Pacemaker and heart monitoring and data transmitting device and method

• US 5,586,556 A
• Filed: 05/11/1995
• Issued: 12/24/1996
• Est. Priority Date: 05/11/1995
• Status: Expired due to Fees

• Current Assignee: TZ Medical, Inc.
• Original Assignee: TZ Medical, Inc.
• Inventors: Zahler, Byron G., Spivey, Thomas R.
• Primary Examiner(s): Kamm, William E.
• Assistant Examiner(s): GETZOW, SCOTT M
• Application Number:
  US08/438,688
• Time in Patent Office: 593 Days
• Field of Search: 128/697, 128/904
• US Class Current: 600/510
• CPC Class Codes: A61B 2560/0431 Portable apparatus, e.g. comprising a handle or case
• CPC Class Codes: A61B 5/0006 ECG or EEG signals
• CPC Class Codes: A61N 1/3702 Physiological parameters A61N1/365 takes precedence; evoked response A61N1/371

Abstract

A pacemaker and heart monitoring and transmitting device connects by telephone to a remote receiving station by both cradle coupling to a patient telephone handset and hands-free communication modes. The device collects an analog patient signal, including electrical EKG activity and pacemaker stimulation pulse width information, and applies such analog signal to a microcontroller executing conversion to digital form and application of digital signal processing (DSP) to produce a digitally generated tone representing patient EKG and stimulation pulse width information for delivery by telephone connection to a remote receiving station. The device further reacts to DTMF tones originating from the remote station to alter operation including increase or decrease in speaker volume, activation of a patient alert signal, initiation of hands-free mode, and a variety of other command features.

Claims

1. A pacemaker monitor transmitter device for coupling to a patient having a pacemaker and interacting with a remote station including a remote operator, the device comprising:

a telephonic communication channel delivering a pacemaker monitor transmitter device generated signal and a patient voice signal into a telephone connection and receiving from said telephone connection a remote signal including a command signal and a remote operator voice signal;

an electrode pair attachable to said patient and providing a patient signal; and

a patient signal processing element receiving said patient signal in analog form, converting said patient signal to digital form, and providing said patient signal to said telephonic channel in frequency modulated form as said device generated signal.

2. A device according to claim 1 wherein said telephonic communication channel includes at least one of a cradle receiving a patient telephone handset and acoustic coupling to said patient telephone handset, a hands-free microphone monitoring said patient voice and producing said patient voice signal, a hands-free speaker providing to said patient acoustic representation of said remote operator voice signal, and conductors coupled directly to a telephone line jack.

3. A device according to claim 1 wherein said frequency modulated form is a function of a finite impulse response algorithm.

4. A device according to claim 1 wherein said processing element in converting said patient signal to digital form includes at least one digital signal processing function applied thereto.

5. A device according to claim 4 wherein said at least one digital signal processing function includes a finite impulse response function.

6. A device according to claim 1 wherein said command signal includes at least one of speaker volume increase, speaker volume decrease, toggle a pulse width component of said patient signal, patient alert, and toggle hands-free mode.

7. A device according to claim 1 wherein said patient signal as provided to said telephonic communication signal is a digitally generated tone.

8. A device according to claim 1 wherein said device further includes a command interface receiving from said remote operator a command signal and reacts to said command signal.

9. A pacemaker monitor transmitter device comprising:

a microcontroller;

a telephonic communication channel coupled to said microcontroller whereby said device applies signals, including patient voice signals, to a telephone connection and receives signals, including remote operator signals, from said telephone connection;

a patient signal interface including an electrode pair producing an analog patient signal and delivering said patient signal to said microcontroller whereby said microcontroller converts said patient signal to digital form, applies digital signal processing to said patient signal, and delivers said patient signal to said telephonic communication channel as digitally generated tones; and

a command signal interface coupling said microcontroller and said telephonic communication channel whereby said microcontroller responds to signals received from said telephonic communication signal and reacts thereto.

10. A device according to claim 9 wherein said patient signal as delivered to said telephonic communication channel includes at least one of EKG signal representation and pacemaker stimulation pulse width representation.

11. A device according to claim 9 wherein said digital signal processing includes a finite impulse response function.

12. A method of monitoring patient heart and pacemaker condition comprising the steps:

coupling at a patient location said patient to electrodes and producing an analog patient signal;

receiving at said patient location said analog patient signal at a microcontroller and converting said analog patient signal into a digital patient signal;

providing at said patient location digitally generated tones representing said digital patient signal to a telephone connection;

monitoring at a remote station connected to said telephone connection said digitally generated tones;

providing at said remote station command signals introduced into said telephone connection; and

monitoring at said patient location said command signals and reacting thereto, said monitoring and reacting step including a selected one of said command signals causing cessation of said digital patient signal and allowing bi-directional voice communication on said telephone connection between said patient and an operator at said remote station.

13. A pacemaker monitor transmitter device for coupling to a patient having a pacemaker and interacting with a remote station including a remote operator, the device comprising:

a telephonic communication channel delivering a pacemaker monitor transmitter device generated signal and a patient voice signal into a telephone connection and receiving from said telephone connection a remote signal including a command signal and a remote operator voice signal, said telephonic communication channel including a patient hands-free mode of operation with respect to said patient voice signal presentation to said remote operator and said remote operator voice signal presentation to said patient, said command signal including ability to cease delivery of said pacemaker monitor transmitter device generated signal and establish said hands-free mode of operation whereby said patient and said remote operator may interact verbally through said telephonic communication channel;

an electrode pair attachable to said patient and providing a patient signal; and

a patient signal processing element receiving said patient signal and providing said patient signal to said telephonic channel as said device generated signal except when said hands-free mode is established by said command signal.