Dispenser device for powder injection

Abstract

To provide a dispenser device capable of preventing a catheter from bending and spraying pharmaceutical powder without a fine spraying phenomenon of the powder.SOLUTION: A dispenser device 1 for spraying pharmaceutical powder includes: a drug container adapter 100 enabling a pharmaceutical powder container to be mounted thereto; a housing 200 including a first transfer tube communicating with the drug container adapter to allow the pharmaceutical powder delivered from the pharmaceutical powder container to pass therethrough, and a second transfer tube communicating with the first transfer tube to discharge the pharmaceutical powder together with air, the second transfer tube having both ends communicating with a conduit mounting part and an air inlet, respectively; and a control valve 300 located in the middle of the first transfer tube of the housing 200 to control the flow of the pharmaceutical powder.SELECTED DRAWING: Figure 1A

Description

[Technical field]

[0001] The present invention relates to a dispenser device for powder injection, and more particularly to an improved dispenser device for powder injection that prevents catheter breakage, prevents the phenomenon of fine powder injection, and removes powder flow during injection. [Background technology]

[0002] Gastrointestinal bleeding is a clinical disease that is frequently encountered in clinical practice, and more than 80% of gastrointestinal bleeding occurs in the upper gastrointestinal tract. Upper gastrointestinal bleeding is a disease in which bleeding occurs from lesions in the esophagus, stomach, and duodenum, resulting in vomiting of blood or bloody stools. More than 90% of upper gastrointestinal bleeding cases can be identified by endoscopic examination, and 40-50% of cases are said to be caused by bleeding from gastric ulcers or duodenal ulcers. Recently, many surgical procedures, such as polypectomy for the stomach and large intestine, mucosal resection for the treatment of early gastric cancer and colon cancer, and therapeutic endoscopic surgery, have been performed, but bleeding during or after such surgery may require emergency surgery or may even lead to death. To treat bleeding during surgery, gastrointestinal bleeding, and bleeding that occurs when collecting internal tissue for tissue examination, endoscopic hemostatic methods are used. In the endoscopic hemostatic method, an endoscopic conduit (catheter) is inserted into the body and brought close to the site of mucosal damage that requires hemostasis, and then a powdered hemostatic agent is administered and sprayed through the conduit to stop bleeding. For this purpose, various types of medicinal powder sprayers have been developed.

[0003] However, the powder sprayers developed to date have been observed to have a fine spray phenomenon in which powder is sprayed finely even when powder spray is not required, and have problems such as blocking the tip of the catheter tube, and in the process of attaching a thin catheter to the powder sprayer and operating it, the catheter breaks, causing incorrect powder spraying or damaging the catheter tube.In addition, there is a user requirement that the powder spray should be able to be stopped and restarted at the user's will during surgery, and therefore there is a need to develop an improved dispenser device for spraying medicinal powder. Summary of the Invention [Problem to be solved by the invention]

[0004] As described above, the present inventors have made extensive research and efforts to develop an improved dispenser device for spraying medicinal powder that solves the above problems, and as a result, have completed the present invention by introducing a rotary valve for opening and closing and a trumpet-shaped tube cap to completely control the flow of medicinal powder.

[0005] SUMMARY OF THE PRESENT EMBODIMENT It is therefore an object of the present invention to provide an improved dispenser device for spraying medicinal powder, comprising the above-mentioned features.

[0006] Another object of the present invention is to provide a method of using the dispenser device for spraying medicinal powder as described above. [Means for solving the problem]

[0007] According to one aspect, the present invention provides a dispenser device (1) for spraying medicinal powders, comprising: (a) a drug container adapter (100) onto which a pharmaceutical powder container can be attached; (b) a housing (200) including a first transfer tube (201) through which the pharmaceutical powder transferred from the pharmaceutical powder container can pass, and a second transfer tube (202) that communicates with the first transfer tube (201) so that the pharmaceutical powder can be discharged together with air, and whose both ends communicate with an air inlet (204) and a conduit mounting portion (203); and (c) a control valve (300) located in the first transfer tube of the housing to control the flow of pharmaceutical powder.

[0008] According to another aspect of the invention, there is provided a method of using a dispenser device for spraying medicinal powders, comprising the steps of: (i) coupling an air supply device 2 to the air inlet (204) of the dispenser device for spraying medicinal powder as described above; (ii) coupling a tube cap (400) and a conduit to the conduit mounting portion (203); (iii) coupling a container containing a pharmaceutical powder to the medication container adapter (100); (iv) turning on the power supply of the air supply device (2); and (v) spraying medicinal powder while adjusting the opening and closing state of the control valve; Effect of the Invention

[0009] The present invention provides a dispenser device for spraying medicinal powder, which includes the above-mentioned configuration, and can prevent the catheter from breaking and spray medicinal powder without causing the fine spray phenomenon of the powder. [Brief description of the drawings]

[0010] [Figure 1A] 1 is a perspective view of a dispenser device for spraying medicinal powder according to one embodiment of the present invention; [Figure 1B] 1 is an exploded view showing each component of a dispenser device for spraying medicinal powder according to one embodiment of the present invention; [Diagram 2] FIG. 2 is a cross-sectional view of a housing according to the embodiment of the present invention. [Diagram 3]FIG. 13 is a diagram showing a structure in which the diameters at both ends of a flow passage in a valve are made wider than the diameter in the middle of the flow passage in order to prevent the valve of the present invention from becoming inoperable. [Figure 4] 1 is a diagram showing a minute protrusion that protrudes to block a minute gap at the portion (valve rotating portion) where the control valve is connected to the housing in the medical powder injecting device of the present invention. FIG. [Diagram 5] 4 is an enlarged view of a portion where the valve and the fine protrusions of the valve receiving portion contact each other; FIG. [Figure 6] 1A and 1B are perspective and cross-sectional views illustrating a combination of a drug container adaptor, a drug container, and a housing according to the present invention. [Figure 7] FIG. 1 shows the shape of a tube cap that is commonly used to guide a conduit (20) to a conduit attachment portion. [Figure 8] FIG. 13 is a view showing a tube cap for guiding the conduit (20) to a conduit attachment portion to prevent bending of the conduit (20) of the present invention. [Figure 9] FIG. 13 is a view showing a bottom cap (500) having a groove formed on the bottom surface so that medicinal powder can gather at the portion where the first and second transfer tubes meet and communicate with each other according to the present invention. [Figure 10] FIG. 13 is a diagram showing an embodiment in which an air supply device is further combined with the dispenser device for spraying medical powder of the present invention. [Figure 11A] FIG. 2 is a cross-sectional view of a dispenser device for spraying medical powder according to the present invention, in which a first transfer pipe and a control valve are each branched into two channels, with the control valve in an open state. [Figure 11B] FIG. 2 is a diagram showing a modified embodiment of the second transfer tube of the present invention, which shows an orifice structure in which the inner diameter of the second transfer tube inlet channel 202b narrows in the air travel direction. [Figure 12] FIG. 2 is a cross-sectional view of a dispenser device for spraying medical powder according to the present invention, in which a first transfer pipe and a control valve are each branched into two channels, with the control valve in a closed state. [Figure 13]13 is a diagram showing the three-dimensional structure and cross section of the control valve branching into two channels in FIG. 12 in a closed state. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. However, these examples are merely for the purpose of explaining the present invention in more detail, and the present invention can be embodied in various forms. It is obvious to a person skilled in the art that the scope of the present invention is not limited to these examples according to the gist of the present invention, and the present invention is defined only by the scope of the attached claims.

[0012] In addition, the terms used in the present invention are merely for describing specific embodiments and are not intended to limit the present invention. A singular expression includes a plural expression unless otherwise specified in the context. In the entire specification of the present invention, when a certain component is "included", it does not mean that other components are excluded, but that other components may be further included, unless otherwise specified.

[0013] In the present specification, the term "medicinal powder spray dispenser" refers to a sprayer having an air supply device that is connected to the dispenser for spraying medicinal powder. However, the term "powder spray dispenser" as used herein means a part or the whole of a device used for spraying powder. Therefore, the powder spray dispenser of the present invention may mean either a part of a powder sprayer or the whole finished product including the part, and may mean not only the form of the powder spray dispenser presented in one embodiment of the present specification as a part, but also the whole finished product including the part, as long as the article has the configuration described with reference to the claims and drawings in the present specification.

[0014] The "dispenser device for powder injection" may also be expressed as a "powder injector," "powder injection device," "powder spray," "powder spray device," etc., but any device that can be used to apply powder for medicinal purposes to the human body may be interpreted as the "dispenser device for powder injection." According to one aspect of the present invention, there is provided a dispenser device for spraying medicinal powders.

[0015] The term "medicinal powder" as used herein means a powdered drug that is clinically used, and may be used in expressions such as "medical powder," "medical powder," "powdered drug," etc. Examples of the medicinal powder include various products such as hemostatic agents, adhesion inhibitors, wound dressing materials, and medical adhesives, but are not limited thereto, and it will be readily understood by those skilled in the art that the term may include various medicinal powders.

[0016] FIG. 1A is a perspective view of a powder spray dispenser of the present invention.

[0017] FIG. 1B is an exploded view showing the components of a dispenser device for spraying medicinal powder according to one embodiment of the present invention.

[0018] FIG. 2 is a cross-sectional view of a housing according to an embodiment of the present invention. 1B and 2, a dispenser device for spraying medicinal powder according to an embodiment of the present invention comprises (a) a drug container adapter 100 to which a medicinal powder container can be attached; (b) a housing 200; and (c) a control valve 300 for controlling the flow of medicinal powder.

[0019] More specifically, the housing includes a first conveying tube 201 which communicates to allow the pharmaceutical powder transferred from the pharmaceutical powder container to pass through, and a second conveying tube 202 which communicates with the first conveying tube 201 to allow the pharmaceutical powder to be discharged together with air, and whose both ends communicate with an air inlet 204 and a conduit mounting portion 203.

[0020] In addition, the control valve 300 is located midway through the first transfer pipe 201 of the housing. As shown in FIG. 2, in the device of the present invention, the first transfer pipe 201 of the housing may be in communication in the vertical direction, but is not limited to this.

[0021] In one embodiment of the present invention, the valve is matingly coupled to the housing.

[0022] In one embodiment of the present invention, a packing (e.g., an O-ring) is inserted at the joint between the valve and the housing to prevent leakage of air or pharmaceutical powder. In a specific embodiment of the present invention, the packing is inserted on both sides of the flow path where the valve and the first delivery tube communicate with each other.

[0023] In one embodiment of the present invention, the valve is formed with a hook for snap-fit ​​connection with the housing, and the housing has a latch protrusion on which the hook can be hooked and fixed.

[0024] In an embodiment of the present invention, the dispenser device for spraying medicinal powder may further include a valve cap 310 for covering a portion where the hook of the valve and the latching protrusion structure of the housing are coupled.

[0025] In an embodiment of the present invention, the valve may be a ball valve or a butterfly valve having a flow passage therein.

[0026] In one embodiment of the present invention, the valve controls the flow of pharmaceutical powder and opens / closes by rotating the valve within an angle of 90°. FIG. 3 is a diagram showing a structure in which the diameters at both ends of a flow passage within a valve are made wider than the diameter in the middle of the flow passage in order to prevent the valve of the present invention from becoming inoperable.

[0027] 3, in a specific embodiment of the present invention, when the valve of the present invention is opened, the inner diameter of the flow passage in the valve narrows in the direction in which the pharmaceutical powder passes and then widens again. Therefore, the cross section of the flow passage of the valve has a shape like a venturi tube or an axial cross section of an hourglass.

[0028] The above-mentioned structure can prevent the valve from being obstructed by internal friction caused by medicinal powder getting caught between the valve and the housing when the valve is opened or closed.

[0029] In another embodiment of the present invention, the inner diameter of the valve of the present invention may be maintained constant.

[0030] In yet another embodiment of the present invention, the inner diameter of the valve of the present invention may be narrowed in the direction in which the pharmaceutical powder passes and then maintained constant.

[0031] In a specific embodiment of the present invention, the inner diameters of both ends of the flow passage of the valve are equal to or close to (±10%) the inner diameter of the first transfer pipe, but are not limited thereto.

[0032] When the valve is open, the pharmaceutical powder passes through the first transfer pipe and reaches the portion connected to the second transfer pipe, and when the valve is closed, the passage of the pharmaceutical powder can be completely blocked, thereby preventing fine spraying of the pharmaceutical powder. FIG. 4 is a diagram showing a minute protrusion that protrudes to close a minute gap at a portion (valve rotating portion) where a control valve is joined to a housing in the device for injecting medical powder of the present invention. FIG. 5 is an enlarged view of a portion where the valve and the fine protrusion of the valve housing part come into contact with each other.

[0033] 4 and 5, in one embodiment of the present invention, a fine protrusion 206 may be formed at a portion (valve receiving portion 205) where the valve rotates in the housing to open and close the valve.

[0034] The fine protrusions 206 block the fine gap between the valve and the valve receiving portion 205 while maintaining the operability of the valve, thereby blocking the fine flow (leakage) of medical powder through the gap.

[0035] In one embodiment of the present invention, a 0.05 mm circular micro-protrusion was applied to the location where the housing and valve were assembled, preventing powder from leaking through the gap between the housing and valve while maintaining operability. FIG. 6 is a perspective view and a cross-sectional view illustrating a combination of the drug container adaptor, the drug container, and the housing of the present invention.

[0036] 6, in one embodiment of the present invention, the drug container may be vertically coupled to the drug container adaptor. When the drug container is vertically coupled to the drug container adaptor or housing as described above, the medicinal powder in the drug container may be more efficiently transferred to the housing side by gravity.

[0037] In one embodiment of the present invention, the drug container adapter may be snap-fit ​​or screw-connected to the housing, and a sealing packing (i.e., adapter seal 40) is inserted between the drug container adapter and the housing.

[0038] In one embodiment of the present invention, the pharmaceutical powder container may be threadably coupled to the drug container adapter, but is not limited thereto.

[0039] In one embodiment of the present invention, a drug container adapter having the structure shown in Figure 6 is attached to a housing together with an adapter seal 40, and a drug container containing medical powder is attached. After that, the airtightness is tested and it is confirmed that the pressure loss is maintained at 0.005 psi or less for 5 seconds. Therefore, the NBM internal technical selection items are met. FIG. 7 shows the shape of a tube cap that is commonly used to guide the conduit 20 to a conduit attachment portion. FIG. 8 is a diagram showing a tube cap for guiding the conduit 20 to a conduit attachment portion to prevent bending of the conduit 20 according to the present invention.

[0040] 7 and 8, in an embodiment of the present invention, the powder injecting device further includes a tube cap 400 coupled to the second delivery pipe in a parallel direction.

[0041] The tube cap 400 is coupled to a conduit mounting portion of the housing, and is characterized in that the inner diameter of the tube at a distal portion based on the housing is larger than the inner diameter of the tube at a proximal portion.

[0042] The tube cap 400 may be called a trumpet tube cap since the inner diameter of the distal portion is larger than that of the proximal portion based on the housing and has a trumpet-like shape. The tube cap guides the conduit 20 to be attached to the conduit attachment portion, while preventing bending and deformation of the conduit 20 because the diameter of the distal portion is wider than that of the proximal portion, and provides a free range of movement.

[0043] In an embodiment of the present invention, the tube cap 400 communicates with the inside thereof so that the conduit 20 can pass therethrough, and guides the conduit to the conduit mounting portion 203 .

[0044] In addition, the tube cap 400 is connected to the conduit mounting part of the housing, and the conduit mounting part and the tube gap are tightly attached to each other. When the conduit is pushed into the conduit mounting part through the tube cap, the elasticity of the conduit increases the inner diameter of the end of the conduit, and the tube cap and the conduit mounting part are tightly attached to each other. As a result, the tube cap 400 can not only prevent the conduit from slipping out of the conduit mounting part, but also maintain airtightness to prevent air from leaking out. FIG. 9 is a diagram showing the shape of a bottom cap 500 having a groove formed on the bottom surface thereof so that medicinal powder can be collected at the portion where the first and second delivery tubes meet and communicate with each other according to the present invention.

[0045] 9, in one embodiment of the present invention, a bottom cap 500 having a groove formed on a bottom surface in the air flow direction is coupled to a portion where the first and second transport pipes communicate with each other. The groove may be U-shaped or V-shaped.

[0046] In another embodiment of the present invention, a bottom cap 500 may be provided at a portion where the first and second delivery tubes of the present invention meet and communicate with each other. The bottom cap 500 closes the lower surface of the first delivery tube, and allows the medical powder falling along the first delivery tube to move along the air flow direction of the second delivery tube and be sprayed. The shape of the bottom cap 500 may have a flat bottom, a round bottom, etc., in addition to the above-mentioned U-shaped, V-shaped, or other shaped grooves, but is not limited thereto.

[0047] In one embodiment of the present invention, a packing (eg, an O-ring) is inserted at the joint between the bottom cap 500 and the housing to prevent leakage of air or powder.

[0048] As shown in Figure 9, the inner diameter of the first delivery pipe becomes wider as it approaches the second delivery pipe. In this way, when the inner diameter of the first delivery pipe becomes wider as it approaches the second delivery pipe, it is possible to minimize the phenomenon that the medicinal powder adheres to the sidewall of the first delivery pipe and is wasted. FIG. 10 is a diagram showing an embodiment in which an air supply device is further combined with the dispenser device for spraying medical powder of the present invention.

[0049] As shown in FIG. 10, the powder spray dispenser device of the present invention may further include or be coupled to an air supply device 2 coupled to an air inlet 204 of the housing.

[0050] In addition, in one embodiment of the present invention, the device may further include an air filter 30 between the air inlet 204 and the air supply device 2 .

[0051] In one embodiment of the present invention, 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 connected by threading or snap-fit ​​connection, but is not limited thereto.

[0052] In one embodiment of the present invention, a packing (e.g., an O-ring) is inserted at the connection between the air inlet 204 of the housing and the air supply device 2, or at the connection between the air inlet 204 of the housing and the air filter 30, to prevent leakage of filtered air. According to another aspect of the present invention, there is provided a dispenser device 1 for spraying medicinal powder, which includes the configuration of the device described above.

[0053] In an embodiment of the present invention, the dispenser device for spraying medicinal powder further includes a vibrator that generates vibrations to make the medicinal powder in the medicinal container more likely to fall. Figure 11A shows a dispenser device for spraying medical powder in which the first transfer tube and control valve of the present invention are each branched into two channels, showing a cross-section with the control valve in an open state, and Figure 11B shows a modified form of the second transfer tube, showing an orifice structure in which the inner diameter of the channel narrows in the direction of air travel in the second transfer tube inlet channel 202b.

[0054] FIG. 12 shows the cross section with the control valve in a closed state.

[0055] As shown in FIG. 11A, in the dispenser device for powder injection of the present invention, the first delivery pipe 201 includes a first delivery pipe upper channel 201b for transmitting air flow upward, and a first delivery pipe lower channel 201a for transmitting air flow downward.

[0056] According to an embodiment of the present invention, the upper channel 201b of the first delivery tube sends the air flowing into the housing from the second delivery tube toward the control valve and the drug container. The air transferred toward the control valve and the drug container is further circulated through the control valve and the lower channel 201b of the first delivery tube, so that the drug is discharged from the second delivery tube.

[0057] In one embodiment of the present invention, the second delivery tube 202 includes a second delivery tube inlet channel 202b for drawing air into the housing, and a second delivery tube outlet channel 202a for discharging air to the outside of the housing. In one embodiment of the present invention, the first delivery pipe 201 includes a first delivery pipe upper channel 201b for transmitting an air flow upward and a first delivery pipe lower channel 201a for transmitting an air flow downward; and The second transfer tube includes a second transfer tube inlet channel 202b for drawing air into the housing and a second transfer tube outlet channel 202a for discharging air to the outside of the housing; At this time, the second transfer pipe inlet channel 202b communicates with the first transfer pipe upper channel 201b, and the second transfer pipe outlet channel 202a communicates with the first transfer pipe lower channel 201a.

[0058] As in the dispenser device for spraying medicinal powder according to one embodiment of the present invention, air flowing in from the second delivery tube inlet channel 202b is transported through the first delivery tube upper channel 201b toward the control valve and the drug container. The transported air moves to the first delivery tube lower channel 201a through the control valve together with the drug in the container. The air transported to the first delivery tube lower channel 201a is sprayed out of the device together with the drug through the second delivery tube outlet channel 202a.

[0059] 11B, in another embodiment of the present invention, the second transfer pipe 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 narrows in the air flow direction, it is possible to increase the flow rate even with the same inlet pressure.

[0060] In one embodiment of the present invention, the control valve includes a control valve upper channel 302 for transmitting air flow upward and a control valve lower channel 301 for transmitting air flow downward.

[0061] In a specific embodiment of the present invention, when the control valve is in an open state, the control valve upper channel 302 communicates with the first transfer line upper channel 201b, and the control valve lower channel 301 communicates with the first transfer line lower channel 201a.

[0062] In another embodiment of the present invention, the inner diameter of the control valve lower channel 301 becomes narrower as it approaches the communicating portion with the first transfer pipe lower channel 201a when the control valve is open.

[0063] In yet another embodiment of the present invention, the control valve of the present invention includes an air blockage prevention notch 303. The air blockage prevention notch 303 has a recessed structure, which allows the first transfer pipe upper channel 201b to communicate with the first transfer pipe lower channel 201a when the control valve is closed. A specific structure of the air blockage prevention notch 303 is shown in Figures 12 and 13.

[0064] When the control valve is closed, air flowing in from the first delivery tube upper channel 201b is not transported to the drug container. However, even when the control valve is closed, air flowing in from the first delivery tube upper channel 201b moves to the first delivery tube lower channel 201a via the air blockage prevention notch 303 and is discharged outside the device.

[0065] The circulation pathway in which the air is directly connected from the upper channel of the first transfer pipe to the control valve and then to the lower channel of the first transfer pipe is called an air idle pathway.

[0066] Meanwhile, when the control valve is open, the circulation path in which air is connected in the order of the upper channel of the first delivery pipe--the control valve--the drug container--the control valve--the lower channel of the first delivery pipe is called the air through pathway.

[0067] Figure 13 shows the three-dimensional structure (A, C) and cross section (B) of the control valve branched into two channels in Figure 12 when it is closed. The air blockage prevention notch 303 is connected along the surface periphery of the control valve according to the rotation direction, since it is configured to maintain the air circulation path even when the control valve is switched from the open state to the closed state. As a result, as shown in Figure 13A, the air blockage prevention notch 303 may be configured in a 'C' shape on the surface of the control valve.

[0068] The air blockage prevention notch 303 is characterized in that it is disconnected from the control valve upper channel 302 and the control valve lower channel 301 that transmits the air flow downward. According to another aspect of the invention, there is provided a method of using a dispenser device for spraying medicinal powders, comprising the steps 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 portion 203; (iii) coupling a container containing a pharmaceutical powder to the drug container adapter 100; (iv) turning on the power supply of the air supply device 2; and (v) spraying medicinal powder while adjusting the opening and closing state of the control valve; In an embodiment of the present invention, the order of steps (i) to (iii) may be changed.

[0069] In another embodiment of the present invention, the tube gap is such that the inner diameter of the tube at the distal portion is larger than the inner diameter of the tube at the proximal portion based on the housing. The method of using the powder spray dispenser device according to one aspect of the present invention relates to a method of using the powder spray dispenser device according to one aspect of the present invention including the above-mentioned configuration, and therefore the same description is applied to the configuration common to both inventions. Therefore, in order to avoid complexity of this specification, duplicate descriptions of the common configuration are omitted. Although the present invention has been described in detail above with reference to the drawings and preferred embodiments, the scope of the technical idea of ​​the present invention is not limited to these drawings and embodiments. Therefore, various modifications or equivalent embodiments are possible within the scope of the technical idea of ​​the present invention. Therefore, the scope of the technical idea of ​​the present invention should be interpreted according to the claims, and any technical idea equivalent to or within the equivalent scope should be interpreted as belonging to the scope of the present invention. [Explanation of symbols]

[0070] 1: Dispenser device for spraying pharmaceutical powder 2: Air supply device 10: Drug container 20: Conduit 30: Air filter 40: Adapter seal 41a, 41b, 42, 43: O-ring 100: Drug container adapter 200: Housing 201: 1st transfer pipe 201a: First transfer pipe lower channel 201b: First transfer pipe upper channel 202:Second transfer pipe 202a: Second transfer pipe discharge channel 202b: Second transfer pipe inlet channel 203: Conduit attachment part 204: Air inlet 205: Valve housing 206: Fine protrusions 300: Control valve 301: Control valve lower channel 302: Control valve upper channel 303: Air blockage prevention notch 310: Valve cap 400: Tube cap 500:Bottom cap

Claims

1. (a) a drug container adapter (100) to which a pharmaceutical powder container can be attached; (b) a housing (200) including a first transfer tube (201) vertically communicating with the drug container adapter (100) so that the pharmaceutical powder transferred from the pharmaceutical powder container can pass downward, and a second transfer tube (202) intersecting the first transfer tube (201) and communicating with the first transfer tube (201) so that the pharmaceutical powder can be discharged together with air, both ends of which communicate with an air inlet (204) and a conduit mounting portion (203), respectively; (c) a control valve (300) located between the drug container adapter (100) and the first transfer tube (201) to control the flow of pharmaceutical powder; The first transport pipe (201) includes a first transport pipe upper channel (201b) for transmitting an air flow upward and a first transport pipe lower channel (201a) for transmitting an air flow downward; The second transfer tube includes a second transfer tube inlet channel (202b) for drawing air into the housing (200) and a second transfer tube outlet channel (202a) for exhausting air to the outside of the housing (200); Here, the second transfer tube inlet channel (202b) communicates with the first transfer tube upper channel (201b) and the air inlet (204), and the second transfer tube outlet channel (202a) communicates with the first transfer tube lower channel (201a) and the conduit mounting portion (203); The control valve (300) is a ball valve or a butterfly valve having a flow passage therein. The control valve (300) comprises a control valve upper channel (302) for conveying an air flow upward and a control valve lower channel (301) for conveying an air flow downward; the control valve upper channel (302) and the control valve lower channel (301) communicate with the first transfer line upper channel (201b) and the first transfer line lower channel (201a), respectively; A dispenser device (1) for spraying medicinal powder, wherein the control valve (300) is located above the intersection of the first transfer pipe (201) and the second transfer pipe (202) such that when the control valve (300) is in a closed state, air flowing in through the air inlet (204) is prevented from flowing beyond the upper section of the control valve (300).

2. The dispenser device (1) for spraying pharmaceutical powder as described in claim 1, wherein when the control valve (300) is open, the inner diameter of the flow path within the control valve (300) i) is constant, ii) becomes narrower in the direction in which the pharmaceutical powder passes and then widens again, or iii) becomes narrower in the direction in which the pharmaceutical powder passes and then remains constant.

3. 2. The dispenser device (1) for spraying medicinal powders as claimed in claim 1, wherein a valve receiving portion (205) in which the valve rotates within the housing (200) to open and close the valve is formed with fine protrusions (206).

4. The dispenser device (1) for spraying medicinal powder as described in claim 1, further comprising a tube cap (400) connected to the conduit mounting portion (203) and having a tube inner diameter at a distal portion larger than a tube inner diameter at a proximal portion relative to the housing (200).

5. 2. The dispenser device (1) for spraying medicinal powder according to claim 1, wherein a bottom cap (500) is coupled to a portion where the first transport pipe (201) and the second transport pipe (202) communicate with each other.

6. 2. The dispenser device (1) for spraying medicinal powders according to claim 1, wherein the inner diameter of the first delivery tube (201) becomes wider as it approaches the second delivery tube (202).

7. The dispenser device (1) for spraying medicinal powders according to claim 1, further comprising an air supply device (2) coupled to the air inlet (204) of the housing (200).

8. 2. The dispenser device (1) for spraying medicinal powder as claimed in claim 1, wherein the control valve (300) is provided with an air blockage prevention notch (303) recessed along the surface periphery of the control valve (300) according to the direction of rotation of the control valve (300) so as to maintain an air circulation path when the control valve (300) is switched from an open state to a closed state.

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