US3807411A - External cardiac pacer with separable generating and power-probe units - Google Patents

External cardiac pacer with separable generating and power-probe units Download PDF

Info

Publication number
US3807411A
US3807411A US17184771A US3807411A US 3807411 A US3807411 A US 3807411A US 17184771 A US17184771 A US 17184771A US 3807411 A US3807411 A US 3807411A
Authority
US
United States
Prior art keywords
probe
battery
terminals
heart
casing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
P Harris
D Gibson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Concept
Original Assignee
Concept
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Concept filed Critical Concept
Priority to US17184771 priority Critical patent/US3807411A/en
Application granted granted Critical
Publication of US3807411A publication Critical patent/US3807411A/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00Electrotherapy; Circuits therefor
    • A61N1/18Applying electric currents by contact electrodes
    • A61N1/32Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/362Heart stimulators
    • A61N1/3625External stimulators

Abstract

A portable, self-powered, battery operated cardiac pacer comprising a removable plug-in battery and probe package and a main stimulator package, in which the stimulator, when electrically connected with the battery and probe package, will permit the cardiac surgeon to insert the negative probe lead needle into the heart muscle and to insert the positive probe lead needle into the subcutaneous tissue of the heart muscle as a ground, whereupon, in response to a predetermined timed pulse ratio selection, an abrupt short duration pulse is delivered to the heart through the positive probe. This pacer unit has a distinct advantage in that it is readily available for use in open heart procedures for instantaneous pacing either while on bypass or immediately coming off cardiopulmonary bypass when the inherent heart rate may be too slow to either sustain an adequate cardiac output of the slow rate may be associated with bradyarrhythmias. The myocardial, or heart muscle, position of the needle electrode results in a lower stimulation threshold.

Description

United States Patent 1191 Harris et a1.

[451 Apr. 30, 1974 [22] Filed:

[ 1 EXTERNAL CARDIAC PACER WITH SEPARABLE GENERATING AND POWER-PROBE UNITS [73] Assignee: Concept, Inc., St. Petersburg, Fla.

Aug. 16, 1971 [21] Appl. No.: 171,847

[52] US. Cl 128/419 P, 128/422 [51] Int. Cl A6ln 1/36 [58] Field of Search 128/4 11213 128/419 P, 419 R, 419 s, 421, 422, 423, 404, 405, 406, 410, 420, 2.1 R, 303.13, 172.1,

[56] References Cited UNITED STATES PATENTS 1,913,595 6/1933 Hyman et a1. 128/419 P 666,431 l/l90l Mead 128/424 3,078,850 2/1963 Schein et al.... 128/419 P 3,667,477 6 1972 Susset et a1. 128/419 E FOREIGN PATENTS OR APPLICATIONS 1,469.132 l/l967 France 128/419 P Primary Examiner-William E. Kamm Attorney, Agent, or Firm-Arthur H. Van Horn ABSTRACT A portable, self-powered, battery operated cardiac pacer comprising a removable plug-in battery and probe package and a main stimulator package, in

I 9 which the stimulator, when electrically connected with the battery and probe package, will permit the cardiac surgeon to insert the negative probe lead needle into the heart muscle and to insert the positive probe lead needle into the subcutaneous tissue of the heart muscle as a ground, whereupon, in response to a predetermined timed pulse ratio selection, an abrupt short duration pulse is delivered to the heart through the positive probe. This pacer unit has a distinct advantage in that it is readily available for use in open heart procedures for instantaneous pacing either while on bypass or immediately coming off cardiopulmonary bypass when the inherent heart rate may be too slow to either sustain an adequate cardiac output of the slow rate may be associated with bradyarrhythmias. The myocardial, or heart muscle, position of the needle electrode results in a lower stimulation threshold.

4 Claims, 3 Drawing Figures EXTERNAL CARDIAC PACER WITH SEPARABLE GENERATING AND POWER-PROBE UNITS NATURE AND OBJECTS OF THE INVENTION sirablefor use not only in cardiac surgery but, with appropriate probes and modifications, may be used effectively for cardiac arrhythmila treatment.

The interconnected units provide an effective and easily available cardiac pacing means which is safe in use and which assures the cardiac surgeon that the heart muscle will contract efficiently immediately after discontinuing the oxygenator during open heart surgery. At this time, the negative lead probe is inserted into the heart muscle and the positive lead probe is inserted into the subcutaneous tissue of the heart muscle as a ground, thus imposing a potential and stimulating pulse of appropriate amplitude and duration to activate the heart muscle.

, THE DRAWING DESCRIPTION The battery and probe package as viewed in FIG. 1 consists of a cylindrical battery casing 1 of dielectric material, closed at one end and in which one or more serially connected battery cells 2 are carried. Positive and negative insulated conductors 3 and 4, respectively, are connected at one end to the positiveand negative terminals of the battery unit and to receptacle contacts Sand 6 carried in the female coupling member 7. mounted in the opposite end of the casing 1.

Insulated probe leads 8 and 9 are electrically connected at one end to probe needles l0 and 11, respectively, through insulated respective finger grips l2, and to receptacle contacts 13 and -14 carried in the male coupling member 15.

The battery power source indicated at 1 and the pulse probe leads 8 and 9'andprobe needles l0 and 11 are preferably packaged together in a sterilized disposable package (not shown) and together with the main stimulator 16 package, constitute a compact combination, readily available for use by the operating surgeon. The main stimulator package 16 is suitable for repeated use.

The main stimulator package consists of resistors R and R and R together with Capacitor C, transistor T and the audio monitor and wave shaping speakerinductor S.

I In use, the battery and probe package 1 is plugged into the stimulator package 16, as illustrated in FIG. 3, with the on-off switch 17 in closed position, the battery imposes a potential on transistor T and simultaneously energizes the transistor emitter through resistors R and R, and capacitor C. As voltage on capacitor C builds up through R and Rv, the emitter of transistor T becomes sufficiently positive to cause transistor T to become conductive, thereby discharging C through T. The time required for this to occur has been determined by the values of R, R and C and is a function of the desired or predetermined pulse repitition rate. In this manner, when T becomes conductive and consequently C dischargesan abrupt, short duration pulse appears across the speaker-inductor S giving an audible signal or indication that the instrument is functioning.

Resistor R is a limiting resistor to prevent damage to transistor T in the event the instrument operator inadvertently short circuits the probes 10 and 11.

In use, during which the negative probe needle 10 is inserted into the heart muscle and the positive probe needle 11 is inserted into the surrounding tissue, the stimulating pulse of appropriate amplitude and duration which is evidenced across the speaker-inductor S, is conducted into resistor R to activate heart activity at the desired constant rate, say beats per minute.

The unit has distinct advantage in that it is readily available for all open heart procedures for instantaneous pacing either while on bypass or immediately coming off cardiopulmonary bypass when the inherent heart rate may be too slow to either sustain an adequate cardiac output or the slow rate may be associated with bradyarrhythmias. The myocardial position of needle electrode results in a lower stimulation threshold. The electrodes are left in place until all coagulation is completed by use of the electrocautery. At this time, pacing wires may then be sewn to the epicardial surface for use in the immediate postoperative period as the needle electrodes are withdrawn. To our knowledge, the only available units at this time are the standard ventricular pacing wires which require suturing to the epicardium. The exposed surface of the wires may provide an electrical hazard because of possible contact with the electrocautery. The wires must be hooked to an intermediary connection before they are attached to the battery source outside of the sterile field; This procedure requires a prolonged period of time as contrasted with the use of the present invention which is of simple construction, safe, inexpensive and has reliable performance.

We claim:

1. A portable, self-powered, battery operated cardiac pacer comprising, in combination, of a pair of complementary interconnecting units comprising a disposable battery and probe package, and a stimulator package electrically and removably interconnectable one with the other, said probe package containing a battery casing, a source of battery enery in said casing, insulated positive and negative probe conductors extending from said casing, plug-in terminals in one end of said casing electrically connected with the respective probe conductors at one end thereof and with said source, a probe needle electrically connected to each of said conductors, respectively, said stimulator package comprising means for electrical interconnection with said terminals, pulse generator means connected to said interconnecting means for generating and delivering a potential through and to said conductors and said probes in the form of a heart stimulating pulse to the heart muscle when said battery and said packages are electrically interconnected, said pulse generator means 3 comprising a unijunction pulse generator, said probes being oppositely charged such that when said probes are applied to the heart, said probes develop an electrical potential therebetween to activate the heart muscle.

2. The invention defined in claim 1 in which is included means to select the repetitive rate of heart stimulating pulse output of said stimulator package.

3. A portable cardiac pacer comprising a casing, a source of battery power within said casing, plug-in terminals in said casing, certain of said terminals having electrical connection with the terminals of said battery power source, a pair of probe conductors having electrical connection with certain of said plug-in terminals, a pair of probe needles each having electrical connection with one of said probe conductors, a stimulation unit pulse generator means housed within said unit for generating and discharging a pulse potential, said pulse generator means comprising a unijunction pulse generator, plug-in terminals in said unit for electrical interconnection with the respective plug-in terminals carried in said battery power casing to deliver battery power to said pulse generating means and to deliver the generated pulse rate to and through said probe needles, when the respective plug-in terminals are electrically interconnected to develop and electrical potential between said probe needles to activate the heart muscle.

4. The invention defined in claim 3 including means in said stimulator unit for selecting the pulse repetitive rate delivered to and through one of said probe needles inserted into the subcutaneous tissue of the heart muscle and the other of said probe needles is inserted into the heart muscle.

.fUNITE-D STATES PATENT OFFICE CERTIFICATEQE CORRECTION Dated April 5 1974 Patent No. 3,807,191

Paul 1). llarris et a1. Inventor(s) It is certifiedthat error appears inthe above-identified patent and that said Letters Patent are hereby corrected as shown below:

Abstract line 10, delete "ratio" and insert rate Column 2, line 54, delete "enery" and insert energy Eolumn 4, line 8; delete "and" and insert an Signed and sealed this 8th day of Qctober 1974.,

(SEAL) Attest:

McCOY M. GIBSON .JR. 0. MARSHALL DANN Attesting Officer Commissioner of Patents FORM Po-mso (10-69) USCOMM'DC eoan'peg U s GUVERNMENY PRNTINQ DFFKZE:

Claims (4)

1. A portable, self-powered, battery operated cardiac pacer comprising, in combination, of a pair of complementary interconnecting units comprising a disposable battery and probe package, and a stimulator package electrically and removably interconnectable one with the other, said probe package containing a battery casing, a source of battery enery in said casing, insulated positive and negative probe conductors extending from said casing, plug-in terminals in one end of said casing electrically connected with the respective probe conductors at one end thereof and with said source, a probe needle electrically connected to each of said conductors, respectively, said stimulator package comprising means foR electrical interconnection with said terminals, pulse generator means connected to said interconnecting means for generating and delivering a potential through and to said conductors and said probes in the form of a heart stimulating pulse to the heart muscle when said battery and said packages are electrically interconnected, said pulse generator means comprising a unijunction pulse generator, said probes being oppositely charged such that when said probes are applied to the heart, said probes develop an electrical potential therebetween to activate the heart muscle.
2. The invention defined in claim 1 in which is included means to select the repetitive rate of heart stimulating pulse output of said stimulator package.
3. A portable cardiac pacer comprising a casing, a source of battery power within said casing, plug-in terminals in said casing, certain of said terminals having electrical connection with the terminals of said battery power source, a pair of probe conductors having electrical connection with certain of said plug-in terminals, a pair of probe needles each having electrical connection with one of said probe conductors, a stimulation unit pulse generator means housed within said unit for generating and discharging a pulse potential, said pulse generator means comprising a unijunction pulse generator, plug-in terminals in said unit for electrical interconnection with the respective plug-in terminals carried in said battery power casing to deliver battery power to said pulse generating means and to deliver the generated pulse rate to and through said probe needles, when the respective plug-in terminals are electrically interconnected to develop and electrical potential between said probe needles to activate the heart muscle.
4. The invention defined in claim 3 including means in said stimulator unit for selecting the pulse repetitive rate delivered to and through one of said probe needles inserted into the subcutaneous tissue of the heart muscle and the other of said probe needles is inserted into the heart muscle.
US17184771 1971-08-16 1971-08-16 External cardiac pacer with separable generating and power-probe units Expired - Lifetime US3807411A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17184771 US3807411A (en) 1971-08-16 1971-08-16 External cardiac pacer with separable generating and power-probe units

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17184771 US3807411A (en) 1971-08-16 1971-08-16 External cardiac pacer with separable generating and power-probe units

Publications (1)

Publication Number Publication Date
US3807411A true US3807411A (en) 1974-04-30

Family

ID=22625370

Family Applications (1)

Application Number Title Priority Date Filing Date
US17184771 Expired - Lifetime US3807411A (en) 1971-08-16 1971-08-16 External cardiac pacer with separable generating and power-probe units

Country Status (1)

Country Link
US (1) US3807411A (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3918459A (en) * 1972-04-17 1975-11-11 Sybron Corp Constant current electrotherapy device with plug-in current control means
US3951154A (en) * 1974-04-30 1976-04-20 Medtronic, Inc. Lead connector for electro-medical device
US4010760A (en) * 1975-05-23 1977-03-08 Medtronic, Inc. Coupling assembly for implantable electromedical devices
US4026302A (en) * 1975-04-30 1977-05-31 Joseph Grayzel Method of implanting a permanent pacemaker bipolar lead apparatus and an implantable permanent pacemaker bipolar lead apparatus
US4119103A (en) * 1976-10-27 1978-10-10 Medtronic, Inc. Detachable power source with low current leakage
US4144891A (en) * 1977-04-20 1979-03-20 Medtronic, Inc. Heart stimulator lead set
WO1986001120A1 (en) * 1984-08-08 1986-02-27 Survival Technology, Inc. Injection method and apparatus with electrical blood absorbing stimulation
US4665920A (en) * 1984-11-28 1987-05-19 Minnesota Mining And Manufacturing Company Skeletal tissue stimulator and a low voltage oscillator circuit for use therein
US4795433A (en) * 1985-05-20 1989-01-03 Survival Technology, Inc. Automatic injector for emergency treatment
US5050600A (en) * 1989-10-02 1991-09-24 Parks Lance K Cardiac pacemaker
US5403353A (en) * 1993-07-30 1995-04-04 Incontrol, Inc. Post-heart surgery cardioverting system and method
US5766224A (en) * 1996-04-02 1998-06-16 Incontrol, Inc. Temporary, post-heart surgery cardioverting and pacing system and lead systems for use therein
US5792138A (en) * 1996-02-22 1998-08-11 Apollo Camera, Llc Cordless bipolar electrocautery unit with automatic power control
US20040167589A1 (en) * 2003-02-22 2004-08-26 Chester Heath Viral-inhibiting apparatus and methods
US20060235479A1 (en) * 2000-09-18 2006-10-19 Cameron Health, Inc. Monophasic waveform for anti-bradycardia pacing for a subcutaneous implantable cardioverter-defibrillator
US20070055314A1 (en) * 2000-09-18 2007-03-08 Cameron Health, Inc. Post-shock treatment in a subcutaneous device
US8706217B2 (en) 2000-09-18 2014-04-22 Cameron Health Cardioverter-defibrillator having a focused shocking area and orientation thereof
US8718760B2 (en) 2000-09-18 2014-05-06 Cameron Health Inc. Subcutaneous implantable cardioverter-defibrillator placement methods
US8831720B2 (en) 2000-09-18 2014-09-09 Cameron Health, Inc. Method of implanting and using a subcutaneous defibrillator
US9138589B2 (en) 2001-11-21 2015-09-22 Cameron Health, Inc. Apparatus and method for identifying atrial arrhythmia by far-field sensing

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US666431A (en) * 1900-08-25 1901-01-22 Albert W Courtney Electrotherapeutic apparatus.
US1913595A (en) * 1930-03-12 1933-06-13 Hyman Charles Henry Artificial pace maker for the heart
US3078850A (en) * 1960-08-26 1963-02-26 Imp Electronics Inc Electrochemotherapeutic cardiac device
FR1469132A (en) * 1965-12-28 1967-02-10 Electronique Appliquee Device for transferring an electrical current to or inside the human body
US3667477A (en) * 1966-11-25 1972-06-06 Canadian Patents Dev Implantable vesical stimulator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US666431A (en) * 1900-08-25 1901-01-22 Albert W Courtney Electrotherapeutic apparatus.
US1913595A (en) * 1930-03-12 1933-06-13 Hyman Charles Henry Artificial pace maker for the heart
US3078850A (en) * 1960-08-26 1963-02-26 Imp Electronics Inc Electrochemotherapeutic cardiac device
FR1469132A (en) * 1965-12-28 1967-02-10 Electronique Appliquee Device for transferring an electrical current to or inside the human body
US3667477A (en) * 1966-11-25 1972-06-06 Canadian Patents Dev Implantable vesical stimulator

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3918459A (en) * 1972-04-17 1975-11-11 Sybron Corp Constant current electrotherapy device with plug-in current control means
US3951154A (en) * 1974-04-30 1976-04-20 Medtronic, Inc. Lead connector for electro-medical device
US4026302A (en) * 1975-04-30 1977-05-31 Joseph Grayzel Method of implanting a permanent pacemaker bipolar lead apparatus and an implantable permanent pacemaker bipolar lead apparatus
US4010760A (en) * 1975-05-23 1977-03-08 Medtronic, Inc. Coupling assembly for implantable electromedical devices
US4119103A (en) * 1976-10-27 1978-10-10 Medtronic, Inc. Detachable power source with low current leakage
US4144891A (en) * 1977-04-20 1979-03-20 Medtronic, Inc. Heart stimulator lead set
US4832682A (en) * 1984-08-08 1989-05-23 Survival Technology, Inc. Injection method and apparatus with electrical blood absorbing stimulation
WO1986001120A1 (en) * 1984-08-08 1986-02-27 Survival Technology, Inc. Injection method and apparatus with electrical blood absorbing stimulation
US4665920A (en) * 1984-11-28 1987-05-19 Minnesota Mining And Manufacturing Company Skeletal tissue stimulator and a low voltage oscillator circuit for use therein
US4795433A (en) * 1985-05-20 1989-01-03 Survival Technology, Inc. Automatic injector for emergency treatment
US5050600A (en) * 1989-10-02 1991-09-24 Parks Lance K Cardiac pacemaker
US5403353A (en) * 1993-07-30 1995-04-04 Incontrol, Inc. Post-heart surgery cardioverting system and method
USRE35779E (en) * 1993-07-30 1998-04-28 Incontrol, Inc. Post-heart surgery cardioverting system and method
US5792138A (en) * 1996-02-22 1998-08-11 Apollo Camera, Llc Cordless bipolar electrocautery unit with automatic power control
US5766224A (en) * 1996-04-02 1998-06-16 Incontrol, Inc. Temporary, post-heart surgery cardioverting and pacing system and lead systems for use therein
US8718760B2 (en) 2000-09-18 2014-05-06 Cameron Health Inc. Subcutaneous implantable cardioverter-defibrillator placement methods
US20060235479A1 (en) * 2000-09-18 2006-10-19 Cameron Health, Inc. Monophasic waveform for anti-bradycardia pacing for a subcutaneous implantable cardioverter-defibrillator
US20070055314A1 (en) * 2000-09-18 2007-03-08 Cameron Health, Inc. Post-shock treatment in a subcutaneous device
US9144683B2 (en) 2000-09-18 2015-09-29 Cameron Health, Inc. Post-shock treatment in a subcutaneous device
US7627375B2 (en) * 2000-09-18 2009-12-01 Cameron Health, Inc. Implantable cardiac stimulus methods
US8706217B2 (en) 2000-09-18 2014-04-22 Cameron Health Cardioverter-defibrillator having a focused shocking area and orientation thereof
US8831720B2 (en) 2000-09-18 2014-09-09 Cameron Health, Inc. Method of implanting and using a subcutaneous defibrillator
US9138589B2 (en) 2001-11-21 2015-09-22 Cameron Health, Inc. Apparatus and method for identifying atrial arrhythmia by far-field sensing
US9522283B2 (en) 2001-11-21 2016-12-20 Cameron Health Inc. Apparatus and method for identifying atrial arrhythmia by far-field sensing
US9993653B2 (en) 2001-11-21 2018-06-12 Cameron Health, Inc. Apparatus and method for identifying atrial arrhythmia by far-field sensing
US20040167589A1 (en) * 2003-02-22 2004-08-26 Chester Heath Viral-inhibiting apparatus and methods
US20070073372A1 (en) * 2003-02-22 2007-03-29 Chester Heath Viral-inhibiting apparatus and methods

Similar Documents

Publication Publication Date Title
US3648707A (en) Multimode cardiac paces with p-wave and r-wave sensing means
US3667477A (en) Implantable vesical stimulator
US3595242A (en) Atrial and ventricular demand pacer
US3433228A (en) Multimode cardiac pacer
Starmer et al. Hazards of electric shock in cardiology
Hultman et al. Evaluation of methods for electrical stimulation of human skeletal muscle in situ
Zoll et al. Long-term electric stimulation of the heart for Stokes-Adams disease
US7076296B2 (en) Method of supplying energy to subcutaneous cardioverter-defibrillator and pacer
US6298267B1 (en) Method and apparatus for treatment of cardiac electromechanical dissociation
US4320763A (en) Protection device for pacemaker implantees
US6148230A (en) Method for the monitoring and treatment of spontaneous cardiac arrhythmias
AU656420B2 (en) Method and apparatus for wide area antitachycardia pacing
US4541432A (en) Electric nerve stimulator device
US5803927A (en) Electrotherapy method and apparatus for external defibrillation
US8831720B2 (en) Method of implanting and using a subcutaneous defibrillator
US4308868A (en) Implantable electrical device
KR850001302B1 (en) Physiological electrode systems
AU769902B2 (en) Antitachycardial pacing
US4340063A (en) Stimulation device
US6757563B2 (en) Cardiac rhythm management system with ultrasound for autocapture or other applications
US3729008A (en) Electrode for atrial pacing with curved end for atrial wall engagement
CA1223643A (en) Implantable cardiac defibrillator employing bipolar sensing and telemetry means
DE69723735T2 (en) Pacemaker system for prevention of atrial fibrillation
EP0360412B1 (en) System and method for detection and treatment of ventricular arrhythmias
US5562708A (en) Method and apparatus for treatment of atrial fibrillation