CN205268259U - Metacarpal -phalangeal complicated fracture external fixation frame - Google Patents

Abstract

The utility model relates to a metacarpal -phalangeal complicated fracture external fixation frame belongs to the medical instrument field, and this external fixation mainly is applicable to the complicated metacarpal -phalangeal fracture due to the various traumatisms, is particularly useful for with the bony defect and need carry out the complicated metacarpal -phalangeal fracture of bone extension. It comprises epiphysis fixed column, extension arm, key fixed column, rotatory threaded rod, a plurality of ke shi needle fixers. The utility model discloses possesses following advantage: 1, diversified, many angle fixed are realized through the rotation between key fixed column and the epiphysis fixed column and the rotation of ke shi needle fixer in the fixed column side opening, metacarpal -phalangeal fracture complexity, diversified needs can be satisfied, 2, main fixed with using the ke shi needle, it is convenient to select suitable material, little to soft tissue lesion, 3, have bone extension and fracture end pressurization function, 4, the postoperative can carry out joint function exercise in early days, promotes joint functional recovery.

Description

A kind of metacarpal-phalangeal complicated fracture external fixing rack

Technical field

A kind of metacarpal-phalangeal complicated fracture external fixing rack of the utility model belongs to medical instruments field, and this extenal fixation is mainly applicable to the complicated fracture of metacarpal bone and phalanges of fingers caused by various wound, is particularly useful for bony defect and needs the complicated fracture of metacarpal bone and phalanges of fingers carrying out Limb lengthening.

Background technology

Along with the development of industrial level, promoting the patient that simultaneously result also in a large amount of hand wound of social progress, therefore fracture of metacarpal bone and phalanges of fingers is the most common sick kind that we brothers surgeon runs into, especially for the open comminuted fracture of metacarpal-phalangeal often because bony defect, the tiny clinical treatment of osteocomma are comparatively thorny. And at present this type of patient is treated often by local bone grafting+kirschner pin mode that simply fixing+gypsum is fixed for a long time, because early functional exercise can not be carried out, often cause ankylosis, finally cause limitation of activity. Since extenal fixation and Limb lengthening technology are come out, the treatment of exterior fixing rack in four limbs wound, Limb lengthening obtains more and more application, the development of exterior fixing rack is also advanced by leaps and bounds, but it is applicable to fracture of metacarpal bone and phalanges of fingers, especially Phalangeal fracture, refer to bone shorten deformity exterior fixing rack relatively less, and many volumes are relatively big, fixed-direction is single, can not meet the needs of fracture of metacarpal bone and phalanges of fingers diversity, complicacy.

Practical novel content

The purpose of this utility model is to avoid the deficiencies in the prior art, thus provides a kind of external fixing rack being used for the treatment of metacarpal-phalangeal complicated fracture.

The purpose of this utility model is achieved by following measure, a kind of metacarpal-phalangeal complicated fracture external fixing rack is by the fixing post of bone end, extension arm, key fixing post, rotating threaded rod, some Kirschner wire fixation device compositions, the quantity of the fixing post of described bone end is 2, described extension arm is divided into nearly side extension arm and distally extension arm, the fixing post of one bone end and nearly side extension arm are integrated T-type structure, the fixing post of another bone end and distally extension arm are similarly one T-type structure, nearly side extension arm is connected by rotating threaded rod with distally extension arm, described rotating threaded rod is without thread structure near one end of side extension arm, rotating threaded rod is processed with helicitic texture by one end of distally extension arm, the quantity of the fixing post of described backbone is 1-4 (selecting the fixing quantity of required key fixing post according to the needs of fracture situation), and press screw to be fixed on the end Angle Position of the fixing post of bone end by card, key fixing post rotates by loosening screw, thus realize multi-angle and fix, the fixing post of bone end and the fixing post of backbone are rectangular parallelepiped, its side is all processed with circular hole, Kirschner wire fixation device passes and fixation Kel's needle in this circular hole.

The diameter of described kirschner pin is 1.0mm or 1.2mm, is connected to the fixing post of bone end and the fixing post of backbone by Kirschner wire fixation device.

The utility model can be used for metacarpal-phalangeal total length fracture, i.e. two ends and the middle situation all having fracture, when key middle fracture is serious.

When damaging lighter for two ends, namely fracture two ends have enough length parallel can squeeze into 2 pieces of kirschner pins, we can provide the relatively easy exterior fixing rack of one to be fixed, it realizes object by following measure, a kind of Facile fixative bracket is made up of the fixing post of backbone, extension arm, rotating threaded rod, the fixing post of described backbone and extension arm are formed in one structure, and it is 2 that described backbone fixes the quantity of post and extension arm, and is connected to the two ends of rotating threaded rod.

The utility model possesses following advantage: 1, by the rotation between key fixing post and the fixing post of bone end, realize multi-faceted, multi-angle with the rotation of Kirschner wire fixation device in fixing post side opening to fix, the needs of fracture of metacarpal bone and phalanges of fingers complicacy, diversity can be met; 2, primary application Kirschner wire fixation, selection is convenient, and soft tissue injury is little; 3, there is Limb lengthening and fracture end pressurization function; 4, exercise of joint function can be carried out after art in early days, promote joint function recovery.

Accompanying drawing explanation

Accompanying drawing 1 is structural representation of the present utility model.

Accompanying drawing 2 is the side schematic view of the fixing post of bone end of the present utility model.

Accompanying drawing 3 is the end side schematic diagram of the fixing post of bone end of the present utility model.

Accompanying drawing 4 is the utility model Kirschner wire fixation device structural representation.

Accompanying drawing 5 is another kind of structural representation of the present utility model.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further described.

In figure: bone end fixes post 1, key fixing post 2, nearly side extension arm 3, distally extension arm 4, rotating threaded rod 5, card pressure screw 6, Kirschner wire fixation device 7, set screw nut 8, extension arm 9.

As shown in accompanying drawing 1-accompanying drawing 4, a kind of metacarpal-phalangeal complicated fracture exterior fixing rack of the utility model is by the fixing post 1 of bone end, extension arm, key fixing post 2, rotating threaded rod 5, some Kirschner wire fixation devices 7 form, the quantity of the fixing post 1 of described bone end is 2, described extension arm is divided into nearly side extension arm 3 and distally extension arm 4, the fixing post 1 of one bone end is integrated T-type structure with nearly side extension arm 3, the fixing post 1 of another bone end is similarly one T-type structure with distally extension arm 4, nearly side extension arm 3 is connected by rotating threaded rod 5 with distally extension arm 4, described rotating threaded rod 5 is without thread structure near one end of side extension arm 3, rotating threaded rod 5 is processed with helicitic texture by one end of distally extension arm 4, the quantity of the fixing post 2 of described backbone is 1-4 (selecting the fixing quantity of required key fixing post according to the needs of fracture situation), and press screw 6 to be fixed on end Angle Position (that is: the key fixing post fixing outermost circular hole of post of insertion bone end of the fixing post 1 of bone end by card, the circular hole (shown in Fig. 3) that card pressure screw 6 is screwed into the fixing post end side of bone end carry out card press solidly fixed), key fixing post 2 rotates by loosening screw, thus realize multi-angle and fix, the fixing post 1 of bone end and the fixing post 2 of backbone are rectangular shape, there is circular hole side, Kirschner wire fixation device 7 passes and fixation Kel's needle in this circular hole, application diameter 1.0mm or 1.2mm Kirschner wire fixation, and the fixing post of bone end and the fixing post of backbone (shown in Fig. 4) it is connected to by Kirschner wire fixation device, because can smooth rotating between threaded rod and near-end extension arm after fixing, screw thread rotation is passed through between threaded rod and far-end extension arm, can by the threaded rod on rotation near-end extension arm, rely on the screw thread impellent between threaded rod and far-end extension arm that the distance between the fixing post of both sides and extension arm is extended, carry out realizing the object of bone end prolongation. the fixing post of bone end is fixed on the sclerotin at metacarpal-phalangeal two ends, and key fixing post is used for the sclerotin of fixed backbone, therefore can realize the needs of complicated fracture in metacarpal-phalangeal length range.

As shown in Figure 5, when damaging lighter for two ends, namely fracture two ends have enough length parallel can squeeze into 2 pieces of kirschner pins, we can provide the relatively easy exterior fixing rack of one to be fixed, it realizes object by following measure, a kind of Facile fixative bracket is made up of the fixing post 2 of backbone, extension arm 9, rotating threaded rod 5, the fixing post 2 of described backbone and extension arm 9 are formed in one structure, the fixing post 2 of described backbone is 2 with the quantity of extension arm 9, and is connected to the two ends of rotating threaded rod 5.

Use example of the present utility model:

1, support is fixing:

The utility model is placed in the dorsal part of metacarpal-phalangeal, kirschner pin squeezes into the corresponding position of metacarpal bone bone by the circular hole below Kirschner wire fixation device through skin, Kirschner wire fixation device is worn from the lower section of rack body corresponding circle hole into, top hold-doun nut 8 is tightened, by the pressurization fixation Kel's needle of nut. After the reduction of the fracture, the size of direction according to fracture line and sclerite, position in fixation procedure, by the rotation between Kirschner wire fixation device and fixing post, and the rotation between the fixing post of bone end and the fixing post of backbone selects the proper angle of inserting needle; The fixing post of bone end and the fixing post of backbone need the screw tightened between two fixing posts after fixing complete one piece of kirschner pin respectively, the adjustment of other kirschner pin angles can only be adjusted by the rotation between Kirschner wire fixation device and fixing post.

2, Limb lengthening and the pressurization of bone end:

When fracturing, bony defect is more, reaches the object of Limb lengthening by rotating threaded rod. Rotate the threaded rod on extension arm after support is fixing, by the screw thread impellent between distally extension arm and threaded rod, the distance between extension arm is increased gradually, thus the gap driving fracture end is broadening, reach the object of Limb lengthening. When without the need to Limb lengthening, it is possible to reverse rotation threaded rod, reach the pressurization of bone end, promote the object of union of fracture.

Claims (3)

1. a metacarpal-phalangeal complicated fracture external fixing rack, it is characterized in that: by the fixing post of bone end, extension arm, key fixing post, rotating threaded rod, some Kirschner wire fixation device compositions, the quantity of the fixing post of described bone end is 2, described extension arm is divided into nearly side extension arm and distally extension arm, the fixing post of one bone end and nearly side extension arm are integrated T-type structure, the fixing post of another bone end and distally extension arm are similarly one T-type structure, nearly side extension arm is connected by rotating threaded rod with distally extension arm, described rotating threaded rod is without thread structure near one end of side extension arm, rotating threaded rod is processed with helicitic texture by one end of distally extension arm, the quantity of the fixing post of described backbone is 1-4, and press screw to be fixed on the end Angle Position of the fixing post of bone end by card, key fixing post rotates by loosening screw, thus realize multi-angle and fix, the fixing post of bone end and the fixing post of backbone are rectangular parallelepiped, its side is all processed with circular hole, Kirschner wire fixation device passes and fixation Kel's needle in this circular hole.

2. metacarpal-phalangeal complicated fracture external fixing rack according to claim 1, is characterized in that: the diameter of described kirschner pin is 1.0mm or 1.2mm, is connected to the fixing post of bone end and the fixing post of backbone by Kirschner wire fixation device.

3. a Facile fixative bracket, it is characterized in that: be made up of the fixing post of backbone, extension arm, rotating threaded rod, the fixing post of described backbone and extension arm are formed in one structure, and it is 2 that described backbone fixes the quantity of post and extension arm, and is connected to the two ends of rotating threaded rod.