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PAYER International Technologies GmbH

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PAYER International Technologies GmbHCase Study: Arterial Blood Collection Vessels

Case Study: Arterial Blood Collection Vessels

Whole blood samples are taken from patients using arterial blood collection vessels. The sample is then evaluated either directly or after brief intermediate storage on the blood gas analyzer. A manufacturer of pharmaceutical and diagnostic equipment already had a product in use, however it had some disadvantages. Therefore, this company was looking for a new concept for the blood collection sample vessel and started a cooperation with us.

The manufacturing of the product implied a number of challenges:

  • The product, consisting of five components, generated high production costs.
  • Due to the use of glass capillaries, there was a risk of infection in the event of glass breakage.
  • Many sealing points in the system carried the risk of blood leaking in the event of a malfunction
  • Lack of transparency in the front part of the collection system made it difficult for the physician or MTA to check whether blood is rising during collection and thus whether it is being done successfully.

Once the analysis of the potential for improvement had been completed, a new concept was developed. The aim was to meet the system requirements and at the same time to achieve cost advantages in the manufacturing of the new system. Many years of know-how in the optimization of systems and a high level of competence in the fields of development, tool making and plastics technology, enabled us to develop a significantly improved concept.

The main advantage of the new, improved blood collection system, which consists of only three parts, is the use of a heparinized plastic capillary, which replaces the two glass capillaries and the vulnerable sealing points of the old system.

For this purpose, we used a special bending process that allows the processing of commercially available straight capillaries. The thermal energy required for bending is introduced by means of conduction and thermal radiation (infrared). This ensures that the critical heparin decomposition temperature of slightly less than 50°C on the inside of the capillary is not exceeded at any point during the process. This bending process also results in a sufficient cross-section in the bending radius so that the blood can flow through unhindered without external support.

The function of this special bending process was successfully verified by a prototype system and this was followed by the award of the entire project from development to series production to PAYER.

An additional step towards improvement was achieved by switching to a housing that is fully transparent. This ensures the best possible monitoring by the person taking the blood sample from the very first moment. A polypropylene suitable for medical applications was used, which enables a highly transparent housing design at low cost thanks to a special mold and process design.

We are pleased that we have been successfully implementing this product for over 10 years now and that we will continue to manufacture the product in the future.

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