US3623484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telescoping shunt system for physiological fluid
Assignee: Baxter International Inc
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Filing: 1969-07-22
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Granted: 1971-11-30
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Expires: 1989-07-22
Abstract
Abstract This invention relates to an auxiliary device for use with and in physiological shunt circuits for the drainage of unwanted fluids from one part of the body to another. According to this invention a telescopic section is incorporated into a shunt catheter so that when one end of the system is implanted in an area of the body to be drained (such as the ventricles of the brain) and the other end of the system is implanted in a portion of the body into which the fluid must be drained (such as the heart), then, when there is bodily growth which would require elongation of the system, the telescopic portion will elongate and thus prolong the period before the system or some part of it must be replaced to compensate for normal growth. The catheter incorporating the telescopic section is made in two segments having flanged ends which contact the inside of a silicone rubber cylinder and are fluidtight, but can move longitudinally under tensile loads applied as a consequence of the growth of the child. The flanged ends may be radiopaque in order that the elongation may be checked by X-ray. These ends are held against withdrawal.
Inventors
- 👤 Rudolf R Schulte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:51
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/10; A61M27/00; A61M27/002; A61M27/006
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
125 words
A catheter for use in a physiological fluid shunt system, said catheter comprising: a first and a second tubular catheter portion, said tubular catheter portions each having an enlarged cylindrical flange; a pair of tubular retaining sleeves, each of said tubular retaining sleeves having a cylindrical inner wall with a reduced end adapted to overhang and retain against removal a respective one of said flanges and to make a close engagement with the outer wall of the respective catheter portion, said flanges making a sliding fluid-sealing fit with respective inner walls of said retaining sleeves; and an outer sleeve, said outer sleeve being bonded to and joining together and fluidly sealing the retaining sleeves, the retaining sleeves projecting beyond the ends of the outer sleeve.
Claim 2
Dependent Claim
125 words
A catheter for use in a physiological fluid shunt system, said catheter comprising: a first and a second tubular catheter portion, said tubular catheter portions each having an enlarged cylindrical flange; a pair of tubular retaining sleeves, each of said tubular retaining sleeves having a cylindrical inner wall with a reduced end adapted to overhang and retain against removal a respective one of said flanges and to make a close engagement with the outer wall of the respective catheter portion, said flanges making a sliding fluid-sealing fit with respective inner walls of said retaining sleeves; and an outer sleeve, said outer sleeve being bonded to and joining together and fluidly sealing the retaining sleeves, the retaining sleeves projecting beyond the ends of the outer sleeve.
Claim 3
Dependent Claim
31 words
A catheter according to claim 1 in which a groove is provided in the outer wall of one of said retainer sleeves to provide a point of attachment for a suture.
Claim 4
Dependent Claim
39 words
A catheter according to claim 1 in which one of said catheter portions carries protrusions on its surface near its end away from the sleeves, said protrusions being adapted to engage with fibrous body materials to prevent too-easy withdrawal.
Claim 5
Dependent Claim
18 words
A catheter described in claim 1 in which said enlarged shoulders on said tubular catheter segments are radiopaque.
Claim 6
Dependent Claim
22 words
A catheter according to claim 1 in which said tubular catheter, said retaining sleeves, and said sleeves are made of silicone rubber.
Claim 7
Dependent Claim
30 words
A catheter according to claim 3 in which said enlarged shoulders on said tubular catheter are radiopaque, and in which the catheter and said sleeves are made of silicone rubber.
Claim 8
Dependent Claim
166 words
A physiological fluid shunt system which comprises: a collector catheter; pump means draining fluid from said collector catheter; a drainage catheter receiving fluid from said pump means, said drainage catheter having a first portion and a second portion, and a telescopic coupling means connecting said portions for enabling the length of the drainage catheter to increase, said telescopic coupling means comprising: an enlarged cylindrical flange on each of the catheter portions; a pair of tubular retaining sleeves, each of said tubular retaining sleeves having a cylindrical inner wall with a reduced end adapted to overhang and retain against removal a respective one of the said flanges and to make a close engagement with the outer wall of the respective catheter portion, said flanges making a sliding fluid-sealing fit wiTh respective inner walls of said retaining sleeves; and an outer sleeve, said outer sleeve being bonded to and joining together and fluidly sealing the retaining sleeves, the retaining sleeves projecting beyond the ends of the outer sleeve.
Claim 9
Dependent Claim
166 words
A physiological fluid shunt system which comprises: a collector catheter; pump means draining fluid from said collector catheter; a drainage catheter receiving fluid from said pump means, said drainage catheter having a first portion and a second portion, and a telescopic coupling means connecting said portions for enabling the length of the drainage catheter to increase, said telescopic coupling means comprising: an enlarged cylindrical flange on each of the catheter portions; a pair of tubular retaining sleeves, each of said tubular retaining sleeves having a cylindrical inner wall with a reduced end adapted to overhang and retain against removal a respective one of the said flanges and to make a close engagement with the outer wall of the respective catheter portion, said flanges making a sliding fluid-sealing fit wiTh respective inner walls of said retaining sleeves; and an outer sleeve, said outer sleeve being bonded to and joining together and fluidly sealing the retaining sleeves, the retaining sleeves projecting beyond the ends of the outer sleeve.
Claim 10
Dependent Claim
31 words
A system according to claim 7 in which a groove is provided in the outer wall of one of said retainer sleeves to provide a point of attachment for a suture.
Claim 11
Dependent Claim
39 words
A system according to claim 7 in which one of said catheter portions carries protrusions on its surface near its end away from the sleeves, said protrusions being adapted to engage with fibrous body materials to prevent too-easy withdrawal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |