FLEXIBLE IMPLANTS FOR STABLE FLEXIBLE OSTEOSYNTHESIS OF FRACTURES OF FEMUR AND TIBIA, RESPECTIVELY AND WORKING INSTRUMENTATION

Abstract: Flexible implants (1, 2, 3) for the stable flexible osteosynthesis of the femur and tibia fractures. In order to achieve osteosynthesis stabilizing the fracture gaps, they are made of short rods (1, 2), one upper and one lower, used in the osteosynthesis for the fracture of the femoral neck, as well as of a long rod (3), used as such or with another long rod (3) and with the short rods (1, 2) in case of stabilizing the double gap fractures crossing the femur neck and every part of the femur placed under the greater trochanter, or only with another long rod (3) for stabilizing the diaphysary fractures of tibia and femur. Working instrumentation required for achieving an efficient surgical operation in the stable flexible osteosynthesis by means of the flexible implants (1, 2, 3) are also disclosed.

Description: FLΞΣIBI-3 IMH LHTS FOR STABLE gT-Kr-TTBIiB OS EOSYMTHBSIS Q? FRACTURES OP ?EMUR AHD TIBIA. -RES-rECTIYBLY AHD WORKING IIBTRUMENTAIIOH The present invention refers to flexible implants used in the s table flexible os teosynthesis of femoral neck and greater troohante frao ares, of øub troohanterian, ediodiaphysary, βapβr- and inter* oondylian fraoturββ of femur and of diaphysary fractures of tibia, as well as to the working ins trumentation required for the introduc¬ tion extraction of the flexible implants in/from the bone * There are known flexible implants for the os teosynthesis of gaps of tibia diaphysary fracture and of femur βuper-*intercondylian, medi diaphysary and sub troohantarian fractures or of the ins table fractur of the greater troohanter, made up of a long, thin body provided wit a long middle part, connected through a ourved part to short, fore and, respectively, posterior end parts, the posterior one being con* * tinued with a flattened part in which a window is made, as well as flexible implants for the os teosynthesis of the gaps of femoral neok fracture, which are made up of a body provided with a straight, long part connected through a curved part to a short end part, the straig part being continued with a flattened posterior part in whioh a win¬ dow or a s tick-shaped part is provided * The disadvantages of these implants consis t in the faot that the mounting finally ob tained by introducing more than two flexible im¬ plants in the bone, in view of s tabilising the gap of fracture is diffioult to be aohiβved and is highly rigid, whioh uselessly prolon the surgery time, also creating, due to the rigidity, biomeohanical conditions not promoting the frao ore healing, and their fas tening i the bone does no t offer reliability in course of the time, sinoe there is the possibility of their slipping, which may appear outside the bone, perforating thus the tegument, or in the medullary channel a fact which leads to the loss of the frac ture gap stabilisation * There are known ins trumentations for the introduc tion/ extraction of a flexible implant in/ from the bone, containing an instrument for hammering a thin, long, flexible implant, made up of a body provided with an aotiv* end, having a plugged channel in whioh the flat tened part of the implant penetrates and in a middle sone of the body a pieroed hole is made through which a rod is introduced, by means of which the implant position can be changed during the hammering (French patent No * 22376o9) , an ins trument for extraoting the flattene part of the implant from the bone diaphysis cortical shell, In view oforeating the possibility of its extraction from the bone, made up of an elongated body, provided with a key-shaped active end and a cir cular oo iar** provided end and a short flattened part between which there is a cylindrical part (Synthes) , an ins trument also used for li ting the flattened part of the implant, formed of a body having an active flattened end , upward ourved (prospectus OEG-B76) , an instru¬ ment for making a hole in the bone for the introduc tion of the long flexible implant according to a certain line, made up of a body with a s traight part, delimited by fore and, respectively, pos terior parts inolined as agains t the s traight part, the fore part being continued with an aotive end , upward curved, with four edges converging to the top, each edge being formed of two s traight parts making an ob tuse angle (prospeotus OEC - B58) , an ins trument for the extraction of the long flexible implant from the bone, made up of a long body ended wit a s tick-shaped end and a handle, the stick-shaped end being located i the window made in the flattened part of the implant ( catallogue AESCULAP, page 42) , an instrument for hammering the implants in case of stabilizing the femoral neok gap of fraoture, made up of a orank-_ shaped body, ended with a lower, aotive end in whioh a plugged channe is made so as to aooo odate the flattened part of the implant, and in the middle zone of the body a rod is mounted for posi tioning during the implant hammering (French patent No * 22376o9) » an Ins trument for modifying the curvature of the flexible implants , made up of a hand le to whioh a body is fas tened , this body being provided with two fixed jaws, inolined as against a horizontal plane, delimiting an opening in whioh the implant is introduced ( catallogue AESCULAP, page 27) , an ins trument for guiding the long flexible implant during the hammering made up of a long, cylindrical body, in whioh the long flexible impla is introduced , the body being provided with a threaded end which is fastened into the coupling of an anvil, to whioh a rod is mounted for positioning the implant during the hammering (French patent B# * 22376o an ins trument for extraoting an implant from the bone, provided with stick*»shapβd rear end, formed respectively of a long body ended with a handle and of a plate-shaped, flattened part, upward curved, having an end part backward directed ( prospeotus OEC, 02) , an Ins trument for aohiβving an impact in view of extraoting the flexible implant from the bone, formed of a cylindrical body to whioh a tail is jointed by means of two bolts, so that one may avoid during the hammering the ri of seizing the body to the rod of the extraotion instrument ( prospeo¬ tus OEC-A59) , and an ins trument for fastening the implant, in view of its curving, made up of a suppor t to whioh a body is fastened in whioh a recess is made for mounting a fixed lower jaw, upward shaped , and a moving upper jaw supported by a rod actuated through an eccen¬ tric by a handle ( oatallogue AESCULAP, page 27) , an ins trument for creating the impact force, made up of a tail provided with a longitu¬ dinally elongated window to which it is fastened a cylindrical aotive end, finished with flat surfaoes, the tail fas tening to the end being made in the middle zone of the latter .( oatallάgue AESCULAP, page 27) , an ins trument for pushing a flexible implant into the bone, formed of a cylindrical body ended with an anvil and a cylindrical aotive end with the external diameter higher than that of the body rest, in whic it is .made a circular channel delimited by a s traight wall, in whioh there may be introduoβd respectively the flattened part of the impla and a multi-functional handle, formed of a tail to whioh there is fas tened a body, in whioh a longitudinal channel is made, its fore part being delimited by a shaped wall, the channel communicating with a transversal channel in whioh a yoke-ended look is mounted und er the action of the foroe Stored in a spring (catalogue SYNTHESIS) . The disadvantages of these ins trumentations consist in the faot that the instruments for hammering a long, flexible implant, for re¬ moving away the flattened part of the implant from the bone diaphysi cor tical shell, for hammering the implants in the oases of s tabilizi the fracture gaps of the femoral neok, for guiding the long flexible implant, and , respectively, for pushing the implant into the bone canno t be used except under the conditions when the implant is ended with a flattened part or with a βtiok- shaped end, the instrument for curvature modifying does no t allow the proper fas tening of the im¬ plants, except in the middle zone, the ins tr lament provided with a plate-shaped part for the detaoh βnt from the bone canno t be used, exoept in case of the implant with one posterior end shaped as a sti the ins trument for achieving the lmpaot required for the extraotion of the flexible implants from the bone is difficult to handle, sinoe it does no t allow the ro tational mo tions of the tail, as agains t the body, the instrument for fastening the implant in view of its curvin does no t allow its curving, except in the middle zone, the instrumen for creating the foroe of impaot requires the application of a rela¬ tively big effort when there are neoessary lmpaot forces of high va- lues, and the multi-functional handle does not allow to apply, by mea of it, forces with relatively high values to the ins truments fas tened to it and it canno t be positioned and kept in the desired position, exoept by hand* The object of the present invention consis ts in achieving esteo- syntheseβ whioh s tabilize the fraoture gaps, enabling the patient's recovery in a short period, under the conditions of making less injur ing operations , with minimal blood losses and with the possibility of making them in all ages and of minimizing the premature and later loc and general complications of the fractures* The theme solved by the present invention consis ts in achieving a mounting which stab ilizβs bo th the ins table frao ture gaps and the ex¬ tension of the principle of flexible os teosynthesis with the known biomeβhanioal benefits for all fractures of femur and tibia diaphysis the stability of the mountings In course of the time is ensured in ea of short flexible implants by their fastening to the diaphysis with a orthopaedic sorew, in ease of long flexible implants, through the sha of the lower end whioh is looked in the hole for the introduction int the bone and being seated with the las t part on the edge bear the hol the performing of . the operation bo th in case of osteosynthesis with short flexible implants and with long flexible implants is easily mad with the ins trumentation adapted to the implant shapes and to the nee of the operating times* According to the present invention, the implants eliminate the disadvantages above mentioned by the faot that they are made of short rods, of whioh one is upper and the o ther one is lower, used in the osteosynthesis for femoral bone fraoture as well as of a long rod, use as such or with ano ther long rod and with the short rods, in case of s tabilizing the fraoture with double gap, these ones crossing the fem neck and every part of the femur plaoed under the greater troohanter or only with ano ther long rod for s tabilizing the diaphysary fracture of tibia and femur and , respectively, the super and inter condylian fractures of the femur, . he short, upper rod being made up of an uppe aotive part, having a shaped end, continued with an upper part, upwar ourved, af ter whioh there follows a long s traight part, connected through a lower ourved part, downward directed , with a part inclined as agains t a horizontal direotion, ended with a lug, the lower short rod being made up of an upper, short, straight active part, with a shaped end connected through an upper part, downward curved, with a long part, downward curved, connected in turn by means of an interme¬ diary and, respectively, a lower part, inward and outward curved , wit a part inclin. as against the horizontal di. _ctionj ende'd with a lug, the long rod being formed of a long, straight part ended with a shaped and, promoting its penetration and directing in the bone, connected through lower and, respec ively, upper parts, inward and outward ourved, to a flat, narrow part and to an end widened part, which is flat or inward curved, so dimensioned that it stops the - complatθ penetration of the long rod in the ' medullary channel, the lower, short rod ha ing. in the lower curved part, downward directed, a radius of curvature equal to that of the upper part, upward curved between 1 and 3 cm, and the axis of the upper active par is paralle to the axis of the pa t inclined as against a horizontal direc ion and forms with the axis of the long straight part an angle of 4o <,.- 7δ°, the long s.traight part having a lower, flat surface limited by. an upper surface whose cross-sectional area has the shape of a trun cated cone, with the small base placed .toward the lower, flat sur¬ face, the lower shor.t rod having, in the long, downward curved part, a radius of curvature between 7 and lo cm, and the radii of curva¬ ture of the intermediary and., respectively, lower parts, inward and outward curved are equal to eaoh other and have values between 1/2 and 1/3 of the curvature radius, of the long, downward curved- part, these radii being lower than the curvature radius of the upper, dow ward curved part, the plane in which there is placed the- lug, the latter having a lower, flat surface limited by a truncated cone- shaped area with the small base located- oward the lower surface, forming with a horizontal plane an angle of 4o „ _ . 7o° and the axis of the upper ,. short, straight part forms with a horizontal plane on angle of 4o° «•• o°, the long rod having the active, shaped end provided with an upper inclination up to 45° and a lower inclinatio up to 3o° or with edges delimiting some faces converging to the lon gitudinal axis of the long rod., the lower and, respectively, upper parts, inward and outward curved, having radii of curvature with values between 3 and 5 mm, and the end part is delimited by the fla a ro part, through some steps inclined as arεins the longitudina axis of the rod, forming with this one an. acute, angle of 6o° β . * 75° symme trioally disposed as against the respective axis, the lower. an respectively, upper, inward..and downward curved parts being half- flattened, the widths of these parts being equal to the width of the flat, narrow pgrt and with the diam ter of the long straight part, respectively. In accordance with the present invention, the in trumentation eliminates the above mentioned disadvantages since, in order to stabilize th*. fracture gaps, under the conα_.tions of performing lass injuring operation, with minimal blood losses, for the intro¬ duction of .the long rod through the hole made in the bone and of the men-tioned lower, shor.t rod through the hole made in the- one, there are usβdtan instrument formed of a short body, provided with an active end, with a frontal recess, delimited, at the lower side by a lower wall, in.-which it is made an elongated seat, communicat ing., with a seat made in a vertical, wall, sidewisβ delimiting- the recβssp the seat shapes being. so selected as to enable the penetra tion of the lower, inward curved pa t of the long rod in the seat made in the wall, when a fragment of the long, straight part of th long rod penetrates in .the elongated seat., and the upper, outward curved part of the respective rod is. placed in the frontal iecess, opposite to which the body has a circular collar, connected, throu a shaped part, with, a short rod in which there is provided a centr circular seat, a pierced- hole-being made in the body, its diameter beitig so selected as to enable the introduction of the long, straig part of the long rod through it, in view- of correcting the curvatu re, -reason for which it is also introduced through a pierced hole, made in the long body of an instrument for lifting the long rod in view of its extraction, from the bone,, the body being ended, with an aotive , -upward curved.. end, in which an upper recess is made being so shaped as to enable the. penetration of the straight long part o the long rod, near the lower inward curved pa t of the long rod, t bod .having, opposite- to the upper recess, a circular collar, con¬ nected through a shaped part with a short rod, in which a circular hole is made for the. initial introduction of the upper short rod over a dep.th of.3 β.-. 4 o , an instrument being used in the hole made in the bone, the instrument in question being made up of a bo to which an anvil and a suppor.t are fastened, the anvil having a short, cylindrical part provided with a circular recess and the su port has a " threaded rod which may be introduced/extracted in/from a L-shapβd channel communicating with the outside, made in a band which there is also worked a longitudinal channel, ended with a ci cular part, -having a dimension' higher than that of an end delimit ing the recess at the- top, so that it is possible to displace the anvil along the channel, when the band is placed in front of the recess, the fastening of the band being achieved by means of a nut threaded on the rod, the body having a straight part, to which the anvil and the support are fastened, delimited respectively by a short part inclined as against the longitudinal axi3 of the straight part and also by a part inclined in the same direction as the short part against this axis, the inclined part being connected, through a circular, collar ..and .a shaped part, to a short rod, provided with a circular seat,., the anvil having an upper, straight part connected with an inclined part with the longitudinal axis parallel to that of the short, port, provided with an upper, inclined surface, whose axis is parallel -to the longitudinal axis of the inclined part, the bond- being provided with an end,. shaped par.t having the shape of a circle arc in cross-sectional are a,- hioh makes with the longitudinal axis, of the s.traight part an angle lower by 5°«. * lo° than the angle form¬ ed by the short part with .the- same axis, the final positioning of. the upper, short rod in the neck being made by means of an instru¬ ment made up of a short body, ended with a shaped end, inclined with an angle higher than 9o° as against the body axis, having a diameter higher than the rest of the body, provided with a straight frontal face,, at the respective end, an elongated seat being made, delimited at the rear side by a semi-oi oular wall so dimensioned that, by in¬ troducing the lug of thβ-upper short rod in it, its part inclined as against a horizontal direction remains outside, the body being con¬ nected., through a circular- oollar and a shaped part with a short rod provided with a circular sea.t, a handle being used for the introduc¬ tion or the- extraction of the short and, respectively, long rods in. and from the bone, this handle enabling during the operation to fas-**- ten the instrument for introducing the short, the lower and, respec¬ tively, the long rodsjan instrument for the final hammering of the long rodjan instrument for the final introduction or lifting of the long rod, in view of its extracting in/from the bonej an instrument for lifting the long rod, -in view of its extraction; an instrument for achieving the adequate line of introducing the long rod in the- • bone 5 an instrument for extracting any of the short and, respective¬ ly long rods from the bone j an instrument for hammering the short .. rods in view of their introducing in the bone 5 an instrument for the final introduction of the upper short rod; an instrument for modify¬ ing the curvatures of the short rod ends; an instrument for detach¬ ing the long rod . from the bone and,, respectively an. instrument for introducing the upper., short rod over a depth of 3 ••• 4 cm, being possible to rotate the handle during the operation so as to position the long rod in the medullary channel or the lower, short rod in the neck, by means of an instrument formed of a long, cylindrical body ended with a posterior, and, respectively, a fore cylindrical collar, with a diameter lower than that of the collar, frontwise provided with a shaped circular recess so as to enable the intro¬ duction of the lower short rod intermediary part or of lower, in¬ ward-curved part of- the long rod; a handle made up. of - an outside shaped body, provide " ith a longitudinal window, ended with a fl red part, the window bein -made in a middle part of the body, con tinued with a posterior anvil and, respectively, an active end of cylindrical shape, in which-i.t is made a_longitudinal, cylindrica channel, continued with a recess delimited by a shaped wall commu nicating with the outside -through a cylindrical seat, in a plane perperndiαular to the plane in which there is placed the channel, the- 1 active:- end a ' cylindrical channel being made, its longitudinal axis being placed under the axis of the longitudinal channel, com municating with the outside through recesses and opposite located the respective channel accomodating a lock provided with a fore, thin part and a posterior, .thick, cylindrical part in which there are..made two circular channels- shifted as against the transversal axis of the channel, the fore- par being mounted under the action of a force stored in a spring, which is supported respectively on a shoulder limiting the recess and also on a fore stopper, mounte in connection with the look, with the possibility of displacement in the recess, which allows to bring, as .the oasβ- may be, the thi part in front of the channel from the recess where a posterior st per is located having the possibility of- displacing and with whic the lock makes a single piece ,~ the . channel communice- ting, with ano ther channel placed-. in the same plane as .the other channel, perpe dicular to the latter, in which., under the action of the foroe st red in a spring, a ball is placed, this ball penetrating dependin on the lock position in one of the channel, the keeping of the spring- in the channel being made by means of . a screw, the rotatio of the- handle around the- longitudinal axis depending on the. needs when introducing the lower, short rod or the long rod in the bone is made by means of the instrument for- finally introducing the me tioned rods in the bone, whioh is placed in the flared part of th longitudinal window,.. all instruments which are handled by means o the handle having one of some collars connected through one of th shaped par.ts with one of the short rods, provided with one of the circular seats, which enables their locaking; for guiding the lon rod- during its initial introduction in the bone, in other constru tive version, it contains an instrument fastened in the handle, formed of a long body, in whioh a jaw is fastened by means of a n the body having a long part connected through a circular collar a a shaped part with a. short rod, provided with a circular seat, op¬ posite to the collar,, the body being provided with a jaw provided . on the frontal surface with a semi-circular recess, having the Ion-, gitudinal axis parallel to that of the long part, the jaw being con¬ tinued with a short rod, outside threaded, having the longitudinal axis in the extension of the long pa t which serves for guiding the jaw, reason for which the latter has a. pierced hole through ihioh the rod. penetrates, a recess having the same shape as the semi-circu¬ lar recess being positioned in front of the jaw recess, by fastening the jaw by means of a nut; for. modifying the curvatures of the lower, downward curved and, -respectively, outward curved parts of the short, upper and, respec iverly, lower, outward curved parts of the short,, upper and, respectively, lower rods, and of the straight, long, par t of the long rod, depending on the needs, due to the bone shape; in another- constructive .version, it contains an instrument made up of a slθ.θve with sidβwise flared edges, jointed with a short bolt, with a U-shaped support, in which there are made a recess and, respecti¬ vely, sθme marginal, longi udinal- slits, separated from the recess, by a wall, a stopper being fastened- to the support, the former com¬ ing into contact with the two short, posterior arms jointed in turn with a sho t bolt to two fore short arms, the latter being bolt- jointed to.. the support, a long, sidβwise flattened part being also bolt-jointed in front of the recess, pierced holes being drilled along the longitudinal axis of this part, which has an external, cir cular collar, used for limiting the- isplacement of a sleeve along it, as a result of the contact between the collar and a. lower edge • of the sleeve, which is sidewise cut so that it may come in contact, sidewise ,. with the par.t, pieroed holes being drilled in the sleeve,-, having the same diameter and the same distance between them as those of the holes from the long part, beside -the holes which are placed along the longitudinal- axis of the- sleeve ,. the latter having also hear a fore, inclined end, two holes located on either side of the longitudinal axis, the sleeve being possible to be closed with a plate, in which there are mounted thick bolts, which may penetrate through the holes from the long part and.. rom the sleeve and, res¬ pectively, thin bolts.-which may penetrate in the holes near the fore end of the sleeve, the arms being provided, in order to achieve more accentuated curvatures of the long part, of the long rod, with upper recesses communicating with the outside, placed at the same level when the arms are brought in working position, in which it is - lo.- s introduced the rod, which is, in this position, located under the long part and. the sleeve, by displacing- downward the sleeve and implicitly the part, the rod being curved, the modification of the rod curva.turβs according to the bone shape being made by means of the sleeve and. bolts between which there are introduced the rods, as the case may be, by keeping the part in the working position, through the holes drilled- in the arms in whioh a bolt is introduced, the bolt in question being mounted, when not working, in the holes made in the supports, in some lower ends of the arms, being introduced .. in slits; for t ansportation or sterilization requirements the slee- vei together with the arms and, respectively, the long part, are ro¬ tating- around the bolt, so as to bring them in the perimeter deli- mi.tad ' by the suppori, position in which they are located under the wall, and the sleeve is folded- around the bolt, being locked in the support, the bolts being secured by nuts against loosening, and for- preventing the displacement of the component parts during the trans- por.t,. namely the short arms and the part, two spacing parts are pro¬ vided * Examples are given below for the achievement of flexible implant and of the instrumentation, according to the present invention, re¬ lated to fig-1 ••• 88, _whioh represent* - fig.l, a side view of a short, smooth, upper, flexible implant for the osteosynthesis-of the femoral neck; - fig β 2, a side view of a long, smooth, lower, flexible implant for the osteosynthesis of. the femoral neck; - fig.3, a view of the end of flexible implant shown in figure 1 which remains in contact with the femoral cortical shell; - fig.4 9 a side view of a long, flexible implant for the osteo¬ synthesis of femur and tibia; - fig.5, a view of the end of flexible implant for the osteosyn¬ thesis of femur and tibia, whioh remains in contact with the femoral corctical. shell; - fig.6, a section through the implant, after the plane A-A, re¬ presented, in figure 5; - fig .7, a partial view of an i pant for the osteosynthesis of femur and tibia achieved in another constructive version; - figo8, a side view with partial section of a working instru¬ ment, for hammering flexible implants shown in figures 2 and 4; - fig.9 „ a frontal view of the end of the instrument, shown in figure 8 which is introduced in a multi-functional handle; - fig.lo, a frontal view of the active end of the instrument shown in figure 8, in which the flexible implant shown in figure 2 or .figure.4 is introduced by hammering; * fig.11, a top view, of the active end of the instrument shown in figure 8, in which the flexible implant shown in figure 2 and figure 4 is introduced by hammering; - fig.12, a view with partial section of the active.-βnd of the instrument shown in figure 8, in contact with a flexible implant shown in figure 4; - fig.13, a side view with partial section of a working instruΛ ment.for the final hammering of a flexible implant, shown in figure 4 - fig.14, a top view of the active end of the instrument shown, inr.figure 13, coming into contact, when hammered, with the flexible implant shown in figure 4; - figβl5, a view with section of the active end of the instru¬ ment shown in figure 13, in contact with a flexible implant shown in figure.4; - figolδ, a side view of a »orking instrument with an active and for introducing or extracting in/from the bone the curvature placed near, the end to be hammered of a flexible implant shown in figure 4; - fig.17, a top view with partial section of the working instru¬ ment shown in figure lβ; - fig.18, a- side view of a working instrument initially used for extraoting a flexible implant shown in figure 4; - fig.19, a top view and partial section of a working instrument shown in figure 18; - fig.2o, a side view of a working instrument, curved and sharpe ed, with 4 edges, for achieving the directing of a certain line into the bone in view of introducing a flexible implant shown in figure 4 - fig.21, a section after plane- B-B shown in fig.2o, through the working-instrument for achieving the directing of a certain line in the bone ;. - fig.22, a side view of a working instrument with the round and bent end of the active end, for extracting from the bone one of the flexible implants shown in figures 1, 2 and 4; - fig.23, a partial top view of the round and bent end of the active end of the instrument shown in figure 22; - fig.24, a side view of a working instrument for hammering a flexible implant shown in figure 1; -.fig.25, a partial top view of the end for introducing in a multi-functional handle the working instrument shown in figure 24; - fig.26, a frontal view of the active end of the working instru ment shown in figure 24; - fig.27, a section through the instrument, after plane C-C, shown in figure 24; - fig 0 28, a partial section and view of an aotive end of the instrument for hammering a flexible implant, shown in figure 24, with.which it comes into contact; - fig.29, a partial section and side view of a working instru¬ ment for the final introduction of a flexible implant shown in figure 1; • * • fig.3o, a top view of the instrument shown in figure 29; - fig * 31.,. a view in plane of an active end of -the working instru¬ ment.shown im figure 29, in contact with a flexible implant; - fig.32, a partial section and side view of a working instrument for modifying the position of the end of one of the flexible im¬ plants shown in figures 1 and 2j . -"fig.33, a transversal section, after plane D-D, shown in fi¬ gure.32, through the instrument; - fig.34, a pariial section and side view of a working instrument for lifting from the metaphysis cortical shell the end of a flexible implant shown in figure 4; - fig.35, a top view of the active end of the instrument shown in figure.34; . - fig.36, a side view of a drill for drilling an initial hole in the bone ; - fig.37, a side view of a working instrument for creating the impact force required for the introduction of the flexible implant in the bone; - fig.38 0 a partial section and side view of a- working instrument for the rotation in the bone of one of the flexible implants shown, in figures 2_and 4, by means of the working instrument shown in fi¬ gure.8, fastened in a ulti-functional handle; - fig.39, a frontal view of the working instrument shown in figure 38j - fig.4o, a partial longitudinal section and view.of a working instrument used for guiding a long flexible implant during its in¬ troduction in the bone; - fig.41, a transversal section,, after plane B-B, shown in fi- gurβ-4o, through the working instrument; • . - fig β 42, a side view and partial section of a working instru¬ ment for achieving an impact required, for extracting the flexible implant from the bone, by means of the instruments shown in figures 22 and 34; - fig.43, a pa tial section add top view of an active end of th instrument shown in figure 42; - fig.44, a side view and partial section of. a working instrume for introducing an upper,. smooth, short, flexible implant, in the bone, over a depth of 3» * .4-cm; . - fig.45, a seotion after plane 5-E, shown in figure 44, throug the instrument; - fig.46, a view of an end for fastening in the multi-functiona handle of. the. instrument shown in figure 44; - fig.,47, a partial longitudinal section and view of an active end. of the working instrumen-t shown in figure 44, in contact with a upper, smooth, short flexible implant; - fig.48, a frontal view of the active end of the instrument shown in figure 44, in contact with an upper, smooth, short, flexi¬ ble implant transversally sectioned; ' " - fig«49 » a side view of a working instrument for seizing and correcting the curvature of a flexible implant, shown in working position;. - fig.5o 9 a transversal section after plane G-G, shown in figur 49, through the instrument; * - fig.51, a top view of the working instrument shown in figure 49, with partial sections; - fig.52, an axonometric view of the instrument shown in figure 49; - .- fig.53, a partial, transversal section through the construc¬ tive, detail "G" shown in figure 51; - fig. 4, a section through the instrument after plane I-I show in figure.51; - fig.55,- a transversal section after plane J-J, shown in figur 49 through the instrument; - fig. 6, a side view of a plate in which there are mounted bolts of the working instrument shown. in figure 49} - fig * 57, a section after plane K-K shown in figure 49, throug the instrument; - fig.58, an axonomβtrio view of the working instrument shown in figure.49; - fig.59, a transversal section after plane L-L, shown in figur 58, through the instrument; - fig.6o, a side view of a working instrument for stiffening t long implants in case of their initial hammering or whan grasping various instruments for their introduction or extraction in/from the multi-functional handle; - fig.61, a top view of an active end of the working instrument shown in figure 60 ; - fig.62, a side view of a multi-functional handle designed to fasten various working instruments for the introduction of a flexib implant in the bone ; - fig.63, a partial longitudinal section and top view of the multi-functional handle; - fig»64, a transversal section after plane M-M, shown in figure 63, through the multi-functional handle; --fig.65, a frontal view of an active end of the multi-functiona handle ; - fig.66, a diagram of mounting short flexible implants combine with. two long flexible implants; - fig.67, a diagram of mounting short flexible implants combin¬ ed with a. long* flexible implant; " "- fig. 8, a diagram of mounting two long flexible implants spa¬ tially superposed in two points for the osteosy thesis of super and intercondylian, mβdiodiaphysary and subtrochantarian fractures of f e mur ; - fig.69, a diagram of mounting two flexible implants which are spatially superposed in only one point for the osteosynthesis of the ins table fracture of the greater troohanter; - fig.7o, a diagram of mounting from the bottom to the top two long flexible implants which are spatially superposed in two points, for the osteosynthesis of the tibia diaphysary fractures; - fig.71, a diagram of making a hole for the introduction of a long. flexible implant in the bone; - fig.72, a diagram of achieving the prevention of buckling the long. flexible implant when it is initially introduced in the bone; .. - figβ73, a. diagram of introducing a long flexible implant in . the bone, in the first phase, with guiding, by using a working ins¬ trument shown in figure 60; - fig.74,- a diagram of correcting, by rotation, the line of a long, flexible implant in the bone, by means of working instruments shown in figures 8, 38 and 62.; - fig.75, a diagram of the. final introduction of a. long, flexi¬ ble implant in the bone, by means of a working instrument, shown in figure 13; - fig.76, a diagram of.. ounting a long, flexible implant and of lifting it from the bone , 'b means of the working instrument shown in figure 16; - fig.77, a diagram of correcting the curvature of a long, fle¬ xible implant by means of the working instruments shown in figures 16, 18 and.62; - fig.78, a view of the working instrument shown in figure 49, placed in. its working position, for curving a long flexible implant - fig, 79, a diagram of placing the working ins ruments in view. extracting a long, flexible implant by means of the working instru¬ ments shown in figures 22 and 34; - fig.So, a diagram of .applying the impact force required for > extracting a long, flexible implant by means of the working instru¬ ments shown in figures 22 and 42; - figβδl, a view of the working instrument shown in figure 49, placed in working position, for modifying the curvature of the ends of short,. flexible implants; - fig.82, a diagram of initially introducing an upper, sho t, fleScible implant in the femoral neck, by means of the working instr ments shown in figures 37, 44 and 62; - fig.83-, a diagram of intermediary introduction of an upper, flexible implant in the femoral neck by means of the working instru ments in figures 24, 37 an ^ 62; . ." - fig.84, a diagram of final introduction of an upper, short, flexible implant in the femoral neck, by means of the working instr ments shown in figures 29, 37 and 62; - fig β 85, a diagram of introducing a lower, short, flexible im¬ plant in the femoral neck by means of the instruments shown in fi¬ gures 8, 37 and 62; - figβSδ, a diagram of positioning a. lower, short, flexible im¬ plant in the femoral neok by means of the instruments shown in fi¬ gures 8, 38, 62; - fig β 87, a diagram of final mounting of short, flexible im¬ plants in the bone; - fig.88, a diagram of extracting short, flexible implants from the bone, by means of the working instruments shown in figures 22 and 42. According to the present invention, the flexible implants are- made up of_short rods, 1 and 2, of which one is upper and the other one is lower, used in the stable flexible osteosynthesis for the fractures of the femoral neck as well as of a long rod, 3, used wit another long rod, 3, in the stable flexible osteosynthesis of the- fliaphysary fractures of their mounting is made from the bottom to the top, starting from the supermalleolar level on either side of tibia, achieving their spatial super ' positiόn in two points, in the lower and upper parts of the medullary channel, or in the . stable flexible osteosynthesis of the superintercondylian, diaphy¬ sary and sub troohanter ian fractures of femur, in which case, the mounting of rod 3 is made by introducing it in condyle or over con- dyle, inside or outside, achieving a spatial- superposition in the . lower and upper parts of the- medullary channel; in case of the ins- table fractures of the greater troohanter, - plain or comminuted, inter or per troohanter ian fractures -, the two rods are introduced over condyle, inside and outside, being spatially superposed in only one point, in the lower .pa t of., the medullary channel and parallel placed, in the femur n ck and head. In case of stabilizing fractures wi.th double gap crossing the femur neok and every femoral part located under the greater troohan¬ ter, the osteosynthesis is. achieved by means of both rods, 1 and 2, toge.ther with one or both rods 3« Rod 1 is formed of an upper active part, a, with a shaped end, b, promoting the penetration and the directing, giving the possibil ty of choosing, when manoeuvring from the. outside , the line require for stabilizing the fraoture gap, continued with an upper part, c, upward curved, after which there follows a long, straight part, d, connected, through a lower part, f , downward curved, with its radius of curvature equal to that of part c, b tween 1 and 3 cm, to a part, f, inclined as against a horizontal direction, ended with a lug, go The axis of part a is parallel to the. axis. of part f and forms an angle of 4o°,..7o° with, the axis of., part d β The latter has a -lower, flat surface h, delimited by. an upper surface i, whose cϊβBs-seo io is. shaped as a .truncated cone, with the small base placed toward the surface h. Hod 2 is formed with an upper ,. short, straight, active part,j, with a shaped end, k, promoting the penetration and the directing, giving the possibility of choosing, when manoeuvring from the out¬ side, the line required for stabilizing the fracture centre, con- . nected through an upper, downward curved port, 1» with, a long, down¬ ward, curved part 5 m, connected in turn, .through intermediary and,.. respectively, lower parts, n and o, inward and outward curved^ the radii of curvature having values lower than that of the curvature radius of part 1, with a part, p, inclined as against a horizon¬ tal direction, ended with a lug, q. The latter has a fla.t lower surface, r, delimited by an upper surface with a truncated cone cross-section, s, with the. small base toward surface r.The βurvatu- re radius of part is 7 ... lo cm, and the curvature radii of parts n and o are 1/2 ... 1/3 (7 .., lo) cm_ The plane in which lug q is placed forms an angle of..4o°«._ 7o° wi$h a horizontal plane. Th axis. f part j also forms an angle of 4o°... 7o° with a horizontal plane • Rod 3 is made up of a long, straight part, t, ended with a shap¬ ed, active end, u, with an upper inclination to 45° and a lower in¬ clina ion to 3o°, whioh makes .possible, when manoeuvring from the putside, to chose the line required for stabilizing the fracture gap connected, through some lower and, respectively, upper parts, v and W",- inward and outward curved, with curvature radii having values bet ween 3 and 5 mm, with a flat, narrow part, x, and a widened, flat or inward curved end part, y, so dimensioned as to stop the complete penetration of rod 3 in a medullary channel, not shown in the figure Pa y is delimited by part x through steps z, inclined as frrάns th -longitudinal axis of rod, 3, -forming with it an acute angle of 6o°... 75°, symme rically arranged as against the respective axis. Parts v and w are half-fla tened and the width of part x is equal to those of parts v and w, with the diameter of part, t, respec ively.. The end u may have edges. a , delimiting some faces converging to the longitudinal axis of rod, 3. According to the present invention, the ins rumentation is com¬ posed of tan instrument 4, for introducing rods 2 and 3, an instru-. ant 5 for final hammering of rod 3, an instrument 6, for final in- troduction or lifting of rod 3, in view of its extraction, an instr ment 7, for lifting rod 3, in view of its extraction, on instrument 8 for achieving the adequate line of a hole b in a bone 9, tibia o femur, for the introduction of rod 3 according to a certain line, an instrument.11, for hammering rods 1 and 2 in view of their intro ducing in bone 9, an instrument 12, for the final introduction of rod l,an, instrument 13 for modifying the curvature of the ends of rods l_and 2, an instrument A, for guiding rod 3 when introducing i in bone 9,* by hammering it, an instrument 14 for extracting parts v and w, belonging to rod 3 from bone 9, an instrument B for achiev ing an impact for extracting rods 1, 2 and 3 from the bone 9, an instrument C, for introducing rod 1, over a depth of 3°«o4 c* 71 , a* 1 instrument D, for fastening rods 1, 2 and 3 in view of their curvin depending on the needs imposed by the locating of the fracture gaps an. ins rument 15, drill-shaped, a.. working instrument 16 for creatin the impact force necessary for the introduction of rods 1, 2 and 3 in bone 9, an instrument 17, for the final introduction of rods 2 and 3 in bone 9 , an ins trument Ef for stiffening long rods 3 during the ir ini tial introduc tion in bone 9 and , re spec tively for manoeu¬ vring, ins truments 4 , -5 , 6 , 7 , 8 - lo , 11, 12, 13 , A and B , in view of their introducing in a multi-func tional handle , P, which can be r ota te d by means of instrument 17. Ins trument 4 is made up of a sho t body c , provided wi th an ac tive end d i having a frontal recess e i , delimite d at its bo t tom side by a lower wall f i , in which an elongate d se a t i is made , com municating wi th a se g t h i made in a ver tical wall i i , sidewise deli mi ting the recess a i • The shapes of se a ts g i and h i are so selec te d as to enable the pene tra tion of par t v in sea t h , when a fr agment . of part.-t penetrates in seat gi, and part w is placed in recess βi. Opposite to recess e , body c has a circular collar j connected through a shaped part with a short rod 1 . A circular seat m x is provided in the latter. In the...middle of body c , there is made a pierced hole n , with a diameter so selected as to enable the intro duction of rod 3, through it. Instrument 5 is formed of a long body o ended with a frontal recess pi, delimited at its bottom side by a wall qi and sidewise. by a wall ri» In the wall qi there is made a seat si so dimensioned that, when a fragment of part t of rod 3 is introduced in it, its part v be in contact with wall r , and part w be positioned outside the recess pi. Opposite to recess pi, body oi has a circular collar ti, connected through a shaped par.t.ui with a short rod vi. A circu lar seat is provided in this one. In the centre of body c , ther is. made a pierced hole x with a diameter so selected as to enable the introduction of rod r through it. Instrument 6 is formed of a long body y with two inclined face z , ended with a frontal, active recess a , so dimensioned as to enable the contact betv/een body y and part v of rod 3, whan no ra lative motion of body y is possible in the transversal direction, as against rod 3« Opposite to recess aii, body yi has a circular collar bii, connected through a shaped part cii with a short rod di A seat ei_ is provided in the latter. In the centre of body yi ther iiss mmaaddee aa ppiieerrcceedd hhoollee,, ff ,, wwiitthh aa dd-iameter so selected as to enab the introduction of rod -3 through it. Instrument 7 is formed of a long body gii ended with an active upward curved end hi-f , in which there is made an upper recess iii, so shaped as to enable the penetration of part t of rod 3, near par v. Opposite to recess iii, the body H has a circular collar jii connected through a shaped part kϋ f with a Bhoϊt ϊod 1 ±± Λ ci£cu lar seat m ii is provided in the latter. In the centre of body g ii , there is made a pierced hole n , with a diameter so selected as to enable the introduction of rod 3 through it. Instrument 8 is made up of a body o provided respec ively wit a straight, posterior part p and a shaped, upward curved, fore part q , ended with a sharp end r , to which some cutting edges s of part q ii are converging. The edges s ii are parallel in the first half of part q , then they are converging to end r .Par t p is connected through a circular collar t ii and a shaped part u ii with a -sho rod v ii provided with a circular seat w ii , Instrument lo is formed of a. long, thin body x ii ended with an active, hook-shaped, inward curved end y ii , so shaped as to enable the gripping of part.v belonging to rod 3 or the introduction of ro 1 or rod 2 in edge g. The body ii is connected through a circular collar z ii and a shaped part a iii with a short rod b iii , provided • • j 4 with a circular seat e • Instrument 11 is made up of a body d provided with a posteri part e , inclined as against a horizontal plane, which is connect through a vertical part f 111 y/ith a fore, horizontal flat part g A semi-circular seat h iii is made in the latter, being GO dimension as to be penetrated by lug g of rod 1. Part e iii is connected throu a circular collar i 111 and a shaped part j with a short rod k provided with a circular seat 1 . Instrument 12 is made up of a short body m iii , ended with a shaped end n , which is inclined, with an angle higher, than 9o° as against the axis of body m iii , having a diameter higher than all the rest of body m • iii , provided with a straight, frontal * face o iii • In the end n there is made an elongated seat p 1 , delimited at its rear side by a wall q iii of semi-circular shape, so dimensioned that when introducing lug g in it, its part f remains outside - The body m is connected through a circular collar r and a shaped part s with a short rod t , provided with a circular seat u . Instrument 13 is formed of a body v iii , ended with a cylinder- shaped end w , having an external diameter higher than that of body v , in which there is made α seat x , open to the outside, sidewise placed, having the longitudinal axis perpendicular to the Λ 4 longitudinal axis of body v , in front of which there is a flat wall y . Body v is connected through a circular collar z and a shaped part a with a short rod b , provided with s circula seat c . Instrument A is made up of. a long body 18, to which a jaw, 2o is fastened with a nut, 19* The body 18 has a long part d , connect¬ ed through a circular eollaϊ β v and a shaped part f v with a sho t rod g iv , provided with a circular seat h ϊ Opposite to collar e , the body d is.ended with a jaw i provided over a frontal surface j with a semi-circular recess k , having the longitudinal axis parallel to that of part d . In the extension of jaw i there is provided a short rod 1 autside threaded, having the longitudinal axis placed in the extension of part d v serving for guiding jaw 2o, reason for which., the latter, has a pierced- hole , through which rod 1 penetrates. By fastening jaw 2o with nut 19, in front of the recess k o_ET jaw- i there is positioned a recess n v , having the same shape aH-- that of recess k from jaw i . Instrument 14 is made up of a thin, long body o v , ended with an iv iv active ,. upward curved, widened end p , provided with two claws q so shaped..as to enable the contact with the inclined steps z of the rod 3. The body o is delimited, through a circular collar r , by a handle s , provided with a longitudinally elongated window t v . Instrument B is composed of an outside shaped handle 21, which is coupled, through a connecting piece 22, with a cylindrical, active end 23, axially provided in turn with a longitudinal channel u v which communicates with the outside through a slit v v inclined os .. against the longitudinal axis of handle 21 with on angle of 45°, the width of slit being equal- to 1/2 of the diameter of channel u , enabling the introduction of any of the bodies x and o v from ins¬ truments lo and 14. The handle 21 is provided with a spherical seat w v in which a spβrical end x of part 22 penetrates, opposite -to it being a short, outside - threaded rod y , by means of which the joint with end 23 is made, reason for which a hole z v is drilled in the joint. For ensuring the threaded joint between part 22 and end 23, the pins 24 penetrating in rod y are introduced in the end. Instrument 15, shaped as a drill is well known and is used for making a hole with straight axis in bone 9» Instrument 16 is formed of a tail a , provided with a longitu¬ dinally elongated window b v ,. placed near the rear, end o v of the tail a v » The latter forms a single piece with an active end d , having. an intermediary part e shaped as a truncated cone, delimited res¬ pectively by an upper cylindrical part f v and a lower, cylindrical part g , the diameter of the latter being higher than the diameter part fv β τhg longitudinal axis of handle a crosses the longitu¬ dinal axis of the active end d v , near part f v , in order to achieve Instrument 17 is made up. of a long, cylindrical body h v , ended respectively with a posterior, cylindrical collar i v and a fore, cylindrical collar j v , having the external diameter lower than that, of collar i v , fron.tally provided with a circular recess k v , so shap¬ ed as. to enable the introduction of part n of rod 2 or of part v of rod 3. Instrument σ is formed of a body 25 to which there are fastened an anvil 26 and a support 27. The anvil 26 has a short, cylindrical part l v , provided with a circular recess m , and the support 27 has . a threaded rod n which may be introduced/extracted in/from a L-shap- ed channel o v , communicating with the outside, made in a band 28o In the latter, there is also worked a longitudinal channel p v , ended with a circular part q v , having a dimension higher than the end r v which delimits at the top side the recess m , so that it is possible to displace the anvil 26 along the channel o , when the band 28 is placed in front of the recess m . The fastening of band 28 to the support 27 is made by means of nut 29 threaded on. rod n v . The body 25 has a straight part s v on which there ar9 fastened anvil 26 and support 27-, delimited respectively, by a short part t v , inclined as against the longitudinal axis of part s v and by part u , also inclin¬ ed in the same direction as part t v , as against the same axis. Part u v is connec ed through a circular collar v v and o shβped part w with a short rod x , provided with, a circular seat y V o The anvil 26 has a straight, upper part z v connected with an inclined part a v ,. having the longitudinal axis parallel to that of the short par.t t v β - The part a has an upper, inclined surface b parallel to the lon¬ gitudinal axis of part u v . Band 28 is provided with a shaped, end vi part σ ,. having the shape of a circle arc in transversal section which makes with the longitudinal axis of the straight part s v an angle smaller by 5°.o<> lo° than the angle formed by the part t v with the same axis. Ins tr ument D is composed of a sleeve 3o wi th sidewise flared which two pos terior , shor t arms 33 may come into contac t , be ing join e d in turn by means of a shor t bolt, 35 with two fore , shor t arms , 36. The la tte r are jointe d wi th a bolt 37 to suppor t 32 , in front of the recess d . To the bol t 37 , there is also jointe d a long par t 38 , sidewise fla ttene d , in which there are made pierced holes h vi . along the longitudinal axis. The par t 38 has an exte rnal collar v , serving for Iii ting of the displacement oft Jlβe ' ve 39 along it, as a result of the contact between collar i v and a lower step j vi of the sleeve 39, which is sidewise cut so that it may come sidewise. into contact with part 38. In the sleeve 39 there are made some pier¬ ced holes k vι , having the same dimension and the some distance be twee them, as those of holes h . ffxcβpt holes k v , which are located along the longitudinal axis of sleeve 39, in the latter there are also disposed two holes on either side of the longitudinal axis, near a fore, inclined end l v • • Sleeve 39 may be closed with a plate 4o in which there are mount¬ ed thick bolts 41, which 3y penetrate- through holes h v and k and thin bolts, which, may penetrate in holes m vι . By means of bolts 41 and 42, it is possible to position one of rods.l and 2 in view of modifying its curvature depending on the needs. For maintaining part 38 in working position, a bolt 43 is introduced in the holes n v made in the arms 34, the bolt in question being mounted, when not working, in the holes o v made in the support 32 and the lower ends p vι of the arm3 34 are introduced in slits e and f vl , in view of achieving a more accentuated curvature of rod 3, the arms 34 ore provided with some upper recesses q vι which communicate with the outside, placed at the same level when the arms 34 are brought in the working position, in which rod 3 is introduced, which is placed in this position under pa t 38 and sleeve 39. When removing bolt 43 and displacing upward sleeve 39 and implicitly part 38, the rod 3 is curved. For requirements of transport and sterilization, the sleeve 39 is displaced along fart 38, the ends p vι of arms 34 are removed from slits β and f , which allows the folding of arms 34 with arms 34 and part 38...with sleeve 39 around bolt 37, so as to bring them in - the perimeter delimited by support 32, a position in which they are placed under wall g , and sleeve 39 is folded around bolt 31, being locked in its support. The bolts 31, 35 end 37 are secured against loosening by means of nuts 44, 45 and 46. In order to prevent the displacement of the short arms 36 and part 38, during the transport, two spacing pieces 47 are also provided. Instrument ϊ is composed..of. two arms 48 and 49, jointed through a bolt 5o, provided with intermediary straight parts r v and s v , continued with horizontal, posterior parts t and u v and fore parts.v ' and w , respectively, inclined as against a horizontal plane. The latter are connected with one of the shaped jaws 51 and . 52, following the external shape of the flexible rod 3, serving res- pec ively for fastening rod 3 in view of its guiding during the in tial introduction in bone 9 and for seizing and manoeuvring the in truments 4, 5, 6, 7, 8, lo, 11, 12, 13, Λ and C for the introducti of extraction in and. from the multi-functional handle. Handle F is formed of an outside shaped body 53, provided with longitudinal window x , ended with a flared part y , through whi the position of body 5 is made in a middle p ctively with a posteri • A cylindrical, lon and it is continued wi communicating with outside through a cylindrical seat f v . In a plane perpendicular to the plane in which there is placed channel c v , at the end b v there is made a cylindrical channel g v . , having the longitudinal axis placed below that of channel c _ Channel g communicates with the outside through the recesses h and i , respectively, opposite place and in this channel, a lock 54 is located, being pr vii vided with a tzin, fore part, j and a thick, cylindrical, poster part k , in which there are made two circular channels l 1 and m vι shifted placid as against the transversal axis of channel c vii Part j is mounted under, the action of the force stored in a spr vii 55 which-is supported respectively on a shoulder n which limits the recess i v and on a fore stopper 56, mounted in connection wi lock 54, with the possibility of displacement in the recess i v which allows to bring, as the case may be , the thin part in front the channel c v . The posterior stopper 57 making a single ' piece vii with.lock 54 are placed in recess h with possibility of displac ment. Channel g v communicates with a channel c 1 placed in the same plane with channel g vx • placed perpendicular to the latter, i which, therα is disposed, under the action of a foroe stored in a spring, 58, a ball, 59, which, may penetrate, depending on the posi vii vii tion of lock 54, in one of the channels 1 and m o The maintai ing of the spring 58 in channel o is made by means of screw 6o_ For introducing rods 3 in bone 9, a circular hole p vii is dril ed in the latter, working first with a drill-sh pβd instrument 15, then continued with instrument 8, so that the end r ii reaches in t longitudinal axis of the medulliry channel, forming the line of ro 3 penetration in it. The introduction of rod 3 in the medullary channel through hole.p is achieved by means of instrument 4, in troduced in handle F. The buckling of rod 3 which may appear durin the introduction,, due to the resistance of bone 9 and of blows given to handle F, by means of instrument 16 is also prevented by guiding the rod with instrument A mounted in handle F or with instrument S. Depending on the needs, rod 2 can be rotated inside the medullary channel through the instrument 4 fastened in handle F in which instr ment 17 is introduced. For the final introduction of rod 3 in the bone 9 and for bring¬ ing part y of rod 3 in contact with the external surface of the con- dyle, the last hammerings on the last part of introduction are made by means of ins rument 5 mounted in contact with part y and then, fo including part y in. bone 9, the instrument 5 is brought in contact with part w or , as the ca3β may be, by means of instrument 17. At the end of the operation, in order to avoid an accidental sid slipping, the lower part y. is brough in the medullary channel by means of instrument 6 fastened in handle F until. part y comes into contact with the external surface of the condyle. Depending on the needs, rod 3 is manually curved by means of ins truments 6 and.7. for which it is introduced through holes f ii and n i provided in them. The curving of rod 3 may be also made by means of instrument D by introducing rod 3 in recesses q vι ' made in arms 34 and by displacing downward sleeve 39 and, implicitly, part 38. After obtaining the fraoture consolidation, for extracting rods 3 of osteo synthesis from the medullary channel, the instrument 6 is introduced between part y of rod 3 and bone 9, so that its frontal recess a penetrates up to the part w of rod 3, creating thus the possibility that by hammering several times the handle F to which instrument 6 i fastened, parts v and w. should not be fastened anymore to bone 9, after which instrument 7 is in- handle F, instead of handle 6, allowi through thβϊ tilting motion, the lifting of parts v and w at the sur- face of bone^ 9. From now on, par.t v is brought into contact with ins trument.14 and, if necessary, the part v is brought into contact wit instrument lo, achieving by drawing, the extraction of rod 3 from bone 9. The total extraction of rod 3 from bone 9 is made by applyin impact forces by means of instrument B on one of collars z and r of instruments lo and 14. The preparation of the introduction of rod 1 and 2 in bone 9 is made by modifying the curvatures of parts e and o according to the shape of bone 9, using sleeve 39, in which rod 1 or rod 2 are introduced, and the lug g or the lug q ' arβ included in part x xix of instrument 13 with whioh one actuates by means of the multi- unctional handle F. During the operation, sleeve 39 is fasten ed to arms 34 through bolt 43 so as to apply the effort required for the curvature modification. For the initial introduction of rod 1 in the neck q v of bone 9 a hole r vi i is drilled in bone 9, after which, by repeatedly hammer¬ ing the anvil 26, belonging to instrument C, the rod 1 fastened in . the latter is introduced by guiding through hole r vl . The intrdduc- tion of rod 1 in the neck q vii is made by means of instrument 11, reason for which this one is assembled to handle F, on which blows are repeatedly applied with instrument 16, so that part o is directe to the inferior and internal- side- as against the femoral head, and the part d is directed to the superior and. external side as against the femoral head, so that rod 1 may come near and parallel to the upper edge s of the femoral neck q • Then, a hole t is d±illβd in the bone, being located under ho r^ through which rod 2 is initially introduced by means of instru¬ ment 4, in which part n of rod 2 is placed, supported by handle F, in which one introduced instrument 17 for the final introduction of body 53 in part y , and by means of this instrument, one modifies, by rotation, the position as against the longitudinal axis, after which rod 2 is finally introduced in neck q vii by repeatedly applyin blows on handle F to which instrument 4 is fastened, being in conta with rod 2. In the final position,, rod 2 has the part 1 placed in th lower side of the femoral head, the part following a direction pa- rallel and very near to an edge u vii of the femoral neck q vii The positioning of rods 1 and 2 related to bone 9 is achieved by means of screws 61 and 62 fastened into bone 2, so. that parts f and p of rods 1 and 2 come into direct contact with the cortical shell. The extraction of rods 1 and 2 from bone 9 is made by dismountin screws 61 and 62 and by fastening in turn rods 1 and 2, by means of instrument lo, which enables that by repeatedly applying blows with instrument B, the instrument lo should be removed away from bone 9, which has as o. result the extraction of rods 1 and 2„ For the introduction of rods 1, 2 and 3 in bone 9, proceed first to the introduction of one or both rods 3 in bone 9, up to part imme diately over the fracture gap, then introduce rods 1 and 2, then co tinue the compl te introduction of rods 1 and 2 or rod 3, the mounti stabilization being performed with screws 61 and 62 for rods 1 and 2 and by bringing part y.of rod 3 in contact with the external surface of the femoral condyle. In accordance with the present invention, the implants and the instrumentation present the following advantage ss - the flexible implants allow, through their 3 true turn inabling. their use in various groups of two, three and four, the osteosynthe sis of all types of femur fractures and of some tibia fractures; - the upper and, respectively, lower short, flexible implants usad for the osteosynthesis of femoral neck fraαtures, enable through .their configuration to improve he reduction of the fracture through, endoosseous taxis, do not damage- the intraosseous vascular anastomoses, minimizing the incidence of la.ter necroses of the femoral head, their fastening with orthopaedic screws to the femur diaphysis achieves a mounting with maximal- stability in course of the time, the flexible charac e is-tics of- the. implant, to which their divergently curved shape is-.associatβd, ; give them the .possibility of working in a dynamic cou¬ ple, alternatingly orβating .tensions of traction, compression, 'which promo±e the. biologic processes of fracture healing by accelerating them; : - the mounted long, flexible implants, which are spatially super¬ posed in the lower and uppar. parts of tha femur or tibia medullary- channel, have the advantage that, they cannot slip to the lower side due to the shape of. the implant ends, preventing the perforation of the tegument and the local secondary infection, or, to the bone inside both situations causing the damage of the mounting and ' the fracture loss- of stabilization; ■ . . - the mounted long, flexible implants which are spatially super¬ posed in the lower side of the- medullary channel and parallel in the femoral neck have the advantage of stabilizing the inαtable fractures of the greater troohanter, the tensions which tend to displace the fracture being taken over through... the implants and spread over tha two side faces of the femur lower side as well as the slipping toward the lower side, preventing the perforation of tha tegument and the local secondary infection; - the combined use. of the short and long implants in the double - gap fractures of the femoral neck of any other part of the femur have the advantage of preserving the flexibility of the mounting in the fracture areas and all over the bone line when performing fast surgi¬ cal operations which are less, injuring- for. the patient; - they enable simple and easy manoeuvres for the introduction/ extraction of -the flexible implants from/ in the bone; - they have a simple construction and a great reliability; - they may be easily cleaned and sterilized and do not have areas of collecting organic remnants resulted during the operation; - they may be handled with the same multi-functional handle; . . - with a small number of instruments and relatively small dimen¬ sions, one ensures the achievement of the osteosynthesis of a wide fracture range; . - the handling, transpor t and pre para tion for opera tion may be made wi thout difficul ty. C L A I M S 1. lexible implants .for the stable flexible osteosynthesis of the femur and tibia fractures, which, under the conditions of the fβmαral fracture placing in the e iodiaphysary and femoral neck are, two of them, introduced through the medullary channel in the femur, condy-. lian or overcondylian, outside or inside placed, both being so curv¬ ed as to be superposed in -the space in two points, in the lower and upper parts of the medullary channel,, another, one is introduced ac¬ cording to a direction-parallel tά the upper edge of the femoral neck coming in its immediate vicinity, and the last one is placed in the lower channel of he. femoral neck, following a direction parallel and very hear to the edge of -the femoral neck, under those* of the femur, fracture placing in the femoral neck and subtrochanterian zones, one is introduced through the medullar .channel into the femur, condylian or overcondylian, outside or inside, having finally a curved shaped, another one is introduced, according to a direction parallel to the upper edge of the femoral neck, coming to its immediate vicihity, and the last one is placed in the lower quadrant of .the femoral neck, following a direction parallel and very near to the edge of the femo¬ ral neck, under those of femur fraoture placing in the mediodiaphy¬ sary, subtrochanterian, super and intercondylian zones, two of them are introduced through. the medullary channel into the femur, condy¬ lian or supercondylian, outside or inside,-both being so curved as to finally superpose in the space in two paints, in- tha lower and upper parts of the medullary channel and under those of the femur fracture placing only in the zone of the greater troohanter, two of the implants are introduced through. the medullary channel into the femur, condylian and supercondylian, outside or inside, both being so curved as to finally superpose spatially in the lower part, in- only one point,, after which they follow some parallel lines in the medullary channel, under those, of fraoture placing only in the zone • of the femoral neck, one of them is introduced according to a direc¬ tion parallel to the upper edge of the femoral neck coming in its vicinity, and another ona is placed in the. lower quadrant of the. femoral neck, following a direction parallel and very near to the- edge of the femoral neck and finally under those of tibia fracture placing in the diaphysary areas, two of the implants are introduced

Claims: *. - 28 - . through.. he medullary channel. from, the bottom to the top, starting from the supβr alleolar level, on either side of tibia, both being so curved as to be finally superposed in space,, in- two points, in.. the lower and upper parts of the medullary channel, c h a r a c t e r i. z e d b y t h e f a c -t t h.a. t, in order to achieve osteosyn thes s stabilizing the fracture ' gaps, enabling the patients' recovery in a short period, they are made of. short rods (1 and 2), one upper and one lower, .used in the osteosynthesis for the fractures of the fβmo-sL neck, as well as of a long rod (3) » used as such or with another long rod (30 and with tha sho t rods .(1 and.2) . in case of stabilizing .the double gap. fracture-s: crossing the femur neok and every part of the femur placed ' under the greater troohanter, or only with another, long rod (3) for stabilizing the diaphysary fractures of tibia and femur and, respectively, the super and inter condylian fractures of femur, the upper short rod (1) .being made up of an upper, αctiv. par.t (a) having a shaped end (b) , continued .with an upper, upward curved part (c) , after which there follows- a- long, straight part (d) , connected through a lower, curved part (β), downward directed, with a part (f ) , inclined as against a horizontal direction, ended with a lug (g) , the lower short rod (2) being formed of an upper, short, straight active part (j) with a shaped end (k) , connected .through an upper, downward .. curved part (1) with a long, downward curved part (m), in turn connec¬ ted by means of interme iary, and lower parts (n and o) , inward and respectively outward connected, with a part (p) ' inclined as against a horizontal direction, ended with a lug (q) , the long rod (3) being made up of a long, straight part (t), ended with a shaped end (u) , promoting the penetration and the directing in the bone (9), connected through lower and upper parts, (v and w) , inward and respectively out-, ward curved* with a flat, narrow part (x) and a flat or inward-curve , widened end part (y), so dimensioned, that it stops, the complete pene¬ tration of- the long rod : -*.C3) in. the medullary channel. 2.1mplants according to. claim 1, c h a r a c t e r i z e d b y t.h e f a c t that the upper, short. od (1) has in its lower down¬ ward curved part (a) a- radius of curvature which is equal to that of the upper ,- upwar - curved part (c) between 1 and 3 cm, and the axis of the upper active part (a) is parallel to the axis of the part ( ) , inclined. as against a horizontal direction and forms with the axis of the long, straight part.(d) an angle, of 4o°.. 0 7o°, the long, straight part (d)- having a lower, flat surface (h) delimited by an upper sur¬ face with, the shape of a truncated cone in cross-rsection, with tha small base placed to the flat, lower surface (h) . 3«Implants according to. claim 1, c h a r a c t e r i z e d b y t h e f a c t that the lower, short..rod (2) has in its long, downward curved part (m7 a radius of curvature between 7 and lo cm, and the . radii of curvature of the intermediary and, respectively, lower, in¬ ward and, respectively, outward parts (n and o) are equal to each othe and hava values between 1/2 - 1/3 of the curvatura radius of the long, downward curved part (ra) , these radii being lower than the curvature radius of the upper, downward curved part (1), the plane in which ther is placed the lug (c) , which has a flat, lower surface (r) , delimited by a .surface (s) with, the shape of a truncated cone and ' he small base placed toward the lower . surface, (r) , forming with a horizontal plane an angle of 4o° ... 7o°, and the axis of. the upper, sho t, straight,, active part (j) forms an angle of o° ...7o° with a horizontal plane. 4. Implants, according to olaim 1, c h a r a c t e r i z e d b y t h e f a c t that the long rod (3) has the active 3haped end (u) provided with an upper inclination up to 45° and a lower inclination up to 3o or with some edges (a ) delimiting some faces converging to the longitudinal axis of the long. rod (3), the lower and, respectively upper parts (v and w) , inward and, respectively outward curved, having curvature radii with values between 3 end 5 mm, and the end part (y) is delimited by the flat, narrow part (x) , by some steps (z), inclined as against the longitudinal axis of. the long rod (3) forming with i.t an acute angle of 6o° ...75°, symmetrically disposed as against the- vertical axis, the lower and, respectively upper. parts (v and w) , in¬ ward and, respectively outward ourved being semi-flattened, the widths of these parts (v and w) being equal respectively to the width of the flat, narrow part (x) and to the diameter of the long, straight part (t). 5. Working instrumentation required for achieving an efficient sur¬ gical operation in the stable flexible osteosynthesis of the- fractures of femoral neck, tha fractures of the greater troohanter, the subtro¬ chanterian,. mediodiaphysary, super and intercondylian fractures of femur, as well as the diaphysary fractures of tibia, when the stabiliz ing of the fracture gap is achieved by means of flexible implants according to claims 1 ... 4, which include a drill-shaped instrument for making, in the bone, a hole, whose axis is per endicular to the longitudinal axi3 of the bone, an instrument for achieving the adequa¬ te lines for tha introduction of a long rod in the bone, a working instrument for creating the impact force necessary for introducing any of the flexible rods in the bone, an instrument for stiffening the - 3o - long rods when whey are initially introduced in the bone, an instru¬ ment for the final hammering- of the long rod, an instrument for the final introduction or the lifting in view of withdrawal of the long rod in/from the bone, an instrument for hammering the short, upper and, respectively, lower rods, in view of their introduction in the bone, an instrument for changing the curvature, of the ends of the said short rods,, an instrument for extracting either the long rod or the short rods from the bone, an instrument for releasing the end parts of tha long rod from the. bone, an instrument for achieving an impact, in. view of extracting either the long rod or the short rods from the bone , c h a. r a c t e r i z e d b y t h e f a c t t h a in .-order, to stabilize the fracture gaps in the above said cases, whe making less injuring surgical operation, with minimal, blood lossed, for introducing both the long rod (3 through the hole (D X ) made in- the bone (9) and the said short, lower, rod (2), through another hole ( t vxx ) made in the bone (9), it is composed of an instrument (4) which is made up of a short body (c ) provided with an active end (d x ) with a frontal recess (e ) , delimited, at the bottom side by a. lower wall (f x ) , in which there-is madβ-an elongated seat (g x ) com- municating with a seat (h i ) made in a vertical wall (i i ) , sidewise delimiting the recess (e ) , the shapes of seats (g x and h ) being so selected as to allow the penetration of the lower, inward curved par (v) of the long rod (3) in the seat (h ) made in the wall (1 ) , whe a fragment of the long, s.traight part (t)-of the long rod (3) pene¬ trates in the elongated seat (g ), and the upper, outward curved par (w) of .the respective rod (3) is placed in the frontal recess (e j opposite to which, the-body (c ) having a circular collar (j ) con¬ nected, through a shaped part (k ) , with, a short rod (1 ), the latte being , provided with a central circular seat, (m ) , a pierced hole (n being made in the body (o ), its diameter being so selected as to enable the introduction of. tha long, straight, part (t) of the long rod (3), through it, in view of correcting the curvature, for. which the rod (3) is also introduced through another pierced hole (n ) „ drilled in a long body (g ) of an instrument (7) for lifting the long rod (3) in view of extracting from the bone (9) , the body (g xi ) being ended with an. active , upward curved and (h xi ) , in which an uppe recess (i ) is. made, being so shaped as to enable the penetration of the straight, long part (t) of the long rod (3), near the lower, inward curved part (v) of the long rod (3), opposite to the upper recess (i xi ) , the body (g 1 ) having a circular collar ( j xi ) , connect ed through a shaped part (k 11 ) W ith a short rod (l i ) in which thers is made a circular hole- (m xx ).,- for the initial introduction of the vii upper, short rod (1) over a. depth of 3...4 cm, in the hole (r )mad in the bone (9), using, an- ins.t umβnt (C) composed of a body (25) to which there are fastened an anvil. (26) and a support (27), the anvil (26). having a short, cylindrical pa t (1 ) , provided with a circula recess (m v ) and the support (27) has a threaded rod (n v ) , which may be respectively introduced/extracted in/from a L-shaped channel (0 ) communicating with the outside, made in a band (28), in the latter being also made a longitudinal channel (p v ) , ended with a circular part (q v ) , having a dimension higher., than that of an end (r ) delimi ing at the top side the circular recess (m v ) so that it is possible to displace the anvil (26) along the channel (p ), when band (20) is located in front of tha ecess. (m ) , the fastening of the band (28) to the support (27) being achieved by means of a nut (29) threaded o rod (n v ) , the body (25) having a straight part (s v ) to which there are fastened the anvil (26) and the support (27), delimited by a sh part (t v ), inclined as against ' the longitudinal, straight part (s v ) and, respectively by a- pa t (u 7 ) also inclined in tha some directio as the short part ( t v ) , as agains.t this axis, the inclined part (u v ) being connected through a circular collar (v v ) and a shaped part (w with a short rod (x v ) , provided with a circular seat (y v ) , the anvi (26) having an upper, straight part (z ) , connected with an incline vi part (a ), with the longitudinal axis parallel to. that of the shor part (t v ), provided with an upper, inclined surface (b ) , parallel to the longirudinal axis of the inclined part (u v ) , the band (20) baing provided with a shaped end part (c "7 ), having, in transversal section, the shape of a circle arc making with the longitudinal axi of the straight part (s v ) and angle lower by 5 ... lo° than the ang formed by. the part ( t ) with the same axis, tha final- positioning o the upper, short rod (1) in the neck (g v ) being made by means of an instrument (12), which is made- up of a short, body (m x ) , ended with a shaped end (n ) , inclined with an angle higher than 9o° as against the axis of body ( )-and with a diameter higher than the rest of the body (m ) , provided with a straight, frontal face (0 x ), in the shaped end (n ) baing. made an elongated saat (p delimited at the bottom side by a semi-circular wall (g iii ) so dime sioned that, when introducing the lug (g) of the upper, short rod (1) in it, its. part (f) inclined as against a horizontal direction remains outside, the body (ra -■ ) being connected through a circular collar (r xii ) and a shaped part (s ixi ) with a short rod (t xii ), pro vided with a circular seat (u xii ) , a handle (F) being used for the introduction or extraction of the. short and, respectively long rods (1, 2 and„3) in/from the bone (9), enabling during the operation, to fasten the instrument (4) for the introduction of the short, lower and respectively long rods (2 and 3)* of an instrument (5 ) for the final hammering of the said long. rod, of an instrument (6) for the final introduction or for lifting in view of extracting tha long rod (3) in/from the bone (9), of an instrument (7) for lifting in view of extracting the long rod (3), of an instrument (7) for achieving the adequate line of introducing the long rod .(3) in the bone (9), ' of an instrument, (lo) for extracting from the bone (9) any of the short and, respectively long rods (1, 2 and 3), of an instrument (11) for hammering the short rods (1 and 2), in view of their introducing in . the bone (9), of an instrument (12). for the final introduction of the short, upper rod (1), of an instrument (13) for modifying the curvatu re of tha ends of short rods (1 and 2), of an instrument (14) for extracting the long rod (3) from the bone (9) and, respectively, of an instrument (C) for introducing the short, upper rod (1) over a depth of 3-4 cm, the handle (F) being able to be rotated during thβ- operation for positioning the rod (3) in the medullary channel or the lower, short rod (2) in the neck (q v ) , by means of an instrument (17) , which is made up of a long, cylindrical body (h) , ended respec¬ tively with a posterior, oylindrical collar (i v ) and a fore, cylin¬ drical collar ( j v ) , having a diameter lower than that of collar (i v ), frontally provided with a circular recess (k v ) , so shaped as to enabl the introduction of the intermediary part (n) of the lower, short rod (2) or the lowe , .inward curved part (v) of the long rod (3) * 6.1ns trumαntation, according, to claim 5, c h a r. a c t e r i z ~- β d . b y t h e . f a c t, that the handle (F) is formed of an outside shaped body (52), provided with a longitudinal ' window (x vx ) ended with a flared part (y vx ) , the window (x ) being made in a middle part (z vx ) of the body (53), which is continued respectively with a posterior anvil (a vx ) and an active, cylindrical end (b v ) in whic there is made a cylindrical,, longitudinal channel (c vxxx ), continued with a recess (d ) delimited by a shaped wall (e v ) communicating with the outside through a cylindrical seat (f v ) , in. a plane per¬ pendicular .to the plane in which there is placed channel (c x ) , in whose active end (b v ) there is made a cylindrical channel (g V ) , having the longitudinal axis placed under that of tha longitudinal channel (c ) , communicating with the outside through recesses (h • and-i v ) opposed - placed, in which there is placed a lock (54), pro¬ vided with a fore, thin part (j ii ). and a thick, cylindrical, poste* rior part (k vxi ) in which there are made two circular channels (l vii and m vxx ) shifted placed as against the transversal axis of the lon¬ gitudinal, cylindrical channel (c v ). , the. fore part (j vx ) being mounted undar the action of the force s.tored in a spring (55), whic is suppoerted respec tively.on a. shoulder (n ) limiting the recess (i vii ) and on a fore stopper (56), mounted in connection with tha lo vii (54), having the .possibility- to. isplace in the recess (i ), whic enables to bring, as tha case may be, -the thin part (j v ) in front of the cylindrical, longitudinal channel (c vii ) in the other racess (h xxx ) a posterior stopper (57) being placed, with the possibility displace and forming a single piece with the lock. (54) , the cylindr cal channel- (g ) communicating with a. channel (e v ) placed in the same place with channel (g ) and perpendicular to the latter, in which, under the action of . a force -stored in a spring (58), a ball (59) is placed which may penetrate, depending on the position of lo (54), in one of the channels (1 x ...and m ),. the maintaining of th spring (58) in tha last said channel (o ) being achieved by means of a screw (6o) , the rotation of handle (F) around the longitudinal axis, depending on needs, when- introducing tha short, lower rod (2) or tha long rod (3) in the bona (9) being made by means of the said instrument (17), for the final introduction of the antionad short rods (2 and.3) into the bone (9), reason for which it is introduced in the flared part (y vx ) of the longitudinal window (x vx ) , all inst ments (4, 5, 6, 7, 0, lo, 11, 12, 13, 14 and C) , which are manoeuvr by means of handle (F) , having. each one of the collars (j i , t i , b i .i j xi , t xi , z ix , i ixi , r xi * a 111 , ϊ 111 and v ) , connected through one + thι . _e. s r -ha--pr.e„ A d p ,-a„r„t-.3„- (,k,! , , u,i. , c Λ ii, k ,,ii, „uii, a „iii , j jiii -, α "iii » a iv» s iv and w v ), with one of tha short-rods (I 1 , v , d ix , l ix , v ix ,. b ixi ,k i .t xx , b xv , t xv and x v ) , provided with one of the circular seats (m, a 11 , m xi , w lx , c xii , l xii , u iix and y v ) which .enables their locking by means of lock (54). .. • .Instrumentation according to claims 5 and 6 c h a r a c t β - r i z e d b y t h e f a c t .that for guiding the long rod (3) dur its initial introduction in .tha bona (9) ,• in other constructive ver sion, it includes an instrument (AΪ, fastened in handle (F) , made u of a long body (18), to which there is fastened a jaw (2o), by mean of a nut (19), the body (18) having a long part (d ) , connected through a circular collar (a ) and a. shaped part (f ) with a shor rod (g v ), provided with a circular 3βat (b ) , opposed to the col¬ lar (a lv ), the body (d iv ) being provided with a jaw (i iv ) provided on the frontal surface ( j v ) , with a semi-circular recess (k ) h∑-ving the longitudinal axis parallel to that of the long part (d iv in the extension of jaw (i ), a short rod. -.1 v ) outside threaded, and a longitudinal axis in the extension of the long part (d ), serving for guiding the jaw (2o), reason for which the latter has pierced hole (m ), through which the rod (e penetrates, a reces (n ) having the same shape as the semi-ciroulax receo3 (k ), bein positioned, in front of the recess (k iv ) of the jaw (i ), ba faste ing jaw (2o), reason for which the latter has a pierced hole (m v ) through which the rod (e ) penetrates, a recess (n v ) having the same shape as the semi-circular recess (k ) being positioned in front of the recess (k ) of the jaw (i ), by fastening jaw (2o) with nut (19). 8. Instrumentation according to claims 5, 6, and 7 c h a r a c t e r i z e d b y t h e f a o t that, for modifying the curvatu res from the lower, downward curved and, respectively, lower, out¬ ward curved parts (e and o) of the short, upper and, respectively lower rods (1 and 2) and from the straight, long part (t) of the long rod (3), depending on the bone shape (9), in other constructi ve version, it includes an instrument (D),- composed of _*. sleeve (3 wit sidewise flared edges, jointed by moa s of a short bolt (31) with a U-ohnped support (32), in which there are made respectively a recess (d ) and some longitudinal, marginal slits (e and f v ) separated from the recess (d ) by a wall (g vx ), a stopper (33) bei g fastened to the support (32) and coming in contact with two posterior, short arms (34), jointed in turn by means of a short holt (35) with two fore, short arms (36), the latter boing jointed through a bolt (37) to the support (32), in front of the recess (d vx ) being also jointed through .this bolt (37) a long, sidewise flattened part (38), in which there are made, along its longitudin axis, some pierced holes (h v ), the long part (38) having an outer circular collar (i ), serving for limiting the displacing of a sleeve (39), along it, as a result of the contact between the col¬ lar (i v ) and a lower step (j ) of the sleeve (39) which is side- wise cut out, so that it may come in contact sidewise with part (3 in the sleeve being £39) being made some pierced holes (k ) with the some diameter and the same distance between them as those of the othei holes (h ), except these latter .-.aid holes (k ) which are placed along the longitudinal axis of sleeve (39), in the lat¬ ter being also provided two holes (m ) disposed on either side of the longitudinal axis, near a fore inclined end (1 V1 ) the sleeve (39) being able to be closed with a plate (4o), in which there are mounted thick bolts (41), which may penetrate through the holes (h and k ) and, respectively, thin bolts (42) which may pene- trate in the .wo holes (m ), in view of achieving a more accentua ed curvature of the Ions part (t) of the long rod (3), the poste¬ rior arms (34) being provided with sone upper recesses (a ), com¬ municating with the outside, placed at the 3ame level when the res pective arms (34) are brought in working position, in which the lo rod (3) is introduced, the respective rod in thio position being p ced under the long part (38) and the sleeve (39) and, implicitly, the part (38), the long rod being curved, the modification of the curvatures (e and o) of the short rod (1 and 2), according to the shape of the bone (9), being made by means of sleeve (39) and bolt (41, 42) between which there are introduced the short rod3 (1 and a3 the case may be, with the maintaining of part (38) in working p sition, a bolt (43) being mounted when not working, in the holes (o vl ), drilled in the support (32) and the lower ends (p vx ) of the arms (34) being introduced in the slits (e and ) and finally, for transport and sterilization requirements, the sleeve (39) and the arms (34) and, respectively, the long part (38) are rotated around bolt (37), so as to bring them in the perimeter delimited by the s port (32), position in which they are placed under the wall (g v ), the 3leeve (39) being revolved around the bolt (31), being locked the support (Jo), the bolta (31, 35 and 37) being secured agaitøt loosening nuts (44, 45 and 46), in order to prevent the displaceme of the component parts during the transport, namely the short arms (36) and the part (38), two spacing pieces (47) being provided.

Inventors: ALEXANDRU ION BOGDAN MANOF, ANDREI FIRICA, DRAGOS GHEORGHIU, ALEXANDRU, ION, BOGDAN, MANOF, ANDREI, FIRICA, DRAGOS, GHEORGHIU
Applicants: INT TECH MED INTREPRINDEREA
Application year: 1986
Main classification: A61B17
IPC codes: A61B17