Flooded liquefaction hand piece engine
View Patent ↗In various embodiments, an ophthalmic handpiece may include a handpiece body with a pulse chamber and flooded engine compartment configured to receive fluid from a surgical console through a fluid inlet port. Heated pulses from the pulse chamber and cooler fluid from the flooded engine compartment may flow through a tip into the eye. In some embodiments, the tip may be a dual lumen tip that keeps the flows from the pulse chamber and flooded engine compartment separate until they exit the tip. In some embodiments, a tip, coupled to a merging chamber where the flows may merge prior to the tip, may be a single lumen tip that directs the heated pulses and irrigation fluid simultaneously to a lens to liquefy the lens for removal from the eye.
1. A handpiece, comprising:
a handpiece body;
a pulse chamber configured to receive fluid from a fluid inlet port, wherein the pulse chamber is located in the handpiece body and at least partially bounded by a pair of electrodes, wherein the electrodes are configured to deliver a current to a fluid in the pulse chamber to cause the fluid to boil and exit the pulse chamber;
a flooded engine compartment configured to receive fluid from the fluid inlet port; and
a tip, fluidly coupled to the pulse chamber and the flooded engine compartment and configured to direct the fluid from the pulse chamber and the flooded engine compartment out of the handpiece;
a merging chamber configured to receive heated fluid from the pulse chamber and fluid from the flooded engine compartment;
wherein the tip is coupled to the merging chamber, wherein the tip is configured to direct the fluid received in the merging chamber out of the handpiece body.
2. The handpiece of claim 1 ,
wherein the tip is a single lumen tip.
3. The handpiece of claim 1 , wherein the heated fluid from the pulse chamber and the fluid from the flooded engine compartment mix in the merging chamber such that a temperature of the mixed fluid is between a temperature of the heated fluid from the pulse chamber and a temperature of the fluid from the flooded engine compartment.
4. The handpiece of claim 1 , wherein fluid is capable of flowing through the flooded engine compartment, the merging chamber, and then into the pulse chamber during an initial priming process before current is directed to fluid in the pulse chamber.
5. The handpiece of claim 1 , wherein the flooded engine compartment is in thermal contact with the pulse chamber such that fluid in the flooded engine compartment receives heat from the pulse chamber.
6. The handpiece of claim 1 , further comprising a check valve, wherein the check valve is configured to inhibit fluid flow from the pulse chamber toward the fluid inlet port.
7. The handpiece of claim 6 , wherein the check valve is configured to be wetted by fluid flow from the fluid inlet port to the flooded engine compartment such that if the check valve were stuck due to a salt bond, the check valve would become unstuck via the wetting.
8. The handpiece of claim 1 , wherein the flooded engine compartment surrounds the exterior of the pulse chamber.
9. The handpiece of claim 1 , wherein the tip is configured to simultaneously provide the heated pulses and irrigation fluid.
10. An ophthalmic handpiece configured to direct heated pulses at a lens to liquefy the lens for removal from an eye, comprising:
a handpiece body configured to receive fluid through a fluid inlet port from a surgical console;
a pulse chamber configured to receive fluid from the fluid inlet port, wherein the pulse chamber is located in the handpiece body and at least partially bounded by a pair of electrodes, wherein the electrodes are configured to deliver a current to a fluid in the pulse chamber to cause the fluid to boil and exit the pulse chamber;
a check valve, wherein the check valve is configured to inhibit fluid flow from the pulse chamber toward the fluid inlet port;
a flooded engine compartment configured to receive fluid from the fluid inlet port; and
a tip, fluidly coupled to the pulse chamber and the flooded engine compartment and configured to direct the fluid from the pulse chamber and the flooded engine compartment out of the handpiece;
a merging chamber configured to receive heated fluid from the pulse chamber and fluid from the flooded engine compartment, wherein the heated fluid from the pulse chamber and the fluid from the flooded engine compartment mix in the merging chamber such that a temperature of the mixed fluid is between a temperature of the heated fluid from the pulse chamber and a temperature of the fluid from the flooded engine compartment; and
wherein the tip is coupled to the merging chamber, wherein the tip is configured to provide the mixed fluid to a lens to liquefy the lens for removal from the eye.
11. The handpiece of claim 10 ,
wherein the tip is a single lumen tip coupled to the merging chamber.
12. The handpiece of claim 10 , wherein fluid is capable of flowing through the flooded engine compartment, the merging chamber, and then into the pulse chamber during an initial priming process before current is directed to fluid in the pulse chamber.
13. The handpiece of claim 10 , wherein the tip is a dual lumen tip.
14. The handpiece of claim 10 , wherein the flooded engine compartment is in thermal contact with the pulse chamber such that fluid in the flooded engine compartment receives heat from the pulse chamber.
15. The handpiece of claim 10 , wherein the check valve is configured to be wetted by fluid flow from the fluid inlet port to the flooded engine compartment such that if the check valve were stuck due to a salt bond, the check valve would become unstuck via the wetting.
16. The handpiece of claim 10 , wherein the flooded engine compartment surrounds the exterior of the pulse chamber.