Fine needle aspiration biopsy device
AssigneeCareFusion 2200, Inc.
InventorsEvan Linderman, John Krueger, Michael Plishka
Life of this patent
Estimating the term…
Abstract
A fine needle aspiration device with a modified handle and cannula through which a vacuum is delivered to the targeted tissue for removal of liquid or cellular samples is provided, the vacuum being provided via a flexible tubing capable of fitting within a restricted space such as, for example, a CT gantry. A vacuum source may be provided to assist the fine needle aspiration procedure via flexible tubing, which allows the vacuum source to be located outside the CT gantry or on the patient.
Claims18
A biopsy device comprising:
- a moveable hub coupled to a first end of a cannula and having a needle port and a vacuum port, the vacuum port being in communication with the cannula;
- a vacuum line in communication with the vacuum port;
- a stationary housing surrounding a portion of the cannula between the first end and an opposing second end, the stationary housing being distal to the hub and separated by a distance from the hub;
- and
- a biasing member coupled with the moveable hub and the stationary housing, the biasing member extending from the moveable hub to the stationary housing along the distance, and the biasing member imparting a biasing force on the hub in a direction away from the stationary housing,
- wherein an application of force on the hub sufficient to overcome the biasing force of the biasing member translates the moveable hub and the cannula in a direction toward the stationary housing, and
- wherein when the cannula is inserted in the body of the patient, a vacuum is provided via the vacuum line to aspirate liquid and cellular samples from the body of the patient into the cannula.
A method of performing a biopsy using a fine needle aspiration device having a cannula having a first end and an opposing second end, a movable hub coupled to the first end of the cannula, a stationary housing surrounding a portion of the cannula between the first end and the second end, the stationary housing being distal to the hub and separated by a distance from the hub, and a biasing member coupled with the hub and the housing, the biasing member extending from the moveable hub to the stationary housing along the distance and imparting a biasing force on the hub in a direction away from the stationary housing, the method comprising:
- coupling the cannula to a vacuum source;
- inserting the cannula in the body of a patient;
- applying a vacuum to the cannula via the vacuum source;
- applying a force on the moveable hub in a direction toward the stationary housing sufficient to overcome the biasing force imparted by the biasing member, thereby translating the moveable hub and the cannula in the direction toward the stationary housing;
- and
- aspirating a liquid sample or a cellular sample into the cannula via the vacuum applied to the cannula.
Dependencies are inferred from the claim text.