The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 11, 1995
Filed:
Feb. 18, 1994
Robert Roth, Festus, MO (US);
Fred P Lampropoulos, Salt Lake City, UT (US);
Jim Mottola, South Jordan, UT (US);
Arlin Dale Nelson, Midvale, UT (US);
Jerrold L Foote, Salt Lake City, UT (US);
Merit Medical Systems, Inc., South Jordan, UT (US);
Abstract
A novel catheter apparatus for use in delivering an anesthetic agent or other fluid medicament to the portion of subcutaneous tissue through which a catheter device has been inserted into a patient, thereby allowing the catheter device to be retracted without causing pain or discomfort to the patient. The catheter device has an indwelling cannula adapted for insertion through subcutaneous tissue into a patient's body. A cylindrical sheath is placed on the cannula so as to be positioned within the subcutaneous tissue once the cannula has been inserted into the body. The cylindrical sheath has formed therein a lumen into which the anesthetic agent or other fluid medicament can be delivered via a hub that is disposed on the catheter apparatus. The cylindrical sheath has formed therein a plurality of one-way slit valves. The one-way slit valves permit the anesthetic agent or fluid medicament to be delivered to the surrounding subcutaneous tissue, and also prevent any bodily fluids from entering the lumen. In one embodiment the cylindrical sheath is permanently mounted to the cannula. In another embodiment the cylindrical sheath is detachably mountable to the cannula. In yet another embodiment, the lumen is formed within the outer wall of the cannula and the one-way slits are formed through the outer wall.