Open-Cavity Reduced-Pressure Treatment System
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Solution Overview
Problem
Current methods for managing abdominal wounds, particularly those requiring reentry into the abdominal cavity, face challenges in effectively removing excess fluids, providing nonadherent barriers, and delivering reduced pressure, often leading to suboptimal results and potential harm due to mechanical closure devices and pressure issues.
Innovation Solution
An open-cavity, reduced-pressure treatment system comprising encapsulated leg members with fenestrations for fluid flow, a central connection member for fluid communication, and a fluid delivery subsystem for delivering reduced pressure and fluids, along with a sealing member for pneumatic sealing and a non-adherent drape for tissue protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If mechanical closure devices (sutures, staples, clips) are used to close the abdominal opening, then the skin can be held and pulled, but the devices cause wounds in themselves and may tear out when pressure rises due to edema
Solution Approach 1:
The patent replaces mechanical closure devices (sutures, staples, clips) with a reduced-pressure therapy system that uses negative pressure to approximate tissues and manage the wound. The system applies vacuum pressure through a sealed drape to draw wound edges together and maintain closure without mechanical penetration of the tissue, thereby eliminating the harmful effects of mechanical devices while maintaining closure strength.
2Ease of manufacture
If towels are placed into the cavity and skin is closed over them using clips, then the procedure is simple and fast, but the results are suboptimal
Solution Approach 1:
The patent integrates multiple functions into a single system: the adhesive drape provides both sealing and support for the wound management system, the foam pad serves as both a structural support and a medium for reduced-pressure application, and the same system simultaneously removes fluids, delivers medication, and approximates tissues. This multi-functional integration maintains ease of installation while significantly improving treatment effectiveness compared to simple towel packing.
3Object-affected harmful factors
If a bag is sutured into place to cover the open abdomen (Bogota bag), then the abdominal cavity is protected, but the system lacks fluid removal capability and reduced pressure delivery
Solution Approach 1:
The patent divides the wound management system into functional segments: an adhesive drape for sealing and protection, a foam pad for structure and pressure distribution, and integrated ports for fluid removal and medication delivery. This segmentation allows the system to provide cavity protection while simultaneously enabling fluid evacuation and reduced-pressure therapy, overcoming the limitations of the Bogota bag's single-function design.
4Ease of manufacture
If towels are packed in the wound and the abdomen is covered with a drape and drain (vac pack), then the procedure is simple, but the system lacks proper reduced pressure delivery and fluid removal integration
Solution Approach 1:
The patent merges fluid removal, reduced-pressure delivery, and wound protection into a single integrated system. The adhesive drape creates a sealed environment, the foam pad provides structural support and pressure distribution, and integrated ports allow simultaneous fluid evacuation and negative pressure application. This combination maintains the simplicity of placement while achieving sophisticated integrated fluid and pressure management that simple packing cannot provide.
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 efficiently removes excess fluids, protects the abdominal cavity, and promotes healing by delivering reduced pressure, accommodating various locations and sizes, while minimizing tissue adhesion and pressure-related complications.
Implementation Method 1
a reduced-pressure source in fluid communication with the foam pad through the at least one fluid communication channel
Implementation Method 2
The system efficiently removes excess fluids, protects the abdominal cavity, and promotes healing by delivering reduced pressure
Implementation Method 3
the encapsulated leg members including fenestrations to allow fluid flow between an outer surface of the encapsulated leg members and the interior portion
Implementation Method 4
a sealing member for pneumatic sealing
Implementation Method 5
a non-adherent drape for tissue protection
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
An open-cavity, reduced-pressure treatment device and system for treating a cavity in a patient's body, such as an abdominal cavity, is presented. In one instance, an open-cavity, reduced-pressure treatment device includes a plurality of encapsulated leg members, each having an interior portion with a leg manifold member and formed with fenestrations operable to allow fluid flow into the interior portion, and a central connection member fluidly coupled to the plurality of encapsulated leg members. The central connection member has a connection manifold member. The open-cavity, reduced-pressure treatment devices, systems, and methods allow for, among other things, removal of fluids.