JPH02140138A - Applicator with scales - Google Patents

Abstract

PURPOSE:To accurately measure the temperature of a part to be heated in an organ in a thermal treatment, etc., to heat and extinguish cancerous cells by a high frequency electromagnetic wave, etc., by forming scales to show the depth of piercing on the external surface of a needle in an applicator or fitting a scaling member, which freely appears and disappears elastically, along the axial direction of the needle. CONSTITUTION:A needle 2 normally has the length in the degree of 10-20cm, however, scales 15 are engraved with prescribed intervals (for example, for the unit of 1mm or 10mm) from the tip of the needle on the external surface. If possible, numerical values to express a distance from the tip of the needle can be engraved with the respective scales and intervals between the engraved lines 15 can be colored with different colors as well. For the needle 2 of the applicator, the extremely fine needle is sometimes used. Then, when it is difficult to discriminate the above mentioned engraving or coloring with the naked eyes, instead of the scales to the needle 2 of an applicator 1, a scaling member 20 to freely protruded and disappear elastically can be provided parallelly with the needle 2.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an applicator for inserting a sensor into a cow's body to measure internal temperature, pressure, etc. The present invention relates to an applicator with a scale that allows the user to easily check the size by visual inspection.

(Prior Art) In thermotherapy, which eliminates cancer cells by heating them with high-frequency electromagnetic waves, it is essential to precisely measure the temperature of the heated part within the living body. 111
Various precision temperature sensors have been proposed as a first constant measure. Sensors that use thermocouples have traditionally been used as sensors suitable for such applications, and measurements are taken by pulling out a cable from the thermocouple embedded in the desired location within the cow's body and connecting it to the main body of the measuring instrument. There is.

In addition, in recent years, in order to eliminate the disadvantages of sensors with cables, we have developed a crystal oscillator with an auxiliary coil, taking advantage of the fact that the oscillation frequency of a specific cut crystal has a sharp temperature dependence. It is embedded inside the object to be measured as a sensor, and the sensor is intermittently irradiated with electromagnetic waves, and the reverberation signal of the sensor is extracted with an external probe while the electromagnetic wave irradiation is stopped, and its frequency is detected. A wireless type has been developed.

Furthermore, a sensor has also been proposed that intermittently irradiates an in-vivo crystal oscillator with ultrasonic waves instead of electromagnetic waves that are highly attenuated within the body, and detects the frequency of the ultrasonic wave as a reverberant signal. .

According to this sensor, it is possible to secure a much more convenient distance between it and an external measuring device than with conventional sensors that use electromagnetic waves, so it is possible to perform temperature measurements and measurements deep inside the body. Can be done.

By the way, all of the sensors mentioned above are generally inserted into a living body using an applicator shaped like a syringe, and the tip of the applicator is inserted into the vicinity of the affected area, and the The sensor is left in the desired position by pushing it out. .

However, with conventional syringe-type applicators, when inserting the long needle of the applicator into a living body, it is difficult to know whether the tip of the needle has reached the appropriate position near the affected area or not. 1. (Objective of the Invention) The present invention has been made in view of the problems of conventional applicators, such as those that have two sensors. II) It is an object of the present invention to provide an applicator that makes it easy for even non-experts to embed a sensor in a proper position by making it possible to know the embedding depth of the sensor. Summary) In order to achieve the above object, the applicator according to the present invention has a 1-1 groove formed on the outer surface of the needle to reduce the penetration depth, or a bullet 1-1 groove along the axial direction of the needle. A scale member that can freely appear and retract is attached to the.

(Example) Hereinafter, the present invention will be described in detail based on an example shown in the accompanying drawings.

FIG. 1 is an external view showing a first embodiment of the applicator according to the present invention, in which the applicator 1 includes a hollow portion 2 having an internal cross-sectional shape that allows the sensor IO to be loosely fitted and smoothly advanced; A grip part 3 that supports the needle 2, a piston 5 inserted from a hollow part in the part 3 to a hollow part in the needle 2, and a handle 7 formed in a "1" shape at the end of the piston 5. The needle 2 usually has a length of about 10 to 20 cm, but has a predetermined distance (for example, 1 mm or 10 cm) from the needle tip on its outer surface.
5, which is engraved with scale 15 in mm units),
If possible, each scale may also be engraved with a numerical value representing the distance from the tip, or if the thickness of the stem is such that it is difficult to engrave numbers, there may be a mark between the engraved lines 15. Each may be colored with a different color.

By doing this, the depth of the needle inserted into the living body can be determined.

By the way, part 2 of the applicator is extremely thin.
In many cases, it is difficult to identify with the naked eye due to multiple markings, coloring, etc. In such a case, Figure 2 (a) and (
Instead of providing a scale on the needle 2 of the applicator 1 as shown in b), a scale member 20 which can be elastically protruded and retracted may be provided parallel to the needle 2. This scale member 20 has a shaft mark J from the rear end 20a so that it can be easily recognized visually.
Graduation marks 15 are formed at predetermined intervals toward the opposite tip, and the scale member is supported by a hollow cylindrical support part 21 attached to the grip part 3. so that it can slide.

Therefore, as shown in FIG. 2(b), the axial self-portrait end of the hollow cylindrical support part 21 is open 1", and the scale member 20 is always urged in the protruding direction (to the left in the drawing). spring 25
The rear end of the spring 25 is locked by a step 26 formed on the inner periphery of the rear end of the support part 21, while the tip of the spring is integrally formed at a predetermined position on the board member 22. Tsuba 27
11 is in charge. When no negative force is applied to the tip of the scale member 20, the force of the spring 25 causes the scale member 20 to protrude forwardmost, and the flange 27 hits the locking step 28 at the tip of the support, causing -1 Hold the tip of the filling member 20 at the same position as the needle tip. .

When the needle is inserted into the living body, the scale member 20 cannot enter the living body, so its tip is pushed back by the skin, and the rear end 20a protrudes rearward against the force of the spring 25. The protruding length of the 1-4 embossed member 20 that protrudes rearward from the rear end of the support member 21 becomes the penetration depth of the needle 2. This protrusion length can be visually recognized by the scale 15 formed from the rear end of the scale member and the numerical value attached to the scale.
Also in this embodiment, by coloring each scale, it becomes easy to know the depth of the needle.The engagement relationship between the support part 21 and the scale member 20 is within the range that can achieve the same purpose. However, the scope of the present invention is not limited to what is shown in the drawings.For example, a flange as a stopper may be provided at the rear end of the scale member 20 (outside the support member 2I), By engaging this collar with the protrusion 26 at the rear end of the support member 21, the tip position of the scale member 20 may be determined. When implanting an implanted sensor, etc. into a living body using an applicator.

Since the practitioner can easily know the depth of the tip of the sword inserted into the living body by looking at it, the viscosity of the sensor's implantation position can be adjusted.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the configuration of an applicator according to the first embodiment of the present invention, and FIGS. . 1... Applicator 2... Hook 3... Gripping part 5... Piston 10... Sensor 2o... 1] Mold member 21-... Supporting member 25... Spring patent applicant Toyo Telecommunications stock trial

Claims (2)

[Claims] (1) An applicator for embedding a sensor for measuring internal temperature, pressure, etc. in a living body, which is equipped with a scale, characterized in that a scale indicating the penetration depth is formed on the outer surface of the needle portion of the applicator. applicator. (2) An applicator for embedding a sensor for measuring internal temperature, pressure, etc. in a living body, characterized by being provided with a scale member that elastically protrudes and retracts along the axial direction of the needle of the applicator. Applicator with graduated scale.