Patent number 8529568 is assigned to
The following quote was obtained by the news editors from the background information supplied by the inventors: "Generally, joint surgery, such as implantation of prostheses, includes cutting of bone and cartilage tissue. For example, total knee replacement (TKR) involves surgical resection of the entire or the majority of the articular surface of one or more bones. With these procedures, the marrow space is reamed in order to fit the stem of the prosthesis. Less invasive joint arthoplasties, such as those described in U.S. Patent Publication No. 20030216669 also will generally involve some shaping of the cartilage and/or bone in the target joint.
"Various tools are currently available for cutting cartilage and bone. Commercially available osteotomes typically have a single straight or curved cutting surface. See, e.g., HOKE,
"Surgical tools having a cylindrical cutting surface have also been described. See, e.g., U.S. Pat. No. 4,203,444 to Bonnell and U.S. Pat. No. 6,679,917. However, cylindrical configuration of the rotating cutting edges typically creates a depression with a curved, concave surface, as opposed to a box-like depression with more or less flattened sides. As much as the surgeon may attempt to match the equator of the concavity, removal of additional tissue always leaves behind a ridge or protrusion on the treated surface. Such protrusions are particularly disadvantageous in joint surgery where jagged or protruding surfaces on cartilage or bone can inhibit free joint movement and lead to pain and inflammation after surgery.
"Thus, there remains a need for surgical cutting devices that readily create a cartilage or bone surface that is more or less normal in topography for the joint or region being treated after desired tissue is removed, thereby avoiding the production of ridges, protuberances or odd shaping that may hinder or make joint movement painful after surgery. There is a further need for a surgical cutting device that permits more efficient cutting and sculpting of tissue in order to reduce the duration of surgery."
In addition to the background information obtained for this patent, NewsRx journalists also obtained the inventor's summary information for this patent: "It is a general object of the invention to provide a surgical cutting device that is capable of creating a substantially normal surface after tissue removal. More specifically, the invention provides a versatile and efficient surgical cutting tool that removes cartilage and/or bone in two directions. Furthermore, the cutting blades may be curved in either a convex or concave orientation (relative to the surface to be cut), thereby allowing the blades to conform to bone and cartilage curvature or create a desired curvature that better fits an implant.
"In one aspect, the invention includes a surgical device for cutting and removing target tissue such as cartilage and bone within a body, the device comprising: a handle; and a cutting element attached to the handle, the cutting element comprising at least two cutting surfaces, wherein the cutting surfaces cut tissue when the device is pushed or pulled along the target tissue. In certain embodiments, the cutting surfaces are blades, abrasion surfaces, or combinations thereof. One or more cutting surfaces can be disposed on opposite sides of the cutting element or, alternatively, one or more cutting surfaces can be disposed on the same side of the cutting surface.
"Any of the devices described herein may further comprise a carrier, wherein the cutting element is disposed within the carrier.
"In any of the devices described herein, the cutting element may be curved on one or both of the two cutting surfaces.
"In another aspect, the invention includes a surgical device for cutting and removing target tissue such as cartilage and bone within a body, the device comprising: a handle; and cutting means attached to the handle, the cutting means comprising at least two cutting surfaces, wherein the cutting means cuts tissue when the device is pushed or pulled along the target tissue. In certain embodiments, the cutting means is curved one or both of the two cutting surfaces.
"In another aspect, the invention includes a kit comprising one or more surgical devices described herein and one or more joint implants.
"In yet another aspect, the invention includes a surgical device for revising a cartilage surface comprising: a handle; a carrier attached to a proximal end of the hand position substantially within a plane; and a cutting element disposed within the carrier such that a blade of the cutting element is at an angle relative to the plane of the carrier. In certain embodiments, the handle and the cutting element are formed integrally. In other embodiments, the cutting element is removable. In any of the devices described herein, the cutting element may have a plurality of blades, for example at least two.
"In any of the devices described herein, the cutting element may comprise two cutting surfaces disposed such that the surfaces oppose each other. In addition, in any of the devices described herein, the cutting surfaces may be pivotally mounted.
"These and other objects and advantages of the invention will become more fully apparent when the following detailed description of the invention is read in conjunction with the accompanying drawings."
URL and more information on this patent, see: Bouadi, Hacene. Surgical Cutting Tool. U.S. Patent Number 8529568, filed
Keywords for this news article include: Surgery,
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2013, NewsRx LLC
Most Popular Stories
- Apple Wants Samsung to Pay $22M for Patent Dispute Legal Bills
- NASA Fellowships, Scholarships Bring Diversity to Workforce
- Twitter Coming to Phones Without Internet
- Dish Network Leads 2013 Top 50 Advertisers List
- Networks Vie for U.S. Hispanic TV Viewers
- Ad Counts Rise in 2013 for Hispanic Magazines
- Jobs Report Brings Cheer As Unemployment Drops to Five-year Low
- Starbucks Gets Grinchy; No Gingerbread Lattes for Tampa Customers
- Entravision Initiates Quarterly Cash Dividend
- Warner Bros. Unleashes 'Hobbit: Desolation of Smaug' Merchandise