Handheld Oximeter with Display of Real-Time, Average Measurements and Average Resetting
An oximetry device sealed in a sheath directs a user to allow the oximetry device to make oximetry readings at a number of different tissue locations of a patient and average two or more of the oximetry readings by directing the lifts and placements of the oximetry device and sheath to and from the different tissue locations and detecting the lift and placements. The averages are generated and displayed on a display of the device for the oximetry readings if the lifts are made while use directions for the lifts are displayed on a display of the oximetry device. The averages are not generated if the lifts are not made while the user directions for the lifts are not displayed. The averages are simultaneously displayed with the oximetry readings which are instantaneous measurement for patient tissue.
1 . A medical device comprising:
a housing, comprising a first end and a second end, wherein the first end and the second end of the housing are opposite ends of the housing;
a printed circuit board (PCB), housed in the housing and extending in a direction that is from the first end to the second end of the housing;
a processor, housed in the housing, wherein the processor is located on the PCB;
a memory, housed in the housing, wherein the memory is located on the PCB and is coupled to the processor;
a display, housed in the housing, wherein the display is coupled to the processor, is visible from an exterior of the housing and is located at the first end of the housing;
a sensor head, housed in the housing, wherein the sensor head is located at the second end of the housing; and
a first accelerometer, housed in the housing, wherein the first accelerometer is located on the PCB and is coupled to the processor,
the first accelerometer comprises a first axis for a first detection of a first acceleration direction with respect to a direction for the acceleration of gravity, and the first axis is perpendicular to a surface of the PCB that the first accelerometer is located on, such that the first accelerometer can detect rotation of the first and second ends of the housing with respect to the direction of the acceleration of gravity vector when the first axis is at non-zero angle with respect to the direction.
2 . The device of claim 1 wherein the first accelerometer comprises a second axis for a second detection of a second acceleration direction with respect to a direction for the acceleration of gravity, and the second axis extends through the first end and the second end of the housing.
3 . The device of claim 2 wherein the second axis extends through the first end and the second end of the housing, such that the first accelerometer can detect rotation of the first and second ends of the housing with respect to the direction of the acceleration of gravity vector when the second axis is at non-zero angle with respect to the direction.
4 . The device of claim 2 wherein the second axis is parallel to a surface of the PCB that the first accelerometer is located on.
5 . The device of claim 2 wherein a direction of the first axis is indicated on the PCB.
6 . The device of claim 5 wherein a direction of the second axis is indicated on the PCB.
7 . The device of claim 2 wherein the first accelerometer comprises a third axis for a third detection of a third acceleration direction, and the third axis extends parallel to a surface of the PCB that the first accelerometer is located on.
8 . The device of claim 7 wherein a direction of the third axis is indicated on the PCB.
9 . The device of claim 1 wherein the first accelerometers is not located at a center of the PCB.
10 . The device of claim 1 wherein the first accelerometer is located closer to a side of the housing than to a center of the housing.
11 . The device of claim 10 wherein the first accelerometer is located closer to the display than to the sensor head.
12 . The device of claim 1 comprising a second accelerometer, housed in the housing, wherein the second accelerometer is located on the PCB and is coupled to the processor, the second accelerometer comprises a second axis for a second detection of a second acceleration direction with respect to a direction for the acceleration of gravity, and the second axis is parallel to a surface of the PCB that the second accelerometer is located on, such that the second accelerometer can detect rotation of the first and second ends of the housing with respect to the direction of the acceleration of gravity vector when the second axis is at non-zero angle with respect to the direction.
13 . A medical device comprising:
a housing, comprising a first end and a second end, wherein the first end and the second end of the housing are opposite ends of the housing;
a printed circuit board (PCB), housed in the housing and extending in a direction that is from the first end to the second end of the housing;
a processor, housed in the housing, wherein the processor is located on the PCB;
a memory, housed in the housing, wherein the memory is located on the PCB and is coupled to the processor;
a display, housed in the housing, wherein the display is coupled to the processor, is visible from an exterior of the housing and is located at the first end of the housing;
a sensor head, housed in the housing, wherein the sensor head is located at the second end of the housing; and
an accelerometer, housed in the housing closer to a side of the housing than to a center of the housing and located closer to the display than to the sensor head, wherein the accelerometer is located on the PCB and is coupled to the processor,
the accelerometer comprises a first axis for a first detection of a first acceleration direction with respect to a direction for the acceleration of gravity,
the first axis is perpendicular to a surface of the PCB that the accelerometer is located on, such that the accelerometer can detect rotation of the first and second ends of the housing with respect to the direction of the acceleration of gravity vector when the first axis is at non-zero angle with respect to the direction,
a direction of the first axis is indicated on the PCB,
the accelerometer comprises a second axis for a second detection of a second acceleration direction with respect to a direction for the acceleration of gravity, and the second axis extends parallel to an axis that extends through the first end and the second end of the housing, and
a direction of the second axis is indicated on the PCB.
14 . The device of claim 13 wherein the second axis is parallel to a surface of the PCB that the accelerometer is located on.
15 . The device of claim 13 wherein the accelerometer comprises a third axis for a third detection of a third acceleration direction, and the third axis extends parallel to a surface of the PCB that the accelerometer is located on.
16 . The device of claim 15 wherein a direction of the third axis is indicated on the PCB.
17 . The device of claim 13 wherein the accelerometers is not located at a center of the PCB.
18 . The device of claim 13 wherein the first accelerometer is located closer to a side of the housing than to a center of the housing.
19 . The device of claim 18 wherein the first accelerometer is located closer to the display than to the sensor head.