Multi-Channel Endoscopic Biopsy Sheath with Hyperbolic Cross-Section
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Solution Overview
Problem
Existing endoscopic instruments face challenges in safely and completely removing flat polyps during polypectomy procedures due to their physical nature, requiring improved biopsy instruments that can effectively grasp and remove these polyps without causing harm.
Innovation Solution
A multiple-channel endoscopic biopsy sheath with a hyperbolic cross-section and separate channels for instruments like forceps and snare, allowing independent advancement and retraction, and featuring an open edge for easier instrument exchange and manipulation, facilitating the removal of polyps through a working channel of an endoscopic device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple instruments are used for polyp removal, then the effectiveness and safety of polypectomy is improved, but the complexity of the device increases
Solution Approach 1:
The biopsy sheath is divided into multiple independent channels (first channel, second channel, third channel) that can accommodate different instruments simultaneously. Each channel is optimized for specific instrument types, allowing coordinated use of forceps, snares, and other polypectomy instruments through a single sheath structure.
Solution Approach 2:
The multi-channel biopsy sheath serves multiple functions by accommodating various instruments for different polypectomy techniques. The sheath can simultaneously support cold biopsy forceps, hot biopsy forceps with cautery, and snare instruments, making it a universal platform for diverse polyp removal methods.
2Ease of operation
If the sheath diameter is reduced to fit within working channels, then the ease of insertion is improved, but the size of accommodable instruments is limited
Solution Approach 1:
The sheath utilizes a three-dimensional multi-channel configuration where channels are arranged in different spatial dimensions and orientations. This allows instruments of varying sizes to be accommodated in different channels simultaneously, with each channel optimized for specific instrument dimensions while maintaining a compact overall sheath profile.
Solution Approach 2:
Multiple channels are nested within the sheath structure, with each channel providing a pathway for instruments of appropriate size. The nested configuration allows larger instruments to be housed in dedicated channels while the overall sheath maintains a diameter suitable for insertion through standard working channels.
3Ease of operation
If separate channels are used for different instruments, then the control and flexibility during procedure is improved, but the device complexity increases
Solution Approach 1:
The sheath is segmented into distinct channels that provide independent pathways for different instruments. Each channel can be controlled separately, allowing the operator to advance, retract, and manipulate instruments independently while maintaining overall procedural control through the unified sheath structure.
Data Source
AI summary
Embodiments of the invention provide devices and associated methods for use when performing endoscopic procedures. According to one aspect, a sheath positionable within a working channel of an endoscopic device, and adapted for receiving one or more instruments, is provided. The sheath can include a first channel and a second channel, the first channel and the second channel extending at least partially along a length of the sheath, wherein at least one of the first channel or the second channel includes an open edge open along at least part of the length of the respective channel.