CN2449669Y - Tibial spreader - Google Patents

Abstract

The utility model relates to a tibial extender for convenient utilization for a patient. The utility model comprises an outer fixing rack, penetrating needles fixedly connected with the outer fixing rack, an intramedullary nail and an inner nail, wherein, the outer fixing rack comprises two extension rods, wherein, the extension rod comprises a lower part sleeve, a middle part screw rod and an upper part sleeve rod, wherein, the lower end of the screw rod is positioned in the sleeve and is connected in a relative rotating mode with the sleeve. The upper end of the screw rod is connected in a thread mode with the lower end of the sleeve rod. The lower end of the inner nail is positioned in and is movably connected with an inner nail hole of the upper end of the intramedullary nail. A remote end penetrating needle passes through a needle penetrating hole of the upper end of the inner nail. A near end penetrating needle passes through a penetrating needle lower hole of the lower part of the intramedullary nail.

Description

The tibia lengthening device

This utility model relates to medical apparatus and instruments, relates in particular to the tibia lengthening medical apparatus and instruments.

Tibia lengthening device commonly used comprises external fixer, threads a needle, external fixer comprises 4 semicircular ring and 3 montants of horizontal positioned from top to bottom, each montant is fixedlyed connected with 4 semicircular ring respectively, makes 4 semicircular ring relative fixed, and each semicircular ring can be passed threading a needle of bone and fixedlys connected with 2 respectively.When needs prolong tibia, make fracture of tibia earlier, the tibia lengthening device is installed on the tibia, make fracture between upper and lower two semicircular ring of external fixer, to thread a needle and pass tibia, fixedly connected with the tibia lengthening device in the two ends of threading a needle.This kind tibia lengthening device is required fixedly threads a needle morely, can not remove external fixer before the knitting, and long, patient of tape holder time uses inconvenience.

The purpose of this utility model provides a kind of patient tibia lengthening device easy to use.

For achieving the above object, the technical scheme that this utility model is taked is: a kind of tibia lengthening device comprises external fixer, threading a needle of fixedlying connected with external fixer; Its characteristics are: also comprise intramedullary pin, interior nail; External fixer comprises two extension rods, and extension rod comprises the sleeve of bottom, the screw rod at middle part, the loop bar on top; The screw rod lower end is positioned at sleeve upper end tube and becomes can be rotatably connected relatively with it, and the screw rod upper end becomes to be threaded with the loop bar lower end; Thread a needle and comprise that near-end is threaded a needle and far-end is threaded a needle; In nail on end and have a hole of threading a needle; The intramedullary pin upper end has and the corresponding interior nail of interior nail hole; In the nail lower end be positioned at follow closely the hole and with its flexible connection; The intramedullary pin bottom has the hole of threading a needle down, and near-end is threaded a needle and passed the hole of threading a needle down on the intramedullary pin, and far-end nails on the hole of threading a needle in threading a needle and passing, and fixedlys connected with two extension rod upper and lower ends respectively in two two ends of threading a needle.

Because external fixer comprises two extension rods in this utility model, screw rod in the rotation extension rod can make extension rod prolong, and makes treatment convenient; Because this utility model has two and threads a needle, so cicatrix is few, cosmetic result is good; Owing to have intramedullary pin in this utility model, intramedullary pin can be kept para-position to tibia effectively to line; Because the nail lower end is arranged in the nail hole of intramedullary pin and flexibly connects with the nail hole in this utility model, nail promptly is unlikely to deviate from the nail hole in intramedullary pin in therefore making, intramedullary pin is prolonged as required.

The utility model will be further described below in conjunction with accompanying drawing.

Fig. 1 is a kind of front view of the present utility model;

Fig. 2 is the front view of interior nail among Fig. 1;

Fig. 3 is the front view of intramedullary pin among Fig. 1.

A kind of tibia lengthening device as shown in Figure 1, comprises external fixer 5, threads a needle, intramedullary pin 1, interior nail 9, interior oncomelania nail 11, intramedullary pin screw 12; External fixer comprises two extension rods 6; Extension rod comprises the sleeve 3 of bottom, the screw rod 4 at middle part, the loop bar 7 on top; The loop bar lower end has internal thread hole; Screw rod 4 lower ends are positioned at sleeve 3 upper end tubes and become can be rotatably connected relatively with it, and screw rod 4 upper ends have external screw thread and become to be threaded with loop bar 7 lower end internal thread holes; Thread a needle comprise near-end thread a needle 2 and far-end thread a needle 8; As shown in Figure 2, in nail on the end have the hole 15 of threading a needle, the lower end is threaded hole 16; As shown in Figure 3, intramedullary pin 1 upper end has and the corresponding interior nail of interior nail hole, adopt common structure that interior nail lower end is positioned at and follow closely the hole and be flexible connection with it, the structure that adopts in the present embodiment is: with have the chute 10 that communicates with interior nail hole on the corresponding intramedullary pin sidewall in interior nail hole, interior oncomelania is followed closely 11 bottoms and is passed chute 10 and be threaded with the interior respective threads hole 16 that nails on, the nail lower end is positioned at the nail hole and is flexible connection with it in making, and in making can upper and lowerly slide in interior nail hole in the nail lower end; Have on the intramedullary pin of chute 10 belows and intramedullary pin screw 12 corresponding screwing through hole 13, intramedullary pin screw 12 bottoms are passed screwing through hole 13 and are become to flexibly connect with it; The intramedullary pin bottom has the hole 14 of threading a needle down, and near-end is threaded a needle and 2 passed the hole 14 of threading a needle down on the intramedullary pin, fixedlys connected with two extension rods, 6 upper and lower ends respectively in far-end 8 two ends of threading a needle, hole 15, two of threading a needle on the nail 9 in passing of threading a needle.

Interior nail 9 is inserted in the interior nail hole of intramedullary pins 1, and interior oncomelania is followed closely 11 bottoms and is passed chute 10 and be threaded with interior nail 9 upper screwed holes 16, and interior nail can not be deviate from from the interior nail hole of intramedullary pin, and interior nail can upper and lowerly slide in interior nail hole; During operation, to the pulp cavity internal drilling, the intramedullary pin that has interior nail is inserted in this hole certainly from tibial tubercle top; Under sight helps, lock near-end and thread a needle 2, under C shape arm perspective, lock far-end and thread a needle 8; With common method being fixedlyed connected in two extension rods, 6 lower ends respectively with the near-end two ends of threading a needle, fixedlys connected with the far-end two ends of threading a needle respectively in two extension rods, 6 upper ends; This utility model is fixedlyed connected with tibia; When tibia length behind Len req, pass screwing through hole 13 with intramedullary pin screw 12, intramedullary pin is fixedlyed connected with tibia, at this moment just can remove external fixer 5 and far-end and thread a needle 8, the near-end that stretches out the shank both sides threaded a needle 2 block, so shortened the time of carrying external fixer greatly, remove external fixer after patient activity convenient; In addition, after the preliminary healing of fracture, can remove the intramedullary pin screw, make the fracture end pressurization, help the ossified of new bone.

Claims (3)

1, a kind of tibia lengthening device comprises external fixer (5), thread a needle (2,8) of fixedlying connected with external fixer; It is characterized in that: also comprise intramedullary pin (1), interior nail (9); External fixer comprises two extension rods (6), and extension rod comprises the sleeve (3) of bottom, the screw rod (4) at middle part, the loop bar (7) on top; The screw rod lower end is positioned at sleeve upper end tube and becomes can be rotatably connected relatively with it, and the screw rod upper end becomes to be threaded with the loop bar lower end; Thread a needle and comprise that near-end is threaded a needle (2) and far-end is threaded a needle (8); In nail on end and have a hole of threading a needle (15); Intramedullary pin (1) upper end has and the corresponding interior nail of interior nail hole; In the nail lower end be positioned at follow closely the hole and with its flexible connection; The intramedullary pin bottom has the hole of threading a needle down (14), near-end thread a needle (2) pass the hole (14) of threading a needle down on the intramedullary pin, far-end thread a needle (8) pass the hole (15) of threading a needle on the interior nail (9), fixedly connected with two extension rods (6) upper and lower end respectively in two two ends of threading a needle.

2, tibia lengthening device according to claim 1 is characterized in that: it also comprises intramedullary pin screw (12); Have on the described intramedullary pin (1) and the corresponding screwing through hole of intramedullary pin screw (13), intramedullary pin screw (12) bottom is passed screwing through hole and is become to flexibly connect with it.

3, tibia lengthening device according to claim 1 and 2 is characterized in that: oncomelania nail (11) in it also comprises; Described interior nail (9) lower end has with interior oncomelania follows closely corresponding screwed hole (16); Have on the described intramedullary pin sidewall with described in the nail hole to chute (10) corresponding and that communicate, interior oncomelania is followed closely (11) bottom and is passed chute (10) and be threaded with the interior screwed hole (16) that nails on, can upper and lowerly slide in interior nail hole in interior nail lower end.

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