CN2358833Y

CN2358833Y - Binder type mornitoring instrument for fetal heart sound

Info

Publication number: CN2358833Y
Application number: CN97225594.XU
Authority: CN
Inventors: 高国伟
Original assignee: Zhongfangrong Science And Techco Ltd
Current assignee: Zhongfangrong Science And Techco Ltd
Priority date: 1997-09-04
Filing date: 1997-09-04
Publication date: 2000-01-19
Anticipated expiration: 2007-09-04

Abstract

The utility model belongs to the field of medical health care articles, particularly a sensor abdomen belt. The sensor abdomen belt uses advanced fetal sound sensor and microcircuit technologies. The fetal sound sensor is composed of the piezoelectric ceramics sensor of a high voltage electric constant and a forward arranged amplifier sealed in a casing. The fetal sound sensor is connected with an instrument box through a coaxial cable. The utility model can carry out monitoring and listening on the heart sound state of a fetus with a gestation of more than 20 weeks and is provided with a counting mode for pregnant women to carry out fetal movement counting. Simultaneously, the sensor abdomen belt can upward lifting raising abdomens, lighten the heavy feeling of the abdomens, prevent lumbago during pregnant period and avoid uterus sagging, muscle looseness after birth, the formation of sagging abdomens and part of abortions and premature deliveries caused by the sagging abdomens. The sensor abdomen belt does no harm to human health and is suitable for pregnant women to use as a health care article and carry out monitoring in the families.

Description

Binder type tire sound monitor

This utility model technology belongs to the medical health care products field.

Gestation is the most important event of one's life that each women of child-bearing age can run into.Especially pregnant middle and late stage, body burden increases the weight of, and the anemia of pregnant woman tends to because heavy abdominal part causes clinical symptoms such as lumbago, edema of lower limbs.At present, general commercially available bellyband can't use inadequately because of abdominal circumference, still needleless bellyband that this special physiological stage of gestation, pregnant women are used or similarly health product on the market.

After the gestation 4 months, can feel fetal movement, and audiometry is to fetal heart sound.This is the whether normal in uterus binomial important indicator of fetus.The prenatal diagnosis that only relies on hospital to carry out is not enough.Under daily life and some situation, the umbilical factors that is difficult to expect may cause a series of fetal abnormalities such as comprising fetal movement, fetal rhythm at any time, serious will cause fetal anoxia, suffocate even dead.Because the substantial connection between the mother and baby, some variation of fetus, mother is perception at first, thus anemia of pregnant woman oneself observe fetus normally whether, be the key that realizes enclosing living phase health care, this is the consciousness of " self-monitoring " of promotion energetically at present just.

At the practical situation of above two aspects, this technology provides a kind of effective way of dealing with problems.Binder type tire sound monitor is a kind of pick off bellyband.After on the suspender for pregnant woman, can monitor the hear sounds of foetus at any time on the one hand and carry out the fetal movement counting, can upwards hold up the abdominal part of protuberance on the other hand, alleviate the sense of heaviness of abdominal part, prevention pregnancy period lumbago, avoid uterine prolapse, the lax and formation pendulous abdomen of abdominal muscle in puerperal, and the miscarriage or the premature labor that partly cause by pendulous abdomen.

Fig. 1 uses the sketch map of this patent product for the anemia of pregnant woman.

Fig. 2 is that this patent product is at the sectional view of wearing state (anemia of pregnant woman does not draw).

Fig. 3 paves the front view of state for this patent product.

Fig. 4 is the structural representation of tire sound sensor.

Fig. 5 is a representative instance of the present utility model.

This product comprises pick off bellyband 30 and the instrument box two parts composition that includes microcircuit system 40, as shown in Figure 1.

Wherein 1. bellyband 30 comprises the suitably belt body 31 of shape, is made by flexible, extensile material, divides internal layer 32 and outer 33.End is fixed into ring-type with nylon girdle button 34, as shown in Figure 2.The middle part broad of belt is easy to match with latter half of gestation anemia of pregnant woman abdominal part curve, and can farthest holds up pregnant abdominal part.2. several tire sound sensors 35 suitably are arranged on the belt body 31, and its contact surface is inside, directly, nondestructively contact with anemia of pregnant woman's abdominal part, as shown in Figure 3.Pick off is a sonic transducer, can be amplified exactly for the fetal heart sound under the background noise, and health is not had any harmful effect.3. lead 36 is routed between the inside and outside layer 32 and 33 of belt body 31, and the instrument box of microcircuit system 40 is equipped with in input.

Microcircuit system 40 links to each other with bellyband 30 by microcircuit interface 41.The box body of dress electronic circuit and respective element, pick off were imported socket, receiver J-Horner and display of the demonstration of fetal heart frequency numeral and other data or the like are provided in it comprised.Can monitor fetal heart sound with earphone.Preset count can carry out the fetal movement counting after the time.

Fig. 4 is the structural representation of tire sound sensor.Tire sound sensor (61) is by piezoceramic transducer (72) and enclose interior preamplifier (82) formation of shell (64).Because preamplifier places in the metal shell, eliminated outside electromagnetic interference, improved the signal to noise ratio of pick off, the earth terminal of piezoceramic transducer (72) is pasted on the inwall of thin metal shell (64) with conducting resinl, the ground wire of preamplifier (82) sticks on the crown cap (62) with conducting resinl, other parts adhere on the crown cap (62) with insulating cement with insulating, soft lead (84) connects the signal end of piezoceramic transducer and the signal input part of preamplifier (82), and the signal after the amplification is connected to bandwidth-limited circuit through coaxial cable (99).

Fig. 5 is the hardware chart of a representative instance of this technology.The tire sound sensor is made of the preamplifier in piezoceramic transducer and the inclosure shell.Because tire tone signal spectrum energy mainly concentrates in the frequency of 70Hz-110Hz, this utility model adopts IC1-A (1/4UPC 324) amplifier to constitute the active third-order low-pass filter that active three rank high pass filters and IC1-B (1/4 UPC 324), IC1-C (1/4 UPC 324) are formed, the free transmission range of the band filter that it is combined into is 70Hz-110Hz, it can isolate the tire tone signal from interference noise, to improve the signal to noise ratio that detects the tire tone signal.Tire tone signal after active high-pass filter and active low-pass filter check strap are logical is joined by the ground level of coupling capacitance C11 and power amplifying transistor N1, and promotion load earphone makes it to reduce the acoustical signal that ear can listen of being grown up.

This product has following characteristics:

1. with medical diagnostic equipment and health product molten be one, both alleviated anemia of pregnant woman's body burden, can carry out family's self-monitoring again;

2. adopt advanced tire sound sensor to carry out passive detection, anemia of pregnant woman and fetus are not had any harmful effect;

3. microcircuit system and the split of pick off bellyband are convenient to form series of products and model change;

4. product cost is low, and reasonable price can be accepted by numerous anemia of pregnant woman.

Claims

1, a kind of binder type tire sound monitor that is used for the measurement of tire sound, comprise tire sound sensor bellyband and the instrument box that band pass filter circuit is housed, it is characterized in that the tire sound sensor is made of the piezoceramic transducer of high piezoelectric constant and the preamplifier of inclosure shell, is connected with the instrument box by coaxial cable; Band filter in the instrument box constitutes by a slice four high guaily unit integrated circuit.

2, a kind of binder type tire sound monitor as claimed in claim 1, it is characterized in that: piezoceramic transducer (72) earth terminal is pasted on the inwall of thin metal shell (64) with conducting resinl, the ground wire of preamplifier (82) sticks on the crown cap (62) with conducting resinl, other parts adhere on the crown cap (62) with insulating cement with insulating, soft lead (84) connects the signal end of piezoceramic transducer and the signal input part of preamplifier (82), and the signal after the amplification is exported through coaxial cable (99).

3. binder type tire sound monitor as claimed in claim 1 is characterized in that: bellyband adopts flexible, extensile material to make, and divides inside and outside two-layer;

4. binder type tire sound monitor as claimed in claim 1, it is characterized in that: pick off bellyband (30) links to each other by microcircuit interface (41) with the instrument box (40) that includes the microcircuit system.

5. binder type tire sound monitor as claimed in claim 1, it is characterized in that: the free transmission range of band filter is 70-110Hz.