US5308338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter or the like with medication injector to prevent infection
Assignee: Individual
•
Filing: 1993-04-22
•
Granted: 1994-05-03
•
Expires: 2013-04-22
Abstract
Abstract A peritoneal dialysis catheter has annular cuffs at one or more locations along its length. The cuffs are of a woven material to promote tissue ingrowth and thereby anchor the catheter to the body. The catheter has internal channels extending from ports located outside the body to deliver disinfecting fluid to the space between the cuffs and the catheter exterior, preventing infections from reaching the cuffs and reducing the frequency of new implants.
Inventors
- 👤 G. Baird Helfrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:08
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0017; A61M1/00; A61M1/14; A61M1/28; A61M1/285; A61M39/00; A61M39/10; A61M39/16; A61M25/01; A61M25/02; A61M2025/0293
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
252 words
A catheter comprising: a) a tubular body having a tube wall, proximal and distal ends, and an exterior surface, adapted to be positioned in an operative position in a living body wall such that said proximal end is positioned outside the living body and said distal end lies within the living body inwardly of the body wall; b) at least one primary interior channel within said tubular body, extending substantially the entire length of said tubular body and having openings at said proximal and distal ends, the opening at said distal end being positioned to communicate with the interior of the living body when said tubular body is in its operative position; c) a cuff having proximal and distal ends and comprising an inner base sleeve and a outer porous cylindrical pad mounted on said inner base sleeve and flow ports extending through said inner base sleeve and said tubular body; said inner base sleeve being disposed annularly and engagingly around said tubular body, and adapted to be located within the body wall of the living body when said tubular body is in its operative position; d) a secondary channel within said tubular body, extending from said proximal end a distance along said tubular body and being positioned to communicate with said flow ports extending through said tube wall at a point located between said proximal and distal ends of said cuff, said secondary channel permitting the introduction of disinfectant fluid through said flow ports to engage and cleanse the body wall.
Claim 2
Dependent Claim
252 words
A catheter comprising: a) a tubular body having a tube wall, proximal and distal ends, and an exterior surface, adapted to be positioned in an operative position in a living body wall such that said proximal end is positioned outside the living body and said distal end lies within the living body inwardly of the body wall; b) at least one primary interior channel within said tubular body, extending substantially the entire length of said tubular body and having openings at said proximal and distal ends, the opening at said distal end being positioned to communicate with the interior of the living body when said tubular body is in its operative position; c) a cuff having proximal and distal ends and comprising an inner base sleeve and a outer porous cylindrical pad mounted on said inner base sleeve and flow ports extending through said inner base sleeve and said tubular body; said inner base sleeve being disposed annularly and engagingly around said tubular body, and adapted to be located within the body wall of the living body when said tubular body is in its operative position; d) a secondary channel within said tubular body, extending from said proximal end a distance along said tubular body and being positioned to communicate with said flow ports extending through said tube wall at a point located between said proximal and distal ends of said cuff, said secondary channel permitting the introduction of disinfectant fluid through said flow ports to engage and cleanse the body wall.
Claim 3
Dependent Claim
110 words
The catheter of claim 1, additionally including a second cuff having proximal and distal ends and comprising a second inner base sleeve and a second outer porous cylindrical pad mounted on said second inner base sleeve and second flow port means extending through said second inner base sleeve and said tubular body and communicating with said secondary channel; said second inner base sleeve being bonded to said tubular body at a location spaced axially from said first base sleeve so that said cuffs are positioned to engage inner and outer portions of the interior of the body wall of the living body when said catheter is in its operative position.
Claim 4
Dependent Claim
34 words
A catheter as recited in claim 2, wherein said porous pad is formed of randomly oriented fibrous material compatible with the ingrowth of human tissue when said tubular body is in its operative position.
Claim 5
Dependent Claim
41 words
A catheter as recited in claim 2, wherein at least one of said base sleeves includes a plurality of square in cross-section protrusions separated by open flow-permitting spaces with said porous pad being mounted on the outer ends of said protrusions.
Claim 6
Dependent Claim
39 words
A catheter as recited in claim 2, wherein at least one of said base sleeves includes a plurality of semicircular protrusions separated by open flow-permitting spaces, with said porous pad being mounted on the outer ends of said protrusions.
Claim 7
Dependent Claim
43 words
A catheter as recited in claim 2, wherein at least one of said base sleeves includes a plurality of raised strips between which spiral open flow passages are provided with said porous pad being mounted on the upper extent of said raised strips.
Claim 8
Dependent Claim
40 words
A catheter as recited in claim 2 wherein said cuffs are spaced apart so as to be engageable with inner and outer interior portions of the abdominal wall of a human being, whereby said catheter is usable for peritoneal dialysis.
Claim 9
Dependent Claim
34 words
A catheter as recited in claim 7, wherein said porous pad is formed of randomly oriented fibrous material compatible with the ingrowth of living tissue when said tubular body is in its operative position.
Claim 10
Dependent Claim
134 words
The catheter of claim 7 additionally including a second cuff having proximal and distal ends and comprising a second inner base sleeve and a second outer porous cylindrical pad mounted on said second inner base sleeve and second flow port means extending through said second inner base sleeve and adjacent portions of said tubular body; a second secondary channel extending length-wise of said tubular body and isolated from said primary interior channel and communicating with said second flow port means, said second base sleeve being bonded to said tubular body at a location spaced axially from said first base sleeve so that said first and second cuffs are positioned to engage inner and outer portions of the interior of the body wall of the living body when said catheter is in its operative position.
Claim 11
Dependent Claim
34 words
A catheter as recited in claim 9, wherein said porous pad is formed of randomly oriented fibrous material compatible with the ingrowth of human tissue when said tubular body is in its operative position.
Claim 12
Dependent Claim
134 words
The catheter of claim 1 additionally including a second cuff having proximal and distal ends and comprising a second inner base sleeve and a second outer porous cylindrical pad mounted on said second inner base sleeve and second flow port means extending through said second inner base sleeve and adjacent portions of said tubular body; a second secondary channel extending length-wise of said tubular body and isolated from said primary interior channel and communicating with said second flow port means, said second base sleeve being bonded to said tubular body at a location spaced axially from said first base sleeve so that said first and second cuffs are positioned to engage inner and outer portions of the interior of the body wall of the living body when said catheter is in its operative position.
Claim 13
Dependent Claim
34 words
A catheter as recited in claim 11, wherein said porous pad is formed of randomly oriented fibrous material compatible with the ingrowth of living tissue when said tubular body is in its operative position.
Claim 14
Dependent Claim
40 words
A catheter as recited in claim 11, wherein at least one of said base sleeves includes a plurality of square cross-section protrusions separated by open flow-permitting spaces with said porous pad being mounted on the outer ends of said protrusions.
Claim 15
Dependent Claim
39 words
A catheter as recited in claim 11, wherein at least one of said base sleeves includes a plurality of semicircular protrusions separated by open flow-permitting spaces with said porous pad being mounted on the outer ends of said protrusions.
Claim 16
Dependent Claim
43 words
A catheter as recited in claim 11, wherein at least one of said base sleeves includes a plurality of raised strips between which spiral open flow passages are provided with said porous pad being mounted on the upper extent of said raised strips.
Claim 17
Dependent Claim
51 words
A catheter as recited in claim 1 additionally including a radial annular fluid impervious seal having an outer surface engageable with the living body wall provided adjacent the proximal end of said cuff and dimensioned so that it prevents passage of disinfectant fluid inwardly from the body wall beyond the cuff.
Claim 18
Dependent Claim
110 words
The catheter of claim 16, additionally including a second cuff having proximal and distal ends and comprising a second inner base sleeve and a second outer porous cylindrical pad mounted on said second inner base sleeve and second flow port means extending through said second inner base sleeve and said tubular body and communicating with said secondary channel; said second inner base sleeve being bonded to said tubular body at a location spaced axially from said first base sleeve so that said cuffs are positioned to engage inner and outer portions of the interior of the body wall of the living body when said catheter is in its operative position.
Claim 19
Dependent Claim
134 words
The catheter of claim 16 additionally including a second cuff having proximal and distal ends and comprising a second inner base sleeve and a second outer porous cylindrical pad mounted on said second inner base sleeve and second flow port means extending through said second inner base sleeve and adjacent portions of said tubular body; a second secondary channel extending length-wise of said tubular body and isolated from said primary interior channel and communicating with said second flow port means, said second base sleeve being bonded to said tubular body at a location spaced axially from said first base sleeve so that said first and second cuffs are positioned to engage inner and outer portions of the interior of the body wall of the living body when said catheter is in its operative position.
Claim 20
Dependent Claim
34 words
A catheter as recited in claim 18, wherein said porous pad is formed of randomly oriented fibrous material compatible with the ingrowth of living tissue when said tubular body is in its operative position.
Claim 21
Dependent Claim
207 words
An elongated, cylindrical body implant having an outer surface, a primary channel within said body implant extending substantially the entire length of said body implant, a distal end and a proximal end, which implant is adapted to be positioned in an operative position in a living body wall such that said proximal end is positioned outside the living body and said distal end lies within the living body inwardly of the body wall; said implant including: a) a cuff having proximal and distal ends and comprising an inner base sleeve and an outer, porous, cylindrical pad mounted externally on said inner base sleeve, wherein said inner base sleeve is secured to the outer surface of the body implant, flow ports extending through said inner base sleeve to said body implant; said inner base sleeve being disposed annularly and engagingly around said body implant, and adapted to be located within the body wall of the living body when said body implant is in its operative position; and b) a secondary channel within said body implant, extending from said proximal end a distance along said body implant and being positioned to communicate with said flow ports at a point located between said proximal and distal ends of said cuff.
Claim 22
Dependent Claim
207 words
An elongated, cylindrical body implant having an outer surface, a primary channel within said body implant extending substantially the entire length of said body implant, a distal end and a proximal end, which implant is adapted to be positioned in an operative position in a living body wall such that said proximal end is positioned outside the living body and said distal end lies within the living body inwardly of the body wall; said implant including: a) a cuff having proximal and distal ends and comprising an inner base sleeve and an outer, porous, cylindrical pad mounted externally on said inner base sleeve, wherein said inner base sleeve is secured to the outer surface of the body implant, flow ports extending through said inner base sleeve to said body implant; said inner base sleeve being disposed annularly and engagingly around said body implant, and adapted to be located within the body wall of the living body when said body implant is in its operative position; and b) a secondary channel within said body implant, extending from said proximal end a distance along said body implant and being positioned to communicate with said flow ports at a point located between said proximal and distal ends of said cuff.
Claim 23
Dependent Claim
129 words
An elongated, cylindrical body implant as recited in claim 20, additionally including a second cuff having proximal and distal ends and mounted on said outer surface of said body implant and comprising a second inner base sleeve and a second outer porous cylindrical pad mounted on said second inner base sleeve and second flow port means extending through said second inner base sleeve to said body implant and communicating with said secondary channel; said second inner base sleeve being bonded to said body implant at a location spaced axially from said first base sleeve so that said first and second cuffs are positioned to engage inner and outer portions of the interior of the body wall of the living body when said body implant is in its operative position.
Claim 24
Dependent Claim
35 words
A body implant as recited in claim 21, wherein said porous pad is formed of randomly oriented fibrous material compatible with the ingrowth of human tissue when said body implant is in its operative position.
Claim 25
Dependent Claim
42 words
A body implant as recited in claim 21, wherein at least one of said base sleeves includes a plurality of square in cross-section protrusions separated by open flow-permitting spaces with said porous pad being mounted on the outer ends of said protrusions.
Claim 26
Dependent Claim
43 words
A body implant as recited in claim 21, wherein at least one said base sleeve includes a plurality of raised strips between which linear open flow pass are provided with said porous pad being mounted on the upper extent of said raised strips.
References Cited (Backward Citations)
US3394705A
Cited
US3447161A
Cited
US3699956A
Cited
US3981299A
Cited
US4266999A
Cited
US4501580A
Cited
US4584998A
Cited
US4423725A
Cited
US4592920A
Cited
US4623329A
Cited
US4676782A
Cited
US4725264A
Cited
US4772269B1
Cited
US4687471A
Cited
US4772269A
Cited
US4906238A
Cited
USRE34037E
Cited
US4795439A
Cited
US4798585A
Cited
US4753640A
Cited
US4755171A
Cited
US5085646A
Cited
US5098413A
Cited
US5049140A
Cited
US5004455A
Cited
US5085632A
Cited
US5057075A
Cited
US5156597A
Cited
US5146916A
Cited
US5098379A
Cited
US5176638A
Cited
US5108369A
Cited
US5143062A
Cited
US5178611A
Cited
US5236422A
Cited
US5141499A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-05-02 | 1997-11-01 | 1998-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-02 | 2001-11-01 | 2002-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-02 | 2005-11-01 | 2006-05-03 | $7700.00 | Window Closed / Lapsed |