Swallowable Capsule Penetrates Intestinal Wall for Rapid Drug Absorption
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Solution Overview
Problem
Conventional drug delivery methods, such as oral administration, intravenous, and implantable pumps, face limitations like gastric irritation, drug degradation, and poor absorption, making it necessary to develop an improved method for delivering drugs, especially those requiring direct absorption into the bloodstream.
Innovation Solution
A swallowable drug delivery device that includes a capsule with a deployable mechanism and tissue penetrating members to deliver therapeutic agents directly into the intestinal wall, utilizing pH-sensitive coatings and actuators to ensure targeted and efficient drug release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If oral administration is used, then ease of operation is improved, but drug absorption speed and effectiveness deteriorate due to gastric irritation and poor absorption
Solution Approach 1:
The invention extracts the drug delivery site from the stomach (where degradation occurs) and targets it directly to the intestinal wall. The capsule device penetrates through the intestinal mucosa to deliver drugs directly into the intestinal wall tissue, bypassing the harmful gastric environment and achieving rapid absorption without oral administration drawbacks.
Solution Approach 2:
The capsule device serves as an intermediary carrier that protects the drug during transit through the GI tract and enables targeted delivery to the intestinal wall. This mediator facilitates direct drug insertion into the intestinal wall, bridging the gap between oral administration convenience and rapid drug absorption requirements.
2Productivity
If intravenous delivery is used, then drug absorption speed is improved, but device complexity and risk of infection increase due to needle sticks and IV line requirements
Solution Approach 1:
The capsule device is self-contained and self-actuating. It uses the body's natural pH differences between stomach and intestine as a trigger to automatically activate the penetration mechanism. The capsule penetrates and delivers the drug itself without requiring external needles, IV lines, or complex medical equipment, achieving rapid absorption with minimal device complexity.
Solution Approach 2:
The invention utilizes the pH parameter change that occurs naturally as the capsule moves from the acidic stomach environment to the less acidic intestinal environment. This pH change triggers the activation of the penetration mechanism, enabling automatic drug delivery into the intestinal wall without complex external control systems.
3Extent of automation
If implantable pumps are used, then drug delivery control is improved, but ease of operation deteriorates due to semi-permanent implantation requirements
Solution Approach 1:
The capsule is designed as a disposable, single-use device that is swallowed and completes its function within the body before being naturally excreted. This eliminates the need for semi-permanent implantation, surgical removal, or long-term maintenance while still providing controlled drug delivery through its automated penetration and release mechanism.
Solution Approach 2:
The capsule is pre-programmed with the penetration mechanism and drug delivery system before ingestion. The pH-sensitive activation and automated penetration actions are prepared in advance, allowing the device to autonomously control drug delivery timing and location without requiring post-implantation adjustment or intervention.
4Ease of operation
If conventional oral delivery is used, then ease of operation is improved, but drug stability deteriorates due to breakdown and degradation in the stomach
Solution Approach 1:
The invention extracts the drug from the harmful gastric environment where degradation occurs and delivers it directly to the intestinal wall. By bypassing the stomach entirely and inserting the drug directly into the intestinal tissue, the drug is protected from acidic degradation and enzymatic breakdown, maintaining its stability and efficacy.
Solution Approach 2:
The capsule shell and penetration mechanism serve as protective intermediaries that shield the drug from the harsh gastric environment during transit. This intermediary protection allows the drug to reach the intestinal wall in its stable, undegraded form, ready for immediate delivery into the tissue.
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
This approach enables faster and more efficient drug absorption into the bloodstream, potentially achieving maximum concentration levels 10 to 100 times faster than conventional oral forms and allowing for controlled, long-term release of therapeutic agents.
Implementation Method 1
The actuator is responsive to a condition in the small intestine such as pH so as to actuate delivery of the therapeutic agent preparation into the wall of the small intestine
Data Source
AI summary
Embodiments of the invention provide swallowable devices, preparations and methods for delivering drugs and other therapeutic agents within the GI tract. Many embodiments provide a swallowable device for delivering the agents. Particular embodiments provide a swallowable device such as a capsule for delivering drugs into the intestinal wall or other GI lumen. Embodiments also provide various drug preparations that are configured to be contained within the capsule, advanced from the capsule into the intestinal wall and degrade to release the drug into the bloodstream to produce a therapeutic effect. The preparation can be operably coupled to delivery means having a first configuration where the preparation is contained in the capsule and a second configuration where the preparation is advanced out of the capsule into the intestinal wall. Embodiments of the invention are particularly useful for the delivery of drugs which are poorly absorbed, tolerated and/or degraded within the GI tract.