Universal Impulse Mass for Surgical Driving Tools
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Solution Overview
Problem
Current surgical instrument sets require multiple handovers of tools during bone bore widening procedures in reconstructive surgery, leading to increased risk of errors and prolonged operating times due to the need for multiple assistants and complex tool handling.
Innovation Solution
A surgical instrument set featuring a rod-shaped driving tool with complementary structures for force transmission and a hammer-shaped impulse mass that allows for both driving and expelling forces to be applied using a single tool, reducing the need for multiple tool handovers and simplifying the workflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple tools are used for driving and expelling dilators, then force application is effective, but tool handovers increase complexity and error risk
Solution Approach 1:
The patent combines the functions of driving and expelling dilators into a single impulse mass tool. The impulse mass features complementary structures with different surface orientations: a first surface pairing for driving forces and a second surface pairing for expelling forces. This merging eliminates the need for multiple tools and handovers, reducing complexity and error risk while maintaining effective force application in both directions.
2Productivity
If multiple assistants are involved for tool handovers, then tool availability is ensured, but operating time increases
Solution Approach 1:
The impulse mass is designed as a universal tool that performs multiple functions: it can drive dilators into bone bores, expel them, and be reused for subsequent dilation stages. The complementary structures with differently oriented surface pairings enable this multi-functionality. This eliminates the need for multiple assistants and tool handovers, significantly reducing operating time while simplifying the workflow.
3Manufacturing precision
If dilators are driven in and out multiple times, then bone bore widening is achieved, but force application efficiency decreases
Solution Approach 1:
The impulse mass employs dynamic force application through its complementary structures. The first surface pairing efficiently transmits driving forces to advance dilators into bone bores, while the second surface pairing efficiently transmits expelling forces to remove them. This dynamic design maintains high force application efficiency throughout multiple dilation stages, enabling precise bone bore widening without power loss.
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
This configuration minimizes errors, reduces operating time, and decreases costs by allowing the surgeon to maintain control over the impulse mass, eliminating the need for multiple handouts and simplifying the process of applying forces during bone bore widening.
Implementation Method 1
The force for ejecting the dilator is generated by an impulse mass wrapped around the shaft, which is accelerated away from the bone bore against a stop surface at the other end of the dilator.
Data Source
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AI summary
A surgical instrument kit comprises at least one rod-shaped driving tool (10), which has a shank (22) with a first end (16) and a second end (24) and which is designed for the introduction of external forces in the direction of the first end or away therefrom, and an impact mass (14) for applying external forces at the second end. The second end of the driving tool and the impact mass have a force transmission surface (26, 28) each, said surfaces forming a pair of surfaces (29) via which the external forces can be introduced in the direction of the first end of the driving tool. The driving tool and the impact mass are furthermore provided with complementary structures (30) via which the external forces can be applied in a direction away from the first end of the driving tool so that during surgery, the impact mass for driving in or out the driving tool does not have to be exchanged.