Resectoscope systems and methods

1. A surgical device comprising:

a shaft portion that extends along a longitudinal axis and that is configured to be inserted into a patient's body, the shaft portion comprising:

an outer sheath,

an inner shaft provided within the outer sheath,

a surgical tool provided within the outer sheath and configured to be movable along the longitudinal axis, and

an optical assembly provided at a distal end of the inner shaft, the optical assembly including a light source and an imaging sensor; and

a handle portion that is coupled to a proximal end of the shaft portion, the handle portion including a manipulator that is configured to be manipulated by a user to move the surgical tool along the longitudinal axis,

wherein a first channel that extends along the longitudinal axis is defined by one or both of the outer sheath and the inner shaft, the first channel providing a first flow path between the proximal end of the shaft portion and a first opening provided at a distal end of the shaft portion, the first opening being provided between the optical assembly and the inner shaft to partially surround the optical assembly on three sides,

wherein a second channel that extends along the longitudinal axis is defined by one or both of the outer sheath and the inner shaft, the second channel providing a second flow path between the proximal end of the shaft portion and a second opening provided at the distal end of the shaft portion, the second flow path being distinct from the first flow path,

wherein the optical assembly is provided at a distal end of the first channel to thereby partially block and divert the first flow path around the optical assembly to the first opening, the first opening and the optical assembly being configured to direct turbulent fluid flow (i) around the light source and the imaging sensor and (ii) across a distal surface of the optical assembly,

wherein the surgical tool is provided in the second channel and configured to be extended out of or retracted into the outer sheath via the second opening; and

wherein the first channel is configured to impinge fluid against a proximal surface of the optical assembly, the proximal surface facing the proximal end of the shaft portion.

2. The surgical device of claim 1 , wherein the optical assembly protrudes radially inward from an interior surface of the first channel.

3. The surgical device of claim 1 , wherein the turbulent fluid flow through the first opening across the distal surface of the optical assembly facilitates a rinsing of the distal surface of the optical assembly.

4. The surgical device of claim 1 , wherein a cross-sectional area of the first channel is greater than a cross-sectional area of the first opening.

5. The surgical device of claim 1 , wherein the first opening is configured to inject fluid to a surgical site, and wherein the second opening is configured to remove fluid and biologics from the surgical site.

6. The surgical device of claim 5 , wherein the handle portion includes:

a first port that is in fluid connection with the first channel and that is configured to introduce fluid into the first channel, and

a second port that is in fluid connection with the second channel and that is configured to extract fluid and biologics from the second channel.

7. The surgical device of claim 1 , wherein the surgical tool is a high-frequency (HF) electrode that is configured to be connected to an HF power supply.

8. The surgical device of claim 7 , wherein the high-frequency electrode is configured to operate in a monopolar mode based on being connected to a monopolar power supply and configured to operate in a bipolar mode based on being connected to a bipolar power supply.

9. The surgical device of claim 8 , wherein the high-frequency electrode is connected to a monopolar supply cable to operate in a monopolar mode.

10. The surgical device of claim 8 , wherein the high frequency electrode is connected to a biopolar power supply cable to operate in a bipolar mode.

11. The surgical device of claim 1 , wherein the manipulator is a thumb loop that is configured to be manipulated by sliding along a first axis to thereby move the surgical tool along the longitudinal axis, the thumb loop being configured to freely rotate about the first axis.

12. The surgical device of claim 1 , wherein a distal-most end of the inner shaft includes a cap portion that protrudes distally beyond a distal-most end of the outer sheath, the first and second openings being defined in the cap portion.

13. The surgical device of claim 1 , wherein the outer sheath, the inner shaft, and the handle portion are injection molded.

14. The surgical device of claim 1 , wherein the outer sheath, the inner shaft, and the handle portion are made from one or more materials that cannot be sterilized at temperatures greater than 120° C.

15. The surgical device of claim 1 , wherein the imaging sensor is a CMOS sensor that is provided at the distal end of the inner shaft.

16. The surgical device of claim 1 , wherein the light source is a light emitting diode (LED) that is provided at the distal end of the inner shaft.

17. The surgical device of claim 1 , wherein the outer sheath is slidably coupled to the inner shaft.

18. The surgical device of claim 1 , wherein the outer sheath is integrally formed with the inner shaft.

19. The surgical device of claim 1 , wherein the distal end of the inner shaft comprises an atraumatic tip.

20. The surgical device of claim 1 , wherein the optical assembly is integrally formed with the inner shaft.