CN114617624A - A pull-reduction aid for femoral shaft fracture surgery - Google Patents

Abstract

The invention provides a lifting and reduction auxiliary device for femoral shaft fracture operation, which includes two lifting rods. The lifting rods are provided with a sliding groove, an arc groove and a rotation hole, and the arc center of the arc groove is the axis of the bone. Collinear; the axis of the rotating hole is collinear with the axis of the lifting rod; one of the two lifting rods is slidably connected with an arc-shaped plate, and the thickness of the arc-shaped plate and the arc center are matched with the arc-shaped groove; Another lifting rod in the root lifting rod is slidably connected with a rotating shaft, and the outer diameter of the rotating shaft matches the inner diameter of the rotating hole; a first sliding plate is arranged on the arc plate, and the first sliding plate is slidably connected with the sliding groove; the rotating shaft The outer surface of the sliding plate is provided with a second sliding plate, and the second sliding plate is slidably connected with the chute; the lengths of the first sliding plate and the second sliding plate are both 1/2 of the length of the sliding groove. The invention not only can achieve axis reduction by pulling, but also can achieve circumferential reduction by twisting action, so as to achieve the purpose of complete reduction of the fractured position.

Description

A pull-reduction aid for femoral shaft fracture surgery

technical field

The present invention relates to a fracture treatment device, in particular, to a lifting and reduction aid for femoral shaft fracture surgery.

Background technique

In recent years, with the continuous advancement of fracture treatment concepts, minimally invasive fracture surgery has been gradually adopted by orthopaedic surgeons. Minimally invasive treatment of fractures can minimize the damage to the soft tissue around the fracture, protect the blood supply around the fracture end, effectively speed up the recovery of patients, and improve the rate of fracture healing. Although minimally invasive surgery can greatly improve the fracture treatment rate, due to the small incision of minimally invasive surgery, the exposure of the fracture end during the operation is very limited, which greatly increases the difficulty of fracture reduction. Relying solely on the Hoffman retractor cannot achieve precise reduction of the fractured end. Fracture dislocation includes axial dislocation and peripheral dislocation. Axial dislocation means that the axes of the two broken bones are not collinear; peripheral dislocation means that the anterior and posterior directions of the two broken bones are deviated (for example, the foot on the calf should be oriented toward the front. , after the peripheral line is dislocated, the foot may face to the side, and in severe cases, it may face the back), and most of the auxiliary fracture reduction devices on the market currently use traction to achieve auxiliary axis dislocation, although it can improve the fracture position to a certain extent. , but cannot directly act on the fracture end to achieve effective circumferential reduction.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a pull-reduction aid for femoral shaft fracture surgery, which aims at the deficiencies of the prior art, and can not only achieve axis reduction by pulling, but also achieve circumferential reduction by twisting. So as to achieve the purpose of complete reduction of the fracture position.

The embodiments of the present invention are realized by the following technical solutions: a lifting and reducing aid for femoral shaft fracture surgery, comprising two lifting rods with the same structure, and the two lifting rods are respectively fixedly connected with two sections of bone; the The lifting rod is provided with a chute, an arc-shaped groove and a rotating hole, and the sliding groove, the arc-shaped groove and the rotating hole are arranged in sequence along the circle center of the lifting rod to the outer side of the lifting rod, and the sliding groove, the arc The groove and the rotation hole are communicated through a gap; the arc center of the arc groove is collinear with the axis of the bone; the axis of the rotating hole is collinear with the axis of the lifting rod; one of the two lifting rods An arc-shaped plate is slidably connected in the arc-shaped groove of the pull rod, and the thickness and arc center of the arc-shaped plate are matched with the arc-shaped groove; the rotation hole of the other pull rod of the two pull rods slides in the rotating hole A rotating shaft is connected, and the outer diameter of the rotating shaft matches the inner diameter of the rotating hole; a first sliding plate is arranged on the arc-shaped plate, and the first sliding plate is slidably connected with the chute; the outer surface of the rotating shaft A second sliding plate is provided, and the second sliding plate is slidably connected with the sliding groove; the lengths of the sliding groove, the arc groove and the rotating hole are matched; the lengths of the first sliding plate and the second sliding plate are the sliding grooves 1/2 of the length.

Further, a limit hole is provided in the chute, the limit hole is displaced by 1/2 of the length direction of the chute, and a limit screw is threaded in the limit hole.

Further, the lifting rod is provided with a screw hole, the screw hole is threadedly connected with a connecting screw, and the axis of the connecting screw is perpendicular to the axis of the lifting rod.

Further, the lifting rod is provided with a lifting hole, and the inner thread of the lifting hole is connected with a handrail.

The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects:

1. The present invention can align the axes of the lifting rod by pulling the lifting rod and cooperating with the rotating hole, so as to achieve the purpose of resetting the axis of the fracture position;

2. The present invention can rotate the bone whose axis has been displaced and reset along the axis of the bone through the cooperation and rotation of the two lifting rods with the arc-shaped groove and the arc-shaped plate, so as to realize the circumferential dislocation and reset of the bone.

Description of drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are For some embodiments of the present invention, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

Fig. 1 is the structural representation provided by the present invention;

Fig. 2 is the three-dimensional structure schematic diagram of the lifting rod provided by the present invention;

Fig. 3 is the state diagram of the present invention when the axis misalignment is reset;

Fig. 4 is the state diagram of the present invention when the axis misalignment is reset;

Icon: 1-lifting rod; 11-chute; 12-rotating hole; 13-arc slot; 14-lifting hole; 15-screw hole; 2-connecting screw; 3-hand lever; 4-rotating shaft; 5-skateboard; 6-arc board;.

Detailed ways

In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear The azimuth or positional relationship indicated by ” etc. is based on the azimuth or positional relationship shown in the attached drawings, or the azimuth or positional relationship that the product of the invention is usually placed in use, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating Or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In the description of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms "arranged", "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed The connection can also be a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

As shown in Figures 1 to 4, a lifting and reduction aid for femoral shaft fracture surgery includes two lifting rods 1 with the same structure, the two lifting rods 1 are respectively fixedly connected with two sections of bone, and the lifting rods The movement of 1 brings the movement of bones; the lifting rod 1 is provided with a chute 11, an arc-shaped groove 13 and a rotating hole 12, and the sliding groove 11, the arc-shaped groove 13 and the rotating hole 12 are arranged along the The center of the circle to the outer surface of the lifting rod 1 is arranged in sequence, and the chute 11, the arc-shaped groove 13 and the rotation hole 12 are communicated through the gap; the arc-shaped center of the arc-shaped groove 13 is collinear with the axis of the bone, so as to When the arc-shaped groove 13 is the movement track, the rotation center of the lifting rod 1 is collinear with the axis of the bone, which can make the bone rotate around its own axis, so that the bone with circumferential dislocation can be reset; the axis of the rotation hole 12 It is collinear with the axis of the lifting rod 1, and when the lifting rod 1 takes the rotation hole 12 as the movement track, the rotation center of the lifting rod 1 matches the axis of the lifting rod 1, and the lifting rod 1 rotates with the bone to realize the axial dislocation of the bone. Reset; an arc-shaped plate 6 is slidably connected in the arc-shaped groove 13 of one of the two lifting rods 1 , and the thickness and arc-shaped circle center of the arc-shaped plate 6 are matched with the arc-shaped groove 13 , when the arc-shaped groove 13 is used as the movement track, the two ends of the arc-shaped plate 6 are respectively placed in the arc-shaped grooves 13 of different lifting rods 1; the rotation of the other lifting rod 1 in the two lifting rods 1 A rotating shaft 4 is slidably connected in the hole 12, and the outer diameter of the rotating shaft 4 matches the inner diameter of the rotating hole 12. When the lifting rod 1 takes the rotating hole 12 as the movement track, the two ends of the rotating shaft 4 are respectively placed in different positions. Inside the rotating hole 12 of the pulling rod 1; the arc-shaped plate 6 is provided with a first sliding plate 5, the first sliding plate 5 is slidably connected with the chute 11, and the first sliding plate 5 extends into or exits with the arc-shaped plate 6 Arc-shaped groove 13; the outer surface of the rotating shaft 4 is provided with a second sliding plate 5, the second sliding plate 5 is slidably connected with the chute 11, and the second sliding plate 5 carries the rotating shaft 4 into or out of the rotating hole 12; The lengths of the chute 11, the arc groove 13 and the rotating hole 12 are matched and the length direction of the chute 11, the arc groove 13 and the rotating hole 12 is matched with the axial direction of the pull rod 1; The length of the second sliding plate 5 is 1/2 of the length of the sliding slot 11 , so as to prevent the first sliding plate 5 or the second sliding plate 5 from interfering with the movement of the pulling rod 1 .

Specifically, the cross sections of the first sliding plate 5 and the second sliding plate 5 are both T-shaped.

It should be noted that the plate and the first sliding plate 5 and the second sliding plate 5 correspondingly connected to the pulling rod 1 will not protrude into the chute 11 of the other pulling rod 1 .

In this embodiment, a limit hole is provided in the chute 11, the limit hole is displaced by 1/2 of the length direction of the chute 11, and a limit screw is threaded in the limit hole to limit the position of the limit screw. The position screw can limit the movement of the first sliding plate 5 and the second sliding plate 5, so as to prevent the first sliding plate 5 and the second sliding plate 5 from exiting the chute 11 connected to themselves when the lifting rod 1 is working, or extending into another lifting rod 1. Chute 11.

In this embodiment, the lifting rod 1 is provided with a screw hole 15, the screw hole 15 is internally threaded with a connecting screw 2, and the axis of the connecting screw 2 is perpendicular to the axis of the lifting rod 1. The screw 2 and the pulling rod 1 are detachably and fixedly connected with the fractured bone at both ends of the fracture.

Specifically, the screw hole 15 is a countersunk hole, so as to prevent the nut connecting the screw 2 from scratching the tissue when the pulling rod 1 rotates.

In this embodiment, the lifting rod 1 is provided with a lifting hole 14 , and the lifting hole 14 is internally threaded with a handrail 3 , so that the operator can apply force to the lifting rod 1 by hand.

In the present embodiment, the working mode of a pull-reduction aid for femoral shaft fracture surgery is as follows:

S1: Connect the two lifting rods 1 to different broken bone segments by connecting screws 2;

S2: The operator lifts the handle bar 3 and translates with one of the lift bars 1 to make the axes of the two lift bars 1 coincide; at this time, the two broken bones are located in the arc with the axis of the lift bar 1 as the center of the circle superior

S3: As shown in FIG. 3 , the operator slides the second sliding plate 5 to insert the rotating shaft 4 into the rotating hole 12 , and the operator turns the handrail 3 and rotates with one of the lifting rods 1 along the axis of the rotating shaft 4 , so that the axes of the two broken bones coincide, and the axis of the broken bones is reset;

S4: As shown in FIG. 4, after step S3, the operator slides the second sliding plate 5 to make the rotating shaft 4 exit the rotating hole 12; and the operator slides the first sliding plate 5 to insert the arc-shaped plate 6 into the arc-shaped groove 13 , the operator toggles the handle bar 3, and the handle bar 3 rotates with one of the lifting rods 1 along the arc groove 13, so that the broken bone rotates on its own axis, thereby completing the circumferential reset of the broken bone.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (4)

1. A lifting reduction assistor for femoral shaft fracture surgery is characterized in that: the bone lifting device comprises two lifting rods (1) with the same structure, wherein the two lifting rods (1) are respectively fixedly connected with two sections of bones; the lifting rod (1) is provided with a sliding groove (11), an arc-shaped groove (13) and a rotating hole (12), the sliding groove (11), the arc-shaped groove (13) and the rotating hole (12) are sequentially arranged from the circle center of the lifting rod (1) to the outer side surface of the lifting rod (1), and the sliding groove (11), the arc-shaped groove (13) and the rotating hole (12) are communicated through gaps; the arc circle center of the arc-shaped groove (13) is collinear with the axis of the bone; the axis of the rotating hole (12) is collinear with the axis of the lifting rod (1); an arc-shaped plate (6) is connected in the arc-shaped groove (13) of one lifting rod (1) of the two lifting rods (1) in a sliding mode, and the thickness and the arc-shaped circle center of the arc-shaped plate (6) are matched with the arc-shaped groove (13); a rotating shaft (4) is connected in a rotating hole (12) of the other lifting rod (1) of the two lifting rods (1) in a sliding manner, and the outer diameter of the rotating shaft (4) is matched with the inner diameter of the rotating hole (12); the arc-shaped plate (6) is provided with a first sliding plate (5), and the first sliding plate (5) is connected with the sliding groove (11) in a sliding manner; a second sliding plate (5) is arranged on the outer surface of the rotating shaft (4), and the second sliding plate (5) is connected with the sliding groove (11) in a sliding mode; the lengths of the sliding groove (11), the arc-shaped groove (13) and the rotating hole (12) are matched; the lengths of the first sliding plate (5) and the second sliding plate (5) are 1/2 of the length of the sliding chute (11).

2. A lifting reduction aid for femoral shaft fracture surgery according to claim 1, wherein: a limiting hole is formed in the sliding groove (11), the limiting hole is displaced at the 1/2 position in the length direction of the sliding groove (11), and a limiting screw is connected to the inner thread of the limiting hole.

3. A lifting reduction aid for femoral shaft fracture surgery according to claim 1, wherein: the lifting rod (1) is provided with a screw hole (15), the screw hole (15) is connected with a connecting screw (2) in an internal thread mode, and the axis of the connecting screw (2) is perpendicular to the axis of the lifting rod (1).

4. A lifting reduction aid for femoral shaft fracture surgery according to claim 1, wherein: the lifting rod (1) is provided with a lifting hole (14), and the lifting hole (14) is connected with a handrail (3) in an internal thread manner.

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