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1. WO2002024054 - ENDOSCOPIC SUCTION-IRRIGATION INSTRUMENT FOR SURGERY

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[ EN ]

CLAIMS

1. An endoscopic instrument for surgery comprising: a sheath (12) having an internal fluid passage;
a manually graspable handle (16) which is elongated
along a handle axis and having upper and lower
ends when the handle axis is vertical;
a coupling (14) located adjacent the lower end of the handle, the coupling rigidly connecting the
handle to the sheath at an intermediate location along the length of the sheath and holding the
sheath in oblique relationship to the handle
axis; and
a projection (86a) extending laterally from a
location adjacent the upper end of the handle
for supporting the instrument by engagement with a portion of a surgeon's hand when the hand is
not tightly grasping the handle.

2. An endoscopic instrument for surgery according to claim 1, including a hook (86) , the hook comprising, as a first part thereof, said laterally extending projection (86a), and a second part (86b) extending, from the
laterally extending projection, alongside the handle (16) in spaced relation to the handle.

3. An endoscopic instrument for surgery according to claim 1, in which the angle between the handle axis and the sheath (12) is adjustable.

4. An endoscopic instrument for surgery according to claim 1, in which the angle between the handle axis and the sheath (12) is approximately 30 degrees.

5. An endoscopic instrument for surgery according to claim 1, in which the handle (16) contains manually operable fluid valves connected to the fluid passage of the sheath through said coupling.

6. An endoscopic instrument for surgery according to claim 1, also including a telescope having a telescope shaft (25) extending through at least a part of said sheath (12) , wherein the fluid passage of the sheath surrounds the telescope shaft.

7. An endoscopic instrument for surgery according to claim 1, in which said sheath (12) is removably
connected to said coupling (14) by a fluid-tight fitting (30, 31a, 31b) , and in which said coupling has an internal passage (35) connected to said sheath through said fluid-tight fitting.

8. An endoscopic instrument for surgery according to claim 1, in which said sheath (12) is removably
connected to said coupling (14) by a fitting comprising a pair of axially spaced, frusto-conical, surfaces (30a, 30b) formed on the exterior of the sheath, and in which said coupling (14) has an internal passage (35) connected to said sheath, and seals (31a, 31b) mating with said axially spaced, frusto-conical surfaces of the sheath in fluid-tight relationship.

9. An endoscopic instrument for surgery according to claim 1, in which the handle (16) contains a pair of fluid valves (62, 64) connected to the fluid passage of the sheath through said coupling (14), and in which the handle has a pair of manually depressible buttons ( 66, 68), for respectively operating the fluid valves, the buttons projecting upwardly from the upper end of the handle.

10. An endoscopic instrument for surgery according to claim 1, in which the projection (86a) extends from a first side of the handle (16) , in which the handle is provided, adjacent its lower end, with two fittings (38, 40) respectively on second and third sides of the handle, the second and third sides being opposite each other and each being adjacent said first side, and in which the coupling (14) is removably connectible to either of said two fittings .

11. An endoscopic instrument for surgery comprising: a tubular sheath (12) extending along a sheath axis, the sheath having an internal passage for
receiving a telescope, the internal passage
extending from a proximal, telescope-receiving
opening (24) to a distal tip (20), and a port
(32) for connection to suction and irrigation
lines;
a handle (16) having a manually graspable external
surface;
a suction valve (64) within the handle, the suction
valve being connectible to a suction line (80)
and openable to provide fluid communication
between said port and the suction line;
an irrigation valve (62) within the handle, the
irrigation valve being connectible to an
irrigation line (76) and openable to provide
fluid communication between said port and the
irrigation line;

manually operable controls (66, 68) on the handle for selectably opening the suction and irrigation
valves; and
a coupling (14) rigidly connecting the handle to the sheath at an intermediate location along the
length of the sheath between the proximal
opening and the distal tip (20);
wherein the handle is elongated along a handle axis
which is oblique relative to the sheath axis,
the handle axis forming an acute angle relative to the portion of the sheath axis between the
proximal opening of the sheath passage and said intermediate location.

12. An endoscopic instrument for surgery according to claim 11, including a suction fitting (78) on the suction valve (64), a suction line (80) connected to the suction fitting, an irrigation fitting (74) on the
irrigation valve (62), and an irrigation line (76) connected to the irrigation valve, the suction and
irrigation fittings extending in a direction transverse to a plane defined by the handle axis and the sheath axis.

13. An endoscopic instrument for surgery according to claim 11, in which the angle between the handle axis and the sheath (12) is adjustable.

14. An endoscopic instrument for surgery according to claim 11, in which the angle between the handle axis and the sheath (12) is selectable from a limited number of discrete angles.

15. An endoscopic instrument for surgery according to claim 11, in which the angle between the handle axis and the sheath axis is approximately 30 degrees.

16. An endoscopic instrument for surgery according to claim 11, in which said port (32) of the sheath (12) is located at an intermediate location between the proximal (24) opening and the distal tip (20) of the internal passage of the sheath, and in which said coupling (14) has an internal passage (35) connected to said port of the sheath.

17. An endoscopic instrument for surgery according to claim 11, in which said sheath (12) is removably connected to said coupling by a fluid-tight fitting (30, 31a, 31b) , in which said port of the sheath is located at an intermediate location between the proximal opening (24) and the distal tip (20) of the internal passage of the sheath, and in which said coupling (14) has an internal passage (35) connected to said port of the sheath through said fluid-tight fitting.

18. An endoscopic instrument for surgery according to claim 11, in which said sheath (12) is removably connected to said coupling (14) by a fitting comprising a pair of axially spaced, frusto-conical, surfaces (30a, 30b) formed on the exterior of the sheath at an
intermediate location between the proximal opening (24) and the distal tip (20) of the internal passage of the sheath, in which said port (32) of the sheath is located between said axially spaced, frusto-conical surfaces, and in which said coupling has an internal passage (35) connected to said port of the sheath, and seals (31a, 31b) mating with said axially spaced, frusto-conical surfaces in fluid-tight relationship.

19. An endoscopic instrument for surgery according to claim 11, in which said sheath (20) is releasably locked to said coupling (14), and rotatable, when
released, about said sheath axis.

20. An endoscopic instrument for surgery according to claim 11, in which said handle (16) has upper and lower ends, and in which said manually operable controls on the handle comprise a pair of manually depressible buttons (68, 66) located on and projecting upwardly from, the upper end of the handle for respectively opening the suction and irrigation valves (64, 62).

21. An endoscopic instrument for surgery according to claim 11, in which said handle (16) has upper and lower ends, and includes a hook (86), extending from a location adjacent the upper end of the handle, the hook comprising a first part (86a) extending laterally with respect to the direction of elongation of the handle and a second part (86b) extending, from the laterally extending first part, alongside the handle in spaced relation to the handle.

22. An endoscopic instrument for surgery comprising: an elongated, tubular sheath (12) extending along a
sheath axis, the sheath having an internal
passage for receiving a telescope, the internal passage extending from a proximal, telescope- receiving opening (24) to a distal tip (20), and a fluid port (32) at a location nearer to said
telescope-receiving opening than to said distal tip, the fluid port providing fluid
communication between the internal passage of
the sheath and the exterior of the sheath
through a wall of the sheath;
a handle (16) having a manually graspable external
surface;
a fitting (14) for connecting the handle to the
sheath at the location of said fluid port, the
fitting having a fluid passage (35) for carrying fluid into and out of the sheath through said
fluid port and a making a fluid-tight connection from the fluid passage to the fluid port; and a telescope (25, 27) extending longitudinally within said sheath from said proximal opening to a
location adjacent, but short of, the distal tip

(20) , the telescope having an outside dimension such that an annular space for fluid flow is
provided between the telescope and an inner face of the wall of the sheath.

23. An endoscopic instrument for surgery according to claim 22, in which the exterior of the sheath (12) has an oval cross-section.

24. An endoscopic instrument for surgery according to claim 22, in which the telescope (25, 37) has a lens at a distal end thereof adjacent, but short of, the distal tip of the sheath, and in which the distal tip of the sheath is curved inward to direct irrigation fluid inwardly over the lens of the telescope to wash away accumulated matter.