CN203074846U - Distal radius fracture fixing part having angle correction structure - Google Patents
Distal radius fracture fixing part having angle correction structure Download PDFInfo
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- CN203074846U CN203074846U CN 201320057617 CN201320057617U CN203074846U CN 203074846 U CN203074846 U CN 203074846U CN 201320057617 CN201320057617 CN 201320057617 CN 201320057617 U CN201320057617 U CN 201320057617U CN 203074846 U CN203074846 U CN 203074846U
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- blade plate
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Abstract
The utility model provides a distal radius fracture fixing part having an angle correction structure, relates to a device curing bones or joints, and particularly relates to a distal radius fracture fixing part used for assisting in correction when an inner fixer is implanted. The distal radius fracture fixing part comprises a bone fracture plate and a plurality of locking screws. The distal radius fracture fixing part has the angle correction structure, the bone fracture plate serves as a lever, a fulcrum nail installed at the far end of the rod portion of the bone fracture plate serves as the fulcrum, a supporting element is installed at the near end of the rod portion of the bone fracture plate, the angle of the bone fracture plate is regulated, the head of the bone fracture plate is attached to a fixed fracture piece, and the locking screw located at the head of the bone fracture plate is far away from the joint cartilage surface of the far end of a radius. By means of the fact that the supporting height of the supporting element is regulated in the process of implantation of the bone fracture plate, the locking screw at the far end can be effectively prevented from penetrating through the joint cartilage surface and entering the joint cavity, and the risk of fixation invalidation is reduced. The palmar tilt angle can be accurately recovered through the angle correction structure, so that operative time can be shortened, and angle stability is provided for fracture.
Description
Technical field
This utility model relates to the device for the treatment of bone or joint, relates in particular to a kind of auxiliary gauged radius far-end fracture fixture with angle correct structure when being used to implant inner fixer.
Background technology
Radius far-end fracture is one of modal fracture, accounts for 1/6 of whole body fracture.Because radius far-end fracture relates to metaphysis and articular surface is pulverized, local stability is poor, complication such as the normal residual articular surface out-of-flatness of expectant treatment, radius cripetura, wrist deformity, traumatic arthritis and intractable wrist pain.At present, the following internal fixation method of normal clinically employing, but all exist not enough: there are complication such as tendon wearing and tearing, fracture, Lister eminectomy in 1, dorsal part steel plate; 2, palmar steel plate can not provide the stress lateral brace for the dorsal part instability, and solid failure easily takes place; 3, the palm, dorsal part double steel plate internal fixation can reach strong fixing reliably, but operation wound is big, and the possibility of damage tendon is arranged in the operation.And because of the far-end sclerotin is pulverized, difficulty is recovered at palm inclination angle or reset after can not get effectively supporting and usually cause the internal fixation failure.
The Chinese invention patent that enters China through PCT application " is used for stablizing the plate of distal radial fractures " (Chinese invention patent number: ZL 200480037519.1 Granted publications number: CN 100506180C) disclose a kind of plate that is used for stablizing distal radial fractures, comprise an elongated stem and be connected above it by the preformed far-end plate of anatomy, wherein, the envelope of plate has triangular shaped basically; Also comprise be arranged in the bar portion and the far-end plate in, the screwed hole that is threaded longitudinal axis of tapered structure on the far-end plate at least, each screw thread longitudinal axis mainly is to distribute in the far-end plate not parallelly, and, between bar portion and plate, form a bending, triangular shaped or the corresponding envelope of described plate is unequal-sided, wherein, that side of leg-of-mutton bar dorsad portion has many conical screw holes.The aperture of these conical screw holes is selected less than the diameter of the screw hole in the bar portion, and described in the plate permitted porous screw thread longitudinal axis and become one to be not equal to 90 ° angle with bar portion surface.
In existing palmar distal radius fixture, the deficiency that the palmar lockplate can avoid said apparatus to exist.The palmar lockplate is fixedly the time, the tight interlock of recessed screw thread on the convex thread of hold-down screw and the blade plate screw hole is lock-out state, forms firm angle and fixes, the sclerite of being worn by screw just is connected to each other together by the pegboard systems that forms one, reaches the purpose of fixing fracture.Like this; the palmar lockplate need not closely contact with cortical bone; the soft tissue that is connected on the osteocomma had both been protected in the space of Cun Zaiing effectively each other; reduced interference to the sclerite blood supply; create good condition for the healing of fracture, avoided traditional blade plate under the pre-bending condition of poor, to tighten the fracture end displacement that screw causes again.China's utility model patent " distal radius palmar locking bone fracture plate " (utility application number: ZL201020047006.1 Granted publication number: CN201759658U) disclose a kind of distal radius palmar locking bone fracture plate, it comprises head and body, has the bending of distal radius anatomical form between described head and the body; Described head is " recessed " shape, and head is wider than body; Described head evenly is placed with the thread lock hole.The distal radius steel plate of this utility model is locking-typed steel plate, has into angle stability, can avoid in the art once resetting losing to reset with secondary and lose.The locking mechanism of palmar lockplate can provide angle stability for fracture, can also improve the keep effect of blade plate to the fracture end position, and screw is to the grasping force of sclerite.
But, use the palmar lockplate, efficient recovery palm inclination angle should be arranged in the operation, again the far-end locking screw is fixed in the articular cartilage below, reaching effectively fixing, yet in practical operation, in that to squeeze into lock screw by no means easy.If existing palmar lockplate applying is placed on the radius, squeeze into lock screw then, lock screw is easy to break through articular cartilage face and enters articular cavity, causing the operation error, and repeatable operation then can cause fixing loosening, referring to Fig. 3.For avoiding this risk, at inclined to one side near-end drivescrew, this makes the hold of lock screw have a greatly reduced quality again to prior art usually.Therefore, there is following technical problem in existing palmar lockplate, and 1. the far-end locking screw is broken through articular cartilage face easily and entered articular cavity in the blade plate implantation process.2. recovering palm inclination angle in the blade plate implantation process is difficult for grasping.
The utility model content
The purpose of this utility model provides a kind of radius far-end fracture fixture with angle correct structure, can when implanting blade plate, utilize the angle correct structure accurately to recover to slap the inclination angle, and prevent that effectively the far-end locking screw from breaking through articular cartilage face easily and entering articular cavity.
This utility model solves the problems of the technologies described above the technical scheme that is adopted:
A kind of radius far-end fracture fixture with angle correct structure comprises blade plate and several lock screw; Described blade plate is made of head that connects as one and bar portion, and the head of blade plate is the transverse plate that meets the distal radius anatomical features, the bar portion of blade plate along distal radius to the radius proximal extension; At head, far-end and the near-end of described blade plate, be respectively equipped with the some screw holes that cooperate with lock screw; It is characterized in that:
Described radius far-end fracture fixture has the angle correct structure, described angle correct structure with described blade plate as lever, bar portion far-end at described blade plate is provided with the fulcrum nail as fulcrum, props up the pad element in the bar portion near-end setting of described blade plate, is used to regulate the blade plate angle;
A bed hedgehopping degree of described pad element, the sclerite that makes the head of blade plate fit and to be fixed, and make the lock screw that places the blade plate head articular cartilage face away from distal radius, thereby guarantee that in implanting the blade plate process, the lock screw that screws in screw hole can not break through articular cartilage face and enter articular cavity.
A kind of preferable technical scheme with radius far-end fracture fixture of angle correct structure of the present utility model is characterized in that described pad element is a grommet screw that matches with the screw hole of blade plate near-end, and the tip of a grommet screw is an arc surface; Described grommet screw screws in the screw hole of blade plate near-end; The tip of described grommet screw is supported on the radius near-end, and blade plate and radius near-end are formed and the corresponding correction angle in palm inclination angle that needs to recover.
A kind of better technical scheme with radius far-end fracture fixture of angle correct structure of the present utility model is characterized in that described pad element be made up of grommet screw and shallow cambered surface pad; Described grommet screw matches with the screw hole of blade plate near-end; Described shallow cambered surface pad pad is between the tip and radius near-end of a grommet screw.
The beneficial effects of the utility model are:
1, the radius far-end fracture fixture with angle correct structure of the present utility model, by in implanting the blade plate process, regulating a bed hedgehopping degree of pad element, can prevent effectively that far-end locking screw breakthrough articular cartilage face from entering articular cavity, thereby reduce the risk of solid failure.
2, the radius far-end fracture anchor structure with angle correct structure of the present utility model is simple, it is easy to implant the blade plate operation technique, when implanting blade plate, can utilize lever principle, accurately recover to slap the inclination angle by the angle correct structure, thereby can shorten operating time, and provide angle stability for fracture.
Description of drawings
Fig. 1 is the structural representation with radius far-end fracture fixture of angle correct structure of the present utility model;
Fig. 2 forms a structural representation of pad element by a grommet screw and shallow cambered surface pad;
Fig. 3 is that the far-end locking screw of existing blade plate is broken through the sketch map that articular cartilage face enters articular cavity;
Fig. 4 is that fracture fixation part of the present utility model makes the sketch map of far-end locking screw away from the distal radius articular cartilage face;
Fig. 5 is that fracture fixation part of the present utility model utilizes blade plate, fulcrum nail and a grommet screw to form the sketch map of lever;
Fig. 6 is that the radius far-end fracture fixture with angle correct structure of the present utility model recovers the sketch map at palm inclination angle.
Among the figure, the 10-blade plate, the screw hole of 11-head, the screw hole of 12-far-end, the screw hole of 13-near-end, the 20-lock screw, 30-fulcrum nail, 40-props up the pad element, and 41-props up grommet screw, the shallow cambered surface pad of 42-, 50-radius, 51 sclerites.
The specific embodiment
In order to understand technique scheme of the present utility model better, describe in detail further below in conjunction with drawings and Examples.
An embodiment of the radius far-end fracture fixture with angle correct structure of the present utility model as shown in Figure 1, comprise blade plate 10 and several lock screw 20, blade plate 10 is made of head that connects as one and bar portion, the head of blade plate 10 is the transverse plate that meets the distal radius anatomical features, the bar portion of blade plate 10 along distal radius to the radius proximal extension; At head, far-end and the near-end of blade plate 10, be respectively equipped with the some screw holes 11,12 and 13 that cooperate with lock screw 20.Radius far-end fracture fixture of the present utility model has the angle correct structure, described angle correct structure utilizes lever principle to recover palm inclination angle, the angle correct structure with blade plate 10 as lever, bar portion far-end at blade plate 10 is provided with fulcrum nail 30 as fulcrum, prop up pad element 40, the palm tilt adjustment blade plate angle that is used for recovering as required in the bar portion near-end setting of blade plate 10; Referring to Fig. 4 and Fig. 5.
Prop up a bed hedgehopping degree of pad element 40, the sclerite 51 that makes the head of blade plate fit and to be fixed, and make the lock screw 20 that places the blade plate head articular cartilage face away from distal radius, thereby guarantee in implanting the blade plate process, the lock screw 20 that screws in the screw hole 11 of head can not break through articular cartilage face and enter articular cavity, referring to Fig. 4.
According to the embodiment with radius far-end fracture fixture of angle correct structure of the present utility model shown in Figure 1, a pad element 40 is the grommet screws 41 that match with the screw hole 13 of blade plate 10 near-ends, and the tip 43 of a grommet screw 41 is an arc surface; Grommet screw 41 screws in the screw hole 13 of blade plate near-ends, and the tip 43 of a grommet screw 41 is supported on the near-end of radius 50, the corresponding correction angle in palm inclination angle that makes the blade plate 10 and the near-end of radius 50 form and need recovery.Then when firmly pressing down blade plate 10 near-ends, withdraw from simultaneously a grommet screw 41 gradually and slowly screw in fulcrum nail 30, make the far-end of blade plate 10 be close to the cadre of radius, progressively reduce described correction angle, by blade plate 10, as fulcrum, prize the sclerite 51 that is connected blade plate 10 head part with fulcrum nail 30, utilize leverage to recover palm inclination angle.
According to another embodiment with radius far-end fracture fixture of angle correct structure of the present utility model, a pad element 40 is made up of a grommet screw 41 and shallow cambered surface pad 43; Propping up grommet screw 41 matches with the screw hole 13 of blade plate 10 near-ends; Shallow cambered surface pad 43 pads are between the near-end of tip of propping up grommet screw 41 and radius 50, as shown in Figure 2.Adopt a pad element 40 of this structure, can alleviate the pressure of the tip of a grommet screw 41 radius near-end periosteum; After the palm inclination angle of recovering radius, a grommet screw 41 withdraws from from the screw hole 13 of blade plate 10 near-ends, takes out shallow cambered surface pad 43 simultaneously from the side of blade plate 10, and the lock screw of using suitable length again instead is with blade plate 10 and the locking of radius near-end.In the embodiment shown in Figure 2, the diameter of shallow cambered surface pad 43 is greater than the width of blade plate 10, and the edge of shallow cambered surface pad 43 stretches out the side of blade plate 10, with the shallow cambered surface pad 43 of convenient taking-up.The diameter of bigger shallow cambered surface pad 43 more helps alleviating the pressure of the tip of a grommet screw 41 to radius near-end periosteum, and therefore, this embodiment is specially adapted to dispose the blade plate of small-bore screw hole.
Radius far-end fracture fixture with angle correct structure of the present utility model, a fulcrum nail 30 that its angle correct structure relates to and a pad element 40 only are used for the angle correct of blade plate 10 implantation process, after implant surgery is finished, fulcrum need be followed closely 30 and a pad element 40 from blade plate 10 corresponding screw holes, withdraw from, the lock screw of changing suitable length realizes the locking of blade plate 10 and radius.Therefore, a fulcrum nail 30 and a grommet screw 41 need not possess the function with the screw hole locking, and the length of a fulcrum nail 30 and a grommet screw 41 is not subjected to the restriction of lock screw length, goes for the blade plate 10 of different size.
Operation method for implantation with radius far-end fracture fixture of angle correct structure of the present utility model may further comprise the steps:
1, after general anesthesia or the brachial plexus anesthesial, peeling operation appears the radius far-end fracture broken ends of fractured bone.
2, behind the reduction by traction, choose the blade plate 10 of suitable length, make the head of blade plate 10 be close to distal radius articular surface edge.
3, in the screw hole 12 of blade plate 10 bar portion distal-most end, be screwed into fulcrum nail 30, but do not tighten, simultaneously, in the screw hole 13 of blade plate 10 bar portion most proximal end, be screwed into a grommet screw 41.The tip 42 of propping up grommet screw 41 is that circle is blunt, does not screw in the radius near-end, only plays an effect of pad blade plate 10.At this moment, blade plate 10 near-ends are lifted by a grommet screw 41, and the height that lifts optionally recovers to slap the inclination angle and decides, referring to Fig. 4 and Fig. 5.
5, behind the rectification chi drift angle, in each screw hole 11 of blade plate 10 heads, go into lock screw 20, bone fixation tabs 51.Then when firmly pressing down blade plate 10 near-ends, slowly withdraw from a grommet screw 41, make the far-end of blade plate 10 be close to the cadre of radius, utilize the leverage palm inclination angle that resets, referring to Fig. 6.
6, according to fixing needs, be screwed into remaining lock screw 20 successively, and according to actual measurement nail hole depth, with fulcrum nail 30 with prop up the lock screw that grommet screw 41 is replaced by suitable length.
Like this, the sclerite that locked screw is worn just is connected to each other together by the pegboard systems that forms one, forms firm angle and fixes, and reaches the purpose of fixing fracture.
Those of ordinary skill in the art will be appreciated that; above embodiment is used for illustrating the technical solution of the utility model; and be not to be used as qualification of the present utility model; any based on connotation of the present utility model to variation, modification that the above embodiment did, all will drop in the protection domain of claim of the present utility model.
Claims (3)
1. the radius far-end fracture fixture with angle correct structure comprises blade plate and several lock screw; Described blade plate is made of head that connects as one and bar portion, and the head of blade plate is the transverse plate that meets the distal radius anatomical features, the bar portion of blade plate along distal radius to the radius proximal extension; At head, far-end and the near-end of described blade plate, be respectively equipped with the some screw holes that cooperate with lock screw; It is characterized in that:
Described radius far-end fracture fixture has the angle correct structure, described angle correct structure with described blade plate as lever, bar portion far-end at described blade plate is provided with the fulcrum nail as fulcrum, props up the pad element in the bar portion near-end setting of described blade plate, is used to regulate the blade plate angle;
A bed hedgehopping degree of described pad element, the sclerite that makes the head of blade plate fit and to be fixed, and make the lock screw that places the blade plate head articular cartilage face away from distal radius, thereby guarantee that in implanting the blade plate process, the lock screw that screws in screw hole can not break through articular cartilage face and enter articular cavity.
2. the radius far-end fracture fixture with angle correct structure according to claim 1 is characterized in that described pad element is a grommet screw that matches with the screw hole of blade plate near-end, and the tip of a grommet screw is an arc surface; Described grommet screw screws in the screw hole of blade plate near-end; The tip of described grommet screw is supported on the radius near-end, and blade plate and radius near-end are formed and the corresponding correction angle in palm inclination angle that needs to recover.
3. the radius far-end fracture fixture with angle correct structure according to claim 1 is characterized in that described pad element be made up of grommet screw and shallow cambered surface pad; Described grommet screw matches with the screw hole of blade plate near-end; Described shallow cambered surface pad pad is between the tip and radius near-end of a grommet screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320057617 CN203074846U (en) | 2013-02-01 | 2013-02-01 | Distal radius fracture fixing part having angle correction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320057617 CN203074846U (en) | 2013-02-01 | 2013-02-01 | Distal radius fracture fixing part having angle correction structure |
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| Publication Number | Publication Date |
|---|---|
| CN203074846U true CN203074846U (en) | 2013-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320057617 Expired - Fee Related CN203074846U (en) | 2013-02-01 | 2013-02-01 | Distal radius fracture fixing part having angle correction structure |
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| CN (1) | CN203074846U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103054641A (en) * | 2013-02-01 | 2013-04-24 | 上海市嘉定区南翔医院 | Distal radius fracture fastener with angle correcting structure |
| CN117224290A (en) * | 2023-11-16 | 2023-12-15 | 北京贝思达生物技术有限公司 | Radius small head joint rebuilding and repairing system |
-
2013
- 2013-02-01 CN CN 201320057617 patent/CN203074846U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103054641A (en) * | 2013-02-01 | 2013-04-24 | 上海市嘉定区南翔医院 | Distal radius fracture fastener with angle correcting structure |
| CN117224290A (en) * | 2023-11-16 | 2023-12-15 | 北京贝思达生物技术有限公司 | Radius small head joint rebuilding and repairing system |
| CN117224290B (en) * | 2023-11-16 | 2024-02-02 | 北京贝思达生物技术有限公司 | Radius small head joint rebuilding and repairing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130724 Termination date: 20180201 |