Abstract: An introducer sheath assembly (10) having a sheath tube (12), a hub (16), a valve (30) and a valve-retaining cap (50) on the proximal end of the hub. The cap (50) is so secured to the hub (16) as to have a closed, locked position and also an open position permitting access to the interior of the hub and the valve (30) while the cap (50) remains secured to the hub (16).

Abstract: An introducer sheath assembly (10) having a sheath tube (12), a hub (16), a valve (30) and a valve-retaining cap (50) on the proximal end of the hub. The cap (50) is so secured to the hub (16) as to have a closed, locked position and also an open position permitting access to the interior of the hub and the valve (30) while the cap (50) remains secured to the hub (16).

Abstract: An introducer sheath assembly (10) having a sheath tube (12), a hub (16), a valve (30) and a valve-retaining cap (50) on the proximal end of the hub. The cap (50) is so secured to the hub (16) as to have a closed, locked position and also an open position permitting access to the interior of the hub and the valve (30) while the cap (50) remains secured to the hub (16).

Abstract: An introducer sheath assembly (10) having a sheath tube (12), a hub (16), a valve (30) and a valve-retaining cap (50) on the proximal end of the hub. The cap (50) is so secured to the hub (16) as to have a closed, locked position and also an open position permitting access to the interior of the hub and the valve (30) while the cap (50) remains secured to the hub (16).

Abstract: Disclosed is a system and method for splitting dual lumens using hot stamping. The system includes a die assembly having a heated die with a septum that is configured to split the dual lumen to form a split catheter by splitting the septum of the dual lumen. The die can receive a pair of mandrels therethrough, wherein the mandrels are configured to support a dual lumen loaded thereon. The dual lumen and the mandrels are pushed via a block into the die until the dual lumen passes through the septum within the die and two lumens are fully formed. The lumens are cooled with an air blast and the mandrels are removed after the lumens are cooled.

Abstract: The present disclosure relates to catheter assembly and components thereof. In one embodiment, a catheter assembly includes a catheter including a body with a proximal end and a distal end, wherein the body includes a first lumen and a second lumen. The lumens are substantially symmetrical and are joined together and split at the distal ends thereof. The distal ends are bent apart from each other such that the catheter resembles a Y-shape when viewed from the front. Each of the distal ends comprises a U-shaped cutout to prevent the inflow of blood from becoming blocked. Because the lumens are substantially equal in size, shape, and dimension, the connection can be reversed without high recirculation if one lumen is blocked.

Abstract: Disclosed is a catheter insertion assembly that includes an arterial lumen having a first stylet embedded therein and a venous lumen having a second stylet embedded therein, The stylets extend beyond the proximal and distal ends of each of the lumens. The second stylet of the venous lumen includes an aperture near the distal end thereof so as to receive the distal end of the first stylet of the arterial lumen therethrough, thereby connecting the venous and arterial lumens temporarily together when the catheter is being inserted into a patient. In this way, the stylets increase column strength for dual-tip catheters.

Abstract: Disclosed is a tearaway sheath introducer. The sheath includes a sheath hub disposed on an end thereof, wherein the sheath is configured to receive a dilator therethrough, further wherein the dilator comprises a hub with a locking mechanism. The sheath hub is configured to retain a cap set having a molded valve therein. The cap set and the valve can be ultrasonically welded to the sheath hub such that the cap set and the valve are integral to the sheath hub. The valve prevents blood from coming out of a patient's incision site after the dilator is removed from the sheath, but before a catheter is inserted. In this way, the present invention improves the process of introducing catheters into the blood vessels.

Abstract: Disclosed is a dual lumen retrograde catheter and hub attachment for dialysis. The catheter includes a venous lumen and an arterial lumen that are attached to a proximal hub having at least one luer extension extending therefrom. The distal end of the catheter is configured to be inserted into the blood vessel and placed into a desired position. The proximal end is tunneled backwards under the skin using a trocar and exited. The proximal end of the catheter can attach to a proximal hub via a pair of cannulas with raised barbs for removably securing proximal ends of the lumens thereon. The lumens are secured in a side-by-side configuration via a compression cap that can be screwed onto the proximal hub to prevent the catheter from detaching from the proximal hub.

Abstract: A catheter assembly (10) having a catheter (12) with lumens (20a,20b), extension tubes (14a,14b) and a hub (16). Distal ends (36) of the extension tubes and the proximal end (24) of the catheter are secured in and to the hub. Fittings (50) are first affixed in the distal ends of the extension tubes and have annular collars (56) that are embedded in the hub when the hub is molded over the distal ends of the extension tubes during manufacturing. An array of annular barbs (60) secure the cylindrical portion (52) of each fitting in the respective extension tube distal end (36).

Abstract: An introducer sheath assembly (10) having a sheath tube (12), a hub (16), a valve (30) and a valve-retaining cap (50) on the proximal end of the hub. The cap (50) is so secured to the hub (16) as to have a closed, locked position and also an open position permitting access to the interior of the hub and the valve (30) while the cap (50) remains secured to the hub (16).

Abstract: An introducer sheath assembly (10) having a sheath tube (12), a hub (16), a valve (30) and a valve-retaining cap (50) on the proximal end of the hub. The cap (50) is so secured to the hub (16) as to have a closed, locked position and also an open position permitting access to the interior of the hub and the valve (30) while the cap (50) remains secured to the hub (16).

Abstract: A releasably locking dilator and sheath assembly and methods for releasing the dilator from the sheath and longitudinally splitting the sheath. The assembly includes a dilator having a dilator hub and a sheath having a sheath hub. The sheath hub may have a valve and has two opposing winged tabs, each tab having a perpendicular portion and an angled portion as well as a female threaded portion. The dilator hub has a male threaded portion designed to engage the female threaded 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 thereby forcing the sheath and the sheath hub to split longitudinally. With the sheath and sheath hub split longitudinally, the sheath is removed from around a catheter while leaving the catheter in place.

Abstract: Disclosed is a split tip catheter having a tapered venous lumen and a tapered arterial lumen, wherein each of the lumens includes a D-shaped cross section. In one embodiment, the length of the venous lumen is greater than the length of the arterial lumen. The venous lumen and the arterial lumen are secured in a side-by-side configuration via an outer sleeve such that the proximal end of the outer sleeve is aligned with the proximal ends of the venous lumen and the arterial lumen, leaving the distal ends of the venous lumen and the arterial lumen free. The proximal ends of the outer sleeve, the venous lumen, and the arterial lumen are insert molded to a hub to connect the lumens to extensions such as venous and arterial blood lines for dialysis treatments.

Abstract: A tearaway sheath assembly (100) having a splittable sheath tube (102) a splittable hub (110), a split valve (150,250) and a split cap (180). The valve (150,250) has a slit (158,258) at least partially across the transverse distal section (154) such that transverse distal section may be displaced laterally during insertion through the slit (158,258), of a dilator (200) or a catheter. The valve (150,250) is formed in two separate halves (152A,152B;252) that are fused or adhered to each other to form a sealed weak bond (154) that is easily broken during splitting of the sheath; each valve half is mechanically affixed in a proximal valve-receiving recess (130) of the hub such as by anchor posts (136) extending through apertures (166A,166B) in ears (164A,164B) of each valve half. A two-part cap (180) is affixed to the hub proximal end (120) and traps the valve between itself and the hub.

Abstract: A tearaway introducer sheath assembly (10) for use in implantation of a catheter into a patient, having an elongated polytetrafluoroethylene sheath tube (12) and a proximal polyethylene hub component (16). The hub comprises two halves (22) insert molded about the sheath tube proximal end and joined to each other by frangible webs (28) enabling manual splitting. At least one pair of opposed holes (42) is formed through the tube proximal end portion 44, and a polyethylene liner (46) is inserted into the tube's proximal end portion. The polyethylene flows into the at least one pair of holes (42) to fuse with the liner, establishing a pair of physical joints (50?) integrally joining the liner (46) to a respective hub half (22). Upon manual splitting of the hub halves, the sheath tube easily splits along its length as a result of a property of the polytetrafluoroethylene material.

Abstract: A tearaway sheath assembly (100) having a splittable sheath tube (102) a splittable hub (110), a split valve (150,250) and a split cap (180). The valve (150,250) has a slit (158,258) at least partially across the transverse distal section (154) such that transverse distal section may be displaced laterally during insertion through the slit (158,258), of a dilator (200) or a catheter. The valve (150,250) is formed in two separate halves (152A,152B;252) that are fused or adhered to each other to form a sealed weak bond (154) that is easily broken during splitting of the sheath; each valve half is mechanically affixed in a proximal valve-receiving recess (130) of the hub such as by anchor posts (136) extending through apertures (166A,166B) in ears (164A,164B) of each valve half. A two-part cap (180) is affixed to the hub proximal end (120) and traps the valve between itself and the hub.

Abstract: A tearaway sheath assembly (100) having a splittable sheath tube (102) a splittable hub (110), a split valve (150,250) and a split cap (180). The valve (150,250) has a slit (158,258) at least partially across the transverse distal section (154) such that transverse distal section may be displaced laterally during insertion through the slit (158,258), of a dilator (200) or a catheter. The valve (150,250) is formed in two separate halves (152A,152B;252) that are fused or adhered to each other to form a sealed weak bond (154) that is easily broken during splitting of the sheath; each valve half is mechanically affixed in a proximal valve-receiving recess (130) of the hub such as by anchor posts (136) extending through apertures (166A,166B) in ears (164A,164B) of each valve half. A two-part cap (180) is affixed to the hub proximal end (120) and traps the valve between itself and the hub.

Abstract: A multiple catheter assembly including first and second catheters. The first catheter includes a first catheter outer surface defining a first lumen, a first distal end terminating in a first distal tip, and a first transition region. The second catheter includes a second catheter outer surface defining a second lumen, a second distal end terminating in a second distal tip, and a second transition region. At least a portion of each of the first and second catheters resides in a cannulating portion. The first and second transition regions of the first and second catheters transition cross sections of the first and second catheter outer surfaces at the first and second distal tips to cross sections of the first and second catheter outer surfaces in the cannulating portion. In exemplary embodiments, the portions of each of the first and second catheters in the cannulating portion are releasably bonded to one another.

Abstract: A multiple catheter assembly (100) including a first catheter (110) having a first proximal end region (112), a first distal end region (114) terminating in a first distal tip (116), and an outer surface (120) defining at least a first lumen (122) extending longitudinally therethrough between a first distal and a first proximal opening. The assembly (100) also includes a second catheter (130) having a second proximal end region (132), a second distal end region (134) terminating in a second distal tip (136), and a second outer surface (140) defining at least a second lumen (142) extending longitudinally therethrough between a second distal and a second proximal opening. The first (122) and second (142) lumens are independent from each other for facilitating simultaneous flow in opposite directions.