Sustained acoustic medicine increases local circulation with a diclofenac delivery patch: a randomized placebo controlled study
BackgroundSustained Acoustic Medicine (SAM) is a non-invasive long-term wearable device that delivers localized long duration high-frequency continuous ultrasound. SAM's biomechanical and diathermic stimuli enhance local circulation and oxygenation, accelerate tissue healing, and alleviate pain...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2025-07-01
|
| Series: | Frontiers in Medical Technology |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fmedt.2025.1552294/full |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849426037966897152 |
|---|---|
| author | Anthony Scanzuso Tabitha Hendren Mia Egmont Julia Zarkar Michael Roberge |
| author_facet | Anthony Scanzuso Tabitha Hendren Mia Egmont Julia Zarkar Michael Roberge |
| author_sort | Anthony Scanzuso |
| collection | DOAJ |
| description | BackgroundSustained Acoustic Medicine (SAM) is a non-invasive long-term wearable device that delivers localized long duration high-frequency continuous ultrasound. SAM's biomechanical and diathermic stimuli enhance local circulation and oxygenation, accelerate tissue healing, and alleviate pain. The sonophoresis effects of SAM further improve transdermal drug delivery. Diclofenac is a topical Nonsteroidal anti-inflammatory drug for treating localized musculoskeletal (MSK) pain. Its efficacy is significantly dependent on skin porosity. This study aims to determine the diathermic effects of SAM and diclofenac on localized blood circulation.MethodsSixty-four healthy participants were randomly assigned to four groups (Active SAM group: n = 32, Placebo SAM group: n = 32): (A) Coupling gel + placebo SAM), (B) Coupling gel + active SAM, (C) 2.5% Diclofenac gel + placebo SAM, and (D) 2.5% Diclofenac gel + active SAM. Both forearms were treated with a placebo and active SAM devices for 1 h. The blood flux (perfusion units, PU) and temperature (degrees centigrade) change were recorded at 10 min intervals for 60 min using high-laser-power Doppler flowmetry. Blood circulation and temperature were recorded and reported (Clinical trial Identifier: NCT06510062).ResultsSAM increased blood flow significantly over 60 min by 19.2 PU (p < 0.0001) with coupling patch and 18.6 PU with 2.5% diclofenac patch (p < 0.0001) vs. placebo. Surface level tissue temperature increased by Δ2.4°C (p < 0.0001) with gel coupling patch and Δ2.2°C (p < 0.0001) with 2.5% diclofenac patch vs. placebo ultrasound treatment (p < 0.0001). There was no significant difference between standard coupling ultrasound gel and 2.5% diclofenac gel in blood flow and temperature. SAM provided a significant temperature increase at 20 min and a circulation increase at 10 min, which remained for the duration of the 60 min. All participants completed the study with no adverse events.ConclusionSAM treatment significantly increases local blood circulation after 10 min, increases temperature after 20 min, and sustains the effects of SAM's stimulation. The 2.5% diclofenac gel does not affect SAM's biological effects to increase local circulation. The study concludes that the application of diclofenac does not affect the diathermic properties of SAM exposure while enhancing the efficacy of diclofenac delivery through sonophoresis.Clinical Trial Registrationidentifier NCT06510062. |
| format | Article |
| id | doaj-art-e111c7a37e8345a7a22f5e3e12175d0e |
| institution | Kabale University |
| issn | 2673-3129 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Medical Technology |
| spelling | doaj-art-e111c7a37e8345a7a22f5e3e12175d0e2025-08-20T03:29:34ZengFrontiers Media S.A.Frontiers in Medical Technology2673-31292025-07-01710.3389/fmedt.2025.15522941552294Sustained acoustic medicine increases local circulation with a diclofenac delivery patch: a randomized placebo controlled studyAnthony Scanzuso0Tabitha Hendren1Mia Egmont2Julia Zarkar3Michael Roberge4Department of Biomedical Engineering, ZetrOZ Systems, LLC, Trumbull, CT, United StatesDepartment of Biomedical Engineering, ZetrOZ Systems, LLC, Trumbull, CT, United StatesDepartment of Biopsychology, The University of California, Santa Barbara, CA, United StatesDepartment of Biomedical Engineering, The University of Connecticut, Storrs, CT, United StatesDepartment of Pharmacy, Compound Solutions, Inc., Monroe, CT, United StatesBackgroundSustained Acoustic Medicine (SAM) is a non-invasive long-term wearable device that delivers localized long duration high-frequency continuous ultrasound. SAM's biomechanical and diathermic stimuli enhance local circulation and oxygenation, accelerate tissue healing, and alleviate pain. The sonophoresis effects of SAM further improve transdermal drug delivery. Diclofenac is a topical Nonsteroidal anti-inflammatory drug for treating localized musculoskeletal (MSK) pain. Its efficacy is significantly dependent on skin porosity. This study aims to determine the diathermic effects of SAM and diclofenac on localized blood circulation.MethodsSixty-four healthy participants were randomly assigned to four groups (Active SAM group: n = 32, Placebo SAM group: n = 32): (A) Coupling gel + placebo SAM), (B) Coupling gel + active SAM, (C) 2.5% Diclofenac gel + placebo SAM, and (D) 2.5% Diclofenac gel + active SAM. Both forearms were treated with a placebo and active SAM devices for 1 h. The blood flux (perfusion units, PU) and temperature (degrees centigrade) change were recorded at 10 min intervals for 60 min using high-laser-power Doppler flowmetry. Blood circulation and temperature were recorded and reported (Clinical trial Identifier: NCT06510062).ResultsSAM increased blood flow significantly over 60 min by 19.2 PU (p < 0.0001) with coupling patch and 18.6 PU with 2.5% diclofenac patch (p < 0.0001) vs. placebo. Surface level tissue temperature increased by Δ2.4°C (p < 0.0001) with gel coupling patch and Δ2.2°C (p < 0.0001) with 2.5% diclofenac patch vs. placebo ultrasound treatment (p < 0.0001). There was no significant difference between standard coupling ultrasound gel and 2.5% diclofenac gel in blood flow and temperature. SAM provided a significant temperature increase at 20 min and a circulation increase at 10 min, which remained for the duration of the 60 min. All participants completed the study with no adverse events.ConclusionSAM treatment significantly increases local blood circulation after 10 min, increases temperature after 20 min, and sustains the effects of SAM's stimulation. The 2.5% diclofenac gel does not affect SAM's biological effects to increase local circulation. The study concludes that the application of diclofenac does not affect the diathermic properties of SAM exposure while enhancing the efficacy of diclofenac delivery through sonophoresis.Clinical Trial Registrationidentifier NCT06510062.https://www.frontiersin.org/articles/10.3389/fmedt.2025.1552294/fullsustained acoustic medicinediathermydiclofenacLaser Doppler Flowmetryblood circulationtransdermal drug delivery |
| spellingShingle | Anthony Scanzuso Tabitha Hendren Mia Egmont Julia Zarkar Michael Roberge Sustained acoustic medicine increases local circulation with a diclofenac delivery patch: a randomized placebo controlled study Frontiers in Medical Technology sustained acoustic medicine diathermy diclofenac Laser Doppler Flowmetry blood circulation transdermal drug delivery |
| title | Sustained acoustic medicine increases local circulation with a diclofenac delivery patch: a randomized placebo controlled study |
| title_full | Sustained acoustic medicine increases local circulation with a diclofenac delivery patch: a randomized placebo controlled study |
| title_fullStr | Sustained acoustic medicine increases local circulation with a diclofenac delivery patch: a randomized placebo controlled study |
| title_full_unstemmed | Sustained acoustic medicine increases local circulation with a diclofenac delivery patch: a randomized placebo controlled study |
| title_short | Sustained acoustic medicine increases local circulation with a diclofenac delivery patch: a randomized placebo controlled study |
| title_sort | sustained acoustic medicine increases local circulation with a diclofenac delivery patch a randomized placebo controlled study |
| topic | sustained acoustic medicine diathermy diclofenac Laser Doppler Flowmetry blood circulation transdermal drug delivery |
| url | https://www.frontiersin.org/articles/10.3389/fmedt.2025.1552294/full |
| work_keys_str_mv | AT anthonyscanzuso sustainedacousticmedicineincreaseslocalcirculationwithadiclofenacdeliverypatcharandomizedplacebocontrolledstudy AT tabithahendren sustainedacousticmedicineincreaseslocalcirculationwithadiclofenacdeliverypatcharandomizedplacebocontrolledstudy AT miaegmont sustainedacousticmedicineincreaseslocalcirculationwithadiclofenacdeliverypatcharandomizedplacebocontrolledstudy AT juliazarkar sustainedacousticmedicineincreaseslocalcirculationwithadiclofenacdeliverypatcharandomizedplacebocontrolledstudy AT michaelroberge sustainedacousticmedicineincreaseslocalcirculationwithadiclofenacdeliverypatcharandomizedplacebocontrolledstudy |