# US 9,408,586 B2 · Blood vessel sizing device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,408,586 B2 - Document ID: US9408586B2 - Status: Granted - Kind: B2 - Application number: 14/607,221 - Filed: 2015-01-28 - Published: 2015-05-21 - Granted: 2016-08-09 - Earliest claimed: 2012-03-22 - Assignees: Sizer LLC - Applicants: Sizer LLC - Inventors: Richard B. Park - Web page: https://patentgrep.com/patent/US9408586B2 ## CPC - A61B 5/1075: {for measuring dimensions by non-invasive methods, e.g. for determining thickness of tissue layer (A61B8/0858 takes precedence)} - A61B 5/02007: {Evaluating blood vessel condition, e.g. elasticity, compliance} - A61B 6/504: {for diagnosis of blood vessels, e.g. by angiography} - A61B 6/5217: {extracting a diagnostic or physiological parameter from medical diagnostic data} - A61B 90/39: {Markers, e.g. radio-opaque or breast lesions markers} - A61B 90/96: using barcodes - G16H 50/30: for calculating health indices; for individual health risk assessment - A61B 2090/3966: {Radiopaque markers visible in an X-ray image} - A61B 2090/3991: {having specific anchoring means to fixate the marker to the tissue, e.g. hooks} - A61B 2562/164: the sensor is mounted in or on a conformable substrate or carrier - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - G16H: HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA ## Abstract Medical devices and methods for determining the size of blood vessels are disclosed. In an embodiment, a blood vessel sizing device includes a marker configured for placement on the skin of a patient. The marker defines a substantially circular shape and includes a plurality of radiopaque substantially concentric circles. In an embodiment, a blood vessel sizing method includes placing a marker having a plurality of substantially concentric circles on the skin of a patient, imaging a blood vessel of the patient and the marker, and comparing the imaged blood vessel to the imaged circles to determine the blood vessel size. ## Claims ### Claim 1 A blood vessel sizing device comprising: a marker structure configured for placement on the skin of a patient, comprising: a plurality of concentric circle shapes, each having a first thickness between an inside diameter and an outside diameter comprising a radiopaque material such that the first thickness of a first concentric circle of the plurality of concentric circle shapes, when viewed in an X-ray image, is uniformly viewable, wherein the first thickness of a second concentric circle of the plurality of concentric circle shapes comprises a radiopaque material at one of the inside diameter and an outside diameter and a radiolucent material at the other of the inside diameter and the outside diameter such that a selected concentric circle shape has a second thickness, less than the first thickness, when viewed in an X-ray image; and a plurality of distinct geometric shape symbols, each representing a diameter of a different one of the of the plurality of circle shapes, and further having a first thickness comprising a radiopaque material configured to be uniformly viewable when viewed in an X-ray image. ### Claim 2 (depends on 1) The blood vessel sizing device of claim 1, wherein the marker structure further comprises: an adhesive for adhering the marker to the skin of the patient. ### Claim 3 (depends on 1) The blood vessel sizing device of claim 1, wherein the plurality of distinct geometric shape symbols comprise at least one of: a triangle, a circle, a square and a pentagon. ### Claim 4 (depends on 1) The blood vessel sizing device of claim 1, wherein the plurality of distinct geometric shape symbols are numbers. ### Claim 5 (depends on 1) The blood vessel sizing device of claim 1, wherein the diameters of the plurality of concentric circle shapes range from about 2 mm to about 20 mm. ### Claim 6 (depends on 1) The blood vessel sizing device of claim 1, wherein there are at least four concentric circle shapes, which have diameters of about 4 mm, 6 mm, 8 mm, and 10 mm, respectively. ### Claim 7 (depends on 1) The blood vessel sizing device of claim 1, wherein there are at least four concentric circle shapes, which have diameters of about 14 mm, 16 mm, 18 mm, and 20 mm, respectively. ### Claim 8 (depends on 1) The blood vessel sizing device of claim 1, wherein the shape the marker structure defines is substantially circular. ### Claim 9 (depends on 1) The blood vessel sizing device of claim 1, wherein the shape the marker structure defines is circular. ### Claim 10 A blood vessel sizing method comprising: placing a marker structure having a plurality of substantially concentric circle shapes on the skin of a patient, each of the plurality of concentric circle shapes having a first thickness between an inside diameter and an outside diameter, wherein the first thickness of a first concentric circle comprises a radiopaque material such that the thickness of a first concentric circle shape of the plurality of concentric circle shapes, when viewed in an X-ray image, is viewable and wherein the first thickness of a second concentric circle of the plurality of concentric circle shapes comprises a radiopaque material at the inside diameter and a radiolucent material at the outside diameter such a the selected concentric circle shape has a second thickness, less than the first thickness, when viewed in an X-ray image, the placed marker further comprising: a plurality of distinct geometric shape symbols, each representing a diameter of a different concentric circle shape of the plurality of circle shapes, and further having a first thickness comprising a radiopaque material configured to be viewable when viewed in an X-ray image; imaging the blood vessel and the marker structure using X-ray radiation, wherein the selected concentric circle shape has a second thickness, less than the first thickness, when viewed in a resulting X-ray image; measuring the imaged blood vessel using a mechanical calipers; and comparing, using the mechanical calipers, the measured blood vessel to the imaged diameters of the plurality of substantially concentric circle shapes. ### Claim 11 (depends on 10) The blood vessel sizing method of claim 10, wherein imaging the blood vessel and the marker structure includes using an angiogram. ### Claim 12 (depends on 10) The blood vessel sizing method of claim 10, wherein the marker structure includes a plurality of different radiopaque symbols, each of the plurality of different radiopaque symbols representing a diameter of one of the plurality of substantially concentric circle shapes. ### Claim 13 (depends on 12) The blood vessel sizing method of claim 12, wherein comparing, using the mechanical calipers, the imaged blood vessel to the imaged plurality of concentric circle shapes to determine the size of the blood vessel further comprises: measuring the imaged blood vessel; comparing the measured blood vessel to the imaged diameters of the plurality of radiopaque substantially concentric circle shapes; and reading the symbols. ### Claim 14 (depends on 10) The blood vessel sizing method of claim 10, wherein the shape the marker structure defines is substantially circular. ### Claim 15 (depends on 10) The blood vessel sizing method of claim 10, wherein the shape the marker structure defines is circular.