Multichannel Cannula for Bone Substance Delivery
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Solution Overview
Problem
Current methods for delivering substances to fractured bones are imprecise and cause additional trauma, as they often require drilling separate holes or lack fracture stabilization, limiting accessibility and accuracy.
Innovation Solution
A multichannel cannula system that stabilizes the bone with a wire and uses a first channel to receive the wire, allowing for substance delivery or removal through a second channel with inlet and exit portals, enabling precise delivery and removal without additional bone trauma.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a separate hole is drilled in the bone for substance delivery after implant placement, then substance delivery is enabled, but additional bone trauma occurs and accessibility to the intended delivery location is limited
Solution Approach 1:
The implant is designed with multiple functions: it provides mechanical stabilization through threads and structure, and simultaneously serves as a substance delivery device through integrated channels. The channels allow delivery of substances directly through the implant body to the fracture site, eliminating the need for separate delivery holes and reducing additional bone trauma.
2Measurement precision
If substance is delivered through the implant, then precise delivery to fracture site is achieved, but the implant requires fenestrations or slots that may compromise structural integrity
Solution Approach 1:
The implant is divided into multiple functional segments including threads for stabilization, a body with integrated channels for substance delivery, and a head portion. The channels are strategically positioned within the implant structure to enable precise substance delivery to the fracture site while maintaining overall structural integrity through proper distribution of material.
3Ease of manufacture
If substance is delivered into a drilled hole without fracture stabilization, then delivery is possible, but imprecision in delivering substance to intended location occurs
Solution Approach 1:
Fracture stabilization is performed first by implanting the stabilized implant into the bone, which precisely positions the implant at the fracture site. Then substance delivery is performed through the channels in the implant, ensuring accurate delivery to the intended location. This sequence of preliminary stabilization followed by delivery eliminates the imprecision that would occur if delivery were attempted before stabilization.
Data Source
AI summary
A method for delivering a substance to bone includes placing a stabilizing wire in a bone, creating a hole in the bone around the stabilizing wire, and providing a multichannel cannula. The multichannel cannula includes a first channel having an open proximal end and distal end, the first channel being configured to receive the stabilizing wire, and a second channel having an inlet portal and an exit portal that are in fluid communication. The cannula further includes a cap having a delivery port in fluid communication with the inlet portal and a channel for receiving the cannula therein, and a distal tip. The method further includes inserting the multichannel cannula into the hole in the bone such that the first channel receives the stabilizing wire, and delivering the substance into the bone by introducing the substance into the second channel such that the substance exits through the exit portal.