Biotronik SE has been granted a patent for a method of producing a balloon for a balloon catheter. The method involves depositing a polymer coating onto the surface of the balloon using a solution containing a solvent and a polymer. The solvent and polymer are selected to create fibrous particles that undergo a loss of volume during drying and suctioning. GlobalData’s report on Biotronik SE gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Biotronik SE, Neuromodulation implants was a key innovation area identified from patents. Biotronik SE's grant share as of September 2023 was 48%. Grant share is based on the ratio of number of grants to total number of patents.

Method for producing a coated balloon for a catheter

Source: United States Patent and Trademark Office (USPTO). Credit: Biotronik SE & Co KG

A recently granted patent (Publication Number: US11771874B2) describes a method for producing a balloon for a balloon catheter. The method involves providing a balloon with an outer surface and depositing a polymer coating onto the surface using a solution comprising a solvent and a dissolved polymer. The solvent used in the method is trifluoroacetic acid, and the polymer can be an aliphatic or aromatic polyamide, a thermoplastic polymer, a thermoplastic elastomer-modified polymer, or a polyether block amide. The concentration of the polymer in the solution can range from 1 wt. % to 30 wt. %.

The deposition of the polymer coating can be achieved through various techniques, including electrospinning and spraying through a shaped nozzle. In the case of spraying, the viscosity of the solution creates thread-shaped fragments in the spray that are preserved in the gas phase due to solvent loss.

The method also allows for the addition of a drug or a composition containing a drug onto the surface coating of the balloon. Additionally, the balloon can have at least one electrical conductor on its surface prior to the deposition of the polymer, and the generated surface coating embeds the conductor.

This patented method offers a novel approach to producing balloons for balloon catheters. By depositing a polymer coating onto the balloon surface, the method allows for the incorporation of various polymers, including polyamides and thermoplastic elastomers, which can enhance the performance and functionality of the balloon. The use of trifluoroacetic acid as a solvent provides effective deposition of the polymer in gel-like form, which undergoes a loss of volume during drying. The method also offers flexibility in terms of the concentration of the polymer in the solution, allowing for customization based on specific requirements. The ability to add drugs or compositions containing drugs onto the surface coating further expands the potential applications of the balloon catheter. Overall, this patented method presents a promising advancement in the production of balloons for balloon catheters, with potential implications for medical procedures and treatments.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.