US4737153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced therapeutic tube
Assignee: Kuraray Co Ltd
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Filing: 1987-02-04
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Granted: 1988-04-12
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Expires: 2007-02-04
Abstract
Abstract A reinforced therapeutic tube which is excellent in kink resistance, pressure resistance and flexibility. The tube is made of an elastomeric material with a reinforcing material spirally embedded into the tube wall, and at least one of the tubular parts where no spiral reinforcing material exists. The tip end of the reinforcing material which is wound in spiral shape is bent parallel to the inside surface of the tube and inward of the tube for at least one or more pitches of the spiral, and at least the tip of the reinforcing material bent is buried into the inside wall of the tube.
Inventors
- 👤 Hidehiko Shimamura
- 👤 Yoshihiko Yamada
- 👤 Hiroyuki Akasu
- 👤 Akio Ohmory
- 👤 Toshiaki Takagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:31
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0402; A61M16/0425; A61M16/0434
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
81 words
A reinforced therapeutic tube axially integrally formed of a tube body with a reinforcing material spirally embedded into the tube wall and at least one of tubular parts where no spiral reinforcing material exists, characterized in that at least one end of the spiral shape reinforcing material is bent inward of the tube to a length such that it is engaged onto at least a neighboring spiral turn, and moreover, at least its bent tip is buried in the tube wall.
Claim 2
Dependent Claim
81 words
A reinforced therapeutic tube axially integrally formed of a tube body with a reinforcing material spirally embedded into the tube wall and at least one of tubular parts where no spiral reinforcing material exists, characterized in that at least one end of the spiral shape reinforcing material is bent inward of the tube to a length such that it is engaged onto at least a neighboring spiral turn, and moreover, at least its bent tip is buried in the tube wall.
Claim 3
Dependent Claim
22 words
The reinforced therapeutic tube of claim 1 wherein the tubular parts are axially integrally formed at both ends of the tube body.
Claim 4
Dependent Claim
16 words
The reinforced therapeutic tube of claim 2 wherein one of the tubular parts is an accepter.
Claim 5
Dependent Claim
16 words
The reinforced therapeutic tube of claim 1 wherein the tube body is composed of segmented polyurethane.
Claim 6
Dependent Claim
16 words
The reinforced therapeutic tube of claim 1 wherein the tube body is composed of polyvinyl chloride.
Claim 7
Dependent Claim
22 words
The reinforced therapeutic tube of claim 1 wherein the reinforced material has initial tensile resistivity higher than 1×10 4 kg-f/mm 2 .
Claim 8
Dependent Claim
14 words
The reinforced therapeutic tube of claim 1 wherein the reinforcing material is tungsten wire.
Claim 9
Dependent Claim
22 words
The reinforced therapeutic tube of claim 1 wherein the length of reinforcing material bent back inward of the tube is 1-30 mm.
Claim 10
Dependent Claim
25 words
The reinforced therapeutic tube of claim 1 wherein the reinforcing material is wound in spiral shape on the core-tube by a pitch of 0.1-4 mm.
Claim 11
Dependent Claim
15 words
The reinforced therapeutic tube of claim 1 wherein the tube is a tube for catheter.
Claim 12
Dependent Claim
16 words
The reinfoced therapeutic tube of claim 10 wherein the overall length of tube is 5-100 cm.
Claim 13
Dependent Claim
16 words
The reinforced therapeutic tube of claim 10 wherein the overall length of tube is 10-45 cm.
Claim 14
Dependent Claim
16 words
The reinforced therapeutic tube of claim 10 wherein the ID of the tube is 0.2-20 mm.
Claim 15
Dependent Claim
16 words
The reinfoecde therapeutic tube of claim 10 wherein the ID of the tube is 2-12 mm.
Claim 16
Dependent Claim
14 words
The reinforced therapeutic tube of claim 10 wherein the wall thickness is 0.2-1.5 mm.
Claim 17
Dependent Claim
16 words
The reinforced therapeutic tube of claim 1 wherein the tube is a tube for endotracheal tube.
Claim 18
Dependent Claim
17 words
The reinforced therapeutic tube of claim 16 wherein the overall length of the tube is 5-50 cm.
Claim 19
Dependent Claim
17 words
The reinforced therapeutic tube of claim 16 wherein the overall length of the tube is 15-35 cm.
Claim 20
Dependent Claim
13 words
The reinforced therapeutic tube of claim 16 wherein the ID is 0.2-20 mm.
Claim 21
Dependent Claim
16 words
The reinforced therapeutic tube of claim 16 wherein the ID of the tube is 2-8 mm.
Claim 22
Dependent Claim
14 words
The reinforced therapeutic tube of claim 16 wherein the wall thickness is 0.15-1.5 mm.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-12 | 1991-10-12 | 1992-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-12 | 1995-10-12 | 1996-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-12 | 1999-10-12 | 2000-04-12 | $7700.00 | Window Closed / Lapsed |