Instrument and method to enhance articular cartilage regeneration
AssigneeDePuy Synthes Products, Inc.
InventorsJohn R. Cournoyer, Dina Belloli, Jonathan Correia, Scott Woodruff, Bethany F. Grant, Joseph Hernandez
Life of this patent
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Abstract
A perforation instrument and method of using same, including a shaft capable of being inserted into a joint of a patient, having a longitudinal axis, and carrying at least one piercing member, each piercing member having a tip suitable to pierce sub-chondral bone. The instrument is capable of being altered between an exposed condition wherein the tip of the at least one piercing member is exposed and a safety condition wherein the tip of the at least one piercing member is not capable of piercing tissue.
Claims15
A perforation instrument constructed of medical-grade materials, comprising:
- a shaft capable of being inserted into a joint of a patient, having a longitudinal axis, and carrying at least one piercing member, each piercing member having a pointed tip suitable to pierce sub-chondral bone;
- and
- at least one actuation mechanism to alter the instrument between an exposed condition wherein the tip of the at least one piercing member is exposed and pointed in a direction such that rotation of the shaft can drive the tip into contact with the sub-chondral bone, and a safety condition wherein the tip of the at least one piercing member is not capable of piercing tissue.
A perforation instrument constructed of medical-grade materials, comprising:
- a handle graspable by a hand of a user;
- a shaft capable of being inserted into a joint of a patient, having a proximal end connected to the handle, having a longitudinal axis, and carrying at least two piercing members at a distal end, each piercing member having a pointed tip suitable to pierce sub-chondral bone to a depth sufficient to release marrow-derived cells;
- and
- at least one actuation mechanism to alter the instrument between an exposed condition wherein the tip of each of the at least two piercing members is exposed and pointed in a direction such that rotation of the shaft can drive the tip into contact with the sub-chondral bone and a safety condition wherein the tip of the at least two piercing members is not capable of piercing tissue.
Dependencies are inferred from the claim text.