Suction

Abstract

The present invention provides a suction device that prevents fluid backflow caused by air pressure. [Solution] A suction device X for sucking up fluid, comprising: a contact portion 1 that contacts the fluid and takes in the fluid; a storage portion 2 connected to the contact portion 1 and storing the fluid; and a suction portion 3 that reduces the pressure inside the storage portion 2. The contact portion 1 is provided with a first hole portion h1 extending from the part that contacts the fluid to the storage portion 2; the storage portion 1 is provided with a second hole portion h2 connected to the first hole portion h1 and a third hole portion h3 connected to the suction portion 3; the suction portion 3 has a cylindrical body 31 and a piston portion 32 that is slidably inserted into the cylindrical body 31; and the cylindrical body 31 has a third hole A fourth hole portion h4 is provided connected to portion h3, and the piston portion 32 includes a bottom portion 321 that is provided to suck and push out air, a piston rod portion 322 with one end provided on the bottom portion 321, and a gripping portion 323 provided on the other end of the piston rod portion 322. The bottom portion 321 is provided with a packing portion p having a predetermined thickness, and the packing portion p is provided with an inclination that converges toward the direction of air expulsion, so that its base end is in close contact with the side surface of the cylindrical body 31 when air is sucked in. The contact portion 1 is provided so that it can be inserted into a person's nose, thereby achieving effective suction of nasal mucus.

Description

Technical Field

[0001] This invention relates to a manually-operated fluid suction device.

Background Art

[0002] When sucking a fluid with a piston, the user sucks the fluid by pulling the piston from its initial position. And after sucking the fluid, in order to suck the fluid again, it is necessary to return the piston to its initial position. At this time, returning the piston to its initial position means pushing out air, and it often becomes a problem that the fluid sucked at that time flows back.

[0003] As a solution to this problem, it is conceivable to provide a check valve. However, since the check valve has a precise structure for controlling the fluid, its maintainability deteriorates, and it is likely to malfunction due to the entry of minute objects. Using a check valve causes such new problems.

Summary of the Invention

Problems to be Solved by the Invention

[0004] This invention has been made in view of the above actual situation, and an object thereof is to provide a suction device that prevents the backflow of fluid caused by the extrusion of air, has a simple structure, and is less likely to malfunction even when minute objects enter.

Means for Solving the Problems

[0005] To achieve this object, the present disclosure provides suction devices [1] to

[10] .

[0006] [1] A suction device for sucking a fluid, comprising a contact portion that contacts the fluid and takes in the fluid, a storage portion that is connected to the contact portion and stores the fluid, and a suction portion that decompresses the inside of the storage portion. The contact portion is provided with a first hole that extends from the portion in contact with the fluid to the storage portion. The storage section is provided with a second hole connected to the first hole and a third hole connected to the suction section. The suction portion comprises a cylindrical body and a piston portion slidably inserted into the cylindrical body. The cylindrical body is provided with a fourth hole connected to the third hole, The piston portion includes a bottom portion that is provided to be able to suck in and push out air, a piston rod portion with one end provided at the bottom portion, and a gripping portion provided at the other end of the piston rod portion. The bottom portion is provided with a packing portion having a predetermined thickness. The packing portion is provided with an inclination that converges in the direction of air expulsion, so that its base end is in close contact with the side surface of the cylindrical body when air is drawn in. Aspirator.

[0007] [2] The bottom portion is a substantially plate-shaped member perpendicular to the direction of air extrusion. The packing portion is provided on the base end side at a predetermined distance from the bottom portion in the direction of air expulsion. [1] The suction device described above.

[0008] [3] The bottom portion is provided with positioning means for determining the position of the packing portion in the sliding direction. [1] The suction device described above.

[0009] [4] The suction portion further comprises an elastic body configured to expand and contract in the direction of air expulsion, with both ends of the elastic body and the piston portion respectively provided therein. [1] The suction device described above.

[0010] [5] The suction portion further includes a guide portion that guides the sliding direction of the piston rod portion. [1] The suction device described above.

[0011] [6] The gripping part intersects the piston rod part and is formed in a substantially plate shape, An auxiliary gripping part is provided on the cylindrical body, The auxiliary gripping part is provided with a support part extending along the sliding direction of the piston rod part, and an auxiliary gripping part main body provided so as to intersect the support part and formed in a substantially plate shape, The gripping part and the auxiliary gripping part are provided substantially in parallel, The suction device according to [1].

[0012] [7] The second hole part is a pipe part having a predetermined length and extending toward the inner surface of the storage part, The suction device according to [1].

[0013] [8] The third hole part is a pipe part having a predetermined length and extending toward the inner surface of the storage part, The suction device according to [1].

[0014] [9] The storage part has a pair of storage part components, The pair of storage part components are attached to each other by attachment means, The suction device according to [1].

[0015]

[10] The fluid is human nasal mucus, The contact part is provided so as to be insertable into the human nose, The suction device according to any one of [1] to [9].

Advantages of the Invention

[0016] According to the present invention, it is possible to provide a suction device that prevents backflow of fluid due to extrusion of air.

Brief Description of the Drawings

[0017] [Figure 1] It is a side view showing a suction device according to an embodiment of the present invention. [Figure 2] This is a perspective view showing the contact portion and storage portion of a suction device according to an embodiment of the present invention. [Figure 3] This is an exploded perspective view showing the piston and other components provided in a suction device according to an embodiment of the present invention. [Figure 4] This is an exploded perspective view showing a cylindrical body provided in a suction device according to an embodiment of the present invention. [Figure 5] This is a side view showing the suction section provided in a suction device according to an embodiment of the present invention. [Figure 6] This is a side view showing the changes during sliding of a packing part and the like provided in a suction device according to an embodiment of the present invention. [Modes for carrying out the invention]

[0018] The suction device according to an embodiment of the present invention will be described below with reference to Figures 1 to 6. The embodiments described below are merely examples of the present invention and are not limited to these embodiments. In these figures, the symbol X indicates the suction device according to this embodiment. Furthermore, unless otherwise specified, the dotted lines in these diagrams indicate other components hidden within the existing components.

[0019] <Structure> Suction device X is used to aspirate fluid. In particular, the fluid is assumed to be human nasal mucus. As shown in Figure 1, the suction device X comprises a contact section 1 that comes into contact with the fluid and takes in the fluid, a storage section 2 connected to the contact section 1 and stores the fluid, and a suction section 3 that reduces the pressure inside the storage section 2. In Figure 1, the internal structure of the cylindrical body 31, which will be described later, is shown by solid lines.

[0020] The contact portion 1 is designed to be insertable into a person's nose. Specifically, the contact portion 1 preferably has a predetermined thickness and a rounded tip, and is designed to be inclined to converge from the base to the tip. Furthermore, it is preferable that the contact portion 1 is made of a flexible material such as silicone.

[0021] As shown in Figure 1 and Figure 2, the contact portion 1 is provided with a first hole h1 that extends from the fluid contact portion to the storage portion 2. Note that in Figure 2(a), some of the components related to the storage portion 2 are omitted. Also, in Figure 2(b), the disassembled state of the storage portion 2 is shown.

[0022] The storage unit 2 has a pair of storage unit components 2a and 2b. Furthermore, the storage section 2 is provided with a second hole h2 connected to the first hole h1 and a third hole h3 connected to the suction section 3.

[0023] The storage section 2 is a cylindrical member having a hollow structure. Furthermore, it is preferable that the storage section 2 is made of a material that has a predetermined rigidity, such as synthetic resin, and is washable with water.

[0024] The pair of storage components 2a and 2b are attached to each other by mounting means 2c and 2d. Here, the mounting means 2c and 2d are a pair of screw caps s1, but other fastening means or fitting means may also be used.

[0025] The second hole h2 is a tubular portion having a predetermined length and extending toward the inner surface of the storage section 2. Furthermore, as shown in Figure 1 in particular, the second hole h2 is positioned such that, in a side view, one end of the second hole h2 is located closer to the bottom surface of the storage section 2, on the side where the third hole h3 is provided, than one end of the third hole h3. In other words, the second hole h2 extends long enough so as not to face the end of the third hole h3.

[0026] Furthermore, the length of the second hole h2 is not necessarily a requirement, as it is sufficient for the second hole h2 to function as long as it is not positioned to face the third hole h3. For example, the end face of the second hole h2 may face the side surface of the storage section 2.

[0027] Furthermore, the second hole h2 extends outward from the storage section 2, substantially coinciding with the extension direction of the first hole h1.

[0028] The third hole h3, like the second hole h2, is a tubular portion that has a predetermined length and extends toward the inner surface of the storage section 2. Furthermore, the third hole h3 is connected to the hose h30, thereby connecting to the suction section 3 (particularly the fourth hole h4) which will be described later. Here, the hose h30 is not required. In this case, the third hole h3 and the fourth hole h4 are directly attached by mounting means such as fitting. Note that the shape and other configuration of the third hole h3 are the same as those of the second hole h2, so they are omitted.

[0029] In particular, as shown in Figures 1 and 3, the suction unit 3 includes a cylindrical body 31, a piston unit 32 slidably inserted into the cylindrical body 31, an elastic body 33 whose ends are provided on the cylindrical body 31 and the piston unit 32 respectively, and which is configured to be expandable and contractible in the direction of air expulsion, a guide unit 34 that guides the sliding direction of the piston rod unit 322 (a configuration including the piston unit 32), which will be described later, and a lid l.

[0030] As shown in Figure 1 and Figure 4, the cylindrical body 31 is provided with a fourth hole h4 connected to the third hole h3 (where the hose h30 is located). In Figure 4, the components hidden inside the cylindrical body 31 are represented by solid lines. Furthermore, one end face of the cylindrical body 31 is provided with an open end, and the end is provided with a screw cap s2 corresponding to the screw cap s2 of the lid l, which will be described later. Furthermore, as shown in Figure 5 in particular, the outer surface of the cylindrical body 31 is provided with multiple grooves that extend along its entire height. This makes it easier to stabilize the point of force when removing the cylindrical body 31 from the lid l. Furthermore, the cylindrical body 31 is provided with an auxiliary gripping part sh that assists the function of the gripping part 323, which will be described later. Here, the auxiliary gripping part sh is provided on the cylindrical body 31 because it is attached to the lid l, which will be described later. Furthermore, the cylindrical body 31 is constructed in a hollow cylindrical shape.

[0031] The fourth hole h4 is provided with a check valve v to prevent debris contained in the storage section 2 or the suction section 3 from moving between the storage section and the suction section. Furthermore, the fourth hole h4 is provided with a screw cap s3 corresponding to the screw cap s3 of the check valve v. Furthermore, the fourth hole h4 protrudes from the cylindrical body 31. In this way, it is connected to the third hole h3 (and the hose h30 provided therein).

[0032] The check valve v is provided with a screw cap s3 corresponding to the screw cap s3 of the fourth hole h4. Furthermore, the check valve v is provided with a vent hole c through which air in the fourth hole can pass.

[0033] In particular, as shown in Figures 1 and 3, the auxiliary gripping portion sh is provided with a support portion sh1 that extends along the sliding direction of the piston rod portion 322, which will be described later, and an auxiliary gripping portion body sh2 that is provided intersecting the support portion sh1 and is formed in a substantially plate shape.

[0034] The piston portion 32 includes a bottom portion 321 that is provided to allow air to be sucked in and pushed out, a piston rod portion 322 with one end provided on the bottom portion 321, and a gripping portion 323 provided on the other end of the piston rod portion 322.

[0035] The bottom portion 321 is provided with a packing portion p having a predetermined thickness and a positioning means d for determining the position of the packing portion p in the sliding direction. Furthermore, the bottom portion 321 is a roughly plate-shaped member perpendicular to the direction of air extrusion. In a plan view, multiple notches n are provided near its outer circumference. This allows air to be guided into the small gap formed between the packing portion p and the side surface of the cylindrical body 31 when air is extruded. Furthermore, the bottom portion 321 is provided with a screw cap s4 corresponding to the screw cap s4 of the piston rod portion 322, which will be described later.

[0036] The packing portion p is provided on the base end side at a predetermined distance from the bottom portion 321 in the direction of air expulsion. Furthermore, the packing portion p is provided with an inclination so as to converge in the direction of air expulsion, so that its base end is in close contact with the side surface of the cylindrical body 31 when air is being drawn in. Furthermore, the packing portion p is provided with an insertion hole i1 approximately in the center when viewed from above. This allows the packing portion p to be attached to the piston rod portion 322 by insertion.

[0037] The positioning means d is a substantially plate-shaped member provided on the base end side of the packing portion p in the direction of air extrusion. Furthermore, the positioning means d is provided with an insertion hole i2 located approximately in the center of the plan view. This allows the positioning means d to be attached to the piston rod portion 322 by insertion.

[0038] The relationship between the bottom portion 321, the packing portion p, and the positioning means d is summarized below. In other words, the bottom portion 321 and the positioning means d determine the position of the packing portion p by clamping it from both ends in the direction of air extrusion. Furthermore, the width formed by the bottom portion 321 and the positioning means d in the direction of air extrusion is wider than the thickness of the packing portion p, thereby providing a predetermined margin in the range of motion of the packing portion p. In this way, ventilation from the notch n during air extrusion to the small gap formed between the packing portion p and the side surface of the cylindrical body 31 is made effective.

[0039] The piston rod portion 322 is a substantially rod-shaped member that extends along the entire length of the cylindrical body 31 in the height direction. Its diameter is smaller than that of the insertion holes i1 and i2. A screw cap s4 corresponding to the screw cap s4 of the bottom portion 321 is provided at its tip.

[0040] The gripping portion 323 intersects with the piston rod portion 322 and is formed in a roughly plate-like shape. Furthermore, the gripping portion 323 is provided with a mounting portion m for attaching the gripping portion 323 and the piston rod portion 322. Furthermore, the gripping portion 323 is provided with a finger rest f for placing a finger on. The gripping portion 323 is provided approximately parallel to the auxiliary gripping portion sh.

[0041] The elastic body 33 has one end attached to the positioning means d and the other end attached to the lid l, which will be described later. The elastic body 33 is a spring, but any type of material is acceptable as long as it has enough elasticity to return the bottom portion 321 to its initial position.

[0042] The guide portion 34 is an insertion hole provided in the cover l, which will be described later, and in plan view, its shape is approximately the same as the sliding portion of the piston rod portion 322.

[0043] The lid l covers the end face of the cylindrical body 31. Furthermore, the lid l is provided with a screw cap s2 that corresponds to the screw cap s2 of the cylindrical body 31.

[0044] <How to use> First, the user inserts the contact part 1 into the person's nose. Next, the user hooks their ring finger to little finger onto the gripping part 323 of the suction part 3, and hooks the base of their thumb onto the auxiliary gripping part sh. Then, the user suctions nasal mucus by pulling the gripping part 323 towards the palm.

[0045] <Effects> The inclination provided in the packing portion p allows for depressurization of the storage portion 2, and also guides the air toward the gripping portion 323 when air is pushed out from the suction portion 3. In other words, backflow of nasal mucus from the storage portion 2 to the contact portion 1 is prevented.

[0046] More specifically, as shown in Figure 6(a), when air is drawn in, the sharp corner portion of the packing part p in the side view flexes, causing the part from the corner to the top edge to be in close contact with the cylindrical body 31. On the other hand, as shown in Figure 6(b), when air is pushed out, the inclined portion of the packing part p hardly makes contact due to its inclination. This prevents the aforementioned backflow. In Figure 6, the sliding direction of the packing portion p, etc., is indicated by an arrow. The position of the packing portion p, etc., before sliding is indicated by a dotted line.

[0047] Furthermore, the packing portion p is provided at a predetermined distance from the bottom portion 321 towards the base end, and the bottom portion 321 has a notch n, which makes the above-mentioned air guidance more effective.

[0048] Furthermore, the positioning means d allows the packing portion p to be removable and its position to be determined.

[0049] Furthermore, the elastic body 33 automatically returns the piston portion 32 to its initial position after suction.

[0050] Furthermore, the guide portion 34 stabilizes the sliding direction of the piston portion 32.

[0051] Furthermore, the gripping part 323 and the auxiliary gripping part sh constitute a suction device X that can effectively suck up fluid with little force.

[0052] Furthermore, the second hole h2 has a predetermined length and extends toward the inner surface of the storage section 2, preventing nasal mucus from flowing into the third hole h3.

[0053] Furthermore, by having a predetermined length and extending toward the inner surface of the storage section 2, nasal mucus is prevented from flowing into the third hole h3 regardless of the angle at which the storage section 2 is tilted.

[0054] Furthermore, the pair of storage unit components 2a and 2b make the storage unit detachable and washable.

[0055] Furthermore, by providing the contact portion 1 so that it can be inserted into a person's nose, effective suction of nasal mucus is achieved.

[0056] <Example of changes> The shapes and dimensions of the components shown in the above embodiment are merely examples and can be modified in various ways based on design requirements, etc.

[0057] For example, the storage section 2 may be a bag.

[0058] Furthermore, the contact portion 1 and the storage portion 2, or the storage portion 2 and the suction portion 3, may be formed integrally.

[0059] In application documents, the term "abbreviated" is a concept that includes shapes that have been chamfered or rounded, or shapes whose constituent elements have been modified or altered in length to the extent that it does not impede the purpose of the shape. [Explanation of Symbols]

[0060] X Aspirator 1 Contact area 2 Storage section 2a Storage Unit Components 2b Storage unit components 2c Mounting means 2d Mounting means 3 Suction part 31 Cylinder 32 Piston section 321 Bottom 322 Piston rod section 323 Gripping part 33 Elastic body 34 Information Department c. Ventilation opening d Positioning means f Finger rest h1 First hole h2 Second hole h3 Third hole h30 hose h4 Fourth hole i1 Through hole i2 Through hole l Lid body m Mounting part n notch p packing part s1 Screw cap S2 Screw Cap S3 Screw Cap S4 Screw Cap sh Auxiliary grip part sh1 support part sh2 Auxiliary grip body v Check valve

Claims

1. A suction device for drawing in fluid, The device comprises a contact portion that comes into contact with the fluid and takes in the fluid, a storage portion connected to the contact portion and stores the fluid, and a suction portion that reduces the pressure inside the storage portion. The contact portion is provided with a first hole that extends from the portion in contact with the fluid to the storage portion. The storage section is provided with a second hole connected to the first hole and a third hole connected to the suction section. The suction portion comprises a cylindrical body and a piston portion slidably inserted into the cylindrical body. The cylindrical body is provided with a fourth hole connected to the third hole, The piston portion includes a bottom portion that is provided to be able to suck in and push out air, a piston rod portion with one end provided at the bottom portion, and a gripping portion provided at the other end of the piston rod portion. The bottom portion is provided with a packing portion having a predetermined thickness. The packing portion is provided with an inclination that converges in the direction of air expulsion, so that its base end is in close contact with the side surface of the cylindrical body when air is drawn in. Aspirator.

2. The bottom portion is a substantially plate-shaped member perpendicular to the direction of air extrusion. The packing portion is provided on the base end side at a predetermined distance from the bottom portion in the direction of air expulsion. The suction device according to claim 1.

3. The bottom portion is provided with positioning means for determining the position of the packing portion in the sliding direction. The suction device according to claim 1.

4. The suction portion further comprises an elastic body configured to expand and contract in the direction of air expulsion, with both ends of the elastic body and the piston portion respectively provided therein. The suction device according to claim 1.

5. The suction portion further includes a guide portion that guides the sliding direction of the piston rod portion. The suction device according to claim 1.

6. The gripping portion intersects the piston rod portion and is formed in a substantially plate shape. The cylindrical body is provided with an auxiliary gripping portion. The auxiliary gripping portion is provided with a support portion extending along the sliding direction of the piston rod portion, and an auxiliary gripping portion body that is provided intersecting the support portion and is formed in a substantially plate shape. The gripping portion and the auxiliary gripping portion are arranged substantially parallel to each other. The suction device according to claim 1.

7. The second hole is a tubular portion having a predetermined length and extending toward the inner surface of the storage portion. The suction device according to claim 1.

8. The third hole is a tubular portion having a predetermined length and extending toward the inner surface of the storage portion. The suction device according to claim 1.

9. The storage section has a pair of storage section components, The pair of storage components are attached to each other by mounting means. The suction device according to claim 1.

10. The fluid in question is human nasal mucus. The contact portion is provided so as to be insertable into the person's nose. A suction device according to any one of claims 1 to 9.

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