Insertion Tool Cannula Rod Mechanism for Subcutaneous Pocket Creation
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Solution Overview
Problem
Existing insertion tools for implantable devices in subcutaneous tissue often expose the device during insertion, leading to dislocation, damage, and increased trauma, which can result in bleeding and signal distortion, reducing the device's longevity and accuracy.
Innovation Solution
An improved insertion tool with a cannula that moves between extended and retracted positions, featuring a dissector tip and a rod to create a subcutaneous pocket while shielding the device, and an actuator to control the cannula's movement, ensuring the device is securely held and implanted without exposure.
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 lead the insertion tool through the tunnel, but the device may be dislocated from the insertion tool or damaged
Solution Approach 1:
A shield member is introduced as an intermediary component between the device and the external environment. The shield member has a proximal end that engages with the device and a distal end that extends beyond the device, creating a protective barrier that prevents tissue contact while maintaining the device's ability to be inserted through the tunnel.
Solution Approach 2:
The shield member is designed as a flexible structure that can deform and adapt during insertion. The flexible nature of the shield member allows it to conform to the tunnel geometry while maintaining continuous protection of the device, preventing dislocation and damage throughout the insertion process.
2Ease of operation
If the device is exposed at the distal end of the insertion tool, then the device can be positioned into the pocket, but trauma to the inside of the pocket increases causing bleeding and signal distortion
Solution Approach 1:
The shield member serves as a mediator that interfaces with the subcutaneous pocket tissue instead of the device directly contacting the tissue. This intermediary approach allows for controlled positioning into the pocket while minimizing traumatic interaction, thereby reducing bleeding and signal distortion.
Solution Approach 2:
The shield member provides preliminary protection by preemptively blocking direct contact between the device and the sensitive subcutaneous pocket tissue. This preliminary anti-action prevents harmful effects before they can occur, ensuring minimal trauma during the positioning process.
3Productivity
If the device is exposed during insertion, then the device can be inserted, but the longevity and accuracy of the device are reduced
Solution Approach 1:
The shield member acts as a protective intermediary throughout the entire insertion process, allowing efficient device deployment while simultaneously preserving device integrity. This dual function maintains both productivity and reliability, ensuring the device achieves its full operational lifespan and accuracy potential.
Data Source
AI summary
An insertion tool for creating a subcutaneous pocket and implanting a device in the pocket. The tool may include a cannula extending from a handle, a dissector tip disposed at a distal end of the cannula, and a rod. The cannula and dissector tip may create the pocket. The cannula may include a passage and an opening into the passage, and the cannula may be disposed in the passage and move along the passage between a retracted position and an extended position. The rod and the cannula may be configured such that, when the rod is at the retracted position, the cannula holds the device in the passage, and as the cannula moves from the extended position to the retracted position, the rod forces the device through the opening at the distal end of the cannula, at least partially out of the cannula, and at least partially into the pocket.