JUGULAR VENOUS PRESSURE RULER
First Claim
1. A method for measuring a jugular venous pressure in a patient, the method comprising:
- orienting a JVP Ruler, having first and second arms elongate and situated to be in perpendicular relation one to the other, meeting and terminating at a pivot at pivot ends respectively, such that the second arm is collinear with a vertical line originating at a right atrium of the patient and such that the first arm is horizontal and having a transducer end situated opposite the pivot end of the first arm, the transducer end being generally above a pulse point, the pulse point being a point on the skin of the patient where variations of the jugular venous pressure within the internal jugular vein are exhibited as at least vertical displacement of the skin;
translating the JVP ruler along the vertical line such that a rest end opposite the pivot end of the second arm is resting on the sternal angle of the patient approximately 5 centimeters above the right atrium;
aiming a transducer, located generally at the transducer end, at the pulse point such that when the transducer is activated, it can detect the vertical displacement;
activating the transducer for a period sufficient to record signals indicative of at least the vertical displacement, over at least one period of a jugular venous pulse in a memory.
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Accused Products
Abstract
A JVP ruler and a method for its use in measuring a jugular venous pressure in a patient, includes orienting the JVP ruler such that the second arm is collinear with a vertical line originating at a right atrium of the patient and such a the first arm is horizontal and having a transducer end situated opposite the pivot end of the first arm. The JVP Ruler has first and second arms elongate and situated to be in perpendicular relation one to the other. The arms meet and terminate at a pivot located at the pivot ends of the arms respectively, the transducer end being generally above a pulse point, the pulse point being a point on the skin of the patient where variations of the jugular venous pressure within the internal jugular vein are exhibited as at least vertical displacement of the skin.
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Citations
20 Claims
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1. A method for measuring a jugular venous pressure in a patient, the method comprising:
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orienting a JVP Ruler, having first and second arms elongate and situated to be in perpendicular relation one to the other, meeting and terminating at a pivot at pivot ends respectively, such that the second arm is collinear with a vertical line originating at a right atrium of the patient and such that the first arm is horizontal and having a transducer end situated opposite the pivot end of the first arm, the transducer end being generally above a pulse point, the pulse point being a point on the skin of the patient where variations of the jugular venous pressure within the internal jugular vein are exhibited as at least vertical displacement of the skin; translating the JVP ruler along the vertical line such that a rest end opposite the pivot end of the second arm is resting on the sternal angle of the patient approximately 5 centimeters above the right atrium; aiming a transducer, located generally at the transducer end, at the pulse point such that when the transducer is activated, it can detect the vertical displacement; activating the transducer for a period sufficient to record signals indicative of at least the vertical displacement, over at least one period of a jugular venous pulse in a memory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A jugular venous pulse (JVP) ruler for measuring variation in jugular venous pressure in the internal jugular vein of a patient, the JVP ruler comprising:
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a pivot; an elongate first arm having a first arm pivot end that terminates at a pivot and in opposed relationship to the first arm pivot end, a transducer end; an elongate second arm having a second arm pivot end and rotatably joined to the first arm such that the second arm can rotate about the pivot from a position generally parallel to the first arm to a position generally perpendicular to the first arm, the first arm terminating in a rest end in opposed relation to the second arm pivot end; and a transducer assembly, located generally at the transducer end and when the transducer assembly is situated generally above a pulse point, the pulse point being a point on the skin of the patient where variations of the jugular venous pressure within the internal jugular vein are exhibited as at least vertical displacement of the skin, at the pulse point such that when the transducer activated is activated, the transducer assembly can detect the vertical displacement. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification