WO2019107299A1

WO2019107299A1 - Vacuum generation device

Info

Publication number: WO2019107299A1
Application number: PCT/JP2018/043331
Authority: WO
Inventors: 泰弘橋本; 一秋宮田; 壮一郎西釜; 秀一米永; 浩林
Original assignee: アルバック機工株式会社
Priority date: 2017-11-29
Filing date: 2018-11-26
Publication date: 2019-06-06
Also published as: JP6616051B2; TW201936218A; CN111373148A; TWI784091B; KR20200071136A; KR102318140B1; JPWO2019107299A1

Abstract

A vacuum generation device according to one aspect of the present invention is provided with a case, a vacuum pump, and a storage battery. The housing has: a top surface section having a handle part and a pipping terminal connectable to a suction mechanism; and a bottom surface section. The vacuum pump has first and second pump chambers that are accommodated in the housing and connected to the piping terminal in parallel, and is installed on the bottom surface section. The storage battery is accommodated in the housing and supplies power to the vacuum pump.

Description

Vacuum generator

The present invention relates to, for example, a portable vacuum generator that can be used as a negative pressure source of a medical suction device.

In medical facilities equipped with a large-scale fixed suction supply facility, a piping terminal (outlet) in communication with the suction supply facility is installed on the wall of a patient's room or treatment room, and a suction device is attached to this piping terminal. It is connected to obtain the negative pressure necessary for suction. On the other hand, when transporting a patient who needs suction treatment, it is necessary to separately prepare a suction device equipped with a negative pressure source because negative pressure can not be obtained from the piping terminal.

For example, Patent Document 1 discloses an endoscope apparatus provided with a suction container and a suction tube connected to a suction device, and Patent Document 2 includes a pump assembly housing in which a pump assembly is disposed; A portable suction pump unit is disclosed comprising a container for collecting a patient's bodily fluid drawn through a suction tube.

JP 2000-245695 A Patent No. 5416805 gazette

In recent years, securing of a suction source under various situations where it is not possible to use the suction supply facility of the facility, such as at the time of disaster, pre-hospital emergency medical care, or at the time of patient transport in a hospital, has become a problem. For example, in the case where a suction source is installed and used on a movable body such as a stretcher, the suction source is preferably compact. In addition, it is necessary to prevent the dropout and breakage of the suction tube due to the contact with a nurse or an assistant working around the moving body.

Furthermore, when the suction source is applied to acupuncture suction application, a pump having a relatively large flow rate is required as a vacuum pump. If a large vacuum pump is adopted to meet such a demand, there is a problem that it becomes difficult to miniaturize the suction source itself.

In view of the circumstances as described above, it is an object of the present invention to provide a vacuum generating device which can constitute a small-sized suction source with a large flow rate.

In order to achieve the above-mentioned object, a vacuum generator concerning one form of the present invention comprises a case, a vacuum pump, and a storage battery.
The housing has a top surface portion having a piping terminal connectable to a suction device and a handle portion, and a bottom surface portion.
The vacuum pump is accommodated in the housing and has first and second pump chambers connected in parallel to the piping terminal, and is installed at the bottom portion.
The storage battery is accommodated in the housing and supplies power to the vacuum pump.

The above-mentioned vacuum generator includes a storage battery, so it does not need a separate power source and can supply a desired negative pressure even while moving.
Further, since the piping terminal is provided on the top surface portion of the housing, the suction tube can be prevented from extending to the side of the housing.
Furthermore, since the vacuum pump has the first and second pump chambers connected in parallel to the piping terminal, the pump performance of a relatively large flow rate can be suppressed while suppressing the increase in pump size. You can get

The vacuum generating device may further include an intake filter and a filter chamber.
The intake filter is connected between the piping terminal and the first and second pump chambers. The filter chamber is disposed between the top surface portion and the vacuum pump, and accommodates the intake filter.

The housing may further include a front surface and a rear surface, and the storage battery and the filter chamber may be disposed closer to the rear surface or the bottom surface than the front surface.

The rear or bottom portion may have an open / close door that can expose at least one of the filter chamber and the storage battery to the outside.
Thereby, workability | operativity of replacement | exchange of an air-intake filter and attachment or detachment of a storage battery can be improved.

The vacuum generator may further include an exhaust filter. The exhaust filter is connected to the first and second pump chambers, and is accommodated in the filter chamber.

The vacuum pump may be a diaphragm pump.
The diaphragm pump is suitable as a medical vacuum generator because of its low dust and relatively quiet operation.

The housing may further include a display meter provided on the top surface portion to display the remaining amount of the storage battery.

The vacuum generator may further comprise a fixture. The fixture has a storage portion capable of storing the housing, and is configured to be attachable to a movable body.
This makes it possible to easily attach the vacuum generator to a movable body such as a stretcher.

As described above, according to the present invention, the suction tube can be mounted on a movable body such as a stretcher without extending it around, and a small-sized, high-flow suction source can be configured.

It is a front perspective view showing the whole vacuum generator concerning one embodiment of the present invention. It is a rear perspective view of the said vacuum generation apparatus. It is a front perspective view which shows the internal structure of the said vacuum generation apparatus. It is a rear perspective view of the said vacuum generation apparatus. It is a block diagram which shows the structure of the said vacuum generation apparatus. It is a schematic perspective view which shows the application example of the said vacuum generation apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a front perspective view showing an entire vacuum generating apparatus 100 according to an embodiment of the present invention, and FIG. 2 is a rear perspective view thereof. FIG. 3 is a front perspective view showing the internal structure of the vacuum generation device 100, and FIG. 4 is a rear perspective view thereof. FIG. 5 is a block diagram showing the configuration of the vacuum generator 100. As shown in FIG.

In FIGS. 1 to 4, the X-axis, the Y-axis and the Z-axis indicate three axis directions orthogonal to one another, and the X-axis direction is the longitudinal direction (depth direction) and the Y-axis direction is the lateral direction The Z-axis direction corresponds to the vertical direction (height direction).

The vacuum generating apparatus 100 according to the present embodiment includes a housing 10, and a vacuum pump 40, a storage battery 50, a control panel 80, and the like accommodated in the housing 10, respectively. The vacuum generation device 100 is configured, for example, as a portable negative pressure source for medical instruments such as aspiration of sputum.

The housing 10 constitutes an external appearance of the vacuum generating apparatus 100, and is formed in a substantially rectangular parallelepiped shape having a top surface 11, a bottom 12, a front surface 13, a rear surface 14, and two

side surfaces

15, 16. The housing 10 is made of a metal material or a plastic material.
The size of each part of the housing 10 is not particularly limited. For example, in the present embodiment, the dimension in the X-axis direction is about 130 mm, the dimension in the Y-axis direction is about 230 mm, and the dimension in the Z-axis direction is about 250 mm.

The top surface portion 11 has a piping terminal 21 and a handle portion 22.
The piping terminal 21 is configured to be connectable to a tip (adapter plug) of a suction tube of a suction device (not shown). In this embodiment, although two types of

piping terminal

21A, 21B which differ in a standard are provided, in order to prevent a misconnection, you may provide only any one.

The handle portion 22 is an area gripped by the user when carrying the vacuum generator 100. The handle portion 22 has a recess portion into which the user's finger can enter and a hook portion provided at one edge (the front in the illustrated example) of the edge portion. Not limited to this, the handle portion 22 may be configured by a lever, a grip, or the like protruding from the top surface portion 11.

The top panel 11 is further provided with a power switch 23, a display meter 24 for displaying the remaining voltage of the storage battery 50, a check button 25 for activating the display meter 24, and the like. The display meter 24 has, for example, a plurality of segments, and is configured such that the number of segments to be lit increases as the residual voltage increases. Instead of this, the display total 24 may display the remaining usable time from the present time and the like.

The rear surface portion 14 is provided with two open /

close doors

33 and 34 arranged in line in the vertical direction. The open /

close doors

33 and 34 are configured to be rotatable around the Z axis via hinges H attached to one side face 16 side.

Through

holes

31 and 32 for communicating the inside and the outside of the housing 10 are provided in the

side surface parts

15 and 16, respectively. The through holes 31 and 32 mainly have a function as an exhaust window for discharging the exhaust gas of the vacuum pump 40 to the outside of the housing 10 and a function as a cooling window for the vacuum pump 40.

As shown in FIGS. 3 and 4, the vacuum pump 40 is installed on the bottom surface portion 12 of the housing 10 via a vibration isolation rubber 44. The vacuum pump 40 commonly drives the first pump portion 41 having the first pump chamber 410, the second pump portion 42 having the second pump chamber 420, and the first and second pump portions 42. And a dual head suction pump having a motor portion 43.

The vacuum pump 40 is composed of a diaphragm pump. The diaphragm pump is particularly suitable for medical use because it has an advantage of low dust and low noise as compared with a piston pump or the like.

The motor unit 43 is, for example, a DC motor, and operates the first and

second pump units

41 and 42 by being driven at a predetermined rotation speed. Fans (not shown) are attached to both end portions of the rotation shaft of the motor unit 43. The fan cools the first and

second pump portions

41 and 42 with air taken in via the fan covers 45 and 46 attached to both sides of the vacuum pump 40. The through holes 31 and 32 attached to the side surfaces 15 and 16 of the housing 10 are disposed at positions facing the fan covers 45 and 46, respectively.

Here, since the first and

second pump chambers

410 and 420 are arranged in the width direction (Y-axis direction) of the housing 10, the first and

second pump chambers

410 and 420 can be accommodated in the housing 10 in a compact manner. Further, by arranging the first and

second pump chambers

410 and 420 as described above, a sufficient space can be secured between the top surface portion 11 of the housing 10 and the vacuum pump 40, which will be described later. The filter chamber S1 can be installed efficiently.

The intake ports of the first and

second pump chambers

410 and 420 are in communication with each other, and are connected in parallel to the piping terminal 21 via an intake line. The intake line has a manifold 60, a first intake pipe 61, a second intake pipe 62, an intake filter 71 and a third intake pipe 63.

The manifold 60 causes the pipe terminal 21 and the first intake pipe 61 to communicate with each other. The second intake pipe 62 and the intake filter 71 are disposed inside a filter chamber S <b> 1 installed between the top surface portion 11 of the housing 10 and the vacuum pump 40. The intake filter 71 is for collecting dust in the gas drawn from the piping terminal 21 to the first and

second pump chambers

410 and 420 to prevent environmental pollution, and the second intake pipe 62 is configured to be removable (replaceable).

The exhaust ports of the first and second pump chambers communicate with each other, and are connected to the exhaust filter 72 via the exhaust pipe 64. The exhaust filter 72 is disposed inside the filter chamber S1, and is configured to be attachable to and detachable (replaceable) from the exhaust pipe 64.

The filter chamber S1 is disposed closer to the rear surface 14 than the front surface 13 of the housing 10, and by opening the first opening / closing door 33 provided on the rear surface 14, the filter from the outside of the housing 10 It is configured to be accessible to the room S1. As a result, replacement work of the intake filter 71 and the exhaust filter 72 becomes easy.

The storage battery 50 is composed of a rechargeable secondary battery that supplies power to the vacuum pump 40. Storage battery 50 is configured of a suitable storage battery such as a lithium ion battery, a nickel hydrogen battery, or the like. Although the rated voltage of the storage battery 50 is 24 V in the present embodiment, it is of course not limited thereto.

The storage battery 50 is attached to a battery holder S2 disposed closer to the rear surface 14 or the bottom surface 12 than the front surface 13 of the housing 10. The battery holder S2 is provided with a terminal portion (not shown) connected to the positive electrode and the negative electrode of the storage battery 50. The battery holder S2 is formed between the rear surface portion 14 or the bottom surface portion 12 and the vacuum pump 40, and by opening the second opening / closing door 34 provided on the rear surface portion 14, the battery holder S2 is from outside the housing 10. The battery holder S2 is configured to be accessible. Thereby, replacement work of storage battery 50 becomes easy.

Control panel 80 is disposed to face the inner surface of top surface portion 11 of housing 10, and is electrically connected to battery holder S2 (storage battery 50) via first wiring member 81. The control panel 80 is electrically connected to the motor unit 43 of the vacuum pump 40 via the second wiring member 82. Furthermore, the control panel 80 is connected to an AC power terminal (DC jack) 83 a attached to the rear surface portion 14 of the housing 10 via the third wiring member 83. AC power supply terminal 83a is connectable to a commercial power supply via an adapter (not shown), and is used when charging storage battery 50 or driving vacuum generator 100 by the commercial power supply.

As shown in FIG. 5, the control panel 80 is electrically connected to the power switch 23, the display meter 24 and the check button 25. The control panel 80 has a drive circuit 801 that drives the vacuum pump 40 and a control circuit 802 that controls the lighting of the indicator 24. In response to the input operation of the power switch 23, the control panel 80 lights the lamp portion in the power switch 23 and drives the vacuum pump 40.

By driving the vacuum pump 40, the inside of a suction container (not shown) connected to the piping terminal 21 is exhausted, and the inside of the suction container is maintained at a reduced pressure atmosphere of a predetermined pressure (for example, 37 kPa).

Here, since the first and

second pump chambers

410 and 420 are connected in parallel to the piping terminal 21, they have a relatively large flow rate as compared with the case where they are connected in series. Suction performance (for example, 18 liters per minute) can be secured. Therefore, without using a large vacuum pump, for example, the suction performance required for suctioning a sputum can be stably ensured.

According to the present embodiment, since the storage battery 50 is built in, no external power supply such as a commercial power supply or a generator is required. For this reason, a desired negative pressure can be stably supplied even at the time of disaster, pre-hospital emergency medical care, or at the time of patient transportation.

Furthermore, in the present embodiment, since the display meter 24 for displaying the residual voltage of the storage battery 50 is provided on the top surface portion 11 of the housing 10, the determination of the charge timing of the storage battery 50 becomes easy. Further, by configuring the indicator 24 to operate (light up) only when the check button 25 is pressed, the reduction in the power consumption of the storage battery 50 is suppressed as compared with the case where the indicator 24 is always operated. Can.

Furthermore, according to the present embodiment, since the piping terminal 21, the handle portion 22, the power switch 23, the indicator 24, the check button 25 and the like are collectively arranged on the top surface portion 11 of the housing 10, operability and Workability can be improved. In particular, since the suction device is inserted into the vacuum generation device 100 in the vertical direction by providing the piping terminal 21 on the top surface portion 11, a suction tube or the like protrudes to the side of the housing 10 Can be blocked.

FIG. 6 is a schematic view showing an example of mounting of the vacuum generator 100 on the stretcher 1 for transporting a patient as an application example of the present embodiment. The vacuum generator 100 is attached to the stretcher 1 via the attachment 150. The fixture 150 is a box having a housing portion 151 capable of housing the vacuum generating apparatus 100 (the housing 10), and can be attached to the gantry 2 of the stretcher 1 via an appropriate engagement mechanism such as the hook portion 152 or the like. Configured The configuration of the fixture 150 is not particularly limited, and typically, the holding unit 153 includes a ventilation unit 154 that communicates the inside and the outside of the accommodation unit 151.

Since the vacuum generator 100 of this embodiment is small and has low dust and low noise, the fixture 150 can be installed on the head side of the patient who can be placed on the stretcher 1. Thus, the vacuum generator 100 can be installed in the vicinity of the suction device 90 attached to the patient's oral cavity or the like, so that the suction tube 92 connecting the patient and the suction container 91 or the suction container 91 It is particularly advantageous when there is a restriction on the length of the suction tube 93 connecting the piping terminal 21. Furthermore, since the handle portion 22 is provided on the top surface portion 11 of the housing 10, the vacuum generator 100 can be easily attached to and detached from the fixture 150.

The suction container 91 is installed at an appropriate height position of the pole 3 attached to the stretcher 1. For this reason, since the space around the stretcher 1 can be secured, the conveyance operability of the stretcher 1 and interference with a nurse or a helper who works around the stretcher 1 can be avoided.

Further, according to the vacuum generating apparatus 100 of the present embodiment, since the piping terminal 21 is disposed on the top surface portion 11 of the housing 10, the suction tube 93 is prevented from extending around the stretcher 1. . For this reason, it is possible to avoid, as much as possible, that the suction tube 93 is pulled by contact with a nurse or a helper who works around the stretcher 1 and is dropped from the suction container 91 or the piping terminal 21.

Furthermore, since the suction container 91 is configured separately from the vacuum generator 100, disposal of the suctioned object after use of the suction device 90 is facilitated, and the vacuum generator 100 does not need to be disinfected or cleaned.

As mentioned above, although embodiment of this invention was described, this invention is not limited only to the above-mentioned embodiment, of course, a various change can be added.

For example, although the above embodiment demonstrated the example which the vacuum generation apparatus 100 is mounted to the stretcher 1, it is not restricted to this, It can mount also on mobile bodies, such as a wheelchair, an emergency vehicle, and a helicopter.

In the above embodiments, the vacuum generation device is configured as a negative pressure source of a sputum suction device, but the present invention is not limited to this, and the present invention is not limited to this. It is applicable. Furthermore, the invention is applicable to other uses besides medical use.

DESCRIPTION OF SYMBOLS 1 ... Stretcher 10 ... Housing | casing 11 ... Top surface part 12 ... Bottom part 13 ... Front part 14 ... Back surface

part

21A, 21B, 21 ... Piping terminal 22 ... Handle part 23 ... Power switch 24 ... Display gauge 25 ... Check

button

33, 34 ... opening and closing door 40 ... vacuum pump 410 ... first pump chamber 420 ... second pump chamber 43 ... motor unit 50 ... storage battery 71 ... intake filter 72 ... exhaust filter 80 ... control panel 90 ... suction tool 100 ... vacuum generator 150 ... mounting tool S 1 ... filter chamber S 2 ... battery holder

Claims

A case having a top surface portion having a piping terminal connectable to a suction device and a handle portion, and a bottom surface portion;
A vacuum pump having first and second pump chambers housed in the housing and connected in parallel to the piping terminal, and installed on the bottom surface portion;
A storage battery accommodated in the housing and supplying power to the vacuum pump.
The vacuum generator according to claim 1, wherein
An intake filter connected between the piping terminal and the first and second pump chambers;
A vacuum generating apparatus, further comprising: a filter chamber disposed between the top surface portion and the vacuum pump and containing the intake filter.
The vacuum generator according to claim 2, wherein
The housing further includes a front surface portion and a rear surface portion,
The storage battery and the filter chamber are disposed closer to the rear surface portion or the bottom surface than the front surface portion.
The vacuum generator according to claim 3, wherein
The rear face portion includes an open / close door capable of exposing at least one of the filter chamber and the storage battery to the outside. Vacuum generation apparatus.
The vacuum generator according to any one of claims 2 to 4, wherein
A vacuum generator further comprising an exhaust filter connected to the first and second pump chambers and housed in the filter chamber.
The vacuum generator according to any one of claims 1 to 5, wherein
The vacuum pump is a diaphragm pump.
The vacuum generating device according to any one of claims 1 to 6, wherein
The vacuum generator according to claim 1, wherein the housing further includes a display meter provided on the top surface portion to display the remaining amount of the storage battery.
The vacuum generator according to any one of claims 1 to 7, wherein
A vacuum generation device, further comprising a fixture configured to be attachable to a movable body, having a storage portion capable of storing the housing.