CN2070163U - Double worm rod reposition fixer for fracture - Google Patents

Abstract

The utility model relates to a fracture resetting apparatus, comprising two fracture fixing apparatus. The utility model has the essential technique that the two fixing apparatus are respectively arranged in the center holes of two connectors; the front end of one of the connector is provided with a joint for connecting a ball fossa, and the rear end is provided with a nut for tightly adjusting the connector; the structure of the other connector is right opposite to the previous connector; the interior of the nut for tightly adjusting the connector is provided with a screw. The fixing apparatus are formed through two sliding plates which are correspondingly slide; the upper end of the sliding plates are provided with the folding ends of the fixing apparatus, and the lower ends of the sliding plates are provided with the screws through which the sliding plates are driven to correspondingly slide.

Description

Double worm rod reposition fixer for fracture

This utility model belongs to a kind of operating theater instruments, specifically a kind of reduction of the fracture apparatus.

The fracture reduction fixator that uses is to utilize two threaded asseous pins to wear the nearly far-end of severed limb at present, one cover bracing frame is fixed in the severed limb when resetting, be installed in the positor fixed bone spicule on the bracing frame, and having a cover regulating mechanism can adjust the advance and retreat and the rotation displacement of spicule, its upper support bar can be adjusted two pin relative distances.Outside this kind reduction fixture device deficiency: 1, the nearly far-end of fracture is worn two asseous pins earlier, wastes time and energy than not threading a needle.2, only be used for steel plate fixedly intramedullary needle have any problem.3, asseous pin diameter 4-5mm is a single armed load, measures through mechanics, and the too thin shearing resistance of pin is poor, can be crooked, but can not cut off.Want not bend, must reduce the distance of guide pin and fixed mount or increase the diameter of asseous pin.The conclusion of yield limit and safety coefficient: bone must not surpass 1.13cm to support bracket fastened distance, otherwise plastic deformation can take place, so amount of deflection is measured big 1cm.4, structure is complicated and waste time and energy.

The purpose of this utility model is for overcoming above-mentioned deficiency, and utilizes principle design a kind of simple in structure, easy to operate of jack, the fracture reduction fixture device of being convenient to fracture.

This utility model is achieved in that it is to be made of two single screw rod fracture fixing apparatuss, its technical essential is: constitute two single screw rod fracture fixing apparatuss and be installed in respectively in two adapter mesopores, one of them adapter is that front end is processed with a connection ball-and-socket joint, the rear end is processed with one and tightens the adapter nut, the front end of another adapter is processed with one and tightens the adapter nut, and the rear end is processed with an adapter ball-and-socket joint.Tightening of two adapters the screw rod of being with screw handle is housed respectively in the adapter nut.Screw handle is the advance and retreat that are used for adjusting screw rod.Two holders all are to be made of two relative slide plates, and the upper end of slide plate is processed with the holder fracture end, and the holder fracture end of two slide plate upper ends is to be used for the clamping knochenbruch.The lower end of relative fixed slide plate is processed with a screwed hole, a screw rod that promotes relative sliding skateboard is installed in this screwed hole, the outer end of this screw rod is equipped with a fixed handle, regulate the advance and retreat that promote relative sliding skateboard screw rod through this fixed handle, so just constituted this twin screw fracture reduction fixator, its use principle is: two holder fracture ends of two single screw rod fracture fixing apparatuss clamp the both ends of the bone of two fractures respectively, make and be installed in two screw front ends on the adapter and withstand on respectively in the adapter ball-and-socket joint on the other side's adapter, regulate two screw rods on the adapter simultaneously, fracture site is drawn back in mutual promotion through two screw rods, carrying out shaping then resets, after shaping resets this twin screw fracture reposition instrument is taken off, just finished whole reseting procedure.

Because this utility model has adopted the principle of screw jack, fracture is drawn back resetted, pull strength is big, reliably and not peels off periosteum, and safety, convenient is mainly used in the Fracture of femur operation.

Fig. 1 is a structure principle chart of the present utility model.

Below in conjunction with accompanying drawing this utility model is described in detail: holder (1), (15) are installed in respectively in adapter (4), (17) mesopore (7), (20), adapter is made of symmetric two halves, adapter (4), (17) can be formed by fixedly connecting by screw (10), (19) respectively, also can be that an end is hinged, the other end be fixing by screw (10).The front and back of adapter (4) process one respectively and connect ball-and-socket joint (5) and one and tighten adapter nut (6), tighten the screw rod (9) that an outer end band screw handle (8) is installed in the adapter nut (6).The front and back of adapter (17) are processed with one respectively and tighten attaching nut (16) and be connected ball-and-socket joint (18) with one, and the screw rod (14) of an outer end band screw handle (13) is installed in tightening attaching nut (16).The front end of screw rod (9), (14) preferably is processed into sphere, so as be connected ball-and-socket joint and contact.Holder (1), (15) all are to be made of two slide plates that can slide relatively.The upper end of holder (1) is processed with holder fracture end (3), and screwed hole of processing on its lower end relative fixed plate is installed a screw rod (2) that promotes relative sliding skateboard in this screwed hole.The upper end of holder (15) is processed with holder fracture end (11), is processed with a screwed hole on its lower end relative fixed slide plate, and a screw rod (12) that promotes relative sliding skateboard is installed in this screwed hole.The outer end of screw rod (2), (12) all is fixed with regulating handle, so that the advance and retreat of screw rod (2), (12) are regulated.

Claims (1)

1, the twin screw fracture reduction fixator, constitute by two single screw rod fracture fixing apparatuss, it is characterized in that: constitute two single screw rod fracture fixing apparatuss (1), (15) be installed in adapter (4) respectively, (17) mesopore (7), (20) in, the front and back of adapter (4) are processed with one respectively and connect ball-and-socket joint (5) and one and tighten attaching nut (6), tighten the screw rod (9) that a band screw handle (8) is installed in the attaching nut, the front and back of adapter (17) are processed with one respectively and tighten an adapter nut (16) and an adapter ball-and-socket joint (18), tighten the screw rod (14) that a band screw handle (13) is installed in the adapter nut (16), holder (1), (15) all be to constitute by two slide plates that slide relatively, the upper end of holder (1) is processed with holder fracture end (3), be processed with a screwed hole on the relatively-stationary slide plate of its lower end, a screw rod (2) that promotes relative sliding skateboard is installed in this screwed hole, the upper end of holder (15) is processed with holder fracture end (11), be processed with a screwed hole on the relatively-stationary slide plate of its lower end, a screw rod (12) that promotes relative sliding skateboard is installed in this screwed hole.