US3926705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicone catheter and process for manufacturing same
Assignee: Western Acadia Inc
•
Filing: 1974-07-25
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Granted: 1975-12-16
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Expires: 1994-07-25
Abstract
Abstract An improved catheter comprising a tubular body portion comprising a primary lumen and an inflation lumen and an outer covering, a portion of which is inflatable to form an anchoring bubble, wherein a layer of thermoplastic material is applied around the tubular catheter body in the region underlying the anchoring bubble, the thermoplastic layer containing a hole through which an inflation medium can be injected from the inflation lumen to expand a portion of the outer covering to form the anchoring bubble and the thermoplastic layer being composed of a material to which the outer covering does not adhere.
Inventors
- 👤 Donald A Todd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:10
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/1027; A61M25/1036; A61M25/0009; A61M25/0015; A61M25/0017; A61M25/01; A61M25/02; A61M25/04; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T156/1057
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
10 words
A METHOD FOR FORMING A CATHETER COMPRISING THE STEPS OF:
Claim 2
Independent Claim
10 words
A METHOD FOR FORMING A CATHETER COMPRISING THE STEPS OF:
Claim 3
Dependent Claim
12 words
FORMING A TUBULAR BODY COMPRISING A PRIMARY LUMEN AND AN INFLATION LUMEN;
Claim 4
Dependent Claim
12 words
FORMING A TUBULAR BODY COMPRISING A PRIMARY LUMEN AND AN INFLATION LUMEN;
Claim 5
Dependent Claim
20 words
FORMING A FIRST HOLE IN SAID TUBE TO PERMIT COMMUNICATION BETWEEN SAID INFLATION LUMEN AND THE EXTERIOR OF SAID TUBE;
Claim 6
Dependent Claim
20 words
FORMING A FIRST HOLE IN SAID TUBE TO PERMIT COMMUNICATION BETWEEN SAID INFLATION LUMEN AND THE EXTERIOR OF SAID TUBE;
Claim 7
Dependent Claim
20 words
forming a first hole in said tube to permit communication between said inflation lumen and the exterior of said tube;
Claim 8
Dependent Claim
20 words
forming a first hole in said tube to permit communication between said inflation lumen and the exterior of said tube;
Claim 9
Dependent Claim
26 words
The method of claim 1 wherein the step of forming said tubular body comprises extruding a silicone tube comprising a primary lumen and an inflation lumen.
Claim 10
Dependent Claim
30 words
The method of claim 2 wherein prior to the step of applying said outer layer of covering material a silicone tip is molded to the distal end of said tube.
Claim 11
Dependent Claim
18 words
applying a thin layer of thermoplastic material around the exterior of said tube to overlap said first hole;
Claim 12
Dependent Claim
18 words
applying a thin layer of thermoplastic material around the exterior of said tube to overlap said first hole;
Claim 13
Dependent Claim
18 words
APPLYING A THIN LAYER OF THERMOPLASTIC MATERIAL AROUND THE EXTERIOR OF SAID TUBE TO OVERLAP SAID FIRST HOLE;
Claim 14
Dependent Claim
18 words
APPLYING A THIN LAYER OF THERMOPLASTIC MATERIAL AROUND THE EXTERIOR OF SAID TUBE TO OVERLAP SAID FIRST HOLE;
Claim 15
Dependent Claim
26 words
APPLYING AN OUTER LAYER OF COVERING MATERIAL, WHICH DOES NOT ADHERE TO THE THERMOPLASTIC MATERIAL, TO THE EXTERIOR OF SAID TUBE TO FORM A COVERED TUBE;
Claim 16
Dependent Claim
26 words
APPLYING AN OUTER LAYER OF COVERING MATERIAL, WHICH DOES NOT ADHERE TO THE THERMOPLASTIC MATERIAL, TO THE EXTERIOR OF SAID TUBE TO FORM A COVERED TUBE;
Claim 17
Dependent Claim
26 words
applying an outer layer of covering material, which does not adhere to the thermoplastic material, to the exterior of said tube to form a covered tube;
Claim 18
Dependent Claim
26 words
applying an outer layer of covering material, which does not adhere to the thermoplastic material, to the exterior of said tube to form a covered tube;
Claim 19
Dependent Claim
34 words
The method of claim 1 wherein the step of applying an outer layer of covering material comprises dipping said tube in a silicone solution to form an outer layer and drying said outer layer.
Claim 20
Dependent Claim
46 words
The method of claim 4 wherein the step of forming said third hole comprises subjecting the outer layer of said catheter to a point adjacent said first hole to a heat sufficient to melt a hole in said thermoplastic material without melting said silicone outer layer.
Claim 21
Dependent Claim
23 words
forming a second hole in the covered tube to permit communication between said primary lumen and the exterior of saod covered tube; and
Claim 22
Dependent Claim
23 words
forming a second hole in the covered tube to permit communication between said primary lumen and the exterior of saod covered tube; and
Claim 23
Dependent Claim
23 words
FORMING A SECOND HOLE IN THE COVERED TUBE TO PERMIT COMMUNICATION BETWEEN SAID PRIMARY LUMEN AND THE EXTERIOR OF SAID COVERED TUBE; AND
Claim 24
Dependent Claim
23 words
FORMING A SECOND HOLE IN THE COVERED TUBE TO PERMIT COMMUNICATION BETWEEN SAID PRIMARY LUMEN AND THE EXTERIOR OF SAID COVERED TUBE; AND
Claim 25
Dependent Claim
12 words
FORMING A THIRD HOLE IN SAID THERMOPLASTIC MATERIAL ADJACENT SAID FIRST HOLE.
Claim 26
Dependent Claim
12 words
FORMING A THIRD HOLE IN SAID THERMOPLASTIC MATERIAL ADJACENT SAID FIRST HOLE.
Claim 27
Dependent Claim
12 words
forming a third hole in said thermoplastic material adjacent said first hole.
Claim 28
Dependent Claim
12 words
forming a third hole in said thermoplastic material adjacent said first hole.
Claim 29
Dependent Claim
62 words
The method of claim 1 wherein the step of applying a thin layer of thermoplastic material comprises applying a thin layer of thermoplastic tape whose adhesive side adheres to said tubular body, whose opposite side does not adhere to the outer layer of covering material, and which melts at a temperature significantly lower than that of said outer layer of covering material.
Claim 30
Dependent Claim
36 words
The method of claim 1 wherein the step of applying a thin layer of thermoplastic material comprises applying a thin layer of unreinforced tape of a member selected from the group consisting of polyethylene and polypropylene.
Claim 31
Dependent Claim
55 words
The method of claim 1 wherein the step of forming said tubular body comprises extruding a silicone tube comprising a primary lumen and an inflation lumen and the step of applying an outer layer of covering material comprises dipping said tube in a silicone solution to form an outer layer and drying said outer layer.
Claim 32
Dependent Claim
55 words
The method of claim 6 wherein the step of forming said tubular body comprises extruding a silicone tube comprising a primary lumen and an inflation lumen and the step of applying an outer layer of covering material comprises dipping said tube in a silicone solution to form an outer layer and drying said outer layer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |