← Back to Patent Explorer
EP0763371A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Method and apparatus for skin rejuvenation and wrinkle smoothing

Assignee: ESC Medical Systems Ltd
•
Filing: 1996-09-11
•
Granted: —
•
Expires: 2016-09-11
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A method and apparatus for treating skin includes applying pulsed light to the skin to heat and shrinking collagen within the skin, thereby reviving the elasticity of the collagen and of the skin. The epidermis and outer layers of the skin may be protected by cooling with a transparent substance, such as ice or gel, to the skin. The temperature distribution within the skin is controlled by controlling the delay between the time the coolant is applied, and the time the light is applied, by controlling the pulse duration and applying multiple pulses, and by filtering the light and controlling the radiation spectrum, preferably, the spectrum includes the light having a wavelength in the range of 600-1200nm. The pulsed light may be incoherent, such as that produced by a flashlamp (301), or coherent, such as that produced by a Nd(Yag) laser or a ruby laser, and may be directed to the skin using a flexible or rigid light guide (305). Also, a method and apparatus for cutaneous resurfacing including directing Er:YAG laser light to the skin. The light may be pulsed, preferably with a delay of about 0.5-10msec between pulses. In one embodiment the pulses have energy fluences of preferably about 100J/cm 2 .

Inventors

  • 👤 Shimon Eckhouse
  • 👤 Michael Kreindel

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 14:10
CPC Classifications
A; A61; A61N; A61N5/00; A61N5/10; A61B; A61B18/00; A61B18/18; A61B18/20; A61B18/203; A61B17/00; A61B2017/00017; A61B2017/00137; A61B2017/00154; A61B2017/00172; A61B2017/00743; A61B2017/00747; A61B2017/00761; A61B2018/00005; A61B2018/00011; A61B2018/00023; A61B2018/00315; A61B2018/00452; A61B2018/0047; A61B2018/1807; A61N5/06; A61N2005/0658; A61N2005/0659

Claims Analysis

Total Claims: 17
Claim 1
Independent Claim 72 words
An apparatus for treating a region of skin comprising a pulsed light source (301), a housing (306) in which the light source is disposed, wherein the housing (306) includes an aperture suitable for directing the light to the region of skin, and characterised in that the pulsed light source is capable of heating and shrinking collagen in the region of skin, thereby reviving the elasticity of the collagen and of the skin.
Claim 2
Dependent Claim 38 words
An apparatus as claimed in claim 1 further including a timing circuit coupled to the pulsed light source, adapted to indicate when a delay time has passed after an application of a cooling substance to the skin region.
Claim 3
Dependent Claim 33 words
An apparatus as claimed in claim 1 or 2 further comprising a microprocessor (309) coupled to the pulsed light source for determining the delay time in response to a selected skin temperature profile.
Claim 4
Dependent Claim 44 words
An apparatus as claimed in claim 2 or claim 3 when appended to claim 2 further comprising a means for reducing the temperature of the cooling substance, wherein the cooling means is disposed to provide a signal indicative of cooling to the timing circuit.
Claim 5
Independent Claim 57 words
An apparatus as claimed in any one of claims 1 to 4 further comprising a pulse formation circuit and a pulse duration input, wherein the pulse duration circuit is coupled to the pulsed light source and is adapted to control the duration of pulses emitted by the pulsed light source in response to the pulse duration input.
Claim 6
Independent Claim 22 words
An apparatus as claimed in any one of claims 1 to 5 wherein the pulsed light source includes a noncoherent light source.
Claim 7
Independent Claim 43 words
An apparatus as claimed in any one of claims 1 to 6 further including a filter (303, 304) disposed adjacent to the aperture, wherein a temperature distribution within the skin is controlled in response to a radiation spectrum produced by filtering the light.
Claim 8
Independent Claim 23 words
An apparatus as claimed in any one of claims 1 to 7 further including a light guide (305) disposed adjacent to the aperture.
Claim 9
Independent Claim 40 words
An apparatus as claimed in any one of claims 5 to 8 further including a pulse delay circuit adapted to produce a delay in the range of 0.5-10msec between successive pulses of light emitted by the pulsed light source pulses.
Claim 10
Independent Claim 31 words
An apparatus as claimed in any one of claims 1 to 9 wherein the light source is adapted to provide pulses having energy fluences on the order of 100J/cm 2 .
Claim 11
Dependent Claim 31 words
A cosmetic treatment of a region of skin comprising the steps of applying pulsed light, heating collagen and shrinking collagen, thereby reviving the elasticity of the collagen and of the skin.
Claim 12
Dependent Claim 32 words
A cosmetic treatment as claimed in claim 11 further comprising the step of protecting the epidermis and outer layers of the skin by cooling the epidermis and outer layers of the skin.
Claim 13
Dependent Claim 36 words
A cosmetic treatment as claimed in claim 12 in which the step of cooling includes the step of applying a transparent substance having a temperature less than an ambient temperature, to the region of the skin.
Claim 14
Dependent Claim 36 words
A cosmetic treatment as claimed in claim 13 further including the step of controlling a delay time between the application of the substance and the application of light, to control the temperature distribution within the skin.
Claim 15
Dependent Claim 34 words
A cosmetic treatment as claimed in any one of claims 11 to 14 further comprising the steps of controlling a pulse duration and applying multiple pulses to control a temperature distribution within the skin.
Claim 16
Dependent Claim 29 words
A cosmetic treatment as claimed in any one of claims 11 to 15 wherein the step of applying pulsed light includes the step of pulsing a noncoherent light source.
Claim 17
Dependent Claim 34 words
A cosmetic treatment as claimed in any one of claims 11 to 16 further including the step of controlling the radiation spectrum by filtering the light to control a temperature distribution within the skin.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag