CN2119205U

CN2119205U - Adjustable continuous prolongation apparatus for extremities

Info

Publication number: CN2119205U
Application number: CN 92200665
Authority: CN
Inventors: 阎敬军; 肖光; 张国栋
Original assignee: CHINESE PLA 208TH HOSPITAL
Current assignee: CHINESE PLA 208TH HOSPITAL
Priority date: 1992-01-06
Filing date: 1992-01-06
Publication date: 1992-10-21

Abstract

The utility model relates to an adjustable continuous lengthener for limbs, which is composed of a lengthening device, an elastic device, a monitoring device and an accessory, wherein the lengthening device and the elastic device are connected by a connecting shaft; the accessory is composed of an arc-shaped sidewall and a hook; the lengthening device, the elastic device and limb bones are connected by a steinman pin and are accurately adjusted and controlled by a dial indicator in right time. The lengthener has the characteristics of bones prolongation and short time of bone healing, accurate prolongation effect, convenient operation, etc. The utility model is suitable for repositioning and fixing the fractured bones without ankylosis and pain.

Description

Adjustable continuous prolongation apparatus for extremities

This utility model belongs to medical apparatus and instruments.

Traditional limb lengthening device is divided into monoplane and many planes two big classes.The monoplane extender is simple in structure, and is easy to use, in light weight, but stability is not ideal enough, and extender moves along needle track easily and increases the possibility of infection.Many planes extender adopts ring structure more, good stability, but complex structure, and by its pin folder requirement, locking pin must intersect at skeleton on same horizontal plane, so the difficulty of threading a needle is bigger.More than two kinds of extenders on extension system, all adopt and be interrupted the prolongation method, in 24 hours, repeatedly turn screw rod, retract soft tissue, reach the purpose that prolongs skeleton.

In view of the deficiency of above-mentioned technology, the purpose of this utility model is: become to be interrupted being extended for continuous prolongation on extension system, the potential energy that is stored in the spring was evenly discharged in 24 hours, slowly retract soft tissue and reach the purpose of continuous prolongation limbs.In the prolongation process, elastic force action is amplified by dial gauge, and accuracy controlling in good time, in the needle set fixture, needle set can be many crossing on the same levels to be fixed, and the plane angle of cut is between 45 °-90 °.

The purpose of this utility model is to realize like this.The continuous extender of adjustable limbs is by extension fixture, elastic device, monitoring device and adnexa four parts are formed, extension fixture is made up of rotatable prolongation screw rod and prolongation sleeve pipe, prolong every 1 week of rotation of screw rod, prolong 1 millimeter of sleeve pipe translation, on the prolongation screw rod, be equipped with two, be used to lock extension fixture apart from lock screw.Elastic device is by spring-backed quill, and spring and pressurization screw rod constitute, and spring places in the spring-backed quill, and the elastic force scope is at 0-35Kg.One end of spring-backed quill screws in the pressurization screw rod, and there is pressure scale the side of screw rod, increases spring force by inside screw-in pressurization screw rod.Extension fixture links to each other with elastic device by connecting axle, one end of continuous axle inserts in the spring-backed quill, the other end inserts to prolong in the screw rod and is fixed in the prolongation screw rod by the distance lock screw, the awl pad is housed in spring-backed quill, one end of awl pad heads on connecting axle, the other end links to each other with spring, can will prolong on 2 gears that dwell lock fix on 1 millimeter or 2 millimeters apart from lock screw.Monitoring device is by dial gauge, and fixed mount, baffle plate constitute, and dial gauge is installed on the dial gauge fixed mount on the two-side elastic sleeve pipe, and contravention withstands on the dial gauge baffle plate that prolongs on the screw rod, shows and amplifies the slight change that prolongs the gap, and amplification is 100.Accessories section comprises arc side arm and hook composition, the arc side arm is arbitrarily fixing on prolongation sleeve pipe and spring-backed quill, the fixedly hook of steinman pin is arranged on the arc side arm, prolonging the deep line epimere and the hypomere of bone during use, penetrate four pieces of steinman pins respectively, determine each pin spacing as required, the maximum angle of cut of two pins can reach 90 °, each pin end is separately fixed on the hook of arc side arm, the arc side arm is fixed, after beginning to prolong, suitably screwing in the pressurization screw rod makes spring force prolong increase with skeleton, progressively evenly recover to prolong the gap by spring force, in the prolongation process, observe the reading on the dial gauge, and timely adjustment pressurization screw rod evenly discharged elastic force in 24 hours.

Below in conjunction with description of drawings embodiment of the present utility model:

Fig. 1 is a general assembly drawing of the present utility model;

Fig. 2 is the accessories section general assembly drawing.

In Fig. 1: arc side arm (1), hook (2), hook holding screw (3), prolong sleeve pipe (4), steinman pin (5) prolongs screw rod (6), apart from lock screw (7), dial gauge baffle plate (8), dial gauge fixed mount (9), dial gauge (10), connecting axle (11), tapered pad (12), spring (13), spring-backed quill (14), pressurization screw rod (15)

In Fig. 2: steinman pin (5), holding screw (16).

Arc side arm (1) is fixed in by holding screw (16) and prolongs on the sleeve pipe (4), hook (2) will link up with (2) by hook holding screw (3) and be fixed on that arc side arm (1) is gone up and steinman pin (5) is fixing, prolong screw rod (6) screw-in in prolongation sleeve pipe (4).On prolongation screw rod (4), have fixing hole, dial gauge baffle plate (8) and connecting axle (11) are by fixing dial gauge baffle plate and connecting axle apart from lock screw (7), pressurization screw rod (15) screws in spring-backed quill (14), and two tapered pads (12) link to each other with pressurization screw rod (15) with connecting axle (11) respectively and spring (13) is fixed in the spring-backed quill (14).

Claims

1, a kind of extension fixture, elastic device, the continuous extender of adjustable limbs that monitoring device and adnexa constituted is characterized in that:

A. extension fixture is by rotatable prolongation screw rod (6) with prolong sleeve pipe (4) and forms, and has two lock holes use apart from lock screw (7) and fix dial gauge baffle plate (8) and fixed connection shaft (11) on prolongation screw rod (6);

B. elastic device is by spring-backed quill (14), spring (13) and pressurization screw rod (15) are formed, connecting axle (11) and two tapered pads (12) are housed in the spring-backed quill (14), tapered pad (12) is used for support spring (13), and pressurization screw rod (15) screws in the spring-backed quill (14) and in the side of pressurization screw rod (15) and is carved with pressure scale;

C. monitoring device is by dial gauge (10), and fixed mount (9), baffle plate (8) constitute, and dial gauge (10) is installed on the dial gauge fixed mount (9) on the two-side elastic sleeve pipe (14), and contravention withstands on the dial gauge baffle plate (8) that prolongs on the screw rod (6).

D. adnexa is to be made of arc side arm (1) and hook 2, and arc side arm (1) is gone up the fixedly hook (2) of steinman pin (5), and can go up fixing at prolongation sleeve pipe (4) and spring-backed quill (14).