System and method for detection of hematoma

• US 8,060,189 B2
• Filed: 05/05/2006
• Issued: 11/15/2011
• Est. Priority Date: 05/06/2005
• Status: Active Grant

• Current Assignee: InfraScan, Inc.
• Original Assignee: InfraScan, Inc.
• Inventors: Ben Dor, Baruch, Chance, Britton
• Primary Examiner(s): Mehta; Parikha
• Application Number:
  US11/919,851
• Publication Number:
  US 20090221919A1
• Time in Patent Office: 2,020 Days
• Field of Search: 600/310, 600/407, 600/473, 600475-477
• US Class Current: 600/476
• CPC Class Codes: A61B 5/0059 using light, e.g. diagnosis by transillumination, diascopy, fluorescence A61B5/0093, A61B5/1455, A61B5/02416 and A61B5/0261 take precedence
• CPC Class Codes: A61B 5/4076 Diagnosing or monitoring particular conditions of the nervous system A61B5/4821, A61B5/4824 take precedence

Abstract

A system and method for determining brain hematoma including a handheld device for emitting and detecting radiation with a removable light guide assembly. A method for determining a brain hematoma condition that includes determining optical density of various regions of the brain using near infrared spectroscopy.

Claims

1. A system for indicating a bilateral hematoma condition comprising:

memory storing at least one program; and

at least one processor communicatively coupled to the memory in which the at least one program when executed by the at least one processor, causes the at least one processor to;

determine an optical density associated with a plurality of brain locations on a right side of a patient'"'"'s head;

determine a first optical density difference between two of the plurality of brain locations on the right side of the patient'"'"'s head;

determine an optical density associated with a plurality of brain locations on a left side of the patient'"'"'s head;

determine a second optical density difference between two of the plurality of brain locations on the left side of the patient'"'"'s head; and

indicate bilateral hematoma based upon a comparison of the first optical density difference and the second optical density difference to a predetermined optical density difference range.

2. A system of indicating a hematoma condition comprising:

memory storing at least one program;

at least one processor communicatively coupled to the memory in which the at least one program, when executed by the at least one processor, causes the at least one processor to;

determine an optical density difference for at least one pair of contralateral head locations;

compare said optical density difference to a predetermined range of optical density differences; and

diagnose a hematoma condition in each of the contralateral head locations based upon a relationship between the optical density differences and the predetermined range of optical density differences and

a hand held probe having a base with at least one radiation detector, at least one light source and a removable light guide assembly having at least one detector light guide configured to align with the radiation detector and at least one source light guide configured to align with the light source, the light guide assembly being removably secured to the base.

3. A system for detection of a hematoma comprising:

a handheld probe having;

a base including;

a source of infrared light, and

a detector of infrared light, and

a light guide assembly secured to the base and including;

a source light guide that transmits infrared light from the source to a tissue region, and

a detector light guide that transmits at least a portion of the infrared light passing through the tissue region to the detector; and

a processor linked to the probe, configured to provide instructions to the probe and configured to process data transmitted by the probe, the processor having a display configured to indicate the presence of a hematoma based upon a characteristic of the infrared light passing through the tissue region.

4. The system of claim 3 wherein the probe and processor are housed in the base.

5. The system of claim 3 wherein the probe and the processor are linked with a wireless link.

6. The system of claim 3 wherein the base is contiguous with the source light guide and the detector light guide, and the light guide assembly is removeably secured to the base.

7. The system of claim 3 wherein the source light guide and the detector light guide are moveably attached to a cover of the light guide assembly, the source light guide and the detector light guide being spring biased relative to the cover in a direction away from the base.

8. The system of claim 7 wherein the source light guide and the detector light guide are independently moveable with respect to one another.

9. The system of claim 3 wherein the light guide assembly includes an opaque cover radially disposed around each of the source light guide and the detector light guide.

10. The system of claim 3 wherein the base includes a plurality of detectors of infrared light and the light guide assembly includes a plurality of detector light guides that each transmit at least a portion of the infrared light passing through the tissue region to one of the plurality of detectors.

11. A hand held device for use in detecting a hematoma comprising:

a base having;

at least one radiation detector, and

at least one light source; and

a light guide assembly removeably secured to the base by at least one of a friction fit between the base and the light guide assembly, a sealed securement between the base and the light guide assembly or one or more fasteners, the light guide assembly having;

at least one detector light guide configured to align with the radiation detector, and

at least one source light guide configured to align with the light source.

12. The hand held hematoma detection device of claim 11 wherein the light guide assembly further comprises at least one external support.

13. The hand held hematoma detection device of claim 11 wherein at least one of the detector light guides and the source light guides are configured to resiliently depress relative to the base.

14. The hand held hematoma detection device of claim 11 wherein the detector light guide and the source light guide protrude from a distal end of the light guide assembly and the light guide assembly further comprises a lip at the proximal end of the light guide assembly.

15. The hand held hematoma detection device of claim 11 wherein the light guide assembly includes a cover having:

a contiguous lip,

contiguous cladding radially disposed about the detector light guide,

contiguous cladding radially disposed about the source light guide,

a contiguous light dam associated with the light source, and

a contiguous light dam associated with the detector.