US5843153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steerable endocardial lead using magnetostrictive material and a magnetic field
Assignee: Intermedics Inc
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Filing: 1997-07-15
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Granted: 1998-12-01
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Expires: 2017-07-15
Abstract
Abstract Magnetically alterable material, such as magnetostrictive material, is used in combination with a suitable substrate and a suitable magnetic field to produce a stylet and lead assembly that curves in response to a suitable magnetic field.
Inventors
- 👤 Matthew M. Johnston
- 👤 Steven R. Conger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:45
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056; A61B; A61B34/00; A61B34/70; A61B34/73; A61M; A61M25/00; A61M25/01; A61M25/0105; A61M25/0127; A61B2034/731; A61B2034/733; A61M25/0133; A61M25/0158
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
75 words
In an implantable stylet, the improvement comprising: a first member; and a second member comprising a magnetostrictive material, wherein in the presence of a given magnetic field, the percent change in length of said second member is different than the percent change in length of said first member, further wherein said second member is fixedly coupled to said first member to cause said implantable stylet to curve under the influence of a given magnetic field.
Claim 2
Dependent Claim
75 words
In an implantable stylet, the improvement comprising: a first member; and a second member comprising a magnetostrictive material, wherein in the presence of a given magnetic field, the percent change in length of said second member is different than the percent change in length of said first member, further wherein said second member is fixedly coupled to said first member to cause said implantable stylet to curve under the influence of a given magnetic field.
Claim 3
Dependent Claim
27 words
The stylet of claim 1, wherein said first member is configured to receive said second member such that said second member is enclosed inside said first member.
Claim 4
Dependent Claim
27 words
The stylet of claim 1, wherein said first member is an elongated member and said second member is affixed to said first member along a longitudinal interface.
Claim 5
Dependent Claim
13 words
The stylet of claim 1, wherein said first member comprises a non-magnetic metal.
Claim 6
Dependent Claim
37 words
In an implantable stylet, the improvement comprising: a first member; a second member coupled to said first member, said second member comprising a magnetostrictive material, and a handle being fixedly coupled to one end of said stylet.
Claim 7
Dependent Claim
37 words
In an implantable stylet, the improvement comprising: a first member; a second member coupled to said first member, said second member comprising a magnetostrictive material, and a handle being fixedly coupled to one end of said stylet.
Claim 8
Dependent Claim
56 words
In an implantable stylet, the improvement comprising: a first elongated member; a second elongated member being coupled longitudinally to said first elongated member, said second elongated member comprising a magnetostrictive material, wherein said first elongated member is secured to said second elongated member such that said implantable stylet bends when disposed in a suitable magnetic field.
Claim 9
Dependent Claim
56 words
In an implantable stylet, the improvement comprising: a first elongated member; a second elongated member being coupled longitudinally to said first elongated member, said second elongated member comprising a magnetostrictive material, wherein said first elongated member is secured to said second elongated member such that said implantable stylet bends when disposed in a suitable magnetic field.
Claim 10
Dependent Claim
29 words
The stylet of claim 6, wherein said second elongated member undergoes a different percent change in length than said first elongated member in response to a suitable magnetic field.
Claim 11
Dependent Claim
56 words
In an implantable stylet, the improvement comprising: a first elongated member; a second elongated member being coupled longitudinally to said first elongated member, said second elongated member comprising a magnetostrictive material; and a third elongated member, said third elongated member being coupled longitudinally to said first elongated member, said third elongated member comprising a magnetostrictive material.
Claim 12
Dependent Claim
56 words
In an implantable stylet, the improvement comprising: a first elongated member; a second elongated member being coupled longitudinally to said first elongated member, said second elongated member comprising a magnetostrictive material; and a third elongated member, said third elongated member being coupled longitudinally to said first elongated member, said third elongated member comprising a magnetostrictive material.
Claim 13
Dependent Claim
26 words
The stylet of claim 8, wherein said second elongated member and said third elongated member are disposed in a predetermined angular relationship relative to one another.
Claim 14
Dependent Claim
43 words
In an implantable stylet the improvement comprising: a first elongated member; a second elongated member being coupled longitudinally to said first elongated member, said second elongated member comprising a magnetostrictive material; and a handle being fixedly coupled to one end of said stylet.
Claim 15
Dependent Claim
43 words
In an implantable stylet the improvement comprising: a first elongated member; a second elongated member being coupled longitudinally to said first elongated member, said second elongated member comprising a magnetostrictive material; and a handle being fixedly coupled to one end of said stylet.
Claim 16
Dependent Claim
39 words
A lead assembly for implantation in a patient, comprising: a lead adapted to transmit electrical impulses; a first member coupled to said lead; and a second member coupled to said first member, said second member comprising a magnetostrictive material.
Claim 17
Dependent Claim
39 words
A lead assembly for implantation in a patient, comprising: a lead adapted to transmit electrical impulses; a first member coupled to said lead; and a second member coupled to said first member, said second member comprising a magnetostrictive material.
Claim 18
Dependent Claim
28 words
The lead assembly of claim 11, wherein said first member is an elongated member and said second member is affixed to said first member along a longitudinal interface.
Claim 19
Dependent Claim
14 words
The lead assembly of claim 11, wherein said first member comprises a non-magnetic metal.
Claim 20
Dependent Claim
28 words
The lead assembly of claim 11, wherein said second member undergoes a different percent change in length than said first member in response to a suitable magnetic field.
Claim 21
Dependent Claim
34 words
The lead assembly of claim 14, wherein said lead assembly is configured to curve in response to said suitable magnetic field, the degree of curvature depending on the strength of said suitable magnetic field.
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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) | 2001-11-30 | 2002-06-01 | 2002-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-30 | 2006-06-01 | 2006-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-11-30 | 2010-06-01 | 2010-12-01 | $7700.00 | Window Closed / Lapsed |