JPH1191875A - Device for unplugging injection cylinder with chemical liquid filled - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an injection cylinder to be reliably unplugged without contamination by including a pair of control members which couple so that they can be opened/closed and a hook formed oppositely at each tip of the control members wherein the hook is closed only at one of ends. SOLUTION: Control members 11, 11 are integrally formed with hooks 12, 12 of an appropriate plastic material having elasticity and coupled at a predetermined coupling angle θ. A stopper 12a is formed at one of ends of each hook 12, and a regulating part 12b is formed in parallel to the hook 12. The regulating part 12b is formed with an inclined guide face at an end opposite to the stopper 12a, so that it faces the hook 12. The control members 11, 11 can take an opening position for separating the hooks 12, 12 by coupling them to each other at a coupling angle θ. In addition, the control members 11, 11 control to close control members 11b, 11b via a finger, thereby allowing the hooks 12, 12 to be closed only at an end of the stoppers 12a, 12a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for opening a syringe filled with a drug solution, which is used when opening a syringe filled with a drug solution and mounting an injection needle.

[0002]

2. Description of the Related Art A syringe filled with a drug solution is used with an injection needle attached after opening.

[0003] When an injection needle is attached to an injection cylinder, the stopper attached to the tip of the injection cylinder may be removed, the injection cylinder may be opened, and the injection needle may be attached. In addition, it is general that a doctor, a nurse, or the like directly performs the operation of opening the injection cylinder by hand.

[0004]

According to the prior art, when opening the plug, there is a possibility that the operator's finger touches the tip of the syringe to contaminate the syringe. There is a problem that it is extremely difficult to open the plug without causing contamination.

SUMMARY OF THE INVENTION In view of the above-mentioned problems in the prior art, it is an object of the present invention to form a hook at the end of a pair of operating members that are openably and closably connected to each other so as to prevent the end of the injection cylinder from being contaminated. The present invention is to provide a device for opening a syringe filled with a drug solution, which can reliably carry out the above.

[0006]

According to a first aspect of the present invention, there is provided an electronic apparatus comprising: a pair of operating members which are openably and closably connected to each other; and hooks formed opposite to respective ends of the operating members. The gist of the invention is that the hook is closed only at one end.

The hook has a stopper at one end, and the stopper can regulate the insertion depth of the plug into the hook.

Further, a regulating portion is formed in parallel with the hook, and the regulating portion can position the stopper body in the axial direction.

Further, the hook and the regulating portion can be connected at one end through a stopper, and a guide groove whose bottom surface is curved in an arc toward the stopper is formed between the hook and the regulating portion. can do.

[0010] The regulating portion may have a guide surface formed at an end opposite to the stopper.

The operating member can automatically return to the open position.

[0012]

According to the structure of the present invention, hooks are formed opposite to each end of the operation member. Therefore,
By inserting the plug attached to the tip of the syringe between the hooks, closing the hook and engaging with the plug, and pulling out the whole, the plug is removed from the syringe via the hook and the syringe is opened. Can be plugged. Since the hook is closed only at one end and the other end is separated, there is no danger of strongly pinching the plug, and the operation force required when pulling out the plug becomes excessive. There is no fear.

When a stopper is formed at one end of the hook, the stopper is used to insert a plug between the hooks.
The insertion depth of the plug with respect to the hook can be regulated, and the plug can be positioned at an appropriate position at the center of the hook.

When forming the restricting portion in parallel with the hook,
When the plug is inserted between the hooks, the restricting portion can position the plug in the axial direction and more easily position the plug with respect to the hook.

When connecting one end of the hook and the restricting portion via the stopper, the stopper is formed continuously between the hook and the restricting portion, so that the insertion depth of the plug into the hook can be further ensured. Can be regulated.

The guide groove whose bottom surface is curved in an arc shape accommodates the outer flange of the plug, so that the hook can be securely engaged with the outer flange.

When a guide surface is formed at the end opposite to the stopper with respect to the restricting portion, the guide surface guides the plug when the plug is inserted between the hooks, and facilitates the insertion operation. Can be.

The operating member that automatically returns to the open position does not need to be returned to the open position each time the closing operation is performed. The hook is automatically opened, and the removed plug can be easily discarded.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

The opening device for a syringe filled with a drug solution has hooks 12 and 12 formed opposite to the respective tips of a pair of operating members 11 and 11 which are openably and closably connected (FIG. 1, FIG.
(Fig. 2). However, FIG. 2A is a sectional view taken along line XX of FIG. 1, and FIG. 2B is a sectional view taken along line YY of FIG.

The operating members 11, 11 are formed integrally with the hooks 12, 12 from a suitable elastic plastic material, and are connected at a predetermined connection angle θ. At the distal end of each operating member 11, an operating portion 11b with slip stoppers 11a, 11a... Is formed.

A stopper 12a is formed at one end of each hook 12 (FIGS. 2 and 3), and a restricting portion 12b is formed in parallel with the hook 12. In addition, hook 1
2. One end of the regulating portion 12b is connected via a stopper 12a, and a guide groove 12c is formed between the hook 12 and the regulating portion 12b. The hook 12 and the restricting portion 12b are each formed so that the stopper 12a side is curved in an arc shape and is high, and the hook 12 is formed thin at the tip end side via an outer slope 12d. Also,
In the regulating portion 12b, facing the hook 12,
An oblique guide surface 12b1 is formed at the end opposite to the stopper 12a. The guide groove 12c has a bottom surface curved in an arc shape toward the stopper 12a.

The operating members 11, 11 are connected to each other at a connection angle θ.
, It is possible to take an open position for separating the hooks 12, 12 (FIGS. 1 and 2). The operating members 11 and 11 are connected to the operating unit 11 via fingers.
b and 11b are closed (arrow K1 in FIG. 4).
, K1 direction), hooks 12, 12 with stoppers 12a,
It can be closed only at the end on the 12a side (the same figure). That is, the hooks 12 and 12
Only the ends on the sides a and 12a are closed, and an opening 12e opening toward the other end can be formed. The operation members 11, 11 automatically return to the open position through the elasticity of the connecting portion by removing the external force, and
2, 12, and the stoppers 12a, 12a can be completely separated.

The opening device for a syringe filled with a drug solution is used to open a closed syringe tube SY filled with a drug solution and closed via a stopper SY3 (FIGS. 1 and 2). The injection cylinder SY has an outer cylinder SY1 and an inner cylinder SY2 which are removably combined with each other.
1a is provided with a stopper SY3 for preventing leakage of the chemical solution. The plug SY3 is formed in a bottomed cylindrical shape having an outer flange SY3a formed at the tip.

Now, the hooks 12, 12 are opened and the plug SY is opened.
3 with the outer flange SY3a in the guide grooves 12c, 12c.
When the plug SY3 is inserted between the hooks 12 and 12 in the direction (in the direction of arrow K2 in FIG. 2B), the insertion depth of the plug SY3 with respect to the hooks 12 and 12 is regulated via the stoppers 12a and 12a. And the outer flange SY3a
Are positioned in the axial direction by contacting the regulating portions 12b, 12b, and can be inserted into appropriate positions between the hooks 12, 12 (solid line in FIG. 2A, FIG. 2B). Then, when the hooks 12 and 12 are closed via the operating members 11 and 11, the hooks 12 and 12 securely engage with the outer flange SY3a of the plug SY3. If the pull-out operation is performed so as to be separated from the syringe SY (in the direction of the arrow K3 in FIG. 3A), the stopper SY3 is
The syringe barrel SY can be opened by removing it from the small diameter portion SY1a of Y (two-dot chain line in the same figure (A)).

In this way, the syringe SY is removed from the stopper SY3.
Is removed, the operation members 11, 11 are returned to the open position, and the plug SY3 is discarded. The opened syringe SY with the stopper SY3 removed can be equipped with an injection needle (not shown) at the small diameter portion SY1a at the tip, and can be used to inject the filled drug solution.

In the above description, each hook 12 is formed by forming a slope corresponding to the guide surface 12b1 of the regulating portion 12b at the end opposite to the stopper 12a.
The plug SY3 can be more easily inserted between 2 and 12.

[0028]

As described above, according to the present invention, a hook is formed at each end of a pair of operating members that are openably and closably connected, so that the plug of the syringe is inserted between the hooks, and the hook is connected. By closing and pulling out the whole,
Since the stopper can be removed from the syringe, there is an excellent effect that the stopper can be reliably opened without contaminating the syringe.

[Brief description of the drawings]

FIG. 1 is an explanatory perspective view of the overall configuration.

FIG. 2 is an enlarged sectional explanatory view of a main part.

FIG. 3 is an enlarged perspective view of a main part.

FIG. 4 is an enlarged front explanatory view of a main part.

[Explanation of symbols]

 SY3 ... plug 11 ... operating member 12 ... hook 12a ... stopper 12b ... regulating part 12b1 ... guide surface 12c ... guide groove

Claims (7)

[Claims] 1. A pair of operating members that are openably and closably connected,
A hook formed opposite to each end of the operation member, wherein the hook is closed only at one end thereof. 2. The injection filled with a drug solution according to claim 1, wherein the hook has a stopper at one end thereof, and the stopper regulates a depth of insertion of the stopper into the hook. A tube opening device. 3. A syringe filled with a drug solution according to claim 1, wherein a regulating portion is formed in parallel with the hook, and the regulating portion positions the stopper body in the axial direction. Opening device. 4. The device according to claim 3, wherein the hook and the restricting portion connect one end portion via the stopper.
An opening device for a syringe filled with the drug solution according to the above. 5. The liquid filling device according to claim 3, wherein a guide groove having a bottom surface curved in an arc shape toward the stopper is formed between the hook and the restricting portion. A syringe opening device. 6. The stopper of claim 3, wherein the restricting portion forms a guide surface at an end opposite to the stopper. Appliances. 7. The stopper device for a syringe filled with a drug solution according to claim 1, wherein the operation member automatically returns to an open position.