JP7340846B2 - Syringe for stirring - Google Patents

Description

The present invention relates to a stirring syringe configured to be able to stir solids and liquids within a barrel.

As disclosed in Patent Document 1, for example, the above-mentioned stirring syringe is a cylinder that is cylindrical and has a nozzle on its tip side, and a gasket and a plunger are sequentially inserted from the rear end side ( A syringe is known that is equipped with a so-called barrel and in which a fluid, solid, or spherical stirring member is introduced.

In such a syringe, the inner surface on the tip side of the barrel and the front surface of the gasket opposite to the inner surface are formed in a concave shape to match the outer diameter of the stirring member, and when the plunger is pushed all the way, the gasket and the stirring member are separated. During this period, no gap is created between the inner surface and the stirring member.

Therefore, when the syringe is shaken, the fluid and solids are stirred by the stirring member moving within the cylinder, and when the plunger is pushed in, the fluid with the solids stirred can be discharged from the cylinder without leaving any residue behind.

JP2011-72471A

By the way, in the above-mentioned conventional syringe in which a nozzle is provided in a cylinder, the inside of the nozzle communicates with the space inside the cylinder, that is, the space for stirring the liquid and solid with the stirring member. When the liquid entered the nozzle, it sometimes remained in the liquid without being stirred.

Note that the conventional syringe described above stirs liquid and solid with a stirring member placed inside the cylinder, but similar problems occur with syringes that stir only liquid and solid placed inside the cylinder. obtain.

In view of these circumstances, the present invention aims to provide a stirring syringe that can suppress undissolved solids.

The stirring syringe of the present invention is
A barrel that is cylindrical and open at both ends, into which a liquid and a solid to be stirred are introduced;
A stirring cap that is replaceable with a nozzle cap with a nozzle is provided on one end of the barrel on one opening side,
The stirring cap has a circular inner top surface whose front view shape in the axial direction of the barrel corresponds to the one opening of the barrel,
The inner top surface is a flat surface or a curved surface.

When stirring a liquid and a solid with the stirring syringe configured as described above, a stirring cap is attached to the one end of the barrel in place of the nozzle cap. Further, in the stirring cap, since the circular inner top surface corresponding to the one opening is a flat or curved surface, it is possible to prevent solids from remaining undissolved due to the solids coming out of the stirring area.

Further, in the stirring syringe of the present invention,
The stirring cap has a cylindrical inner peripheral wall surface disposed in front of the one end of the barrel while being attached to the one end of the barrel,
one opening of the inner peripheral wall surface opens toward the inside of the barrel;
The other opening of the inner peripheral wall surface may be closed by the inner top surface.

According to this configuration, a space for stirring the liquid and the solid is formed in front of the one end of the barrel, that is, on the outside of the barrel, by the inner top surface and the inner circumferential wall, so that the liquid and the solid can be mixed. This prevents the inner surface of the barrel from being damaged during stirring.

Furthermore, in the stirring syringe of the present invention,
The stirring cap has a corner where an outer peripheral edge of the inner top surface and an edge on the closed end side are continuous,
The corner portion may be curved with a curvature equal to or less than a curvature of a ball member inserted into the barrel to stir the solid and the liquid.

According to this configuration, in the stirring cap, which is a space for stirring liquid and solid, the corner formed by the outer peripheral edge of the inner top surface and the edge on the closed end side is curved. Solids and solid debris are less likely to accumulate in the corners. In addition, since the corners are curved with a curvature less than the curvature of the ball member, when the ball member is inserted into the barrel to stir the liquid and solid, the ball member can also come into contact with the corner. This makes it easier for the solids to be stirred.

Furthermore, in the stirring syringe of the present invention,
The inner top surface may be curved in a convex shape outward in the axial direction when the stirring cap is attached to the one end of the barrel.

According to this configuration, the space in which the liquid and solid are stirred expands toward the outside of the barrel, making it difficult for solids to enter the barrel, thereby making it easier to prevent damage to the inner surface of the barrel.

Further, in the stirring syringe of the present invention,
The inner top surface may curve convexly inward in the axial direction in a state where the stirring cap is attached to the one end of the barrel.

According to this configuration, the solid and the liquid can be stirred while the solid is dispersed outward in the direction intersecting the axial direction, so that the solid can easily mix with the liquid.

In the stirring syringe of the present invention,
The nozzle cap is
an external fitting part that is externally fitted onto the one end of the barrel;
a cylindrical nozzle part formed in the outer fitting part, the nozzle part having a cylindrical shape and having a flow path communicating between the inside and outside of the barrel;
and a filter structure provided within the nozzle portion.

According to this configuration, even if there is undissolved solid, it can be dammed up by the filter structure, so it is possible to prevent undissolved solid from being discharged to the outside of the barrel. This can prevent clogging of catheters, etc. In addition, by stirring the undissolved solids that have been dammed up by the filter structure with the liquid again, the entire amount of solids can be discharged without leaving any residue.

in this case,
The nozzle part is configured such that a rear end side in the flow path in the outflow direction of the liquid becomes a housing part capable of housing a ball member inserted into the barrel to crush the solid,
The filter structure may be located on the distal end side of the accommodating portion.

According to this configuration, the ball member inserted into the barrel can be moved from the inside of the barrel to the rear end side of the nozzle part, that is, into the housing part, so if the ball member is moved and stored in the housing part, for example, , it becomes easier to push the plunger inserted into the barrel all the way to the tip inside the barrel.

As described above, the stirring syringe of the present invention has the excellent effect of suppressing undissolved solids.

FIG. 1 is an exploded sectional view of a stirring syringe according to an embodiment of the present invention, in which a stirring cap is exploded from a barrel. FIG. 2 is an exploded cross-sectional view of the stirring syringe according to the same embodiment, and is a cross-sectional view of the nozzle cap taken apart from the barrel. FIG. 3 is a view of the inside of the nozzle portion viewed from the direction of arrow III in FIG. FIG. 4 is a cross-sectional view taken along the IV-IV cross-sectional line in FIG. FIG. 5 is an explanatory diagram of the usage state of the stirring syringe according to the same embodiment, and is an explanatory diagram of the state in which a liquid, a tablet, and a ball member are put into the barrel. FIG. 6 is an explanatory diagram of the usage state of the stirring syringe according to the same embodiment, and is an explanatory diagram of the state in which the stirring cap is attached to the barrel. FIG. 7 is an explanatory diagram of the usage state of the stirring syringe according to the same embodiment, and is an explanatory diagram of the state in which the nozzle cap is attached to the barrel. FIG. 8 is an explanatory diagram of the usage state of the stirring syringe according to the same embodiment, and is an explanatory diagram of the state in which the stirring liquid in the barrel is being discharged to the outside of the barrel. In FIG. 9, (a) is a partially enlarged view of a stirring syringe according to another embodiment of the present invention, and (b) is a partially enlarged view of a stirring syringe according to another embodiment of the present invention. be. FIG. 10 is a partially enlarged view of a stirring syringe according to yet another embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A stirring syringe according to an embodiment of the present invention will be described below with reference to the accompanying drawings. The stirring syringe is a syringe configured to stir a solid and a liquid to be stirred within a barrel.

As shown in FIG. 1, the stirring syringe 1 of this embodiment has a cylindrical shape with both ends open, and includes a barrel 2 into which a liquid and a solid to be stirred with the liquid are introduced, and one side of the barrel 2. a stirring cap 3 which is removably attached to one end of the opening side and is attached to the one end when stirring liquid and solid within the barrel 2; and a stirring cap 3 which is removable from the one end of the barrel 2; A nozzle cap 4 (see FIG. 2) is attached to one end of the barrel 2 when discharging the stirred liquid and solids inside the barrel 2 to the outside of the barrel 2, and a nozzle cap 4 is inserted into the other opening side of the barrel 2. a gasket 5 that blocks the inside of the barrel 2 in the axial direction (blocks the inside of the barrel 2 in the axial direction); and a ball member 6 that is inserted into the barrel 2 to stir solid and liquid in the barrel 2. , is equipped with. Note that the barrel 2 can be replaced with a stirring cap 3 and a nozzle cap 4.

The barrel 2 includes a cylindrical barrel body 20, a detachable structure 21 for attaching and detaching the stirring cap 3 to one end of the barrel body 20 on one opening side, and a gasket inserted into the barrel body 20. 5 from the other opening of the barrel body 20.

The one opening of the barrel body 20 serves as an input port 200 into which solids, liquids, and ball members 6 are input, and the other opening of the barrel body 20 serves as an input port 200 for inserting the gasket 5 in the axial direction of the barrel 2. It serves as an insertion port 201 into which a plunger is inserted for moving (sliding) along.

In this embodiment, the end of the barrel body 20 on the insertion port 200 side will be referred to as a front end 202, and the end of the barrel body 20 on the insertion port 201 side will be referred to as a rear end 203.

The attachment/detachment structure 21 is constituted by a thread formed on the outer peripheral surface of the front end 202 of the barrel body 20, and allows the stirring cap 3 or the nozzle cap 4 to be screwed onto the front end 202 of the barrel body 20. It looks like this.

The retaining structure 22 includes a protrusion 220 that protrudes radially inward of the barrel body 20 from the inner circumferential surface (inner circumferential surface on the rear end side) of the rear end 203 of the barrel body 20. .

The retaining structure 22 of this embodiment is constituted by one protrusion 220 that is formed in an annular shape that is continuous over the entire circumferential circumference of the inner peripheral surface on the rear end side of the barrel main body 20. It may be constituted by a plurality of protrusions 220 formed at predetermined intervals in the circumferential direction.

The gasket 5 is configured such that its outer peripheral side surface is in close contact with the entire inner peripheral surface of the barrel 2 when it is inserted into the barrel body 20 . Further, the gasket 5 is movable (slidable) along the axial direction of the barrel body 20 while its outer circumferential side remains in close contact with the inner circumferential surface of the barrel body 20 .

Further, when the gasket 5 moves toward the rear end of the barrel body 20, it comes into contact with the front surface (the surface facing the front end 202 of the barrel body 20) of the retaining portion (protrusion 220), thereby causing the barrel Movement of the main body portion 20 toward the rear end side is restricted.

The stirring cap 3 is configured to cover the input port 200 when placed over the front end 202 of the barrel body 20.

The stirring cap 3 according to the present embodiment includes a stirring section 30 in which a stirring chamber 300, which is a concave space opened so as to be continuous with the input port 200, is formed, and an opening side (the other opening side) of the stirring section 30. It has a cylindrical attachment part 31 that extends from the end of the barrel 2 and is attached to the front end part 202 of the barrel 2 in an externally fitted state.

The inner surface 301 of the stirring part 30 forming the stirring chamber 300 includes an inner top surface 301a whose front view shape in a direction corresponding to the axial direction of the barrel body part 20 is a circular shape corresponding to the input port 200; When the stirring cap 3 is attached to the front end 202 of the barrel body 20, a cylindrical inner circumferential wall surface 301b disposed in front of the front end 202 of the barrel body 20, an outer circumferential edge of the inner top surface 301a, and an inner A corner 301c is formed by continuing the edge of the peripheral wall surface 301b on the closed end side.

The inner top surface 301a has a circular shape whose front view shape in the axial direction of the barrel body 20 corresponds to the input port 200. Further, the inner top surface 301a of this embodiment is configured such that the entire inner side of the outer peripheral edge forming the corner 301c is flat.

In a state where the stirring cap 3 is attached to the front end portion 202 of the barrel body 20, the axial direction of the inner peripheral wall surface 301b coincides with or substantially coincides with the axial direction of the barrel body 20.

The corner portion 301c is a curved surface that is concave toward the outside of the stirring portion 30. The curvature of the corner portion 301c is set to be less than or equal to the curvature of the ball member 6. Note that the corner portion 301c is annular, and the curvature in the circumferential direction is also set to be equal to or less than the curvature of the ball member 6.

As described above, since the stirring cap 3 is configured to be screwed onto the front end 202 of the barrel body 20, the attachment/detachment structure 21 for the barrel 2 is formed on the inner peripheral surface of the attachment portion 31. A thread groove that can be screwed into the thread is formed.

As shown in FIG. 2, the nozzle cap 4 includes an external fitting part 40 that is externally fitted onto the front end 202 of the barrel main body 20, and a nozzle part 41 that projects from the external fitting part 40. It has a cylindrical nozzle part 41 in which a communication passage 410 is formed to communicate the inside and outside of the nozzle 20, and a filter structure 42 provided inside the nozzle part 41. That is, the nozzle cap 4 is a cap with a nozzle.

The external fitting part 40 includes a cylindrical part 400 that is cylindrical and into which the front end part 202 of the barrel body part 20 can be inserted, and a closing part 401 that closes one opening of the cylindrical part 400. It has a closing part 401 against which the end surface of the front end part 202 of the barrel main body part 20 inserted into the closing part 400 abuts.

As described above, since the nozzle cap 4 is also configured to be screwed onto the front end 202 of the barrel body 20, the attachment/detachment structure 21 for the barrel 2 is formed on the inner peripheral surface of the cylindrical portion 400. A thread groove is formed into which the thread can be screwed.

The inner surface of the closing portion 401 has a shape corresponding to the front surface of the gasket 5 (the surface disposed toward the front end portion 202 side of the barrel body portion 20). The front surface of the gasket 5 of this embodiment is formed in the shape of a mountain that swells forward as it goes from the outer peripheral end toward the center. It is formed in a concave shape extending outward in the axial direction of the barrel body 20.

Therefore, when the cylindrical part 400 is screwed onto the front end part 202 of the barrel body part 20, the end surface of the front end part 202 of the barrel body part 20 comes into contact with the outer peripheral edge of the closing part 401, and the gasket 5 is attached to the barrel body part 20. When the gasket 5 moves to the front end 202 side, the front surface of the gasket 5 comes into contact with a portion of the inner surface of the closing portion 401 that is inside the outer peripheral edge.

The nozzle portion 41 has a cylindrical shape, and a communication path 410 is configured by an internal space. Further, since the base end side of the nozzle part 41 is configured to open inside the barrel body part 20 and the distal end side of the nozzle part 41 is configured to open outside the barrel body part 20, the inside of the barrel body part 20 and the outside communicate with each other through a space inside the nozzle portion 41 (that is, a communication path 410).

Further, the nozzle portion 41 is configured to accommodate the ball member 6 within the communication path 410.

The nozzle part 41 according to the present embodiment includes a cylindrical ball accommodating part 411 protruding from the outer surface of the closing part 401 and a cylindrical nozzle body part 412 extending from the tip of the ball accommodating part 411. . Note that the flow path of the nozzle section 41 is composed of a space inside the ball storage section 411 and a space inside the nozzle body section 412. The space on the rear end side in the outflow direction is a space that also has the function of accommodating the ball member 6.

Further, although the base end 412a and the tip 412b of the nozzle body 412 are configured as separate bodies, the base end 412a and the tip 412b of the nozzle body 412 may be integrated.

The inner diameter of the ball accommodating portion 411 is larger than the diameter of the ball member 6. The internal depth (depth in the axial direction) of the ball accommodating portion 411 is greater than or equal to the diameter of the ball member 6. Therefore, the ball member 6 accommodated in the ball accommodating portion 411 is configured to have a size such that it does not protrude into the barrel body portion 20.

Here, the nozzle cap 4 according to this embodiment has a ball receiving structure 43 that receives the ball member 6 accommodated in the ball accommodating portion 411.

As shown in FIG. 3, the ball receiving structure 43 is configured to receive the ball member 6 accommodated in the ball accommodating portion 411 on the tip side of the ball accommodating portion 411, and furthermore, the ball receiving structure 43 is configured to receive the ball member 6 accommodated in the ball accommodating portion 411. 6 and the inner surface of the ball accommodating portion 411, a gap 430 is formed for allowing the stirring liquid to flow. Note that the filter structure 42 is not illustrated in FIG. 3 .

The ball receiving structure 43 according to the present embodiment includes a receiving convex portion 431 protruding from the inner surface of the ball accommodating portion 411. The ball receiving structure 43 according to the present embodiment includes a plurality of receiving convex portions 431 formed at intervals in the circumferential direction of the inner circumferential surface of the ball accommodating portion 411. Further, the ball receiving structure 43 is dimensioned such that the ball member 6 can be separated from the ball receiving structure 43 when the gasket 5 is retreated toward the rear end side of the barrel body 20.

The filter structure 42 is provided in front of the ball receiving structure 43 within the flow path. The filter structure 42 of this embodiment is provided between the ball accommodating portion 411 and the nozzle body portion 412.

Further, the filter structure 42 of this embodiment has a flat plate shape, and has a structure in which a plurality of through holes 420 penetrating from one surface to the other surface are formed, as shown in FIG. For example, a mesh structure or the like may be used as long as the stirring liquid can be circulated. The diameter of the through hole 420 of the filter structure is preferably the same as or smaller than the inner diameter of a catheter or the like attached to the tip of the nozzle part 41.

The ball member 6 is spherical, as shown in FIGS. 1 and 2. Further, as described above, the ball member 6 is inserted into the barrel body 20 in order to stir the liquid and the solid, but for example, if the solid is a tablet or the like, it also has the function of crushing the solid. It is supposed to be done.

The configuration of the stirring syringe 1 according to this embodiment is as described above. Next, a method of stirring solid and liquid using the stirring syringe 1 will be explained.

In this embodiment, the stirring syringe 1 rotates around the central axis of the barrel body 20 (rotation) and rotates around the axis intersecting the central axis of the barrel body 20 (revolution). The stirring method will be explained on the premise that a solid and a liquid are stirred within the barrel body 20 by simultaneously performing the above steps. In addition, in this embodiment, the stirring method will be explained using a case where the solid is a tablet as an example.

When stirring a solid and a liquid with the stirring syringe 1, the liquid, the solid, and the ball member 6 are respectively introduced into the barrel body 20. In this embodiment, as shown in FIG. 5, since the insertion port 201 of the barrel body 20 is closed with the gasket 5, the liquid W, the solid T, and the ball member 6 are inserted into the barrel body 20 from the input port 200. put it into.

Subsequently, as shown in FIG. 6, the stirring cap 3 is attached to the front end 202 of the barrel body 20. This completes the preparation for stirring the liquid W and the solid T.

Subsequently, the stirring syringe 1 is rotated and revolved. In addition, in this embodiment, since the barrel body 20 is rotated and revolved in an inclined posture such that the front end 202 side is located lower than the rear end 203 side of the barrel body 20, the solid T and the ball The member 6 will move within the stirring chamber 300.

In this way, the solid T mixes with the liquid W while colliding with the ball member 6 or being crushed by being sandwiched between the ball member 6 and the inner surface of the stirring section 30 .

When using a stirred liquid obtained by stirring solid T and liquid W, after removing the stirring cap 3 from the front end 202 of the barrel body 20, as shown in FIG. Attach the nozzle cap 4. Then, as shown in FIG. 8, by inserting the plunger 7 into the barrel body 20 through the insertion port 201 and pushing the gasket 5 toward the front end 202 of the barrel body 20, the stirred liquid is passed through the nozzle 41. can be discharged to the outside of the barrel body 20.

In addition, when using a stirred liquid obtained by stirring solid T and liquid W, after removing the stirring cap 3 from the front end 202 of the barrel body 20, the stirred liquid may be directly transferred to another container, etc. .

As described above, according to the stirring syringe 1 according to the present embodiment, when stirring the liquid W and the solid T with the stirring syringe 1 having the above configuration, the stirring cap 3 is used instead of the nozzle cap 4. Since the circular inner top surface 301a, which is attached to the front end 202 of the barrel body 20 and corresponds to the input port 200, is a flat or curved surface, there is no recess into which the solids T can enter, and the solids T are kept in the stirring chamber. 300 (area where solid T and liquid W are stirred) and remaining undissolved can be suppressed.

Therefore, the stirring syringe 1 can have an excellent effect of suppressing the undissolved solid T. Furthermore, even if there is some undissolved solid T, since the filter structure 42 is installed in the communication passage 410, this undissolved undissolved substance can be dammed up in the communication passage 410, and if necessary, Otherwise, the undissolved material can be stirred again.

Further, since the stirring chamber 300 is formed outside the barrel 2, it is possible to prevent the solid T or fragments of the solid T from colliding with and damaging the inner surface of the barrel 2 when the liquid W and the solid T are stirred. This maintains the close contact between the barrel 2 and the gasket 5, and prevents liquid from leaking when the agitated liquid is discharged.

Since the corner 301c of the inner surface forming the stirring chamber 300, where the outer peripheral edge of the inner top surface 301a and the closed end side edge of the inner peripheral wall surface 301b are continuous, is curved, It becomes difficult for T and solid T fragments to remain. Further, since the curvature of the corner 301c is less than the curvature of the ball member 6, the solid T is crushed because the ball member 6 can contact not only the inner top surface 301a and the inner peripheral wall surface 301b but also the corner 301c. It becomes easier.

Further, since the nozzle cap 4 is configured to accommodate the ball member 6 in the ball accommodating portion 411, the movement of the gasket 5 toward the front end side of the barrel body 20 may be obstructed by the ball member 6. can be suppressed. In particular, in this embodiment, since the entire ball member 6 is housed in the ball accommodating part 411, the gasket 5 can be moved to the frontmost side in the barrel body 20, thereby allowing This makes it easier to drain the stirred liquid without leaving any residue.

Further, since the ball member 6 is received by the receiving convex portion 431 with a gap 430 between it and the inner surface of the ball accommodating portion 411 through which the stirred liquid can flow, the flow of the stirred liquid is not obstructed. There is.

Note that the stirring syringe 1 according to this embodiment is not limited to the one embodiment described above, and of course various changes can be made without departing from the gist of the present invention.

In the above embodiment, it is assumed that the stirring syringe 1 includes the nozzle cap 4, but the configuration is not limited to this. For example, the syringe 1 for stirring does not need to be provided with the nozzle cap 4 when the stirring liquid in the barrel body 20 is directly transferred to another container or the like.

In the stirring syringe 1 of the above embodiment, the ball member 6 is inserted into the barrel body 20, but the configuration is not limited to this. For example, the stirring syringe 1 has a ball member 6 in the barrel body 20 when the solid T introduced into the barrel body 20 is a powder or the like that can be dissolved in the liquid W without being crushed. It is also possible to stir the solid T and liquid W without adding.

In the embodiment described above, thread grooves were formed in the stirring cap 3 and nozzle cap 4, and threads were formed in the front end portion 202 of the barrel body portion 20, but the structure is not limited to this. For example, the stirring cap 3 and the nozzle cap 4 may be threaded, and the front end 202 of the barrel body 20 may be threaded.

Further, in the embodiment described above, the stirring cap 3 and the nozzle cap 4 were configured to be screwed together with the front end portion 202 of the barrel body portion 20, but the configuration is not limited to this. The stirring cap 3 and the nozzle cap 4 may be configured to be press-fitted into the front end 202 of the barrel body 20, for example, as long as they do not come off the barrel body 20 when the solid T and liquid W are stirred.

In the embodiment described above, the inner top surface 301a is a flat surface, but the structure is not limited to this. For example, the inner top surface 301a may be a curved surface. Specifically, the inner top surface 301a may be curved in a convex shape outward in the axial direction when the stirring cap 3 is attached to the front end 202 of the barrel body 20. In this case, the inner top surface 301a may have a tapered shape as shown in FIG. 9(a), or may have a hemispherical shape as shown in FIG. 9(b).

In this way, the space in which the liquid W and the solid T are stirred expands toward the outside of the barrel 2, making it difficult for the solid T to enter the barrel 2, thereby suppressing damage to the inner surface of the barrel 2. It becomes easier to do.

Further, the inner top surface 301a may be curved convexly inward in the axial direction when the stirring cap 3 is attached to the front end 202 of the barrel body 20, as shown in FIG. . In this way, the solid T and the liquid W can be stirred while the solid T is dispersed outward in the direction intersecting the axial direction, so that the solid T is easily mixed into the liquid W.

DESCRIPTION OF SYMBOLS 1... Syringe, 2... Barrel, 3... Stirring cap, 4... Nozzle cap, 5... Gasket, 6... Ball member, 20... Barrel main body part, 21... Detachable structure, 22... Removal prevention structure, 30... Stirring part, 31... Mounting part, 40... External fitting part, 41... Nozzle part, 42... Filter structure, 43... Ball receiver structure, 200... Inlet, 201... Insertion port, 202... Front end, 203... Rear end, 220... Projection Part, 300... Stirring chamber, 301a... Inner top surface, 301b... Inner peripheral wall surface, 301c... Corner, 400... Cylindrical part, 401... Closing part, 410... Communication path, 411... Ball accommodating part, 412... Nozzle body Part, 430...Gap, 431...Receiving convex part, T...Solid, W...Liquid

Claims (4)

A barrel that is cylindrical and open at both ends, into which a liquid and a solid to be stirred are introduced;
A stirring cap that is replaceable with a nozzle cap with a nozzle is provided on one end of the barrel on one opening side,
The stirring cap has a circular inner top surface whose front view shape in the axial direction of the barrel corresponds to the one opening of the barrel,
The inner top surface is a flat or curved surface,
The stirring cap has a cylindrical inner peripheral wall surface disposed in front of the one end of the barrel while being attached to the one end of the barrel,
one opening of the inner peripheral wall surface opens toward the inside of the barrel;
the other opening of the inner peripheral wall surface is closed by the inner top surface,
The stirring cap has a corner where an outer peripheral edge of the inner top surface and an edge on the closed end side are continuous,
The corner is curved with a curvature equal to or less than a curvature of a ball member inserted into the barrel to stir the solid and the liquid.
Syringe for stirring. A barrel that is cylindrical and open at both ends, into which a liquid and a solid to be stirred are introduced;
A stirring cap that is replaceable with a nozzle cap with a nozzle is provided on one end of the barrel on one opening side,
The stirring cap has a circular inner top surface whose front view shape in the axial direction of the barrel corresponds to the one opening of the barrel,
The inner top surface is a flat or curved surface,
The nozzle cap is
an external fitting part that is externally fitted onto the one end of the barrel;
a cylindrical nozzle part formed in the outer fitting part, the nozzle part having a cylindrical shape and having a flow path communicating between the inside and outside of the barrel;
a filter structure provided within the nozzle portion;
The nozzle portion is configured such that a rear end side in the flow path in the outflow direction of the liquid serves as a storage portion capable of accommodating a ball member inserted into the barrel to crush the solid;
The filter structure is located on the distal end side of the accommodating part,
Syringe for stirring. The inner top surface is curved convexly outward in the axial direction when the stirring cap is attached to the one end of the barrel.
The syringe for stirring according to claim 1 or 2 . The inner top surface is curved convexly inward in the axial direction when the stirring cap is attached to the one end of the barrel.
The syringe for stirring according to claim 1 or 2 .