Introducer Sheath Stabilizer for Embolic Coil Delivery
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Solution Overview
Problem
The deployment of embolic coils into blood vessels is challenging due to difficulties in inserting the introducer sheath into the catheter hub, leading to premature detachment or jamming, and pre-hydration of coils within the sheath can cause deformation of fibered coils, reducing their effectiveness.
Innovation Solution
An introducer sheath stabilizer with a flexible conical section and slits that securely fits into the catheter hub, allowing for pre-hydration and insertion of embolic coils without removal from the sheath, preventing premature detachment and jamming, and facilitating the transfer of coils into the microcatheter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the introducer sheath is inserted directly into the catheter hub, then the procedure is simpler, but premature detachment or jamming occurs
Solution Approach 1:
The stabilizer acts as an intermediary device between the introducer sheath and the catheter hub. It provides a stable interface that secures the introducer sheath during coil delivery, preventing premature detachment or jamming while maintaining procedural simplicity
2Ease of operation
If the coil is pre-hydrated within the sheath, then lubrication is improved, but fibered coils deform and lose effectiveness
Solution Approach 1:
The device separates the pre-hydration function from the coil structure by providing a dedicated stabilization interface. This allows the coil to be lubricated through the stabilizer without direct manipulation that would cause deformation, maintaining both lubrication benefits and shape integrity
3Reliability
If the introducer sheath is secured firmly in the catheter hub, then coil delivery reliability improves, but insertion complexity increases
Solution Approach 1:
The stabilizer serves as a simple intermediary component that provides reliable securing of the introducer sheath to the catheter hub through a straightforward interface, achieving firm fixation without complicating the insertion procedure
Data Source
AI summary
A device for introducing an embolic coil into a catheter comprises an elongated body defining a longitudinal passage extending therethrough from a first opening at a proximal end thereof to a second opening at a distal end thereof, the elongated body being including a mating portion for conforming to a size and shape of an opening in a hub of a catheter to mate therewith and an embolic coil introducer sheath including a coil receiving lumen extending therethrough, a distal tip of the introducer sheath being dimensioned to be received within a proximal end of the longitudinal passage. Similarly, a method of implanting an embolic coil, comprises inserting a stabilizer into a catheter hub so that a flexible mating portion substantially conforms to a shape of an inner surface of the hub wherein the stabilizer includes a passage extending therethrough from a proximal opening to a distal opening thereof. An introducer sheath including an embolic coil received in a lumen thereof is inserted into the proximal opening of the passage and through the passage to exit the distal opening thereof so that a distal opening of the lumen is positioned substantially adjacent to a proximal opening of a catheter and an embolic coil is advanced out of the distal opening of the lumen into the catheter and deployed in the body through the catheter.