Phototherapeutic needle patches and methods of manufacturing the same

Patent metadata

Field	Value
Publication number	US-11766548-B2
Application number	US-202117153969-A
Country	US
Kind code	B2
Filing date	Jan 21, 2021
Priority date	Jan 21, 2020
Publication date	Sep 26, 2023
Grant date	Sep 26, 2023

Abstract

Provided are phototherapeutic needle patches usable for phototherapy by using needle patches capable of injecting drugs or cosmetic substances to patients, and methods of manufacturing the same. A phototherapeutic needle patch may include a patch body attachable to skin of a patient, at least one microneedle protruding from the patch body, one end of the microneedle configured to deliver a drug through stratum corneum of the skin to inner tissues of the skin, and light grooves formed in a concave shape along a length direction of the microneedle in such a manner that therapeutic light radiated from a light source for phototherapy easily penetrates into the skin along the microneedle.

First claim

What is claimed is:

1. A phototherapeutic needle patch comprising:
a patch body configured to be attachable to skin of a patient;
at least one microneedle protruding from the patch body, one end of each of the at least one microneedle configured to deliver a drug through stratum corneum of the skin to inner tissues of the skin; and
light grooves in a concave shape disposed along a length direction of the at least one microneedle in such a manner that therapeutic light radiated from a light source for phototherapy penetrates into the skin along the at least one microneedle,
wherein the patch body comprises an adhesive sheet on a surface in contact with the skin so as to be adherable to the skin.

2. The phototherapeutic needle patch of claim 1 , wherein the light grooves are disposed in one or more of the at least one microneedle.

3. The phototherapeutic needle patch of claim 1 , wherein the at least one microneedle are gradually reduced in width from bases connected to the patch body toward tips in a pointed shape to penetrate through the stratum corneum of the skin.

4. The phototherapeutic needle patch of claim 1 , wherein the light grooves are formed by grooving the at least one microneedle in a thickness direction by using laser processing.

5. The phototherapeutic needle patch of claim 4 , wherein the light grooves have a width less than a depth to prevent tissues of the skin from filling the light grooves and blocking optical paths of the therapeutic light.

6. The phototherapeutic needle patch of claim 1 , wherein the light grooves contain the drug.

7. The phototherapeutic needle patch of claim 1 , wherein a plurality of microneedles is disposed along both sides of the patch body.

8. The phototherapeutic needle patch of claim 1 , wherein the at least one microneedle is formed by bending at least a part of the patch body at a side of a through hole that is disposed in the patch body.

9. A phototherapeutic needle patch comprising:
a patch body configured to be attachable to skin of a patient;
at least one microneedle protruding from the patch body, one end of each of the at least one microneedle configured to deliver a drug through stratum corneum of the skin to inner tissues of the skin;
light grooves in a concave shape disposed along a length direction of the at least one microneedle in such a manner that therapeutic light radiated from a light source for phototherapy penetrates into the skin along the at least one microneedle; and
slots formed by piercing portions of the patch body and portions of the at least one microneedle in a slot shape and connected to ends of the light grooves in such a manner that the therapeutic light reaches the light grooves formed in the at least one microneedle.

10. A phototherapeutic needle patch comprising:
a patch body configured to be attachable to skin of a patient;
at least one microneedle protruding from the patch body, one end of each of the at least one microneedle configured to deliver a drug through stratum corneum of the skin to inner tissues of the skin; and
light grooves in a concave shape disposed along a length direction of the at least one microneedle in such a manner that therapeutic light radiated from a light source for phototherapy penetrates into the skin along the at least one microneedle,
wherein the light grooves comprise protrusions protruding from both sides of the light grooves.

Assignees

• Korea Inst Sci & Tech
• Iucf Hyu Erica Campus

Inventors

• Ok Myoung-Ryul
• Kim So Yeon
• Joung Yoon Ki
• Kim Yu Chan
• Seok Hyun Kwang
• Han Hyung-Seop
• Jeon Hojeong
• Seo Hyunseon
• Kim Inho
• Park Kyoung Won
• Chung Yongwoo
• Kim Jaekyun

Classifications

• A61M37/0015 Primary

  by using microneedles · CPC title

• A61N5/062

  Photodynamic therapy, i.e. excitation of an agent · CPC title

• A61M2037/0023

  Drug applicators using microneedles · CPC title

• A61M2037/0053

  Methods for producing microneedles · CPC title

• A61N5/0616

  Skin treatment other than tanning · CPC title