Oximetric esophageal probe
First Claim
Patent Images
1. 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.
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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.
183 Citations
11 Claims
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1. 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. - View Dependent Claims (2, 3, 4)
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5. 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.
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6. 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. - View Dependent Claims (7)
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8. A method for measuring a fraction of hemoglobin in blood in a form of oxyhemoglobin, the method comprising:
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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.
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9. A method for measuring a fraction of hemoglobin in blood in a form of oxyhemoglobin, the method comprising;
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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. - View Dependent Claims (10, 11)
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Specification