Dual reservoir implantable access port

Abstract

An implantable access port for use in transferring fluid transdermally between an external fluid storage or dispensing device and a site within a patient is disclosed. The access port includes a body, at least two reservoirs defined within the access port body, and at least one septum secured to the body and enclosing the reservoirs within the body. The access port also includes reservoir outlets defined within the reservoirs. The access port also has body conduits defined within the body and in fluid communication with the reservoir outlets and external openings defined in the exterior of the body. An implantable access port and system for use in apheresis is also provided that includes an implantable access port, at least one needle, and a catheter that is fluidly connected to the access port.

1 . An implantable vascular access port, comprising:
 a body comprising:
 an upper surface; 
 an opposed lower surface; 
 a side wall extending therebetween the upper and lower surfaces, the side wall defining a pair of ports; 
 a first reservoir defined therein a portion of the upper surface of the body; 
 a second reservoir defined therein a portion of the upper surface of the body; 
 a first body conduit extending between the first reservoir and a first port of the pair of ports; and 
 a second body conduit extending between the second reservoir and a second port of the pair of ports; 
   at least one septum configured to be seated within an upper portion of at least one of the first or second reservoirs; and   a retainer defining a first retainer opening and a second retainer opening, wherein the first and second retainer openings are separated by a common dividing member, wherein the retainer is mountable thereon the body such that the first retainer opening overlies the first reservoir and the second retainer opening overlies the second reservoir, and wherein the at least one septum is sealingly secured therebetween the retainer and the body.   
   
   
       2 . The access port of  claim 1 , further comprising an outlet stem comprising:
 a proximal end;   an opposing distal end;   a first stem conduit extending therethrough the outlet stem from the proximal end to the distal end; and   a second stem conduit extending therethrough the outlet stem from the proximal end to the distal end,   wherein the proximal end of the outlet stem is connected to and overlies the pair of ports such that the first body conduit is in fluid communication with the first stem conduit and the second body conduit is in fluid communication with the second stem conduit.   
   
   
       3 . The access port of  claim 2 , wherein a distal portion of the outlet stem is configured to matably attach to a dual lumen catheter. 
   
   
       4 . The access port of  claim 1 , wherein at least a portion of the dividing member of the retainer projects outwardly from a plane defined by the upper surface of the body. 
   
   
       5 . The access port of  claim 1 , wherein the first and second reservoirs are each substantially D-shaped in a cross-section. 
   
   
       6 . The access port of  claim 5 , wherein the D-shaped first and second reservoirs each comprise a substantially straight wall portion and a substantially arcuate wall portion in the cross-section, wherein the first and second reservoirs are defined within the body with the respective straight wall portions parallel to and spaced from a plane bisecting the center of the body at a predetermined distance, and wherein at least a portion of the respective straight wall portion of the first and second reservoirs form a common wall. 
   
   
       7 . The access port of  claim 1 , wherein each respective first and second reservoir has a reservoir wall surface, and wherein a portion of the reservoir wall surface of each respective first and second reservoir forms a common wall. 
   
   
       8 . The access port of  claim 7 , wherein at least a portion of the common wall extends substantially along a longitudinal axis of the body. 
   
   
       9 . The access port of  claim 8 , wherein at least a portion of the common wall extends substantially normal to the upper surface of the body. 
   
   
       10 . The access port of  claim 7 , wherein at least a portion of the common wall extends substantially parallel to the respective first and second body conduits. 
   
   
       11 . The access port of  claim 10 , wherein at least a portion of the first and second body conduits are defined therein a portion of the common wall. 
   
   
       12 . The access port of  claim 7 , wherein the at least one septum is substantially cylindrical, having a bottom portion and an opposed top portion, wherein the bottom portion of the septum defines a first male protrusion and a spaced second male protrusion, wherein the first male protrusion is configured to be sealingly seated within the upper portion of the first reservoir and the second male protrusion is configured to be sealingly seated within the upper portion of the second reservoir. 
   
   
       13 . The access port of  claim 12 , wherein the top portion of the septum defines a third male protrusion and a spaced fourth male protrusion, wherein at least a portion of the third male protrusion of the septum is configured to be at least partially received therein the first opening of the retainer and at least a portion of the second male protrusion is configured to be at least partially received therein the second opening of the retainer. 
   
   
       14 . The access port of  claim 7 , wherein the at least one septum comprises a first septum and a second septum. 
   
   
       15 . The access port of  claim 14 , wherein a bottom portion of the first septum is configured to be seated within a portion of the first reservoir, and wherein a bottom portion of the second septum is configured to be seated within a portion of the second reservoir. 
   
   
       16 . The access port of  claim 14 , wherein each of the first and second septum is substantially D-shaped. 
   
   
       17 . The access port of  claim 1 , wherein at least one of the body, the retainer, and the at least one septum comprises at least one feature that is structured to identify the access port subsequent to subcutaneous implantation. 
   
   
       18 . The access port of  claim 17 , wherein the at least one feature comprises at least one of: a protrusion, a protruding region, a circumferentially extending protrusion, a recess, a recessed region, a circumferentially extending recess, at least one suture aperture, an overhanging rim feature, a lip feature, an undulation, and adjacent features of different elevation. 
   
   
       19 . The access port of  claim 17 , wherein the at least one feature comprises a marking thereon the access port that is formed of material that is visible under application of x-ray or ultrasound technology. 
   
   
       20 . The access port of  claim 17 , wherein the at least one feature is configured to identify the access port as a CT port that is power injectable subsequent to subcutaneous implantation. 
   
   
       21 . The access port of  claim 1 , wherein at least one of the body, the retainer, and the at least one septum comprises means for identifying the access port subsequent to subcutaneous implantation. 
   
   
       22 . An implantable vascular access port, comprising:
 a body comprising:
 an upper surface; 
 an opposed lower surface; 
 a side wall extending therebetween the upper and lower surfaces, the side wall defining a pair of ports; 
 a first reservoir defined therein a portion of the upper surface of the body; 
 a second reservoir defined therein a portion of the upper surface of the body, wherein each of the first and second reservoirs are substantially D-shaped in cross-section, and wherein at least a portion of the respective first and second reservoir are separated by a common wall; 
 a first body conduit extending between the first reservoir and a first port of the pair of ports; and 
 a second body conduit extending between the second reservoir and a second port of the pair of ports; 
   at least one septum configured to be seated within an upper portion of at least one of the first or second reservoirs; and   a retainer defining a first retainer opening and a second retainer opening, wherein the first and second retainer openings are separated by a common dividing member, wherein the retainer is mountable thereon the body such that the first retainer opening overlies the first reservoir and the second retainer opening overlies the second reservoir, and wherein the at least one septum is sealingly secured therebetween the retainer and the body.   
   
   
       23 . The access port of  claim 22 , wherein the at least one septum is substantially cylindrical, having a bottom portion and an opposed top portion, wherein the bottom portion of the septum defines a first D-shaped male protrusion and a spaced second D-shaped male protrusion, wherein the first male protrusion is configured to be sealingly seated within the upper portion of the first reservoir and the second male protrusion is configured to be sealingly seated within the upper portion of the second reservoir. 
   
   
       24 . The access port of  claim 23 , wherein the top portion of the septum defines a third D-shaped male protrusion and a spaced fourth D-shaped male protrusion, wherein at least a portion of the third male protrusion of the septum is configured to be at least partially received therein the first opening of the retainer and at least a portion of the second male protrusion is configured to be at least partially received therein the second opening of the retainer. 
   
   
       25 . The access port of  claim 24 , wherein the bottom portion of the septum defines an upper shoulder surface extending about and between the respective first and second D-shaped male protrusions, which is configured to sealing seat against portions of the body when the retainer is connected to the body, and wherein the top portion of the septum defines a lower shoulder surface extending about and between the respective third and fourth D-shaped male protrusions, which is configured to sealing seat against portions of the retainer when the retainer is connected to the body. 
   
   
       26 . The access port of  claim 22 , further comprising an outlet stem comprising:
 a proximal end;   an opposing distal end;   a first stem conduit extending therethrough the outlet stem from the proximal end to the distal end; and   a second stem conduit extending therethrough the outlet stem from the proximal end to the distal end,   wherein the proximal portion of the stem is connected to and overlies the pair of ports such that the first body conduit is in fluid communication with the first stem conduit and the second body conduit is in fluid communication with the second stem conduit.   
   
   
       27 . The access port of  claim 26 , wherein at least a portion of the common wall extends substantially along a longitudinal axis of the body. 
   
   
       28 . The access port of  claim 27 , wherein at least a portion of the common wall extends substantially normal to the upper surface of the body. 
   
   
       29 . The access port of  claim 27 , wherein at least a portion of the common wall extends substantially parallel to the respective first and second body conduits. 
   
   
       30 . The access port of  claim 29 , wherein at least a portion of the first and second body conduits are defined therein a portion of the common wall. 
   
   
       31 . The access port of  claim 22 , wherein at least one of the body, the retainer, and the substantially cylindrical septum comprises means for identifying the access port subsequent to subcutaneous implantation. 
   
   
       32 . The access port of  claim 31 , wherein the means for identifying the access port subsequent to subcutaneous implantation comprises at least one of the following: a protrusion, a protruding region, a circumferentially extending protrusion, a recess, a recessed region, a circumferentially extending recess, at least one suture aperture, an overhanging rim feature, a lip feature, an undulation, and adjacent features of different elevation. 
   
   
       33 . The access port of  claim 31 , wherein the means for identifying the access port subsequent to subcutaneous implantation comprises a marking thereon the access port that is formed of material that is visible under application of x-ray or ultrasound technology. 
   
   
       34 . The access port of  claim 31 , wherein the means for identifying the access port subsequent to subcutaneous implantation is configured to identify the access port as a CT port that is power injectable subsequent to subcutaneous implantation. 
   
   
       35 . A system for use in apheresis, wherein the system comprises a vascular access port comprising:
 a body comprising:
 an upper surface; 
 an opposed lower surface; 
 a side wall extending therebetween the upper and lower surfaces, the side wall defining a pair of ports; 
 a first reservoir defined therein a portion of the upper surface of the body; 
 a second reservoir defined therein a portion of the upper surface of the body; 
 a first body conduit extending between the first reservoir and a first port of the pair of ports; and 
 a second body conduit extending between the second reservoir and a second port of the pair of ports; 
   at least one septum configured to be seated within an upper portion of at least one of the first or second reservoirs;   a retainer defining a first retainer opening and a second retainer opening, wherein the first and second retainer openings are separated by a common dividing member, wherein the retainer is mountable thereon the body such that the first retainer opening overlies the first reservoir and the second retainer opening overlies the second reservoir, and wherein the at least one septum is sealingly secured therebetween the retainer and the body;   at least one needle; and   a catheter in fluid communication with the pair of ports of the body, wherein the catheter comprises a catheter shaft, and wherein the catheter defines at least one lumen extending therethrough in fluid communication with at least one reservoir.   
   
   
       36 . The system of  claim 35 , wherein the at least one needle is at least 14 gauge in size. 
   
   
       37 . The system of  claim 35 , wherein the catheter shaft is at least 10 Fr in size. 
   
   
       38 . A method of identifying a subcutaneously implanted vascular access port, comprising:
 a) providing a subcutaneously implanted vascular access port comprising:
 a body comprising: 
 an upper surface; 
 an opposed lower surface; 
 a side wall extending therebetween the upper and lower surfaces, the side wall defining a pair of ports; 
 a first reservoir defined therein a portion of the upper surface of the body; 
 a second reservoir defined therein a portion of the upper surface of the body; 
 a first body conduit extending between the first reservoir and a first port of the pair of ports; and 
 a second body conduit extending between the second reservoir and a second port of the pair of ports; 
 at least one septum configured to be seated within an upper portion of at least one of the first or second reservoirs; and 
 a retainer defining a first retainer opening and a second retainer opening, wherein the first and second retainer openings are separated by a common dividing member, wherein the retainer is mountable thereon the body such that the first retainer opening overlies the first reservoir and the second retainer opening overlies the second reservoir, and wherein the at least one septum is sealingly secured therebetween the retainer and the body; and 
   b) perceiving at least one feature of at least one of the body, the retainer, and the at least one septum of the subcutaneously implanted vascular access port; and   c) identifying the subcutaneously implanted vascular access port in response to perceiving the at least one feature of the at least one of the body, the retainer, and the at least one septum.   
   
   
       39 . The method of  claim 38 , wherein perceiving the at least one feature comprises employing at least one of palpation, x-ray, ultrasound, and RFID technology. 
   
   
       40 . The method of  claim 38 , wherein perceiving the at least one feature comprises perceiving at least one of the following: a protrusion, a protruding region, a circumferentially extending protrusion, a recess, a recessed region, a circumferentially extending recess, at least one suture aperture, an overhanging rim feature, a lip feature, an undulation, and adjacent features of different elevation. 
   
   
       41 . The method of  claim 38 , wherein identifying the subcutaneously implanted vascular access port comprises identifying the subcutaneously implanted vascular access port as being a CT port that is power injectable in response to perceiving the at least one feature.