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Locking syringe with integrated bias member

A technology for syringes and biasing parts, which is applied in the direction of syringes, automatic injectors, hypodermic injection devices, etc., and can solve problems such as inability to provide mechanical assistance

Active Publication Date: 2012-10-17
UNITED MEDICAL INNOVATIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Syringes of this type provide little mechanical assistance during the delivery of contrast media through catheters, especially as catheter diameters tend to become smaller

Method used

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  • Locking syringe with integrated bias member
  • Locking syringe with integrated bias member
  • Locking syringe with integrated bias member

Examples

Experimental program
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Embodiment Construction

[0043] As mentioned above, some medical procedures, such as angiography, require the injection of fluids into the patient's body through a catheter or similar device. In some procedures, particularly those that benefit from the use of small diameter catheters, it is difficult to obtain the pressure necessary for fluid delivery by using standard syringes. The locking syringe with integral biasing described below addresses the difficulty of handling liquids through small diameter catheters.

[0044] Use existing locking syringes from a starting position where the syringe is free of fluid (ie contrast medium for angiography). The operator tightens the ring attached to the threaded plunger pusher to draw the contrast medium into the syringe. Using the improved locking syringe disclosed in the present invention, which has a single-handed liquid-loading support, the operator can hold the palm of the hand on the support while the operator's fingers can tighten the double-loop handle...

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PUM

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Abstract

A locking syringe with an integrated bias member, for delivering medical fluids at high pressure, can include a housing, a shaft, a piston, a cap assembly, a bias member, and a locking member. A distal end of the housing can interface with a patient delivery apparatus. The housing includes an internal cavity into which a distal end of the shaft can be inserted. The piston can be connected to the distal end of the shaft and can include a peripheral sealing surface that can slidably engage the inside surface of the housing to form a movable seal. The cap assembly at the proximal end of the housing can engage the shaft. A base cap can secure the piston within the housing. The bias member can have a distal end coupled to the piston and a proximal end restrained, such as to help pressurize the internal cavity. The user- actuatable locking member can user-selectively engage and inhibit unwanted movement of the shaft.

Description

technical field [0001] The present invention relates to a locking syringe with an integral biasing member. Background technique [0002] Syringes are commonly used in many different medical procedures for injecting fluids into patients. Syringes can be attached to needles, catheters, or simply used to handle oral medications in liquid form. During some medical imaging procedures, a syringe can be used to inject a mammography opaque contrast medium (also commonly referred to as a contrast agent) into a patient's vasculature. For example, angiography is a medical imaging technique used to image blood vessels and organs inside the human body. In angiography, a contrast agent is injected into the vascular system through a catheter located close to the area of ​​interest inside the patient's body. A contrast agent is added to the blood and, once administered, is used to image blood vessels on X-ray images taken. [0003] Contrast media is typically injected from a manually op...

Claims

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Application Information

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IPC IPC(8): A61M5/20A61M5/315A61M5/178
CPCA61M5/3129A61B6/481A61M2005/3139A61M5/31511A61M5/007A61M5/20A61M5/31501A61M5/3148A61M5/31505A61M2005/31508A61B6/504
Inventor 柳云星李春
Owner UNITED MEDICAL INNOVATIONS
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