Patent US3785683A successfully refreshed from Google Patents.
US3785683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connecting device for a catheter
Assignee: Siemens AG
•
Filing: 1972-01-26
•
Granted: 1974-01-15
•
Expires: 1992-01-26
Abstract
Abstract A device for connecting a catheter with a container for contrast medium which is subjected to pressure is characterized by coupling means which are liquid-tightly connected with each other, at least one of these means being mounted so as to be rotated relatively to the other means about the flow axis. These means can be removably connected by connecting elements with the container for the contrast medium on the one hand and with the catheter on the other hand.
Inventors
- 👤 T Adelhed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:36
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/48; A61B6/481; A61B6/50; A61B6/504; A61M; A61M39/00; A61M39/10; A61M39/1055
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
231 words
A device for connecting a catheter with a container for a contrast medium, said container being subjected to pressure, said device comprising coupling means having a cylinder, a connecting element removably connecting said cylinder with said container and having a channel for the flow of the contrast medium, another connecting element removably connecting said cylinder with said catheter and having a channel for the flow of the contrast medium, covers closing both ends of the cylinder and having openings for said channels, a first piston liquid tightly mounted in said cylinder and directed to the first-mentioned connecting element, said piston having a transverse axial passage coaxial with said cylinder and communicating with the first-mentioned channel, a second piston liquid tightly mounted in said cylinder and directed to the second-mentioned connecting element, said second piston having a transverse axial bore, a third piston located between the first and second pistons and liquid tightly mounted in said cylinder, said third piston being spaced from said first piston, a shaft firmly connected with said third piston and extending through the bore of said second piston and to the second-mentioned connecting element, said third piston and said shaft having a continuous transverse axial passage constituting a continuation of the first-mentioned axial passage, and ball bearings between the second and third pistons, whereby the third piston and its shaft are rotatable relatively to the first piston.
Claim 2
Independent Claim
231 words
A device for connecting a catheter with a container for a contrast medium, said container being subjected to pressure, said device comprising coupling means having a cylinder, a connecting element removably connecting said cylinder with said container and having a channel for the flow of the contrast medium, another connecting element removably connecting said cylinder with said catheter and having a channel for the flow of the contrast medium, covers closing both ends of the cylinder and having openings for said channels, a first piston liquid tightly mounted in said cylinder and directed to the first-mentioned connecting element, said piston having a transverse axial passage coaxial with said cylinder and communicating with the first-mentioned channel, a second piston liquid tightly mounted in said cylinder and directed to the second-mentioned connecting element, said second piston having a transverse axial bore, a third piston located between the first and second pistons and liquid tightly mounted in said cylinder, said third piston being spaced from said first piston, a shaft firmly connected with said third piston and extending through the bore of said second piston and to the second-mentioned connecting element, said third piston and said shaft having a continuous transverse axial passage constituting a continuation of the first-mentioned axial passage, and ball bearings between the second and third pistons, whereby the third piston and its shaft are rotatable relatively to the first piston.
References Cited (Backward Citations)
US980776A
Cited
US929734A
Cited
US1911423A
Cited
FR844720A
Cited
US2379035A
Cited
US2893395A
Cited
US3167330A
Cited
US3058761A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |