US4549557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pacemaker electrode
Assignee: Individual
•
Filing: 1983-11-01
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Granted: 1985-10-29
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Expires: 2003-11-01
Abstract
Abstract An improved pacemaker electrode has a plurality of flexible barbs at the end thereof which is inserted into the human heart. Each barb is provided with at least one opening through which heart tissue can grow to anchor the electrode in the heart. Each barb also has a rear rib bifurcated by a gap which communicates with the rearmost opening in the barb. The gap allows the trabeculae to be trapped acutely in the opening during initial insertion to prevent the tip from becoming dislodged.
Inventors
- 👤 A-Hadi I. Hakki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:43
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056; A61N1/057
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
100 words
In an electrode for insertion into the human heart, the electrode having an electrically conductive contact at an end thereof, a flexible electric conductor connected to the contact a flexible insulating sheath rearward of the contact and encasing the conductor, and at least one flexible barb, each barb comprising an arm connected to said flexible insulating sheath adjacent said contact defining an opening therebetween, the improvment comprising a bifurcated rib comprising a first rib element connected to the arm and a second rib element connected to the sheath, said rib elements being separated by a gap communicating with said opening.
Claim 2
Dependent Claim
100 words
In an electrode for insertion into the human heart, the electrode having an electrically conductive contact at an end thereof, a flexible electric conductor connected to the contact a flexible insulating sheath rearward of the contact and encasing the conductor, and at least one flexible barb, each barb comprising an arm connected to said flexible insulating sheath adjacent said contact defining an opening therebetween, the improvment comprising a bifurcated rib comprising a first rib element connected to the arm and a second rib element connected to the sheath, said rib elements being separated by a gap communicating with said opening.
Claim 3
Dependent Claim
33 words
In an electrode for insertion into the human heart, the improvement according to claim 1 including a rib connecting said sheath and arm at a location intermediate the contact and the bifurcated rib.
Claim 4
Dependent Claim
126 words
In an electrode for insertion into the human heart, the electrode having an electrically conductive contact at an end thereof, a flexible electric conductor connected to the contact, a flexible insulating sheath rearward of the contact and encasing the conductor, and at least one flexible barb, each barb comprising an arm connected to said flexible insulating sheath adjacent said contact defining an opening therebetween, said opening being divided by a mid-rib connecting said arm and sheath, the improvement comprising a bifurcated rib rearward of the mid-rib comprising a first rib element connected to said arm and a second rib element connected to said sheath, said rib elements being separated by a gap communicating with the portion of said opening between said bifurcated rib and the mid-rib.
Claim 5
Dependent Claim
126 words
In an electrode for insertion into the human heart, the electrode having an electrically conductive contact at an end thereof, a flexible electric conductor connected to the contact, a flexible insulating sheath rearward of the contact and encasing the conductor, and at least one flexible barb, each barb comprising an arm connected to said flexible insulating sheath adjacent said contact defining an opening therebetween, said opening being divided by a mid-rib connecting said arm and sheath, the improvement comprising a bifurcated rib rearward of the mid-rib comprising a first rib element connected to said arm and a second rib element connected to said sheath, said rib elements being separated by a gap communicating with the portion of said opening between said bifurcated rib and the mid-rib.
Claim 6
Dependent Claim
26 words
In an electrode for insertion into the human heart, the improvement according to claims 1 or 2 wherein said gap is located proximal to said sheath.
Claim 7
Dependent Claim
24 words
In an electrode for insertion into the human heart, the improvement according to claim 1 wherein said gap is located proximal to said arm.
Claim 8
Dependent Claim
27 words
In an electrode for insertion into the human heart, the improvement according to claim 1 wherein said gap is located approximately mid-way between the arm and sheath.
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) | 1988-10-28 | 1989-04-29 | 1989-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-28 | 1993-04-29 | 1993-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-28 | 1997-04-29 | 1997-10-29 | $7700.00 | Window Closed / Lapsed |