A kind of hip joint bone cement spacer mould of adjustable sizeTechnical field
The utility model is related to medical instruments field, and in particular to a kind of hip joint bone cement spacer of adjustable sizeMould.
Background technology
Infection with Tunnel after Total Hip Arthroplasty is a kind of catastrophic complication, and its treatment is one for orthopedistPlant very big challenge.The second stage of revision procedure is considered as " goldstandard " for treating Infection with Tunnel after Total Hip Arthroplasty：Will be artificialHip prosthesis takes out, thorough debridement, after second operation is carried out after infection control again, is implanted into new artificial hip prosthesis.During infection control, using hip joint spacer, holding hip joint tensity can be played, prevent hip joint surrounding soft tissueContracture and influence the second stage of revision procedure effect, and can localized supplies high concentration antibiotic, infection control.Therefore hip joint occupy-placeDevice has become the main flow therapeutic modality for the treatment of infected hip arthroplasty.Development on hip joint spacer, experiencedThe metal occupying device of irrigation type, craft are pinched the occupying device of mold forming, make occupying device in operation is carried out using swager,Or the occupying device of commodity in use etc..
The content of the invention
The purpose of this utility model is the hip joint bone cement spacer mould for providing a kind of adjustable size, to solveCaused above-mentioned multinomial defect in the prior art.
A kind of hip joint bone cement spacer mould of adjustable size, including upper die component, lower mold assemblies and locking dressPut, symmetrical occupying device upper impression and occupying device lower impressions is respectively equipped with the upper die component and lower mold assemblies, it is describedOccupying device upper impression and occupying device lower impressions include femoral component and femoral bone cavitas medullaris part, the upper die component and lower modulePart surrounding is equipped with adjusting nut, and the femoral component and femoral bone cavitas medullaris part are formed around adjustable plate, the upper die componentBe equipped with fixing groove on lower mold assemblies, the locking device includes pulling force screw rod and fixing nut, and the pulling force screw rod is hingedIn in the fixing groove of lower mold assemblies.
Preferably, the femoral component and femoral bone cavitas medullaris part are made by POM materials.
Preferably, the femoral component is formed around three adjustable plates, and the femoral bone cavitas medullaris part both sides are provided with two altogetherIndividual adjustable plate, the adjusting nut position matches with adjustable plate.
Preferably, the upper die component and lower mold assemblies inner side are provided with the location hole and locating pin being mutually matched.
Preferably, it is equipped with spiral elasticity steel wire in the occupying device upper impression and occupying device lower impressions.
The beneficial effects of the utility model：This kind of hip joint bone cement spacer mould of adjustable size, by this kindStructure design, operating personnel can control to adjust plate to occupying device upper impression and account for by controlling to adjust the extruding depth of nutThe femoral component and the pressure of femoral bone cavitas medullaris part surrounding of position device lower impressions, and then so that under occupying device upper impression and occupying deviceThe size of die cavity is finely tuned, and then be sufficient filling with bone cement in occupying device upper impression and occupying device lower impressions by operating personnelIn, after elastic wire is embedded, merge upper die component and lower mold assemblies and ensure location hole and locating pin alignment position, then pass throughLocking device after locking causes that bone cement is fully molded for 5-10 minutes, opens the hip joint bone cement spacer mold-lockedLocking device, hip joint bone cement is taken out, and function is very useful, is worthy to be popularized, the femoral component and femur marrowChamber part is made by POM materials, and POM materials have good elastic property, can carry out squeezing for size interior in a big wayPressure regulation, and can well be separated with bone cement, the femoral component is formed around three adjustable plates, the femoral bone cavitas medullarisPart both sides are provided with two adjustable plates altogether, and the adjusting nut position matches with adjustable plate, by adjusting nut to adjustable plateSqueezing action realizes the regulation of the size of femoral component and femoral bone cavitas medullaris part, and the upper die component and lower mold assemblies inner side setThere are the location hole and locating pin being mutually matched, upper die component and lower mold assemblies can be effectively ensured that by location hole and locating pinFixed position and stability maintenance, be equipped with spiral elasticity steel wire in the occupying device upper impression and occupying device lower impressions,The intensity of the hip joint that bone cement is fabricated to can effectively be strengthened by elastic wire, extend the service life of product.
Brief description of the drawings
Fig. 1 is a kind of upper die component of the hip joint bone cement spacer mould of adjustable size described in the utility modelPartial top view.
Fig. 2 is a kind of lower mold assemblies of the hip joint bone cement spacer mould of adjustable size described in the utility modelPartial top view.
Fig. 3 is a kind of front view of the hip joint bone cement spacer mould of adjustable size described in the utility model.
Wherein：1-upper die component, 2-lower mold assemblies, 3-occupying device upper impression, 4-occupying device lower impressions, 5-femurHead part, 6-femoral bone cavitas medullaris part, 7-adjusting nut, 8-adjustable plate, 9-fixing groove, 10-pulling force screw rod, 11-fixedNut, 12-location hole, 13-locating pin.
Specific embodiment
For technological means, creation characteristic, reached purpose and effect for realizing the utility model are easy to understand, belowWith reference to specific embodiment, the utility model is expanded on further.
As shown in Figure 1, Figure 2 and Figure 3, a kind of hip joint bone cement spacer mould of adjustable size, including upper moduleIt is respectively equipped with symmetrical occupying device in part 1, lower mold assemblies 2 and locking device, the upper die component 1 and lower mold assemblies 2Die cavity 3 and occupying device lower impressions 4, the occupying device upper impression 3 and occupying device lower impressions 4 include femoral component 5 and femurPulp cavity part 6, the upper die component 1 and the surrounding of lower mold assemblies 2 are equipped with adjusting nut 7, the femoral component 5 and femur marrowChamber part 6 is formed around adjustable plate 8, and fixing groove 9, the locking device bag are equipped with the upper die component 1 and lower mold assemblies 2Pulling force screw rod 10 and fixing nut 11 are included, the pulling force screw rod 10 is articulated with the fixing groove 9 of lower mold assemblies 2.This kind can adjustThe hip joint bone cement spacer mould of size, by this kind of structure design, operating personnel can be by controlling to adjust nut 7Depth is extruded to control to adjust femoral component 5 and femoral bone cavitas medullaris portion of the plate 8 to occupying device upper impression 3 and occupying device lower impressions 4The pressure of the surrounding of part 6, and then cause that the size of occupying device upper impression 3 and occupying device lower impressions 4 is finely tuned, then operating personnelBone cement is sufficient filling with occupying device upper impression 3 and occupying device lower impressions 4, after elastic wire is embedded, module in mergingPart 1 and lower mold assemblies 2 simultaneously ensure location hole and locating pin alignment position, then by locking device by the hip joint bone cement occupy-placeDevice mold-locked, after locking causes that bone cement is fully molded for 5-10 minutes, opens locking device, is by the taking-up of hip joint bone cementCan, function is very useful, is worthy to be popularized.
In the present embodiment, the femoral component 5 and femoral bone cavitas medullaris part 6 are made by POM materials, POM materials toolThere is good elastic property, in the interior squeeze adjustments for carrying out size in a big way, and can be separated well with bone cement,The femoral component 5 is formed around three adjustable plates 8, and the both sides of femoral bone cavitas medullaris part 6 are provided with two adjustable plates 8, institute altogetherState the position of adjusting nut 7 to be matched with adjustable plate 8, femoral component 5 is realized to the squeezing action of adjustable plate 8 by adjusting nut 7With the regulation of the size of femoral bone cavitas medullaris part 6, the upper die component 1 and the inner side of lower mold assemblies 2 are provided with the location hole being mutually matched12 and locating pin 13, the fixed bit of upper die component 1 and lower mold assemblies 2 can be effectively ensured that by location hole 12 and locating pin 13Put and stability maintenance, spiral elasticity steel wire is equipped with the occupying device upper impression 3 and occupying device lower impressions 4, by bulletProperty steel wire can effectively strengthen the intensity of the hip joint that bone cement is fabricated to, extend the service life of product.
Based on above-mentioned, the utility model can control to adjust plate to occupying device by controlling to adjust the extruding depth of nutThe pressure of the femoral component and femoral bone cavitas medullaris part surrounding of upper impression and occupying device lower impressions, and then cause occupying device upper impressionSize with occupying device lower impressions is finely tuned, it is adaptable to different patients, saves hospital costs, and function is very useful, is worthPromote.
As known by the technical knowledge, the utility model can be by other essence without departing from its spirit or the reality of essential featureScheme is applied to realize.Therefore, embodiment disclosed above, for each side, is all merely illustrative, and is not only's.It is all in the range of the utility model or in the change being equal in the range of the utility model by the utility model bagContain.