JPS59155246A - External fixing type orthopedic surgical apparatus - Google Patents

Abstract

External orthopedic fixing apparatus comprises a pair of hexagonal collars (1, 2) connected parallel to each other by means of a pair of adjustable spacers (3) each extending normal to the planes of the collars and connected to opposite sides of each collar; each collar being further provided (in the sides thereof not connected to the adjustable spacing members) with apertures (4) extending transversely of the collar for mounting fixing rods (8) extending between opposite faces of the collar. In one embodiment (as illustrated) the adjustable spacing members take the form of a male member (9) slideable in a longitudinal aperture in a female member (8) each demountably connected, via screw thread rods (6) and nuts (7), to the collars. In another embodiment, the adjustable spacing means take the form of rotatable screw threaded rods connected to one collar and passing through a thread hole in the other collar. <IMAGE>

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to medical science, particularly orthopedics and trauma therapy.

The concept of external fixation devices and their applications are widely known. For example, in 1942 in the United States, Haines
(Ynea) designed a unique square splint, which consists of four screw pins that are introduced into the bone. 197 O 7 Montpelier, Reims (M
Not satisfied with the degree of fixation provided by these devices, the school created a double dust square fixation device, which later led to the circular or semi-circular fixation device in 1980. Research on external fixation devices began at a research institute in Kergan, Siberia, USSR. Gravinyl
Dr. Grabiel Garov devised a device consisting of 92 hoop members integrally formed on four cylindrical shafts with worm screws, in which each piece had a pair of crossed wires. Penetrated through the longitudinal axis of the bone. Also in the Soviet Union, Porcoa (V
olkov) and Ogane
Dr. Aian) actually used their device, which consisted of two cylindrical rods (cylindrical cylinders) with four half loops connected by a cylindrical shaft, two cross-shaped shortening devices, and a worm screw inside. It is made up of two horizontal bars.

The above-mentioned prototype of Gazoliel Iridelov is the one closest to the present invention. However, Dr. Iridelov's external fixation device is not easy to use, as the surgeon requires the assistance of a few assistants when applying it. This device requires at least six loop members and therefore some wires are used to attach it to the bone, and its tightening requires winding the wires, so these wires cannot be used with other fixation devices. becomes useless. Its handling is complicated, requiring the use of wrenches on various nuts, which can be dangerous when stretching parts, and requiring just one quarter rotation every six hours, which is It is unsafe for both the patient and the accompanying relatives, as it is painful for the patient, and if the adjustment is not carried out properly, irreversible accidents may occur. I get it. Moreover, a device with three runes takes up a lot of space and is heavier.

The present invention has been made to eliminate this drawback, and its purpose is to cure many medical conditions with one device, to reduce the time required to attach it to the patient by half, and to make it easy to assemble in any orthopedic surgery. The object of the present invention is to provide an orthopedic fixation device that can be used.

The features and advantages of the present invention are as follows.

B, diaphyseal fracture, pseudoarthrosis
Conditions such as elongation or shortening of amputated ends of oais and their shredded ends can be cured without any modification.

The time required to wear the device of the present invention is 172 times less than the time required to wear Dr. Iridelov's device and others.

60 The device can be left pre-assembled, making it easy, safe and easy to use in any orthopedic surgery.
The device is equipped with a scale with private graduations, and two graduation butterfly nuts ensure correct operation of the equipment by manual operation.

The device of the present invention is formed by two hexagonal bone-like flat plates, an upper portion and a lower portion, which are joined by two sliders.

Four narrow cuts are provided on each side adjacent to each hexagonal slider, and two guides inserted into two holes at the end of each slider are fixedly provided. Between these guides there is a hole for a threaded rod.The threaded rods protrude from both the upper and lower ends of the slider, and each has a nut.When the nuts are turned, the hexagonal flat plate moves away from the slider and approaches it. It is configured as follows.

The external fixation device for fingers consists of two hexagonal plates connected by two sliders in the form of connecting threaded rods, and six holes on each side adjacent to the connecting threaded rods of the upper and lower plates. These holes are formed to pass through the threads and are opened at different levels to prevent the threaded rods from coming into contact with each other. In addition, two holes are provided at the apex of the hexagon to act as a trap to allow a rod to pass diagonally in case of an unstable fracture. The nut on the connecting threaded rod is sb.
This rotation causes the hexagonal plates to move toward each other, while turning them to the right causes them to move toward each other.

Next, embodiments of the present invention will be described below with reference to the accompanying drawings.

In Fig. 1, this device consists of two hexagonal bone-like flat plates, an upper piece 2 and a lower piece 1, which are connected by two slides/3. The length of the four sides other than the two sides is 5cIn and the height is 0.3cr.
n four slots 4 are formed, and each slider 3 has two guides 5 fixed on corresponding sides of the hexagon and passed through two insertion holes at the top and bottom ends of the slider. The combination is performed using a slider. A hole is formed on the same side of this hexagon and between the guides, through which a screw 6 extends so as to protrude from both ends of the slider, and when the nut 7 is turned, the hexagonal piece is inserted into the slider. Pull them apart when they are brought close together.

Each slider 3 has two male parts 9 and 10.
It is made up of several parts. The male part moves through the reed groove, and both parts are connected by a semicircular part 11 at the base of the female part 10 and a small square part 1202 fixed to the end of the male part. has been done. These two elements are fixed on the semicircular part 11 and connected to a wing nut 14 on the male part 9, so that turning the wing nut 14 to the right closes the slider 3, which at the same time turns its end into a hexagonal shape. Connect the two halves and bring the two close together,
Turning the nut in the opposite direction pulls the sliders apart and these sliders pull the hexagonal pieces apart. The so-called female portion 10 of the slider 3 has a scale with graduations up to 11 cIn, indicating the maximum opening depth of the slide If3.

The purpose of the thin cut holes 4 formed in pairs on the front side of each hexagon is to have a height difference of 3.5 m so that the threaded rod 8 cannot come into contact with each other when penetrating the bone. Good attachment to the bone is obtained.

The dimensions of the slot 5 of length 5α width 0.3 crn also provide support and guidance for the threaded rod and different angles facing the bone, allowing movement of the rod once the bone is fixed with the rod. The running-in rod is threaded and acts as a male part of the screw that penetrates the bone at low rotational speeds to provide a rigid fixation. The threaded rod passes through each hexagonal piece at an angle determined by the wound (in the case of a displaced fracture), and at an angle of 60° in the case of a pseudoarthrosis without elongation or displacement, and protrudes through the thin incision 4. It is easy to completely tension the threaded rod 8 using small nuts, and these nuts ensure the fixation of the threaded rod. This ensures the immobility of the rod. Lateral movement of the bone can be corrected by loosening one end of the rod 8 and tightening the nut at the other end to pull the end of the bone toward this side, each hexagonal piece having four ends. Therefore, in each hexagonal piece, movement in four directions can be corrected in a wide range of movement for each thin cut.

If it is necessary to pass a rod through it, up to six rods are possible.

Some patients had unstable fractures or third fragments, or
In view of the fact that it is necessary to lower the rticotomra and cure pseudoarthrosis with bone loss, two holes are formed in the angle part of the hexagon that extend to the opposite ends of another hexagon, and the rods are crossed at an oblique position. The rod can be easily threaded through the rod, and the rod can be tensioned by forming a socket on the wing nut or at one end for rotating the nut.

Both crossbars must be removed to allow the slider to move.

For patients with shortening, the external fixation device is closed and assembled. That is, by fully connecting the hexagonal pieces to the slides and closing them, the patient can handle the device as follows. The nut 7 makes four rotations every time. This nut is provided with a slit to avoid patient inaccuracies and also allows precise control of the resulting elongation.

In the case of pseudoarthrosis, the device is left open according to the surgeon's criteria for the compression necessary to produce induration of the bone.

In the case of a new fracture with superposition of fractures, the device is kept closed, the superposition is calculated in σ in the X-ray, both sliders 3 are actuated simultaneously above 0.5 of the superposition, and then Once the lateral movement is corrected using a threaded rod as described above and each end is placed in front, the slider 3 is closed until the desired compression is achieved and the patient is able to walk the next day.

Next, the external fixation device for fingers has two hexagonal upper pieces 17 and lower hexagonal pieces 16 as shown in FIG. These holes are placed at different levels so that the threaded rods do not touch each other. Two holes 20 are formed at the apex of each hexagon to allow threaded rods to pass diagonally in the case of cine stable fractures. Both hexagons are connected by two sliders 21 to a threaded rod 22 which is rotated by a nut 23), so that when the nut is rotated to the right, the hexagons move apart, and when the nut is rotated to the left, both hexagons approach each other.

The application implementation of this finger device is the same as that of the orthopedic external fixation device described above.

The external fixation device of the present invention has been utilized for the following medical conditions:

Pseudoarthrosis (femur, tibia, superior ligament) (corticotomia) Fractures (femur, tibia, anterior ligament) Treatment of pseudoarthrosis without bandage surgery accounts for 70% of the cases. 100% for overstretching, stretching and fractures.

External fixation devices for fingers have been used for pathologies such as elongation of amputated ends, open or closed fractures of phalanges, and congenital deformities of fingers.

The orthopedic external fixation device of the present invention exhibits great economic efficiency in hospital management because it minimizes hospital stays, medicated plaster dressings, and the use of artificial bone in cases such as fractures and pseudoarthrosis. Finally, the device speeds up patient recovery.

[Brief explanation of drawings]

Figure 1 is a drawing of the external fixation device using the internal factor method, Figure 2 is the front top and side view of the slider, Figure 3 is the top and side view of the blue water rectangular plate, and Figure 4 is the external fixation device for fingers. Each is shown below. 1: Hexagonal flat plate bottom piece; 2: Hexagonal flat plate top piece; 3 Varnish slider; 4: Thin cutting edge; 5: Guide; 6: Screw pin; 7: Wing nut: 8: Rod: 9' two male part; 10 : Female part; 11:
Semicircular part; 12: Square part; 13: Screw bottle; 14:
Butterfly Natsuto. Agent Akira Asamura 6-91 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] (1) Two bony hexagonal flat plates, an upper piece (2) and a lower piece (1).
are joined by two sliders (3), and each hexagon is provided with four thin cutting edges (4) located on the adjacent sides of the slider, and each hexagon is provided with each end of the slider. There are provided two guides (5) fixed in and passing through the two holes in the slider 4, between which there is a threaded pin (6) having a wing nut extending outwardly from the respective end of the slider.
) is formed with a hole through which the hexagonal piece can be moved toward or away from the slider by turning the wing nut. (2. In the device according to claim 1, the shredded shredder (4), which has hexagonal holes, has a length of 5 mm and a height of 0.6 mm. (3)! In the device according to claim 1, the slider has two parts, viz. It consists of a male part (9) and a female part (10) passing through the groove, the male and female parts having two elements: a semi-circular part (11) at the base of the female part and the end of the male part. The square part (12) fixed to the part is multi-jointed,
The parts are joined by a threaded pin (13) which is fixed to the semicircular part and the square part, which threaded pin is also fitted with a wing nut (13).
14) A device characterized in that when the nut is turned, the slider opens and fcb is closed in the respective directions. (4) A device according to claim 6, which is provided with a threaded pin (6) fixed to the end of the slider and actuated by a butterfly nut (7), so as to move the bony hexagonal flat plate longitudinally. A device characterized in that the slider is moved away from the slider in the direction of the slider and moved closer to the slider. (5) A device according to claim 6, characterized in that the female part (10) of the slider (3) and the slider have a school with a scale. (6) A device according to claim 1, in which the upper piece (2) and the lower piece (1) of the bony hexagonal plate have two holes at each apex of the hexagon, and the rib-like hexagonal plate has two holes at each vertex of the hexagon; (8) A device characterized by making it possible to send the material in an oblique direction. (7) In the device according to claim 1, the narrow cuts (4) located directly opposite each other in a paired configuration are hexagonal.
) A device characterized by a height difference of 3.5 m. (8) An external fixation device for fingers, consisting of two hexagonal upper parts (16) and lower parts (17), each side of each hexagon having to pass through a threaded rod (19). There are six holes (18), the distance between the holes is 1 inch, and the apex of each hexagon has two holes (2 holes) for passing the rod diagonally through.
0) Ashi, both hexagonal pieces are two sliders (21)
The threaded rod (22) rotates with the wing nut (23), and when the wing nut rotates to the right, the hexagons open, and when it rotates to the left, the hexagons approach each other. A device characterized by: