Separable Dome Pneumoperitoneum Device for Trocar Retention
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Solution Overview
Problem
Conventional medical devices for creating a temporary pneumoperitoneum are restrictive, complex, and costly, limiting the movement of medical apparatuses and increasing the risk of user error and device failure, while also requiring the removal of the trocar to remove the device from the surgical site.
Innovation Solution
A medical device with a separable dome structure that allows for positional adjustment and manipulation, enabling the removal of the device from the surgical site while leaving an indwelling trocar in place, featuring a rigid dome with a sealing element and septum for pressure management and a vacuum port for reduced pressure creation, facilitating clear access for additional medical apparatuses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional medical devices are used to create temporary pneumoperitoneum, then the device can maintain seal and pressure, but the device structure becomes complex and costly, limiting movement of medical apparatuses
Solution Approach 1:
The device is divided into separate components: a reusable hub assembly and a disposable dome assembly. The hub contains the complex sealing mechanisms and pressure control, while the dome is a simpler inflatable structure. This segmentation allows the complex parts to be refined for reliability while the simple parts remain easy to manufacture and dispose of.
Solution Approach 2:
The trocar is nested within the hub assembly, which is in turn connected to the dome assembly. The medical apparatus passes through the hub and into the dome, creating a nested configuration that allows movement while maintaining seals at each interface.
2Stress or pressure
If conventional medical devices are used, then pressure control is maintained, but the risk of user error and device failure increases due to complexity
Solution Approach 1:
The dome assembly includes self-sealing ports that automatically seal when the medical apparatus is inserted or removed. The inflatable seal automatically engages with the hub interface when the dome is attached, reducing the need for manual sealing operations and minimizing user error.
Solution Approach 2:
The device includes redundant sealing mechanisms and pressure regulation features built into the hub assembly before use. The pre-assembled hub with integrated seals and pressure control components provides a fail-safe design that prevents device failure even if individual components malfunction.
3Reliability
If conventional devices are used, then the pneumoperitoneum is maintained, but the trocar must be removed to remove the device from the surgical site
Solution Approach 1:
The separation of the hub and dome assemblies allows the dome to be detached and repositioned or removed without disturbing the trocar and medical apparatus that remain in place. The hub stays attached to the trocar, while the dome can be independently manipulated.
Solution Approach 2:
The dome assembly is extracted as a separate removable component from the hub assembly. This allows the dome to be taken out, repositioned, or replaced while the hub and trocar remain in place, enabling flexible device removal without disturbing the medical apparatus.
4Reliability
If conventional devices are used, then seal integrity is maintained, but additional medical apparatuses have limited access to the surgical site
Solution Approach 1:
The hub assembly is designed as a central hub with multiple ports and passages that accommodate various medical apparatuses. The nested configuration allows needles, catheters, and other apparatuses to pass through the hub and into the pneumoperitoneum space while the hub maintains seals around each apparatus.
Solution Approach 2:
The hub assembly serves multiple functions: it maintains the pneumoperitoneum seal, provides pressure control, accommodates the primary trocar, and allows passage of additional medical apparatuses through its multiple ports. This multi-functional design enhances versatility while maintaining seal integrity.
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 allows for flexible positioning and removal without disturbing medical apparatuses, reducing the complexity and cost of the device, minimizing user error and failure, and providing clear access to the surgical site, thereby enhancing surgical efficiency and safety.
Implementation Method 1
coupling a vacuum source to a vacuum port of the rigid dome; reducing a pressure on an interior of the rigid dome with the vacuum source to raise tissue at the surgical site at least partially into the interior of the rigid dome
Data Source
AI summary
Medical devices for use in the creation of a temporary pneumoperitoneum include a rigid dome, a sealing element, a retaining band, a septum, and a vacuum port. The rigid dome includes first and second dome sections. The first dome section engages with the second dome section to form the rigid dome. The retaining band applies a force to secure the first dome section relative to the second dome section. The sealing element seals the first and second dome sections. The septum engages at an aperture between the first and second dome sections. The vacuum port connects a vacuum source to the rigid dome to reduce a pressure on an interior of the rigid dome.