Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
  • A61M39/22—Valves or arrangement of valves
  • A61M39/24—Check- or non-return valves
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
  • A61M39/22—Valves or arrangement of valves
  • A61M39/26—Valves closing automatically on disconnecting the line and opening on reconnection thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
  • A61M39/22—Valves or arrangement of valves
  • A61M39/24—Check- or non-return valves
  • A61M2039/2433—Valve comprising a resilient or deformable element, e.g. flap valve, deformable disc
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
  • A61M39/22—Valves or arrangement of valves
  • A61M39/26—Valves closing automatically on disconnecting the line and opening on reconnection thereof
  • A61M2039/263—Valves closing automatically on disconnecting the line and opening on reconnection thereof where the fluid space within the valve is decreasing upon disconnection
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
  • A61M39/22—Valves or arrangement of valves
  • A61M39/26—Valves closing automatically on disconnecting the line and opening on reconnection thereof
  • A61M2039/267—Valves closing automatically on disconnecting the line and opening on reconnection thereof having a sealing sleeve around a tubular or solid stem portion of the connector

Definitions

• needleless valves include a large interior volume that results in a large amount of residual fluid within the needleless valve after use of the needleless valve.
• the large amount of residual fluid which was intended to be administered to a patient, is not actually administered to the patient.
• some needleless valves include a "straight through” fluid flow channel to reduce the amount of residual fluid within the needleless valve.
• such devices utilize a split-septum valve to control fluid flow in the "straight through” fluid flow channel.
• a split-septum valve can retain medical fluid, such as blood, which is difficult to remove from within the slit-septum. As a result, the retained blood within the split-septum can lead to the promotion of blood-borne diseases.
• FIGs. 1A, 1 B, 1 C, 1 D and 2 depict embodiments of a needleless valve system.
• FIG. 3 illustrates an embodiment of a method for controlling fluid flow in a needleless valve system.
• Figures 1A-D depict; embodiments of needleless valve system 100 (also referenced herein as system 100) in a sealed or closed position.
• Figure 1A depicts an embodiment of an exploded view of system 100
• Figure 1 B depicts an embodiment of a fully assembled system 100
• Figures 1 C-D depicts embodiments of cross-sectional views of system 100.
• System 100 includes base 1 10 (which includes cannula 120), valve 130 and housing 140. It should be appreciated that base 1 10 is joined (e.g., ultrasonic welding, adhesive, etc.) with housing 140 such that there is a fluid seal between base 1 10 and housing 140.
• Valve 130 is configured to seal port 124 of cannula 120, which will be described in detail below. Additionally, valve 130 facilitates in sealing port 144 of housing 140. Valve 130 is comprised of a resiliently compressible material that returns to its natural relaxed state when not subject to compression forces.
• Cannula 120 is configured to allow for the conveying of fluid in system 100 between port 144 and port 1 14. In particular, fluid flows through channel 126 when system 100 is in the unsealed or open position.
• valve 130 seals port 24 of cannula 120.
• Port 124 provides for a fluid channel in the radial direction of cannula 120.
• port 24 is a through-hole along a diameter of cannula 120.
• port 124 is a hole along a radius of cannula 120.
• valve 130 includes protrusion 134 that seats within port 124.
• port 124 has two opposing openings and a protrusion seals each of the openings.
• valve 130 includes shoulder 136. Shoulder 136 is disposed opposite protrusion 134. Shoulder 136 seats against an inner surface of housing 140. Shoulder 136 is configured facilitate in the sealing of port 24 by protrusion 134. More specifically, back pressure within fluid channel 126 induces a pressure onto protrusion 134. However, shoulder 136 acts as a buttress and prevents valve 130 (and protrusion 134) from deforming in a radial direction due to the back pressure.
• port 124 is disposed on a circumference of cannula 20.
• a cannula includes a port on an end portion (e.g. , on a longitudinal axis of the cannula).
• System 100 includes flat surface 150 when system 100 is in the sealed position. Accordingly, flat surface 150 is able to be properly swabbed. Therefore, pathogens are readily removed and flat surface is properly sanitized.
• valve 130 also includes first feature 138 and second feature 139, as depicted in Figure 1 D.
• First feature 138 and second feature 139 are configured to "squeegee" fluid from the outer surface of cannula 120 and from the inner surface of housing 140, respectively, when valve 130 moves from a compressed position to its relaxed and sealed position, as shown.
• fluid such as blood
• housing 140 Accordingly, fluid, such as blood, is expelled from within housing 140.
• Figure 2 depicts an embodiment of system 100 in the open or unsealed position.
• luer 200 of a needleless device such as a needleless syringe, enters port 144 and compresses valve 130 within volume 148 of housing 140.
• luer 200 is cooperative with a female luer fitting that threadably engages with male leur fitting 146.
• Luer 200 compresses in the longitudinal directions of system 100 and subsequently does not cover port 124.
• protrusion 134 resiliently deforms and is forced out of port 124. Accordingly, port 124 is unsealed. Fluid may then travel through system 100 as depicted by fluid flow 210. For example, fluid from an IV bag may flow through system 100 to a patient.
• fluid flow 210 flows around top portion 128 of cannula 120 and into channel 126 via port 124.
• the fluid can flow in the opposite direction.
• a clinician may draw blood from a patient and through system 100 into a needleless syringe.
• blood flows into system 100 at port 1 14 and exits system 100 at port 144.
• valve 130 expands to its original position. More specifically, valve 130 expands such that protrusion 134 seats within port 124 and therefore, seals port 124.
• cannula 120 is coaxial with system 100. As such, fluid flow 210 is through cannula 120. Moreover, the fluid travels exclusively through cannula 20 and does not fill volume 148 or the interior of housing 140. Therefore, there is little residual fluid within system 100.
• fluid substantially fills the interior volume of the housing which results in a substantial amount of volume.
• the interior volume may be 1 cubic centimeters (cc). If 10cc of fluid is intended to be conveyed to a patient via the needleless system, only 9cc of the fluid reaches the patient, while the other 1 cc remains in the needleless valve as residual fluid.
• Figure 3 depicts an embodiment of method 300 for controlling fluid flow in a needleless valve system.
• method 300 is performed at least by needleless valve system 100, as depicted in Figures 1A-2.
• a port of a cannula is sealed by a valve, wherein the port is disposed along a radius of the cannula.
• port 124 is sealed by valve 130.
• Port 124 is disposed at least along a radius of cannula 120.
• the port is sealed by a protrusion disposed in the port.
• port 124 is sealed by protrusion 134 that is at least partially disposed in port 24.
• valve is depressed such that the valve uncovers the port.
• valve 130 is depressed (in the longitudinal direction or co-axially with housing 140), such that port 124 is uncovered.
• valve 30 is depressed within housing 140 by luer 200.
• fluid is allowed to flow through the port and within the cannula. For example, in response to port 124 being uncovered, fluid flows through port 124 and in channel 26.
• valve 130 facilitates in sealing port 144 of housing 140.
• a flat surface is provided at a port of a housing, wherein the cannula and the valve are co-planar at the port of the housing.
• flat surface 150 is provided at port 144.
• tip 122 of cannula and tip 132 of valve 130 are co-planar when system 100 is in the sealed position.
• first feature 138 acts as a squeegee and wipes off an outer surface of cannula 120 when valve 130 moves from a compressed state to a relaxed state.
• second feature 139 also acts as a squeegee and wipes off an inner surface of housing 140 when valve 130 moves from a compressed state to a relaxed state.
• a needleless valve system comprising:
• a cannula comprising a cannula tip
• valve tip wherein said valve is disposed around said cannula
• a housing comprising a housing tip, wherein said cannula tip, said valve tip, and said housing tip comprise a flat surface when said needleless valve system is in a sealed position.
• a port disposed along a radius of said cannula.
• a protrusion configured to seal a port of said cannula.
• ridges disposed along an inner diameter of said valve, wherein said ridges are configured for wiping fluid off of an outer diameter of said cannula.
• a needleless valve system comprising:
• a port disposed along a radius of said cannula; and a valve configured for sealing said port.
• a protrusion configured for sealing said port.
• a method for controlling fluid flow in a needleless valve system comprising:
• sealing said port further comprises:

Landscapes

• Health & Medical Sciences (AREA)
• Heart & Thoracic Surgery (AREA)
• Pulmonology (AREA)
• Engineering & Computer Science (AREA)
• Anesthesiology (AREA)
• Biomedical Technology (AREA)
• Hematology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Infusion, Injection, And Reservoir Apparatuses (AREA)

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Cited By (3)

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Citations (7)

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• 2012
  • 2012-01-27 US US13/360,180 patent/US9114244B2/en active Active
• 2013
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  • 2013-01-22 EP EP13740599.9A patent/EP2817044B1/en active Active
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  • 2013-01-22 CA CA2862465A patent/CA2862465C/en active Active
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  • 2013-01-22 WO PCT/US2013/022587 patent/WO2013112486A1/en not_active Ceased
• 2015
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• 2021
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