Trephine Drill With Movable Rod For Bone Depth Control
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Solution Overview
Problem
Conventional trephine drills face challenges in precisely controlling the perforation depth of alveolar bone and efficiently removing the generated bone piece during the implantation process, requiring additional tools for bone piece removal.
Innovation Solution
A trephine drill design featuring a perforating body with a movable perforating rod and fastening unit, allowing for adjustable perforation depth and easy removal of bone pieces through a discharge hole or catching unit, enabling precise perforation and tool-free bone piece extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional trephine drill is used to perforate the alveolar bone, then the bone perforation can be performed, but the perforation depth cannot be precisely controlled and bone pieces remain trapped inside the drill
Solution Approach 1:
The drill rod is nested inside the perforating body, allowing it to move reciprocally within the hollow cylindrical space. This nested configuration enables the drill rod to push bone pieces out through the discharge hole while maintaining precise depth control through its movable positioning relative to the perforating body.
Solution Approach 2:
The drill rod is designed to move dynamically between extended and retracted positions relative to the perforating body. When extended, it facilitates bone piece removal; when retracted, it enables precise depth control during perforation. This dynamic movement resolves the contradiction between depth precision and bone piece ejection.
2Ease of operation
If the drill rod is made movable to enable bone piece removal, then bone pieces can be easily ejected, but the structural complexity of the drill increases
Solution Approach 1:
The drill is segmented into two main components: the perforating body (hollow cylindrical structure) and the drill rod (separate movable element). This segmentation allows the drill rod to be independently moved for bone piece removal while keeping the overall structure relatively simple and modular.
Solution Approach 2:
The movable drill rod serves a dual function: it performs the perforation action and simultaneously serves as a tool to push bone pieces out through the discharge hole. This self-service capability eliminates the need for separate bone removal tools, reducing operational complexity despite the added mechanical movement capability.
3Ease of operation
If a through hole is provided in the perforating body for bone piece discharge, then bone pieces can be removed easily, but the structural integrity of the perforating body is reduced
Solution Approach 1:
The discharge hole is provided locally in the lateral wall of the perforating body at a specific position, rather than creating multiple holes or compromising the overall structure. This localized opening maintains the structural integrity of the perforating body while providing sufficient passage for bone piece removal.
Data Source
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AI summary
Disclosed is a trephine drill for an implant. The trephine drill for the implant includes: a perforating body which comprises a first end part provided with a cutter for perforating the alveolar bone and a second end part formed with a through hole; and a rod body which couples with the perforating body to move close to and apart from the first end part of the perforating body toward the through hole of the perforating body and adjusts a perforation depth when perforating the alveolar bone. With this, not only an alveolar bone is precisely perforated at a preset depth, but also an alveolar bone piece, generated when perforating the alveolar bone, is easily removed from inside of a perforating body.