JPH04183461A - Ultrasonic diagnostic and therapeutic device - Google Patents

Abstract

PURPOSE:To simultaneously carry out the ultrasonic diagnosis and therapy by providing an ultrasonic vibrator element installed in the vicinity of the top edge of a flexible wire and a thrombus removing means which is inserted into the wire of the flexible wire and is equipped with a thrombus removing tool at the top edge. CONSTITUTION:When the top edge of a catheter 12 approaches the position of thrombus 30, an operator starts a motor 20, and a flexible wire 16 and an ultrasonic vibrator element 18 integrally turn, and ultrasonic wave is received and transmitted in the 360 deg. direction. The obtained tomogram is displayed on a CRT arranged on the body of an ultrasonic diagnostic and therapeutic device 10, and an operator confirms the position of thrombus by observing the tomogram. Then, a guide wire is pulled out, and a middle wire 24 is inserted inside the flexible wire 16. When the middle wire 24 is pulled out from the flexible wire 16, a thrombus removing tool 26 is opened to a prescribed dimension. Further, the middle wire 24 is turned, and the thrombus 30 is scraped by a thrombus removing tool 26, and the drug liquid (thrombus removing agent) is poured inside the middle wire 24 from a drug liquid pouring means 22, and the thrombus 30 is dissolved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an ultrasonic diagnostic treatment device that is inserted into a blood vessel to obtain a tomographic image inside the blood vessel and treat a desired site within the blood vessel.

[Prior Art] Conventionally, ultrasonic diagnostic devices have been known that insert a probe into a blood vessel to obtain a tomographic image of the inside of the blood vessel. For example, to remove a blood clot in a blood vessel, other means (e.g. laser surgical instrument) may be used.
Removal surgery was required.

[Problems to be Solved by the Invention] According to the conventional ultrasonic diagnostic apparatus described above, only the situation of the stenotic part in the blood vessel is visualized, so removal is performed after visualizing the situation of the stenotic part in the blood vessel. During surgery, it is not possible to perform the removal surgery while looking at the stenotic area, and there is a problem in that it is difficult to grasp the exact location of the stenotic area. Furthermore, treatment for arteriosclerosis varies depending on the hardness of the blood vessels, and if the treatment is incorrect, there is a problem that the brittle blood vessels may rupture due to the treatment.

Purpose of the Invention The present invention has been made in view of the above-mentioned conventional problems,
The purpose is to provide an ultrasonic diagnostic treatment device that can perform ultrasonic diagnosis and treatment at the same time.

[Means for Solving the Problems] In order to achieve the above object, an ultrasonic diagnostic treatment device according to the present invention includes a hollow catheter inserted into a blood vessel, and a hollow flexible catheter held inside the catheter. It is characterized by comprising a wire, an ultrasonic transducer provided near the tip of the flexible wire, and a thrombus removal means inserted into the flexible wire and equipped with a thrombus removal tool at the tip.

[Operation] According to the above configuration, it is possible to obtain a tomographic image of a blood vessel or the like using an ultrasonic transducer provided on a flexible wire, and furthermore, while confirming the tomographic image, a thrombus removal means is used to remove, for example, the inside of a blood vessel. This makes it possible to remove blood clots and the like that have formed in the body.

[Example] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view of an ultrasonic diagnostic treatment device according to the present invention;
FIG. 2 is a diagram when the ultrasonic diagnostic treatment device according to the present invention is inserted into a blood vessel.

The ultrasonic diagnostic treatment device 10 includes a catheter 12 made of synthetic resin or the like and forming an ultrasonic window.
The catheter 12 has a rounded tip so as not to get caught in living tissue, and has a rounded tip depending on the thickness of the blood vessel.
．． They are available in multiple thicknesses between 5 and 3 mm.

Inside the catheter 12, a hollow flexible wire 16 made of a corrosion-resistant material such as stainless steel is supported by an O-ring 14 made of silicone rubber or the like.
An ultrasonic transducer 18 that transmits and receives Hz ultrasonic waves is arranged.

Furthermore, the rear end of the flexible wire unit 6 is connected to a motor 20 as a driving means, and by rotating the flexible wire 16 with the motor 20, the ultrasonic transducer 18 is
It is possible to obtain a 360'' tomographic image of a blood vessel by rotating the image by 360''.

Moreover, inside the flexible wire 16, a medium wire 24 is provided.
At the tip of the middle wire 24 is a thrombus removal tool made of a plurality of linear members made of a corrosion-resistant material such as stainless steel that expands to a predetermined size when passed through the tip of the flexible wire. 26 are provided.

Near the rear end of the catheter 12, a liquid drug injection means 2 is provided.
2 is arranged, and a medium wire 2 is connected from the drug solution injection means 22.
The drug solution can be injected into the blood vessel through the inside of the tube.

Next, the operation of this embodiment will be explained.

Prior to inserting the ultrasonic diagnostic treatment device 10 into the blood vessel 28, the position of the thrombus 30 causing thrombus is confirmed from outside the body by X-ray photography, ultrasonic diagnosis, etc.

Then, a guide wire (not shown) thick enough to be inserted inside the flexible wire 16 is inserted into the blood vessel 28 near the thrombus 30, and then the flexible wire 16 is fitted onto the guide wire for ultrasonic diagnosis. The treatment device 10 is inserted into a blood vessel.

Then, the ultrasonic diagnostic treatment device ft1O is guided by the guide wire and can move smoothly within the blood vessel 28. At this time, the insertion length of the flexible wire 16 is adjusted so that the tip of the flexible wire 16 does not protrude beyond the tip of the catheter 12.

Then, when the tip of the catheter 12 approaches the position of the thrombus 30, the operator starts the motor 20 to rotate the flexible wire 16, which causes the ultrasonic transducer 18 to rotate together with the flexible wire 16 in the 360'' direction. 360' by transmitting and receiving ultrasonic waves and processing this signal.
A tomographic image can be obtained.

Furthermore, this 360@ tomographic image is an ultrasonic diagnostic treatment equipment fl!
It is displayed on a CRT placed in the main body of i'IO, and the operator confirms the location of the thrombus by looking at the tomographic image displayed on the CRT.

Then, the guide wire is pulled out and the middle wire 24 is inserted inside the flexible wire 16.

When the middle wire 24 passes through the flexible wire 16, the thrombus removal device 26 opens to a predetermined size (see FIG. 2).

Further, the medium wire 24 is rotated to scrape off the thrombus 30 with the thrombus remover 26, and at the same time, a medical solution (thrombolytic agent) is injected into the inside of the medium wire 24 from the medical solution injection means 22, and the thrombus 30 is dissolved by the second chemical solution. .

In the above-mentioned embodiment, the thrombus removal tool 26, which is composed of a plurality of linear members that mechanically scrapes off the thrombus 30, is used as the thrombus removal tool, but the present invention is not limited to this. , the thrombus 30 may be excised.

[Effects of the Invention] As explained above, according to the ultrasonic diagnostic treatment device according to the present invention, not only can blood vessels and the like be diagnosed by ultrasonic waves, but also the position of a thrombus, for example, can be detected using a tomographic image obtained by the ultrasonic diagnosis. It is possible to safely and accurately remove the thrombus while confirming this.

Furthermore, after removing a thrombus or the like, it is possible to quickly perform an ultrasonic diagnosis of the state inside the blood vessel after the removal.

[Brief explanation of drawings]

FIG. 1 is a sectional view of the ultrasonic diagnostic treatment device according to the present invention, and FIG. 2 is a diagram showing an example of the operation when the ultrasonic diagnostic treatment device according to the present invention is inserted into a blood vessel. 12... Catheter 14... O-ring 16... Flexible wire 18... Ultrasonic transducer 20... Motor 22... Liquid drug injection means 26... Thrombus removal tool

Claims (1)

[Scope of Claims] A hollow catheter inserted into a blood vessel, a hollow flexible wire held inside the catheter, an ultrasonic transducer provided near the tip of the flexible wire, and the flexible wire. An ultrasonic diagnostic treatment device comprising: a thrombus removal means inserted into a wire of the invention, and having a thrombus removal device at its tip.