CN102715940B - Double-side adjustable external fixed bracket for fracture - Google Patents

Abstract

The invention relates to a double-side adjustable external fixed bracket for fracture. The external fixed bracket body for fracture is an aluminum alloy frame with upper and lower hollow sides; when a fixed bolt is locked on the frame through a nut, a steel needle is firmly fixed by the frame, so that the aim of fixing fracture is fulfilled. The fixed bolt is a stainless steel bolt; a central fixed nut is cuboid; a central round hole passes through the steel needle; the central fixed nut has large up-and-down and left-and-right motion range in the aluminum alloy frame; upper and lower coaxial fixed bolts are fastened towards the center, so that the steel needle is fixed; and upper and lower fixed nuts outside the frame are fastened towards the center, so that the nut can be fixed on the frame, and the aim of fixing the steel needle is fulfilled. The fracture is fixed by four steel needles. The external fixed bracket is suitable for fixing simple fracture in which the distance between the long bone fracture of four limbs is more than 5 cm larger than the big articular surface. A drag hook is an attached tool and the steel needle bolts can be moved by the drag hook easily and flexibly, so that the steel needles can move up and down as well as leftwards and rightwards as expected and the aim of aligning the fracture is fulfilled.

Description

Bilateral scalable fracture external fixing rack

Art

Medical apparatus and instruments fracture fixation apparatus.

Background technology

Traditional medicine to the Therapeutic Method of extremity fracture nothing more than clamping plate or Gypsum Fibrosum extenal fixation and operation method internal fixtion two kinds of methods.Gypsum Fibrosum extenal fixation is adapted to more stable fracture of fracturing, and does not generally need other apparatus, unrelated to the invention.Clamping plate extenal fixation and surgical menopause method are adapted to unstable fracture, must treat the fracture of comminuted fracture, juxta-articular fracture, extremely unstable with operation method, unrelated to the invention.To some comparatively stable fracture do not pulverized, surgical menopause can be selected to treat, also can select clamping plate External fixation.Operation method wound is large, and economic costs is large, likely causes and pays damage, have certain risk, often not easily by patient is accepted.Clamping plate extenal fixation patient is often more painful, likely causes crush injury to tissue, and patient is difficult to tolerance, also not easily by patient is accepted.The new external fixation risen has multiple in recent years, and treatment wound is little, and expense is low, is easy to patient and accepts, and is promoted rapidly.

By the application to various exterior fixation bracket, feeling that they have his own strong points, respectively fraud to some extent, is all fix with single side bracing substantially, is difficult to regulate, or poor stability, or too heavy, and range of application is restricted.Through years of work, thinking, on the experiential basis being engaged in reduction treatment for many years, sum up a set of experience, namely fix with bilateral adjustable support the new method that external fixation of fracture implemented by bone garden pin, in most cases need not operate on and just can stably fix fracture face, light, easy adjustment, is easy to operation, applied range, reach the object that Micro trauma fixes fracture, economy, convenience, good effect, patient are easy to accept.

Summary of the invention

Be difficult to regulate to overcome unilateral external fixation apparatus, or poor stability, or too heavy, the drawback that range of application is restricted, the present invention adopts bilateral framework to fix, good stability, and range of accommodation is wide, is easy to operation.Fracture external fixing rack main body adopts aluminum alloy materials, easy to drawing materials, is easy to processing, economical, light, and intensity is better, not yielding, and postoperative activity is convenient, pleasant, not easily gets rusty, and sterilization is convenient.Fixed-use bolt, nut and subsidiary instrument stainless steel material, easy to drawing materials, intensity is better, is easy to processing, not easily gets rusty, and sterilization is convenient.Osseous pin can, with the rustless steel osseous pin of diameter 2.0 ~ 4.0mm, be the standing consumption equipment of hospital, is easy to buy, does not generally provide with exterior fixation bracket.

Accompanying drawing explanation

Fig. 1 is entirety intuition figure of the present invention.Wherein 1 is fracture line, and 2 is skin sub-dermal soft tissue, and 3 is osseous pin, and 4 is cortical bone, and 5 is medullary cavity.

Fig. 2 is exterior fixation bracket main-body structure figure and adnexa connection layout.Wherein 11 is exterior fixation bracket main body, 10 set bolts, 9 center hold-down nuts, 8 hold-down nuts and pad, 7 retractor bolts, 6 retractor hooks.

Fig. 3 is the upper and lower limit structural map of exterior fixation bracket (11) main body.

Fig. 4 is retractor structural map.Fig. 5 is retractor hook frontal construction figure.Fig. 6 is retractor hook side structural map.Tu7Shi center hold-down nut frontal construction figure.Tu8Shi center hold-down nut side surface configurations figure.Hold-down nut top and bottom, Tu9Shi center structural map.Figure 10 is hold-down nut and pad figure.Figure 11 is set bolt structural map.

In Fig. 2, exterior fixation bracket main body (11) aluminum alloy materials is cast as one, for rectangular frame, be hollow in the middle of framework, upper and lower two frames are also hollow, and set bolt (10) can move up and down in upper and lower side frame (Fig. 3), and framework meets without connecting sewing, welding, intensity is better, centre has framework to support, not yielding, is easy to processing.First casting forming, then use machine tooling polishing, make smooth surface, then surface oxidation treatment, with rub resistance.Set bolt (10) in the upper and lower side frame of aluminum alloy frame can up and down, left and right is movable, when hold-down nut (8) is tightly locked in set bolt on framework, framework is just fixed draw point firmly, reaches the object of fixing fracture indirectly.Concerning small size support, support intensity does not need too large, can also remove two middle framework F, reduces support window number, strengthens window, and such bolt range of activity is larger, and it is smaller again that support can also do.

Set bolt (10, Figure 11) M5 is common stainless steel bolt, and two ends have the flat mouth can rotated with flat mouth screwdriver.

Center hold-down nut (9, Fig. 7, Fig. 8, Fig. 9) is cuboid, central circular hole φ 5mm, is the hole through draw point.Have screw thread in hole concentric up and down, the bolt (10, Figure 11) of M5 is simultaneously to blocking draw point (3) during center fastener.Center hold-down nut (9) is upper and lower in aluminum alloy frame, left and right range of activity is comparatively large, even if osseous pin has deviation through during bone marrow, also can correct in certain scope.Set bolt (10) can use flat mouth screwdriver rotating bolt in two ends up and down, make coaxial two bolts (10) up and down to center fastener, draw point (3) can be fixed, upwards fastening below with the hold-down nut (8, Figure 10) at framework upper and lower two places outward again, center hold-down nut (9) can be fixed on framework, thus reach the object of fixing draw point.For preventing aluminum alloy frame frictional wear, under nut, stainless steel gasket can be padded.Two side stands are fixed simultaneously, and the angle that 4 ~ 8 draw points can be made to wish by us firmly fixes (Fig. 1).Two draw points can fix fracture one end, and the fracture other end fixed by another two draw points, and four firmly can make fracture face fix according to the orientation desired by us simultaneously, thus reach the object of fixing fracture.If sensation fracture four draw points are fixing stable not enough, 2 ~ 4 draw points can also be added again and fix, to reach firm object simultaneously.This support can fix eight draw points at most simultaneously.

The nut retractor of retractor bolt and square band hanging groove that retractor (6,7, Fig. 4) is respectively positive and negative screw by a two is linked up with (6, Fig. 5, Fig. 6) and is formed.Bolt is M8 stainless steel bolt, long 160mm, and both sides are respectively positive and negative screw, all there is the flat mouth can rotated with flat mouth screwdriver at two ends, and middle part is six prisms that can rotate with spanner, rotating bolt, retractor can be driven to link up with respectively to both sides or central mobile, thus traction steel needle move.Retractor hook (6, Fig. 5, Fig. 6) is the rustless steel square nut of the two-way hanging groove of a headband, and move along bolt, one is blocked draw point, drives draw point movable time mobile, and freely, people from province is laborsaving in activity.

Detailed description of the invention

This this exterior fixation bracket is applicable to fixing limbs long bone fracture, apart from the simple fracture of large more than articular surface 5cm, or comminuted fracture but bone cips is less or the unionized fracture of bone cips.To fracture reduction by traction under perspective after anesthesia, or para-position substantially, after fluoroscopic examination good apposition, first in astragalus folding face about 2 ~ 3cm place inserting needle up and down under perspective, in be parallel to coronalplane perpendicular to bone major axis osseous pin (3) through skin (2) through medullary cavity central authorities (5), avoid larger nervus vasculairs district, to avoid larger blood vesssls and nerves injuries, pass inside skin (2) 3 ~ 4cm; Previous pin is parallel to through medullary cavity central authorities apart from this pin about 3 ~ 4cm place away from fracture again with same method.With the said method fixing fracture other end again.Place support arm afterwards, fracture reduction situation is checked in perspective is lower, with subsidiary instrument retractor (6,7) mobile draw point, can fracture be changed by draw point translation-angle, if draw point deviation is too large, again thread a needle after draw point adjustment angle can be extracted, fracture reduction is made to reach dissection para-position as much as possible, finally lock osseous pin, fix the nut (8) on support arm, make fracture fixation firm.Fig. 1 is the sketch after successful surgery.Postoperative patient can under the condition of not bearing a heavy burden suitable movable limbs, degree of freedom is relatively large, and pain is comparatively light, and no longer needs other External fixation, is the ready work in advance of later joint function recovery, so patient is easy to accept this kind of method treatment.If this kind of method is fixing dissatisfied, the treatment of other method can also be used instead, not affect the treatment of other method.The maximum advantage of this method can not operate on just can reach good therapeutic purposes, reaches minimally-invasive treatment object, to the periosteum around bone and larger nervus vasculairs almost not damaged, be conducive to union of fracture, can reduce the probability of nonunion widely.Support arm leaves certain adjustment spacing, even if having deviation during osseous pin puncture, also suitably can adjust with support arm, draw point is moved with retractor, can fracture be changed by draw point translation-angle, make fracture reduction reach dissection para-position as much as possible, finally fix the nut on support arm, locking osseous pin, makes fracture fixation firm.

Osseous pin (3) can use the rustless steel osseous pin of diameter 2.0 ~ 4.0mm, thickness Bu Denggu garden pin is selected according to fracture surgery stress intensity, with draw point angulation degree of deformation not greatly principle, can first select thinner draw point, if angulation changes thicker draw point into comparatively greatly again.

Retractor is subsidiary instrument, can the mobile draw point bolt in easy and flexible ground with retractor, make easily draw point by the direction desired by us up and down, move left and right, shift position is easily grasped, and a people can move many places simultaneously, follow one's inclinations institute more than, easy control, reduces assistant's number, accomplishes to get twice the result with half the effort, thus make fracture face by the orientation para-position required by us, reach good para-position object.

This method does not also find the method with being similar to this method and fixing fracture till now, so experience is also few, specification also needs to adjust according to service condition again, improve further again after also needing, present summary out, exchange everybody colleague, strive for that design is more perfect, common service is in extensive patients.

Exterior fixation bracket instruction card (ratio 1: 1)

Exterior fixation bracket main body specification sheet (unit mm)

Claims (1)

1. the outer solid support of fracture: adopt bilateral support jointly to fix, rack body is two to four frame composition one, up and down both sides is hollow framework, and set bolt (10) can move up and down in hollow frame; Through draw point in the central circular hole φ 5 of center hold-down nut (9), coaxial two set bolts (10) are up and down to center fastener, draw point (3) can be fixed, center hold-down nut (9) is upper and lower in aluminum alloy frame, left and right is removable, again with the hold-down nut (8) at framework upper and lower two places outward to center fastener, when hold-down nut is tightly locked in set bolt on framework, framework is just fixed the draw point (3) of more than four and four firmly, reaches fixing fracture object.