SU387698A1 - ECHO PROBE FOR LOCAL ULTRASOUND DIAGNOSTICS - Google Patents

Description

one

The invention relates to the field of medicine.

Known are echo soundings for abdominal ultrasound diagnostics, comprising a cornus in the form of a cylindrical rod with a shaft and channels for supplying water to it, a speaker system, connecting cables and connectors. In the mine there is no iorpoden, but it is the same: kn.1 orazmo.m that it can ss (-) b |) days (1 and shifted but the entire length of the mine. And D10 ltr luroH riipo ;; aii neso-converse .

When scanning, the northerner is informed by the reciprocating movement of the lumeral: 1 st pump will not pump water from the ras of the 3 sides of the mine through rubber hoses and tubes. A piezoelectric transducer emits and receives reflections from irregularities, nroz, and ultrasound signals from the recording medium, which are amplified and indicated in the form of one-dimensional and two-dimensional echograms in the diagnostic apparatus.

Significant non-residuals of such cavitary echo probes are low scanning speeds and significant deceleration of the visibility when sounding.

In order to increase the scanning speed, reduce the dead zone during interference and to expand the functional diagnostic capabilities of the proposed echo probe, the acoustic system was made separated from the myoelemeiteite piezoelectric radiating lattice, which allows to carry out electronic sector-based ultrasound scanning of objects without mechanical displacement, and to a non-transceiver tool. r dO: M irairavlennyh-hriemnyh izozolelept, with a cover hermetically sealed cover and :; elastic material and installed nozzles connected to the bottom of the bottle. A cover of elastic material serves as a bath in which an echo probe is placed. The bath is liquefied with a liquid, such as soda, through the nozzles installed on the housing, and after inserting the echo probe into the cavity, the organs are sounded through a water delay to eliminate the dead zone.

The drawing schematically shows the proposed echo probe, the general view and section along A-A.

The proposed echo probe comprises a housing / in the form of a cylindrical rod within which there is a shaft 2 of circular cross section. Acoustic system is installed in the terminal part of the saddle: if so, system 3 is a separately combined tiaa. The acoustic system is made in the form of a multielement piezoelectric radiating acoustic penieTKii 4 and length of unannounced receiving piezoelectric elements 5. The acoustic grating contains a series of piezoelectricTie. where - is the acoustic length

the waves. Such an acoustic grating, with the alternate excitation of the emitters, allows sectoral ultrasound scanning in the cross section of the transverse radiators at almost any speed. Several non-directional piezoelectric elements 5 are used as acoustic receivers, ensuring reliable reception of reflected echoes in the scanning sector. Piezo-acoustic devices of the acoustic grating and receiving piezoelectric elements are electrically connected to connector 6 by a multi-conductor cable 7. Part of the body, inserted into the cavity, is housed in an elastic case 8. The upper part of the case is sealed tightly on the ring 9. On the outer part of the body 1, the echo probe count is plotted in the ring. In the outer part of the ring 9 there are two openings with plugs .W for pumping liquid into the cover.

On the working surface of the echo probe are marked with a dividing cost of 5 lsh for counting the depth of insertion of the echo probe into the cavity.

The proposed cavity echo probe is used in conjunction with ultrasound diagnostic devices equipped with a transmitting device providing varying in magnitude reversible alternation of excitation of individual piezo emitters of the transmitting acoustic grating. Spherical ultrasounds emitted by individual piezotransducers: sound pulses interfere, and a resulting ultrasound signal is generated, propagating along a selected direction in the scanned sector.

The transmitting acoustic array is installed in the echo probe so that the scan will originate in the longitudinal direction relative to the body of the echo probe. When the organs are examined, the working part of the echo probe is introduced into the cavity, and the bath is filled with water and injection by means of a spike through the holes provided for this purpose in the body of the echo probe. By turning the body of the echo probe

0 in the ring, an inspection of the cavity is achieved. The signals reflected from the inhomogeneities of the biological medium are indicated on an oscilloscope television tube. A high scanning speed allows the use of an oscilloscopic tube with a low afterglow, to obtain a raster two-dimensional image, to observe the dynamics of the internal organs and to conduct targeted echography. The use of a local bath eliminates the dead zone during the examination, makes it possible to observe echograms from the surface of the cavity walls, which greatly expands the scope of the study. The cavity echo probe is structurally simple and convenient in operation.

Subject invention

An echo probe for cavity ultrasound diagnostics, comprising a housing in the form of a cylindrical shaft with a shaft, a speaker system, connecting conductors and connectors, characterized in that, in order to expand the functional diagnostic

35 possibilities and support of the margine field of view, acoustic system vyiolnsia separately combined with a multielement piezoelectric radiating lattice and a number of omnidirectional receiving piezoelectric elements,

 moreover, a tightly reinforced pz case of elastic material and nozzles connected to the case cover are installed on the case.