Technique Simulator Radial Artery Puncture Training
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Solution Overview
Problem
Conventional technique simulators for training to puncture the radial artery lack a simulated radial styloid process, making it difficult for users to learn the precise location and technique for puncturing the radial artery effectively.
Innovation Solution
A technique simulator with an arm model featuring a simulated human subcutaneous region, a simulated radial styloid process, and a simulated blood vessel, allowing users to practice puncturing by locating the radial styloid process through the skin and experiencing a simulation that approximates actual body procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional technique simulator without a simulated radial styloid process is used, then the device complexity is reduced and manufacturing is easier, but the training effectiveness and realism of the simulation deteriorate
Solution Approach 1:
The patent creates a simplified copy of the human wrist anatomy by forming a storage groove in the arm model that contains simulated subcutaneous tissue and a simulated radial styloid process. This copy reproduces the essential anatomical relationships without requiring exact replication of all tissue layers, thereby improving training realism while controlling manufacturing complexity.
Solution Approach 2:
The wrist model is segmented into distinct functional components: the arm model with storage groove, simulated subcutaneous tissue layer, simulated radial styloid process, and simulated blood vessel. This segmentation allows each component to be optimized independently for its specific function while maintaining overall anatomical accuracy for effective training.
2Ease of operation
If a simulated radial styloid process is added to provide anatomical landmarks, then the ease of locating the puncture site is improved, but the device complexity increases
Solution Approach 1:
The simulated radial styloid process acts as an intermediary anatomical landmark between the skin surface and the radial artery. It provides a palpable reference point that mediates the user's ability to locate the correct puncture site without requiring direct visualization or complex imaging, thereby improving ease of operation.
Solution Approach 2:
The simulated radial styloid process is pre-positioned in the storage groove at the correct anatomical location before the training exercise begins. This preliminary arrangement of anatomical structures allows users to immediately practice landmark identification and puncture technique without needing to first locate or establish reference points during the procedure.
3Reliability
If a simulated subcutaneous region is formed to house the blood vessel, then the realism of the simulation is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The storage groove creates a simplified copy of the subcutaneous space, reproducing the essential function of housing and protecting the simulated blood vessel without requiring exact replication of all subcutaneous tissue structures. This approach achieves sufficient realism for training purposes while reducing manufacturing precision requirements.
Solution Approach 2:
The simulated subcutaneous tissue is provided with differentiated local qualities: the storage groove walls provide structural containment, the simulated tissue layer provides appropriate depth and texture, and the simulated radial styloid process provides a hard landmark. Each local region is optimized for its specific function rather than requiring uniform high precision throughout.
Data Source
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AI summary
A technique simulator for training a user to introduce a medical device into a radial artery of a human body. The technique simulator includes an arm model possessing an appearance that imitates portions of a human arm including at least a wrist and a simulated human subcutaneous region arranged in a storage groove formed in the wrist of the arm model. The technique simulator also includes a simulated human radial styloid process arranged in a bone arranging hole formed in the simulated human subcutaneous region and a simulated human skin that covers a simulated human blood vessel. The simulated human blood vessel is configured to be inserted in the simulated human subcutaneous region and the simulated human radial styloid process.