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Hand-actuated syringe with vacuum chamber for auto refill

A syringe and vacuum chamber technology, which is used in the field of filling manually-actuated syringes, which can solve problems such as waste of time and materials

Active Publication Date: 2012-01-04
LIEBEL FLARSHEIM CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In each case it can be said that time and material (e.g. many syringes) are wasted

Method used

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  • Hand-actuated syringe with vacuum chamber for auto refill
  • Hand-actuated syringe with vacuum chamber for auto refill
  • Hand-actuated syringe with vacuum chamber for auto refill

Examples

Experimental program
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Embodiment Construction

[0033] An example of a fluid delivery system is shown in figure 1 , and is indicated by reference numeral 10 . Fluid delivery system 10 includes syringe 14 and fluid source 86 . Generally, fluid delivery system 10 is configured to automatically refill syringe 14 with fluid from fluid source 86 . The term "refill" encompasses providing any suitable space for the syringe 14, and specifically does not require fluid from the fluid source 86 to occupy the entire fluid-containing volume of the syringe 14 as a result of the refill operation.

[0034] The syringe 14 includes a syringe body 18 and a plunger or pushrod assembly 54 that extends within the syringe body 18 and is slidable relative to the body. Syringe body 18 may be of any suitable size, shape, configuration and / or type. Syringe body 18 may be formed from any suitable material or combination of materials. In one embodiment, the syringe body 18 is an integrally formed structure (eg, a one-piece construction so that ther...

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PUM

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Abstract

A hand-activated syringe (14) is disclosed that uses a vacuum to retract a plunger (54) of the syringe (14) to draw fluid into a syringe body (18). A first seal (76) with the plunger (54) and a second seal (64) with the plunger (54) define a vacuum chamber (82). The spacing between the first seal (76) and the second seal (64) changes in response to the plunger (54) moving relative to the syringe body (18). Advancing the plunger (54) in a direction associated with a discharge stroke creates or increases a vacuum within the vacuum chamber (82) by increasing a spacing between the first seal (76) and the second seal (64). This vacuum thereafter may be used to retract the plunger (54) by decreasing a spacing between the first seal (76) and the second seal (64), and to thereby draw fluid into the syringe (14) from a fluid source (86).

Description

[0001] related application [0002] This application claims priority to US Provisional Application No. 61 / 149,718, filed February 4, 2009, entitled "HAND-ACTUATED SYRINGE WITH VACUUM CHAMBER FOR AUTO REFILL." technical field [0003] The present invention generally relates to filling hand-actuated syringes. Background technique [0004] Hand-held, hand-operated (eg, hand-actuated) syringes may be used in cardiac catheterization laboratory procedures and special angiographic procedures. For example, for a given procedure, the syringe needs to be filled one or more times with a medical fluid, such as a contrast agent for a medical imaging procedure. In this regard, the first syringe is typically interconnected with the vial by using a combination of a syringe needle and the pierceable membrane / septum of the vial or by using a combination of a syringe luer fit and a piercing needle associated with the vial. Once interconnected with the vial, the user or physician (usually a n...

Claims

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Application Information

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IPC IPC(8): A61M5/20
CPCA61M2005/3115A61M5/007A61M5/204A61J1/10A61M5/1782A61M39/24
Inventor K.R.马茨
Owner LIEBEL FLARSHEIM CO
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