Source: http://www.google.com/patents/US8021368?dq=7,446,777
Timestamp: 2014-04-17 13:18:14
Document Index: 595625303

Matched Legal Cases: ['Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60']

Patent US8021368 - Methods and apparatus for improved cutting tools for resection - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA cutting tool is provided with an arcuate cutting blade that preferably engages a guide tool to create a curved resected surface during an arthorplasty procedure. In one embodiment, a depth of the cutting blade is sufficient to permit the simultaneous creation of resected surfaces on two bones that...http://www.google.com/patents/US8021368?utm_source=gb-gplus-sharePatent US8021368 - Methods and apparatus for improved cutting tools for resectionAdvanced Patent SearchPublication numberUS8021368 B2Publication typeGrantApplication numberUS 11/075,842Publication dateSep 20, 2011Filing dateMar 8, 2005Priority dateJan 14, 2004Also published asUS20060015109Publication number075842, 11075842, US 8021368 B2, US 8021368B2, US-B2-8021368, US8021368 B2, US8021368B2InventorsTimothy G. HainesOriginal AssigneeHudson Surgical Design, Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (102), Non-Patent Citations (54), Referenced by (1), Classifications (23), Legal Events (2) External Links: USPTO, USPTO Assignment, EspacenetMethods and apparatus for improved cutting tools for resectionUS 8021368 B2Abstract A cutting tool is provided with an arcuate cutting blade that preferably engages a guide tool to create a curved resected surface during an arthorplasty procedure. In one embodiment, a depth of the cutting blade is sufficient to permit the simultaneous creation of resected surfaces on two bones that articulate, such as both the femor and the tibia for a given condyle, without the need to reposition the guide or the leg. In another embodiment, a cutting member has a generally rectangular cross-section along a longitudinal axis with a first and second surface having cutting teeth defined thereon and a third and fourth surface adapted to interface with a cutting guide positioned proximate the bone. In this embodiment, the cutting tool can resect the bone in two different directions without reorienting the cutting member.
CLAIM TO PRIORITY The present invention claims priority to U.S. Provisional Application No. 60/551,307, filed Mar. 8, 2004, entitled, �METHODS AND APPARATUS FOR IMPROVED CUTTING TOOLS FOR RESECTION,� and claims priority to U.S. Provisional Application No. 60/551,080, filed Mar. 8, 2004, entitled, �METHODS AND APPARATUS FOR PIVOTABLE GUIDE SURFACES FOR ARTHROPLASTY,� and claims priority to U.S. Provisional Application No. 60/551,078, filed Mar. 8, 2004, entitled, �METHODS AND APPARATUS FOR MINIMALLY INVASIVE RESECTION,� and claims priority to U.S. Provisional Application No. 60/551,096, filed Mar. 8, 2004, entitled, �METHODS AND APPARATUS FOR ENHANCED RETENTION OF PROSTHETIC IMPLANTS,� and claims priority to U.S. Provisional Application No. 60/551,631, filed Mar. 8, 2004, entitled, �METHODS AND APPARATUS FOR CONFORMABLE PROSTHETIC IMPLANTS,� and claims priority to U.S. Provisional Application No. 60/551,262, filed Mar. 8, 2004, entitled, �METHODS AND APPARATUS FOR IMPROVED DRILLING AND MILLING TOOLS FOR RESECTION,� and claims priority to U.S. Provisional Application No. 60/551,160, filed Mar. 8, 2004, entitled, �METHODS AND APPARATUS FOR IMPROVED PROFILE BASED RESECTION,� and is a continuation-in-part of U.S. patent application Ser. No. 11/036,584, filed Jan. 14, 2005, entitled, �METHODS AND APPARATUS FOR PINPLASTY BONE RESECTION,� which claims priority to U.S. Provisional Application No. 60/536,320, filed Jan. 14, 2004, and is a continuation-in-part of U.S. patent application Ser. No. 11/049,634, filed Feb. 2, 2005 now abandoned, entitled, �METHODS AND APPARATUS FOR WIREPLASTY BONE RESECTION,� which claims priority to U.S Provisional Application No. 60/540,992, filed Feb. 2, 2004, entitled, �METHODS AND APPARATUS FOR WIREPLASTY BONE RESECTION,� the entire disclosures of which are hereby fully incorporated by reference.
SUMMARY OF THE INVENTION The present invention provides for embodiments of cutting tools and soft tissue management techniques facilitating intraoperative and postoperative efficacy and ease of use. In one embodiment, the cutting tool is a side cutting tool that has only a portion of the arc of the cutting profile exposed for cutting and is preferably used in a dynamic cutting mode where the leg is moved in flexion to engage the exposed portion of the cutting profile. In another embodiment, a cutting tool having dual planar cutting profile, preferably orthogonal to each other, permits the cutting tool to be utilized to create multiple resected surfaces at different orientations without the need to disengage the cutting tool from the guide surfaces. In still another embodiment, the cutting tool is provided with an arcuate cutting blade that preferably engages a guide tool with spaced apart guide surfaces that permit the creation of resected surfaces on both the femor and the tibia for a given condyle without the need to reposition the guide or the leg.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS It should be noted that, in many of the figures, the cut surface created by the cutting tool in accordance with the techniques of the present invention are shown as having already been completed for the sake of clarity. Similarly, the bones may be shown as being transparent or translucent for the sake of clarity. The guides/pins, cutting tool, bones, and other items disclosed are may be similarly represented for the sake of clarity or brevity
FIGS. 1 through 4 FIGS. 1 and 2 show conventional surgical exposures and instrumentation being utilized. FIG. 4 shows a reduced incision currently utilized in performing the current state of the art in �minimally invasive� Unicondylar Knee Replacement.
FIGS. 130 through 146 FIG. 130 represents a distal femur with the cuts shown for fixation to a conventional total condylar implant with the border of said cuts shown in black. FIGS. 131 through 146 show embodiments of the present invention for cutting the distal and posterior areas of the femur.
FIGS. 154 through 168 FIGS. 154 to 161 show an embodiment of the present invention for performing femoral resection with an oscillating, radiofrequency, or ultrasonic driver. The cutting tool shown in FIGS. 154 and 155 is rotated about the centerline of the shaft within a limited arc of motion, similar to an oscillating saw driver, however the direction of cutting is parallel to the drive axis of the saw driver rather than normal to it as is conventionally known. In this manner, the cutting tool is capable of creating resected geometries closely mimicking natural anatomic bone shapes while enabling the resection of bone through minimal surgical exposures. As shown in comparing FIGS. 158 through 161, instead of creating a flat posterior cut, this invention allows for the creation of cuts with a curved cutting profile. FIG. 161 represents the ability of this concept to be used to simultaneously make all tibial and femoral cuts in a single plunging motion, and that this would be attained simply by modifying the thickness of the posterior femoral cutting portion of the cutter by the amount indicated in FIG. 159, perhaps making the difference between the radius responsible for femoral resection geometry and the radius responsible to tibial resection geometry of around 5 mm to 15 mm for a Unicondylar replacement or 5 mm to 20 mm for cortical to conventional tricompartmental replacement. It should be noted that all of the femoral cuts, and optionally the proximal tibial cut, could be made in this manner and the location and orientation of the cuts would be based off of the guide hole shown in the distal femur in FIG. 56 for making with the shaft of the cutter. Alternatively, a shaft or other guide feature could be inserted into the distal femur and the cutting tool possess a mating female feature for that shaft. This invention offers significant improvements in both minimizing soft tissue displacement and intraoperative time savings as compared to the Oxford Unicondylar Instrumentation.
FIGS. 5 through 11 FIGS. 5 through 11 concentrate on alignment guide and/or drill guide techniques. FIG. 5 shows a manually operated alignment guide suitable for use with surgical exposures similar to that shown in FIG. 2 (it should be noted that surgical navigation sensors could be used to assist in determining final drill guide location and orientation). FIGS. 6 and 7 show an improvement upon the embodiment shown in FIG. 5 for enabling manual alignment guide use in less invasive incisions by providing soft tissue accommodating contours or reliefs. In other words, for a medial parapatellar incision, the alignment guide is configured to allow for appropriate contact and referencing of the distal and posterior femoral condyles, the IM canal (when not relying on an extramedullary reference or inference of the mechanical axis) or IM Rod, the anterior cortex or anterior runout point of a given or proposed implant size (via a stylus not shown), and the epicondylar axis via palpitation or visual reference while the patellar tendon, patella, and/or quadriceps tendon is draped over the lateral side (right side as shown in the figures) of the alignment guide allowing insertion of the guide when the patella is neither everted not fully dislocated as in conventional techniques. It should be noted that initial alignment indicated by reference of the distal femur may be further adjusted in all six degrees of freedom as a fine tuning for final cut location and orientation. This simply calls for the inclusion of additional adjustment of the location and orientation of the crossbar mechanism and/or rotational alignment arm, with respect to the initial reference provide for by contact between the body of the guide and the bone (optionally including the IM Rod), in flexion-extension angulation, varus-valgus angulation (rotational angulation and Anterior-Posterior location are already shown), mediolateral location (represented in this embodiment of the current invention by the cross bar mechanism in FIG. 5 where drill guide mediolateral location is shown as being independently and infinitely adjustable), and proximal-distal location (as shown in FIGS. 5, 6, and 7�it should be noted that this adjustment might be best embodied in an infinitely adjustable slide as opposed to the incrementally adjustable slide shown, and that simple marking would be present indicating the relative movement of the slide with respect to the body). It may be desirable to only utilize only a medial drill guide plate with multiple drill guide bushings to create holes extending partially or completely across the femur depending upon the manner in which the guides are to be connected to the femur.
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No. 12/638,692, filed Dec. 15, 2009, Haines.52Uvehammer et al., "In Vivo Kinematics of Total Knee Arthroplasty: Concave Versus Posterior-Stabilised Tibial Joint Surface", vol. 82-B, No. 4, May 2000, pp. 499-505.53Whiteside Ortholoc Total Knee System: Surgical Procedure, Dow Corning Wright, pp. WMT000001-WMT000040, Jun. 1985.54Zimmer, Insall/Burstein II, Constrained Condylar: Modular Knee System, 35 pages, copyright 1989.Referenced byCiting PatentFiling datePublication dateApplicantTitleUS20100160919 *Mar 3, 2010Jun 24, 2010Howmedica Osteonics Corp.Femoral component and instrumentation* Cited by examinerClassifications U.S. Classification606/88, 606/87, 606/82International ClassificationA61B17/60, A61B17/58, A61F2/00Cooperative ClassificationA61B17/1675, A61B17/155, A61F2/38, A61B17/157, A61B17/1757, A61F2/3859, A61B17/1764, A61B17/15, A61B2017/1602, A61F2002/3895, A61B17/1671, A61F2310/00011European ClassificationA61B17/17S4, A61F2/38F, A61B17/17S8, A61F2/38, A61B17/15Legal EventsDateCodeEventDescriptionJan 25, 2013ASAssignmentOwner name: PUGET BIOVENTURES LLC, WASHINGTONFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HUDSON SURGICAL DESIGN, INC.;REEL/FRAME:029691/0033Effective date: 20130115Jun 1, 2010ASAssignmentEffective date: 20100505Owner name: HUDSON SURGICAL DESIGN, INC.,WASHINGTONFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HAINES, TIMOTHY G;REEL/FRAME:24462/529Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HAINES, TIMOTHY G;REEL/FRAME:024462/0529Owner name: HUDSON SURGICAL DESIGN, INC., WASHINGTONRotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google