US 12,318,219 B2
Vein scanner with limited photodiode FOV moving synchronously with scanned laser light
Fred Wood, Medford, NY (US); Vincent Luciano, Shoreham, NY (US); and Ron Goldman, Cold Spring Harbor, NY (US)
Assigned to ACCUVEIN INC., Medford, NY (US)
Filed by AccuVein Inc., Medford, NY (US)
Filed on Apr. 6, 2021, as Appl. No. 17/223,143.
Application 17/223,143 is a continuation of application No. 16/595,750, filed on Oct. 8, 2019, granted, now 11,826,166.
Application 16/595,750 is a continuation of application No. 15/678,355, filed on Aug. 16, 2017, granted, now 10,518,046, issued on Dec. 31, 2019.
Application 15/678,355 is a continuation of application No. 14/718,422, filed on May 21, 2015, granted, now 9,789,267, issued on Oct. 17, 2017.
Application 14/718,422 is a continuation of application No. 13/778,426, filed on Feb. 27, 2013, granted, now 9,061,109, issued on Jun. 2, 2015.
Application 13/778,426 is a continuation of application No. 12/804,506, filed on Jul. 22, 2010, granted, now 8,463,364, issued on Jun. 11, 2013.
Claims priority of provisional application 61/271,587, filed on Jul. 22, 2009.
Prior Publication US 2021/0275757 A1, Sep. 9, 2021
Int. Cl. A61B 5/00 (2006.01); A61M 5/42 (2006.01); H02J 7/00 (2006.01); A61B 90/00 (2016.01)
CPC A61B 5/489 (2013.01) [A61B 5/0062 (2013.01); A61B 5/7225 (2013.01); A61M 5/427 (2013.01); H02J 7/0044 (2013.01); A61B 2090/366 (2016.02); A61B 2560/0204 (2013.01); A61B 2560/0431 (2013.01); A61B 2560/0456 (2013.01); A61M 2205/18 (2013.01); A61M 2205/3306 (2013.01); A61M 2205/3606 (2013.01); A61M 2205/502 (2013.01); A61M 2210/12 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A vein imaging apparatus, said vein imaging apparatus configured to limit an image field of view (FOV) to exclude at least a portion of a target surface to image subcutaneous blood vessels beneath the target surface, said vein imaging apparatus comprising:
a laser configured to emit a beam of light at a first wavelength, directed in a first optical path;
a scanner, said scanner configured to direct said beam of light to form a spot of light on the target surface;
said scanner further configured to scan said beam of laser light to move said spot of light rapidly on the target surface to generate an image formed by differential amounts of absorption and reflection of said moving spot of light and an afterglow by surrounding tissue and subcutaneous blood vessels;
an optical detector;
an optical element, said optical element configured to bounce said beam of light from said first optical path onto a second optical path, and direct said beam of light at said scanner;
wherein said scanner directs said image at said first wavelength, received from the target surface, along said second optical path and to said optical detector;
wherein said optical detector is configured to receive said image at said first wavelength; and
a lens, said lens positioned between said optical detector and said optical element, wherein said lens is a focusing lens configured to limit a size of an image FOV of said optical detector to a portion of the target surface, wherein a size of said portion of the target surface for said limited FOV of said optical detector comprises: a size of said spot of laser light and at least a portion of said afterglow.