Gutta percha filling device for conical surface sealing gutta percha

Abstract

The invention relates to a gutta percha filling device for conical surface sealing gutta percha. The device includes a push rod cylinder outer sleeve fixedly mounted on a handle of the filling device,a shell sleeve fixedly sleeving the front end of the push rod cylinder outer sleeve, and a head cylinder sleeved inside the shell sleeve; the front end of the head cylinder protrudes out of the shellsleeve and is fixedly provided with a gutta-percha needle; the rear end of the head cylinder is provided with a gel supplying hole communicating with a pin hole of the gutta-percha needle, and the rear end of the head cylinder is sleeved with a push rod cylinder; a cylinder hole communicating with the gel supply hole is coaxially disposed on the push rod cylinder, wherein the gel supply hole is aconical hole; the front end of the push rod cylinder is provided with a conical column which cooperates with the conical hole, and the conicity of the conical hole is the same as the conicity of theconical column; and the outer conical surface of the conical column is closely attached to the inner conical surface of the gel supply hole. The gutta percha filling device of the invention adopts a tapered surface to establish a close connection between the head cylinder and the push rod cylinder to achieve a sealed connection between the two, so as to avoid leakage of gutta percha from here, andthe device has the characteristics of simple structure, stability and reliability, and no gel-spilling.

Description

technical field [0001] The invention relates to a gutta-percha filling instrument, in particular to a gutta-percha filling instrument with a tapered surface sealing gutta-percha. Background technique [0002] Root canal filling with hot-melt gutta-percha is an important part of the root canal treatment process. In the early stage of filling, only a part of the heated gutta-percha tip can be inserted in the root tip area, and then the gutta-percha tip can be cut and compacted with the hot tip of the gutta-percha cutter , to fill the root tip with gutta-percha, and then use the gutta-percha filling instrument to fill the root canal with gutta-percha. When using the gutta-percha filling instrument, put the gutta-percha into the mouth of the gutta-percha, then push the rod to push the gutta-percha forward, and then the gutta-percha is extruded from the injection needle. When the gutta-percha is squeezed out, the piston rod is pulled back, and the gutta-percha can be re-added ...

AI Technical Summary

Problems solved by technology

[0003] The traditional gutta-percha filling instrument includes a cylindrical barrel and a piston barrel to fix the gutta-percha needle. The piston barrel and the cylindrical barrel are made into one body. The push rod in the piston barrel is provided with a piston. Since the piston contacts the gutta-percha throughout the whole process and needs to reciprocate continuously , the sealing performance of the piston will decrease over time, and the needle part of the gutta-percha needle will leak glue.

Images