Wound Box Trainer Annular Cavity Tissue Simulation
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Solution Overview
Problem
Existing medical training devices, such as mannequins and wearable simulants, often constrain movement and compression of the simulant near a wound structure when probed or packed, failing to adequately simulate the expansion and contraction of flesh and tissues, thus limiting their effectiveness as training tools.
Innovation Solution
A wound box trainer with a compressible body and annular cavity within a carrying case, allowing for movement and expansion of the wall between the wound and annular cavities, simulating the compression and expansion of tissues and organs around a wound, while a bleed tube facilitates realistic blood flow and packing simulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the simulant is placed within a rigid box-like structure for transport and protection, then the simulant is protected and convenient for transport, but the simulant's movement and compression are constrained when the wound cavity is probed or packed
Solution Approach 1:
The box structure is segmented into a rigid outer shell and an inner movable cavity. The rigid shell provides protection and transport convenience, while the inner cavity containing the simulant can move and compress independently when probed or packed, resolving the contradiction between protection and operational freedom.
Solution Approach 2:
The simulant is nested within the movable inner cavity, which itself is nested within the rigid outer shell. This nested structure allows the simulant to be protected by the outer shell during transport while enabling independent movement and compression during medical procedures through the movable inner cavity.
2Strength
If the box structure constrains the simulant to maintain structural integrity during transport, then the simulant is protected from damage, but the simulant cannot adequately simulate compression of flesh, tissues, and organs during probing and packing
Solution Approach 1:
The inner cavity is designed to be dynamic rather than rigid, allowing it to move and compress in response to probing and packing forces. This dynamic characteristic enables the simulant to accurately simulate tissue compression during medical procedures while the outer shell maintains structural integrity for protected transport.
Solution Approach 2:
Different parts of the structure have different mechanical properties: the outer shell is rigid for protection during transport, while the inner cavity is compliant and movable to simulate tissue compression during procedures. This local differentiation of mechanical properties resolves the contradiction between structural integrity and simulation accuracy.
3Reliability
If the simulant is designed with realistic tissue compression capabilities, then the training simulation is more accurate, but the device becomes more complex and difficult to manufacture
Solution Approach 1:
The complex simulation capability is achieved through segmentation into simple components: a rigid outer shell and a movable inner cavity. This segmentation allows realistic tissue compression simulation through the interaction of simple parts rather than complex mechanisms, maintaining manufacturing simplicity while achieving training accuracy.
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 device allows for realistic simulation of wound probing and packing, enabling trainees to practice treatment techniques effectively by mimicking the movement and expansion of tissues and organs, enhancing the training experience without the limitations of previous devices.
Implementation Method 1
the case does not compromise movement and compression of the simulant immediately adjacent to a wound structure in response to probing and packing
Implementation Method 2
The annular cavity permits movement or expansion of a wall defined by and disposed between the wound cavity and the annular cavity
Data Source
AI summary
A training device applicable to training personnel in the treatment of a traumatic injury is presented. The wound box trainer includes a case, a compressible body, a wound structure, and an annular cavity. The case further includes a base and a lid. The compressible body simulates a portion of a body and further includes a top surface and a bottom surface. The compressible body resides within the base. The wound structure simulates an injury disposed along the compressible body. The wound structure includes a wound cavity which extends into the compressible body. An annular cavity extends into the compressible body about the wound cavity. The annular cavity permits movement and/or expansion of a wall defined by and between the wound cavity and the annular cavity when probed by a finger or instrument and packed with gauze, bandages, and the like during treatment of the wound structure to stem blood lose from a bleed tube.