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Sefar Medical Applications


In healthcare technology quality, reliability and innovation are crucial success factors. Sefar offers a wide range of precision meshes and highly functional membranes for use in medical technology as well as implants or diagnostic devices in patients.

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Fabricated components made of SEFAR MEDIFAB® and SEFAR MEDITEX®

Sefar converts its monofilament filtration products MEDIFAB® and MEDITEX® into a range of component pieces for the healthcare industry. The high precision fabrics are used as filtration, spreading, or drainage media in applications such as perfusion, cardiopulmonary filtration, diagnostics, and biopsies, as well as in eye surgery, air filtration, embolic protection, composite filters for bacteria and viruses (with additional nano-membranes), and fat filtration for cosmetic procedures. In all of these, monofilament fabrics provide the best results, reducing risks for patients and protecting them from the risk of an emboli or cerebral damage.

 

Sefar Medical Product Lines


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Technology Service

A global team of Sefar experts supports the R & D departments of customers worldwide.
Sefar has the experience, know-how and corresponding production capabilities for a wide range of materials (PET, PA, PP and PEEK). Efficient development of innovative and sustainable solutions – like pleated elements for an efficient filtration surface, laser-cut fabric parts for precision instruments or ultrasonic-welded shapes.

Laboratory Service

Well-trained staff and high level equipment enable flawless testing:

slurry and particle analyses

filter media comparison

filter media analysis and recommendation

microscopy analysis

pore size and pore size distribution

tensile strength, abrasion

chemical material analysis

compatibility tests

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Applications

Invasive Implants

SEFAR MEDIFAB® is a woven precision fabric based on synthetic yarn and provides all the necessary certificates and evidence for use in the invasive implants sector. The product line is biocompatible and meets the requirements of USP VI. The production processes are monitored according to ISO 13485 to provide safety and minimise customer risk, while the customer benefits from a simpler approval of their products in the medical market, consequently saving them time and money. A team of Sefar experts supports in the development of these high-precision products.

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Microfiltration Membrane

SEFAR MEDITEX® PORE products are characterized by their very small pore size, high airflow and ability to withstand a high head of water. High mechanical resistance together with unsurpassed protection against contamination allows use in a wide range of medical devices.

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Woundcare

The use of fabrics in the advanced wound care management shows clear advantages compared to the conventionally used nonwoven materials. Fabrics have inherently smooth and regular surfaces. The materials are thin (<100 μm) and perfectly transparent. They allow rapid and controlled transfer of exudates. At the same time they do not absorb humidity and maintain a moist wound
environment. The production of most precise mesh openings with defined surface characteristics and within strict biological specifications is a prerequisite for wound care applications.

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Perfusion Filter

All the aspects of form and functionality of SEFAR MEDIFAB® fabric in blood filters are characterized by its unsurpassable filter efficiency, well-defined surface properties and high flexibility. High flow rates, precise mesh sizes and the proven biocompatibility of the Sefar fabrics contribute to the excellent reliability and performance of the safety filters, which include, for example, those used in open heart surgery. Whether used as a cardio filter or in cardio reservoirs, as a pleated filter having a large surface area in arterial filters or as a safety filter in an oxygenator, SEFAR MEDIFAB® guarantees high filtration efficiency and highest quality.

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Infusion Set

SEFAR MEDIFAB® fabric having a mesh aperture of < 20 µm ensures that during an infusion no foreign particles enter the patient’s bloodstream. We offer tapes, tubes and bags. The infusion filters serve as safety filters. The function assures the retention of particles (ISO 8536-4). The source of such particles can be the infusion bottle, infusion bag or infusion solution, for example, aggregated nutrients or pharmaceutical compounds.
SEFAR MEDITEX® membranes are used to ventilate infusion systems (ISO 8536-4). The construction of the membrane guarantees a high air permeability while preventing the ingress of viruses and bacteria as well as the escape of liquids.

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Diagnostics test strips

The SEFAR MEDITEX® line offers a range of solutions for healthcare providers with properties including hydrophilic surfaces (HPL), specific colours (COL), multiple layers (ACC), or structures such as knitted fabrics (KNT), with all functional and biocompatible properties tailored according to the customer’s requirements. SEFAR MEDITEX® has been designed with a homogeneous structure and hydrophilic surface to guarantee a rapid and even distribution, allowing for maximum flexibility in the design of test strips and guaranteeing accurate and reproducible test results.

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Absorption and spreading

Hydrophilic fabric absorbs and spreads 5 µl of water.