US 7,611,473 B2Granted

Tissue extraction and maceration device

AssigneeEthicon, Inc.

InventorsRobert Boock, Nathan S. Cauldwell, Keith M. Orr

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Abstract

Devices and methods are provided for extracting and macerating tissue, and optionally for depositing the tissue onto a tissue scaffold. The device generally includes an outer tube having a substantially open distal end that is adapted to be placed on and preferably to form a seal with a tissue surface, and a shaft rotatably disposed within the outer tube and movable between a first, proximal position in which the shaft is fully disposed within the outer tube, and a second, distal position in which a portion of a distal end of the shaft extends through the opening in the distal end of the outer tube. The device also includes a tissue harvesting tip formed on the distal end of the shaft that is effective to excise a tissue sample when the shaft is moved to the distal position, and a cutting member that is coupled to the shaft at a position proximal to the tissue harvesting tip. The cutting member is effective to macerate a tissue sample excised by the tissue harvesting tip.

Claims31

Dependent claims

A tissue extraction and maceration device, comprising:

an outer tube having a substantially open distal end that is adapted to be placed on a tissue surface;
a shaft rotatably disposed within the outer tube and movable between a first, proximal position in which the shaft is fully disposed within the outer tube, and a second, distal position in which a portion of a distal end of the shaft extends through the substantially open distal end of the outer tube;
a tissue harvesting tip formed on the distal end of the shaft, the tissue harvesting tip being effective to excise a tissue sample;
and
a sizing screen disposed within the outer tube and positioned proximal to the tissue harvesting tip, the sizing screen having openings with a size that prevent passage of excised tissue samples having a size greater than a size of the openings;
and
a cutting member disposed within the outer tube and coupled to the shaft at a position proximal to the tissue harvesting tip and adjacent to the sizing screen such that excised tissue samples prevented from passing through the sizing screen by the openings are macerated by the cutting member to form tissue samples having a size that can pass through the openings.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/661,460Filed 11 Sep 2003
Published: US 2005/0059905 A117 Mar 2005
Granted: 3 Nov 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

A61B 10/025
Pointed or sharp biopsy instruments: for taking bone, bone marrow or cartilage samples
A61B 17/32002
Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes: with continuously rotating, oscillating or reciprocating cutting instruments
A61B 10/0266
Pointed or sharp biopsy instruments: means for severing sample
A61B 10/0283
Pointed or sharp biopsy instruments: with vacuum aspiration, e.g. caused by retractable plunger or by connected syringe

Family

US 2005/0059905 A1Pre-grant publication · published 17 Mar 2005
US 7,611,473 B2This patent

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

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