CN103006299A - Adjustable osteotomy plate - Google Patents

Abstract

The invention relates to an adjustable osteotomy plate comprising an osteotomy plate body, wherein four guide slots in which an osteotomy appliance is inserted are arranged on the osteotomy plate body, the osteotomy plate body is formed by splicing 3 or 4 unit plates which are detachably connected, each unit plate is at least provided with one of the guide slots, and the distances between the guide slots are adjusted by changing the distances between the unit plates. Compared to the conventional osteotomy plate, the adjustable osteotomy plate disclosed by the invention has the advantages that the number of the osteotomy plate is reduced, the costs of the osteotomy plate and an operation are reduced, and the surgical instrument manufacturing technique level is enhanced; by the adoption of protection slots arranged at the end parts of the guide slots, operation staffs are prevented from being scratched by metal filings generated by the guide slots because osteotomy appliances such as a bone saw rub against the guide slots; and an active auxo-action is brought in the miniaturization and modularization development of orthopedic surgical instruments.

Description

A kind of adjustable osteotomy plate

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Technical field

The present invention relates to a kind of operating theater instruments of in replacement knee in arthroplasty, using, the adjustable osteotomy plate that uses when particularly condyle of femur being carried out osteotomy.

 

Background technology

At present, in knee joint condyle of femur replacement operation, at first need to select according to the kneed size of patient the model of the artificial knee joint prosthesis of approximate match, again according to the model of artificial knee joint prosthesis, to condyle of femur carry out osteotomy can with the prosthese Matching installation.In the osteotomy process, need a kind of traditional deep template, also be four unification osteotomy plates, be provided with 4 gathering sills in deep template, the deep apparatus such as bone saw is stretched into by 4 gathering sills condyle of femur is cut mill, and 4 gathering sills along one four unification osteotomy plate carry out osteotomy and can finish operation usually.In operation process, at first need to measure patient's condyle of femur size by the condyle of femur survey tool, determine simultaneously the osteotomy plate installation site; Secondly select the osteotomy plate that is complementary with it according to the size that records condyle of femur, and osteotomy plate is fixed on the condyle of femur far-end; Again the condyle of femur osteotomy is become the polyhedron-shaped and size dimension that is complementary with artificial knee joint prosthesis by deep apparatuses such as bone saws.

Because each patient's condyle of femur size dimension is widely different, the four unification osteotomy plates that need plurality of specifications to be complementary, so traditional deep template of four unifications, the deficiency that the quantity that always existence needs is many, weight large, carry inconvenience, cost is high, therefore, reducing four unification osteotomy plate quantity, weight reduction, optimal design, simplified manufacturing technique, reduce cost, is the problem that domestic and international artificial joint company extremely pays close attention to.

 

Summary of the invention

For problems of the prior art, the object of the present invention is to provide a kind of adjustable osteotomy plate, this osteotomy plate all is provided with gathering sill by traditional osteotomy plate is divided into a plurality of cell boards on every module unit plate, adjusts the spacing of described gathering sill by the spacing that changes cell board.This mode has not only reduced the quantity of osteotomy plate, has reduced the cost of osteotomy plate and operation, and simple operation, and reliability is high.

To achieve these goals, a kind of adjustable osteotomy plate of the present invention, comprise the osteotomy plate body, offer the gathering sill that 4 deep apparatuses of confession insert on the osteotomy plate body, described osteotomy plate body is spliced by 3 or 4 cell boards that removably connect, at least be provided with a described gathering sill on the every described cell board, adjust the spacing of described gathering sill by the spacing that changes cell board.

Further, be provided with on the described cell board for the connected structure that connects two cell boards, described connected structure comprises plug, jack and locking device, described plug and described jack mutually mate and are separately positioned on two cell boards, described locking device is used for plug is fixed in the jack, it is adjustable that plug enters the degree of depth of jack, and the spacing that enters the degree of depth of jack and then adjust two cell boards by regulating plug.

Further, be provided with length mark on the described plug.

Further, be provided with releasable securing apparatus on the described cell board, described clamp device constraint cell board closely reclines, and is provided with to have certain thickness pad the spacing of regulating described cell board by the described pad of changing different-thickness between the cell board.

Further, described pad is made by elastomeric material.

Further, also be provided with the handle of controlling for operator on the described cell board, described handle is fixed therein on a module unit plate or a few module unit plate by its installing hole is dismountable.

Further, the end of described gathering sill offers be used to avoiding metallic bur power to stab operator's protective trough.

Further, the insertion end of the described deep apparatus insertion of described gathering sill confession is provided with and is convenient to the guide table that deep apparatus enters gathering sill.

Further, described osteotomy plate body cooperates the mode of pin joint to be fixed on the femur by pin and pin-and-hole.

The present invention compares with traditional osteotomy plate, has reduced the quantity of osteotomy plate, has reduced the cost of osteotomy plate and operation, improves the operating theater instruments manufacturing technology level; By in the gathering sill end protective trough being set, avoided because the deep apparatus such as bone saw and gathering sill friction make the metallic bur power scratch operator of gathering sill generation; Make bone surgery set to miniaturization, modularization development active promoting function be arranged.

 

Description of drawings

Fig. 1 is the sketch map of cell board spacing minimum in the first version of the present invention;

Fig. 2 is the profile of A-A among Fig. 1;

Fig. 3 is the sketch map after the cell board spacing is regulated in the first version of the present invention;

Fig. 4 is the profile of B-B among Fig. 3;

Fig. 5 is the sketch map of the second version of the present invention;

Fig. 6 is the sketch map of the third version of the present invention;

Fig. 7 is the profile of C-C among Fig. 6;

Fig. 8 is the sketch map of cell board spacing minimum in the third version of the present invention.

 

The specific embodiment

The invention will be further described below in conjunction with specific embodiment.

Shown in Fig. 1-4, the first version for a kind of adjustable osteotomy plate of the present invention, the osteotomy plate body is made of 4 module unit plates, wherein 4 module unit plates are respectivelypreartis plate 4,front swash plate 5,back incline 6 andpostartis plate 7,4gathering sills 81 are set on the deep body, 82,83,84, these 4gathering sills 81,82,83,84 are separately positioned on the 4 module unit plates, be provided with on the cell board for the connected structure that connects two cell boards, connected structure comprises plug, jack and locking device, plug is for being with graduatedadjustable ruler 3 in the present embodiment, the shape of jack and length andadjustable ruler 3 are complementary, makeadjustable ruler 3 can be plugged in the jack and the degree of depth that can regulate insertion, adjust gatheringsill 81 by changing insertion depth, 82,83,84 spacing.Adjustable ruler 3 and jack are separately positioned on two adjacent cell boards, locking device is used for plug is fixed in the jack, as long as can be that steady pin or other locking devices can make plug relative with jack fixing, preferably betweenpreartis plate 4 andfront swash plate 5, be connected by two connected structures in the present embodiment, be connected by two connected structures betweenback incline 6 and thepostartis plate 7, and be connected by a connected structure betweenfront swash plate 5 and theback incline 6, guaranteed when simplifying the Adjustment operation number of times that like this steadiness of osteotomy plate body construction satisfies the needs of operation.Are connected with back incline atfront swash plate 5 and offer the installinghole 1 that common handle (not shown) connects, the effect of handle is better to control adjustable osteotomy plate of the present invention for operator are more enough, is convenient to operation technique.Handle is connected by dismountable mode with installinghole 1, for example is threaded or the straight cutting rivetedjoint.Gathering sill 81; 82; 83; 84 angles of inclination of offering are prior art; do not give unnecessary details in the present invention; at gatheringsill 81; 82; 83; 84 end offersprotective trough 2; the effect ofprotective trough 2 is protection operator; because at deep apparatuses such as bone saws at gatheringsill 81; 82; 83; when cutting bone operation is carried out in 84 interior reciprocating motions; unavoidably meeting and gatheringsill 81; 82; 83; 84 end phase mutual friction produces metallic bur power; stab operator; and 2 of protective troughs have been opened in the end of thegathering sill 81 that is positioned on thepostartis plate 7 in the present embodiment; even if produce like this metallic bur power; becauseprotective trough 2 has certain depth; so that burr can't be stabbed operator, can certainly be arranged on other cell boards.The osteotomy plate body cooperates the mode of pin joint to be fixed on the femur by pin and pin-and-hole, as Fig. 2 and shown in Figure 4,pin 10 arranges on the osteotomy plate body, concrete is fixed on thefront swash plate 5, can certainly be fixed on other cell boards, be preferred version onfront swash plate 5 and theback incline 6 but be fixed on, and the pin-and-hole (not shown) is opened on the femur, is used forpin 10fixing.Gathering sill 81,82,83,84 is positioned at the insertion end of inserting for deep apparatus and is provided with guide table 9, and the effect of guide table 9 is to enter gatheringsill 81,82,83,84 to deep apparatus to provide guiding, is convenient to entering of deep apparatus, handled easily.In the present embodiment, guide table 9 has been arranged on thegathering sill 81 of thegathering sill 84 that is positioned atpreartis plate 4 andpostartis plate 7.

In use, at first determine the distance of needs between eachgathering sill 81,82,83,84 according to prior measurement, next is regulatedadjustable ruler 3 and makes gatheringsill 81,82,83,84 spacing and by locking devices such as steady pinsadjustable ruler 3 and jack are fixed, gatheringsill 81,82,83,84 spacing minimum are seen Fig. 1 and Fig. 2 whenadjustable ruler 3 enters jack fully, state whenadjustable ruler 3 does not enter jack is fully seen Fig. 3 and Fig. 4, then the osteotomy plate body is fixed on bypin 10 and carries out cutting bone operation on the femur.

As shown in Figure 5, basic identical with the first version for the second specific constructive form of the present invention, its difference is, changes thepin 10 in the first version into pin-and-hole 11, and the pin that matches with pin-and-hole 11 is fixed on the femur.

Such as Fig. 6, Fig. 7 and shown in Figure 8, be the third specific constructive form of the present invention, basic identical with the first version, its difference is, the osteotomy plate body is made of 3 cell boards, comprisesback incline 6,postartis plate 7 andheader board 11, and 4gathering sills 81,82,83,84 are set on the deep body, gatheringsill 81,82 is separately positioned onpostartis plate 7 and theback incline 6, and gatheringsill 83,84 is arranged on the header board 11.From another perspective,header board 11 is merging ofpreartis plate 4 andfront swash plate 5 in the first version, and the distance that certainly is applicable in this case between thegathering sill 83,84 does not need to regulate.

Be provided with releasable securing apparatus on the cell board, clamp device constraint cell board closely reclines, and is provided with between the cell board to havecertain thickness pad 12, comes the spacing of regulon plate by thepad 12 of changing different-thickness.Clamp device has various ways, for example utilize the fasteningbolt 13 that uses in rope winding or the present embodiment, need to offer screwed hole atback incline 6,postartis plate 7 andheader board 11 when adoptingfastening bolt 13, fasteningbolt 13 passes screwedhole 3module unit plates 6,7,11 is connected successively, byscrewing fastening bolt 13 3module unit plates 6,7,11 is closely reclined.Preferablypad 12 is made by elastomeric material.

In use, at first determine gatheringsill 81 according to prior measurement, 82, the distance that needs between 83, next selects the mutually compound pad of thickness and requireddistance 12 to be placed betweenheader board 11 and theback incline 6, and betweenback incline 6 and thepostartis plate 7, andscrew fastening bolt 13 and make 3module unit plates 6,7,11 closely recline mutually, whenpad 12 not being set, it is gatheringsill 81,82,83 spacing minimum state is seen Fig. 8, the state of osteotomy plate body is seen Fig. 6 and Fig. 7 whenpad 12 is set, and then the osteotomy plate body is fixed on bypin 10 and carries out cutting bone operation on the femur.

 

Above-mentioned example just is used for explanation the present invention, and embodiments of the present invention are not limited to these examples, and the various specific embodiment that meet inventive concept that those skilled in the art make are all within protection scope of the present invention.

Claims (9)

1. adjustable osteotomy plate, comprise the osteotomy plate body, offer the gathering sill that 4 deep apparatuses of confession insert on the osteotomy plate body, it is characterized in that, described osteotomy plate body is spliced by 3 or 4 cell boards that removably connect, at least be provided with a described gathering sill on the every described cell board, adjust the spacing of described gathering sill by the spacing that changes cell board.

2. adjustable osteotomy plate as claimed in claim 1, it is characterized in that, be provided with on the described cell board for the connected structure that connects two cell boards, described connected structure comprises plug, jack and locking device, described plug and described jack mutually mate and are separately positioned on two cell boards, described locking device is used for plug is fixed in the jack, and it is adjustable that plug enters the degree of depth of jack, and the spacing that enters the degree of depth of jack and then adjust two cell boards by regulating plug.

3. adjustable osteotomy plate as claimed in claim 2 is characterized in that, is provided with length mark on the described plug.

4. adjustable osteotomy plate as claimed in claim 1, it is characterized in that, be provided with releasable securing apparatus on the described cell board, described clamp device constraint cell board closely reclines, be provided with between the cell board and have certain thickness pad, the spacing of regulating described cell board by the described pad of changing different-thickness.

5. adjustable osteotomy plate as claimed in claim 4 is characterized in that, described pad is made by elastomeric material.

6. such as the arbitrary described adjustable osteotomy plate of claim 1-5, it is characterized in that also be provided with the handle of controlling for operator on the described cell board, described handle is fixed therein on a module unit plate or a few module unit plate by its installing hole is dismountable.

7. such as the arbitrary described adjustable osteotomy plate of claim 1-5, it is characterized in that the end of described gathering sill offers be used to avoiding metallic bur power to stab operator's protective trough.

8. such as the arbitrary described adjustable osteotomy plate of claim 1-5, it is characterized in that the insertion end that described gathering sill inserts for described deep apparatus is provided with is convenient to the guide table that deep apparatus enters gathering sill.

9. such as the arbitrary described adjustable osteotomy plate of claim 1-5, it is characterized in that described osteotomy plate body cooperates the mode of pin joint to be fixed on the femur by pin and pin-and-hole.

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