Source: http://www.google.com/patents/US7753919?dq=3657699
Timestamp: 2018-01-23 18:43:06
Document Index: 143579904

Matched Legal Cases: ['§119', 'Application No. 2004', 'art 3', 'art) 4', 'arts 54', 'art 53', 'art 43', 'art 3']

Patent US7753919 - Wire for removing intravascular foreign body and medical instrument - Google Patents
A wire for removing an intravascular foreign body comprises a flexible wire body, a branch part branching out from the forward end of the wire body, and a plurality of filaments extending across the branch part. The branch part and the filaments form a space for capturing a foreign body therein. At least...http://www.google.com/patents/US7753919?utm_source=gb-gplus-sharePatent US7753919 - Wire for removing intravascular foreign body and medical instrument
Publication number US7753919 B2
Application number US 11/219,876
Also published as DE602005017229D1, EP1632188A1, EP1632188B1, US20060052797
Publication number 11219876, 219876, US 7753919 B2, US 7753919B2, US-B2-7753919, US7753919 B2, US7753919B2
Inventors Takeshi Kanamaru
US 7753919 B2
This application is based on and claims priority under 35 U.S.C. §119 with respect to Japanese Application No. 2004-260098 filed on Sep. 7, 2004, the entire content of which is incorporated herein by reference.
As shown in FIG. 1, the capturing part 3 comprises two branch wires (branch part) 4 a, 4 b and three filaments 5 a, 5 b, 5 c. The two branch wires branch from the forward end of the coil 266 (or the forward end of the wire body 2) and extend apart from one another (i.e., diverge in a direction away from the wire body 2). The three filaments extend from the one branch wire 4 a to the other branch wire 4 b.
The branch wires 4 a, 4 b are constructed as hollow wires. The hollow wires can include not only pipe-like or tubular wires, but also coils and braided wires with a hollow interior. The illustrated example is constructed as follows. The coil 266 is composed of at least four fine wires. These four wires are separated into two wires at the forward end of the coil 266, and these two wires are twisted to make the hollow twisted wires forming the branch wires 4 a, 4 b. It is also possible to form the branch wires 4 a, 4 b by fixing a branched pipe-like member to the forward end of the coil 266.
The connecting parts 54 permit the space forming part 53 to be introduced relatively easily into the hollow part 43 of the branch wires 4 a and 4 b.
As shown in FIG. 4, the filament 5 a constructed as mentioned above is positioned approximately on the plane (perpendicular to the paper in FIG. 4) passing through the extension line of the central axis of the wire body 2. In other words, the filament 5 a overlaps approximately with the extension line of the central axis of the wire body 2 in the side view (FIG. 4) so that the central axis and the filament 5 a lie in a common plane.
As shown in FIG. 2, the filaments 5 b, 5 c curve in such a way that their apexes 51 bulge toward the forward end, and they connect the forward end 41 a of the branch wire 4 a to the forward end 41 b of the branch wire 4 b.
Also, the filaments 5 b, 5 c are inclined such that the distance from each filament to the extension line of the central axis of the wire body 2 increases in the direction toward the forward end. In other words, in the side view of FIG. 4, the filament 5 b is inclined left-upward and the filament 5 c is inclined left-downward.
As shown in FIG. 3, a control means 28 is provided to control the size of the loop wire 6 a in the second state. This size controlled by the control means 28 is referred to as the “minimum loop diameter” hereinafter.
The control means 28 constructed as mentioned above protects the embolus 200 from being excessively tightened or squeezed by the loop wire 6 a. In this way it is possible to prevent the embolus 200 from being broken by the loop wire 6 a.
The capturing part 3 (loop wires 6 a, 6 b, 6 c) may be formed from various metallic materials and plastic filaments (mono- or multi-). Metallic materials include stainless steel (such as SUS 304), β-titanium steel, Co—Cr alloy, piano wire, platinum-iridium alloy (Pt90-Ir10, Pt80-Ir20), noble metal alloy, nickel-titanium alloy, and other alloys having springy properties.
The projections 11 directed into the capturing space 31 may be formed not only on the filament 5 a but also on the filaments 5 b, 5 c or on any one of the filaments 5 a, 5 b, 5 c. Also, the fine fibers 7 may be formed not only on the filament 5 a but also on the filaments 5 b, 5 c or on any one of the filaments 5 a, 5 b, 5 c.
JP2004016668A Title not available
1 European Search Report for EP 05 01 8587, dated Dec. 15, 2005.
U.S. Classification 606/114, 606/200
International Classification A61M29/00, A61B17/26, A61B17/24
Cooperative Classification A61B2017/2212, A61B17/221, A61B17/22, A61B2017/2215
European Classification A61B17/221, A61B17/22
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KANAMARU,TAKESHI;REEL/FRAME:016960/0653