Patterns for flow control and bioadhesion control
US-2017216543-A1 · Aug 3, 2017 · US
Antifouling urinary catheters with shape-memory topographic patterns
US10500370B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10500370-B2 |
| Application number | US-201615255241-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 2, 2016 |
| Priority date | Sep 2, 2015 |
| Publication date | Dec 10, 2019 |
| Grant date | Dec 10, 2019 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A system of topographic patterns for the prevention of bacterial adhesion and biofilm formation. The patterns may be provided on the surfaces of certain devices that are prone to bacterial adhesion and biofilm formation, such as urinary catheters. To reduce bacterial adhesion and biofilm formation, and to remove existing biofilms, the patterns are induced to transform from a first topography to a second topography. For example, the surface patterns may be formed from a shape memory polymer and then heated to transform the patterns from the first topography to the second topography to dislodge bacteria and prevent fouling.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of protecting against microbial biofilms, comprising the steps of: providing a medical device having a surface formed from a shape memory polymer that can transform from a first topography to a second topography that is different than said first topography, wherein the shape memory polymer is programmed to transform the first topography from having a hexagonal recessive pattern formed from individual elements, each of which singularly forms a hexagon, into the second topography having a flat surface; and triggering the transformation from the first topography to the second topography to dislodge any microbial biofilms adhered to the medical device. 2. The method of claim 1 , wherein the shape memory polymer transforms from said first topography to said second topography in response to a stimuli selected from the group consisting of heat, pH change, electric current, magnetism, moisture, and light. 3. The method of claim 2 , wherein the surface is on the inside of a catheter. 4. The method of claim 3 , wherein the shape memory polymer comprises t-butyl acrylate (tBA), poly (ethylene glycol)n dimethacrylate (PEGDMA), and photoinitiator 2,2-dimethoxy-2-phenylacetophenone (DMPA).
Assignees
Inventors
Classifications
provided with an antibacterial agent, e.g. by coating, residing in the polymer matrix or releasing an agent out of a reservoir · CPC title
Materials characterised by their function or physical properties {, e.g. lubricating compositions} · CPC title
having an electroactive polymer material, e.g. for steering purposes, for control of flexibility, for locking, for opening or closing · CPC title
obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title
- A61M25/0017Primary
specially adapted for long-term hygiene care, e.g. urethral or indwelling catheters to prevent infections · CPC title
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- What does patent US10500370B2 cover?
- A system of topographic patterns for the prevention of bacterial adhesion and biofilm formation. The patterns may be provided on the surfaces of certain devices that are prone to bacterial adhesion and biofilm formation, such as urinary catheters. To reduce bacterial adhesion and biofilm formation, and to remove existing biofilms, the patterns are induced to transform from a first topography to…
- Who is the assignee on this patent?
- Ren Dacheng, Gu Huan, Univ Syracuse
- What technology area does this patent fall under?
- Primary CPC classification A61M25/0017. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Dec 10 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).