Patent EP0289218A2 successfully refreshed from Google Patents.
EP0289218A2
Expired / Lapsed
EP
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A flexible composite intubation tube
Assignee: Sherwood Medical Co
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Filing: 1988-04-21
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Granted: —
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Expires: 2008-04-21
Abstract
Abstract The composite intubation tube (10) has an outer pliable outer layer (14) of plastic material and an inner concentric layer (15) made of a hydrophilic polymer which becomes very soft and flexible in a wetted state. After intubation in a patient, a flow of gastric fluids or an inflow of nutrient solution wets the inner layer so the tube becomes very soft so that pressure points on the tissue of the patient are eliminated.
Inventors
- 👤 Vincent L. Vaillancourt
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 11:06
CPC Classifications
A; A61; A61J; A61J15/00; A61J15/0003; A61J15/0026; A61M; A61M25/00; A61M25/0043; A61M2025/0063; A61M2025/0065
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
84 words
A flexible composite intubation tube comprising an outer layer (14) of plastic material having a pliable nature and an inner concentric layer (15) within said outer layer (14) defining a lumen for fluid passage and being made of a plastic hydrophilic material, said inner layer (14) being characterized in being stiff in a dry state to permit insertion of the tube into a naso-gastric passage and in being very soft and flexible in a wetted state within the naso-gastric passage without closing said lumen.
Claim 2
Dependent Claim
84 words
A flexible composite intubation tube comprising an outer layer (14) of plastic material having a pliable nature and an inner concentric layer (15) within said outer layer (14) defining a lumen for fluid passage and being made of a plastic hydrophilic material, said inner layer (14) being characterized in being stiff in a dry state to permit insertion of the tube into a naso-gastric passage and in being very soft and flexible in a wetted state within the naso-gastric passage without closing said lumen.
Claim 3
Dependent Claim
36 words
A tube as set forth in claim 1 characterized in that said outer layer (14) is made of a polyether polyurethane resin and said inner layer (15) is made of a polyurethane resin containing glycol chains.
Claim 4
Dependent Claim
37 words
A tube as set forth in any of claims 1 and 2 characterized in that said inner layer (15) has an inner diameter of 0.080 inches and said outer layer has an outer diameter of 0.113 inches.
Claim 5
Dependent Claim
25 words
A tube as set forth in claim 3 characterized in that said inner layer (15) is of a greater thickness than said outer layer (14).
Claim 6
Dependent Claim
22 words
A tube as set forth in claim 3 wherein said inner layer (15) is characterized in having a thickness of 0.011 inches.
Claim 7
Dependent Claim
27 words
A tube as set forth in any of claims 1 to 5 characterized in that said layers (14, 15) are bonded together to form an integral tube.
Claim 8
Dependent Claim
24 words
A tube as set forth in claims 1 to 4 characterized in that said layers (14, 15) are co-extruded to form a unitary construction.
Claim 9
Dependent Claim
30 words
A tube as set forth in any of claims 1 to 7 characterized in that said outer layer (14) has a Durometer of from 60A to 80A (Shore A scale).
Claim 10
Dependent Claim
24 words
A tube as set forth in any of claims 1 to 8 characterized in being a naso-gastric tube having a lumen of 0.080 inches.
References Cited (Backward Citations)
No citation records indexed.
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