Deflation and removal of implantable medical devices
View Patent ↗A deflation catheter device, comprising: a catheter tube having a proximal end and a distal end; a stylet disposed within the catheter tube; a stylet handle attached to the stylet; and a y-connector disposed near a proximal end of the catheter tube, configured to provide fluid communication from the distal end of the catheter tube and a suction port, and configured to provide access for the stylet from the proximal end of the catheter tube to the distal end of the catheter tube.
1. A deflation catheter device, comprising:
a catheter tube having a lumen, a proximal end, a distal end, and wall extending between the proximal and distal ends, wherein the catheter tube includes an aspiration hole configured to provide fluid communication between an interior of an implanted balloon device and the lumen of the catheter tube while the aspiration hole is extended within the implanted balloon device, and wherein the aspiration hole includes at least one side hole in the wall of the catheter tube between the proximal and distal ends of the catheter tube;
a stylet slideably disposed within the lumen of the catheter tube and configured to extend beyond the distal end of the catheter tube to puncture a wall of the implanted balloon device, wherein the aspiration hole is configured to provide fluid communication between the interior of the implanted balloon device and the lumen when the stylet is disposed within the lumen and wherein the aspiration hole further comprises a hole at the distal end of the catheter tube and the stylet, and wherein the gap is configured to provide fluid communication between the lumen of the catheter tube and an interior of the implanted balloon device while extended within the implanted balloon device;
a handle disposed at a proximal end of the catheter tube and attached to the stylet, wherein the handle is configured to controllably advance, retract, and rotate the stylet relative to the catheter tube; and
a suction port disposed at a proximal end of the catheter tube and being m fluid communication with the lumen of the catheter tube.
2. The deflation catheter device of claim 1 , further comprising a seal between the catheter tube and the handle, wherein the stylet crosses the seal from the handle to the lumen of the catheter tube without introducing leaks or pressure losses.
3. The deflation catheter device of claim 1 , further comprising an interface between the handle and a base of the catheter tube configured to guide advancement, retraction, and rotation of the stylet relative to the catheter tube.
4. The deflation catheter device of claim 3 , wherein the interface is complementary threading.
5. The deflation catheter device of claim 1 , wherein the gap is configured for aspiration occurring between the catheter tube and the stylet.
6. The deflation catheter device of claim 1 wherein the at least one side hole is configured for suction of fluid into the catheter tube when the stylet is fully occluding, partially occluding or not occluding a distal tip opening in the distal end of the catheter tube.
7. A deflation catheter device, comprising:
a catheter tube having a lumen, a proximal end, a distal end, and wall extending between the proximal and distal ends, wherein the catheter tube includes an aspiration hole configured to provide fluid communication between an interior of an implanted balloon device and the lumen of the catheter tube while the aspiration hole is extended within the implanted balloon device, and wherein the aspiration hole includes at least one side hole in the wall of the catheter tube between the proximal and distal ends of the catheter tube;
a hollow needle device comprising a sharpened needle tip at a distal end of the needle device, wherein the hollow needle device is slideably disposed within the lumen of the catheter tube and configured to extend beyond the distal end of the catheter tube to puncture a wall of an implanted balloon device, wherein the aspiration hole is configured to provides fluid communication between the interior of the implanted balloon device and the lumen when the hollow needle device is disposed within the lumen;
a handle disposed at a proximal end of the catheter tube and attached to the hollow needle device, wherein the handle is configured to controllably advance, retract, and rotate the needle device relative to the catheter tube; and
a suction port disposed at a proximal end of the catheter tube and being in fluid communication with the lumen of the catheter tube.
8. The deflation catheter device of claim 7 , wherein the needle device further comprises:
a channel extending axially within the needle device; and
an obturator within the channel.
9. The deflation catheter device of claim 8 , wherein a smooth transition from the needle tip to a portion of the obturator is provided when the obturator is in an extended state.
10. The deflation catheter device of claim 9 , further comprising a spring in the channel tending to place the obturator in the extended state.
11. The deflation catheter device of claim 9 , wherein the sharpened needle tip is exposed and the smooth transition removed when the obturator is in a retracted state.
12. The deflation catheter device of claim 11 , wherein the obturator is configured to be retracted by retracting a portion thereof at a proximal end of the catheter tube.
13. The deflation catheter device of claim 11 , wherein the obturator is configured to be retracted by applying low pressure within the channel relative to a pressure exterior to the channel.
14. The deflation catheter device of claim 11 , wherein the obturator is configured to be retracted by pressing it against the implanted balloon device.
15. The deflation catheter device of claim 7 wherein the aspiration hole further comprises a hole at the distal end of the catheter tube defined by a gap between the distal end of the catheter tube and the hollow needle device, wherein the gap is configured to provide fluid communication between the lumen of the catheter tube and an interior of the implanted balloon device while extended within the implanted balloon device.
16. The deflation catheter device of claim 15 wherein the gap is configured for aspiration occurring between the catheter tube and the hollow needle device.
17. The deflation catheter device of claim 7 wherein the at least one side hole is configured for suction of fluid into the catheter tube when the hollow needle device is fully occluding, partially occluding or not occluding a distal tip opening in the distal end of the catheter tube.