Formation of knots
First Claim
1. A laparoscopic needle delivery device, comprising a generally elongate member, the member having a needle carrying portion for releasably carrying a needle and a loop carrying portion for releasably carrying at least one loop of filamentary material, said loop carrying portion being constructed and arranged to enable said at least one loop to be released from the elongate member whilst still formed as a loop.
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Accused Products
Abstract
The present invention is concerned with the formation of knots in filamentary material. The invention has particular application to the formation of knots in suturing and in ligating tubular structures, such as blood vessels. Devices are provided which carry at least one loop (22, 220, 230, 101, 116, 122) of filamentary material, such as suture material. The loop or loops can be used in the formation of sutures.
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Citations
67 Claims
- 1. A laparoscopic needle delivery device, comprising a generally elongate member, the member having a needle carrying portion for releasably carrying a needle and a loop carrying portion for releasably carrying at least one loop of filamentary material, said loop carrying portion being constructed and arranged to enable said at least one loop to be released from the elongate member whilst still formed as a loop.
- 18. A laparoscopic device for use in ligating a tubular structure, the device comprising an elongate member having a generally hook-shaped distal portion to enable the tubular structure that is to be ligated to be received in said portion, said elongate member further comprising a loop carrying portion for releasably carrying at least one loop of filamentary material, said loop carrying portion being constructed and arranged to enable said at least one loop of material to be released from the elongate member whilst still formed as a loop.
- 34. A laparoscopic needle delivery device, comprising a generally elongate member, the member being provided with a loop carrying portion for releasably carrying at least one loop of filamentary material and a needle carrying portion for releasably carrying a needle in both a longitudinal orientation, in which the needle is generally aligned with the longitudinal axis of the elongate member, and a transverse orientation, in which the needle is generally perpendicular to said longitudinal axis.
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52. A method of ligating a tubular structure, the method comprising:
- providing a length, of filamentary material having at least one loop formed therein spaced proximally from the filamentary material'"'"'s distal end;
positioning said at least one loop adjacent the tubular structure to be ligated;
passing the distal end of the filamentary material around the tubular structure and then through the centre of said at least one loop; and
tensioning said at least one loop to ligate the tubular structure and to-form a knot in the filamentary material. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59, 60, 61, 66, 67)
- providing a length, of filamentary material having at least one loop formed therein spaced proximally from the filamentary material'"'"'s distal end;
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62. A method of forming an additional knot to secure a prior knot formed in a continuous length of filamentary material, a proximal portion of the filamentary material extending between a generally elongate first instrument and the prior knot and a distal portion of said filamentary material extending between the prior knot and the distal end of the filamentary material, the method comprising:
- a) manipulating the first instrument and a second generally elongate instrument to form a loop in the proximal portion of the filamentary material, with said second generally elongate instrument extending through said loop;
b) gripping the distal portion of the filamentary material using said second instrument;
c) withdrawing the second instrument through said loop to draw the distal portion of the filamentary material through said loop; and
d) tensioning said loop to form said additional knot on top of said prior knot. - View Dependent Claims (63, 64, 65)
- a) manipulating the first instrument and a second generally elongate instrument to form a loop in the proximal portion of the filamentary material, with said second generally elongate instrument extending through said loop;
Specification