Back to results
US 5,329,922 AGranted
Oximetric esophageal probe
OwnerJohn L. Atlee, IIIinventor
Life of this patent
Estimating the term…
Abstract
An esophageal probe comprising an elongated tubular body member with a distal portion that is insertible into an esophagus and a pair of oximeter sensors mounted in a spaced apart relation on the body for generating electrical signals functionally related to the fraction of hemoglobin in blood in the form of oxyhemoglobin.
Claims11
An esophageal probe comprising:
- an elongated tubular hollow body member having a distal portion that is insertible into an esophagus of a patient and including a probe having a contact portion, having a length for contact with the esophagus, said contact portion having a distal end for communicating with a gastro-esophageal junction of the patient and a proximal end for communicating with a hypo-pharynx of the patient, one third of the length of said contact portion from said distal end defining a distal third and a remaining two thirds defining a proximal two thirds, and an oximeter sensor located in the proximal two thirds of said contact portion, said oximeter sensor being constructed and arranged to measure a level of oxygen saturation in a patient's blood in tissue located in that portion of the esophagus adjacent the proximal two thirds of said contact portion.
An esophageal probe comprising:
- an elongated tubular hollow body member having a distal portion constructed and arranged to be inserted into an esophagus of a patient and including a probe having a contact portion, having a length, for contact with the esophagus, said contact portion having a distal end for communicating with a gastro-esophageal junction of the patient and a proximal end for communicating with a hypo-pharynx of the patient, one quarter of the length of said contact portion from said distal end defining a distal quarter and a remaining three quarters defining a proximal three quarters, and an oximeter sensor located in the proximal three quarters of said contact portion, said oximeter sensor being constructed and arranged to measure a level of oxygen saturation in a patient's blood.
An esophageal probe comprising:
- an elongated tubular hollow body member having a distal portion that is insertable into an esophagus of a patient and including a probe having an elongated contact portion, having a length for contact with the patient's esophagus, said contact portion having a distal end for communicating with a gastro-esophageal junction of the patient and a proximal end for communicating with a hypo-pharynx of the patient, and a pair of oximeter sensors mounted in a spaced apart relation on said elongated contact portion.
A method for measuring a fraction of hemoglobin in blood in a form of oxyhemoglobin, the method comprising:
- inserting an esophageal probe mounted oximeter sensor into an esophagus of a patient;
- positioning the oximeter sensor in that portion of the patient's esophagus located in an upper three-fourths thereof as measured proximally from the patient's gastro-esophageal junction;
- generating signals functionally related to an oxyhemoglobin concentration in the blood within esophageal tissue of the patient's said upper three fourths portion;
- determining the oxyhemoglobin concentration of said blood from said signals.
1 more element
A method for measuring a fraction of hemoglobin in blood in a form of oxyhemoglobin, the method comprising;
- inserting an esophageal probe mounted oximeter sensor into an esophagus of a patient;
- positioning the oximeter sensor in that portion of the patient's esophagus located in an upper two thirds thereof as measured proximally from the patient's gastro-esophageal junction;
- generating signals functionally related to an oxyhemoglobin concentration in the blood within esophageal tissue of the patient at a location within said upper two thirds portion;
- determining the oxyhemoglobin concentration of said blood from said signals.
1 more element
Dependencies are inferred from the claim text.