Modular Telescoping Surgical Instrument With Adjustable Retention
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Solution Overview
Problem
Surgical instruments for orthopedic surgery often lack configuration flexibility, which limits their utility and requires multiple instruments for different procedures, whereas tools that can be customized to individual preferences are more versatile and efficient.
Innovation Solution
A modular telescoping surgical instrument with a retention mechanism that allows adjustable length and conversion between bayonet and non-bayonet versions, utilizing a collet and threaded knob to securely fix the working end relative to the handle, enabling length adjustment and configuration flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If surgical instruments are made static in configuration, then manufacturing and operation are simplified, but configuration flexibility and versatility are reduced
Solution Approach 1:
The surgical instrument is divided into modular components including a handle, a telescoping shaft with multiple segments, and a working end. These segments can be independently adjusted and reconfigured, allowing the instrument to adapt to different surgical procedures while maintaining manageable complexity through standardized connection interfaces
Solution Approach 2:
The instrument incorporates dynamic adjustment mechanisms including a telescoping shaft with adjustable length segments and a rotatable working end that can be positioned at different angles. These dynamic features allow real-time reconfiguration during surgical procedures to match specific surgical needs
2Adaptability or versatility
If multiple surgical instruments are used to provide configuration flexibility, then adaptability is improved, but the quantity of instruments and device complexity increase
Solution Approach 1:
The surgical instrument is designed as a universal platform that can perform multiple surgical functions through a single instrument. The handle accommodates various working ends, the telescoping shaft provides adjustable length for different access requirements, and the rotatable joint enables different approach angles, eliminating the need for multiple specialized instruments
3Adaptability or versatility
If the working end is made adjustable relative to the handle, then configuration flexibility is improved, but the retention and securing mechanism complexity increases
Solution Approach 1:
The retention mechanism uses a separate threaded fastener that can be independently adjusted and secured. This extracted retention component allows length adjustment of the telescoping shaft while maintaining a simple, reliable securing mechanism that does not complicate the overall instrument design
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The modular design reduces the number of instruments needed by allowing surgeons to customize the length and configuration of the surgical instrument, enhancing its versatility and utility in various surgical procedures.
Implementation Method 1
the knob axially compresses the collet towards and into the internal angled walls of the neck of the front portion of the handle thereby causing axial flanges of the collet to radially compress around and against a portion of the working end to fix the working end relative to the handle
Implementation Method 2
radially compress around and against a portion of the working end to fix the working end relative to the handle
Implementation Method 3
The threaded knob is received on a threaded end of the neck of the handle and at the proximate end of the collet. As the threaded knob is received on the neck of the handle, the knob axially compresses the collet
Implementation Method 4
the knob axially compresses the collet towards and into the internal angled walls of the neck of the front portion of the handle thereby causing axial flanges of the collet to radially compress around and against a portion of the working end
Data Source
AI summary
A surgical instrument provides rotational and axial variations of a working end relative to a handle of the surgical instrument for configuration flexibility of the working end. An internal configuration of the handle of the surgical instrument accepts a retention portion of the working end in several positions. The working end can be varied in axial length relative to a front end of the handle and in axial position relative to the extension of the working end from the front end of the handle. A retention mechanism interacts with the handle and the working end to fix a position of the working end in the handle. The working end may be shaped to provide a bayonet version wherein the working end extends from the front end of the handle offset from the handle's longitudinal center, and a non-bayonet version wherein the working end extends from the handle's longitudinal center.