Published Technical Disclosure Archive

Enhanced Rotational Metering Pump for Wearable Insulin Infusion Patches

Publication ID: 24-11857756_0006_PTD
Published: November 07, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Rotational Metering Pump for Wearable Insulin Infusion Patches,” Published Technical Disclosure No. 24-11857756_0006_PTD, Published November 07, 2025, available at https://archive.pr1or.art/24-11857756_0006_PTD
This technical disclosure describes improvements that would be readily apparent to a Person Having Ordinary Skill In The Art (PHOSITA) when considered in combination with the foundational architecture disclosed in U.S. Patent No. 11,857,756.

Summary of the Inventive Concept

An advanced rotational metering pump system for wearable insulin infusion patches, featuring improved safety, efficiency, and user experience through innovative enhancements.

Background and Problem Solved

The original patent for the rotational metering pump for insulin patches, while effective, had limitations in terms of fluid pressure monitoring, user insulin sensitivity, temperature control, and redundant fluid paths. The new inventive concept addresses these limitations by introducing a pressure sensor, adaptive pump speed, temperature control, redundant fluid paths, and data analytics.

Detailed Description of the Inventive Concept

The enhanced rotational metering pump system comprises a fluid reservoir, cannula assembly, pressure sensor, and adaptive pump speed control. The pump speed is adjusted based on the user's insulin sensitivity profile, ensuring optimal insulin delivery. A temperature control mechanism maintains a consistent fluid temperature during delivery, while a redundant fluid path ensures continuous delivery in case of primary path failure. A data analytics module tracks and analyzes user insulin delivery patterns, providing valuable insights for improved disease management.

Novelty and Inventive Step

The new inventive concept's novelty lies in the integration of a pressure sensor, adaptive pump speed control, temperature control, redundant fluid paths, and data analytics, which collectively provide a safer, more efficient, and user-centric insulin delivery system. These enhancements are non-obvious compared to the original patent and demonstrate a significant inventive step.

Alternative Embodiments and Variations

Alternative embodiments may include varying the pressure sensor design, incorporating additional sensors for glucose monitoring, or using alternative materials for the fluid reservoir and cannula assembly. Variations may also include different temperature control mechanisms or data analytics algorithms to further optimize insulin delivery.

Potential Commercial Applications and Market

The enhanced rotational metering pump system has significant commercial potential in the wearable insulin infusion patch market, offering improved safety, efficiency, and user experience. The system can be marketed to pharmaceutical companies, medical device manufacturers, and healthcare providers, targeting patients with diabetes and other chronic diseases requiring insulin therapy.

CPC Classifications

SectionClassGroup
A A61 A61M5/14248
A A61 A61M5/1413
A A61 A61M5/1452
A A61 A61M5/14216
A A61 A61M5/172
F F04 F04B7/06
F F04 F04B19/025
A A61 A61M5/14276
A A61 A61M5/19
A A61 A61M5/31
A A61 A61M2005/14533
F F04 F04B7/0007
F F04 F04B7/0046
F F04 F04B9/047

Field of Art

Medical device engineering, specifically insulin delivery systems and wearable medical patch technologies, involving mechanical pump design, fluid metering, and medical device control systems

Person of Ordinary Skill (PHOSITA) Profile

A biomedical engineer with expertise in medical device design, fluid mechanics, mechanical engineering, and experience with insulin delivery systems, holding at least a master's degree with 3-5 years of specialized medical device development experience

Obviousness Rationale

A PHOSITA would recognize that the proposed enhancements represent predictable variations to the existing rotational metering pump design, utilizing standard engineering techniques to improve insulin delivery precision and patient safety. The additional features like pressure sensing, adaptive speed control, and data tracking are logical extensions of known medical device design principles applied to the existing pump architecture. These modifications represent incremental improvements that would be obvious to a skilled practitioner seeking to optimize insulin delivery technology.

Obvious Combinations & Variations

Source Patent Element
Rotational metering pump with manifold and sleeve design for precise fluid delivery
PTD Variation
Adding a pressure sensor to monitor and adjust pump fluid pressure during delivery
Obviousness Reasoning
Integrating pressure monitoring is a known technique in medical device design to ensure precise fluid metering, representing a predictable solution for improving pump performance
Source Patent Element
Pump mechanism with rotational sleeve and plunger
PTD Variation
Implementing adaptive pump speed control based on user insulin sensitivity profile
Obviousness Reasoning
Customizing delivery parameters based on individual patient characteristics is a standard approach in personalized medical device engineering, representing an obvious design optimization
Source Patent Element
Fluid reservoir and cannula assembly in insulin delivery system
PTD Variation
Incorporating temperature control mechanism to maintain consistent fluid temperature
Obviousness Reasoning
Temperature regulation is a well-known technique for maintaining medication stability, representing a finite and predictable solution for improving medication delivery systems
Source Patent Element
Rotational metering pump with single fluid path
PTD Variation
Adding a redundant fluid path to ensure continuous delivery
Obviousness Reasoning
Implementing backup systems is a standard reliability engineering practice, representing an obvious safety enhancement for critical medical devices
Source Patent Element
Insulin delivery patch with mechanical metering mechanism
PTD Variation
Integrating data analytics module to track and analyze insulin delivery patterns
Obviousness Reasoning
Adding data tracking and analysis capabilities is a predictable technological advancement in medical device design, representing an obvious extension of existing monitoring technologies
35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857756 and the disclosed technical variations, a person having ordinary skill in the art would find the proposed enhancements to the rotational metering pump system obvious and lacking inventive step. The combination of known medical device design techniques with the existing pump architecture fails to demonstrate non-obvious subject matter, thereby rendering potential claims covering these variations unpatentable under 35 U.S.C. Section 103.

Original Patent Information

Patent NumberUS 11,857,756
TitleRotational metering pump for insulin patch
Assignee(s)Becton, Dickinson and Company