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Needle tip spring protector

A technology for needles and protection equipment, applied in the field of medical needles, can solve the problems of complex needle tip protectors, and achieve the effect of overcoming deficiencies and defects, and a simple and low-cost method

Inactive Publication Date: 2014-07-02
SMITHS MEDICAL ASD INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So the disadvantage of this needle tip protector is that it is too complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] Referring to FIGS. 1-2A , there is shown an embodiment of a needle tip spring protector 10 according to the present invention, which includes an elastic member 12 surrounding a needle 14 . As shown in the embodiment, the elastic component 12 is a spring 16 . Thus, the needle tip spring protector 10 may comprise a simple spring 16 surrounding a needle 14, such as a hypodermic needle. However, the needle 14 may be any type of medical needle. Accordingly, those skilled in the art will recognize that the needle tip spring protectors described herein can be used with conventional needle and cannula assemblies.

[0049] In FIG. 1, the tip 18 of the needle 14 is exposed so that the needle 14 can be used to penetrate the body of a patient. In the description herein, the labeling criterion is that the tip 18 is located at the distal end 20 of the needle 14 . Therefore, when describing other components, their respective distal ends are the ends away from the medical staff (but...

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PUM

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Abstract

A needle tip spring protector for a needle (14) has a proximal end, a distal end (20), and a shaft (22) extending therebetween. The needle tip spring protector comprises a spring (16) which circumferentially surrounds the needle shaft (22) portion and is restrained in a condition in which its internal diameter (30) is large enough to allow the shaft (22) ) move freely within said spring (16). When the needle (14) is moved so that its distal end (20) is at least partially within the spring (16), at least one end of the spring (16) is released from the restraint such that the spring (16) Automatically returns to a state in which the inner diameter (30) is sufficiently sized to clamp and engage the shaft (22) of the needle (14). In this way, the spring (16) securely surrounds the distal end (20) of the needle (14) after activation to prevent accidental access to the distal end (20) of the needle (14) by medical personnel or others. When used with catheter assembly (100), the needle tip spring protector can be passively disengaged from the catheter hub (114) after the spring (16) is automatically activated.

Description

Technical field: [0001] This invention relates to medical needles, such as injection needles, catheterization needles or cannulae, or other pointed hollow or solid cannulae, and more particularly to devices for protecting the tip of said needle when withdrawn from a patient. Background technique: [0002] A variety of needle tip protectors (ie, enclosing or covering sharp needle tips) have been developed to reduce or eliminate accidental needle stick injuries. Some needle tip protectors include mechanisms with different cooperating parts. Such needle tip protectors are often unreliable and difficult to manufacture. Other needle tip protectors require medical personnel to activate via a trigger mechanism or other activator. Therefore, unlike passive activation, these devices require additional steps before providing protection. Still other needle tip protectors require longer than conventional needles for use in unprotected conditions based on respective standards, in part...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/178A61M5/31A61M25/00
CPCA61M25/0618A61M5/3273A61M25/0606A61M25/0612A61M2005/3247
Inventor 詹姆斯·M·穆斯卡特罗小托马斯·F·利雷
Owner SMITHS MEDICAL ASD INC