JP2021119867A - Medical suction equipment - Google Patents

Abstract

To provide medical suction equipment which allows the smooth expansion of a balloon in a desired shape.SOLUTION: Medical suction equipment 100 for sucking a waste liquid by negative pressure comprises a negative pressure vessel 10, an exhaust part 30 connected to the negative pressure vessel 10, exhausting air from the inside to the outside when contracted by a compression operation, and sucking in air from the negative pressure vessel 10 when elastically restored, and a balloon 20 arranged in the negative pressure vessel 10. The inside of the balloon 20 communicates with atmospheric air through a fine hole which is formed at the negative pressure vessel 10, the balloon 20 is expanded as the pressure of the negative pressure vessel 10 becomes negative, and the inside 11a of the negative pressure vessel 10 is coated with oil.SELECTED DRAWING: Figure 1

Description

The present invention relates to a medical suction device.

As a medical suction device that sucks drainage (body fluid) from a living body through a tube, it is connected to a negative pressure container and a negative pressure container, and when it contracts by a squeezing operation, it is exhausted from the inside to the outside and elastically restored. It is equipped with an exhaust part that takes in air from the negative pressure container and a balloon that is arranged inside the negative pressure container, and the inside of the balloon communicates with the outside air through the pores formed in the negative pressure container. , There is a type in which the balloon expands as the negative pressure container becomes negative pressure.
As such a medical suction device, for example, there is one described in Patent Document 1.

Japanese Unexamined Patent Publication No. 2013-74914

By the way, in the process of inflating the balloon, it is desired that the balloon inflates into a desired shape as smoothly as possible.

The present invention has been made in view of the above problems, and provides a medical suction device capable of smoothly inflating a balloon into a desired shape.

The present invention is a medical suction device that sucks drainage by negative pressure.
Negative pressure container and
An exhaust unit connected to the negative pressure container, which is exhausted from the inside to the outside when contracted by a squeezing operation and is taken in from the negative pressure container when elastically restored.
The balloon placed in the negative pressure container and
With
The inside of the balloon communicates with the outside air through the pores formed in the negative pressure container.
The balloon is inflated as the negative pressure container becomes negative pressure.
It provides a medical suction device in which oil is applied to the inner surface of the negative pressure container.

According to the present invention, since the balloon is suppressed from being caught on the inner surface of the negative pressure container, the balloon can be smoothly expanded into a desired shape.

It is a front view of the medical suction device which concerns on embodiment, and shows the state before exhausting from a negative pressure container. It is a front view of the medical suction device which concerns on embodiment, and shows the state which exhausted from a negative pressure container. It is a front view of the medical suction device which concerns on embodiment, and shows the state which the balloon came into contact with the inner surface of a negative pressure container in the process of performing a series of exhaust operations. A medical suction device according to an embodiment is shown, and is a plan sectional view taken along the line AA shown in FIG. 5 (a), 5 (b), 5 (c) and 5 (d) are partially enlarged views of the side wall portion of the negative pressure container in the embodiment. 6 (a), 6 (b), 6 (c) and 6 (d) are partially enlarged views of the balloon in the embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same components are designated by the same reference numerals, and the description thereof will be omitted as appropriate.
The embodiments described below are merely examples for facilitating the understanding of the present invention, and do not limit the present invention. That is, the shapes, dimensions, arrangements, etc. of the members described below can be changed and improved without departing from the spirit of the present invention, and the present invention includes equivalents thereof.

As shown in FIGS. 1 to 6 (d), the medical suction device 100 according to the present embodiment is a medical suction device 100 that sucks drainage by negative pressure, and is a negative pressure container 10 and a negative pressure. An exhaust unit 30 connected to the container 10 and exhausted from the inside to the outside when contracted by a squeezing operation and sucked from the negative pressure container 10 when elastically restored, and a balloon arranged in the negative pressure container 10. 20 and.
The inside of the balloon 20 communicates with the outside air through the pores 18a formed in the negative pressure container 10, and the balloon 20 expands as the negative pressure container 10 becomes negative pressure. Oil 41 is applied to the inner surface 11a of the pressure vessel 10.

In the medical suction device 100, when the balloon 20 expands to some extent (when the inside of the negative pressure container 10 becomes negative pressure to some extent), the outer surface 21 of the balloon 20 comes into contact with the inner surface 11a of the negative pressure container 10 (see FIG. 3). Then, when the inside of the negative pressure container 10 becomes further negative pressure, the balloon 20 further expands along the inner surface 11a of the negative pressure container 10 (see FIG. 2).

Here, in the case of the present embodiment, the slipperiness (lubricity) of the inner surface 11a of the negative pressure container 10 is improved by the oil 41, so that the frictional force generated between the inner surface 11a and the outer surface 21 is reduced. Therefore, the inner surface 11a and the outer surface 21 can slide smoothly with each other.
As a result, inside the negative pressure container 10, the outer surface 21 of the balloon 20 is suppressed from being caught by the inner surface 11a of the negative pressure container 10, and the balloon 20 is easily relative to the inner surface 11a in accordance with its own expansion. Can be displaced. Therefore, the balloon 20 can be smoothly inflated into a desired shape.

Hereinafter, a more detailed description will be given.
Of FIGS. 1 to 6 (d), FIG. 1 shows the natural state of the balloon 20, and FIG. 2 shows the state in which the balloon 20 is in the maximum expansion. Further, FIG. 3 shows the moment when the balloon 20 comes into contact with the inner surface 11a of the negative pressure container 10 in the process from the natural state to the maximum expansion. FIG. 4 shows a plan sectional view of the balloon 20 in a state of maximum expansion. As shown in FIG. 2, the state in which the balloon 20 is maximally inflated here means that the elastic restoring force of the exhaust unit 30 and the pressure inside the negative pressure container 10 are balanced. For example, the exhaust unit It means a state in which the pumping operation described later is performed until 30 is in a state where it is not restored to the shape in the natural state (see FIG. 1). 5 (a) to 5 (d) are cross-sectional views taken by cutting any one of the side wall portions 53 to 56 described later of the negative pressure container 10 in the thickness direction. 6 (a) to 6 (d) are cross-sectional views taken along the wall thickness direction of the balloon 20 with a part of the balloon 20 flattened.
In the following, the "vertical direction" refers to the vertical direction in which the medical suction device 100 is arranged in the directions shown in FIGS. 1 to 3. More specifically, the medical suction device 100 can stand on its own by being placed on a horizontal mounting surface in the postures shown in FIGS. 1 to 3.

As shown in FIGS. 1 to 4, the shape of the negative pressure container 10 is not particularly limited, but the negative pressure container 10 (container body 11 described later) is formed, for example, in a rectangular parallelepiped shape. The rectangular parallelepiped here means that there are three pairs of facing surfaces, and the adjacent surfaces are substantially orthogonal to each other.
The negative pressure container 10 includes, for example, a top plate 51 and a bottom plate 52 arranged horizontally, and four side wall portions 53, 54, 55, 56 orthogonal to each of the top plate 51 and the bottom plate 52. ing. The top plate 51, the bottom plate 52, and the side wall portions 53 to 56 are formed in a plate shape, for example.
As shown in FIG. 1, the side wall portion 53 and the side wall portion 54 are arranged so as to face each other. Further, as shown in FIG. 4, the side wall portion 55 and the side wall portion 56 are arranged so as to face each other and are orthogonal to each of the side wall portion 53 and the side wall portion 54.
Here, the inner surface 11a of the negative pressure container 10 is, for example, the inner surface of the top plate 51 (hereinafter, top surface 51a), the inner surface of the bottom plate 52 (hereinafter, bottom surface 52a), and the inner surface of each side wall portion 53 to 56 (hereinafter, hereinafter, Side surfaces 53a, 54a, 55a, 56a) and include.

The negative pressure container 10 includes, for example, a container body 11 and a cap 18 attached to the upper end of the container body 11.
As shown in FIGS. 1 to 4, the container body 11 (negative pressure container 10) is formed in a rectangular parallelepiped shape, for example, as described above.
The top plate 51 of the container body 11 is formed with a first mouth neck portion 11b and a second mouth neck portion 11c having an axial direction in the vertical direction, respectively.
The first mouth neck portion 11b is formed in a cylindrical shape and projects upward from the top plate 51 of the container body 11. The internal space of the first mouth neck 11b communicates with the internal space of the container body 11 through an opening on the base end (lower end) side of the first mouth neck 11b. The first mouth neck 11b has a thread formed on the outer peripheral surface, and the first mouth neck 11b has a male screw shape.
The cap 18 is a screw cap. The cap 18 includes a tubular portion and a flat plate-shaped closing portion that closes one end side of the tubular portion in the axial direction. A thread is formed on the inner peripheral surface of the tubular portion to be screwed with the first mouth neck portion 11b. The cap 18 is detachably attached to the first mouth neck 11b by screwing the tubular portion into the first mouth neck 11b. As a result, the cap 18 closes the opening at the tip (upper end) of the first mouth neck 11b. Pore 18a is formed in the closed portion of the cap 18 so as to vertically penetrate the closed portion.
A holding cylinder portion 18b for holding the balloon 20 is formed in the closed portion of the cap 18. The holding tubular portion 18b is formed to have a smaller diameter than the tubular portion of the cap 18, and is arranged coaxially with the tubular portion, and hangs downward from the closed portion of the cap 18. In a plan view, the pores 18a are arranged in the inner range of the holding cylinder portion 18b.
The second mouth neck portion 11c is formed in a cylindrical shape and projects upward from the top plate of the container body 11. The internal space of the second mouth neck 11c communicates with the internal space of the container body 11 through an opening on the base end (lower end) side of the second mouth neck 11c. The second mouth neck 11c is provided with a one-sided valve 32. The second oral neck 11c is closed by a one-way valve 32.

Here, in the negative pressure container 10 (container body 11), the boundary portion between each of the top plate 51 and the bottom plate 52 and each of the side wall portions 53 to 56 has a chamfered shape, for example, over the entire circumference. Therefore, the boundary between each of the top surface 51a and the bottom surface 52a and each of the side surfaces 53a to 56a has a chamfered shape over the entire circumference, for example. Further, the boundary portion between the side wall portions 53 to 56 has a chamfered shape, for example. Therefore, the boundary between the side surfaces 53a to 56a has, for example, a chamfered shape.
Further, the eight corners of the negative pressure container 10 (container body 11) may be formed in a round shape, for example.

Further, the negative pressure container 10 is attached to, for example, a suction side tube 14 provided on the top plate 51 of the container body 11, a connector 16 communicating with the suction side tube 14, and a suction side tube 14. It includes a clamp member 15.
The suction side tube 14 is a flexible tube, and the internal space of the suction side tube 14 communicates with the internal space of the container body 11. A tubular connector 16 is provided at the tip end portion (upper end portion) of the suction side tube 14. The internal space of the connector 16 communicates with the internal space of the suction side tube 14. A suction port 16a is formed at the tip (upper end) of the connector 16.
The clamp member 15 is formed in a long plate shape in one direction. The clamp member 15 is formed with a slit extending in the longitudinal direction of the clamp member 15. The suction side tube 14 is inserted through this slit, and the clamp member 15 is held by the suction side tube 14.
A part of the slit of the clamp member 15 is a wide portion formed relatively wide, and the rest of the slit is a narrow portion formed relatively narrow. The wide portion and the narrow portion are arranged continuously with each other.
By sliding the clamp member 15 relative to the suction side tube 14 so that the suction side tube 14 passes through the wide portion of the slit, the flow path inside the suction side tube 14 is opened, and the suction port 16a is opened. Communicates with the internal space of the container body 11 via the connector 16 and the suction side tube 14. By sliding the clamp member 15 relative to the suction side tube 14 so that the suction side tube 14 passes through the narrow portion of the slit, the suction side tube 14 is tightened by the clamp member 15 and the suction side tube 14 is tightened. The internal flow path of the container 10 is closed, the suction port 16a and the internal space of the container body 11 are mutually blocked, and the internal space of the negative pressure container 10 is closed from the outside.
Drainage after use of the medical suction device 100 on the top surface of the container body 11 at a position different from the position where the suction side tube 14, the first mouth neck 11b and the second mouth neck 11c are provided. A discharge port 12a for discharging the above is formed.
A discharge port cap 17 capable of opening and closing the discharge port 12a is attached to the discharge port 12a. Normally, the discharge port 12a is closed by the discharge port cap 17.
The container body 11 does not have to have a discharge port 12a. In this case, for example, with the cap 18 (and the balloon 20) removed from the first mouth neck 11b, the drainage may be discharged to the outside through the opening at the tip of the first mouth neck 11b.
Further, the container body 11 may be provided with a scale for confirming, for example, the amount of liquid (liquid collection amount) collected in the container body 11 by suction.

The container body 11 is made of, for example, a transparent (transparent to visible light) resin material. The transparent resin material is not particularly limited, but for example, a rigid vinyl chloride resin, a polyester resin such as polyethylene terephthalate, a styrene resin such as an acrylic nitrile-styrene copolymer resin, and a polyolefin such as polypropylene (PP) or PE. Styrene and the like can be mentioned.

The balloon 20 is made of an elastic material capable of expanding and contracting. The material of the balloon 20 is, for example, a rubber material such as natural rubber, isoprene rubber, or chloroprene rubber, a styrene-based thermoplastic elastomer such as a styrene-butadiene copolymer, a styrene-isoprene copolymer, an olefin-based thermoplastic elastomer, or an amide-based material. It is preferably a thermoplastic elastomer material such as an elastomer or a polyester-based elastomer.
The hardness of the material of the balloon 20 (JIS hardness) is not particularly limited, but is preferably 20 degrees or more and 50 degrees or less, for example. In the case of the present embodiment, the hardness of the material constituting the balloon 20 is, for example, around 30 degrees. Here, the JIS hardness is a value measured by a method using a durometer defined in JIS K 6253 as a measuring instrument.
The wall thickness of the balloon 20 is not particularly limited, but is preferably 0.2 mm or more and 0.6 mm or less, for example. In the case of this embodiment, the wall thickness of the balloon 20 is, for example, about 0.4 mm.
The longitudinal dimension of the balloon 20 is, for example, 40 mm or more and 80 mm or less, and the radial dimension orthogonal to the longitudinal direction is, for example, 15 mm or more and 30 mm or less.

The shape of the balloon 20 is not particularly limited, but for example, it is formed in a tubular shape in which one end (upper end) is open and the other end is closed, and the shape before inflating (see FIG. 1) is up and down. It is long. The holding cylinder portion 18b of the cap 18 is inserted through the opening on the upper end side of the balloon 20, and the balloon 20 is airtightly attached to the holding cylinder portion 18b. The balloon 20 is held by the holding cylinder portion 18b.
The internal space of the balloon 20 communicates with the external space of the negative pressure container 10 through the pores 18a of the cap 18.

As shown in FIGS. 2, 3 and 4, in the process from the natural state (cylindrical shape shown in FIG. 1) to the maximum expansion of the balloon 20, the central portion of the top surface 51a and the central portion of the bottom surface 52a. The central portion of each of the four sides 53a-56a comes into contact with the balloon 20 mainly.
Further, when the balloon 20 is in the maximum inflated state, further expansion of the balloon 20 is restricted by the inner surface 11a of the negative pressure container 10 (container body 11), so that the balloon 20 is along the inner surface 11a of the negative pressure container 10. It swells into a vertical shape and comes into close contact with the inner surface 11a of the negative pressure container 10 (see FIG. 2). More specifically, for example, the balloon 20 is a portion of the negative pressure container 10 (container body 11) excluding the eight corners (corners), and is a portion where the first mouth neck 11b is formed and the second mouth neck. It is in close contact with the portion excluding the formed portion of 11c, the connecting portion with the suction side tube 14, and the formed portion of the discharge port 12a. More specifically, as shown in FIGS. 2 and 4, in the state where the balloon 20 is in the maximum expansion, for example, the negative pressure container 10 is located near the eight corners (corners) of the negative pressure container 10, respectively. A gap 61 to 66 (not shown for some gaps) is formed between the inner surface 11a of the balloon 20 and the outer surface 21 of the balloon 20. However, in the state where the balloon 20 is in the maximum expansion, for example, the voids 61 to 66 are not formed, and the balloon 20 is in close contact with the eight corners (corners) of the negative pressure container 10. It may be.

The exhaust portion 30 includes, for example, a squeezing member 31 which is formed in a hollow shape and accepts a squeezing operation, and a one-sided valve 33 provided at a boundary between the squeezing member 31 and the external space. .. The squeezing operation is performed by the operator manually squeezing the squeezing member 31.
The squeezing member 31 has, for example, a substantially spherical shape (FIG. 1) in a natural state before the squeezing operation is performed. The squeezing member 31 is elastically deformed (contracted) by the squeezing operation, and is restored to its original shape by the elastic restoring force when the squeezing operation is released.
The pressing member 31 has, for example, a lower mouth neck 31c formed at the lower end of the pressing member 31 and an upper mouth neck 31d formed at the upper end of the pressing member 31. The lower mouth neck 31c and the upper mouth neck 31d are each formed in a cylindrical shape with the vertical direction as the axial direction.
The upper mouth neck 31d is provided with a one-sided valve 33, and the upper mouth neck 31d is closed by the one-sided valve 33. On the other hand, the valve 33 allows exhaust from the inside of the pressing member 31 to the outside (outside of the medical suction device 100), while the valve 33 allows exhaust from the outside of the pressing member 31 (outside of the medical suction device 100) to the inside of the pressing member 31. The inflow of outside air to the area is regulated.
The second mouth neck portion 11c of the container body 11 is press-fitted into the lower mouth neck portion 31c of the pressing member 31, and the pressing member 31 is airtightly attached to the container body 11. As a result, the one-sided valve 32 is arranged at the boundary between the internal space of the container body 11 and the internal space of the pressing member 31.
On the other hand, the valve 32 allows intake from the inside of the container body 11 to the inside of the pressing member 31, while restricting the backflow of gas from the inside of the pressing member 31 to the inside of the container body 11.
It is also preferable that a fastener such as a cable tie is provided around the lower mouth neck 31c.
The material of the pressing member 31 is not particularly limited, but may be, for example, natural rubber, or synthetic rubber such as isoprene rubber or silicon rubber.

Here, one cycle of exhaust operation is performed until the squeezing member 31 is contracted by one squeezing operation on the squeezing member 31 of the exhaust unit 30 and the squeezing member 31 is elastically restored once by releasing the squeezing operation. Further, the operation by the operator for performing the exhaust operation is called a pumping operation.

The drainage liquid sucked by the medical suction device 100 is stored in the container body 11.
The body fluid introduction port on the top surface of the container body 11 (the part communicating with the suction side tube 14) and the exhaust port to the pressing member 31 of the exhaust part 30 (the base end of the second mouth neck portion 11c) are the balloon 20. It is also preferable that a groove (not shown) is formed on the inner surface of the container body 11 around the body fluid introduction port and the exhaust port in order to prevent the container body 11 from being blocked by the container body 11. It is preferable that the groove surrounds, for example, the circumference of the body fluid introduction port and the circumference of the exhaust port in a circular manner.
It is also preferable that the suction side tube 14 is arranged near the corner of the container body 11. When the balloon 20 contracts, the first gap between the balloon 20 and the inner surface of the container body 11 is near the corner of the container body 11, so that it is near the corner (for example, near the discharge port 12a). By providing the suction side tube 14, it is possible to easily secure a space for drainage in the container body 11 from the start of the suction operation.
It is more preferable that a groove is formed around the body fluid introduction port and the exhaust port, and the suction side tube 14 is arranged near the corner of the container body 11.

In order to suck the drainage (body fluid) from the living body using the medical suction device 100, first, the suction side tube 14 is closed by the clamp member 15 and one end side is inserted into the living body (not shown). Connect the other end of the tube to the connector 16.
Next, the exhaust operation (pumping operation described above) for the pressing member 31 of the exhaust unit 30 is repeatedly performed, and the air inside the negative pressure container 10 is exhausted to the outside of the medical suction device 100, whereby the negative pressure container 10 Make the inside negative pressure.
When the squeezing member 31 of the exhaust unit 30 is contracted by the squeezing operation, the air in the squeezing member 31 is exhausted to the outside of the medical suction device 100 via the valve 33. When the squeezing operation is released and the squeezing member 31 is elastically restored, the air inside the container body 11 is introduced (intaken) into the squeezing member 31 via the one-side valve 32.
As the inside of the negative pressure container 10 becomes negative pressure, the balloon 20 inflates inside the container body 11 (see FIG. 2). Since the internal space of the balloon 20 communicates with the external space of the medical suction device 100 via the internal space of the holding cylinder portion 18b and the pores 18a, when the balloon 20 is inflated, the inside of the balloon 20 is formed. The outside air is introduced into. As described above, the balloon 20 comes into contact with the inner surface 11a of the container body 11 in the process from the natural state to the maximum expansion (see FIGS. 3 and 4).
A series of exhaust operations is completed by repeating the squeezing operation of the squeezing member 31 and its release until the elastic restoring force of the squeezing member 31 and the pressure inside the negative pressure container 10 are balanced.

Next, the drainage can be sucked from the living body by opening the suction side tube 14 by the clamp member 15. That is, the drainage is sucked into the container body 11 through a tube (not shown), a connector 16 and a suction side tube 14 in this order. The sucked drainage liquid is stored in the container body 11. In this way, for example, blood, exudate, and the like can be drained from the wound of the human body.
In the process of sucking the drainage liquid, the pressure inside the negative pressure vessel 10 (the pressure inside the container body 11) gradually approaches the atmospheric pressure. That is, the suction pressure gradually weakens. In addition, the balloon 20 gradually withers in the process of sucking the drainage.
In the exhaust operation, it is not always necessary to close the suction side tube 14 with the clamp member 15. Further, the suction can be interrupted by closing the suction side tube 14 with the clamp member 15 during the suction of the drainage liquid.

Here, in the case of the present embodiment, the oil 41 is applied to at least the central portion of each of the four side surfaces 53a to 56a of the negative pressure container 10 (container body 11).
As a result, the slipperiness is improved at least in the central portion of each of the four side surfaces 53a to 56a. In other words, on each of the four side surfaces 53a to 56a, the slipperiness of the portion mainly in contact with the balloon 20 is improved. Therefore, it is possible to more preferably suppress the balloon 20 from being caught on the inner surface 11a.
The central portion of each side surface 53a to 56a referred to here is a portion excluding at least the peripheral portion of each side surface 53a to 56a.

It is preferable that the oil 41 is applied to substantially the entire surface of each of the four side surfaces 53a to 56a of the negative pressure container 10 (container body 11).
As a result, the slipperiness is improved on substantially the entire surface of each of the four side surfaces 53a to 56a.
Therefore, even if the balloon 20 comes into contact with any part of the inner surface 11a of the negative pressure container 10 due to expansion, the balloon 20 is suppressed from being caught by the inner surface 11a, so that the balloon 20 can be smoothly expanded into a desired shape.
The entire surface of the side surfaces 53a to 56a referred to here means a flat portion excluding the boundary portion between the side surfaces 53a to 56a (the portion having the chamfered shape described above). At the boundary between the side surfaces 53a to 56a, the oil 41 may or may not be applied. More specifically, the oil 41 may or may be applied to the portion of the inner surface 11a corresponding to each of the voids 61 to 66 (the portion that does not come into contact with the maximally inflated balloon 20). It does not have to be.

More preferably, the oil 41 is applied to at least the central portion of the top surface 51a of the negative pressure container 10 (container body 11).
As a result, when the balloon 20 comes into contact with the top surface 51a, the balloon 20 is prevented from being caught by the top surface 51a due to the expansion of the balloon 20, so that the balloon 20 can be smoothly expanded into a desired shape.
The central portion of the top surface 51a referred to here means a peripheral edge portion of the first mouth neck portion 11b, that is, a portion of the opening of the first mouth neck portion 11b on the negative pressure container 10 side. , Excluding the boundary portion between the top surface 51a and each side surface 53a to 56a.
It is also preferable that the oil 41 is applied to at least the central portion of the bottom surface 52a of the negative pressure container 10 (container body 11).
As a result, when the balloon 20 comes into contact with the bottom surface 52a, the balloon 20 is suppressed from being caught by the bottom surface 52a, so that the balloon 20 can be smoothly expanded into a desired shape.

Further, in the case of the present embodiment, the fine powder 42 of the inorganic material is applied to the inner surface 11a of the negative pressure container 10 (container body 11).
As a result, the slipperiness of the inner surface 11a is further improved by the fine powder 42, so that the frictional force generated between the outer surface 21 and the inner surface 11a becomes smaller.
Therefore, since the balloon 20 is suppressed from being caught on the inner surface 11a inside the negative pressure container 10, the balloon 20 can be more satisfactorily displaced with respect to the inner surface 11a in accordance with its own expansion. Therefore, the balloon 20 can be expanded into a desired shape more smoothly.

It is preferable that the fine powder 42 is applied to at least the central portion of each of the four side surfaces 53a to 56a of the negative pressure container 10 (container body 11).
As a result, the slipperiness is further improved at least in the central portion of each of the four side surfaces 53a to 56a. In other words, on each of the four side surfaces 53a to 56a, the slipperiness of the portion mainly in contact with the balloon 20 is further improved.
Therefore, it is possible to more preferably suppress the balloon 20 from being caught on the inner surface 11a.
The central portion of each side surface 53a to 56a referred to here is a portion excluding at least the peripheral portion of each side surface 53a to 56a.

More preferably, the fine powder 42 is applied to substantially the entire surface of each of the four side surfaces 53a to 56a of the negative pressure container 10 (container body 11).
As a result, even if the balloon 20 comes into contact with any part of the inner surface 11a of the negative pressure container 10 in the process from the natural state to the maximum expansion, the balloon 20 is suppressed from being caught by the inner surface 11a. The balloon 20 can be smoothly inflated into a desired shape.
The entire surface referred to here means a flat portion excluding the boundary portion (the portion having the above-mentioned chamfered shape) between the side surfaces 53a to 56a on the side surfaces 53a to 56a. Therefore, the fine powder 42 may or may not be applied at the boundary between the side surfaces 53a to 56a. More specifically, on the inner surface 11a of the negative pressure container 10, the fine powder 42 is applied at a portion corresponding to each of the voids 61 to 68 (a portion that does not come into contact with the maximally inflated balloon 20). It may or may not be applied.

More preferably, the fine powder 42 is applied to at least the central portion of the top surface 51a of the negative pressure container 10 (container body 11).
As a result, when the balloon 20 is inflated, the balloon 20 is suppressed from being caught on the top surface 51a, so that the balloon 20 can be inflated to a desired shape more smoothly.
The central portion of the top surface 51a referred to here includes the peripheral edge portion of the first mouth neck portion 11b, the formation portion of the opening on the negative pressure container 10 side of the first mouth neck portion 11b, and the top surface 51a. It is a portion excluding the boundary portion with each side surface 53a to 56a.
It is also preferable that the fine powder 42 is applied to at least the central portion of the bottom surface 52a of the negative pressure container 10 (container body 11).
As a result, the balloon 20 is suppressed from being caught on the bottom surface 52a, so that the balloon 20 can be expanded more smoothly into a desired shape.

In the case of the present embodiment, it is preferable that the oil 41 is applied to at least one of the side surfaces 53a to 56a and the top surface 51a, and the fine powder 42 is applied to the surface and the application region of the oil 41. ..

In the present invention, the method of applying the oil 41 to the inner surface 11a of the negative pressure container 10 is not particularly limited, but for example, using a coating tool (not shown) such as a brush, the oil 41 is applied to the inner surface 11a of the negative pressure container 10. Can be applied.
Similarly, in the present invention, the method of applying the fine powder 42 to the inner surface 11a of the negative pressure container 10 is not particularly limited, but the fine powder 42 can be applied to the inner surface 11a by sprinkling the fine powder 42 on the inner surface 11a. can.
Further, in the present invention, a mixture obtained by mixing the oil 41 and the fine powder 42 may be applied to the inner surface 11a using a coating tool (not shown) such as a brush.
Further, in the present invention, at least the oil 41 may be applied to the inner surface 11a of the negative pressure container 10, and the fine powder 42 may not be applied to the inner surface 11a, for example.
For example, the oil 41 and the fine powder 42 are applied to the outer surface 21 of the balloon 20 in advance, and the balloon 20 is brought into contact with the inner surface 11a of the negative pressure container 10 to transfer (apply) the oil 41 and the fine powder 42 to the inner surface 11a. ) May.

As shown in FIGS. 5 (a) to 5 (d), the oil 41 is applied in close contact with, for example, the inner surface 11a in a film form.
Further, on the inner surface 11a, the position of the fine powder 42 with respect to the oil 41 is not particularly limited, and the fine powder 42 may be satisfactorily applied to the inner surface 11a.
More specifically, for example, as shown in FIG. 5A, even if the fine powder 42 covered with the oil 41 and the fine powder 42 exposed to the outside from the surface of the oil 41 are mixed. Alternatively, for example, as shown in FIG. 5B, the entire fine powder 42 may be entirely covered with the oil 41. Further, for example, as shown in FIG. 5C, all the fine powders 42 or some of the fine powders 42 may be in contact with the inner surface 11a or are not in contact with the inner surface 11a. You may. Further, for example, as shown in FIG. 5D, a part of all the fine powder 42 may be exposed to the outside from the surface of the oil 41, and the other part of the fine powder 42 may be covered with the oil 41. ..
That is, on the inner surface 11a, all the fine powder 42 or a part of the fine powder 42 may be in contact with the inner surface 11a or may not be in contact with the inner surface 11a.

Further, in the case of the present embodiment, the outer surface 21 of the balloon 20 is coated with the same type of oil 41 as that applied to the inner surface 11a of the negative pressure container 10.
As a result, since the oil 41 is applied, the slipperiness of the outer surface 21 of the balloon 20 becomes good. Therefore, when the balloon 20 is inflated, the balloon 20 is more preferably suppressed from being caught on the inner surface 11a, so that the balloon 20 can be inflated to a desired shape more easily.
Further, by using the same type of oil 41 as applied to the inner surface 11a, the ease of manufacturing the medical suction device 100 according to the present embodiment is improved. However, the oil 41 applied to the outer surface 21 may be an oil different from that applied to the inner surface 11a.
It is preferable that the oil 41 is applied to substantially the entire surface of the outer surface 21 of the balloon 20, for example. As a result, it is possible to preferably prevent the balloon 20 from being caught by the inner surface 11a regardless of which portion of the balloon 20 comes into contact with the inner surface 11a.
However, the oil 41 may be applied to a part of the outer surface 21 of the balloon 20 (preferably a portion mainly in contact with the inner surface 11a).

Further, in the case of the present embodiment, the outer surface 21 of the balloon 20 is coated with the same kind of fine powder 42 as that applied to the inner surface 11a of the negative pressure container 10.
As a result, since the fine powder 42 is applied, the slipperiness of the outer surface 21 of the balloon 20 is further improved. Therefore, when the balloon 20 is inflated, the balloon 20 is more preferably suppressed from being caught by the inner surface 11a, so that the balloon 20 can be inflated to a desired shape more smoothly.
Further, by using the fine powder 42 of the same type as that applied to the inner surface 11a, the ease of manufacturing the medical suction device 100 according to the present embodiment is improved. However, the fine powder 42 applied to the outer surface 21 may be a fine powder different from that applied to the inner surface 11a.
It is preferable that the fine powder 42 is applied to substantially the entire surface of the outer surface 21 of the balloon 20, for example. As a result, it is possible to preferably prevent the balloon 20 from being caught by the inner surface 11a regardless of which portion of the balloon 20 comes into contact with the inner surface 11a.
However, the fine powder 42 may be applied to a part of the outer surface 21 of the balloon 20 (preferably a portion mainly in contact with the inner surface 11a).

In the present invention, the method of applying the oil 41 to the outer surface 21 of the balloon 20 is not particularly limited, but for example, the oil 41 can be applied to the outer surface 21 by immersing the balloon 20 in the oil 41.
Further, in the present invention, the method of applying the fine powder 42 to the outer surface 21 of the balloon 20 is not particularly limited, but for example, the fine powder 42 is applied to the outer surface 21 by sprinkling the fine powder 42 on the outer surface 21 of the balloon 20. be able to.
In the present invention, at least the oil 41 may be applied to the outer surface 21 of the balloon 20, and for example, the fine powder 42 may not be applied to the outer surface 21.

As shown in FIGS. 6 (a) to 6 (d), on the outer surface 21 of the balloon 20, the oil 41 is applied in close contact with, for example, the outer surface 21 in a film form.
Further, on the outer surface 21, the position of the fine powder 42 with respect to the oil 41 is not particularly limited, and the fine powder 42 may be satisfactorily applied to the outer surface 21.
More specifically, for example, as shown in FIG. 6A, even if the fine powder 42 covered with the oil 41 and the fine powder 42 exposed to the outside from the surface of the oil 41 are mixed. Alternatively, for example, as shown in FIG. 6B, the entire fine powder 42 may be entirely covered with the oil 41. Further, for example, as shown in FIG. 6C, all the fine powders 42 or some of the fine powders 42 may be in contact with the outer surface 21 or are not in contact with the outer surface 21. You may. Further, for example, as shown in FIG. 6D, a part of all the fine powder 42 may be exposed to the outside from the surface of the oil 41, and the other part of the fine powder 42 may be covered with the oil 41. ..
That is, on the outer surface 21, all the fine powders 42 or some of the fine powders 42 may be in contact with the outer surface 21 or may not be in contact with the outer surface 21.

Examples of the oil 41 include silicone oils such as dimethyl silicone oil. However, the oil 41 is not limited to silicone oil, and may be ester oil, fluorine oil, vegetable oil such as olive oil or castor oil, animal oil such as liquid lanolin, or the like.
Further, the oil 41 may contain, for example, an additive or the like. Further, the mode of the oil 41 is not limited to the semi-solid grease, and may be a liquid.

Further, the fine powder 42 is preferably an inorganic material, and examples of the inorganic material include finely pulverized fine talc (talcum powder). As an example, the finely pulverized talc is, for example, hydrous magnesium silicate (average particle size 9.0 μm), has a monoclinic crystal structure, and has a Mohs hardness of 1. However, the oil 41 is not limited to finely pulverized talc, and may be silica, calcium carbonate, silicone powder, cellulose powder, acrylic resin powder, nylon powder or the like.

Further, in the medical suction device 100 according to the present embodiment, the arrangement of the exhaust portion 30 on the top surface of the container body 11, the volume of the negative pressure container 10, the volume of the container body 11, the outer surface 21 of the balloon 20 and the container body 11 The presence / absence of oil coating on the inner surface 11a, the coating amount thereof, the dimensions of the pores 18a, the presence / absence of talc coating on the outer surface of the balloon 20, the coating amount thereof, and the like can be appropriately set.

The present invention is not limited to the above-described embodiment, and includes various modifications, improvements, and the like as long as the object of the present invention is achieved.
For example, in the above embodiment, the negative pressure container 10 is composed of a single container, but the negative pressure container 10 is configured to include two containers, a first container and a second container. You may.
When the negative pressure container 10 includes the first container and the second container, for example, the first container is provided with the cap 18, the balloon 20, and the exhaust portion 30, and the second container has the suction side tube 14 and the connector 16. It is possible to have a configuration in which the discharge port 12a is formed as well as being provided. The medical suction device 100 in this case includes, for example, a connecting tube that allows the internal space of the first container and the internal space of the second container to communicate with each other. Then, the balloon 20 is inflated inside the first container, and the drainage is stored in, for example, the second container.
Further, the negative pressure container 10 may be configured to include three or more containers communicating with each other.

This embodiment includes the following technical ideas.
(1) A medical suction device that sucks drainage by negative pressure.
Negative pressure container and
An exhaust unit connected to the negative pressure container, which is exhausted from the inside to the outside when contracted by a squeezing operation and is taken in from the negative pressure container when elastically restored.
The balloon placed in the negative pressure container and
With
The inside of the balloon communicates with the outside air through the pores formed in the negative pressure container.
The balloon is inflated as the negative pressure container becomes negative pressure.
A medical suction device in which oil is applied to the inner surface of the negative pressure container.
(2) The medical suction device according to (1), wherein the negative pressure container is formed in a rectangular parallelepiped shape, and the oil is applied to at least the central portion of each of the four side surfaces.
(3) The medical suction device according to (2), wherein the oil is applied to substantially the entire surface of each of the four side surfaces.
(4) The medical suction device according to any one of (1) to (3), wherein the negative pressure container is formed in a rectangular parallelepiped shape, and the oil is applied to at least the central portion of the top surface.
(5) The medical suction according to any one of (1) to (4), wherein the outer surface of the balloon is coated with the same type of oil as that applied to the inner surface of the negative pressure container. Instrument.
(6) The medical suction device according to any one of (1) to (5), wherein a fine powder of an inorganic material is coated on the inner surface of the negative pressure container.
(7) The medical suction device according to (6), wherein the negative pressure container is formed in a rectangular parallelepiped shape, and the fine powder is applied to at least the central portion of each of the four side surfaces.
(8) The medical suction device according to (7), wherein the fine powder is applied to substantially the entire surface of each of the four side surfaces.
(9) The medical suction device according to (7) or (8), wherein the negative pressure container is formed in a rectangular parallelepiped shape, and the fine powder is applied to at least the central portion of the top surface.
(10) The medical use according to any one of (6) to (9), wherein the outer surface of the balloon is coated with the fine powder of the same type as that applied to the inner surface of the negative pressure container. Suction device.

10 Negative pressure container 11 Container body 11a Inner surface 11b 1st mouth neck 11c 2nd mouth neck 12a Discharge port 14 Suction side tube 15 Clamp member 16 Connector 16a Suction port 17 Discharge port cap 18 Cap 18a Pore 18b Holding cylinder 20 Balloon 21 Outer surface 30 Exhaust part 31 Squeezing member 31c Lower mouth neck 31d Upper mouth neck 32, 33 One valve 41 Oil 42 Fine powder 51 Top plate 51a Top 52 Bottom plate 52a Bottom 53 to 56 Side 53a to 56a Side 61 ~ 66 Void 100 Medical suction device

Claims (10)

A medical suction device that sucks drainage by negative pressure.
Negative pressure container and
An exhaust unit connected to the negative pressure container, which is exhausted from the inside to the outside when contracted by a squeezing operation and is taken in from the negative pressure container when elastically restored.
The balloon placed in the negative pressure container and
With
The inside of the balloon communicates with the outside air through the pores formed in the negative pressure container.
The balloon is inflated as the negative pressure container becomes negative pressure.
A medical suction device in which oil is applied to the inner surface of the negative pressure container. The medical suction device according to claim 1, wherein the negative pressure container is formed in a rectangular parallelepiped shape, and the oil is applied to at least a central portion of each of the four side surfaces. The medical suction device according to claim 2, wherein the oil is applied to substantially the entire surface of each of the four side surfaces. The medical suction device according to any one of claims 1 to 3, wherein the negative pressure container is formed in a rectangular parallelepiped shape, and the oil is applied to at least a central portion of the top surface. The medical suction device according to any one of claims 1 to 4, wherein the outer surface of the balloon is coated with the same type of oil as that applied to the inner surface of the negative pressure container. The medical suction device according to any one of claims 1 to 5, wherein a fine powder of an inorganic material is coated on the inner surface of the negative pressure container. The medical suction device according to claim 6, wherein the negative pressure container is formed in a rectangular parallelepiped shape, and the fine powder is applied to at least a central portion of each of the four side surfaces. The medical suction device according to claim 7, wherein the fine powder is applied to substantially the entire surface of each of the four side surfaces. The medical suction device according to claim 7 or 8, wherein the negative pressure container is formed in a rectangular parallelepiped shape, and the fine powder is applied to at least the central portion of the top surface. The medical suction device according to any one of claims 6 to 9, wherein the outer surface of the balloon is coated with the fine powder of the same type as that applied to the inner surface of the negative pressure container.

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