US4243050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for inserting pacemaker electrodes and the like
Assignee: LITTLEFORD ELIZABETH H
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Filing: 1979-02-05
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Granted: 1981-01-06
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Expires: 1999-02-05
Abstract
Abstract An apparatus and related method for implanting pacemaker electrodes and similar devices within a patient include an introducer with a tapered end adapted to extend into the patient's body, and a hollow, tubular sleeve having a first portion with an inner dimension greater than the outer dimension of the introducer and a second portion at one end of the sleeve which extends parallel with the introducer and in close engagement therewith, with a gradual taper along the sleeve between the first and second portions. The sleeve has a longitudinal slit along the first portion and through the taper, but short of the forward extremity, to permit the sleeve to be peeled away from the pacemaker electrode after introduction. The introducer and sleeve include corresponding hub and flange arrangements which provide a means for locking the two elements together to prevent inadvertent motion of the sleeve with respect to the introducer as the two elements are being inserted into the patient. The flange on the sleeve has a dimension extending away from the sleeve sufficient to permit the physician to place his thumb over the open extremity of the sleeve to prevent air aspiration into the patient.
Inventors
- 👤 Philip O. Littleford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:21
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/372; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/0662; A61M25/0668; A61N1/02; A61N1/04; A61N1/05; A61N1/056
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
343 words
A method for the rapid and atraumatic implantation of a permanent pacemaker into a patient, comprising the steps of: providing an encapsulated pulse pacing generator having a receptacle, and further providing a permanent pacemaker electrode having an electrode tip and a connector plug cooperable with the receptacle of the encapsulated pulse pacing generator; providing a hollow needle, a flexible guide wire dimensioned to pass through said needle, a tubular introducer having a central hole larger than said wire and a taper at its forward end, and a hollow sleeve about said introducer with means providing a flange at one end of said sleeve opposite said forward end of said introducer, with a longitudinal slit along only a portion of said sleeve and extending through said flange means so as to terminate short of the forward end of said sleeve; inserting the needle into a subclavian vein of the patient; thereafter passing the flexible guide wire through the needle and into the subclavian vein and toward the heart; thereafter removing said needle while leaving said guide wire in the subclavian vein; positioning said sleeve on said introducer such that the unslit forward end of said sleeve terminates short of said taper to thereby avoid trauma and tearing of the subclavian vein when said introducer and sleeve are subsequently inserted therein; thereafter sliding said introducer and said sleeve together along said guide wire and into the subclavian vein; thereafter removing said guide wire and said introducer, leaving said sleeve in the subclavian vein; thereafter passing said permanent pacemaker electrode down said sleeve into the subclavian vein and then into the heart so as to position said electrode tip in the heart; thereafter grasping and pulling said flange means away from said electrode and the longitudinal direction of said slit for peeling said sleeve away from said electrode and tearing the unslit portion of said sleeve for removing said sleeve from the electrode; connecting the connector plug of the electrode to the receptacle of the encapsulated pulse generator; and implanting the pulse generator into the patient.
Claim 2
Independent Claim
343 words
A method for the rapid and atraumatic implantation of a permanent pacemaker into a patient, comprising the steps of: providing an encapsulated pulse pacing generator having a receptacle, and further providing a permanent pacemaker electrode having an electrode tip and a connector plug cooperable with the receptacle of the encapsulated pulse pacing generator; providing a hollow needle, a flexible guide wire dimensioned to pass through said needle, a tubular introducer having a central hole larger than said wire and a taper at its forward end, and a hollow sleeve about said introducer with means providing a flange at one end of said sleeve opposite said forward end of said introducer, with a longitudinal slit along only a portion of said sleeve and extending through said flange means so as to terminate short of the forward end of said sleeve; inserting the needle into a subclavian vein of the patient; thereafter passing the flexible guide wire through the needle and into the subclavian vein and toward the heart; thereafter removing said needle while leaving said guide wire in the subclavian vein; positioning said sleeve on said introducer such that the unslit forward end of said sleeve terminates short of said taper to thereby avoid trauma and tearing of the subclavian vein when said introducer and sleeve are subsequently inserted therein; thereafter sliding said introducer and said sleeve together along said guide wire and into the subclavian vein; thereafter removing said guide wire and said introducer, leaving said sleeve in the subclavian vein; thereafter passing said permanent pacemaker electrode down said sleeve into the subclavian vein and then into the heart so as to position said electrode tip in the heart; thereafter grasping and pulling said flange means away from said electrode and the longitudinal direction of said slit for peeling said sleeve away from said electrode and tearing the unslit portion of said sleeve for removing said sleeve from the electrode; connecting the connector plug of the electrode to the receptacle of the encapsulated pulse generator; and implanting the pulse generator into the patient.
Claim 3
Dependent Claim
48 words
The method recited in claim 1, further comprising the step of closing off said sleeve after said step of removing said guide wire and introducer, and before passing said electrode down said sleeve, in order to prevent the aspiration of air into said sleeve and the subclavian vein.
Claim 4
Dependent Claim
35 words
The method recited in claim 1 wherein said step of sliding said introducer and sleeve together along said guide wire and into the subclavian vein includes the step of locking said sleeve to said introducer.
Claim 5
Independent Claim
368 words
A method for the rapid and atraumatic insertion of a pacemaker electrode, catheter or similar device into a subclavian vein at a point adjacent the clavicle in such a manner as to avoid tearing of, and injury to, the subclavian vein, said method comprising the steps of: providing a small, hollow needle on the order of about 18 gauge, a flexible guide wire dimensioned to pass through said needle, a tubular introducer having a central hole larger than said wire and a taper at its forward end, and a hollow sleeve about said introducer with means providing a flange at one end of said sleeve opposite said forward end of said introducer, with a longitudinal slit along only a portion of said sleeve and extending through said flange means so as to terminate short of the forward end of said sleeve; providing the pacemaker electrode, catheter, or similar device to be inserted into the subclavian vein, said device having an outer diameter sufficiently small to enable said device to pass through said sleeve; inserting said needle into the subclavian vein at a point adjacent the clavicle; thereafter passing the flexible guide wire through said needle and into the subclavian vein and toward the heart; thereafter removing said needle while leaving said guide wire positioned in the subclavian vein; positioning said sleeve on said introducer such that the unslit, forward end of said sleeve terminates short of said taper to thereby avoid trauma to the subclavian vein when said introducer and sleeve are subsequently inserted into the subclavian vein; thereafter sliding said introducer and said sleeve together along said guide wire and into the subclavian vein; thereafter removing said guide wire and said introducer, leaving said sleeve positioned in the subclavian vein; thereafter passing said pacemaker electrode, catheter, or similar device down said sleeve and into the subclavian vein; and thereafter grasping and pulling said flange means away from said pacemaker electrode, catheter, or similar device, and also away from the longitudinal direction of said slit for peeling said sleeve away from said pacemaker electrode, catheter, or similar device and tearing the unslit portion of said sleeve for removing said sleeve from said pacemaker electrode, catheter, or similar device.
Claim 6
Independent Claim
368 words
A method for the rapid and atraumatic insertion of a pacemaker electrode, catheter or similar device into a subclavian vein at a point adjacent the clavicle in such a manner as to avoid tearing of, and injury to, the subclavian vein, said method comprising the steps of: providing a small, hollow needle on the order of about 18 gauge, a flexible guide wire dimensioned to pass through said needle, a tubular introducer having a central hole larger than said wire and a taper at its forward end, and a hollow sleeve about said introducer with means providing a flange at one end of said sleeve opposite said forward end of said introducer, with a longitudinal slit along only a portion of said sleeve and extending through said flange means so as to terminate short of the forward end of said sleeve; providing the pacemaker electrode, catheter, or similar device to be inserted into the subclavian vein, said device having an outer diameter sufficiently small to enable said device to pass through said sleeve; inserting said needle into the subclavian vein at a point adjacent the clavicle; thereafter passing the flexible guide wire through said needle and into the subclavian vein and toward the heart; thereafter removing said needle while leaving said guide wire positioned in the subclavian vein; positioning said sleeve on said introducer such that the unslit, forward end of said sleeve terminates short of said taper to thereby avoid trauma to the subclavian vein when said introducer and sleeve are subsequently inserted into the subclavian vein; thereafter sliding said introducer and said sleeve together along said guide wire and into the subclavian vein; thereafter removing said guide wire and said introducer, leaving said sleeve positioned in the subclavian vein; thereafter passing said pacemaker electrode, catheter, or similar device down said sleeve and into the subclavian vein; and thereafter grasping and pulling said flange means away from said pacemaker electrode, catheter, or similar device, and also away from the longitudinal direction of said slit for peeling said sleeve away from said pacemaker electrode, catheter, or similar device and tearing the unslit portion of said sleeve for removing said sleeve from said pacemaker electrode, catheter, or similar device.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-06 | 1984-07-07 | 1985-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-06 | 1988-07-07 | 1989-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-06 | 1992-07-07 | 1993-01-06 | $7700.00 | Window Closed / Lapsed |