Patent ID: 7137304

Claim:
A pressure sensor, comprising: a platform; at least one separating membrane, which, with the platform, encloses a pressure chamber, said platform defining a hydraulic path which communicates with said pressure chamber, and defining a canal and a platform blind hole in a surface of said platform, which extends from the end of the platform blind hole, said canal communicating with said hydraulic path, wherein the diameter of said canal is smaller than the diameter of said platform blind hole, so that a first abutment surface is formed between said platform blind hole and said canal; a sealing element insertable into said platform blind hole, said sealing element having a second abutment surface for supporting said sealing element on said first abutment surface, and additionally having a radially flexible, lateral surface; and an expander, which can be brought into engagement with said sealing element, in order to expand the lateral surface of said sealing element radially.