JPS607744Y2 - Medical tube device with balloon - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a medical tube device with a balloon.

For example, in a balloon catheter equipped with a balloon,
When inflating a balloon attached to the tip of a tube that is inserted into the urethra using a syringe, etc., there are differences in the thickness and length of the tube, so the gas injected with the syringe It is difficult to know how much the balloon is inflated just by detecting the amount, and the degree of inflation is largely determined by the feeling of the practitioner.

The purpose of the present invention is to obtain a device that can easily confirm the content of the balloon from the outside. The interposed check valve 3 is
It consists of a cylindrical valve housing 7 and a valve body 8 that snaps onto a valve seat 10 provided in the valve housing 7 by the spring force of a spring 9, and the syringe 17 is attached to the end of the valve housing 7 on the valve seat side. In the valve housing 7 and valve body 8 constituting the check valve 3, the valve housing 7 and the valve body 8 are made of a transparent or translucent material. The valve body 8 is provided with a concave hole 11 extending in the direction of movement thereof, and a pressure responsive element 4 that moves in accordance with the internal pressure of the balloon 1 is provided in the concave hole 11 to be elastically supported. shall be.

In the embodiment shown in FIG. 2, the pressure transducer 4 is formed by a pair of bellows tubes 13 made of an elastic material such as rubber that extend from a backing 12 provided on the seat of the valve body 8, and the top of the bellows tube 13 is The pressure receiving surface was designated as 13a.

However, the pressure-responsive element 4 has a bag body 14 made of an elastic body facing into the recessed hole 11 as shown in FIG. You can also apply this.

To connect the tube 2 to the valve housing 7, connect the tube 2 to the connection port 6 of the valve housing 7 using a tightening band 18 as shown in FIG. As shown in FIG. 5, the valve housings 7 are surrounded and connected.

When the valve body 8 is made of an elastic body such as transparent or translucent rubber, the valve body 8 can be seated on the valve seat 10 of the valve housing 7 by its elastic force.

Next, the operation of this device will be explained with reference to the embodiment shown in FIG.

When the syringe 17 is operated to pressurize gas into the valve housing 7, the valve body 8 is pushed by the pressure and opens, and the gas flows into the valve housing 7.
, flows into the balloon 1 via the tube 2, and
The bellows tube 12 serving as the pressure transducer 4 provided in the recessed hole 12 is extended.

After a certain amount of gas has been pumped in, the syringe 17
When the gas supply is released, the pressure inside the balloon 1 acts on the top pressure receiving surface 13a of the bellows tube 13, and the pressure and the elastic force are balanced against the elastic force of the bellows tube 13. Move it back to the correct position.

Therefore, if the position of the top surface of the bellows tube 13 is viewed from the outside through the check valve 3 made of a transparent or semi-transparent body, the pressure inside the balloon 1 and the degree of inflation thereof can be easily determined.

In the case shown in FIGS. 4 and 5, the pressure inside the balloon 1 and the elastic force of the bag body 13 or the spring 14 are balanced and the pressure of the balloon 1 can be determined in the same manner as described above. I can do it.

In this way, according to the present invention, the valve housing 7 and the valve body 8 constituting the check valve 3 are made of transparent or semi-transparent bodies, and the valve body 8 is provided with a recessed hole 11 along the direction of movement thereof. The valve body 8, in which the pressure transducer 4 that moves in response to the internal pressure of the balloon 1 is resiliently supported in the concave hole 11, is provided with the concave hole 11 along the direction of movement of the valve body. There is an effect that the inflation condition of the balloon 1 can be easily determined by simply observing the position of the pressure transducer 4 from the outside through the valve body 7 and the valve body 8.

[Brief explanation of the drawing]

In the drawings, Fig. 1 is a perspective view of one example of the embodiment of the present invention, Fig. 2 is an enlarged cross-sectional view of its main parts, Fig. 3 is a diagram of its operating state, and Fig. 4 is a perspective view of an example of the embodiment of the present invention.
The figure and FIG. 5 show a modification of FIG. 3. 1...Balloon, 2...Tube, 3
...Check valve, 4...Pressure responder,
5, 6... Connection port, 7... Valve housing, 8.
... Valve body, 11 ... Curved hole, 15 ... Spring, 17 ... Syringe.

Claims (1)

[Scope of utility model registration request] A check valve 3 interposed between a tube 2 equipped with a balloon 1 and a syringe 17 that pressurizes gas into the balloon 1
A spring 9 is attached to a cylindrical valve housing 7 and a valve seat 10 provided on the valve housing 7.
A connection port 5 for connecting to the syringe 17 is opened at the end of the valve housing 7 on the valve seat side, and a connection port 6 for connecting to the tube 2 is opened at the other end. In the valve housing 7 and the valve body 8 constituting the check valve 3 are made of transparent or semi-transparent materials, and the valve body 8 is provided with a recessed hole 11 along the direction of movement of the valve body 8. A medical tube device having a balloon, characterized in that a pressure responsive element 4, which moves according to the internal pressure of the balloon 1, is elastically supported and provided in the recessed hole 11.