Bone Anchor Punch With Integrated Hole Formation and Deployment
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Solution Overview
Problem
Existing medical devices face challenges in efficiently forming holes in bones and delivering anchors due to the cortical elasticity of the bone, making the process difficult and inefficient.
Innovation Solution
A bone punch and anchor delivery system with a piercing tip and anchor member configuration that allows for efficient penetration and deployment of anchors into the bone, featuring a piercing tip with enlarged regions and lumens for radial deformation of anchor legs, enabling simultaneous hole formation and anchor insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a piercing tip is driven into bone to form holes and deliver anchors, then anchor delivery is achieved, but the cortical elasticity of the bone makes the process difficult and inefficient
Solution Approach 1:
The piercing tip integrates multiple functions: it forms the bone hole and simultaneously delivers the anchor member through its internal lumen. The anchor member is pre-loaded onto the piercing tip, allowing both hole creation and anchor insertion to occur in a single continuous motion, eliminating the need for separate drilling and implantation steps.
Solution Approach 2:
The anchor member is pre-positioned on the piercing tip before bone insertion. The piercing tip is prepared with the anchor member already attached, so that when the piercing tip is driven into the bone, the anchor is automatically delivered to the target location without requiring additional manipulation or tool changes during the procedure.
2Reliability
If the piercing tip is removed after anchor delivery, then the anchor remains in the bone, but cortical elasticity causes difficulty in tool removal
Solution Approach 1:
The system separates the piercing tip (delivery tool) from the anchor member (implant). The piercing tip is designed as a temporary delivery vehicle that performs its function and is then removed, while the anchor member remains independently secured in the bone. This segmentation allows the tool to be extracted without compromising the retained anchor.
Solution Approach 2:
The piercing tip acts as an intermediary delivery mechanism that temporarily holds the anchor member during insertion. Once the anchor is delivered into the bone hole, the piercing tip completes its mission and is removed. The anchor member itself serves as the final intermediary that remains in the bone to provide the intended fixation function.
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
Facilitates efficient and effective delivery of anchors into bones, overcoming cortical elasticity and simplifying the procedure by allowing for simultaneous hole formation and anchor deployment.
Implementation Method 1
The piercing tip is configured to be driven into the bone. The anchor member is configured to penetrate the bone of the patient in cooperation with the piercing tip.
Implementation Method 2
a diameter of the lumen is less than the diameter of the enlarged region of the piercing tip. proximal retraction of the piercing tip relative to the anchor member is configured to radially deform a distal end region of the first leg and a distal end region of the second leg.
Data Source
AI summary
A delivery system for delivering an anchor member to a bone of a patient may include a bone punch including an elongate shaft, a head at a proximal end of the elongate shaft, and a piercing tip at a distal end of the elongate shaft. The piercing tip may be configured to be driven into the bone. An anchor member may be disposed over at least a portion of the piercing tip with the piercing tip extending distal of the anchor member. The anchor member may be configured to penetrate the bone of the patient in cooperation with the piercing tip.