Retractable needle apparatus for transmission of intravenous fluids
AssigneeMDC Investment Holdings, Inc.
InventorsMichael J. Botich, Thor R. Halseth
Life of this patent
Estimating the term…
Abstract
A device for transmitting intravenous fluids between a patient and an external reservoir is provided with a retractable needle for penetrating an intravenous fluid port or for directly penetrating the skin of the patient. The retractable needle renders the device safe for disposal after use. The device comprises a housing for holding the needle in a projecting configuration, a needle retainer for holding the needle in the projecting configuration against a rearward bias exerted by a spring, and an actuating member slidably positioned in the housing for releasing the needle retainer from the needle. An intravenous tubing connector is positioned to extend from the housing to provide a fluid connection between the needle and the external reservoir.
Claims27
An apparatus for intravenous fluid transmission between an external reservoir for intravenous fluid and a patient, comprising:
- a main housing having a barrel portion and a forward end;
- a hollow needle extending from the forward end of the housing and having a sharp end for placement into an injection site to transmit the fluid through the needle;
- a compressed spring connected with the needle for exerting a rearward bias upon the needle;
- a needle retainer positioned in the forward end of the main housing and having a rearwardly extending projection for holding the needle extending from the housing against the bias of the spring;
- an actuating member movably positioned in the main housing and having a forward end adapted to actuate release of the needle retainer from the needle to permit the spring to move the needle rearwardly into the housing from the position extending from the housing;
- and
- a tubing connector projecting outwardly from the barrel portion of the housing for transmitting a flow of intravenous fluid between the needle and the external reservoir.
An apparatus for use in intravenous fluid transmission, comprising:
- a main housing having a barrel portion and a forward end;
- a hollow needle having an enlarged head;
- a needle housing connected with the forward end of the main housing for holding the needle in a first position projecting from the needle housing and for permitting the needle to be moved within the housing to a second position;
- a compressed spring within the needle housing for exerting a force against the head of the needle;
- the needle housing comprising a latch member in abutment with the head of the needle for counteracting the force of the spring biasing the needle toward the second position;
- an actuating member movably positioned in the main housing and having a forward end adapted to actuate release of the latch member to permit movement of the needle to the second position;
- and
- a tubing connector projecting outwardly from the actuating member for transmitting a flow of intravenous fluid between the needle and an external reservoir connectable to the tubing connector.
An apparatus for intravenous fluid transmission between a patient and an external fluid reservoir, comprising:
- a main housing having a barrel portion, a forward end, and a stem forming a branch with said barrel portion;
- a hollow needle having an enlarged head;
- a needle housing connected with the forward end of the main housing for holding the needle in a first position projecting from the needle housing and for permitting the needle to be moved within the housing to a second position;
- a compressed spring within the needle housing for exerting a force against the head of the needle;
- the needle housing comprising a latch member in abutment with the head of the needle for counteracting the force of the spring biasing the needle toward the second position;
- an actuating member movably positioned in the main housing and having a forward end adapted to actuate release of the latch member to permit movement of the needle to the second position;
- and
- a tubing connector attached to the stem and projecting outwardly from the apparatus for transmitting a flow of intravenous fluid between the needle and the external reservoir connectable to the tubing connector.
An apparatus for use in intravenous fluid transmission, comprising:
- a main housing having a barrel portion and a forward end;
- a hollow needle having an enlarged head;
- a needle housing connected with the forward end of the main housing for holding the needle in a first position projecting from the needle housing and for permitting the needle to be moved within the housing to a second position;
- a compressed spring within the needle housing for exerting a force against the head of the needle;
- the needle housing comprising a latch member in abutment with the head of the needle for counteracting the force of the spring biasing the needle toward the second position;
- an actuating member movably positioned in the main housing and having a forward end adapted to actuate release of the latch member to permit movement of the needle to the second position;
- and
- a tubing connector projecting outwardly from the apparatus for transmitting a flow of intravenous fluid between the needle and a reservoir connectable to the tubing connector;
- said actuating member further comprising a central shaft extending axially within the barrel and having an axial cavity formed therein for receiving the needle;
- and a tubular stem extending from a side of the central shaft to a location external to the housing, and forming a branch with the axial cavity;
- and wherein said tubing connector is attached with the externally located end of the stem.
Dependencies are inferred from the claim text.