Catheter Insertion Device Single-Handed Operation
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Solution Overview
Problem
Existing catheter insertion devices require two hands for insertion, increasing the risk of contamination and vessel damage due to unintended needle movement, and hinder continuous ultrasound use during the procedure.
Innovation Solution
A catheter insertion device with a handle, needle cannula, guidewire, and actuators that allow single-handed operation, enabling the guidewire and catheter to be advanced independently using a slider and release mechanism, which stabilizes the needle and facilitates one-handed insertion while maintaining sterility and continuous ultrasound use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two hands are used for insertion of guide wire and catheter, then the insertion can be completed, but the risk of contamination increases and vessel damage risk increases due to unintended needle movement
Solution Approach 1:
The device merges the functions of needle insertion, guidewire advancement, and catheter insertion into a single integrated system that can be operated with one hand. The handle assembly combines the needle cannula, guidewire with actuator, and catheter with release mechanism into one unified structure, eliminating the need for two-handed operation while maintaining sterility through integrated design.
Solution Approach 2:
The device enables self-service operation where the operator's single hand can independently control all insertion steps. The actuator mechanism allows the guidewire to be advanced without requiring the other hand to hold or stabilize components, and the release mechanism allows catheter advancement to be controlled by the same hand that inserted the needle.
2Reliability
If two hands are used for insertion, then the insertion can be completed, but the risk of unintended needle point movement and vessel damage increases
Solution Approach 1:
The device merges the functions of needle insertion, guidewire advancement, and catheter insertion into a single integrated system that can be operated with one hand. The handle assembly combines the needle cannula, guidewire with actuator, and catheter with release mechanism into one unified structure, eliminating the need for two-handed operation while maintaining sterility through integrated design.
Solution Approach 2:
The device enables self-service operation where the operator's single hand can independently control all insertion steps. The actuator mechanism allows the guidewire to be advanced without requiring the other hand to hold or stabilize components, and the release mechanism allows catheter advancement to be controlled by the same hand that inserted the needle.
3Duration of action of moving object
If two hands are used for insertion, then the insertion can be completed, but continuous ultrasound use is prevented
Solution Approach 1:
The device merges the functions of needle insertion, guidewire advancement, and catheter insertion into a single integrated system that can be operated with one hand. The handle assembly combines the needle cannula, guidewire with actuator, and catheter with release mechanism into one unified structure, eliminating the need for two-handed operation while maintaining sterility through integrated design.
Solution Approach 2:
The device enables self-service operation where the operator's single hand can independently control all insertion steps. The actuator mechanism allows the guidewire to be advanced without requiring the other hand to hold or stabilize components, and the release mechanism allows catheter advancement to be controlled by the same hand that inserted the needle.
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
A catheter insertion device that allows for single-handed insertion of the catheter within the vasculature of the patient is disclosed. The catheter insertion device includes a handle, a needle cannula partially within the handle, a guidewire partially within the handle and the needle cannula, and a first actuator connected to the handle and the guidewire. The first actuator is movable in a proximal direction relative to the handle to cause the guidewire to move in a distal direction away from the handle, and is movable in a distal direction relative to the handle to cause the guidewire to move in a proximal direction towards the handle. The catheter insertion device can also include a needle support that stabilizes the needle cannula during insertion of the needle cannula into a patient.