Pointed Trocar Tip and Balloon PEG Kit for Stomach Entrance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for creating an artificial entrance to the stomach, such as the thread pull method and trocars with trocar sleeves, are laborious, risk injury to the stomach wall, and lead to complications like peristomal wound infections and high patient burden, due to the need for high pressure and blunt tip penetration.
Innovation Solution
A set with a trocar having a trocar tip with a point angle of 5° to 12°, designed as a cone or polygonal tip, and a PEG tube with a balloon made of flexible material, facilitating gradual penetration and reducing tension on the balloon, along with a trocar sleeve valve for maintaining air pressure and ensuring correct placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a blunt tip trocar is used to pierce the abdominal wall, then the penetration force is sufficient to break through the wall, but the stomach wall is at risk of injury and the procedure becomes laborious
Solution Approach 1:
The patent changes the geometric parameters of the trocar tip by introducing a pointed tip design with specific angles (30-60 degrees) instead of a blunt tip. This parameter change allows the trocar to penetrate the abdominal wall with less force while minimizing damage to the stomach wall, thereby resolving the contradiction between penetration capability and tissue protection.
Solution Approach 2:
The patent employs a curved or angled pointed tip geometry rather than a straight blunt tip. The curved surface of the pointed tip distributes the penetration force more effectively during insertion while reducing sudden impacts that could injure the stomach wall, thus achieving both adequate penetration and tissue protection.
2Force
If high pressure is applied during trocar insertion, then the piercing is achieved, but the stomach is pushed away and correct placement is compromised
Solution Approach 1:
The patent modifies the insertion approach by using a pointed tip that enables gradual penetration at lower pressures. This parameter change in the tip geometry allows the trocar to advance through the abdominal wall and stomach without requiring excessive force that would displace the stomach, thereby maintaining placement accuracy.
Solution Approach 2:
The patent incorporates a balloon at the distal end of the PEG tube that is inflated before insertion to create a guide and anchor. This preliminary action helps direct the trocar and PEG tube assembly through the correct path while maintaining stomach contact, preventing displacement during the insertion process.
3Ease of operation
If the thread pull method is used to insert the PEG tube, then the tube can be placed through the abdominal wall, but the procedure is laborious and carries high infection risk
Solution Approach 1:
The patent divides the insertion system into separate functional components: a trocar for piercing the abdominal wall, a PEG tube with balloon for gastric placement, and a valve mechanism for securing. This segmentation allows each component to perform its specific function efficiently, reducing the overall procedural complexity and infection risk compared to the thread pull method.
Solution Approach 2:
The patent introduces a valve mechanism as an intermediary between the trocar and the PEG tube. The valve allows controlled passage of the PEG tube through the abdominal wall while maintaining a closed system that reduces contamination risk, thereby facilitating easier insertion with lower infection risk.
4Reliability
If a trocar sleeve is used to protect the PEG tube during insertion, then the tube is protected, but the procedure becomes more complex and time-consuming
Solution Approach 1:
The patent merges the protective function with the structural design of the PEG tube itself by incorporating a balloon at the distal end. This integrated design provides protection and guidance without requiring a separate trocar sleeve, thereby maintaining reliability while reducing overall system complexity.
Solution Approach 2:
The patent extracts the protective function from a separate trocar sleeve component and integrates it directly into the PEG tube structure through the balloon. This extraction and integration simplifies the overall system by eliminating the need for additional protective sleeves while maintaining the protective function.
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 solution reduces the risk of injury and infection, simplifies the insertion process, and enhances the stability and positioning of the PEG tube, making the procedure more user-friendly and reducing complications.
Implementation Method 1
a balloon made of a flexible material which is not stretchable or at most has a low stretchability
Data Source
Figure 1(a)~1(e)
Figure 2(a)~2(e)
Figure 3(a)~3(e)
AI summary
Kit for providing an artificial stomach entrance, comprising a trocar having a trocar sleeve for insertion through the abdominal wall into the stomach and a PEG probe having a distal extension in the form of a balloon which can be inserted into the stomach, consisting of flexible material having at best low elasticity, having distally at least one opening and a proximal tubular region adjacent thereto, wherein a nutrition channel of a proximal nutrition opening of the tubular region extends through the tubular region to the at least one opening and the balloon is connected to a filling channel which extends along the tubular region to the proximal end and a filling opening has a closing device.