WO2015169252A1 - 一种单手穿刺的留置针 - Google Patents

一种单手穿刺的留置针 Download PDF

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Publication number
WO2015169252A1
WO2015169252A1 PCT/CN2015/078541 CN2015078541W WO2015169252A1 WO 2015169252 A1 WO2015169252 A1 WO 2015169252A1 CN 2015078541 W CN2015078541 W CN 2015078541W WO 2015169252 A1 WO2015169252 A1 WO 2015169252A1
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Prior art keywords
needle
puncture
catheter
indwelling needle
indwelling
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PCT/CN2015/078541
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English (en)
French (fr)
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卢峰
陶品德
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广州阳普医疗科技股份有限公司
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Publication of WO2015169252A1 publication Critical patent/WO2015169252A1/zh

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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
    • A61M5/14—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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like

Definitions

  • the invention relates to the technical field of indwelling needles, in particular to an indwelling needle for single hand puncture.
  • An indwelling needle is a medical device used for multiple infusion treatments over a period of time.
  • An indwelling needle of the prior art which mainly comprises an indwelling needle catheter, a puncture needle, a needle wing connected to the puncture needle tube, and a catheter seat connected to the indwelling needle catheter, the puncture needle tube being from the other end of the catheter seat
  • the needle tip of the puncture needle tube is just exposed outside the indwelling needle catheter, and a side joint is formed on the side wall of the catheter seat, and the side joint is connected with the infusion set.
  • the puncture needle is pulled out from the catheter socket rear end and the indwelling needle catheter, and the softer catheter portion is left in the patient's blood vessel, and the patient is continuously or through the indwelling needle catheter. Intermittent infusion.
  • the existing indwelling needle due to the problem of structural setting, requires the medical staff to cooperate with both hands during the puncture process, the operation is complicated, and the medical personnel are required to be higher; and before the puncture, the puncture The needle tip of the needle is exposed, and it is very unsafe to contact the person who is easily injured.
  • an object of the present invention is to provide an indwelling needle for single-hand puncture, which simplifies the operation process, improves the convenience of use, and improves the safety of the indwelling needle.
  • the technical solution of the present invention is:
  • An indwelling needle for single-hand puncture comprising an indwelling needle catheter, a puncture needle tube, a needle wing connected to the puncture needle tube, and a catheter seat connected to the indwelling needle catheter, wherein one side of the catheter seat extends to form a joint
  • the needle wing is provided with a first guiding surface for guiding the needle to drive the puncture needle tube to be displaced relative to the side joint, and is sucked back from the indwelling needle catheter.
  • the needle wing is further provided with a limiting member for limiting the moving distance of the puncture needle.
  • the side joint is provided with a second guiding surface, and the second guiding surface is disposed corresponding to the first guiding surface.
  • the puncture needle has a moving distance of 2 to 4 mm.
  • the puncture needle has a moving distance of 3 mm.
  • the limiting member is located on a side of the needle wing away from the puncture needle.
  • the limiting component is a limiting pin or a limiting plate.
  • the first guiding surface and the second guiding surface are curved surfaces.
  • the first guiding surface and the second guiding surface are planes.
  • the first guiding surface forms an angle with the adjacent plane at 120-150 degrees.
  • the present invention provides a single-hand puncture indwelling needle, which comprises an indwelling needle catheter, a puncture needle, a needle wing connected to the puncture needle tube, and a catheter seat connected to the indwelling needle catheter.
  • One side of the catheter socket extends to form a side joint, and the needle wing is provided with a first guiding surface for guiding the needle to drive the puncture needle tube to be displaced relative to the side joint, from the indwelling needle Pump back in the catheter.
  • the needle tip of the puncture needle is housed in the indwelling needle catheter, which is safe and reliable.
  • the single-hand puncture indwelling needle of the invention can realize single-hand operation throughout the puncture, which makes the operation more convenient and quick in puncture; the puncture needle retracting distance is more precise, which is convenient for standardization and work, and improves the work of the medical staff. effectiveness.
  • FIG. 1 is a schematic view showing the overall structure of an indwelling needle according to an embodiment of the present invention
  • Figure 2 is a schematic structural view of the needle wing of Figure 1;
  • Figure 3 is a schematic structural view of the catheter hub of Figure 1;
  • Figure 4 is an initial state diagram of the indwelling needle
  • Figure 5 is a front elevational view of the indwelling needle of Figure 1 prior to puncture;
  • Figure 6 is a plan view of the indwelling needle of Figure 1 before puncture
  • Figure 7 is a side view of the indwelling needle of Figure 1 before puncture;
  • Figure 8 is a front elevational view of the indwelling needle of Figure 1 after puncture;
  • Figure 9 is a plan view of the indwelling needle of Figure 1 after puncture.
  • the single-hand puncture indwelling needle of the present embodiment is composed of a puncture needle tube 1 , an indwelling needle catheter 2 , a catheter hub 3 , a needle wing 4 , a tube clamp 5 , an extension tube 6 , and a joint 7 , wherein the puncture needle tube 1 is connected to the indwelling needle catheter 2, the indwelling needle catheter 2 is connected to the top end of the catheter hub 3, the needle wing 4 is connected to the puncture needle tube 1 and sleeved at the bottom end of the catheter hub 3, and one end of the extension tube 6 and the catheter hub 3 The side ends are connected and the other end is connected to the joint 7.
  • the pipe clamp 5 is clamped on the extension pipe 6.
  • the needle wing 4 includes a connecting mechanism 41 and a wing 42 connected to the connecting mechanism 41.
  • the middle portion of the wing 42 is provided with a first guiding surface 42a, and the edge is provided with a limiting pin 43.
  • the first guiding The surface and the adjacent plane form an angle of 120 to 150 degrees;
  • the connecting mechanism includes a connecting seat 41a and a connecting head 41b disposed on the connecting seat 41a.
  • the outer diameter of the connecting head 41b is smaller than the outer diameter of the connecting seat 41a. .
  • the catheter hub 3 includes a main joint 31 and a side joint connected to the main joint 31.
  • the head 32 has a second guiding surface 33 provided on the side joint 32.
  • the connector 41b of the needle 4 is connected to the bottom of the catheter hub main joint 31.
  • the side joint 32 of the catheter hub 3 is used to connect the extension tube 6.
  • the one-hand piercing indwelling needle, the two guiding faces of the needle wing 4 and the side joint 32 are in contact with each other, and the side joint 31 is in contact with the limiting pin 41.
  • the tip end portion of the puncture needle tube 1 is completely accommodated in the indwelling needle catheter 2, and it is not easy to accidentally injure the contact person.
  • the state of the one-hand puncture indwelling needle of the present embodiment before puncture is as shown in FIG. 5, FIG. 6, and FIG. 7, and the side joint 32 of the catheter hub 3 and the wing 42 of the needle wing 4 are at a certain angle, and the catheter seat
  • the distance L between the bottom edge of the main joint 31 of the 3 and the connecting seat 41a of the needle 4 is 0, and the joint 41b is completely inserted into the bottom of the main joint 31 of the catheter hub 3.
  • the flap 42 of the needle 4, the main joint 31 of the catheter hub 3, and the side joint 32 are pinched by hand with natural force, and the puncture needle 1 and the indwelling needle catheter 2 penetrate the skin together and penetrate the blood vessel.
  • the connector 41b is gradually exposed until the side joint 32 contacts the limit pin 41.
  • the state at this time is as shown in FIGS. 8 and 9.
  • the distance between the bottom edge of the main joint 31 of the catheter hub 3 and the connecting seat 41a of the needle 4 can accurately reach the preset value L (can be set to 3 mm).
  • the angle ⁇ between the two is 0.
  • the puncture needle 1 is fully withdrawn, the catheter hub 3 is fixed by application to the skin, and the infusion set is connected.
  • the present embodiment can realize one-hand puncture with a relatively simple structure, and the operation is extremely convenient.
  • the limiting component is a limiting pin.
  • a limiting plate may also be provided as the limiting component.

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

Abstract

一种单手穿刺的留置针，包括留置针导管（2）、穿刺针管（1）、与所述穿刺针管连接的针翼（4）、与所述留置针导管连接的导管座（3），所述导管座一侧延伸形成有一侧接头（32），所述针翼上设有第一导引面（42a），用于引导所述针翼带动所述穿刺针管相对于所述侧接头位移，从所述留置针导管中回抽。单手穿刺的留置针能够实现在穿刺时全程单手操作，使得穿刺时操作更加方便、快捷，提高医护人员的工作效率。

Description

一种单手穿刺的留置针
本申请要求于2014年05月09日提交中国专利局、申请号为201410195610.1、发明名称为“一种单手穿刺的留置针”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及留置针技术领域，尤其涉及一种单手穿刺的留置针。
背景技术
留置针是一种用于在一段时间内多次进行输液治疗的医疗器械。现有技术中的留置针，其主要包括留置针导管、穿刺针管、与所述穿刺针管连接的针翼、与所述留置针导管连接的导管座，所述穿刺针管从所述导管座另一端的主接头完全穿入所述留置针导管后，所述穿刺针管的针尖刚好裸露在所述留置针导管外，所述导管座侧壁上延伸形成有一侧接头，所述侧接头与输液器连接。当医护人员使用留置针对患者的血管进行穿刺后，将穿刺针管从导管座后端及留置针导管中拔出，较为柔软的导管部分留置于患者的血管中，通过留置针导管给患者进行连续或间断地输液。
现有技术中留置针的穿刺过程如下：
首先用一只手捏住针翼，将穿刺针管和留置针导管一起穿刺进入血管。见回血后，用另一只手固定导管座，将穿刺针管回抽约3mm。然后保持导管座和针翼相对位置不变，将留置针导管全部送入血管，完成整个穿刺过程，然后，将穿刺针管全部抽出，封闭导管座开口，用敷贴在皮肤上固定导管座，并从侧接口连接输液器输液。从以上的描述可以看出，现有的留置针，由于结构设置的问题，在穿刺过程中需要医护人员两只手进行配合，操作较为复杂，对医护人员要求较高；且在穿刺前，穿刺针管的针尖裸露在外，容易误伤的接触人员，很不安全。
由此可见，如何对现有技术进行改进，提供一种单手穿刺的留置针，简化操作过程，提高使用的方便程度，这是本领域目前需要解决的技术问题。
发明内容
有鉴于此，本发明的目的在于提供一种单手穿刺的留置针，简化操作过程，提高使用的方便程度，提高留置针的安全性。
为解决以上技术问题，本发明的技术方案是：
一种单手穿刺的留置针，包括留置针导管、穿刺针管、与所述穿刺针管连接的针翼、与所述留置针导管连接的导管座，所述导管座一侧延伸形成有一侧接头，所述针翼上设有第一导引面，用于引导所述针翼带动所述穿刺针管相对于所述侧接头位移，从所述留置针导管中回抽。
优选地，所述针翼上还设有用于限制所述穿刺针管移动距离的限位部件。
优选地，所述侧接头上设有第二导引面，所述第二导引面与所述第一导引面对应设置。
优选地，所述穿刺针管的移动距离为2～4mm。
优选地，所述穿刺针管的移动距离为3mm。
优选地，所述限位部件位于所述针翼远离所述穿刺针管的一侧。
优选地，所述限位部件为限位销钉或限位板。
优选地，所述第一导引面和第二导引面为弧形面。
优选地，所述第一导引面和第二导引面为平面。
优选地，在所述针翼上，所述第一导引面与相邻平面所成夹角为120～150度。
与现有技术相比，本发明提供的一种单手穿刺的留置针，由于包括留置针导管、穿刺针管、与所述穿刺针管连接的针翼、与所述留置针导管连接的导管座，所述导管座一侧延伸形成有一侧接头，所述针翼上设有第一导引面，用于引导所述针翼带动所述穿刺针管相对于所述侧接头位移，从所述留置针导管中回抽。所述留置针处于初始状态时，穿刺针的针尖收纳于所述留置针导管中，安全可靠。穿刺时，用手以自然力捏住针翼的翼板、导管座，将穿刺针管和留置针导管一起穿透皮肤刺入血管，见回血后，加大力量挤压针翼和导管座，在第一导引面的作用下，使得针翼向后滑动，穿刺针管逐步回抽，然后保持导管座与针翼的相对位置不变，将留置针导 管全部送入人体血管。穿刺过程完成，且整个过程为单手操作。由此可见，本发明的单手穿刺的留置针能够实现在穿刺时全程单手操作，使得穿刺时操作更加方便、快捷；穿刺针管回抽距离更加精准，便于标准化做业，提高医护人员的工作效率。
附图说明
图1为本发明实施例留置针的整体结构示意图；
图2为图1中针翼的结构示意图；
图3为图1中导管座的结构示意图；
图4为留置针的初始状态图；
图5为图1中留置针穿刺前的主视图；
图6为图1中留置针穿刺前的俯视图；
图7为图1中留置针穿刺前的侧视图；
图8为图1中留置针穿刺后的主视图；
图9为图1中留置针穿刺后的俯视图。
具体实施方式
为了使本领域的技术人员更好地理解本发明的技术方案，下面通过具体实施例对本发明作进一步的详细说明。
如图1所示，本实施例的单手穿刺的留置针，由穿刺针管1、留置针导管2、导管座3、针翼4、管夹5、延长管6、接头7组成，其中穿刺针管1与留置针导管2连接，留置针导管2与导管座3的顶端连接，针翼4与所述穿刺针管1连接并套设在导管座3的底端，延长管6的一端与导管座3的侧端连接，另一端与接头7连接。管夹5夹在延长管6上。
如图2所示，针翼4包括连接机构41、与连接机构41连接的翼板42，翼板42的中部设置有第一导引面42a，边缘设置一个限位销钉43，第一导引面和与之相邻的平面所成的夹角为120～150度；连接机构包括连接座41a、设置在连接座41a上的连接头41b，连接头41b的外周直径小于连接座41a的外周直径。
如图3所示，导管座3包括主接头31以及连接在主接头31旁的侧接 头32，侧接头32上设有第二导引面33。针翼4的连接头41b与导管座主接头31的底部连接。导管座3的侧接头32用于连接延长管6。
如图4所示，初始状态的单手穿刺留置针，针翼4和侧接头32的两个导引面相互接触，侧接头31接触限位销钉41。此时穿刺针管1的针尖部完全被收容于所述留置针导管2中，不容易误伤到接触人员。
本实施例的单手穿刺的留置针的使用过程如下：
本实施例的单手穿刺的留置针在穿刺前的状态如图5、图6、图7所示，导管座3的侧接头32和针翼4的翼板42呈一定的夹角，导管座3的主接头31的底部边缘与针翼4的连接座41a两者之间距离L为0，连接头41b完全插入导管座3的主接头31的底部。穿刺时，用手以自然力捏住针翼4的翼板42、导管座3的主接头31和侧接头32，将穿刺针管1和留置针导管2一起穿透皮肤刺入血管。
见回血后，加大力量挤压针翼4的翼板42和侧接头32，使得第一导引面和第二导引面相互接触并挤压，导致针翼4向后滑动(或导管座3向前滑动)，连接头41b逐渐露出，直到侧接头32接触限位销钉41。此时的状态如图8和图9所示，导管座3的主接头31的底部边缘与针翼4的连接座41a两者之间距离可准确达到预设值L(可设定为3mm)，两者之间的夹角α为0。
然后，保持导管座3与针翼4的相对位置不变，将留置针导管2全部送入人体血管。穿刺过程完成，且整个过程为单手操作。
最后，将穿刺针管1全部抽出，用敷贴在皮肤上固定导管座3，并连接输液器。
由以上描述可知，本实施例以较为简单的结构就能实现单手穿刺，操作极为方便。
本实施例中，限位部件为限位销钉，在其他实施例中，也可设置限位板作为限位部件。
以上仅是本发明的优选实施方式，应当指出的是，上述优选实施方式不应视为对本发明的限制，本发明的保护范围应当以权利要求所限定的范围为准。对于本技术领域的普通技术人员来说，在不脱离本发明的精神和 范围内，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (10)

  1. 一种单手穿刺的留置针，包括留置针导管、穿刺针管、与所述穿刺针管连接的针翼、与所述留置针导管连接的导管座，所述导管座一侧延伸形成有一侧接头，其特征在于，所述针翼上设有第一导引面，用于引导所述针翼带动所述穿刺针管相对于所述侧接头位移，从所述留置针导管中回抽。
  2. 如权利要求1所述的单手穿刺的留置针，其特征在于，所述针翼上还设有用于限制所述穿刺针管移动距离的限位部件。
  3. 如权利要求1所述的单手穿刺的留置针，其特征在于，所述侧接头上设有第二导引面，所述第二导引面与所述第一导引面对应设置。
  4. 如权利要求1所述的单手穿刺的留置针，其特征在于，所述穿刺针管的移动距离为2～4mm。
  5. 如权利要求4所述的单手穿刺的留置针，其特征在于，所述穿刺针管的移动距离为3mm。
  6. 如权利要求2所述的单手穿刺的留置针，其特征在于，所述限位部件位于所述针翼远离所述穿刺针管的一侧。
  7. 如权利要求2或6所述的单手穿刺的留置针，其特征在于，所述限位部件为限位销钉或限位板。
  8. 如权利要求3所述的单手穿刺的留置针，其特征在于，所述第一导引面和第二导引面为弧形面。
  9. 如权利要求3所述的单手穿刺的留置针，其特征在于，所述第一导引面和第二导引面为平面。
  10. 如权利要求1所述的单手穿刺的留置针，其特征在于，在所述针翼上，所述第一导引面与相邻平面所成夹角为120～150度。
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