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Patent US6328743B2 successfully refreshed from Google Patents.
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US6328743B2 Expired / Lapsed US ⏱️ 0.0 years remaining

Device for postoperative fixation back into the cranium of a plug of bone removed therefrom during a surgical operation

Assignee: Individual
•
Filing: 2001-04-06
•
Granted: 2001-12-11
•
Expires: 2021-04-06
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Abstract

Abstract A device for rapid reattachment of a bone flap to a cranium after a surgical operation is provided. The device comprises a pin comprising an elongated shaft, an inner disk and an outer disk. At least the outer disk comprises a central bore. The pin and inner disk are adapted to be assembled together to form a pin and inner disk assembly such that the inner disk is located at one end of the pin. The outer disk is adapted to be mounted on the shaft of the pin with the shaft of the pin extending through the central bore of the outer disk. The device is operated by (i) positioning the inner disk on the inside of the cranium with the shaft of the pin extending through the kerf between the bone flap and the cranium, (ii) forcing the outer disk downwardly on the shaft of the pin toward the inner disk until the outer disk securely engages the outside of the bone flap and the cranium, such that the bone flap is securely held in place between the inner disk and the outer disk, and (iii) trimming off an excess portion of the shaft extending out beyond the outer disk.

Inventors

  • 👤 Karl-Dieter Lerch

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 19:03
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/688; A61B17/683

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 214 words
A method for constructing and using a device for rapid reattachment of a bone flap to a cranium after a surgical operation, wherein the method comprises: (i) constructing a device comprising: (a) a pin comprising and elongated shaft; (b) an inner disk; and (c) an outer disk, wherein the outer disk comprises a central bore; (ii) assembling the pin and inner disk together to form a pin and inner disk assembly such that the inner disk is located at one end of the pin; (iii) mounting the outer disk on the shaft of the pin with the shaft of the pin extending into and out of the central bore of the outer disk; (iv) positioning the device such that the inner disk is positioned in the inside of the cranium with the shaft of the pin extending into and out of the kerf between the bone flap and the cranium; (v) longitudinally moving the outer disk downwardly on the shaft of the pin toward the inner disk until disk securely engages the outside of the bone flap and the cranium, such that the bone flap is securely held in place between the inner disk and the outer disk; and (vi) trimming off an excess portion of the shaft extending out beyond the outer disk.
Claim 2
Independent Claim 214 words
A method for constructing and using a device for rapid reattachment of a bone flap to a cranium after a surgical operation, wherein the method comprises: (i) constructing a device comprising: (a) a pin comprising and elongated shaft; (b) an inner disk; and (c) an outer disk, wherein the outer disk comprises a central bore; (ii) assembling the pin and inner disk together to form a pin and inner disk assembly such that the inner disk is located at one end of the pin; (iii) mounting the outer disk on the shaft of the pin with the shaft of the pin extending into and out of the central bore of the outer disk; (iv) positioning the device such that the inner disk is positioned in the inside of the cranium with the shaft of the pin extending into and out of the kerf between the bone flap and the cranium; (v) longitudinally moving the outer disk downwardly on the shaft of the pin toward the inner disk until disk securely engages the outside of the bone flap and the cranium, such that the bone flap is securely held in place between the inner disk and the outer disk; and (vi) trimming off an excess portion of the shaft extending out beyond the outer disk.

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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) 2004-12-10 2005-06-11 2005-12-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2008-12-10 2009-06-11 2009-12-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2012-12-10 2013-06-11 2013-12-11 $7700.00 Window Closed / Lapsed

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