Anastomotic connector and graft expander for mounting a graft
First Claim
Patent Images
1. A method of mounting a graft on a spiked connector, in which the tips of the spikes define a periphery, comprising:
- placing the graft, in said periphery, between tips of said spikes and a piercable element;
impaling said piercable element on said spikes, such that the graft is also impaled on said spikes; and
removing said piercable element from said spikes.
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Abstract
An anastomotic connector device (102) for mounting a graft (100) in which the connector has spikes (106) defining a periphery around the base ring (104). Also a graft expander (900) having a body (906), a lower diameter tube portion (908) connected by truncated cone (910) and a finger rest (902) and plunger (904).
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Citations
66 Claims
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1. A method of mounting a graft on a spiked connector, in which the tips of the spikes define a periphery, comprising:
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placing the graft, in said periphery, between tips of said spikes and a piercable element;
impaling said piercable element on said spikes, such that the graft is also impaled on said spikes; and
removing said piercable element from said spikes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of mounting a graft on a spiked connector, comprising:
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placing the graft between tips of said spikes and an element having a general outer perimeter;
advancing said spikes relative to said element such that said spikes penetrate said graft and penetrate said perimeter; and
removing said element. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method of mounting a graft on a connector having a plurality of spikes arranged around a central opening, said spikes having radially outward pointing hooks, comprising:
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folding said spikes such that said hooks point inward into said central opening and define a periphery between them;
inserting a graft into said periphery;
advancing said hooks relative to said graft, to penetrate said graft; and
repositioning said hooks to point outward. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A method of mounting a graft on a connector having a plurality of spikes arranged around a central opening, said spikes having radially outward pointing hooks, comprising:
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inserting a graft into a periphery defined by forward ends of said spikes, in a first direction;
folding back a tip of said graft to cover said hooks; and
pulling back said graft, in a direction opposite said first direction, such that said hooks engage said folded part of said graft. - View Dependent Claims (25, 26, 27)
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28. A method of forming spike tips of an anastomotic connector, into hooks for engaging blood vessels, comprising:
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providing an anastomosis connector having a plurality of straight spikes having tips;
first bending said tips at a first angle, using a first mandrel; and
second bending a furtherly distal portion of said tips using a second mandrel, to form a hook shape of said tips. - View Dependent Claims (29, 30)
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31. An anastomotic connector, comprising:
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a base ring; and
a plurality of hooked spikes that pass through said base ring, which spikes include a weakening adjacent said hooks, wherein a position of said weakening on said spikes is located on said spike so that the spikes can be torn off at said weakening by retracting said spikes relative to said hooks. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38)
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39. An anastomotic connector, comprising:
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a base ring; and
a plurality of target spikes, adapted to engage a target vessel, which target spikes pass through said ring; and
a plurality of retractable pulling spikes, having tips adapted to engage a graft placed in the lumen of said ring, and being adapted to at least partially evert a lip of said graft when said pulling spikes are retracted. - View Dependent Claims (40, 41, 42, 43, 44, 45)
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46. A method of performing an anastomosis, comprising:
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engaging at least one of the vessels of a two vessel anastomosis, using a plurality of retractable spikes;
retracting said plurality of retractable spikes, to cause at least a partial eversion of said vessel. - View Dependent Claims (47, 48)
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49. A method of partially everting a graft on a connector, comprising:
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inserting a graft into a ring shaped anastomosis connector having a plurality of spikes; and
pulling an end of said graft radially out, so that said end abuts said spikes adjacent the spikes and extends radially out of said spikes between said spikes. - View Dependent Claims (50)
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51. A method of twisting hook-tipped spikes in a ring-type anastomotic connector so that the hooks point inward rather than outward, comprising:
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arranging said spikes between two rings; and
rotating one of said rings relative to the other of said rings such that said spikes are twisted at least 120°
. - View Dependent Claims (52, 53)
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54. A method of selecting an anastomotic connector for a graft, comprising:
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test everting a graft on a hollow, tubular gauge having a gauge diameter; and
if said everting succeeds, selecting a connector having a size that matches said gauge diameter. - View Dependent Claims (55, 56, 57, 58)
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59. A medical graft expander, comprising:
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a body having a first diameter;
a tube having a second diameter smaller than said first diameter, mounted at an end of said body, and defining an inner chamber; and
a shaft, positioned in said body and axially advancable into said chamber, said shaft having at least one section with a diameter greater than a diameter of said chamber, such that when said section is advanced into said chamber, said tube is radially expanded. - View Dependent Claims (60, 61, 62, 63)
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64. A graft everting method, comprising:
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mounting at least an end of said graft on an expandable tube;
expanding said tube to engage and expand said graft, and rolling back at least a portion of said end over itself. - View Dependent Claims (65, 66)
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Specification