DISPENSER DEVICE FOR SPRAYING POWDER

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims a priority to Korean Patent Application No. 10-2023-0028780, filed on Mar. 3, 2023. The entire disclosure of the application identified in this paragraph is incorporated herein by reference.

FIELD

The present disclosure relates to relates to a dispenser device for spraying powder and, more specifically, to a dispenser device for spraying powder, improved to prevent a catheter from bending, to prevent fine spray phenomenon of powder, and to eliminate the flow of powder during spraying.

BACKGROUND

Gastrointestinal bleeding is a clinical disorder commonly encountered in clinical practice, and more than 80% of gastrointestinal bleeding occurs in the upper gastrointestinal tract. Upper gastrointestinal bleeding is a disorder in which blood is vomited or a bloody stool is caused by bleeding from lesions in the esophagus, stomach, and duodenum. In upper gastrointestinal bleeding, more than 90% of bleeding sites can be identified through endoscopy, and 40-50% are known to be caused by gastric or duodenal ulcer bleeding. Recently, polypectomy of the stomach or large intestine, mucosal resection for the treatment of early gastric cancer and colorectal cancer, and therapeutic endoscopic procedures have been widely performed. However, bleeding during or after these procedures requires emergency surgery or even leads to death. Hemostasis using an endoscope is used to treat bleeding during surgery, gastrointestinal bleeding, and bleeding occurring during tissue collection for biopsy. The hemostasis using an endoscope is a method of hemostasis by bringing an endoscopic conduit (catheter) inserted into the body close to a damaged mucous membrane requiring hemostasis, and then administering and spraying a hemostatic agent in powder form through the conduit. To this end, various types of pharmaceutical powder sprayer have been developed.

However, the powder spraying device developed to date has the following problems: even in a situation where powder does not need to be sprayed, a fine spray phenomenon in which powder is sprayed finely is observed, resulting in clogging of the end of a catheter conduit; and in the process of operation after attaching a thin catheter to the powder spraying device, the catheter is bent, causing powder to be improperly sprayed or a conduit of the catheter to be damaged. In addition, there is a user requirement that a function enabling a user to stop and respray powder according to his/her will during a procedure is required. Accordingly, there is a need to develop an improved form of a dispenser device for spraying pharmaceutical powder.

SUMMARY

As described above, the present inventors have made intensive research efforts to develop an improved form of dispenser device for spraying pharmaceutical powder to solve the above problems. As a result, the present disclosure was completed by introducing a tube cap in the shape of a fallopian tube and introducing a rotary valve for opening and closing to completely control the flow of pharmaceutical powder.

Accordingly, an aspect of the present disclosure is to provide an improved dispenser device for spraying pharmaceutical powder, including the above-described configuration.

Another aspect of the present disclosure is to provide a method of using the dispenser device for spraying pharmaceutical powder, described above.

According to one aspect of the present disclosure, the present disclosure provides a dispenser device 1 for spraying pharmaceutical powder, including:

- (a) a drug container adapter (100) enabling a pharmaceutical powder container to be mounted thereto;
- (b) a housing (200) including a first transfer tube (201) communicating with the drug container adapter (100) to allow the pharmaceutical powder delivered from the pharmaceutical powder container to pass therethrough, and a second transfer tube (202) communicating with the first transfer tube (201) so as to discharge the pharmaceutical powder together with air, the second transfer tube (202) having both ends communicating with a conduit mounting part (203) and an air inlet (204), respectively; and
- (c) a control valve (300) located in the middle of the first transfer tube of the housing to control the flow of the pharmaceutical powder.

According to another aspect of the present disclosure, the present disclosure provides a method of using the dispenser device for spraying pharmaceutical powder, the method including the following operations of:

- (i) coupling an air supply device (2) to the air inlet (204) of the dispenser device for spraying pharmaceutical powder;
- (ii) coupling a tube cap (400) and a conduit to the conduit mounting part (203);
- (iii) coupling a container containing pharmaceutical powder to the drug container adapter (100);
- (iv) turning on the powder of the air supply device (2); and
- (v) controlling the opening/closing state of the control valve and spraying the pharmaceutical powder.

The present disclosure relates to a dispenser device for spraying pharmaceutical powder, including the above-described configuration, and the dispenser device can prevent a catheter from bending and spray pharmaceutical powder without fine spray of the powder.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other aspects, features, and advantages of the present disclosure will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

FIG. 1A is a perspective view of a dispenser device for spraying pharmaceutical powder according to an embodiment of the present disclosure.

FIG. 1B is an exploded view of the dispenser device for spraying pharmaceutical powder, illustrating each component thereof according to an embodiment of the present disclosure.

FIG. 2 is a cross-sectional view of a housing according to an embodiment of the present disclosure.

FIG. 3 illustrates a structure in which the diameters of both ends of a flow path in a valve are wider than the diameter of the middle of the flow path to prevent the valve of the present disclosure from becoming inoperable.

FIG. 4 illustrates a fine protrusion formed to block fine gaps in a portion (a valve rotation part) where a control valve is combined with the housing in the device for spraying pharmaceutical powder according to the present disclosure.

FIG. 5 is an enlarged view of a portion where the valve and the fine protrusion of a valve accommodating part are in contact with each other.

FIG. 6 is a perspective view and a cross-sectional view illustrating a combination of a drug container adapter, a drug container, and the housing according to the present disclosure.

FIG. 7 illustrates the shape of a tube cap configured to guide an existing conduit 20 in general use to a conduit mounting part.

FIG. 8 illustrates a tube cap configured to guide the conduit 20 to the conduit mounting part in order to prevent the conduit 20 from bending, according to the present disclosure.

FIG. 9 illustrates the shape of a bottom cap 500 having a groove formed on the bottom surface thereof so that pharmaceutical powder may be collected at a portion where first and second transfer tubes of the present disclosure meet and communicate with each other.

FIG. 10 illustrates an air supply device additionally coupled to the dispenser device for spraying pharmaceutical powder according to the present disclosure.

FIGS. 11A and 11B, which illustrates a dispenser device for spraying pharmaceutical powder in which a first transfer tube and a control valve of the present disclosure have two separate channels, respectively, is a cross-section view of the control valve in an open state.

FIG. 12, which illustrates a dispenser device for spraying pharmaceutical powder in which the first transfer tube and the control valve of the present disclosure have two separate channels, respectively, is a cross-sectional view of the control valve in a closed state.

FIG. 13 illustrates a three-dimensional structure and a cross section of the control valve of FIG. 12, which has two separate channels and is in a closed state.

DETAILED DESCRIPTION

Hereinafter, the present disclosure will be described in more detail through embodiments of the present disclosure with reference to the accompanying drawings. However, these embodiments are only for explaining the present disclosure in more detail, and the present disclosure may be implemented in many different forms. It will be apparent to those skilled in the art that the scope of the present disclosure is not limited by these embodiments according to the gist of the present disclosure, and the present disclosure is only defined by the claims to be described later.

In addition, terms used in the present disclosure are only used to describe specific embodiments, and are not intended to limit the present disclosure. Singular expressions include plural expressions unless the context clearly dictates otherwise. In the entire specification, “including” a certain element means that other elements may be further included without excluding other elements unless otherwise stated.

In the present specification, the term “dispenser device for spraying pharmaceutical powder” will be described as an example of a type of sprayer that separately includes an air supply device and combines the same with the dispenser device for spraying pharmaceutical powder. However, the “dispenser device for spraying powder” intended to be encompassed in the present specification means a part or all of a device having a purpose for spraying powder.

Therefore, the dispenser device for spraying powder of the present disclosure may mean some components of a powder sprayer, or an entire finished product including the same, and if the dispenser device for spraying powder is a product having elements described with reference to the claims and drawings of the present specification, it may mean not only the form of a dispenser device for spraying powder presented as some components in an embodiment of the present specification, but also all finished products including the same.

In addition, the “dispenser device for spraying powder” may be expressed in terms, such as “powder sprayer”, “powder spraying device”, “powder spray”, “powder spray device”, etc. If the device is a device used to apply pharmaceutical powder to the human body, it may be interpreted as the “dispenser device for spraying powder”.

According to one aspect of the present disclosure, a dispenser device for spraying pharmaceutical powder is provided.

In this specification, the term “pharmaceutical powder” refers to drugs in powder form that are used clinically, and may also be used as expressions, such as “medicinal powder”, “medicinal powder body”, and “powdered drug”. Examples of the pharmaceutical powder include various products, such as hemostatic agents, anti-adhesion agents, wound dressings, and medicinal adhesives, but are not limited thereto, and those skilled in the art will easily understand that various pharmaceutical powders may be included.

FIG. 1A is a perspective view of a dispenser device for spraying pharmaceutical powder according to an embodiment of the present disclosure.

FIG. 1B is an exploded view of the dispenser device for spraying pharmaceutical powder, illustrating each component thereof according to an embodiment of the present disclosure.

FIG. 2 is a cross-sectional view of a housing according to an embodiment of the present disclosure.

Referring to FIGS. 1A, 1B, and 2, the dispenser device for spraying pharmaceutical powder according to an embodiment of the present disclosure includes: (a) a drug container adapter 100 enabling a pharmaceutical powder container to be mounted thereto; (b) a housing 200; and (c) a control valve 300 for controlling the flow of the pharmaceutical powder.

More specifically, the housing includes: a first transfer tube 201 communicating with the drug container adapter 100 to allow the pharmaceutical powder delivered from the pharmaceutical powder container to pass therethrough; and a second transfer tube 202 communicating with the first transfer tube 201 so as to discharge the pharmaceutical powder together with air, the second transfer tube 202 having both ends communicating with an air inlet 204 and a conduit mounting part 203, respectively.

In addition, the control valve 300 is located in the middle of first transfer tube 201 of the housing.

As shown in FIG. 2, in the device of the present disclosure, the first transfer tube 201 of the housing may be communicated in the vertical direction, but is not limited thereto.

In an embodiment of the present disclosure, the valve is fitted into the housing.

In an embodiment of the present disclosure, a packing (e.g., O-ring) is inserted into a gap between the valve and the housing coupled to each other, to prevent leakage of air or pharmaceutical powder. In a specific embodiment of the present disclosure, packings are inserted in the flow path through which the valve and the first transfer tube communicate with each other, and one packing is disposed at each of both the valve side and the first transfer tube side.

In an embodiment of the present disclosure, a hook is formed in the valve to be insertion-coupled (snap-fit) to the housing, and the housing has a locking ledge on which the hook may be hooked and fixed.

In an embodiment of the present disclosure, the dispenser device for spraying pharmaceutical powder may further include a valve cap 310 configured to cover a portion where the hook of the valve and a locking ledge structure of the housing are coupled with each other.

In an embodiment of the present disclosure, the valve may be a ball valve or a butterfly valve having a flow path formed in the valve.

In an embodiment of the present disclosure, the valve controls the flow of pharmaceutical powder and opening/closing thereof by rotating the valve at an angle of 90° or less.

Referring to FIG. 3, in a specific embodiment of the present disclosure, when the valve of the present disclosure is in an open state, the inner diameter of the flow path in the valve narrows in the direction in which the pharmaceutical powder passes, and then widens again. Accordingly, the cross section of the flow path of the valve has a shape such as a sagittal cross section of a Venturi tube or an hourglass.

The structure as described above may prevent the operation of the valve from being disturbed due to internal friction caused by the penetration of pharmaceutical powder between the valve and the housing during opening and closing operations of the valve.

In another specific embodiment of the present disclosure, the inner diameter of the valve of the present disclosure may be maintained constant.

In another specific embodiment of the present disclosure, the inner diameter of the valve of the present disclosure may become narrower in the direction in which the pharmaceutical powder passes, and then remain constant.

In a specific embodiment of the present disclosure, the inner diameters of both ends of the flow path of the valve are identical to or similar (±10%) to the inner diameter of the first transfer tube, but are not limited thereto.

When the valve is in an open state, the pharmaceutical powder passes through the first transfer tube and reaches a portion communicating with the second transfer tube, and when the valve is in a closed state, the pharmaceutical powder may be completely blocked from passing through the first transfer tube, and thus, fine spray phenomenon of the pharmaceutical powder may be prevented.

FIG. 4 illustrates a fine protrusion formed to block fine gaps in a portion (a valve rotation part) where the control valve is combined with the housing in the device for spraying pharmaceutical powder according to the present disclosure.

FIG. 5 is an enlarged view of a portion where the valve and the fine protrusion of a valve accommodating part are in contact with each other.

Referring to FIGS. 4 and 5, in an embodiment of the present disclosure, in order to open and close the valve, the fine protrusion 206 may be formed on a portion (the valve accommodating part 205) where the valve is rotated in the housing.

The fine protrusion 206 blocks a fine gap between the valve and the valve accommodating part 205 while maintaining the operability of the valve, thereby blocking the pharmaceutical powder from finely flowing (leaking) through the gap.

In an embodiment of the present disclosure, as the result of applying a circular fine protrusion of 0.05 mm to the place where the housing and the valve are assembled, the leakage of powder through the gap between the housing and the valve was blocked while the operability was maintained.

FIG. 6 is a perspective view and a cross-sectional view illustrating a combination of a drug container adapter, a drug container, and the housing according to the present disclosure.

Referring to FIG. 6, in an embodiment of the present disclosure, the drug container may be coupled to the drug container adapter in the vertical direction. As described above, when the drug container is coupled to the drug container adapter or the housing in the vertical direction, the pharmaceutical powder inside the drug container may be more efficiently transferred toward the housing by gravity.

In an embodiment of the present disclosure, the drug container adapter may be insertion-coupled (snap-fit) or screw-coupled to the housing. A sealing packing (i.e., an adapter seal 40) is inserted between the drug container adapter and the housing.

In an embodiment of the present disclosure, the pharmaceutical powder container may be screwed to the drug container adapter, but is not limited thereto.

In an embodiment of the present disclosure, as noted from the result of coupling the drug container adapter having the structure shown in FIG. 6 to the housing together with the adapter seal 40, combining the drug container containing the pharmaceutical powder, and testing for airtightness, the pressure loss was maintained at 0.005 psi or lower for 5 seconds. Therefore, the NBM internal technical selection was satisfied.

FIG. 7 illustrates the shape of a tube cap configured to guide an existing conduit 20 in general use to a conduit mounting part.

FIG. 8 illustrates a tube cap configured to guide the conduit 20 to the conduit mounting part in order to prevent the conduit 20 from bending, according to the present disclosure.

Referring to FIGS. 7 and 8, in an embodiment of the present disclosure, the device for spraying powder further includes a tube cap 400 coupled in a direction parallel to the second transfer tube.

The tube cap 400 is coupled to the conduit mounting part of the housing, and has a lumen diameter at a distal portion greater than a lumen diameter at a proximal portion, based on the housing.

The tube cap 400 has a lumen diameter at a distal portion greater than a lumen diameter at a proximal portion, based on the housing, and may be thus referred to as a fallopian tube cap due to the trumpet-like shape thereof. The tube cap guides the conduit 20 to be mounted to the conduit mounting part, prevents bending and deformation of the conduit 20 caused by the diameter of the distal part being wider than the diameter of the proximal part, and provides a free range of motion.

In an embodiment of the present disclosure, the tube cap 400 is communicated to enable the conduit 20 to pass therethrough, and guides the conduit to the conduit mounting part 203.

In addition, when the tube cap 400 is coupled to the conduit mounting part of the housing, the conduit mounting part and the tube cap are brought into close contact with each other. When the conduit is pushed into the conduit mounting part through the tube cap to be coupled thereto, the inner diameter of the end of the conduit is increased by the elastic force of the conduit, and the tube cap and the conduit mounting part are in close contact with each other. As a result, the tube cap 400 may also perform a role of maintaining airtightness so that air does not leak while the conduit does not escape out of the conduit mounting part.

Referring to FIG. 9, in an embodiment of the present disclosure, the bottom cap 500 (bottom cap) having a groove formed on the bottom surface thereof in the direction of air flow is coupled to the portion where the first transfer tube and the second transfer tube meet and communicate with each other. The groove may be formed in a U-shape or V-shape.

In another embodiment of the present disclosure, the bottom cap 500 may be provided at a portion where the first transfer tube and the second transfer tube of the present disclosure meet and communicate with each other. The bottom cap 500 blocks the lower surface of the first transfer tube to enable the pharmaceutical powder falling along the first transfer tube to be moved and sprayed along the air flow direction of the second transfer tube. The shape of the bottom cap 500 may have a flat bottom surface, a round bottom surface, etc., in addition to the above-described U-shape, V-shape, or other grooved shapes, but is not limited thereto.

In an embodiment of the present disclosure, a packing (e.g., O-ring) is inserted into a gap between the bottom cap 500 and the housing coupled to each other, to prevent leakage of air or powder.

As shown in FIG. 9, the inner diameter of the first transfer tube widens toward the second transfer tube. When the inner diameter of the first transfer tube widens toward the second transfer tube as described above, the pharmaceutical powder is attached to the sidewall of the first transfer tube, thereby minimizing the waste thereof.

FIG. 10 illustrates an air supply device additionally coupled to the dispenser device for spraying pharmaceutical powder according to the present disclosure.

As shown in FIG. 10, the dispenser device for spraying powder of the present disclosure may further include an air supply device 2 or may be coupled thereto, the air supply device 2 being coupled to the air inlet 204 of the housing.

In addition, in an embodiment of the present disclosure, the device may further include an air filter 30 between the air inlet 204 and the air supply device 2.

In an embodiment of the present disclosure, the air inlet 204 of the housing and the air supply device 2 or the air inlet 204 of the housing and the air filter 30 may be screw-coupled or insertion-coupled (snap-fit) to each other, but is not limited thereto.

In an embodiment of the present disclosure, a packing (e.g., O-ring) is inserted into a gap between the air inlet 204 of the housing and the air supply device 2 coupled to each other or a gap between the air inlet 204 of the housing and the air filter 30 coupled to each other, to prevent leakage of the filtered air.

In addition, according to the dispenser device 1 for spraying pharmaceutical powder according to another aspect of the present disclosure, a dispenser device for spraying pharmaceutical powder, including the elements of the above-described device, is provided.

In an embodiment of the present disclosure, the dispenser device for spraying pharmaceutical powder further includes a vibrator. The vibrator generates vibration to facilitate falling of the drug powder inside the drug container.

FIG. 11A, which illustrates a dispenser device for spraying pharmaceutical powder in which the first transfer tube and the control valve of the present disclosure have two separate channels, respectively, is a cross-section view of the control valve in an open state, and FIG. 11B is a view showing an orifice structure in which the inner diameter of the channel is narrowed in the direction of air flow in a second transfer tube inlet channel 202b as a modified form of the the second transfer tube.

FIG. 12 is a cross-sectional view of the control valve in a closed state.

As shown in FIG. 11A, in the dispenser device for spraying powder of the present disclosure, the first transfer tube 201 includes a first transfer tube upper channel 201b for transferring air flow upward, and a first transfer tube lower channel 201a for transferring air flow downward.

The first transfer tube upper channel 201b according to an embodiment of the present disclosure transfers the air introduced into the housing from the second transfer tube toward the control valve and the drug container. The air transferred toward the control valve and the drug container may be circulated again in the order of the control valve and the first transfer tube lower channel 201b, and accordingly, the drug may be discharged through the second transfer tube.

In an embodiment of the present disclosure, the second transfer tube 202 includes a second transfer tube inlet channel 202b for introducing air into the housing, and a second transfer tube discharge channel 202a for discharging air to the outside of the housing.

In an embodiment of the present disclosure: the first transfer tube 201 includes a first transfer tube upper channel 201b for transferring air flow upward, and a first transfer tube lower channel 201a for transferring air flow downward;

- the second transfer tube includes a second transfer tube inlet channel 202b for introducing air into the housing, and a second transfer tube discharge channel 202a for discharging air to the outside of the housing; and
- the second transfer tube inlet channel 202b communicates with the first transfer tube upper channel 201b, and the second transfer tube discharge channel 202a communicates with the first transfer tube lower channel 201a.

As in the dispenser device for spraying pharmaceutical powder according to an embodiment of the present disclosure, the air introduced into the second transfer tube inlet channel 202b is transferred toward the control valve and the drug container through the first transfer tube upper channel 201b. The transferred air is moved to the first transfer tube lower channel 201a through the control valve together with the drug in the container. The air transferred through the first transfer tube lower channel 201a is sprayed out of the device together with the drug through the second transfer tube discharge channel 202a.

In addition, as shown in FIG. 11B, in another embodiment of the present disclosure, the second transfer tube inlet channel 202b may have an orifice structure in which the inner diameter of the channel narrows in the air flow direction. As described above, when the inner diameter of the channel is narrowed in the direction of air flow, the flow rate can be increased even at the same inlet pressure.

In an embodiment of the present disclosure, the control valve includes a control valve upper channel 302 for transferring air flow upward, and a control valve lower channel 301 for transferring air flow downward.

In a specific embodiment of the present disclosure, in an open state, the control valve upper channel 302 communicates with the first transfer tube upper channel 201b, and the control valve lower channel 301 communicates with the first transfer tube lower channel 201a.

In another specific embodiment of the present disclosure, the inner diameter of the control valve lower channel 301 narrows toward a portion communicating with the first transfer tube lower channel 201a while the control valve is open.

In still another specific embodiment of the present disclosure, the control valve of the present disclosure is provided with an air closure prevention notch 303. The air closure prevention notch 303 communicates the first transfer tube upper channel 201b with the first transfer tube lower channel 201a due to the recessed structure thereof when the control valve is closed. The specific structure of the air closure prevention notch 303 is shown in FIGS. 12 and 13.

When the control valve is closed, the air introduced from the first transfer tube upper channel 201b is not transferred to the drug container. However, even when the control valve is closed, the air introduced from the first transfer tube upper channel 201b passes through the air closure prevention notch 303 and moves to the first transfer tube lower channel 201a to be discharged outside the device.

A circulation path in which air is directly connected in the order of the first transfer tube upper channel, the control valve, and the first transfer tube lower channel is referred to as an air idle pathway.

On the other hand, a circulation path in which air is connected in the order of the first transfer tube upper channel, the control valve, the drug container, the control valve, and the first transfer tube lower channel under the condition that the control valve is open is referred to as an air through pathway.

FIG. 13 illustrates a three-dimensional structure (A, C) and a cross section (B) of the control valve having two separate channels of FIG. 12 in a closed state. The air closure prevention notch 303 is configured to maintain a circulation path of air even when the control valve is switched from an open state to a closed state, and thus extends along the surface periphery of the control valve in the rotation direction. As a result, as shown in given reference A in FIG. 13, the air closure prevention notch 303 may be configured in a E-shape on the surface of the control valve.

The air closure prevention notch 303 is disconnected from the control valve upper channel 302, and the control valve lower channel 301 for transferring air flow downward.

- (i) coupling the air supply device 2 to the air inlet 204 of the dispenser device for spraying pharmaceutical powder;
- (ii) coupling the tube cap 400 and the conduit to the conduit mounting part 203;
- (iii) coupling a container containing pharmaceutical powder to the drug container adapter 100;
- (iv) turning on the powder of the air supply device 2; and
- (v) controlling the opening/closing state of the control valve and spraying the pharmaceutical powder.

In an embodiment of the present disclosure, the order of operations (i) to (iii) may be changed.

In another embodiment of the present disclosure, the tube cap has a lumen diameter at a distal portion greater than a lumen diameter at a proximal portion, based on the housing.

Since the method of using the dispenser device for spraying powder according to one aspect of the present disclosure relates to the method of using the dispenser device for spraying powder according to one aspect of the present disclosure including the above-described elements, the same description applies to the same elements between both disclosures. Therefore, to avoid the complexity of the present specification, the description of the same elements will be omitted without being provided again.

In the above, the present disclosure has been described in detail with reference to the drawings together with preferred embodiments, but the scope of the technical idea of the present disclosure is not limited to these drawings and embodiments. Therefore, various modified examples or embodiments of equivalent range may exist within the scope of the technical idea of the present disclosure. Accordingly, the scope of the technical idea according to the present disclosure should be interpreted by the claims, and the technical idea within the equivalent or equivalent range should be construed as belonging to the scope of the present disclosure.

DESCRIPTION OF SYMBOLS

1: Dispenser device for spraying pharmaceutical powder

2: Air supply device

10: Drug container

20: Conduit

30: Air filter

40: Adapter seal

41
a,
41
b,
42, 43: O-ring

100: Drug container adapter

200: Housing

201: First transfer tube

201
a: First transfer tube lower channel

201
b: First transfer tube upper channel

202: Second transfer tube

202
a: Second transfer tube discharge channel

202
b: Second transfer tube inlet channel

203: Conduit mounting part

204: Air inlet

205: Valve accommodating part

206: Fine protrusion

300: Control valve

301: Control valve lower channel

302: Control valve upper channel

303: Air closure prevention notch

310: Valve cap

400: Tube cap

500: Bottom cap

DISPENSER DEVICE FOR SPRAYING POWDER

Information

Publication Number

Date Filed

Date Published

Inventors

Original Assignees

CPC

International Classifications

Abstract

Description

Claims

Priority Claims (1)