US4402685A
Expired / Lapsed
US
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Dividable catheter
Assignee: B Braun Surgical AG
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Filing: 1980-06-24
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Granted: 1983-09-06
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Expires: 2000-06-24
Abstract
Abstract A dividable short catheter tube made of a modifying polymer intermixed with, or inserted into, a base polymer. The modifying polymer is usually one which is incompatible with the base polymer. The dividable short catheter tube is readily tearable longitudinally so that it can be removed from around a flexible catheter after the flexible catheter has been guided into a patient by means of the short catheter previously positioned in a body puncture. The tube can be extruded from a mixture of the two polymers or it can be extruded with modifying polymer longitudinal strips in walls of the base polymer.
Inventors
- 👤 Wolfgang Buhler
- 👤 Franz W. Brunner
- 👤 Bodo Schacht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:49
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; A; A61; A61L; A61L29/00; A61L29/04; A61L29/049; A61M; A61M25/00; A61M25/0009; A61M25/01; A61M25/06; A61M25/0662; A61M25/0668; C08L23/10; C08L23/12; C08L23/14; C08L23/142; Y; Y10; Y10S; Y10S525/00; Y10S525/931
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
42 words
A short catheter tube dividable longitudinally be tearing comprising a tube wall made of modifying polymer intermixed with a base polymer incompatible with the modifying polymer, with both the base polymer and the modifying polymer being inert to human blood and tissue.
Claim 2
Dependent Claim
42 words
A short catheter tube dividable longitudinally be tearing comprising a tube wall made of modifying polymer intermixed with a base polymer incompatible with the modifying polymer, with both the base polymer and the modifying polymer being inert to human blood and tissue.
Claim 3
Dependent Claim
44 words
A dividable short catheter according to claim 1 in which the base polymer is polypropylene and the modifying polymer is a (1) polyacrylate homo or copolymer, (2) polymethacrylate homo or copolymer, (3) polystyrene homo or copolymer, (4) polymethypentene-1, (5) polybutylene-1, or (6) polyethylene copolymer.
Claim 4
Dependent Claim
44 words
A dividable short catheter according to claim 1 in which the base polymer is polyethylene and the modifying polymer is a (1) polypropylene copolymer (2) polybutylene-1, (3) polymethylpentene-1, (4) polyacrylate homo or copolymer, (5) polymethacrylate homo or copolymer, or (6) polystyrene homo or copolymer.
Claim 5
Dependent Claim
36 words
A dividable short catheter according to claim 1 in which the base polymer is polyvinylchloride and the modifying polymer is a (1) polyethylene homo or copolymer, (2) polypropylene homo or copolymer, (3) polymethylpentene-1, or (4) polybutylene-1.
Claim 6
Dependent Claim
27 words
A dividable short catheter tube according to claim 1 in which the amount of modifying polymer is about 0.5 to 40 weight percent of the base polymer.
Claim 7
Dependent Claim
27 words
A dividable short catheter tube according to claim 1 in which the amount of modifying polymer is about 5 to 25 weight percent of the base polymer.
Claim 8
Dependent Claim
22 words
A dividable short catheter tube according to claim 1 in which the base polymer is polypropylene and the modifying polymer is polyethylene.
Claim 9
Dependent Claim
22 words
A dividable short catheter tube according to claim 1 in which the base polymer is polyethylene and the modifying polymer is polypropylene.
Claim 10
Dependent Claim
25 words
A dividable short catheter tube according to claim 1 in which the tube is an extruded mixture of the base polymer and the modifying polymer.
Claim 11
Dependent Claim
34 words
A dividable short catheter tube according to claim 1 in which the tube is an extruded mixture and the amount of modifying polymer is about 0.5 to 40 weight percent of the base polymer.
Claim 12
Dependent Claim
34 words
A dividable short catheter tube according to claim 1 in which the tube is an extruded mixture and the amount of modifying polymer is about 5 to 25 weight percent of the base polymer.
Claim 13
Dependent Claim
59 words
A short catheter tube dividable longitudinally by tearing comprising a tube wall made of a base polymer and having at least two longitudinal strips of modifying polymer that extend the length thereof, wherein said base polymer and said modifying polymer are incompatible and inert to human blood and tissue whereby said catheter tube is dividable along said longitudinal strips.
Claim 14
Dependent Claim
59 words
A short catheter tube dividable longitudinally by tearing comprising a tube wall made of a base polymer and having at least two longitudinal strips of modifying polymer that extend the length thereof, wherein said base polymer and said modifying polymer are incompatible and inert to human blood and tissue whereby said catheter tube is dividable along said longitudinal strips.
Claim 15
Dependent Claim
44 words
A dividable short catheter according to claim 12 in which the base polymer is polypropylene and the modifying polymer is a (1) polyacrylate homo or copolymer, (2) polymethacrylate homo or copolymer, (3) polystyrene homo or copolymer, (4) polymethylpentene-1, (5) polybutylene-1, or (6) polyethylene copolymer.
Claim 16
Dependent Claim
44 words
A dividable short catheter according to claim 12 in which the base polymer is polyethylene and the modifying polymer is a (1) polypropylene copolymer (2) polybutylene-1, (3) polymethylpentene-1, (4) polyacrylate homo or copolymer, (5) polymethacrylate homo or copolymer, or (6) polystyrene homo or copolymer.
Claim 17
Dependent Claim
36 words
A dividable short catheter according to claim 12 in which the base polymer is polyvinylchloride and the modifying polymer is a (1) polyethylene homo or copolymer, (2) polypropylene homo or copolymer, (3) polymethylpentene-1, or (4) polybutylene-1.
Claim 18
Dependent Claim
27 words
A dividable short catheter tube according to claim 12 in which the amount of modifying polymer is about 0.5 to 40 weight percent of the base polymer.
Claim 19
Dependent Claim
27 words
A dividable short catheter tube according to claim 12 in which the amount of modifying polymer is about 5 to 25 weight percent of the base polymer.
Claim 20
Dependent Claim
22 words
A dividable short catheter tube according to claim 12 in which the base polymer is polypropylene and the modifying polymer is polyethylene.
Claim 21
Dependent Claim
22 words
A dividable short catheter tube according to claim 12 in which the base polymer is polyethylene and the modifying polymer is polypropylene.
Claim 22
Dependent Claim
25 words
A dividable short catheter tube according to claim 12 in which the tube is an extruded mixture of the base polymer and the modifying polymer.
Claim 23
Dependent Claim
32 words
A dividable short catheter tube according to claim 12 in which the tube wall comprises the base polymer and the tube wall contains only two longitudinal strips of modifying polymer offset 180°.
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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) | 1986-09-05 | 1987-03-07 | 1987-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-05 | 1991-03-07 | 1991-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-05 | 1995-03-07 | 1995-09-06 | $7700.00 | Window Closed / Lapsed |