Surgical cutting device removeably connected to a rotarty drive element
AssigneeSurgical Dynamics, Inc.
InventorsJames Cooper Thomas, Rick D. Roberts
Life of this patent
Estimating the term…
Abstract
A cutting device for the cutting and reduction of matter from a surgical site having a cutting head having an entry tip and a cutting blade positioned on opposed leading edges of a window formed through the interior of the cutting head. The window includes angled walls extending from each cutting blade along the circumference of the window. The cutting head is attached to a shaft for mounting the cutting device to a rotary surgical drill. The matter is removed and further reduced as the cutting head is rotated at the surgical site. The main shaft also includes depth markings for identifying the depth of the device in the surgical site. The geometry of the cutting head and entry tip can be varied for particular surgical procedures.
Claims32
A cutting device for removing tissue matter from a surgical site during a surgical procedure, which comprises:
- means for emulsifying the tissue matter during a surgical procedure;
- the emulsifying means including a cutting head having an entry tip dimensioned to facilitate entry of the cutting head within the tissue matter and two cutting blades, and defining an axis about which the cutting head rotates, each cutting blade positioned with respect to the axis to define a window extending through the cutting head, each cutting blade defining a leading cutting edge adapted to cut the tissue matter upon rotation of the cutting head in one direction of rotation, the cutting blades dimensioned and configured to generally direct tissue portions cut by the cutting edges to the window of the cutting head whereby the cut tissue portions are at least partially emulsified upon continued rotation of the cutting head, each cutting blade defining an interior wall portion extending continuously at a fixed angle from the leading cutting edge substantially through the cutting head;
- and
- means for rotatably supporting the emulsifying means during the surgical procedure.
A surgical cutting device for emulsifying matter from a surgical site comprising:
- a cutting head having an entry tip adapted to facilitate entry of the cutting head into tissue matter and two substantially rigid, autonomous cutting blades, each cutting blade located on opposed edges of a window extending through an interior portion of the cutting head such that each cutting blade forms a leading edge adapted to cut the tissue matter in the same direction of rotation, each cutting blade defining an interior wall portion extending continuously at a fixed angle from the leading edge substantially through the cutting head;
- and
- a shaft connected to the cutting head for mounting the cutting head to a rotary surgical drill.
A surgical cutting device comprising:
- a shaft connectable to a rotary surgical drill and defining a longitudinal axis;
- a cutting head mounted to the shaft for cutting and reducing tissue matter;
- the cutting head including an entry tip and two cutting blades, each cutting blade arranged about the longitudinal axis to define a window extending through the cutting head, the cutting blades having interior wall portions disposed adjacent the window, each interior wall portion arranged at a predetermined angle with respect to the longitudinal axis and extending continuously substantially through the cutting head at the predetermined angle to terminate in a leading cutting edge, the leading cutting edges adapted to cut tissue matter upon rotation of the cutting head in one direction of rotation.
A surgical cutting device for emulsifying matter from a surgical site, comprising:
- a main shaft defining a longitudinal axis;
- a mounting shaft positioned at one end of the main shaft, the mounting shaft having a diameter adapted for insertion into a surgical drill;
- and
- a cutting head positioned at another end of the main shaft opposite the mounting shaft, the cutting head having an entry tip and first and second cutting elements arranged about the longitudinal axis to define a window extending through an interior portion of the cutting head, each cutting element defining a leading cutting edge adapted to cut in the same direction of rotation and being located on an opposed edge of the window, and having an angled wall extending continuously from the leading cutting edge substantially through the cutting head at a predetermined angle, the angled wall dimensioned to facilitate directing of tissue portions cut by the cutting elements into the window whereby the cut tissue portions are at least partially emulsified upon continued rotation of the cutting head.
A cutting device for emulsifying a variety of different types of matter from a surgical site during a surgical procedure comprising:
- means for emulsifying the variety of different types of matter during the surgical procedure;
- said emulsifying means including an entry tip adapted to provide an entry of the cutting head into the variety of different types of matter to be cut by the cutting head and two hardened, autonomous, stand alone cutting blades, the cutting blades each having an interior wall arranged at a fixed angle relative to a central bisecting plane extending between the cutting blades and extending continuously substantially through the cutting head at the fixed angle, the interior walls defining a window therebetween such that each cutting blade defines a leading edge adapted to cut through the variety of different types of matter it encounters through 360.degree. in the same direction of rotation;
- and
- means for rotatably supporting the emulsifying means during the surgical procedure.
Dependencies are inferred from the claim text.