CN211433152U - Wedge-shaped spacer for osteotomy around knee joint - Google Patents
Wedge-shaped spacer for osteotomy around knee joint Download PDFInfo
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- CN211433152U CN211433152U CN201922325501.8U CN201922325501U CN211433152U CN 211433152 U CN211433152 U CN 211433152U CN 201922325501 U CN201922325501 U CN 201922325501U CN 211433152 U CN211433152 U CN 211433152U
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- spacer
- gasket
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- wedge
- base
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Abstract
The utility model discloses a wedge-shaped spacer for osteotomy around knee joint, which comprises a top spacer, wherein the inner side wall of the top spacer is provided with an arc-shaped surface, the bottom of the top spacer is provided with a spacer base, the middle parts of the top spacer and the spacer base are fixedly connected through a screw rod, the middle part of the top of the screw rod is provided with an embedded rotating shaft positioned inside the top spacer, the bottom of the top spacer is provided with a first connecting groove matched with the embedded rotating shaft and the screw rod for use, and the middle part of the bottom end of the screw rod is rotatably connected with an adjusting ring positioned inside the spacer base; through the setting of adjustable ring, screw rod, very big increase the practicality of gasket, use through the cooperation of adjustable ring, screw rod, can carry out altitude mixture control to the gasket for medical personnel can adjust according to patient's skeleton gap, make the gasket adaptation, and adjust simple work rapidly, and is comparatively stable, has guaranteed the smooth progress of work, has reduced the work degree of difficulty.
Description
Technical Field
The utility model relates to a gasket technical field especially relates to a wedge gasket cuts bone around knee joint.
Background
With the popularization of domestic knee joint replacement and the improvement of the sensitivity of patients to pain, the number of knee joint replacement increases year by year, and the age distribution of knee joint replacement revision is also more and more younger. In order to delay the youth of knee joint revision, the famous doctors of bone diseases in China in recent years propose different technologies for the stepped treatment of knee joint degenerative diseases, and the knee protection and the knee replacement are performed simultaneously.
The medial and lateral deformity of the unicondylar knee osteoarthritis causes abnormal distribution of load-bearing stress in the joints, such as a deformity in the knee, which causes stress concentration in the medial side of the knee joint and accelerates the degeneration of the medial joint. When the knee joint is deformed outward, the stress on the outer side of the joint is concentrated, so that the degeneration of the outer joint is accelerated. For the internal and external deformity generated by the unicondylar knee osteoarthritis, the biomechanical principle of the osteotomy treatment is as follows: after osteotomy, the wedge-shaped gasket is implanted into the wedge-shaped osteotomy area to independently exist or be matched with a bone plate to correct deformity, change the load bearing line of the affected limb, correct poor alignment, correct the uneven stress distribution on the knee joint, redistribute the stress on the knee joint surface, relieve the symptoms of osteoarthritis and slow down the progress of joint lesion.
Through the retrieval, chinese patent No. CN208905715U discloses a wedge-shaped osteotomy spacer around knee joint, which comprises a die-shaped spacer body, wherein the thickness of the wedge-shaped spacer body gradually decreases towards one side, an osteotomy fixing zone is arranged in the middle of the wedge-shaped spacer body, and a titanium alloy, pure titanium or a diamond chromium button alloy material is used for providing long-term effective bone support of the die-shaped osteotomy zone, reducing the risk of bone resorption, promoting the osseointegration of the die-shaped osteotomy zone, and simultaneously providing an osteotomy fixing zone for total knee joint replacement.
But the gasket height is difficult to adjust in this patent, because the gasket is placed in human inside, and every patient's inside gap of skeleton is different, directly including placing the gasket, not only be difficult to play the effect of treatment, simultaneously great to human misery, medical personnel adjust more loaded down with trivial details complicacy according to patient's size, not only adjust the degree of difficulty great, delay the normal progress of work simultaneously, increased the work degree of difficulty.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the inside gap difference of every patient's skeleton that exists among the prior art, directly including placing the gasket, not only be difficult to play the effect of treatment, it is great to human misery simultaneously, medical personnel adjust defects such as more loaded down with trivial details complicacy according to patient's size, and a knee joint that proposes cuts bone wedge gasket on every side.
In order to achieve the above purpose, the utility model adopts the following technical scheme: an osteotomy wedge-shaped gasket around a knee joint comprises a top gasket, wherein the inner side wall of the top gasket is provided with an arc-shaped surface, the bottom of the top gasket is provided with a gasket base, the middle parts of the top gasket and the gasket base are fixedly connected through a screw rod, the middle part of the top of the screw rod is provided with an embedded rotating shaft positioned in the top gasket, the bottom of the top gasket is provided with a first connecting groove matched with the embedded rotating shaft and the screw rod for use, the middle part of the bottom end of the screw rod is rotatably connected with an adjusting ring positioned in the gasket base, the inside of the gasket base is provided with a second connecting groove matched with the screw rod and the adjusting ring for use, the surface of one side of the gasket base is provided with an adjusting groove matched with the adjusting ring for use, one end of the top gasket and the gasket base, the gasket base is connected with the outer ring of the adjusting bearing, and a graduated scale is arranged right above the adjusting groove on the surface of the gasket base.
Further, the adjusting groove is communicated with the second connecting groove.
Furthermore, a plurality of adjusting lugs are uniformly distributed on the outer side wall of the adjusting ring.
Furthermore, the surface of the outer side wall of the screw rod is provided with an external thread, and the inner side wall of the adjusting ring is provided with an internal thread matched with the external thread for use.
Furthermore, the outer ring of the embedded rotating shaft is fixed with the top gasket, and the inner ring of the embedded rotating shaft is connected with the screw rod.
Furthermore, the shape of adjustment groove is the rectangle, and the length of adjustment groove is greater than the length of adjustable ring, the width of adjustment groove is greater than the width of adjustable ring.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. through the setting of adjustable ring, screw rod, very big increase the practicality of gasket, use through the cooperation of adjustable ring, screw rod, can carry out altitude mixture control to the gasket for medical personnel can adjust according to patient's skeleton gap, make the gasket adaptation, and adjust simple work rapidly, and is comparatively stable, has guaranteed the smooth progress of work, has reduced the work degree of difficulty.
2. Through the setting of adjustment tank, regulation lug for the regulation of screw rod is more convenient, uses through the cooperation of adjustment tank, regulation lug, and the effectual displacement that has changed the screw rod for top gasket, gasket base pass through the height that the screw rod was adjusted, easy operation, and the component part is less, facilitate promotion and use.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a schematic view of the overall structure of a wedge-shaped osteotomy spacer for knee joint of the present invention;
fig. 2 is a front sectional view of a top gasket, a gasket base, a graduated scale, an adjusting ring, an adjusting groove and a screw of the osteotomy wedge-shaped gasket around the knee joint;
fig. 3 is a side sectional view of a top gasket, a gasket base, an adjusting ring, an adjusting groove, a screw, an embedded rotating shaft, a first connecting groove, an adjusting bearing, and a second connecting groove of the osteotomy wedge-shaped gasket around the knee joint according to the present invention;
fig. 4 is a top view of the adjusting ring, screw and adjusting lug of the wedge-shaped osteotomy spacer of the present invention.
In the figure: 1. a top gasket; 2. an arc-shaped surface; 3. a gasket base; 4. a graduated scale; 5. an adjusting ring; 6. an adjustment groove; 7. a screw; 8. a rotating shaft is embedded; 9. a first connecting groove; 10. adjusting the bearing; 11. a second connecting groove; 12. and adjusting the lug.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1-4, a wedge-shaped spacer for osteotomy around knee joint comprises a top spacer 1, an arc-shaped surface 2 is arranged on the inner side wall of the top spacer 1, a spacer base 3 is arranged at the bottom of the top spacer 1, the middle parts of the top spacer 1 and the spacer base 3 are connected and fixed through a screw 7, an embedded rotating shaft 8 positioned in the top spacer 1 is arranged in the middle of the top of the screw 7, when the screw 7 rotates, the embedded rotating shaft 8 is used for adjusting the rotating degree of the screw 7, so that the top spacer 1 cannot rotate along with the screw, a first connecting groove 9 matched with the embedded rotating shaft 8 and the screw 7 is arranged at the bottom of the top spacer 1, the first connecting groove 9 is used for accommodating the embedded rotating shaft 8 and the screw 7, an adjusting ring 5 positioned in the spacer base 3 is rotatably connected at the middle part of the bottom of the screw 7, and the screw 7, gasket base 3's inside seted up with the screw rod 7, the second spread groove 11 that the cooperation of adjustable ring 5 was used, second spread groove 11 is used for accomodating adjustable ring 5, screw rod 7, the adjustment tank 6 that uses with the cooperation of adjustable ring 5 is seted up to one side surface of gasket base 3, can effectual regulation adjustable ring 5's rotation through adjustment tank 6, top gasket 1, the one end that screw rod 7 was kept away from to gasket base 3 is rotated and is connected with adjusting bearing 10, and top gasket 1 is connected with adjusting bearing 10's inner circle, gasket base 3 is connected with adjusting bearing 10's outer lane, can effectually with top gasket 1 through adjusting bearing 10, the one end of gasket base 3 rotates and connects, the surface of gasket base 3 is located and is equipped with scale 4 directly over adjustment tank 6.
The adjusting groove 6 is communicated with the second connecting groove 11, so that the adjustment of the adjusting ring 5 is facilitated.
A plurality of adjusting lugs 12 are uniformly distributed on the outer side wall of the adjusting ring 5, and the adjusting lugs 12 are arranged to enable the adjusting ring 5 to rotate more conveniently.
The lateral wall surface of screw rod 7 is equipped with the external screw thread, and the inside wall of adjustable ring 5 is equipped with the internal thread that uses with the external screw thread cooperation, and it is convenient not only to adjust in the setting of inside and outside screw thread, makes the gasket stability when using higher simultaneously.
The outer ring of the embedded rotating shaft 8 is fixed with the top gasket 1, and the inner ring of the embedded rotating shaft 8 is connected with the screw 7, so that the screw 7 can be conveniently adjusted and used.
The shape of adjustment tank 6 is the rectangle, and the length of adjustment tank 6 is greater than the length of adjustable ring 5, and the width of adjustment tank 6 is greater than the width of adjustable ring 5 for staff's accessible adjustment tank 6 carries out effectual regulation to adjustable ring 5.
The utility model discloses a theory of operation and use flow:
only need according to patient's bone gap, adjust the height of gasket, rotatory adjustable ring 5 for adjustable ring 5 is through the height of interior, the rotatory adjusting screw 7 of external screw thread, and embedded pivot 8 makes screw 7 can not make top gasket 1 rotate when height-adjusting simultaneously, can adjust top gasket 1, gasket base 3 to the height of patient's demand.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. A wedge-shaped spacer for osteotomy around a knee joint comprises a top spacer (1), wherein the inner side wall of the top spacer (1) is provided with an arc-shaped surface (2), and is characterized in that the bottom of the top spacer (1) is provided with a spacer base (3), the middle parts of the top spacer (1) and the spacer base (3) are fixedly connected through a screw (7), the middle part of the top of the screw (7) is provided with an embedded rotating shaft (8) positioned inside the top spacer (1), the bottom of the top spacer (1) is provided with a first connecting groove (9) matched with the embedded rotating shaft (8) and the screw (7) for use, the middle part of the bottom end of the screw (7) is rotatably connected with an adjusting ring (5) positioned inside the spacer base (3), the inside of the spacer base (3) is provided with a second connecting groove (11) matched with the screw (7) and the, the utility model discloses a gasket seat, including gasket base (3), screw rod (7), regulation groove (6) that cooperate and use with adjustable ring (5) are seted up to one side surface of gasket base (3), the one end rotation that screw rod (7) were kept away from in top gasket (1), gasket base (3) is connected with regulation bearing (10), just top gasket (1) is connected with the inner circle of regulation bearing (10), gasket base (3) are connected with the outer lane of regulation bearing (10), the surface of gasket base (3) is located regulation groove (6) directly over and is equipped with scale (4).
2. A peri-knee osteotomy wedge spacer according to claim 1, wherein said adjustment groove (6) communicates with a second attachment groove (11).
3. Wedge-shaped spacer for osteotomy around a knee joint according to claim 1, characterised in that a plurality of adjustment cams (12) are evenly distributed on the outer lateral wall of said adjustment ring (5).
4. Wedge-shaped spacer for osteotomy around knee joint according to claim 1, wherein the outer side wall surface of said screw (7) is provided with an external thread and the inner side wall of said adjusting ring (5) is provided with an internal thread for cooperation with the external thread.
5. Wedge-shaped spacer for osteotomy around a knee joint according to claim 1, wherein the outer ring of said embedded shaft (8) is fixed to the top spacer (1) and the inner ring of said embedded shaft (8) is connected to the screw (7).
6. A periknee osteotomy wedge spacer according to claim 1, wherein said adjustment slot (6) is rectangular in shape and the length of the adjustment slot (6) is greater than the length of the adjustment ring (5), the width of the adjustment slot (6) being greater than the width of the adjustment ring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922325501.8U CN211433152U (en) | 2019-12-20 | 2019-12-20 | Wedge-shaped spacer for osteotomy around knee joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922325501.8U CN211433152U (en) | 2019-12-20 | 2019-12-20 | Wedge-shaped spacer for osteotomy around knee joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211433152U true CN211433152U (en) | 2020-09-08 |
Family
ID=72294706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922325501.8U Expired - Fee Related CN211433152U (en) | 2019-12-20 | 2019-12-20 | Wedge-shaped spacer for osteotomy around knee joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211433152U (en) |
-
2019
- 2019-12-20 CN CN201922325501.8U patent/CN211433152U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200908 Termination date: 20211220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |