JPH07124170A - Retractor for stable holding of muscle - Google Patents

Abstract

PURPOSE:To secure visual field by stably holding the muscle of the incised section of a patient during operation. CONSTITUTION:This retractor for stably holding the muscle includes a bent plane retractor body 1 of an L shape as a whole constituted by fixing a pair of tubular pieces 2 to one end and forming recessed parts 3 on both flanks of the intermediate part. Steel wires are inserted into these tubular pieces 2 and one end thereof is pricked and fixed into the bone in the incised part of the patient, by which the incised part is fixed and the other end is detained to the recessed parts 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retractor used for stably holding muscles of an incision site in order to secure a visual field of the incision site of a patient during surgery.

[0002]

2. Description of the Related Art Conventionally, during surgery such as rotational acetabular osteotomy, chiari surgery and artificial joint surgery in a patient's hip joint,
In order to secure the field of view of the incision site, an assistant called a plate or bar-shaped muscle hook bent in an approximately L shape, and the assistant always pulls and holds the muscle of the incision site.

[0003]

In this type of operation over a long period of time, it requires a great deal of labor for an assistant to constantly pull and stabilize the muscle at the incision site using a muscle hook. In addition, in female patients with a large amount of subcutaneous fat and in male patients with good muscle development, the field of view at the incision site is very deep, making it difficult to stabilize the muscle hook, and the muscle easily protrudes from the lower part of the muscle hook, resulting in a stable visual field. Is difficult to secure.

The present invention has been made to solve the above-mentioned problems, and can be fixed to the bone of a patient's incision site so as to stably hold the muscle of the incision site and secure a visual field. An object of the present invention is to provide a retractor for maintaining muscle stability.

[0005]

In order to achieve this object, the present invention has a bent plate-shaped retractor in which a pair of tubular pieces are fixed to one end and concave portions are formed on both side surfaces of an intermediate portion. A main body and a pair of steel wires that are inserted through the tubular piece, one end of which is inserted into the human bone and fixed, and the other end of which is locked in the recess. We provide a retractor for maintaining muscle stability.

[0006]

[Operation] While holding the retractor body while pulling the muscle of the patient's incision site, pass the steel wire through the tubular piece and insert one end of it into the bone of the patient's incision site to fix it. By bending and locking the other end in the recess,
The muscles at the incision can be stably held in a pulled state, and the retractor body is also self-supported.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, the retractor body 1 of the retractor for maintaining muscle stability according to the present invention is generally L-shaped.
It is a relatively wide plate-shaped member that is bent to form a shape, and has a short tip fixing portion 1a, a long handle portion 1b, and a connecting portion that connects these portions at an angle to both portions 1a and 1b. 1c and. On the outer surface side of the tip fixing portion 1a, a pair of tubular portions 2 for inserting a steel wire that is inserted into and fixed to the bone of the incision site of the patient are fixed by an appropriate means such as welding. The inner diameter of the tubular piece 2 is slightly larger than the diameter so that the steel wire can easily pass through. Further, recesses 3 for locking the steel wire are formed on both side surfaces of the intermediate portion of the handle portion 1b. In the embodiment shown in FIG. 1, the pair of tubular pieces 2 are arranged in a shape of a figure 8 inclining to each other, but depending on the incision site, as shown in the embodiment of FIG. May be used by arranging in an inverted figure eight. If necessary, one of the pair of tubular parts may be vertical and the other may be inclined.

When using such a muscle stable holding retractor, as shown in FIG. 3, while keeping the retractor body 1 in a state in which the muscle 6 of the incision site 5 of the patient is pulled, for example, for those skilled in the art, A known steel wire 4 such as Kirschner steel wire is passed through the tubular portion pieces 2 and 2'of the distal end fixing portion 1 and one end portion 4a thereof is pierced and fixed to a bone 7 of an incision site such as a pelvis of a patient. Then, the steel wire 4 is bent just above the tubular piece 2 so as to hold down the muscle 6.
Then, the other end 4b of the steel wire is locked in the recess 3 of the handle portion 1b. By using the retractor body 1 in this manner, even if the doctor or the assistant does not hold the retractor body 1, the incision site 5
The muscle 6 of the is stably held in the pulled state,
The retractor body 1 is also self-supported.

When the retractor for maintaining muscle stability having the above-mentioned structure is used to hold the gluteus muscle group during rotational acetabular osteotomy in the patient's hip joint, the flea of the flea increases as the osteotomy progresses deeper. You have to turn the handle upwards, so in order not to get in the way,
The fixed end portion 1a and the connection portion 1c of the retractor body 1
Conveniently, the inclination angle between and is about 45 ° and the inclination angle between the handle portion 1b and the connecting portion 1c is about 55 °.

Although the present invention has been described with respect to particular embodiments, it is not limited thereto and those skilled in the art can make numerous changes and modifications without departing from the scope of the invention. It is clear that this can be done. For example, in the illustrated embodiment, the recess 3 of the handle portion 1b for locking the end 4b of the steel wire 4 is rectangular, but the steel wire 4 is prevented from coming off and the locking of the steel wire is more reliable. For this reason, it is possible to provide an appropriate locking device or to form a locking groove in the recess 3.

[0012]

EFFECTS OF THE INVENTION According to the retractor for maintaining muscle stability of the present invention, a steel wire is passed through the tubular piece of the tip fixing portion of the retractor body, one end of which is pierced and fixed in the bone at the incision site of the patient, By simply bending the steel wire and using it to lock the other end into the recess of the handle, the muscles at the incision site can be held constantly and stably, so the retractor body during surgery Even if the assistant does not hold it, a sufficient and stable field of view of the incision site of the patient can be secured, which can contribute to shortening the operation time and can significantly reduce the labor of the assistant. Have good profits.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a retractor for maintaining muscle stability according to the present invention.

FIG. 2 is a perspective view of another embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a usage state of the retractor of the present invention.

[Explanation of symbols]

 1 Retractor body 1a Tip fixing part 1b Handle part 1c Connecting part 2, 2'Tubular part piece 3 Recessed part 4 Steel wire 5 Incision part 6 Muscle 7 Bone

Claims (5)

[Claims] 1. A bent plate-shaped retractor body having a pair of tubular pieces fixed to one end and concave portions formed on both side surfaces of an intermediate portion, and the tubular piece is inserted through the retractor main body. A retractor for maintaining muscle stability, comprising a pair of steel wires which are inserted into and fixed to a human bone and whose other end is locked in the recess. 2. The retractor according to claim 1, wherein the retractor body has a tip fixing portion to which the pair of tubular portions are fixed, a handle portion in which the recess is formed on both side surfaces, and both portions. A retractor which is composed of a connecting portion that connects these at an angle to each other. 3. The retractor according to claim 2, wherein the pair of tubular parts are arranged in an eight-shape inclining to each other. 4. The retractor according to claim 2, wherein the pair of tubular portions are arranged in an inverted eight-shape inclined with respect to each other. 5. The retractor according to claim 2, wherein an inclination angle between the tip fixing portion and the connecting portion is about 4.
The retractor is 5 °, and the inclination angle between the handle portion and the connecting portion is about 55 °.