Bone oxygenation measurement
First Claim
1. A method of making an oxygen saturation measurement for a bone comprising:
- advancing an elongated probe through an incision in a tissue, wherein the probe comprises;
a first tube;
a sensor head, coupled to the first tube; and
first and second fiber optic cables, coupled to the sensor head, wherein ends of the first and second fiber optic cables are exposed on a surface of the sensor head, and an axis passing through the first tube passes through the surface;
positioning the elongated probe in the tissue so the sensor head contacts a bone for which an oxygen saturation parameter is to be measured;
causing transmitting of a first light signal through the first fiber optic cable to the sensor head, wherein from the sensor head, the first light signal is directed at the bone;
after causing transmitting of the first light signal through the first fiber optic cable, maintaining a position of the probe at the bone for the probe to receive a reflection of the first light signal from the bone, wherein the reflection of the first light signal from the bone is a second light signal; and
causing transmitting of the second light signal via the second fiber optic cable, wherein the second light signal is transmitted in a direction opposite of the transmitting of the first light signal.
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Accused Products
Abstract
A bone oximeter probe includes an elongated member and a sensor head at an end of the elongated member to make measurements for a bone. The measurements can indicate the viability or nonviability of the bone. In an implementation, the probe is advanced through an incision in soft tissue, towards the underlying bone, and positioned so that the sensor head faces the bone to be measured. Optical signals are sent from the sensor head and into the bone. The bone reflects some of the optical signals which are then detected so that measurements for the bone can be made. Some of these measurements include an oxygen saturation level value, and a total hemoglobin concentration value of the bone.
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Citations
24 Claims
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1. A method of making an oxygen saturation measurement for a bone comprising:
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advancing an elongated probe through an incision in a tissue, wherein the probe comprises; a first tube; a sensor head, coupled to the first tube; and first and second fiber optic cables, coupled to the sensor head, wherein ends of the first and second fiber optic cables are exposed on a surface of the sensor head, and an axis passing through the first tube passes through the surface; positioning the elongated probe in the tissue so the sensor head contacts a bone for which an oxygen saturation parameter is to be measured; causing transmitting of a first light signal through the first fiber optic cable to the sensor head, wherein from the sensor head, the first light signal is directed at the bone; after causing transmitting of the first light signal through the first fiber optic cable, maintaining a position of the probe at the bone for the probe to receive a reflection of the first light signal from the bone, wherein the reflection of the first light signal from the bone is a second light signal; and causing transmitting of the second light signal via the second fiber optic cable, wherein the second light signal is transmitted in a direction opposite of the transmitting of the first light signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification