KR102318140B1 - vacuum generator - Google Patents

Abstract

A vacuum generator according to one aspect of the present invention includes a housing, a vacuum pump, and a storage battery. The housing has an upper surface portion having a pipe terminal connectable to the suction mechanism and a handle portion, and a lower surface portion. The vacuum pump is accommodated in the housing, has first and second pump chambers connected in parallel to the pipe terminal, and is installed on the bottom surface portion. 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 for a medical suction device.

In a medical facility equipped with a large-scale fixed suction supply facility, a piping terminal (outlet) that communicates with the suction supply facility is installed on the wall of the ward or treatment room, and a suction device is connected to this piping terminal to reduce the negative pressure required for suction. to get it On the other hand, when conveying a patient in need of suction treatment, since negative pressure cannot be obtained through the piping terminal, it is necessary to separately prepare a suction mechanism equipped with a negative pressure source.

For example, Patent Document 1 discloses an endoscope apparatus having a suction container and a suction tube connected to a suction machine, and Patent Document 2 discloses a pump assembly housing for arranging the pump assembly therein, and a patient suctioned through the suction tube. A transportable suction pump unit having a container for collecting bodily fluid is disclosed.

Japanese Patent Laid-Open No. 2000-245695 Japanese Patent No. 5416805

In view of the above circumstances, it is an object of the present invention to provide a vacuum generator which is compact and can constitute a suction source with a large flow rate.

In order to achieve the above object, a vacuum generator according to one aspect of the present invention includes a housing, a vacuum pump, and a storage battery.

The housing has an upper surface portion having a pipe terminal connectable to the suction mechanism and a handle portion, and a lower surface portion.

The vacuum pump is accommodated in the housing, has first and second pump chambers connected in parallel to the pipe terminal, and is installed on the bottom surface portion.

The storage battery is accommodated in the housing and supplies power to the vacuum pump.

Since the vacuum generator includes a storage battery, a desired negative pressure can be supplied while moving without requiring a separate power source.

Further, since the piping terminal is provided on the upper surface of the housing, it is possible to prevent the suction tube from extending to the side of the housing.

Moreover, since the vacuum pump has the 1st and 2nd pump chambers connected in parallel with respect to a piping terminal, the pump performance of a comparatively large flow rate can be acquired, suppressing enlargement of a pump size.

The vacuum generator may further include an intake filter and a filter chamber.

The intake filter is connected between the pipe terminal and the first and second pump chambers. The filter chamber is disposed between the upper surface portion and the vacuum pump, and accommodates the intake filter.

The housing may further have a front portion and a rear portion, and the storage battery and the filter chamber may be disposed on the rear surface side or the bottom surface side rather than the front portion.

The rear part or the bottom part may have an opening/closing door capable of exposing at least one of the filter chamber and the storage battery to the outside.

Thereby, the workability|operativity of replacement|exchange of an intake filter and attachment/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.

Since the diaphragm pump is low dust and the operation sound is also relatively quiet, it is suitable as a vacuum generator for medical use.

The housing may further have an indicator installed on the upper surface portion to display the remaining amount of the storage battery.

The vacuum generator may further include a mounting tool. The mounting tool has a receiving portion capable of accommodating the housing, and is configured to be mounted on a movable body.

This makes it possible to easily mount the vacuum generator to a moving object such as a stretcher.

As described above, according to the present invention, it is possible to mount the suction tube on a moving object such as a stretcher without extending the suction tube around it, so that a small and large flow rate suction source can be configured.

BRIEF DESCRIPTION OF THE DRAWINGS It is a front perspective view which shows the whole of the vacuum generator which concerns on 1 Embodiment of this invention.
2 is a rear perspective view of the vacuum generator.
3 is a front perspective view showing the internal structure of the vacuum generator.
4 is a rear perspective view of the vacuum generator.
5 is a block diagram showing the configuration of the vacuum generator.
6 is a schematic perspective view showing an application example of the vacuum generator.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described, referring drawings.

Fig. 1 is a front perspective view showing the whole of a vacuum generator 100 according to an embodiment of the present invention, and Fig. 2 is a rear perspective view thereof. 3 is a front perspective view showing the internal structure of the vacuum generator 100, and FIG. 4 is a rear perspective view thereof. 5 is a block diagram showing the configuration of the vacuum generator 100 .

1 to 4 , the X-axis, Y-axis, and Z-axis represent three directions orthogonal to each other, and the X-axis direction is the front-back direction (depth direction), the Y-axis direction is the left-right direction (width direction), and the Z-axis direction. Each corresponds to this vertical direction (height direction).

The vacuum generator 100 of the present embodiment includes a housing 10 , a vacuum pump 40 , a storage battery 50 , a control panel 80 , and the like respectively housed in the housing 10 . The vacuum generator 100 is configured as a portable negative pressure source for medical instruments such as sputum suction, for example.

The housing 10 constitutes the exterior of the vacuum generator 100, and has an upper surface portion 11, a lower surface portion 12, a front portion 13, a rear portion 14, and two side portions 15 and 16. It is formed in a substantially rectangular parallelepiped shape. 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, and in this embodiment, for example, 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 upper surface portion 11 has a pipe terminal 21 and a handle portion 22 .

The piping terminal 21 is configured to be connectable to the distal end (adapter plug) of the suction tube of the suction mechanism not shown in the drawing. In this embodiment, although two types of piping terminals 21A and 21B with different standards are provided, in order to prevent erroneous connection, only either one may be provided.

The handle portion 22 is an area gripped by a user when carrying the vacuum generator 100 . The handle portion 22 has a concave portion through which a user's finger can enter, and a hook portion provided on an edge portion of one side (front in the example shown). The present invention is not limited thereto, and the handle portion 22 may be formed of a lever or a grip protruding from the upper surface portion 11 .

A power switch 23 , an indicator 24 for displaying the residual voltage of the storage battery 50 , and a check button 25 for activating the indicator 24 are additionally provided on the upper surface 11 . The display system 24 has, for example, a plurality of segments, and the number of lit segments increases as the residual voltage increases. Instead of this, the remaining available time or the like at the present time may be displayed on the display system 24 .

Two opening/closing doors 33 and 34 arranged in a row in the vertical direction are provided on the rear surface 14 . The opening/closing doors 33 and 34 are each configured to be rotatable around the Z-axis through a hinge H mounted on one side portion 16 side.

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

The vacuum pump 40 is installed through the anti-vibration rubber 44 on the bottom surface 12 of the housing 10 as shown in FIGS. 3 and 4 . The vacuum pump 40 includes a first pump unit 41 having a first pump chamber 410 , a second pump unit 42 having a second pump chamber 420 , and first and second pump units 42 . It is composed of a dual-head suction pump having a motor 43 for driving in common.

The vacuum pump 40 is composed of a diaphragm pump. Since a diaphragm pump has the merit of low dust and low noise compared with a piston pump etc., it is especially suitable for medical use.

The motor unit 43 is configured of, for example, a DC motor, and is driven at a predetermined rotation speed to operate the first and second pump units 41 and 42 . Fans (not shown) are mounted on both ends of the rotation shaft of the motor unit 43 . The fan cools the first and second pump parts 41 and 42 by air with the air taken in through 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 opposite to 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 , they can be densely accommodated in the housing 10 . In addition, by arranging the first and second pump chambers 410 and 420 as described above, a sufficient space can be secured between the upper 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 communicate with each other, and are connected in parallel to the piping terminal 21 through 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 communicates between the pipe terminal 21 and the first intake pipe 61 . The second intake pipe 62 and the intake filter 71 are disposed inside the filter chamber S1 installed between the upper surface portion 11 of the housing 10 and the vacuum pump 40 . The intake filter 71 is for collecting dust in the gas sucked into the first and second pump chambers 410 and 420 from the piping terminal 21 and preventing pollution of the environment, and is installed in the second intake pipe 62 . It is configured to be detachable (exchanged) for each other.

The exhaust ports of the first and second pump chambers communicate with each other, and are connected to the exhaust filter 72 through the exhaust pipe 64 . The exhaust filter 72 is arrange|positioned inside the filter chamber S1, and is comprised so that attachment/detachment (exchange) with respect to the exhaust pipe 64 is possible.

The filter chamber S1 is disposed on the rear surface 14 side rather than the front surface portion 13 of the housing 10 and opens the first opening/closing door 33 provided on the rear surface portion 14. It is comprised so that the filter chamber S1 can be accessed from the outside. Thereby, the replacement operation 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 . The storage battery 50 is constituted by a suitable storage battery such as a lithium ion battery or a nickel hydride battery. Although the rated voltage of the storage battery 50 in this embodiment is 24V, of course, it is not limited to this.

The storage battery 50 is mounted on the battery holder S2 disposed on the rear surface portion 14 side or the bottom surface portion 12 side rather than the front portion 13 of the housing 10 . The battery holder S2 is provided with terminal portions not shown in the drawings that are connected to the positive and negative electrodes of the storage battery 50 . The battery holder (S2) is formed between the rear part 14 or the bottom part 12 and the vacuum pump 40, and opens the second opening/closing door 34 installed on the rear part 14, the housing 10 It is configured to be accessible from the outside of the battery holder (S2). Thereby, the replacement operation of the storage battery 50 becomes easy.

The control panel 80 is disposed to face the inner surface of the upper surface portion 11 of the housing 10 , and is electrically connected to the battery holder S2 (electric storage 50 ) through the first wiring member 81 . The control panel 80 is electrically connected to the motor unit 43 of the vacuum pump 40 through the second wiring member 82 . In addition, the control panel 80 is connected to an AC power terminal (DC jack) 83a mounted on the rear surface 14 of the housing 10 through the third wiring member 83 . The AC power terminal 83a can be connected to commercial power through an adapter not shown in the drawing, and is used when charging the storage battery 50 or driving the vacuum generator 100 by commercial power.

As shown in FIG. 5 , the control panel 80 is electrically connected to the power switch 23 , the indicator 24 , and the check button 25 . The control panel 80 includes a driving circuit 801 for driving the vacuum pump 40 and a control circuit 802 for controlling lighting of the display system 24 . The control panel 80 receives the input operation of the power switch 23 to light the lamp in the power switch 23 and drives the vacuum pump 40 at the same time.

By driving the vacuum pump 40, the inside of the suction container not shown in the figure connected to the piping terminal 21 is exhausted, and the inside of the suction container is converted to a reduced pressure atmosphere of a predetermined pressure (eg, 37 kPa). maintain.

Here, since the 1st and 2nd pump chambers 410 and 420 are connected in parallel with respect to the piping terminal 21, compared with the case where they are connected in series, comparatively large flow rate (for example, every minute 18 liters) of suction performance can be secured. Therefore, without using a large vacuum pump, for example, the suction performance required for sputum suction can be ensured stably.

According to this embodiment, since the storage battery 50 is incorporated, an external power source such as a commercial power supply or a generator is not required. For this reason, a desired negative pressure can be stably supplied even at the time of a disaster, at the time of emergency treatment before hospital, or at the time of carrying out a patient.

Moreover, in this embodiment, since the display 24 which displays the residual voltage of the storage battery 50 is provided in the upper surface part 11 of the housing 10, determination of the charging timing of the storage battery 50 becomes easy. In addition, since the display system 24 is configured to operate (lit) only when the check button 25 is pressed, a decrease in power consumption of the storage battery 50 can be suppressed compared to the case where the display system 24 is always operated. have.

Moreover, according to this embodiment, the piping terminal 21, the handle part 22, the power switch 23, the indicator 24, the check button 25, etc. are integrated in the upper surface part 11 of the housing 10, Since it is arrange|positioned, the improvement of operability and workability|operativity can be aimed at. In particular, since the pipe terminal 21 is installed on the upper surface part 11, the suction mechanism is inserted from the vertical direction with respect to the vacuum generator 100, so that the suction tube or the like protrudes from the side of the housing 10 can stop

6 is a schematic diagram showing an example of mounting the vacuum generator 100 on a stretcher 1 for carrying a patient as one application example of the present embodiment. The vacuum generator 100 is mounted on the stretcher 1 through a mounting tool 150 . The mounting tool 150 is a box body having a receiving portion 151 capable of accommodating the vacuum generating device 100 (the lower jaw 10), and the hook portion 152 or the like is appropriately attached to the stretcher 1 through an engaging mechanism. It is configured to be able to be mounted on the mount (2) of the The configuration of the mounting tool 150 is not particularly limited, and typically includes a holding portion 153 and a ventilation portion 154 for communicating the inside and the outside of the receiving portion 151 .

The vacuum generator 100 of the present embodiment is small, and because of low dust and low noise, the mounting tool 150 can be installed on the head side of the patient mounted on the stretcher 1 . Thereby, since the vacuum generator 100 can be installed in the vicinity of the suction mechanism 90 attached to the oral cavity of a patient, etc., the suction tube 92 which connects between the patient and the suction container 91, or the suction It is particularly advantageous when there is a restriction on the length of the suction tube 93 connecting between the container 91 and the pipe terminal 21 . Moreover, since the handle part 22 is provided in the upper surface part 11 of the housing 10, attachment and detachment of the vacuum generator 100 with respect to the mounting tool 150 is also easy.

The suction container 91 is installed at an appropriate height position with the pole 3 mounted on the stretcher 1 . For this reason, since the surrounding space of the stretcher 1 can be ensured, the conveyance operability of the stretcher 1, and interference with the nurse or assistant working around the stretcher 1 can be avoided.

Moreover, according to the vacuum generator 100 of this embodiment, since the piping terminal 21 is arrange|positioned at the upper surface part 11 of the housing 10, the suction tube 93 is around the stretcher 1, and stretching is prevented. For this reason, it is possible to avoid as much as possible that the suction tube 93 is pulled out by contact with a nurse or an assistant who works around the stretcher 1 and falls off from the suction container 91 or the piping terminal 21 .

In addition, since the suction container 91 is configured separately from the vacuum generator 100 , disposal of the sucked material after use of the suction mechanism 90 is facilitated, and the vacuum generator 100 is disinfected and cleaned. also becomes unnecessary.

As mentioned above, although embodiment of this invention was described, this invention is not limited only to embodiment mentioned above, It goes without saying that a change can be added in various forms.

For example, in the above embodiment, although the example in which the vacuum generator 100 is mounted on the stretcher 1 was demonstrated, it is not limited to this, It can mount also to movable bodies, such as a wheelchair, an ambulance, and a helicopter.

Further, in the above embodiment, the vacuum generating device is configured as a negative pressure source of the sputum suction mechanism, but the present invention is not limited to this, and the present invention is applicable to other medical devices such as drainage for sucking body fluids such as blood. Moreover, this invention is applicable also to other uses other than a medical use.

1: stretcher
10: housing
11: upper part
12: bottom part
13: front part
14: rear part
21A, 21B, 21: pipe terminal
22: handle part
23: power switch
24: indicator
25: check button
33, 34: opening and closing door
40: vacuum pump
410: first pump room
420: second pump room
43: motor unit
50: storage battery
71: intake filter
72: exhaust filter
80: control panel
90: suction mechanism
100: vacuum generator
150: mounting tool
S1: filter chamber
S2: Battery Holder

Claims (9)

A vacuum generator for sputum suction, comprising:
A housing having an upper surface portion having a handle portion and a pipe terminal connectable to a suction mechanism having a sputum container, and a lower surface portion;
a vacuum pump accommodated in the housing and having first and second pump chambers connected in parallel to the pipe terminal and installed on the bottom surface;
and a storage battery accommodated in the housing and supplying electric power to the vacuum pump. According to claim 1,
an intake filter connected between the pipe terminal and the first and second pump chambers;
A vacuum generator disposed between the upper surface portion and the vacuum pump and further comprising a filter chamber accommodating the intake filter. 3. The method of claim 2,
The housing further has a front portion and a rear portion,
The storage battery is disposed on the rear side or the bottom side of the front side,
and the filter chamber is disposed on the rear side of the front side rather than on the front side. 4. The method of claim 3,
The rear portion of the vacuum generator having an opening and closing door capable of exposing at least one of the filter chamber and the storage battery to the outside. 3. The method of claim 2,
and an exhaust filter connected to the first and second pump chambers and accommodated in the filter chamber. 6. The method according to any one of claims 1 to 5,
The vacuum pump is a vacuum generator that is a diaphragm pump. 6. The method according to any one of claims 1 to 5,
The housing is installed on the upper surface portion of the vacuum generator further having an indicator for displaying the remaining amount of the storage battery. 6. The method according to any one of claims 1 to 5,
A vacuum generator further comprising a mounting tool configured to have an accommodating portion for accommodating the housing and to be mounted on a movable body. A suction device for sputum suction having a suction mechanism and a vacuum generator, the suction device comprising:
The suction mechanism has a suction container and a suction tube,
The vacuum generator is
a housing having an upper surface portion having a handle portion and a pipe terminal connected to the suction tube, and a lower surface portion;
a vacuum pump accommodated in the housing and having first and second pump chambers connected in parallel to the pipe terminal and installed on the bottom surface;
A suction device having a storage battery accommodated in the housing and supplying electric power to the vacuum pump.

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