Esempio di applicazione (case study) su un dispositivo medico portatile
La sfida della progettazione
Aqueduct Medical is a leading producer of cooling system therapydevices for post-operative care for facial plastic surgery. Their coolingsystem circulates cooled water through their patented masques andvests to reduce pain, swelling, bruising, and downtime for patients in asafe and controlled manner.
These devices must be portable, light, easy to use, and affordable whilekeeping their cooling and operating temperatures at very specific levelsfor patient comfort and safety.
While creating the prototype for their device, Aqueduct Medicalsought the expertise of Aavid, Thermal division of Boyd Corporation, toaid in designing and optimizing the heat dissipation assembly.
The prototype had very specific design constraints such as to be easy touse and be unobtrusive in a patient's home. It also had to be affordablewhile maintaining proper temperatures to deliver the maximumtherapeutic use.
Noise, weight, power consumption, and cost all needed to be keptcarefully regimented as well as temperature. The industrial design alsohad to conform well to how the prototype worked and operated.
La Soluzione di Aavid
Aavid engineered and optimized the heat dissipation assembly forprototyping. The cooling solution was designed with thermoelectricmodules placed on a cold plate and an active cooling consisting of heatsinks and a fan while complying with the design constraints of:
-Costo di produzione della soluzione di raffreddamento inferiore a $35
-Temperatura ambiente di 28℃
-Rumorosità <40 dBA a 1 m dall'alloggiamento
-Alimentazione <220 W, 12 V DC
-Acqua corrente, acqua distillata o soluzione salina.
-Velocità di flusso target < 0,8 lpm in ingresso in una piastra di raffreddamento a liquido
-Il liquido entra nella piastra di raffreddamento a un massimo di 7℃
-È necessario eliminare 60 W dal liquido in ingresso nella piastra di raffreddamento
During the design and optimization process, the cost for a massproduction version of the cooling solution (heat sink, cold plates) wereestimated.
Aavid managed to keep the cost close to the targeted price, theacoustics below the target, and provide a simple, effective andcompact cooling solution.
Today Aqueduct Medical’s AqueCool Controlled Cooling System™ is themost advanced post-operative recovery system available to plasticsurgical patients and is sold world-wide. Patients find that theirdiscomfort and downtime after surgery is significantly decreased thanksto these systems.