PHYSIOLOGICAL BLOOD PRESSURE WAVEFORM COMPRESSION IN AN ACOUSTIC CHANNEL
First Claim
1. A method of processing blood pressure measurements transmitted from an implantable medical device including a blood pressure sensor to a receiving device, the method comprising:
- transmitting a command to the implantable medical device, the command prompting the implantable medical device to sense blood pressure measurements;
receiving a response from the implantable medical device, the response indicating that the device initiated the sensing of blood pressure measurements;
receiving one or more data packets from the implantable medical device, the one or more data packets including;
a base pressure measurement representative of a starting point of a blood pressure waveform, anda measurement representative of a difference between another blood pressure measurement and the base pressure measurement; and
generating a pressure waveform from the one or more packets.
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Abstract
Methods, systems and devices for processing blood pressure measurements are disclosed. An illustrative method includes transmitting a command to an implantable medical device including a blood pressure sensor. The method includes receiving a response from the implantable medical device, the response indicating that the device initiated the sensing of blood pressure measurements. The method includes receiving one or more data packets from the implantable medical device. The one or more data packets can include a base pressure measurement that is representative of a starting point of a blood pressure waveform. The one or more data packets further include a delta value measurement representative of a difference between another blood pressure measurement and the base pressure measurement, or a difference between a current measurement and one or more previous measurements. Additionally, the method includes generating a pressure waveform from the one or more data packets.
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Citations
20 Claims
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1. A method of processing blood pressure measurements transmitted from an implantable medical device including a blood pressure sensor to a receiving device, the method comprising:
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transmitting a command to the implantable medical device, the command prompting the implantable medical device to sense blood pressure measurements; receiving a response from the implantable medical device, the response indicating that the device initiated the sensing of blood pressure measurements; receiving one or more data packets from the implantable medical device, the one or more data packets including; a base pressure measurement representative of a starting point of a blood pressure waveform, and a measurement representative of a difference between another blood pressure measurement and the base pressure measurement; and generating a pressure waveform from the one or more packets. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An implantable medical device configured to sample a blood pressure waveform, the device comprising:
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a response module configured to receive a command from a communicating device, the command including parameters for sampling a blood pressure waveform, the parameters specifying at least a sampling rate and a resolution; the response module configured to transmit a response packet to the communicating device in response to the command; a pressure measurement module configured to sense the blood pressure waveform; an ADC module configured to obtain a blood pressure sample by sampling the blood pressure waveform at the sampling rate; a resolution conversion module configured to convert the blood pressure sample to the resolution; a delta module configured to determine a difference measurement between the converted blood pressure sample and a previous blood pressure sample; an encoding module configured to encode the determined difference measurement using an encoding range including a range of discrete values; a packet module configured to generate a data packet including the difference measurement; and the packet module configured to transmit the data packet to the communicating device. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A system for sampling a blood pressure waveform, the system comprising:
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an external device communicable with an implantable medical device, the external device including; a command module configured to transmit a command to the implantable medical device, the command including parameters for sampling a blood pressure waveform; and the implantable medical device including; a response module configured to transmit a response packet to a second device in response to the command; a pressure measurement module configured to obtain a blood pressure measurement by sampling the blood pressure waveform at a sampling rate; a resolution conversion module configured to convert the blood pressure measurement to a resolution; a delta module configured to determine a difference measurement between the converted sampled blood pressure waveform and a previous sample; an encoding module configured to encode the determined difference measurement using an encoding range including a range of discrete values; and a packet module configured to prepare the determined difference measurement as a data packet; wherein the packet module is configured to transmit the data packet to the external device. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification