IV Catheter Probe Delivery With Spool Control for Occlusion Removal
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Solution Overview
Problem
Existing catheters often become occluded, making it difficult to perform tasks such as blood withdrawal or fluid infusion, and current methods to clear occlusions can cause trauma to the vasculature.
Innovation Solution
A probe delivery device with a housing, spool, and advancement wheel mechanism that allows for controlled advancement and retraction of a probe within an IV catheter, facilitating the clearing of occlusions without causing trauma.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a needle, wire, or other structure is inserted through the catheter to remove occlusion, then the occlusion may be removed, but trauma to the vasculature of the patient may be caused
Solution Approach 1:
The probe is extracted from the delivery device through a controlled advancement mechanism that allows it to be gently advanced through the catheter to remove occlusions. The probe can be advanced distally through the catheter body to contact and remove occlusions, then retracted back into the delivery device, avoiding the need to insert traumatic external structures like needles or wires
Solution Approach 2:
The probe acts as an intermediary tool between the delivery device and the occlusion. It is advanced through the catheter lumen to contact and remove the occlusion, providing a controlled intermediate action that prevents direct trauma to the vasculature while still achieving effective occlusion removal
2Reliability
If currently available techniques are used to remove occlusion, then the occlusion may be addressed, but the procedure is difficult to perform and may cause trauma
Solution Approach 1:
The delivery device includes self-contained mechanisms for probe advancement and retraction. The spool and reel mechanism automatically winds the probe during retraction, while the advancement wheel with stop members provides controlled advancement without requiring complex external manipulation, making the procedure easier to perform
Solution Approach 2:
The probe delivery system employs dynamic mechanisms including a rotatable advancement wheel that controls probe advancement, a spool that rotates to advance or retract the probe, and movable stop members that engage at specific positions. These dynamic elements allow smooth, controlled operation that simplifies the procedure compared to static or rigid systems
3Reliability
If the probe is advanced through the catheter to clear occlusions, then effective treatment is achieved, but precise control of probe position is required
Solution Approach 1:
The system incorporates feedback mechanisms through stop members that engage with the housing at predetermined positions. The first stop member prevents over-advancement of the probe, while the second stop member prevents over-retraction. This mechanical feedback ensures the probe reaches the correct position without requiring high precision manufacturing tolerances
Solution Approach 2:
The stop members are pre-positioned within the housing at specific locations corresponding to the desired probe advancement and retraction limits. This preliminary positioning of control elements ensures that when the probe is advanced or retracted, it automatically stops at the correct positions without requiring real-time precision control during the procedure
Data Source
AI summary
A probe delivery device can include a probe delivery mechanism that facilitates advancing a probe through an IV catheter. The probe delivery mechanism can be housed within a compartment of the probe delivery device and can include a probe that extends from the compartment into a fluid pathway formed within the probe delivery device. A portion of the probe delivery mechanism can extend out from the housing to enable a clinician to advance and retract the probe. The probe delivery device may include a vacuum tube receiver or a connector to enable a blood draw or fluid injection to be performed using the probe delivery device.