Syringe for sequential expression of different liquids

• US 8,771,234 B2
• Filed: 07/06/2011
• Issued: 07/08/2014
• Est. Priority Date: 11/13/2006
• Status: Active Grant

• Current Assignee: Medical Components, Inc.
• Original Assignee: Medical Components, Inc.
• Inventors: Nalesso, Federico, Fisher, Mark S., Wall, William Shaun
• Primary Examiner(s): Sirmons, Kevin C
• Assistant Examiner(s): CARPENTER, WILLIAM R
• Application Number:
  US13/177,169
• Publication Number:
  US 20120016313A1
• Time in Patent Office: 1,098 Days
• Field of Search: 604/82, 604 86- 89, 604/187, 604/191, 604/201, 604/203, 604/205, 604/241, 604/244, 604/416, 604/167.03
• US Class Current: 604/191
• CPC Class Codes: A61M 2005/1787 Syringes for sequential delivery of fluids, e.g. first medicament and then flushing liquid
• CPC Class Codes: A61M 2005/3123 having air entrapping or venting means, e.g. purging channels in pistons
• CPC Class Codes: A61M 2039/1077 Adapters, e.g. couplings adapting a connector to one or several other connectors
• CPC Class Codes: A61M 2205/195 by the needle tip shape
• CPC Class Codes: A61M 39/20 Closure caps or plugs for connectors or open ends of tubes
• CPC Class Codes: A61M 39/221 Frangible or pierceable closures within tubing A61M39/14 takes precedence; frangible closures for containers A61J1/14
• CPC Class Codes: A61M 5/19 having more than one chamber , e.g. including a manifold coupling two parallelly aligned syringes through separate channels to a common discharge assembly surgical glue applicators A61B17/00491
• CPC Class Codes: A61M 5/284 comprising means for injection of two or more media, e.g. by mixing
• CPC Class Codes: A61M 5/286 upon internal pressure increase, e.g. pierced or burst A61M5/283 takes precedence
• CPC Class Codes: A61M 5/31501 Means for blocking or restricting the movement of the rod or piston A61M5/5013 takes precedence
• CPC Class Codes: A61M 5/31551 including axial movement of dose setting member
• CPC Class Codes: A61M 5/3158 performed by axially moving actuator operated by user, e.g. an injection button
• CPC Class Codes: A61M 5/31591 Single dose, i.e. individually set dose administered only once from the same medicament reservoir, e.g. including single stroke limiting means
• CPC Class Codes: A61M 5/31596 comprising means for injection of two or more media, e.g. by mixing

Abstract

A device (10,110,210) for the expression of liquids, such as for the maintenance treatment of vascular catheters. A syringe (16;116a,116b;216) has a support structure (15,215) and includes at least two separate compartments (11,12;111,112;211,212) in which liquids for treating the lumen (L,283) of a catheter (C,280) with which the device is associated. The syringe further includes a closure plug (13,213) to be associated with the lumen being treated, which is coupled, by virtue of a releasable securement arrangement, to support structure (15,215). At least one plunger (16;116a,116b;216) is also included for infusing, in preset order, the different treatment liquids into the lumen to be treated, and the syringe further includes a duct (17,217) which is in fluid communication with the two compartments and is arranged through a through hole through the closure plug (13,213) in order to allow access of the treatment liquid to the interior of the lumen (L,283) upon activation of the plunger.

Claims

1. An arrangement for expression of liquid into an opening of a liquid-receiving device by a practitioner, comprising:

a support structure including at least one compartment for containing a liquid therein and further defining a plug-receiving cavity at the distal end thereof, and further including a distal body section which defines the plug-receiving cavity distally of a distal wall, the distal wall traversing the distal end of an empty compartment distally of the at least one liquid-containing compartment, and the arrangement further including a duct extending through the distal body section within which is affixed a needle that extends from the distal end of the at least one liquid-containing compartment through the empty compartment and through the duct into the plug-receiving cavity through which liquid is to be expressed, wherein the distal body section includes at least one aperture through a side wall thereof;

a plunger activatable with respect to the at least one compartment for expression of the liquid from the compartment and into the liquid-receiving device; and

a closure plug containing a transverse sealing membrane and having an exposed liquid receiving device connection section, wherein the closure plug is removably attached within the plug-receiving cavity via a non-threaded, releasable securement arrangement within the plug-receiving cavity and independent of the resealable membrane,

wherein upon insertion of the closure plug into the plug-receiving cavity, the distal needle tip projects distally of the transverse sealing membrane of the closure plug, and wherein the distal body section of the support structure includes a cap collar affixed thereto at its distal end, the cap collar and distal body section adjacent thereto defining a ring seat wherein a plug-gripping ring is contained that includes an array of gripping sections extending radially inwardly a short distance to be engaged by side surfaces of the closure plug, comprising the securement arrangement, to establish a friction fit therewith when the closure plug is urged into the plug-receiving cavity.

2. The arrangement of claim 1, wherein the support structure is adapted to be manually held and the plunger is adapted to be manually activated.

3. The arrangement of claim 1, wherein the securement arrangement is defined between the distal end of the distal body section and the closure plug.

4. The arrangement of claim 1, wherein the closure plug includes a practitioner-grippable annular ring surrounding its distal end for facilitating removal of the closure plug from the support structure.

5. The arrangement of claim 1, wherein the closure plug includes a larger diameter proximal section having a first diameter and an outer flange extending distally therefrom having a second diameter less than the first diameter, and the gripping sections engage the closure plug outer flange upon urging of the closure plug into the plug-receiving cavity, such that the gripping sections must be deflected against spring bias for the larger diameter proximal section of the closure plug to be removed from the support structure distal end, for enhanced securement of the closure plug within the plug-receiving cavity.

6. The arrangement of claim 5, wherein the outer flange of the closure plug is dimensioned and configured to be coupled to the liquid-receiving device, and the closure plug further includes an inner flange extending distally therefrom surrounding the distal needle tip and sized to enter an opening into the liquid-receiving device.