Beveled Percutaneous Release Instrument for Minimal Tissue Damage
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Solution Overview
Problem
Existing medical instruments for percutaneous release procedures, such as carpal tunnel release and A1 pulley release, require large incisions and can cause damage to surrounding tissues due to their complex configurations.
Innovation Solution
A medical instrument with an elongated rod member having a beveled or flattened end designed for percutaneous use, featuring a beveled or flattened cutting edge that minimizes tissue damage and allows for minimally invasive procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If simple puncture needles are used for percutaneous release procedures, then the incision size is minimized, but the ease of operation deteriorates due to difficulty in controlling the release process
Solution Approach 1:
The instrument is divided into distinct functional segments: a handle portion for operator control and an elongated rod member with a beveled end for tissue release. This segmentation allows the operator to manipulate the instrument through a small incision while maintaining control over the release process, resolving the contradiction between minimal incision size and ease of operation.
Solution Approach 2:
The beveled end of the rod member creates a cutting edge through geometric configuration rather than requiring a large incision. The bevel angle transforms the rod's longitudinal dimension into an effective cutting surface, enabling tissue release through a minimal puncture while maintaining operational control.
2Ease of operation
If complex instruments like hook knives or push knives are used, then the ease of operation improves for tissue release, but the device complexity increases and larger incisions are required
Solution Approach 1:
The invention extracts only the essential functional elements needed for tissue release, eliminating unnecessary components found in complex instruments like hook knives or push knives. The simplified design consists of a handle portion and an elongated rod member with a beveled end, reducing device complexity while maintaining ease of operation through the beveled cutting edge.
Solution Approach 2:
The invention changes the geometric parameter of the rod end from a simple rounded or pointed shape to a beveled configuration. This parameter change creates an effective cutting edge that simplifies the overall device structure while maintaining ease of operation for tissue release, avoiding the need for complex mechanisms.
3Strength
If traditional surgical instruments are used, then the cutting effectiveness is sufficient, but the object-affected harmful factors increase due to damage to surrounding tissues
Solution Approach 1:
The beveled end configuration concentrates the cutting action at a localized edge rather than distributing it across a broader surface. This local quality ensures effective tissue release while minimizing contact with and damage to surrounding tissues, resolving the contradiction between cutting effectiveness and reduction of harmful effects.
Solution Approach 2:
Instead of using a traditional blade that requires lateral movement through tissue, the invention inverts the approach by using a beveled rod that cuts through tissue in the direction of insertion. This inverted cutting mechanism reduces tissue displacement and damage to surrounding structures while maintaining cutting effectiveness.
Data Source
AI summary
A medical instrument for percutaneous release procedures including a handle portion designed to allow handling, orientation and manipulation of the medical instrument by a surgeon, and an elongated rod member secured to the handle portion and extending substantially within a defined plane. A first portion of the elongated rod member extends substantially along a first direction within the defined plane away from the handle portion, and a second portion of the elongated rod member, downstream of the first portion, is curved within the defined plane. A free end of the elongated rod member, at a terminal end of the second portion, is designed to act as a cutting device to sever tissue. An end section of the elongated rod member, at the terminal end of the second portion, extends substantially perpendicularly to the first direction.