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US 6,848,152 B2Granted
Method of forming barbs on a suture and apparatus for performing same
AssigneeQuill Medical, Inc.
InventorsPerry Genova, Robert C. Williams, III, Warren Jewett
Life of this patent
Estimating the term…
Abstract
A method of making a barbed suture by varying the blade geometry and/or the movement of the blade when cutting a suture. The method can also be accomplished with a cutting device to create a plurality of barbs on the exterior of surgical suture. The barbs produced using the method with the cutting device can be the same or random configurations.
Claims29
A method of cutting barbs on a suture having a longitudinal axis, said method comprising the steps of:
- providing a suture;
- providing a cutting blade;
- twisting said suture along a y-axis prior to cutting;
- creating a barb on said suture by the motion of the blade which takes into account a cutting action by the blade on the suture in three dimensions along x-y-z axes of the suture caused by blade geometry in conjunction with blade motion;
- and
- providing a means for moving the blade to cause said cutting action to create the barb.
3 more elements
A method of cutting barbs on a suture having a longitudinal axis, said method comprising the steps of:
- providing a suture:
- providing a cutting blade;
- creating a barb on said suture by the motion of the blade which takes into account a cutting action by the blade on the suture in three dimensions alone x-y-z axes of the suture;
- and
- providing a means for moving the blade to cause said cutting action to create the barb,
- wherein the motion of the blade causes cutting along the x-y-z axes.
3 more elements
An apparatus for cutting barbs on a suture comprising:
- a cutting bed on which a suture is maintained in place, said suture having x-y-z axes wherein the y-axis is a longitudinal axis of the suture, the x-axis is perpendicular to the longitudinal axis and the z-axis is at 90° with respect to the x-axis;
- means for causing a blade assembly to contact the suture in a predetermined manner;
- and
- said blade assembly comprising a plurality of cutting blades having a geometry, and means for moving said cutting blades along the x-axis of the suture at a plurality of locations with the movement of the blades and the blades' geometry, producing a plurality of barbs on said suture, wherein the blade geometry causes a cutting action on the suture along two axes with the motion of the blade causing a cutting action along the remaining axis.
1 more element
An apparatus for cutting barbs on a suture according to comprising:
- a cutting bed on which a suture is maintained in place, said suture having x-y-z axes wherein the y-axis is a longitudinal axis of the suture, the x-axis is perpendicular to the longitudinal axis and the z-axis is at 90° with respect to the x-axis;
- means for twisting said suture along a y-axis prior to cutting;
- means for causing a blade assembly to contact the suture in a predetermined manner;
- and
- said blade assembly comprising a plurality of cutting blades having a geometry, and means for moving said cutting blades along the x-axis of the suture at a plurality of locations with the movement of the blades and the blades' geometry, producing a plurality of barbs on said suture.
2 more elements
An apparatus for cutting barbs on a suture comprising:
- a cutting bed on which a suture is maintained in place, said suture having x-y-z axes wherein the y-axis is a longitudinal axis of the suture, the x-axis is perpendicular to the longitudinal axis and the z-axis is at 90° with respect to the x-axis;
- means for causing a blade assembly to contact the suture in a predetermined manner;
- and
- said blade assembly comprising a plurality of cutting blades having a geometry, and means for moving said cutting blades in the x and y axes of the suture at a plurality of locations with the movement of the blades and the blades' geometry, producing a plurality of barbs on said suture, wherein the blade geometry causes a cutting action on the suture alone two axes with the motion of the blade causing a cutting action along the remaining axis.
1 more element
An apparatus for cutting barbs on a suture comprising:
- a cutting bed on which a suture is maintained in place, said suture having x-y-z axes wherein the y-axis is a longitudinal axis of the suture, the x-axis is perpendicular to the longitudinal axis and the z-axis is at 90° with respect to the x-axis;
- means for twisting said suture along a y-axis prior to cutting;
- means for causing a blade assembly to contact the suture in a predetermined manner;
- and
- said blade assembly comprising a plurality of cutting blades having a geometry, and means for moving said cutting blades in the x and y axes of the suture at a plurality of locations with the movement of the blades and the blades' geometry, producing a plurality of barbs on said suture.
2 more elements
An apparatus for cutting barbs on a suture comprising:
- a cutting bed on which a suture is maintained in place, said suture having x-y-z axes wherein the y-axis is a longitudinal axis of the suture, the x-axis is perpendicular to the longitudinal axis and the z-axis is at 90° with respect to the x-axis;
- means for causing a blade assembly to contact the suture in a predetermined manner;
- and
- said blade assembly comprising a plurality of cutting blades and means for moving said cutting blades in the x and y and z axes of the suture at a plurality of locations with the movement of the blades, producing a plurality of barbs on said suture, wherein the blade geometry causes a cutting action on the suture along two axes with the motion of the blade causing a cutting action along the remaining axis.
1 more element
An apparatus for cutting barbs on a suture comprising:
- a cutting bed on which a suture is maintained in place, said suture having x-y-z axes wherein the y-axis is a longitudinal axis of the suture, the x-axis is perpendicular to the longitudinal axis and the z-axis is at 90° with respect to the x-axis;
- means for twisting said suture alone a y-axis prior to cutting;
- means for causing a blade assembly to contact the suture in a predetermined manner;
- and
- said blade assembly comprising a plurality of cutting blades having a geometry, and means for moving said cutting blades in the x and y and z axes of the suture at a plurality of locations with the movement of the blades, producing a plurality of barbs on said suture.
2 more elements
A method of cutting a barb on a suture, said method comprising the steps of:
- providing a suture having a longitudinal axis;
- twisting said suture along its longitudinal axis;
- and
- cutting a barb on said suture when in its twisted state.
1 more element
A method of cutting barbs on a suture having a longitudinal axis, said method comprising the steps of:
- providing a suture;
- providing a cutting blade;
- creating a barb on said suture by a motion of the blade which takes into account a cutting action by the blade on the suture in three dimensions along x-y-z axes of the suture caused by blade geometry in conjunction with blade motion;
- and
- providing a means for moving the blade to cause said cutting action to create the barb,
- wherein the blade geometry causes a cutting action on the suture along two axes with the motion of the blade causing a cutting action along the remaining axis.
3 more elements
Dependencies are inferred from the claim text.