System for confocal imaging within dermal tissue

• US 8,121,670 B2
• Filed: 03/16/2005
• Issued: 02/21/2012
• Est. Priority Date: 10/18/1996
• Status: Expired due to Fees

• Current Assignee: Caliber Imaging & Diagnostics, Inc.
• Original Assignee: Lucid Inc.
• Inventors: Zavislan, James M.
• Primary Examiner(s): ROZANSKI, MICHAEL T
• Application Number:
  US11/081,181
• Publication Number:
  US 20050171441A1
• Time in Patent Office: 2,533 Days
• Field of Search: 600/109, 600/160, 600/175, 600/310, 600/344, 600/475, 600/407, 600/473, 600/476, 382/128, 128/915, 378/37, 378/62, 378/63, 378/195
• US Class Current: 600/476
• CPC Class Codes: A61B 5/0068 Confocal scanning
• CPC Class Codes: A61B 5/061 Determining position of a probe within the body employing means separate from the probe, e.g. sensing internal probe position employing impedance electrodes on the surface of the body A61B1/00158 takes precedence
• CPC Class Codes: A61B 5/441 Skin evaluation, e.g. for skin disorder diagnosis
• CPC Class Codes: A61B 5/444 Evaluating skin marks, e.g. mole, nevi, tumour, scar
• CPC Class Codes: A61B 5/445 Evaluating skin irritation or skin trauma, e.g. rash, eczema, wound, bed sore
• CPC Class Codes: A61B 5/6834 using vacuum
• CPC Class Codes: A61B 5/6835 Supports or holders, e.g., articulated arms
• CPC Class Codes: A61B 5/6842 by marking the skin
• CPC Class Codes: A61B 5/6843 Monitoring or controlling sensor contact pressure
• CPC Class Codes: A61B 5/704 Tables

Abstract

An improved system for confocal imaging within dermal tissue of a patient is provided which minimizes instability in confocal images by reducing the relative motion of the tissue with respect to the confocal imaging optics of the system. The system includes a mechanism for maintaining an area of skin tissue under stress by application of force at the edges of the area, and an imaging head coupled to this mechanism for imaging the stressed skin. The mechanism includes a mechanical structure, such as a platen, brace, or attachment, which both supports the imaging head of the system and applies stress to a limited surface area of the tissue to minimize skin motion during confocal imaging.

Claims

1. A system for stabilizing an imaging system to tissue comprising:

a device comprising a first member having an opening, and a second member coupled to said first member to be slidably movable following a curvature of said first member, and having an aperture; and

an imaging system attached to at least said second member to image in-vivo tissue through said opening and said aperture in which said aperture provides a view of the tissue to said imaging system through said opening during imaging of the tissue, wherein said first member has a surface adapted to approximate the curvature of a part of the body of a patient to be imaged by said imaging system when said first member is located upon the patient.

2. The system according to claim 1 wherein said aperture is provided by a material window.

3. The system according to claim 1 wherein said imaging system images a section within a volume of tissue.

4. The system brace according to claim 3 wherein said section is along one of a horizontal, vertical, or angular section through the tissue.

5. The system according to claim 1 wherein said imaging system is operative by confocal microscopy.

6. The system according to claim 1 wherein said imaging system has optics and said second member is moved with respect to said first member to position said aperture of said second member over an area of the tissue viewable through to said opening of said first member to said optics of said imaging system.

7. The system according to claim 1 wherein said aperture is smaller in size than said opening.

8. The system according to claim 1 wherein said imaging system optically forms images of one or more sections within a volume of the tissue.

9. A system for stabilizing an imaging system to tissue comprising:

a device comprising a first member having an opening, and a second member coupled to said first member to be movable with respect to said first member, and having an aperture;

an imaging system attached to at least said second member to image the tissue through said opening and said aperture in which said aperture provides a view of the tissue to said imaging system through said opening, wherein said first member has a surface adapted to approximate the curvature of a part of the body of a patient to be imaged by said imaging system when said first member is located upon the patient; and

one or more straps are adapted to be disposed over the part of the patient having the tissue to be imaged, and said one or more straps restrain at least said first member to the patient.

10. A device to stabilize an imaging apparatus upon a patient to image one or more tissue sections comprising:

a first lamination having a first curvature and providing a first surface with an opening; and

a second lamination having a second curvature which conforms to said first curvature and said second lamination provides a second surface with an aperture which enables viewing of in-vivo tissue via said opening of said first lamination when said first lamination is located upon a patient, wherein said second lamination is coupled to said first lamination to enable said second surface to be slidable following said first curvature of said first surface while said aperture enables viewing of the in-vivo tissue through said opening of said first lamination when said first lamination is located upon a patient, and said second lamination is attachable to an imaging apparatus.

11. The device according to claim 10 wherein said aperture provides a view of the tissue to the imaging apparatus when attached to said second lamination to enable the imaging apparatus to optically forms images of one or more sections within a volume of the tissue when said first lamination is located upon a patient.

12. The device according to claim 10 wherein at least one of said first and second laminations is adapted to conform to the part of the body of the patient having the tissue to be imaged.

13. The device according to claim 10 wherein said second lamination is moved with respect to said first lamination to position said aperture of said second lamination to view one area of the tissue and repositionable to view one or more other areas within said opening of said first lamination.

14. The device according to claim 10 wherein said aperture is smaller in size than said opening.

15. The device according to claim 10 wherein said first curvature is adapted to approximate the curvature of the patient when said device is located upon the patient.

16. A system for stabilizing an imaging apparatus upon a patient to image one or more tissue sections comprising:

a material window capable of being pressed against tissue to stress the tissue;

an objective lens for focusing illumination through said material window to the tissue and receiving returned illumination representative of a section of the tissue; and

a snout having said objective lens providing paths for illumination which is focused by said objective lens to the tissue and for returned illumination from the tissue in which said paths each substantially share an entirety of said objective lens, wherein said snout is adapted to extend in a direction toward the tissue and said window is disposed adjacent said snout, wherein said snout is part of a housing having at least a source of illumination to said objective lens, and said snout and said window are separable components from each other and are components of different devices.

17. The system according to claim 16 wherein said housing further comprises an imaging apparatus having said source providing said illumination which is focused by said objective lens through said material window, and for producing an image of said section of the stressed tissue using said returned illumination.

18. The system according to claim 17 wherein said focused illumination represents scanned focused illumination of a focal spot through the tissue.

19. The system according to claim 17 wherein said imaging apparatus is operative by confocal microscopy.

20. The system according to claim 17 wherein said imaging apparatus optically forms images of one or more sections within a volume of the tissue.