Patent EP0191471A1 successfully refreshed from Google Patents.
EP0191471A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Catheter
Assignee: Terumo Corp
•
Filing: 1986-02-12
•
Granted: —
•
Expires: 2006-02-12
Abstract
Abstract A nutritive catheter is assembled by attaching a head (1) to the distal end of a main tubing having a duct (10) therethrough, the head (1) being formed from a composition comprising a flexible synthetic resin and a finely divided metal material in a ratio by volume of resin to metal material of at least 2 and having a specific gravity of at least 2. An opening (2) is provided in the head in communication with the tubing duct (10).
Inventors
- 👤 Tadashi Kousai
- 👤 Yousuke Moriuchi
- 👤 Susumu Tanabe
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 19:43
CPC Classifications
A; A61; A61J; A61J15/00; A61J15/0003; A61J15/0026; A61L; A61L29/00; A61L29/12; A61L29/126
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
94 words
A catheter comprising a main tubing having distal and proximal ends and a duct therethrough, a head attached to the distal end of the tubing, and an opening provided near the distal end of the catheter in communication with the duct of the main tubing , characterized in that said head is formed from a composition comprising a flexible synthetic resin in admixture with a finely divided metal material, with the blend ratio by volume of synthetic resin to metal material being at least 2, and has a specific gravity of at least 2.
Claim 2
Dependent Claim
94 words
A catheter comprising a main tubing having distal and proximal ends and a duct therethrough, a head attached to the distal end of the tubing, and an opening provided near the distal end of the catheter in communication with the duct of the main tubing , characterized in that said head is formed from a composition comprising a flexible synthetic resin in admixture with a finely divided metal material, with the blend ratio by volume of synthetic resin to metal material being at least 2, and has a specific gravity of at least 2.
Claim 3
Dependent Claim
16 words
The catheter of claim 1 wherein said head has a specific gravity of at least 3.
Claim 4
Dependent Claim
30 words
The catheter of claim 1 or 2 wherein said synthetic resin is selected from the group consisting of vinyl chloride resins, urethane resins, silicone resins, polyethylene, and vinyl acetate resins.
Claim 5
Dependent Claim
21 words
The catheter of claim 1 or 2 wherein said metal material is selected.from a metal, a metal compound, and mixtures thereof.
Claim 6
Dependent Claim
28 words
The catheter of claim 1 or 2 wherein said metal material is at least one member selected from the group consisting of tungsten, tungsten dioxide, and tungsten carbide.
Claim 7
Dependent Claim
13 words
The catheter of claim 1 wherein said opening is formed in said head.
Claim 8
Dependent Claim
17 words
The catheter of claim 6 wherein said opening is formed in the free end of said head.
Claim 9
Dependent Claim
16 words
The catheter of claim 1 wherein said finely divided metal material is a powdery metal material.
Claim 10
Dependent Claim
20 words
The catheter of claim 1 wherein said finely divided metal material has a particle size of up to 10 µm.
Claim 11
Dependent Claim
20 words
The catheter of claim 9 wherein said finely divided metal material has a particle size of up to 5 µm.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.