Irrigation Control for High-Dose Local Antibiotic Delivery
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Solution Overview
Problem
Current methods for treating periprosthetic joint infections, such as those involving artificial joints, face challenges in achieving effective antibiotic concentrations at the infection site while avoiding systemic toxicity, particularly with high-dose local administration.
Innovation Solution
A treatment delivery system with a control unit that automates the sequential delivery and removal of multiple fluids, including antibiotics, using load cells, pinch valves, and vacuum pressure to manage fluid flow and ensure safe, high-precision administration and removal, allowing for doses exceeding systemic limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-dose antibiotics are administered locally to treat periprosthetic joint infections, then treatment efficacy is improved, but systemic toxicity risks increase
Solution Approach 1:
The treatment protocol is segmented into multiple sequential phases (delivery phase, soaking phase, removal phase) that are automatically executed by the control unit. This segmentation allows precise control over antibiotic exposure time and dosage, enabling high local concentrations while limiting systemic absorption through controlled, intermittent delivery rather than continuous administration
Solution Approach 2:
The system incorporates load cells that continuously monitor fluid reservoir weights and provide feedback to the control unit. This feedback mechanism ensures accurate tracking of delivered and removed fluid volumes, enabling precise dosage control that maintains effective local antibiotic concentrations while preventing excessive systemic absorption that could lead to toxicity
2Manufacturing precision
If automated control systems are implemented for fluid delivery, then precision and safety are improved, but device complexity increases
Solution Approach 1:
The control unit serves multiple functions: it monitors load cell weights, controls phase transitions, regulates fluid delivery timing, and manages the entire treatment protocol sequence. By consolidating these diverse control functions into a single multi-functional unit, the system achieves high precision fluid delivery without proportionally increasing overall system complexity
Solution Approach 2:
The system automatically transitions between treatment phases based on pre-programmed protocols and real-time load cell feedback, without requiring manual intervention. The control unit self-regulates fluid delivery timing, duration, and sequence, providing precise automated control while reducing the operational complexity burden on users
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
Enables precise, automated fluid delivery and removal cycles that safely administer high doses of antibiotics locally, optimizing treatment efficacy without systemic toxicity risks, and ensuring accurate monitoring and safety features.
Implementation Method 1
a vacuum pump configured to create a vacuum within the canister to remove the fluid from the treatment site
Implementation Method 2
A first load cell can be included that is configured to detect a combined weight of a first weight of the first fluid in the first fluid reservoir and a second weight of the second fluid in the second fluid reservoir
Data Source
AI summary
A treatment delivery system includes a fluid delivery system connected to a first fluid reservoir and a second fluid reservoir. The system directs a first fluid from the first fluid reservoir to a treatment site and directs a second fluid from the second fluid reservoir to the treatment site and a control unit to control the fluid delivery system according to a treatment process comprising a flow of the first fluid and the second fluid, the treatment process including multiple phases. A first phase includes a controlled delivery of the first fluid from the first fluid reservoir to the treatment site. A second phase of the plurality of phases includes a controlled delivery of the second fluid from the second fluid reservoir to the treatment site, the control unit automatically activating a transition from at least the first phase to the second phase. Related devices, systems, kits, and methods are provided.