Three-Part Proctoscope Fixation for Precise Rectal Positioning
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Solution Overview
Problem
Existing proctoscopes lack precise localization of the dentate line, difficulty in fixing to anal tissue, and susceptibility to unwanted rotations, leading to tissue torsion and impaired surgical vision.
Innovation Solution
A three-part proctoscope design comprising a fastening ring, surgical tube, and obturator, with features like transparent fastening ring for dentate line localization, bayonet locks for secure attachment, and multiple alignment markers for precise surgical positioning, allowing easy handling and reduced tissue damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a traditional proctoscope is used, then the device is simple in structure, but it cannot provide precise localization of the dentate line and allows unwanted rotations
Solution Approach 1:
The proctoscope is divided into three separate components: a fastening ring, a surgical tube, and an obturator. This segmentation allows each component to perform its specific function independently while collectively providing precise localization and preventing rotation, resolving the contradiction between simplicity and precision.
Solution Approach 2:
The surgical tube is inserted into the fastening ring, and the obturator is inserted into the surgical tube, creating a nested structure. This nesting arrangement provides precise localization features (alignment markers, transparent ring) while maintaining a compact overall structure that does not significantly increase complexity.
2Reliability
If a traditional proctoscope is used, then the device is easy to manufacture, but it cannot secure fixation to anal tissue during operation
Solution Approach 1:
The fastening ring is designed as a separate component with specific fastening holes that allow secure attachment to anal tissue using sutures or clips. This segmentation enables reliable fixation without requiring complex integration into the entire proctoscope structure, maintaining ease of manufacture.
Solution Approach 2:
The fastening ring acts as an intermediary element between the surgical tube and the anal tissue. It provides the fixation function through its specialized holes and structure, while the surgical tube remains relatively simple to manufacture, thus resolving the contradiction between reliability and ease of manufacture.
3Object-affected harmful factors
If a traditional proctoscope is used, then the device has a single structure, but it allows unwanted rotations causing tissue torsion
Solution Approach 1:
By separating the proctoscope into a fastening ring and a surgical tube, the design prevents rotation of the surgical tube relative to the fastening ring. The surgical tube can be rotated independently for positioning, while the fastening ring remains fixed to the tissue, preventing harmful tissue torsion without requiring complex constraint mechanisms.
Solution Approach 2:
The surgical tube is designed to be rotatable relative to the fastening ring, allowing dynamic positioning adjustment during surgery. This controlled rotatability enables the surgeon to position the surgical window optimally while preventing unwanted rotations that would cause tissue torsion, resolving the contradiction between preventing harm and maintaining operational flexibility.
4Ease of operation
If a traditional proctoscope is used, then the surgical window is fixed, but it impairs the surgeon's field of vision and work
Solution Approach 1:
The surgical tube can be rotated relative to the fastening ring to different positions, allowing the surgical window to be dynamically positioned according to the surgical needs. This rotatability improves the surgeon's field of vision and access to different areas of the rectum without requiring complex positioning mechanisms, as the rotation can be performed manually around the rigid fastening ring.
Data Source
AI summary
The invention, which relates to a proctoscope (1) and a method for using a proctoscope (1), is based on the object of providing an improved proctoscope (1) with which operative or surgical interventions in the area of the human rectum are made easier for the surgeon, whereby pain for the patient is reduced and whereby the proctoscope (1) is easy to handle and inexpensive to manufacture. This object is achieved in terms of the arrangement in that the fastening ring (2) has a plurality of position markers (10), a positioning aid (11) in the form of a 12 o'clock marking and a plurality of first locking elements (8), in that a second part is an operating tube (9) which can be arranged in an inner diameter of the fastening ring (2), which has a second locking element (17) which can be connected and fixed in a form-fitting manner to one of the first locking elements (8), which has a frustoconical or hemispherical, at least partially closed first end (12) and an surgical window (13), which is a rectangular opening arranged essentially along a cylinder wall of the operating tube (9), and in that a third part is an obturator (19) which can be introduced into the operating tube (9) and radially fixed, which has a first conical or hemispherical closed end (20) and which is inserted into the surgical tube (9) and fixed radially, completely closing the surgical window (13).