Medical spiral tube forming tool

Abstract

To provide a forming tool that makes it possible to readily form a sterilized medical spiral tube and can be easily handled anywhere.SOLUTION: A forming tool comprises a cutter holder 1, a cutter 2, and a cutter-stop bolt 3 and is of a portable size. A medical tube is inserted into the cutter holder 1 to rotate it, allowing formation of a spiral tube. Each of the components is made from stainless steel.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a spiral tube forming tool for medical use, which forms a spiral tube for medical use. [Background technology]

[0002] Surgery for aortic arch aneurysm near the heart involves replacing all blood vessels, including the three branching blood vessels that run from the aorta to the brain, with artificial blood vessels. The artificial blood vessels used consist of a thick main vessel with four thin branch tubes attached in advance. When the artificial blood vessel is suturing to the actual blood vessel, these four thin branch tubes obstruct the view in the narrow surgical field.

[0003] For this reason, a spiral tube is used to bundle the main tube of the artificial blood vessel and four thin branch tubes and suture them, after which they become unnecessary, but if the spiral tube is used it can be easily removed. However, since there are no medical spiral tubes, the medical tube is cut with scissors to form a spiral tube. In this case, the cutting is done with the tip of the scissors, which makes it difficult to cut cleanly, requires a lot of force, takes time, and is difficult to work with. Although surgery for aortic arch aneurysms near the heart has been given as an example, the spiral tube, which can be bundled when necessary and removed when not, is of great medical value in other surgeries as well. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2009-136086 A [Patent Document 2] JP 2004-58236 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, the spiral tube manufacturing apparatuses disclosed in Patent Documents 1 and 2 are used for bundling or protecting wires such as electric wires and various hoses, or for electrical shielding, and are configured to require large facilities.

[0006] Furthermore, for medical use, they must be sterilized before surgery to prevent harm to the human body, but this is difficult to accomplish in a short period of time.

[0007] As described above, it has been difficult to use conventional spiral tubes for medical purposes. The present invention is intended to solve the above problems. That is, the object of the present invention is to provide a medical spiral forming tool that can utilize sterilized medical spiral tubes that are easily available at surgical sites and can form medical spiral tubes that are inexpensive and easy to work with. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention has been completed by making the medical spiral tube forming tool smaller, facilitating spiral formation during cutting, and reducing the operating force required during cutting.

[0009] The medical spiral tube forming device of the present invention comprises a cutter holder (1), a cutter (2), and a cutter fixing bolt (3). The medical tube (3A) is screwed into the cutter holder (1), and the outer circumference of the cutter holder (1) is held by hand. and The medical tube (3A) is structured so that a medical spiral tube (3B) can be formed by rotating it relatively.

[0010] The cutter holder 1 will now be described. A medical tube passage hole 1C is provided in the center, and the inside diameter is set to a size large enough to allow the medical tube 3A to pass through smoothly. In order to allow for smooth passage, it is also effective to apply a fluorine coating to the medical tube passage hole (1C) to reduce friction with the medical tube (3A) and improve operability. The cutter blade (2A) is installed so as to protrude from the rear of the medical tube passage hole (1C). The rear of medical tube passage hole (1C) refers to a location located further back than the side where medical tube (3A) is screwed in.

[0011] The cutter (2) consists of a blade (2A) and a bolt fixing part (2B), and is fixed by a cutter fixing bolt (3). This makes it easy to replace the cutter (2) or sharpen the cutter blade (2A) when it becomes dull. Furthermore, the cutter blade (2A) is provided at a position offset from the center of the medical tube passage hole (1C), i.e., the center is located forward in the direction of rotation of the medical tube (3A). Furthermore, it is possible to select the optimum shape depending on the material, shape, and thickness of the medical tube (3A); however, it was found that by shaping the cutter blade (2A) to have a straight section (2C) and an arcuate section (2D) in that order from the apex angle of the blade, the cutting resistance during formation of the medical spiral tube (3A) can be reduced, enabling the spiral tube to be obtained more smoothly.

[0012] In addition, in terms of the materials of the cutter holder (1), cutter (2), and cutter locking bolt (3), since the medical spiral tube (3B) is mainly used in operating rooms and spiral tubes are formed flexibly in operating rooms, it is preferable that the entire medical spiral tube forming tool can be sterilized. For this purpose, metals, highly heat-resistant resins, etc. can be used as materials, but stainless steel is the most preferable material. Effect of the Invention

[0013] The medical spiral tube forming device of the present invention comprises a cutter holder (1), a cutter (2), and a cutter fixing bolt (3), and is lightweight, easy to carry, and can be used anywhere. In addition, all of the materials used are stainless steel, which facilitates sterilization and allows the spiral tubes (3B) required for medical use to be formed on the spot in the operating room.

[0014] The cutter holder (1) has a medical tube hole (1C) in the center, and the inner surface of this hole is fluorine-coated to reduce friction with the medical tube (3A) and improve operability. In addition, a cutter positioning groove (1A) for fixing the cutter (2) and a female screw part (1B) for fixing the cutter are provided on the tube outlet side (rear). Furthermore, a spiral groove (1D) is added to the outer periphery to make it easier to hold by hand and to facilitate operation. It is an effective means to shape the cutter blade (2A) to have a straight portion (2C) and an arc portion (2D) in that order from the apex angle of the blade so that the medical tube (3A) can be stably cut in a spiral shape. In addition, a bolt fixing portion (2B) for fixing the cutter (2) is provided, making it possible to easily replace the cutter (2). [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 shows a medical spiral tube forming device according to a first embodiment of the present invention, where FIG. 1(A) is a plan view, FIG. 1(B) is a side view, and FIG. 1(C) shows a ZZ cross section of FIG. 1(A). [Diagram 2] FIG. 2 is a diagram explaining the functions of the components of the medical spiral tube forming tool of the present invention, where FIG. 2(A) is a plan view of the cutter holder 1, FIG. 2(B) is a plan view of the cutter (2), FIG. 2(C) is a YY cross-sectional view of FIG. 2(B), and FIG. 2(D) is an arrow X-view of FIG. 2(B). [Diagram 3] FIG. 3 shows a diagram of a spiral tube (3B) being formed using the medical spiral tube forming device of the present invention. [Figure 4] FIG. 4 is a diagram of an artificial blood vessel (4A) used in aortic arch aneurysm surgery. FIG. 4(A) is a schematic diagram of the artificial blood vessel (4A) installed after the diseased area has been removed, and FIG. 4(B) shows an overall view of the artificial blood vessel. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings and figures as necessary. However, these embodiments are merely examples and are not intended to limit the present invention. In the drawings, the same or corresponding parts are designated by the same reference numerals, and duplicate explanations are omitted. Furthermore, the dimensional ratios of the drawings are not limited to those shown in the drawings.

[0017] (First embodiment) FIG. 1 shows a medical spiral tube forming device according to a first embodiment, where FIG. 1(A) is a plan view, FIG. 1(B) is a side view, and FIG. 1(C) is a ZZ cross-sectional view of FIG. 1(A).

[0018] Fig. 2 shows the functions of the components in Fig. 1. As shown in the figure, the medical spiral tube forming device according to the first embodiment comprises a cutter holder (1), a cutter (2), and a cutter locking bolt (3), and the cutter holder (1) is provided with a positioning groove (1A) for the cutter (2), a cutter locking female thread portion (1B), a spiral groove (1D) for facilitating the rotational operation of the cutter holder (1), and a medical tube passing hole (1C) in the center. The inner surface of this medical tube passing hole (1C) is fluorine coated to reduce resistance due to friction with the medical tube (3A). The cutter (2) includes a blade (2A) for cutting the medical tubing (3A) and a bolt fixing portion (2B) for fixing the cutter (2).

[0019] More specifically, the medical spiral tube forming tool threads a medical tube (3A) into the medical tube passage hole (1C) in the center of the cutter holder (1), places a finger in the spiral groove (1D) on the outer periphery of the cutter holder (1), and rotates the cutter holder (1) and the medical tube (3A) relative to one another, thereby forming a stable medical spiral tube (3B) with the blade (2A) of the cutter (2) having a straight portion (2C) and an arc portion (2D).

[0020] Conventional spiral tube forming tools are used to bundle electric wires and tubes and are manufactured in fixed facilities, and there are no portable tools.

[0021] The spiral tube forming tool of the present invention is made of stainless steel, which is advantageous for sterilization treatment, is lightweight and easy to carry, and uses medical tubes (3A), so it is easy to form medical spiral tubes (3B) that are not harmful to the human body, thereby solving the problem. [Explanation of symbols]

[0022] 1···Cutter holder 2. Cutter 3. Cutter lock bolt 1A···Cutter positioning groove 1B: Cutter stopper female screw part 1C Medical tube hole 1D spiral groove 2A...Blade 2B Bolt fixing part 2C...Straight section 2D...Circular section 3A Medical Tube 3B Medical spiral tube 4A...Artificial blood vessel 4B: Aorta 4C...Artificial blood vessel main pipe 4D...Artificial vascular branch tube

Claims

[Claim 1] A medical spiral tube forming tool comprising a cutter holder having a medical tube passage hole in the center for inserting a medical tube, a cutter, and a cutter fixing bolt, the medical tube being hollow, the medical tube being threaded into the medical tube passage hole in the center of the cutter holder, and the cutter holder and the medical tube being rotated relative to one another to form a spiral tube, a cutter positioned at the rear of the medical tube passage hole, having a blade and a bolt fixing portion protruding from the inner diameter of the medical tube, the cutter blade being positioned offset from the center of the medical tube passage hole, the shape of the cutter blade having a straight portion and an arc portion in that order from the apex angle of the blade, and a spiral groove added to the outer periphery of the cutter holder.

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