Multiple ligating band dispenser for ligating instruments
First Claim
1. In a ligating instrument for dispensing a plurality of ligature means during a succession of operations wherein said ligating instrument includes elongated tubular introducer means extending between proximal and distal positions for attachment to ligature dispensing means and operating means at said distal and proximal positions, respectively, the improvement wherein said dispensing means comprises first and second coaxially located, interfitted segment means for supporting the plurality of ligature means at a plurality of axially spaced positions thereon, each of said segment means including spaced ligature engagement means for engaging portions of each of the ligature means and one of said segment means being connected to said operating means for being moved between first and second positions relative to the other of said segment means thereby to dispense one of said ligature means from the distal end of said ligating instrument and to move each of the remaining ligature means distally and incrementally with respect to said dispensing means.
4 Assignments
0 Petitions
Accused Products
Abstract
A ligating band dispenser for dispensing a plurality of ligating bands individually during a sequence of operations for a ligating instrument. Interfitted housing and piston segments support a plurality of ligating bands at axially spaced locations. Retraction of the piston segment dispenses on ligating band and shifts the remaining ligating bands distally and axially. After retraction, the piston is biased forward so a next retraction dispenses another ligating band.
-
Citations
29 Claims
- 1. In a ligating instrument for dispensing a plurality of ligature means during a succession of operations wherein said ligating instrument includes elongated tubular introducer means extending between proximal and distal positions for attachment to ligature dispensing means and operating means at said distal and proximal positions, respectively, the improvement wherein said dispensing means comprises first and second coaxially located, interfitted segment means for supporting the plurality of ligature means at a plurality of axially spaced positions thereon, each of said segment means including spaced ligature engagement means for engaging portions of each of the ligature means and one of said segment means being connected to said operating means for being moved between first and second positions relative to the other of said segment means thereby to dispense one of said ligature means from the distal end of said ligating instrument and to move each of the remaining ligature means distally and incrementally with respect to said dispensing means.
-
16. A ligating instrument for positioning a plurality of ligating bands at a plurality of lesions comprising:
-
A. ligating instrument introducer means for communicating between proximal and distal ends of said ligating instrument, B. operating means at the proximal end of said ligating instrument connected to said ligating instrument introducer means for controlling the dispensing of ligating bands, and C. dispensing means at the distal end of said ligating instrument introducer means for dispensing the ligating bands in sequence at discrete locations, said dispensing means including an interfitted tubular dispenser housing means and piston means for collectively supporting a plurality of axially spaced ligating bands thereon, each of said dispenser housing means and piston means having spaced ligating band engagement means for engaging portions of each of the ligating bands, said piston means being connected to said operating means for movement between proximal and distal positions wherein movement of said piston means proximally with respect to said dispenser housing means dispenses one of the ligating bands from the distal end of said ligating instrument and subsequent movement of said piston means distally transfers each of the remaining ligating bands distally with respect to said dispensing means. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
-
-
29. A method for dispensing a plurality of ligating bands at a plurality of discrete locations including the steps of:
-
A. providing a ligating instrument having a hollow dispenser at the distal end thereof that carries the plurality of ligating bands at axially displaced positions thereon and that includes an interfitted housing and piston movable with respect to the housing, each of the housing and piston having engagement means for dispensing one ligating band from the distal end of the ligating instrument, B. inserting the ligating instrument into a patient'"'"'s body, and C. ligating tissue at a plurality of locations within the patient'"'"'s body by, for each location, i. locating the distal end of the ligating instrument proximate tissue to be ligated, ii. drawing the tissue to be ligated into the hollow dispenser thereby to position the distal end of the ligating instrument at the position for applying the ligating band, iii. retracting the piston relative to the housing thereby to dispense one of the plurality of ligating bands and ligate the tissue, and iv. moving the piston distally thereby to advance the piston whereby the engagement means move remaining ligating bands on the dispenser distally and axially, and D. withdrawing the ligating instrument from the patient after the plurality of ligating bands have been dispensed.
-
Specification