Gastrostomy Catheter Kit with Segmented Infection-Preventing Sheath
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Solution Overview
Problem
Existing gastrostomy catheter kits face high resistance issues during insertion, causing discomfort to patients and increased difficulty for medical professionals, due to the thick over tube and resistance experienced by the catheter and stopper.
Innovation Solution
A gastrostomy catheter kit featuring a flexible, hollow tube reinforced with filaments, a deformable intragastric retainer, and a tapered member for guide wire retention, along with a flexible infection-preventing sheath that includes a socket member for retaining the intragastric retainer, allowing for easier passage and reduced diameter, thereby simplifying the insertion process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a thick over tube is used to sheathe the catheter, then the catheter and stopper can pass through, but the patient experiences increased pain and discomfort
Solution Approach 1:
The over tube is divided into two functional parts: a thin flexible tubular body for patient comfort and a separate socket member at the trailing end for securing the intragastric retainer. This segmentation allows the main tube to be thin while still providing necessary retention functionality through the detachable socket component.
Solution Approach 2:
The socket member is designed to be detachable from the tubular body, allowing dynamic adjustment during the procedure. The socket can be attached when needed for securing the retainer and detached when no longer required, enabling the system to transition between different functional states and optimizing both patient comfort and procedural needs.
2Ease of operation
If a thick over tube is used to sheathe the catheter, then the catheter can pass through, but the insertion maneuver becomes more difficult
Solution Approach 1:
By separating the retention function into a distinct socket member rather than incorporating it into the main tube body, the insertion maneuver is simplified. The thin tubular body can be easily inserted through the abdominal wall, and the socket member is added subsequently to secure the retainer, making the overall procedure more manageable.
3Ease of operation
If the intragastric retainer is made deformable, then it can pass through the sheath easily, but it may lose retention strength
Solution Approach 1:
The intragastric retainer is designed with deformable characteristics that allow it to change shape during insertion to pass through the thin sheath, and then expand or maintain its form once positioned to provide adequate retention. The socket member's detachable connection allows the retainer to be secured in a deformed state during passage, then potentially reconfigured for optimal retention.
Solution Approach 2:
The retainer is pre-configured in a compact, deformable state for easy insertion through the sheath. Once positioned in the stomach, the retainer can be allowed to expand or be secured by the socket member in its deformed state, eliminating the need to return to a rigid configuration and maintaining both passage ease and retention strength.
Data Source
AI summary
An infection-preventing gastrostomy catheter kit to be used in the gastrostomy, which can pass an intragastric retainer of a catheter easily and reliably through an infection-preventing sheath by an easy maneuver, and which can reduce the diameter of the infection-preventing sheath.The catheter kit comprises: a gastrostomy catheter 20 including a flexible, hollow PEG tube 21 reinforced with filaments 24, an deformable intragastric retainer 23 positioned at the trailing end of the PEG tube 21, and a tapered member 22 positioned at the leading end of the PEG tube 21 for retaining the leading end portion 40a of a guide wire 40 inserted from a leading end hole 22a thereof; and an infection-preventing sheath 1 including a flexible, hollow tubular body 2, and a socket member having a socket 4 positioned at the trailing end of the tubular body 2 for retaining the intragastric retainer 23, and pins 5, thereby removably sheathing the gastrostomy catheter 20. The gastrostomy catheter 20 may be provided with a housing sheath 60 for deforming and housing the intragastric retainer 23.