A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 39/22 (2006.01) A61M 1/00 (2006.01) A61M 27/00 (2006.01) A61M 39/06 (2006.01) A61B 17/00 (2006.01) A61B 17/34 (2006.01) A61B 19/00 (2006.01) A61M 25/06 (2006.01)
Patent
CA 2145309
A thoracentesis sheath catheter assembly (102) includes a catheter (106) connected to a valve body (108). The valve body is provided with a throughbore (109) coaxial to the catheter for receiving a thoracentesis needle (105) therethrough and a drainage bore in fluid communication with the first throughbore. The valve body is constructed as a first cylindrical portion (110) which is connected to the catheter and a second cylindrical portion (112) of larger inner diameter which is joined to the first cylindrical portion by a tapered inner wall (111). The second cylindrical portion contains a valve comprising a blocking ball (114) and a spring biased plunger (116) having a throughbore (117) coaxial to the catheter, and is closed with a cap (120) having a central hole (122) and/or a gasket for sealingly receiving the thoracentesis needle. A thoracentesis needle extends through the hole of the cap, the gasket, the plunger, the first cylindrical portion and into and through the catheter. With the thoracentesis needle in place, communication between the throughbore and the drainage bore (125) is blocked and a flow path is established through the nee- dle. When the needle is removed, the throughbore is automatically obstructed by movement of the ball by the plunger along the tapered inner wall. However, a second fluid path is automatically established from the throughbore to the drainage bore.
Scarfone Frank A.
Turkel David
Ridout & Maybee Llp
Symbiosis Corporation
LandOfFree
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