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Devices and methods for cosmetic skin resurfacing

a skin resurfacing and cosmetic technology, applied in the field of cosmetic skin resurfacing devices and methods, can solve the problems of limiting the applicability of surgery to certain treatment sites, inconvenient, and expensive, and the method is generally less effective than surgical methods

Pending Publication Date: 2022-04-28
CYTRELLIS BIOSYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is designed to have a high coring rate, meaning the percentage of times the needle is used to remove tissue from the treatment area compared to the number of times it is used. This is achieved by maximizing the force needed to remove tissue and minimizing the force needed to keep the needle in place. The force needed to remove tissue is determined by the connection between the tissue and its surrounding tissue. By applying a pressure difference across the needle (such as a vacuum), the force needed to remove tissue is increased, resulting in a higher coring rate.

Problems solved by technology

Conventional surgical therapies (e.g., a face lift, brow lift, or breast lift) can be effective but are invasive, inconvenient, and expensive, while scarring limits the applicability of surgery to certain treatment sites.
Although minimally invasive methods are available, such methods are generally less effective than surgical methods.
For example, methods using energy sources (e.g., laser, non-coherent light, radiofrequency, and ultrasound) can be effective at improving the architecture and texture of the skin but are less effective at tightening the skin or reducing skin laxity.
In addition, tissue ablative methods that create micro-ablations with photo-thermal energy can generate a coagulation zone in tissue that interferes with closure of the ablation zones, thereby inhibiting tissue tightening.
These methods also require longer patient healing times due to the biological reparative response to coagulated and dead tissue during the remodeling process.
Also, laser ablation depth is typically limited by the depth of the laser beam focus.
Finally, dermal fillers, such as hyaluronic acid, can be injected in the dermal layer to smooth out wrinkles and improve contours, but such fillers do not directly tighten or reduce laxity of the skin.

Method used

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  • Devices and methods for cosmetic skin resurfacing
  • Devices and methods for cosmetic skin resurfacing
  • Devices and methods for cosmetic skin resurfacing

Examples

Experimental program
Comparison scheme
Effect test

example 1

of Skin Laxity in the Face Using a Hollow Needle with Two Prongs

[0214]An apparatus of the invention may be used to administer treatment to the skin of a subject. Treatment may be performed outside of an operating room environment, thereby minimizing the cost of treatment.

[0215]The apparatus used for treatment of the subject may be any of those described herein. For example, the apparatus may be that shown in any one of FIGS. 16D-16I (e.g., apparatus 163 including actuation unit 151, needle assembly 10, and cover 161). For treatment of skin laxity in the face, a metallic, hollow needle with two prongs each having a bevel angle α of 30 degrees may be selected for application to a treatment area of about 4 mm by about 9 mm. The selected hollow needle may be a 24 gauge needle and may be affixed to the needle assembly of the apparatus at its proximal end (e.g., away from the needle tip). The tip of each prong of the hollow needle may be a sharp point (e.g., sharp point 51 as illustrated ...

example 2

of Skin Laxity in the Face Using a Hollow Needle Having an Edge

[0218]The hollow needle used in Example 1 may be replaced with a hollow needle having an edge. For example, the hollow needle used to treat skin laxity in the face may be a metallic, hollow needle with two prongs each having a bevel angle α of 30 degrees. The hollow needle may be a 24 gauge needle and may be affixed to the needle assembly of the apparatus at its proximal end (e.g., away from the needle tip). The tip of each prong of the hollow needle may be an edge (e.g., edge 52 as illustrated in FIG. 5B). The hollow needle may be configured to penetrate about 0.5 mm to about 2 mm (e.g., about 1 mm) into the skin and to remove an areal fraction of about 0.03 of skin tissue.

example 3

of Skin Laxity in the Face Using a Hollow Needle Having a Flat Tip

[0219]The hollow needle used in Example 1 may be replaced with a hollow needle having a flat tip (e.g., a two dimensional flat tip). For example, the hollow needle used to treat skin laxity in the face may be a metallic, hollow needle with two prongs each having a bevel angle α of 30 degrees. The hollow needle may be a 24 gauge needle and may be affixed to the needle assembly of the apparatus at its proximal end (e.g., away from the needle tip). The tip of each prong of the hollow needle may be a flat tip (e.g., flat tip 53 as illustrated in FIG. 5C). The hollow needle may be configured to penetrate about 0.5 mm to about 2 mm (e.g., about 1 mm) into the skin and to remove an areal fraction of about 0.03 of skin tissue.

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PUM

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Abstract

Disclosed herein are apparatuses, kits, and methods for treating skin, such as skin tightening, e.g., reducing skin laxity, for treating conditions that would benefit from tissue area or volume reduction, skin restoration, skin tightening, skin lifting, and / or skin repositioning, and / or for generally improving skin function or appearance. Such apparatuses, kits, and methods include one or more hollow needles each having at least one prong and a mechanism for removing skin tissue portion(s) from the hollow needle(s).

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation application of U.S. Ser. No. 16 / 090,034 filed Sep. 28, 2018, which is a national stage application of PCT Application No. PCT / US2017 / 024752, filed on Mar. 29, 2017, and claims priority to U.S. Provisional Patent Application No. 62 / 314,748, filed on Mar. 29, 2016, all of which are incorporated herein in their entirety by reference thereto.BACKGROUND OF THE INVENTION[0002]In aesthetic medicine, elimination of excess tissue and / or skin laxity is an important concern that affects more than 25% of the U.S. population. Conventional surgical therapies (e.g., a face lift, brow lift, or breast lift) can be effective but are invasive, inconvenient, and expensive, while scarring limits the applicability of surgery to certain treatment sites.[0003]Although minimally invasive methods are available, such methods are generally less effective than surgical methods. For example, methods using energy sources (e.g., laser,...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B17/34A61B17/20A61B17/3205
CPCA61B17/3417A61B2017/00761A61B17/32053A61B17/205A61B2017/00792A61B17/3205A61B17/34A61B2017/320064A61B2017/3454A61B2217/005
Inventor LEVINSON, DOUGLASGINGGEN, ALECDIMATTEO, KRISTIANBRIK, ROBERTLIZARDI, JOSEANDERSON, NICHOLASBROCKMEIER, OIVIND
Owner CYTRELLIS BIOSYST
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