Tissue harvesting
The present disclosure relates to a tissue collection apparatus including a housing defining an inlet and an outlet and a tissue scaffold suitable for disposal within the housing, the tissue scaffold configured to be loaded with the tissue under the application of an aspiration force applied through the tissue collection apparatus.
1. A method of obtaining cut tissue in an animal comprising:
using a cutting device to cut tissue in a body;
aspirating with an aspiration force the cut tissue through an aspiration lumen;
fluidly connecting an inner portion of the cutting device to a tissue collection chamber, the chamber defined by a two sided wall having a first side facing toward an interior area of the tissue collection chamber and a second side facing the exterior of the chamber;
moving the cut tissue into the tissue collection chamber by the aspiration force; and
loading the cut tissue into a permeable implantable tissue collection scaffold located within the interior area of the chamber in fixed contact for the duration of the loading with the first side of the two sided wall;
wherein the tissue collection scaffold comprises a first region exposed to the cut tissue in the interior area of the tissue collection chamber and a second region protected by a sleeve from exposure to the cut tissue in the interior area of the collection chamber, and wherein loading the tissue collection scaffold comprises loading the cut tissue into the first region and not in the second region of the tissue collection scaffold; and,
wherein the first region is bonded to the second region at an intersection between the first region and the second region that is configured to minimize flow of the cut tissue through the intersection between the first region and the second region.
2. The method of claim 1 , further comprising passing the cut tissue through a filter prior to the step of loading the tissue scaffold.
3. The method of claim 1 , further comprising removing the tissue scaffold from the tissue collection device.
4. The method of claim 1 , wherein the cut tissue is synovial or adipose tissue.
5. The method of claim 1 , wherein the loading step includes loading the tissue scaffold with cut tissue solely under the application of an aspiration force applied through the tissue collection device to the aspiration lumen of the cutter to aspirate tissue therethrough.
6. The method of claim 1 , further comprising piercing the tissue collection scaffold to form a set of fluid-flow pathways in the tissue scaffold.
7. The method of claim 1 , wherein the tissue scaffold includes a first material forming a cartilage region and a second material forming a bone region of the tissue scaffold, and wherein the tissue fragments are loaded into the cartilage region.
8. The method of claim 1 , wherein the tissue scaffold comprises an osteochondral plug.
9. The method of claim 1 , wherein the tissue collection scaffold comprises a bonding agent between the first region and the second region.
10. The method of claim 9 , wherein the bonding agent reduces fluid flow between the first region and the second region.
11. The method of claim 1 , wherein the first region has different mechanical and porosity properties than the second region.