Laparoscopic cannula assembly and associated method
First Claim
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1. A cannula assembly for use in laparoscopic surgery, comprising:
- a rigid tubular member;
first means connected to said tubular member and rigid therewith for defining, for a first laparoscopic instrument having a rigid shaft, a first insertion path through said tubular member and through a region of predetermined area to be lodged in a patient'"'"'s abdomen;
second means connected to said tubular member and at least partially separate from said first means for defining, for a second laparoscopic instrument having a rigid shaft, a second insertion path through said region; and
angle means on said tubular member for angling said first insertion path and said second insertion path relative to one another so that said first laparoscopic instrument and said second laparoscopic instrument emerge from a distal end of the cannula assembly at an angle relative to one another.
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Abstract
A cannula assembly for use in laparoscopic surgery comprises a rigid tubular member and a first component connected to the tubular member and rigid therewith for defining, for a first laparoscopic instrument having a rigid shaft, a first insertion path through the tubular member and through a pre-established instrument-crossing region of predetermined area to be lodged in a patient'"'"'s abdomen. A second component is connected to the tubular member and is at least partially separate from the first component for defining, for a second laparoscopic instrument having a rigid shaft, a second insertion path through the instrument-crossing region.
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Citations
22 Claims
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1. A cannula assembly for use in laparoscopic surgery, comprising:
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a rigid tubular member; first means connected to said tubular member and rigid therewith for defining, for a first laparoscopic instrument having a rigid shaft, a first insertion path through said tubular member and through a region of predetermined area to be lodged in a patient'"'"'s abdomen; second means connected to said tubular member and at least partially separate from said first means for defining, for a second laparoscopic instrument having a rigid shaft, a second insertion path through said region; and angle means on said tubular member for angling said first insertion path and said second insertion path relative to one another so that said first laparoscopic instrument and said second laparoscopic instrument emerge from a distal end of the cannula assembly at an angle relative to one another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A cannula assembly for use in laparoscopic surgery, comprising:
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a rigid first tubular member having a first proximal end, a first distal end and a first central region; a rigid second tubular member having a second proximal end, a second distal end and a second central region; and connection means on said first tubular member and said second tubular member for connecting said first tubular member and said second tubular member to one another at said first proximal end and said second proximal end, said connection means including angle means for enabling a distal end of a first laparoscopic instrument inserted through said first tubular member to be disposed at an angle with respect to a distal end of a second laparoscopic instrument inserted through said second tubular member. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method for use in laparoscopy, comprising the steps of:
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forming a perforation in a patient'"'"'s abdominal wall; disposing in said perforation a cannula assembly including at least one rigid tubular member; inserting a distal end of a first laparoscopic instrument through said cannula assembly and into the patient'"'"'s abdominal cavity; inserting a distal end of a second laparoscopic instrument through said cannula assembly and into the patient'"'"'s abdominal cavity so that the distal ends of said first laparoscopic instrument and said second laparoscopic instrument extend at an acute angle relative to one another inside the patient'"'"'s abdominal cavity; manipulating said second laparoscopic instrument from outside the patient to perform a surgical operation inside the patient; and withdrawing said second laparoscopic instrument from the patient'"'"'s abdominal cavity and from said cannula assembly. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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Specification