JPH11137686A - Outside case holder for syringe barrel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably operate a syringe barrel from the start of injection to the end in spite of simple structure and further to easily visually recognize the inside by constituting a cylindrical mounting part mounted on the syringe barrel to hold it with a finger hook fixed at the rear end of the syringe barrel. SOLUTION: A cylindrical mounting part 2 of an outside case holder 1 is mounted at the back just near a needle connecting part 15 of a syringe barrel 6 and in such a state, the state of liquid 13 for suspension stored in a rear side storage chamber 9, namely, whether the liquid gets muddy or its color is changed or not can be easily confirmed. Besides, the mounting part 1 can be easily moved back and forth between the needle connecting part 15 and a finger hook 18 by easily getting over a bypass path 19 while expanding the inner diameter of the cylindrical mounting part 2 by expanding an opening part or by passing through the opening part by rotating to any suitable position. Therefore, by moving the outside case holding part 1 to the position of a virtual line, for example, the inside of the front side storage chamber 8 can be also easily visually recognized as needed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exterior holder for a syringe barrel which can be attached to the outer surface of a syringe barrel so that a fingertip can be hung at the time of injection. Even a syringe with a long syringe barrel, such as a two-component syringe, which is arranged in a simple manner, can be operated stably from the start of injection to the end of injection while having a simple structure, and the inside of the syringe barrel can be easily visually recognized. The present invention relates to an exterior holder.

[0002]

BACKGROUND OF THE INVENTION Generally, a syringe has a syringe needle connected to the tip of a syringe barrel, a finger hook fixed to the rear end of the syringe barrel, and a piston body slidably operated by a plunger rod arranged in the syringe barrel. There is a configuration in which a fingertip is hung on the finger hook and the plunger rod is pressed to administer the medicine in the syringe to the patient.

Since the distance between the rear end of the plunger rod and the finger hook becomes short at the end of the injection, the support of the injection cylinder tends to be unstable when the injection cylinder is long, such as a two-component syringe. In addition, the needle tip may be inadvertently moved to cause pain to the patient or prevent injection into an appropriate site.

[0004]

2. Description of the Related Art Conventionally, even in a syringe having a long injection cylinder, in order to operate it stably from the start of the injection to the end of the injection, for example, the syringe is axially oriented as shown in Japanese Utility Model Registration No. 2533813. There is a syringe provided with a plurality of finger hooks at intervals. That is, as shown in FIG. 7, this syringe (50) has an exterior holder (54) composed of two divided holders (53, 53) attached to a collar (52) at the rear end of a syringe (51). hand,
The split holder part (53) was fixed to the syringe barrel (51) by connecting and fixing the divided holder parts (53) to each other, and finger hooks (55 and 56) were provided on the outer surfaces of the front end and the rear end of the exterior holder (54), respectively. Things.

At the time of injection, first, a finger hook on the rear end side
By pushing the plunger rod (57) with the fingertip on (56), the solution contained in the rear storage chamber (58) in the syringe barrel (51) is transferred from the bypass passage (59) to the front storage chamber (60). Inject into
The medicine in the front accommodation room (60) is dissolved to complete the preparation for administration. Next, the fingertip is replaced with a finger hook (55) on the front end side, and thereafter, the needle tip of the injection needle (61) is pierced into a required portion of the patient as if a normal syringe is used, and the plunger rod (57) is pushed forward to perform a medication operation. Do.

[0006]

In the above prior art, 2
Exterior holder by connecting the two split holders (53
Since (54) is composed, the structure is complicated and the assembling work is complicated.In addition, in order to fix it securely without rattling, it is molded with high precision by adapting to the external dimensions of the syringe barrel (51) And there is a problem that it cannot be implemented inexpensively.

Further, in this prior art, since the portion on which the exterior holder is mounted has a double wall structure with the syringe, it is not easy to visually confirm the inside of the syringe clearly.
There is a problem that abnormalities such as turbidity and discoloration of the stored medicine cannot be easily visually recognized. The present invention has been made to solve the above-mentioned problems, and to provide an external holding device for a syringe cylinder which has a simple structure, can be operated stably from the start of injection to the end of injection, and can easily visually recognize the inside of the syringe tube. Technical issues.

[0008]

In order to solve the above-mentioned problems, the present invention will be described with reference to, for example, FIGS. 1 to 6 showing an embodiment of the present invention. It is configured as follows. That is, the present invention provides a syringe
A cylindrical mounting part (2) that can be attached to and detached from the outer surface of (6) from the circumferential side
And a finger hook portion (3) protruding from the outer surface of the cylindrical mounting portion (2).
And a cylindrical mounting portion mounted on the syringe (6).
(2) is a finger hook (18) fixed to the rear end of the syringe (6).
It is characterized in that it is configured to be able to receive.

[0009]

The exterior holder has a cylindrical mounting portion that can be attached to and detached from the outer surface of the syringe barrel. By keeping the cylindrical mounting portion away from the finger hook, the interior of the syringe barrel can be easily visually recognized. And since a finger hook is fixed to the rear end of the injection cylinder, regardless of the presence or absence of the cylindrical mounting portion or the mounting state, it is possible to push the plunger rod using this securely fixed finger hook. Thus, the liquid in the rear storage chamber in the syringe is injected into the front storage chamber, and the preparation for medication is completed. Then, in a state in which the preparation for administration is completed, the cylindrical mounting portion mounted on the injection cylinder is securely received by the finger hook at the rear end of the injection cylinder, so that the finger mounting portion projecting from the outer surface of the cylindrical mounting portion is used. The syringe barrel is stably supported at a wide support interval.

It is sufficient that the cylindrical mounting portion is detachable from the outer surface of the injection cylinder from the circumferential side. For example, an opening is formed in a state in which a majority of the peripheral portion is left over the entire length of the cylindrical mounting portion. By expanding this opening, the cylindrical mounting portion can be configured to be detachable from the outer surface of the injection cylinder, or the cylindrical mounting portion can be constituted by a plurality of split mounting portions that can be connected to each other and disassembled. -It may be configured to be detachable by connecting.

[0011] The cylindrical mounting portion may be mounted on the finger hook at the rear end of the syringe barrel so as to be receivable, and may be mounted on the finger hook so that it cannot move forward. It may be mounted so as to be movable in the front-rear direction between the needle connection portion fixed to the tip of the syringe barrel, and in this case, the syringe barrel can be simply moved back and forth with the tubular mounting portion attached to the syringe barrel. It is possible to easily visually recognize a desired position in the inside.

Further, the cylindrical mounting portion may be received in a state of abutting against the finger hook, or an engaging portion may be formed on the cylindrical mounting portion, and a locking portion may be formed on the finger hook to form the locking portion. The engaging portion may be configured to be engageable with the portion.
In this case, the cylindrical mounting portion is securely fixed to the finger hook by this locking, and there is no danger that the cylindrical mounting portion may be inadvertently moved.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show a first embodiment of the present invention. FIG. 1 is a perspective view showing a state immediately before mounting a syringe holder for a two-component syringe on a syringe of a two-component syringe. FIG. It is sectional drawing of the state which attached the holding tool to the injection cylinder.

As shown in FIG. 1, the exterior holder 1 for a syringe barrel is provided on a cylindrical mounting portion 2 and a front end outer surface of the cylindrical mounting portion 2 so as to project in opposite directions. A pair of finger hooks (3
・ 3) The above-mentioned tubular mounting part (2) has a finger hook part
An opening (4) is formed in a portion where (3) is not protruded, leaving a majority of the peripheral portion over the entire length, and a cylindrical mounting portion is provided.
The opening (4) can be expanded by deforming (2). The exterior holder (1) of the first embodiment only needs to be formed of a material capable of deforming at least the cylindrical mounting portion (2) so that the opening (4) can be easily expanded. For example, it is preferable to be integrally formed of a flexible synthetic resin material such as polyethylene or polypropylene. In addition, the finger hook portion may have a structure in which a fingertip can be hooked at the time of operation and does not hinder the opening of the opening. For example, a portion corresponding to the opening may be formed in a notched flange shape. However, it is not limited to the shape of this embodiment.

The exterior holder (1) is configured such that the cylindrical mounting portion (2) is made up of a two-component syringe by expanding the opening (4).
It is externally fitted and attached to the syringe barrel (6) of (5) from the circumferential side. At this time, the inner diameter of the cylindrical mounting part (2) when not mounted is slightly smaller than the outer diameter of the injection cylinder (6), and the elasticity of the cylindrical mounting part (2) causes looseness. It is mounted on the outer surface of the syringe barrel (6) without causing the above.

The two-component syringe (5) is shown in FIGS.
As shown in (1), an intermediate stopper (7) is arranged in a syringe barrel (6), and the inside is divided into a front accommodation room (8) and a rear accommodation room (9), and the front accommodation room (8) A front plug (10) is disposed in front of the container to hermetically accommodate the powdered medicine (11), and a rear plug (12) is provided behind the rear storage chamber (9).
Is disposed to hermetically accommodate the suspension liquid (13), and the tip of the plunger rod (14) is screwed and fixed behind the stopper (12). In this embodiment, a case will be described in which a two-component syringe contains a powdered drug and a suspension liquid. However, a syringe using the external holding device of the present invention may contain other components. It goes without saying that it is good.

A needle connection part (15) is fixed to the tip of the syringe barrel (6), and an injection needle (17) covered with a needle case (16) is connected to the needle connection part (15). is there. A finger hook (18) is firmly fixed to the rear end of the syringe barrel (6), and a projection is provided on the inner surface of the rear end of the finger hook (18) so that the rear plug (12) does not come off. It is. A bypass passage (19) is formed by expanding a part of the cylinder wall in the middle part of the injection cylinder (6),
When the intermediate stopper (7) moves forward and reaches the position of the bypass passage (19), the front accommodation room (8) and the rear accommodation room (9) communicate with each other via the bypass passage (19). It is configured to do so.

The cylindrical mounting portion (2) of the outer holder (1) includes:
As shown in FIG. 2, it is mounted immediately behind the needle connection part (15) of the syringe (6), and in this mounted state, the rear storage chamber is mounted.
The state of the suspension (13) contained in (9), that is, whether turbidity or discoloration has occurred, can be easily confirmed visually. Further, the exterior holder (1) is provided with the opening (4).
By expanding the inner diameter of the tubular mounting part (2) by expanding the bypass passage (19) easily, or by rotating to an appropriate position and passing through the opening (4), It can be easily moved in the front-rear direction between the needle connection part (15) and the finger hook (18). Therefore, for example, by moving the exterior holder (1) to a position indicated by a virtual line,
If necessary, the inside of the front accommodation room (8) can be easily visually recognized.

Next, a procedure for injecting into a patient using a two-component syringe equipped with the above-mentioned exterior holder will be described. As shown in FIG. 2, with the exterior holder (1) attached to the forward portion of the syringe barrel (6), the finger hook (1) at the rear end of the syringe barrel (6) is mounted.
Put your fingertip on 8) and operate the plunger rod (14)
When (12) is pushed forward, the internal pressure of the rear storage chamber (9) increases, the intermediate stopper (7) is pressed and moves forward to reach the position of the bypass passage (19), and the suspending liquid (13) It flows into the front accommodation room (8) via the bypass (19). Then, the powdered medicine (11) is suspended in the flowing suspension liquid (13) to prepare an injection, and preparation for administration is completed.

Next, the exterior holder (1) is moved backward to the position indicated by the imaginary line and received by the finger hook (18). Thereafter, a fingertip is hung on the finger hook portion (3) of the exterior holder (1), and the needle case (16) is detached from the needle case (16) while supporting the syringe barrel (6) stably at a wide support interval. The desired tip of the patient is pierced into the required portion, and the plunger rod (14) is operated to push the back stopper (12) to administer the medication.

FIGS. 3 and 4 show a second embodiment of the present invention. FIG. 3 is a partially cutaway side view showing a state in which an exterior holder is mounted on a syringe barrel, and FIG. 4 is a syringe in a state in which preparation for administration is completed. FIG.

As shown in FIG. 3 and FIG. 4, this exterior holding device for syringe (1) is provided with a pair of finger hooks (3.3) in opposite directions to the front end of the outer surface of the cylindrical mounting portion (2). And is attached to the tip of the outer surface of the syringe barrel (6). In addition, in this embodiment, similarly to the first embodiment,
An opening is formed over the entire length of the cylindrical mounting portion (2),
The opening is expanded so that it can be mounted on the outer surface of the syringe barrel (6).

An engagement portion (20) is formed at the rear end of the inner surface of the cylindrical mounting portion (2), and a support ridge (2) is formed at a portion near the front end.
1) is formed. When the cylindrical mounting part (2) moves forward, the supporting ridge (21) is received by the needle connection part (15) at the tip of the injection cylinder (6), and the cylindrical mounting part (2) moves forward more than necessary. Never move. On the other hand, the finger hook (18) fixed to the rear end of the syringe barrel (6) has a groove-shaped locking portion (22) formed therein.
When the cylindrical mounting portion (2) is moved rearward as shown in (1), the engaging portion (20) can be locked by the locking portion (22). The click feeling of the locking makes it possible to confirm that the tubular mounting part (2) has been mounted at an appropriate position at the time of completion of preparation for administration, and prevents the cylindrical mounting part (2) from being accidentally moved. You.

The formation position of the engaging portion (20) is a cylindrical mounting portion.
It is not limited to the inner surface of (2). For example, in the modification shown in FIG. 5, an engaging portion (20) is provided to protrude rearward at the rear end of the cylindrical mounting portion (2), and a finger hook (18) at the rear end of the syringe (6) is provided. Has a locking portion (22) at the front end corresponding to the engaging portion (20).

In the first embodiment, the opening formed over the entire length of the cylindrical mounting portion is expanded so that the cylindrical mounting portion can be mounted on the injection cylinder. Any other structure may be used as long as it can be attached to the outer surface from the circumferential side. For example, in the third embodiment of the present invention shown in FIG. 6, the cylindrical mounting part (2) is formed into three parts, and each of the divided mounting parts (23...)
Are connected to each other by a hinge (24). An engagement protrusion (25) and an engagement member (26) are provided on the side end of the split mounting portion (23) where the hinge (24) is not formed. After the parts (23 ...) are mounted on the outer surface of the syringe barrel, the engaging member (26) is engaged with the engaging projections (25), whereby the mounting posture of the cylindrical mounting part (2) to the syringe barrel is changed. Will be retained.

In the above embodiment, the case where the present invention is used for a two-component syringe has been described, but it goes without saying that the syringe holder of the present invention can be applied to other syringes. The finger hook may be provided at any position on the outer surface of the cylindrical mounting portion. However, in order to secure a wide support interval with the short cylindrical mounting portion, the front end of the outer surface of the cylindrical mounting portion is required. Preferably, it is formed at the deviated part.

[0027]

Since the present invention is constructed and operates as described above, it has the following effects.

(A) Since the cylindrical mounting portion can be attached to and detached from the outer surface of the syringe barrel, the cylindrical mounting portion can be kept away from the finger hook at the rear end of the syringe barrel before the injection operation. It is possible to easily visually check whether or not an abnormality such as turbidity or discoloration has occurred in the medicine or the like stored in the cylinder. Moreover, the plunger rod can be pushed forward using a finger hook firmly fixed to the rear end of the injection cylinder regardless of whether or not the cylindrical mounting portion is attached or not, and the inside of the injection cylinder is clearly visible. Preparations can be made while confirming the conditions.

(B) A finger hook separate from the exterior holder is fixed to the rear end of the syringe barrel to which the exterior holder is attached. Irrespective of the state, the plunger rod can be pushed to the intermediate position while being stably supported by using this firmly fixed finger hook. Then, since the cylindrical mounting portion is received by the securely fixed finger hook, the syringe barrel is also used when the fingertip is hung on the finger hook protruding from the outer surface of the mounting portion to push the plunger rod to the injection end position. It can be stably supported at a wide support interval. As a result,
While having a simple structure including only the cylindrical mounting portion and a finger hook protruding from the outer surface thereof, the syringe can be stably supported and operated from the start of injection to the end of injection.

(C) An opening is formed in such a state that the majority of the peripheral part is left over the entire length of the cylindrical mounting part, and the cylindrical mounting part is attached to and detached from the outer surface of the injection cylinder by expanding this opening. When it is configured to be possible, the cylindrical mounting part can be implemented at a low cost with a very simple structure, and can be mounted on the injection cylinder very easily.

(D) When the cylindrical mounting portion is mounted so as to be movable in the front-rear direction between the needle connection portion fixed to the front end of the injection cylinder and the finger hook fixed to the rear end, the cylindrical mounting portion is mounted. By simply moving the part back and forth with the part attached to the syringe barrel, a desired position in the syringe barrel can be easily visually recognized. As a result, since the cylindrical mounting portion can be mounted on the outer surface of the injection cylinder in advance, for example, during the packaging process of the syringe, the mounting operation immediately before injection can be omitted, and the handling can be simplified.

(E) An engaging portion is formed on the cylindrical mounting portion,
When a locking portion is formed on the finger hook so that the engaging portion can be locked to the locking portion, the cylindrical mounting portion is securely received by the finger hook by this locking, and preparation for medication is performed. Completion can be confirmed, and injection can be performed more stably since the tubular mounting portion does not move carelessly.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention, in a state immediately before mounting an exterior holder for a syringe on a syringe of a two-component syringe.

FIG. 2 is a cross-sectional view of the first embodiment in a state where the syringe holder is mounted on a syringe of a two-component syringe.

FIG. 3 is a partially cut-away side view showing a second embodiment of the present invention, in a state in which an exterior holder for a syringe barrel is attached to the syringe barrel.

FIG. 4 is a partially cutaway side view of a syringe equipped with an exterior holder according to a second embodiment in a state where preparation for administration is completed.

FIG. 5 is a perspective view of a syringe barrel exterior holder showing a modification.

FIG. 6 is a perspective view of an injection tube exterior holder according to a third embodiment.

FIG. 7 is an exploded perspective view of the exterior holder in the process of attaching to the syringe barrel, showing the prior art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Injection cylinder exterior holder, 2 ... Cylindrical mounting part, 3 ... Finger hook part, 4 ... Opening, 6 ... Syringe barrel, 15 ... Needle connection part, 18 ... Finger hook, 20 ... Engaging part, 22 ... Locking part.

Claims (4)

[Claims] 1. A cylindrical mounting portion (2) detachably mounted on an outer surface of a syringe barrel (6) from a peripheral side, and a finger hook (3) protruding from an outer surface of the cylindrical mounting portion (2). The cylindrical mounting portion (2) mounted on the syringe (6) can be received by a finger hook (18) fixed to the rear end of the syringe (6). , Exterior holder for syringe barrels. 2. An opening (4) is formed in a state in which a majority of the peripheral part is left over the entire length of the cylindrical mounting part (2), and the opening (4) is formed.
By expanding (4), the cylindrical mounting part (2) can be inserted into the syringe (6).
The exterior holder for an injection cylinder according to claim 1, wherein the exterior holder is configured to be detachable from an outer surface of the syringe. 3. A needle connection part (1) fixed to the tip of a syringe barrel (6).
The exterior for a syringe barrel according to claim 1 or 2, wherein the tubular mounting portion (2) is movably mounted in the front-rear direction between the finger hook (18) fixed to the rear end and the finger hook. Holder. 4. An engaging portion (20) is formed on the cylindrical mounting portion (2), and a locking portion (22) is formed on the finger hook (18). The exterior holder for an injection cylinder according to any one of claims 1 to 3, wherein the engagement portion (20) is configured to be lockable.