The Essenz™ Heart-Lung Machine (HLM) has been developed by LivaNova, a UK-based medical device company, to support open-heart surgery procedures in both adult and paediatric patients.
The next-generation Essenz HLM with embedded Essenz™ Patient Monitor forms the state-of-the-art Essenz™ Perfusion System for safe cardiopulmonary bypass management. It offers a personalised perfusion approach and accurate sensing technology for data-driven decision-making by clinicians.
In February 2023, LivaNova initiated a limited commercial release of the system in select centres across Europe after experiencing its clinical benefits in two major locations, Catharina Hospital in Eindhoven, Netherlands; and San Donato Hospital in Milan, Italy.
The system received 510(k) clearance from the US Food and Drug Administration (FDA) in March 2023.
Essenz HLM has also received approval from Health Canada and the Japanese Pharmaceuticals and Medical Devices Agency.
LivaNova’s Essenz HLM design and features
Built on LivaNova’s proven S5™ HLM, the Essenz system improves both clinical workflows and patient care quality during cardiopulmonary bypass procedures.
The system consists of several components, including a blood pump, an oxygenator, a heat exchanger and a reservoir.
The pumps of the system are mounted on a mast, which, together with sensing technology, enables perfusionists in the operating room to deliver patient-tailored perfusion therapies. The mast-mounted pumps allow for optimisation of the position of disposables such as the oxygenator and perfusion tubing set, which reduces priming volumes and thus minimises haemodilution.
The mast-mounted design and advanced cable management provide an ergonomic design to the Essenz Perfusion System, minimising distractions and enabling easy cleaning.
Each pump on the system is independently controlled by a separate knob to simplify operations. The Essenz HLM cockpit provides one central view and control for minimal distractions. The cockpit and the Patient Monitor are connected but operate separately for improved reliability.
The system includes multiple features to prevent the formation of air bubbles and other potential sources of emboli from entering the patient’s bloodstream, with the help of sensor-based bubble detectors, reducing the risk of stroke and other complications.
The system is compatible with a variety of cannula sizes and configurations, making it easy to customise for each patient’s unique anatomy. The device includes a variety of safety features and alarms to help ensure appropriate levels of oxygen and blood flow to the patient and to alert the perfusionist in an emergency or if deviations from the desired perfusion parameters occur. HLM automated sensor checks confirm readiness before the beginning of the cardiopulmonary bypass procedure.
The system is capable of accommodating future software features and functionalities.
Essenz Patient Monitor features
The Essenz Patient Monitor has an intuitive graphical user interface with a soothing background and white numbers to enhance visibility. The patient parameters are continuously recorded on the Essenz Patient Monitor during a procedure, which enhances traceability and supports the perfusionist during and after the cardiopulmonary bypass.
The monitor also features state-of-the-art software architecture, which complies with the latest medical device standards. It includes intra-operative quality indicator thresholds and goal-directed perfusion (GDP) modules to allow for individualised patient management strategy, improving its adaptability to the distinct requirements of patients, workflows and users. GDP is a set of parameters monitored during cardiopulmonary bypass procedures to optimise perfusion, targeting a reduction in mortality risk and postoperative complications.
The Patient Monitor can be seamlessly integrated with operating room external devices and electronic medical record systems, complying with the latest cybersecurity requirements to safeguard patient data integrity and quality.‘
S5 Heart-Lung Machine functioning
During open-heart surgery, the surgeon stops the patient’s heart and it can no longer pump blood to the body’s tissues. To keep the patient alive during the procedure, the S5 heart-lung machine takes over the functions of the heart and lungs.
The S5 HLM is controlled by a perfusionist, who monitors the patient’s vital signs and adjusts the machine as needed to ensure that the patient remains stable throughout the surgery.