Adjustable Converter Ports for Laparoscopic Retractions
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Solution Overview
Problem
Current laparoscopic surgery tools face challenges in accessing and removing excised tissues due to inconsistent port arrangements, which complicates the positioning of instruments and increases patient burden during multiple tissue excisions.
Innovation Solution
A medical treatment tool with a cylindrical retractor main body and a detachable converter that allows for adjustable installation angles, ensuring consistent port positioning relative to the retractor main body, thereby stabilizing operations and allowing versatile access to various organs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the converter is installed at equal angular intervals (120 degree intervals) like in Patent Document 1, then the port arrangement position is always constant, but the surgical access to various organs is limited and not versatile
Solution Approach 1:
The converter is designed with the ability to rotate around the retractor main body axis, allowing the port arrangement to be dynamically adjusted to different angular positions. This rotational capability enables the surgeon to select optimal port orientations for accessing different organs while maintaining consistent relative positioning among ports.
Solution Approach 2:
The invention adds rotational freedom around the retractor main body axis, transforming the port arrangement from a fixed two-dimensional pattern to a three-dimensional configurable system. This allows the same port configuration to serve multiple surgical scenarios by rotating to different angular orientations.
2Productivity
If the retractor main body is repeatedly attached and detached from the abdominal wall for taking out excised tissues, then the excised tissue can be removed, but the patient burden increases significantly
Solution Approach 1:
The system is divided into detachable components: the converter can be removed from the retractor main body, allowing the forceps or collection bag to be pulled through the large opening of the retractor main body without removing the retractor itself. This segmentation eliminates the need for repeated retractor attachment and detachment.
Solution Approach 2:
The retractor main body serves as an intermediary structure that remains in place during tissue removal. By keeping the retractor main body installed and only detaching the converter, it mediates between the need for tissue removal and the desire to minimize patient burden from repeated installations.
3Adaptability or versatility
If the converter is made detachable from the retractor main body, then large excised tissue can be removed through the retractor opening, but the device complexity increases
Solution Approach 1:
The attachment mechanism allows the converter to be dynamically attached and detached from the retractor main body. This dynamic connection provides the flexibility needed for tissue removal while using a relatively simple mechanical interface that does not overly complicate the device.
Data Source
AI summary
A medical treatment tool (10) includes a retractor main body (30) and a converter (20). The retractor main body (30) forms a cylindrical shape and is placed in an incision. The converter (20) is detachably installed on an opening end (32) of the retractor main body (30) and closes the opening end (32). Ports (22a) to (22d) through which treatment tools are respectively inserted into the retractor main body (30) are provided in a plurality of sites of the converter (20). The converter (20) can be installed on the opening end (32) at an installation angle which is selected from a plurality of angles. The positional relationships of the ports (22a) to (22d) with respect to the retractor main body (30) when the converter (20) is installed on the opening end (32) at the respective installation angles become different from each other.