Optical sensor for medical device
First Claim
Patent Images
1. A medical device comprising:
- a housing; and
an optical sensor connected to the housing and comprising;
an emit module; and
a receive module offset laterally from the emit module,wherein each of the emit and receive modules comprises a cavity within which an opto-electronic component is arranged and a lens generally defining one end of the cavity offset from the opto-electronic component,wherein a size of the lens of the emit module is less than a size of the receive module, andwherein at least one of the emit module or the receive module comprises;
a wall surrounding the opto-electronic component;
a circuit board offset from the lens and to which the opto-electronic component and the wall are connected to define another end of the cavity; and
a ferrule connected to the housing, the wall, and the lens.
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Abstract
An optical sensor for a medical device includes a fixed lens spacing between emit and receive modules to achieve target sensor sensitivity, while varying other sensor parameters in order to increase signal amplitude without increasing power demand. The size of at least one of emit and receive module lenses of an optical sensor, and the offset between the opto-electronic component and the respective lens of at least one of emit and receive modules is decreased to increase amplitude of the signal received by the receive module from the emit module.
39 Citations
30 Claims
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1. A medical device comprising:
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a housing; and an optical sensor connected to the housing and comprising; an emit module; and a receive module offset laterally from the emit module, wherein each of the emit and receive modules comprises a cavity within which an opto-electronic component is arranged and a lens generally defining one end of the cavity offset from the opto-electronic component, wherein a size of the lens of the emit module is less than a size of the receive module, and wherein at least one of the emit module or the receive module comprises; a wall surrounding the opto-electronic component; a circuit board offset from the lens and to which the opto-electronic component and the wall are connected to define another end of the cavity; and a ferrule connected to the housing, the wall, and the lens. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An optical sensor connected to a housing of a medical device, the sensor comprising:
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an emit module; and a receive module offset laterally from the emit module, wherein each of the emit and receive modules comprises a cavity within which an opto-electronic component is arranged and a lens generally defining one end of the cavity offset from the opto-electronic component, wherein a size of the lens of the emit module is less than a size of the lens of the receive module, and wherein at least one of the emit module or the receive module comprises; a wall surrounding the opto-electronic component; a circuit board offset from the lens and to which the opto-electronic component and the wall are connected to define another end of the cavity; and a ferrule connected to the housing, the wall, and the lens. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method of constructing an optical sensor connected to a housing of a medical device, the method comprising:
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providing an emit module and a receive module offset laterally from the emit module, wherein each of the emit and receive modules comprises a cavity within which an opto-electronic component is arranged and a lens generally defining one end of the cavity offset from the opto-electronic component, and at least one of the emit module or the receive module comprises a wall surrounding the opto-electronic component, a circuit board offset from the lens and to which the opto-electronic component and the wall are connected to define another end of the cavity, and a ferrule connected to the housing, the wall, and the lens; and selecting a size of the lens of the emit module to be less than a size of the lens of the receive module.
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Specification