Abstract:
An implantable venous access port for a catheter. The port assembly (100) includes a body (102), a septum (134) for needle insertion, a discharge port (150) having a passageway (154) and to which a catheter proximal end (202) is connected, and a proximal port (170) with a proximal passageway (172, 116) that is in line with the discharge port passageway (154). A chamber (118) of the port body (102) fluidly connects the proximal port passageway and the discharge port passageway, and a proximal septum (174) traverses and seals the proximal passageway (172, 116). An entry cannula (190) is insertable into the proximal opening and penetrates the proximal septum (174) and extends to the discharge port passageway (154) enabling a guide wire (198) to be inserted therethrough after the port (100) has been connected to the catheter (200), whereafter the entire assembly is implantable into a patient over the guide wire. A method of over-the-wire venous port placement is disclosed, and also a method for assembling the port.
Abstract:
A catheter (100) having a first lumen (110) having a first distal tip (112) and a second lumen (130) having a second distal tip (132). The first and second distal tips (112,132) include openable portions that are normally closed when undeflected by lumen fluid pressure imbalance relative to the blood pressure of the patient. The first lumen (110) has an openable portion, flap (1 14) that opens proximally into the first lumen when the first lumen is under negative pressure to withdraw blood from the vessel through the first lumen to be dialysed (but that can open distally into the vessel under positive lumen pressure to permit blood flow into the vessel). The second lumen (130) extends distally beyond the first distal tip (112) to its second distal tip (132), and its openable portion is several lip sections (135) that are normally closed against each other when undeflected but that open outwardly when the second lumen is positively pressurized during hemodialysis, permitting blood to return to the patient's vessel.
Abstract:
A releasably locking dilator and sheath assembly (10,200,300) and methods for releasing the dilator (12) from the sheath and longitudinally splitting the sheath (14). The sheath hub has a valve (260,360) and two opposing winged tabs (42), each tab having a perpendicular portion (44) and an angled portion (46), as well as having a female locking portion (53). The dilator hub has a male locking portion (30) designed to engage the female locking portion of the sheath hub. The dilator is released from the sheath by rotating the dilator 90 in relation to the sheath and pulling the dilator out of the sheath. The sheath is longitudinally split by creating a couple on each of the winged tabs (42) thereby forcing the sheath and the sheath hub to split longitudinally. The sheath is removed from around a catheter while leaving the catheter in place.
Abstract:
An adapter assembly (120) for connecting a catheter assembly to a tunneler is disclosed. The adapter assembly (120) has a generally tubular body having a first end, a second end and a longitudinal axis (128) extending therethrough between the first end and the second end. The first end (124) of the adapter is constructed to engage the proximal end of a trocar (110). The second end (126) of the adapter (120) is constructed to releasably engage at least one catheter lumen. A slider (140) is disposed about the adapter (120) and is longitudinally slidable along the adapter (120). When the slider (140) is slid towards the second end (126) of the adapter (120), the slider (140) engages a plurality of legs (134a, b, c, d) on the adapter (120) The slider (140) biases the plurality of legs (134a, b, c, d) toward each other and the longitudinal axis of the adapter (120). A method of subcutaneously tunneling a catheter using the adapter assembly (120) is also described.
Abstract:
A detachable catheter hub (150) is disclosed. The hub includes a first portion (152) having a proximal end fluidly connectable to at least one catheter extension tube (130) and a distal end (154) fluidly connectable to at least one catheter lumen. The at least one catheterextension tube is fluidly communicable with the at least one catheter lumen.
Abstract:
A detachable catheter hub (150) is disclosed. The hub includes a first portion (152) having a proximal end fluidly connectable to at least one catheter extension tube (130) and a distal end (154) fluidly connectable to at least one catheter lumen. The at least one catheterextension tube is fluidly communicable with the at least one catheter lumen.
Abstract:
A cutting balloon catheter assembly (100) including a dual lumen catheter (130) having a distal end (134), an inflation/deflation lumen (138) and a second or guidewire lumen (136). The assembly further includes an inflatable balloon (110) having an interior cavity (116) and an expandable covering (120) disposed about the balloon wherein the covering has an array of cutting edges. In the assembly, the balloon (110) is fixedly connected to the distal end (134) of the catheter and the interior cavity (116) of the balloon (110) is in fluid communication with the first lumen (138) of the catheter (130). A method of removing obstructions (149) from vessel walls (154) using the present invention is also disclosed wherein the cutting edges abrade the stenoses, plaque or lesions along the vessel walls, when the catheter assembly is reciprocally moved longitudinally or rotationally after inflation of the balloon.
Abstract:
An information ring (110) for use with a catheter is disclosed. The information ring (110) includes a body (112) having a first end (114) and a second end(116). The body (110) has a first body face (118) extending between the first end (114) and the second end (116), and a second, generally convex face (120) extending between the first end (114) and the second end (116). The body (112) has an opening (122) extending therethrough between the first body face (118) and the second face (120). A first indicia portion (124) is located at the first end (114). The first indicia portion (124) has a first indicia face (128) sized to allow indicia to be printed on the first indicia face (128).