A hydrocollator is a therapeutic device used to provide moist heat treatment through specially designed heat packs. It is widely used by physical therapists, athletic trainers, and healthcare practitioners in clinics, rehab centers, and sports facilities.
How It Works
Whether stationary or mobile, a hydrocollator uses an immersion heating tank to raise water to therapeutic temperatures of around 160°F (71°C). A hydraulic capillary thermostat monitors and maintains consistent heating, while the stainless steel, insulated tank ensures durability, energy efficiency, and safety. Tanks typically hold at least four packs, ensuring a ready supply for patients.
The packs are made of bentonite, a mineral that retains heat for up to 30 minutes. They come in various sizes to wrap around the neck, shoulders, knees, elbows, or smaller joints. Packs are removed with tongs, drained, and wrapped in three to five layers of towels or a cover to prevent direct contact with the skin. Treatment lasts 15–30 minutes.
New packs need at least 20 minutes of soaking before use. Packs should remain stored in the hydrocollator after treatment, and should never be allowed to dry out or heated in a microwave. For optimum sanitation, hydrocollators should be drained and cleaned every two weeks, and water should always be drained before moving the unit to prevent burns.
When They Are Used
Hydrocollators are used to provide moist, penetrating heat to muscles and joints. This helps relieve pain, reduce stiffness, and improve circulation. Conditions that benefit include arthritis, lower back pain, TMJ, neck spasms, migraines, chronic overuse injuries, and children’s myofascial pain. The packs are typically applied before physical therapy to maximize passive and active motion, with heating effects lasting up to an hour post-treatment.
Precautions: Hydrocollator packs should not be used during the acute phase of an injury, for patients with impaired temperature sensation (e.g., diabetic neuropathy), circulation problems (e.g., DVT), infections, or malignant tumors.
Where They Are Used
Hydrocollators are commonly utilized by sports trainers, kinesiologists, physical therapists, and other healthcare practitioners in physical therapy clinics, rehabilitation centers, athletic training facilities, and chiropractic offices.
