Triangular Pyramid Ultrasonic Osteotome Bit for Spine Surgery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current ultrasonic osteotome bits with square or circular shapes are inefficient for bone grinding in spine surgery, leading to slow operation speed, increased healing time, and potential complications due to incomplete closure of bone faces during procedures like single-door laminoplasty.
Innovation Solution
Designing the ultrasonic osteotome bit with a triangular pyramid bit grinding portion, where the front end is small for high grinding speed and provides a good visual field, and the unique V-shaped structure ensures fully closed V-shaped grooves at any operating angle, reducing the incision window area and improving surgical efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a square or circular ultrasonic osteotome bit is used for bone grinding, then the grinding area is large, but the operation speed is slow and the amount of bone to be removed is large
Solution Approach 1:
The bit grinding portion is divided into multiple grinding faces (first grinding face and second grinding face) that form a V-shaped groove structure. This segmentation allows the bone to be ground more efficiently by creating a focused V-shaped groove rather than a broad flat surface, thereby increasing operation speed while maintaining effective grinding area.
Solution Approach 2:
The bit grinding portion transitions from a two-dimensional flat surface (square or circular) to a three-dimensional V-shaped pyramidal structure. This dimensional change concentrates the grinding action along the V-shaped groove, enabling faster bone removal and improved operation speed without sacrificing grinding effectiveness.
2Area of moving object
If a square or circular ultrasonic osteotome bit is used for hinge side grinding, then the grinding area is large, but the bone faces cannot be in close contact when closed, increasing healing time
Solution Approach 1:
The bit grinding portion creates a V-shaped groove by dividing the grinding action into two distinct grinding faces. This segmentation ensures that the groove walls are smooth and precisely formed, allowing the bone faces to fit together like puzzle pieces and achieve close contact when closed, thereby improving reliability and reducing healing time.
Solution Approach 2:
The V-shaped groove formed by the bit has smooth curved surfaces rather than sharp edges. This curvature ensures that the opposing bone faces can make intimate contact without gaps or irregularities, promoting proper healing and reducing complications.
3Productivity
If a triangular pyramid bit grinding portion is used, then the grinding speed is high and visual field is improved, but the structure is more complex
Solution Approach 1:
The bit grinding portion adopts an asymmetric triangular pyramidal shape rather than a symmetric square or circular form. This asymmetric design concentrates the grinding action at the V-shaped groove, increasing grinding speed and improving visual field by removing more bone efficiently, while the geometric simplicity of the pyramid maintains manufacturing feasibility.
Solution Approach 2:
The V-shaped pyramidal bit structure serves multiple functions: it creates precise V-shaped grooves for bone cutting, provides a small front end for high grinding speed and good visual field, and forms smooth groove walls for proper bone face closure. This multi-functionality justifies the slightly increased structural complexity.
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 triangular pyramid design enhances grinding speed, provides a better visual field for surgeons, ensures complete closure of bone grooves, reduces the area of the incision window, and shortens healing time by minimizing the amount of bone removed, thus improving surgical efficiency and safety.
Implementation Method 1
an ultrasonic osteotome is often used to perform cutting, grinding, shaving, scraping or any shaping on bones
Data Source
AI summary
An ultrasonic osteotome bit, comprising a bit bar (1), a bit body (3), and a bit grinding portion (2) located at a front end of the ultrasonic osteotome bit. The bit grinding portion (2) is in the shape of a triangular pyramid, the bottom face of the triangular pyramid is the rear end of the bit grinding portion (2), and the tip of the triangular pyramid directly facing the bottom face is the front end of the bit grinding portion (2). One end of the bit bar (1) is connected to the rear end of the bit grinding portion (2), and the other end of the bit bar (1) is connected to the bit body (3). Two of the three lateral pyramidal faces of the triangular pyramid are respectively used as a first grinding face (21A) and a second grinding face (21B). By means of the ultrasonic osteotome bit, a normal bone-grinding operation can be completed, and since the front end thereof is small in area, the grinding speed is high. In addition, owing to the design in which the front end is small while the rear end is large, a good visual field can be provided for a surgeon. Moreover, with the unique full V-shaped structures design, the surgeon can guarantee that bone grooves at a hinge side after grinding form fully closed V-shaped grooves at any operating angle, thereby reducing the area of an incision window, facilitating the use by a surgeon and improving the surgical efficiency.