Hemostatic Patch Moisture Protection via Polymeric Bag
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Solution Overview
Problem
Surgical patches, particularly hemostatic patches, are moisture-sensitive and require protection from ambient or interstitial moisture during minimally invasive surgeries to prevent premature reaction, which is challenging in existing application methods.
Innovation Solution
A method and apparatus involving a polymeric bag containing a surgical patch, specifically a hemostatic patch with first and second hydrogel precursors applied to a substrate, is used for laparoscopic transfer and application within a body cavity, utilizing a deployment device with a drive rod and spring to deploy the patch while maintaining moisture resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the surgical patch is applied in the form it is packaged during open surgery, then the application is simple and direct, but the patch is exposed to ambient moisture causing premature reaction
Solution Approach 1:
The surgical patch is nested within a polymeric bag that is inserted into the body cavity through a laparoscopic deployment device. The bag protects the patch from moisture during transport and deployment, and is subsequently removed or degraded, allowing the patch to function without premature moisture exposure.
Solution Approach 2:
The polymeric bag acts as an intermediary protective barrier between the moisture-sensitive surgical patch and the ambient moisture in the body cavity. This intermediary allows the patch to be delivered and positioned before being exposed to physiological fluids.
2Reliability
If the patch is protected from moisture during transport, then premature reaction is prevented, but the device complexity increases due to packaging requirements
Solution Approach 1:
A thin, flexible polymeric bag is used to encapsulate the surgical patch. This thin-film packaging provides moisture protection while remaining flexible enough to be inserted through a laparoscopic deployment device and conform to the body cavity geometry.
Solution Approach 2:
The polymeric bag serves multiple functions: it protects the patch from moisture during storage and transport, facilitates laparoscopic delivery through its flexibility and size, and can be removed or degraded after deployment. This multi-functionality reduces the need for separate packaging components.
3Adaptability or versatility
If a laparoscopic deployment device is used to transfer the patch, then minimally invasive surgery is enabled, but the device complexity and operational difficulty increase
Solution Approach 1:
The laparoscopic deployment device utilizes a dynamic spring-loaded mechanism that automatically propels the polymeric bag containing the surgical patch into the body cavity. This dynamic system simplifies the deployment process compared to static or manually-operated mechanisms.
Solution Approach 2:
The deployment device is designed to automatically advance and release the polymeric bag through the use of a spring mechanism that self-actuates upon insertion, reducing the need for complex manual manipulation or additional actuation systems by the surgeon.
4Reliability
If the polymeric bag is removed after deployment, then the patch can function properly, but the procedure time increases
Solution Approach 1:
The polymeric bag is designed as a temporary protective enclosure that is discarded after serving its purpose of moisture protection during delivery. The bag is removed or left to degrade in the body cavity, allowing the surgical patch to function without interference.
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 hemostasis at the surgical site by protecting the patch from moisture until deployment, allowing the hydrogel precursors to react and form a biocompatible cross-linked material, providing both hemostatic and anti-adhesive properties within minutes of application.
Implementation Method 1
A method and apparatus involving a polymeric bag containing a surgical patch, specifically a hemostatic patch with first and second hydrogel precursors applied to a substrate, is used for laparoscopic transfer and application within a body cavity
Implementation Method 2
a surgical patch with first and second hydrogel precursors applied to a substrate... allowing the hydrogel precursors to react and form a biocompatible cross-linked material
Implementation Method 3
allowing the hydrogel precursors to react and form a biocompatible cross-linked material
Implementation Method 4
an apparatus involving a polymeric bag containing a surgical patch... utilizing a deployment device with a drive rod and spring to deploy the patch
Data Source
AI summary
The present disclosure includes systems and a method for in situ application of a surgical patch during minimally invasive surgery. The method includes the steps of inserting a surgical patch into a bag; transferring a polymeric bag containing a hemostatic patch into a body cavity; removing the surgical patch from the polymeric bag while the polymeric bag is within the body cavity; and applying the surgical patch to a tissue within the body cavity.