JPS6015562Y2 - Syringe - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates primarily to improvements in syringes used during dental anesthesia.

As is well known, injections during anesthesia in dental treatment often require strong pressure, especially when using cartridge-type syringes. Difficult to inject into the field.

This requires the operator to have considerable grip strength.

By the way, in dental treatment, such injection treatment activities account for a large part of the daily work of busy surgeons, and cause a great deal of fatigue on the hands and fingers of the surgeons. However, it was often difficult to administer the correct injection, especially in the afternoon when fatigue accumulated.

In addition, the operator is required to have considerable skill and careful consideration when injecting the injection into a predetermined site accurately.

It is desirable to eliminate this accumulation of fatigue as much as possible.

Therefore, the object of the present invention is to provide an easy-to-operate syringe that minimizes the accumulation of fatigue.

Embodiments of the present invention will be described below based on the drawings.

1 is a cylindrical syringe body having a see-through window on the upper circumferential wall and a through hole in the lower circumferential wall for loading a cartridge containing an injection drug;
It has a spiral tube portion at its tip and rear end, and a needle attachment portion 2 is screwed into the screw tube portion at the tip, and a cap body 3 is screwed into the screw tube portion at the rear end.

A recess 4 is provided on the outer peripheral surface of the threaded portion of the cap body 3 and the main body 1, into which a protrusion 11 of a finger hook tube 10 of the present invention, which will be described later, is fitted.

A stopper 5 is fitted into the stepped portion 1b at the rear of the hollow portion 1a of the main body 1, and a coil spring 6 is interposed between the stopper 5 and the hollow portion of the cap body 3.

7 is a plunger with a handle 8 screwed onto its rear end;
hollow part 1a, stopper 5, spring 6 and cap body 3
It is inserted so that it can be slidably contacted.

The structures of these syringes are conventionally known techniques.

Therefore, the present invention is to improve the finger hook tube body that rotatably fits into the main body 1 and the cap body 3.

The finger hook tube 10 has a hollow shape, and a protrusion 11 that fits into the above-mentioned screw recess 4 is provided on the inner circumferential surface of the finger hook tube 10 at an opposing portion of the outer circumferential surface and at the front of the finger hook tube 10. , a multi-stage holder portion 12 is provided protruding from the rear end.

Note that the shape and number of the holder portions 12 are not limited, and the number may be at least two pairs or more.

In addition, the shape is as shown in Fig. 4, where the front and rear holders 12 and 12 at the lower end are continuous, and as shown in Fig.
The lower front and rear holder portions 12 and 12 may be continuous.

This continuous ring shape makes it convenient to hold and manage the syringe.

Reference numeral 13 denotes a notch provided at a position approximately 90 degrees from the holder portion 12, and when loading the cartridge into the hollow portion 1a of the main body 1, the finger hook tube 10 is rotated and aligned with the through hole of the main body 1. This is to facilitate the insertion.

Note that although the cutout portions 13 are shown only on one side, they may be provided on both sides so as to face each other.

In this case, pull the handle 8 backward and press the stopper 5 with the bulging head of the plunger 7. Then, insert the cartridge and release the handle 8. The elasticity of the spring 6 moves the stopper 5 forward and presses the cartridge. .

To explain how to use the present invention, as mentioned above, after sticking the needle of the syringe loaded with the cartridge into the affected area, first touch the palm of the hand to the needle 8 located at the rearmost position, and press the pair of holders at the rear end. Place your index finger and middle finger on part 12.12.

Then, press the handle 8 with your palm to move the tip of the plunger 7 to approximately 273 of the main body 1, then place your index finger and middle finger on the pair of holder parts 12 and 12 at the tip, and press the handle 8 further. It is possible to inject the medicine filled in the cartridge to the last drop in an extremely stable manner without requiring much grip strength, which greatly reduces the fatigue of the surgeon's hands and fingers. It is very helpful.

9 in the figure is a sheath tube that is fitted between the main body 1 and the finger hook tube body 10.

Note that the finger hook tube body 10 can be easily attached and detached by removing the cap body 3.

The present invention has a structure in which a finger hook tube 10 having a multi-stage holder part 12 is loosely fitted into a conventionally known cartridge type syringe, so that the holder part 12 can be selected as appropriate depending on the injection process. It does not require much grip strength, and injection operations can be performed in a stable state.

Therefore, it has the effect of reducing the physical and mental fatigue of the user.

In addition, the medicine in the cartridge no longer remains,
It is truly economical.

Since the pair of multi-stage holder parts 12 are located at the extreme ends of the main body 1, even if the handle 8 is located at the rearmost part, the distance between the handle 8 and the holder part 12 is short, making it easier for operators with small hands. However, it can be easily injected.

Furthermore, since the finger hook tube 10 is rotatably fitted into the main body 1 etc., even when it is necessary to rotate the syringe according to the direction of the needle when inserting the needle into the insertion point, the finger hook tube 10 can be rotated. Since the body 10 rotates, the handle 8 and the holder part 12 are always in a straight line, making it very easy to use.

Therefore, if the conventional holder part and syringe barrel body are integrated and the holder part and handle are always used in a straight line, the needle must be rotated in accordance with the insertion point. In contrast, the present invention does not require such troublesome operations, and is an extremely easy-to-use syringe that is stable and stable. It has the effect of allowing injections to be performed while in the current state, reducing physical and mental fatigue on the part of the operator.

Further, since the notch 13 is provided at a position approximately 90 degrees from the holder portion 12, filling of the cartridge becomes easy.

Furthermore, since the finger hook tube 10 of the present invention is detachable from the main body and the cap body, it has many practical effects such as being compatible and very economical.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a partially cutaway side view, Fig. 2 is a plan view, Fig. 3 is a perspective view of the finger hook tube, and Figs. 4 and 5. FIG. 3 is a side view of main parts showing another embodiment. 1...Main body, 2...Needle attachment part, 3...
... Cap body, 4 ... Concavity, 5 ...
...Stopper 7...Plunger, 10...
...Finger hook tube body, 11...Protrusion, 12...
... Part of the holder, 13 ... Notch.

Claims (1)

[Scope of utility model registration request] In a syringe in which a cylindrical syringe body has a needle attachment part at the tip and a cap body screwed onto the rear end, and a plunger slides through the hollow part of the body when the handle is operated, the plunger loosely fits into the threaded recess between the body and the cap body. A protrusion is provided on the inner circumferential surface, and a part of the multi-stage holder is provided on the outer circumferential surface, and a finger hook tube body having a cutout part at approximately 90 degrees from the part of the holder is provided, and the main body and A syringe consisting of a cap body with a finger-hook tube body that is rotatably and removably fitted.