US 5,544,649 · Granted 1996-08-13

The 1996 Telemedicine Patent That Invented Remote Patient Care

Imagine a doctor who can see you, talk to you, and check your vital signs all without leaving their office—that's what this patent describes. It uses cameras, microphones, and medical sensors in your home connected to a nurse or doctor at a hospital or clinic through cable television lines, so they can monitor your health 24/7 from far away.

Curated and verified by the IsItPatented Editorial team

The plain-English version

What it protects

The claim covers a system where medical equipment placed in a patient's home measures vital signs or health data, transmits that data over a communications network (like cable TV) to a central monitoring station, and simultaneously enables live two-way video and audio between the patient and a health care worker. What's protected here is the combination of remote monitoring equipment, the transmission method, and the interactive visual communication component working together as one integrated system.

Why it matters

This patent is foundational to telemedicine—the idea of delivering medical care remotely. Filed in 1995 and granted in 1996, it arrived early enough to shape how remote patient monitoring systems were designed and licensed for decades after. During the COVID-19 pandemic, telemedicine exploded, and systems doing exactly what this patent describes became critical infrastructure. While specific commercial impact isn't disclosed here, the patent represents an early legal claim to the core architecture of modern telehealth.

Real-world use

When a home health agency uses a tablet to video-call an elderly patient while monitoring their blood pressure sensor in real time, they're using the exact workflow this patent locked down.

Original USPTO abstract

An ambulatory (in the home) patient health monitoring system is disclosed wherein the patient is monitored by a health care worker at a central station, while the patient is at a remote location. The patient may be a person having a specific medical condition monitored or may be an elderly person desiring general medical surveillance in the home environment. Cameras are provided at the patient's remote location and at the central station such that the patient and the health care worker are in interactive visual and audio communication. A communications network such as an interactive cable television is used for this purpose. Various medical condition sensing and monitoring equipment are placed in the patient's home, depending on the particular medical needs of the patient. The patient's medical condition is measured or sensed in the home and the resulting data is transmitted to the central station for analysis and display. The health care worker then is placed into interactive visual communication with the patient concerning the patient's general well being, as well as the patient's medical condition. Thus, the health care worker can make "home visits" electronically, twenty-four hours a day.

Patent details

Publication number: US 5,544,649
Filing date: 1995-03-15
Grant date: 1996-08-13
Assignee: Cardiomedix, Inc.
Inventor(s): DAVID; DANIEL, DAVID; ZIPORA
CPC class: A61B5/6887

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