ABSORBABLE SPONGE WITH CONTRASTING AGENT

• US 20100029908A1
• Filed: 10/13/2009
• Published: 02/04/2010
• Est. Priority Date: 05/01/1998
• Status: Abandoned Application

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Sing, Eduardo Chi, Ashby, Mark
• Application Number:
  US12/578,088
• Publication Number:
  US 20100029908A1
• Time in Patent Office: Days
• US Class Current: 530/354
• CPC Class Codes: A61B 10/0233 Pointed or sharp biopsy instruments
• CPC Class Codes: A61B 17/0057 Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009
• CPC Class Codes: A61B 2017/00004 (bio)absorbable, (bio)resorbable, resorptive for implantable prostheses A61F2210/0004
• CPC Class Codes: A61B 2017/00637 for sealing trocar wounds through abdominal wall
• CPC Class Codes: A61B 2017/00654 entirely comprised between the two sides of the opening
• CPC Class Codes: A61B 2090/3933 Liquid markers
• CPC Class Codes: A61B 6/03 Computed tomography [CT] echo-tomography A61B8/14
• CPC Class Codes: A61B 6/481 involving the use of contrast agents
• CPC Class Codes: A61B 6/485 involving fluorescence X-ray imaging
• CPC Class Codes: A61B 8/481 involving the use of contrast agent, e.g. microbubbles introduced into the bloodstream analysis of echo signal exploiting properties of a contrast enhancer in devices for short-range imaging with acoustic waves G01S7/52039
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers
• CPC Class Codes: A61M 31/005 for contrast media

Abstract

An absorbable sponge containing a contrasting agent (e.g., radiopaque agent) that can be introduced to a biopsy tract or other puncture wound site is provided. The contrasting agent permits identification of the site by fluoroscopy or other imaging techniques.

Claims

1. A liquid permeable, absorbable gelatin sponge that is prepared by a process that comprises:

(a) preparing an aqueous gelatin solution;

(b) adding an organic solvent in the aqueous gelatin solution to form a second solution;

(c) incubating the second solution;

(d) forming a foam from the second solution wherein a contrasting agent is added to the second solution at any step prior to forming the foam; and

(e) drying the foam.