CN2353321Y

CN2353321Y - Pliers-type resetting fixer for bone fracture

Info

Publication number: CN2353321Y
Application number: CN 98250793
Authority: CN
Inventors: 李俭
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-12-19
Filing date: 1998-12-19
Publication date: 1999-12-15
Anticipated expiration: 2008-12-19

Abstract

The utility model relates to a pliers type restoring and fixing device for fracture, which is composed of a pair of clamping pliers and a connecting rod, wherein, the clamping pliers are formed by the combination of a pliers body 5 with double claws and a pliers body 6 with a single claw via a shaft sleeve 8, the lower parts of the pliers bodies are provided with holes 14, and a pliers handle can be disassembled. The connecting rod is composed of a sleeve pipe 7 and rods 10 and 12 hinged with each other, wherein, the rod 12 is connected with the sleeve pipe 7, one end of the rod 10 is screwed down by a nut 13 after penetrated through the shaft sleeve 8, and the rod 10 and the clamping pliers are combined into a whole. The distance between the clamping pliers of the pliers type restoring and fixing device for fracture can be extended, shrunk and rotated, so the utility model is suitable for the omnidirectional restoration of fracture. The utility model avoids operations for penetrating bones with needles, connecting bones with steel plates, etc. and reduces the pain of patients.

Description

The jaw type fracture reduction fixator

This utility model belongs to medical apparatus and instruments, particularly fracture reduction fixator.

Existing fracture reduction fixator has external fixator and inner fixer, and they all are to thread a needle at fracture site, makes draw point form an integral body by connecting plate etc. then, promptly drives fracture site by draw point and resets.Owing to thread a needle at fracture site, particularly inner fixed law needs two operations, causes very big misery to the patient.

To be that design is a kind of be convenient to operation and adjust the purpose of this utility model, is fit to each position reduction of the fracture of whole body, is convenient to the patient and carries and can alleviate patient suffering's fracture reduction fixator.

Design philosophy of the present utility model is must vise fracture site adjustment with clamp earlier fixedly the time and reset carrying out the reduction of the fracture originally, and companys of threading a needle steel plate carries out fixed two steps and operates and change a step into then.Directly two or more clamps are connected as a single entity after promptly adjustment resets to fracture site with clamp with connecting rod.Like this, the sclerotin injury that removing from threads a needle causes helps sclerotin healing, and save to connect operation such as steel plate, has alleviated patient's misery.Carry in order to make this jaw type fracture reduction fixator be convenient to the patient, will clamp being designed to detachable.In order to adapt to each position reduction of the fracture of whole body, but both being designed to the Shen, connecting rod contracts, again the gimbal structure that can rotate arbitrarily.

Below, narrate its structure with reference to accompanying drawing.

A kind of jaw type fracture reduction fixator, it comprises clamp and connecting rod, it is characterized in that clamp passes through axle sleeve 8 be combined intos by volsella body 5 and monodactyle caliper 6, axle sleeve 8 is installed on the volsella body 5, the position of corresponding axle sleeve 8 has semi-circular groove on the monodactyle caliper 6, in the bottom of caliper porose 14 and the clamping screw 2 that is positioned at hole 14, the caliper afterbody have and pincers the 1 pincers handle 4 that links to each other; Connecting rod is installed the bar 12 that can rotate by jackscrew 15 respectively by the two ends of sleeve pipe 7 in the hole of sleeve pipe 7, other has an end of bar 10 to link mutually by trip bolt 11 with bar 12 and is fixing, the other end of bar 10 or be threaded, it passes the back and makes it to become one with caliper with nut 13 from axle sleeve 8, perhaps the other end of bar 10 is not threaded, after passing from axle sleeve 8, it links to each other with sleeve pipe 7, so that connect another caliper again by sleeve pipe 7 by jackscrew 15.Bar 10 position that contacts with axle sleeve 8 is flange shape, and the contact surface of this flange and axle sleeve 8 is dentation.Bar 10 all is dentation with the face that is meshed of bar 12 and the inner surface of chela 9.

In order to reduce the volume and weight of this jaw type fracture reduction fixator, be convenient to the patient and carry, will clamp and be designed to releasable to 1.Promptly pincers are blind hole to 1 end that links to each other with pincers handle 4, and pincers handle 4 inserts the back and is fixed with jackscrew 3.

For the ease of doctor operation, at pincers 1 end is equipped with locator card 16, be equipped with alignment pin 17 at another end that clamps 1.Like this, after chela 9 is clamped bone, locator card 16 can be stuck on the alignment pin 17, keep the closure state of chela 9.

For the outer wall that makes jackscrew 15 and sleeve pipe 7, jackscrew 3 and pincers have screw-threaded engagement than multi-turn to the blind hole outer wall of 1 upper end, the external diameter that makes simultaneously sleeve pipe 7 again and clamp 1 is thinner, the interior axially bored line and the pincers of sleeve pipe 7 all are designed to respect to its outer surface to be eccentric state, at the position that outer wall is thicker jackscrew 15 and jackscrew 3 to be installed to the blind hole axis of 1 upper end.Pincers handle 4 and pincers can be the cross section of the blind hole of 1 upper end circle, semicircle, square or regular hexagon.Be connected with sleeve pipe 7 cross section of part of bar 12 also can be circular, semicircle, square or regular hexagon.For easy to process, an end and the bar 12 of sleeve pipe 7 can be made of one.The hole 14 of so-called caliper bottom and the clamping screw 2 that is positioned at hole 14 have two kinds of structures.A kind of structure such as Fig. 1-shown in Figure 6, the axis in hole 14 is parallel with the axis of sleeve pipe 8.The lonely shape hole 14 that suitable clamp folding is arranged in the bottom of caliper, clamping screw 2 are therefrom passed the back and use nut screwing clamping, make between monodactyle caliper 6 and the volsella body 5 generation stiction and lock.Another kind of structure such as Figure 14 and shown in Figure 15, the axis of the axis in hole 14 and sleeve pipe 8 is perpendicular.Have strip hole 14 in the bottom of volsella body 5, be processed with screwed hole 20 in the bottom of monodactyle caliper 6, clamping screw 2 passes the back and is meshed with screwed hole 20 from strip hole 14, and is by the pulling force of clamping screw 2 that chela is closed and locked.

During use, insert volsella body 5 and monodactyle caliper 6 subcutaneous respectively, make chela 9 clamp bone, then the semi-circular groove cover of monodactyle caliper 6 is stuck in the outer surface of axle sleeve 8, be combined as complete caliper with volsella body 5, clamp is clamped the skeleton of desiring to reset, again locator card 16 is stuck on the alignment pin 17, tighten clamping screw 2 afterwards.And then holding the relative position that two clamps are adjusted fracture portions.Because the structure of connecting rod has guaranteed any variation (bar 12 can stretch and rotate, and can take up solid screw 11 rotations between bar 10 and the bar 12) of the flexible and relative angle of two clamp relative distances in sleeve pipe 7.When two fracture portions aligned positions, tighten jackscrew 15 and nut 13, and trip bolt 11, unclamp jackscrew 3 at last, lay down pincers 1.

This jaw type fracture reduction fixator has following advantage:

1, chela 9 directly fuses with connecting rod after blocking fracture site, has avoided threading a needle, connect the misery that steel plate brings to the patient to sclerotin.

2, because the structure of connecting rod, determined between the clamp not only scalable but also can rotate arbitrarily, thereby, can carry out vertically fracture site, laterally and at any angle adjust.

3, because pincers are detachable 1, in light weight so volume is little, be convenient to the patient and carry.

Description of drawings:

Fig. 1 is the structural representation of this jaw type fracture reduction fixator, Fig. 2 lays down A behind nut 13 and the bar 10 to view, Fig. 3 be lay down pincers the B after 1 to view, Fig. 4 is the front view of monodactyle caliper, Fig. 5 is the front view of volsella body 5, Fig. 6 lays down the C-C cutaway view that clamps 1, Fig. 7 is the front view of bar 10, and Fig. 8 is the front view of bar 12, and Fig. 9 is the vertical view of bar 10, Figure 10 is the vertical view of bar 12, Figure 11 is a kind of structural representation of locator card 16, and Figure 12 is the another kind of structural representation of locator card 16, and Figure 13 is the alignment pin sketch map, Figure 14 is another kind of caliper structural representation (having laid down the pincers handle), and Figure 15 is that D is to view.

Embodiment:

Example 1.

A kind of jaw type fracture reduction fixator, it is made up of two clamps and connecting rod, referring to Fig. 1.Trip bolt hole on the bar 12 of figure middle sleeve 7 both sides is vertical mutually, be sleeve pipe 7 right sides bar 12 from the bar 12 correspondence position half-twists in left side, so that the bar on right side 10 axis and bar 12 axis are angled in vertical plane, represent that promptly two clamps are in certain angle.Because Fig. 1 represents the situation that a plurality of clamps combine with sleeve pipe, have only two clamps in this example, so should change left side sleeve pipe 7 among Fig. 1 into nut 13, the TOE of corresponding bar 10, bar 10 passes the back from the left side clamp and tightens with nut 13, and is promptly identical with the right side, pincers are the shape of the 16 employing Figure 11 of the locator card on 1, one strip hole is promptly arranged on the surface of locator card 16, and a side in strip hole has some grooves 18 that hold alignment pin 17, and alignment pin is cylindrical.

2. 1 kinds of jaw type fracture reduction fixators of example, it is made up of three clamps and two groups of connecting rods, referring to Fig. 1.Bar 10 end faces that pass left side clamp 1 are not threaded, with jackscrew 15 it linked to each other with left side sleeve pipe 7, and left side sleeve pipe 7 is connected the 3rd clamp (not drawing among the figure) by bar 12 again with 10.Like this, it is fixing to be fit to resetting of three sections skeleton.Pincers promptly have some by the continuous irregularly-shaped holes 19 that form of not isometrical circle on locator card 16 the shape of locator card 16 on 1 as shown in figure 12.Alignment pin 17 is a mushroom shown in Figure 13.The shape in the hole 14 on clamping originally such as Fig. 1-shown in Figure 6, promptly at the hole broad of a certain chela side of volsella body, be used to hold the head of clamping screw 2, hole and the hole on the monodactyle caliper 6 in another chela side are all narrower, the screw rod of clamping screw 2 therefrom passes, at the butterfly-shaped nut screwing clamping of the outer surface of volsella body 5.

Claims

1, a kind of jaw type fracture reduction fixator, it comprises clamp and connecting rod, it is characterized in that clamp passes through axle sleeve (8) be combined into by volsella body (5) and monodactyle caliper (6), axle sleeve (8) is installed on the volsella body (5), the position that monodactyle caliper (6) is gone up corresponding axle sleeve (8) has semi-circular groove, bottom at caliper porose (14) and the clamping screw (2) that is positioned at hole (14), the caliper afterbody has the pincers handle (4) that (1) is linked to each other with pincers, connecting rod is installed the bar (12) that can rotate by jackscrew (15) respectively by the two ends of sleeve pipe (7) in the hole of sleeve pipe (7), other has an end of bar (10) to link mutually by trip bolt (11) with bar (12) and is fixing, the other end of bar (10) or be threaded, it passes the back and makes it to become one with caliper with nut (13) from axle sleeve (8), perhaps the other end of bar (10) is not threaded, it passes the back and links to each other with sleeve pipe (7) by jackscrew (15) from axle sleeve (8), bar (10) position that contacts with axle sleeve (8) is flange shape, the contact surface of this flange and axle sleeve (8) is dentation, and bar (10) all is dentation with the frame field of conjugate action of bar (12) and the inner surface of chela (9).

2, according to the said jaw type fracture reduction fixator of claim 1, it is characterized in that pincers (1) are blind hole with the end that pincers handles (4) link to each other, pincers handles (4) insert the back and are fixed with jackscrew (3).

3, according to claim 1 or 2 said jaw type fracture reduction fixators, it is characterized in that the end of (1) being equipped with locator card (16) at pincers, at another pincers the end of (1) is equipped with alignment pin (17).

4, according to claim 1 or 2 said jaw type fracture reduction fixators, the interior axially bored line and the pincers that it is characterized in that sleeve pipe (7) are the blind hole axis of (1) upper end eccentric state with respect to its outer surface all, are equipped with jackscrew (15) and jackscrew (3) at the thicker position of outer wall.

5, according to the said jaw type fracture reduction fixator of claim 3, it is characterized in that the interior axially bored line of sleeve pipe (7) and pincers are eccentric state with respect to its outer surface all to the blind hole axis of (1) upper end, be equipped with jackscrew (15) and jackscrew (3) at the thicker position of outer wall.