초록 ▼

A catheter introduction syringe for the introduction of a catheter or catheter guide wire into a patient\s body, the catheter introduction syringe comprises a hollow substantially cylindrical syringe barrel to support a needle thereon having a substantially cylindrical plunger slidably disposed ther

A catheter introduction syringe for the introduction of a catheter or catheter guide wire into a patient\s body, the catheter introduction syringe comprises a hollow substantially cylindrical syringe barrel to support a needle thereon having a substantially cylindrical plunger slidably disposed therein, the substantially cylindrical plunger includes a centrally disposed channel formed longitudinally therethrough having a valve assembly disposed in operative relationship relative to the centrally disposed channel to prevent passage of air or liquid therethrough during flushing or aspirating of the catheter introduction syringe and permit the introduction of a catheter or catheter guide wire through the centrally disposed channel, hollow substantially cylindrical syringe barrel and needle for introduction into the patient\s body without the flow of air or liquid through the centrally disposed channel.

대표청구항 ▼

A catheter introduction syringe for the introduction of a catheter or catheter guide wire into a patient\s body, said catheter introduction syringe comprises a hollow syringe barrel to support a needle thereon having a plunger slidably disposed therein, said plunger comprises a first and second plun

A catheter introduction syringe for the introduction of a catheter or catheter guide wire into a patient\s body, said catheter introduction syringe comprises a hollow syringe barrel to support a needle thereon having a plunger slidably disposed therein, said plunger comprises a first and second plunger element including a first and second valve seat respectively to cooperatively form a valve recess to operatively house a valve assembly therein and a centrally disposed channel formed longitudinally therethrough including a first and second centrally disposed channels formed through said first and second plunger elements respectively, said first and second centrally disposed channels disposed on opposite sides of said valve assembly, said valve assembly comprises a first and second valve element each including a flexible resilient valve member having a normally closed centrally disposed slit formed therein disposed within said first and second valve seats respectively to cooperatively form a valve chamber therebetween and a rigid valve support element disposed within said valve chamber arranged to limit deflection of said first and second valve elements and to maintain the sealing integrity thereof, said valve assembly disposed in operative relationship relative to said centrally disposed channel to prevent passage of air or liquid therethrough during flushing or aspirating of said catheter introduction syringe and permit the introduction a catheter or catheter guide wire through centrally disposed channel, said hollow syringe barrel and needle for introduction into the patient\s body without the flow of air or liquid through said centrally disposed channel.