Patent · US Expired

Endoscopy tissue stain

US6599496B2 · kind B2 · utility

12Cited by

1References

22Claims

0Family size

Assignee

Chek-Med Systems, Inc. · US

Inventors

Frank C. Carter · Wormleysburg, US
Frank W. Jackson · Mechanicsburg, US
Robert Whalen · Paris, FR

Key dates

Filing date	Jun 28, 2001
Grant date	Jul 29, 2003
Priority date	—
Expiry date	Jun 28, 2021

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K49/006
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

An endoscopic stain is provided that includes a carbon pigment and a suspending/viscosity-increasing agent in a pharmaceutically acceptable delivery vehicle, wherein the carbon pigment has a total level of polycyclic aromatic hydrocarbons (PAH) of not greater than 0.5 ppm. Methods of staining an internal site utilizing the stain of the invention and kits that include the stain of the invention are also provided.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.