Dressing Device for use with a Cannula or a Catheter

Abstract

A method of protecting an insertion site permitting passage of a transcutaneous medical device into a patient. The method includes grasping a dressing device, positioning the dressing device over the insertion site, and adhering the dressing device to the patient over the insertion site. The dressing device may include a moisture vapor permeable backing, a polyurethane foam matrix, and an adhesive. The polyurethane foam matrix may be adhered to a first side of the moisture vapor permeable backing, and the adhesive may cover a second side of the moisture vapor permeable backing opposite of the first side. The polyurethane foam matrix can include a polyanhydroglucuronic acid or salt thereof in an amount to achieve a haemostatic effect, and chlorhexidine di-gluconate in an amount of 9% to 16% (w/w) to achieve an antimicrobial effect without adversely affecting wound healing.

What is claimed is: 
     
         1 . A method of protecting an insertion site permitting passage of a transcutaneous medical device into a patient, the method comprising:
 grasping a dressing device, the dressing device comprising:
 a moisture vapor permeable backing; 
 a polyurethane foam matrix adhered to a first side of the moisture vapor permeable backing, the polyurethane foam matrix comprising:
 a polyanhydroglucuronic acid or salt thereof in an amount to achieve a haemostatic effect; and 
 chlorhexidine di-gluconate in an amount of 9% to 16% (w/w) to achieve an antimicrobial effect without adversely affecting wound healing; and 
 
 an adhesive covering a second side of the moisture vapor permeable backing opposite of the first side; 
   positioning the dressing device over the insertion site with the second side facing toward the patient; and   adhering the dressing device to the patient over the insertion site.   
     
     
         2 . The method according to  claim 1 , wherein the dressing device includes a central aperture and a slit extending from the central aperture through an outer edge, the method further comprising positioning the central aperature around the transcutaneous medical device. 
     
     
         3 . The method according to  claim 2 , wherein the central aperture is a circular hole ranging in diameter from 0.1 mm to 10 mm. 
     
     
         4 . The method according to  claim 2 , wherein the central aperture is “x” shaped or “T” shaped. 
     
     
         5 . The method according to  claim 1 , wherein the polyanhydroglucuronic acid or salt is a salt in an amount from 3% to 20% (w/w). 
     
     
         6 . The method according to  claim 1 , wherein the polyanhydroglucuronic acid or salt is a salt in an amount of approximately 8% (w/w). 
     
     
         7 . The method according to  claim 6 , wherein the chlorhexidine di-gluconate is in an amount of approximately 11% (w/w). 
     
     
         8 . The method according to  claim 6 , wherein the remaining 81% (w/w) comprises the polyurethane foam matrix, wherein the polyurethane foam matrix exhibits flexibility and hydrophilicity. 
     
     
         9 . The method according to  claim 1 , wherein the polyanhydroglucuronic acid or salt thereof and the chlorhexidine di-gluconate are homogenously dispersed through the polyurethane foam matrix.