JPH0646740U - Cap for injection needle - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a cap for protecting an injection needle, which is safely and surely covered with a cap after the syringe is used and which does not easily fall off. [Structure] The injection needle 3 is obliquely penetrated through the inner wall of the cap 5, and the end of the cap 5 is attached to the main body of the syringe or the base of the injection needle in a connected state, and the cap 5 is moved after using the injection needle. The injection needle 3 was pulled out from the penetrating portion, and the cap base end portion 7 was made extendable so that the tip of the injection needle 3 was housed in the cap 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention mainly relates to a needle cap used when discarding the needle of a syringe.

[0002]

[Prior art]

 When discarding with the needle attached to the syringe used in hospitals, clinics, etc., or when removing the needle from the syringe and discarding the needle, put the cap on the needle and prevent the needle from sticking to human body etc. Need to consider. An example of a conventional cap for that purpose is shown in FIG.

FIG. 5 is a side sectional view of a conventional syringe, in which a cap A for an injection needle covers the tip of an injection needle B before use, and an end D of the cap A is securely attached to a base C of the injection needle. When the syringe is used, the cap A is detached from the fitting portion and used, and after the use, the cap A is put on the injection needle B to be in the original state. The cap A is made of synthetic resin such as plastic that does not easily come off. Therefore, even if this is discarded, it is possible to prevent the collection operator from being injured by the injection needle.

However, when the cap B is put on the injection needle A such as a nurse who handles a syringe, the end D of the cap A is small and the tip of the long injection needle A cannot be inserted when the end C of the cap B is inserted. It may happen that the fingertip is pierced with the injection needle A. In addition, since the cap A and the injection needle B are separated, it is not possible to know where the cap is placed, and the inconvenience that the injection needle B cannot be immediately covered with the cap A may occur. In addition, if the cap comes off during collection of the syringe and needle, the cap may be lost and the needle may be left in a dangerous state.

[0005]

The present invention solves the above problems and protects an injection needle after use by safely and securely capping the injection needle so that it does not fall off easily. The purpose is to provide a cap.

[0006]

[Means for Solving the Problems]

 The cap for an injection needle of the present invention is made in order to achieve the above-mentioned object. The injection needle is inserted obliquely into the inner wall of the cap, and the end of the cap is connected to the syringe body or the injection needle base. A cap for needles that is configured to be attached in a state where the cap is moved after the needle has been used and the needle is pulled out from the penetration point so that the tip of the needle can be stored inside the cap. is there. Further, claim 2 is the injection needle according to claim 1, wherein the injection needle is squeezed obliquely through the inner wall of the cap and the end of the cap is connected to the syringe body or the injection needle base. Claim 3 is a cap for use in claim 1 or claim 2, wherein the cap is moved after the injection needle is used, and the injection needle is pulled out from the penetrating portion so that the tip of the injection needle can be stored in the cap. Claim 3 is a cap for an injection needle, the portion of which is extendable by a sliding means.

[0007]

[Action]

 The needle cap is attached integrally to the syringe body or needle in a connected state, and the syringe before use has the needle protruding through the cap and protruding from the cap, and after using the syringe, hold the cap with the syringe body or When the needle is pulled out from the base of the needle, the tip of the needle is pulled out from the inner wall of the cap. Since the needle penetrates the inner wall at an angle, the relative position moves, and when the needle comes out of the through hole and fits inside the cap, the elasticity of the needle causes the needle tip to contact the inner wall of the cap. The needle will not slip again and will not pierce the original through hole of the cap again. The base end portion of the cap is configured to be extendable in a connected state, and the extending means may be a bellows type or slidable like the relationship between the cylinder and the piston.

[0008]

Embodiment Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall longitudinal sectional view of a syringe according to the present invention, showing a state before use of the syringe. The syringe body is composed of the outer cylinder 1 and the inner cylinder 2, the injection needle 3 is fixed to the tip of the outer cylinder 1, and the protection cap 4 is covered on the injection needle 3 as in the conventional case. However, there is another injection needle cap 5 (hereinafter simply referred to as a cap) 5 through which the injection needle 3 penetrates. The cap 5 has a through hole 6 formed obliquely with respect to the axis thereof, and the injection needle 3 is bent and penetrates the through hole 6 so that the axis of the injection needle 3 and the axis of the cap 5 are not aligned with each other. I haven't done it. The base end portion 7 of the cap 5 is attached to the outer cylinder 1 of the syringe body or the base portion of the injection needle 3, and is connected so that the cap 5 is not separated by the extensible means even when pulled in the distal direction of the injection needle 3. Is configured. When the injection needle 3 is made parallel to the axis of the outer cylinder 1 of the syringe body, the cap 5 is deformed, or the injection needle 3 is blunted and penetrates the through hole 6 of the cap 5. When the injection needle 3 is obliquely attached to the outer cylinder 1 of the syringe body, no bending force is applied to the injection needle 3.

Next, a description will be given of the specific use situation and the action of the cap 5 configured as described above, mainly regarding the extension mechanism of the base end portion 7 during and after the use of the syringe, with a few examples. Reveal That is, in each of FIG. 2, FIG. 3, and FIG. 4, the cap 5 is shown in use (a) and after use is shown in FIG.

FIG. 2 is a partial plan cross-sectional view of the syringe, showing a cap 5 having a base end portion 7 in a bellows type. In FIG. 2 (a) showing the state when the syringe is used, a bellows-like bellows 8 is attached and fixed to the tip of the outer cylinder 1. A cap 5 is integrally connected to the bellows 8 on the side opposite to the outer cylinder 1, and an injection needle 3 is inserted through a through hole 6 obliquely provided in the cap 5. Since the through hole 6 of the cap 5 is not provided in the axial center of the cap 5, the injection needle 3 is contracted while the bellows 8 is contracted while the elasticity is added, and the cap 5 is attached to the mounting portion of the injection needle 3. It is fitted and fixed. The syringe is ready for use in this state. When the use of the syringe is completed, the tip of the injection needle 3 is covered with the cap 5, and the cap 5 fixed to the base of the injection needle 3 is pulled out to prevent the injection needle 3 from being pierced by other parts. When moved toward the needle tip, the bellows 8 extends from the mounting portion. At this time, the needle tip moves along the through hole 6, and finally the tip of the injection needle 3 comes out of the through hole 6 and is positioned inside the cap 5, as shown in FIG. Then, the axis of the injection needle 3 and the axis of the cap 5 are aligned. Therefore, the position of the needle tip and the through hole 6 are not displaced, and the injection needle 3 does not penetrate the through hole 6 again to expose the needle tip to the outside of the cap 5.

FIG. 3 is also a partial plan sectional view of the syringe, in which the base end portion of the cap 5 is fixed to the base portion of the injection needle 3 instead of the outer cylinder 1 of the syringe, and is a pull-out type multiple insertion like a tripod of a camera. It is a child tube 9. An example in which the injection needle 3 is inclined with respect to the syringe and the cap 5 is shown. As in the case of FIG. 2, when the syringe is used, it is used with the injection needle 3 protruding from the cap 5 as shown in FIG. 3 (a), and when the use of the syringe is completed, the tip of the injection needle 3 is replaced with the cap 5 When the cap 5 fixed to the base of the injection needle 3 is pulled out and moved toward the needle tip of the injection needle 3 to prevent the injection needle 3 from being pierced by another, The tip of the injection needle 3 is pulled out from the through hole 6 and positioned inside the cap 5 as shown in FIG. 3 (b). At this time, since the injection needle 3 is inclined from the beginning, the needle tip is pressed against the inner wall of the cap 5 when it is accommodated in the cap 5, but the injection needle 3 penetrates the through hole 6 again. Therefore, the needle tip is not exposed to the outside of the cap 5.

FIG. 4 shows a structure in which a base end 7 of the cap 5 is configured by providing a cylinder 10 which is slidable along the outer side of the outer cylinder 1 of the syringe, and FIG. In the state of use, the injection needle 3 projects from the through hole 6 in the diagonal position of the cap 5. When the use of the syringe is completed, the tip of the injection needle 3 is covered with the cap 5, and the cap 5 is put together with the cylinder 10 provided on the outside of the outer cylinder 1 of the injection needle 3 in order to prevent the injection needle 3 from being stuck. When the injection needle 3 is moved toward the needle tip, the cylinder 10 slides along the outer cylinder 1 and the movement of the cylinder 10 is stopped by the stopper 11 provided on the shoulder of the outer cylinder 1. ), The tip of the injection needle 3 comes out of the through hole 6 and is located inside the cap 5. At this time, the injection needle 3 does not penetrate the through hole 6 again to expose the tip of the needle to the outside of the cap 5.

The extension means (8, 9, 10) of the base end portion 7 of the cap 5 has a structure that is usually conceived other than the above description, for example, a strip of paper rolled into a cylinder is stretched while holding the outside and the inside. By utilizing the fact that a long tube is obtained, or by simply connecting the cap 5 and the base end portion 7 with a thread, the connection state can be maintained and the above configuration and action can be achieved.

[0014]

[Effect of device]

 As described above, the needle cap of the present invention is integrally attached to the syringe in a connected state.When the syringe is used, it is used as it is, and when the needle is protected after the syringe is used, the needle cap is used. The needle tip can be safely protected simply by moving the cap along it, and the cap is not covered with the needle tip as in the past, so the operation is easy and the operator can touch the fingertip due to an operation error. It is possible to eliminate the cause of damage and injury when collecting syringe waste. Further, it has an effect that the possibility of blood infection, which has been particularly problematic in recent years, can be almost eliminated.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of an embodiment of a syringe having a needle cap.

FIG. 2 is a partial plan cross-sectional view of an embodiment showing a usage state of a cap for an injection needle, (a) showing a state of use and (b) showing a state after use.

FIG. 3 is a partial plan cross-sectional view of an embodiment showing another usage state of the injection needle cap, wherein (a) shows the time of use and (b) shows the time after use.

FIG. 4 is a partial plan cross-sectional view of an embodiment showing another usage state of the injection needle cap, (a) showing the time of use and (b) showing the time after use.

FIG. 5 is a vertical sectional view showing an aspect of a conventional syringe.

[Explanation of symbols]

 1 Outer cylinder 2 Inner cylinder 3 Injection needle 4 Protective cap 5 Injection needle cap 6 Through hole 7 Base end 8 Bellows 9 Multiple nesting tube 10 Cylinder 11 Stopper

Claims (3)

[Scope of utility model registration request] 1. A cap for protecting an injection needle, wherein the injection needle penetrates obliquely with respect to the inner wall of the cap, and an end portion of the cap is connected to a syringe body or a needle base portion to be connected thereto. A cap for an injection needle in which the base end portion of the cap is extendable so that the cap is moved after the injection needle is used and the injection needle is pulled out from the penetration point so that the tip of the injection needle can be stored in the cap. 2. A cap for protecting an injection needle, wherein the injection needle is squeezed obliquely through the inner wall of the cap, and the end portion of the cap is attached to the syringe body or the injection needle base in a connected state. 2. The injection needle according to claim 1, wherein the cap proximal end portion is configured to be extended so that the cap is moved after the injection needle is used and the injection needle is pulled out from the penetration point so that the injection needle tip can be stored in the cap. cap. 3. A cap for protecting an injection needle, wherein the injection needle penetrates obliquely with respect to the inner wall of the cap, and the end portion of the cap is connected to a syringe body or an injection needle base portion so as to be connected thereto. The cap base end portion is made extendable by a sliding means so that the cap is moved after the injection needle is used and the injection needle is pulled out from the penetrating portion so that the tip of the injection needle can be housed in the cap. The cap for an injection needle according to.