Safety Blood-Collection Needle

• US 20170014062A1
• Filed: 06/23/2014
• Published: 01/19/2017
• Est. Priority Date: 04/11/2014
• Status: Active Grant

• Current Assignee: Shanghai Jinta Medical Co., Ltd.
• Original Assignee: Shanghai Jinta Medical Co., Ltd.
• Inventors: MAO, Chunyuan
• Granted Patent: US 9,943,258 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 5/15003 for venous or arterial blood
• CPC Class Codes: A61B 5/150259 Improved gripping, e.g. with high friction pattern or projections on the housing surface or an ergonometric shape
• CPC Class Codes: A61B 5/150389 Hollow piercing elements, e.g. canulas, needles, for piercing the skin
• CPC Class Codes: A61B 5/150519 Details of construction of hub, i.e. element used to attach the single-ended needle to a piercing device or sampling device
• CPC Class Codes: A61B 5/150633 Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves
• CPC Class Codes: A61B 5/150664 Pivotable protective sleeves, i.e. sleeves connected to, or integrated in, the piercing or driving device, and which are pivoted for covering or uncovering the piercing element
• CPC Class Codes: A61B 5/150717 manually removed
• CPC Class Codes: A61B 5/150732 Needle holders, for instance for holding the needle by the hub, used for example with double-ended needle and pre-evacuated tube,
• CPC Class Codes: A61B 5/15074 Needle sets comprising wings, e.g. butterfly type, for ease of handling
• CPC Class Codes: A61B 5/153 Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes

Abstract

A safety blood-collection needle, comprising a needle base, a needle hub, a flexible tube, a straight needle, a straight needle shaft, and a needle head; the safety blood-collection needle further comprises a protective cover, a slider, a handle, and a position limiting mechanism; one end of the needle base is fixed and is in communication with the needle head; the slider movably sleeved on the needle base; the position limiting mechanism is arranged on the slider and needle base. The slider is arranged on the needle base and slides in order to cover the needle head, so that safety is greatly increased when handling the needle head following blood collection; the use of a spring-type needle head is avoided, thus reducing the suffering of the patient.

Claims

1. A safety blood-collection needle, comprising:

a needle seat, a needle guard, a hose, a straight needle, a straight needle handle and a needle head, the needle guard covering the needle head, two ends of the hose communicating with the straight needle and the needle seat respectively, the straight needle handle disposed on a joint of the straight needle and the hose, the straight needle used to be inserted into a vacuum tube, characterized in that, the safety blood-collection needle further comprises a protective shield, a slider, a handle and a retaining mechanism, the needle seat being cylindrical, which is fixed to and communicates with the needle head at one end and connects to the hose at the other end;

the slider is a cylinder having two opened ends and movably covers the needle seat, and the length of the slider in a movable direction is larger than the length of the needle head;

the axial length of the needle seat is larger than the length of the needle head;

the retaining mechanism is disposed on the slider and the needle seat, for securing the slider on the needle seat after the slider slides to a position where the slider completely shelters the needle head;

the handle is fixed to the needle seat, and the handle abuts against the slider;

the inner diameter of the protective shield is larger than the outer diameter of the vacuum tube, the protective shield covering the straight needle and fixed to the straight needle handle by screwing.

2. The safety blood-collection needle according to claim 1, wherein the retaining mechanism includes a first elastic washer and two second elastic washers;

the first elastic washer is adhered to the inner periphery of one end of the hose near the hose, and the edge of the first elastic washer smoothly is adhered to the inner wall of the slider;

the two second elastic washers are engaged with the needle seat by means of covering and are adhered to the needle seat, when the slider slides to a position where it completely shelters the needle head or a position where the needle head is completely exposed, the second elastic washers are engaged with the first elastic washer to limit the movement of the slider.

3. The safety blood-collection needle according to claim 1, wherein the retaining mechanism includes an elastic fastener and two slots;

the two slots are disposed on the needle seat, and the elastic fastener is disposed on the slider, when the slider slides to a position where it completely shelters the needle head or a position where the needle head is completely exposed, the two slots are used to engage with the elastic fastener to limit the movement of the slider.

4. The safety blood-collection needle according to claim 1, wherein the safety blood-collection needle further includes a protective cover;

the protective cover covers and is engaged with and is secured to the needle seat, and the protective cover, together with the needle seat, surround and form a cavity to accommodate the slider;

the handle are integrally formed on the protective cover.

5. The safety blood-collection needle according to claim 4, wherein the protective cover is secured to the outer periphery of one end of the needle seat communicating with the hose by screwing.

6. The safety blood-collection needle according to claim 1, wherein the slider is provided with at least one anti-slip area.

7. The safety blood-collection needle according to claim 3, wherein the slider is made by elastic material, and the slider integrates with the elastic fastener, the needle seat integrates with the slots, and the slider is provided with several hollowed-out areas thereon.