Intravenous catheter with automatically retracting needle-guide
September 14, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesCannula insertion set with safety retracting needle Assembly of needle and protector Intravenous catheter placement device Catheter with needle guard Nonreusable syringe Safety disposable intravenous (I.V. assembly) Hypodermic syringe with needle retraction feature Catheter sharp retraction system Patent #: 5376075 InventorsAssigneeApplicationNo. 305720 filed on 09/14/1994US Classes:604/171, Body entering conduit axially movable within flexible protective sheath facilitating sterile insertion into body duct604/164.11, Cannula604/198Cover or protector for body entering conduit movable axially relative to one anotherExaminersPrimary: Yasko, John D.Assistant: Knights, Laird J. Attorney, Agent or FirmInternational ClassA61M 005/00Foreign Application Priority Data1993-09-16 ITAbstractAn intravenous catheter is provided with a cannula and a needle-guide for the cannula. A support carries the needle-guide, and has a first end from which the needle-guide extends. The support is carried in a sheath, having a diameter sufficient to permit sliding of the support and having a length sufficient to accept the full length of the needle-guide. A retractor continuously urges the support to a position in which the needle-guide is withdrawn into the sheath. The sheath has a first end which defines an opening through which the first end of the support extends, and the sheath is capable of reducing the size of the opening upon insertion of the first end of the sheath into the cannula to grip the support, and returns to its original size upon withdrawal of the first end from the cannula to release the support and permit the withdrawal of the needle-guide into the sheath under the action of the retractor. This provides automatic and involuntary withdrawal of the needle-guide into the protective sheath, reducing the chances of injury.Field of SearchHaving means for preventing reuse of deviceBody entering conduit axially movable within body piercing conduit while former is disposed in the body Body entering conduit axially movable within flexible protective sheath facilitating sterile insertion into body duct Portion of body entering conduit stored in material receiving syringe reservoir | |
