Particulate Evacuation Under NPWT: Bench Evaluation of a Multilayer Foam Prototype Versus Commercial Dressings in a Simulated Exudate Model.
Negative pressure wound therapy (NPWT) is widely used to facilitate healing by improving local perfusion, reducing edema and controlling exudate. The porous foam dressing is central to NPWT effectiveness, however, its performance in viscous, particle‐rich exudates remains challenging. Standard indus...
| Published in: | International Wound Journal Vol. 23; no. 3; pp. 1 - 9 |
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| Main Authors: | , , , , , , , |
| Format: | pictorial research tables/charts Journal Article |
| Published: |
Wiley-Blackwell
Mar2026
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=192434976&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 192434976 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 17424801 1725 jtl: International Wound Journal issn: 17424801 maglogo: Y pubinfo: dt: Mar2026 vid: 23 iid: 3 pid: 480 pub: Wiley-Blackwell place: Malden, Massachusetts artinfo: ui: 192434976 192434976 192434976 10.1111/iwj.70872 192434976 ppf: 1 ppct: 8 formats: tig: atl: Particulate Evacuation Under NPWT: Bench Evaluation of a Multilayer Foam Prototype Versus Commercial Dressings in a Simulated Exudate Model. aug: au: Zorrilla de la Fuente, Patricia Castillo, Federico Diban, Nazely Lázaro‐Martínez, José Luis Quevedo Revilla, Fernando García Ruiz, Gerardo Sancibrian, Ramón Peralta, Galo affil: Instituto de Investigación Sanitaria Valdecilla (IDIVAL), Santander, Spain sug: subj: Simulations Exudates and Transudates Negative Pressure Wound Therapy Wound Healing Equipment Design Bandages and Dressings Foam Dressings Product Evaluation In Vitro Studies Comparative Studies Wound Care Methods Descriptive Statistics Wound Infection Prevention and Control Funding Source ab: Negative pressure wound therapy (NPWT) is widely used to facilitate healing by improving local perfusion, reducing edema and controlling exudate. The porous foam dressing is central to NPWT effectiveness, however, its performance in viscous, particle‐rich exudates remains challenging. Standard industry tests often rely on protein‐free aqueous solutions, which overlook the complex rheology and particulate load of real wounds. This study reports a bench evaluation of a multilayer foam prototype compared with three commercial dressings under NPWT, using a simulated viscous exudate with suspended particles. We recorded 60‐min drainage curves and quantified effluent turbidity as a simple, interpretable proxy for particulate transport, summarised as percentage of input turbidity recovered. The mass‐based endpoint (percent solid matter recovered) showed the same ranking as turbidity. At −75 mmHg, the prototype recovered 31.6% of input turbidity, exceeding commercial foams (≤ 9.7%). At −125 mmHg, particulate recovery decreased across all dressings (≤ 9.1%). A matrix‐only control indicated that commercial effluents, particularly at −75 mmHg, clustered near background level, whereas the prototype evacuated substantially more particulate while maintaining robust fluid drainage. These findings suggest that moderate negative pressure and multilayer architecture can help preserve channel patency and reduce clogging in complex exudates. We highlight the need for test methodologies that incorporate viscosity and particulate content, and for practical guidance that links dressing architecture and pressure settings to exudate characteristics. Prospective validation, including larger‐sample confirmation, particle‐size distributions and ultimately clinical endpoints, is warranted. Summary: Clinical selection of NPWT pressure and dressing should reflect exudate properties, and industrial standards should measure viscosity and particulate load instead of using protein‐free aqueous surrogates to ensure accurate, clinically relevant testing.This study evaluates a multilayer foam prototype against three commercial dressings under NPWT, using an innovative simulated viscous exudate with suspended particles to characterise drainage behaviour via time‐volume curves and a simple, interpretable endpoint (percent of input turbidity recovered; confirmed by percent solid matter recovered).Findings show that particulate evacuation depends on pressure and dressing architecture: at −75 mmHg the prototype evacuates substantially more particulate (31.6%) than commercial foams (≤ 9.7%), whereas at −125 mmHg particulate recovery decreases across all dressings (≤ 9.1%), consistent with compression‐induced pore narrowing and filter‐cake formation that limit particle transport. pubtype: Academic Journal doctype: pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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