JPH0614955A - Bolus - Google Patents

Abstract

PURPOSE:To allow an efficient diagnosis and treatment by forming an opening on the bottom face, and providing a watertight jointing means around the opening in a bolus inserted between an applicator generating ultrasonic waves and a living body at the time of the treatment. CONSTITUTION:A bolus l inserted between an applicator (transducer) 7 and living body in a therapeutic device radiating ultrasonic waves or electromagnetic waves to the treatment target portion of a testee for a thermotherapy or a pulverization therapy is made of urethane rubber or vinyl chloride into a ring- like bellows structure. An opening l is formed on the bottom face of the bolus 1, an adhesive sheet 2 is provided on the lower face of the bottom face 12 around the opening 11, and the bolus 1 is watertightly jointed to the body surface. A preset quantity of the deaerated water 5 from a deaerated water feeding device is injected into the watertightly jointed bolus l, and a treatment is applied while the applicator 7 is dipped in the deaerated water 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a therapeutic device for irradiating an ultrasonic wave or an electromagnetic wave generated outside the body to a therapeutic target region in a subject (living body) to perform a heating treatment or a crushing treatment, and particularly to a therapeutic treatment. At this time, it relates to a bolus that is interposed between an applicator that generates ultrasonic waves or electromagnetic waves and the body surface of a living body.

[0002]

2. Description of the Related Art In this type of treatment device, a transducer (applicator) and a living body are aligned with a rubber water bag and an ultrasonic gel in order to guide the ultrasonic waves generated by the applicator into the subject without loss. I have been in close contact. That is, since the ultrasonic waves do not propagate in the air, the ultrasonic waves from the transducer were sent to the inside of the living body through water whose acoustic characteristics are similar to those of the living body. The water was held by a flexible thin rubber water bag (bolus) and applied to the body surface. Further, when the adhesion was still insufficient, ultrasonic gel was applied to the body surface and a water bag was applied.

[0003]

The prior art as means for aligning and closely contacting the transducer (applicator) and the living body has the following problems. That is, in the ultrasonic gel, air easily intervenes due to its viscosity. Also,
In the water bag (bolus), if the unevenness of the body surface is fine, it can not be absorbed completely and air remains between the bottom surface of the bolus and the body surface. Therefore, as a result, undesired things such as reflection of ultrasonic waves occur, and treatment and diagnosis cannot be performed well.

In view of the above, the present invention provides a bolus capable of guiding ultrasonic waves or electromagnetic waves generated by an applicator into a subject without causing an air layer between the bolus and the surface of the subject. With the goal.

[0005]

In order to overcome the problems, the present invention has an opening formed on the bottom surface of a bolus, and a connecting means for water-tightly connecting the bottom surface of the bolus to the surface of a subject body around the opening.

Further, the bolus is provided with a deaerated water supply means for supplying deaerated water into the bolus through a pipe and a drainage means for discharging the deaerated water in the bolus.

[0007]

According to the present invention, since the bottom surface of the bolus is open, the degassed water in the bolus directly contacts the body surface.
Even if there are fine irregularities on the body surface, it is filled with degassed water, and since degassed water is not viscous and air does not intervene, air does not intervene at all. At this time, since the bottom surface of the bolus is watertightly bonded to the surface of the subject by the bonding means, degassed water does not flow out. Therefore, the ultrasonic waves generated by the applicator are not reflected, are incident on the subject without loss, and the therapeutic effect is improved.

Further, since the degassed water supply means and the drainage means are connected to the bolus via a conduit such as a tube,
After water-tightly connecting the bottom surface of the bolus to the surface of the subject with the connecting means, supply degassed water into the bolus from the degassing water supply means, and after treatment, drain the degassed water in the bolus with drainage means. By doing so, treatment can be performed without spilling deaerated water and contaminating the bed or the floor surface supporting the subject.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a cross-sectional view showing the configuration of one embodiment, in which a bolus 1 is
It has a ring-shaped bellows structure to absorb irregularities on the body surface, and is made of thin, transparent and flexible rubber or polymer material such as urethane rubber and vinyl chloride. Also, an opening ₁₁ is formed on the bottom surface of the bolus 1,
The lower surface of the bottom surface 1 ₂ of the opening periphery, is adhered to the subject surface, adhesive seal 2 as coupling means for watertight coupling is provided with a bottom 1 ₂ to the subject surface.

Next, the operation will be described with reference to FIG. 2 in which the bolus of FIG. 1 is applied to an ultrasonic therapeutic apparatus. Bottom 1 ₂ bolus 1 patient (subject) 3 of the body adhesive on Table seal 2
Glued in. The bolus 1 is supported by a holding means (not shown) or a holding means for an applicator described below so that the bolus 1 does not spill when degassed water is injected into the bolus 1. A predetermined amount of degassed water 5 generated by the degassed water supply device 4 is injected into the bolus 1 via the supply tube 6. Since this time the bottom 1 ₂ bolus 1 is attached to the body of the watertight manner the patient 3 with adhesive seal 2, degassed water 5 in the bolus 1 is not flow out from the bottom, deaerated water and body Direct contact and fill the irregularities on the body surface.

In this state, the ultrasonic transducer (applicator) 7 equipped with the bolus 6 is immersed in the degassed water 4 of the bolus 1 at the bottom of the bolus 6 to supply high frequency power to the applicator 6 Perform sonication. After the treatment, the used degassed water 5 in the bolus 1 is sucked by the suction tube 8 and discharged into the drain tank 9 to remove the bolus 1.

FIG. 3 is a block diagram of the degassed water supply device 4 of FIG. 2, in which 41 is a tank for storing tap water, and the tap water in the tank 41 is controlled by a thermostatic device 42 in consideration of the patient at the time of supply. Maintained at about body temperature. The tap water in the tank 41 is then pumped to the pure water treatment filter 43 and the degassing treatment filter 44.
When the degassed water is supplied to the bolus 1 by continuously refluxing using 45, the path of the electromagnetic valve 46 is switched to supply the degassed water from the supply tube 6.

After use, the self-priming pump 47 is operated to suck the used degassed water from the suction tube 8 and dispose of it in the drain tank 9. In FIG. 3, degassed water supply means 6 and 41 to 46 and degassed water drainage means 8 and 9 and 47. In addition, in FIG. 2, an auxiliary mat is used to support the patient 3 so that the auxiliary bolus 1 does not tilt and the deaerated water 5 in the bolus does not spill.
The bolus 1 is always kept horizontal.

[0014]

[Modifications] In the above embodiment, the entire bolus has a bellows structure made of a flexible material, but only the lower part may be made of a flexible material or an opaque material. However, if it is made of a transparent flexible material as shown in FIG. 1,
Positioning is easy because the applicator is not visible from the outside and does not have close contact with the patient's body surface. Further, in the embodiment, the joining means is an adhesive seal, but other joining means, for example, an O-ring is provided around the opening of the bolus, and the bottom surface of the bolus is pressed against the body surface to maintain the watertightness between the bottom surface of the bolus and the body surface. You may

Further, in the embodiment, the applicator 7 equipped with the bolus 6 was immersed in the deaerated water contained in the bolus 1 (in this case, if the bolus 6 is the main bolus, the bolus 1 can be called an auxiliary bolus). The applicator 6 may be directly immersed in the deaerated water in the bolus 1. Further, it is possible to directly attach the bolus of the present invention to the applicator, the bolus having the present invention having an opening on the bottom surface and having a connection means for contacting the body surface of the patient and maintaining the watertightness around the opening.
In this case, it is preferable that the bolus be provided with deaeration water injection / drainage holes to circulate the deaeration water. The present invention can also be applied to treatment using electromagnetic waves or high-frequency current, and can improve the adhesion between the applicator and the patient's body surface. In this case, the bolus water is pure water for electromagnetic waves and saline for high frequency currents.

[0016]

[Effect] According to the present invention, since there is no possibility that an air layer is interposed between the transducer (applicator) and the living body, the progress of ultrasonic waves and the like is not hindered, and diagnosis / treatment can be efficiently performed. In addition, since hot spots caused by the air layer can be prevented in the warming treatment with high-intensity ultrasound, the safety for the patient can be improved.

[Brief description of drawings]

FIG. 1 is a sectional view showing a configuration of an embodiment of the present invention.

FIG. 2 is a schematic diagram showing an overall configuration of an ultrasonic treatment system using the bolus of FIG.

FIG. 3 is a diagram showing a configuration of a degassed water supply device in FIG.

[Explanation of symbols]

1 ... bolus 1 ₁ ... opening 1 ₂ ... bottom 2 ... adhesive seal (coupling means) 4 ... degassed water supply unit 5 ... degassed water 6 ... supply tube (pipe) 7 ... applicator 8 ... suction tube ( Pipeline)
9 ... Drainage tank 41 ... Water storage tank 42 ... Constant temperature device 43 ... Pure water treatment filter 44 ... Degassing treatment filter 45, 47 ... Pump 46 ...
Solenoid valve

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Claims (2)

[Claims] 1. A bolus interposed between an applicator and a body surface of a subject, wherein an opening is formed in a bottom surface of the bolus and a bolus bottom surface is provided on an outer peripheral portion of the opening. A bolus characterized in that it is provided with a water-tight coupling means. 2. A bolus having an opening at the bottom and a connecting means for water-tightly connecting the bottom to the surface of the body to be inspected in the periphery of the opening, and degassed water is supplied into the bolus by connecting to the bolus by a pipe line. A bolus system comprising: deaerated water supply means for discharging and deaeration means for discharging deaerated water in the bolus.