SU363496A1 - SENSOR FOR HYSTEROGRAPHY - Google Patents

Description

one

This invention relates to a median technique.

Sensors for hysterography are known, comprising a housing with a flange and a bracket, a platform for fastening a spring steel plate, a screw and a transmitting rod made in the form of a cylinder with a plate-like base.

However, such sensors are not reliable enough in the work, and technologist 1I of their manufacture is very complex.

In order to eliminate these shortcomings, the proposed sensor is equipped with an additional electrode, made in the form of a foil plate, which, by means of an absorber, is connected to the transmitting rod and plastic from the P10Y steel surface.

FIG. 1 schematically shows the sensor proposed for hysterography in axial section; FIG. 2 is a view along arrow L in FIG. one.

The housing / sensor has a cylindrical shape and wave, naiimer, of duralumin. One side of the housing is closed and represents the base 2, and the open side is equipped with a flange 3 and serves as a support when using the sensor. On corundum island 2 / a bracket 4 is fastened. A strap passes through it, with the help of which the sensor is attached to the housing. Inside the corius / platform, consisting of two racks 5 and 6, one side of the plastic of 7 pz steel spring is fixed on the rack 5; The second end of this plate lies loosely on the rack 6. Perier) D COOL to the planar plate of the plate 7 through its center passes the screw 8, by means of which the round plate 9 from the foil, which is an additional electrode, is connected to the transfer plate, the rod 10 and plastipkoy 7. Nonbreeding rod 10 made in the form of cyclidra with a plate base and a stripped contact surface and //. The transmitting rod somewhat protrudes from the plane as the support surface of the flanium 3, nanr) 1 meter, 1.5 m.ph. The cover 12 with the central opening of the nodes of the transmitting rods is reinforced with racks B and 6 of the sensor plate. Transmitting stub JO, racks 5, 6 ji cover 12 made nz dielectric material.

With the aid of a belt, the sensor is attached to the anterior abdominal wall of the footgate, and its co-tact with the latter is provided by the support surface area of flange 3. The sensor is mounted on the national flap between the contractions of the uterus. Such a sensor setup is 1 pass. The plastic 9 of the foil and the axis 2 of the sensor body form between them a flat air condenser, which is its electrodes. At the time of uterine contraction, the transmitting rod 10 is connected to the abdominal wall by the contact surface 11 by means of a sensor and transmits a static initial pressure to the spring steel plate 7. The latter is bent, and the plate electrode I connected to it approaches the base 2 of the housing / sensor. When the uterus muscles are relaxed, the pressure on the transmitting rod W is stopped, the plate 7 returns to its original position, and the distance between the plate-electrode 9 and the base 2 becomes 15 original when the sensor is installed. With even greater relaxation of the muscles of the uterus, exceeding its initial tonic state, in the area of the sensor there is a consistent lowering of the abdominal wall 20. As a result, the spring plastika 7 is rectified, which leads to an increase in the distance between the electrodes of the air condenser. Thus, when the uterus contracts, an increase in the air condenser capacity occurs, and when it is relaxed, a decrease occurs. The sensor is connected to the contour of the high-frequency generator of the device that serves to register the contractions of the uterus. In circuit 30, the sensor plays the role of a variable capacitor. A change in its capacitance sync, ronno, with uterine contractions leads to a change in the generator frequency, which is detected by a frequency-phase detector followed by amplification with a terminal 35 sillitel device cascade and recording a moving paper tape with a black-letter galvanometer. The sensor is connected to the contour of the high-frequency generator of the device so that its 40 body is a grounded capacitor electrode. Thus, the housing / sensor performs the function of the screen from external interference, and eliminates the interdependence of several sensors during multichannel recording of uterine contractions. Subject of Invention A hysterography sensor, comprising a housing with a flange and a bracket, a platform for securing a spring steel plate, nt and a transmitting rod made in a cylinder with a plate-like base, in order to simplify its manufacturing, as well as increasing the reliability of the research, it is equipped with an additional electrode, filled in the form of a foil plate, the torus is connected with a transfer rod and a plate made of spring steel by means of a screw.