Multi-lumen catheter with attachable hub

Abstract

The present invention is a multi-lumen catheter assembly having an selectively attachable hub including a multi-lumen catheter tube that has a proximal portion and a distal portion and a hub assembly that has a proximal portion and a distal portion, whereby the distal portion of the catheter tube is selectively attachable to the proximal portion of the hub assembly after subcutaneous insertion of the proximal portion of the catheter tube into a patient.

What is claimed is:  
     
         1 . A multi-lumen catheter assembly having an selectively attachable hub, comprising: 
 a multi-lumen catheter tube having a proximal portion and a distal portion; and    a hub assembly having a proximal portion and a distal portion,    wherein the distal portion of the catheter tube is selectively attachable to the proximal portion of the hub assembly after subcutaneous insertion of the proximal portion of the catheter tube into a patient.    
     
     
         2 . The multi-lumen catheter assembly of  claim 1 , wherein the catheter tube has a first lumen and a second lumen, and wherein the hub assembly is further comprised of: 
 a first cannula and a second cannula, wherein each of the cannulae has a proximal portion and a distal portion, the proximal portion of the first cannula being connectable with the first lumen of the catheter tube, and the proximal portion of the second cannula being connectable with the second lumen of the catheter tube, to provide for fluid communication therebetween;    a first extension tube and a second extension tube, wherein each of the extension tubes has a proximal portion and a distal portion, and wherein the proximal portion of the first extension tube is connectable with the distal portion of the first cannula, and the proximal portion of the second extension tube is connectable with the distal portion of the second cannula, to provide fluid communication therebetween; and    a first connector and a second connector, the first connector being securely attached to the distal portion of the first extension tube and the second connector being securely attached to the distal portion of the second extension tube,    wherein each of the connectors are attachable to a fluid conveying device to provide fluid flow between the hub assembly and the catheter tube.    
     
     
         3 . The multi-lumen catheter assembly of  claim 2 , wherein the proximal portion of each of the first and second cannulae have a generally D-shaped cross-section and the distal portion of each of the first and second cannulae have a generally O-shaped cross-section.  
     
     
         4 . The multi-lumen catheter assembly of  claim 3 , wherein the proximal portions of each of the extension tubes have a generally O-shaped cross-section and are configured to receive the distal portion of a respective cannulae.  
     
     
         5 . The hub assembly of  claim 2  further comprising: 
 a hub body formed about the connection between the proximal portion of each extension tube with the distal portion of each cannula.  
 
     
     
         6 . The multi-lumen catheter assembly of  claim 5 , further comprising: 
 a connection cover having a proximal portion and a distal portion, wherein the cover fits axially about the distal portion of the catheter tube; and    a compression sleeve, the compression sleeve fitting axially about the distal portion of the catheter tube and the proximal portion of the first and second cannulae;    wherein the distal end of the cover is selectively connectable to the hub assembly.    
     
     
         7 . The multi-lumen catheter assembly of  claim 6 , wherein the hub body has a proximal portion and a distal portion, the proximal portion of the hub body being selectively attachable to the distal portion of the connection cover, such that the catheter tube is securely attached to the hub assembly.  
     
     
         8 . The multi-lumen catheter of  claim 2 , wherein the angle between the first cannula and the second cannula is about 15 degrees.  
     
     
         9 . The multi-lumen catheter of  claim 1 , wherein the proximal portion of the catheter tube further comprises 
 a first and second lumen, each of the first and second lumens having a generally D-shaped cross-section, wherein each of the first and second lumens transition toward the distal portion of the catheter tube into a single lumen having a longitudinally extending septum.    
     
     
         10 . The multi-lumen catheter of  claim 2 , wherein 
 a first indicator is associated with a first lumen, the first cannula, and the first connector; and    a second indicator is associated with a second lumen, the second cannula, and the second connector;    such that the first indicator and the second indicator define a matching correspondence between the lumens, the cannulae, and the connectors.    
     
     
         11 . A multi-lumen catheter assembly having a selectively attachable hub, comprising: 
 a) a multi-lumen catheter tube having a proximal portion and a distal portion and a first lumen and a second lumen; and    b) a hub assembly, the hub assembly further comprising: 
 i) a first cannula and a second cannula, wherein each of the cannulae has a proximal portion of D-shaped cross-section and a distal portion of O-shaped cross-section, the proximal portion of the first cannula being connectable with the first lumen of the catheter tube, and the proximal portion of the second cannula being connectable with the second lumen of the catheter tube, to provide for fluid communication therebetween;  
 ii) a first extension tube and a second extension tube, wherein each of the extension tubes has a proximal portion and a distal portion, and wherein the proximal portion of the first extension tube has an O-shaped cross-section and is connectable with the distal portion of the first cannula, and the proximal portion of the second extension tube has an O-shaped cross-section and is connectable with the distal portion of the second cannula, to provide fluid communication therebetween;  
 iii) a first connector and a second connector, the first connector being securely attached to the distal portion of the first extension tube and the second connector being securely attached to the distal portion of the second extension tube; and  
 iv) a hub body having a proximal portion and a distal portion, the hub body being formed about the connection between the proximal portions of each of the first and second extension tubes with the distal portions of each of the first and second cannulae, respectively;  
 v) a first indicator is associated with a first lumen, the first cannula, and the first connector; and a second indicator is associated with a second lumen, the second cannula, and the second connector, such that the first indicator and the second indicator define a matching correspondence between the lumens, the cannulae, and the connectors;  
   c) a connection cover having a proximal portion and a distal portion, wherein the cover fits axially about the distal portion of the catheter tube; and    d) a compression sleeve, the compression sleeve fitting axially about the distal portion of the catheter tube and the proximal portion of the first and second cannulae;    wherein the proximal portion of the hub body being selectively attachable to the distal portion of the connection cover, such that the catheter tube is selectively attachable to the hub assembly after insertion of the proximal portion of the catheter tube into a patient.