JPH09253202A - Liquid medicine medicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve a compact designing by making the internal capacity as large as possible of a liquid medicine bag housing case to enable maintaining of a sufficient strength of a lid body against a pressing force and moreover to facilitate the loading or unloading of the lid body. SOLUTION: A medical fluid bag housing case 31 is made up of a body case 32 to house a liquid medicine bag, a lid body 34 to be openably or closably put on the body case 32 and a keep plate 35 to be put on the outside of the lid body 34. Both side parts of the pressing plate 35 are bent so as to cover both sides of the lid body 34 from outside while a plurality of inwardly bent blades 36 are arranged on lower sides of both the bent side parts at a specified interval. A plurality of protrusions 37 are formed on the upper rim parts of both side walls of the body case 32 at an interval to allow inserting of the blades 36 and the keep plate 35 is slid to removably engage the blades 36 with the undersurface of the protrusions 37.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drug solution administration device in which a drug solution bag is housed in a case and a drug solution is dispensed by pressing the drug solution bag by a pressing means arranged in the case.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 14, a liquid medicine administration tube connected to a connecting needle 14 is prepared by suspending a liquid medicine bag 12 on a stand 11 and piercing a connecting needle 14 into a liquid medicine inlet 13 as shown in FIG. It was usually administered through an injection needle 18 to a patient's vein or the like via a flow control valve 16, an air filter 17, etc.

However, in the above administration method, when the patient goes to the toilet or the like, the stand 11 has to be dragged and moved, which is inconvenient for the patient to move freely.

For this reason, in recent years, there has been proposed a drug solution administration device in which the drug solution bag is put in a drug solution bag housing case without being hung on a stand, and the drug solution is pushed out and administered by a pressing means provided in the case. ing. As the pressing means, for example, one using gas pressure of a small cylinder (see Japanese Utility Model Laid-Open No. 6-46739), one including a pressure plate and a spring, and the like are known.

[0005]

In the drug solution administration device using the above-mentioned pressing means, a strong pressing force is applied to the lid of the drug bag housing case, so that a lid having a strong strength is required. Becomes Also, the fixing force of the mechanism for attaching and detaching the lid to the main body case must be sufficient. Further, in consideration of workability when administering the liquid medicine, it is preferable that the lid attachment / detachment mechanism be a simple operation.

However, if a deep reinforcing rib or the like is formed on the inside of the lid in order to increase the strength of the lid, the volume inside the liquid bag containing case becomes small and the device cannot be made compact. Further, if a screwing or the like is adopted as the lid attaching / detaching mechanism, it is possible to obtain a sufficient fixing force for the lid, but it takes time to attach / detach the lid, resulting in poor workability.

Therefore, an object of the present invention is to make the internal volume of the chemical liquid bag storage case as wide as possible to make the apparatus compact and to sufficiently maintain the strength of the lid against the pressing force, and further An object is to provide a drug solution administration device that can be easily attached and detached.

[0008]

In order to achieve the above-mentioned object, a drug solution administration device according to the present invention presses a drug solution bag housing case and a drug solution bag housed in the drug solution bag container case to let the drug solution flow out. In the liquid medicine administration device including a pressing means, the liquid medicine bag storage case includes a main body case that stores the liquid medicine bag, a lid body that is openably and closably attached to the main body case, and a presser that is placed outside the lid body. A plate, and the pressing plate is bent so that both side portions thereof cover both side surfaces of the lid body from the outside,
The lower sides of the bent side portions have a plurality of claws that are bent inward at predetermined intervals, and the upper edges of both side walls of the main body case have a plurality of claws that are inserted at intervals. When the projection is formed and the opening of the main body case is closed by the lid and the pressing plate, the claw is removably engaged with the lower surface of the projection by sliding the pressing plate. It is characterized by doing so.

In a preferred embodiment of the present invention,
The pressing means is composed of a pressure plate that is in direct contact with the chemical liquid bag or indirectly via a cushioning material, and an elastic means that presses the pressure plate toward the chemical liquid bag.

The elastic means includes a link arranged so as to be tiltable between the pressure plate and the inner wall of the chemical liquid bag housing case, and a first spring member for urging the link so as to increase the angle with respect to the pressure plate. , A second spring member that directly presses the pressure plate toward the liquid medicine bag.

According to a further preferred aspect of the present invention, a recess having a length corresponding to a sliding amount of the pressing plate is provided on one of the contact surfaces of the pressing plate and the lid, and the sliding amount is within the range. A plurality of grooves provided at predetermined intervals are provided, and on the other side of the contact surface, a first projection that fits in the recess, and a second projection that sequentially fits in the groove as the pressing plate slides. Are formed.

According to the present invention, the lid and the holding plate of the drug solution bag housing case are opened to house the drug solution bag in the main body case, and the drug solution administration tube is connected to the mouth of the drug solution bag through the connecting needle or the like. After that, the sliding position of the holding plate with respect to the lid body is adjusted so that the claw of the holding plate enters between the protrusions of the body case, and the lid body and the holding plate are closed so as to cover the opening of the body case. When the holding plate is slid in a predetermined direction in this state, the claws of the holding plate are inserted into and engage with the lower surfaces of the protrusions of the main body case, and the holding plate does not separate from the main body case. As a result, the lid body assembled between the pressing plate and the body case is also fixed to the body case, and the lid body is locked.

In this way, the drug solution bag can be accommodated in the drug solution bag housing case, and the drug solution can be administered by pressing the drug solution bag by the pressing means. At this time, a strong pressure is applied to the lid body by the pressing means, but the lid body is held down by the holding plate on the outside, and the holding plate is locked to the main body case as described above, so that the holding plate is pressed. Even if is made of a relatively thin and light material, it is reinforced by the holding plate, so that sufficient strength is maintained.

After the administration of the liquid medicine is completed, the pressing plate is slid so that the claw is positioned between the protrusions of the main body case, so that the engagement between the claw of the pressing plate and the protrusion of the main body case is released. Therefore, the lid and the pressing plate can be easily opened.

A plurality of claws of the pressing plate are provided at a predetermined interval, and a plurality of protrusions of the main body case are also provided at an interval into which the claws of the pressing plate can be inserted. When the protrusions are engaged with each other, the engagement is simultaneously performed at a plurality of positions on both sides of the pressing plate, and a strong fixing force can be obtained. In addition, the pressing plate can be attached and detached even if the sliding amount is small, and the workability when opening and closing the lid is improved.

[0016]

1 to 13 show one embodiment of the drug solution administration device of the present invention. FIG. 1 is a front sectional view showing an engagement structure of a lid body and a holding plate of a liquid medicine bag containing case, FIG. 2 is a front view of the liquid medicine bag containing case, FIG. 3 is a plan view of the liquid medicine bag containing case, and FIG. 4 is a liquid medicine bag. FIG. 5 is a side view of the storage case, FIG. 5 is a rear view of the holding plate of the chemical liquid bag storage case, and FIG. 6 is a cross-sectional view taken along the line AA ′ in FIG.
7 is a plan view showing the internal structure of the drug administration device, FIG. 8 is a side sectional view showing the internal structure of the drug administration device, FIG. 9 is an exploded perspective view showing the holding structure of the connecting needle, and FIG. 11 is an exploded perspective view showing the pressure plate locking mechanism, FIG. 11 is a perspective view seen from the inside of the pressure plate locking mechanism, FIG. 12 is a perspective view seen from the outside of the pressure plate locking device, and FIG.
4 is a partial cross-sectional view showing a slide click mechanism with respect to FIG.

As shown in FIGS. 2 to 4, a liquid medicine bag accommodating case 31 used in this liquid medicine administration device has a main body case 32 having an open upper surface, and a pivotal attachment portion 33 at the rear end of the main body case 32. Lid 3 that is openably and closably attached via
4 and a holding plate 35 slidably assembled to the outside of the lid 34.

As shown in FIGS. 5 and 6, the holding plate 35 is bent in a U-shaped cross section so that both side portions 35a and 35b cover the both side surfaces of the lid 34 from the outside. A plurality of claws 36 bent inward at predetermined intervals are provided on the lower sides of the side portions 35a and 35b. And the holding plate 35
Is attached to the outside of the lid body 34, and is assembled to the lid body 34 by engaging the claws 36 with the lower sides of both sides of the lid body 34.

On the other hand, referring also to FIGS. 1 and 7, a plurality of projections 37 are formed at predetermined intervals on the upper edges of both side walls of the main body case 32. A wall 38 having an inverted L-shaped cross section and having a predetermined gap between the both side walls is integrally formed below the middle of the both side walls of the main body case 32. A guide groove 39 is formed between the above and the lower surface of the protrusion 37.

As shown in FIG. 1, when closing the lid 34, the body case 32 is covered with the lid 34 to which the pressing plate 35 is attached. At this time, the claw 36 of the pressing plate 35 is brought into contact with the upper surface of the wall 38 through the space between the protrusions 37 of the main body case 32. Then, by sliding the pressing plate 35 in a predetermined direction, the claw 36 is inserted below the protrusion 37 along the guide groove 39. As a result, the claw 36 engages with the projection 37, the pressing plate 35 and the main body case 32 are fitted together, and the pressing plate 3
The lid 34 arranged inside 5 is held in a closed state with respect to the main body case 32. In addition, by sliding the holding plate 35 to disengage the claws 36 from the protrusions 37 and positioning them in the gaps between the protrusions 37, in that state, if the holding plate 35 is pulled upward together with the lid 34, the lid 34 can be opened. You can

As shown in FIG. 2, the center of the front surface of the main body case 32 and the lid body 34 bulges forward, and U-shapes are formed on the front end surfaces of the main body case 32 and the lid body 34 so as to align with each other to form a vertically elongated through hole. Shaped notches 40 and 41 are formed.

As shown in FIG. 7, when the chemical solution bag 12 is accommodated inside the cutout portion 40 of the main body case 32, the neck portion of the mouth portion 13 thereof is inserted, and the mouth portion 13 has the largest diameter. Grooved ribs 42, 43, portions of which engage forward
44 are formed. The grooves of the grooved ribs 42, 43, 44 are wider toward the front, and the width of each groove is such that the neck of the mouth 13 can be inserted. Even if the diameter of the portion 13 changes slightly depending on the type, the mouth portion 13 is engaged with one of the ribs.

Further, the cutout portion 4 of the main body case 32.
In the inner side of 0, the ribs having a U-shape when viewed from above are arranged on both sides in a portion closer to the cutout portion 40 than a portion where the grooved ribs 42, 43, 44 are formed. A guide groove 45 is formed.

As shown in FIG. 9, a plate member 46, which has a disc shape as a whole and has both sides thereof cut in parallel, is inserted into the guide groove 45. The plate member 46 is formed with a recessed groove (a U-shaped cut groove) 47 having an open upper portion for inserting the proximal end portion 14 a of the connecting needle 14. Further, an annular groove 48 formed in an arc shape is formed around the concave groove 47. Since the plate member 46 is inserted into the guide groove 45 by abutting both sides of the plate member cut in parallel to the inner wall of the guide groove 45, the plate member 46 can move up and down along the guide groove 45, but cannot rotate. There is.

In the annular groove 48 of the plate member 46, a base end portion 51 of a tubular member 50 which is cylindrical as a whole and whose peripheral wall is partly cut away in the axial direction to form an insertion portion 49 is inserted. Thus, the tubular member 50 is rotatably attached to the plate member 46. A flange portion 52 is formed near the base end portion 51. The flange portion 52 is inserted into the guide groove 45 together with the plate member 46,
It is designed to be retained.

In FIG. 9, reference numeral 14 is a connecting needle for piercing the mouth 13 of the drug solution bag 12 to let out the drug solution, and the drug solution administration tube 1 is provided at the proximal end 14a thereof.
5 are connected, a flange portion 14b is formed in the middle portion, and a chemical liquid inlet 14c is formed in the tip portion 14d.

As shown in FIGS. 7 and 8, a pressure plate 53 for pressing the chemical liquid bag 12 is arranged in the main body case 32. A pair of parallel ribs 54 extending in the front-rear direction are formed at the center of the lower surface of the pressure plate 53, and slits 55 having a predetermined length are formed at both ends of the rib 54. A bearing 56 is installed in the center of the bottom wall of the main body case 32.

Then, the bottom wall of the main body case 32 and the pressure plate 53.
A pair of plate-shaped links 57 are arranged between and. The pair of links 57 are arranged between the pair of ribs 54 of the pressure plate 53 side by side in the front-rear direction, and are mounted on a pair of support shafts 59 provided in parallel with a bearing 56 arranged in the center of the bottom wall of the main body case 32. , Their pivoted ends are butted. Further, the pair of links 57 have their separated ends pivotally supported by a pair of support shafts 58 inserted into the slits 55 provided at both ends of the rib 54 of the pressure plate 53.

Further, gears 60, 60 meshing with each other are mounted on the ends of the pair of support shafts 59. As a result, when the link 27 rotates to move the pressure plate 53 up and down, the rotation angle of each link 27 is synchronized so that the pressure plate 53 moves up and down in parallel with the bottom wall of the main body case 32. Has become.

Further, at both ends of the support shaft 58 arranged at the front and rear, first spring members 61, 6 made of tension coil springs are provided.
1 is stretched. The first spring members 61, 61 pull the support shaft 58 along the slits 55 of the ribs 54, and press the pair of links 57 as shown by phantom lines in FIG.
The pressure plate 53 is biased so that the pressure plate 53 moves upward.

Further, between the pressure plate 53 and the bottom wall of the main body case 32, there are arranged second spring members 62 composed of compression coil springs arranged at a total of four positions. The second spring member 62 directly presses the pressure plate 53 and urges it to move upward.

By combining with the link 27, the output load of the first spring members 61, 61 can be set so as to increase as the pressure plate 53 moves upward. On the other hand, since the output load of the second spring member 62 is the compression coil spring, the output load decreases as the pressure plate 53 moves upward. Therefore, the total output load of the two is the pressure plate 53.
Can be set to be substantially constant regardless of the amount of movement, or can be set to increase as the pressure plate 53 rises. According to an experiment, in order to always cause the chemical solution in the chemical solution bag 12 to flow out at a constant rate, it is preferable that the total output load is gradually increased as the pressure plate 53 is raised.

The link 27 and the first spring member 6 are provided.
1 and the second spring member 62 constitute the elastic means in the present invention. However, the elastic means may be only the link 27 and the first spring member 61 or the second spring member 62, and the spring member is not only a coil spring but also rubber or the like. Can also be used.

As shown in FIG. 7, the main body case 32
A window 70 is formed on the front surface of the pressure plate 53, and a part 53a of the pressure plate 53 extends in the vicinity of the window 70 so that the up-and-down position of the pressure plate 53 can be visually recognized from the outside. You can see the remaining charge.

Further, projecting portions 71 formed by cutting out the periphery are formed at two positions on both sides of the pressure plate 53 in the front and rear, that is, four positions in total. In connection with this protruding portion 71, FIGS.
A pressure plate lock mechanism as shown in 12 is provided.

As shown in FIG. 10, the pressure plate lock mechanism 72 has a slide member 73, a compression coil spring 74 for urging the slide member 73 in a predetermined direction, and a slide member 73 connected to the slide member 73 outside the main body case 32. Connected member 7
5 is provided.

When the pressure plate 53 is pushed into the slide member 73 against the urging force of the first spring member 61 and the second spring member 62, the taper portions 76 and 76 which come into contact with the protruding portion 71 of the pressure plate 53. At the ends of these tapered portions 76, 76, claw portions 77, 77 cut out so that the protruding portion 71 of the pressure plate 53 engages, and an opening 78 for inserting the compression coil spring 74. And body case 3
Through the elongated holes 79, 79 provided in 2, the connecting portions 80, 80 projecting to the outside of the main body case 32 are formed.

On the bottom wall of the main body case 32, there is provided a guide 81 for sandwiching the slide member 73 with the side wall of the main body case 32 and slidably holding it. The spring property is provided by 82, and when the slide member 73 is mounted, it can be pushed down. A protrusion 83 for receiving one end of the compression coil spring 74 is formed at a predetermined position on the side wall of the main body case 32.

A wall 38 provided outside the main body case 32
An elongated hole 84 located between the protrusions 37 is formed on the upper surface of the. The connecting member 75 is composed of an elongated plate having a thickness that is inserted between the side wall of the main body case 32 and the wall 38.
A projecting piece 85 is formed at the center of the upper side, and the connecting member 7
5 is inserted between the side wall of the main body case 32 and the wall 38, the protruding piece 85 passes through the elongated hole 84 and the wall 38 is inserted.
It is designed to project to the upper surface of. The connecting portions 80, 80 of the slide member 73 are the long holes 7 of the body case 32.
After being taken out through 9, 79, the connecting member 75
The holes 86, 86 are fitted and fixed.

11 and 12 show a state in which the slide member 73, the compression coil spring 74, and the connecting member 75 are assembled to the main body case 32 in this way. One end of the compression coil spring 74 is locked to the projection 83 of the main body case 32, and the other end is locked to the inner end of the opening 78 of the slide member 73, so that the slide member 73 is projected in the protruding direction of the claw 77. Is urged to. Further, the protruding piece 85 of the connecting member 75
Is moved as indicated by an arrow B in FIG. 12, the slide member 73 can be moved.

When the pressing plate 35 is slid so that the pawl 36 is engaged with the protrusion 37 of the main body case 32, the protruding piece 85 is attached to the pawl 36 by increasing the sliding amount of the pressing plate 35. When pushed, the slide member 73 slides against the biasing force of the compression coil spring 74.

Therefore, a slide click mechanism as shown in FIG. 13 is provided between the pressing plate 35 and the lid 34. That is, the lid 34 has a first protrusion 91 protruding upward for restricting a slide stroke of the pressing plate 35, and a slit 92 formed in a U shape when viewed from above.
It has a tongue piece 93 which is separated into a tongue piece by means of, and which has elasticity in the vertical direction, and a second projection 94 formed on the upper end of the tip of this tongue piece 93.

On the other hand, on the lower surface of the pressing plate 35, a cross section formed at predetermined intervals so that the concave portion 95 in which the first protrusion 91 is loosely fitted and the second protrusion 94 are sequentially engaged with a click feeling. Arc-shaped grooves 96, 97, 98 are formed.

The holding plate 35 is slidable within a range in which the first protrusion 91 engages with both ends of the recess 95, and the second protrusion 94 is sequentially fitted into the grooves 96, 97, 98 in the sliding step. The sliding position of the pressing plate 35 is regulated with a click feeling. Then, for example, when the second protrusion 94 is fitted in the groove 96, the claw 3 of the pressing plate 35 is
6 is disengaged from the protrusion 37 of the main body case 32, and the second protrusion 94
When the claw 36 of the holding plate 35 is engaged with the projection 37 of the main body case 32 when the claw 36 is fitted in the groove 97, and the claw 36 of the pressing plate 35 is claw 36 of the locking mechanism when the second projection 94 is fitted in the groove 98. Pushing the protruding piece 85 of the connecting member 75 of the slide member 73
Is slid against the compression coil spring 74.

Reference numeral 100 in FIG. 7 indicates the pressure plate 5.
It is a counter that measures the number of times 3 is pushed down. A projecting piece 101 extending from the pressure plate 53 is connected to the measuring lever of the counter 100, and each time the pressure plate 53 is pushed down, the count number is increased by one, and the count number is displayed through a window portion (not shown) of the main body case 32. It is supposed to do. It should be noted that this count corresponds to the number of times of use of the chemical liquid administration device in normal use, and thereby the parts replacement timing and the like is known in consideration of the fatigue levels of the first spring member 61 and the second spring member 62. It is a standard.

Next, a method of using this drug solution administration device will be described. As shown in FIG. 12, a drug solution administration tube 1
5 is connected to the proximal end portion 14a of the connecting needle 14. A drug solution injection needle is connected to the opposite end of the drug solution administration tube 15 via a flow control valve, an air filter or the like (not shown).

On the other hand, the holding lid 35 is slid so that the claws 36 of the holding lid 35 are positioned between the protrusions 37 of the main body case 32 of the liquid bag containing case 31. In this state, the pressing lid 35 and the lid 34 are attached to the pivotal attachment portion 33 of the lid 34.
The lid 34 is opened by rotating the lid 34 upward through.

When the pressure plate 53 arranged inside the main body case 32 is pushed down, the protruding portion 71 (see FIG. 7) of the pressure plate 53 causes the pressure plate locking mechanism 72 (see FIGS. 11 to 12).
The slide member 73 is brought into contact with the taper portion 76 of the slide member 73, and the slide member 73 is slid rearward against the biasing force of the compression coil spring 74. When the pressure plate 53 is further pushed down, the pressure plate 5
The protrusion 71 of No. 3 gets over the end of the taper portion 76, the slide member 73 returns by the biasing force of the compression coil spring 74, and the protrusion 71 of the pressure plate 53 engages with the lower surface of the claw 77 of the slide member 73. As a result, the pressure plate 53 is locked in the depressed state.

Next, the liquid medicine bag 12 containing the liquid medicine is set in the main body case 32, and the neck portion of the mouth portion 13 thereof is, in the case of this embodiment, the two grooved ribs 4 arranged rearward.
It is inserted in the groove of 3, 44 (see FIG. 7). As a result, the mouth portion 13 engages with the front surface of the grooved rib 43 and can be held so as not to move rearward. Depending on the diameter of the mouth portion 13, it may be engaged with the foremost grooved rib 42 or the rearmost grooved rib 44.

In this state, the connecting needle 14 (see FIG. 9) was pierced into the mouth portion 13 of the liquid medicine bag 12, and the base portion 14a of the connecting needle 14 and the liquid medicine administration tube 15 were inserted into the guide groove 45 of the main body case 32. It is inserted into the groove 47 of the plate member 46 and the insertion portion 49 of the tubular member 50 mounted on the plate member 46. At this time, the rotation angle of the tubular member 50 with respect to the plate member 46 is set so that the released portion of the concave groove 47 and the insertion portion 49 coincide with each other.

As a result, the drug solution administration tube 15 is pulled out through the notch 40 of the main body case 32, and the flange portion 14b of the connecting needle 14 engages with the front surface of the plate member 46. Further, when the tubular member 50 is rotated in this state, the plate member 46 is restricted from rotating in the guide groove 45, so only the tubular member 50 rotates and the groove 47 of the plate member 46. The open portion of can be surrounded by the peripheral wall of the tubular member 50. Therefore, it is possible to prevent the connecting needle 14 from being pulled out upward and the flange portion 14b and the plate member 46 from being disengaged.

Thus, the chemical solution bag 12 is attached to the main body case 3
After being housed in 2, the lid 34 and the pressing plate 35 are closed, and the pressing plate 35 is slid so that its claw 36 is engaged with the protrusion 37 of the main body case 32 as shown in FIG. At this time, the protrusion 94 in FIG. 13 fits into the groove 97. As a result, the lid 34 is attached to the body case 32 by the pressing plate 35.
The opening is kept closed.

Then, the injection needle connected to the tip of the drug solution administration tube 15 is pierced into the vein of the patient, and the pressing plate 35 is pressed.
13 by sliding the projection 94 in FIG. 13 into the groove 9
Fit to 8. At this time, the projections 85 of the connecting member 75 of the pressure plate locking mechanism 72 (see FIGS. 10 to 12) are pushed by the claws 36 of the pressing plate 35, and the slide member 73 resists the biasing force of the compression coil spring 74 and moves backward. The protrusion 71 of the pressure plate 53 is slid onto the claw 77 of the slide member 73.
And the lock of the pressure plate 53 is released.

As a result, the pressure plate 53 is moved by the urging force of the first spring member 61 and the second spring member 62.
Press. A buffer material may be interposed between the pressure plate 53 and the chemical bag 12 to cause the pressing force of the pressure plate 53 to act uniformly on the chemical bag 12. Examples of such a cushioning material include a bag filled with a liquid, a gas, a sol-like substance, beads, etc., a plate made of foamed synthetic resin, a soft elastomer, a gel-like substance, a fibrous sheet or plate such as felt, etc. Is preferably used.

When the drug solution bag 12 is pressed by the pressure plate 53, the drug solution flows out into the connecting needle 14 through the drug solution inlet port 14c of the connecting needle 14 pierced in the mouth portion 13, and passes through the drug solution administration tube 15 and an injection needle (not shown) to the patient. , Etc. Then, as the liquid medicine in the liquid medicine bag 12 flows out, the pressure plate 53 gradually moves toward the lid plate 34, and its position can be visually recognized through the window 70 of the main body case 32, so that the remaining amount of the liquid medicine can be known. . Although the mouth portion 13 of the liquid medicine bag 12 and the connecting needle 14 pierced by the mouth portion 13 also move with the movement of the pressure plate 53, as shown in FIG. 2, notches provided in the main body case 32 and the lid 34. Since the portions 40 and 41 are elongated vertically, the connecting needle 14 can be moved.

After the administration of the drug solution is completed in this way, the injection needle is removed from the patient, and the holding plate 35 is slid, so that FIG.
When the projection 94 in the is fitted into the groove 96,
The pawl 36 is located between the protrusions 37 of the main body case 32, and the engagement between the pawl 36 and the protrusion 37 is released. Then, the pressing plate 35 and the lid 34 are rotated with respect to the main body case 32 to open the lid 34. Further, the tubular member 50 is rotated to align the insertion portion 49 with the opening portion of the concave groove 47 of the plate member 46, and the connecting needle 14 is pulled out from the mouth portion 13 of the liquid medicine bag 12 and removed upward.

In the above embodiment, the pressure plate 53 as the pressing means and the elastic means for urging the pressure plate 53 toward the chemical liquid bag 12, that is, the link 57 and the first spring member 6 are used.
Although the one having the first and second spring members 62 is used,
As the pressing means, a pressurized gas released by a small gas cylinder or the like can also be used.

[0058]

As described above, according to the present invention,
Slide the holding plate on the outside of the lid, and engage the plurality of claws at the lower edges of both sides of the lid plate at regular intervals with the protrusions provided at both sides of the main body case at regular intervals. The lid is locked by locking the lid, and the lid is unlocked by sliding the holding plate to disengage the claws from the protrusions. Therefore, the lid can be attached and detached by a simple operation. .

Further, although a strong pressure is applied to the lid body by the pressing means arranged in the chemical bag housing case, the lid body is reinforced by the holding plate arranged on the outside of the lid body. Sufficient strength can be maintained without forming deep ribs and the like, and the internal volume of the chemical liquid bag storage case can be made as large as possible to make the apparatus compact.

Further, since the plurality of claws of the pressing plate and the projections of the main body case are provided at predetermined intervals so that the claws and the projections engage with each other at a plurality of positions, the lid can be locked securely. Also, the operability can be improved by reducing the sliding amount of the holding plate when the lid is attached and detached.

[Brief description of drawings]

FIG. 1 is a front cross-sectional view showing an engagement structure of a lid body and a holding plate of a liquid medicine bag storage case of a liquid medicine administration device according to an embodiment of the present invention.

FIG. 2 is a front view of the liquid medicine bag storage case.

FIG. 3 is a plan view of the liquid medicine bag storage case.

FIG. 4 is a side view of the liquid medicine bag storage case.

FIG. 5 is a back view of a holding plate of the same liquid bag containing case.

FIG. 6 is a cross-sectional view taken along the line AA ′ in FIG.

FIG. 7 is a plan view showing an internal structure of the drug solution administration device.

FIG. 8 is a side cross-sectional view showing an internal structure of the drug solution administration device.

FIG. 9 is an exploded perspective view showing a holding structure for a connecting needle in the same drug solution administration device.

FIG. 10 is an exploded perspective view showing a pressure plate locking mechanism of the drug solution administration device.

FIG. 11 is a perspective view of the pressure plate lock mechanism as viewed from the inside.

FIG. 12 is a perspective view of the pressure plate lock device as viewed from the outside.

FIG. 13 is a partial cross-sectional view showing a slide click mechanism between a holding plate 35 and a lid body 34 of the drug solution administration device.

FIG. 14 is an explanatory diagram showing an example of a conventional drip device.

[Explanation of symbols]

 12 Chemical Liquid Bag 31 Chemical Liquid Bag Storage Case 32 Main Body Case 33 Pivoting Part 34 Lid Body 35 Holding Plate 36 Claw 37 Protrusion 53 Pressure Plate 55 Slit 57 Link 58, 59 Spindle 60 Gear 61 First Spring Member 62 Second Spring Member 71 Projection Part 72 Pressure plate lock mechanism 73 Slide member 74 Compression coil spring 75 Connecting member 76 Tapered part 77 Claw part 78 Opening 79 Long hole 80 Connecting part 81 Guide 83 Projection 84 Long hole 85 Projecting piece 86 Hole 91 First projection 92 Slit 93 Tongue piece 94 second protrusion 95 concave portion 96, 97, 98 groove

Claims (3)

[Claims] 1. A chemical bag containing case (31) and a pressing means (5) for pressing the chemical solution bag (12) contained in the chemical solution bag containing case (31) to let out the chemical solution.
3, 57, 61, 62), the chemical liquid bag storage case (31) includes a main body case (32) for storing the chemical liquid bag (12), and a main body case (32). A lid (34) that can be opened and closed,
A pressing plate (35) which is placed on the outside of the lid (34), and the pressing plate (35) has both side portions (35a, 35b) thereof.
Is bent so as to cover both side surfaces of the lid body (34) from the outside, and the bent side portions (35a, 35b)
A plurality of claws (36) bent inward on the lower side at regular intervals
A plurality of protrusions (37) are formed at upper edges of both side walls of the body case (32) at intervals so that the claws (36) can be inserted into the body case (32). With the opening of the lid body (34) and the holding plate (35) closed, the holding plate (3)
5) The medicinal solution administration device, wherein the claw (36) is removably engaged with the lower surface of the protrusion (37) by sliding 5). 2. The chemical solution bag (1)
2) a pressure plate (53) which is directly or indirectly abutted on the chemical liquid bag (1) via the cushioning material.
The drug solution administration device according to claim 1, wherein the drug solution administration device comprises an elastic means for pressing in the direction 2). 3. The holding plate (35) and the lid (3)
On one of the contact surfaces of 4), a concave portion (95) having a length corresponding to the sliding amount of the pressing plate (35) and a plurality of grooves (96, 96) provided at predetermined intervals within the sliding amount range.
97, 98) are provided, and on the other side of the contact surface, the first projection (91) fitted into the recess (95) and the groove are sequentially fitted along with the sliding of the holding plate (35). Second
The drug solution administration device according to claim 1 or 2, wherein a projection (92) is formed.