JP2009247617A - Handling implement of small article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a handling implement capable of easily handling a small article despite an extremely simple mechanism without requiring an operation applying a stress load such as tweezers. <P>SOLUTION: This handling implement has a tubular part 2 capable of holding a small article at least at one end of a rod-like body 1, wherein the tubular part 2 has flexibility capable of freely attaching/detaching the small article and has an opening part 3 and a back part 4 facing each other, the opening part 3 allows the insertion of the small article into the tubular part 2, and the back part 4 abuts on the small article and retains there. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to a small article handling tool that is simple for moving small parts and objects instead of tweezers.
In particular, in dental treatment, the present invention relates to an attachment device for planting a post for reinforcing retention of a filler in a small hole formed in the crown when filling a crown, such as a resin or amalgam, into a dental crown that is significantly disintegrated. Is.

Traditionally, tweezers were mainly used for medical-related surgery, especially for small objects such as dental abutment building posts and gutta-percha, and fine work such as moving, fixing, and removing precision parts such as semiconductors. .
Therefore, for example, Patent Document 1 discloses a mounting tool for a screw-shaped dental post, Patent Document 2 discloses a small article handling tool using an adhesive material, and Patent Document 3 discloses a tubular tool inside tweezers. Each of which a gutter percha point is loaded in a recess and connected to an API carrier is disclosed.
Japanese Utility Model Publication No.2-1967 JP-A-8-197449 JP 2007-307341 A

However, since tools such as tweezers need to continue to apply force to the fingers while continuing to grip the accessory, there is also mental stress that requires attention so as not to remove it, other than muscle fatigue of the fingers There was a problem. Furthermore, with tweezers and the like, the holding is unstable because it is basically supported at two points. Accordingly, there has been a demand for a handling tool that can easily move or fix small parts and objects.
The invention disclosed in Patent Document 1 specializes in the handling of screw-type dental posts, and must be said to be incompatible with ordinary non-screw-type dental posts. The invention disclosed in Patent Document 2 is inferior in the holding stability of small items attached to an adhesive material and in handling properties when small items are placed on a predetermined affected part. In the invention disclosed in Patent Document 3, it does not leave the area of tweezers.
The present invention solves these problems and provides a small-sized tool for handling small parts and objects instead of tweezers.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a handling tool that can easily handle small items with an extremely simple mechanism without requiring an operation requiring a stress load as described above.

In order to achieve the above object, the present invention provides:
At least one end of the rod-shaped body has a cylindrical portion capable of holding small items, and the cylindrical portion is flexible so that small items can be freely attached and detached, and has an opening and a back portion at positions facing each other. The opening is configured to allow a small article to be inserted into the cylindrical portion, and the back portion includes a small article handling tool that can be placed in contact with the small article.

  By using the accessory handling tool of the present invention, the operator can freely handle the accessory without consuming nerves and muscles to grip the accessory, and can concentrate on the original treatment. In addition, the probability of occurrence of a failure or trouble such as dropping a gripped accessory or failing to place it at a predetermined position can be significantly reduced.

  The present invention is described in detail below. Hereinafter, the accessory handling tool of the present invention will be described with reference to the accompanying drawings as appropriate.

As shown in FIG. 1 as an example of the overall image of the present invention, a rod-shaped body having a cylindrical portion is shown at least at one end. Although FIG. 1 shows an example in which only one side has a cylindrical portion, another cylindrical portion may be provided at the other end, and the characteristics such as thickness and length of both cylindrical portions in that case are the same. It can be different.
The rod-shaped body is easy to handle if the handling tool can be gripped with fingers easily and the distance between the handling finger and the operation target can be kept moderate so that it can be easily observed for operation. As long as there is no hindrance, the shape and size are not particularly limited.

The total length of the rod-shaped body including the cylindrical portion is preferably 4 to 28 cm, more preferably 8 to 23 cm, and still more preferably 12 to 18 cm. If the value is below the lower limit of the numerical range, it is difficult to grasp with a finger, and the finger is too close to the operation site, which is unfavorable for handling and observation. On the other hand, if the upper limit is exceeded, the length becomes rather obstructive and it becomes difficult to operate.
The thickness of the rod-shaped body is preferably 0.3 to 1.0 cm, more preferably 0.4 to 0.9 cm, and still more preferably 0.5 to 0.8 cm. Outside of the numerical range, it is difficult to grip with fingers, which is not preferable.
The cross section of the rod-like body is preferably a circle, an ellipse, a hexagon or more polygon. The long axis of the rod-shaped body is preferably substantially straight. However, as shown in FIG. 1, it is preferable that the rod-like body bend in a substantially “h” shape near the tip having a cylindrical portion. It is preferable that the cylindrical portion bends 40 to 50 degrees from the long axis of the rod-shaped body. Further, as shown in FIG. 1, it is preferable that the tip end portion is tapered and is not particularly limited, but the thickness of the tip end portion is preferably about the outer diameter of the cylinder portion.

An example of the present invention is shown in FIG. The cylindrical portion has moderate flexibility so that small items can be freely attached and detached. As shown in FIG. 2, the cylindrical portion has an opening and a back portion at positions facing each other. The opening can allow small articles to be inserted into the cylinder, and if necessary, may be provided with a taper that widens toward the outside so that it can be easily inserted. The inner part can be placed in contact with small items. That is, the small object does not enter the deep part as much as possible, and stays at an appropriate insertion depth. In this case, the back portion may be a dead end dead end and may have a structure in which it hits directly from the front of the accessory, or may have a structure in which a constricted portion is formed and stuck in the middle. The deep portion of the narrowed portion may be a dead end dead end or may be in communication with another opening.
The length of the cylindrical portion, in other words, the insertion depth when an accessory having a substantially cylindrical shape having an outer diameter equal to the diameter of the opening abuts on the inner portion is preferably 0.5 to 10 mm, more preferably It is 1-4 mm, More preferably, it is 1.5-2 mm. The inner diameter of the cylindrical portion is preferably 0.3 to 6 mm, more preferably 0.5 to 3 mm, and still more preferably 0.75 to 1.6 mm.

In FIG. 2, the tip portion of the rod-like body has a tip portion narrow diameter portion 1 ′ that is further narrowed in steps, and a short synthetic resin small diameter pipe is fitted therein to form a cylindrical portion 2. It is a configuration. In this case, the pipe is fixed at the fitting portion 2 ′ at the portion of the rod-like body and the tip small diameter portion 1 ′. Further, the end portion of the tip small-diameter portion 1 ′ forms a back path-shaped back portion 4 and faces the opening 3.
In addition, since the accessory handling tool of the present invention can reduce the manufacturing cost and can be disposable, it is preferable that the accessory handling tool has substantially no other complicated mechanism for holding and attaching / detaching the accessory. Here, the other mechanism means other than the flexibility of the cylinder part, for example, pinching, tightening or contracting to change the contact pressure with the inner diameter or the small part of the cylinder part. It is a mechanical or electrical engineering mechanism. Alternatively, the deformation is beyond elastic deformation such that the cylinder part opens and closes (divides and merges) like a ridge.
The accessory handling tool of the present invention is capable of holding and detaching accessories only by the flexibility of the cylindrical portion. That is, the stress exerted from the rod-like body to the cylinder portion by connecting the cylinder portion to the rod-like body and the stress between the cylinder portion and small items (or small items inserted into the operation portion), or the cylindrical portion caused thereby Depending on the material tensor.
As for the hardness of a cylinder part, durometer A hardness becomes like this. Preferably it is 15-80, More preferably, it is 20-60, More preferably, it is 25-50. If the value falls below the lower limit of the numerical range, the holding of small articles is hindered, and if the value exceeds the upper limit, desorption becomes difficult, which is not preferable.

The operation and mechanism for attaching / detaching / holding small items will be further described with reference to FIG. In addition, as an accessory, although it demonstrates taking the case of the post for a dental abutment which has a substantially cylindrical shape, it is not limited to this.
First, as shown in FIG. 3A, the post is inserted straight into the cylindrical portion. If a cylindrical portion that matches the size of the post is selected in advance, it can be inserted into the cylindrical portion without any particularly difficult resistance. At this time, not only the opening portion but also the cylindrical portion may be provided with a taper that extends outward so as to facilitate insertion. Then, even if the dimensions are slightly different, the post can be inserted without much trouble. When inserting the post, the post may be directly picked by fingers, tweezers or the like may be used, or the post may be fixed to the accessory dedicated holder. Alternatively, it is also preferable that at least one of the tube portion and the post is wetted with a harmless liquid such as distilled water or ethanol to improve the sliding.

As shown in FIG. 3B, the inserted post receives a stress of action / reaction (double arrow in FIG. 3B) due to the flexibility or elasticity of the cylindrical portion, and exerts a frictional force that does not fall out. It can be expressed. If necessary, a non-slip groove or protrusion may be provided in the inner lumen of the cylinder.
As shown in FIG. 3C, the cylindrical portion may be tilted when the post is pulled out. That is, the post is inserted into the root canal hole 6 and is semi-fixed by frictional force. In that state, the tube portion is tilted to one side (left side in FIG. 3C, the direction of a single arrow) while maintaining the semi-fixed state by slightly pressing the tube portion against the post, and the other side (in FIG. 3). Relieve the embedding between the cylinder lumen and the post (right side in C). Then, the post can be easily detached from the cylindrical portion. In addition, it is also preferable to hold the post exposed from the cylindrical portion with a tweezer-like instrument having a thin point in order to keep the semi-fixed state during the detachment.

  An inner diameter 0.79 mm, outer diameter 2 cut to 5.0 mm length at one tip of a rod-shaped holder (Angle chip attached to both ends of the holder of “Disposable Brush Exchange System” manufactured by Inoue Attachment Co., Ltd.) .38mm flexible plastic tube ("TYGON AAC00001" manufactured by Saint-Gobain) cut to 5.5mm length at the other tip, flexible plastic tube with inner diameter 1.59mm and outer diameter 3.18mm ("TYGON" manufactured by Saint-Gobain) AAC00002 ”) was fitted, and the handling tools of the present invention were prepared in which the depths of the cylindrical portions were 1.0 mm and 2.0 mm, respectively. In addition, let each cylinder part be the cylinder part A and the cylinder part B, respectively.

  As shown in FIG. 3, a glass fiber post was inserted into the cylindrical portion A. Further, a glass fiber sleeve was inserted into the cylindrical portion B as shown in FIG. In both operations, it was easy to insert the accessory into the handling tool, and it was possible to arrange the accessory at the target position very easily without causing the accessory to fall off or to fall out during the transportation. Also, it was possible to detach small items from the handling tool at the target position without any difficulty.

It is a whole figure of an example of the handling tool of the present invention. It is a fragmentary figure of the cylinder part of an example of the handling tool of this invention. It is the illustrated fragmentary sectional view for demonstrating attachment / detachment and holding | maintenance of the accessory using the handling tool of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rod-shaped body 1 'Tip part small diameter part 2 Tube part 2' Fitting part 3 Opening part 4 Back part 5 Post 6 Root canal hole

Claims (7)

At least one end of the rod-shaped body has a cylindrical portion capable of holding small items. The opening can allow small articles to be inserted into the cylinder, and the back can be placed in contact with small articles. The accessory handling tool according to claim 1, which has substantially no other mechanism for holding and detaching the accessory. The accessory handling tool according to claim 1, wherein the accessory can be held and detached freely only by the flexibility of the cylindrical portion. The accessory handling tool according to claim 1, wherein the durometer A hardness of the cylindrical portion is 15 to 80. 2. The accessory handling tool according to claim 1, wherein the cylindrical portion is detachable from the rod-shaped body. 2. The accessory handling tool according to claim 1, wherein the accessory is a dental member. The accessory according to claim 1, wherein the accessory is a post material for building a dental abutment.

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