Medical | Home Healthcare

Mission critical equipment that control the flow medications, mixing gasses, oxygen or anesthesia require made-to-order soleniod valves

Solenoid valves are vital in many medical and dental devices as well as home healthcare equipment to control the flow of fluids or gases. Applications range from mission critical surgical equipment controlling the flow medications, mixing gasses, oxygen or anesthesia delivery, to simple air pressure hospital beds. Solenoid Solutions designs and builds valves to your exact speficiations.

Infusion Pumps 
Infusion pumps incorporate solenoid valves to regulate the flow rate of medications and fluids, ensuring accurate dosing during intravenous therapy. They play a crucial role in medical devices like infusion pumps to administer fluids, medications, or nutrients to patients in a controlled and precise manner. Here's how they work in infusion pumps.

Solenoid valves control the flow of liquid medications or fluids for hydration in the pump system. They regulate the opening and closing of fluid pathways, allowing for precise control of infusion rates. They operate as an on/off control when the solenoid valve is energized, it opens, allowing the fluid to flow through the pump system. When the it’s de-energized, the valve closes, stopping the flow of fluid. Solenoid valves also enable precise dosing in infusion pumps. By controlling the opening and closing of the fluid pathway, they determine the volume of fluid delivered during each infusion cycle, ensuring accurate and controlled dosing. By adjusting the frequency of the solenoid valve opening and closing, the pump can regulate the flow rate of the fluid being administered to the patient.

Patient safety is a primary concern. Solenoid valves can be designed to automatically close in case of pressure abnormalities, occlusions, or other critical conditions to prevent excessive or unintended fluid delivery.  The materials of the valve must be compatible with a wide range of fluids, including medications and different types of intravenous solutions. They are designed to withstand exposure to various fluids without degradation or contamination, and must  operate reliably over extended periods. These valves undergo stringent testing to ensure durability, consistent performance, and resistance to wear or fatigue, given the frequent usage in medical settings.

Insulin Pumps
Mini or micro solenoid valves operate similarly in insulin pumps to control the delivery of insulin to patients with diabetes. These wearables devices are battery driven and require components to be low power draws to extend battery life. Precision is paramount in these types of micro dosing applications.   

Dialysis Hemodialysis Machines
Solenoid valves help control the flow of blood and dialysate in hemodialysis machines for blood purification in patients with kidney failure. They facilitate the precise control and management of fluid flow during the dialysis process. Here's a general explanation of how solenoid valves work in hemodialysis machines.

Hemodialysis machines incorporate a blood circuit to filter waste products and excess fluids from a patient's blood. Solenoid valves control the flow of blood through various components of the circuit, and allows the blood pump to draw blood from the patient, creating the necessary pressure to propel it through the dialyzer for treatment.

A dialysate circuit removes waste products from the blood. Solenoid valves regulate the flow of dialysate, a solution with specific electrolyte and pH levels, through different sections of the circuit. Similarly, solenoid valves control the flow of water and concentrates in the preparation section of the hemodialysis machine mixing the appropriate amount of each to create the desired solution.  Once prepared, solenoid valves are then responsible for controlling the delivery of dialysate to the dialyzer. They open and close to regulate the flow of dialysate, ensuring precise volumes and maintaining the appropriate concentration during the dialysis process.

Finally, solenoid valves directs the disposal of used dialysate and waste products. By controlling the opening and closing of the valves, the waste is directed to the appropriate disposal system.  Automated hemodialysis machines use additional solenoid valves in the machine's control system, allowing for programmed and precise control of fluid flow rates and timings during the dialysis process.

Hospital Beds and Chairs
Hospital beds and chairs control various functions and movements with solenoid valves. 

Solenoid valves are involved in the height, backrest and leg elevation adjustment mechanisms of hospital beds. When the control button or switch is activated, an electrical signal is sent to the solenoid valve, which actuates to allow hydraulic or pneumatic fluid to flow, raising or lowering the bed's height, back rest and leg position to the desired position.

Solenoid valves enable the Trendelenburg and Reverse Trendelenburg positions in hospital beds. By activating the corresponding control switch, the solenoid valve opens to allow fluid to flow to the appropriate cylinders, adjusting the bed's inclination accordingly.

Hospital beds often include a CPR release feature for emergency situations. When the CPR release button is pressed, a solenoid valve quickly releases any hydraulic or pneumatic pressure, allowing the bed to flatten instantly, facilitating resuscitation efforts.

Solenoid valves can be used to control locking mechanisms in hospital beds. By activating the solenoid valve, the locking mechanism is engaged, ensuring the bed remains securely locked in the desired position to prevent accidental movement. Similarly, solenoid valves can be integrated into the emergency stop feature of hospital beds. When the emergency stop button is pressed, the valve closes, cutting off fluid flow and immediately stopping any ongoing bed movement for safety purposes.

Solenoid valves are used in countless other medical device applications. 

Ventilators
Crucial components in mechanical ventilators, helping control the flow of oxygen and other gases to the patient.

Anesthesia machines
Need to regulate the flow of anesthesia gases, ensuring precise and controlled delivery during surgical procedures.

Blood analyzers
Automated blood analyzers use solenoid valves to direct blood samples to different compartments for testing and analysis.

Laboratory equipment
Examples include instruments, such as chromatography systems, liquid handling systems, and sample analyzers.

Oxygen concentrators
Controlling the flow of oxygen which extract and deliver concentrated oxygen to patients with respiratory conditions.

Dental equipment
Equipment like dental chairs and dental drills use solenoid vlaves to control the flow of water, air, and other fluids used during dental procedures.

Blood pressure monitors
Need to control the flow of air and regulate the pressure during the measurement process.

These are just a few examples of the many applications of solenoid valves in medical devices. Solenoid valves offer precise control, reliability, and ease of integration, making them essential components in various healthcare equipment.

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