Luer-to-Luer Tissue Morselizer with Transverse Blades
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for fat harvesting in cosmetic and plastic surgery fail to effectively resize larger fat particles into smaller, injectable sizes without damaging the beneficial stromal vascular fraction (SVF) or causing unnecessary skin damage, while ensuring the survival of fat particles until new blood supply is established.
Innovation Solution
A morselizer device with a hollow cylindrical structure featuring axially and radially hollow luer fittings and transverse blades that allow for atraumatic resizing of fat particles by transferring them through an axial liquid pathway, ensuring the preservation of the SVF and achieving the desired particle size for injection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional fat harvesting methods are used, then fat particles can be harvested, but larger fat particles cannot be effectively resized without damaging the stromal vascular fraction
Solution Approach 1:
The device segments the fat harvesting process into distinct functional zones: a harvesting section with larger diameter to capture fat particles, a resizing section with transverse blades to reduce particle size, and an injection section with smaller diameter to deliver resized particles. This segmentation allows each section to be optimized for its specific function while maintaining overall system integrity and SVF preservation.
Solution Approach 2:
The invention introduces a transverse dimension for particle resizing by incorporating transverse blades that cut across the axial flow path. This dimensional approach allows particles to be resized from larger dimensions (harvested state) to smaller dimensions (injection-ready state) without compromising the stromal vascular fraction, as the cutting action occurs perpendicular to the flow direction.
2Ease of operation
If fat particles are resized to smaller dimensions, then injectability is improved, but particle integrity and survival rate may be compromised
Solution Approach 1:
The device uses an axial liquid pathway as an intermediary medium to transport fat particles through the harvesting, resizing, and injection sections. This liquid medium allows particles to be gently carried through the transverse blades without direct mechanical contact that would cause damage, thereby maintaining particle integrity and survival rate while achieving the desired smaller size for injectability.
Solution Approach 2:
The invention replaces traditional mechanical compression or grinding methods with a transverse blade cutting mechanism that acts perpendicular to the axial flow. This substitution reduces mechanical stress on fat particles and their associated stromal vascular fraction, preserving cell viability while achieving the necessary size reduction for injection.
3Device complexity
If a single-purpose harvesting device is used, then device simplicity is maintained, but multi-functional capability (harvesting, resizing, injection) is limited
Solution Approach 1:
The device is designed as a universal fat grafting system that integrates three primary functions: harvesting fat particles through a larger diameter opening, resizing particles using transverse blades, and injecting resized particles through a smaller diameter opening. This multi-functional design eliminates the need for separate harvesting and injection devices, improving workflow efficiency while maintaining manageable device complexity through integrated architecture.
Solution Approach 2:
The device employs a nested structure where the transverse blades are positioned within the axial pathway, and the resizing section is contained within the overall cylindrical housing. The harvesting section, resizing section, and injection section are arranged concentrically along the axial direction, allowing compact integration of multiple functions within a single device structure.
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 the atraumatic resizing of fat particles, preserving the beneficial stromal vascular fraction and ensuring the survival of fat particles until they can be injected, thereby improving the efficacy of fat grafting procedures by maintaining the integrity and functionality of adipose-derived regenerative cells.
Implementation Method 1
one or more blades extending transversally across the inner diameter of the center section wherein (i) each blade is comprised of a plurality of ends, including a posterior end secured to at least the center wall section inner wall
Data Source
AI summary
A morselizer has a first end section with an axially and radially hollow luer fitting, a second end section with an axially and radially hollow luer fitting, a housing juxtaposed therebetween, a channel extending axially between the first end section and the second end section and through the housing providing an axial liquid pathway therein, and at least one blade disposed within the housing. Each end of the morselizer is attachable to a structure with a complimentarily sized luer fitting. In an embodiment, the morselizer facilitates atraumatic resizing of material through axial liquid transfer, by transferring material from a first structure attached to the first end section, thence through the channel, where material is resized by the blade, and through the second end section to a second structure attached to the second end section. The resized material may be suitable for injection, such as through a fine needle.