US5156597A
Expired / Lapsed
US
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Transcutaneous implantation catheter
Assignee: B Braun Melsungen AG
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Filing: 1990-12-19
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Granted: 1992-10-20
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Expires: 2010-12-19
Abstract
Abstract Intermediate an intracorporal first section and an extracorporal third section, a transcutaneous implantation catheter has a second section entirely consisting of an open-pore fiber fabric having a porous outer surface. It is particularly advantageous for a fast growing-in process that is not inflammatory and for a good transition from the subcutaneous connective tissue to the area of the skin epithelium, if the porosity (the spaces between the fabric fibrils) increases from the inside to the outside of the catheter. This allows the tissue to grow into the second section of the catheter. The implantation tunnel closes completely so that no liquid collections are allowed to be formed between the catheter and the tissue. The risk of infections is reduced. The first section is of the same material as the second section, but has a smooth surface and a wall of solid material.
Inventors
- 👤 Patrick Verreet
- 👤 Claus Haacke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:45
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/02; A61M25/04; A61M25/0043; A61F; A61F2/00; A61F2/0077; A61F2250/00; A61F2250/0014; A61F2250/0023; A61M2025/0286
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
86 words
A transcutaneous implantation catheter for implantation in a tunneling zone in a body cavity, comprising: a first section configured for intracorporal placement, a second substantially tubular section configured for implantation in the tunneling zone, and a third section configured for extracorporal placement, the second section defining an inside and an outside and comprising a non-woven fiber fabric having a fibrillary open-pore structure defining a mean fiber spacing, the mean fiber spacing increasing from the inside of the second section to the outside of the second section.
Claim 2
Dependent Claim
86 words
A transcutaneous implantation catheter for implantation in a tunneling zone in a body cavity, comprising: a first section configured for intracorporal placement, a second substantially tubular section configured for implantation in the tunneling zone, and a third section configured for extracorporal placement, the second section defining an inside and an outside and comprising a non-woven fiber fabric having a fibrillary open-pore structure defining a mean fiber spacing, the mean fiber spacing increasing from the inside of the second section to the outside of the second section.
Claim 3
Dependent Claim
106 words
A transcutaneous implantation catheter for implantation in a tunneling zone in a body cavity, comprising: a first section configured for intracorporal placement, a second section configured for implantation in the tunneling zone, and a third section configured for extracorporal placement, the second section defining an inside and an outside and comprising a non-woven fiber fabric having a fibrillary open-pore structure defining a mean fiber spacing, the mean fiber spacing increasing from the inside of the second section to the outside of the second section, wherein the mean fiber spacing increases in steps from the inside of the second section to the outside of the second section.
Claim 4
Dependent Claim
106 words
A transcutaneous implantation catheter for implantation in a tunneling zone in a body cavity, comprising: a first section configured for intracorporal placement, a second section configured for implantation in the tunneling zone, and a third section configured for extracorporal placement, the second section defining an inside and an outside and comprising a non-woven fiber fabric having a fibrillary open-pore structure defining a mean fiber spacing, the mean fiber spacing increasing from the inside of the second section to the outside of the second section, wherein the mean fiber spacing increases in steps from the inside of the second section to the outside of the second section.
Claim 5
Dependent Claim
33 words
The transcutaneous implantation catheter of claim 1, wherein the second and third sections are integrally formed and are made of the same material and wherein the third section comprises a closed smooth sheathing.
Claim 6
Dependent Claim
32 words
The transcutaneous implantation catheter of claim 1, comprising auxiliary means provided between the first and second sections for enabling suturing and the growth of tissue onto a passage into the body cavity.
Claim 7
Dependent Claim
14 words
The transcutaneous implantation catheter of claim 4, wherein the auxiliary means comprises a disc.
Claim 8
Dependent Claim
14 words
The transcutaneous implantation catheter of claim 4, wherein the auxiliary means comprises a ball.
Claim 9
Dependent Claim
22 words
The transcutaneous implantation catheter of claim 4, wherein the auxiliary means comprises a portion of the catheter defining an annular groove therein.
Claim 10
Dependent Claim
17 words
The transcutaneous implantation catheter of claim 1, wherein the second section comprises a helically extending reinforcing thread.
Claim 11
Dependent Claim
101 words
A transcutaneous implantation catheter for implantation in a tunneling zone in a body cavity, comprising: a first section configured for intracorporal placement, a second section configured for implantation in the tunneling zone, and a third section configured for extracorporal placement, the second section defining an inside and an outside and comprising a non-woven fiber fabric having a fibrillary open-pore structure defining a mean fiber spacing, the mean fiber spacing increasing from the inside of the second section to the outside of the second section, wherein the fiber fabric comprises fibers having a thickness of between approximately 4 μm and 5 μm.
Claim 12
Dependent Claim
101 words
A transcutaneous implantation catheter for implantation in a tunneling zone in a body cavity, comprising: a first section configured for intracorporal placement, a second section configured for implantation in the tunneling zone, and a third section configured for extracorporal placement, the second section defining an inside and an outside and comprising a non-woven fiber fabric having a fibrillary open-pore structure defining a mean fiber spacing, the mean fiber spacing increasing from the inside of the second section to the outside of the second section, wherein the fiber fabric comprises fibers having a thickness of between approximately 4 μm and 5 μm.
Claim 13
Dependent Claim
13 words
The transcutaneous implantation catheter of claim 1, wherein the fiber fabric comprises polyurethane.
Claim 14
Dependent Claim
97 words
A transcutaneous implantation catheter for implantation in a tunneling zone in a body cavity, comprising: a first section configured for intracorporal placement, a second section configured for implantation in the tunneling zone, and a third section configured for extracorporal placement, the second section defining an inside and an outside and comprising a non-woven fiber fabric having a fibrillary open-pore structure defining a mean fiber spacing, the mean fiber spacing increasing from the inside of the second section to the outside of the second section, wherein the second section is softer and more flexible than the first section.
Claim 15
Dependent Claim
97 words
A transcutaneous implantation catheter for implantation in a tunneling zone in a body cavity, comprising: a first section configured for intracorporal placement, a second section configured for implantation in the tunneling zone, and a third section configured for extracorporal placement, the second section defining an inside and an outside and comprising a non-woven fiber fabric having a fibrillary open-pore structure defining a mean fiber spacing, the mean fiber spacing increasing from the inside of the second section to the outside of the second section, wherein the second section is softer and more flexible than the first section.
Claim 16
Dependent Claim
18 words
The transcutaneous implantation catheter of claim 1, wherein the second section defines a length of about 5 cm.
Claim 17
Dependent Claim
119 words
A transcutaneous implantation catheter for implantation in a tunneling zone in a body cavity, comprising: a first section configured for intracorporal placement, a second section configured for implantation in the tunneling zone, and a third section configured for extracorporal placement, the second section defining an inside and an outside and comprising a non-woven fiber fabric having a fibrillary open-pore structure defining a mean fiber spacing. the mean fiber spacing increasing from the inside of the second portion to the outside of the second section, wherein the mean fiber spacing in the fiber fabric increases from the inside of the second section to the outside of the second section in a range from about 40 μm to about 600 μm.
Claim 18
Dependent Claim
119 words
A transcutaneous implantation catheter for implantation in a tunneling zone in a body cavity, comprising: a first section configured for intracorporal placement, a second section configured for implantation in the tunneling zone, and a third section configured for extracorporal placement, the second section defining an inside and an outside and comprising a non-woven fiber fabric having a fibrillary open-pore structure defining a mean fiber spacing. the mean fiber spacing increasing from the inside of the second portion to the outside of the second section, wherein the mean fiber spacing in the fiber fabric increases from the inside of the second section to the outside of the second section in a range from about 40 μm to about 600 μm.
Claim 19
Dependent Claim
16 words
The transcutaneous implantation catheter of claim 1, wherein the first section comprises flexible solid plastic material.
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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) | 1995-10-20 | 1996-04-20 | 1996-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-20 | 2000-04-20 | 2000-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-20 | 2004-04-20 | 2004-10-20 | $7700.00 | Window Closed / Lapsed |