Adhesive coated stent and insertion instrument
View Patent ↗A deployment cartridge is provided to insert a coated stent into a junction formed between two tubular tissue sections. The deployment cartridge includes a pusher and a coated stent contained within the pusher. The pusher includes support structure for engagement with the stent. The stent is coated with a tissue sealant or tissue adhesive. An insertion instrument is also disclosed for advancing the deployment cartridge into the junction formed between the two tubular tissue sections. There is also disclosed a method of facilitating the support and healing at a juncture formed between tubular tissue sections with a coated stent.
1. An insertion instrument for positioning a stent at an anastomotic site in the intestine of a patient, comprising:
an annular surgical stapling device, having an anvil member and a tubular member, the anvil member having a cap and a shaft, the tubular member terminating in a head portion carrying a plurality of surgical staples individually disposed in a plurality of staple pockets arranged in an annular configuration, the anvil member shaft being connectable to the tubular member radially inwardly of the surgical staples, the head portion having a recess therein;
an inner ring of staple pockets disposed radially inwardly of the recess; and
a stent disposed in the recess of the head portion, radially inwardly of, and separate from, the surgical staples, wherein the stent includes an outer coating that is configured for non-mechanical fixation to the intestine of the patient.
2. The instrument according to claim 1 , comprising a deployment cartridge having a pusher for retaining the stent in the recess of the head portion.
3. The instrument according to claim 2 , wherein the deployment cartridge includes at least one support member for supporting the stent.
4. The instrument according to claim 2 , wherein the deployment cartridge includes a sharp edge.
5. The instrument according to claim 2 , wherein the deployment cartridge is a generally tubular cartridge.
6. The instrument according to claim 1 , wherein the stent comprises a mesh having a generally tubular structure.
7. The instrument according to claim 6 , wherein the stent has an adhesive material disposed as the outer coating on an outer surface thereof.
8. The instrument according to claim 1 , wherein the annular stapling device further includes an outer ring of anvil pockets and an inner ring of anvil pockets disposed radially outwardly and inwardly of an abutment surface.
9. The instrument according to claim 1 , wherein the stent includes a centrally weakened area.
10. The instrument according to claim 1 , wherein the stent includes an inwardly directed circumferential recess.
11. The instrument according to claim 1 , wherein the stent is wholly disposed within the recess.
12. The instrument according to claim 1 , wherein the surgical staples and the stent are separately driveable from the head portion of the tubular member.