Negative-Pressure Tissue Interface for Intraoperative Hemostasis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current hemostatic methods for intraoperative bleeding, such as suction cannulas and cautery, are inefficient and can cause tissue damage, while coagulative agents are costly and impractical for all tissues, particularly neural tissue, necessitating a hands-free, adaptable, and ergonomic solution for surgical field control.
Innovation Solution
A medical fluid removal apparatus with a flexible tissue interface membrane and a suction compliant body, adaptable to multi-contoured tissue surfaces, uses negative pressure to induce hemostasis without precise localization, featuring a perimeter balloon and adjustable pressure control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a suction cannula is used for hemostasis, then fluid removal is achieved, but active manipulation is required and tissue injury can occur
Solution Approach 1:
The device divides the suction interface into two functional segments: a rigid suction cannula for fluid removal and a flexible perimeter balloon for contactless adhesion. This segmentation allows the rigid portion to perform suction efficiently while the flexible balloon provides hands-free positioning without requiring active manipulation during the procedure.
Solution Approach 2:
The flexible perimeter balloon acts as an intermediary between the rigid suction cannula and the tissue surface. It provides a compliant contact interface that adheres to the tissue contour, enabling hands-free localization and support while the rigid cannula performs the suction function through its lumen.
2Reliability
If cautery is used for hemostasis, then bleeding control is achieved, but precise bleed visualization is required and it is not applicable to all tissues
Solution Approach 1:
The device provides a universal hemostatic solution that works across different tissue types and bleeding locations. The flexible perimeter balloon can adapt to various tissue contours (brain, liver, lung, etc.) while the integrated suction cannula removes fluid and controls bleeding without requiring tissue-specific techniques or precise visualization, making it applicable to all surgical fields.
3Reliability
If lap pads are used for localization, then bleeding control is achieved, but localization precision is poor
Solution Approach 1:
The perimeter balloon is designed with a curved, flexible structure that conforms to the three-dimensional contour of the tissue surface. This curved geometry provides precise localization by adapting to the specific shape of the surgical field, whereas flat lap pads cannot achieve the same level of precision on contoured surfaces.
4Reliability
If coagulative agents are used for hemostasis, then bleeding control is achieved, but cost increases and retrieval is required
Solution Approach 1:
The device is designed as a self-contained, reusable system where the flexible perimeter balloon and rigid suction cannula work together as an integrated unit. The device serves itself by providing both localization and fluid removal functions without requiring external coagulative agents, reducing cost and eliminating the need for retrieval of consumable hemostatic materials.
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
Enables effective, hands-free bleeding control during surgical procedures, particularly in intracranial tumor resections, by adapting to tissue contours and improving surgical ergonomics and efficacy while minimizing tissue damage and cost.
Implementation Method 1
suctioning the fluid beneath the tissue interface membrane or at least partially around the tissue interface membrane and through a suction compliant body of the medical fluid removal apparatus
Data Source
AI summary
A medical fluid removal apparatus and method uses negative pressure intraoperatively for the induction of hemostasis. The medical fluid removal apparatus includes a tissue interface membrane, a suction compliant body coupled to the tissue interface membrane, and an adapter configured for attachment to a negative pressure source. The suction compliant body is coupled between the tissue interface membrane and the adapter, and the tissue interface membrane is more flexible than the suction compliant body. The method of removing fluid during a medical procedure can include the steps of placing a tissue interface membrane of a medical fluid removal apparatus against a tissue of a patient, and suctioning the fluid beneath the tissue interface membrane or at least partially around the tissue interface membrane and through a suction compliant body of the medical fluid removal apparatus.