Adjustable angle medical forceps

• US 5,209,747 A
• Filed: 06/05/1992
• Issued: 05/11/1993
• Est. Priority Date: 12/13/1990
• Status: Expired due to Fees

• Current Assignee: Nusurg Medical, Inc.
• Original Assignee: Dennis J. Knoepfler
• Inventors: Knoepfler, Dennis J.
• Primary Examiner(s): Thaler, Michael H.
• Application Number:
  US07/895,188
• Time in Patent Office: 340 Days
• Field of Search: 606/205-208, 606/13, 606/16, 606/46, 606/51, 606/52, 128/751, 604/22, 81/177.8, 81/177.7, 81/177.75, 81/385, 81/386, 81/427.5
• US Class Current: 606/16
• CPC Class Codes: A61B 17/29 Forceps for use in minimally invasive surgery
• CPC Class Codes: A61B 18/14 Probes or electrodes therefor
• CPC Class Codes: A61B 18/24 with a catheter A61B18/26, A61B18/28 take precedence
• CPC Class Codes: A61B 2017/2837 with a locking ratchet
• CPC Class Codes: A61B 2017/2927 the angular position of the head being adjustable with respect to the shaft
• CPC Class Codes: A61B 2017/2943 Toothed members, e.g. rack and pinion
• CPC Class Codes: A61B 2018/2238 with means for selectively laterally deflecting the tip of the fibre
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61B 2217/007 with irrigation system

Abstract

An adjustable angle medical forceps is disclosed which has a rotatable arm to which is attached a jaw element and which provides increased surgical dexterity for suturing with curved or straight needles, for dissecting bodily organs, and for isolating nerves, arteries, and the like. The forceps includes a laser fiber and irrigation and suction catheters for lasing, irrigating, and suctioning.

Claims

1. An adjustable angle medical forceps adapted for a laparoscopic procedure comprising:

a first tubular housing,

a second tubular housing,

a movable jaw pair,

a handle,

angle adjustment means, and

jaw actuation means;

said handle attached to a first end of said first tubular housing, said handle being operable to open and close said jaw pair via said jaw actuation mans, said first tubular housing having a second end to which is pivotally connected a first end of said second tubular housing, said angle adjustment means being operable to pivot said second tubular housing with respect to said first tubular housing, said second tubular housing having a second end to which is attached said jaw pair, the portion of said jaw actuation means and angle adjustment means near a distal end of said instrument being disposed substantially within said second tubular housing so that neither of said jaw actuation and angle adjustment means is exposed to surrounding tissue, said forceps thereby being adapted to bluntly dissect with said distal end thereof,

whereby said forceps, initially configured generally straight, may be inserted through a cannula, placing said second tubular housing and moveable jaw pair within a patient'"'"'s abdomen, and after insertion thereof said angle adjustment means may be manipulated externally of the cannula and the patient'"'"'s abdomen, to articulate said second tubular housing and jaw pair into a desired angular configuration within the patient'"'"'s abdomen, said jaw actuation means then being operable to actuate said jaw pair for grasping, suturing and dissecting, said second tubular housing spacing said jaw pair from said first tubular housing and providing, when angled with respect to said first tubular housing, increased leverage, maneuverability and dexterity for suturing, dissecting and the like.

2. The adjustable angle medical forceps of claim 1 wherein said movable jaw pair includes a pair of jaw elements, each jaw element of said pair being pivotally supported on a shaft and having integral therewith a pinion gear pivotally supported on said shaft.

3. The adjustable angle medical forceps of claim 2 wherein said jaw actuation means includes a flexible cable having a first end connected to said handle via spring tensioning means, said flexible cable extending through said first and second tubular housings and having a second end to which is attached a rack gear cooperable with said pinion gears of said jaw elements, wherein when said handle is squeezed said spring tensioning means retracts said flexible cable into said first and second tubular housings thereby translating said rack gear with respect to said pinion gears and closing said pair.

4. The adjustable angle medical forceps of claim 1 further including:

laser means,

irrigation means,

suction means, and

cauterization means.

5. The adjustable angle medical forceps of claim 4 wherein said laser means comprises a laser fiber threaded through said first tubular housing, and said irrigation and suction means comprises irrigation and suction catheters threaded through said first tubular housing, each said laser fiber, irrigation catheter, and suction catheter having an exit port near said second end of said first tubular housing.

6. The adjustable angle medical forceps of claim 4 wherein said laser means comprises a laser fiber threaded through said first and second tubular housings, and said irrigation and suction means comprises irrigation and suction catheters threaded through said first and second tubular housings, each said laser fiber, irrigation catheter, and suction catheter having an exit port at a side of said second tubular housing near said second end.

7. The adjustable angle medical forceps of claim 1 wherein said movable jaw pair includes a pair of jaw elements, said pair of jaw elements being pivotally supported on a common shaft, said jaw elements having integral therewith a scissors mechanism means.

8. The adjustable angle medical forceps of claim 7 wherein said jaw actuation means includes a flexible cable having a first end connected to said handle via spring tensioning means, said flexible cable extending through said first and second tubular housings and having a second end attached to said scissors mechanism means, wherein when said handle is squeezed said spring tensioning means retracts said flexible cable into said first and second tubular housings, thereby actuating said scissors mechanism means and closing said jaw pair.

9. The adjustable angle medical forceps of claim 1 wherein said angle adjustment means extends through said first tubular housing.

10. An adjustable angle medical forceps comprising:

a first tubular housing;

a second tubular housing,

a movable jaw element,

a handle,

angle adjustment means, and

jaw actuation means;

said handle attached to a first end of said first tubular housing, said handle operable to open and close said jaw element via said jaw actuation means, said first tubular housing having a second end to which is pivotally connected a first end of said second tubular housing, said angle adjustment means operable so as to pivot said second tubular housing with respect to said first tubular housing, said second tubular housing having a second end to which is attached said jaw element;

said movable jaw element including a pair of jaws, each jaw of said pair being pivotally supported on a shaft and having integral therewith a pinion gear pivotally supported on said shaft;

said jaw actuation means including a flexible cable having a first end connected to said handle via spring tensioning means, said flexible cable extending through said first and second tubular housings and having a second end to which is attached a rack gear cooperable with said pinion gears of said jaws, wherein when said handle is squeezed said spring tensioning means retracts said flexible cable into said first and second tubular housings thereby translating said rack gear with respect to said pinion gears and closing said jaws;

said angle adjustment means including a rotary shaft contained within said first tubular housing, said rotary shaft having a first end to which is attached a rotary knob and a second end to which is attached a first bevel gear, said first bevel gear cooperable with a second bevel gear, said second bevel gear having an axle of rotation oriented at a right angle with respect to an axis of rotation of said first bevel gear and being fixedly attached within and to said first end of said second tubular housing, said axis of rotation of said second bevel gear being at a right angle to a centerline axis of said second tubular housing, wherein when said rotary knob is twisted said first bevel gear drives said second bevel gear causing said second tubular housing to pivot with respect to said first tubular housing.

11. An adjustable angle medical forceps comprising:

a first tubular housing,

a second tubular housing,

a movable jaw element,

a handle,

angle adjustment means, and

jaw actuation means;

said handle attached to a first end of said first tubular housing, said handle operable to open and close said jaw element via said jaw actuation means, said first tubular housing having a second end to which is pivotally connected a first end of said second tubular housing, said angle adjustment means operable so as to pivot said second tubular housing with respect to said first tubular housing, said second tubular housing having a second end to which is attached said jaw element;

said movable jaw element including a pair of jaws, each jaw of said pair being pivotally supported on a shaft and having integral therewith a pinion gear pivotally supported on said shaft;

said jaw actuation means including a flexible cable having a first end connected to said handle via spring tensioning means, said flexible cable extending through said first and second tubular housings and having a second end to which is attached a rack gear cooperable with said pinion gears of said jaws, wherein when said handle is squeezed said spring tensioning means retracts said flexible cable into said first and second tubular housings thereby translating said rack gear with respect to said pinion gears and closing said jaws;

said angle adjustment means including a push rod contained within said first tubular housing, said push rod having a first end with gripping means grippable by a user and a second end operable as a latch and cooperable with a spring loaded ratchet, said ratchet being fixedly attached within and to said first end of said second tubular housing, wherein when said first end of said push rod is pulled said ratchet advances past said latch causing said second tubular housing to pivot with respect to said first tubular housing.

12. An adjustable angle medical forceps comprising:

a first tubular housing,

a second tubular housing,

a movable jaw element,

a handle,

angle adjustment means, and

jaw actuation means;

said handle attached to a first end of said first tubular housing, said handle operable to open and close said jaw element via said jaw actuation means, said first tubular housing having a second end to which is pivotally connected a first end of said second tubular housing, said angle adjustment means operable so as to pivot said second tubular housing with respect to said first tubular housing, said second tubular housing having a second end to which is attached said jaw element;

said movable jaw element including a pair of jaws, said pair of jaws being pivotally supported on a common shaft, said jaws having integral therewith a scissors mechanism means;

said jaw actuation means including a flexible cable having a first end connected to said handle via spring tensioning means, said flexible cable extending through said first and second tubular housings and having a second end attached to said scissors mechanism means, wherein when said handle is squeezed said spring tensioning means retracts said flexible cable into said first and second tubular housings, thereby actuating said scissors mechanism means and closing said jaws;

said angle adjustment means including a rotary shaft contained within said first tubular housing, said rotary shaft having a first end to which is attached a rotary knob and a second end to which is attached a first bevel gear, said first bevel gear cooperable with a second bevel gear, said second bevel gear having an axis of rotation oriented at a right angle with respect to an axis of rotation of said first bevel gear and being fixedly attached within and to said first end of said second tubular housing, said axis of rotation of said second bevel gear being at a right angle to a centerline axis of said second tubular housing, wherein when said rotary knob is twisted said first bevel gear drives said second bevel gear causing said second tubular housing to pivot with respect to said first tubular housing.

13. An adjustable angle medical forceps comprising:

a first tubular housing,

a second tubular housing,

a movable jaw element,

a handle,

angle adjustment means, and

jaw actuation means;

said handle attached to a first end of said first tubular housing, said handle operable to open and close said jaw element via said jaw actuation means, said first tubular housing having a second end to which is pivotally connected a first end of said second tubular housing, said angle adjustment means operable so as to pivot said second tubular housing with respect to said first tubular housing, said second tubular housing having a second end to which is attached said jaw element;

said movable jaw element including a pair of jaws, said pair of jaws being pivotally supported on a common shaft, said jaws having integral therewith a scissors mechanism means;

said jaw actuation means including a flexible cable having a first end connected to said handle via spring tensioning means, said flexible cable extending through said first and second tubular housings and having a second end attached to said scissors mechanism means, wherein when said handle is squeezed said spring tensioning means retracts said flexible cable into said first and second tubular housings, thereby actuating said scissors mechanism means and closing said jaws;

said angle adjustment means including a push rod contained within said first tubular housing, said push rod having a first end with gripping means grippable by a user and a second end operable as a latch and cooperable with a spring loaded ratchet, said ratchet being fixedly attached within and to said first end of said second tubular housing, wherein when said first end of said push rod is pulled said ratchet advances past said latch causing said second tubular housing to pivot with respect to said first tubular housing.

14. An adjustable angle scopic device comprising:

a first tubular housing,

a second tubular housing,

a movable jaw pair,

a handle,

angle adjustment means, and

jaw actuation means;

said handle attached to a first end of said first tubular housing, said handle being operable to open and close said jaw pair via said jaw actuation means, said first tubular housing having a second end to which is pivotally connected a first end of said second tubular housing, said angle adjustment means being operable to pivot said second tubular housing with respect to said first tubular housing, said second tubular housing having a second end to which is attached said jaw pair, the portion of said jaw actuation means and angle adjustment means near a distal end of said instrument being disposed substantially within said second tubular housing so that neither of said jaw actuation and angle adjustment means is exposed to surrounding tissue, said forceps thereby being adapted to bluntly dissect with said distal end thereof,

whereby said forceps, initially configured generally straight, may be inserted through a cannula, placing said second tubular housing and moveable jaw pair within a patient'"'"'s abdomen, and after insertion thereof said angle adjustment means may be manipulated externally of the cannula and the patient'"'"'s abdomen, to articulate said second tubular housing and jaw pair into a desired angular configuration within the patient'"'"'s abdomen, said jaw actuation means then being operable to actuate said jaw pair for grasping, suturing and dissecting, said second tubular housing spacing said jaw pair from said first tubular housing and providing, when angled with respect to said first tubular housing, increased leverage, maneuverability and dexterity for suturing, dissecting and the like.

15. An adjustable angle medical forceps adapted for a laparoscopic procedure comprising:

a first slender, elongated member,

a second slender, elongated member,

a movable jaw pair,

a handle,

angle adjustment means, and

jaw actuation means;

said handle attached to a first end of said first member, said handle being operable to open and close said jaw pair via said jaw actuation means, said first member having a second end with means for pivoting relative thereto said second member, said angle adjustment means being operable to pivot said second member with respect to said first member, said second member having a distal end to which is attached said jaw pair, the portion of said jaw actuation means near a distal end of said instrument being disposed substantially within said second member, said forceps thereby being adapted to bluntly dissect with said distal end thereof,

whereby said forceps, initially configured generally straight, may be inserted through a cannula, placing said second member and moveable jaw pair within a patient'"'"'s abdomen, and after insertion thereof said angle adjustment means may be manipulated to articulate said second member and jaw pair into a desired angular configuration within the patient'"'"'s abdomen, said jaw actuation means then being operable to actuate said jaw pair for grasping, suturing and dissecting, said second member spacing said jaw pair from said first member and providing, when angled with respect to said first member, increased leverage, maneuverability and dexterity for suturing, dissecting and the like.