Many health disorders are caused by the circulation of harmful substances in the blood. Modern methods of removing some of these substances from a patient’s bloodstream are severely limited: they are expensive, require long treatment times and are non-specific, removing “good” components alongside “bad” ones. Pharmaceutical approaches aimed at blocking or destroying harmful substances in blood have similar limitations, as well as toxic side-effects.

Our Solution

The MediSieve System with the MediSieve Filter and Magnet as principal components can selectively remove these substances from the bloodstream by continuously circulating a patient’s blood through the system, similarly to dialysis. The technology uses targeted magnetic particles, which bind specifically to the targets in the bloodstream that doctors want to remove. The MediSieve Filter captures the particles and the targets bound to them, preventing them from flowing back into the body. The magnetic particles are infused directly into the external blood loop and therefore stay outside of the body. Using this method, the MediSieve system can remove a wide variety of different targets with high efficiency and specificity.
Uniquely for Malaria, no infusion of targeted magnetic particles is required due to the magnetic nature of Malaria infected cells. The MediSieve Filter and Magnet can therefore capture Malaria infected cells directly, without the need for magnetic particles.

Unique Approach

Ease of use

  • Our Device is designed to integrate with existing hospital equipment.
  • The procedure can be stopped at any time, so clinicians can choose an optimal target level for the substances in the bloodstream.


  • The system is efficient at high flow rates, enabling the whole procedure to be done in 2-4 hours.
  • Targets are captured with high specificity, so we do not remove any “good” components.

Treatment Personalisation

  • One or several targets can be captured at the same time, enabling treatments to be personalised to different patients.
  • A huge variety of targets can be specifically captured, including cells, toxins, antibodies, and inflammatory cytokines.


  • Captured substances can be recovered post procedure (e.g. for analysis).

Magnetic Blood Filtration

Watch on YouTube

Steps Of The Procedure

  1. The patient is connected to an extracorporeal loop containing the MediSieve devices via the venous access point (peripheral preferred; central possible).
  2. The blood is pumped through the system using standard extracorporeal systems already present in hospitals.
  3. (This step is skipped for Malaria) Targeted magnetic particles are infused into the extracorporeal loop, binding to the target harmful substances in the blood.
  4. The MediSieve Filter, placed with within the MediSieve Magnet, captures the particles and substances bound to them (or the infected cells directly in the case of Malaria) from the patient’s blood.
  5. The filtered blood, free from magnetic particles and harmful substances, flows back into the patient’s body. Throughout the whole procedure the magnetic particles stay outside of the body.
  6. The MediSieve Filter is disposed (captured substances can be recovered if desired); the MediSieve Magnet can be reused.
Job Posting: Conjugation Scientist

Job Posting: Conjugation Scientist
August 18, 2020

Job Title: Conjugation Scientist  Start Date : ASAP  Hours of Work : 37.5 hours per week (full-time)  Salary : £25 - 30k PA  Closing Date : End of September 2020 (or earlier if a suitable candidate is found) Please send your  CV and a cover letter  explaining what you...
Job Posting: Formulation Scientist - Product Development

Job Posting: Formulation Scientist - Product Development
August 04, 2020

Job Title: Formulation Scientist - Product Development Reports to : CTO  Start Date : ASAP  Hours of Work : 37.5 hours per week (full-time)  Salary : £37.5 - 45k PA  Closing Date : September 2020  Please send your  CV and a cover letter  explaining what you can ...