Hip Joint Inflow Access Cannula with Tapered Design
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Solution Overview
Problem
Current access cannulas for hip joint surgeries are inefficient, causing tissue trauma and limiting access to deep surgical sites due to their design, which hampers minimally-invasive procedures and delays necessary treatments for hip joint pathologies.
Innovation Solution
A new inflow access cannula system with a distal end of smaller diameter and a proximal end of larger diameter, featuring an atraumatic tip and a compact design to minimize tissue trauma and increase access to deep surgical sites, along with an instrument adapter for fluid flow and a spacer to optimize instrument placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If current access cannulas are used for hip joint surgery, then access to the hip joint is established, but tissue trauma occurs and access to deep surgical sites is limited
Solution Approach 1:
The access cannula is divided into two distinct segments: a proximal segment with a larger diameter for easy insertion and a distal segment with a smaller diameter for precise access to deep surgical sites. This segmentation allows each portion to optimize its function, reducing tissue trauma during insertion while maintaining access capability at the distal end.
Solution Approach 2:
Different portions of the access cannula have different diameters tailored to their specific functional requirements. The proximal portion has a larger diameter for ease of insertion through tissue, while the distal portion has a smaller diameter to minimize damage to deep surgical structures. This local differentiation of dimensions optimizes both insertion ease and surgical access.
2Ease of manufacture
If conventional access cannulas are used, then initial access is achieved, but minimally-invasive procedures are hampered
Solution Approach 1:
The access cannula incorporates a flexible shaft that can be dynamically positioned and angled to reach deep surgical sites while maintaining a stable insertion path. This dynamic flexibility allows the cannula to adapt to anatomical variations and facilitate minimally-invasive procedures without compromising the ease of initial access creation.
Solution Approach 2:
The access cannula extends into the third dimension with its flexible shaft, allowing access to deep surgical sites that are not directly accessible through the insertion point. This dimensional extension enables minimally-invasive procedures by routing instruments through tissue planes rather than requiring direct access, thereby improving procedure efficiency while maintaining ease of initial access.
Data Source
AI summary
An inflow access cannula system for allowing an instrument to access a surgical site, the system including an inflow access cannula including distal and proximal ends and a central lumen extending therebetween, and an instrument adapter for releasable connection to the cannula, the adapter including a lumen communicating with the central lumen, the adapter further including a port and a fluid passageway connecting the port with the lumen of the adapter, and a spacer for spacing the proximal portion of the instrument from the distal end of the cannula, such that when the distal portion of an instrument extends within the central lumen and the proximal portion of the instrument is disposed in the lumen, in engagement with the spacer, fluid can flow into the port, along the fluid passageway, into the lumen and through the central lumen.