JPS601745Y2 - 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 in which the content of the balloon can be easily checked from the outside, and between the tube 2 that includes the balloon 1 and the syringe 16 that pressurizes gas into the balloon 1. The interposed check valve 3,
It consists of a cylindrical valve housing 3a and a valve body 3b that snaps onto a valve seat 9 provided in the valve housing 3a by the spring force of a spring 8, and the syringe 16 is attached to the end of the valve housing 3a on the valve seat side. In the valve body 3b of the check valve 3, a concave hole 10 is provided along the direction of movement of the valve body 3b, and the concave hole 10 is provided in the valve body 3b of the check valve 3 in the direction of movement thereof. A pressure response element 4 that moves in response to the internal pressure of the balloon 1 is provided in the hole 10 with elastic support,
The pressure transducer 4 is provided with a rod-shaped display piece 5 that passes through the end of the valve body 3b on the side facing the valve seat and projects into the syringe 16 through the connection port 6.

In the embodiment shown in FIG. 2, the pressure transducer 4 is formed by a pair of bellows tubes 12 made of an elastic material such as rubber that extend from a backing 11 provided on the seating portion of the valve body 3b. The pressure-receiving surface 12a was used as the display piece 5, and the display piece 5 was a thin rod that abutted against the pressure-receiving surface 12a and whose tip protruded outside the valve housing 3a.

However, the pressure-responsive element 4 is not limited to the above-mentioned one, and a piston piece 14 or the like resiliently repelled by a spring 13 may be applied thereto, as in the embodiment shown in FIG.

Note that 15 is a stopper for the piston piece 14. Next, the operation of this device will be explained with reference to the embodiment shown in FIG.

When the syringe 16 is operated to pressurize gas into the valve housing 3a, the valve body 3b is pushed away from the valve seat 9 by the pressure, and the gas flows into the balloon 1 through the valve housing 3a and the tube 2. At the same time, the bellows tube 12 serving as the pressure transducer 4 provided in the recessed hole 10 is extended.

After a certain amount of gas has been pumped in, the syringe 16
When the supply of gas by the bellows tube 12 is released, the pressure inside the balloon 1 acts on the top pressure receiving surface 12a of the bellows tube 12, and the pressure and the elastic force are balanced against the elastic force of the bellows tube 12. It is moved back to the matching position, and along with this, the display piece 5 is moved back as shown in FIG.

Therefore, by checking the end position of the display piece 5 from the outside, it is possible to check the pressure inside the balloon 1, that is, the corresponding inflation state of the balloon 1.

When the entire valve body 3a is made of an elastic body such as rubber, it is also possible to seat the valve body 3b on the valve seat 9 by the elastic force of the valve body 3b itself.

In this way, according to the present invention, the valve body 3 of the check valve 3
A recessed hole 10 along the moving direction is provided in b, and the recessed hole 10
A pressure transducer 4 that moves according to the internal pressure of the balloon 1 is provided inside the balloon 1, and a connection port 6 with the syringe 16 is provided in the pressure transducer 4, passing through the end of the valve body 3b on the side opposite to the valve seat. Since a bar-shaped display piece 5 is provided that protrudes into the syringe 16 through the syringe, the degree of inflation of the balloon 1 can be easily determined by looking at the position of the display piece 6, which is generally transparent or translucent and projects into the syringe. It has the effect of being able to.

[Brief explanation of the drawing]

In the drawings, Fig. 1 is a perspective view of an example of the implementation 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 implementation of the present invention.
The figure shows a modification of FIG. 3. 1...Balloon, 2...Tube, 3
...Check valve, 3a... Valve housing, 3b...
... Valve body, 4 ... Pressure response element, 5 ...
・Display piece, 6, 7...Connection port, 10...Concave L
16------Syringe.

Claims (1)

[Scope of utility model registration request] A check valve 3 interposed between a tube 2 provided with a tube 1 and a syringe 16 for pressurizing gas into the balloon 1 is connected to a cylindrical valve housing 3a and a valve seat provided in the valve housing 3a. 9 and a valve body 3b that is elastically attached to the valve body 3b by the spring force of a spring 8. A connection port 6 for connecting to the syringe 16 is opened at the end of the valve housing 3a on the valve seat side, and a connection port 6 for connecting to the tube 2 is opened at the other end. In the case where the connecting lower is open, a recessed hole 10 is provided in the valve body 3b of the check valve 3 along the direction of movement thereof, and a pressure responsive element 4 is moved into the recessed hole 10 according to the internal pressure of the balloon 1. A rod-shaped display piece is provided on the pressure transducer 4 with elastic support, and extends through the end of the valve body 3b on the side opposite to the valve seat and projects into the syringe 16 through the connection port 6. A medical tube device having a balloon comprising: 5.