US5843146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable medical lead anchor
Assignee: Medtronic Inc
•
Filing: 1997-04-30
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Granted: 1998-12-01
•
Expires: 2017-04-30
Abstract
Abstract A medical lead anchor anchors a medical lead relative to the epidural space of the spinal cord, intrathecal space, or peripheral nerve of a patient. The lead anchor comprises a sleeve having a plurality of eyelets and a passage through the sleeve. The anchor further comprises a locking device defining a collet, a collet driver and a handle. The locking device has a lead passage. The collet driver is sized to fit the passage in the sleeve and has a spiral slot to operatively engage a pin on the sleeve located in the sleeve passage. The sleeve and attached locking device are slid over the lead. The sleeve is sutured to tissue located near the location where the lead enters the epidural space. The collet and collet driver of the locking device are moved along the passage of the sleeve with the spiral slot of the collet driver operatively engaging the pin. The handle of the locking device is turned, moving the collet and collet drive as described, to advance the collet through the passage in the sleeve, thereby pinching the collet to a pre-determined tightness on the lead and thus releasably securing the lead in the desired position.
Inventors
- 👤 Thomas E. Cross, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:56
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/0551; A61N1/0558
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
86 words
A medical lead anchor, for anchoring a lead relative to the epidural space of a human spinal cord, the anchor having a body defining a lead fitting, at least one tissue fixation member, and a lead-interactive fastener defining a collet, whereby the body is fitted to the lead and fastened to human tissue adjacent the epidural space using the tissue fixation member, and the lead is fastened to the anchor against movement relative to the anchor and thereby relative to the human tissue and epidural space.
Claim 2
Dependent Claim
86 words
A medical lead anchor, for anchoring a lead relative to the epidural space of a human spinal cord, the anchor having a body defining a lead fitting, at least one tissue fixation member, and a lead-interactive fastener defining a collet, whereby the body is fitted to the lead and fastened to human tissue adjacent the epidural space using the tissue fixation member, and the lead is fastened to the anchor against movement relative to the anchor and thereby relative to the human tissue and epidural space.
Claim 3
Dependent Claim
19 words
A medical lead anchor as in claim 1, the anchor having multiple eyelets for multiple fastening to human tissue.
Claim 4
Dependent Claim
39 words
A medical lead anchor as in claim 1, the body including a sleeve for the lead, whereby the lead is placed through the sleeve and the body is moved along the lead into position relative to the human tissue.
Claim 5
Dependent Claim
43 words
A medical lead anchor as in claim 1, having a second body, the second body and the first body together defining a first-and-second-body-interactive lead-interactive fastener, whereby interaction of the second body with the first body causes fastening of the lead to the anchor.
Claim 6
Dependent Claim
37 words
A medical lead anchor as in claim 4, the first body and the second body having movement-interactive members, whereby movement of the second body relative to the first body causes fastening of the lead to the anchor.
Claim 7
Dependent Claim
40 words
A medical lead anchor as in claim 5, the second body defining a second sleeve for the lead, whereby the lead is placed through the second sleeve and the second body is moved along the lead to the first body.
Claim 8
Dependent Claim
35 words
A medical lead anchor as in claim 5, the movement interactive members including a wedge, whereby movement of the first body and the second body relative to each other wedges the wedge against the lead.
Claim 9
Dependent Claim
87 words
A medical lead anchor, for anchoring a lead relative to the epidural space of a human spinal cord, the anchor comprising: a body defining a lead fitting, and at least one eyelet; and a second body and a lead-interactive fastener defining a collet, whereby the body is fitted to the lead and fastened to human tissue adjacent the epidural space using the eyelet, and the lead is fastened to the anchor against movement relative to the anchor and thereby relative to the human tissue and epidural space.
Claim 10
Dependent Claim
87 words
A medical lead anchor, for anchoring a lead relative to the epidural space of a human spinal cord, the anchor comprising: a body defining a lead fitting, and at least one eyelet; and a second body and a lead-interactive fastener defining a collet, whereby the body is fitted to the lead and fastened to human tissue adjacent the epidural space using the eyelet, and the lead is fastened to the anchor against movement relative to the anchor and thereby relative to the human tissue and epidural space.
Claim 11
Dependent Claim
94 words
A medical lead anchor for securing and repositioning a lead in the epidural space of the spinal cord comprising: a sleeve defining at least one eyelet, and a passage through the sleeve, and a locking device defining a collet, a collet driver, and a handle portion, whereby the sleeve is fitted to the lead and fastened to human tissue adjacent the epidural space using the eyelet, and the lead is fastened to the anchor using the locking device against movement relative to the anchor and thereby relative to the human tissue and epidural space.
Claim 12
Dependent Claim
94 words
A medical lead anchor for securing and repositioning a lead in the epidural space of the spinal cord comprising: a sleeve defining at least one eyelet, and a passage through the sleeve, and a locking device defining a collet, a collet driver, and a handle portion, whereby the sleeve is fitted to the lead and fastened to human tissue adjacent the epidural space using the eyelet, and the lead is fastened to the anchor using the locking device against movement relative to the anchor and thereby relative to the human tissue and epidural space.
Claim 13
Dependent Claim
42 words
The medical lead anchor as in claim 9, wherein the collet driver of the locking device is sized to engage the passage through the sleeve, whereby interaction of the sleeve with the locking device causes fastening of the lead to the anchor.
Claim 14
Dependent Claim
20 words
The medical lead anchor as in claim 9, wherein the sleeve has multiple eyelets for multiple fastening to human tissue.
Claim 15
Dependent Claim
17 words
The medical lead anchor as in claim 9, wherein the passage through the sleeve includes a taper.
Claim 16
Dependent Claim
23 words
The medical lead anchor as in claim 9, wherein the locking device has a centerline and a lead passage through the locking device.
Claim 17
Dependent Claim
33 words
The medical lead anchor as in claim 13, wherein the collet of the locking device has at least one slit substantially parallel to the centerline of the locking device and a tapered end.
Claim 18
Dependent Claim
160 words
A medical lead anchor for securing and as needed repositioning a lead in the epidural space of the spinal cord comprising: a sleeve having a plurality of eyelets, and a passage through the sleeve, and a locking device having a collet, a collet driver, and a rotary handle, and defining a centerline and a lead passage through the locking device, the collet driver sized to engage the passage through the sleeve and having a spiral slot, the locking device pinned to the sleeve along the spiral slot, whereby the lead anchor is fitted to the lead, the sleeve fastened to human tissue adjacent the epidural space using the plurality of eyelets, the locking device rotated by manipulation of the rotary handle, rotation driving the locking device along the centerline wedging the collet in the passage against the lead, and thereby the lead is releasably fastened to the lead anchor, and further thereby relative to the human tissue and epidural space.
Claim 19
Dependent Claim
160 words
A medical lead anchor for securing and as needed repositioning a lead in the epidural space of the spinal cord comprising: a sleeve having a plurality of eyelets, and a passage through the sleeve, and a locking device having a collet, a collet driver, and a rotary handle, and defining a centerline and a lead passage through the locking device, the collet driver sized to engage the passage through the sleeve and having a spiral slot, the locking device pinned to the sleeve along the spiral slot, whereby the lead anchor is fitted to the lead, the sleeve fastened to human tissue adjacent the epidural space using the plurality of eyelets, the locking device rotated by manipulation of the rotary handle, rotation driving the locking device along the centerline wedging the collet in the passage against the lead, and thereby the lead is releasably fastened to the lead anchor, and further thereby relative to the human tissue and epidural space.
Claim 20
Dependent Claim
39 words
The medical lead anchor as in claim 15, wherein the sleeve has a pin located within the passage, whereby the pin operatively engages the spiral slot of the collet driver during locking of the locking device to the sleeve.
Claim 21
Dependent Claim
15 words
The medical lead anchor as in claim 15, wherein the collet has an internal grip.
Claim 22
Dependent Claim
30 words
The medical lead anchor as in claim 15, wherein the spiral slot of the collet driver extends to an arcuate slot section perpendicular to the centerline of the locking device.
Claim 23
Dependent Claim
58 words
The medical lead anchor as in claim 15, wherein the sleeve has bending members and protuberances thereon, and the locking device has recesses for the protuberances, the bending members bending as the locking device and the sleeve are rotated to move the protuberances into and out of the recesses, for releasably locking the locking device to the sleeve.
Claim 24
Dependent Claim
16 words
The medical lead anchor as in claim 15, wherein the collet has at least one slit.
Claim 25
Dependent Claim
199 words
A medical lead anchor for securing and repositioning a lead in the epidural space of the spinal cord comprising: a sleeve having a plurality of eyelets, and a passage through the sleeve with a taper, a locking device including a collet, a collet driver, and a handle, and defining a centerline and a lead passage through the locking device, the collet having a plurality of slits, a tapered end and an internal grip, the collet driver having a spiral slot and sized to engage the tapered passage in the sleeve, and a pin on the sleeve located within the spiral slot, whereby when the lead is properly positioned in the epidural space, the sleeve is fitted on the lead through the tapered passage in the sleeve, the sleeve may be sutured to human tissue adjacent the epidural space using the plurality of eyelets, and, as the handle of the locking device is turned, the pin travels along the spiral slot of the collet driver and advances the collet through the passage in the sleeve, pinching the collet to a pre-determined tightness on the lead and securing the lead with the internal grip of the collet in the desired position.
Claim 26
Dependent Claim
199 words
A medical lead anchor for securing and repositioning a lead in the epidural space of the spinal cord comprising: a sleeve having a plurality of eyelets, and a passage through the sleeve with a taper, a locking device including a collet, a collet driver, and a handle, and defining a centerline and a lead passage through the locking device, the collet having a plurality of slits, a tapered end and an internal grip, the collet driver having a spiral slot and sized to engage the tapered passage in the sleeve, and a pin on the sleeve located within the spiral slot, whereby when the lead is properly positioned in the epidural space, the sleeve is fitted on the lead through the tapered passage in the sleeve, the sleeve may be sutured to human tissue adjacent the epidural space using the plurality of eyelets, and, as the handle of the locking device is turned, the pin travels along the spiral slot of the collet driver and advances the collet through the passage in the sleeve, pinching the collet to a pre-determined tightness on the lead and securing the lead with the internal grip of the collet in the desired position.
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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 |