CN2681693Y

CN2681693Y - Automatic indicator for aiming far end pinhole of intramedullary nail with block

Info

Publication number: CN2681693Y
Application number: CNU200420039024XU
Authority: CN
Inventors: 孙德修; 王建然
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-03-06
Filing date: 2004-03-06
Publication date: 2005-03-02
Anticipated expiration: 2014-03-06

Abstract

The utility model relates to an automatic indicator for aiming a far end pinhole of an intramedullary nail with a lock, comprising a handle, an adjustable locating rod and an intramedullary nail. A magnetic force aiming indicator is inserted into the one position hole of the adjustable locating rod, an aiming rod whose lower end is provided with a piece of magnet is hinged in the locating pipe of the magnetic force aiming indicator, the aiming rod and the locating pipe are provided with pinhole position indicators, a probe is inserted into the intramedullary nail, and the front end of the probe is also equipped with a piece of magnet. The automatic indicator for aiming the far end pinhole of the intramedullary nail with the lock of the utility model utilizes the two pieces of magnet that are mutually attracted to aim and position, has simple and light structure, very convenient operation, accurate location, can greatly reduce the operation difficulty, and shortens the operation time.

Description

Intramedullary nail with lock far-end nail hole aiming automatic indicator

Affiliated technical field

This utility model relates to the orthopedic medical device technical field, particularly relates to a kind of intramedullary nail with lock far-end nail hole aiming positioner.

Background technology

At present, intramedullary nail with lock internal fixation technology is widely used clinically, but the location in intra medullary nail far-end nail hole is the technical problem that is difficult to operation in the operation, fail to be solved well always, owing to the inaccurate phenomenon of boring failure that causes in location, nail hole happens occasionally, thereby the prolongation operating time increases patient's misery, influences surgical effect.For improving the boring accuracy, adopt the X-ray location usually, not only complicated operation also can cause radiation damage to patient and doctor.For addressing the above problem, application number is that 02158691.8 patent application has provided a kind of area of computer aided intra medullary nail far-end locking system, though can improve accurate positioning, complex structure, the manufacturing cost height is difficult to penetration and promotion.

Summary of the invention

The purpose of this utility model is exactly at the deficiencies in the prior art, provides a kind of intramedullary nail with lock far-end simple in structure, easy to operate, accurate positioning to follow closely the hole sighting device, thereby reduces operating difficulty, improves surgical effect.

For achieving the above object, the technical solution adopted in the utility model is: it comprises handle, be installed in the adjustable locating rod above the handle and be installed in intramedullary pin below the handle, its construction features is to be fitted with magnetic force aiming indicator in the locating hole on adjustable locating rod, this magnetic force aiming indicator has a positioning pipe, in positioning pipe, sighting bar is installed by hinge, the sighting bar lower end is fixed with Magnet, on sighting bar and positioning pipe, have nail hole site indicating device, be fitted with front end and can extend into the probe that far-end is followed closely the hole site in intramedullary pin, the front end of probe also is equipped with the Magnet that attracts mutually with the Magnet of sighting bar lower end.

Said nail hole site indicating device comprises pointer that is fixed on the sighting bar upper end and the graduated disc that cooperates with pointer that is fixed on the positioning pipe.Said positioning pipe lower end closed.The upwards bending and inserting in the aperture on the handle of the rear end of probe.Have scale or limited block is housed in the rear end of probe.

Owing to the utlity model has magnetic force aiming indicator, utilization is installed in two blocks of Magnet on sighting bar and probe aiming location that attracts each other, and indication automatically, need not locate with X-ray, operation is very easy, the aiming accurate positioning, can reduce operating difficulty greatly, shorten operating time, alleviate patient's misery, improve the operation quality.This utility model has saved the far-end locating rack that has height gauge in the existing product, and simple in structure light and handy, the doctor is easy to grasp operational approach, is adapted at hospitals at different levels and popularizes.

Description of drawings

Fig. 1 is a front view of the present utility model, shows its overall structure;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is magnetic force aiming indicator structure sketch map;

Fig. 4 is another embodiment magnetic force aiming indicator structure sketch map.

The specific embodiment

In the accompanying drawing illustrated embodiment, this utility model is by bolt 18 and a shape fixed mount 16 the adjustable locating rod 2 that front end has two locating holes 7 to be installed on handle 1, the adjustment bolt 17 of door shape fixed mount 16 both sides can be that hinge is adjusted locating rod 2 angles with bolt 18, and fastening by set bolt 15.In a locating hole of adjustable locating rod 2, be fitted with magnetic force aiming indicator, it has the positioning pipe 5 of lower end sealing, by hinge 8 sighting bar 9 is installed in the pipe, sighting bar 9 lower ends are fixed with flat thin magnet 10, sighting bar 9 upper ends have the pointer 6 of indication nail hole site, pointer 6 stretches out the upper end of positioning pipe 5, is fixed with in the upper end of positioning pipe 5 to have graduated graduated disc 19 (see figure 3)s on its that cooperates with pointer 6.Intramedullary pin 3 is installed on the stationary pipes 13 of handle 1 lower end, in intramedullary pin 3, be fitted with front end and extend into the probe 4 that far-end is followed closely 12 positions, hole, the front end of probe 4 also is equipped with the flat thin magnet 11 that attracts mutually with the flat thin magnet 10 of sighting bar 9 lower ends, the limited block 14 that limits its insertion depth is equipped with in the rear end of probe 4, the upwards bending and inserting in the aperture on the handle 1, of the rear end of probe 4 so that align its Magnet direction.Another embodiment of the present utility model is that the positioning pipe 5 and a mounting rod 20 of aiming indicator pegged graft, this mounting rod 20 is inserted in the locating hole 7 of adjustable locating rod 2, pointer 6 is to positioning pipe 5 one lateral bucklings and stretch out, and positioning pipe 5 sides are fixed with graduated disc 19 (see figure 4)s that cooperate with pointer 6.Certainly nail hole site indicating device also can adopt other versions.

During use, load onto probe in the intramedullary pin interpolation before the art, make its front end Magnet be positioned at place, second nail of far-end hole, the locking limited block, in the locating hole of the locating rod of correspondence, aim at indicator on the plug-in mounting, drill bushing and drill bit are inserted respectively in another locating hole and the nail hole,, write down pointer indication scale to align the aiming indicator post.After intramedullary pin is squeezed into pulp cavity, pointer is adjusted to former scale, locating hole and nail hole can be aligned automatically, hole exactly by adjusting bolt.

Claims

1, a kind of intramedullary nail with lock far-end nail hole aiming automatic indicator, comprise handle (1), be installed in the adjustable locating rod (2) above the handle (1) and be installed in the following intramedullary pin (3) of handle (1), it is characterized in that: be fitted with magnetic force aiming indicator in the locating hole on adjustable locating rod (2), this magnetic force aiming indicator has a positioning pipe (5), in positioning pipe (5), be hinged with sighting bar (9) by hinge (8), sighting bar (9) lower end is fixed with Magnet (10), on sighting bar (9) and positioning pipe (5), have nail hole site indicating device, be fitted with probe (4) in intramedullary pin (3), the front end of probe (4) also is equipped with the Magnet (11) that attracts mutually with sighting bar (9) lower end Magnet (10).

2, intramedullary nail with lock far-end according to claim 1 nail hole aiming automatic indicator is characterized in that said nail hole site indicating device comprises the pointer (6) that is fixed on the sighting bar (9) and is fixed on the graduated disc (19) that cooperates with pointer (6) on the positioning pipe (5).

3, intramedullary nail with lock far-end according to claim 1 is followed closely hole aiming automatic indicator, it is characterized in that the lower end closed of positioning pipe (5).

4, the upwards bending and inserting in the aperture on the handle (1) of intramedullary nail with lock far-end according to claim 1 nail hole aiming automatic indicator, the rear end that it is characterized in that probe (4).

5, intramedullary nail with lock far-end nail hole aiming automatic indicator according to claim 1 is characterized in that limited block (14) is equipped with in the rear end of probe (4).