Injection training tool emitting omnidirectional light
First Claim
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1. A testing tool comprising:
- a needle having a central lumen, a distal end, a proximal end, and a tip at the distal end of the needle, the tip comprising a fluorescent material;
a barrel cooperating with the proximal end of the needle;
a light source, positioned in the barrel, the light source configured to emit a first light having a first wavelength; and
an optical fiber located inside the central lumen of the needle, the optical fiber configured to receive the emitted first light from the light source and to transmit the emitted first light through the needle from the proximal end to the distal end so that the first light is emitted to the tip;
wherein the fluorescent material of the tip, upon receiving the first light, absorbs at least a portion of the first light and in response to absorbing the at least a portion of the first light emits a second light having a second wavelength from the tip.
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Abstract
Systems, methods, and apparatuses for providing substantially omnidirectional light emission from a tip of a needle for use with injection training systems are provided. The substantially omnidirectional light emission improves the angular range of detection of the emitted light. The approach uses principles of fluorescence and/or light diffusion to emit light in a substantially omnidirectional pattern from the needle tip in order to improve the detectability of the emitted light by a light detector.
220 Citations
20 Claims
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1. A testing tool comprising:
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a needle having a central lumen, a distal end, a proximal end, and a tip at the distal end of the needle, the tip comprising a fluorescent material; a barrel cooperating with the proximal end of the needle; a light source, positioned in the barrel, the light source configured to emit a first light having a first wavelength; and an optical fiber located inside the central lumen of the needle, the optical fiber configured to receive the emitted first light from the light source and to transmit the emitted first light through the needle from the proximal end to the distal end so that the first light is emitted to the tip; wherein the fluorescent material of the tip, upon receiving the first light, absorbs at least a portion of the first light and in response to absorbing the at least a portion of the first light emits a second light having a second wavelength from the tip. - View Dependent Claims (2, 3, 4, 5, 6, 7, 14, 15, 16, 17, 18, 19, 20)
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8. A testing tool comprising:
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a needle having a central lumen, a distal end, a proximal end, and a tip at the distal end of the needle, the tip comprising a light-diffusing material configured to radiate light in a substantially omnidirectional pattern; a barrel cooperating with the proximal end of the needle; a light source, positioned in the barrel, the light source configured to emit light; and an optical fiber located inside the central lumen of the needle, the optical fiber configured to receive the emitted light from the light source and to transmit the emitted light through the needle from the proximal end to the distal end so that the light is emitted to the light-diffusing material of the tip. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification