Blood treatment machine having electrical heartbeat analysis

Patent metadata

Field	Value
Publication number	US-2017340801-A1
Application number	US-201615167368-A
Country	US
Kind code	A1
Filing date	May 27, 2016
Priority date	Feb 9, 2007
Publication date	Nov 30, 2017
Grant date	—

Abstract

A blood treatment machine includes a blood pump; an arterial line in fluid communication with the blood pump; a venous line; and a heartbeat evaluation system including (i) a first electrode coupled to the arterial line or to a patient, (ii) a second electrode coupled to the venous line, (iii) electronic circuitry communicating electrically with the first electrode and the second electrode to sense an electrical heartbeat signal generated by the patient, and (iv) signal processing configured to use the sensed heartbeat signal to calculate at least one of (a) heart rate, (b) respiration, (c) stroke volume, (d) cardiac output, or (e) central blood volume.

First claim

The invention is claimed as follows:

1 . A blood treatment machine comprising:
a blood pump; an arterial line in fluid communication with the blood pump; a venous line; and a heartbeat evaluation system including
(i) a first electrode coupled to the arterial line or to a patient,
(ii) a second electrode coupled to the venous line,
(iii) electronic circuitry communicating electrically with the first electrode and the second electrode to sense an electrical heartbeat signal generated by the patient, and
(iv) signal processing configured to use the sensed heartbeat signal to calculate at least one of (a) heart rate, (b) respiration, (c) stroke volume, (d) cardiac output, or (e) central blood volume.

2 . The blood treatment machine of claim 1 , which is further configured to determine a change in the electrical heartbeat signal sufficient to expect that an access disconnection of the venous line has occurred.

3 . The blood treatment machine of claim 2 , wherein the determined change sufficient to expect that an access disconnection of the venous line has occurred is a loss of the heartbeat signal.

4 . The blood treatment machine of claim 2 , wherein the electronic circuitry is split into a first branch in communication with the signal processing for calculating the at least one of (a) to (e) and a second branch for determining that a change in the electrical heartbeat signal sufficient to expect that an access disconnection of the venous line has occurred.

5 . The blood treatment machine of claim 1 , wherein the signal processing includes at least one of a random access memory (“RAM”) or digital signal processing (“DSP”).

6 . The blood treatment machine of claim 1 , wherein the electronic circuitry includes signal conditioning circuitry.

7 . The blood treatment machine of claim 1 , wherein at least one of the first electrode or the second electrode is coupled to the respective arterial line or the venous line, respectively, via a direct contact, a capacitive coupling or an inductive coupling.

8 . The blood treatment machine of claim 1 , wherein the sensed heartbeat signal is translated into an electrocardiogram for further processing.

9 . The blood treatment machine of claim 8 , wherein the electrocardiogram is used to determine a parameter useful when performing a blood treatment.

10 . A blood treatment machine comprising:
a blood pump; an arterial line in fluid communication with the blood pump; a venous line; and a heartbeat evaluation system including
(i) a first electrode coupled to the arterial line or to a patient,
(ii) a second electrode coupled to the venous line, and
(iii) electronic circuitry and signal processing cooperating to communicate electrically with the first electrode and the second electrode, generate an electrocardiogram from the electrical heartbeat signal, and derive at least one of (a) an enlargement of the patient's heart (b) an insufficient blood flow to the patient, (c) an injury to the patient's heart, (d) problems with the patient's heart rhythm, (e) changes in electrical activities of the patient's heart, or (f) inflammation of the sac surrounding the patient's heart.

11 . The blood treatment machine of claim 10 , wherein the at least one of (a) to (f) is used to determine a parameter useful when performing a blood treatment.

12 . The blood treatment machine of claim 10 , which is further configured to determine a change in the electrical heartbeat signal sufficient to expect that an access disconnection of the venous line has occurred.

13 . The blood treatment machine of claim 12 , wherein the electronic circuitry is split into a first branch in communication with the signal processing for deriving the at least one of (a) to (f) and a second branch for determining that a change in the electrical heartbeat signal sufficient to expect that an access disconnection of the venous line has occurred.

14 . The blood treatment machine of claim 10 , wherein the signal processing includes at least one of a random access memory (“RAM”) or digital signal processing (“DSP”).

15 . The blood treatment machine of claim 10 , wherein the electronic circuitry includes signal conditioning circuitry.

16 . A blood treatment machine comprising:
a blood pump; a cardiac catheter assembly in fluid communication with the blood pump and structured for insertion into a patient's (i) vein, (ii) artery, (iii) graft, or (iv) heart, the cardiac catheter assembly including a first electrode, and a second electrode; electronic circuitry communicating electrically with the first electrode and the second electrode to sense an electrical heartbeat signal generated by the patient; and signal processing configured to use the sensed heartbeat signal to calculate at least one of (a) heart rate, (b) respiration, (c) stroke volume, (d) cardiac output, or (e) central blood volume.

17 . The blood treatment machine of claim 16 , wherein the cardiac catheter assembly includes an arterial access section operable with the blood pump.

18 . A blood treatment machine comprising:
a blood pump; a cardiac catheter assembly in fluid communication with the blood pump and structured for insertion into a patient's (i) vein, (ii) artery, (iii) graft, or (iv) heart, the cardiac catheter assembly including a first electrode, and a second electrode; and electronic circuitry and signal processing cooperating to communicate electrically with the first electrode and the second electrode, generate an electrocardiogram from the electrical heartbeat signal, and derive at least one of (a) an enlargement of the patient's heart (b) an insufficient blood flow to the patient, (c) an injury to the patient's heart, (d) problems with the patient's heart rhythm, (e) changes in electrical activities of the patient's heart, or (f) inflammation of the sac surrounding the patient's heart.

19 . The blood treatment machine of claim 18 , wherein the cardiac catheter assembly includes an arterial access section operable with the blood pump.

20 . A blood treatment machine comprising:
a blood pump; an arterial line in fluid communication with the blood pump; a venous line; a first electrode coupled to (i) the arterial line, (ii) a patient, or (iii) a cardiac catheter assembly; a second electrode coupled to (i) the venous line, or (ii) the cardiac catheter assembly; and
electronic circuitry communicating electrically with the first electrode and the second electrode to sense an electrical heartbeat signal generated by the patient, and
signal processing configured to use the sensed heartbeat signal to calculate at least one of (a) heart rate, (b) respiration, (c) stroke volume, (d) cardiac output, or (e) central blood volume
or
electronic circuitry and signal processing cooperating to communicate electrically with the first electrode and the second electrode, generate an electrocardiogram from the electrical heartbeat signal, and derive at least one of (a) an enlargement of the patient's heart (b) an insufficient blood flow to the patient, (c) an injury to the patient's heart, (d) problems with the patient's heart rhythm, (e) changes in electrical activities of the patient's heart, or (f) inflammation of the sac surrounding the patient's heart.

21 . The blood treatment machine of claim 20 , wherein the arterial and venous lines are sections of the cardiac catheter assembly.

Assignees

• Baxter Int
• Baxter Healthcare Sa

Inventors

• Roger Rodolfo
• Childers Robert
• Kelly Thomas D

Classifications

• A61M2205/3584

  using modem, internet or Bluetooth® · CPC title

• A61M2230/005

  Parameter used as control input for the apparatus · CPC title

• A61M2205/18

  with alarm · CPC title

• A61N1/00

  Electrotherapy; Circuits therefor (A61N2/00 takes precedence; irradiation apparatus A61N5/00) · CPC title

• A61M2230/04

  Heartbeat characteristics, e.g. ECG, blood pressure modulation · CPC title