Apparatus for applying wound treatment material using tissue-penetrating needles
View Patent ↗A surgical apparatus is provided including a disposable loading unit selectively operatively engagable within a distal end of a first half-section; and a wound treatment material applicator assembly for delivering wound treatment material to the target surgical site. The disposable loading unit includes a cartridge; a plurality of deployable needles supported within the cartridge, wherein each needle includes a lumen extending therethrough and at least one hole formed in an outer periphery thereof; and an actuation member translatably disposed within the cartridge for delivering a driving force to each needle to deploy the needles from the cartridge. The applicator assembly includes a first and second reservoir supported on the distal end of a respective first and second half-section; and a source of wound treatment material in fluid communication with each reservoir.
1. A surgical apparatus, comprising:
a first section and a second section pivotably mounted in relation to the first section for clamping tissue therebetween;
a cartridge disposed in the second section and having a proximal end and a distal end, the cartridge having a plurality of deployable needles supported within the cartridge, wherein each needle includes a lumen extending therethrough for dispensing a fluid;
a plurality of pushers disposed in the cartridge, each of the pushers being in operative association with at least one of the needles, wherein the pushers sequentially deploy the needles from the cartridge and into tissue clamped between the first section and the second section upon a firing of the surgical apparatus;
a reservoir defined in the second section adjacent the pushers of the cartridge, the reservoir containing the fluid; and
a pressurized canister in fluid communication with the reservoir.
2. The surgical apparatus according to claim 1 , wherein the canister is supported on the second section.
3. The surgical apparatus according to claim 1 , wherein each pusher includes an opening formed therein allowing the fluid to pass from the reservoir to the respective needle.
4. The surgical apparatus according to claim 1 , further comprising an actuation member disposed within the cartridge for translation from the proximal end to the distal end of the cartridge thereby delivering a driving force to each pusher to sequentially deploy the needles from the cartridge.
5. The surgical apparatus according to claim 4 , wherein the actuation member comprises a cam roller that translates through the cartridge to interact with the pushers.
6. The surgical apparatus according to claim 4 , further comprising a knife blade supported on the actuation member for severing tissue clamped between the first section and the second section, the knife blade traveling along a longitudinal slot provided in the cartridge.
7. The surgical apparatus according to claim 6 , wherein a first portion of the needles are disposed on one side of the longitudinal slot and at least a second portion of the needles are disposed on the other side of the longitudinal slot.
8. The surgical apparatus according to claim 1 , wherein the fluid is a wound treatment material.
9. The surgical apparatus according to claim 8 , wherein the wound treatment material is at least one of an adhesive, a sealant, a hemostat, and a medicament.
10. The surgical apparatus according to claim 1 , wherein the first section has a plate including a plurality of needle receiving openings.
11. The surgical apparatus according to claim 10 , wherein a distal end of each needle enters a respective needle receiving opening of the first section during actuation of the surgical apparatus.
12. The surgical apparatus according to claim 1 , wherein the first section has a first section reservoir, a plurality of needles, and a plurality of pushers, the first section reservoir being in fluid communication with lumens extending through the needles of the first section.