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US 10,080,570 B2Granted
System, apparatus, and method for grafting tissue
AssigneeThe Curators of the University of Missouri
InventorsFerris M. Pfeiffer, Aaron M. Stoker, James L. Cook
Life of this patent
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Abstract
Systems, apparatus, and methods may be adapted for grafting tissue at a tissue site that may include an elongate housing and a plurality of elongate cutting members. The plurality of elongate cutting members may define a cutting surface at a distal end of the elongate housing. The cutting surface may be adapted to contract from a first diameter to a second diameter that is less than the first diameter. The contraction of the cutting surface from the first diameter to the second diameter may define a tapered profile between the first diameter and the second diameter suitable for obtaining a tapered graft.
Claims15
A method of grafting tissue at a tissue site, comprising:
- inserting a tapered graft tissue having an external taper into a corresponding tapered socket at the tissue site, wherein the tapered graft tissue having an external taper is obtained by:
- positioning a plunger at a distal end of an elongate housing defining a bore having a longitudinal axis to place an annular cutting surface defined by a plurality of elongate cutting members in a first diameter, the plunger having an external surface slidably disposed in the bore of the elongate housing, and wherein the elongate cutting members are biased against the external surface of the plunger at the distal end of the elongate housing;
- inserting the annular cutting surface longitudinally into a donor tissue source;
- displacing the plunger toward a proximal end of the elongate housing with donor tissue entering the bore of the elongate housing as the annular cutting surface advances into the donor tissue source;
- and
- contracting the annular cutting surface from the first diameter to a second diameter that is less than the first diameter along a tapered profile as the plunger is displaced.
3 more elements
A method of grafting tissue at a tissue site, comprising:
- obtaining a tapered graft tissue having an insertion end and an exposed end separated by a length, the tapered graft tissue having a first diameter at the exposed end that is larger than a second diameter at the insertion end, the length between the first diameter and the second diameter defining an external taper, wherein said tapered graft tissue defining an external taper is obtained by:
- positioning a plunger at a distal end of an elongate housing defining a bore having a longitudinal axis to place an annular cutting surface defined by a plurality of elongate cutting members in a first diameter, the plunger having an external surface slidably disposed in the bore of the elongate housing, and wherein the elongate cutting members are biased against the external surface of the plunger at the distal end of the elongate housing;
- inserting the annular cutting surface longitudinally into a donor tissue source;
- displacing the plunger toward a proximal end of the elongate housing with donor tissue entering the bore of the elongate housing as the annular cutting surface advances into the donor tissue source;
- and
- contracting the annular cutting surface from the first diameter to a second diameter that is less than the first diameter along a tapered profile as the plunger is displaced;
- preparing a tapered socket in the tissue site for receiving the tapered graft tissue, the tapered socket defining an internal taper that substantially corresponds to the external taper of the tapered graft tissue;
- and
- inserting the tapered graft tissue into the tapered socket.
6 more elements
A method of grafting tissue at a tissue site, comprising:
- positioning a plunger at a distal end of an elongate housing having a proximal end and a bore defining a longitudinal axis to place an annular cutting surface in a first diameter, the annular cutting surface defined by a plurality of elongate cutting members extending lengthwise at the distal end of the elongate housing and positioned about the longitudinal axis of the elongate housing, the annular cutting surface adapted to contract from the first diameter to a second diameter that is less than the first diameter thereby defining a tapered profile between the first diameter and the second diameter, the plunger having an external surface slidably disposed in the bore of the elongate housing, and wherein the elongate cutting members are biased against the external surface of the plunger at the distal end of the elongate housing;
- inserting the annular cutting surface longitudinally into a donor tissue source;
- displacing the plunger toward the proximal end of the elongate housing with donor tissue entering the bore of the elongate housing as the annular cutting surface advances into the donor tissue source;
- obtaining a tapered graft tissue having an external taper by contracting the annular cutting surface from the first diameter to the second diameter along the tapered profile as the plunger is displaced;
- reaming a tapered socket in the tissue site for receiving the tapered graft tissue, the tapered socket defining an internal taper that substantially corresponds to the external taper of the tapered graft tissue;
- and
- inserting the tapered graft tissue into the tapered socket.
4 more elements
Dependencies are inferred from the claim text.