Patent US4908018A successfully refreshed from Google Patents.
US4908018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for injecting fluids into an IV line
Assignee: Individual
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Filing: 1988-09-29
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Granted: 1990-03-13
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Expires: 2008-09-29
Abstract
Abstract Apparatus including a manifold and improved check valves for selectively injecting supplemental fluids into a closed IV line extending from a source of saline solution to a patient during an operation. Also disclosed are a plurality of connected manifolds and a device to secure the apparatus in location for easy administration of the supplemental fluids to the IV line.
Inventors
- 👤 John Thomsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:52
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/1407; A61M5/1408; A61M39/00; A61M39/22; A61M39/24; A61M2039/242; A61M2039/2433; A61M2039/2446; A61M2039/2453; Y; Y10; Y10S; Y10S137/00; Y10S137/903
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
296 words
An assembly for use in creating a flow of solution through tubing to establish an IV line from a supply of solution to a patient during an operation and for allowing the selective injecting of supplemental fluid under pressure into the flow of solution, the assembly comprising: a manifold including a connector having a first end and a second end couplable with a length of tubing intermediate its length and having a cylindrical bore extending therethrough, the manifold also including riser means extending radially from the connector with each riser means having a bore extending therethrough in fluid communication with the bore of the connector; and a check valve operatively associated with the riser means with each check valve including a body positioned adjacent to the radially exterior end of the riser means and having a cylindrical bore extending therethrough in fluid communication with the bore of its associated riser means and the connector, each body being formed for the support of a syringe in order to facilitate the flow of supplemental fluid under pressure, each check valve also including a poppet positioned between its associated body and riser means to seal the bore of the body for precluding the flow of supplemental fluids therethrough and, upon the application of the pressure of supplemental fluid from a syringe, to resiliently displace the poppet, to unseal the bore of the body and to thereby allow the flow of supplemental fluid from the syringe to the solution flowing through the connector and to the patient, each poppet having an upper imperforate cap and lower depending legs, the legs being formed as a discontinuous cylinder for buckling under the application of pressure from fluid to be passed therethrough, the legs including slots and apertures with axial and radial portions
Claim 2
Dependent Claim
296 words
An assembly for use in creating a flow of solution through tubing to establish an IV line from a supply of solution to a patient during an operation and for allowing the selective injecting of supplemental fluid under pressure into the flow of solution, the assembly comprising: a manifold including a connector having a first end and a second end couplable with a length of tubing intermediate its length and having a cylindrical bore extending therethrough, the manifold also including riser means extending radially from the connector with each riser means having a bore extending therethrough in fluid communication with the bore of the connector; and a check valve operatively associated with the riser means with each check valve including a body positioned adjacent to the radially exterior end of the riser means and having a cylindrical bore extending therethrough in fluid communication with the bore of its associated riser means and the connector, each body being formed for the support of a syringe in order to facilitate the flow of supplemental fluid under pressure, each check valve also including a poppet positioned between its associated body and riser means to seal the bore of the body for precluding the flow of supplemental fluids therethrough and, upon the application of the pressure of supplemental fluid from a syringe, to resiliently displace the poppet, to unseal the bore of the body and to thereby allow the flow of supplemental fluid from the syringe to the solution flowing through the connector and to the patient, each poppet having an upper imperforate cap and lower depending legs, the legs being formed as a discontinuous cylinder for buckling under the application of pressure from fluid to be passed therethrough, the legs including slots and apertures with axial and radial portions
Claim 3
Dependent Claim
282 words
An assembly for use in creating a flow of solution through tubing to establish an IV line from a supply of solution to a patient and for allowing the selective injecting of supplemental fluid under pressure into the flow of solution, the assembly comprising: a manifold including a connector having a first end and a second end and having a bore extending therethrough, the manifold also including a riser extending radially from the connector with a bore extending therethrough in fluid communication with the bore of the connector; and a check valve operatively associated with the riser with the check valve including a body positioned adjacent to the radially exterior end of the riser and having a cylindrical bore extending therethrough in fluid communication with the bores of the riser and the connector, the body being formed for the support of a syringe in order to facilitate the flow of supplemental fluid under pressure, the check valve also including a poppet positioned between the body and the riser to seal the bore of the body for precluding the flow of supplemental fluids therethrough and, upon the application of the pressure of supplemental fluid from a syringe, to resiliently displace the poppet, to unseal the bore of the body and to thereby allow the flow of supplemental fluid from the syringe to the solution flowing through the connector and to the patient, the poppet having an upper imperforate cap and lower depending legs, the legs being formed as a discontinuous cylinder for buckling under the application of pressure from fluid to be passed therethrough, the legs including apertures extending axially along the majority of their lengths and then radially adjacent to the cap.
Claim 4
Dependent Claim
282 words
An assembly for use in creating a flow of solution through tubing to establish an IV line from a supply of solution to a patient and for allowing the selective injecting of supplemental fluid under pressure into the flow of solution, the assembly comprising: a manifold including a connector having a first end and a second end and having a bore extending therethrough, the manifold also including a riser extending radially from the connector with a bore extending therethrough in fluid communication with the bore of the connector; and a check valve operatively associated with the riser with the check valve including a body positioned adjacent to the radially exterior end of the riser and having a cylindrical bore extending therethrough in fluid communication with the bores of the riser and the connector, the body being formed for the support of a syringe in order to facilitate the flow of supplemental fluid under pressure, the check valve also including a poppet positioned between the body and the riser to seal the bore of the body for precluding the flow of supplemental fluids therethrough and, upon the application of the pressure of supplemental fluid from a syringe, to resiliently displace the poppet, to unseal the bore of the body and to thereby allow the flow of supplemental fluid from the syringe to the solution flowing through the connector and to the patient, the poppet having an upper imperforate cap and lower depending legs, the legs being formed as a discontinuous cylinder for buckling under the application of pressure from fluid to be passed therethrough, the legs including apertures extending axially along the majority of their lengths and then radially adjacent to the cap.
Claim 5
Dependent Claim
20 words
The assembly as set forth in claim 2 and further including axial slots formed in the legs between the apertures.
Claim 6
Dependent Claim
38 words
The assembly as set forth in claim 3 wherein the riser has a surface for receiving the legs, the riser including retaining lips with their radially exterior surfaces adapted to receive the radial interior surfaces of the legs.
Claim 7
Dependent Claim
42 words
The assembly as set forth in claim 4 wherein the upper edges of the retaining lips are chamfered in a first direction and the lower edges of the legs are chamfered in a mating direction to facilitate the mating thereof during assembly.
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) | 1993-03-12 | 1993-09-11 | 1994-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-12 | 1997-09-11 | 1998-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-12 | 2001-09-11 | 2002-03-13 | $7700.00 | Window Closed / Lapsed |