CN204274530U - Dilator in TKA - Google Patents
Dilator in TKA Download PDFInfo
- Publication number
- CN204274530U CN204274530U CN201420678879.0U CN201420678879U CN204274530U CN 204274530 U CN204274530 U CN 204274530U CN 201420678879 U CN201420678879 U CN 201420678879U CN 204274530 U CN204274530 U CN 204274530U
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- China
- Prior art keywords
- dilator
- tka
- femur
- fagging
- handle
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Abstract
The utility model discloses dilator in a kind of TKA, belong to medical instruments field.This utility model can survey outside soft tissue balance in knee joint, comprises tong-like main body and struts end; Strut end and be arranged on tong-like body distal end, comprise femur side component and tibial side parts.Femur side component comprises U-shaped fagging and bearing sampling device; U-shaped fagging is divided into the interior ectocondyle of distal femur after osteotomy in the corresponding TKA art in inside and outside both sides; U-shaped fagging root has a bearing sampling device, and bearing sampling device has scale, the femur outward turning angle of trapezoidal gaps during corresponding Prosthesis flexion; The inside and outside both sides of U-shaped fagging can rotate along bearing sampling device.Tibial side parts are the rectangle fagging close with tibial plateau osteotomy surface shape.This utility model structure is simple, and cost is low, can compare femur side and tibial side both sides spacing simultaneously, to ensure that in TKA lateral balance inside and outside knee joint, is convenient to clinical expansion.
Description
Technical field
This utility model belongs to medical instruments field, is specifically related to dilator in a kind of TKA.
Background technology
TKA (Total Knee Arthroplasty, TKA) has become one of surgical intervention mode of the diseases such as degenerative osteoarthritis in late period, rheumatoid arthritis, ankylosing spondylitis.Because postoperative prolongation braking time and muscular training can not correct the unbalance of soft tissue, the balance of soft tissue depends on operation itself completely.Therefore, in TKA, soft tissue balance is and a step of key.In TKA, inside and outside knee joint, the experience of the main dependence operating doctor of lateral balance is with the hands assessed, and suitable effective aid is the important guarantee of operation.
Common dilator is one-sided work, and Main Function exposes operative region, is convenient to patient and operates, but cannot compare both sides spacing simultaneously.And senior instrument is such as with the spacing tester of pressure test component, cost is high, is not easy to clinical expansion.
Utility model content
The purpose of this utility model is that the shortcoming overcoming prior art is with not enough, provides dilator in a kind of TKA, and this dilator can survey outside soft tissue balance in knee joint.
The purpose of this utility model is achieved through the following technical solutions:
Dilator in a kind of TKA, comprises tong-like main body and struts end.The described end that struts is arranged on tong-like body distal end, comprises femur side component and tibial side parts; Femur side component comprises U-shaped fagging and bearing sampling device, and U-shaped fagging is divided into the interior ectocondyle of distal femur after osteotomy in inside and outside both sides (inside and outside lateral symmetry) corresponding TKA art; U-shaped fagging root has a bearing sampling device, and the inside and outside both sides of U-shaped fagging can rotate along bearing sampling device; Tibial side parts are the rectangle fagging close with tibial plateau osteotomy surface shape.
Described femur side component and the U-shaped fagging of tibial side parts and rectangle fagging are metallic plate, and fagging corner is round and smooth, can avoid damaging osteotomy surface.
Described bearing sampling device has scale, and the femur outward turning angle of trapezoidal gaps during corresponding Prosthesis flexion, in order to show the outward turning angle needed for femur osteotomy.Prosthese outward turning angle generally divides two kinds, and a kind of osteotomy post-buckling gap is parallel, and another kind of flexing gap is trapezoidal, so the scale on bearing sampling device divides two kinds, one is zero degree, and one is outward turning three degree.
Described tong-like main body comprises first handle, second handle, the bearing pin of hinged two handles, two stage clips, two screws and regulating positioning devices, and two stage clips mutually compression screw are separately fixed on first handle and second handle; Regulating positioning device can determine that dilator struts height, to determine joint space in TKA art.
Described regulating positioning device comprises hinged that arranges groove, the tooth shape locating bar connect by hinge and hinged table-hinges, and tooth shape locating bar is provided with tooth bar, and second handle end is fixed by tooth bar.
Described hinged is integral structure with first handle.
There is scale at the described tooth shape locating bar back side, can show dilator and strut end distance, and namely osteotomy patella stretches or flexing gap numerical value.
Described femur side component and tibial side parts are separately positioned on the far-end of second handle and first handle.
Strutting femur side component and tibial side parts both sides fagging plane keeping parallelism in process, because femur side component root has a bearing sampling device, the U-shaped fagging of femur side component can be rotated within the specific limits, if so interior outside is uneven, in the process that dilator struts, femur side there will be rotation, and tight side spacing can be less; When having loosened, after inside and outside lateral balance, interior outside will spacing equal, can allow intuitively like this and carry out assessing (if need flexing gap to be trapezoidal, then determining according to bearing sampling device).
This utility model has the following advantages and effect relative to prior art tool:
Whether femur side component of the present utility model is U-shaped fagging, is divided into inside and outside both sides, and femur side component root has a bearing sampling device, be convenient to can assess intuitively in patient's TKA outside in knee joint and balance; Tooth shape locating bar and bearing sampling device with the addition of scale and can allow patient's femur outward turning angle of trapezoidal gaps when joint space and Prosthesis flexion in control TKA art accurately.
This utility model structure is simple, and cost is low, can compare femur side and tibial side both sides spacing simultaneously, to ensure that in TKA lateral balance inside and outside knee joint, is convenient to clinical expansion.
Accompanying drawing explanation
Fig. 1 is the structural representation of dilator in TKA;
Fig. 2 is femur side component schematic diagram;
Fig. 3 is tibial side block diagram;
Fig. 4 is regulating positioning device bottom schematic view;
Accompanying drawing acceptance of the bid note is described below: 1, first handle, and 2, second handle, 3, bearing pin, 4, femur side component, (outward) side in 4-1, U-shaped fagging, outer (interior) side of 4-2, U-shaped fagging, 4-3, bearing sampling device, 5, tibial side parts, 6, regulating positioning device, 7, stage clip, 8, screw, 9, hinged, 10, hinge, 11, tooth shape locating bar, 12, tooth bar.
Detailed description of the invention
Below in conjunction with specific embodiment, further detailed description is done to this utility model.Should be understood that the following examples are only not used in restriction scope of the present utility model for illustration of this utility model.
Embodiment 1
Dilator in a kind of TKA, comprise tong-like main body and strut end, its structural representation as Figure 1-4.
Tong-like main body comprises first handle 1, second handle 2, the bearing pin 3 of hinged two handles, stage clip 7, screw 8 and regulating positioning device 6.Two mutual compression screws 8 of stage clip 7 are separately fixed on first handle 1 and second handle 2.Described regulating positioning device 6 comprises arrange groove hinged 9, by hinge 10 and hinged 9 hinged tooth shape locating bars 11, tooth shape locating bar 11 is provided with tooth bar 12, second handle 2 end is fixed by tooth bar 12.Wherein, hinged 9 is integral structure with first handle 1; There is scale at tooth shape locating bar 11 back side, can show dilator and strut end distance, and namely osteotomy patella stretches or flexing gap numerical value.
Strut end and be arranged on tong-like body distal end, comprise femur side component 4 and tibial side parts 5; Femur side component 4 and tibial side parts 5 are separately positioned on the far-end of second handle 2 and first handle 1.Femur side component 4 comprises U-shaped fagging and bearing sampling device 4-3, and U-shaped fagging is divided into the interior ectocondyle of distal femur after osteotomy in interior (outward) side 4-1, outer (interior) side 4-2 (inside and outside lateral symmetry) corresponding TKA art; U-shaped fagging root has a bearing sampling device 4-3, and inside and outside both sides 4-1 and 4-2 of U-shaped fagging can rotate along bearing sampling device 4-3; Bearing sampling device 4-3 has scale, the femur outward turning angle of trapezoidal gaps during corresponding Prosthesis flexion, in order to show the outward turning angle needed for femur osteotomy, described scale is zero degree or outward turning three degree.Tibial side parts 5 are the rectangle fagging close with tibial plateau osteotomy surface shape.The U-shaped fagging of femur side component 4 and tibial side parts 5 and rectangle fagging are metallic plate, and fagging corner is round and smooth, can avoid damaging osteotomy surface.
Strutting femur side component 4 and tibial side parts 5 both sides fagging plane keeping parallelism in process, because femur side component 4 root has a bearing sampling device 4-3, the U-shaped fagging of femur side component 4 can be rotated within the specific limits, if interior outside is uneven, in the process that dilator struts, femur side there will be rotation, and tight side spacing can be little; When having loosened, after inside and outside lateral balance, interior outside will spacing equal, can allow intuitively like this and carry out assessing (if need flexing gap to be trapezoidal, then determining according to bearing sampling device).
Claims (9)
1. a dilator in TKA, is characterized in that: comprise tong-like main body and strut end; The described end that struts is arranged on tong-like body distal end, comprises femur side component and tibial side parts; Described femur side component comprises U-shaped fagging and bearing sampling device; Described U-shaped fagging root has a bearing sampling device; Described tibial side parts are rectangle fagging.
2. dilator in TKA according to claim 1, is characterized in that: described femur side component and the U-shaped fagging of tibial side parts and rectangle fagging are metallic plate, and fagging corner is round and smooth.
3. dilator in TKA according to claim 1, is characterized in that: described bearing sampling device has scale, in order to show the outward turning angle needed for femur osteotomy.
4. dilator in TKA according to claim 3, is characterized in that: described scale is zero degree or outward turning three degree.
5. dilator in TKA according to claim 1, it is characterized in that: described tong-like main body comprises first handle, second handle, the bearing pin of hinged two handles, two stage clips, two screws and regulating positioning devices, two stage clips mutually compression screw are separately fixed on first handle and second handle.
6. dilator in TKA according to claim 5, is characterized in that: described regulating positioning device comprises hinged that arranges groove, the tooth shape locating bar connect by hinge and hinged table-hinges, and tooth shape locating bar is provided with tooth bar.
7. dilator in TKA according to claim 6, is characterized in that: described hinged is integral structure with first handle.
8. dilator in TKA according to claim 6, is characterized in that: there is scale at the described tooth shape locating bar back side.
9. dilator in TKA according to claim 5, is characterized in that: described femur side component and tibial side parts are separately positioned on the far-end of second handle and first handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420678879.0U CN204274530U (en) | 2014-11-14 | 2014-11-14 | Dilator in TKA |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420678879.0U CN204274530U (en) | 2014-11-14 | 2014-11-14 | Dilator in TKA |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204274530U true CN204274530U (en) | 2015-04-22 |
Family
ID=52857740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420678879.0U Expired - Fee Related CN204274530U (en) | 2014-11-14 | 2014-11-14 | Dilator in TKA |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204274530U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104367353A (en) * | 2014-11-14 | 2015-02-25 | 付奇伟 | Dilator in total knee arthroplasty |
-
2014
- 2014-11-14 CN CN201420678879.0U patent/CN204274530U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104367353A (en) * | 2014-11-14 | 2015-02-25 | 付奇伟 | Dilator in total knee arthroplasty |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20151114 |