Apparatus for and method of intravasal pressure measurement and low-contamination insertion of catheters for example into blood vessels

A one-person-operable, sterilisable, medical pressure measuring apparatus, comprising:

• a closed container with rigid walls and an entry, said closed container having a compressible medium therein;
• at least one cannula connection for connecting at least one cannula to said closed container;
• and
• a measuring duct opening into said closed container, said measuring duct having a first portion with a first diameter disposed outside said container and a second portion with a second diameter disposed within said container, said first diameter being smaller than said second diameter.

A one-person-operable, sterilisable, medical pressure measuring apparatus, comprising:

• a closed container with rigid walls and an entry, said closed container having a compressible medium therein;
• at least one cannula connection for connecting at least one cannula to said closed container;
• and
• a measuring duct opening into said closed container, said measuring duct having a diameter changing over a length of said measuring duct.

A one-person-operable, sterilisable, medical pressure measuring apparatus, comprising:

• a closed container with rigid walls and a closable opening into an internal space in said container, said closed container having a compressible medium therein;
• at least one cannula connection for connecting at least one cannula to said closed container;
• and
• a measuring duct with a mouth opening into said closed container, said mouth opening being disposed in directly opposite relationship to said closable opening of said container.

A one-person-operable, sterilisable, medical pressure measuring apparatus, comprising:

• a closed container with rigid walls, said closed container having a compressible medium therein, said container being integrated into a plunger of a syringe, said syringe having a closable catheter passage which extends through said plunger of said syringe;
• at least one cannula connection for connecting at least one cannula to said closed container;
• and
• a measuring duct opening into said closed container.