CN104436543B - Sucking training instrument for neonate and training method thereof - Google Patents

Abstract

The invention discloses a neonatal sucking training instrument and a training method thereof, comprising a pressure measuring silicone tube, a pressure sensor, a sensor signal amplification circuit, a microprocessor, and a touch display screen. One end of the pressure-measuring silicone tube is a sucking end, the other end is connected to a T-shaped tube, one end of the T-shaped tube is a pressure sensor, the other end is connected to a milk storage device, and this end is also provided with a milk valve; the pressure sensor is passed through a sensor signal amplification circuit. Connect the microprocessor, and the microprocessor connects the touch screen and the milk valve to control the opening and closing of the milk valve. The present invention obtains the initial negative pressure value of neonatal sucking through the pressure measuring device, and then inputs the neonatal parameters through the touch screen, and the system gives the training target negative pressure. When the neonatal sucking negative pressure reaches a predetermined value, the microprocessor controls the milk The valve opens and the newborn can drink milk from the reservoir. In the future, the pressure value can be gradually increased to achieve the purpose of increasing the sucking pressure of newborns and fully stimulating lactation.

Description

A newborn sucking training device and its training method

technical field

The invention relates to a medical device, in particular to a newborn sucking training instrument and a training method thereof.

Background technique

Newborn sucking is the key to stimulating the nipple, promoting the secretion of prolactin from the pituitary gland, and then leading to the secretion of milk. Weak oral suction will lead to insufficient nipple stimulation and reduced milk production. The mother then uses a feeding bottle to add formula milk, which further reduces stimulation to the nipple and reduces lactation, which leads to a vicious circle and fails to achieve exclusive breastfeeding. Exclusive breastfeeding is the best feeding method recommended by the World Health Organization, which can reduce neonatal infectious diseases and promote the development of their intellectual and neuropsychological functions. According to a report published by the World Health Organization, 45% of the deaths of children under the age of 5 are related to improper feeding practices in the first year of life. Therefore, exclusive breastfeeding is of great significance to human reproduction and population quality.

Studies have shown that there are many reasons for the reduced oral sucking ability of newborns, such as cesarean section, premature delivery, using a feeding bottle to add formula milk, and using anesthesia during delivery. After clinical verification, the maximum oral negative pressure range of normal full-term newborn sucking is -19kpa--38kpa, and this sucking force can effectively stimulate lactation. On the first day after cesarean delivery, the average oral negative pressure was -10kpa±3kpa, which was significantly lower than that of vaginal delivery. Using a feeding bottle to add formula milk, the newborn will quickly develop nipple illusions, and the sucking force will drop to half of the normal sucking force (-6.65kpa). And the newborns who use anesthesia to give birth painlessly, the negative pressure of oral sucking is also lower than that of normal delivery newborns. For newborns whose oral negative pressure is lower than normal, the maternal lactation starts late, and the milk volume is insufficient, which affects breastfeeding; it is also prone to milk stasis leading to mastitis and maternal breast pain. Therefore, for those with abnormal oral sucking negative pressure, early intervention should be implemented for newborns to prevent the occurrence of related complications and promote the success of breastfeeding.

At present, there is no relevant instrument to measure and train the oral pressure of newborn sucking, which leads to the inability to accurately and effectively judge whether the newborn is sucking effectively in clinical practice, and newborns with low oral sucking force cannot fully stimulate lactation of the parturient mother, which affects exclusive breastfeeding.

Contents of the invention

The purpose of the present invention is to provide a simple and accurate neonatal sucking training instrument and a training method for training the sucking ability of newborns.

Technical scheme of the present invention is:

A sucking training instrument for newborns, comprising a pressure-measuring silicone tube, a pressure sensor, a sensor signal amplification circuit, a microprocessor and a touch display screen, one end of the pressure-measuring silicone tube is a sucking end, and the other end is connected to a T-shaped tube, One end of the T-shaped tube is provided with a pressure sensor, the other end is connected to the milk storage device, and this end is also provided with a milk valve; the pressure sensor is connected to the microprocessor through the sensor signal amplification circuit, and the microprocessor is connected to the touch screen and the milk valve. Control the opening and closing of the milk valve.

Specifically, the sucking end is pasted next to the nipple during use, so as to avoid nipple illusion.

Preferably, the suction end of the pressure-measuring silicone tube is a double-cavity tube, one cavity is connected to the side of the T-shaped tube with the pressure sensor, and the other cavity is connected to the side of the T-shaped tube connected to the milk reservoir, avoiding single Intracavitary milk affects manometry results.

Preferably, the pressure measuring silicone tube has an outer diameter of 1.7-2.5 mm and an inner diameter of 0.7-1.5 mm.

Preferably, the range of the pressure sensor is 0-50kpa, the repeatability error is 0.02%, and the comprehensive accuracy is 0.5%F.S.

Preferably, the pressure sensor collects data continuously, and the microprocessor simulates the sucking negative pressure curve in real time, and displays it on the touch screen.

Further preferably, the pressure sensor is connected in series with a constant current source to output a voltage signal, and then sequentially connected to a first-stage differential amplifier circuit composed of operational amplifiers U2 and U3 according to the in-phase input connection method and a second-stage differential amplifier circuit composed of operational amplifier U4 circuit.

A training method for a newborn sucking training instrument, comprising the steps of:

(1) Firstly, the initial negative pressure value of neonatal sucking is measured by the pressure measuring device, and then the birth status parameters of the newborn are input through the touch screen. Initial sucking target negative pressure value;

(2) Close the milk valve and carry out sucking training for the newborn until the newborn’s sucking negative pressure reaches the predetermined target value, the milk valve opens, and the newborn can suck the milk in the milk storage;

(3) During the sucking process of the newborn, the pressure measuring device is always in the pressure measuring state, and the sucking pressure curve of the newborn is drawn; and the milk valve can only be opened when the sucking force of the newborn reaches the set value, so as to continuously train the newborn to suck ability to fully stimulate lactation.

(4) According to the baby's condition, the system sets the milk valve to close after the baby sucks for a certain period of time. It needs to reach the set higher sucking negative pressure, and the milk valve will be reopened to gradually train its sucking ability and increase the target negative pressure value. To achieve the purpose of training.

Preferably, the initial condition parameters of the newborn include Apgar scores at 1 minute and 5 minutes after birth, vaginal delivery/cesarean section, premature delivery/full-term delivery, whether the mother uses central anesthetics, whether there are diseases that affect sucking (cleft lip and palate) , short tongue tie, congenital heart disease), whether you have used silicone pacifiers, and the current oral sucking power.

Further preferably, in step 3, the pressure value is gradually increased, and the training target is between -30kpa and -10kpa.

The advantages of the present invention are:

The neonatal sucking training instrument and its training method provided by the present invention, start to work by first measuring the initial negative pressure value of neonatal sucking by the pressure measuring device, and then inputting the neonatal parameters through the touch screen, the system will Set the target pressure value for the initial sucking training of the newborn. At this time, the newborn can be sucked. When the sucking pressure of the newborn reaches the predetermined value, the microprocessor will give an instruction to open the milk valve, and the newborn can suck the milk from the milk storage device. ; and the pressure measuring device is always in the pressure measuring state, only when the sucking force reaches the set value, the milk valve will open, so as to continuously train the newborn's sucking ability. In the future, the pressure value can be gradually increased to achieve the purpose of training. It will not affect the sucking of newborns, and will not cause nipple illusion. It is simple, fast, accurate, and non-invasive. It is easy for parents to accept, and it is convenient for clinical application.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and embodiment:

Fig. 1 is the structural principle diagram of newborn sucking training instrument of the present invention;

2 is a schematic diagram of a sensor signal amplification circuit according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the microprocessor described in the embodiment of the present invention.

detailed description

Example:

In order to facilitate those skilled in the art to understand the technical content of the present invention, the present invention will be further described in detail below in conjunction with the embodiments.

As shown in Figure 1, a newborn sucking training instrument disclosed by the present invention includes a pressure measuring silicone tube 1, a pressure sensor 2, a sensor signal amplification circuit 3, a microprocessor 4 and a touch display screen 5, the One end of the pressure-measuring silicone tube is the sucking end 11. The sucking end 11 is pasted next to the nipple during use. The other end of the pressure-measuring silicone tube is connected to a T-shaped tube. One end of the T-shaped tube is provided with a pressure sensor 2. The other end of the T-shaped tube is Connect to the milk storage device 6, and this end is also provided with a milk valve 61; the suction end of the pressure measuring silicone tube is a double-chamber tube, one cavity is connected to the side of the T-shaped tube with the pressure sensor, and the other cavity is connected to the T-shaped tube. The tube is attached to the side of the milk reservoir. When working, the milk storage device is hung on the mother's neck, and the position is slightly higher than or flush with the position of the nipple, so as to ensure that the milk flows out under the action of gravity. The pressure sensor is connected to the microprocessor through the sensor signal amplification circuit, and the microprocessor is connected to the touch display screen and the milk valve to control the opening and closing of the milk valve.

Pressure sensor parameters: pressure sensor range 0 to -50kpa; repeatability error 0.02%, comprehensive accuracy 0.5%F.S. The pressure measuring silicone tube is 1.7-2.5 mm, the inner diameter is 0.7-1.5 mm, and the length is 400 mm.

Specifically, this method does not connect the pressure-measuring silicone tube to the artificial silicone nipple to allow the newborn to suck and measure the sucking negative pressure. Instead, the pressure-measuring silicone tube is directly pasted next to the nipple, and the sucking pressure can be directly measured when the newborn sucks the nipple. Pressure can avoid the nipple illusion caused by sucking on artificial silicone nipples, which will affect subsequent breastfeeding. The data collection of the sucking mouth pressure measuring instrument is continuous, and the computer immediately simulates the sucking negative pressure curve, which is displayed on the touch screen.

As shown in Figure 2, it is the schematic diagram of the sensor signal amplification circuit. The voltage regulator tube D1, the operational amplifier A1 and the transistor Q1 form a constant current source, which is connected in series with the pressure sensor. The resistor R1 is composed of the stable voltage UD1 of D1 and the constant current required by the sensor. Ic decides, that is, Ic= UD1/ R1. A preamplifier consisting of two op amps A2, A3 followed by a differential amplifier A4. The preamplifier provides high input impedance, low noise and gain. The differential amplifier suppresses common-mode noise. This is a first-stage differential amplifier circuit composed of operational amplifiers U2 and U3 according to the non-inverting input connection method, and operational amplifier U4 to form a second-stage differential amplifier circuit. In the first-stage circuit, the feedback network composed of R3, R4, and R5 introduces negative feedback, where R4=R5. Gain is determined by R4/R3.

As shown in Figure 3, it is a schematic diagram of microprocessor control, the milk valve is connected to P1.1, and this port on the microprocessor controls the training sequence. The serial interface RXD TXD of the microprocessor is connected to the touch screen. After the data collected by the microprocessor is processed, it is sent to the touch screen by the serial port RXD TXD to display the simulated sucking negative pressure curve, which is displayed on the touch screen. . And can accept input instructions to control the system work. XTAL1 and XTAL2 connect the crystal oscillator.

This embodiment comprises steps when concrete work:

(1) First, the initial negative pressure value of neonatal sucking is measured by the manometry device, and then the birth status parameters of the newborn are input through the touch screen. The initial status parameters of the newborn include Apgar scores at 1 minute and 5 minutes after birth, vaginal delivery/ Cesarean section, premature/full-term delivery, whether the mother uses central anesthetics, whether there are diseases that affect sucking (cleft lip and palate, short tongue tie, congenital heart disease), whether silicone pacifiers have been used, and the current oral sucking power. An expert system is integrated inside the training instrument, which can give the initial target negative pressure of neonatal sucking exercise according to the initial negative pressure value of neonatal sucking and the parameters of neonatal birth status input by the touch screen.

(2) Close the milk valve and carry out sucking training for the newborn. When the sucking pressure of the newborn reaches a predetermined value, the microprocessor will give an instruction to open the milk valve, and the milk valve will open, and the newborn will suck the milk in the milk storage. During the sucking process of the newborn, the pressure measuring device is always in the pressure measuring state, and the milk valve can only be opened when the sucking force reaches the set value, so as to continuously train the sucking ability of the newborn and fully stimulate lactation.

(3) According to the baby's condition, the system sets the milk valve to close after the baby sucks for a certain period of time. It needs to reach the set higher sucking negative pressure, and the milk valve will be reopened to gradually train its sucking ability. The training target is -30kpa～ Between -10kpa.

The above-mentioned embodiments are only specific implementations of the present invention, and their descriptions are more specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these obvious replacement forms all belong to the protection scope of the present invention.

Claims (8)

1. A neonatal sucking training instrument, characterized in that: comprising pressure measuring silicone tube, pressure sensor, sensor signal amplifying circuit, microprocessor and touch display screen, one end of said pressure measuring silicone tube is a sucking end, and the other One end is connected to a T-shaped tube, one end of the T-shaped tube is provided with a pressure sensor, the other end of the T-shaped tube is connected to the milk storage device, and this end is provided with a milk valve; the pressure sensor is connected to the microprocessor through a sensor signal amplification circuit, and the microprocessor The processor connects the touch display screen and the milk valve to control the opening and closing of the milk valve; the suction end of the pressure measuring silicone tube is a double-chamber tube, one of which is connected to the side of the T-shaped tube with the pressure sensor, and the other The cavity is connected to the side of the T-tube connected to the milk storage to avoid the influence of the milk in the single cavity tube on the pressure measurement results; Close the milk valve and carry out sucking training for the newborn until the sucking negative pressure of the newborn reaches the predetermined target value, the milk valve will open, and the newborn can suck the milk in the milk storage; during the sucking process of the newborn, the pressure measuring device is always on Measure the state of the pressure and draw the sucking pressure curve of the newborn; according to the baby's condition, the system sets the milk valve to close after the baby sucks for a certain period of time, and the milk valve needs to reach the set higher sucking negative pressure, and the milk valve is reopened to gradually train Its sucking ability can increase the target negative pressure value and achieve the purpose of training. 2. The neonatal sucking training instrument according to claim 1, characterized in that: the outer diameter of the pressure-measuring silicone tube is 1.7-2.5 mm, and the inner diameter is 0.7-1.5 mm. 3. The neonatal sucking training instrument according to claim 1, characterized in that: the range of the pressure sensor is 0-50kpa, the repeatability error is 0.02%, and the comprehensive accuracy is 0.5% F.S (full scale). 4. The neonatal sucking training device according to claim 1, characterized in that: said pressure sensor collects data continuously, and the microprocessor simulates sucking negative pressure curve in real time, and displays it on the touch screen. 5. The neonatal sucking training instrument according to claim 4, characterized in that: said pressure sensor is connected in series with a constant current source to output a voltage signal, and then sequentially connected to op-amps U2 and U3 to form the first in-phase input connection. The first-stage differential amplifier circuit and the second-stage differential amplifier circuit composed of operational amplifier U4. 6. A training method for a newborn sucking training instrument, characterized in that it comprises the steps of: (1) Firstly, the initial negative pressure value of neonatal sucking is measured by the pressure measuring device, and then the birth status parameters of the newborn are input through the touch screen. Initial sucking target negative pressure value; (2) Close the milk valve and carry out sucking training for the newborn until the newborn’s sucking negative pressure reaches the predetermined target value, the milk valve opens, and the newborn can suck the milk in the milk storage; (3) During the sucking process of the newborn, the pressure measuring device is always in the pressure measuring state, and the sucking pressure curve of the newborn is drawn; and the milk valve can only be opened when the sucking force of the newborn reaches the set value, so as to continuously train the newborn to suck ability to fully stimulate lactation; (4) According to the baby's condition, the system sets the milk valve to close after the baby sucks for a certain period of time. It needs to reach the set higher sucking negative pressure, and the milk valve will be reopened to gradually train its sucking ability and increase the target negative pressure value. To achieve the purpose of training. 7. The training method of the neonatal sucking training instrument according to claim 6, characterized in that: the initial state parameters of the newborn include: birth 1 minute and 5 minutes Apgar score; vaginal delivery/cesarean section; premature delivery/foot Monthly delivery; whether the mother uses central anesthetics; whether there are diseases that affect sucking; whether silicone pacifiers have been used; current oral sucking power. 8. The training method of the neonatal sucking training instrument according to claim 6, characterized in that: in step 4, the target negative pressure value is increased, and the training target is between -30kpa～-10kpa.