EP0464755A1
Expired / Lapsed
EP
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Artificial tubular organ
Assignee: Nissho Corp
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Filing: 1991-07-01
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Granted: —
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Expires: 2011-07-01
Abstract
Abstract An artificial tubular organ composed of a tubular supporting frame (1) made of a plastic material and provided on its at least one surface with a medical prosthetic material (10). The supporting frame (1) is composed of a plurality of ring portions (2) arranged on an axis (A), and a plural pairs of connecting portions (3) extending between neighboring two ring portions (2) to connect then each other, every other pairs of the connecting portions (3) being diametrically arranged on the ring portions (2), the remaining pairs of the connecting portions (3) being arranged such that the plane containing their center lines intersects at right angles with the plane containing the center lines of a pair of diametrically arranged connecting portions (3). The medical prosthetic material (10) may be a woven fabric, a knitted fabric, a nonwoven fabric, or a combination thereof. Preferred fabric comprises absorbable macromolecular yarns (11,13) and nonabsorbable macromolecular yarns (12,14).
Inventors
- 👤 Yoshihiko Kubo
- 👤 Takashi Arai
- 👤 Susumu Nakajima
- 👤 Tomiyo Maeda
- 👤 Hajime Tsujikawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 07:02
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61L; A61L27/00; A61L27/14; D; D03; D03D; D03D15/00; D03D15/20; D03D15/283; D03D15/50; D03D3/00; D03D3/02; A61F2/82; A61F2/86; A61F2/90; A61F2002/065; A61F2002/075; A61F2210/00; A61F2210/0004; A61L2430/00; A61L2430/22; D10; D10B; D10B2201/00; D10B2201/20; D10B2321/00; D10B2321/02; D10B2321/021; D10B2321/022; D10B2321/04; D10B2321/042; D10B2321/06; D10B2331/00; D10B2331/02; D10B2331/04; D10B2331/10; D10B2401/00; D10B2401/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
135 words
An artificial tubular organ composed of a tubular supporting frame made of a plastic material and provided on its at least one surface with a medical prosthetic material, said supporting frame being composed of a plurality of ring portions arranged on an axis, and a plural pairs of connecting portions extending between neighboring two ring portions to connect them each other, every other pairs of said connecting portions being diametrically arranged on said ring portions, the remaining pairs of said connecting portions being arranged such that the plane containing their center lines intersects at right angles with the plane containing the center lines of a pair of diametrically arranged connecting portions, said medical prosthetic material being composed of at least one fabric selected from the group consisting of woven fabrics, nonwoven fabrics, and knitted fabrics.
Claim 2
Dependent Claim
135 words
An artificial tubular organ composed of a tubular supporting frame made of a plastic material and provided on its at least one surface with a medical prosthetic material, said supporting frame being composed of a plurality of ring portions arranged on an axis, and a plural pairs of connecting portions extending between neighboring two ring portions to connect them each other, every other pairs of said connecting portions being diametrically arranged on said ring portions, the remaining pairs of said connecting portions being arranged such that the plane containing their center lines intersects at right angles with the plane containing the center lines of a pair of diametrically arranged connecting portions, said medical prosthetic material being composed of at least one fabric selected from the group consisting of woven fabrics, nonwoven fabrics, and knitted fabrics.
Claim 3
Dependent Claim
27 words
An artificial tubular organ according to claim 1 wherein each pair of the connecting portions of the tubular supporting frame are diametrically arranged between the ring portions.
Claim 4
Dependent Claim
47 words
An artificial tubular organ according to claim 1 or 2 wherein said medical prosthetic material is composed of a fabric selected from the group consisting of woven fabrics, nonwoven fabrics, and knitted fabrics, and wherein the fabric is composed of absorbable macromolecular yarns and nonabsorbable macromolecular yarns.
Claim 5
Dependent Claim
34 words
An artificial tubular organ according to claim 1, 2 or 3 wherein yarns are double yarns or twist yarns composed of at least one absorbable macromolecular yarns and at least one nonabsorbable macromolecular yarns.
Claim 6
Dependent Claim
29 words
An artificial tubular organ according to any one of claims 1 to 4 wherein the fabric is a union cloth composed of absorbable macromolecular yarns and nonabsorbable macromolecular yarns.
Claim 7
Dependent Claim
43 words
An artificial tubular organ according to claim 3, 4 or 5 wherein nonabsorbable macromolecular yarns is composed of fibers made of a material selected from the group consisting of polyesters, polyolefins, polyamide resins, fluoroplastics, chlorine resins, polyurethane resins, cellulose derivatives, and natural fibers.
Claim 8
Dependent Claim
24 words
An artificial tubular organ according to any one of claims 3 to 6 wherein nonabsorbable macromolecular yarns is composed of one of polyolefine fibers.
Claim 9
Dependent Claim
23 words
An artificial tubular organ according to any one of claims 3 to 7 wherein said fabrics or yarns are coated with a protein.
Claim 10
Dependent Claim
57 words
An artificial tubular organ according to any one of claims 3 to 8 wherein said absorbable macromolecular yearns are included in the fabric so that they are dissolved and absorbed in the organism after implantation to form openings or pores having an average diameter of 110 µm and being present at least 20 % in the fabric.
References Cited (Backward Citations)
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