JP5778012B2 - Syringe type ejector - Google Patents

Description

  The present invention relates to a syringe-type ejector having a nozzle that can be attached to and detached from a tip tube provided in a syringe, and in which a liquid content from a spout of the nozzle is poured out in a foam or mist form through a barrier member. is there.

  Known syringe-type ejectors have a spray nozzle that can be attached to and detached from a tip cylinder provided in a barrel (syringe), and can spray the content liquid from a spout through a valve disposed in the spray nozzle. (For example, refer to Patent Document 1).

JP 2001-137344 A

  However, in such a conventional syringe-type ejector, when the nozzle is removed, the distal end cylinder of the syringe is opened, so that the content liquid cannot be sealed in advance to form a cartridge. In addition, if the syringe is filled with the content liquid for the purpose of spraying a small amount, it is not suitable for spraying a small amount of the content liquid because the usability is deteriorated due to the downsizing of the barrel.

  An object of the present invention is to provide a novel syringe-type ejector that can be poured into a foam or mist without sacrificing operability even with a small amount of content liquid while making the content liquid into a cartridge. It is to provide.

The present invention extends a rod disposed in a through-hole formed in a distal end cylindrical portion of a syringe to a piston slidably disposed in the syringe and pumps the piston between the rod and the distal end cylindrical portion. An operating device that forms a passage for the air,
A cylindrical member having a plunger that fills the content liquid and pushes out the content liquid using a pressing force from the rod as an urging force; a nozzle that houses the cylindrical member inside and is attached to the distal end cylindrical portion of the syringe; and a nozzle A liquid member housed inside and pushed out from the tubular member, and a barrier member that forms a mist-like or foamy content liquid through the air pumped by the piston,
The cylindrical member has a cartridge body that forms a sealed space between the plunger and the stopper plug together with the plunger by sealing the front end with a stopper and the rear end with a plunger. It is an auxiliary cartridge capable of accommodating a cylindrical member from which a plug is removed through an opening formed at the end.

  In the present invention, when the plunger is inserted through the opening formed at the rear end of the cylindrical member, an inner groove for allowing air in the filling space of the content liquid to escape can be provided inside the cylindrical member.

  The present invention provides a cartridge main body in which the content liquid is sealed in advance by simply filling the content liquid from an opening formed at the rear end of the cylindrical member sealed by a mortar plug and then sealing the rear end with a plunger. Can be configured. The cartridge main body can be disposed in the auxiliary cartridge after removing the diaper plug from the cylindrical member and using the nozzle having the barrier member as an auxiliary cartridge. Thereby, a cartridge main body can be attached with respect to an operating instrument using an auxiliary cartridge.

  In addition, since the auxiliary cartridge has a nozzle and a barrier member such as a spray valve (spindle element) and a mesh ring that are incorporated in advance in the nozzle separately from the cartridge main body, the content liquid is supplied to the barrier member built in the nozzle. Without contact, the content liquid can be separately sealed as a cartridge body filled with the content liquid.

  In addition, if the cartridge body is attached to the operating instrument using an auxiliary cartridge to form a syringe-type ejector, the volume corresponding to the cylindrical member can be made into a foam or mist with a simple operation by simply pushing the rod together with the piston. It can be taken out.

  In addition, since the plunger for pushing out the content liquid is operated by the rod pushed out by the piston, a cylindrical member (cylinder) and a plunger (piston) can be adopted as a mechanism for filling and pumping the content liquid. A syringe (cylinder) and a piston can be adopted as a mechanism for driving the plunger. In this case, only the mechanism for filling and pumping the content liquid, that is, only the cartridge body (tubular member and plunger) can be reduced without downsizing the mechanism for driving the plunger. Therefore, the present invention is effective when it is desired to take out a small amount of the content liquid in the form of foam or mist without impairing operability.

  As described above, according to the present invention, a small amount of content liquid can be poured into a foam or mist without sacrificing operability while making the content liquid into a cartridge.

It is a longitudinal cross-sectional view which shows the syringe type nasal drop ejector which is one form of this invention. It is a longitudinal cross-sectional view which expands and shows the form partially. (a) is a side view which shows the cylindrical member which concerns on the form in part, (b) is an arrow line view which shows (a) from D direction. It is an expansion perspective view which shows the rear end of the cylindrical member based on the form. (a) is a longitudinal cross-sectional view which shows the assembly | attachment process of the auxiliary cartridge which concerns on the same form, (b) is a longitudinal cross-sectional view which shows an auxiliary cartridge. It is a longitudinal cross-sectional view which expands the same form partially and shows the state at the time of the injection. (a) is a longitudinal sectional view showing a cartridge main body according to the embodiment, and (b) is a longitudinal sectional view showing a manufacturing process of the cartridge main body. It is a longitudinal cross-sectional view which shows the state which assembled | attached the cartridge main body to the auxiliary cartridge and comprised the cartridge. The process of assembling the cartridge body with the auxiliary cartridge is shown, (a) is a longitudinal sectional view showing a state where the cartridge body is opened, and (b) is a state where the opened cartridge body is assembled with the auxiliary cartridge. FIG.

  Hereinafter, with reference to drawings, one form of a syringe type ejector which is the present invention is explained in detail.

  In FIG. 1, the code | symbol 1 is a syringe-type nasal drop ejector which is one form of this invention. The nasal spray ejector 1 includes a cartridge 1A and an operation instrument 1B.

  Reference numeral 2 denotes an air syringe as an injection outer cylinder. The air syringe 2 is integrally provided with a distal end cylindrical portion 2c via an annular shoulder portion 2b formed at one end of a hollow body portion 2a. The distal end cylinder portion 2c has a smaller diameter than the body portion 2a, and a through hole is formed inside thereof so as to communicate with a hollow space formed inside the body portion 2a. Further, the air syringe 2 is integrally provided with a distal outer cylinder 2d surrounding the distal cylinder 2c. Further, the air syringe 2 is integrally provided with a finger hook portion 2e at the rear end thereof.

  Reference numeral 3 denotes an operation shaft. The operation shaft 3 has an air piston 3a, and a pressing portion 3b is provided at the rear end. The air piston 3 a is slidably held inside the body 2 a of the air syringe 2. Thereby, if a user puts a finger on the finger hook part 2e of the air syringe 2 and presses the pressing part 3b of the operating shaft 3, the air piston 3a pushes out the air in the air syringe 2 toward the distal end cylinder part 2c. be able to.

  Further, the operation shaft 3 integrally has a plunger rod 3c as a rod. The plunger rod 3c extends from the air piston 3a toward the distal end cylindrical portion 2c of the air syringe 2, and is disposed in a through hole formed inside the distal end cylindrical portion 2c. The plunger rod 3c has a smaller diameter than the through hole formed inside the distal end cylindrical portion 2c. Thereby, as shown in FIG. 2, the plunger rod 3c has an annular first passage (hereinafter referred to as "first air passage") r1 between the tip cylinder portion 2c and the air pumped by the air piston 3a. Form.

  The operation shaft 3 has an annular seal member 4 to improve the sealing performance in the air syringe 2. In the present invention, the “piston” that pushes out air in the air syringe 2 includes not only the air piston 3 a but also a combination of the air piston 3 a and the seal member 4. Further, the operation shaft 3 is interposed between the air syringe 2 and an elastic member 5 such as a return spring so that the operation shaft 3 is automatically returned to the initial position when the operation shaft 3 is pushed in and then released. It is configured.

  The operating instrument 1B is configured as described above, while the cartridge 1A is configured as follows.

  Reference numeral 6 denotes a cylindrical member filled with the content liquid (nasal spray) C. An opening A1 is formed at the rear end of the tubular member 6 as shown in FIG. As shown in FIG. 2, the opening A <b> 1 is sealed by a plunger 7 disposed inside the cylindrical member 6. The plunger 7 is slidably held inside the cylindrical member 6. The plunger 7 is in contact with the tip of the plunger rod 3c through the opening A1. Accordingly, when the operating shaft 3 is pushed into the air syringe 2, the plunger 7 pushes out the content liquid C from the opening A2 formed at the tip of the cylindrical member 6 by using the pressing force from the plunger rod 3c as a biasing force. be able to.

  Reference numeral 8 denotes a nozzle attached to the distal end cylindrical portion 2c. The nozzle 8 has a body portion 8a for accommodating the cylindrical member 6 inside, and a flange portion 8b is integrally provided at the rear end thereof. The flange portion 8b functions as a screw portion, and is detachably screwed into a screw portion 2s formed on the inner side of the distal end outer cylinder portion 2d. Thereby, the nozzle 8 can be detachably attached to the operating instrument 1B by being screwed into the air syringe 2.

  The nozzle 8 accommodates the cylindrical member 6 in the trunk portion 8a through an opening A3 formed at the rear end thereof. As shown in FIG. 3, two outer grooves 6 a extending along the axis O are formed on the outer peripheral surface of the cylindrical member 6. Further, as shown in FIG. 4, a notch 6b is formed at the rear end of the cylindrical member 6 at a position aligned with the outer groove 6a in the circumferential direction (direction around the axis O). Thereby, when the cylindrical member 6 is accommodated in the nozzle 8 and attached to the distal end cylindrical portion 2c, as shown in FIG. 2, between the rear end side of the cylindrical member 6 and the distal end of the distal end cylindrical portion 2c, A second passage (hereinafter referred to as “second air passage”) r2 through which air from the air piston 3a pushed out through the first air passage r1 passes is formed. Further, a third passage (hereinafter referred to as “third air passage”) r3 through which the air pushed out through the second air passage r2 passes is formed between the tubular member 6 and the nozzle 8.

  Reference numeral 9 is a mesh ring. As shown in FIG. 5A, the mesh ring 9 is formed by fixing a mesh member 9b to one end face of the ring member 9a. The mesh ring 9 is inserted through an opening A3 formed at the rear end of the nozzle 8, as shown in FIG. As a result, the mesh ring 9 is disposed adjacent to the opening A4 formed at the tip of the inside of the nozzle 8, as shown in FIG. 5 (b).

  Further, as shown in FIG. 5A, the nozzle 8 is configured such that the inner diameter φ1 of the space for accommodating the cylindrical member 6 is larger than the inner diameter φ2 of the space for accommodating the mesh ring 9. In addition, as shown in FIG. 3A, the cylindrical member 6 is formed with a distal end portion 6f that is tapered toward the distal end. As a result, as shown in FIG. 2, a merging portion S communicating with the air passages r1 to r3 is formed between the mesh ring 9 and the tip portion 6f of the cylindrical member 6.

  In the nasal spray ejector 1, when the operating shaft 3 of the operating instrument 1B is pushed in, as shown by the solid line in FIG. 6, the air piston 3a pushes the air in the air syringe 2 toward the distal end cylindrical portion 2c, and the plunger The rod 3c pushes the plunger 7 disposed inside the cylindrical member 6, so that the content liquid C is transferred to the mesh ring 9 and the cylindrical shape from the tip of the cylindrical member 6 as shown by the solid white line in FIG. It pushes out to the junction part S formed between the front-end | tip parts 6f of the member 6. FIG.

  On the other hand, the air pushed out by the air piston 3a is, as shown by the solid line in FIG. 6, from the air passage r1 formed between the distal end cylindrical portion 2c of the air syringe 2 and the plunger rod 3c and the nozzle 6 and the nozzle. 8 is pushed out to the merging section S through the air passages r2 and r3 formed there between. As a result, as shown in the figure, after the air to be pushed out to the air piston 3a is mixed with the content liquid C pushed out to the plunger 7 at the merging portion S, the mesh ring is drawn as shown by a bold solid line in the figure. 9 can be sprayed in the form of bubbles from the opening A4 of the nozzle 9 toward the outside. Therefore, according to the present embodiment, it is possible to take out a volume corresponding to the tubular member 6 in the form of a foam by a simple operation by simply pushing the operating shaft 3.

  Further, as shown in FIG. 7A, the cylindrical member 6 can be configured as a portable cartridge body 1A-1. As shown in the drawing, the cartridge body 1 </ b> A- 1 is sealed at the tip end of the cylindrical member 6 by a mortar plug 6 c and at the rear end by a plunger 7. Thereby, the cylindrical member 6 forms the sealed space in which the content liquid C is accommodated between the plunger 7 and the stopper plug 6 c together with the plunger 7.

  The mortar plug 6c is formed integrally with the distal end portion 6f of the cylindrical member 6 via an annular thin portion 6d. Thus, as shown in FIG. 7 (b), if the cylindrical member 6 is arranged so that the throat plug 6c is at the bottom, the content liquid C is passed through the opening A1 formed at the rear end of the cylindrical member 6. Can be filled. After filling the content liquid C, the opening A1 can be sealed by passing the plunger 7 through the opening A1, as shown in FIG.

  The thin-walled portion 6d can be cut when a certain force is applied while holding the mug plug 6c. As a result, an opening A2 is formed at the tip of the cylindrical member 6.

  In addition, in this embodiment, two inner grooves 6 g are formed inside the cylindrical member 6. The inner groove 6g is formed with a certain length from the rear end of the tubular member 6. As shown in FIG. 7A and the like, the inner groove 6g forms an air vent passage between the plunger 7 and the filling space of the content liquid C to the outside. As a result, as shown in FIG. 7B, when the plunger 7 is inserted through the opening A1 formed at the rear end of the cylindrical member 6, excess air remaining in the filling space of the content liquid C is released. Can do.

  Further, since the nozzle 8 can be attached to and detached from the air syringe 2 while the cylindrical member 6 is accommodated, as shown in FIG. 8, the auxiliary cartridge 1A-2 that constitutes the cartridge 1A together with the opened cylindrical member 6; can do. As shown in FIG. 5B, the auxiliary cartridge 1 </ b> A- 2 is configured by housing two mesh rings 9 inside the nozzle 8. The two mesh rings 9 are sequentially accommodated so that the mesh members 9b are arranged on the upstream side and the downstream side when the content liquid C is ejected.

  The nozzle 8 is provided with a plurality of protrusions 8 c in the storage space of the cylindrical member 6 at intervals in the circumferential direction. As shown in FIG. 8, the protrusion 8 c is hooked on an annular recess 6 e formed in the body portion 6 a of the cylindrical member 6, and holds the cylindrical member 6 so as not to come off. Since the protrusions 8c are provided at intervals in the circumferential direction, the air flow in the third air passage r3 is ensured.

  When the user uses the nasal spray ejector 1, first, as shown in FIG. 9A, the user opens the throat plug 6 c from the cartridge body 1 </ b> A- 1. As a result, an opening A2 is formed at the tip 6f of the cylindrical member 6. Next, as shown in FIG. 9B, the opened cartridge main body (cylindrical member 6) 1A-1 is inserted into the auxiliary cartridge (nozzle 8) from the front end portion (the front end portion 6f of the cylindrical member 6) side. A cartridge 1A as shown in FIG. 8 is formed by being inserted into an opening A3 formed at the rear end of 1A-2. As described above, the cartridge 1A can be detachably attached to the operating instrument 1B.

  In the present embodiment, the mug plug 6c is configured to be larger than the opening A3 of the nozzle 8. In this case, the plug 6c prevents the nozzle 8 from being inserted into the opening A3. Therefore, it is possible to prevent the auxiliary cartridge 1A-2 from being erroneously set and used without removing the diaper 6c from the cartridge body 1A-1.

  As described above, in this embodiment, after the content liquid C is filled from the opening A1 formed at the rear end of the cylindrical member 6 sealed by the plug 6c, the rear end is simply sealed by the plunger 7. The cartridge body 1A-1 in which the content liquid C is sealed in advance can be configured. The cartridge main body 1A-1 can be arranged in the auxiliary cartridge 1A-2 after removing the throat plug 6c from the cylindrical member 6 and using the nozzle 8 incorporating the mesh ring 9 as the auxiliary cartridge 1A-2. . Thereby, after forming the cartridge 1A together with the cartridge body 1A-1 using the auxiliary cartridge 1A-2, the nasal spray ejector 1 can be formed by attaching the cartridge 1A to the operating instrument 1B.

  Moreover, since the auxiliary cartridge 1A-2 has a mesh ring 9 built in the nozzle 8 in advance separately from the cartridge body 1A-1, the content liquid C is put into the mesh ring 9 built in the nozzle 8. Without making contact, the content liquid C can be separately sealed as the cartridge body 1A-1 filled with the content liquid C.

  Further, in this embodiment, after the cartridge 1A is formed together with the cartridge body 1A-1 using the auxiliary cartridge 1A-2, the cartridge 1A is mounted on the operating instrument 1B to form the syringe-type ejector 1, whereby the air piston The volume corresponding to the tubular member 6 can be taken out in a bubble shape by a simple operation of simply pushing the plunger rod 3c together with 3a.

  The plunger 7 for pushing out the content liquid C is operated by the plunger rod 3c pushed out by the air piston 3a. Therefore, as a mechanism for filling and pumping the content liquid C, a cylindrical member (cylinder) 6 and a plunger ( (Piston) 7 can be employed, and as a mechanism for driving the plunger 7, an air syringe (cylinder) 2 and an air piston 3a can be employed. In this case, only the mechanism for filling and pumping the content liquid C, that is, only the cartridge main body 1A-1 (the cylindrical member 6 and the plunger 7) can be downsized without downsizing the mechanism for driving the plunger 7. it can. Therefore, this embodiment is effective when it is desired to take out a small amount of the content liquid C in a foam state without impairing operability.

  Thus, according to the present embodiment, while the content liquid C is made into a cartridge, even a small amount of the content liquid C can be poured out in a bubble shape without impairing the operability.

  The above description only shows one embodiment of the present invention, and various modifications can be made within the scope of the claims. For example, the air passages r <b> 2 to r <b> 3 formed between the tubular member 6 and the nozzle 8 form protrusions at intervals in the circumferential direction of the tubular member 6 to form a gap with the nozzle 8. There is no limitation on the formation method. The same applies to the air passage r1 and the merging portion S formed between the tubular member 6 and the distal end tubular portion 2c. According to the present invention, instead of the mesh ring 9, a barrier member such as a spray valve (spindle element) can be employed to pour out in the form of a mist.

  The present invention can be applied to various devices as long as it is an ejector intended to eject the content liquid mixed with air. Also, the type of contents is not limited.

DESCRIPTION OF SYMBOLS 1 Syringe-type nasal spray ejector 1A Cartridge 1A-1 Cartridge main body 1A-2 Auxiliary cartridge 1B Operation instrument 2 Air syringe 2a Body part 2b Shoulder part 2c Tip cylinder part 2d Tip outer cylinder part 2e Finger hook part 3 Operation shaft 3a Air Piston 3b Shaft pressing part for operation 3c Plunger rod (rod)
4 Seal member 5 Elastic member 6 Cylindrical member 6a Outer groove (air passage)
6b Notch (air passage)
6c drill plug 6g inner groove (air vent passage)
6e Annular recess 7 Plunger 8 Nozzle 8a Body 8b Flange 8c Protrusion 9 Mesh ring 9a Ring member 9b Mesh member A1 Cylindrical member rear end opening A2 Cylindrical member front end opening A3 Nozzle rear end opening A4 Nozzle R1 First air passage r2 Second air passage r3 Third air passage S Junction

Claims (2)

The passage of the air pressure-fed by the piston between the rod and the tip tube portion is extended between the rod and the tip tube portion in the through hole formed in the tip tube portion of the syringe to the piston slidably arranged in the syringe. An operating instrument to form a
A cylindrical member having a plunger that fills the content liquid and pushes out the content liquid using a pressing force from the rod as an urging force; a nozzle that houses the cylindrical member inside and is attached to the distal end cylindrical portion of the syringe; and a nozzle A liquid member housed inside and pushed out from the tubular member, and a barrier member that forms a mist-like or foamy content liquid through the air pumped by the piston,
The cylindrical member has a cartridge body that forms a sealed space between the plunger and the stopper plug together with the plunger by sealing the front end with a stopper and sealing the rear end with the plunger.
The syringe is a syringe-type ejector characterized in that the nozzle is an auxiliary cartridge capable of accommodating a cylindrical member from which a throat plug is removed through an opening formed at a rear end thereof.   In Claim 1, when a plunger is inserted through the opening part formed in the rear end of the said cylindrical member inside the cylindrical member, it has an inner groove which escapes the air of the filling space of a content liquid, It is characterized by the above-mentioned. Syringe type ejector.

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