Endoscopic Hemostasis Closure Device with Spring-Actuated Clasp
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Solution Overview
Problem
Endoscopic procedures require multiple delivery systems for various instruments, limiting efficiency and versatility in performing diverse medical procedures due to each system being adapted for only one type of instrument.
Innovation Solution
A device with a handle, elongated sheath, and a clasp mechanism that allows for the deployment and retrieval of endoscopic instruments, utilizing a spring retention mechanism to open and close the clasp, enabling the delivery of multiple instruments through a single system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single delivery system is used to deliver multiple endoscopic instruments, then the versatility and efficiency of performing various endoscopic procedures is improved, but the device complexity increases due to the need for interchangeable instrument mechanisms
Solution Approach 1:
The endoscopic instrument is nested within the elongated sheath in a compact configuration during delivery. The sheath encompasses the instrument, allowing the instrument to be transported through the endoscope's working channel. Upon deployment, the instrument is released from the nested state and assumes its functional configuration, enabling a single delivery system to accommodate multiple instrument types through sequential loading and deployment.
Solution Approach 2:
The delivery system incorporates dynamic components including the spring retention mechanism that transitions between compressed and extended states, and the withdrawal mechanism that moves the sheath relative to the instrument. These dynamic elements enable the system to adapt between different operational states (delivery, deployment, retrieval), allowing versatility without requiring separate static systems for each procedure type.
2Productivity
If multiple delivery systems are used for different endoscopic instruments, then each system can be optimized for its specific instrument, but the number of systems required increases and efficiency decreases
Solution Approach 1:
The delivery system is designed as a universal platform that can accommodate multiple types of endoscopic instruments including hemostatic clips, bands, and other therapeutic devices. The elongated sheath and release mechanism are configured to work with different instrument geometries and deployment requirements, allowing a single multi-functional system to replace multiple specialized systems, thereby improving procedural efficiency and reducing the complexity of managing multiple delivery devices.
3Reliability
If the elongated sheath extends distally over the endoscopic device during insertion, then the instrument is protected during delivery, but the instrument cannot be deployed until the sheath is retracted
Solution Approach 1:
The spring retention mechanism is pre-loaded in a compressed state during instrument loading, storing potential energy that will automatically drive the release action. The withdrawal mechanism is pre-positioned to enable smooth sheath retraction. When deployment is required, these pre-prepared mechanisms actuate rapidly, minimizing the time between the decision to deploy and the actual instrument release, thus reducing loss of time while maintaining protection during the delivery phase.
Solution Approach 2:
The deployment process utilizes periodic action through the oscillating motion of the withdrawal mechanism that rhythmically retracts the sheath while the spring mechanism periodically releases the instrument. This periodic action allows for controlled, staged deployment that maintains protection until the optimal moment, then rapidly transitions to full deployment, balancing protection needs with deployment speed.
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
Enables the performance of various endoscopic procedures, such as clipping and hemostasis, with a single device, improving efficiency and versatility by allowing multiple instruments to be used through a single delivery system, particularly effective in procedures where existing systems are ineffective, like stopping bleeding in the stomach.
Implementation Method 1
a spring retention mechanism movable from a first resting configuration maintaining a first closed position of the clasp to a second compressed configuration moving the clasp to an open position
Data Source
AI summary
A device for inserting a medical apparatus into a living body includes a handle and an elongated sheath extending from the handle to a distal end configured for insertion to a target location in the living body in combination with a clasp positioned within a distal portion of the elongated sheath and configured to temporarily attach to an endoscopic device and a spring retention mechanism movable from a first resting configuration maintaining a first closed position of the clasp to a second compressed configuration moving the clasp to an open position. A withdrawal mechanism is movable from a first resting configuration in which the distal end of the elongated sheath extends distally over a distal end of the endoscopic device to a second retracted configuration in which the distal end of the elongated sheath is moved proximally of the distal end of the endoscopic device.