Braided Medical Device Manufacturing with Frangible Inserts
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Summary
Problems
The complexity of braided medical device geometry poses challenges in manufacturing, particularly in placing and removing internal support inserts without causing distortion, deformation, or breaking of wires, which compromises the device's integrity and performance.
Innovation solutions
The use of frangible materials like gypsum for inserts within the braided medical device during the forming process, which can be dissolved or crushed for removal, along with a dual-layer braid structure where the inner layer is stiffer than the outer layer to maintain structural support while minimizing damage to the ventricular septum.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If traditional methods are used to place and remove internal support inserts from braided medical devices, then the device geometry can be formed, but wire distortion, deformation, or breaking occurs compromising device integrity
Why choose this principle:
The patent applies preliminary action by pre-forming the braided structure with inserts in place during the braiding process itself, rather than attempting to insert supports after braiding is complete. This preliminary integration of supports during manufacturing prevents wire distortion and breaking that would occur with post-formation insertion attempts.
Principle concept:
If traditional methods are used to place and remove internal support inserts from braided medical devices, then the device geometry can be formed, but wire distortion, deformation, or breaking occurs compromising device integrity
Why choose this principle:
The patent uses temporary placeholder elements as intermediaries during the braiding process. These placeholders serve as mediators that allow the braiding machinery to form the device geometry without direct contact between the wires and the final support inserts, preventing wire damage while achieving the desired formed structure.
Application Domain
Data Source
AI summary:
The use of frangible materials like gypsum for inserts within the braided medical device during the forming process, which can be dissolved or crushed for removal, along with a dual-layer braid structure where the inner layer is stiffer than the outer layer to maintain structural support while minimizing damage to the ventricular septum.
Abstract
A method for making a braided medical device may involve positioning an insert inside a braided material, processing the braided material to form the braided medical device, dissolving and/or crushing the insert into multiple pieces, and removing the multiple pieces from the braided medical device. In some embodiments, the insert is made of gypsum. A braided medical device for occluding a defect in a heart may include a right disc for residing in a right side of the heart, a left disc having a partially circular shape for residing in a left side of the heart, and a waist extending between the right disc and the left disc and having a smaller diameter than that of either the right disc or the left disc.