Dental Handpiece Adjustable Tool Length Guide
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Solution Overview
Problem
Existing dental handpieces require dedicated components for each implant brand and line, leading to an expensive and inflexible solution, with difficulties in manipulating drill bushings due to limited space in the mouth during dental implant fitting procedures.
Innovation Solution
A dental handpiece with a tubular guide member and adjustable mechanism that allows for varying tool length and depth control, enabling accurate positioning without removing drill bushings from the surgical template, and interchangeable guide members for compatibility with different implant sites.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dedicated components (drills, bushings, fixture mounts) are used for each implant brand and line, then compatibility with specific implant systems is improved, but device complexity and cost increase
Solution Approach 1:
The handpiece is designed with a universal interface that can accommodate different implant brands and lines through a single device. The adjustable mechanism allows the same handpiece to work with various implant systems, eliminating the need for multiple dedicated components for each implant brand and line.
Solution Approach 2:
The handpiece incorporates an adjustable mechanism that can dynamically change its configuration to suit different implant requirements. This dynamic adjustability allows the device to adapt to various implant sizes and types without requiring separate dedicated components for each scenario.
2Manufacturing precision
If drill bushings are used to control drilling depth and position, then manufacturing precision is improved, but ease of operation deteriorates due to difficulty in manipulating bushings in limited oral space
Solution Approach 1:
The handpiece integrates the depth control function directly into its structure, merging the previously separate drill bushing component with the handpiece body. This integration eliminates the need to manipulate separate bushings in the limited oral space, as the depth control is now built into the handpiece itself.
Solution Approach 2:
The invention extracts the depth control function from the separate drill bushing component and incorporates it directly into the handpiece. This extraction eliminates the need to handle and manipulate separate bushings in the difficult-to-reach oral cavity, improving ease of operation while maintaining precision.
3Ease of operation
If the surgical template is removed to take out drill bushings, then ease of operation is improved, but loss of time increases due to template removal and repositioning
Solution Approach 1:
By integrating the depth control mechanism into the handpiece itself, the invention eliminates the need to remove the surgical template to access or adjust drill bushings. The combined design allows all necessary adjustments to be made while the template remains in place, saving time.
Solution Approach 2:
The integrated handpiece design allows the surgical procedure to continue without interruption for template removal and repositioning. The depth control can be adjusted continuously during the procedure, maintaining the workflow and eliminating time losses associated with removing and repositioning the template.
4Adaptability or versatility
If an adjustable mechanism is added to vary tool length, then adaptability is improved, but device complexity increases
Solution Approach 1:
The handpiece incorporates a dynamic adjustment mechanism that allows tool length to be varied as needed. This dynamic capability provides adaptability for different implant procedures while the mechanism is designed to be integrated into the existing handpiece structure, minimizing the increase in overall device complexity.
Data Source
Figure 1~4b
Figure 2~3
Figure 5a~6b
AI summary
A dental handpiece comprises a housing (27) and a tool retaining mechanism (60) for retaining a rotary dental tool (28). The rotary dental tool rotates about a first axis (42) and the mechanism retaining the tool such that the tool extends from the housing along the first axis. A tubular guide member (35) is mounted coaxially with the first axis and has a tubular part for locating in a bore hole of a template. This serves to guide the working path of the handpiece during use. A flange (37) on the guide member extends perpendicularly with respect to the first axis and limits the depth of the rotary dental tool within the bore hole. The dental handpiece may also comprise an adjustment mechanism which adjusts the position of the tool retaining mechanism within the housing, in the direction of the first axis, to vary the length of tool which projects from the housing.