JP2017205314A - Finger fastener and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a finger fastener that can be easily attached and adjusted by a wearer personally.SOLUTION: The finger fastener includes: a cylindrical body composed with a metal having hardness that can be deformed manually; a slit-like separation part that can be receded continuously from one end to the other end of the cylindrical body; and an opening that is provided in a region of a wall face different from the slit-like separation part. The slit-like separation part is formed so that the area of the inner space of the cylindrical body can be varied. The cylindrical body is composed of tin having a purity of 97 wt% or higher. The slit-like separation part is curvedly continuous from one end to the other end of the cylindrical body.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a finger fixing device that fixes a joint portion of a finger, and a finger fixing device manufacturing method.

  For example, Patent Document 1 discloses an orthodontic appliance made of tin or a tin alloy and including a plurality of base plates and a plurality of support plates.

JP 2008-36329 A

  An object of the present invention is to provide a finger fixing tool that the wearer can wear relatively easily.

  A finger fixing device according to the present invention is provided on a cylindrical body made of a hard metal that can be deformed by hand force, and on a wall surface of the cylindrical body, from one end of the cylindrical body to the other A slit-shaped separation portion that can be continuously separated to the end portion, and an opening provided in a region of the wall surface that is different from the slit-shaped separation portion. The size of the inner space can be changed.

  Preferably, the cylindrical body is made of tin having a purity of 97 wt% or more, and the slit-like separation portion is continuous while curving from one end portion of the cylindrical body to the other end portion.

  Preferably, the opening is provided on a wall surface at a position facing the slit-like separation portion, and the cylindrical body is made of an alloy containing 99 wt% or more of tin and 0.5 wt% or less of silver. ing.

  Preferably, the slit-like separation portion is continuous in an oblique direction with respect to the axis of the cylinder from one end to the other end of the cylinder.

  Preferably, the inner diameter of the cylinder is about the same as the thickness of a finger of a human hand, and is used for fixing a finger of a Heberden knot.

  Further, a finger fixing device according to the present invention is provided on a cylindrical body made of a hard metal that can be deformed by hand force, and a wall surface of the cylindrical body, from one end of the cylindrical body A slit-like separation portion that can be continuously separated to the other end portion, and the slit-like separation portion is oblique to the axis of the cylinder from one end portion to the other end portion of the cylinder body It is continuous.

  In addition, the method for manufacturing a finger fixing device according to the present invention includes a step of forming a metal plate having an opening provided with a metal having hardness that can be deformed by hand force, and the formed metal plate is formed into a cylindrical shape. And a step of deforming.

  According to the present invention, it is possible to provide a finger fixing tool that the wearer can wear relatively easily.

It is a figure which illustrates finger fixing tool 1 in the state where it was equipped with a person's finger. It is a figure which illustrates the positional relationship of the opening part 12 of the finger fixing tool 1, and the 1st joint of a finger. It is a flowchart (S10) which illustrates the manufacturing method of the finger fixing tool 1. FIG. It is a figure which illustrates the metal plate. It is a figure which illustrates the bending process of the metal plate.

[background]
First, the background of the present invention will be described.
The idea of the present invention was born in the process of studying a therapeutic device for Heberden nodule. The Heberden nodule is a disease in which the joint surface of the first joint (DIP joint) of the fingers is worn and deformed, resulting in limited range of motion and pain. Although the cause is still unknown, it has been pointed out that it is related to exertion, and it is said that it often occurs in women in their 40s.
The prevalence of Heberden's nodule is high and has been reported to reach 30% in the general population. However, there is no definitive treatment method for Heberden's nodule, and it is generally treated with local rest or topical drugs.

In order to achieve local rest, external fixation with various materials is performed. For external fixation, fixtures called aluminum or plastic cine, various appliances, tapes, etc. are used.
With external fixation, the deformed joint cannot be restored, but it is possible to soothe local inflammation and reduce pain.

  However, problems such as pruritus, discomfort and bad odor associated with external fixation have not yet been solved. In addition, the cine and the orthosis are inferior in terms of trimming, and there are problems in appearance when worn. In addition, it is often time-consuming to wear, and treatment by external fixation is a high threshold for patients.

  Therefore, the inventors of the present application pay attention to the bactericidal action, deformability, and texture of tin, are hygienic, can be bent and deformed by hand force, have resistance to repeated bending deformation, and have a design. Developed the finger fixing device 1 with the characteristics. About bactericidal action, it has a sufficient bactericidal action against Staphylococcus aureus and Escherichia coli by an alloy of tin and silver. On the other hand, it has no cytotoxicity. The deformability was optimized by searching for an easy-to-adjust shape while finely adjusting the silver content. And from the viewpoints of designability, resistance to bending deformation, and ease of adjustment, various functions were incorporated with a simple shape. Also in the resistance test, it is confirmed that it can withstand bending deformation of about 150 times, and it is considered that the possibility that the finger fixture 1 breaks during the external fixation period is extremely low.

Hereinafter, a finger fixture 1 according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram illustrating a finger fixing tool 1 in a state of being attached to a human finger.
As shown in FIG. 1, the finger fixing tool 1 includes a cylindrical body 10, an opening portion 12 provided on the wall surface of the cylindrical body 10, and a slit-like separation portion 14 provided on the wall surface of the cylindrical body 10.
The cylinder 10 has an inner diameter that is substantially the same as the thickness of the finger and has the same cross-sectional shape of the finger. For example, the cylinder 10 has a cylindrical shape with a circumference of 40 mm to 60 mm, and both ends of the cylinder are open. The wearer inserts a finger joint into the inner space of the cylinder 10 as illustrated in FIG.

The cylinder 10 is made of a metal having a hardness that can be deformed by hand force. For example, the cylinder 10 is made of tin having a purity of 97 wt% or more. More specifically, the cylinder 10 is made of an alloy containing 99 wt% or more of tin and 0.5 wt% or less of silver. The cylinder 10 of this example is made of an alloy containing 99 wt% or more of tin and 0.01 wt% or more and 0.50 wt% or less of silver. If the silver content exceeds 1.0 wt%, the alloy becomes too hard and it becomes difficult for the wearer to deform it with the power of the hand. On the other hand, if the silver content is less than 0.01%, the alloy is too soft and may deform during wearing and fall off the finger.
Considering that the wearer deforms the shape of the cylinder 10 with his / her own force so as to match the shape and thickness of the finger, the plate thickness of the cylinder 10 is 1.5 mm to 2.5 mm, and silver is 0. It is desirable to be made of 0.01 wt% to 0.50 wt% of a tin alloy.
The cylinder 10 of this example has a plate shape with a plate thickness of about 2.0 mm and a length of 1.5 cm to 2.5 cm.

The cylindrical body 10 can be expected to have a bactericidal action by being composed of an alloy of tin and silver. The bactericidal action of tin is suitable for the human body because it sufficiently acts against S. aureus and E. coli and has no cytotoxicity.
In addition, the alloy of tin and silver has a metallic luster and, in combination with a simple design, realizes an appearance like a decorative tool.

As illustrated in FIG. 1A, an opening 12 is provided on the wall surface of the cylinder 10. The opening 12 in this example is an opening having the same diameter as the thickness of the finger. Note that a plurality of openings 12 smaller than this example may be provided.
The opening 12 functions as an outlet for moisture, steam, and the like, and enables hand washing while the finger fixing device 1 is worn. Furthermore, as shown in FIG. 2, the function as a relief space of the finger joint can be expected, and discomfort due to excessive finger restraint can be suppressed.

As illustrated in FIG. 1B, the slit-like separation portion 14 is provided at a position facing the opening 12.
As illustrated in FIG. 1C, the slit-like separation portion 14 is a slit-like separation space that can be continuously separated from one end portion of the cylindrical body 10 to the other end portion. The size of the interior space can be changed. Since it is a slit-shaped separation space, the end portions on the separation space side of the wall surface of the cylinder 10 are locally substantially parallel to each other with the slit-shaped separation portion 14 interposed therebetween.
The slit-like separation portion 14 of this example is continuous in an oblique direction with respect to the axis of the cylinder 10 from one end of the cylinder 10 to the other end while being curved. When the slit-like separation portion 14 is provided in an oblique direction with respect to the axis of the cylinder 10, the vine is wound around the finger, so the slit-like separation portion is provided in parallel with the axis of the cylinder 10. Compared with the case where it is made, even if the slit-shaped separation part 14 is expanded, it becomes difficult to drop off from the finger.

  As described above, the finger fixing device 1 according to the present embodiment adjusts the width and shape of the inner space of the cylinder 10 by opening and closing the slit-shaped separation portion 14 while using the cylinder 10 as a basic skeleton. Can be easily attached and detached with one hand. Further, since there are relatively few deformation parts for adjustment, accumulation of metal fatigue due to bending can be suppressed. In addition, it has a simple design like a ring and is excellent in design.

Next, a method for manufacturing the finger fixture 1 will be described.
FIG. 3 is a flowchart (S <b> 10) illustrating the method for manufacturing the finger fixture 1.
As shown in FIG. 3, in step 100 (S100), a molten tin alloy is poured into a previously prepared mold to form a metal plate 2 (metal plate) illustrated in FIG. More specifically, a molten tin alloy is poured into a casting silicon mold to create a cast product, the created cast product is taken out of the silicon mold, and the injection port portion is cut with a nipper or the like. Let it be plate 2. As illustrated in FIG. 4, the metal plate 2 is a metal plate provided with an opening 22. At both ends of the metal plate 2, rotationally symmetric shaped protruding regions 24 (a protruding region 24A protruding from the lower left and a protruding region 24B protruding from the upper right) are provided at rotationally symmetric positions. When the metal plate 2 is deformed into a cylindrical shape, these protruding regions 24 are adjacent to each other to form the slit-shaped separation portion 14. The protrusion amount of the protrusion region 24 is, for example, about 5 mm to 13 mm.

  In step 110 (S110), as illustrated in FIG. 5, the formed metal plate 2 is bent into a cylindrical shape to obtain a finger fixture 1. More specifically, as illustrated in FIG. 5B, the metal plate 2 is pressed against a rod-like member 7 having a thickness of a finger and deformed into a cylindrical shape. The rod-shaped member 7 simulates the shape or size of a finger, and is, for example, a columnar member having a diameter of about 18 mm.

By manufacturing the finger fixing device 1 in this manner, a highly accurate product can be efficiently produced.
Alternatively, the finger fixing device 1 may be completed by delivering it to a sales place (for example, a hospital or a store) in the state of the metal plate 2 and deforming the metal plate 2 into a cylindrical shape at the sales place. The planar metal plate 2 is easier to transport than the cylindrical finger fixture 1. Moreover, the finger fixing tool 1 can be completed on demand according to the shape and size of the wearer's finger.

DESCRIPTION OF SYMBOLS 1 Finger fixing tool 2 Metal plate 10 Tubular body 12 Opening part 14 Slit-like separation part

Claims (7)

A cylindrical body made of a hard metal that can be deformed by hand force;
A slit-like separation portion that is provided on the wall surface of the tubular body and can be continuously separated from one end portion of the tubular body to the other end portion;
An opening provided in a region different from the slit-shaped separation portion of the wall surface,
The slit-like separation portion is formed so as to be able to change the size of the inner space of the cylindrical body. The cylinder is made of tin having a purity of 97 wt% or more,
The finger fixing tool according to claim 1, wherein the slit-like separation portion is continuous while curving from one end portion of the cylindrical body to the other end portion. The opening is provided on a wall surface at a position facing the slit-like separation portion,
The finger fixing tool according to claim 2, wherein the cylindrical body is made of an alloy containing 99 wt% or more of tin and 0.5 wt% or less of silver. The finger fixture according to claim 3, wherein the slit-like separation portion is continuous in an oblique direction with respect to an axis of the cylinder from one end of the cylinder to the other end. The inner diameter of the cylinder is about the same as the thickness of a finger of a human hand,
The finger fixing tool according to claim 1, wherein the finger fixing tool is used for fixing a finger of a Heberden nodule. A cylindrical body made of a hard metal that can be deformed by hand force;
A slit-shaped separating portion that is provided on the wall surface of the tubular body and can be continuously separated from one end of the tubular body to the other end;
The slit-shaped separation portion is continuous in an oblique direction with respect to the axis of the cylinder from one end of the cylinder to the other end. Forming a metal plate having an opening with a metal having a hardness that can be deformed by hand force; and
And a step of deforming the formed metal plate into a cylindrical shape.

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