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The C. R. Bard, Inc. patent solves the following problem:
Tear-sheath introducers (sheath introducers or introducers) and their use as medical devices are well known in the art. See, for example US Pat. Nos. 6,814,718, 6,808,520, 6,808,509, 6,796,991, 6,740,101, 6,712,791, 6,712,789, 6,695,810, 6,641,564, 6,632,234, 6,623,460, 6,599,302, 6.361. 559, and 5,558,652, as well as US Patent Applications nos. 20040260243, 20040254534, 20040176781, 2004006330, 2004097863, and 2002072789, the disclosures of which are incorporated here by reference. These introducers used in medical procedures to insert a catheter into the body and to provide vascular access for vessels of a patient. The catheter is inserted through the introducers of the first use of a needle to make an access site. A dilator is then used to dilate the access site to allow a larger diameter sheath introducer introduced into the vessel through the site access. catheter is then inserted through the sheath introducer and into the vessel. After the catheter is inserted, the sheath introducer is removed, leaving the catheter in the vessel.
Our analysis of this patent is as follows:
C. R. Bard, Inc.’s patent US 8403890 B2 deals with Reduced friction catheter introducer and method of manufacturing and using the same.
Tear-sheath introducers for the catheter, the procedure for making such introducers, and methods for using such introducers described. The sheath introducers include movable valve encapsulated in a movable housing that allows the valve to move along the axis of the introducer. While the movable valve travel and housing along the axis, a part of the hub protrudes past the valve, and disclosed. Likewise, sheath introducers can also consist of a stationary valve, and housing to be opened to expose a portion of the hub when a conduit penetrate stationary valve. waterways may include a one-way valve actuator penetrate and open the valve, but remains attached to a portion of the introducer when the introducer chunks for removal from a patient. On two occasions, the protruding portion of the hub includes a friction-free path for a catheter sheath introducer.
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