Patent US3915174A successfully refreshed from Google Patents.
US3915174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pacing apparatus and improved catheter
Assignee: Individual
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Filing: 1974-02-04
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Granted: 1975-10-28
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Expires: 1994-02-04
Abstract
Abstract Improved apparatus and method for temporary or permanent pacing, comprising a catheter having a first pacing electrode positioned for placement in the patient''s heart and a second pacing electrode positioned to be within the patient''s body but sufficiently proximal that it is outside the patient''s heart, the electrodes being connected through respective leads within the catheter to a Pacemaker (registered trademark, U.S. Patent Office) with the first electrode connected as the cathode. The Pacemaker may be external for temporary pacing, or implantable for permanent pacing.
Inventors
- 👤 Thomas A Preston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:16
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
179 words
Implantable pacing system apparatus, comprising: a. a pacing circuit adapted to be implanted in a human patient; b. a catheter adapted for insertion through a portion of the patient''s circulatory system into the heart, said catheter having a first pacing electrode at a first end and a second pacing electrode positioned at least a distance of 17 cm from said first electrode, said catheter having electrical leads each connecting to a respective one of said electrodes; c. signal connecting means for connecting said pacing circuit to said electrical leads at said catheter''s other end so that the pacing signals generated by said pacing circuit are connected to said pacing electrodes with the first pacing electrode being the cathode and the second pacing electrode being the anode; and d. whereby when said pacing circuit is implanted in a patient and said catheter is inserted so that said first pacing electrode is in the patient''s heart and said second pacing electrode is outside of the patient''s heart and within the patient''s circulatory system, said system provides cathodal pacing of the patient.
Claim 2
Dependent Claim
179 words
Implantable pacing system apparatus, comprising: a. a pacing circuit adapted to be implanted in a human patient; b. a catheter adapted for insertion through a portion of the patient''s circulatory system into the heart, said catheter having a first pacing electrode at a first end and a second pacing electrode positioned at least a distance of 17 cm from said first electrode, said catheter having electrical leads each connecting to a respective one of said electrodes; c. signal connecting means for connecting said pacing circuit to said electrical leads at said catheter''s other end so that the pacing signals generated by said pacing circuit are connected to said pacing electrodes with the first pacing electrode being the cathode and the second pacing electrode being the anode; and d. whereby when said pacing circuit is implanted in a patient and said catheter is inserted so that said first pacing electrode is in the patient''s heart and said second pacing electrode is outside of the patient''s heart and within the patient''s circulatory system, said system provides cathodal pacing of the patient.
Claim 3
Dependent Claim
23 words
The pacing system apparatus as described in claim 1, wherein said second pacing electrode is positioned 17-29 cm from said first pacing electrode.
Claim 4
Dependent Claim
94 words
A catheter adapted for insertion through a patient''s circulatory system into the patient''s heart, for use in cardiac pacing, including demand pacing, of the patient, comprising: a. an elongated flexible catheter having two conducting leads extending through respective lengths thereof; b. a distal pacing electrode positioned near a first end of said catheter, and connected electrically to a first of said leads; and c. a proximal pacing electrode positioned on said catheter at a distance of at least about 17 cm from said distal electrode and connected electrically to the second of said leads.
Claim 5
Dependent Claim
94 words
A catheter adapted for insertion through a patient''s circulatory system into the patient''s heart, for use in cardiac pacing, including demand pacing, of the patient, comprising: a. an elongated flexible catheter having two conducting leads extending through respective lengths thereof; b. a distal pacing electrode positioned near a first end of said catheter, and connected electrically to a first of said leads; and c. a proximal pacing electrode positioned on said catheter at a distance of at least about 17 cm from said distal electrode and connected electrically to the second of said leads.
Claim 6
Dependent Claim
25 words
The apparatus as described in claim 3, wherein said proximal pacing electrode is positioned within a range of about 17-29 cm from said distal electrode.
Claim 7
Dependent Claim
57 words
The catheter as described in claim 3 in combination with a pacing generator for generating pacing signals, and with connecting means for connecting said pacing generator to said catheter leads so that said pacing signals are operatively connected between said pacing electrodes such that said distal electrode is the cathode and said proximal electrode is the anode.
Claim 8
Dependent Claim
115 words
Catheter apparatus adapted to be positioned in a patient for use in cardiac pacing of the patient, with a predetermined end extending into the patient''s heart, comprising: a. an elongated flexible catheter having three conducting leads; b. a distal pacing electrode positioned on said catheter near said predetermined end thereof, and connected electrically to a first of said leads; c. a proximal pacing electrode positioned on said catheter at a distance at least about 17 cm from said distal electrode, and connected electrically to a second of said leads; and d. a sensing electrode positioned within the range of 1-15 cm proximal to said distal electrode and connected electrically to the third of said leads.
Claim 9
Dependent Claim
115 words
Catheter apparatus adapted to be positioned in a patient for use in cardiac pacing of the patient, with a predetermined end extending into the patient''s heart, comprising: a. an elongated flexible catheter having three conducting leads; b. a distal pacing electrode positioned on said catheter near said predetermined end thereof, and connected electrically to a first of said leads; c. a proximal pacing electrode positioned on said catheter at a distance at least about 17 cm from said distal electrode, and connected electrically to a second of said leads; and d. a sensing electrode positioned within the range of 1-15 cm proximal to said distal electrode and connected electrically to the third of said leads.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |