CN203059829U

CN203059829U - Far end nail hole aiming and monitoring instrument for intramedullary nail with lock

Info

Publication number: CN203059829U
Application number: CN 201320052474
Authority: CN
Inventors: 李晓林; 孙德修
Original assignee: 孙德修
Current assignee: Shandong Hangwei Orthopedics Medical Instrument Co Ltd
Priority date: 2013-01-22
Filing date: 2013-01-22
Publication date: 2013-07-17
Anticipated expiration: 2023-01-22

Abstract

The utility model discloses a far end nail hole aiming and monitoring instrument for an intramedullary nail with a lock, and belongs to the technical field of orthopedic medical apparatuses. The far end nail hole aiming and monitoring instrument for the intramedullary nail with the lock comprises a magnetic aimer, wherein an aiming indicator is installed inside a positioning tube of the magnetic aimer through a hinge shaft; a magnet is installed at the front end of the aiming indicator; an electronic monitor is installed at the back end of the magnetic aimer; a forked base with a notch in the middle is installed at the upper end of a shell of the electronic monitor; a photoswitch for controlling the electronic monitor to issue an alarm is installed inside the forked base; and the back end of the aiming indicator stretches into the notch of the forked base. After aiming positioning, the far end nail hole aiming and monitoring instrument for the intramedullary nail with the lock can perform acousto-optic prompt, is more convenient to operate, and can monitor the whole drilling process in real time to prevent a drill bit from deviating from a nail hole, so that the surgical time is shortened and pain of a patient can be reduced.

Description

Intramedullary nail with lock far-end nail hole aiming monitor controller

Technical field

This utility model relates to clinical synthetism technical field of medical instruments, particularly relates to a kind of auxiliary instrument that the intra medullary nail far-end pinning is installed when implanting intramedullary pin in bone surgery.

Background technology

At present, when treatment tubulose fracture patient, technique for fixing is used widely clinically in the intramedullary nail with lock, and the installation of intra medullary nail far-end pinning is this technology key link, and the order of accuarcy of location, intra medullary nail far-end nail hole site directly influences operating difficulty and operation quality.The intra medullary nail far-end of using always is clinically followed closely aiming location, hole site and is mainly contained following several mode now: the one, and lasting by X line image documentation equipment searching position, hole in the operation, this technology not only requires high to doctor's operating experience, and the X-ray line can produce a large amount of radiation, and medical worker and patient are damaged.The 2nd, the spacing point technique of employing locating rod, relatively typically the patent No. that designs as the inventor is 02267978.2 " intramedullary nail with lock far-end nail hole positioning device ", its construction features is to install a stopping means that limits the intramedullary pin swing additional at locating rod, though played certain aiming effect, but need increase a boring at osseous tissue, not only operating procedure is many, and returning the patient increases extra wound.The 3rd, adopt magnetic force aiming location technology, relatively typically the patent No. as inventor's design is 200420039024.X " intramedullary nail with lock far-end nail hole aiming automatic indicator ", its construction features is that magnetic force aiming indicator is installed in the locating hole on adjustable locating rod, cooperate the aiming location with the probe that has Magnet in being inserted into intramedullary pin, this technology has improved the accuracy of lock intramedullary nail far-end nail hole aiming, but its deficiency is to need to remember pointer position in advance before the art, need observe pointer position at any time in the operating process, thereby it is very inconvenient, also go wrong easily, boring procedure can not be monitored in real time, the drill bit displacement can not in time be found, causes the boring failure easily.The patent No. is that 200910025314.6 " medical magnetic navigation spotter " and the patent No. are that 201020670499.4 " electronic navigation formula intra medullary nail far-end sighting device " is though realized the electronics demonstration, and can carry out real-time monitoring in the operating process, but its complex structure, the cost of manufacture height is not easy to clinical expansion and uses.

Summary of the invention

The purpose of this utility model is exactly the defective that will overcome prior art, provides a kind of simple in structure, flexible and convenient operation, aiming accurate positioning and the intramedullary nail with lock far-end nail hole aiming monitor controller of can the carrying out in the drilling operation process monitoring in real time.

For achieving the above object, monitor controller is aimed at by the following technical solutions in this utility model intramedullary nail with lock far-end nail hole: it comprises a magnetic force sight, the magnetic force sight has the positioning pipe of front end closed rear end opening, by hinge the aiming pointer is installed in the positioning pipe, the front end of aiming pointer is equipped with Magnet, in magnetic force sight rear end electronic monitor is installed, the forked standard that has breach in the middle of the upper end of electronic monitor housing is equipped with, the light-operated switch of controlling the electronic monitor sound and light alarm for signal input is installed in forked standard, and the rear end of aiming pointer is stretched in the breach of forked standard.

Above-mentioned intramedullary nail with lock far-end nail hole aiming monitor controller, one side of its electronic monitor housing fixedly has the adjusting bearing, have the sliding panel that is inserted on the adjusting bearing in the rear end of positioning pipe, be equipped with at the adjusting bearing and can promote the adjusting bolt that sliding panel moves up and down.Housing at electronic monitor is equipped with display lamp and/or buzzer and on and off switch.

Above-mentioned intramedullary nail with lock far-end nail hole aiming monitor controller, its circuit part that is installed in the electronic monitor in the housing comprises a 89T2051 single-chip microcomputer and the photelectric receiver for detection of the pointer position that is connected with this single-chip microcomputer, the oscillating circuit that clock signal is provided, reset circuit and light emitting diode and buzzer in order to report to the police.

This utility model passes through improvements over the prior art, avoided the radiation of X-ray, aiming can be carried out acousto-optic hint behind the location, does not have the collimation error, and is more convenient to operate, improved pointing accuracy, and can monitor in real time whole boring procedure, avoid drill bit to depart from the nail hole site, make since aiming degree not the Gao Erxu probability of repeatedly holing be reduced to zero, thereby the shortening operating time alleviates patient's misery.And simple in structure, cost of manufacture is low, is particularly suitable for can doing in China hospital's penetration and promotion of fracture fixation operation.

Description of drawings

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

Fig. 2 is the longitudinal sectional view of magnetic force sight;

Fig. 3 is the right view of Fig. 1;

Fig. 4 is the circuit theory diagrams of electronic monitor;

Fig. 5 is user mode reference diagram of the present utility model;

Fig. 6 is the vertical view of Fig. 5.

The specific embodiment

In Fig. 1-4 illustrated embodiment, this utility model comprises a magnetic force sight 1, this magnetic force sight 1 has the columnar positioning pipe 19 that a non-magnet_conductible material is made, positioning pipe front end closed rear end opening, by hinge 10 the aiming pointer 2 that can swing is installed in the positioning pipe, the front end of aiming pointer 2 is equipped with Magnet 11, and this Magnet attracts mutually with the Magnet 18 that is inserted into probe 17 front ends in the intramedullary pin 16.Positioning pipe 19 rear ends at the magnetic force sight are equipped with an electronic monitor 5, the forked standard 3 that has breach (that is constituted by two parallel poles) in the middle of the housing of electronic monitor 5 upper end is equipped with, the light-operated switch that 5 promptings of control electronic monitor are reported to the police is installed on two poles of forked standard 3 accordingly, and the rear end of aiming pointer 2 is stretched in the middle of two poles of forked standard 3.Side at electronic monitor 5 housings fixedly has the bearing 9 of adjusting, have the sliding panel 8 that is inserted on the adjusting bearing 9 in the rear end of positioning pipe 19, be equipped with and can promote the adjusting bolt 7 that sliding panel 8 moves up and down regulating bearing 9, sliding panel 8 is provided with set bolt 4.At electronic monitor 5 housings display lamp 12 and buzzer 13 and on and off switch 6 are housed.The circuit formation that electronic monitor 5 is installed in the housing is seen Fig. 4, comprise a 89T2051 single-chip microcomputer, C1, C2, Y1 (crystal oscillator) constitute oscillating circuit, clock signal is provided, R1, C3 form reset circuit, and VT1 is photelectric receiver, for detection of the pointer position, LS1 is buzzer, and VD1, VD2 are light emitting diodes.Certainly single-chip microcomputer also can adopt as existing other products such as AT89C2051.

Operation principle of the present utility model is seen Fig. 5-6, the intramedullary nail with lock 16 that its operating process is used, probe 17 and handle 14 be installed in handle on adjustable locating rod 15 and inventor 200420039024.X patent in describe identical.During use, intramedullary pin 16 is installed in the sleeve pipe of handle 14 lower ends, plug-in mounting probe 17 in intramedullary pin 16, magnetic force sight 1 are inserted in the locating hole on the adjustable locating rod 15.At first determined bore position according to patient's fracture situation, carry out in-vitro simulated then, adjusting locating rod 15 drive magnetic force sights 1 moves, to the position that tat probe 17 front end Magnet 18 and the front end Magnet 11 of aiming pointer 2 are inhaled mutually, fix adjustable locating rod 15, open the on and off switch 6 of electronic monitor 5 this moment, regulate bolt 7 by rotating, adjust light-operated switch light is blocked in aiming pointer 2 ends between two poles of forked standard 3 position, this moment, the photelectric receiver of electronic monitor 5 had input signal, the prompting of buzzer 13 sounding is reported to the police, display lamp 12 works asynchronously with buzzer (when aiming pointer 2 end deflections can not be blocked light-operated switch light, photelectric receiver does not have input signal, buzzer 13 is sounding not), close switch then, the two is fixed with magnetic force sight 1 and electronic monitor 5 by set bolt 4, uses in order in the art.In the art, insert in the process of medullary cavity at intramedullary pin, because stressed possibility deformation displacement changes preoperative state, open switch 6 this moment, move by adjusting locating rod 15 drive magnetic force sights 1, send acousto-optic hint up to buzzer 13 and display lamp 12, drill bit aiming nail hole site is described, if be subjected to displacement in the boring procedure, then acousto-optic hint disappears, and need readjust locating rod, thereby realizes boring monitoring in real time.Certainly, can on forked standard 3, increase by two groups of light-operated switches (or increase adorn two groups of forked standards) again, with the offset direction of prompting aiming pointer 2, thus rapid adjustment aiming more.

Claims

1. monitor controller is aimed in an intramedullary nail with lock far-end nail hole, comprise magnetic force sight (1), magnetic force sight (1) has the positioning pipe (19) of front end closed rear end opening, by hinge (10) aiming pointer (2) is installed in the positioning pipe (19), the front end of aiming pointer (2) is equipped with Magnet (11), it is characterized in that: in magnetic force sight (1) rear end electronic monitor (5) is installed, the forked standard (3) that has breach in the middle of the upper end of electronic monitor (5) housing is equipped with, the light-operated switch that control electronic monitor (5) is reported to the police is installed in forked standard (3), and the rear end of aiming pointer (2) is stretched in the breach of forked standard (3).

2. intramedullary nail with lock far-end according to claim 1 is followed closely hole aiming monitor controller, it is characterized in that in a side of electronic monitor (5) housing adjusting bearing (9) being arranged fixedly, have the sliding panel (8) that is inserted on the adjusting bearing (9) in the rear end of positioning pipe (19), be equipped with at adjusting bearing (9) and can promote the adjusting bolt (7) that sliding panel (8) moves up and down.

3. intramedullary nail with lock far-end nail hole aiming monitor controller according to claim 1 is characterized in that at electronic monitor (5) housing display lamp (12) and buzzer (13) and on and off switch (6) being housed.

4. intramedullary nail with lock far-end nail hole aiming monitor controller according to claim 1 is characterized in that the circuit part that electronic monitor (5) is installed in the housing comprises a 89T2051 single-chip microcomputer and the photelectric receiver for detection of the pointer position that is connected with single-chip microcomputer, the oscillating circuit that clock signal is provided, reset circuit and light emitting diode and/or buzzer in order to report to the police.