WO2018209488A1 - 一种拉绳限位式安全型留置针穿刺组件 - Google Patents

一种拉绳限位式安全型留置针穿刺组件 Download PDF

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Publication number
WO2018209488A1
WO2018209488A1 PCT/CN2017/084307 CN2017084307W WO2018209488A1 WO 2018209488 A1 WO2018209488 A1 WO 2018209488A1 CN 2017084307 W CN2017084307 W CN 2017084307W WO 2018209488 A1 WO2018209488 A1 WO 2018209488A1
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WO
WIPO (PCT)
Prior art keywords
needle
rope
needle tip
shielding member
puncture assembly
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PCT/CN2017/084307
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English (en)
French (fr)
Inventor
陈永曦
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福建省百仕韦医用高分子股份有限公司
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Application filed by 福建省百仕韦医用高分子股份有限公司 filed Critical 福建省百仕韦医用高分子股份有限公司
Priority to PCT/CN2017/084307 priority Critical patent/WO2018209488A1/zh
Priority to CN201780090650.1A priority patent/CN110582318A/zh
Publication of WO2018209488A1 publication Critical patent/WO2018209488A1/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
    • A61M25/00—Catheters; Hollow probes

Definitions

  • the invention relates to a safety type indwelling needle tube puncture assembly, in particular to a cord-retaining type safety indwelling puncture assembly.
  • the prior art safety type indwelling needle puncture assembly is generally composed of a connecting member, a needle tip stopping member, a needle tip shield, an operating handle, a needle tube 6, and a needle hub 7.
  • the tip shield is used to shield the needle after the needle is removed, to protect it from exposure, to prevent puncture or environmental pollution.
  • the needle seat needs to be telescopically slid relative to the needle tip shielding member and the limit position after the telescopic position is achieved by the buckle device, and the needle tip shielding member and the needle holder also need to complete the disengagement connection with the needle tube seat.
  • the structures of the limit and the disconnection are respectively set, the structure is complicated, and the buckle device also has a phenomenon of malfunctioning and tripping.
  • the object of the present invention is to overcome the deficiencies in the prior art, and to provide a cord-retaining type safety indwelling puncture assembly which is simple in structure and more effective in limiting position.
  • the object of the present invention is achieved by the following route.
  • the utility model relates to a cord-retaining type safety type indwelling puncture assembly, which comprises a needle tip stopping member, a needle tip shielding member, an operating handle, a needle tube and a needle seat, wherein the needle tip shielding member and the catheter seat are connected in a breakable manner, and after the needle is removed, the needle tip shielding member
  • the structural point of the detachment from the catheter hub is that it further includes a cord limiting device including a drawstring, one end of the pull cord is connected to the needle seat, the other end is connected with the needle tip shielding member, and the pull cord is plugged in the handle cavity and the needle tip.
  • a cylindrical annular cavity between the shields, the stretched length of the drawstring being greater than the stroke of the tip of the needle retracting to the rear end of the needle tip stop member.
  • the operating handle When the indwelling needle is successfully inserted into the tube, the operating handle is pulled backward to drive the needle tube to gradually withdraw the catheter assembly, and the shielding member gradually slides out of the inner cavity of the operating handle, and the pulling rope is gradually unfolded, and when the pulling rope is moved backward with the handle Straight, the operating handle is moved backwards, and the pulling rope pulls the shielding member, and the needle tip shielding member is separated from the catheter seat, and the operation is completed, so that the needle tip is restricted in the shielding member without being exposed due to the restriction of the pulling rope, and the needle tube is to be The front chin is blocked by the needle tip stopping member in the shielding member and does not pass through the connecting member, thereby achieving the purpose of preventing needle sticking.
  • the object of the present invention can also be achieved by the following means.
  • the rope cord limiting mechanism further comprises two rope end fixing members, wherein the two ends of the rope are respectively fixed in the glue end holes and the slots of the rope end fixing parts, and the rope end fixing parts are respectively locked back to the back end of the needle tip shielding member. And the head end of the needle seat is glued.
  • the rope end fixing member is a cylindrical member, and a large U-shaped groove is formed at one end of the cylindrical member, the U-shaped groove cavity and the needle tip shielding member
  • the tail end and the front end of the needle holder are inserted and fixed, so that the cylindrical member has an insertion end and a bottom end, and the bottom end of the column member, that is, the other end, a small long U-shaped groove is formed for the cylindrical member.
  • a cable end fixing hole is disposed at a distance parallel to the axis of the cylinder member, and the fixing hole is penetrated by the bottom end surface
  • a rectangular or arc-shaped first rope groove and a second rope groove are respectively disposed at two ends of the fixing hole, one end groove port is connected with the fixing hole, and the other end is passed out of the column outer wall.
  • the first rope groove is used for folding the rope head when the rope is fixed
  • the second rope groove is used for assembling the rope when the rope head fixing member is back to back.
  • the first rope groove is used for folding the rope head when the rope is fixed, so that the fixing is more firm and reliable, and the second rope groove is used for assembling the rope when the rope head fixing member is back to back, so that the two can be closely fitted. So as not to affect the distance between the needle and the catheter.
  • the needle seat is composed of a cap-shaped outer casing and a needle-shaped round boss.
  • the intermediate hole of the needle-shaped round boss is composed of a needle-punching hole and a dispensing hole.
  • the tip shield is coupled to the catheter hub by a connector that is releasably coupled to the catheter hub.
  • breakaway connection is either a snap connection or a dispensing connection.
  • the present invention has the following advantages over the prior art: the structure is simpler and the limit is more effective and effective.
  • FIG. 1 is a schematic view of an indwelling needle using a drawstring type safety type indwelling puncture assembly according to the present invention
  • FIG. 2 is a schematic cross-sectional view of an indwelling needle using a cord-retaining type safety indwelling puncture assembly according to the present invention
  • Figure 3 is a perspective view of the connector
  • Figure 4 is a perspective cross-sectional view of the connector
  • Figure 5 is a perspective view of the tip shield
  • Figure 6 is a perspective cross-sectional view of the tip shield
  • Figure 7 is a perspective view of the cord end fixing member
  • Figure 8 is a perspective view of the cord end fixing member
  • Figure 9 is a schematic front view of the handle
  • Figure 10 is a left side view of the handle
  • Figure 11 is a perspective view of the needle holder
  • Figure 12 is a perspective, perspective, perspective view of the hub
  • Figure 13 is a schematic view after the needle is withdrawn
  • Fig. 14 is a partial enlarged view of Fig. 13;
  • a cord-retaining safety type indwelling puncture assembly includes a needle puncture assembly connecting member 1, a needle tip stopping member 2, a needle tip shielding member 3, an operating handle 4, and a cord limiting mechanism 5,
  • the fixing members are respectively folded back to the rear end of the needle tip shielding member 3 and the front end of the needle holder 7 and glued.
  • the connector 1 comprises an elliptical post rear section 1.1 and a cylindrical front section 1.2.
  • the outer peripheral wall of the front section 1.2 has a snap projection 1.2.1 and a corresponding portion of the catheter socket.
  • the inner cavity of the rear section 1.1 is a step type, the smaller inner cavity 1.2.2 is used for mounting the needle tip stopping member 2, and the larger inner cavity 1.2.5 is for fixing with the front end of the needle tip shielding member.
  • the tip shield 3 is a stepped rod-shaped body having a large front end, wherein the mouth end 3.1 is for attachment to the connector 1, and the front cavity 3.1.2 is for containing the needle tip. member.
  • the rear section 3.2 is an elongated rod that extends through the pinhole 3.2.1.
  • the cord end fixing member 5.1 is a cylindrical member, and a large U-shaped groove 5.1.1 is opened at one end of the cylindrical member, and the U-shaped groove and the tip end of the needle tip shielding member 3 and the needle holder are opened.
  • the head end of the 7 card is inserted and fixed, so that the cylindrical member has an insertion end and a bottom end, and the bottom end of the column member, that is, the other end, a small long U-shaped groove 5.1.3 is provided for the cylindrical member and When the trailing end of the tip shield 3 and the head end of the boss of the hub 7 are inserted and fixed, the needle can be avoided.
  • a cable end fixing hole 5.1.2 is disposed at a distance parallel to the axis of the column member, and the fixing hole penetrates from the bottom end surface to the bottom surface of the large U-shaped groove, and a rectangular or circular arc shape is respectively arranged at both ends of the fixing hole.
  • Rope groove 5.1.2.1, 5.1.2.2, one end slot port is connected with the fixing hole, the other end is out of the outer wall of the column, and the slot 5.1.2.1 is used to fold the rope head when the cable is glued, so that the fixing is more firm and reliable.
  • the groove 5.1.2.2 is used for assembling the rope when the rope head fixing member is back to back, so that the two can be closely fitted, so as not to affect the distance between the needle tube and the catheter.
  • the handle consists of a body 4.2 and a wrap 4.1.
  • the body 4.2 has an elliptical ring shape that matches the rear section 1.1 of the elliptical column of the connector 1.
  • the inner cavity is sleeved with the rear section 1.1 of the elliptical column of the connecting piece 1.
  • the needle hub 7 is composed of a cap-shaped outer casing 7.1 and a needle-shaped round boss 7.2.
  • the intermediate hole of the needle-grooving boss 7.2 is composed of a needle-pinning hole 7.2.1 and a dispensing hole 7.2.2.
  • the drawstring limiting mechanism is prepared, and a length of the drawstring 5.2 is cut according to the required length, and the two ends of the drawstring are respectively passed from the back of the rope end fixing member 5.1 through the rope end fixing hole 5.1.2, and the rope head is folded.
  • the glue is inserted into the rope end fixing hole and the rope groove, and the rope is fixed.
  • the needle fixing end is sequentially passed through the connecting member 1, the needle tip stopping member 2, the needle tip shielding member 3, and then the connecting member is pressed and fastened with the needle tube shielding member, and the needle tip stopping member is accommodated in the two.
  • the needle tube is inserted into the needle hole of the needle seat and fixed.
  • the rope end fixing members of the rope limiting mechanism are respectively inserted and fixed with the rear end of the needle tip shielding member and the head end of the boss of the needle holder 7, and glued to the glue.
  • the components are gathered along the needle tube toward the needle seat, and then the pull rope is folded up and tightly adhered to the outer surface of the needle tip shield, and then the entire assembly is taken from the rear end of the operating handle 4, first the needle The tube is first inserted into the inner cavity of the handle, and the other members are sequentially inserted into the inner cavity until the needle housing and the operating handle sheath are touched, and the end surface of the handle is in contact with the inner bottom surface of the needle seat, and the two parts are glued and fixed, the needle piercing assembly is assembled, and finally the puncture is completed.
  • the component needle tube passes through the inner cavity of the catheter assembly, and the needle tip exposes the tip end of the catheter.
  • the inner cavity of the rear end of the catheter seat is inserted into the front protrusion of the connecting piece, and the groove on the inner cavity is fastened with the convex card on the boss, and the indwelling needle is assembled.
  • the operating handle When the indwelling needle is successfully inserted into the tube, the operating handle is pulled backward to drive the needle tube to gradually withdraw the catheter assembly, and the connecting member and the shielding member are gradually slipped out of the inner cavity of the operating handle, and the pulling rope is gradually unfolded, when the pulling rope is followed by the handle
  • the operating handle When moving straight, the operating handle is moved backwards, and the pulling rope is pulled to pull the shielding member and the connector assembly, the connecting member is separated from the catheter seat, and the operation is completed, so that the needle tip is restricted in the shielding member due to the restriction of the pulling rope.
  • the needle tube Exposed, and the needle tube is forwardly blocked by the connecting piece and the needle tip stopping member in the shielding member, and does not pass through the connecting member, thereby achieving the purpose of preventing needle sticking.

Abstract

一种安全型留置针针管穿刺组件，为一种拉绳限位式安全型留置穿刺组件，包括针尖止出构件（2）、针尖遮蔽件（3）、操作手柄（4）、针管（6）和针座（7），针尖遮蔽件（3）与导管座以可挣脱方式连接，撤针后，针尖遮蔽件（3）与导管座脱离，其结构要点在于：还包括一种含有拉绳（5.2）的拉绳限位装置，拉绳（5.2）一端与针座（7）连接，另一端与针尖遮蔽件（3）连接，拉绳（5.2）塞设于手柄内腔与针尖遮蔽件（3）之间的柱环形空腔，拉绳（5.2）的伸展长度大于针尖后退至针尖止出构件（2）后端的行程。该留置针针管穿刺组件相比现有技术具有如下优点：结构较简单，限位较牢靠有效。

Description

一种拉绳限位式安全型留置针穿刺组件 技术领域
本发明涉及一种安全型留置针针管穿刺组件，特别是一种拉绳限位式安全型留置穿刺组件。
背景技术
现有技术中的安全型留置针针管穿刺组件通常由连接件、针尖止出构件、针尖遮蔽件、操作手柄、针管6和针座7组成。针尖遮蔽件用于遮蔽撤针后的针管，保护其不外露，以防止刺伤或污染环境。撤针过程中，针座需要相对针尖遮蔽件伸缩滑动并通过卡扣装置实现伸缩到位后的限位，针尖遮蔽件以及针座也需要完成与针管座的脱离连接。现有技术中，限位和脱离连接的构造分别设置，结构较复杂，而且卡扣装置也时有误动作脱扣的现象发生。
发明构成
本发明的目的在于克服现有技术中的不足之处，而提供一种结构较简单，限位较牢靠有效的一种拉绳限位式安全型留置穿刺组件。
本发明的目的是通过以下途径来实现的。
一种拉绳限位式安全型留置穿刺组件，包括针尖止出构件、针尖遮蔽件、操作手柄、针管和针座，针尖遮蔽件与导管座以可挣脱方式连接，撤针后，针尖遮蔽件与导管座脱离，其结构要点在于：还包括一种含有拉绳的拉绳限位装置，拉绳一端与针座连接，另一端与针尖遮蔽件连接，拉绳塞设于手柄内腔与针尖遮蔽件之间的柱环形空腔，拉绳的伸展长度大于针尖后退至针尖止出构件后端的行程。
当留置针穿刺置管成功后，往后拉动操作手柄移动，带动针管逐渐撤出导管组件，遮蔽件也逐渐滑出操作手柄内腔，拉绳也逐渐展开，当拉绳随手柄后移而拉直时，操作手柄再后移，带动拉绳拉动遮蔽件，针尖遮蔽件件与导管座分离，操作完成，这样由于拉绳限制，将针管针尖限制在遮蔽件内而不外露，而针管要往前窜受到遮蔽件内针尖止出构件阻挡而不会穿出连接件，达到防针刺伤目的。
本发明的目的还可以通过以下途径来实现。
拉绳限位机构还包括两个绳端固接件，拉绳两端分别固接于绳端固接件胶接孔及槽中，绳端固接件分别背对背卡入针尖遮蔽件的尾端和针座的头端并胶接。
绳端固接件是一柱体件，在柱体件一端开设一大型U型槽，U型槽腔与针尖遮蔽件 的尾端和针座的前端卡插固接，如此柱体件有了一插入端和底端，柱体件底端，亦即另一端开设一小长型U型槽，用于柱体件与针尖遮蔽件的尾端和针座凸台的前端卡插固接装配时，避开针管，与柱体件轴线平行一定距离处设置一拉绳端固接孔，固接孔由底端面贯穿至大型U型槽底面，并在固接孔两端分别设置一矩形或圆弧形的第一绳槽和第二绳槽，一端槽端口与固接孔联通，另一端穿出柱体外壁，第一绳槽用于拉绳胶固接时折别绳头，第二绳槽用于装配时绳头固接件背靠背时收纳拉绳。
第一绳槽用于拉绳胶固接时折别绳头，使得固接更加牢固可靠，第二绳槽用于装配时绳头固接件背靠背时收纳拉绳，使得两者能紧密贴合，以免影响针管与导管间的莱距离。
针座由盖状外壳和植针圆凸台构成，植针圆凸台中间孔腔由植针孔和点胶穴构成。
针尖遮蔽件通过一种连接件与导管座连接，连接件与导管座以可挣脱方式连接。
所说的可挣脱方式连接或者是卡扣连接或者是点胶连接。
综上所述，本发明相比现有技术具有如下优点：结构较简单，限位较牢靠有效。
附图说明
图1是使用本发明所述一种拉绳限位式安全型留置穿刺组件的留置针示意图；
图2是使用本发明所述一种拉绳限位式安全型留置穿刺组件的留置针剖视示意图；
图3是连接件立体示意图；
图4是连接件立体剖视图；
图5是针尖遮蔽件的立体示意图；
图6是针尖遮蔽件的立体剖视图；
图7是绳端固接件的立体示意图；
图8是绳端固接件的立体示意图；
图9是手柄示意主视图；
图10是手柄左视图；
图11是针座立体示意图；
图12是针座立体立体剖视图；
图13是撤针后的示意图；
图14是图13的局部放大图。
下面结合附图对本发明进行更详尽的描述。
具体实施方式
最佳实施例：
参照图1、图2，一种拉绳限位式安全型留置穿刺组件，包括针管穿刺组件连接件1、针尖止出构件2、针尖遮蔽件3、操作手柄4、拉绳限位机构5、针管6和针座7，其中拉绳限位机构由两个绳端固接件5.1与拉绳5.2组成，拉绳两端分别固接于绳端固接件胶接孔及槽中，绳端固接件背对背分别卡入针尖遮蔽件3的尾端和针座7的前端并胶接。
参照图3和图4，连接件1包括椭圆柱后段1.1和圆柱形前段1.2。前段1.2外周壁上具有卡扣凸点1.2.1与导管座的对应部分卡扣连接。后段1.1内腔是一阶梯型，较小的内腔1.2.2用于装设针尖止出构件2，较大的内腔1.2.5用于和针尖遮蔽件的前端固接。
参照图5和图6，针尖遮蔽件3是一种阶梯杆状体，前端较大，其中止口端3.1用于与连接件1固接，前内腔3.1.2用于含装针尖止出构件。后段3.2是一细长杆，中间贯穿过针孔3.2.1。
参照图7和图8，绳端固接件5.1：是一柱体件，在柱体件一端开设一大型U型槽5.1.1，U型槽腔与针尖遮蔽件3的尾端和针座7的头端卡插固接，如此柱体件有了一插入端和底端，柱体件底端，亦即另一端开设一小长型U型槽5.1.3，用于柱体件与针尖遮蔽件3的尾端和针座7凸台的头端卡插固接装配时，避开针管。与柱体件轴线平行一定距离处设置一拉绳端固接孔5.1.2，固接孔由底端面贯穿至大型U型槽底面，并在固接孔两端分别设置一矩形或圆弧形绳槽5.1.2.1、5.1.2.2，一端槽端口与固接孔联通，另一端穿出柱体外壁，槽5.1.2.1用于拉绳胶固接时折别绳头，使得固接更加牢固可靠，槽5.1.2.2用于装配时绳头固接件背靠背时收纳拉绳，使得两者能紧密贴合，以免影响针管与导管间的莱距离。
参照图9和图10，手柄由本体4.2和敷翼4.1组成。本体4.2呈一种与连接件1椭圆柱后段1.1匹配的椭圆环柱形。其内腔与连接件1椭圆柱后段1.1套接。
参照图11和图12，针座7由盖状外壳7.1和植针圆凸台7.2构成，植针圆凸台7.2中间孔腔由植针孔7.2.1和点胶穴7.2.2构成。
留置针装配：
首先制备拉绳限位机构，按照所需长度剪切一段拉绳5.2，将拉绳两端分别从绳端固接件5.1背面穿过绳端固接孔5.1.2，并折别绳头于绳槽5.1.2.1中，于绳端固接孔和绳槽中点入胶水，固接拉绳。接着将针管固接端依次穿过连接件1、针尖止出构件2、针尖遮蔽件3，接着将连接件与针管遮蔽件压合扣接，这时针尖止出构件被收容于两者构成的内腔中，再将针管插入针座上植针孔并固接。之后，将拉绳限位机构上绳端固接件分别与针尖遮蔽件后端和针座7凸台的头端卡插固接装配，并点胶水固接。接着将各构件顺着针管往针座方向收拢，然后将拉绳折起理顺紧贴针尖遮蔽件外表面，再接着将整个组件从操作手柄4后端，首先针 管先插入手柄内腔，其它构件顺序塞入内腔，直至针座外壳与操作手柄护套，手柄端面与针座内底面碰触，给两者点胶固接，针管穿刺组件装配完成，最后穿刺组件针管穿过导管组件内腔，针尖露出导管尖端，导管座后端内腔插接于连接件前凸台，内腔上凹槽与凸台上凸卡扣接，留置针装配完成。
留置针使用操作：
当留置针穿刺置管成功后，往后拉动操作手柄移动，带动针管逐渐撤出导管组件，连接件与遮蔽件也逐渐滑出操作手柄内腔，拉绳也逐渐展开，当拉绳随手柄后移而拉直时，操作手柄再后移，带动拉绳拉动遮蔽件与连接件组合体，连接件与导管座分离，操作完成，这样由于拉绳限制，将针管针尖限制在遮蔽件内而不外露，而针管要往前窜受到连接件与遮蔽件内针尖止出构件阻挡而不会穿出连接件，达到防针刺伤目的。
本实施例未述部分与现有技术相同。

Claims (5)

  1. 一种拉绳限位式安全型留置穿刺组件，包括针尖止出构件、针尖遮蔽件、操作手柄、针管和针座，针尖遮蔽件与导管座以可挣脱方式连接，撤针后，针尖遮蔽件与导管座脱离，其特征在于：还包括一种含有拉绳的拉绳限位装置，拉绳一端与针座连接，另一端与针尖遮蔽件连接，拉绳塞设于手柄内腔与针尖遮蔽件之间的柱环形空腔，拉绳的伸展长度大于针尖后退至针尖止出构件后端的行程。
  2. 根据权利要求1所述的一种拉绳限位式安全型留置穿刺组件，其特征在于，拉绳限位机构还包括两个绳端固接件，拉绳两端分别固接于绳端固接件胶接孔及槽中，绳端固接件分别背对背卡入针尖遮蔽件的尾端和针座的头端并胶接。
  3. 根据权利要求1所述的一种拉绳限位式安全型留置穿刺组件，其特征在于，针座由盖状外壳和植针圆凸台构成，植针圆凸台中间孔腔由植针孔和点胶穴构成。
  4. 根据权利要求1所述的一种拉绳限位式安全型留置穿刺组件，其特征在于，针尖遮蔽件通过一种连接件与导管座连接，连接件与导管座以可挣脱方式连接。
  5. 根据权利要求4所述的一种拉绳限位式安全型留置穿刺组件，其特征在于，所说的可挣脱方式连接或者是卡扣连接或者是点胶连接。
PCT/CN2017/084307 2017-05-15 2017-05-15 一种拉绳限位式安全型留置针穿刺组件 WO2018209488A1 (zh)

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