Bone Cement Dispenser Pressure Release Mechanism
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Solution Overview
Problem
Current surgical methods for repairing damaged bone tissue, such as compression fractures, lack efficient tools for precise and controlled dispensing of bone cement, which can lead to issues with pressure management and precision during the healing process.
Innovation Solution
A bone cement system comprising a housing, a dispenser system, and a pressure release mechanism that allows for selective dispensing and pressure control of bone cement, enabling the system to relieve excess pressure without moving the plunger, thereby improving the precision and safety of bone cement delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If a plunger is used to dispense bone cement, then the bone cement can be delivered through the housing, but pressure builds up within the dispenser housing that cannot be released without moving the plunger
Solution Approach 1:
The pressure release system is segmented from the plunger mechanism, allowing independent operation. The pressure release system includes a body with a throughbore and slots that can rotate independently of the plunger, enabling pressure release without plunger movement. This segmentation resolves the contradiction by separating the dispensing function from the pressure release function.
Solution Approach 2:
The pressure release system acts as an intermediary mechanism between the bone cement and the external environment. It provides a controlled pathway for pressure release through slots in its body, allowing pressure to be released without requiring plunger movement. This intermediary system resolves the contradiction by mediating the pressure release process independently.
2Stress or pressure
If the plunger is moved to release pressure, then pressure is relieved, but the position of the plunger changes affecting dispensing precision
Solution Approach 1:
The system is divided into independent functional components: the plunger for precise positioning and dispensing control, and the pressure release system for pressure management. The pressure release system rotates independently within the plunger's throughbore, allowing pressure release without altering plunger position. This segmentation eliminates the trade-off between pressure release and dispensing precision.
Solution Approach 2:
The pressure release system is designed to perform pressure release as a self-contained function. The slots in the pressure release body can be rotated to align with or block the throughbore, allowing the system to self-regulate pressure without external intervention or plunger movement. This self-service capability resolves the contradiction by making pressure release independent of plunger positioning.
3Stress or pressure
If a pressure release system is added to the housing, then pressure can be released, but the device complexity increases
Solution Approach 1:
The pressure release system is nested within the existing housing structure. The pressure release body fits through the plunger's throughbore, and the entire assembly is integrated into the housing without requiring separate external components. This nesting approach minimizes device complexity by utilizing existing spatial relationships and structural elements.
Solution Approach 2:
The pressure release system serves multiple functions: it releases pressure, controls flow rate, and can be integrated with the dispensing mechanism. The same rotational mechanism that controls pressure release also provides flow control, eliminating the need for separate valves or regulators. This multi-functionality reduces overall system complexity while addressing pressure management needs.
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 system enables controlled and precise dispensing of bone cement, reducing pressure-related complications and enhancing the accuracy of bone cement distribution in anatomical repairs, thus supporting effective tissue stabilization and healing.
Implementation Method 1
a pressure release system, which can be received within the throughbore of the plunger and can be rotatable relative to the plunger to allow bone cement to flow behind the distalmost end of the plunger to release pressure within the dispenser housing
Data Source
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AI summary
The present teachings provide one or more surgical instruments for repairing damaged tissue, such as in the case of a vertebral compression fracture. The present teachings can provide a bone cement system. The system can include a housing, which can define at least a throughbore that can extend from a proximal end to a distal end of the housing. The system can also include a dispenser housing received in the throughbore of the housing that is adapted to receive a bone cement. The system can include a plunger, which can be releasably coupled to the proximal end of the housing and received into the dispenser housing so that movement of the plunger can dispense the bone cement. The system can also include a pressure release system, which can be coupled to the housing and can be movable to release pressure within the dispenser housing without moving the plunger.