Granted Patent B2

US 11,638,558 · App. 17/027,972 · Granted May 2, 2023

Inventors: Ron Goldman (Cold Spring Harbor, NY); David Hunt (Cincinnati, OH); Mark Mock (Covington, KY); Graham Marshall (Shoreham, NY); Stephen P. Conlon (Glen Mills, PA); Robert Roth (Cincinnati, OH)

Assignee: AccuVein, Inc.

A61B5/489A61B5/0064A61B5/0075A61B5/0082A61B5/150748A61B2090/366A61B2562/0257A61M5/427

Abstract

Claims (34)

1. A vein imager configured to image subcutaneous veins of a target area on a patient, said vein imager comprising:

a miniature projection head, said miniature projection head comprising: means for imaging one or more images of subcutaneous veins of the target area and for projecting said one or more images onto the target area at one of a first intensity level and a second intensity level, said second level being higher than said first level; said miniature projection head comprising a housing configured to receive said means for imaging and projecting therein; said housing comprising: an opening configured to provide an optical path for said one or more images;

a proximity sensor, said proximity sensor configured to detect the target surface when within a threshold distance away from said vein imager; and

wherein said means for imaging and projecting is configured for said projecting at said first intensity level when said proximity sensor does not detect the target surface; and

wherein said means for imaging and projecting is configured for said projecting being at least at said second intensity level, when said proximity sensor detects the target surface.

2. The vein imager according to claim 1 , further comprising:

a computer memory, said computer memory configured to receive and store said one or more images from said means for imaging and projecting;

means for signal processing for determining when subcutaneous veins are present in said stored one or more images; and

wherein said means for imaging and projecting is further configured for said projecting only when veins are present in said stored one or more images.

3. The vein imager according to claim 2 , further comprising:

a comparator with an adjustable trip point;

wherein said means for signal processing is further configured for determining an intensity of the vein when veins are present in said stored one or more images; and

wherein said comparator compares said determined intensity of the veins to said adjustable trip point, and said means for imaging and projecting is further configured for said projecting only when said determined intensity is above said adjustable trip point.

4. The vein imager according to claim 3 ,

further comprising a dial; and

wherein said adjustable trip point is adjusted using said dial.

5. The vein imager according to claim 3 ,

further comprising:

a microprocessor; and

means for receiving a reflected signal representative of a surface topology of the target area;

wherein said means for imaging and projecting is further configured for multiplexing of said imaging and said projecting, each being in every other frame; and

wherein said microprocessor is further configured for removing said reflected surface signal of the target area from a next frame of said projecting using said received signal representative of surface topology of the target area within a current frame of said imaging.

6. The vein imager according to claim 5 , further comprising means for controlling gain.

7. The vein imager according to claim 6 , further comprising: means for supporting said miniature projection head permitting single-handed lifting and use of said vein imager during handheld imaging of the target area in a venipuncture procedure.

8. The vein imager according to claim 7 wherein means for imaging and projecting uses a wavelength in the range of 700 nm to 1000 nm for said imaging, and a visible red wavelength of light for said projecting.

9. The vein imager according to claim 6 , wherein said housing comprises: a hand-holdable housing configured to permit single-handed lifting and use of said vein imager during said handheld imaging of the target area in a venipuncture procedure.

10. The vein imager according to claim 9 , further comprising a cap; and wherein said hand-holdable housing comprises a holder configured to receive a battery; said cap configured to be releasably secured to said housing to provide access to said battery holder.

11. The vein imager according to claim 10 wherein means for imaging and projecting uses a wavelength in the range of 700 nm to 1000 nm for said imaging, and a visible red wavelength of light for said projecting.

12. A vein imager configured to image subcutaneous veins of a target area on a patient, said vein imager comprising:

a miniature projection head, said miniature projection head comprising: means for imaging one or more images of subcutaneous veins of the target area and for projecting said one or more images onto the target area at one of a first intensity level and a second intensity level, said second level being higher than said first level; said miniature projection head comprising a housing configured to receive said means for imaging and projecting therein; said housing comprising: an opening configured to provide an optical path for said one or more images;

means for supporting said miniature projection head and permitting single-handed lifting and use of said vein imager during handheld imaging of the target area in a venipuncture procedure;

means for detecting the target surface when within a threshold distance away from said vein imager; and

wherein said means for imaging and projecting is configured for said projecting at said first intensity level when said means for detecting the target surface is not within said threshold distance; and

wherein said means for imaging and projecting is configured for said projecting being at least at said second intensity level, when said means for detecting detects the target surface within said threshold distance.

Assignments (2)

Continuity (8)