Rotating Infusion Pump Adhesive Mounting
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Solution Overview
Problem
Existing infusion devices attached to the skin face challenges with static unbalance and discomfort due to mechanical coupling with indwelling parts, limiting body-friendly alignment and carrying convenience, and require secure reattachment after temporary disconnection for water protection.
Innovation Solution
An infusion device with a rotatably mounted administering component that establishes a detachable connection with the catheter head using adhesives, allowing for adjustable alignment and enhanced attachment security through multiple adhesive points, and featuring patch-like adhesives with protective films and independent carrier foils for easy activation and replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the administering device is mechanically coupled to the catheter head with a fixed position, then the connection is stable and secure, but the wearing comfort and body-friendly alignment are limited due to static unbalance and tilting moments
Solution Approach 1:
The administering device is mounted rotatably on the guide body, enabling dynamic adjustment of the pump's orientation and position relative to the catheter head. This rotational freedom allows the wearer to align the device with body contours and gravity vectors, eliminating static unbalance issues while maintaining a secure mechanical connection through the rotatable mounting mechanism.
2Reliability
If the infusion device is permanently attached to the skin, then the connection is secure and reliable, but the device cannot be temporarily removed for water protection or exercise
Solution Approach 1:
The attachment system is divided into separate adhesive elements positioned at multiple locations on the guide body and catheter head. These segmented adhesives allow partial removal or adjustment of the device - the catheter head with its adhesives remains attached to the skin while the administering device can be detached and reattached, enabling temporary removal for water activities while maintaining secure attachment during normal use.
3Strength
If multiple adhesives are used to enhance attachment security, then the attachment strength is improved, but the complexity of the device increases
Solution Approach 1:
The attachment system uses multiple separate adhesive elements positioned at different locations on the guide body and catheter head rather than a single large adhesive. This segmentation provides distributed attachment points that collectively enhance security while keeping each individual adhesive element simple and manageable, avoiding excessive complexity in the overall device design.
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 comfortable, secure, and discreet wear with improved alignment options and easy temporary detachment for water protection, ensuring reliable adhesion and enhanced wearing comfort by distributing forces effectively across the skin surface.
Implementation Method 1
The attachment of the catheter head to the skin surface is carried out with adhesives, such as are known in the prior art for infusion sets.
Data Source
Figure 1~2
AI summary
An infusion device for administering a liquid medicinal substance into human or animal body tissue, the device comprising: a) a catheter head (1) with an underside (1a) prepared for attachment to body tissue; b) a cannula (1b) attached to the catheter head (1) and projecting from the underside, which is inserted into the body tissue; c) a guide body and connector (1c) on the upper side of the catheter head for establishing a detachable plug-in and fluid connection with a delivery device (2) provided for this purpose; d) a delivery device (2) which is rotatably mounted about the guide body and establishes a detachable connection with the catheter head; characterized in that e) the delivery device is prepared on the peripheral areas (2a) with at least one adhesive (3) which is suitable for fixing the delivery device to the body in a manner appropriate to the body and for wearing.