JPH0349712Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is designed to remove the needle cap attached to the injection needle to protect it from the injection needle during use, and to attach the needle cap to the injection needle after use. This invention relates to a needle cap attachment/detachment device for a syringe for reapplying a needle cap.

(Prior Art) Most hypodermic injection needles currently used in hospitals and the like are disposable injection needles, and are individually sealed and packaged with a needle cap attached to protect the injection needle. Therefore, when a nurse injects a drug into a patient or performs blood sampling or transfusion, the nurse tears open the packaging, takes out the needle with the needle cap attached, attaches it to the syringe body, and then closes the cap. After the syringe is removed from the needle and the syringe has been used, the needle cap attached to the syringe body is reattached, and both the needle and the syringe body are disposed of as appropriate. .

(Problem to be solved by the invention) As mentioned above, in the past, the needle cap had to be held directly with the fingers in order to remove it from the injection needle or attach it to the injection needle. Sometimes nurses accidentally prick their finger with a hypodermic needle, and this is a fatal problem that can lead to infections such as hepatitis B, which is currently being discussed as a major social problem. .

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a needle cap attaching/detaching tool that allows the needle cap to be attached and detached extremely safely.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a method for removing the needle cap A, which is attached to the injection needle N to protect it, from the injection needle N during use. This attachment/detachment tool 1 is for later attaching the needle cap A to the injection needle N again, and needle cap insertion parts 11a, 26 are formed at the tips of the attachment/detachment tool bodies 2, 22 for inserting the needle cap A therethrough. At the same time, the slide plates 3 and 23 are slidably engaged with the attachment/detachment tool bodies 2 and 22 in the longitudinal direction, and the needle cap insertion portion 11
Needle cap clamping parts 5, 25 are formed between the slide plates 3, 23 and the detachable tool bodies 2, 22 with a, 26 in between, and a spring 6 is provided to bias the slide plates 3, 23 in the needle cap clamping direction. A structure is adopted in which the sliding plates 3, 23 and the detachable tool bodies 2, 22 are provided.

(Example) An example will be explained with reference to the drawings. Fig. 1 is an overall external view of the needle cap attaching/detaching device 1, Fig. 2 is a plan view, Fig. 3 is a vertical sectional view, and Fig. 4 is an exploded perspective view. The figure shows. As is clear from these figures, the attachment/detachment tool 1 includes a main body 2 of the attachment/detachment tool made of synthetic resin and a needle cap insertion portion 11a for inserting the needle cap A into the distal end thereof, and a main body 2 of the attachment/detachment tool 2 in the longitudinal direction. A slide plate 3 made of synthetic resin that is slidably engaged, an operation piece 4 integrally protruding from a required location on the outer surface of this slide plate 3, and a needle cap located at a part remote from this operation piece 4. A needle cap holding part 5 is formed between the slide plate 3 and the attachment/detachment tool main body 2 with the insertion part 11a in between, and a slide plate 3 is interposed between the attachment/detachment tool main body 2 and the slide plate 3.
and a compression coil spring 6 that biases the needle cap in the direction of pinching the needle cap.

The attachment/detachment tool main body 2 has a guide groove 7 having a closed end and an open rear end.
A slide plate 3 shorter than the length of the groove 7 is slidably fitted and held, and an end plate 8 made of synthetic resin is fixed with screws 9 to the rear end of the attachment/detachment tool main body 2. A coil spring 6 is fitted into a hole 10 formed by a groove 10a with a semicircular cross section on the side of the tool body 2 and a similar groove 10b on the side of the slide plate 3, and a coil spring 6 is fitted into the hole 10, and a coil spring 6 is provided integrally with the end plate 8. A guide piece 8a having an arcuate cross section is partially fitted in a slidable manner.

The needle cap holding part 5 consists of engaging recesses 11 and 12 formed opposite to each other at the distal end of the attachment/detachment tool main body 2 and the distal end of the slide plate 3, and the engaging recess 12 on the slide plate 3 side is always open. Since the slide plate 3 is biased by the coil spring 6, it comes close to the engagement recess 11 on the attachment/detachment tool main body 2 side, and can hold the needle cap A between it and the engagement recess 11 from both sides thereof. forming a substantially cylindrical needle cap holding part 5;
Also, by operating the operating piece 4 to push the slide plate 3 toward the end plate 8 side against the bias of the coil spring 6, the engagement recess 12 on the slide plate 3 side is inserted into the opposing engagement recess 12. The needle cap holding part 5 is separated from the recess 11 and becomes ready to open the needle cap A. Further, this needle cap holding part 5 constituted by both engaging recesses 11 and 12 is provided with a side opening 13 for facilitating insertion and removal of the needle cap A into the holding part 5. be. Furthermore, as is clear from FIG.
The inner surfaces of both engaging recesses 11 and 12 are formed in an inclined shape so that the needle cap A is slightly inclined with respect to a line perpendicular to the longitudinal direction of the attachment/detachment tool 1 when the needle cap A is held therebetween.

Next, to explain how to use the attachment/detachment device 1 having the above-mentioned configuration, when using a syringe, first tear the sealed needle packaging bag and remove the needle N attached to it. Take out the entire cap A, hold the needle cap A in your hand, and attach the injection needle N to the needle attachment port O of the syringe main body S. Then, hold the attachment/detachment tool 1 with your left hand as shown in FIG. 4 toward the front with the thumb to widen the needle cap holding section 5, and then insert the proximal end of the needle cap A through the side opening 13 into the needle cap insertion section 11a. If you release your thumb from the operating piece 4 in this state, the needle cap holding part 5 will be in a state where it is holding the needle cap A with the force of the coil spring 6, but this holding force alone is weak, so use your thumb again to move the operating piece 4 to the front side. The needle cap A is held while applying the pressing force of the thumb, and then the needle cap A is pulled out and separated from the injection needle N as shown in FIG. While performing the injection, the needle cap A is left in an appropriate location while being held in the attachment/detachment tool 1. After the injection is finished, hold the attachment/detachment tool 1 holding the needle cap A with your left hand again, while holding the used syringe main body S with your right hand and insert the injection needle N into the attachment/detachment tool from the state shown in Figure 5. The injection needle N is inserted into the needle cap A held at 1, and the needle cap A is attached to the injection needle N. In this case, the thumb and other fingers that push and pull the operation piece 4 can be positioned sufficiently away from the opening of the needle cap A, so that the injection needle N does not prick the thumb or the like. The syringe that has been covered with the needle cap A in this manner may be stored in, for example, a disposal box.

Note that FIGS. 2 and 3 show the state in which the needle cap A is being held by the needle cap holding part 5 of this attachment/detachment tool 1, and as is clear from FIG. Since the needle cap A is slightly inclined with respect to the line perpendicular to the longitudinal direction of the attachment/detachment tool 1, and the opening a of the needle cap A is open on the side moving away from the operation piece 4, the injection needle N is When the injection needle N is inserted into the cap A, the insertion direction line of the injection needle N becomes further away from the fingers of the hand holding the attachment/detachment tool 1, so that operational safety can be further ensured.

FIGS. 6 and 7 show other embodiments of the present invention, in particular a modification of the needle cap clamping portion. That is, the needle cap holding part 25 of this attachment/detachment tool 21 is formed on the inner circumferential surface of a circular needle cap insertion part 26 bored on the distal end side of the attachment/detachment tool main body 22 and on the distal end side of the slide plate 23. This is a circular hole that is drilled, and is normally biased by the spring biasing force acting on the slide plate 23, so that the attachment/detachment tool main body 22
It is formed by the inner circumferential surface of a circular hole 27 that is biased toward the front side of the circular hole-shaped needle cap insertion portion 26 on the side, and a portion that is sufficiently far away from this circular hole 27 toward the front side. By appropriately pulling the operating piece 24 on one slide plate 23 toward the front side against the spring biasing force, the circular hole 27 on the slide plate 23 side is connected to the circular hole-shaped needle cap insertion portion 26 on the detachable tool main body 21 side. In the matched state, the needle cap A is attached to this needle cap holding part 2.
5, the needle cap A can be inserted as shown in FIG. A is held between both circular holes 26 and 27. This clamping force can be increased as appropriate by pushing and pulling the operating piece 24 with your fingers. In addition, this attachment/detachment tool 2
The structure of the attachment/detachment tool 1 other than the needle cap holding part 25 in the attachment/detachment tool 1 of the previous embodiment is the same.

In the embodiment, the injection needle and its needle cap that are used by being attached to a syringe have been described, but the present invention can also be applied to an injection needle and its needle cap that are attached to the tip of a tube that is connected to an infusion container.

(Effects of the invention) According to the invention, the needle cap is held between the slide plate and the attachment/detachment tool body by pressing the slide plate in the holding direction with your fingers, so the needle cap can be securely held. This makes it easy to attach and detach the syringe needle, and it is safe because there is no risk of accidentally pricking your finger with the syringe needle during the attachment and detachment operation.

Furthermore, since the spring that biases the slide plate in the needle cap clamping direction is only an auxiliary means for clamping the needle cap, it is possible to use a spring with a small biasing force. The slide plate can be easily slid and operated against the pressure, making it easy to use.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the attachment/detachment tool of the present invention, Fig. 2 is a plan view of the same attachment/detachment device, Fig. 3 is a longitudinal sectional view of the same attachment/detachment device, and Fig. 4 is a vertical sectional view of the same attachment/detachment device. FIG. 5 is an explanatory perspective view showing how to attach and detach the needle cap. FIG. 6 is a perspective view of another embodiment of the attaching/detaching device. FIG. 7 is an enlarged longitudinal cross-section of the main parts of the same attachment/detachment device. It is a front view. A...needle cap, N...syringe needle, 1,21...
... Attachment/detaching tool, 2, 22... Attachment/detaching tool main body, 3, 23...
...Slide plate, 5, 25...Needle cap attachment/detachment part,
6... Spring, 11a, 26... Needle cap insertion portion.

Claims (1)

[Scope of utility model registration request] An attachment/detachment tool for removing the needle cap attached to the injection needle to protect it from the injection needle during use, and for reattaching the needle cap to the injection needle after use, the tip of the attachment/detachment device body. A needle cap insertion part for inserting the needle cap is formed in the part, and a slide plate is slidably engaged with the attachment/detachment tool main body in the longitudinal direction, and the slide plate and the attachment/detachment tool body are connected with the needle cap insertion part in between. A needle cap attaching/detaching device for a syringe, comprising: a needle cap clamping portion formed between the slide plate and a spring for biasing the slide plate in the needle cap clamping direction;