Patent US6332886B1 successfully refreshed from Google Patents.
US6332886B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical reamer and method of using same
Assignee: Synthes USA LLC
•
Filing: 2000-02-02
•
Granted: 2001-12-25
•
Expires: 2020-02-02
Abstract
Abstract A device for expedited reaming of a medullary canal and method of using the same are 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. Each blade has a front cutting portion. The blades can also include a side cutting portion. The disclosed method for removing material from the medullary canal of a bone includes the steps of reaming an area of the medullary canal to remove material; irrigating the material to be removed while reaming to reduce generation of heat and move removed material from the reaming area; and aspirating the removed material while reaming to create a negative intramedullary canal pressure to assist in the removal of the material.
Inventors
- 👤 James M. Green
- 👤 Alexandre N. Perrier
- 👤 Stanley J. Kmiec, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:16
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/16; A61B17/1613; A61B17/1615; A61B17/1617; A61B17/164; A61B2017/0023; A61B17/32; A61B17/320068; A61B2017/320084
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
144 words
A device for reaming a medullary canal of a bone comprising: a rotatable drive shaft having proximal and distal ends and connected at a proximal end to a rotational drive element for causing rotation of the drive shaft; and a reamer head coupled to the distal end of the drive shaft, said reamer head comprising: a tubular shank having a longitudinal axis and engaging the distal end of the drive shaft; and a cutting head integral with the shank and having a plurality of blades and flutes therebetween for cutting and reaming of bone; wherein each blade has inner and outer blade walls, a front cutting portion and a helical side cutting portion, with the front cutting portion comprising at least two planar surfaces and a front cutting edge defined by an intersection between the inner blade wall and one of the planar surfaces.
Claim 2
Independent Claim
144 words
A device for reaming a medullary canal of a bone comprising: a rotatable drive shaft having proximal and distal ends and connected at a proximal end to a rotational drive element for causing rotation of the drive shaft; and a reamer head coupled to the distal end of the drive shaft, said reamer head comprising: a tubular shank having a longitudinal axis and engaging the distal end of the drive shaft; and a cutting head integral with the shank and having a plurality of blades and flutes therebetween for cutting and reaming of bone; wherein each blade has inner and outer blade walls, a front cutting portion and a helical side cutting portion, with the front cutting portion comprising at least two planar surfaces and a front cutting edge defined by an intersection between the inner blade wall and one of the planar surfaces.
Claim 3
Dependent Claim
32 words
The device according to claim 1 wherein the front cutting edge is oriented at an angle from about 30° to about 45° with respect to the longitudinal axis of the tubular shank.
Claim 4
Dependent Claim
32 words
The device according to claim 1 wherein the helical side cutting portion further comprises a side cutting edge defined by an intersection between the inner blade wall and the outer blade wall.
Claim 5
Dependent Claim
17 words
The device according to claim 1 wherein the front cutting portion includes at least three planar surfaces.
Claim 6
Dependent Claim
14 words
The device of claim 1 wherein the cutting head has at least five blades.
Claim 7
Dependent Claim
45 words
The device of claim 1 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 is engaged with the drive shaft to form a center channel through the device.
Claim 8
Independent Claim
195 words
A device for reaming a medullary canal of a bone comprising: a rotatable drive shaft having proximal and distal ends and connected at a proximal end to a rotational drive element for causing rotation of the drive shaft; a reamer head coupled to the distal end of the drive shaft, said reamer head comprising: a tubular shank having a longitudinal axis and engaging the distal end of the drive shaft; and a cutting head integral with the shank and having a plurality of blades and flutes therebetween for cutting and reaming of bone; and an aspiration tube for removing cut material generated by the reamer head, the aspiration tube having a manifold assembly at a proximal end, a reamer head retainer at a distal end, and a lumen configured and dimensioned to receive the drive shaft, wherein at least some of the blades have a front cutting portion with at least two planar surfaces and 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 is engaged with the drive shaft to form a center channel through the device.
Claim 9
Independent Claim
195 words
A device for reaming a medullary canal of a bone comprising: a rotatable drive shaft having proximal and distal ends and connected at a proximal end to a rotational drive element for causing rotation of the drive shaft; a reamer head coupled to the distal end of the drive shaft, said reamer head comprising: a tubular shank having a longitudinal axis and engaging the distal end of the drive shaft; and a cutting head integral with the shank and having a plurality of blades and flutes therebetween for cutting and reaming of bone; and an aspiration tube for removing cut material generated by the reamer head, the aspiration tube having a manifold assembly at a proximal end, a reamer head retainer at a distal end, and a lumen configured and dimensioned to receive the drive shaft, wherein at least some of the blades have a front cutting portion with at least two planar surfaces and 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 is engaged with the drive shaft to form a center channel through the device.
Claim 10
Dependent Claim
33 words
The device of claim 7 wherein the center channel is in fluid communication with an irrigation source to provide irrigation to the cutting head to assist in the removal of the cut material.
Claim 11
Dependent Claim
56 words
The device of claim 8 wherein: the manifold assembly includes an irrigation port connectable to the irrigation source and an irrigation chamber in fluid communication 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 12
Dependent Claim
29 words
The device of claim 9 wherein the drive shaft opening has curved walls to draw irrigation into the center channel from the irrigation chamber as the drive shaft rotates.
Claim 13
Dependent Claim
38 words
The device of claim 7 wherein the lumen of the aspiration tube is in fluid communication with the plurality of flutes at the distal end and is in fluid communication with a suction source at the proximal end.
Claim 14
Dependent Claim
18 words
The device of claim 11 wherein the manifold assembly includes an aspiration port connectable to the suction source.
Claim 15
Dependent Claim
16 words
The device of claim 7 wherein the reamer head retainer has a substantially spherical outer profile.
Claim 16
Dependent Claim
76 words
A method for removing material from a medullary canal of a bone comprising the steps of: reaming an area of the medullary canal with the device of claim 8 to remove the material; irrigating the material to be removed while reaming to reduce generation of heat and move removed material from the reaming area; and aspirating the removed material while reaming to create a negative intramedullary canal pressure to assist in the removal of the material.
Claim 17
Dependent Claim
22 words
The method of claim 14 further comprising the step of inserting an implant in the medullary canal after the removal of material.
Claim 18
Dependent Claim
19 words
The method of claim 14 wherein the reaming is done with a single reaming device to reduce reaming time.
Claim 19
Dependent Claim
29 words
The method of claim 16 which further comprises guiding the reaming device into the medullary canal using a guide wire which passes through a cannulation in the reaming device.
Claim 20
Dependent Claim
17 words
The method of claim 14 further comprising the step of harvesting the removed material for future use.
References Cited (Backward Citations)
US3528425A
Cited
US3732858A
Cited
US3584629A
Cited
US3976077A
Cited
US4445509A
Cited
US4553957A
Cited
US4573979A
Cited
US4649919A
Cited
US4735604A
Cited
US4646738A
Cited
US4842578A
Cited
US4751922A
Cited
US4811734A
Cited
US4867157A
Cited
US4844064A
Cited
US4904238A
Cited
US4830000A
Cited
US5112299A
Cited
US5019036A
Cited
US5074841A
Cited
US5122134A
Cited
EP0440371A1
Cited
US5007917A
Cited
US5269785A
Cited
US5577517A
Cited
US5403317A
Cited
US5694951A
Cited
US5935131A
Cited
US5114399A
Cited
US5224929A
Cited
US5217479A
Cited
EP0508710A1
Cited
US5190548A
Cited
JPH05103790A
Cited
US5312408A
Cited
US5405348A
Cited
US5487747A
Cited
US5693062A
Cited
US5690634A
Cited
US5443468A
Cited
EP0666059A2
Cited
US5489291A
Cited
US5569284A
Cited
US5759185A
Cited
US5556399A
Cited
US5971988A
Cited
WO1996031307A1
Cited
US5569254A
Cited
WO1996039956A1
Cited
US5928241A
Cited
US5968048A
Cited
WO1997003617A1
Cited
WO1997016118A1
Cited
US6042593A
Cited
US5720749A
Cited
US5685673A
Cited
WO1997038635A1
Cited
WO1997039685A1
Cited
JPH1043193A
Cited
US5792167A
Cited
US5916231A
Cited
EP0836833A2
Cited
JPH10118084A
Cited
US5913867A
Cited
JPH10216138A
Cited
DE19719051A1
Cited
US5922003A
Cited
US5913859A
Cited
US5980525A
Cited
US6053923A
Cited
US6001112A
Cited
US6132448A
Cited
US5951561A
Cited
US5947972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-12-24 | 2005-06-25 | 2005-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-12-24 | 2009-06-25 | 2009-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-12-24 | 2013-06-25 | 2013-12-25 | $7700.00 | Window Closed / Lapsed |