Insertion Tool Dissector Mechanism for Subcutaneous Pocket Creation
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Solution Overview
Problem
Existing insertion tools for implanting devices in subcutaneous tissue expose the device during insertion, leading to potential dislocation, damage, and increased trauma to the skin tissue, which can result in bleeding and signal distortion.
Innovation Solution
An improved insertion tool with a cannula that moves between extended and retracted positions, featuring a dissector tip and a rod that forces the device through an opening at the distal end of the cannula as it retracts, ensuring the device is implanted without exposure to skin tissue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the device is exposed at the distal end of the insertion tool during insertion, then the device can be delivered through the tunnel, but the device may dislocate from the insertion tool or be damaged
Solution Approach 1:
A sheath or cover is used to enclose the device during insertion, providing protection while allowing controlled delivery. The sheath acts as a flexible barrier that can be retracted or opened to release the device into the subcutaneous pocket without direct exposure to tissue.
Solution Approach 2:
An intermediary structure (such as a retention mechanism or coupling element) is introduced between the insertion tool and the device to prevent direct contact and potential dislocation. This intermediary element secures the device during insertion and can be released once the device is properly positioned.
2Productivity
If force is applied to rotate the insertion tool back and forth to force the device through the tunnel, then the device can be positioned in the pocket, but the device may dislocate or be damaged
Solution Approach 1:
The manual rotation and forcing action is replaced by a controlled mechanical delivery mechanism. The insertion tool incorporates a mechanism that advances the device through the tunnel in a controlled manner without requiring back-and-forth rotation, reducing mechanical stress on the device.
Solution Approach 2:
The tunnel is pre-formed and prepared before device insertion. The insertion tool is designed to deliver the device smoothly through the pre-created tunnel without requiring excessive force or rotation, as the path is already established and optimized for device passage.
3Ease of operation
If the device is exposed at the distal end during implantation, then the device can be delivered, but trauma to the inside of the pocket increases causing bleeding and signal distortion
Solution Approach 1:
A protective sheath or cover encloses the device during insertion and is retracted or opened only at the moment of delivery. This minimizes the duration and extent of device exposure to tissue, reducing mechanical trauma and the risk of bleeding or signal distortion.
Solution Approach 2:
The subcutaneous pocket is pre-formed and prepared before device insertion. This allows the device to be delivered into a ready-made space without requiring exposure or manipulation within the tissue, minimizing trauma to the pocket interior.
Data Source
AI summary
An insertion tool for creating a subcutaneous pocket and implanting a device in the pocket. The tool may include a handle, a tunneling tube, a dissector, and an inserter. The dissector may be configured to create the subcutaneous pocket, move from an extended position to a retracted position, and rotate from an operating position disposed on a longitudinal axis of the tunneling tube to an idle position. The insertor including a cannula and configured to hold the device in a passage of the cannula, rotate from an idle position to an operating position disposed on the longitudinal axis of the tunneling tube, and move from a retracted position to an extended position in which the cannula is at least partially within the tunneling tube. The tunneling tube is configured to retract to release the device out of the tunneling tube and deploy the device in the subcutaneous pocket.