US 10,973,534 B2Granted

Tissue trap for chondral autograft transfer system

AssigneeSmith & Nephew, Inc.

InventorLily Jeng

Life of this patent

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Abstract

A cartilage repair technique employs a cutter-tissue trap combination device to harvest cartilage tissue from a low-weight-bearing site of a subject. Cut tissue is aspirated though a lumen (1101) of a tissue cutter (1100). The lumen includes an outer shaft (1106) having a first distal window and an inner shaft having a second distal window. Edges of the first distal window and the second distal window cooperate to provide a cutting action there-between upon rotation of the inner shaft within the outer shaft. A tissue trap (1400) coupled to the tissue cutter is configured to collect tissue shavings of a desired size to efficiently deliver the collected shavings to a repair site during surgery. The tissue trap includes a filter (1502) in a housing configured between a removable inflow chamber (1404) and a removable outflow chamber (1406).

Claims7

Dependent claims

A system for tissue collection, comprising:

a handpiece having a proximal end, a distal end, and a longitudinal axis extending therebetween;
a tubular member coupled to the distal end of the handpiece configured for aspirating tissue;
a tissue collection device coupled to the handpiece by a flexible tube extending from the handpiece such that the tissue collection device is spaced apart from the handpiece and no portion of the tissue collection device extends along the longitudinal axis into the flexible tube, the tissue collection device comprising:
a central housing portion comprising an inflow end, an outflow end, and a lumen located between the inflow end and the outflow end;
and
a filter coupled to the lumen, the filter having pores sized for retaining cut tissue fragments having at least a predetermined size;
an inflow chamber at the inflow end of the central housing portion;
an outflow chamber at the outflow end of the central housing portion;
and
a plunger having a geometry configured for matching the lumen and shifting a position of the cut tissue fragments.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/761,660Filed 21 Nov 2016 · us provisional application
Priority: 25 Nov 2015
Published: US 2018/0344327 A16 Dec 2018
Granted: 13 Apr 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

A61B 17/1659
Instruments for performing osteoclasis; Drills or chisels for bones; Trepans: surgical rasps, files, planes, or scrapers
A61B 10/025
Pointed or sharp biopsy instruments: for taking bone, bone marrow or cartilage samples
A61B 17/1635
Instruments for performing osteoclasis; Drills or chisels for bones; Trepans: for grafts, harvesting or transplants
A61M 1/79
Suction drainage systems: filters for solid matter

Family

Application62/259,945Us provisional application · filed 25 Nov 2015
Application62/325,083Us provisional application · filed 20 Apr 2016
Application62/328,148Us provisional application · filed 27 Apr 2016
US 2018/0344327 A1Pre-grant publication · published 6 Dec 2018
US 10,973,534 B2This patent

From the US filing history. Foreign family members aren’t listed.