Apparatus and method for pattern delivery of radiation and biological characteristic analysis

• US 7,233,817 B2
• Filed: 10/08/2003
• Issued: 06/19/2007
• Est. Priority Date: 11/01/2002
• Status: Expired due to Fees

• Current Assignee: Brian Yen
• Original Assignee: Brian Yen
• Inventors: Yen, Brian
• Primary Examiner(s): WINAKUR, ERIC FRANK
• Application Number:
  US10/682,655
• Publication Number:
  US 20040087844A1
• Time in Patent Office: 1,350 Days
• Field of Search: 600/310, 600/316, 600/318, 600/319, 600/320, 600/321, 600/322, 600/323, 600/340, 600/473, 600/476, 351/205, 351/206, 351/209
• US Class Current: 600/319
• CPC Class Codes: A61B 18/203 applying laser energy to the outside of the body
• CPC Class Codes: A61B 2017/00057 Light
• CPC Class Codes: A61B 2017/00769 Tattoo removal
• CPC Class Codes: A61B 2018/00452 Skin
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/1455 using optical sensors, e.g. spectral photometrical oximeters

Abstract

The present invention uses a high signal to noise ratio method and apparatus to analyze a characteristic of a biological object, such as blood glucose level. The method and apparatus can also have surgical applications, such as coagulation or ablation of a pattern on a biological object.

Claims

1. An apparatus for determining a characteristic of blood, compromising:

an imaging detector positioned to receive a first type of reflected radiation from an eye;

a radiation directing device capable of directing a second type of radiation onto a blood vessel of the eye;

a radiation detection assembly positioned to receive reflected radiation of the second type from the blood vessel; and

electronics, coupled to the imaging detector, radiation directing device and radiation detection assembly, capable of

identifying the blood vessel of the eye using reflected radiation data from the imaging detector,

adjusting the radiation directing device to direct the second type of radiation onto the identified blood vessel, and

determining a characteristic of the blood using reflected radiation data from the radiation detection assembly;

wherein the characteristic includes blood glucose levels.

2. The apparatus of claim 1, wherein the electronics identifies the blood vessel by processing the image based on color.

3. The apparatus of claim 1, wherein the radiation directing device includes a digital micro-mirror.

4. The apparatus of claim 1, wherein the second type of radiation includes near infrared radiation.

5. The apparatus of claim 1, wherein the first type of radiation includes blue or green light.

6. The apparatus of claim 1, wherein the electronics is further capable of tracking the identified blood vessel if the blood vessel is moving.

7. The apparatus of claim 1, wherein the radiation detection assembly includes a pixilated detector.

8. A system for determining a characteristic of blood, comprising:

a radiation directing engine capable of adjusting a radiation direction device such that emitted radiation is directed onto a blood vessel of an eye;

a feedback engine, communicatively coupled to the radiation directing engine, capable of determining the position of the blood vessel; and

an analysis engine, capable of determining a characteristic of the blood using radiation reflected from the blood vessel;

wherein the characteristic includes blood glucose levels.

9. The system of claim 8, further comprising a pattern selection engine, communicatively coupled to the feedback engine, capable of identifying the blood vessel of the eye.

10. The system of claim 8, wherein the feedback engine is further capable tracking the blood vessel if the blood vessel is moving.