Patent US3481509A successfully refreshed from Google Patents.
US4381013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
"J" Stylet wire
Assignee: Medtronic Inc
•
Filing: 1981-03-19
•
Granted: 1983-04-26
•
Expires: 2001-03-19
Abstract
Abstract A body implantable lead having a two-piece stylet. An inner solid portion of the stylet enables a shape to be imparted to the stylet to allow proper maneuvering of the lead during implant. A second portion of the stylet is slideably located coaxially about the first portion. The second portion of the stylet permits the imposition of a torque at the distal end of the implantable lead by the turning of a knob fixedly attached to the proximal end of the second portion of the stylet. The second portion of the stylet is a helically wound coil. The two-piece stylet is inserted into the proximal end of the body implantable lead. The distal end of the body implantable lead is located in the position desired through the use of the solid inner first portion of the stylet in which a bend or other desired shape has been introduced. The body implantable lead is permanently attached to the muscle tissue by a fixation device activated through the torque supplied by the second portion of the stylet. The two portions of the stylet may be fabricated from a variety of materials.
Inventors
- 👤 Robert G. Dutcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:45
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
153 words
A body implantable lead comprising: a conductor having a proximal end and a distal end and having a lumen extending from said proximal end to said distal end; an insulating sheath covering said conductor; fixation means for securing said distal end of said conductor to body tissue; electrical connector attached to said proximal end of said conductor for electrically coupling said conductor to an electrical generator; stylet means removably located within said lumen of said conductor for imparting a curve to a portion of the distal end of the conductor for guiding placement of said distal end of said conductor; and flexible means, having a proximal end, rotatably and removably located within said lumen of said conductor coaxial to said stylet means for transferring torque induced at said proximal end of said flexible means to said fixation means while said stylet means imparts a curve to the distal end portion of said conductor.
Claim 2
Dependent Claim
153 words
A body implantable lead comprising: a conductor having a proximal end and a distal end and having a lumen extending from said proximal end to said distal end; an insulating sheath covering said conductor; fixation means for securing said distal end of said conductor to body tissue; electrical connector attached to said proximal end of said conductor for electrically coupling said conductor to an electrical generator; stylet means removably located within said lumen of said conductor for imparting a curve to a portion of the distal end of the conductor for guiding placement of said distal end of said conductor; and flexible means, having a proximal end, rotatably and removably located within said lumen of said conductor coaxial to said stylet means for transferring torque induced at said proximal end of said flexible means to said fixation means while said stylet means imparts a curve to the distal end portion of said conductor.
Claim 3
Dependent Claim
19 words
A body implantable lead according to claim 1 wherein said stylet means is inserted coaxially within said flexible means.
Claim 4
Dependent Claim
33 words
A body implantable lead according to claim 2 wherein said fixation means is a helically wound fixation coil having a sharpened tip whereby said fixation means may be screwed into said body tissue.
Claim 5
Dependent Claim
25 words
A body implantable lead according to claim 1 or 2 or 3 wherein said stylet means is a solid stylet wire having a proximal end.
Claim 6
Dependent Claim
33 words
A body implantable lead according to claim 4 wherein said flexible means has a proximal end and a distal end and has a lumen extending from said proximal end to said distal end.
Claim 7
Dependent Claim
26 words
A body implantable lead according to claim 5 wherein said flexible means further comprises a knob fixedly attached to said proximal end of said flexible means.
Claim 8
Dependent Claim
20 words
A body implantable lead according to claim 6 wherein said flexible means is of a coil of body compatible metal.
Claim 9
Dependent Claim
18 words
A body implantable lead according to claim 6 wherein said flexible means is of a body compatible plastic.
Claim 10
Dependent Claim
26 words
A body implantable lead according to claim 7 wherein said stylet means further comprises a knob fixedly attached to said proximal end of said stylet wire.
Claim 11
Dependent Claim
26 words
A body implantable lead according to claim 8 wherein said stylet means further comprises a knob fixedly attached to said proximal end of said stylet wire.
Claim 12
Dependent Claim
155 words
A body implantable lead comprising: a conductor having a proximal end and a distal end and having a lumen extending from said proximal end to said distal end; an insulative sheath covering said conductor; an electrode coupled to the distal end of said conductor; electrical connector means attached to said proximal end of said conductor for electrically coupling said conductor to an electrical generator; stylet means removably located within said lumen of said conductor for imparting a curve to a portion of the distal end of the conductor to guide the electrode to a desired position in the heart; and flexible means, having a proximal end, rotatably and removably located within the lumen of said conductor coaxial to said stylet means for transferring torque induced at said proximal end of said flexible means to the distal end of said conductor while said stylet means imparts a curve to the distal end portion of said conductor.
Claim 13
Dependent Claim
155 words
A body implantable lead comprising: a conductor having a proximal end and a distal end and having a lumen extending from said proximal end to said distal end; an insulative sheath covering said conductor; an electrode coupled to the distal end of said conductor; electrical connector means attached to said proximal end of said conductor for electrically coupling said conductor to an electrical generator; stylet means removably located within said lumen of said conductor for imparting a curve to a portion of the distal end of the conductor to guide the electrode to a desired position in the heart; and flexible means, having a proximal end, rotatably and removably located within the lumen of said conductor coaxial to said stylet means for transferring torque induced at said proximal end of said flexible means to the distal end of said conductor while said stylet means imparts a curve to the distal end portion of said conductor.
Claim 14
Dependent Claim
19 words
A body implantable lead according to claim 11 wherein said stylet means is inserted coaxially within said flexible means.
Claim 15
Dependent Claim
23 words
A body implantable lead according to claim 11 or 12 wherein said stylet means is a solid stylet wire having a proximal end.
Claim 16
Dependent Claim
33 words
A body implantable lead according to claim 13 wherein said flexible means has a proximal end and a distal end and has a lumen extending from said proximal end to said distal end.
Claim 17
Dependent Claim
26 words
A body implantable lead according to claim 14 wherein said flexible means further comprises a knob fixedly attached to said proximal end of said flexible means.
Claim 18
Dependent Claim
20 words
A body implantable lead according to claim 15 wherein said flexible means is of a coil of body compatible metal.
Claim 19
Dependent Claim
18 words
A body implantable lead according to claim 15 wherein said flexible means is of a body compatible plastic.
Claim 20
Dependent Claim
26 words
A body implantable lead according to claim 16 wherein said stylet means further comprises a knob fixedly attached to said proximal end of said stylet wire.
Claim 21
Dependent Claim
26 words
A body implantable lead according to claim 17 wherein said stylet means further comprises a knob fixedly attached to said proximal end of said stylet wire.
References Cited (Backward Citations)
US3547103A
Cited
US3788329A
Cited
US3844292A
Cited
US3890977A
Cited
US3995623A
Cited
US3974834A
Cited
US4020829A
Cited
US4046151A
Cited
US4106512A
Cited
US4180080A
Cited
US4146036A
Cited
US4217913A
Cited
US4136701A
Cited
US4136703A
Cited
US4215703A
Cited
US4209019A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-04-25 | 1986-10-25 | 1987-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-25 | 1990-10-25 | 1991-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-25 | 1994-10-25 | 1995-04-26 | $7700.00 | Window Closed / Lapsed |