Enteric-Coated Capsule for Targeted Intestinal Drug Release

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Solution Overview

Problem

Current methods for administering N-methylol transfer agents like Taurolidine and Taurultam for neoplastic and infectious diseases require long-term intravenous infusions, which are inconvenient and pose risks, limiting the effectiveness of oral treatment options.

Innovation Solution

Development of an oral pharmaceutical composition using an enteric-coated capsule that releases the N-methylol transfer agent at a pH of 5.4 to 6.5, allowing targeted delivery to the duodenum or jejunum, where it enters the bloodstream, achieving effective blood concentrations without the need for invasive administration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If intravenous infusion is used to administer N-methylol transfer agents, then sufficient blood concentrations can be achieved for effective treatment, but the treatment becomes inconvenient and poses risks for long-term administration

Engineering Contradiction:
Improveblood concentration adequacyVSAvoidadministration convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The invention segments the administration process by using oral capsules containing N-methylol transfer agents that are released in the intestine rather than requiring continuous intravenous infusion. This divides the treatment into discrete oral doses that can be taken at home, eliminating the need for hospital-based IV infrastructure while maintaining therapeutic blood concentrations.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention introduces an intermediary mechanism - an orally administered capsule with enteric coating - that mediates between the need for sufficient blood concentration and administration convenience. The capsule protects the agent during gastric passage and enables controlled release in the intestine, serving as a bridge between oral and intravenous administration modes.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Quantity of substance

If large volumes of Taurolidine solution are administered intravenously, then adequate drug concentration can be achieved, but the large volume administration causes practical difficulties and lacks electrolytes

Engineering Contradiction:
Improvedrug concentrationVSAvoidadministration complexity
Core Design Contradiction:
Quantity of substanceVSDevice complexity

Solution Approach 1:

The invention changes the administration parameters from large-volume intravenous infusion to small-volume oral capsule administration. The enteric-coated capsule delivers the drug in a compact form that is released in the intestine, eliminating the need for large fluid volumes and associated infrastructure while maintaining adequate drug concentration through controlled release.

Inventive Principle:
Principle #35Parameter changes

3Ease of operation

If oral administration is used to avoid invasive procedures, then convenience is improved, but achieving sufficient blood concentrations becomes difficult

Engineering Contradiction:
Improveadministration convenienceVSAvoidblood concentration adequacy
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The invention applies preliminary action by pre-coating the capsule with enteric material before administration. This preliminary protective coating ensures the capsule survives gastric conditions intact and releases the agent in the intestine, where absorption occurs more efficiently. This pre-prepared state enables oral administration to reliably achieve sufficient blood concentrations without requiring invasive procedures.

Inventive Principle:
Principle #10Preliminary action

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 oral administration of Taurolidine and Taurultam to achieve serum concentrations sufficient for treating neoplastic diseases, reducing tumor growth and inhibiting angiogenesis, while avoiding gastric degradation and intestinal flora interaction, thus providing a more convenient and effective treatment option.

Implementation Method 1

the targeted release carrier releases the N-methylol transfer agent at a pH value of 5.4 to 6.5

Methodology Applied
Scientific EffectpH-dependent release:

Implementation Method 2

an enteric coated hard gelatine capsule or an enteric coated hydroxypropylmethyl cellulose (HPMC) capsule

Methodology Applied
Scientific EffectEnteric coating: Coatings

Implementation Method 3

said agent enters the subject's bloodstream through said duodenum or jejunum

Methodology Applied
Scientific EffectAbsorption: Absorption (physical)

Implementation Method 4

which involves a cross-linking reaction with the cell wall of bacteria and with tumor cells

Methodology Applied
Scientific EffectCross-linking reaction: Chemical Bonding

Data Source

PatentEP2575783B1Methods and compositions for oral pharmaceutical therapy
Publication Date: 2017.01.11 GEISTLICH PHARMA
  • EP2575783B1 patent drawing
  • EP2575783B1 patent drawing
  • EP2575783B1 patent drawing

AI summary

It now has been found that oral administration of pharmaceutical agents, including N-methylol transfer agents such as Taurolidine may be used to provide efficacious blood plasma concentration of the agents for treatment of diseases by providing release of the active agent into the duodenum or jejunum of a patient and/or at a pH of about 5.4 to about 6.5. Embodiments of the invention therefore provide oral dosage forms, compositions and methods for administration of pharmaceutical agents to the duodenum or jejunum of a patient, and/or which release at a pH of about 5.4 to about 6.5.