Rhinitis catheter and method for manufacturing rhinitis catheter

Abstract

This rhinitis catheter comprises: a main body for providing a refrigerant container for accommodating a refrigerant, and a mounting space in which the refrigerant container can be accommodated; a valve assembly for selectively discharging the refrigerant from the refrigerant container; a switch unit capable of controlling the operation of the valve assembly; and a sheath unit for guiding, to the nasal cavity, the refrigerant discharged from the refrigerant container. The valve assembly includes: a valve block which is disposed in the mounting space so as to enable communication with the refrigerant container, and which provides a block channel for guiding the discharge of the refrigerant; a fixing ring coupled to the block channel; a supporter which is coupled to the fixing ring and which has a supporter flow path formed therein; and an opening / closing member which is disposed in the supporter flow path so as to be liftable / lowerable, and which can selectively block the block channel by means of the operation of the switch unit.

Description

Rhinitis catheter and method for manufacturing rhinitis catheter

[0001] The present invention relates to a nasal catheter and a method for manufacturing a nasal catheter.

[0002] In general, allergic chronic rhinitis is a type 1 hypersensitivity disease that occurs in the nasal mucosa, with the main symptoms being sneezing, watery nasal discharge, itching, and nasal congestion.

[0003] Allergic chronic rhinitis can be caused by genetic, environmental, and local factors. Typical symptoms include nasal congestion, sneezing, watery nasal discharge, and itchy nose and eyes. Other symptoms include photophobia, lacrimation, headaches, and itchy throat.

[0004] Nasal mucosal findings in patients with allergic rhinitis are characterized by hypertrophy of the inferior turbinate mucosa and accumulation of watery or mucopurulent secretions. The number of patients seeking immunotherapy or surgery to treat allergic rhinitis is increasing. However, these treatments are time-consuming, involve discomfort such as bleeding and packing, and are not particularly effective.

[0005] Recently, cryotherapy has been proposed, applying frozen gas to the origin of the posterior nasal nerve. Cryotherapy requires minimal local anesthesia, lasts 30 seconds to 1 minute, and offers the advantages of eliminating bleeding, hospitalization, and packing. However, the high cost of cryotherapy and the difficulty in handling and using cryotherapy equipment have hindered its widespread adoption.

[0006] (Prior art literature)

[0007] (Patent Document 1) Publication No. 10-2010-0110790 (published on October 13, 2010)

[0008] Embodiments of the present invention aim to provide a nasal catheter and a method for manufacturing a nasal catheter that can improve the handling and usability of the device.

[0009] According to one aspect of the present invention, a nasal catheter comprises: a refrigerant container for accommodating refrigerant; a body providing a mounting space capable of accommodating the refrigerant container; a valve assembly for selectively discharging the refrigerant from the refrigerant container; a switch unit capable of controlling the operation of the valve assembly; and a system unit for guiding the refrigerant discharged from the refrigerant container to the nasal cavity, wherein the valve assembly is disposed in the mounting space so as to be in communication with the refrigerant container, and includes a valve block providing a block channel for guiding the discharge of the refrigerant; a fixing ring coupled to the block channel; a supporter coupled to the fixing ring and having a supporter channel formed therein; and an opening / closing member disposed so as to be movable in the supporter channel and capable of selectively blocking the block channel by the operation of the switch unit.

[0010] In addition, the block channel may include a container passage into which the outlet of the refrigerant container can be inserted; a fixed passage into which the fixed ring is coupled; and an opening / closing passage connecting the container passage and the fixed passage and having an inner diameter smaller than the inner diameter of the container passage and the inner diameter of the fixed passage.

[0011] In addition, a block screw thread may be formed on the inner surface of the block channel, and a ring screw thread may be formed on the outer surface of the fixed ring to which the block screw thread is rotatably coupled.

[0012] In addition, the valve block may be formed with a container insertion groove that provides the container flow path, a valve mounting groove that provides the fixed flow path and in which the valve assembly is placed, an opening / closing groove that provides the opening / closing flow path, and a refrigerant discharge groove that provides communication between the valve mounting groove and the system unit so that the refrigerant is guided to the system unit.

[0013] In addition, the opening / closing member may include an elevation shaft disposed to penetrate the supporter passage; a support cap coupled to the lower end of the elevation shaft and moving the elevation shaft upward when pressurized by the switch unit; and an opening / closing piece coupled to the upper end of the elevation shaft and having an outer diameter larger than the inner diameter of the opening / closing passage so as to block the opening / closing passage when the elevation shaft moves upward.

[0014] In addition, the switch unit may include a button that is installed in the main body so as to be retractable; a switch rod that is rotatably hinged to the main body so as to support the button at one end; and a switch piece that is connected to the other end of the switch rod so as to pressurize the lower end of the opening / closing member when the button is pushed.

[0015] In addition, the system unit may include a spray gun for spraying the refrigerant into the nasal cavity; a connector disposed on the main body so that the spray gun is rotatably connected; a rotating cap for rotating the spray gun; and a guide tube connecting between the connector and the block channel.

[0016] In addition, the spray gun may include a spray pipe section that provides a spray path through which the refrigerant can flow; and a spray section that is connected to an end of the spray pipe section and has a plurality of spray holes formed on one surface so that the refrigerant is sprayed in one direction.

[0017] In addition, the main body may include a body part having the mounting space formed inside and an insertion hole formed on the upper side into which the refrigerant container can be inserted; and a plug part that is rotatably coupled to the insertion hole so that the mounting space is separated from the external space.

[0018] According to another aspect of the present invention, a method for manufacturing a nasal catheter includes a step of manufacturing a component for preparing a refrigerant container for accommodating a refrigerant, a main body providing a mounting space capable of accommodating the refrigerant container, a valve assembly for selectively discharging the refrigerant from the refrigerant container, a switch unit capable of controlling the operation of the valve assembly, and a sheath unit for guiding the refrigerant discharged from the refrigerant container into the nasal cavity; and a step of assembling the component for assembling the main body, the valve assembly, the switch unit, and the sheath unit, wherein the step of manufacturing the component includes a step of injection-molding a valve block in which a container insertion groove, a valve mounting groove, an opening / closing groove, and a refrigerant discharge groove are formed; a step of machining a block screw thread in the valve mounting groove of the valve block; a step of rotatably connecting a ring screw thread of a fixing ring to the block screw thread of the valve block; and a step of manufacturing a valve assembly by connecting a supporter, in which an opening / closing member is assembled so as to be able to move up / down, to the fixing ring.

[0019] Embodiments of the present invention can achieve stability of cooling temperature through quality uniformity of a nasal catheter, and improve the safety of medical staff and patients.

[0020] In addition, embodiments of the present invention can block the possibility of refrigerant leakage by manufacturing an integrated valve case through insert injection.

[0021] FIG. 1 is a perspective view illustrating a combined nasal catheter according to one embodiment of the present invention.

[0022] Figure 2 is an exploded perspective view of Figure 1.

[0023] FIG. 3 is a partial cross-sectional perspective view illustrating the main components of a nasal catheter according to one embodiment of the present invention.

[0024] Figure 4 is an exploded perspective view showing the valve assembly of Figure 3 in disassembly.

[0025] Figure 5 is a state diagram showing the operating state of the valve assembly of Figure 3 when the discharge port of the refrigerant container is blocked.

[0026] Figure 6 is a state diagram showing the operating state of the valve assembly of Figure 3 when the discharge port of the refrigerant container is opened.

[0027] FIG. 7 is a state diagram illustrating a valve block of a valve assembly in a method for manufacturing a nasal catheter according to one embodiment of the present invention.

[0028] Fig. 8 is a state diagram showing a state in which a block screw thread is formed in the valve block of the valve assembly of Fig. 7.

[0029] Fig. 9 is a state diagram showing a state in which a fixing ring is attached to the block screw of the valve block of Fig. 8.

[0030] Fig. 10 is a state diagram showing a state in which a supporter is attached to the fixed ring of Fig. 8.

[0031] Hereinafter, specific embodiments for implementing the idea of ​​the present invention will be described in detail with reference to the drawings.

[0032] In addition, when explaining the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description is omitted.

[0033] Additionally, when it is said that a component is 'connected', 'supported', 'connected', 'supplied', 'transmitted' or 'in contact with' another component, it should be understood that it may be directly connected, supported, connected, supplied, transmitted or in contact with that other component, but there may also be other components present in between.

[0034] The terminology used herein is intended solely to describe specific embodiments and is not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

[0035] Additionally, please note that the terms "upper side," "lower side," and "side" in this specification are based on the illustrations in the drawings and may be expressed differently if the orientation of the subject changes. For the same reason, some components in the attached drawings are exaggerated, omitted, or schematically depicted, and the sizes of each component do not fully reflect the actual size.

[0036] Additionally, terms that include ordinal numbers, such as "first," "second," etc., may be used to describe various components, but these components are not limited by such terms. These terms are used solely to distinguish one component from another.

[0037] The term "comprising" as used in the specification means specifying a particular characteristic, region, integer, step, operation, element and / or component, but does not exclude the presence or addition of other particular characteristics, regions, integers, steps, operations, elements, components and / or groups.

[0038] Hereinafter, a specific configuration of a nasal catheter and a method for manufacturing a nasal catheter according to one embodiment of the present invention will be described.

[0039] Referring to FIGS. 1 to 6, a nasal catheter (10) according to one embodiment of the present invention can perform cryotherapy on a rhinitis patient by supplying refrigerant contained in a refrigerant container (500) to the nasal cavity. This nasal catheter (10) may include a main body (100), a valve assembly (200), a switch unit (300), and a system unit (400).

[0040] The main body (100) can support the main components of the nasal catheter (10), such as the valve assembly (200), the switch unit (300), and the system unit (400). The main body (100) can provide a mounting space capable of accommodating a refrigerant container (500) to accommodate the refrigerant container (500). The main body (100) can include a body portion (110) and a plug portion (120).

[0041] The body part (110) may be provided in a gun shape that can be easily gripped by a user. An installation space may be formed on the inside of the body part (110) into which a refrigerant container (500), a valve assembly (200), and a switch unit (300) may be assembled. An insertion hole (111) into which a refrigerant container (500) may be inserted may be formed on the upper portion of the body part (110). A system unit (400) may be assembled on one end of the body part (110).

[0042] The plug (120) can be rotatably coupled to the insertion hole (111) while the refrigerant container (500) is accommodated in the mounting space of the body (110). The plug (120) can be rotatably coupled to the insertion hole (111) of the body (110), thereby separating the mounting space from the external space. When the plug (120) is rotatably coupled to the body (110), the plug (120) can move downward of the body (110), and by the downward movement of the plug (120), the refrigerant container (500) can be brought into close contact with the container flow path (211-1) of the valve assembly (200).

[0043] The valve assembly (200) can selectively discharge refrigerant from the refrigerant container (500) by the operation of the switch unit (300). The valve assembly (200) can be placed in the installation space of the main body (100). The valve assembly (200) can be positioned directly below the refrigerant container (500). When the refrigerant container (500) is accommodated in the main body (100), the discharge port of the refrigerant container (500) can be inserted into the valve assembly (200). The valve assembly (200) can include a valve block (210), a fixing ring (220), a supporter (230), and an opening / closing member (240).

[0044] The valve block (210) can guide the refrigerant to the system unit (400) when the refrigerant is discharged from the refrigerant container (500). The valve block (210) can be placed in the installation space so as to be in communication with the refrigerant container (500). An opening member for creating a hole in the refrigerant container (500) can be placed in the valve block (210). The opening member can be made of a high-strength metal.

[0045] The valve block (210) can be manufactured by insert injection. The valve block (210) can be provided with a block channel (211) that guides the refrigerant discharged from the refrigerant container (500) to the system unit (400). A block screw thread (211-11) can be formed on the inner surface of the block channel (211). After the valve block (210) is insert injected, the block screw thread (211-11) can be processed into the block channel (211) of the valve block (210). When the fixed ring (220) is coupled to the block screw thread (211-11), the ring screw thread (220-11) of the fixed ring (220) can be rotatably coupled to the block screw thread (211-11).

[0046] A container insertion groove (210-1), a valve mounting groove (210-2), an opening / closing groove (210-3), and a refrigerant discharge groove (210-4) may be formed in the valve block (210). A container flow path (211-1) may be formed in the container insertion groove (210-1). When the refrigerant container (500) is accommodated in the main body (100), the discharge port of the refrigerant container (500) may be inserted into the container flow path (211-1). That is, the refrigerant container (500) filled with refrigerant may be accommodated in the main body (100) such that the discharge port is opened approximately in the direction of gravity, that is, opened toward the bottom of the main body (100). A fixed flow path (211-2) may be formed in the valve mounting groove (210-2). A fixed ring (220) may be coupled to the fixed flow path (211-2). An opening / closing flow path (211-3) may be formed in the opening / closing groove (210-3). The opening / closing flow path (211-3) may connect the container flow path (211-1) and the fixed flow path (211-2). The inner diameter of the opening / closing flow path (211-3) may be smaller than the inner diameter of the container flow path (211-1) and the inner diameter of the fixed flow path. The refrigerant discharge groove (210-4) may communicate between the valve mounting groove (210-2) and the system unit (400). The refrigerant discharge groove (210-4) may guide the refrigerant discharged from the refrigerant container (500) to the system unit (400). These container insertion grooves (210-1), valve mounting grooves (210-2), opening / closing grooves (210-3), and refrigerant discharge grooves (210-4) can be separated from the mounting space so as to be sealed when the valve assembly (200) is coupled to the main body (100). On the inner surface of the main body (100), grooves corresponding to the container insertion grooves (210-1), valve mounting grooves (210-2), opening / closing grooves (210-3), and refrigerant discharge grooves (210-4) of the valve block (210) can be formed.

[0047] The fixing ring (220) may be a fixing member for fixing the supporter (230) to the valve block (210). The fixing ring (220) may be provided in a ring shape that can be placed in the fixing passage (211-2) of the valve block (210). The fixing ring (220) may have an outer diameter corresponding to the inner diameter of the fixing passage (211-2) of the valve block (210). A ring screw thread (220-11) may be formed on the outer diameter surface of the fixing ring (220) to allow the block screw thread (211-11) of the valve block (210) to be rotatably coupled. A screw thread that can be rotatably coupled with at least a portion of the supporter (230) may be formed on the inner diameter surface of the fixing ring (220).

[0048] The supporter (230) may be coupled to the fixing ring (220). In the present embodiment, the supporter (230) may be rotatably coupled to the fixing ring (220) via a screw thread. A supporter path (not shown) may be formed inside the supporter (230). The supporter path may provide a movement path along which the opening / closing member (240) may move. The supporter path may provide an inner diameter that is at least larger than the outer diameter of the lifting shaft (241) of the opening / closing member (240).

[0049] The opening / closing member (240) can selectively block the block channel (211) by the operation of the switch unit (300). The opening / closing member (240) can be supported so as to be movable by the supporter (230). The opening / closing member (240) can be movably arranged in the supporter path of the supporter (230). The opening / closing member (240) can include an elevating shaft (241), a support cap (242), and an opening / closing member (243).

[0050] The lifting shaft (241) may be arranged to pass through the supporter passage of the supporter (230). An opening / closing member (243) may be coupled to the lower portion of the lifting shaft (241), and a support cap (242) may be coupled to the lower portion of the lifting shaft (241). When the lifting shaft (241) is pressurized by the switch unit (300) through the support cap (242), it may rise toward the refrigerant container (500).

[0051] The support cap (242) can be selectively pressurized by the switch unit (300). When the switch piece (330) of the switch unit (300) moves laterally (rightward in FIG. 5), the support cap (242) can be pressurized in the vertical direction (upward in FIG. 5). When the support cap (242) is pressurized by the switch piece (330) of the switch unit (300), the support cap (242) can move the elevation shaft (241) upward. The support cap (242) can provide an O-ring assembly groove for preventing refrigerant leakage for coupling with the lower end of the elevation shaft (241). The support cap (242) can have a hexagonal nut shape for assembly.

[0052] The opening / closing member (243) can provide a valve function that can selectively open / close the opening / closing passage (211-3). The opening / closing member (243) can block the opening / closing passage (211-3) when the elevator shaft (241) moves upward. The opening / closing member (243) can open the opening / closing passage (211-3) when the elevator shaft (241) moves downward. The opening / closing member (243) can have an outer diameter larger than the inner diameter of the opening / closing passage (211-3). The opening / closing member (243) can be coupled to the lower portion of the elevator shaft (241).

[0053] The switch unit (300) can control the operation of the valve assembly (200). The switch unit (300) can be controlled by a user. The switch unit (300) can include a button (310), a switch rod (320), and a switch piece (330).

[0054] The button (310) can be installed so as to be retractable from the main body (100). The button (310) can be supported by the switch rod (320). The button (310) can be elastically supported on the main body (100) by an elastic member. When the button (310) is pushed by a user, the button (310) can rotate the switch rod (320).

[0055] The switch rod (320) can be rotatably hinge-connected to the main body (100). The switch rod (320) can be arranged in the main body (100) in a seesaw shape (lever shape). One end of the switch rod (320) can support the button (310), and the other end of the switch rod (320) can be hinge-connected to the switch piece (330).

[0056] The switch piece (330) can selectively pressurize the lower end of the switching member (240) by the rotation of the switch rod (320). One end of the switch piece (330) can be hinge-connected to the switch rod (320), and the other end of the switch piece (330) can selectively come into contact with the lower end of the switching member (240).

[0057] Referring again to Fig. 5, the switch piece (330) can maintain a state in which the lower portion of the opening / closing member (240) is normally pressed. At this time, since the opening / closing member (240) maintains a state in which it has moved upwards as shown in Fig. 5, the opening / closing passage (211-3) can be blocked by the opening / closing member (240). Referring again to Fig. 6, when the button (310) is pushed by the user, the switch piece (330) can be moved horizontally (to the left in Fig. 6) by the rotation (counterclockwise in Fig. 6) of the switch rod (320). At this time, the opening / closing member (240) moves downwards as shown in Fig. 6, and the opening / closing passage (211-3) is opened, so that the refrigerant can be moved from the refrigerant container (500) to the system unit (400).

[0058] The system unit (400) can guide the refrigerant discharged from the refrigerant container (500) into the nasal cavity. The system unit (400) can include a spray gun (410), a connector (420), a rotating cap (430), and a guide tube (440).

[0059] The spray gun (410) can spray refrigerant into the nasal cavity when the refrigerant is discharged from the refrigerant container (500). The spray gun (410) can be connected to a guide tube (440) via a connector (420). The spray gun (410) can include a spray tube section (411) and a spray section (412). The spray tube section (411) can provide a movement path through which the refrigerant can flow. The spray section (412) can be connected to an end of the spray tube section (411). The spray section (412) can spray the refrigerant in one direction. A plurality of spray holes can be formed on one surface of the spray section (412). The plurality of spray holes can be micro-holes having a size of 20 to 200 micrometers, preferably 50 to 200 micrometers.

[0060] The connector (420) can rotatably connect between the spray gun (410) and the guide tube (440). The connector (420) can be rotatably arranged on the main body (100). The connector (420) can be provided with a dual rotation structure. One end of the connector (420) can be connected to the spray gun (410), and the other end of the connector (420) can be connected to the guide tube (440). The one end and the other end of the connector (420) can rotate relative to each other. When the rotary cap (430) is rotated by a user, one end of the connector (420) can be rotated together with the spray gun (410), and the other end of the connector (420) can remain fixed to the guide tube (440).

[0061] The rotary cap (430) may be rotatably positioned on the main body (100). The rotation of the rotary cap (430) may be linked to the rotation of the spray gun (410). For example, when the rotary cap (430) rotates in one direction, the spray gun (410) may also rotate in one direction, and when the rotary cap (430) rotates in the other direction, the spray gun (410) may also rotate in the other direction.

[0062] The guide tube (440) can connect the other end of the connector (420) and the refrigerant discharge groove (210-4) of the block channel (211). The guide tube (440) can be formed of a refrigerant tube having a strength capable of withstanding the high pressure of the refrigerant. In the present embodiment, the guide tube (440) is formed of a refrigerant tube, but is not limited thereto, and the guide tube (440) can be a tube made of a flexible material through which the refrigerant can move.

[0063] As illustrated in FIGS. 7 to 10, a method for manufacturing a nasal catheter according to one embodiment of the present invention may include a component manufacturing step and a component assembly step.

[0064] In the above component manufacturing step, the main body, valve assembly, switch unit, and system unit of the nasal catheter can be manufactured and prepared. In particular, for the manufacture of the valve assembly, in the component manufacturing step, the valve block can be manufactured as a single integrated case through insert injection molding. When the valve block is insert injection molded, a container insertion groove, a valve mounting groove, an opening / closing groove, and a refrigerant discharge groove can be formed in the valve block. When the valve block is manufactured through insert injection molding, the cost can be reduced compared to when it is manufactured through machining, and the product can be manufactured as a product that is easy to mass-produce and has high economic efficiency.

[0065] In addition, in the above-mentioned component manufacturing step, after the valve block is insert injection molded, a block screw thread may be machined into the valve mounting groove of the valve block. In addition, a retaining ring may be rotatably coupled to the valve mounting groove of the valve block. When the retaining ring is rotatably coupled to the valve mounting groove of the valve block, the ring screw thread of the retaining ring may be engaged with the block screw thread of the valve block.

[0066] Additionally, in the above-mentioned component manufacturing step, after the fixed ring is rotatably coupled to the valve block, a supporter can be coupled to the fixed ring to manufacture a valve assembly. At this time, the supporter may have an opening / closing member assembled thereon so that it can be lifted up and down.

[0067] In the above component assembly step, when the main body, valve assembly, switch unit, and system unit are manufactured, the manufactured valve assembly, switch unit, and system unit can be assembled. For example, when the switch unit and system unit are placed in the mounting space of the main body, the main body, valve assembly, switch unit, and system unit can be tightly assembled. In particular, when the valve assembly is assembled to the main body, the valve assembly can be assembled in close contact with the main body so that the container insertion groove, valve mounting groove, opening / closing groove, and refrigerant discharge groove of the valve assembly are sealed.

[0068] As described above, the present invention has excellent advantages such as being able to achieve a stable cooling temperature through quality uniformity of a nasal catheter, improving the safety of medical staff and patients, and preventing the possibility of refrigerant leakage by manufacturing an integrated valve case through insert injection.

[0069] The embodiments described above merely illustrate some examples of the technical idea of ​​the present invention, and the scope of the technical idea of ​​the present invention is not limited to the described embodiments. Various changes, modifications, or substitutions may be possible within the scope of the technical idea of ​​the present invention by a person skilled in the art, and all such implementations should be considered to fall within the scope of the technical idea of ​​the present invention.

Claims

1. Refrigerant container for containing refrigerant; A body providing a mounting space capable of accommodating the above refrigerant container; A valve assembly for selectively discharging the refrigerant from the refrigerant container; A switch unit capable of controlling the operation of the above valve assembly; and It includes a system unit that guides the refrigerant discharged from the refrigerant container to the nasal cavity, The above valve assembly A valve block provided in the installation space so as to be in communication with the refrigerant container and providing a block channel for guiding the discharge of the refrigerant; A fixed ring coupled to the above block channel; A supporter coupled to the above-mentioned fixed ring and having a supporter path formed therein; and A switch unit is provided so as to be able to be lifted and lowered on the supporter, and includes an opening / closing member that can selectively block the block channel by the operation of the switch unit. Rhinitis catheter.

2. In paragraph 1, The above block channel is A container path into which the outlet of the above refrigerant container can be inserted; A fixed path to which the above fixed ring is coupled; and A switching passage connecting the container passage and the fixed passage, and including an opening / closing passage having an inner diameter smaller than the inner diameter of the container passage and the inner diameter of the fixed passage. Rhinitis catheter.

3. In paragraph 1, A block screw thread is formed on the inner surface of the above block channel, On the outer surface of the above fixed ring, a ring screw thread is formed to which the block screw thread is rotatably connected. Rhinitis catheter.

4. In paragraph 2, In the above valve block A container insertion groove that provides the container path, a valve mounting groove that provides the fixed path and in which the valve assembly is placed, an opening / closing groove that provides the opening / closing path, and a refrigerant discharge groove that connects the valve mounting groove and the system unit so that the refrigerant is guided to the system unit are formed. Rhinitis catheter.

5. In paragraph 2, The above opening and closing member An elevator shaft positioned so as to penetrate the above supporter passage; A support cap coupled to the lower end of the above-mentioned lifting shaft and moving the above-mentioned lifting shaft upward when pressurized by the above-mentioned switch unit; and A device that is coupled to the upper portion of the lifting shaft and includes an opening / closing member having an outer diameter larger than the inner diameter of the opening / closing passage so as to block the opening / closing passage when the lifting shaft moves upward. Rhinitis catheter.

6. In paragraph 1, The above switch unit A button installed in the above body so that it can be inserted and removed; a switch rod rotatably hinged to the body so as to support the button; and When the button is pushed, a switch piece connected to the other end of the switch rod is included so as to pressurize the lower end of the opening / closing member. Rhinitis catheter.

7. In paragraph 1, The above system unit is A spray gun for spraying the refrigerant into the nasal cavity; A connector arranged on the main body so that the above-mentioned injection gun can be rotatably connected; A rotating cap for rotating the above-mentioned spray gun; and Including a guide tube connecting the connector and the block channel, Rhinitis catheter.

8. In paragraph 7, The above case is an injection pipe section providing an injection path through which the refrigerant can flow; and A spray unit connected to the end of the injection tube and having a plurality of injection holes formed on one surface so that the refrigerant is injected in one direction, Rhinitis catheter.

9. In paragraph 1, The above body A body part having the above-mentioned mounting space formed inside and an insertion hole formed on the upper side into which the above-mentioned refrigerant container can be inserted; and Including a plug part that is rotatably coupled to the insertion hole so that the above-mentioned mounting space is separated from the external space. Rhinitis catheter.

10. A step of manufacturing parts for preparing a refrigerant container for accommodating refrigerant, a body providing a mounting space capable of accommodating the refrigerant container, a valve assembly for selectively discharging the refrigerant from the refrigerant container, a switch unit capable of controlling the operation of the valve assembly, and a system unit for guiding the refrigerant discharged from the refrigerant container to the nasal cavity; and Including a component assembly step of assembling the main body, the valve assembly, the switch unit, and the system unit, The above parts manufacturing steps are: A step of injection molding a valve block in which a container insertion groove, a valve mounting groove, an opening / closing groove, and a refrigerant discharge groove are formed; A step of machining a block screw thread in the valve mounting groove of the valve block; A step of rotatingly connecting the ring screw thread of the fixing ring to the block screw thread of the valve block; and A step of manufacturing a valve assembly by combining a supporter, in which an opening / closing member is assembled so as to be able to rise / fall, with a fixing ring, Method for manufacturing a nasal catheter.

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