Blood pressure measuring apparatus
First Claim
1. Blood pressure measuring apparatus comprisingan occluding cuff including an inflatable bladder,an air guiding passage one end of which is connected to said bladder,air pressure control means connected to the other end of said passage for inflating or deflating said bladder through said passage,a microphone within said passage for sensing Korotkoff sounds which are propagated through said passage from said bladder and for generating Korotkoff sound signals,pressure transducer means for sensing the applied pressure within said bladder and for generating pressure signals, andcircuit means operative in response to said Korotkoff sound and pressure signals to measure the systolic and diastolic blood pressures of a patient whose blood pressure is to be measured.
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Accused Products
Abstract
Blood pressure measuring apparatus comprising an occluding cuff including an inflatable bladder, an air guiding passage one end of which is connected to the bladder, an air pressure control connected to the other end of the passage for inflating or deflating the bladder through the passage, a microphone within said passage for sensing Korotkoff sounds which are propagated through the passage from the bladder and for generating Korotkoff sound signals, a pressure transducer for sensing the pressure within the bladder and for generating pressure signals, and a circuit operative in response to the Korotkoff sound and pressure signals to measure the systolic and diastolic blood pressures of a patient whose blood pressure is to be measured.
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Citations
11 Claims
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1. Blood pressure measuring apparatus comprising
an occluding cuff including an inflatable bladder, an air guiding passage one end of which is connected to said bladder, air pressure control means connected to the other end of said passage for inflating or deflating said bladder through said passage, a microphone within said passage for sensing Korotkoff sounds which are propagated through said passage from said bladder and for generating Korotkoff sound signals, pressure transducer means for sensing the applied pressure within said bladder and for generating pressure signals, and circuit means operative in response to said Korotkoff sound and pressure signals to measure the systolic and diastolic blood pressures of a patient whose blood pressure is to be measured.
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11. Blood pressure measuring apparatus comprising
an occluding cuff including an inflatable bladder, an air guiding passage one end of which is connected to said bladder, air pressure control means connected to the other end of said passage for inflating or deflating said bladder through said passage, a microphone within said passage for sensing Korotkoff sounds which are propagated through said passage from said bladder and for generating Korotkoff sound signals, pressure transducer means for sensing the applied pressure within said bladder and for generating pressure signals and circuit means operative in response to said Korotkoff sound and pressure signals to measure the systolic and diastolic blood pressures of a patient whose blood pressure is to be measured, a case housing said microphone and having a space which serves as a portion of said passage, said circuit means additionally including a printed circuit board on which said case is mounted, said case additionally consisting of an upper cover made of metal and a lower cover made of insulation material; -
said printed circuit board additionally including a conductive pattern corresponding to said lower cover, and said upper cover and conductive pattern are grounded.
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Specification