JP2005046565A - Laryngoscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a laryngoscope facilitating intubation in the respiratory tract by illuminating the inside of the buccal cavity with almost natural white light and preventing the fall of a light source into the buccal cavity by fixing the light source semipermanently through the elimination of burn-out of an electric bulb and further attaining a long service life of a battery. <P>SOLUTION: This laryngoscope uses a white light emission diode as the light source, and a DC power supply such as the battery as a power supply. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a laryngoscope used to illuminate the periphery of a trachea with a light bulb and to widen the trachea so that a tube such as a catheter can be easily inserted into the trachea.

A laryngoscope is inserted from the oral cavity when a tube such as a catheter is inserted into the trachea, and is used for observing the oral cavity in addition to brightly illuminating the periphery of the trachea with a light bulb while pressing the tongue.

  Conventional light bulbs have a yellowish color, and the color of the oral cavity also looks yellowish, making it difficult to confirm the original color of the oral cavity.

  Conventional light bulbs have a yellowish color and appear darker than natural light, making it difficult to intubate because the airways are difficult to see.

  Intratracheal intubation during cardiac arrest, often used in emergencies such as connecting to a ventilator, etc. Treatment may be delayed.

  In the type in which the bulb is directly attached to the blade because the bulb needs to be replaced, there is always a risk that the bulb will fall into the oral cavity due to the looseness of the screw connecting the blade and the bulb and be swallowed by the patient's body. is there.

  The amount of light from the bulb may be reduced due to battery consumption, and the oral cavity may not be reliably visible.

  In order to achieve the above object, the first invention uses a white light emitting diode to realize the following.

(1) Improve visibility in the oral cavity.
(2) It is possible to avoid delaying treatment for patients due to non-lighting.
(3) A white light emitting diode is semi-permanently fixed to the blade to prevent the bulb from falling into the oral cavity.

  In order to achieve the above target, the second invention uses a white light emitting diode and a direct current power source such as a battery to achieve a long battery life.

  By using a white light emitting diode, the natural color of the oral cavity can be confirmed to obtain a more natural white light emission, and visibility can be improved to perform endotracheal intubation of a tube such as a catheter. make it easier.

  White light-emitting diodes are semiconductor elements and do not have a fermentor like halogen bulbs or tungsten bulbs, so they can be used semi-permanently without the occurrence of non-lighting due to ball breakage. The white light-emitting diode can be fixed semi-permanently to the blade, and the bulb does not fall into the oral cavity due to loosening of screws.

  Since the white light emitting diode is a semiconductor element, it consumes less power when emitting light, and can output a stable amount of light for a long time.

  As shown in FIG. 1, a white light emitting diode 5 is embedded in the blade 1 so as to illuminate the blade tip 1 a, and a semiconductor element 3 and a battery 4 for protecting the white light emitting diode are built in the handle 2.

  In order to distinguish it from a laryngoscope blade using another light source, the shape of the blade connection portion 1b and the handle connection portion 2a is changed to JIS T 7231-1 (the laryngoscope joint part 1 conventional type as shown in FIG. 2). Change to something different from the hook-on handle / blade joint).

  FIG. 3 shows a circuit diagram for lighting a white light emitting diode, and FIG. 1 shows an actual laryngoscope based on this circuit.

  In FIG. 3, the battery 4 is used as a power source, and the semiconductor element 3 for protecting the white light emitting diode is connected in series to the circuit.

  FIG. 1 shows an example of an embodiment of a laryngoscope based on the present invention based on the electric circuit of FIG.

  As shown in FIG. 1, a white light emitting diode 5 is attached to the blade 1 so as to illuminate the blade tip 1a, and the plus side cord 8 is connected to the blade contact portion 6 in the blade hook portion 1b of the blade 1.

  The minus side cord 9 is body ground.

  Further, a blade-side insulator 10 is provided and insulated so that the blade connection portion 6 and the body ground are not short-circuited.

  On the other hand, a semiconductor element 3 that protects the white light emitting diode and a battery 4 that serves as a power source are built in the handle 2.

  The semiconductor element 3 is connected to the handle contact portion 7 in the handle connection portion 2 a via the contact portion spring 12 and is also connected to the battery side contact 13.

  At this time, the body is grounded like the blade, so that the handle side insulator 11 is provided for insulation.

  The battery 4 removes the handle bottom cover 15 and inserts the plus side toward the battery side contact 13, and then closes the handle bottom cover 15.

  The battery 4 is pressed against the battery contact 13 by the force of the battery spring 14.

  By connecting the blade 1 and the handle 2 with the blade connecting portion 1b and the handle connecting portion 2a, the blade contact portion 6 and the handle contact portion 7 come into contact with each other, and the white light emitting diode 5 is turned on.

  As shown in FIG. 2, the shapes of the connecting portions 1b and 2a are changed in order to prevent an erroneous connection with a laryngoscope using another light source.

The internal arrangement figure of the laryngoscope based on this invention. Handle side connection partial view for preventing erroneous connection with other laryngoscope according to the present invention The circuit diagram for lighting the white light emitting diode based on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Blade 1a Blade front-end | tip part 1b Blade connection part 2 Handle 2a Handle connection part 3 Semiconductor element 4 Battery 5 White light emitting diode 6 Blade contact part 7 Handle contact part 8 Plus side cord 9 Negative side cord 10 Blade side insulator 11 Handle side insulation Body 12 Contact part spring 13 Battery side contact 14 Battery spring 15 Handle bottom cover 16 Connection part shape 17 based on JIS T 7231-1 Connection part shape changed for the present invention

Claims (5)

A laryngoscope characterized by using a white light emitting diode. The laryngoscope according to claim 1, wherein the white light emitting diode is fixed to the blade to prevent the light source from falling into the oral cavity due to the loosening of the screw of the light source. 3. A laryngoscope according to claim 2, wherein a white light emitting diode is attached to the blade side and a battery is built in the handle side. 3. A laryngoscope according to claim 2, wherein a white light emitting diode is attached to the blade side, and a semiconductor element for protecting the battery and the white light emitting diode is built in the handle side. The laryngoscope according to claim 2, wherein the shape of the connecting portion is changed in order to prevent erroneous connection with a laryngoscope having another light source.

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