Patent ID: 9693789
Date: 2017-07-04
CPC Classifications: A61B,A61M

Claim:
1. A device for aspirating fluid from a body lumen, comprising: a cylindrical internal syringe barrel member that defines a chamber configured to contain fluid, the chamber having an opening through which fluid can be injected out of the chamber and through which fluid can be aspirated into the chamber; a plunger having a plunger seal movably positioned inside the chamber of the internal syringe barrel; a cylindrical external syringe barrel connected to the plunger, wherein the internal syringe barrel is slidably positioned inside the external syringe barrel such that the plunger and the external syringe barrel collectively form a body that is slidably coupled to the internal syringe barrel such that such that the body can slide relative to the internal syringe barrel with the plunger seal sliding through the chamber in a proximal or distal direction; first and second finger elements connected to and extending outward from the internal syringe barrel at a proximal end of the internal syringe barrel; third and fourth finger elements connected to and extending outward from the external syringe barrel at a distal end of the external syringe barrel; wherein movement of the first and second finger elements toward the third and fourth finger elements causes relative movement between the plunger seal within the chamber so as to aspirate fluid into the chamber; a locking mechanism movable between a first state and a second state, wherein the locking mechanism locks a position of the plunger seal relative to chamber when the locking mechanism is in the first state, and the locking mechanism permits relative movement of the plunger seal relative to chamber when the locking mechanism is in the second state.