JPH0213439A - Piercing needle guide instrument for ultrasonic thickness detector - Google Patents

Abstract

PURPOSE:To simplify sterilization work by separating a guide instrument into a fixed portion and a guide portion and disposing a sterilizing cover therebetween. CONSTITUTION:A fixed portion 22 is fitted to a thickness detector 10 by a fixing screw 22a and a sterilizing rubber boot 26 is mounted in such a manner as to wrap both the fixed portion 22 and the thickness detector 10. An engaging groove 24 of a guide chip 24 is engaged with an engaging projection 22b of the fixed portion 22 through the sterilization rubber boot 26, whereby a guide instrument is installed on the thickness detector 10. While a tomographic image is observed, a piercing needle 16 is stuck into a tested body through a guide hole 24b of the guide chip 24, so that the piercing needle 18 is correctly stuck toward an aimed portion of the tested body. Accordingly, sterilization conducted on every operation is reduced to the guide portion only so as to remarkably lessen sterilization work.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an ultrasonic probe attached to a probe for inserting a puncture needle into a target site while observing an ultrasonic image. This invention relates to the structure of a puncture guide device for children.

[Prior art] Puncture of a target site is performed using an ultrasound diagnostic device.This involves first transmitting and receiving ultrasound waves into the subject using the ultrasound diagnostic device, and then receiving and processing the reflected echoes. It displays a tomographic image inside the subject. Then, while observing this tomographic image, a puncture needle is inserted into the gallbladder or liver in the abdomen, thereby making it possible to collect body fluids and tissues, for example.

FIG. 3 shows a conventional guide instrument for performing ultrasonic puncture as described above. By bringing the transducer section 14 into contact with the surface of the subject and transmitting and receiving ultrasonic waves, a tomographic image can be drawn on the display on the main body side.

The guide instrument 16 for puncture is the probe 10.
It is attached to the probe by a fixing screw 16a and a movable plate 16b, and the movable plate 16b is slidable in order to fix it to a plurality of probes 10 of different sizes.

Further, a guide hole 16c for guiding the puncture needle 18 is formed through the guide hole 16C, and the puncture needle 18 is formed in this guide hole 16C.
Insert. Then, the puncture needle 18 is inserted into the target site without confirming the insertion direction of the puncture needle 18 with respect to the direction in which the ultrasonic waves are radiated by the probe 10.

[Problem to be solved by the invention] However, in such a conventional guide device 16, 1
Sterilize (disinfect) the probe 10 and guide instrument 16 after each puncture.
There was a problem that the sterilization work that had to be done was complicated.

Conventionally, when only the probe 10 is used during open surgery, the probe 10 is covered with a sterile cover, or when a puncture surgery is performed, a guide instrument 16 and a puncture needle 18 are provided. Therefore, simply removing the sterile cover will not accomplish the purpose.

OBJECTS OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide a puncture guide instrument for an ultrasound probe that can simplify sterilization work.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a puncture guide device for an ultrasonic probe that is attached to a probe and guides a puncture needle. a fixing part having a protrusion for fixing a guide instrument to the probe; a guide part having a fitting groove that removably fits into the fitting protrusion of the fixing part and guiding a puncture needle; The present invention is characterized in that a sterilization cover is arranged between the fixed part and the guide part.

[Function] According to the above configuration, the guide instrument is fixed to the probe by the fixing part, and the sterile cover is placed so as to cover the probe and the fixing part of the guide instrument. Then, the fitting protrusion of the fixing part is fitted into the fitting groove of the guide part through the sterile cover.

In this way, only the guide part for inserting and guiding the puncture needle needs to be sterilized, and by making the guide part simple or disposable, the sterilization work can be significantly reduced. Reduced.

[Embodiments] Hereinafter, preferred embodiments of the present invention will be described based on the drawings.

FIG. 1 shows the state in which the puncture guide device for an ultrasound probe of the present invention is applied, and FIG. 2 shows the state in which the guide device and the fixed portion of the guide device of FIG. The condition is shown.

A feature of the present invention is that, in order to simplify the sterilization of the probe 10 and the guide instrument, the guide instrument is separated into two parts and covered with a sterilization cover.

As shown in FIG. 2, the guide device is composed of a fixed part 22 and a guide tip 24 as a guide part. The fixing part 22 is made of a metal material and has a configuration for fixing a guide instrument to the probe 10, and in the embodiment, the fixing screw 22 is
A simple structure with a is used.

As shown in the figure, a fitting protrusion 22b for connecting with the guide chip 24 is formed on the fixing portion 22 so as to protrude outward.

-4= On the other hand, the guide chip 24 has the fitting protrusion 2 of the fixing part 22.
2b is formed with a fitting groove 24a which is removably fitted, and this fitting groove 24a is formed around the circumference with elasticity.

The guide chip 24 may be made of a metal material, but in this embodiment it is made of a plastic material, and the fitting force during fitting is determined by the hardness of the plastic material, the thickness of both sides of the fitting groove 24a, etc. or set to an appropriate value.

Further, a guide hole 24b having a size through which the puncture needle 18 can be inserted is formed through the guide tip 24.

As shown in FIG. 1, a sterile rubber boot 26 serving as a sterile cover is provided between the fixing portion 22 and the guide tip 24 in this embodiment. The sterilized rubber boots 26 are made of synthetic rubber or latex (raw rubber), and are relatively thin and strong in tensile force.

The embodiment consists of the following two configurations, and when puncturing, first the fixing part 22 or the fixing screw 22 is
a to the probe 10, and this fixed part 22
A sterile rubber boot 25 is wrapped around both the probe 10 and the probe 10.
Or covered. Then, the fitting protrusion 2 of the self-fixing part 22 is attached to the front.
2b is fitted with a guide tip 24 via a sterile rubber boot 26.
The fitting groove 24a of the guide device 10 is fitted into the fitting groove 24a of the probe 10, and thus the guide instrument is attached to the probe 10.

By operating the probe 10, the operator can display a tomographic image of the inside of the subject on the display 2 of the ultrasound diagnostic apparatus main body. Therefore, by inserting the puncture needle 18 into the subject through the guide hole 24b of the guide chip 24 without observing the tomographic image, the puncture needle 18 can be directed to the target site of the subject and puncture accurately. I can do it.

[Effects of the Invention] As explained above, according to the present invention, the guide instrument is separated into a fixing part and a guide part, and a sterile cover is placed between the two, so that it is possible to perform a puncture operation every time. The sterilization can be reduced to only the guide section, and the sterilization work can be significantly reduced.

Furthermore, by making the guide part disposable, sterilization work can be completely eliminated.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a state in which a puncture guide device for an ultrasound probe according to the present invention is attached to a probe, and FIG. 2 is an explanatory diagram showing a state in which the guide device of the present invention is separated. FIG. 3 is a perspective view showing the structure of a conventional puncture guide device for an ultrasound probe. 10... Probe 14... Vibrator section 16... Conventional guide instrument 18... Puncture needle 22... Fixed part 22b constituting the guide instrument.
... Fitting protrusion 24 ... Guide chip (guide portion) 24a that constitutes the guide instrument ... Fitting groove 24b ... Guide hole 26 ... Sterile rubber boot (sterile cover). (b) Figure 3

Claims (1)

[Claims] (1) In a puncture guide device for an ultrasonic probe that is attached to the probe and guides the puncture needle, a fixing part that has a fitting protrusion at a predetermined position and fixes the guide device to the probe; , a guide part for guiding the puncture needle and having a fitting groove that removably fits into the fitting protrusion of the fixing part, and a sterile cover is disposed between the fixing part and the guide part. A puncture guide device for an ultrasound probe, characterized in that the puncture guide device is configured to do so.