Intravenous fluid delivery device

• US 5,364,371 A
• Filed: 12/17/1992
• Issued: 11/15/1994
• Est. Priority Date: 03/04/1986
• Status: Expired due to Term

• Current Assignee: Deka Products Limited Partnership
• Original Assignee: Deka Products Limited Partnership
• Inventors: Kamen, Dean L.
• Primary Examiner(s): Rosenbaum, C. Fred
• Assistant Examiner(s): SMITH, CHALIN A
• Application Number:
  US07/993,719
• Time in Patent Office: 698 Days
• Field of Search: 604/82, 604/246-251, 604/257, 604/262, 604/403, 604/408, 251/208, 251/212, 251/233
• US Class Current: 604/251
• CPC Class Codes: A61M 2005/1403 Flushing or purging
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 2205/15 Detection of leaks
• CPC Class Codes: A61M 39/22 Valves or arrangement of valves A61M39/02, A61M39/0247, A61M39/16 take precedence; regulating valves in infusion systems A61M5/16881; in devices worn by the patient for the reception of urine, faeces, catamenial or other discharge, or in colostomy devices A61F5/4405
• CPC Class Codes: A61M 39/24 Check- or non-return valves
• CPC Class Codes: A61M 39/26 Valves closing automatically on disconnecting the line and opening on reconnection thereof check valves A61M39/24
• CPC Class Codes: A61M 39/28 Clamping means for squeezing flexible tubes, e.g. roller clamps tube strippers A61M1/83
• CPC Class Codes: A61M 5/162 Needle sets, i.e. connections by puncture between reservoir and tube ; Connections between reservoir and tube in jet-action syringes A61M5/30; connectors for tubes having sealed ends and a needle for piercing them A61M39/14
• CPC Class Codes: A61M 5/16809 by repeated filling and emptying of an intermediate volume pressure infusion using positive displacement pumps A61M5/142
• CPC Class Codes: A61M 5/16813 by controlling the degree of opening of the flow line
• CPC Class Codes: A61M 5/16859 Evaluation of pressure response, e.g. to an applied pulse
• CPC Class Codes: A61M 5/36 with means for eliminating or preventing injection or infusion of air into body dialysis systems, blood oxygenators A61M1/14; haemofiltration equipment A61M1/34; automatic tube cut-off A61M39/281
• CPC Class Codes: A61M 5/365 Air detectors A61M5/1684 takes precedence; in extracorporeal blood circuits A61M1/3626
• CPC Class Codes: F04B 43/043 Micropumps
• CPC Class Codes: F16K 31/005 Piezoelectric benders
• CPC Class Codes: G01F 1/34 by measuring pressure or differential pressure
• CPC Class Codes: G01F 17/00 Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies measuring linear dimensions to determine volume G01B
• CPC Class Codes: G01P 13/0066 by using differences of pressure in the fluid
• CPC Class Codes: Y10S 128/13 Infusion monitoring

Abstract

A compact, integrated intravenous fluid delivery device. In one embodiment, the invention may be used with first and second intravenous fluid sources and an intravenous fluid line. This embodiment includes a spike for connecting the device to the first intravenous fluid source. A fluid passageway passes through the spike. A connection site (e.g. a puncture site) connects the device to the second intravenous fluid source. This embodiment also includes a drip chamber, through which the fluid may flow to the intravenous fluid line. This embodiment may include an adjustable valve, which includes a flexible tube mounted so that fluid may pass from the fluid passageway in the spike, from the connection site, and through the tube. The valve includes an actuator mounted with respect to the tube so that it may be urged to compress the tube. The spike, the adjustable valve, and the drip chamber are rigidly attached to each other, with no flexible tubing between the various components. This embodiment may further include a one-way valve mounted below the spike and above the connection site, so that intravenous fluid may flow from the fluid passageway through the one-way valve, and so that fluid from the second fluid source may flow to the intravenous fluid line, but may not flow through the fluid passageway in the spike.

Claims

1. An intravenous fluid delivery device for connecting a patient to first and second intravenous fluid sources, the device comprising:

a spike for connecting the device to the first intravenous fluid source, wherein the spike defines a portion of a fluid passageway passing from the first fluid source to the patient;

a connection site for providing fluid communication between the second intravenous fluid source and the fluid passageway, the connection site being rigidly attached to the spike so as to maintain the connection site and the spike in fixed relation to each other;

a drip chamber rigidly attached to the spike and the connection site and defining another portion of the fluid passageway;

an intravenous fluid line defining another portion of the fluid passageway, the intravenous fluid line being mounted on the drip chamber, such that the fluid may flow from the drip chamber into the intravenous fluid line to the patient; and

a one-way valve mounted in the fluid passageway between the spike and the connection site, so that intravenous fluid may flow from the first fluid source through the spike, the one-way valve and the drip chamber to the intravenous fluid line, and so that fluid from the second fluid source may flow through the connection site and the drip chamber to the intravenous fluid line, but is prevented from flowing through the spike, the one-way valve being rigidly mounted so as to maintain the one-way valve in fixed relation to the connection site and the spike.

6. An intravenous fluid delivery device according to claim 1, further including

a filter mounted in the fluid passageway between the spike and the drip chamber, the filter being rigidly mounted so as to maintain the filter in fixed relation to the connection site and the spike.

2. An intravenous fluid delivery device for connecting a patient to first and second intravenous fluid sources, the device comprising:

a spike for connecting the device to the first intravenous fluid source, wherein the spike defines a portion of a fluid passageway passing from the first fluid source to the patient;

a connection site for providing fluid communication between the second intravenous fluid source and the fluid passageway, the connection site being rigidly attached to the spike so as to maintain the connection site and the spike in fixed relation to each other;

an adjustable valve including

a flexible tube partially defining another portion of the fluid passageway, the tube being mounted so that fluid may pass from the spike, and from the connection site, and through the tube,

a rigid threaded seat disposed about the tube, the rigid threaded seat being rigidly attached to the spike and the connection site so as to maintain the connection site, the spike and the rigid threaded seat in fixed relation to each other,

a levered arm mounted on the threaded seat so that the arm may be urged to compress the tube, so as to restrict flow through the tube, and

a threaded nut engagedly and concentrically mounted on and about the seat, so that as the nut is turned it may urge the levered arm to compress the tube;

a drip chamber rigidly attached to the spike, the connection site and the adjustable valve'"'"'s rigid threaded seat, the drip chamber defining another portion of the fluid passageway, so that fluid may flow from the first fluid source through the spike and the adjustable valve'"'"'s tube to the drip chamber, and so that fluid may flow from the second fluid source through the connection site and the adjustable valve'"'"'s tube to the drip chamber; and

an intravenous fluid line defining another portion of the fluid passageway, the intravenous line being mounted on the drip chamber, such that the fluid may flow from the drip chamber into the intravenous fluid line to the patient.

3. An intravenous fluid delivery device according to claim 2, wherein the tube is made of silicone.

4. An intravenous fluid delivery device according to claim 2, further including

a one-way valve mounted in the fluid passageway below the spike and above the connection site, so that intravenous fluid may flow from the first fluid source through the spike and the one-way valve to the adjustable valve'"'"'s flexible tube, and so that fluid from the second fluid source may flow through the connection site through the drip chamber to the intravenous fluid line, but is prevented from flowing through the spike.

5. An intravenous fluid delivery device for connecting a patient to an intravenous fluid source, the device comprising:

a spike for connecting the device to the intravenous fluid source, wherein the spike partially defines a portion of a fluid passageway passing from the fluid source to the patient;

an adjustable valve including

a flexible tube partially defining another portion of the fluid passageway, the tube being mounted so that fluid may pass from the spike and through the tube,

a rigid threaded seat disposed about the tube, the rigid threaded seat being rigidly attached to the spike so as to maintain the spike and the rigid threaded seat in fixed relation to each other,

a levered arm mounted on the threaded seat so that the arm may be urged to compress the tube, so as to restrict flow through the tube, and

a threaded nut engagedly and concentrically mounted on and about the seat, so that as the nut is turned it may urge the levered arm to compress the tube;

a drip chamber rigidly attached to the spike and the adjustable valve'"'"'s rigid threaded seat, the drip chamber defining a portion of the fluid passageway, so that fluid may flow from the fluid source through the spike and the adjustable valve'"'"'s tube to the drip chamber; and

an intravenous fluid line defining another portion of the fluid passageway, the intravenous fluid line being mounted on the drip chamber, such that fluid may flow from the drip chamber into the intravenous fluid line to the patient.