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1. US20020082475 - Endoscopic suction-irrigation instrument for surgery

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[ EN ]

What is claimed is:

1. An endoscopic instrument for surgery comprising:
a sheath extending along a sheath axis and having an internal fluid passage;
a manually graspable handle which is elongated along a handle axis and, when the handle axis is vertical, said handle having upper and lower ends, a pair or wide faces on opposite sides of the handle, and a pair of narrow arcuate faces opposite each other, the handle having an oval-shaped cross-section whereby a width of each of said wide faces is substantially greater than a width of each of said narrow faces; and
a coupling located adjacent the lower end of the handle, the coupling extending perpendicular to one of said narrow faces, rigidly connecting the handle to the sheath at an intermediate location along the length of the sheath, and holding the sheath with said sheath axis in oblique relationship to the handle axis and in a plane to which said wide faces extend transversely and to which the handle axis is parallel.
 
2. An endoscopic instrument for surgery according to claim 1, having a projection 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.
 
3. An endoscopic instrument for surgery according to claim 2, in which said projection extends laterally from a location adjacent the upper end of the handle in a direction parallel to said plane in which the sheath axis is held.
 
4. An endoscopic instrument for surgery according to claim 1, in which the angle between the handle axis and the sheath axis is adjustable.
 
5. An endoscopic instrument for surgery according to claim 4, in which said sheath is rotatable about the sheath axis.
 
6. An endoscopic instrument for surgery according to claim 4, in which said sheath is releasably locked to said coupling, and rotatable, when released, about the sheath axis.
 
7. An endoscopic instrument for surgery according to claim 1, having a suction valve within the handle, said suction valve being connectible to a suction line and openable to provide fluid communication between said suction line and said internal fluid passage of the sheath, an irrigation valve within the handle, the irrigation valve being connectible to an irrigation line, and openable to provide fluid communication between said irrigation line and said internal fluid passage of the sheath, and manually operable controls, projecting in the direction of the handle axis, from the upper end of the handle, for selectably opening the suction and irrigation valves.
 
8. An endoscopic instrument for surgery, comprising:
a sheath having an internal fluid passage;
a manually graspable handle which is elongated along a handle axis and having upper and lower ends when the handle axis is vertical;
a coupling 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 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,
said instrument including a hook, the hook comprising, as a first part thereof, said laterally extending projection, and a second part extending, from the laterally extending projection, alongside the handle in spaced relation to the handle.
 
9. An endoscopic instrument for surgery, comprising:
a sheath having an internal fluid passage;
a manually graspable handle which is elongated along a handle axis and having upper and lower ends when the handle axis is vertical;
a coupling 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 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;
in which the angle between the handle axis and the sheath is adjustable.
 
10. An endoscopic instrument for surgery, comprising:
a sheath having an internal fluid passage;
a manually graspable handle which is elongated along a handle axis and having upper and lower ends when the handle axis is vertical;
a coupling 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 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;
in which the angle between the handle axis and the sheath is approximately 30 degrees.
 
11. An endoscopic instrument for surgery, comprising:
a sheath having an internal fluid passage;
a manually graspable handle which is elongated along a handle axis and having upper and lower ends when the handle axis is vertical;
a coupling 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 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;
in which said sheath is removably connected to said coupling by a fluid-tight fitting, and in which said coupling has an internal passage connected to said sheath through said fluid-tight fitting.
 
12. An endoscopic instrument for surgery, comprising:
a sheath having an internal fluid passage;
a manually graspable handle which is elongated along a handle axis and having upper and lower ends when the handle axis is vertical;
a coupling 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 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;
in which said sheath is removably connected to said coupling by a fitting comprising a pair of axially spaced, frusto-conical, surfaces formed on the exterior of the sheath, and in which said coupling has an internal passage connected to said sheath, and seals mating with said axially spaced, frusto-conical surfaces of the sheath in fluid-tight relationship.
 
13. An endoscopic instrument for surgery, comprising:
a sheath having an internal fluid passage;
a manually graspable handle which is elongated along a handle axis and having upper and lower ends when the handle axis is vertical; and
a coupling 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;
in which the handle is provided, adjacent its lower end, with two fittings respectively on opposite sides of the handle, and in which the coupling is removably connectible to either of said two fittings.
 
14. An endoscopic instrument for surgery comprising:
a tubular sheath 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 to a distal tip, and a port for connection to suction and irrigation lines;
a handle having a manually graspable external surface and upper and lower ends;
a suction valve within the handle, the suction valve being connectible to a suction line and openable to provide fluid communication between said port and the suction line;
an irrigation valve within the handle, the irrigation valve being connectible to an irrigation line and openable to provide fluid communication between said port and the irrigation line;
manually operable controls for selectably opening the suction and irrigation valves, comprising: a pair of manually depressible buttons located on and projecting upward from the upper end of the handle; and
a coupling 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;
wherein the handle is elongated along a handle axis which is oblique relative to the sheath axis, the handle axis forms an acute angle relative to the portion of the sheath axis between the proximal opening of the sheath passage and said intermediate location, and said manually operable controls project in the direction of the handle axis, from the upper end of the handle.
 
15. An endoscopic instrument for surgery, comprising:
a tubular sheath 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 to a distal tip, and a port for connection to suction and irrigation lines;
a handle having a manually graspable external surface;
a suction valve within the handle, the suction valve being connectible to a suction line and openable to provide fluid communication between said port and the suction line;
an irrigation valve within the handle, the irrigation valve being connectible to an irrigation line and openable to provide fluid communication between said port and the irrigation line;
manually operable controls on the handle for selectably opening the suction and irrigation valves; and
a coupling 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;
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;
said instrument including a suction fitting on the suction valve, a suction line connected to the suction fitting, an irrigation fitting on the irrigation valve, and an irrigation line connected to the irrigation valve, the suction and irrigation fittings extending in a direction transverse to a plane in which the sheath axis lies, and to which the handle axis is parallel.
 
16. An endoscopic instrument for surgery, comprising:
a tubular sheath 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 to a distal tip, and a port for connection to suction and irrigation lines;
a handle having a manually graspable external surface;
a suction valve within the handle, the suction valve being connectible to a suction line and openable to provide fluid communication between said port and the suction line;
an irrigation valve within the handle, the irrigation valve being connectible to an irrigation line and openable to provide fluid communication between said port and the irrigation line;
manually operable controls on the handle for selectably opening the suction and irrigation valves; and
a coupling 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;
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; and
in which the angle between the handle axis and the sheath is adjustable.
 
17. An endoscopic instrument for surgery according to claim 16, in which the angle between the handle axis and the sheath is selectable from a limited number of discrete angles.
 
18. An endoscopic instrument for surgery, comprising:
a tubular sheath 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 to a distal tip, and a port for connection to suction and irrigation lines;
a handle having a manually graspable external surface;
a suction valve within the handle, the suction valve being connectible to a suction line and openable to provide fluid communication between said port and the suction line;
an irrigation valve within the handle, the irrigation valve being connectible to an irrigation line and openable to provide fluid communication between said port and the irrigation line;
manually operable controls on the handle for selectably opening the suction and irrigation valves; and
a coupling 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;
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; and
in which the angle between the handle axis and the sheath axis is approximately 30 degrees.
 
19. An endoscopic instrument for surgery, comprising:
a tubular sheath 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 to a distal tip, and a port for connection to suction and irrigation lines;
a handle having a manually graspable external surface;
a suction valve within the handle, the suction valve being connectible to a suction line and openable to provide fluid communication between said port and the suction line;
an irrigation valve within the handle, the irrigation valve being connectible to an irrigation line and openable to provide fluid communication between said port and the irrigation line;
manually operable controls on the handle for selectably opening the suction and irrigation valves; and
a coupling 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;
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; and
in which said sheath is removably connected to said coupling by a fluid-tight fitting, in which said port of the sheath is located at an intermediate location between the proximal opening and the distal tip of the internal passage of the sheath, and in which said coupling has an internal passage connected to said port of the sheath through said fluid-tight fitting.
 
20. An endoscopic instrument for surgery, comprising:
a tubular sheath 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 to a distal tip, and a port for connection to suction and irrigation lines;
a handle having a manually graspable external surface;
a suction valve within the handle, the suction valve being connectible to a suction line and openable to provide fluid communication between said port and the suction line;
an irrigation valve within the handle, the irrigation valve being connectible to an irrigation line and openable to provide fluid communication between said port and the irrigation line;
manually operable controls on the handle for selectably opening the suction and irrigation valves; and
a coupling 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;
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; and
in which said sheath is removably connected to said coupling by a fitting comprising a pair of axially spaced, frusto-conical, surfaces formed on the exterior of the sheath at an intermediate location between the proximal opening and the distal tip of the internal passage of the sheath, in which said port of the sheath is located between said axially spaced, frusto-conical surfaces, and in which said coupling has an internal passage connected to said port of the sheath, and seals mating with said axially spaced, frusto-conical surfaces in fluid-tight relationship.
 
21. An endoscopic instrument for surgery, comprising:
a tubular sheath 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 to a distal tip, and a port for connection to suction and irrigation lines;
a handle having a manually graspable external surface;
a suction valve within the handle, the suction valve being connectible to a suction line and openable to provide fluid communication between said port and the suction line;
an irrigation valve within the handle, the irrigation valve being connectible to an irrigation line and openable to provide fluid communication between said port and the irrigation line;
manually operable controls on the handle for selectably opening the suction and irrigation valves; and
a coupling 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;
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; and
in which said sheath is releasably locked to said coupling, and rotatable, when released, when said sheath axis.
 
22. An endoscopic instrument for surgery, comprising:
a tubular sheath 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 to a distal tip, and a port for connection to suction and irrigation lines;
a handle having a manually graspable external surface;
a suction valve within the handle, the suction valve being connectible to a suction line and openable to provide fluid communication between said port and the suction line;
an irrigation valve within the handle, the irrigation valve being connectible to an irrigation line and openable to provide fluid communication between said port and the irrigation line;
manually operable controls on the handle for selectably opening the suction and irrigation valves; and
a coupling 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;
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; and
in which said handle has upper and lower ends, and includes a hook, extending from a location adjacent the upper end of the handle, the hook comprising a first part extending laterally with respect to the direction of elongation of the handle and a second part extending, from the laterally extending first part, alongside the handle in spaced relation to the handle.
 
23. An endoscopic instrument for surgery, comprising:
an elongated, tubular sheath 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 to a distal tip, and a fluid port 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 having a manually graspable external surface;
a fitting for connecting the handle to the sheath at the location of said fluid port, the fitting having a fluid passage 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 extending longitudinally within said sheath from said proximal opening to a location adjacent, but short of, the distal tip, 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;
in which the exterior of the sheath has an oval cross-section.
 
24. An endoscopic instrument for surgery, comprising:
an elongated, tubular sheath 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 to a distal tip, and a fluid port 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 having a manually graspable external surface;
a fitting for connecting the handle to the sheath at the location of said fluid port, the fitting having a fluid passage 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 extending longitudinally within said sheath from said proximal opening to a location adjacent, but short of, the distal tip, 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;
in which the telescope 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.