US 12,280,203 B2
Apparatuses and methods for negative pressure wound therapy
Vithushan Jeyakumaran, London (GB)
Assigned to T.J.Smith and Nephew, Limited, Hull (GB)
Appl. No. 17/762,698
Filed by T.J.Smith and Nephew, Limited, Hull (GB)
PCT Filed Oct. 1, 2020, PCT No. PCT/EP2020/077478
§ 371(c)(1), (2) Date Mar. 22, 2022,
PCT Pub. No. WO2021/064085, PCT Pub. Date Apr. 8, 2021.
Claims priority of application No. 1914283 (GB), filed on Oct. 3, 2019.
Prior Publication US 2022/0395630 A1, Dec. 15, 2022
Int. Cl. A61M 1/00 (2006.01)
CPC A61M 1/98 (2021.05) [A61M 1/912 (2021.05)] 19 Claims
OG exemplary drawing
 
1. An apparatus to provide negative pressure to a wound site comprising:
a wound dressing configured to be positioned at a wound site;
a negative pressure source assembly configured to be in fluid communication with the wound dressing, the negative pressure source assembly comprising;
a negative pressure source; and
a canister configured to receive fluid removed from the wound dressing, the canister comprising:
an inlet in fluid communication with the wound dressing;
an outlet in fluid communication with the negative pressure source;
a filter positioned over the outlet;
a shield comprising a plurality of openings and a plurality of protrusions, wherein the plurality of openings are configured to allow air to be drawn from the canister and the plurality of protrusions protrude from a surface of the shield that faces an interior of the canister and extend into the interior of the canister, the plurality of protrusions are configured to protect the filter from components within the interior of the canister, and
wherein the plurality of protrusions are freestanding projections that protrude from a surface of the shield that faces an interior of the canister and the freestanding projections extend into the interior of the canister.