Blood vessel sizing device

• US 10,314,519 B2
• Filed: 06/24/2016
• Issued: 06/11/2019
• Est. Priority Date: 03/22/2012
• Status: Active Grant

• Current Assignee: Sizer LLC
• Original Assignee: Sizer LLC
• Inventors: Park, Richard B.
• Primary Examiner(s): Cattungal, Sanjay
• Application Number:
  US15/192,318
• Publication Number:
  US 20160302694A1
• Time in Patent Office: 1,082 Days
• Field of Search: 600407-430, 378162-165
• CPC Class Codes: A61B 2090/3966 Radiopaque markers visible in an X-ray image
• CPC Class Codes: A61B 2090/3991 having specific anchoring means to fixate the marker to the tissue, e.g. hooks
• CPC Class Codes: A61B 2560/0412 Low-profile patch shaped housings
• CPC Class Codes: A61B 5/02007 Evaluating blood vessel condition, e.g. elasticity, compliance
• CPC Class Codes: A61B 5/1075 for measuring dimensions by non-invasive methods, e.g. for determining thickness of tissue layer A61B8/0858 takes precedence
• CPC Class Codes: A61B 6/504 for diagnosis of blood vessels, e.g. by angiography
• CPC Class Codes: A61B 6/5217 extracting a diagnostic or physiological parameter from medical diagnostic data
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers
• CPC Class Codes: G16H 50/30 for calculating health indices; for individual health risk assessment

Abstract

Medical devices and methods for determining the size of blood vessels are disclosed. In one implementation, a blood vessel sizing device is configured for placement on an area of skin of a patient. The device includes a plurality of radiopaque concentric-circle elements. In one implementation, a blood vessel sizing method includes placing a marker having a plurality of concentric-circle elements on the skin of a patient, imaging a blood vessel of the patient and the device, and comparing the imaged blood vessel to the imaged circles to determine the blood vessel size, the concentric-circle elements allowing a determination of size without errors of parallax.

Claims

1. A sizing device, comprising:

a planar base structure having a front surface and a back surface, wherein the base structure is;

configured to be placed on a user'"'"'s skin to capture a target area of a patient having a passageway; and

substantially transparent to light with a wavelength in the visible spectrum;

a plurality of radiopaque, concentric-circle elements positioned on the front surface of the base structure;

a plurality of radiopaque symbols positioned on the base structure, wherein each symbol of the plurality of symbols represents a dimensional property of at least one of the concentric-circle elements, wherein the concentric-circle elements are configured to be detected by radiological imaging equipment to enable a determination of a size of the passageway without errors of parallax; and

an adhesive layer on the back surface of the device configured to adhere the device to an area of skin of the patient.

2. The sizing device of claim 1, further comprising:

a deformable structure having a front surface and a back surface, the front surface of the deformable structure adhered to the back surface of the base structure.

3. The sizing device of claim 2, further comprising:

a window, formed by the adhesion of the front surface of the deformable structure to a perimeter area of the back surface of the base structure.

4. The sizing device of claim 2, wherein the front surface of the deformable structure completely covers the back surface of the base structure.

5. The sizing device of claim 2, wherein the deformable structure comprises a sponge-like material.

6. The sizing device of claim 1, wherein the base structure comprises a polymeric material.

7. The sizing device of claim 1, further comprising:

a non-adhesive tab structure projecting from a side of the base structure, for facilitating facile removal of the device from the area of skin of the patient.

8. The sizing device of claim 1, wherein the device is uniquely identified by a radiopaque unique identifier on the base structure.

9. The sizing device of claim 8, wherein the radiopaque unique identifier comprises a machine-readable barcode.

10. The sizing device of claim 1, further comprising:

a radiopaque location marker on the front surface of the base structure that is distinct from the concentric-circle elements and the symbols configured to aid in locating the device in a captured radiological image.