KR102707851B1 - Air volume customizable pumping device for respirator, respirator having the same, and control method thereof - Google Patents

Abstract

The air volume-customized pumping device for an artificial respirator related to the present invention is a pumping device formed to periodically compress an air bladder to provide air for breathing to a patient, the pumping device including: a motor; a reduction unit connected to the motor; a conversion mechanism unit that converts an output rotation of the reduction unit into linear motion; a pressurizing unit connected to the conversion mechanism unit and formed to compress and release the air bladder; a selection unit formed to select an air volume according to a patient's condition; a sensor unit formed to detect a reference position of the conversion mechanism unit corresponding to an initial position of retreat of the pressurizing unit; and a control unit configured to apply an operation control signal to the motor according to the patient's condition selected through the selection unit, and change the rotation direction of the motor and control the rotation amount of the motor based on a detection signal of the sensor unit when the conversion mechanism unit reaches the reference position.

Description

{AIR VOLUME CUSTOMIZABLE PUMPING DEVICE FOR RESPIRATOR, RESPIRATOR HAVING THE SAME, AND CONTROL METHOD THEREOF}

The present invention relates to an air volume-customized pumping device for a respirator, a respirator having the same, and a control method thereof.

A ventilator is a device that allows artificial breathing control by blowing air or gas into the lungs or letting it out. It can be used for patients who cannot breathe on their own or who have insufficient breathing. Ventilators are mostly used for treating critically ill patients, home care, and emergency treatment, but due to respiratory infectious diseases such as COVID-19 that have shaken the world, the number of critically ill patients with breathing difficulties has also increased rapidly, and the need for priority treatment for them has also increased.

Ventilators are divided into a type that transports positive pressure air to the lungs when the machine inhales, and a type that applies negative pressure so that an artificial airway is not needed, and are configured to be controlled in various ways depending on the patient or product by control factors such as air volume, pressure, flow rate, and time.

Facilities such as hospitals and emergency medical centers are equipped with specialized devices to help patients breathe, but in situations where a respiratory infectious disease such as COVID-19 is present or suspected, it may not be possible for people to perform artificial respiration directly due to the risk of infection even in an emergency situation. As emergency artificial respirators are distributed to homes and offices, social awareness and the need to save precious lives have also increased.

However, there are limitations to the ability of ventilators distributed to homes and other places to control the amount of air that can vary depending on the patient's age or condition, which may lead to insufficient emergency measures.

*Related prior art

Republic of Korea Patent No. 10-2176247 (registered on November 3, 2020)

Republic of Korea Patent No. 10-2151159 (registered on August 27, 2020)

Republic of Korea Patent No. 10-2313232 (registered on October 8, 2021)

The purpose of the present invention is to propose an air volume pumping device for a respirator capable of supplying an air volume selected according to the age or condition of a patient, a respirator having the same, and a control method thereof.

Another object of the present invention is to provide an air pumping device for a ventilator capable of supplying an air volume accurately according to the age group of a patient while simplifying the configuration of the device, a ventilator having the same, and a control method thereof.

The air volume-customized pumping device for an artificial respirator related to the present invention is a pumping device formed to periodically compress an air bladder to provide air for breathing to a patient, the pumping device including: a motor; a reduction unit connected to the motor; a conversion mechanism unit that converts an output rotation of the reduction unit into linear motion; a pressurizing unit connected to the conversion mechanism unit and formed to compress and release the air bladder; a selection unit formed to select an air volume according to a patient's condition; a sensor unit formed to detect a reference position of the conversion mechanism unit corresponding to an initial position of retreat of the pressurizing unit; and a control unit configured to apply an operation control signal to the motor according to the patient's condition selected through the selection unit, and change the rotation direction of the motor and control the rotation amount of the motor based on a detection signal of the sensor unit when the conversion mechanism unit reaches the reference position.

As an example related to the present invention, the reduction unit may include a worm gear connected to the output shaft of the motor; and a transmission gear meshed with the worm gear and transmitting a reduced rotation amount to the conversion mechanism.

As an example related to the present invention, the selection unit may be formed to provide a plurality of age groups so that the user can select the approximate age of the patient, and the control unit may be formed to control the motor to rotate forward by a preset rotation amount capable of pumping an amount of air corresponding to an age group selected from among the plurality of age groups and then rotate in reverse.

As an example related to the present invention, the air volume customized pumping device for the artificial respirator may further include an integrated support frame formed to support the reduction unit, the conversion mechanism unit, and the pressurizing unit.

As an example related to the present invention, the support frame may further include a guide capable of linearly guiding the pressurizing portion.

As an example related to the present invention, the pressurizing portion includes a push glove that contacts and compresses the air pocket and a load portion connected to the push glove, and the guide may be formed in a penetrable shape so that the load portion can be inserted.

As an example related to the present invention, the conversion mechanism may include an arm part that is connected to the output shaft of the reduction unit and rotates forward and reversely within a limited rotation angle range under the control of the control unit; and a link part that has one end pin-connected to the arm part and the other end pin-connected to the pressure unit.

As an example related to the present invention, the sensor unit may be formed in the form of a proximity sensor positioned on one side of the support frame and capable of detecting when the dark part reaches the sensor unit.

As an example related to the present invention, the sensor part may include a Hall sensor, and the dark part may be provided with a magnet that can be detected by the Hall sensor.

The present invention also proposes a respirator having a customized air volume pumping device as described above.

A method for controlling an artificial respirator having an air volume-customized pumping device related to the present invention comprises a pumping device comprising: a motor; a reduction unit connected to the motor; a conversion mechanism for converting an output rotation of the reduction unit into a linear motion; a pressurizing unit connected to the conversion mechanism and formed to compress and release an air bladder; a selection unit formed to provide a plurality of age groups so that the approximate age of a patient can be selected; and a sensor unit formed to detect a reference position of the conversion mechanism corresponding to an initial position of the retraction of the pressurizing unit; The method comprises the steps of: rotating the motor forward by a preset rotation amount capable of pumping an air volume corresponding to an age group selected from among the plurality of age groups; rotating the motor in reverse when the motor is rotated forward by the preset rotation amount; and rotating the motor forward when a detection signal of the sensor unit is detected when the conversion mechanism reaches the reference position.

According to the air volume customized pumping device for an artificial respirator related to the present invention, the air volume can be selected according to the patient's condition, and the rotation of the motor is controlled based on the detection by the sensor unit when the conversion mechanism reaches the reference position, so that the air volume can be accurately controlled by the movement of the conversion mechanism and the pressurization unit. In addition, the device can be configured compactly overall by simply arranging the sensor unit that detects the reference position of the conversion mechanism.

FIG. 1 is a schematic perspective view of an air volume-customized pumping device (100) for an artificial respirator according to an example related to the present invention.
Figure 2 is a perspective view showing the air volume customization pumping device (100) for the artificial respirator of Figure 1 viewed from a different direction.
FIG. 3 is a block diagram of electrical components that may be included in a ventilator having an air volume-customized pumping device according to the present invention.
Figures 4 to 6 are operating state diagrams showing the operation of an air volume customized pumping device (100) for an artificial respirator related to the present invention.

Hereinafter, a customized air volume pumping device for a respirator related to the present invention, a respirator having the same, and a control method thereof will be described in detail with reference to the attached drawings.

As shown in FIGS. 1 and 2, the air volume customized pumping device (100) for an artificial respirator related to the present invention comprises a motor (120), a reduction unit (130) for reducing the rotational speed of the motor (120), a conversion mechanism (140) for converting the rotational motion of the reduction unit (130), and a pressurizing unit (150) for performing a linear reciprocating motion by the conversion mechanism (140) installed on a support frame (110). Although not shown, the pressurizing unit (150) is configured to press an air bag or balloon for actually blowing air into a patient.

As shown in Fig. 3, the motor (120) receives power from the power supply unit (171) and rotates, and receives a control signal from the control unit (170) to control the rotation direction, rotation speed, etc.

The reduction unit (130) reduces the rotational speed of the motor (120) to a level where the pressurizing unit (150) obtains sufficient power to reciprocate at an appropriate speed. The reduction unit (130) may include a worm gear (131) connected to the output shaft of the motor (120) and a transmission gear (132) that is meshed with the worm gear (131) and transmits the reduced rotational amount to the conversion mechanism (140). In Fig. 2, the worm gear (131) and the transmission gear (132) are positioned inside the casing, but known gears may be used and a detailed description thereof will be omitted.

The conversion mechanism (140) may be provided with an arm (141) that is connected to the output shaft (133) of the reduction unit (130) and rotates forward and backward in a limited rotation angle range under the control of the control unit (170), and a link unit (142) that has one end pin-connected to the arm (141) (meaning a connection in which the connected members can rotate relative to each other) and the other end pin-connected to the pressurizing unit (150). Depending on the case, the arm (141) or link unit (142) may be composed of a plurality of such members, and their shapes may also be changed as needed.

The pressurizing portion (150) includes a push glove (151) that contacts and compresses an air pocket, and a load portion (152) connected to the push glove (151). In order to ensure that the pressurizing portion (150) moves linearly and reciprocally, the support frame (110) may be provided with a cylindrical guide (115) through which the load portion (152) can be inserted.

In relation to the present invention, the motor (120) is configured to be able to change its rotation direction under certain conditions by a control signal of the control unit (170). That is, the rotation direction and rotation amount of the output shaft (133) of the reduction unit (130) that provides rotational force to the conversion mechanism (140) that creates the reciprocating movement amount (skroke) of the pressurizing unit (150) are related to the rotation direction and rotation amount of the motor (120). In the present invention, the position of the conversion mechanism (140) is detected and the rotation direction of the motor (120) can be changed when a certain condition is satisfied. To this end, a sensor unit (160) is installed on one side of the support frame (110). The sensor unit (160) detects when the arm unit (141) performing limited rotation reaches the sensor unit (160) and transmits the result signal to the control unit (170). The control unit (170) accordingly considers that the dark part (141) that has reached the sensor part (160) has returned to the initial position and changes the rotation direction of the motor (120).

The sensor unit (160) may be configured in the form of a proximity sensor that detects whether the dark part (141) has rotated and approached the position where the sensor unit (160) is installed. As a preferred example, the sensor unit (160) includes a hall sensor, and a magnet (not shown) that can be detected by the hall sensor may be built into the dark part (141).

A reference position is set by the sensor unit (160) to provide a customized stroke for each patient of the pressure unit (150) described below.

As shown in FIG. 3, the artificial respirator having the air volume customized pumping device (100) related to the present invention may include a selection unit (172) to select the air volume according to the patient's condition. The selection unit (172) may be implemented in the form of an operable button or key, a dial, or a touch screen. In relation to the patient's condition, in this example, the patient is divided into age groups and the air volume appropriate for the age group is configured to be supplied. For example, the user of the device may select whether the patient is an infant or a child (baby), an adult, or an elderly person (elderly) through the selection unit (172).

When the condition or state of the patient is selected by the selection unit (172), the control unit (170) controls the motor (120) to rotate only up to the stroke of the pressure unit (150) that matches the selected patient, which is the amount by which the pressure unit (150) moves forward from the initial position to compress air again. That is, the control unit (170) rotates the motor (120) forward by a preset rotation amount that can pump the amount of air corresponding to the selected age group among multiple age groups, and then rotates it in reverse so that the pressure unit (150) returns.

The operating status of the device or the condition of the selected patient can be identified by an indicator lamp or display unit (173) or can be configured to provide an auditory notification or information.

In addition to the sensor that detects the position of the dark part (141) described above, the sensor unit (160) may also be equipped with a sensor that detects the patient's heartbeat or body temperature. The external interface (174) may be configured to operate the device by connecting it externally through a signal from the control unit (170), or to transmit information related to the operation of the device to the outside.

Figures 4 to 6 are operation state diagrams showing the operation of the air volume customized pumping device (100) for an artificial respirator related to the present invention. In these drawings, the device shown at the top is in a state where the conversion mechanism part (140) and the pressurizing part (150) are in the initial position, and the arm part (141) has reached the sensor part (160).

If the patient is a baby or a child, as in the device at the bottom of Fig. 4, the motor (120) rotates the arm (141) in the first angular range (α1) so that the pressurizing portion (150) can reciprocate between the first strokes (S1). This rotation of the motor (120) is implemented by the control of the control portion (170) as described above.

If the patient is elderly, the motor (120) rotates the arm (141) in a second angle range (α2) greater than the first angle range (α1) so that the pressurizing portion (150) can reciprocate between the second strokes (S2), as in the device at the bottom of Fig. 5.

If the patient is a normal adult, the motor (120) rotates the arm (141) in the third angle range (α3) so that the pressurizing portion (150) can reciprocate between the third strokes (S3), as in the device at the bottom of Fig. 6.

In this way, it is possible to provide an appropriate amount of air to a patient selected through the selection unit (172) by the sensor unit (160) and the control unit (170), and to ensure that the patient's breathing is properly restored even in an emergency situation.

The air volume customized pumping device for a ventilator, the ventilator having the same, and the control method thereof described above are not limited to the configuration and method of the described embodiments. The above embodiments may be configured by selectively combining all or part of each embodiment so that various modifications can be made.

100: Customized air volume pumping device for artificial respirator 110: Support frame
115: Guide 120: Motor
130: Reduction gear 131: Worm gear
132: Transmission gear 133: Output shaft
140: Transformer mechanism 141: Dark part
142: Link section 150: Pressurized section
151: Push Glove 152: Loading Part
160: Sensor section α1: First angle range
α2: 2nd angle range α3: 2nd angle range
S1: 1st stroke S2: 2nd stroke
S3: 3rd stroke

Claims (12)

A pumping device configured to provide air for breathing to a patient by periodically compressing an air bladder, said pumping device comprising:
motor;
A reduction gear connected to the above motor;
A conversion mechanism that converts the output rotation of the above reduction unit into linear motion;
A pressurizing portion formed to be connected to the above-mentioned conversion mechanism and capable of compressing and releasing the air bladder;
A selection section formed to select the air volume according to the patient's condition;
A sensor section formed to detect a reference position of the conversion mechanism corresponding to the initial position of the retreat of the pressurizing section;
A control unit configured to apply a motion control signal to the motor according to the condition of the patient selected through the selection unit, and change the rotation direction of the motor and control the rotation amount of the motor based on a detection signal from the sensor unit when the conversion mechanism unit reaches the reference position; and
It includes an integrated support frame formed to support the above reduction unit, the conversion mechanism unit, the pressurizing unit, and the sensor unit,
The above conversion mechanism is,
A female part that is connected to the output shaft of the above reduction unit and rotates forward and reversely within a limited rotation angle range under the control of the above control unit; and
It includes a link part that is pin-connected to the above-mentioned dark part at one end and pin-connected to the above-mentioned pressurized part at the other end.
The sensor part is formed in the form of a proximity sensor located on one side of the support frame and capable of detecting when the dark part reaches the sensor part, and is a customized air volume pumping device for an artificial respirator.
In the first paragraph,
The above reduction unit,
A worm gear connected to the output shaft of the above motor; and
An air volume customized pumping device for an artificial respirator, comprising a transmission gear that is meshed with the above worm gear and transmits a reduced rotation amount to the above conversion mechanism.
In the first paragraph,
The above selection section is configured to provide multiple age groups so that the user can select the patient's age group.
A customized air volume pumping device for an artificial respirator, wherein the control unit is configured to control the motor to rotate forward by a preset rotation amount capable of pumping an air volume corresponding to a selected age group among the plurality of age groups and then rotate in reverse.
delete In the first paragraph,
A customized air volume pumping device for an artificial respirator, wherein the support frame further includes a guide capable of linearly guiding the pressurized portion.
In paragraph 5,
The pressurized portion includes a push glove that contacts and compresses the air pocket and a load portion connected to the push glove,
The above guide is a customized air volume pumping device for an artificial respirator, formed in a penetrable shape so that the above load section can be inserted.
delete delete In the first paragraph,
The above sensor part includes a Hall sensor,
A customized air volume pumping device for an artificial respirator, wherein the above-mentioned dark part is equipped with a magnet that can be detected by the above-mentioned Hall sensor.
A respirator having an air volume-customized pumping device according to any one of claims 1 to 3, 5, 6 and 9.
motor;
A reduction gear connected to the above motor;
A conversion mechanism that converts the output rotation of the above reduction unit into linear motion;
A pressurizing portion formed to be connected to the above-mentioned conversion mechanism and capable of compressing and releasing an air bladder;
A selection section configured to provide multiple age groups so that the patient's age group can be selected;
A sensor part formed to detect a reference position of the conversion mechanism part corresponding to the initial position of the retreat of the pressurizing part; and
It includes an integrated support frame formed to support the above reduction unit, the conversion mechanism unit, the pressurizing unit, and the sensor unit,
The above conversion mechanism is,
A female part that is connected to the output shaft of the above reduction unit and rotates in the forward and reverse directions within a limited rotation angle range; and
It includes a link part that is pin-connected to the above-mentioned dark part at one end and pin-connected to the above-mentioned pressurized part at the other end.
The above sensor part is formed in the form of a proximity sensor located on one side of the support frame and capable of detecting when the dark part reaches the sensor part, and is a control method for an artificial respirator including a pumping device, the method being:
A step of rotating the motor in the forward direction by a preset rotation amount capable of pumping an amount of air corresponding to a selected age group among the above multiple age groups;
A step of rotating the motor in reverse when the motor rotates forward by the preset rotation amount; and
A method for controlling an artificial respirator having an air volume-customized pumping device, comprising the step of rotating the motor in the forward direction when a detection signal from the sensor unit is detected when the conversion mechanism unit reaches the reference position.
In Article 11,
The above sensor part includes a Hall sensor,
A method for controlling an artificial respirator having an air volume-customized pumping device, wherein the above-mentioned dark section is provided with a magnet that can be detected by the above-mentioned Hall sensor.