JP3260612B2 - Injection liquid inhalation aid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection liquid inhaling aid, and more particularly, to an injection liquid inhaling aid used when injecting an injection in an ampoule into a syringe.

[0002]

2. Description of the Related Art In general, in order to prepare an injection solution in a syringe, the injection needle of the syringe is inserted into the sealing film of an ampule containing the injection solution, and the piston rod of the syringe is pulled out to obtain the injection solution in the ampoule. Is sucked into the syringe. This operation is performed, for example, by holding the ampoule with one hand and the syringe with the other hand, inserting the syringe needle of the syringe into the seal film (rubber stopper) of the ampule, and connecting the unstable needle via the syringe needle. This is done by withdrawing the syringe piston rod while maintaining the mutual positional relationship between the ampoule and the syringe in the condition. Also, care must usually be taken to ensure that the air in the ampule is not drawn into the syringe. Such an operation requires a high degree of skill, and even a medical technician who is a specialist sometimes erroneously pierces a finger with a syringe needle. Furthermore, it is not easy for the patient himself to perform this operation.

In order to facilitate such a difficult operation, for example, an auxiliary tool as shown in FIG. 1 may be used. The auxiliary tool 70 has a series of grooves 72 formed in a substantially semi-cylindrical cross section from the upper surface 71 thereof.
The series of grooves 72 accommodates and locks a stopper 82 holding the sealing film at one end of the ampoule 80 and a lower edge 84 of the stopper 82.
And a syringe holding groove 74 into which the syringe 92 of the syringe 90 is inserted. This auxiliary tool 70 is formed of a transparent material, and has a convex lens 7 on the lower surface.
8 is attached, and the scale of the outer peripheral surface of the syringe 92 of the syringe 90 in contact with the syringe holding groove 74 is enlarged. The auxiliary tool 70 press-fits and locks the plug 82 of the ampoule 80 into the ampoule engaging groove 76 to hold the ampoule 80 so that it cannot move in the axial and radial directions.
After the injection needle 96 approaches and penetrates the sealing film of the ampoule 80 while sliding the outer peripheral surface of the syringe 92 of the syringe 90 against the groove surface of the syringe holding groove 74 of the auxiliary tool 70, the piston rod 94 of the syringe 90 is pulled out. Then, the injection solution in the ampule 80 is sucked into the syringe 90. The use of this auxiliary tool 70 makes it easy to stably hold the ampoule 80 and the syringe 90 coaxially.

However, even when such an auxiliary tool 70 is used, an operation is performed in the air while holding the auxiliary tool 70 and the ampoule 80 and the syringe 90 coaxially arranged by the auxiliary tool 70 and looking at the scale. Because of the necessity, improvement in operability is not always sufficient. In particular, when the operating hand is shaking or when the operating person has poor visual acuity, it is difficult to prepare the injection solution even with the aid of the auxiliary tool 70.

[0005]

Accordingly, a technical problem to be solved by the present invention is to provide an injection liquid inhalation aid having excellent operability.

[0006]

Means for Solving the Problems and Actions / Effects In order to solve the above technical problems, according to the present invention, there is provided an injection liquid inhalation aid having the following structure.

[0007] This injection liquid inhalation aid is used when injecting an injection liquid in an ampoule into a syringe provided with a syringe having an outer diameter smaller than the outer diameter of the ampoule. The lower surface of this injection liquid inhalation aid is flat, and the upper surface is formed with U-shaped grooves that are open at both end surfaces and that are linearly continuous. The U-shaped groove has a relatively wide ampule holding groove for holding the ampoule and a relatively narrow syringe holding groove for slidably holding the syringe. A step is formed at the boundary between the two holding grooves. The ampoule holding groove has an engagement protrusion that engages with the neck of the ampoule when holding the ampoule. The ampoule holding groove is configured such that at least a substantially half of the whole of the seal film side from the center of gravity of the ampoule is held in the ampoule holding groove, while the held end of the ampoule on the side opposite to the seal film is external. Has a length that is exposed to The syringe holding groove is shorter than the entire length of the syringe of the syringe.

[0008] In order to prepare an injection solution using the injection liquid inhalation aid of the above configuration, first, the auxiliary tool is placed on a flat surface. Since the lower surface of the auxiliary tool is flat, the auxiliary tool can be stably placed.

Next, the ampule is inserted into the ampule holding groove of the auxiliary tool placed on a flat surface. At this time, the ampule is arranged so that the end on the seal film side approaches and faces the boundary step between the ampule holding groove and the syringe holding groove. The engagement protrusion of the ampoule holding groove is engaged with the neck of the ampoule, and regulates the movement in the axial direction. The ampoule holding groove holds at least the entire substantially half of the ampoule closer to the seal film than the center of gravity of the ampoule, so that the ampoule is stably held. On the other hand, the end of the ampoule opposite to the seal film is exposed to the outside of the ampoule holding groove. By lifting this exposed portion, the ampoule can be removed from the auxiliary tool. If the ampoule is displaced from the predetermined position and inserted into the ampoule holding groove, the ampoule comes into contact with the engaging projection of the ampoule holding groove or the edge of the upper opening of the syringe holding groove narrower than the ampoule, or When the center of gravity of the ampoule deviates from the ampoule holding groove, the ampoule tilts. Therefore, whether or not the ampule has been correctly inserted into the ampule holding groove can be easily recognized visually and touched with the hand by the inclination of the ampule.

Next, the syringe is inserted into the syringe holding groove of the auxiliary tool with the injection needle of the syringe facing the ampoule, and the syringe is inserted into the ampoule while the outer peripheral surface of the syringe slides against the groove surface of the syringe holding groove. Move to the side and insert the needle through the sealing membrane of the ampoule. Since the length of the syringe holding groove is shorter than the entire length of the syringe of the syringe, only the syringe of the syringe slides on the syringe holding groove, and the piston rod of the syringe is exposed outside the auxiliary tool. Since the syringe holding groove slidably holds the syringe, it must be at least longer than the injection needle.

Next, while holding down the auxiliary tool and the syringe from above, the piston rod of the syringe exposed outside the auxiliary tool is pulled out, and the injection solution in the ampoule is sucked into the syringe. In the case of an ampoule having a seal membrane at one end and a piston at the other end and containing only the injection solution, the piston of the ampoule moves when the injection solution in the ampoule is drawn out, so that the injection solution always remains in the ampoule. Only, no gas is evolved. Therefore, it is not necessary to be careful not to draw air into the syringe. On the other hand, in the case of a bottle-shaped ampoule having only one opening, it is necessary to inject the injection solution with the ampule facing upward at the final stage of the injection solution inhalation operation so as not to inhale gas into the syringe. is there.

Next, after confirming that a predetermined amount of the injection solution has been inhaled from above the auxiliary tool, the user holds a part of the syringe exposed to the outside of the auxiliary tool and slides the syringe to the side opposite to the ampoule. And remove the injection needle from the ampoule. As a result, the injection liquid is prepared in the syringe.

[0013] If the above-mentioned injection liquid inhalation aid is used, it is not necessary to hold the syringe and ampoule in the space by hand, and no advanced technology is required.

Therefore, the above-mentioned injection liquid inhalation aid has excellent operability.

Preferably, the gap between the ampoule holding groove and the side face of the opposing groove can be elastically widened, and when the ampoule is held in the ampoule holding groove, the ampoule is located near the center of gravity of the ampoule. And a pair of locking projections for locking the locking projections.

In the above configuration, when the ampule is disposed at a predetermined position above the ampule holding position in the ampoule holding groove of the auxiliary tool, the lower side of the outer peripheral surface of the ampule is supported by the upper surface of the locking projection of the ampule holding groove. Then, the ampoule is in a substantially horizontal state. When the ampoule is placed in a position shifted from the ampoule holding groove of the assisting tool, the ampoule tilts.From the inclination of the ampoule, it is determined whether the ampoule is at a predetermined position.
It can be easily recognized visually or by touch.

Next, the ampoule is completely stored in the ampule holding position by urging the vicinity of the center of gravity of the ampoule downward while the ampule is arranged at a predetermined position. At this time, the interval between the pair of locking protrusions of the ampoule holding groove of the assisting tool is expanded by the outer peripheral surface of the ampoule, and when the ampoule reaches the bottom surface of the ampoule holding groove, the locking protrusion returns to the original distance, The lower surface of the locking projection is locked above the outer peripheral surface of the ampule. As a result, the ampoule is held radially with respect to the auxiliary tool. Therefore, the operation of inserting the injection needle through the sealable membrane of the ampoule and sucking the injection liquid becomes easier.

On the other hand, when the ampoule portion exposed from the auxiliary tool is lifted with respect to the auxiliary tool when replacing the ampoule, the gap between the locking projections is expanded when the outer peripheral surface of the ampoule passes between the locking projections. Can be removed from the aid.

Therefore, the operability of the injection liquid inhalation aid is further improved.

[0020] Preferably, the injection liquid inhalation aid has an elongated shape along the extending direction of the U-shaped groove in cross section, and both side surfaces of the injection liquid inhalation aid are inclined, and the width is narrower than the width of the lower surface.

According to the above configuration, the operation of holding and placing the auxiliary tool and the operation of pressing the auxiliary tool downward when removing the ampule from the ampule holding groove are facilitated.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an injection liquid inhalation aid according to an embodiment of the present invention will be described in detail with reference to FIGS. FIG. 2 is an explanatory view of the injection liquid inhalation aid of the present invention. (A) is a plan view and (B) is a sectional view.
FIG. 3 is an enlarged sectional view taken along the line III-III in FIG. FIG. 4 is an enlarged sectional view taken along line IV-IV in FIG. FIG. 5 is a plan view showing a usage state of the injection liquid inhalation aid of FIG.

The injection liquid inhalation aid 10 is an ampoule 4
0 and used with syringe 30.

As shown in FIG. 5, the ampule 40 has a substantially cylindrical shape, one end of which is sealed with a pierceable sealing film held by a stopper 42, and the other end of which is sealed with a movable piston 46. Injection solution is stored inside. On the outer peripheral surface of the ampoule 40, a portion adjacent to the stopper 42 is narrowed, and a neck 44 is formed.

As shown in FIG. 5, the syringe 30 has a syringe 32 having an outer diameter smaller than the outer diameter of the ampoule 40.
A piston 34 sliding in the syringe 32, a piston rod 36 having one end connected to the piston 34 and having the other end exposed to the outside from one end of the syringe 32, and the other end of the syringe 32, that is, the piston rod 36 is opposite to the piston 34. And an injection needle 38 connected to the side.

As shown in FIGS. 2 to 4, the auxiliary tool 10
Generally a columnar member having a trapezoidal cross-section and is narrower than the width on both sides of the side surface 17a of the width of the top surface 16 the lower surface 18, 1
7b is inclined. The auxiliary tool 10 has a continuous groove 20 extending in the longitudinal direction. An opening of the continuous groove 20 is formed in the upper surface 16 and the end surfaces 19a and 19b on both sides. The continuous groove 20 includes a syringe holding groove 22 on the right side in FIG. 2 and an ampule holding groove 24 on the left side in FIG. The width of the syringe holding groove 22 is substantially equal to the outer diameter of the syringe 32 of the syringe 30. The width and depth of the ampoule holding groove 24 are substantially equal to the outer diameter of the ampoule 40. Therefore, the width of the ampoule holding groove 24 is wider than the width of the syringe holding groove 22. A step is formed at the groove boundary 23 between the two holding grooves 22, 24 due to the difference in width between the two holding grooves 22, 24. As shown in FIG. 3 and FIG.
The groove surfaces 12, 14 correspond to the outer peripheral surface of the syringe 32 of the syringe 30 and the outer peripheral surface of the ampoule 40, and their bottom portions are cylindrically rounded. As shown in FIGS. 2A and 3, a semi-annular engagement extending circumferentially from the bottom surface 14 of the ampule holding groove 24 near the groove boundary 23 between the syringe holding groove 22 and the ampule holding groove 24. The mating projection 26 protrudes. The engagement protrusion 26 allows the ampoule holding groove 24
Is a first space 24a between the groove boundary 23 and the engagement protrusion 26.
And a second space 24b corresponding to the engagement protrusion 26, and a third space 24c between the engagement protrusion 26 and the end face 19a on the ampoule holding groove 24 side. As shown in FIGS. 2 and 4, a pair of locking projections 28 projecting into the third space 24c are provided on the opposed groove side surfaces 25a and 25b of the third space 24c.
Are formed respectively.

Next, referring to FIG.
The configuration together with the method of using 0 will be described in more detail.

The assisting device 10 is different from the conventional assisting device 70 shown in FIG. That is,
The auxiliary tool 10 is used by being placed on a suitable horizontal plane such as a desk. Since the lower surface 18 of this auxiliary tool 10 is flat, it is stable when placed on a flat surface.

Next, the ampoule 40 is inserted into a predetermined position above the ampule holding position from the groove opening on the upper surface 16 of the auxiliary tool 10. That is, the ampoule 40 is inserted halfway into the ampoule holding groove 24, the plug 42 of the ampoule 40 faces the first space 24 a of the ampoule holding groove 24, and the neck 42 of the ampoule 40 faces the engaging projection 26 of the ampoule holding groove 24. The portion of the ampoule 40 closer to the piston 46 than the neck 42 is placed in the second space 24b.
, Respectively. At this time, the ampoule 40
The lower part of the outer peripheral surface near the center of gravity is supported by the upper surfaces of the locking projections 28a and 28b of the ampoule holding groove 24, and extends stably in substantially the longitudinal direction, that is, the horizontal direction. If the ampoule 40 is displaced from the predetermined position, the ampoule 40 is inclined. That is, the ampoule 40 is moved from the predetermined position to the
5, the center of gravity of the ampoule shifts to the side of the ampoule holding groove 24, that is, to the left in FIG.
Since it is located on the left side of 28b, the end of the ampule 40 on the piston 46 side is lowered and comes into contact with the plane on which the auxiliary tool 10 is placed, and the ampule 40 is inclined obliquely. The ampoule 40
From the predetermined position to the syringe holding groove 22 side, that is, FIG.
Is shifted to the right side, the stopper 42 of the ampoule 40 is inserted into the opening 2 of the syringe holding groove 22 having a width smaller than the outer diameter of the stopper 42.
In contact with the 2x edges 22a, 22b, the ampoule 40 tilts obliquely. Therefore, whether or not the ampoule 40 is arranged at a predetermined position can be easily determined visually or tactually from the inclination of the ampoule 40.

Next, the ampoule 40 placed at a predetermined position
While pressing the stopper 42, the vicinity of the center of gravity of the outer peripheral surface of the ampule 40, that is, the vicinity of the locking projections 28a and 28b is pushed downward. As a result, the outer peripheral surface of the ampoule 40 expands between the locking projections 28a and 28b. Ampoule 40,
When reaching the bottom surface 14 of the ampoule holding groove 24, as shown in FIG. 4, the locking projections 28a and 28b return to their original intervals, and lock the upper side of the outer peripheral surface of the ampoule 40. As shown in FIG.
Since the ampoule holding groove 24 is formed by the thin groove wall 24x, the interval between the locking projections 28a and 28b is easily widened by the elastic deformation of the groove wall 24x.
At the same time, the engagement protrusion 26 of the ampoule holding groove 24 is engaged with the neck 42 of the ampule 40. Therefore, the movement of the ampoule 40 in the radial direction and the axial direction with respect to the auxiliary tool 10 is regulated, and the ampoule 40 is integrally held. Then, as shown in FIG. 4, the uppermost portion 43 of the outer peripheral surface of the ampoule 40 is configured to be substantially the same height as the upper surface 16 of the auxiliary tool 10, so that it can be visually or tactilely sensed.
It can be determined whether the ampoule 40 has been correctly held at the ampoule holding position. In addition, the piston 4 of the ampoule 40
Since the end on the 6 side is exposed to the outside of the assisting device 10, the ampule 40 can be easily removed from the assisting device 10 by lifting the exposed portion.

Next, the syringe 30 is moved toward the ampoule 40 held by the auxiliary tool 10 while the outer peripheral surface of the syringe 32 of the syringe 30 is in sliding contact with the groove surface 12 of the syringe holding groove 22 of the auxiliary tool 10. At this time, insert the injection needle 38 into the ampoule 4
Turn to the 0 side. The syringe 30 is moved while being kept coaxial with the ampule 40 by the groove surface 12 of the syringe holding groove 22. After the injection needle 38 reaches the pierceable seal film of the ampoule 40, the syringe 30 is further moved, and the injection needle 38 is inserted through the pierceable seal film of the ampoule 40. That is, the injection needle 38 is inserted into the ampoule 40. At this time, in the syringe 30, the piston rod 36 side is exposed to the outside of the auxiliary tool 10 from the substantially central portion of the syringe 32.

Next, while holding down the syringe 32 of the syringe 30 from above the auxiliary tool, the piston rod 3 of the syringe 30
6 is drawn out, that is, the piston rod 36 is moved to the right in FIG. 5, and the injection solution in the ampule 40 is sucked into the syringe 30. In this operation, if the scale of the outer peripheral surface of the syringe 32 of the syringe 30 is set to the upper side, it can be confirmed that a predetermined amount of the injection solution has been inhaled.
Since the ampoule 40 has a piston 46 at the other end, when the injection solution is inhaled, the piston 46 in the ampoule 40
Moves to the syringe 30 side, and no gas is generated in the ampule 40. Therefore, even if the ampoule 40 is kept horizontal, gas does not enter the syringe 30 from the ampoule 40. After injecting a predetermined amount of the injection solution into the syringe 30, the syringe 30 is slid to the opposite side and the injection needle 38 is withdrawn from the ampoule 40, and the preparation of the injection solution is completed.

As described above, the auxiliary tool 10 is used by placing it on a flat surface. In a state where the ampoule 40 and the syringe 30 are in communication with each other, the piston of the syringe 30 is pressed while pressing the auxiliary tool 10 and the syringe 30 from above. By operating the rod 36, an injection solution can be prepared in the syringe. Therefore, it is unnecessary to operate the ampoule, the syringe, and the auxiliary tool while holding the ampule, the syringe, and the assisting device in the air as in the case of the conventional device, and easily inject the injection solution into the syringe even when the operating hand shakes. I can prepare.

Further, the syringe inhalation aid 1 can be easily used even if the visual acuity is weak. That is, after judging the stopper 42 side with the neck 44 of the ampoule 40 as a clue, the ampoule 40 is inserted into the groove 2
By moving along the zero, the ampoule 40 can be arranged at a predetermined position. That is, since the outer diameter of the ampoule 40, that is, the stopper 42 is larger than the width of the syringe holding groove 22,
The stopper 42 of the ampoule 40 may enter the ampoule holding groove 24, but not enter the syringe holding groove 22. Furthermore, whether the ampoule 40 is at a predetermined position in the ampoule holding groove 24 can be determined from the inclination of the ampoule 40 as described above. Further, the direction of the syringe 30 can be easily determined from its shape. Therefore, even if the visual acuity is weak, the injection liquid can be easily prepared in the syringe 30 by using the injection liquid inhalation aid 10.

Therefore, the injection liquid inhalation aid 10 having the above-described structure is superior in operability as compared with the conventional auxiliary equipment.

It should be noted that the present invention is not limited to the above embodiment, but can be embodied in various other modes. For example, the groove surfaces 12, 14 of the auxiliary tool 10 may have a flat bottom, that is, a U-shaped cross section, or a V-shaped cross section. Further, a bottle-shaped ampule having only one opening can also be used.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a conventional auxiliary tool. (A) is a plan view and (B) is a sectional view.

FIG. 2 is an explanatory view of an injection liquid inhalation aid of the present invention.
(A) is a plan view and (B) is a sectional view.

FIG. 3 is an enlarged sectional view taken along a line III-III in FIG. 2;

FIG. 4 is an enlarged sectional view taken along line IV-IV in FIG. 2;

FIG. 5 is a plan view of the injection liquid inhalation aid of FIG. 2 in a used state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Injection liquid auxiliary tool 12, 14 Groove surface 16 Upper surface 17a, 17b Side surface 18 Lower surface 19a, 19b End surface 20 Continuous groove (U-shaped groove in cross section) 22 Syringe holding groove 22a, 22b Edge 22x Opening 23 Groove boundary 24 Ampoule holding groove 24a first space 24b second space 24c third space 25a, 25b groove side surface 26 engaging protrusion 28a, 28b locking protrusion 30 syringe 32 syringe 34 piston 36 piston rod 38 injection needle 40 ampoule 42 stopper 43 top 44 neck 46 piston

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A61M 5/24 A61M 5/00 370

Claims (3)

(57) [Claims] 1. A syringe (32) having an outer diameter smaller than the outer diameter of the ampoule (40).
In the injection liquid inhaling aid (10) used when inhaling into a syringe (30) provided with: a lower surface (18) is flat, and an upper surface (16) has both end surfaces (1).
9a, 19b) and U-shaped grooves that are continuous in a straight line
(20) is formed, and the U-shaped cross-section groove (20) has a relatively wide ampule holding groove for holding the ampoule (40).
(24) and a relatively narrow syringe holding groove (22) for slidably holding the syringe (30), and the ampule holding groove (24) holds the ampule (40). Sometimes the ampoule (40) has an engaging projection (26) that engages with the neck (44), and at least the entire half of the ampoule (40) near the seal membrane side from the center of gravity of the ampoule (40) has the entire ampoule holding groove ( 24) The ampoule (40) held in the other end has a length such that the end opposite to the seal membrane of the ampoule (40) is exposed to the outside, and the syringe holding groove (22) is (30) An injection liquid inhalation aid, which is shorter than the entire length of the syringe (32). 2. The ampoule holding groove (24) can be elastically spread on opposing groove side surfaces (25a, 25b), and the ampoule (40) can be attached to the ampoule holding groove (24). The injection liquid inhalation assisting device according to claim 1, further comprising a pair of locking projections (28a, 28b) for locking near the center of gravity of the ampoule (40) when held inside the ampoule. 3. The injection liquid inhalation aid (10) has an elongated shape along the extending direction of the U-shaped groove (20) in cross section,
Both sides of the injection liquid inhalation aid (10) (17A17b) is inclined, the width of the top surface (16) being narrower than the width of the lower surface (18), according to claim 1 or 2, wherein Injection liquid inhalation aid.