Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Microneedle devices and methods

A technology of microneedles and microneedle arrays, which is applied in the direction of microneedles, needles, and pharmaceutical formulations, and can solve the problems of expensive system manufacturing

Active Publication Date: 2013-12-04
3M INNOVATIVE PROPERTIES CO
View PDF8 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such systems are significantly more expensive to manufacture

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Microneedle devices and methods
  • Microneedle devices and methods
  • Microneedle devices and methods

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0171] Preparations containing lidocaine and tetracaine

[0172] The microneedle array uses a surface area of ​​about 1.27 cm 2 Class VI medical grade liquid crystal polymer (LCP) ( Injection molded from Ticona Plastics, Auburn Hills, Michigan, USA (3M Company, St. Paul, MN, USA). Each microneedle array is characterized by 316 quadrangular pyramid-shaped microneedles arranged in an octagonal pattern, where the height of the microneedles is nominally 500 microns, the aspect ratio is about 3:1, and the tips between adjacent microneedles reach to The tip distance is nominally 550 microns.

[0173]Using the dip coating method, a mixture of 30% dextran (Pharmacosmos, Holbaek, Denmark), 20% lidocaine hydrochloride (Sigma, St. Louis, Missouri, USA) was used. Company (Sigma, St.Louis, MO)) and tetracaine hydrochloride 10% (Spectrum Chemical & Laboratory Products, New Brunswick, NJ, U.S.A. (Spectrum Chemical & Laboratory Products, New Brunswick, NJ)) & Laboratory Products (Spect...

example 2

[0184] Preparations containing prilocaine and tetracaine

[0185] The microneedle array uses a surface area of ​​about 1.27 cm 2 Class VI medical grade liquid crystal polymer (LCP) ( MT1300 was obtained from Ticona Plastics, Auburn Hills, Michigan, USA and was injection molded (3M Company, St. Paul, MN, USA). Each microneedle array is characterized by 316 quadrangular pyramid-shaped microneedles arranged in an octagonal pattern, where the height of the microneedles is nominally 500 microns, the aspect ratio is about 3:1, and the tips between adjacent microneedles reach to The tip distance is nominally 550 microns.

[0186] Using the dip coating method, a mixture of 30% dextran (Pharmacosmos, Holbaek, Denmark), 12% prilocaine hydrochloride (New Browns, New Jersey, USA) was used. Wake City Spectrum Chemical & Laboratory Products Company (Spectrum Chemical & Laboratory Products, New Brunswick, NJ)) and 8% tetracaine hydrochloride (U.S. New Brunswick, New Jersey Spectrum Che...

example 3

[0197] Preparations containing lidocaine and bupivacaine

[0198] The microneedle array uses a surface area of ​​about 1.27 cm 2 Class VI medical grade liquid crystal polymer (LCP) ( MT1300 was obtained from Ticona Plastics, Auburn Hills, Michigan, USA and was injection molded (3M Company, St. Paul, MN, USA). Each microneedle array is characterized by 316 quadrangular pyramid-shaped microneedles arranged in an octagonal pattern, where the height of the microneedles is nominally 500 microns, the aspect ratio is about 3:1, and the tips between adjacent microneedles reach to The tip distance is nominally 550 microns.

[0199] Using the dip coating method, a mixture of 30% dextran (Pharmacosmos, Holbaek, Denmark), 30% lidocaine hydrochloride (Sigma, St. Louis, Missouri, USA) was used. Company (Sigma, St.Louis, MO)) and 1.7% bupivacaine hydrochloride (MP Biomedicals LLC, Solon, OH) onto the microneedle array. Prior to coating, microneedle arrays were cleaned with 70% isopro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A medical device, comprising: an array of microneedles, and a coating disposed on the microneedles, wherein the coating comprises: a local anesthetic selected from the group consisting of lidocaine, prilocaine, and a combination thereof; and a local anesthetic dose-extending component selected from the group consisting of tetracaine, ropivacaine, bupivacaine, procaine and a combination thereof; wherein the local anesthetic is present in an amount of at least 1 wt-% based upon total weight of solids in the coating, and wherein the local anesthetic and dose-extending component are in a non-eutectic weight ratio; a medical device, comprising an array of dissolvable microneedles, the microneedles comprising: a dissolvable matrix material; at least 1 wt-% of a local anesthetic selected from the group consisting of lidocaine, prilocaine, and a combination thereof; and a local anesthetic dose-extending component selected from the group consisting of tetracaine, ropivacaine, bupivacaine, procaine and a combination thereof; wherein the local anesthetic and dose-extending component are in a non-eutectic weight ratio, and wherein wt-% is based upon total weight of solids in all portions of the dissolvable microneedles which contain the local anesthetic; a method of extending a topically delivered local anesthetic dose in mammalian tissue using the devices; and methods of making the devices are provided.

Description

[0001] This application claims priority to US Provisional Application No. 61 / 449,988, filed March 7, 2011, which is hereby incorporated by reference in its entirety. Background technique [0002] Transdermal delivery of therapeutic agents (eg, drugs) through the skin to local tissues or the systemic circulatory system without piercing the skin, such as using transdermal patches, has been used successfully in some pharmaceuticals. This type of passive delivery involves diffusion of the agent across at least the stratum corneum, where the rate of diffusion through the stratum corneum can be rate limiting. [0003] Active delivery of therapeutic agents is practiced in certain instances to increase flux of the agent through the stratum corneum. In this case an external energy source (eg, electrical potential, ultrasound, or heat) is applied to aid transport of the agent through the stratum corneum or through the skin. [0004] The amount of drug delivered transdermally is also in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A61K9/00A61M37/00
CPCA61M2037/0046A61M37/0015A61M2037/0061A61K9/0021A61M2037/0023A61P23/02A61K9/00A61M37/00
Inventor 张莹克里斯滕·J·汉森埃米·S·德特曼
Owner 3M INNOVATIVE PROPERTIES CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com