Hydraulic Bone Cement Injection System with Pressure Control
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Solution Overview
Problem
Current bone cement injection systems face challenges such as repeated radiation exposure during procedures, inefficiencies in delivering cement to target areas due to viscosity issues, and the need for frequent device switching during multi-site injections, leading to potential leakage and tissue damage.
Innovation Solution
A hydraulic injection system comprising a cement cartridge assembly, a hydraulic injector, and conduits that allow for the delivery of bone cement to a target anatomical location while maintaining the operator outside the radiation field, featuring a suction check valve and outlet control valve assembly to manage fluid pressure and flow effectively, capable of handling both high and low viscosity cements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If bone cement injection is performed under imaging guidance (fluoroscopy or CT), then injection precision is improved, but radiation exposure to surgeons increases
Solution Approach 1:
The system separates the injection function from the imaging function by providing multiple independent injection devices, each with its own cartridge and control mechanism, allowing precise targeting without continuous imaging exposure
Solution Approach 2:
The patent introduces a specialized injection device with integrated pressure control and flow management as an intermediary between the surgeon and the target site, enabling precise cement delivery through engineered flow paths and pressure regulation rather than relying on continuous imaging guidance
2Adaptability or versatility
If multiple injection devices are used for multi-site procedures, then coverage of target areas is improved, but procedure time and complexity increase
Solution Approach 1:
The injection device is designed with universal applicability through standardized cartridge interfaces and multiple outlet ports that can accommodate various injection sites and configurations, allowing a single device type to perform multiple functions across different anatomical locations
Solution Approach 2:
The patent combines multiple injection capabilities into a single integrated device by incorporating multiple cartridges and outlet ports within one system, eliminating the need to switch between separate devices while maintaining the ability to target multiple sites
3Object-generated harmful factors
If high viscosity bone cement is used, then leakage and tissue damage are reduced, but injection reliability decreases
Solution Approach 1:
The system dynamically adjusts injection parameters through pressure control mechanisms and flow regulation features that adapt to the specific viscosity of the bone cement being injected, ensuring reliable delivery regardless of cement viscosity variations
Solution Approach 2:
The patent employs pressure control and flow management features that can be adjusted to match the viscosity characteristics of different bone cements, changing the injection parameters in response to material properties to maintain injection reliability while preventing leakage
4Ease of operation
If low viscosity bone cement is used, then injection ease is improved, but leakage and tissue damage increase
Solution Approach 1:
The injection system dynamically regulates flow and pressure to accommodate low viscosity cements, using control mechanisms that prevent excessive flow rates and maintain stable injection conditions throughout the procedure
Solution Approach 2:
The system changes injection parameters such as pressure and flow rate in response to the low viscosity characteristics of the cement, adjusting these parameters to achieve easy injection while simultaneously preventing leakage through engineered flow control
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 reliable and safe injection of bone cement to anatomical locations, reducing radiation exposure and improving procedural efficiency by maintaining consistent pressure and flow, thus minimizing leakage and tissue damage.
Implementation Method 1
a suction check valve that is disposed between the fluid reservoir and the fluid chamber. The suction check valve allows fluid to travel along a direction from the fluid reservoir toward the fluid chamber, and prevents fluid from traveling from the fluid chamber to the fluid reservoir
Implementation Method 2
a piston that has a first piston end that is at least partially disposed within the fluid chamber... movement of the piston from the first position to the second position causes hydraulic fluid in the fluid chamber to be ejected out of the housing through the at least one outlet port
Data Source
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AI summary
A hydraulic injection system is provided for injecting bone cement to a target anatomical location. The injection system can include a hydraulic injector configured to dispense a pressurized fluid, a cement cartridge assembly, and one or more conduits. The cement cartridge assembly includes at least one cement cartridge configured to receive the pressurized fluid and deliver the bone cement to the target anatomical location. The conduit is connected between the hydraulic injector and the cement cartridge assembly.