Adjustable-Weight Medical Handpiece for Deep Needle Insertion
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Solution Overview
Problem
Medical laser handpieces face issues with back push phenomena and user strain when inserting needles deeply, leading to reduced procedure efficiency and discomfort due to improper weight distribution.
Innovation Solution
A medical handpiece with a weight adjustment mechanism, allowing practitioners to customize the weight and center of gravity by adding or removing weights in different locations within the handpiece body, enhancing user comfort and procedure efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the weight of the handpiece is increased to prevent back push phenomenon, then the needle can reach the desired depth, but the wrists or shoulders of the users are strained by the weight
Solution Approach 1:
The handpiece incorporates adjustable weight components that can be configured to change the overall weight and center of gravity position. This dynamic adjustment allows the device to adapt to different procedural requirements and user preferences, optimizing both penetration capability and user comfort without being constrained by a fixed weight design
2Reliability
If the weight of the handpiece is increased to prevent back push phenomenon, then the needle can reach the desired depth, but the procedure speed slows down
Solution Approach 1:
The adjustable weight system enables practitioners to optimize the handpiece weight for each specific procedure. For procedures requiring deep insertion, additional weights can be attached to prevent back push. For procedures requiring speed and precision, weights can be reduced or removed, thereby maintaining high procedure speed while ensuring adequate penetration when needed
3Ease of operation
If the weight of the handpiece is decreased to improve user comfort, then less strain on wrists and shoulders, but back push phenomenon occurs causing the needle to come out before reaching desired depth
Solution Approach 1:
The handpiece allows practitioners to adjust the weight configuration based on their specific needs. Users with smaller stature or weaker grip strength can use lighter configurations for comfort, while still having the option to add weights when deep penetration is required. This dynamic adaptability ensures both user comfort and reliable needle insertion are achievable
4Ease of manufacture
If fixed weight handpiece is used, then manufacturing is simple, but cannot adapt to different procedure requirements or practitioner preferences
Solution Approach 1:
The handpiece is designed with separable weight components that can be independently attached or removed from the main body. This segmentation allows the base handpiece to be manufactured simply, while the weight components can be added or configured based on specific procedural needs or practitioner preferences, thereby achieving both manufacturing simplicity and operational versatility
Solution Approach 2:
The adjustable weight system transforms a static, fixed-weight design into a dynamic, adaptable configuration. The handpiece can be customized for different procedures (e.g., deep vs. shallow insertion, different tissue types) and different users, while the base manufacturing process remains relatively simple and modular
Data Source
AI summary
The present invention presents a medical laser device. The medical laser device according to one embodiment of the present invention comprises: a body, which can be gripped and has an accommodation space therein; a needle part which is coupled to a front end portion of the body such that same can be replaced, and which is inserted into the skin of a patient so as to provide a high frequency current; and at least one weight adjustment part positioned inside the body. Here, the weight adjustment part includes at least one weight, and the body includes: the accommodation space in which the weight is accommodated; and a cover fixed to one side of the accommodation space such that same is detachable.