WO2018032625A1 - 防针刺结构及防针刺静脉输液穿刺针 - Google Patents

防针刺结构及防针刺静脉输液穿刺针 Download PDF

Info

Publication number
WO2018032625A1
WO2018032625A1 PCT/CN2016/105651 CN2016105651W WO2018032625A1 WO 2018032625 A1 WO2018032625 A1 WO 2018032625A1 CN 2016105651 W CN2016105651 W CN 2016105651W WO 2018032625 A1 WO2018032625 A1 WO 2018032625A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
sliding member
sliding
limiting mechanism
disposed
Prior art date
Application number
PCT/CN2016/105651
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 CN201610676077.XA external-priority patent/CN107754048A/zh
Priority claimed from CN201620888833.0U external-priority patent/CN206198391U/zh
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
Publication of WO2018032625A1 publication Critical patent/WO2018032625A1/zh

Links

Images

Classifications

    • 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

Definitions

  • the invention relates to an anti-acupuncture structure and an anti-needle intravenous infusion needle.
  • the commonly used disposable infusion venous needle needs to be put on the needle sleeve to protect the needle before use, for example, to prevent the needle from being bent or collided.
  • the real danger is that after the infusion is completed, after the infusion is taken out, after disposing, whether it is put into a professional disposal box Or bring a needle sleeve, there is a danger of being easily stabbed, resulting in serious consequences such as medical staff infection.
  • some venous needles use a technique of a telescopic needle. After the infusion is completed, the needle is retracted into a protective sleeve for protecting the needle by using the elastic force of a spring or the like. In this way, although the needle can be effectively protected and the medical staff is prevented from being stabbed, the patient suffers great pain due to the mechanical action of the needle retracting.
  • the technical problem to be solved by the present invention is to overcome the defect that the prior art venous needle has safety problems and the mechanical action causes pain to the patient, and provides a needle-proof structure with better safety and less pain caused by mechanical action. And anti-needle intravenous infusion needle.
  • An anti-acupuncture structure comprising:
  • the first end of the needle holder is for fixing the needle
  • the needle handle is fixed to the second end of the needle seat
  • the plurality of sliding members are cylindrical and open at both ends, and are nested with each other, and the innermost sliding member is slidably sleeved on the needle seat, and the total length of the plurality of sliding members in the sliding direction is greater than the needle length;
  • the first limiting mechanism is disposed on the plurality of sliding members and the needle seat, and the first limiting mechanism can limit the sliding of the innermost sliding member relative to the needle seat, and can limit between the plurality of sliding members Mutual slipping;
  • the second limiting mechanism, the second limiting mechanism is disposed on the needle handle and the innermost sliding member, and the second limiting mechanism can limit the rotation of the innermost sliding member relative to the needle handle.
  • the anti-needle structure comprises two sliding members, the two sliding members are respectively a first sliding member and a second sliding member, the first sliding member is slidably sleeved outside the needle seat, and the second sliding member is slidably The sleeve is arranged outside the first sliding member.
  • a first smooth surface is disposed on a side of the first slider, and a second smooth surface is disposed on a side of the second slider, the first smooth surface being parallel to the second smooth surface.
  • the first smooth surface and the second smooth surface can reduce the cross-sectional area of the slider so that the needle can be closer to the skin.
  • the second slider is further provided with an operation portion on the side thereof, the operation portion is disposed on the opposite side of the second smooth surface, and the operation portion is an arcuate surface that is recessed inward and is non-slip.
  • the operation portion is provided so that the medical staff can easily operate the respective sliders with the fingers.
  • the sides of the hub are provided with opposite third smooth surfaces, both of which are parallel to the first slider and parallel to the axis of the needle.
  • a third smooth surface is provided to reduce the cross-sectional area of the needle hub so that the needle can be closer to the skin.
  • the second limiting mechanism comprises mutually matching protrusions and depressions, the protrusions being arranged on the needle handle and On one of the first sliders, a recess is provided on the other of the needle shank and the first slider, the projection being engageable with the recess to limit rotation of the first slider relative to the needle shank.
  • the first limiting mechanism comprises six card slots and three buckles.
  • each set of card slots includes two card slots arranged along the direction of the axis of the needle, and the two card slots are respectively disposed on the needle Both ends of the seat,
  • the two sides of the first slider are provided with two card slots arranged along the direction of the axis of the needle.
  • the side of the first sliding member is further provided with two buckles arranged along the circumferential direction of the first sliding member, and the two buckles are disposed at one end of the first sliding member near the needle handle.
  • the buckle is engageable with the card slot to limit sliding of the first slider relative to the hub and sliding of the second slider relative to the first slider.
  • the card slot comprises intersecting vertical faces and inclined faces, the vertical faces being perpendicular to the axis of the needle, the inclined faces being inclined from the bottom of the vertical faces toward the axis away from the axis of the needle, the snap being biased towards the axis of the needle.
  • the anti-needle structure further comprises a third limiting mechanism, the third limiting mechanism is disposed on the needle seat, the first sliding member and the second sliding member, and the third limiting mechanism is configured to engage the card slot and the buckle After that, the first slider and the second slider are prevented from coming out under the action of the tensile force.
  • the third limiting mechanism comprises a plurality of annular inward projections and a plurality of annular outward projections;
  • the first end of the needle seat is provided with an annular outward protrusion
  • An end of the first sliding member away from the needle seat is provided with an annular outward protrusion
  • An end of the first slider and the second slider adjacent to the needle handle are respectively provided with an annular inward protrusion
  • the inner diameter of the annular inwardly protruding portion of the second sliding member is smaller than the outer diameter of the annular outwardly protruding portion of the first sliding member, and the inner diameter of the annular inwardly protruding portion of the first sliding member is smaller than that of the needle seat. Ring The outer diameter of the outward projection.
  • An anti-acupuncture intravenous infusion needle comprising a needle, an anti-acupuncture structure as described above, a hose and a needle sleeve;
  • the needle is fixed to the first end of the needle seat, and the hose is sleeved on the second end of the needle seat.
  • the needle seat is provided with an infusion channel, and the needle and the hose are connected with the infusion channel, and the needle cover covers the needle.
  • the positive progress of the present invention is that the operation portion of the anti-needle intravenous infusion needle is made shorter by providing a plurality of slider layers on the needle holder, and is spread by the layer of the slider to be used in use and after use.
  • the needle is shielded to improve safety and reduce the pain of the patient.
  • the second limiting mechanism is provided so that the innermost slider can not be rotated relative to the needle seat, thereby making it easier to operate.
  • FIG. 1 is a schematic perspective view showing the structure of an anti-acupuncture structure according to a preferred embodiment of the present invention
  • Figure 2 is a front elevational view showing the anti-acupuncture structure of Figure 1;
  • Figure 3 is a side elevational view showing the anti-acupuncture structure of Figure 1;
  • FIG. 4 is a rear perspective view of the anti-acupuncture structure of FIG. 1;
  • Figure 5 is a perspective view showing the structure of a needle-proof intravenous infusion needle according to a preferred embodiment of the present invention.
  • Fig. 6 is a perspective view showing the structure of an anti-acupuncture intravenous infusion needle according to a preferred embodiment of the present invention, wherein the needle cover is removed.
  • the anti-needle structure 20 includes: a needle seat 22 , a needle handle 21 , a plurality of sliders, and a first The limiting mechanism, the second limiting member and the third limiting mechanism.
  • the first end of the hub 22 is used to secure the needle 30.
  • the needle handle 21 is fixed to the second end of the hub 22.
  • the plurality of sliders are cylindrical and open at both ends and are nested with each other.
  • the innermost slider is slidably sleeved on the hub 22, and the total length of the plurality of sliders in the sliding direction is greater than the length of the needle 30.
  • the number of sliders can be set according to actual needs, such as three or more sliders, as long as the total length of the sliders in the sliding direction is greater than the length of the needles 30.
  • the sliding here refers to the displacement in the direction of the axis of the needle 30.
  • the number of the sliders is two, which are the first slider 23 and the second slider 24, respectively.
  • the first sliding member 23 is slidably sleeved outside the needle seat 22
  • the second sliding member 24 is slidably sleeved outside the first sliding member 23 .
  • a first smooth surface 231 is disposed on a side of the first slider 23, and a second smooth surface 241 is disposed on a side of the second slider 24.
  • the first smooth surface 231 is parallel to the first surface.
  • An operation portion 242 is further provided on the side of the second slider 24, and the operation portion 242 is disposed on the opposite side of the second smooth surface 241.
  • the operation portion 242 is an arcuate surface that is recessed inward and is non-slip.
  • Opposite two third smooth faces 221 are provided on the sides of the hub 22, both of which are parallel to the first slider 23 and parallel to the axis of the needle 30.
  • the first limiting mechanism is disposed on the plurality of sliders and the hub 22, and the first limiting mechanism can restrict the sliding of the innermost slider relative to the hub 22, and can restrict mutual sliding between the plurality of sliders.
  • the first limiting mechanism includes six card slots 25 and three buckles 26.
  • Each set of slots includes two card slots 25 arranged along the direction of the axis of the needle 30, and two card slots 25 are respectively disposed at both ends of the hub 22.
  • Two card slots 25 are arranged on the side of the first slider 23 in the direction of the axis of the needle 30.
  • two buckles 26 arranged along the circumferential direction of the first slider 23 are disposed on the side edges of the first slider 23, and the two buckles 26 are disposed at one end of the first slider 23 near the needle shank 21.
  • One end of the second slider 24 near the needle shank 21 is provided with a buckle 26.
  • the buckle 26 is engageable with the card slot 25 to limit the sliding of the first slider 23 relative to the hub 22 and the sliding of the second slider 24 relative to the first slider 23.
  • the card slot 25 includes intersecting vertical faces and inclined faces, the vertical faces being perpendicular to the axis of the needle 30, the inclined faces being inclined from the bottom of the vertical faces toward the axis away from the axis of the needle 30, and the buckle 26 being biased toward the axis of the needle 30 Pressure.
  • the second limiting mechanism is disposed on the needle handle 21 and the innermost slider, and the second limiting mechanism can restrict the rotation of the innermost slider relative to the needle handle 21.
  • the second limiting mechanism includes a matching protrusion 232 and a recess 211.
  • the protrusion 232 is disposed on one of the first sliders 23.
  • the recess 211 is disposed on the needle handle 21, and the protrusion 232 can be engaged with the recess 211. Thereby the rotation of the first slider 23 with respect to the needle shank 21 is restricted.
  • the positions of the protrusions 232 and the recesses 211 can be interchanged, the protrusions 232 can be disposed on the needle handle 21, and the recesses 211 can be disposed on the first slider 23.
  • the third limiting mechanism is disposed on the needle seat 22, the first sliding member 23 and the second sliding member 24, and the third limiting mechanism is configured to prevent the first sliding member 23 after the engaging groove 25 and the buckle 26 are engaged
  • the two sliders 24 are released by the tensile force.
  • the card slot 25 and the buckle 26 are arranged to move in a direction in which the sliding member is easily moved in the direction of the stretching force, but cannot be retracted. Therefore, the third limit mechanism is provided so that the slider and the hub 22 cannot be separated from each other.
  • the third limiting mechanism may not be provided.
  • the third limiting mechanism includes a plurality of annular inward projections and a plurality of annular outward projections;
  • the first end of the hub 22 is provided with an annular outward protrusion
  • An end of the first sliding member 23 away from the needle seat 22 is provided with an annular outward protrusion
  • One ends of the first slider 23 and the second slider 24 near the hub 22 are respectively provided with a ring shape Inward projection;
  • the inner diameter of the annular inward protruding portion of the second sliding member 24 is smaller than the outer diameter of the annular outward protruding portion of the first sliding member 23, and the inner diameter of the annular inward protruding portion of the first sliding member 23 is smaller than the inner diameter of the first sliding member 23.
  • the anti-acupuncture intravenous infusion needle 10 includes a needle 30, an anti-acupuncture structure 20 as described above, a hose 40, and a needle guard 50.
  • the needle 30 is fixed to the first end of the needle hub 22, and the hose 40 is sleeved on the second end of the needle seat 22.
  • the needle base 22 is provided with an infusion channel, and the needle 30 and the hose 40 are connected to the infusion channel, and the needle sleeve 50 Cover the needle 30.
  • Fig. 5 illustrates a state in which the anti-needling structure 20 is completely contracted.
  • the needle cover 50 is removed and the needle 30 is then inserted into the patient's skin for infusion.
  • the first slider 23 and the second slider 24 are stretched by the operation portion 242 while the needle 30 is pulled out, so that the first slider 23 and the second slider 24 slides in the direction of full deployment until the anti-needling structure 20 is fully deployed and the needle 30 is fully withdrawn.
  • Figure 1 illustrates the state in which the anti-needling structure 20 is fully deployed. During the withdrawal of the needle 30, the needle 30 is shielded by the first slider 23 and the second slider 24, thereby greatly reducing the risk of stabbing medical personnel.
  • the annular inward projection will abut the annular outward projection such that the first slider 23 cannot be disengaged from the hub 22.
  • the second slider 24 also cannot be detached from the first slider 23.
  • the engagement of the buckle 26 with the card slot 25 also prevents the first slider 23 and the second slider 24 from contracting.

Landscapes

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

Abstract

一种防针刺结构（20）及防针刺静脉输液穿刺针（10），该防针刺结构（20）包含：针座（22），针座（22）的第一端用于固定针头（30）；针柄（21），针柄（21）固定于针座（22）的第二端；多个滑件（23,24），多个滑件（23,24）为两端开口的筒形并且相互嵌套，最里层的滑件（23）可滑动地套设于针座（22）上，多个滑件（23,24）在滑动方向上的总长度大于针头（30）的长度；第一限位机构（25,26），第一限位机构（25,26）能够限制最里层的滑件（23）相对于针座（22）的滑动，并且能够限制多个滑件（23,24）之间的相互滑动；第二限位机构（232,211），第二限位机构（232,211）设置于针柄（21）和最里层的滑件（23），第二限位机构（232,211）能够限制最里层的滑件（23）相对于针柄（21）的转动。通过设置多个滑件层套于针座（22），提高了安全性并减轻了患者的痛苦，同时，设置了第二限位机构（232,211），使得最内层的滑件（23）不能相对于针座（22）转动，从而更易操作。

Description

防针刺结构及防针刺静脉输液穿刺针
本申请要求申请日为2016年8月16日的中国专利申请CN201610676077.X以及CN201620888833.0的优先权。本申请引用上述中国专利申请的全文。
技术领域
本发明涉及一种防针刺结构及防针刺静脉输液穿刺针。
背景技术
目前，常用的一次性输液静脉针在使用前，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，但真正的危险是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，都有容易被刺伤的危险，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防针刺结构及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：
一种防针刺结构，其包含：
针座，针座的第一端用于固定针头；
针柄，针柄固定于针座的第二端；
多个滑件，多个滑件为两端开口的筒形并且相互嵌套，最里层的滑件可滑动地套设于针座上，多个滑件在滑动方向上的总长度大于针头的长度；
第一限位机构，第一限位机构设置于多个滑件和针座，第一限位机构能够限制最里层的滑件相对于针座的滑动，并且能够限制多个滑件之间的相互滑动；
第二限位机构，第二限位机构设置于针柄和最里层的滑件，第二限位机构能够限制最里层的滑件相对于针柄的转动。
优选地，防针刺结构包含两个滑件，两个滑件分别为第一滑件和第二滑件，第一滑件可滑动地套设于针座外，第二滑件可滑动地套设于第一滑件外。
优选地，第一滑件的侧边上设置有第一平滑面，第二滑件的侧边上设置有第二平滑面，第一平滑面平行于第二平滑面。
在本发明中，第一平滑面和第二平滑面可以缩小滑件的横截面积，从而使得针头可以更贴近皮肤。
优选地，第二滑件侧边上还设置有操作部，操作部设置在第二平滑面的相反侧，操作部为向内凹陷的弧形表面并且能够防滑。
在本发明中，设置操作部，从而医护人员可以容易地利用手指操作各个滑件。
优选地，针座的侧边上设置有相反的两个第三平滑面，两个第三平滑面均平行于第一滑件，并且平行于针头的轴心。
在本发明中，设置第三平滑面，从而缩小针座的横截面积，从而使得针头可以更贴近皮肤。
优选地，第二限位机构包含相互适配的凸起和凹陷，凸起设置在针柄和 第一滑件中的一个上，凹陷设置在针柄和第一滑件中的另一个上，凸起能够与凹陷接合，从而限制第一滑件相对于针柄的转动。
优选地，第一限位机构包含六个卡槽和三个卡扣，
针座的侧边上设置有沿着针座的圆周方向排列的两组卡槽，每组卡槽包含沿着针头的轴心的方向排列的两个卡槽，两个卡槽分别设置在针座的两端，
第一滑件的侧边上设置有沿着针头的轴心的方向排列的两个卡槽，
第一滑件的侧边上还设置有沿着第一滑件的圆周方向排列的两个卡扣，两个卡扣设置在第一滑件的靠近针柄的一端，
第二滑件的靠近针柄的一端设置有一个卡扣；
卡扣能够与卡槽接合，从而限制第一滑件相对于针座的滑动和第二滑件相对于第一滑件的滑动。
优选地，卡槽包含相交的垂直面和倾斜面，垂直面垂直于针头的轴心，倾斜面从垂直面的底部向远离针头的轴心的方向倾斜，卡扣朝向针头的轴心偏压。
优选地，防针刺结构还包含第三限位机构，第三限位机构设置在针座、第一滑件和第二滑件上，第三限位机构用于在卡槽与卡扣接合后，防止第一滑件、第二滑件在拉伸力的作用下脱出。
优选地，第三限位机构包含多个环形向内突出部和多个环形向外突出部；
针座的第一端设置有一个环形向外突出部；
第一滑件的远离针座的一端设置有一个环形向外突出部；
第一滑件和第二滑件的靠近针柄的一端分别设置有一个环形向内突出部；
设于第二滑件的环形向内突出部的内径小于设于第一滑件的环形向外突出部的外径，设于第一滑件的环形向内突出部的内径小于设于针座的环形 向外突出部的外径。
一种防针刺静脉输液穿刺针，其包含针头、如上所述的防针刺结构、软管和针套；
针头固定于针座的第一端，软管套设于针座的第二端，针座中设有输液通道，针头和软管均与输液通道连通，针套覆盖针头。
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，使得该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，同时，设置了第二限位机构，使得最内层的滑件不能相对于针座转动，从而更易操作。
附图说明
图1为本发明的优选实施例的防针刺结构的立体结构示意图；
图2为图1的防针刺结构的正视结构示意图；
图3为图1的防针刺结构的侧视结构示意图；
图4为图1的防针刺结构的后视结构示意图；
图5为本发明的优选实施例的防针刺静脉输液穿刺针的立体结构示意图；
图6为本发明的优选实施例的防针刺静脉输液穿刺针的立体结构示意图，其中针套被移除。
具体实施方式
实施例1
下面结合附图，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的实施例范围之中。
如图1所示，防针刺结构20包含：针座22、针柄21、多个滑件、第一 限位机构、第二限位构件和第三限位机构。
针座22的第一端用于固定针头30。
针柄21固定于针座22的第二端。
多个滑件为两端开口的筒形并且相互嵌套，最里层的滑件可滑动地套设于针座22上，多个滑件在滑动方向上的总长度大于针头30的长度。滑件的数量可以根据实际需要来设定，比如设置三个或三个以上的滑件，只要这些滑件在滑动方向上的总长度大于针头30的长度。这里的滑动指的是在针头30的轴心的方向上的位移。在本实施例中，滑件的数量为两个，分别为第一滑件23和第二滑件24。第一滑件23可滑动地套设于针座22外，第二滑件24可滑动地套设于第一滑件23外。
如图2-4所示，第一滑件23的侧边上设置有第一平滑面231，第二滑件24的侧边上设置有第二平滑面241，第一平滑面231平行于第二平滑面241。
第二滑件24侧边上还设置有操作部242，操作部242设置在第二平滑面241的相反侧，操作部242为向内凹陷的弧形表面并且能够防滑。
针座22的侧边上设置有相反的两个第三平滑面221，两个第三平滑面221均平行于第一滑件23，并且平行于针头30的轴心。
这些平滑面的设置使得防针刺结构20的总体横截面积缩小，当多个滑件收缩，针头30露出时，针头30可以更贴近患者的皮肤。
第一限位机构设置于多个滑件和针座22，第一限位机构能够限制最里层的滑件相对于针座22的滑动，并且能够限制多个滑件之间的相互滑动。
在本实施例中，第一限位机构包含六个卡槽25和三个卡扣26。
针座22的侧边上设置有沿着针座22的圆周方向排列的两组卡槽，每组卡槽包含沿着针头30的轴心的方向排列的两个卡槽25，两个卡槽25分别设置在针座22的两端。
第一滑件23的侧边上设置有沿着针头30的轴心的方向排列的两个卡槽25。
第一滑件23的侧边上还设置有沿着第一滑件23的圆周方向排列的两个卡扣26，两个卡扣26设置在第一滑件23的靠近针柄21的一端。
第二滑件24的靠近针柄21的一端设置有一个卡扣26。
卡扣26能够与卡槽25接合，从而限制第一滑件23相对于针座22的滑动和第二滑件24相对于第一滑件23的滑动。
卡槽25包含相交的垂直面和倾斜面，垂直面垂直于针头30的轴心，倾斜面从垂直面的底部向远离针头30的轴心的方向倾斜，卡扣26朝向针头30的轴心偏压。
第二限位机构，第二限位机构设置于针柄21和最里层的滑件，第二限位机构能够限制最里层的滑件相对于针柄21的转动。
第二限位机构包含相互适配的凸起232和凹陷211，凸起232设置在第一滑件23中的一个上，凹陷211设置在针柄21上，凸起232能够与凹陷211接合，从而限制第一滑件23相对于针柄21的转动。当然，凸起232和凹陷211的设置位置可以互换，凸起232可以设置在针柄21上，凹陷211可以设置第一滑件23上。
第三限位机构设置在针座22、第一滑件23和第二滑件24上，第三限位机构用于在卡槽25与卡扣26接合后，防止第一滑件23、第二滑件24在拉伸力的作用下脱出。在本实施例中，卡槽25和卡扣26设置为在拉伸力的作用下滑件容易向展开的方向运动，但是却不能退回。因此，设置有第三限位机构，使得滑件和针座22不能相互分离。但是，只要第一限位构件设置成在滑件完全展开后，使得滑件之间和滑件与针座22之间完全锁定，也可以不设置第三限位机构。
第三限位机构包含多个环形向内突出部和多个环形向外突出部；
针座22的第一端设置有一个环形向外突出部；
第一滑件23的远离针座22的一端设置有一个环形向外突出部；
第一滑件23和第二滑件24的靠近针座22的一端分别设置有一个环形 向内突出部；
设于第二滑件24的环形向内突出部的内径小于设于第一滑件23的环形向外突出部的外径，设于第一滑件23的环形向内突出部的内径小于设于针座22的环形向外突出部的外径。
如图5和6所示，防针刺静脉输液穿刺针10包含针头30、如上所述的防针刺结构20、软管40和针套50。针头30固定于针座22的第一端，软管40套设于针座22的第二端，针座22中设有输液通道，针头30和软管40均与输液通道连通，针套50覆盖针头30。
下面描述防针刺静脉输液穿刺针10的操作方法。
在未使用前，针套50覆盖针头30，第一滑件23和第二滑件24处于完全收缩状态，第一滑件23的凸起232接合手柄的凹陷211，第一滑件23的两个卡扣26卡合于针座22的第二端的卡槽25，第二滑件24的卡扣26卡合于第一滑件23的靠近针柄21的一端的卡槽25。图5示意了防针刺结构20完全收缩的状态。
在使用时，拔去针套50，然后针头30***患者皮肤进行输液。当输液结束后，需要拔出针头30时，在一边拔出针头30的同时，通过操作部242拉伸第一滑件23和第二滑件24，使得第一滑件23和第二滑件24朝向完全展开的方向滑动，直到防针刺结构20完全展开而针头30也完全拔出。图1示意了防针刺结构20完全展开的状态。在针头30拔出过程中，针头30被第一滑件23和第二滑件24遮蔽，从而大大降低了刺伤医务人员的风险。
在防针刺结构20完全展开后，如果继续对第二滑件24施加拉伸力，环形向内突出部将会抵接环形向外突出部，使得第一滑件23不能脱离针座22，第二滑件24也不能脱离第一滑件23。而卡扣26与卡槽25的接合也使得第一滑件23和第二滑件24都不能收缩。
在本发明的描述中，需要理解的是，术语“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或 位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
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作出多种变更或修改，但这些变更和修改均落入本发明的保护范围。

Claims (11)

  1. 一种防针刺结构，其特征在于，其包含：
    针座，所述针座的第一端用于固定针头；
    针柄，所述针柄固定于所述针座的第二端；
    多个滑件，多个所述滑件为两端开口的筒形并且相互嵌套，最里层的所述滑件可滑动地套设于所述针座上，多个所述滑件在滑动方向上的总长度大于所述针头的长度；
    第一限位机构，所述第一限位机构设置于多个所述滑件和所述针座，所述第一限位机构能够限制最里层的所述滑件相对于所述针座的滑动，并且能够限制多个所述滑件之间的相互滑动；
    第二限位机构，所述第二限位机构设置于所述针柄和最里层的所述滑件，所述第二限位机构能够限制最里层的所述滑件相对于所述针柄的转动。
  2. 如权利要求1所述的防针刺结构，其特征在于，所述防针刺结构包含两个所述滑件，两个所述滑件分别为第一滑件和第二滑件，所述第一滑件可滑动地套设于所述针座外，所述第二滑件可滑动地套设于所述第一滑件外。
  3. 如权利要求2所述的防针刺结构，其特征在于，所述第一滑件的侧边上设置有第一平滑面，所述第二滑件的侧边上设置有第二平滑面，所述第一平滑面平行于所述第二平滑面。
  4. 如权利要求3所述的防针刺结构，其特征在于，所述第二滑件侧边上还设置有操作部，所述操作部设置在所述第二平滑面的相反侧，所述操作部为向内凹陷的弧形表面并且能够防滑。
  5. 如权利要求3或4所述的防针刺结构，其特征在于，所述针座的侧边上设置有相反的两个第三平滑面，两个所述第三平滑面均平行于所述第一滑件，并且平行于所述针头的轴心。
  6. 如权利要求2-5中至少一项所述的防针刺结构，其特征在于，所述第二限位机构包含相互适配的凸起和凹陷，所述凸起设置在所述针柄和所述第一滑件中的一个上，所述凹陷设置在所述针柄和所述第一滑件中的另一个上，所述凸起能够与所述凹陷接合，从而限制所述第一滑件相对于所述针柄的转动。
  7. 如权利要求2-6中至少一项所述的防针刺结构，其特征在于，所述第一限位机构包含六个卡槽和三个卡扣，
    所述针座的侧边上设置有沿着所述针座的圆周方向排列的两组卡槽，每组所述卡槽包含沿着所述针头的轴心的方向排列的两个卡槽，两个所述卡槽分别设置在所述针座的两端，
    所述第一滑件的侧边上设置有沿着所述针头的轴心的方向排列的两个卡槽，
    所述第一滑件的侧边上还设置有沿着所述第一滑件的圆周方向排列的两个卡扣，两个所述卡扣设置在所述第一滑件的靠近所述针柄的一端，
    所述第二滑件的靠近所述针柄的一端设置有一个卡扣；
    所述卡扣能够与所述卡槽接合，从而限制所述第一滑件相对于所述针座的滑动和所述第二滑件相对于所述第一滑件的滑动。
  8. 如权利要求7所述的防针刺结构，其特征在于，所述卡槽包含相交的垂直面和倾斜面，所述垂直面垂直于所述针头的轴心，所述倾斜面从所述垂直面的底部向远离所述针头的轴心的方向倾斜，所述卡扣朝向所述针头的轴心偏压。
  9. 如权利要求8所述的防针刺结构，其特征在于，所述防针刺结构还包含第三限位机构，所述第三限位机构设置在所述针座、所述第一滑件和所述第二滑件上，所述第三限位机构用于在所述卡槽与所述卡扣接合后，防止所述第一滑件、所述第二滑件在拉伸力的作用下脱出。
  10. 如权利要求9所述的防针刺结构，其特征在于，所述第三限位机构 包含多个环形向内突出部和多个环形向外突出部；
    所述针座的第一端设置有一个所述环形向外突出部；
    所述第一滑件的远离所述针座的一端设置有一个所述环形向外突出部；
    所述第一滑件和第二滑件的靠近所述针柄的一端分别设置有一个所述环形向内突出部；
    设于所述第二滑件的所述环形向内突出部的内径小于设于所述第一滑件的所述环形向外突出部的外径，设于所述第一滑件的所述环形向内突出部的内径小于设于所述针座的所述环形向外突出部的外径。
  11. 一种防针刺静脉输液穿刺针，其特征在于，所述防针刺静脉输液穿刺针包含针头、如权利要求1-10中至少一项所述的防针刺结构、软管和针套；
    所述针头固定于所述针座的第一端，所述软管套设于所述针座的第二端，所述针座中设有输液通道，所述针头和所述软管均与所述输液通道连通，所述针套覆盖所述针头。
PCT/CN2016/105651 2016-08-16 2016-11-14 防针刺结构及防针刺静脉输液穿刺针 WO2018032625A1 (zh)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201610676077.XA CN107754048A (zh) 2016-08-16 2016-08-16 防针刺结构及防针刺静脉输液穿刺针
CN201620888833.0U CN206198391U (zh) 2016-08-16 2016-08-16 防针刺结构及防针刺静脉输液穿刺针
CN201610676077.X 2016-08-16
CN201620888833.0 2016-08-16

Publications (1)

Publication Number Publication Date
WO2018032625A1 true WO2018032625A1 (zh) 2018-02-22

Family

ID=61196242

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/105651 WO2018032625A1 (zh) 2016-08-16 2016-11-14 防针刺结构及防针刺静脉输液穿刺针

Country Status (2)

Country Link
TW (1) TWI687248B (zh)
WO (1) WO2018032625A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109847172A (zh) * 2019-01-31 2019-06-07 常州市第二人民医院 一种防针刺内瘘穿刺针
CN114953339A (zh) * 2022-04-28 2022-08-30 佛山市顺德区森灿自动化机械有限公司 采血针组装生产设备

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5573512A (en) * 1990-09-05 1996-11-12 Advanced Protective Injection Systems B.V. Infusion or transfusion needle assembly
CN2803403Y (zh) * 2005-04-25 2006-08-09 林宇岳 输液套针头安全装置
CN2820200Y (zh) * 2005-08-03 2006-09-27 韩晶 密闭式静脉留置针
JP4654102B2 (ja) * 2005-09-29 2011-03-16 テルモ株式会社 プロテクタ及び針セット
CN104288866A (zh) * 2014-10-24 2015-01-21 上海金塔医用器材有限公司 一次性使用防针刺静脉输液穿刺针
CN204181959U (zh) * 2014-10-24 2015-03-04 上海金塔医用器材有限公司 一次性使用防针刺静脉输液穿刺针
CN204411410U (zh) * 2015-01-04 2015-06-24 上海金塔医用器材有限公司 防针刺双翼静脉穿刺针
CN105816936A (zh) * 2015-01-04 2016-08-03 上海金塔医用器材有限公司 防针刺双翼静脉穿刺针

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5573512A (en) * 1990-09-05 1996-11-12 Advanced Protective Injection Systems B.V. Infusion or transfusion needle assembly
CN2803403Y (zh) * 2005-04-25 2006-08-09 林宇岳 输液套针头安全装置
CN2820200Y (zh) * 2005-08-03 2006-09-27 韩晶 密闭式静脉留置针
JP4654102B2 (ja) * 2005-09-29 2011-03-16 テルモ株式会社 プロテクタ及び針セット
CN104288866A (zh) * 2014-10-24 2015-01-21 上海金塔医用器材有限公司 一次性使用防针刺静脉输液穿刺针
CN204181959U (zh) * 2014-10-24 2015-03-04 上海金塔医用器材有限公司 一次性使用防针刺静脉输液穿刺针
CN204411410U (zh) * 2015-01-04 2015-06-24 上海金塔医用器材有限公司 防针刺双翼静脉穿刺针
CN105816936A (zh) * 2015-01-04 2016-08-03 上海金塔医用器材有限公司 防针刺双翼静脉穿刺针

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109847172A (zh) * 2019-01-31 2019-06-07 常州市第二人民医院 一种防针刺内瘘穿刺针
CN114953339A (zh) * 2022-04-28 2022-08-30 佛山市顺德区森灿自动化机械有限公司 采血针组装生产设备
CN114953339B (zh) * 2022-04-28 2024-04-26 佛山市顺德区森灿自动化机械有限公司 采血针组装生产设备

Also Published As

Publication number Publication date
TW201806633A (zh) 2018-03-01
TWI687248B (zh) 2020-03-11

Similar Documents

Publication Publication Date Title
KR101893804B1 (ko) 1회용 찔림방지 정맥수액 천자침
CN104288866B (zh) 一次性使用防针刺静脉输液穿刺针
WO2016062015A1 (zh) 一次性使用防针刺静脉输液针
JPH07185002A (ja) 針保護装置
US7001364B1 (en) Needle safety cap device
CN204181959U (zh) 一次性使用防针刺静脉输液穿刺针
WO2018032625A1 (zh) 防针刺结构及防针刺静脉输液穿刺针
AU2018333537B2 (en) Syringe with locking mechanism
CN206198391U (zh) 防针刺结构及防针刺静脉输液穿刺针
CN204410825U (zh) 防针刺安全采血针
CN204411410U (zh) 防针刺双翼静脉穿刺针
CN204411424U (zh) 防针刺注射器
CN105816189A (zh) 防针刺安全采血针
WO2016107028A1 (zh) 防针刺双翼静脉穿刺针
TW200404014A (en) Medical needle device with shield for reducing needlestick injuries
CN106581824A (zh) 防针刺结构及包含其的注射针
TWI713635B (zh) 針刺裝置
CN105816936B (zh) 防针刺双翼静脉穿刺针
CN203829413U (zh) 安全静脉针
TWM471280U (zh) 安全注射器
CN206198405U (zh) 防针刺结构及包含其的注射针
WO2016107029A1 (zh) 防针刺注射器
CN213466340U (zh) 防***安全针
CN105816941A (zh) 防针刺注射器
CN107754048A (zh) 防针刺结构及防针刺静脉输液穿刺针

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16913380

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16913380

Country of ref document: EP

Kind code of ref document: A1