US6783533B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attachable/detachable reaming head for surgical reamer
Assignee: AO Technology AG
•
Filing: 2001-11-21
•
Granted: 2004-08-31
•
Expires: 2021-11-21
Abstract
Abstract A device for expedited reaming of a medullary canal having a detachable reaming head is disclosed. The device includes a reamer head connected at the distal end of a rotatable drive shaft. The reamer head has a cutting head with a plurality of blades and flutes therebetween at a first end and a plurality of resilient arms at a second end. The device may also includes an aspiration tube which fits over the rotatable drive shaft and a reamer head retainer which rotatably engages the reamer head. In addition, the reamer head may be detached from the reamer device for future re-use by using a reamer head removing device.
Inventors
- 👤 James M. Green
- 👤 Stanley J. Kmiec, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:24
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/16; A61B17/1613; A61B17/1615; A61B17/1617; A61B17/164; A61B2017/1602; A61B2217/00; A61B2217/002; A61B2217/005
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
222 words
A device for reaming a medullary canal of a bone comprising: a rotatable drive shaft having proximal and distal ends, the proximal end configured and adapted to connect to a drive element to rotate the drive shaft; and a reamer head coupled to the distal end of the drive shaft, to rotate the reamer head, said reamer head comprising: a tubular shank having a longitudinal axis and a plurality of resilient arms for engaging the distal end of the drive shaft; and a cutting head coupled with the shank and having a plurality of blades and flutes therebetween for cutting and reaming of bone; an aspiration tube for removing cut material generated by the reamer head, the aspiration tube having a manifold assembly at a proximal end and a lumen configured and dimensioned to receive the drive shaft; and a reamer head retainer having proximal and distal ends and configured and dimensioned at a proximal end to connect to a distal end of the aspiration tube and configured and dimensioned at a distal end to receive the reamer head, wherein the drive shaft and reamer head each has a cannulation, with the drive shaft cannulation aligning with the reamer head cannulation when the tubular shank and resilient arms are engaged with the drive shaft to form a center channel through the device.
Claim 2
Independent Claim
222 words
A device for reaming a medullary canal of a bone comprising: a rotatable drive shaft having proximal and distal ends, the proximal end configured and adapted to connect to a drive element to rotate the drive shaft; and a reamer head coupled to the distal end of the drive shaft, to rotate the reamer head, said reamer head comprising: a tubular shank having a longitudinal axis and a plurality of resilient arms for engaging the distal end of the drive shaft; and a cutting head coupled with the shank and having a plurality of blades and flutes therebetween for cutting and reaming of bone; an aspiration tube for removing cut material generated by the reamer head, the aspiration tube having a manifold assembly at a proximal end and a lumen configured and dimensioned to receive the drive shaft; and a reamer head retainer having proximal and distal ends and configured and dimensioned at a proximal end to connect to a distal end of the aspiration tube and configured and dimensioned at a distal end to receive the reamer head, wherein the drive shaft and reamer head each has a cannulation, with the drive shaft cannulation aligning with the reamer head cannulation when the tubular shank and resilient arms are engaged with the drive shaft to form a center channel through the device.
Claim 3
Dependent Claim
42 words
The device of claim 1 , wherein the manifold assembly has at least one port, the at least one port configured and adapted to communicate with an irrigation source, the at least one port is in fluid communication with the center channel.
Claim 4
Dependent Claim
57 words
The device of claim 1 , wherein: the manifold assembly includes an irrigation port connectable to an irrigation source and an irrigation chamber in fluid connection with the irrigation port; and the drive shaft has an opening extending from an outer surface of the drive shaft to the drive shaft cannulation and located within the irrigation chamber.
Claim 5
Dependent Claim
19 words
The device of claim 1 , wherein the manifold assembly includes an aspiration port connectable to a suction source.
Claim 6
Dependent Claim
26 words
The device of claim 1 , wherein the reamer head retainer has a plurality of ports in fluid communication with the lumen of the aspiration tube.
Claim 7
Dependent Claim
26 words
The device of claim 1 wherein the reamer head retainer couples with the reamer head permitting the reamer head to rotate with respect to the retainer.
Claim 8
Dependent Claim
24 words
The device of claim 6 , wherein the reamer head retainer has an internal shoulder for engaging the resilient arms of the reamer head.
Claim 9
Dependent Claim
45 words
The device of claim 1 , further comprising: a reamer retaining ring coupled to the proximal end of the reamer head retainer and configured and dimensioned to fixedly attach the distal end of the aspiration tube to the proximal end of the reamer head retainer.
Claim 10
Dependent Claim
45 words
The device of claim 1 , wherein the reamer head retainer has at least one protrusion located near the proximal end of the reamer head retainer for fixedly attaching the distal end of the aspiration tube to the proximal end of the reamer head retainer.
Claim 11
Independent Claim
203 words
A device for reaming a medullary canal of a bone comprising: a rotatable drive shaft having proximal and distal ends, the proximal end configured and adapted to connect to a drive element to rotate the drive shaft; and a reamer head coupled to the distal end of the drive shaft, to rotate the reamer head, said reamer head comprising: a tubular shank having a longitudinal axis, the tubular shank configured and dimensioned for engaging the distal end of the drive shaft; and a cutting head coupled with the shank and having a plurality of blades and flutes therebetween for cutting and reaming of bone; an aspiration tube for removing cut material generated by the reamer head, the aspiration tube having a lumen configured and dimensioned to receive the drive shaft; and a reamer head retainer having proximal and distal ends and configured and dimensioned at a proximal end to connect to a distal end of the aspiration tube and configured and dimensioned at a distal end to receive the reamer head, wherein the drive shaft and reamer head each has a cannulation and wherein the reamer head retainer has a plurality of ports in fluid communication with the tlumen of the aspiration tube.
Claim 12
Independent Claim
203 words
A device for reaming a medullary canal of a bone comprising: a rotatable drive shaft having proximal and distal ends, the proximal end configured and adapted to connect to a drive element to rotate the drive shaft; and a reamer head coupled to the distal end of the drive shaft, to rotate the reamer head, said reamer head comprising: a tubular shank having a longitudinal axis, the tubular shank configured and dimensioned for engaging the distal end of the drive shaft; and a cutting head coupled with the shank and having a plurality of blades and flutes therebetween for cutting and reaming of bone; an aspiration tube for removing cut material generated by the reamer head, the aspiration tube having a lumen configured and dimensioned to receive the drive shaft; and a reamer head retainer having proximal and distal ends and configured and dimensioned at a proximal end to connect to a distal end of the aspiration tube and configured and dimensioned at a distal end to receive the reamer head, wherein the drive shaft and reamer head each has a cannulation and wherein the reamer head retainer has a plurality of ports in fluid communication with the tlumen of the aspiration tube.
Claim 13
Dependent Claim
18 words
The device of claim 10 , wherein the aspiration tube includes a manifold assembly at a proximal end.
Claim 14
Dependent Claim
29 words
The device of claim 11 , wherein the manifold assembly has at least one port, the at least one port configured and adapted to communicate with an irrigation source.
Claim 15
Dependent Claim
57 words
The device of claim 11 , wherein: the manifold assembly includes an irrigation port connectable to an irrigation source and an irrigation chamber in fluid connection with the irrigation port; and the drive shaft has an opening extending from an outer surface of the drive shaft to the drive shaft cannulation and located within the irrigation chamber.
Claim 16
Dependent Claim
19 words
The device of claim 11 , wherein the manifold assembly includes an aspiration port connectable to a suction source.
Claim 17
Dependent Claim
27 words
The device of claim 10 , wherein the reamer head retainer couples with the reamer head permitting the reamer head to rotate with respect to the retainer.
Claim 18
Dependent Claim
27 words
The device of claim 10 , wherein the reamer head retainer has an internal shoulder for engaging a plurality of resilient arms formed on the reamer head.
Claim 19
Dependent Claim
45 words
The device of claim 10 , further comprising: a reamer retaining ring coupled to the proximal end of the reamer head retainer and configured and dimensioned to fixedly attach the distal end of the aspiration tube to the proximal end of the reamer head retainer.
Claim 20
Dependent Claim
45 words
The device of claim 10 , wherein the reamer head retainer has at least one protrusion located near the proximal end of the reamer head retainer for fixedly attaching the distal end of the aspiration tube to the proximal end of the reamer head retainer.
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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) | 2007-08-31 | 2008-03-01 | 2008-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-08-31 | 2012-03-01 | 2012-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-08-31 | 2016-03-01 | 2016-08-31 | $7700.00 | Window Closed / Lapsed |