Implantable pump connector for catheter attachment
View Patent ↗A catheter system for locking a catheter to an implantable pump and for effectively flushing a catheter after implantation within a body. A locking component comprises an extension boot and catheter lock that together fluidly connect the catheter to the pump in a secure, safe and effective manner. A catheter component comprises a design having kink-resistant walls and a unique tip. A flushing component comprises a hub and stylet combination characterized by a hydrophilic coating on the stylet and a flush through hub to allow flushing of the stylet while inside the catheter.
1. A connection device for attaching a catheter to an implantable port or pump, wherein the catheter is in fluid communication with said port or pump, comprising: a coupling device for extending from said port or pump, comprising an arm portion and a stem, wherein the shape of the arm portion is substantially similar to an outer contour of said port or pump, and wherein the stem comprises a base portion and a tip portion, said base portion having a forward portion having a forward portion diameter and an engaging locking portion having varying engaging locking portion diameters including a largest engaging locking portion diameter that is larger than said forward portion diameter, said stem further comprising a connecting portion connecting said base portion to said arm, said connecting portion having a diameter smaller than said largest engaging locking portion diameter, said tip portion having a tip portion diameter; and a locking device slideable along a length of the catheter, comprising varying diameter portions that communicate directly with diameters of the base portion of the stem, said locking device including a first diameter portion larger than said tip portion diameter, a second diameter portion for mating with said forward portion, a third diameter portion substantially equal to said largest engaging locking portion diameter, and a fourth diameter portion smaller than said largest engaging locking portion diameter, whereby when said catheter is inserted onto said tip portion and said locking device is slid onto said stem, a primary locking connection and fluid seal are created in said first diameter portion between said tip portion and said catheter, a secondary locking connection is established in said third diameter portion, and said connecting portion is positioned in said fourth diameter portion, wherein said primary and secondary locking connection are achieved without requiring rotation of said locking device relative to said stem, and whereby lateral movement of said catheter is prevented.
2. The connection device according to claim 1 , wherein the diameter of the forward portion is constant.
3. The connection device according to claim 1 , wherein the diameter of the engaging portion tapers down to the diameter of the forward portion.
4. The connection device according to claim 1 , wherein the tip portion of the stem comprises a barbed end, having a diameter larger than a lumen of the catheter.
5. The connection device according to claim 1 , wherein an audible confirmation is provided upon establishment of said locking connection.
6. The connection device according to claim 1 , wherein a tactile confirmation is provided upon establishment of said locking connection.
7. The connection device according to claim 1 , wherein the arm portion is comprised of a flexible material and is biased to a resting position in close proximity to said port or pump, wherein said arm portion is movable to a connecting position away from said port or pump, and wherein said arm portion retracts to said resting position upon release from said connecting position.
8. The connection device according to claim 1 , wherein the stem is comprised of titanium.
9. The connection device according to claim 1 , wherein the stem is comprised of stainless steel.
10. The connection device according to claim 1 , wherein the locking device is comprised of plastic.
11. The connection device according to claim 1 , wherein the locking device comprises a radiopaque portion.
12. The connection device according to claim 11 , wherein the radiopaque portion comprises a metal ring.
13. The connection device according to claim 11 , wherein the radiopaque portion comprises radiopaque ink.
14. The connection device according to claim 1 , wherein said first diameter portion of the locking device is adjacent the second diameter portion of said locking device.
15. The connection device according to claim 14 , wherein said third diameter portion is adjacent the second diameter portion of said locking device.
16. The connection device according to claim 15 , wherein said fourth diameter portion is adjacent the third diameter portion of said locking device.
17. The connection device according to claim 16 , wherein adjacent the diameter of said fourth diameter portion is less than the diameter of the third diameter portion.
18. The connection device of claim 1 , wherein said fourth diameter portion is defined by a wall having slits formed therein to facilitate movement of said wall over said portion of said stem having said largest engaging locking portion diameter.