a connecting groove 33, the sleeve shell 31 is fixedly connected with a step 34 positioned in the connecting groove 33, and the step 34 is provided with a positioning surface 35. The cross section of the middle part of the femoral stem 21 is wholly rectangular, the cross section of the lower end of the femoral stem 21 is wholly circular, and the lower end of the femoral stem 21 is fixedly connected with a hemispherical surface 23.
The upper end of the casing 31 is fixedly connected with a lug 36, and the connecting block 22 is positioned at the upper end of the casing 31. The lug 36 is provided with 2 locking holes 37, the locking holes 37 penetrate into the sleeve 31, 2 locking ropes 38 are fixedly mounted on the femoral stem 21, the 2 locking ropes 38 are respectively arranged in the different locking holes 37 in a penetrating manner, and one ends of the 2 locking ropes 38 far away from the femoral stem 21 are mutually wound.
The embodiment has the following advantages:
the acetabulum 11, the femoral stem 21 and the casing 31 are all individually designed to be matched with the bone of the patient, and the acetabulum 11, the femoral stem 21 and the casing 31 which are individually designed are matched with the bone of the patient, so that the stability of the prosthesis implanted in the body of the patient can be effectively improved. Install acetabular bone 11 and femoral stem 21 respectively on patient's skeleton, bulb 12 and 11 ball joint of acetabular bone for bulb 12, connecting rod 13 and femoral stem 21 can rotate for acetabular bone 11, thereby can remain articular function after making this prosthesis implantation, thereby can effectively reduce the influence that causes patient's postoperative activity, reach the less advantage of influence to patient's postoperative activity.
Connecting groove 33 is used for cooperating with the thighbone, insert the thighbone in connecting groove 33, and make step 34 and thighbone joint, and locating surface 35 and thighbone joint, thereby can fix a position the thighbone through locating surface 35, make the position of thighbone in connecting groove 33 keep fixed, and then can play the effect that prevents thighbone and cover 31 and femoral stem 21 relative motion, thereby effectively reduce the thighbone, the wearing and tearing of femoral stem 21 and cover 31, reach the advantage of being difficult to wear and tear.
After the thighbone is inserted into the connecting groove 33, the sleeve 31 and the step 34 are connected with the thighbone in a clamping mode, the lower end of the thighbone handle 21 is inserted into a medullary cavity of the thighbone, supporting force can be provided for the lower end of the thighbone handle 21, the step 34 and the sleeve 31, accordingly, the thighbone is stressed more uniformly, abrasion of the thighbone is reduced, abrasion of the thighbone, the thighbone handle 21 and the sleeve 31 can be reduced, and the advantages that the thighbone is not easily abraded are achieved.
The upper end of the inclined plane 32 is inclined towards the direction far away from the femoral stem 21, so that the connecting block 22 is clamped with the inclined plane 32, and the sleeve 31 can provide supporting force for the connecting block 22 at the inclined plane 32 to play a role in supporting the connecting block 22 and the femoral stem 21. The femoral stem 21 is sleeved with the sleeve 31, and the sleeve 31 is clamped with the connecting block 22 through the inclined surface 32, so that the sleeve 31 can provide supporting force for the femoral stem 21 and the connecting block 22 in different directions, and the function of improving the stability of the femoral stem 21 is achieved. The sleeve 31 is sleeved outside the femoral stem 21, so that the femoral stem 21 can be protected through the sleeve 31, abrasion of the femoral stem 21 can be reduced, and the effect of prolonging the service life of the femoral stem 21 is achieved.
The whole rectangle that is of cross section in the middle part of femoral stem 21 makes the cover shell 31 when locating femoral stem 21 outside, and cover shell 31 can not rotate on femoral stem 21, plays the effect that improves the stability between femoral stem 21 and the cover shell 31 and reduce wearing and tearing. The cross section of the lower end of the femoral stem 21 is wholly circular, so that the lower end of the femoral stem 21 can be attached to the inner wall of a femoral medullary cavity, the effect of increasing the contact surface of the femoral stem 21 and the femur can be achieved, the effects of improving the stability of the femoral stem 21 and the femur and reducing abrasion can be achieved, and the advantage of being not easy to abrade is achieved.
Through hemisphere 23 and thighbone contact, can play the effect of increase femoral handle 21 and the contact surface of thighbone, can play the effect that improves femoral handle 21 and thighbone stability and reduce wearing and tearing, reach the advantage that is difficult to wear and tear.
The conical section 15 is inserted into the connecting hole 14, so that the conical section 15 is clamped with the ball head 12, the femoral stem 21 can provide supporting force for the ball head 12 through the connecting rod 13, and the connecting rod 13 and the ball head 12 are installed and connected.
The bump 36 is fixedly connected with the connecting rod 13, and plays a role in improving the structural stability of the connecting rod 13.
Through the setting of lug 36, can provide the holding power for cover shell 31 through lug 36, play the effect that improves cover shell 31 structural stability. Since the upper end of the inclined surface 32 is inclined away from the femoral stem 21, the shell 31 is pressed in different directions at the inclined surface 32. By arranging both the joint block 22 and the boss 36 at the upper end of the casing 31, the casing 31 can support the joint block 22 with the supporting force provided by the boss 36, thereby further providing structural stability of the casing 31 and preventing deformation and breakage of the casing 31.
The locking rope 38 passes through the locking hole 37, so that the femoral stem 21 and the sleeve 31 can be mutually locked through the locking rope 38, the effect of improving the stability between the femoral stem 21 and the sleeve 31 is achieved, and the effect of reducing the abrasion of the femoral stem 21 and the sleeve 31 is achieved.
In summary, after reading the present disclosure, those skilled in the art can make various other corresponding changes without creative mental labor according to the technical solutions and concepts of the present disclosure, and all of them are within the protection scope of the present disclosure.
Claims (7)
1. A bone repair prosthesis having a PEEK jacket, comprising: including acetabular bone (11), bulb (12), connecting rod (13), femoral stem (21) and cover shell (31), acetabular bone (11) are equipped with the hemisphere groove with bulb (12) complex, bulb (12) are connected in the one end of connecting rod (13), the one end and femoral stem (21) fixed connection of bulb (12) are kept away from in connecting rod (13), femoral stem (21) are located in cover shell (31), femoral stem (21) fixedly connected with connecting block (22), cover shell (31) are equipped with inclined plane (32) with connecting block (22) joint, inclined plane (32) upper end is to the direction slope of keeping away from femoral stem (21), cover shell (31) lower extreme is equipped with spread groove (33), cover shell (31) fixedly connected with is located step (34) in spread groove (33), step (34) are equipped with locating surface (35).
2. A bone repair prosthesis having a PEEK jacket according to claim 1, wherein: the cross section of the middle part of the femoral stem (21) is wholly rectangular, and the cross section of the lower end of the femoral stem (21) is wholly circular.
3. A bone repair prosthesis having a PEEK jacket according to claim 1, wherein: the lower end of the femoral stem (21) is fixedly connected with a hemispherical surface (23).
4. A bone repair prosthesis having a PEEK jacket according to claim 1, wherein: the connecting rod (13) is close to the one end of bulb (12) and is equipped with toper section (15), the width of toper section (15) reduces along the direction of being close to bulb (12) gradually, bulb (12) are equipped with and supply toper section (15) male connecting hole (14), toper section (15) and connecting hole (14) are to matching.
5. A bone repair prosthesis having a PEEK jacket according to claim 1, wherein: the connecting block (22) is fixedly connected with the connecting rod (13).
6. A bone repair prosthesis having a PEEK outer cover according to any one of claims 1 to 5, wherein: the upper end of the casing (31) is fixedly connected with a lug (36), and the connecting block (22) is positioned at the upper end of the casing (31).
7. The bone repair prosthesis with a PEEK jacket according to claim 6, wherein: lug (36) are equipped with 2 at least locking holes (37), locking hole (37) run through to inside cover shell (31), femoral stem (21) fixed mounting has 2 at least locking rope (38), 2 at least locking rope (38) wear to locate different locking holes (37) respectively, 2 at least locking rope (38) keep away from one end intertwine of femoral stem (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121381179.1U CN215307045U (en) | 2021-06-21 | 2021-06-21 | Bone repair prosthesis with PEEK (polyether-ether-ketone) outer sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121381179.1U CN215307045U (en) | 2021-06-21 | 2021-06-21 | Bone repair prosthesis with PEEK (polyether-ether-ketone) outer sleeve |
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| Publication Number | Publication Date |
|---|---|
| CN215307045U true CN215307045U (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121381179.1U Active CN215307045U (en) | 2021-06-21 | 2021-06-21 | Bone repair prosthesis with PEEK (polyether-ether-ketone) outer sleeve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116269946A (en) * | 2023-05-12 | 2023-06-23 | 北京爱康宜诚医疗器材有限公司 | Femoral head surface replacement prosthesis |
-
2021
- 2021-06-21 CN CN202121381179.1U patent/CN215307045U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116269946A (en) * | 2023-05-12 | 2023-06-23 | 北京爱康宜诚医疗器材有限公司 | Femoral head surface replacement prosthesis |
| CN116269946B (en) * | 2023-05-12 | 2023-10-27 | 北京爱康宜诚医疗器材有限公司 | Femoral head surface replacement prosthesis |
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