Methods and systems of variable aspiration control in surgical procedures

Patent metadata

Field	Value
Publication number	US-11998676-B2
Application number	US-202118247323-A
Country	US
Kind code	B2
Filing date	Oct 26, 2021
Priority date	Oct 26, 2020
Publication date	Jun 4, 2024
Grant date	Jun 4, 2024

Abstract

Variable aspiration control in surgical procedures. At least one example is a method of performing a surgical procedure, the method comprising: driving, by a surgical controller, a motor within a handpiece coupled to a resection instrument, the driving causes mechanical resection of tissue by the resection instrument; aspirating, by a peristaltic pump associated with the surgical controller, fluid and tissue fragments through a suction lumen of the resection instrument during the resection of tissue; and modulating, by the surgical controller, speed of the peristaltic pump during the driving and aspirating, the modulating responsive to an interface device defined on an exterior surface of the handpiece.

First claim

What is claimed is:

1. A surgical system comprising:
a resection controller coupled to a motor in a handpiece, and the handpiece coupled to a resection instrument defining a cutting element, and the handpiece comprises an interface device defined on an exterior surface of the handpiece;
a peristaltic pump controller coupled to a motor of a peristaltic pump, the peristaltic pump coupled to a suction lumen of the resection instrument;
the surgical system is configured to:
drive the motor within the handpiece to cause mechanical resection of tissue by the resection instrument;
aspirate fluid and tissue fragments through the suction lumen of the resection instrument during the mechanical resection of tissue; and
modulate a speed of the peristaltic pump during the driving and aspirating, wherein the modulation is responsive to the interface device by the surgical system being configured to
read the interface device, wherein the interface device is a positional-interface device defined on the handpiece, and wherein the reading results in a position associated with the positional-interface device, and
set the speed of the peristaltic pump based on the position such that the speed of the peristaltic pump is directly and exclusively controlled based on the position.

2. The surgical system of claim 1 wherein the handpiece does not include a valve in an aspiration pathway through the handpiece.

3. The surgical system of claim 1 further comprising:
an electrosurgical controller coupled to an active electrode defined on the resection instrument;
the surgical system is further configured to:
stop the motor of the handpiece at a rotational position such that the cutting element blocks a cutting window defined by the resection instrument; and then
provide electrical energy to the active electrode to cause ablation of tissue proximate to the active electrode.

4. The surgical system of claim 3 wherein the surgical system is further configured to modulate speed of the peristaltic pump during the ablation of tissue, the modulation responsive to the interface device.

5. The surgical system of claim 3 wherein the surgical system is further configured to:
cease the providing of electrical energy to the active electrode; and then
drive the motor within the handpiece, the driving again causes mechanical resection of tissue by the resection instrument; and
aspirate fluid and tissue fragments through the suction lumen at a pump speed selected based on at least one selected from a group comprising: a pump speed of an immediately previous mechanical resection; and a default pump speed for mechanical resection of tissue.

6. A surgical system comprising:
an electrosurgical controller coupled to an active electrode disposed on a distal end of a resection tool;
a peristaltic pump controller comprising a motor and a peristaltic pump, the peristaltic pump coupled to a suction lumen of the resection tool;
wherein the surgical system is configured to:
provide electrical energy to the active electrode to cause ablation of tissue proximate to the active electrode;
draw fluid and tissue fragments through the suction lumen; and
modulate speed of the peristaltic pump during the providing and the drawing, the modulation responsive to an interface device defined on an exterior surface of the resection tool by the surgical system being configured to
read a position of the interface device, wherein the interface device is a positional-interface device defined on the resection tool, and wherein the reading results in a position associated with the positional-interface device, and
set the speed of the peristaltic pump based on the position such that the speed of the peristaltic pump is directly and exclusively controlled based on the position.

7. The surgical system of claim 6 further comprising:
a resection controller coupled to a motor in a handpiece of the resection tool, and the handpiece coupled to a cutting element defined by a resection instrument of the resection tool, the resection instrument coupled to the handpiece;
the surgical system is further configured to:
cease the providing of electrical energy to the active electrode; and then
drive the motor within the handpiece, the driving causes mechanical resection of tissue by the resection instrument; and
aspirate fluid and tissue fragments through the suction lumen of the resection instrument during the mechanical resection of tissue; and
modulate speed of the peristaltic pump during the driving and aspirating, the modulation based on the interface device.

8. The surgical system of claim 7 wherein the handpiece does not include a valve in an aspiration pathway through the handpiece.

9. A surgical system comprising:
an electrosurgical controller coupled to an active electrode disposed on a distal end of a resection tool;
a peristaltic pump controller comprising motor and a peristaltic pump, the peristaltic pump coupled to a suction lumen of the resection tool;
wherein the surgical system is configured to:
provide electrical energy to the active electrode to cause ablation of tissue proximate to the active electrode;
draw fluid and tissue fragments through the suction lumen; and
receive an indication of a selected mode of operation from a plurality of modes of operation, each mode of operation defines a range of pump speeds, and each range of pump speeds less than an entire range of pump speed of the peristaltic pump; and
modulate, within the range of pump speeds of the selected mode of operation, a speed of the peristaltic pump during the providing and the drawing, wherein the modulation is responsive to an interface device defined on an exterior surface of the resection tool by the surgical system being configured to
read a position of the interface device, wherein the interface device is a positional-interface device defined on the resection tool, wherein the reading results in a position, and
set the speed of the peristaltic pump within the range of pump speeds of the selected mode of operation based on the position.

10. The surgical system of claim 9 further comprising:
a resection controller coupled to a motor in a handpiece of the resection tool, and the handpiece coupled to a cutting element defined by a resection instrument of the resection tool, the resection instrument coupled to the handpiece;
the surgical system is further configured to:
cease the providing of electrical energy to the active electrode; and then
drive the motor within the handpiece, the driving causes mechanical resection of tissue by the resection instrument; and
aspirate fluid and tissue fragments through the suction lumen of the resection instrument during the mechanical resection of tissue; and
modulate speed of the peristaltic pump during the driving and aspirating, the modulation based on the interface device.

11. The surgical system of claim 10 wherein the handpiece does not include a valve in an aspiration pathway through the handpiece.

Assignees

• Smith & Nephew Inc
• Smith & Nephew Orthopaedics Ag

Inventors

• Lynn Christopher J
• Goode Johnson E

Classifications

• A61M1/75 Primary

  Intermittent or pulsating suction (A61M1/63, A61M1/772 take precedence) · CPC title

• A61B17/3205

  Excision instruments · CPC title

• A61B18/14 Primary

  Probes or electrodes therefor · CPC title

• A61B18/148

  having a short, rigid shaft for accessing the inner body transcutaneously, e.g. for neurosurgery or arthroscopy · CPC title

• A61M1/76

  Handpieces (specially for suction-irrigation A61M1/774, aspiration tips A61M1/84) · CPC title