Vibrating Retractor Tip for Injection Pain Reduction
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Solution Overview
Problem
Current methods for reducing pain during skin puncturing procedures, such as injections, are either cumbersome, time-consuming, or ineffective in completely eliminating pain.
Innovation Solution
A handheld retractor vibrator apparatus that vibrates skin or tissue areas adjacent to the injection site using a detachable tip with bifurcated projections, powered by rechargeable batteries and equipped with a music player and lights, to minimize pain during injections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If cold material or topical treatment is applied to reduce pain, then pain reduction is achieved, but the procedure becomes cumbersome and time-consuming
Solution Approach 1:
The patent applies mechanical vibration through a vibrator attached to the needle shaft, which vibrates at high frequency during the injection procedure. This vibration directly affects the pain perception mechanism by stimulating nerve endings and distracting the patient from the injection pain, eliminating the need for separate cold materials or topical treatments while maintaining procedure simplicity
2Object-affected harmful factors
If manual massaging is performed during injection, then some pain reduction is achieved, but it is time-consuming and of limited effect
Solution Approach 1:
The vibrator device provides continuous mechanical vibration throughout the injection procedure without requiring manual massaging actions. The high-frequency vibration automatically stimulates nerve endings and provides pain relief throughout the entire injection process, eliminating the time loss associated with manual massaging while achieving more consistent pain reduction
3Object-affected harmful factors
If vibration is applied to tissue areas, then pain is significantly reduced, but the device complexity increases
Solution Approach 1:
The patent merges the vibration mechanism directly with the needle assembly, combining the injection function and pain relief function into a single integrated device. The vibrator is attached to the needle shaft, and the handle serves multiple purposes: controlling the vibration, providing power (via battery), and serving as the operator's grip. This integration minimizes device complexity while achieving effective pain reduction through vibration
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 apparatus effectively reduces pain by vibrating the tissue around the injection site, making the procedure nearly painless by stimulating nerves and distracting the patient with music and light.
Implementation Method 1
a vibration unit mounted in the main body when initiated to cause the main body to vibrate
Implementation Method 2
the use of which will overcome those disadvantages when injecting an anesthetic... to almost completely or substantially eliminate the pain attendant an injection
Data Source
AI summary
A handheld instrument for minimizing pain during administration by injection of a liquid, such as, an anesthetic that has a main body, a vibration unit mounted in the main body when initiated to cause the main body to vibrate, and a detachable tip cantilever mounted on the main body to vibrate with it, the tip having a free end characterized by a bifurcation to form two spaced projections defining a space between them, whereby the spaced projections can be placed in proximity to, adjacent to and bracketing a preselected injection site on a human or animal and the tissue at said preselected injection site and vibrated while an injection is given.


