WO2016062016A1 - 一次性使用防针刺静脉输液穿刺针 - Google Patents

一次性使用防针刺静脉输液穿刺针 Download PDF

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Publication number
WO2016062016A1
WO2016062016A1 PCT/CN2015/075658 CN2015075658W WO2016062016A1 WO 2016062016 A1 WO2016062016 A1 WO 2016062016A1 CN 2015075658 W CN2015075658 W CN 2015075658W WO 2016062016 A1 WO2016062016 A1 WO 2016062016A1
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WO
WIPO (PCT)
Prior art keywords
needle
slider
sliding member
elastic
intravenous infusion
Prior art date
Application number
PCT/CN2015/075658
Other languages
English (en)
French (fr)
Inventor
毛亚凌
Original Assignee
上海金塔医用器材有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201410577644.7A external-priority patent/CN104288866B/zh
Priority claimed from CN201420621938.0U external-priority patent/CN204181959U/zh
Priority to US15/312,581 priority Critical patent/US10188803B2/en
Priority to CA2943156A priority patent/CA2943156C/en
Priority to SG11201607162QA priority patent/SG11201607162QA/en
Priority to MX2016012572A priority patent/MX2016012572A/es
Priority to BR112016021855-8A priority patent/BR112016021855B1/pt
Priority to AU2015336700A priority patent/AU2015336700B2/en
Application filed by 上海金塔医用器材有限公司 filed Critical 上海金塔医用器材有限公司
Priority to JP2016562951A priority patent/JP6286063B2/ja
Priority to KR1020167022824A priority patent/KR101893804B1/ko
Priority to EP15851761.5A priority patent/EP3093034B1/en
Priority to EA201691849A priority patent/EA032213B1/ru
Priority to ES15851761T priority patent/ES2777309T3/es
Publication of WO2016062016A1 publication Critical patent/WO2016062016A1/zh
Priority to PH12016501857A priority patent/PH12016501857A1/en
Priority to SA516380089A priority patent/SA516380089B1/ar

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3202—Devices for protection of the needle before use, e.g. caps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0612—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
    • A61M25/0631—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3213—Caps placed axially onto the needle, e.g. equipped with finger protection guards
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3271—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel with guiding tracks for controlled sliding of needle protective sleeve from needle exposing to needle covering position
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M5/344—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub using additional parts, e.g. clamping rings or collets
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/27—General characteristics of the apparatus preventing use
    • A61M2205/273—General characteristics of the apparatus preventing use preventing reuse, e.g. of disposables
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0612—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
    • A61M25/0637—Butterfly or winged devices, e.g. for facilitating handling or for attachment to the skin

Definitions

  • the invention relates to a venous needle, in particular to a single-use anti-acupuncture intravenous infusion needle.
  • a single-use anti-acupuncture intravenous infusion needle comprising a needle seat, a needle sleeve, a hose and a needle, the needle sleeve being sleeved on the needle, the hose and the needle seat
  • the disposable anti-needle intravenous infusion needle further comprises a plurality of sliding members and a plurality of limiting mechanisms, the needle holder is cylindrical, and one end of the needle holder is fixed and communicates with the needle The other end is connected to the hose;
  • the limiting mechanism is disposed on the plurality of sliders and the needle seat, and is configured to fix the slider of the innermost layer to the needle after the sliding members are slidably deployed to completely shield the needle And the plurality of sliders are fixed to each other.
  • the needle holder is The length design is the key to determining the length of the venous needle operating site.
  • the plurality of sliders are used to laminate the phase sleeves, in the retracted state (ie, when the needle is completely exposed), the plurality of slider layer sleeve structures can significantly reduce the needles compared to using only one slider. The design length of the seat.
  • the limiting mechanism comprises a first elastic washer, two second elastic washers and two third elastic washers;
  • the first elastic gasket is attached to an inner circumference of one end of the first sliding member near the hose, and the edge of the first elastic gasket is smoothly fitted to the inner wall of the first sliding member ;
  • the third elastic washers are respectively disposed on an outer circumference of one end of the first sliding member away from the hose and the second sliding member is adjacent to an inner circumference of the hose, and the third elastic washer is used in the The first slider and the second slider slide to extend to completely shield the needle or the needle is fully exposed to engage with each other to limit movement of the second slider.
  • the first sliding member is further provided with an elastic card member for popping up when the first sliding member and the second sliding member slide to completely shield the needle to prevent The second slider is reversed in the direction of the hose.
  • the sliding member and the needle seat are slidingly stacked, there is a gap between the sliding members and between the sliding member and the needle holder. These gaps tend to pinch the patient's skin during operation, causing pain to the patient.
  • the protrusion will interfere with the patient's skin during operation, so that the skin is slightly sunken, so that the skin around the contact portion of the protrusion can avoid the first slider with the gap, the second slide The joint of the piece and the hub is in contact so that the skin is not easily caught by the slit.
  • the distance between the notch and the axis of the needle is a set distance.
  • the disposable anti-needle intravenous infusion needle further comprises a handle, and the second sliding member is provided with at least one anti-slip area;
  • the sliding member is made of an elastic material, the sliding member is integrally formed with the elastic fastener, and the needle seat is integrally formed with the card slot;
  • the blocking portion can further prevent the sliding member and the needle seat from directly coming out
  • the blocking portion can be any blocking structure, for example, the needle seat and the first sliding member are provided with an annular retaining ring on the outer wall of the end near the needle.
  • the first sliding member and the second sliding member are disposed on the inner side wall adjacent to one end of the hose, and are stretched and then are caught on the annular retaining ring through the two protrusions on the inner side walls of the first and second sliding members.
  • the positive progressive effect of the present invention is that the length of the operating portion of the disposable anti-acupuncture intravenous infusion needle of the present invention is shorter by providing a plurality of slider layers on the needle hub, and is unfolded through the layer of the slider to The use of neutralized needles after use improves safety and reduces patient suffering.
  • Figure 1 is a plan view of a disposable anti-acupuncture intravenous infusion needle in a deployed state in accordance with a preferred embodiment of the present invention.
  • Figure 5 is a cross-sectional view taken along line A-A of Figure 1.
  • FIG. 1 is a plan view of the disposable anti-acupuncture intravenous infusion needle of the present embodiment at the time of deployment
  • FIG. 2 is a plan view of the disposable anti-acupuncture intravenous infusion needle of the present embodiment when retracting, as shown in FIG.
  • the disposable anti-needle intravenous infusion needle according to the embodiment includes a needle holder 3, a needle sleeve, a hose 6 and a needle 4, and the needle sleeve is sleeved on the needle 4, and the hose 6 and the needle holder are provided.
  • 3 is connected, the needle seat 3 is cylindrical, one end of the needle seat 3 is fixed and communicates with the needle 4, and the other end is connected with the hose 6.
  • FIGS. 3 to 4 are schematic views showing the structure of a single-use anti-acupuncture intravenous infusion needle according to a preferred embodiment of the present invention
  • FIG. 5 is a cross-sectional view taken along line AA of FIG. 1, as shown in FIGS. 3 to 5, which is related to the present embodiment.
  • the disposable anti-needle intravenous infusion needle further comprises a sliding member 1 and a sliding member 2, wherein the sliding member 1 is sleeved outside the needle holder 3, and the sliding member 2 is sleeved outside the sliding member 1.
  • the sliding member 1 and the sliding member 2 are cylindrical in shape and are open at both ends, and the sliding member 1 located at the innermost layer is sleeved on the needle holder 3, and the total of the sliding member 1 and the sliding member 2 in the movable direction The length is greater than the length of the needle 4.
  • the elastic fastener 13 , the elastic fastener 21 and the slot 31 , the slot 32 , the slot 11 , and the slot 12 are disposed as a limiting mechanism on the hub 3 , the slider 1 and the slider 2 for use in the slider 1 When the slider 2 is unfolded or retracted, the slider 1, the slider 2 and the hub 3 are fixed to each other.
  • the card slot 31 and the card slot 32 are disposed on the needle holder 3
  • the elastic fastener 13 is disposed on the slider 1
  • the card slot 11 and the card slot 12 are disposed on the outer circumference of the slider 1
  • the elastic fastener 21 is disposed on the slider. 2
  • the elastic fastener 13, the elastic fastener 21 and the card slot 31, the card slot 32, the card slot 11, the card slot 12 are used when the slider 1 and the slider 2 slide to completely shield the needle 4 or the needle 4 is completely exposed. They are engaged with each other to restrict the movement of the slider 1 and the slider 2.
  • the slider 1 is further provided with an elastic clip 14 for ejecting when the slider 1 and the slider 2 slide to completely shield the needle 4 to prevent the slider 2 from reversing in the direction of the hose 6.
  • the slider 2 is provided with a smooth projection 22 at one end adjacent to the hose 6, and the projection 22 is for preventing the skin from being caught between the slider 1 and the slider 2 when the needle 4 is inserted into the human body.
  • the slider 1, the slider 2, and the hub 3 are slidably stacked, there is a gap between the slider 1 and the slider 2, and between the slider 1 and the hub 3. These gaps are easy to grip during operation
  • the patient's skin causes pain to the patient.
  • the protrusion 22 will interfere with the patient's skin during operation, so that the skin is slightly sunken, so that the skin around the contact portion of the protrusion 22 can avoid the sliding member with the slit 1.
  • the joint of the piece 2 and the hub is in contact so that the skin is not easily caught by the slit.
  • a smooth surface 23 is provided on the side of the slider 2, and an angle of 5° exists between the smooth surface 23 and the axis of the needle 4.
  • the slider 2 is provided with a notch on one side of the smooth surface 23, and the plane of the notch is parallel to the axis of the needle 4.
  • One end of the notch extends to the opening of the slider 2 away from the hose 6, and the other end extends until it intersects the smooth surface 23.
  • the distance between the notch and the axis of the needle 4 was 0.5 mm.
  • the single-use anti-needle intravenous infusion needle according to the embodiment further includes a handle 5, and the slider 2 is provided with at least 24 anti-skid regions (see FIG. 4).
  • the slider 1 and the slider 2 are made of an elastic material, and the slider 1 and the slider 2 are integrally formed with the elastic fastener, and the needle holder 3 is integrally formed with the card slot 32; the handle 5 is fixed to the needle holder 3 and connected to the hose 6. One end.
  • the sliding member 1 and the sliding member 2 are stacked on the outside of the needle holder and are in a retracted state. At this time, the needle 4 is exposed, and the needle can be shielded by the needle sleeve. In use, the needle sleeve is removed, and blood transfusion and the like are performed. After the operation is completed, the cylindrical slider 1 and the slider 2 are slidably deployed after being pulled out, and then disposed on the slider 1.
  • the slider 2 and the limiting mechanism (elastic clip, elastic fastener, etc.) on the hub are fixed end to end, and the needle 4 is shielded to avoid injury to the operator or the patient. In this way, the safety of the needle is ensured when the needle is pulled out, and the pain caused by the sudden rebound of the needle in the prior art is avoided.
  • the smoothing surface 23 is provided on the slider 2, so that the slider 4 and the slider 2 can also be in close contact with the skin during the unfolding process.
  • the smooth surface 23 extends to a gap near the axis of the needle axis, which can further satisfy the requirement that the needle is close to the skin and reduce the pain of the patient.
  • the slider 1 and the needle seat are provided with a protrusion and an annular retaining ring structure (not shown) as a blocking portion
  • the needle seat and the sliding member 1 are provided with a ring on the outer wall of the proximal end of the needle.
  • Shape retaining ring, slide 1 and One end of the sliding member 2 near the hose has two protrusions on the inner side wall, and after being stretched, the two protrusions on the inner side wall are caught on the annular retaining ring, and after the card slot and the elastic fastener are engaged, The slider 1 and the slider 2 are prevented from coming off by the tensile force.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Anesthesiology (AREA)
  • Veterinary Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Vascular Medicine (AREA)
  • Environmental & Geological Engineering (AREA)
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  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Finger-Pressure Massage (AREA)

Abstract

一种一次性使用防针刺静脉输液穿刺针，其包括有针座（3）、针套、软管（6）和针头（4），针套套设于针头（4）上，软管（6）与针座（3）连通，该静脉输液穿刺针还包括有若干滑件（1, 2）和若干限位机构（11, 12, 13, 21, 31, 32），针座（3）为筒形，针座（3）的一端固定并连通针头（4），另一端与软管（6）连接；滑件（1, 2）为两端开口的筒形，若干滑件（1, 2）相互嵌套，位于最里层的滑件（1）活动的套设于针座（3）上，若干滑件（1, 2）在活动方向上的总长度大于针头（4）的长度；限位机构（11, 12, 13, 21, 31, 32）设置于若干滑件（1, 2）和针座（3）。通过设置多个滑件（1, 2）层套于针座（3），使得该一次性使用防针刺静脉输液穿刺针的操作部位长度更短，并且通过滑件（1, 2）层层展开以在使用中和使用后遮蔽针头（4），提高了安全性并减轻了患者的痛苦。

Description

一次性使用防针刺静脉输液穿刺针
本申请要求申请日为2014年10月24日的中国专利申请CN 201410577644.7和CN201420621938.0的优先权。本申请引用上述中国专利申请的全文。
技术领域
本发明涉及一种静脉针，特别涉及一种一次性使用防针刺静脉输液穿刺针。
背景技术
目前，常用的一次性静脉针在使用前，需要给针头套上针套以保护针头，例如防止针头被弯折或碰撞等。使用时，拔掉针套时，容易造成刺伤危险，但真正危险在输液完成后处置阶段，从被输液者体内拔出后，在进行废弃处置时，不管是放入专业的处置盒还是带上针套，都容易被刺伤的危险，造成医务人员感染等严重后果。
针对这一缺陷，有的静脉针采用了伸缩式针头的技术手段，在输液完成后，利用弹簧等结构的弹力，将针头缩回至一用于保护针头的保护套等结构内。这样一来，虽然可以有效保护针头，避免医务人员被刺伤，但是却会因为针头回缩的机械动作造成患者极大的痛苦。
另一方面，伸缩式针头在缩回时，由于可以伸缩的机械结构往往存在缝隙，可能将皮肤夹住对患者造成更大的痛苦。
发明内容
本发明要解决的技术问题是为了克服现有技术的静脉针存在安全性问题且机械动作造成患者痛苦的缺陷，提供一种安全性更好、机械动作所造成 的痛苦更低的一次性使用防针刺静脉输液穿刺针。
本发明是通过下述技术方案来解决上述技术问题：
一种一次性使用防针刺静脉输液穿刺针，其包括有一针座、一针套、一软管和一针头，所述针套套设于所述针头上，所述软管与所述针座连通，其特点在于，所述一次性使用防针刺静脉输液穿刺针还包括有若干滑件和若干限位机构，所述针座为筒形，所述针座的一端固定并连通所述针头，另一端与所述软管连接；
所述滑件为两端开口的筒形，所述若干滑件相互嵌套，位于最里层的所述滑件活动的套设于所述针座上，所述若干滑件在活动方向上的总长度大于所述针头的长度；
所述限位机构设置于所述若干滑件和所述针座，用于在所述若干滑件滑动展开至完全遮蔽所述针头后，将最里层的所述滑件固定于所述针座上，并且所述若干滑件之间相互固定。
此处，软管为本技术领域常用的用于输血输液等的柔性软管。也就是说，在使用前，若干滑件层叠的套设于针座外，处于回缩的状态，此时针头暴露在外，可以通过针套套住针头对针头进行遮蔽。使用时，将针套取下，进行输血等作业，在作业完成后，拔出针头的过程中，将若干个筒形的滑件在滑动展开后，通过设置于滑件和针座上的限位机构首尾相接的固定，同时遮蔽针头以避免针头对操作者或患者的伤害。这样一来，拔出针头时既保证了安全性，同时又避免了现有技术中针头突然回弹所造成的痛苦。
另外，由于静脉针操作部位的长度(即除去软管部分的针座等部件的长度)至少应该是针座加上针头的长度，而针头的长度一般为标准长度不可改变，因此，针座的长度设计成为决定静脉针操作部位长度的关键。本发明中，由于采用了多个滑件层叠相套的结构，在回缩状态时(即针头完全暴露时)，相比只采用一个滑件，多个滑件层套结构可以明显的降低针座的设计长度。
较佳的，所述一次性使用防针刺静脉输液穿刺针包括有一第一滑件和一 第二滑件，所述第一滑件活动套设于所述针座外，所述第二滑件活动套设于所述第一滑件外。
较佳的，所述限位机构包括有一第一弹性垫圈、两个第二弹性垫圈和两个第三弹性垫圈；
所述第一弹性垫圈贴设于所述第一滑件靠近所述软管的一端的内周上，且，所述第一弹性垫圈的边缘与所述第一滑件的内壁平滑的贴合；
两个所述第二弹性垫圈套合并贴设于所述针座上，所述第二弹性垫圈用于在所述第一滑件和所述第二滑件滑动伸展至完全遮蔽所述针头或所述针头完全暴露时，与所述第一弹性垫圈相卡合，以限制所述第一滑件的移动；
所述第三弹性垫圈分别设置于所述第一滑件远离所述软管的一端的外周和所述第二滑件靠近所述软管的内周，所述第三弹性垫圈用于在所述第一滑件和所述第二滑件滑动伸展至完全遮蔽所述针头或所述针头完全暴露时，相互卡合以限制所述第二滑件的移动。
较佳的，所述限位机构包括两个弹性扣件和四个卡槽；
两个所述卡槽设置于所述针座上，一个所述弹性扣件设置于所述第一滑件上，所述第一滑件的外周上也设置有两个所述卡槽，所述第二滑件上也设置有一所述弹性扣件，所述弹性扣件和所述卡槽用于在所述第一滑件和所述第二滑件滑动至完全遮蔽所述针头或者所述针头完全暴露时相互扣合，以限制所述第一滑件和所述第二滑件的移动。
较佳的，所述第一滑件上还设置有一弹性卡件，所述弹性卡件用于在所述第一滑件和所述第二滑件滑动至完全遮蔽所述针头时弹出以防止所述第二滑件往所述软管的方向倒退。
此处，由于第一滑件和第二滑件展开后，需要保证遮蔽针头不暴露，其相互之间的卡合的稳定性直接与静脉针使用的安全性相关。因此在第一滑件的外周设置了向外弹出的弹性卡件，在第二滑件顺着第一滑件展开至预定的位置后，弹性卡件向外弹出，若第二滑件往回滑动，则弹性卡件会抵触第二 滑件的边缘等部位，使其无法往回滑动。
较佳的，所述第二滑件在靠近所述软管的一端环设有一平滑的突出部。突出部用于在所述针头插入人体时防止皮肤卡在所述第一滑件与所述第二滑件的夹缝。
此处，由于滑件、针座之间是滑动叠套的，因此滑件之间、滑件与针座之间必然存在缝隙。这些缝隙在操作过程中容易夹住患者的皮肤，造成患者的痛苦。设置有突出部后，突出部在操作中会与患者皮肤抵触，使得皮肤产生轻微凹陷，这样一来与突出部接触部位周边的皮肤就能避免与带有缝隙的第一滑件、第二滑件和针座的结合部接触，使得皮肤不容易被缝隙夹住。
较佳的，所述第二滑件的侧边上设置有一平滑面，所述平滑面与所述针头的轴心线之间存在5°～20°的夹角。
较佳的，所述第二滑件在所述平滑面的一侧设置有一缺口，所述缺口的所在的平面与所述针头的轴心线平行；
所述缺口的一端延伸至所述第二滑件远离所述软管的开口，另一端延伸直至与所述平滑面相交。
此处，在第一滑件、第二滑件展开的过程中，针头需要尽量保持贴近患者的皮肤，因此，如果第一滑件、第二滑件直径过大，则无法满足要求。所以在第二滑件上设置平滑面，可以使第一滑件、第二滑件在展开过程中针头也能贴近皮肤。在平滑面延伸至靠近针头轴心线开设缺口，可以进一步满足针头贴近皮肤的要求，减少患者的痛苦。同时，为了防止针头在操作完成时或完成后误伤操作者等，针头与缺口的距离不能太近。
较佳的，所述缺口与所述针头的轴心线的距离为一设定距离。
较佳的，所述一次性使用防针刺静脉输液穿刺针还包括有一把手，所述第二滑件上设置有至少一防滑区；
所述滑件由弹性材料制成，所述滑件与所述弹性扣件一体成型，所述针座与所述卡槽一体成型；
所述把手固定于所述针座与所述软管连接的一端；
所述限位机构还包括有环设于所述第一滑件或所述针座上的至少一挡接部，所述挡接部用于在所述卡槽与所述弹性扣件卡合后，防止所述第一滑件、所述第二滑件在拉伸力的作用下脱出。
此处，挡接部可以进一步防止滑件、针座直接的脱出，挡接部可以是任意的阻挡性结构，例如针座与第一滑件上靠近针头的一端外壁上设置环状挡圈，第一滑件和第二滑件靠近软管的一端在内侧壁上设置两个突起，拉伸后通过第一、第二滑件内侧壁上两个突起卡在环状挡圈上。
本发明的积极进步效果在于：通过设置多个滑件层套于针座，使得本发明的一次性使用防针刺静脉输液穿刺针的操作部位长度更短，并且通过滑件层层展开以在使用中和使用后遮蔽针头，提高了安全性并减轻了患者的痛苦。
附图说明
图1为本发明较佳实施例的一次性使用防针刺静脉输液穿刺针在展开时的平面图。
图2为本发明较佳实施例的一次性使用防针刺静脉输液穿刺针在回缩时的平面图。
图3为本发明较佳实施例的一次性使用防针刺静脉输液穿刺针的结构示意图。
图4为本发明较佳实施例的一次性使用防针刺静脉输液穿刺针的结构示意图。
图5为图1沿A-A线的剖视图。
具体实施方式
下面通过实施例的方式进一步说明本发明，但并不因此将本发明限制在所述的实施例范围之中。
图1为本实施例的一次性使用防针刺静脉输液穿刺针在展开时的平面图，图2为本实施例的一次性使用防针刺静脉输液穿刺针在回缩时的平面图，如图1～2所示，本实施例涉及的一次性使用防针刺静脉输液穿刺针包括有针座3、针套、软管6和针头4，针套套设于针头4上，软管6与针座3连通，针座3为筒形，针座3的一端固定并连通针头4，另一端与软管6连接。
图3～4为本发明较佳实施例的一次性使用防针刺静脉输液穿刺针的结构示意图，图5为图1沿A-A线的剖视图，如图3～5所示，本实施例涉及的一次性使用防针刺静脉输液穿刺针还包括有滑件1和滑件2，滑件1活动套设于针座3外，滑件2活动套设于滑件1外。
滑件1和滑件2为相互嵌套、两端开口的筒形，位于最里层的滑件1活动的套设于针座3上，滑件1和滑件2在活动方向上的总长度大于针头4的长度。
弹性扣件13、弹性扣件21和卡槽31、卡槽32、卡槽11、卡槽12作为限位机构设置于针座3、滑件1和滑件2上，用于在滑件1和滑件2展开后或回缩状态时，将滑件1、滑件2和针座3相互卡合的固定。
其中，卡槽31、卡槽32设置于针座3上，弹性扣件13设置于滑件1上，卡槽11、卡槽12设置于滑件1的外周，弹性扣件21设置于滑件2上，弹性扣件13、弹性扣件21和卡槽31、卡槽32、卡槽11、卡槽12用于在滑件1和滑件2滑动至完全遮蔽针头4或者针头4完全暴露时相互扣合，以限制滑件1和滑件2的移动。
滑件1上还设置有弹性卡件14，弹性卡件14用于在滑件1和滑件2滑动至完全遮蔽针头4时弹出以防止滑件2往软管6的方向倒退。
滑件2在靠近软管6的一端环设有一平滑的突出部22，突出部22用于在针头4插入人体时防止皮肤卡在滑件1与滑件2的夹缝。
由于滑件1、滑件2、针座3之间是滑动叠套的，因此滑件1和滑件2之间、滑件1与针座3之间必然存在缝隙。这些缝隙在操作过程中容易夹住 患者的皮肤，造成患者的痛苦。设置有突出部22后，突出部22在操作中会与患者皮肤抵触，使得皮肤产生轻微凹陷，这样一来与突出部22接触部位周边的皮肤就能避免与带有缝隙的滑件1、滑件2和针座的结合部接触，使得皮肤不容易被缝隙夹住。
滑件2的侧边上设置有平滑面23，平滑面23与针头4的轴心线之间存在5°的夹角。滑件2在平滑面23的一侧设置有一缺口，缺口的所在的平面与针头4的轴心线平行。缺口的一端延伸至滑件2远离软管6的开口，另一端延伸直至与平滑面23相交。缺口与针头4的轴心线的距离为0.5mm。
本实施例涉及的一次性使用防针刺静脉输液穿刺针还包括有一把手5，滑件2上设置有至少24防滑区(见图4)。滑件1和滑件2由弹性材料制成，且滑件1和滑件2与弹性扣件一体成型，针座3与卡槽32一体成型；把手5固定于针座3与软管6连接的一端。
在使用前，滑件1、滑件2层叠的套设于针座外，处于回缩的状态，此时针头4暴露在外，可以通过针套套住针头4对针头进行遮蔽。使用时，将针套取下，进行输血等作业，在作业完成后，拔出针头4的过程中，将筒形的滑件1、滑件2在滑动展开后，通过设置于滑件1、滑件2和针座上的限位机构(弹性卡件、弹性扣件等)首尾相接的固定，同时遮蔽针头4以避免针头对操作者或患者的伤害。这样一来，拔出针头时既保证了安全性，同时又避免了现有技术中针头突然回弹所造成的痛苦。
另外，滑件1、滑件2展开的过程中，针头4需要尽量保持贴近患者的皮肤，因此，如果滑件1、滑件2直径过大，则无法满足要求。所以在滑件2上设置平滑面23，可以使滑件1、滑件2在展开过程中针头4也能贴近皮肤。在平滑面23延伸至靠近针头轴心线开设缺口，可以进一步满足针头贴近皮肤的要求，减少患者的痛苦。
另外，滑件1和针座上都环设有作为挡接部的凸起和环状挡圈结构(图中未示出)，针座与滑件1上近针头的一端外壁上设有环状挡圈，滑件1和 滑件2近软管的一端在内侧壁上有两个凸起，拉伸后通过内侧壁上两个凸起卡在环状挡圈后，用于在卡槽与弹性扣件卡合后，防止滑件1、滑件2在拉伸力的作用下脱出。
虽然以上描述了本发明的具体实施方式，但是本领域的技术人员应当理解，这仅是举例说明，本发明的保护范围是由所附权利要求书限定的。本领域的技术人员在不背离本发明的原理和实质的前提下，可以对这些实施方式做出多种变更或修改，例如，不使用弹性扣件和卡槽这样的卡扣结构，而是采用弹性垫圈相互卡合等方式紧固滑件于针座上等，但这些变更和修改均落入本发明的保护范围。

Claims (10)

  1. 一种一次性使用防针刺静脉输液穿刺针，其包括有一针座、一针套、一软管和一针头，所述针套套设于所述针头上，所述软管与所述针座连通，其特征在于，所述一次性使用防针刺静脉输液穿刺针还包括有若干滑件和若干限位机构，所述针座为筒形，所述针座的一端固定并连通所述针头，另一端与所述软管连接；
    所述滑件为两端开口的筒形，所述若干滑件相互嵌套，位于最里层的所述滑件活动的套设于所述针座上，所述若干滑件在活动方向上的总长度大于所述针头的长度；
    所述限位机构设置于所述若干滑件和所述针座，用于在所述若干滑件滑动展开至完全遮蔽所述针头后，将最里层的所述滑件固定于所述针座上，并且所述若干滑件之间相互固定。
  2. 如权利要求1所述的一次性使用防针刺静脉输液穿刺针，其特征在于，所述一次性使用防针刺静脉输液穿刺针包括有一第一滑件和一第二滑件，所述第一滑件活动套设于所述针座外，所述第二滑件活动套设于所述第一滑件外。
  3. 如权利要求1-2中至少一项所述的一次性使用防针刺静脉输液穿刺针，其特征在于，所述限位机构包括有一第一弹性垫圈、两个第二弹性垫圈和两个第三弹性垫圈；
    所述第一弹性垫圈贴设于所述第一滑件靠近所述软管的一端的内周上，且，所述第一弹性垫圈的边缘与所述第一滑件的内壁平滑的贴合；
    两个所述第二弹性垫圈套合并贴设于所述针座上，所述第二弹性垫圈用于在所述第一滑件和所述第二滑件滑动伸展至完全遮蔽所述针头或所述针头完全暴露时，与所述第一弹性垫圈相卡合，以限制所述第一滑件的移动；
    所述第三弹性垫圈分别设置于所述第一滑件远离所述软管的一端的外 周和所述第二滑件靠近所述软管的内周，所述第三弹性垫圈用于在所述第一滑件和所述第二滑件滑动伸展至完全遮蔽所述针头或所述针头完全暴露时，相互卡合以限制所述第二滑件的移动。
  4. 如权利要求1-3中至少一项所述的一次性使用防针刺静脉输液穿刺针，其特征在于，所述限位机构包括两个弹性扣件和四个卡槽；
    两个所述卡槽设置于所述针座上，一个所述弹性扣件设置于所述第一滑件上，所述第一滑件的外周上也设置有两个所述卡槽，所述第二滑件上也设置有一所述弹性扣件，所述弹性扣件和所述卡槽用于在所述第一滑件和所述第二滑件滑动至完全遮蔽所述针头或者所述针头完全暴露时相互扣合，以限制所述第一滑件和所述第二滑件的移动。
  5. 如权利要求1-4中至少一项所述的一次性使用防针刺静脉输液穿刺针，其特征在于，所述第一滑件上还设置有一弹性卡件，所述弹性卡件用于在所述第一滑件和所述第二滑件滑动至完全遮蔽所述针头时弹出以防止所述第二滑件往所述软管的方向倒退。
  6. 如权利要求1-5中至少一项所述的一次性使用防针刺静脉输液穿刺针，其特征在于，所述第二滑件在靠近所述软管的一端环设有一平滑的突出部。
  7. 如权利要求1-6中至少一项所述的一次性使用防针刺静脉输液穿刺针，其特征在于，所述第二滑件的侧边上设置有一平滑面，所述平滑面与所述针头的轴心线之间存在5°～20°的夹角。
  8. 如权利要求1-7中至少一项所述的一次性使用防针刺静脉输液穿刺针，其特征在于，所述第二滑件在所述平滑面的一侧设置有一缺口，所述缺口的所在的平面与所述针头的轴心线平行；
    所述缺口的一端延伸至所述第二滑件远离所述软管的开口，另一端延伸直至与所述平滑面相交。
  9. 如权利要求1-8中至少一项所述的一次性使用防针刺静脉输液穿刺 针，其特征在于，所述缺口与所述针头的轴心线的距离为一设定距离。
  10. 如权利要求1-9中至少一项所述的一次性使用防针刺静脉输液穿刺针，其特征在于，所述一次性使用防针刺静脉输液穿刺针还包括有一把手，所述第二滑件上设置有至少一防滑区；
    所述滑件由弹性材料制成，所述滑件与所述弹性扣件一体成型，所述针座与所述卡槽一体成型；
    所述把手固定于所述针座与所述软管连接的一端；
    所述限位机构还包括有环设于所述第一滑件或所述针座上的至少一挡接部，所述挡接部用于在所述卡槽与所述弹性扣件卡合后，防止所述第一滑件、所述第二滑件在拉伸力的作用下脱出。
PCT/CN2015/075658 2014-10-24 2015-04-01 一次性使用防针刺静脉输液穿刺针 WO2016062016A1 (zh)

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ES15851761T ES2777309T3 (es) 2014-10-24 2015-04-01 Aguja de punción desechable para transfusión intravenosa no destinada a acupuntura
JP2016562951A JP6286063B2 (ja) 2014-10-24 2015-04-01 使い捨て針刺し防止静脈輸液用穿刺針
SG11201607162QA SG11201607162QA (en) 2014-10-24 2015-04-01 Disposable Safe Vein Transfusion Puncture Needle
MX2016012572A MX2016012572A (es) 2014-10-24 2015-04-01 Aguja desechable para puncion segura en transfusion venosa.
BR112016021855-8A BR112016021855B1 (pt) 2014-10-24 2015-04-01 Agulha de punção de transfusão de veia segura descartável
AU2015336700A AU2015336700B2 (en) 2014-10-24 2015-04-01 Disposable anti-acupuncture intravenous infusion puncture needle
US15/312,581 US10188803B2 (en) 2014-10-24 2015-04-01 Disposable safe vein transfusion puncture needle
CA2943156A CA2943156C (en) 2014-10-24 2015-04-01 Disposable safe vein transfusion puncture needle
KR1020167022824A KR101893804B1 (ko) 2014-10-24 2015-04-01 1회용 찔림방지 정맥수액 천자침
EP15851761.5A EP3093034B1 (en) 2014-10-24 2015-04-01 Disposable anti-acupuncture intravenous infusion puncture needle
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