Topical anesthesia compositions

Abstract

A composition for local anesthesia which comprises a local anesthetic as an active ingredient and an agent for maintaining anesthetic action selected from the group consisting of acidic mucopolysaccharides such as sodium chondroitin sulfate and cellulose derivatives such as hydroxypropylmethylcellulose, and does not contain catecholamines, which has durability of anesthetic action suitable for minor dental operations such as tooth extraction, and can be used as a safe composition for local anesthesia used for oral surgery or dental treatment.

What is claimed is:  
     
         1 . A composition for local anesthesia which comprises a local anesthetic as an active ingredient and an agent for maintaining anesthetic action selected from the group consisting of an acidic mucopolysaccharide and a cellulose derivative, and does not contain a catecholamine.  
     
     
         2 . The composition for local anesthesia according to  claim 1 , which is used for oral surgery or dental treatment.  
     
     
         3 . The composition for local anesthesia according to  claim 1  or  2 , wherein the local anesthetic is lidocaine hydrochloride  
     
     
         4 . The composition according to any one of  claims 1  to  3 , wherein the acidic mucopolysaccharide is sodium chondroitin sulfate.  
     
     
         5 . The composition for local anesthesia according to any one of  claims 1  to  3 , wherein the cellulose derivative is hydroxypropylmethylcellulose.  
     
     
         6 . An agent for maintaining action of a local anesthetic selected from the group consisting of an acidic mucopolysaccharide and a cellulose derivative.  
     
     
         7 . The agent for maintaining action according to  claim 6 , wherein the local anesthetic is lidocaine hydrochloride.