Patent US4892102A successfully refreshed from Google Patents.
US4892102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cardiac pacing and/or sensing lead and method of use
Assignee: TPL-CORDIS Inc A DE CORP
•
Filing: 1986-09-26
•
Granted: 1990-01-09
•
Expires: 2006-09-26
Abstract
Abstract A cardiac sensing and pacing lead primarily for transvenous insertion in the heart and connection to a pacemaker or other measuring or stimulating device. The lead includes a triple electrode configuration wherein three electrodes located axially along the lead are connected such that the two outer electrodes are electrically connected together and to a suitable input port, and the middle electrode is connected to the same input port forming a shielded bipolar sensing element which when inserted in the heart permits strong near field sensing and excellent far field rejection of electrical signals. Epicardial and myocardial lead versions of the above endocardial lead are also described.
Inventors
- 👤 Eliezer A. Astrinsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:07
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
200 words
A method for sensing electrical signals associated with muscular depolarization in a chamber of a heart without sensing electrical signals (a) associated with muscular depolarization in other chambers of the heart or (b) otherwise extraneous to the electrical signals being sensed and for pacing the heart, said method comprising the steps of: pacing a chamber of a heart; providing sensing circuitry; placing a sensor assembly mounted on an endocardial lead and including three spaced apart ring electrodes connected to the sensing circuitry, into a heart chamber; sensing, with the middle one of the three ring electrodes relative to the outer two electrodes placed in the one heart chamber, electrical signals associated with muscular depolarization in the one heart chamber, connecting the two outer electrodes together and to the sensing circuitry and connecting the middle ring electrode to the sensing circuitry; rejecting with the equi-potential state of the two outer ring electrodes in the heart in the area of the middle ring electrode, electrical signals (a) associated with muscular depolarization in other chambers of the heart or (b) otherwise extraneous to the electrical signals being sensed, thereby to prevent such other electrical signals from being sensed by the middle ring electrode.
Claim 2
Independent Claim
200 words
A method for sensing electrical signals associated with muscular depolarization in a chamber of a heart without sensing electrical signals (a) associated with muscular depolarization in other chambers of the heart or (b) otherwise extraneous to the electrical signals being sensed and for pacing the heart, said method comprising the steps of: pacing a chamber of a heart; providing sensing circuitry; placing a sensor assembly mounted on an endocardial lead and including three spaced apart ring electrodes connected to the sensing circuitry, into a heart chamber; sensing, with the middle one of the three ring electrodes relative to the outer two electrodes placed in the one heart chamber, electrical signals associated with muscular depolarization in the one heart chamber, connecting the two outer electrodes together and to the sensing circuitry and connecting the middle ring electrode to the sensing circuitry; rejecting with the equi-potential state of the two outer ring electrodes in the heart in the area of the middle ring electrode, electrical signals (a) associated with muscular depolarization in other chambers of the heart or (b) otherwise extraneous to the electrical signals being sensed, thereby to prevent such other electrical signals from being sensed by the middle ring electrode.
Claim 3
Dependent Claim
54 words
The method of claim 1 including the step of providing a bipolar sensing system and wherein said step of rejecting is further accomplished by connecting the middle ring electrode to a first terminal of the bipolar sensing system and connecting said two outer ring electrodes to a second terminal of the bipolar sensing system.
Claim 4
Dependent Claim
37 words
The method of claim 1 wherein said step of sensing includes placing said endocardial lead in the atrium of the heart and placing said sensor assembly adjacent to a wall of the atrium to sense atrial depolarization.
Claim 5
Dependent Claim
30 words
The method of claim 1 wherein said pacing step includes pacing a second chamber of the heart in response to electrical signals sensed in the one chamber of the heart.
Claim 6
Dependent Claim
60 words
The method of claim 4 wherein said step of pacing is accomplished by providing a pacing electrode on a distal end portion of the endocardial lead so as to form an endocardial pacing lead and positioning the pacing electrode in a ventricle of the heart while at the same time positioning the sensor assembly in an atrium of the heart.
Claim 7
Dependent Claim
45 words
The method of claim 5 wherein said endocardial lead has a distal end and said step of pacing is further accomplished by placing the pacing electrode at the distal end of the endocardial lead, and placing the distal end at the apex of the ventricle.
Claim 8
Dependent Claim
180 words
Apparatus for sensing electrical signals associated with muscular depolarization in a chamber of a heart without sensing electrical signals (a) associated with muscular depolarization in other chambers of the heart or (b) otherwise extraneous to the electrical signals being sensed and for pacing the heart, said apparatus comprising: sensing/pacing circuitry; an endocardial lead; a pacing electrode on said endocardial lead connected to said sensing/pacing circuitry; a sensor assembly including three spaced apart ring electrodes coupled to said sensing/pacing circuitry and mounted on said endocardial lead for placement in one chamber of a heart for sensing with the middle ring electrode, electrical signals in the one chamber of the heart, said electrical signals being associated with muscular depolarization in the one chamber, and rejecting means including said two outer ring electrodes connected together and to said sensing/pacing circuitry for rejecting, in the heart, electrical signals (a) associated with muscular depolarization in other chambers of the heart or (b) otherwise extraneous to the electrical signals being sensed, thereby to prevent such other electrical signals from being sensed by said middle ring electrode.
Claim 9
Dependent Claim
180 words
Apparatus for sensing electrical signals associated with muscular depolarization in a chamber of a heart without sensing electrical signals (a) associated with muscular depolarization in other chambers of the heart or (b) otherwise extraneous to the electrical signals being sensed and for pacing the heart, said apparatus comprising: sensing/pacing circuitry; an endocardial lead; a pacing electrode on said endocardial lead connected to said sensing/pacing circuitry; a sensor assembly including three spaced apart ring electrodes coupled to said sensing/pacing circuitry and mounted on said endocardial lead for placement in one chamber of a heart for sensing with the middle ring electrode, electrical signals in the one chamber of the heart, said electrical signals being associated with muscular depolarization in the one chamber, and rejecting means including said two outer ring electrodes connected together and to said sensing/pacing circuitry for rejecting, in the heart, electrical signals (a) associated with muscular depolarization in other chambers of the heart or (b) otherwise extraneous to the electrical signals being sensed, thereby to prevent such other electrical signals from being sensed by said middle ring electrode.
Claim 10
Dependent Claim
53 words
The apparatus of claim 7 wherein said sensing/pacing circuitry includes a bipolar sensing system and said rejecting means includes a connection of said middle ring electrode to a first terminal of said bipolar sensing system and a connection of said two outer ring electrodes to a second terminal of said bipolar sensing system.
Claim 11
Dependent Claim
60 words
The apparatus of claim 7 wherein said endocardial lead has a distal end and wherein said sensing middle ring electrode is mounted on said lead body at a predetermined location from said distal end for placement of said sensor assembly adjacent to a wall of an atrium for sensing atrial depolarization when said endocardial lead is placed in the heart.
Claim 12
Dependent Claim
39 words
The apparatus of claim 7 wherein said pacing electrode is positioned on said endocardial lead at a location for pacing a second chamber of the heart in response to electrical signals sensed in the one chamber of the heart.
Claim 13
Dependent Claim
81 words
The apparatus of claim 10 wherein said endocardial lead has a distal end portion and said pacing electrode is mounted on said distal end portion of said endocardial lead so as to form an endocardial pacing lead, said sensing middle ring electrode being located at a predetermined distance from said pacing electrode whereby, when said lead is placed in a heart, said pacing electrode is located in the ventricle and said sensing electrode is located in the atrium of the heart.
Claim 14
Dependent Claim
40 words
The apparatus of claim 11 wherein said endocardial lead has a distal end and said pacing electrode is mounted at said distal end of said endocardial lead, whereby said pacing electrode can be placed at the apex of the ventricle.
Claim 15
Independent Claim
188 words
A method for sensing electrical signals associated with muscular depolarization in a chamber of a heart without sensing electrical signals (a) associated with muscular depolarization in other chambers of the heart or (b) otherwise extraneous to the electrical signal being sensed, said method comprising the steps of: providing sensing circuitry; placing a sensor assembly, mounted on an endocardial lead and including three spaced apart ring electrodes connected to the sensing circuitry, into a heart chamber; sensing, with the middle one of the three ring electrodes relative to the outer two electrodes placed in the one heart chamber, electrical signals associated with muscular depolarization in the one heart chamber, connecting the two outer electrodes together and to the sensing circuitry connecting the middle ring electrode to the sensing circuitry; rejecting with the equi-potential state of the two outer ring electrodes in the heart in the area of the middle ring electrode, electrical signals (a) associated with muscular depolarization in other chambers of the heart or (b) otherwise extraneous to the electrical signals being sensed, thereby to prevent such other electrical signals from being sensed by the middle ring electrode.
Claim 16
Independent Claim
188 words
A method for sensing electrical signals associated with muscular depolarization in a chamber of a heart without sensing electrical signals (a) associated with muscular depolarization in other chambers of the heart or (b) otherwise extraneous to the electrical signal being sensed, said method comprising the steps of: providing sensing circuitry; placing a sensor assembly, mounted on an endocardial lead and including three spaced apart ring electrodes connected to the sensing circuitry, into a heart chamber; sensing, with the middle one of the three ring electrodes relative to the outer two electrodes placed in the one heart chamber, electrical signals associated with muscular depolarization in the one heart chamber, connecting the two outer electrodes together and to the sensing circuitry connecting the middle ring electrode to the sensing circuitry; rejecting with the equi-potential state of the two outer ring electrodes in the heart in the area of the middle ring electrode, electrical signals (a) associated with muscular depolarization in other chambers of the heart or (b) otherwise extraneous to the electrical signals being sensed, thereby to prevent such other electrical signals from being sensed by the middle ring electrode.
Claim 17
Dependent Claim
168 words
Apparatus for sensing electrical signals associated with muscular depolarization in a chamber of a heart without sensing electrical signals (a) associated with muscular depolarization in other chambers of the heart or (b) otherwise extraneous to the electrical signals being sensed and for pacing the heart, said apparatus comprising: sensing circuitry; an endocardial lead; a sensor assembly including three spaced apart ring electrodes coupled to said sensing circuitry and mounted on said endocardial lead for placement in one chamber of a heart for sensing with the middle ring electrode, electrical signals in the one chamber of the heart, said electrical signals being associated with muscular depolarization in the one chamber, and rejecting means including the two outer ring electrodes connected together and to said sensing circuitry for rejecting, in the heart, electrical signals (a) associated with muscular depolarization in other chambers of the heart or (b) otherwise extraneous to the electrical signals being sensed, thereby to prevent such other electrical signals from being sensed by said middle ring electrode.
Claim 18
Dependent Claim
168 words
Apparatus for sensing electrical signals associated with muscular depolarization in a chamber of a heart without sensing electrical signals (a) associated with muscular depolarization in other chambers of the heart or (b) otherwise extraneous to the electrical signals being sensed and for pacing the heart, said apparatus comprising: sensing circuitry; an endocardial lead; a sensor assembly including three spaced apart ring electrodes coupled to said sensing circuitry and mounted on said endocardial lead for placement in one chamber of a heart for sensing with the middle ring electrode, electrical signals in the one chamber of the heart, said electrical signals being associated with muscular depolarization in the one chamber, and rejecting means including the two outer ring electrodes connected together and to said sensing circuitry for rejecting, in the heart, electrical signals (a) associated with muscular depolarization in other chambers of the heart or (b) otherwise extraneous to the electrical signals being sensed, thereby to prevent such other electrical signals from being sensed by said middle ring electrode.
References Cited (Backward Citations)
US3405715A
Cited
US3857398A
Cited
US3825015A
Cited
US3902501A
Cited
US4280514A
Cited
US4125116A
Cited
US4156429A
Cited
US4281668A
Cited
US4365639A
Cited
US4402328A
Cited
US4458695A
Cited
US4493329A
Cited
US4579119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-08 | 1993-07-10 | 1994-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-08 | 1997-07-10 | 1998-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-08 | 2001-07-10 | 2002-01-09 | $7700.00 | Window Closed / Lapsed |