Low-Profile Single and Dual Vascular Access Device

Abstract

A low-profile access port for subcutaneous implantation within a patient. The access port can include a set of receiving cups which can be placed in fluid communication with a catheter. The set of receiving cups can provide a greater skin surface with which to access the port to avoid repeated penetrations at a single locus, such as during consecutive dialysis treatments. The access port can alternatively include needle penetrable arms or elongate chambers that also have a slim, low profile. The access port can include a needle guide to direct subsequent needle access to different insertion points to permit healing at the previous insertion points. The access port can be formed of a modular construction with a first conduit, a second conduit, and an outer shell. The outer shell can include a proximal portion and a distal portion. The access port can include a stem assembly and a locking member.

What is claimed is: 
     
         1 . A low-profile access port, comprising:
 a body including:
 a first set of receiving cups; 
 a first set of inlet ports, each receiving cup of the first set of receiving cups in fluid communication with an inlet port of the first set of inlet ports, each receiving cup concavely shaped to direct an impinging needle toward the inlet port; and 
 a first conduit in fluid communication with each inlet port of the first set of inlet ports, the first conduit extending from the first set of inlet ports to a first outlet of a port stem; and 
   a catheter in fluid communication with the first outlet.   
     
     
         2 . The low-profile access port according to  claim 1 , wherein the body further includes a second set of receiving cups and a second set of inlet ports, each receiving cup of the second set of receiving cups in fluid communication with an inlet port of the second set of inlet ports, and a second conduit in fluid communication with each inlet port of the second set of inlet ports, the second conduit extending from the second set of inlet ports to a second outlet of the port stem. 
     
     
         3 . The low-profile access port according to  claim 2 , wherein the first set of receiving cups is proximal to the second set of receiving cups. 
     
     
         4 . The low-profile access port according to  claim 1 , wherein a perimeter of each receiving cup of the first set of receiving cups lies in a plane, and wherein the plane of the perimeter of each receiving cup is angled with respect to one another. 
     
     
         5 . The low-profile access port according to  claim 1 , wherein a perimeter of each receiving cup of the first set of receiving cups lies in a plane, and wherein the plane of the perimeter of each receiving cup is co-planar with respect to one another. 
     
     
         6 . The low-profile access port according to  claim 1 , wherein a perimeter of each receiving cup of the first set of receiving cups includes a cutout, the cutout between adjacent receiving cups providing communication therebetween. 
     
     
         7 . A dialysis catheter assembly, comprising:
 a catheter having a first lumen and a second lumen;   a bifurcation hub having a distal end in communication with a proximal end of the catheter;   a first extension leg and a second extension leg connected to a distal end of the bifurcation hub, the first extension leg in fluid communication with the first lumen, the second extension leg in fluid communication with the second lumen; and   a first port including a first receiving cup defining a first perimeter substantially parallel to the skin surface following implantation of the dialysis catheter assembly, the first port including a first outlet in fluid communication with the first receiving cup, the first outlet in fluid communication with the first extension leg; and   a second port separated from the first port, the second port including a second receiving cup defining a second perimeter substantially parallel to the skin surface following implantation of the dialysis catheter assembly, the second port including a second outlet in fluid communication with the second receiving cup, the second outlet in fluid communication with the second extension leg.   
     
     
         8 . The dialysis catheter assembly according to  claim 7 , wherein the first receiving cup includes a first septum covering the first perimeter, and the second receiving cup includes a second septum covering the second perimeter, the first septum and the second septum providing a continuous outer profile to the first port and the second port. 
     
     
         9 . A subcutaneous dialysis port, comprising:
 a catheter having a first lumen and a second lumen;   a bifurcation hub having a distal end in communication with a proximal end of the catheter;   a first elongate arm and a second elongate arm connected to a distal end of the bifurcation hub, the first elongate arm in fluid communication with the first lumen, the second elongate arm in fluid communication with the second lumen, each of the first elongate arm and the second elongate arm including a needle penetrable portion in an upper wall thereof.   
     
     
         10 . The subcutaneous dialysis port according to  claim 9 , wherein a lower wall of the first elongate arm and the second elongate arm are formed of a compliant material that allows the first and second elongate arm to conform to a contour of a patient's body. 
     
     
         11 . The subcutaneous dialysis port according to  claim 9 , wherein the first elongate arm and the second elongate arm each include an end cap disposed at the proximal end thereof, each end cap including at least one of a palpation feature and an indicia, the indicia observable under a suitable imaging modality. 
     
     
         12 . The subcutaneous dialysis port according to  claim 11 , wherein the at least one of the palpation feature and the indicia indicating a flow direction to a user. 
     
     
         13 . The subcutaneous dialysis port according to  claim 9 , wherein the needle penetrable portion includes a self-sealing silicone material. 
     
     
         14 . The subcutaneous dialysis port according to  claim 9 , wherein a lower wall of the first elongate arm and the second elongate arm are formed of a needle impenetrable material. 
     
     
         15 . A port assembly, comprising:
 a first conduit including a first receiving cup at a proximal end and a first nozzle at a distal end, wherein a first valve assembly is disposed between the first receiving cup and the first nozzle;   a second conduit including a second receiving cup at a proximal end and a second nozzle at a distal end, wherein a second valve assembly is disposed between the second receiving cup and the second nozzle; and   an outer shell surrounding the first conduit and the second conduit, the outer shell including a proximal portion surrounding the first receiving cup and the second receiving cup, and the distal portion surrounding the first nozzle and the second nozzle, the proximal portion, the distal portion, the first conduit, and the second conduit connected via press fit engagement.   
     
     
         16 . The port assembly according to  claim 15 , wherein the distal portion of the outer shell includes a distal receiving slot designed to receive a stem assembly. 
     
     
         17 . The port assembly according to  claim 16 , wherein the stem assembly includes a housing having a proximal end designed for insertion into the distal receiving slot, and wherein the stem assembly is connected to the distal portion of the outer shell via press fit engagement. 
     
     
         18 . The port assembly according to  claim 17 , wherein the stem assembly includes a first stem and a second stem extending from a distal end of the housing, the first stem in fluid communication with the first receiving cup, and the second stem in fluid communication with the second receiving cup. 
     
     
         19 . The port assembly according to  claim 18 , further comprising a catheter including a first lumen designed for insertion over the first stem, a second lumen designed for insertion over the second stem, and a locking member designed to couple the stem assembly to the catheter. 
     
     
         20 . The port assembly according to  claim 19 , wherein the stem assembly includes a first slot on an upper portion and a second slot on a lower portion, and wherein the locking member includes a first protrusion designed to snap-fit in the first slot, and a second protrusion designed to snap-fit in the second slot. 
     
     
         21 . The port assembly according to  claim 20 , wherein the outer shell, the housing, and the locking member together provide a smooth continuous outer surface.