US4046151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Body implantable lead with stiffening stylet
Assignee: Medtronic Inc
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Filing: 1976-04-30
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Granted: 1977-09-06
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Expires: 1996-04-30
Abstract
Abstract A body implantable lead and stiffening stylet for imparting rigidity and transmitting torque to the distal end of the lead for enabling the attachment of the lead to an internal body organ. The intravascular lead carries a pin or pins at its proximal end adapted to be connected to a pulse generator and an electrode or electrodes at its distal end adapted to be securely lodged in or permanently attached to a body organ through endothelial tissue. The stiffening stylet is provided for insertion into a lumen in the lead extending from the pin along the length of the conductor to the electrode. The portion of the stylet wire to be inserted in the lumen is of a length somewhat exceeding the corresponding length of the lumen. At the proximal end of the stylet a knob is provided to engage the pin and thereby stretch the lead to effect an increase in its stiffness and torque transmitting ability.
Inventors
- 👤 Maria M. Rose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:55
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056; A61N1/057; A61N1/0573
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
148 words
A body implantable lead of material substantially inert to body fluids and tissue comprising a length of electrically insulated, flexible conductor, a connector element at the proximal end of the conductor, an electrode adapted to contact the tissue of a living animal body at the distal end of the conductor, a lumen extending the length of insulated conductor, and a stiffening stylet, said stylet further comprising: stylet wire means for insertion into said lumen for stiffening said electrical conductor, said stylet wire means having a length exceeding the length of said lumen; and means coupled to said stylet wire means at one end thereof for engaging said connector element upon insertion of said length of said stylet wire means into said lumen and for maintaining the engagement and lengthening said conductor for increasing the transmission of torque from said proximal end to said distal end of said lead.
Claim 2
Dependent Claim
148 words
A body implantable lead of material substantially inert to body fluids and tissue comprising a length of electrically insulated, flexible conductor, a connector element at the proximal end of the conductor, an electrode adapted to contact the tissue of a living animal body at the distal end of the conductor, a lumen extending the length of insulated conductor, and a stiffening stylet, said stylet further comprising: stylet wire means for insertion into said lumen for stiffening said electrical conductor, said stylet wire means having a length exceeding the length of said lumen; and means coupled to said stylet wire means at one end thereof for engaging said connector element upon insertion of said length of said stylet wire means into said lumen and for maintaining the engagement and lengthening said conductor for increasing the transmission of torque from said proximal end to said distal end of said lead.
Claim 3
Dependent Claim
26 words
The body implantable lead of claim 1 wherein said engaging means further comprises knob means having bore means for receiving and frictionally engaging said connector element.
Claim 4
Dependent Claim
31 words
The body implantable lead of claim 2 wherein said stylet wire means extends axially into said bore means, and said connector element comprises a pin for receiving said stylet wire means.
Claim 5
Dependent Claim
39 words
The body implantable lead of claim 3 wherein said bore means has a predetermined length and a tapered diameter, and said pin has an outside diameter exceeding at least a portion of the tapered diameter of said bore means.
Claim 6
Dependent Claim
163 words
A body implantable lead of material substantially inert to body fluids and tissue comprising first and second lengths of electrically insulated, flexible conductor, first and second respective connector elements at the proximal ends of said conductors, first and second respective electrodes adapted to contact the tissue of a living animal body at the distal ends of the conductors, first and second respective lumens extending the lengths of insulated conductors and a first stiffening stylet, said stylet further comprising: stylet wire means for insertion into said first respective lumen for stiffening said electrical conductor, said stylet wire means having a length exceeding the length of said first lumen; and means coupled to said stylet wire means at one end thereof for engaging said connector element upon insertion of said length of said stylet wire means into said lumen and for maintaining the engagement and lengthening said conductor for increasing the transmission of torque from said proximal end to said distal end of said lead.
Claim 7
Dependent Claim
163 words
A body implantable lead of material substantially inert to body fluids and tissue comprising first and second lengths of electrically insulated, flexible conductor, first and second respective connector elements at the proximal ends of said conductors, first and second respective electrodes adapted to contact the tissue of a living animal body at the distal ends of the conductors, first and second respective lumens extending the lengths of insulated conductors and a first stiffening stylet, said stylet further comprising: stylet wire means for insertion into said first respective lumen for stiffening said electrical conductor, said stylet wire means having a length exceeding the length of said first lumen; and means coupled to said stylet wire means at one end thereof for engaging said connector element upon insertion of said length of said stylet wire means into said lumen and for maintaining the engagement and lengthening said conductor for increasing the transmission of torque from said proximal end to said distal end of said lead.
Claim 8
Dependent Claim
26 words
The body implantable lead of claim 5 wherein said engaging means further comprises knob means having bore means for receiving and frictionally engaging said connector element.
Claim 9
Dependent Claim
38 words
The body implantable lead of claim 6 wherein said stylet wire means extends axially into said bore means, and said connector element comprises a pin for receiving said styler wire means and for extending into said bore means.
Claim 10
Dependent Claim
39 words
The body implantable lead of claim 7 wherein said bore means has a predetermined length and a tapered diameter, and said pin has an outside diameter exceeding at least a portion of the tapered diameter of said bore means.
Claim 11
Dependent Claim
78 words
The body implantable lead of claim 5 further comprising: a second stiffening stylet comprising further stylet wire means for insertion into said second respective lumen for stiffening said electrical conductor, and further engaging means coupled to the proximal end of said further stylet wire means and wherein said further engaging means further comprises attaching means for attaching both said engaging means together and for coupling said first and second connector elements and both said stylet wire means together.
Claim 12
Dependent Claim
51 words
The body implantable lead of claim 9 wherein said engaging means of said first and second stylets comprise first and second knob means, respectively, and said attaching means further comprises a male coupling member carried by said first knob means and a female coupling member carried by said second knob means.
Claim 13
Dependent Claim
29 words
The body implantable lead of claim 9 wherein at least one of said electrodes comprises a helical coil with a sharp tip adapted to be screwed into body tissue.
Claim 14
Dependent Claim
117 words
A body implantable lead of material substantially inert to body fluids and tissue having a length of electrically insulated, flexible conductor, an electrode adapted to contact the tissue of a living animal body at the distal end of the conductor, and a lumen extending the length of insulated conductor, said lead further comprising: stylet wire means for insertion into said lumen for stiffening said electrical conductor, said stylet wire means having a length exceeding the length of said lumen; and means coupled to said stylet wire means for engaging with said lead and holding at least a portion of the excess length of said stylet wire means in said lumen for increasing the tension on said lead.
Claim 15
Dependent Claim
117 words
A body implantable lead of material substantially inert to body fluids and tissue having a length of electrically insulated, flexible conductor, an electrode adapted to contact the tissue of a living animal body at the distal end of the conductor, and a lumen extending the length of insulated conductor, said lead further comprising: stylet wire means for insertion into said lumen for stiffening said electrical conductor, said stylet wire means having a length exceeding the length of said lumen; and means coupled to said stylet wire means for engaging with said lead and holding at least a portion of the excess length of said stylet wire means in said lumen for increasing the tension on said lead.
Claim 16
Dependent Claim
118 words
A body implantable lead of material substantially inert to body fluids and tissue having first and second lengths of electrically insulated, flexible conductor, first and second respective connector elements at the proximal ends of said conductors, first and second respective electrodes adapted to contact the tissue of a living animal body at the distal ends of the conductors, first and second respective lumens extending the lengths of insulated conductors and first and second respective stiffening stylets, each stylet further comprising: stylet wire means for insertion into a respective lumen for stiffening said electrical conductor; and attaching means coupled to said stylet wire means for coupling said first and second stylets together at the proximal end of said lead.
Claim 17
Dependent Claim
118 words
A body implantable lead of material substantially inert to body fluids and tissue having first and second lengths of electrically insulated, flexible conductor, first and second respective connector elements at the proximal ends of said conductors, first and second respective electrodes adapted to contact the tissue of a living animal body at the distal ends of the conductors, first and second respective lumens extending the lengths of insulated conductors and first and second respective stiffening stylets, each stylet further comprising: stylet wire means for insertion into a respective lumen for stiffening said electrical conductor; and attaching means coupled to said stylet wire means for coupling said first and second stylets together at the proximal end of said lead.
Claim 18
Dependent Claim
47 words
The body implantable lead of claim 13 wherein said first and second stylets comprise first and second knob means, respectively, and said attaching means further comprises a male coupling member carried by said first knob means and a female coupling member carried by said second knob means.
Claim 19
Dependent Claim
29 words
The body implantable lead of claim 13 wherein at least one of said electrodes comprises a helical coil with a sharp tip adapted to be screwed into body tissue.
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) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |