Flexible Web Member for Hollow Organ Perforation Closure
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Solution Overview
Problem
Existing surgical procedures for closing perforations in hollow internal organs during trans-organ surgery face challenges in achieving a fluid-tight closure, especially when large chunks of material need to be removed or when multiple instruments are used, leading to difficulties in finding sufficient space and effectively sealing the organ wall.
Innovation Solution
A surgical device comprising an elongate tube with a flexible web member that expands from a collapsed to an expanded configuration using shape-memory material and an adhesive layer, which is activated by energy to securely attach to the organ wall, allowing for effective closure of perforations without adhering to the inner mucosal membrane.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional surgical methods are used to close perforations in hollow internal organs, then the surgical procedure can be performed, but achieving a fluid-tight closure is difficult and trauma to the patient is greater
Solution Approach 1:
The patent employs a flexible membrane or patch that can be deployed to cover the perforation in the hollow internal organ. This flexible film structure conforms to the organ's surface and provides a reliable barrier to achieve fluid-tight closure while minimizing trauma to the patient's tissue.
Solution Approach 2:
The closure device is designed with a nested structure where the membrane or patch is contained within a delivery catheter or sheath. The device is inserted through natural orifices or small access points, then deployed inside the organ to close the perforation, allowing minimally invasive access while achieving effective closure.
2Adaptability or versatility
If multiple instruments are used during trans-organ surgery, then various surgical operations can be performed, but finding sufficient space for instrument manipulation becomes difficult
Solution Approach 1:
The closure device is designed to work with various surgical instruments and can be used in different trans-organ surgical procedures. The universal design allows the same closure mechanism to be applied regardless of the specific surgical operation being performed, whether it involves removing large chunks of material or other complex maneuvers.
Solution Approach 2:
The device system is divided into separate functional components including the closure membrane, delivery catheter, and deployment mechanism. This segmentation allows each component to be optimized for its specific function while working together as an integrated system, enabling versatile surgical applications without requiring multiple complete instrument sets.
3Productivity
If large chunks of material are removed during intra-abdominal surgery, then the surgical objective can be achieved, but closing the resulting perforation becomes more difficult
Solution Approach 1:
The closure membrane is designed with adjustable parameters including size, shape, and deployment configuration. The membrane can be selected or adjusted to match the size and geometry of the perforation created by removal of large material chunks, ensuring reliable closure regardless of the magnitude of the defect.
Solution Approach 2:
The closure device is prepared and positioned in advance through the delivery system before final deployment. The membrane is pre-formed and loaded into the catheter in a compact state, then deployed over the perforation site after the surgical objective is achieved, ensuring the closure mechanism is ready to seal even large defects immediately when needed.
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 device ensures a secure and fluid-tight closure of perforations in hollow internal organs by attaching the expanded web member to the outer surface of the organ wall, reducing trauma and shortening hospital convalescence stays, while being suitable for both rigid laparoscopy and flexible trans-organ surgery.
Implementation Method 1
a flexible web member that expands from a collapsed to an expanded configuration using shape-memory material
Implementation Method 2
an adhesive layer, which is activated by energy to securely attach to the organ wall
Data Source
AI summary
A surgical closure method utilizes a surgical device including an elongate tube, a flexible web member disposed in a collapsed configuration inside the tube, and a push rod disposed at least partially inside the tube for pushing the web member from the tube. A distal end portion of the tube is inserted through an opening or wound in a wall of a hollow body organ. The rod is pushed in a distal direction along the tube to eject the web member from the distal end of the tube. The ejected web member is expanded from the collapsed configuration to an expanded configuration. The expanded web member is placed in contact with the wall of the organ over the opening or wound. Subsequently the expanded web member is attached to the wall of the organ.