Flexible Cortical Cuff for Stable Subcortical Access
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Accessing and treating abnormalities in the brain, such as intracranial cerebral hematomas, glioblastomas, and metastases, is challenging due to the brain's delicate neural network and the risk of causing transient or permanent damage to blood vessels and nerves during surgical interventions.
Innovation Solution
A soft tissue cuff made of flexible elastomeric material, such as silicone, is used to protect the cortex by forming a ring-like shape that dissipates forces applied by surgical tools, minimizing direct contact and potential damage to surrounding tissues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If surgical tools are used to access brain abnormalities, then treatment effectiveness is improved, but trauma to delicate brain structures increases
Solution Approach 1:
The soft tissue cuff acts as an intermediary device between the surgical tool and the brain tissue. It provides a protective interface that allows surgical access while distributing mechanical forces, preventing direct contact between rigid surgical instruments and delicate neural structures, thereby reducing trauma while maintaining treatment effectiveness
Solution Approach 2:
The soft tissue cuff is constructed from flexible elastomeric material that conforms to the brain's surface topology. This flexible shell design allows the cuff to adapt to the curved cortical surface while providing protective cushioning, enabling surgical tools to operate through or alongside the cuff without directly traumatizing underlying neural structures
2Length of moving object
If rigid surgical access methods are used, then access to deep abnormalities is achieved, but damage to blood vessels and nerves increases
Solution Approach 1:
The flexible elastomeric cuff material allows the device to conform to and protect deep cortical structures while maintaining structural integrity. The flexibility enables the cuff to navigate complex brain topography and provide continuous protection along the access corridor, preventing rigid instrument contact with vulnerable blood vessels and nerves at various depths
Solution Approach 2:
The soft tissue cuff serves as a protective intermediary that extends along the surgical access path, creating a protective barrier between rigid surgical instruments and delicate neural structures at both superficial and deep levels, thereby enabling deep access while minimizing vascular and neural damage
3Measurement precision
If direct surgical contact is made with brain tissue, then precise treatment is achieved, but risk of transient or permanent deficits increases
Solution Approach 1:
The flexible elastomeric cuff conforms precisely to the brain's surface contours, providing accurate positioning and stabilization of surgical instruments while maintaining a protective buffer. This precise conformity enables accurate treatment delivery through the cuff's opening while the surrounding flexible material continues to protect adjacent neural structures from inadvertent trauma
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 soft tissue cuff provides a stable access corridor while reducing trauma to the brain's delicate structures by distributing applied forces, allowing for safer and more effective surgical procedures.
Implementation Method 1
A soft tissue cuff made of flexible elastomeric material, such as silicone, is used to protect the cortex by forming a ring-like shape that dissipates forces applied by surgical tools
Data Source
AI summary
A soft tissue cuff apparatus for subcortical surgery of the brain includes a cuff body. The cuff body forms a ring-like shape in an expanded position and is formed of a flexible material. The cuff body extends between a first lip and a second lip, thereby forming a concave outer periphery where, during use, the cuff body is configured to contact and cradle at least a portion of the cortex. The first and second lips are configured to form a hold on to the cortex such that the soft tissue cuff apparatus creates a stable fit within the cortex to form a surgical corridor and allow access to a surgical site under the cortex without subjecting the surrounding soft tissue to further manipulation.