CN104043161A - Straight-type indwelling needle - Google Patents

Straight-type indwelling needle Download PDF

Info

Publication number
CN104043161A
CN104043161A CN201410295935.7A CN201410295935A CN104043161A CN 104043161 A CN104043161 A CN 104043161A CN 201410295935 A CN201410295935 A CN 201410295935A CN 104043161 A CN104043161 A CN 104043161A
Authority
CN
China
Prior art keywords
catheter
indwelling needle
cavity
needle
straight
Prior art date
Application number
CN201410295935.7A
Other languages
Chinese (zh)
Inventor
陈伟权
Original Assignee
陈伟权
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
Application filed by 陈伟权 filed Critical 陈伟权
Priority to CN201410295935.7A priority Critical patent/CN104043161A/en
Publication of CN104043161A publication Critical patent/CN104043161A/en

Links

Abstract

A straight-type indwelling needle comprises an indwelling needle base and an indwelling needle hose. The lower portion of a cavity of the indwelling needle base is provided with a sealing plug made of soft elastic medical materials. The cavity of the indwelling needle is internally provided with a hard hollow liquid guiding rod which can penetrate through the sealing plug in an insertion mode, stretches into the bottom of the cavity of the indwelling needle base and is made of medical materials. The upper portion of the hard hollow liquid guiding rod is communicated with an externally-connected infusion device. According to the straight-type indwelling needle, due to the fact that the structure that the sealing plug is combined with the liquid guiding rod is ingeniously adopted, the sealing plug can be utilized for reliably sealing and isolating the indwelling needle hose and the bottom of the cavity of the indwelling needle base, it is ensured that the phenomenon that blood backflows to the exterior of the cavity of the indwelling needle base is avoided after a puncture needle is pulled out when puncturing is completed, cross infection of a medical worker and a patient is eliminated, the medical worker can pull out the puncture needle with one hand, labor intensity of the medical worker is reduced, and pressing pain and damage to blood vessels of the patient are relieved. The straight-type indwelling needle is simple and reliable in structure and high in practicability, and facilitates promotion and popularization.

Description

一种直型留置针 A direct-type indwelling needle

技术领域 FIELD

[0001] 本发明涉及一种留置针,特别是一种无输液针的直型留置针,属于医疗器械技术领域。 [0001] The present invention relates to an indwelling needle, in particular a non-straight needle infusion catheter, a medical device technical field.

背景技术 Background technique

[0002] 现有的两种留置针,一种是直型留置针(或叫笔杆型留置针),另一种是Y型留置针。 [0002] Two conventional indwelling needle A is straight indwelling needle (indwelling needle type pen or called), the other is a Y-type catheter. 其中,直型留置针在输液过程中存在如下缺点:一是连接输液器时都要将输液针插入到留置针座腔体底部,而且留置针座腔体是敞口的,容易污染留置针腔体;二是在拔出穿刺针后会出现血液回流的现象,容易造成医护人员和病人交叉感染;三是不能单手操作,要用手压住注射部位血管防止血液回流,而穿刺针为硬质体,容易损伤和压痛病人血管;四是要抗凝剂封管且必须每八小时一次,不适用于凝血阻碍患者;五是二次输液时通过在留置针座上戴上肝素帽,用输液针插到留置针腔体,《护理管理规范》规定利器污染后,需要专用的利器盒收集,增加护理人员的工作强度和存在损伤工作人员的可能性,也不符合世界卫生组织(WHO)的要求。 Wherein the presence of straight catheter during the infusion disadvantage: the infusion needle to be inserted into the bottom of the cavity indwelling needle hub when connecting one infusion, and the catheter hub cavity is open easily contaminated lumen catheter Second occurs after the puncture needle is pulled out phenomenon of backflow of blood, the medical staff and patients likely to cause cross-infection;; body three-handed operation is not to hand to suppress the injection site to prevent the backflow of blood vessels, while the needle is hard mass, easy to damage the patient's blood vessel and tenderness; four anticoagulant catheter lock is to be once and is not suitable for patients with coagulation impede every eight hours; five heparin cap is put in the infusion catheter through the secondary seat, with infusion needle catheter is inserted into the cavity, "care management practices" provisions of the weapon contamination, need special sharps container collection, increase the intensity of work and the possibility of damage nurses staff does not conform to World Health Organization (wHO) requirements. Y型留置针虽然可以做到无针输液的要求,但是由于Y型留置针连接较长的输液导管,不但影响了患者的肢体活动,患者在日常活动中稍有不慎就容易碰撞、牵扯引起疼痛,而且不易固定,容易弯曲,造成虹吸现象,使血液被吸到留置软管中形成血栓,当血液返流至导管时会形成长条型血栓导致堵管,患者需要重新穿刺,医疗成本高,也加大了护士的工作量,且增加了血栓进入患者体内的风险,而且血液回流至导管时,会引起患者心理恐慌,增加患者心理负担。 Although the Y-shaped catheter infusion needle can do No, but because of Y-type catheter connected to a longer infusion catheter, not only affects the patient's physical activity, patients are likely to impact the slightest mistake in their daily activities, causing involved pain, and easily fixed, is easily bent, causing the siphon phenomenon, the blood is drawn into the hose indwelling thrombosis, blood reflux into the catheter when a long bar formed thrombus formation caused plugging, patients need to puncture, high medical costs , also increased the workload of nurses and increase the risk of blood clots into the patient, and the blood is returned to the catheter, the patient can cause psychological panic, increase the psychological burden on patients. 同时,封管时使用较多的抗凝剂,不适用于凝血机制有问题的患者。 At the same time, the use of anticoagulants when more sealed tube, does not apply to patients with clotting mechanism in question. 此外,Y型留置针底座的材料比较硬,对局部皮肤的压强比较大,不适用于水肿患者。 Further, Y-type catheter of the base material is relatively hard, the local pressure on the skin is relatively large, does not apply to edema.

发明内容 SUMMARY

[0003] 本发明的目的在于针对上述存在问题和不足,提供一种无需将输液针插入到留置针座腔体而又可靠地将药液顺畅地送入到留置针软管中并送至静脉血管中,且血液不会回流到留置针座腔体外的并具有防回流功效,符合世界卫生组织提倡无针输液的要求的直型留置针。 [0003] The object of the present invention for the above-described problems and shortcomings, to provide an infusion needle without the indwelling needle is inserted into the cavity housing the liquid to be smoothly and reliably fed to an indwelling needle to the vein and the hose vessel, and the blood does not flow back into the catheter hub outside the chamber and having a backflow prevention effect, to promote compliance with the world Health Organization requires a needle infusion catheter straight.

[0004] 本发明的技术方案是这样实现的: 本发明所述的直型留置针,包括留置针座及留置针软管,其特点是所述留置针座腔体下部设置有一用软质的具有弹性的医用材料制成的密封塞,留置针座腔体内设有一可插穿该密封塞而伸入到留置针座腔体底部的由医用材料制成的硬质中空导液杆,该硬质中空导液杆的上部与外接输液装置连通。 [0004] aspect of the present invention is implemented as follows: straight indwelling needle of the present invention, comprising a catheter hub and catheter tube, characterized in that the catheter hub is provided with a lower chamber with a soft medical sealing plug made of a material having elasticity, the indwelling needle holder is provided with a rigid hollow cavity rod made indwelling catheter bottom of the cavity of the needle hub a medical material may be inserted through the sealing plug and projecting into the hard It communicates with the upper external infusion catheter interstitial hollow rod.

[0005] 为进一步使本发明具有可靠的正压功能,以保证本发明能有效而长时间地防止血液回流,不会有血栓的形成,上述密封塞的中部设有一喇叭形空穴体,该喇叭形空穴体的底面与密封塞底面之间为一薄片状结构,该薄片状结构在被穿刺针刺破后形成的微孔通过其本身的弹性形成为一单向阀结构,当穿刺针拔出后,该微孔自动收合而有效阻止留置针软管中的血液回流。 [0005] The present invention further has a reliable function of positive pressure to ensure that the present invention is effective to prevent blood reflux and for a long time, there will be no formation of thrombus, the sealing plug is provided with a central hole horn member, the between the bottom surface and the bottom surface of the sealing plug hole horn is a sheet-like body structure, the sheet-like porous structure formed after being punctured by a needle puncture is formed by its own elastic structure is a one-way valve, when the puncture needle after extraction, the microporous automatically folding effectively prevents backflow of blood in the catheter hose. 且该密封塞与留置针座腔体上部的密封装置相结合形成为一可产生正压的储液腔,而储液腔中储存有正压药液后,该密封塞底部形成的微孔可在正压作用下张开而使储液腔中的药液缓慢滴落至留置针软管中并压向至静脉血管中阻止血液回流到留置针软管中,避免血栓的形成。 The sealing plug and the upper chamber of the indwelling needle hub sealing means is formed as a combination may generate a positive pressure in the reservoir chamber, the reservoir chamber after the pressure stored liquid, forming the bottom of a plug seal may be microporous in the opening action of the pressure in the liquid reservoir chamber to an indwelling needle was slowly dropped and pressed against the hose to prevent the backflow of blood in the vein to the catheter hose, to avoid thrombosis.

[0006] 为了使上述硬质中空导液杆的结构组成多种多样,既可以是上述硬质中空导液杆的下部为可插穿密封塞的中空柱杆,其上部为可与外接的通用输液导管连接的管接口,此时,为了进一步方便该硬质中空导液杆与留置针座腔体的连接固定,上述硬质中空导液杆既可以是其上部一体设有一可固定于留置针座腔体内的环盘,该环盘上设有可与外接的通用输液导管连接的管接口,也可以是其上部一体设有一可螺旋连接于留置针座腔体开口的具有内螺纹的套盖体,该套盖体上设有可与外接的通用输液导管连接的管接口,上述硬质中空导液杆还可以是下部为可插穿上述密封塞的中空柱杆,其上部一体设有一可用于固定于留置针座腔体开口上的环状柱塞,且该环状柱塞的外圆周表面上设有可与外接的具有内螺纹的通用输液接头连接的外螺纹,上述硬质中空导 [0006] In order to make the structure hollow catheter shaft composed of the hard variety, may be a rigid hollow lower portion of the catheter shaft to be inserted through the hollow strut sealing plug, with which an upper portion of the common external infusion catheter tube connected to the interface, this time, in order to further facilitate the connection of the hollow rigid rod indwelling catheter hub cavity is fixed, the hard hollow catheter shaft may be either integrally provided with an upper portion thereof may be fixed to the catheter seat ring disk cavity and a tube connected to the universal interface of the external infusion catheter of the ring disk, which may be integrally provided with an upper portion threadably connected to the catheter hub chamber opening sleeve having an internal threaded cap body, provided with a tube connected to the universal interface of the infusion catheter of the external sleeve cover member, the hard hollow catheter shaft may be a hollow mast to be inserted through the lower portion of the sealing plug, which is integrally provided with an upper portion of the available fixed to the placement of the annular plunger chamber opening on the needle hub, and is provided with an external thread can be connected to the universal joint having an internally threaded infusion circumscribed on the outer circumferential surface of the annular plunger, said rigid hollow guide 液杆还可以是其上部一体设有一可螺旋连接于留置针座腔体开口的具有内螺纹的套盖体,该套盖体上部一体设有一环状柱塞, 且该环状柱塞的外圆周表面上设有可与外接的具有内螺纹的通用输液接头连接的外螺纹。 Liquid rod may also be integrally provided with an upper portion threadably connected to the catheter hub chamber opening sleeve having an internal thread lid, the upper lid cover member is integrally provided with an annular piston and the outer annular plunger provided with external threads can be connected to the universal joint having an internally threaded infusion of the external circumferential surface. 且上述硬质中空导液杆的底端设置为不易刺伤人体的圆滑过渡的弧形体。 And said rigid hollow rod bottom end of the catheter to easily puncture human smooth transition of the arcuate body.

[0007] 本发明由于巧妙地采用密封塞与导液杆相结合的结构,既可以利用密封塞来可靠地密封隔离留置针软管及留置座腔体底部,保证在穿刺完毕拔出穿刺针后不会出现血液回流到留置针座腔体外的现象,消除医护人员与病人的交叉感染并使医护人员可以单手进行穿刺针的拔出操作,减少医护人员的劳动强度和减轻病人血管的压痛及损伤现象。 After the [0007] present invention, since the sealing plug with clever use of the combination of catheter shaft structure, with a sealing plug may be reliably sealed from the catheter tube and the bottom of the cavity retention seat, pull out the needle in the puncture to ensure complete It does not occur in vitro blood to the catheter hub cavity phenomenon, eliminate health care workers and health care workers and patients cross-infection can be pulled out with one hand operation of the puncture needle, reduce labor intensity of health care and reduce the patient's blood vessel and tenderness damage phenomenon. 利用中空导液管可靠而顺利地将外接的输液装置中的药液送至留置针软管中,不必采用输液针来输送药液,使这种结构的直型留置针更符合国际上对留置针的要求和发展趋势。 Using a hollow catheter reliably and smoothly in the external infusion device to the liquid in the catheter tube need not be employed to deliver the drug solution infusion needle, such that the straight indwelling needle structure more in line with the international indwelling needle requirements and trends. 同时,通过采用在密封塞中部设置一空穴体的结构,既可以利用密封塞可靠地密封隔离留置针软管部分及留置针座腔体底部的细小空间部分,保证在使用穿刺针进行穿刺后不会出现血液回流留置针座腔体外的现象,既使医护人员可以方便地用单手操作穿刺针的拔出,又有效防止病人和医护人员的交叉感染,而且也不会出现压痛病人血管的现象,并避免周围环境对药液和血液的污染,消除现有的利用活塞的移动来产生正压所存在的可靠性低的问题,达到安全输液的目的。 Meanwhile, by using a hole provided in the middle of the sealing plug body structure, the sealing plug either by using a fine space portion is reliably sealed from the catheter tube portion and a bottom of the cavity indwelling needle holder, the puncture needle after use to ensure that the puncture does not occur in vitro blood return lumen catheter hub phenomenon, even if health care can be easily removed with one hand puncture needle, but also to effectively prevent cross-infection of health care workers and patients, and will not appear in the patient's blood vessel tenderness phenomenon and to avoid chemical contamination of the surrounding environment and the blood, the elimination of the existing object using movement of the piston to produce a low pressure exists in the reliability, safety achieve infusion. 又巧妙地利用密封塞与硬质中空导液杆上部之间形成的储液腔在输液完成后形成的正压腔室与医用密封塞底面之间的薄片状结构上的微孔的单向阀功能,利用该正压腔室内储存的药液沿密封塞的中心的喇叭形空穴底部的穿刺微孔而缓慢滴落,使该穿刺微孔形成为一单向阀,有效而可靠地防止血液的回流,且操作简单,易于掌握,有利于在各基层医疗单位的推广应用。 And clever use of the reservoir chamber is formed between the sealing plug and the hard hollow portion in the catheter rod pressure chamber formed in the medical infusion after completion of the sealing plug the micropores of the sheet-like structure between the bottom surface of the check valve function, using the liquid pressure chamber along the reservoir bottom flared sealing micropores piercing a center hole of the plug is dropped slowly, so that the piercing micropores formed as a check valve, effectively and reliably prevent blood reflow, and the operation is simple, easy to learn, help promote the use of primary health care units in each. 其操作应用时只需在药液快输完时,拔出输液针时,将输液针在该储液腔内稍稍停留一段时间并调整输液器的调节按钮,使调节按钮突然向前一推而使输液管道内的液体产生一瞬间的爆发流动而射入储液腔内,使该储液腔内储存有正压的药液,从而压缩该储液腔中的气体形成足够大的正压,而在完全拔出输液针后,该储液腔中的药液在其正压作用下会缓慢地从密封塞中的喇叭形空穴中沿穿刺针和输液针刺破后的刺穿微孔中滴落至留置针软管中继续压至静脉血管,直至储液腔中的压强与人体静脉中的血液压强相等时形成一种平衡状态,有效保证血液可以长时间也不会产生回流,可靠而安全地避免血栓的形成,并且不需要采用抗凝液进行封管(大多数封管液为抗凝药物,有些病人禁止使用),既减轻护士的劳动强度,又降低病人的医疗费用。 Its operation only upon application quickly finished entering liquid, pull the infusion needle, the infusion needle will stay for some time and slightly adjust infusion adjustment button in the liquid reservoir chamber, the adjusting push button and a lurch forward infusion of the liquid in the flow duct produce a moment of the outbreak and enters the reservoir chamber, so that the liquid storage chamber storing a liquid positive pressure, so that the compressed gas reservoir chamber is formed sufficiently large positive pressure, after the infusion needle is completely pulled out, the chemical solution reservoir chamber slowly along the puncture needle and the infusion needle piercing micropores after breaking the sealing plug from the hole in the horn at its positive pressure dripping hose to an indwelling needle to the vein is continued pressure, until the formation of an equilibrium state is equal to the pressure in the reservoir chamber blood pressure and body vein, it can effectively guarantee a long time does not produce blood reflux, reliable safely avoid the formation of blood clots, and does not require the use of anticoagulant fluid were sealed tube (sealing solution for the majority of anticoagulant drugs, some patients not to use), both nurses reduce labor intensity, but also reduce health care costs of patients. 且本发明结构简单、可靠、成本低廉、实用性强、有利于广泛推广和普及应用。 And simple structure, reliable, low cost, practical, and beneficial widely generalizable.

[0008] 下面结合附图对本发明作进一步的说明。 [0008] The following drawings further illustrate the present invention in combination.

附图说明 BRIEF DESCRIPTION

[0009] 图1是本发明所述的中空导液杆状态一的结构示意图。 [0009] FIG. 1 is a structural diagram of the state of the hollow rod of the catheter of the present invention.

[0010] 图2是本发明使用图1所示中空导液杆的结构示意图。 [0010] FIG. 2 is a schematic view of a hollow catheter shaft of the present invention shown in FIG.

[0011] 图3是本发明所述的中空导液杆状态二的结构示意图。 [0011] FIG. 3 is a schematic view of a hollow catheter shaft according to the present invention, state II.

[0012] 图4是本发明使用图3所示中空导液杆的结构示意图。 [0012] As shown in FIG. 4 is a schematic view of a hollow catheter shaft 3 of the present invention using FIG.

[0013] 图5是本发明所述的中空导液杆状态三的结构示意图。 [0013] FIG. 5 is a state of a hollow catheter shaft according to the present invention a schematic structural diagram III.

[0014] 图6是本发明使用图5所不中空导液杆的结构不意图。 [0014] FIG. 6 is a configuration of the present invention, FIG 5 is not a hollow catheter shaft is not intended.

[0015] 图7是本发明所述的中空导液杆状态四的结构示意图。 [0015] FIG. 7 is a state of a hollow catheter shaft according to the present invention a schematic structural diagram of four.

[0016] 图8是本发明使用图7所不中空导液杆的结构不意图。 [0016] FIG. 8 is a configuration using the present invention, FIG. 7 does not hollow catheter shaft intended.

[0017] 图9是本发明所述的中空导液杆状态五的结构示意图。 [0017] FIG. 9 is a schematic structural diagram of a hollow catheter shaft according to the present invention, the state of five.

[0018] 图10是本发明使用图9所不中空导液杆的结构不意图。 [0018] FIG. 10 is a configuration 9 does not bar the hollow catheter of the present invention is not intended to FIG.

具体实施方式 Detailed ways

[0019] 如图1-图10所示,本发明所述的直型留置针,包括留置针座1及留置针软管2,所述留置针座1腔体下部设置有一用软质的具有弹性的医用材料制成的密封塞3,留置针座1腔体内设有一可插穿该密封塞3而伸入到留置针座腔体底部的由医用材料制成的硬质中空导液杆4,该硬质中空导液杆4的上部与外接输液装置连通。 [0019] As shown in FIG. 1 to FIG. 10, the straight indwelling needle of the present invention, comprising a needle hub 1 and an indwelling catheter tube 2, the lower portion of the indwelling needle hub 1 is provided with a cavity having a soft seal made of an elastic medical material plug 3, the indwelling needle holder 1 is provided with a rigid hollow cavity catheter shaft 4 is made of an indwelling needle hub bottom of the cavity by the medical material may be inserted through a sealing plug 3 which projects into the , rigid hollow upper portion of the catheter shaft 4 communicates with the external infusion device. 为进一步使本发明具有可靠的正压功能,以保证本发明能有效而长时间地防止血液回流,不会有血栓的形成,上述密封塞3的中部设有一喇叭形空穴体31,该喇叭形空穴体31的底面与密封塞3底面之间为一薄片状结构,该薄片状结构在被穿刺针刺破后形成的微孔通过其本身的弹性形成为一单向阀结构,当穿刺针拔出后,该微孔自动收合而有效阻止留置针软管2中的血液回流,而当储液腔5中储存有正压药液后,该微孔可在正压作用下张开而使储液腔5中的药液缓慢滴落至留置针软管2中并压向至静脉血管中阻止血液回流到留置针软管中,避免血栓的形成。 The present invention is further having a positive and reliable function, the present invention is effective to ensure a long time and prevent the backflow of blood, thrombus formation has not, the sealing plug 3 is provided with a central hole horn member 31, the speaker shaped hole bottom surface 31 of the sealing plug 3 between the bottom surface of a sheet-like structure, the sheet-like microporous structure after being punctured by a needle puncture formed as a check valve is formed by an elastic structure itself, when the puncture after the needle is pulled out, the microporous automatically folding effectively prevents backflow of blood in the catheter tube 2, the liquid chamber 5 when the positive pressure in the liquid reservoir, the microporous expandable under positive pressure 5 in the reservoir chamber to the liquid slowly drips catheter hose 2 and is pressed against the vein to prevent the backflow of blood into the catheter hose, to avoid thrombosis. 上述硬质中空导液杆4的结构组成可以多种多样,既可以是如图9-图10所示,上述硬质中空导液杆4的下部为可插穿密封塞3的中空柱杆,其上部为可与外接的通用输液导管连接的管接口,此时,为使该中空导液杆与留置针座腔体相连接固定,该留置针座腔体上装置有一通用的肝素帽6,上述中空导液杆穿过该肝素帽6而连接固定于留置针座腔体上,为了进一步方便该硬质中空导液杆4与留置针座1腔体的连接固定,上述硬质中空导液杆4既可以是如图1-图2所示,该中空导液杆上部一体设有一可固定于留置针座1腔体内的环盘41, 该环盘41上设有可与外接的通用输液导管连接的管接口,也可以是如图3-图4所示,该中空导液杆上部一体设有一可螺旋连接于留置针座1腔体开口的具有内螺纹的套盖体42,该套盖体42上设有可与外接的通用输液导管连接的管接口,上述硬质中 The hard structure of hollow rod 4 of the catheter can be varied composition, may be a 9 to FIG. 10, a lower portion of the rigid hollow rod 4 of the catheter may be inserted through the hollow sealing plug 3 of the mast, an upper portion of the nipple can be connected with the universal infusion catheter external, in which case, to make the hollow catheter shaft and the catheter hub cavity is connected to a fixed, the indwelling heparin cap 6 means has a hub cavity a common, the hollow shaft through which the catheter is connected heparin cap 6 is fixed to the catheter hub cavity, a fixed order to further facilitate the rigid hollow catheter indwelling needle bar 4 is connected to the base 1 of the cavity, the hard hollow catheter lever 4 may be either as shown in Figures 1 2, the hollow catheter has a rod portion may be integrally secured to a catheter hub cavity ring disk 41 is provided with an external generic infusion on the ring disk 41 an interface connected to the catheter tube, may be as shown in FIG. 3 to FIG. 4, the hollow catheter is provided with an integral rod portion threadably connected to the catheter hub chamber opening sleeve 1 has an inner threaded cap member 42, the sleeve the cover is provided with tubes connected to the common interface of the infusion catheter 42 external, in the hard 空导液杆4还可以是如图5-图6所示,该中空导液杆下部为可插穿上述密封塞3的中空柱杆,其上部一体设有一可用于固定于留置针座1腔体开口上的环状柱塞43,且该环状柱塞43的外圆周表面上设有可与外接的具有内螺纹的通用输液接头连接的外螺纹,上述硬质中空导液杆4还可以是如图7-图8所示,该中空导液杆上部一体设有一可螺旋连接于留置针座1腔体开口的具有内螺纹的套盖体42,该套盖体42上部一体设有一环状柱塞43,且该环状柱塞43的外圆周表面上设有可与外接的具有内螺纹的通用输液接头连接的外螺纹。 Null catheter shaft 4 may also be shown in FIG. 5 to FIG. 6, the lower bar of the hollow catheter to be inserted through the sealing plug hollow mast 3, the upper portion may be integrally provided with a seat for fixing to an indwelling needle lumen an annular piston body on the opening 43, and is provided on an outer circumferential surface of the annular plunger 43 with external threads universal transfusion linker internally threaded external, the hard hollow catheter shaft 4 can also be is shown in FIG. 7 to the hollow catheter 8 is provided with a rod portion may be integrally connected to an indwelling needle hub helical chamber opening sleeve 1 has an inner threaded cap member 42, the sleeve 42 is integrally provided with an upper lid ring shaped plunger 43, and provided with external threads can be connected to the universal joint having an internally threaded infusion circumscribed on the outer circumferential surface of the annular plunger 43. 且上述硬质中空导液杆4的底端设置为不易刺伤人体的圆滑过渡的弧形体。 And said rigid hollow catheter shaft bottom end (4) to a smooth transition is not easy to stab the arcuate body member.

[0020] 本发明由于巧妙地采用密封塞与导液杆相结合的结构,既可以利用密封塞来可靠地密封隔离留置针软管及留置座腔体底部,保证在穿刺完毕拔出穿刺针后不会出现血液回流到留置针座腔体外的现象,消除医护人员与病人的交叉感染并使医护人员可以单手进行穿刺针的拔出操作,减少医护人员的劳动强度和减轻病人血管的压痛及损伤现象。 After the [0020] present invention, since the sealing plug with clever use of the combination of catheter shaft structure, with a sealing plug may be reliably sealed from the catheter tube and the bottom of the cavity retention seat, pull out the needle in the puncture to ensure complete It does not occur in vitro blood to the catheter hub cavity phenomenon, eliminate health care workers and health care workers and patients cross-infection can be pulled out with one hand operation of the puncture needle, reduce labor intensity of health care and reduce the patient's blood vessel and tenderness damage phenomenon. 利用中空导液管可靠而顺利地将外接的输液装置中的药液送至留置针软管中,不必采用输液针来输送药液,使这种结构的直型留置针更符合国际上对留置针的要求和发展趋势。 Using a hollow catheter reliably and smoothly in the external infusion device to the liquid in the catheter tube need not be employed to deliver the drug solution infusion needle, such that the straight indwelling needle structure more in line with the international indwelling needle requirements and trends. 同时,通过采用在密封塞中部设置一空穴体的结构,既可以利用密封塞可靠地密封隔离留置针软管部分及留置针座腔体底部的细小空间部分,保证在使用穿刺针进行穿刺后不会出现血液回流留置针座腔体外的现象,既使医护人员可以方便地用单手操作穿刺针的拔出,又有效防止病人和医护人员的交叉感染,而且也不会出现压痛病人血管的现象,并避免周围环境对药液和血液的污染,消除现有的利用活塞的移动来产生正压所存在的可靠性低的问题,达到安全输液的目的。 Meanwhile, by using a hole provided in the middle of the sealing plug body structure, the sealing plug either by using a fine space portion is reliably sealed from the catheter tube portion and a bottom of the cavity indwelling needle holder, the puncture needle after use to ensure that the puncture does not occur in vitro blood return lumen catheter hub phenomenon, even if health care can be easily removed with one hand puncture needle, but also to effectively prevent cross-infection of health care workers and patients, and will not appear in the patient's blood vessel tenderness phenomenon and to avoid chemical contamination of the surrounding environment and the blood, the elimination of the existing object using movement of the piston to produce a low pressure exists in the reliability, safety achieve infusion. 又巧妙地利用密封塞与硬质中空导液杆上部之间形成的储液腔在输液完成后形成的正压腔室与医用密封塞底面之间的薄片状结构上的微孔的单向阀功能,利用该正压腔室内储存的药液沿密封塞的中心的喇叭形空穴底部的穿刺微孔而缓慢滴落,使该穿刺微孔形成为一单向阀,有效而可靠地防止血液的回流,且操作简单,易于掌握,有利于在各基层医疗单位的推广应用。 And clever use of the reservoir chamber is formed between the sealing plug and the hard hollow portion in the catheter rod pressure chamber formed in the medical infusion after completion of the sealing plug the micropores of the sheet-like structure between the bottom surface of the check valve function, using the liquid pressure chamber along the reservoir bottom flared sealing micropores piercing a center hole of the plug is dropped slowly, so that the piercing micropores formed as a check valve, effectively and reliably prevent blood reflow, and the operation is simple, easy to learn, help promote the use of primary health care units in each. 其操作应用时只需在药液快输完时,拔出输液针时,将输液针在该储液腔内稍稍停留一段时间并调整输液器的调节按钮,使调节按钮突然向前一推而使输液管道内的液体产生一瞬间的爆发流动而射入储液腔内,使该储液腔内储存有正压的药液,从而压缩该储液腔中的气体形成足够大的正压,而在完全拔出输液针后,该储液腔中的药液在其正压作用下会缓慢地从密封塞中的喇叭形空穴中沿穿刺针和输液针刺破后的刺穿微孔中滴落至留置针软管中继续压至静脉血管,直至储液腔中的压强与人体静脉中的血液压强相等时形成一种平衡状态,有效保证血液可以长时间也不会产生回流,可靠而安全地避免血栓的形成,并且不需要采用抗凝液进行封管(大多数封管液为抗凝药物,有些病人禁止使用),既减轻护士的劳动强度,又降低病人的医疗费用。 Its operation only upon application quickly finished entering liquid, pull the infusion needle, the infusion needle will stay for some time and slightly adjust infusion adjustment button in the liquid reservoir chamber, the adjusting push button and a lurch forward infusion of the liquid in the flow duct produce a moment of the outbreak and enters the reservoir chamber, so that the liquid storage chamber storing a liquid positive pressure, so that the compressed gas reservoir chamber is formed sufficiently large positive pressure, after the infusion needle is completely pulled out, the chemical solution reservoir chamber slowly along the puncture needle and the infusion needle piercing micropores after breaking the sealing plug from the hole in the horn at its positive pressure dripping hose to an indwelling needle to the vein is continued pressure, until the formation of an equilibrium state is equal to the pressure in the reservoir chamber blood pressure and body vein, it can effectively guarantee a long time does not produce blood reflux, reliable safely avoid the formation of blood clots, and does not require the use of anticoagulant fluid were sealed tube (sealing solution for the majority of anticoagulant drugs, some patients not to use), both nurses reduce labor intensity, but also reduce health care costs of patients. 且本发明结构简单、可靠、成本低廉、实用性强、有利于广泛推广和普及应用。 And simple structure, reliable, low cost, practical, and beneficial widely generalizable.

[0021] 本发明是通过实施例来描述的,但并不对本发明构成限制,参照本发明的描述,所公开的实施例的其他变化,如对于本领域的专业人士是容易想到的,这样的变化应该属于本发明权利要求限定的范围之内。 [0021] The present invention is by way of example be described, but do not limit the present invention, described with reference to the present invention, there is disclosed other variations of the embodiments, as described for professionals in the art are readily conceivable, such variations should fall within the claims of the invention defined in the scope.

Claims (8)

1. 一种直型留置针,包括留置针座(1)及留置针软管(2),其特征在于所述留置针座(1) 腔体下部设置有一用软质的具有弹性的医用材料制成的密封塞(3),留置针座(1)腔体内设有一可插穿该密封塞(3)而伸入到留置针座腔体底部的由医用材料制成的硬质中空导液杆(4),该硬质中空导液杆(4)的上部与外接输液装置连通。 A straight indwelling needle, the needle hub comprising a catheter (1) and a catheter tube (2), characterized in that the lower portion of said indwelling needle holder (1) is provided with a cavity of a soft elastic material having a medical use formed sealing plug (3), the indwelling needle holder (1) is provided with a cavity may be inserted through the sealing plug (3) and projects into the hollow rigid indwelling catheter made of a bottom of the cavity of the needle hub of medical material rod (4), the upper portion of the catheter rigid hollow rod (4) communicates with the external infusion device.
2. 根据权利要求1所述直型留置针,其特征在于上述密封塞(3)的中部设有一喇叭形空穴体(31),该喇叭形空穴体(31)的底面与密封塞(3)底面之间为一薄片状结构,该薄片状结构在被穿刺针刺破后形成的微孔通过其本身的弹性形成为一单向阀结构,当穿刺针拔出后,该微孔自动收合而有效阻止留置针软管(2)中的血液回流,而当储液腔(5)中储存有正压药液后,该微孔可在正压作用下张开而使储液腔(5)中的药液缓慢滴落至留置针软管(2) 中并压向至静脉血管中阻止血液回流到留置针软管中,避免血栓的形成。 1 according to the straight catheter of claim wherein the middle of said sealing plug (3) is provided with a flared hole (31), the flared hole (31) and the bottom surface of the sealing plug ( 3) between the bottom surface of a porous sheet-like structure, the sheet-like structure is formed after being punctured by a needle puncture is formed by its own elastic structure is a one-way valve, when the puncture needle is pulled out, the microporous automatically Collapse effectively prevents the indwelling needle blood return hose (2), when the reservoir chamber (5) there is a positive pressure in the liquid reservoir, the microporous reservoir chamber can be expanded under the action of a positive pressure (5) the liquid was slowly dropped to the catheter tube (2) and pressed against the vein to prevent blood reflux into the catheter hose, to avoid thrombosis.
3. 根据权利要求1所述直型留置针,其特征在于上述硬质中空导液杆(4)的下部为可插穿密封塞(3)的中空柱杆,其上部为可与外接的通用输液导管连接的管接口。 1 according to the straight indwelling needle as claimed in claim, wherein a lower portion of the rigid hollow catheter shaft (4) to be inserted through a sealing plug (3) of the hollow strut, which upper portion is common with external infusion tube connected to the interface of the catheter.
4. 根据权利要求3所述直型留置针,其特征在于上述硬质中空导液杆(4)的上部一体设有一可固定于留置针座(1)腔体内的环盘(41 ),该环盘(41)上设有可与外接的通用输液导管连接的管接口。 3 according to the straight catheter as claimed in claim, wherein the rigid hollow upper portion of the catheter shaft (4) is integrally provided with a needle hub may be secured to the catheter (1) within the cavity ring disk (41) ring disk (41) provided with a tube connected to the external interface of the common infusion catheter.
5. 根据权利要求3所述直型留置针,其特征在于上述硬质中空导液杆(4)的上部一体设有一可螺旋连接于留置针座(1)腔体开口的具有内螺纹的套盖体(42),该套盖体(42)上设有可与外接的通用输液导管连接的管接口。 5. The method of claim 3 straight catheter, wherein an upper portion of the rigid hollow catheter shaft (4) is integrally provided with a sleeve having an internal thread threadably connected to the indwelling needle holder (1) cavity opening a cover member (42), the cover sleeve is provided with an external pipe connection interface generic infusion catheter (42).
6. 根据权利要求1所述直型留置针,其特征在于上述硬质中空导液杆(4)的下部为可插穿上述密封塞(3)的中空柱杆,其上部一体设有一可用于固定于留置针座(1)腔体开口上的环状柱塞(43),且该环状柱塞(43)的外圆周表面上设有可与外接的具有内螺纹的通用输液接头连接的外螺纹。 1 according to the straight indwelling needle as claimed in claim, wherein a lower portion of the rigid hollow catheter shaft (4) is a hollow pole may be inserted through the sealing plug (3), which is integrally provided with an upper portion that can be used indwelling needle is fixed to the holder (1) an annular plunger (43) on the opening of the cavity, and is provided on an outer circumferential surface of the annular plunger (43) may be connected with the universal joint having an internally threaded infusion of circumscribed external thread.
7. 根据权利要求1所述直型留置针,其特征在于上述硬质中空导液杆(4)的上部一体设有一可螺旋连接于留置针座(1)腔体开口的具有内螺纹的套盖体(42),该套盖体(42)上部一体设有一环状柱塞(43),且该环状柱塞(43)的外圆周表面上设有可与外接的具有内螺纹的通用输液接头连接的外螺纹。 1 according to the straight indwelling needle as claimed in claim, wherein the rigid hollow upper portion of the catheter shaft (4) may be integrally provided with a helical needle hub connected to the catheter (1) having an internally threaded sleeve cavity opening a cover member (42), the cover sleeve (42) is integrally provided with an upper annular plunger (43), and is provided with an internal thread can be common with the external circumferential surface of the outer annular plunger (43) infusion male thread joint.
8. 根据权利要求1所述直型留置针,其特征在于上述硬质中空导液杆(4)的底端设置为不易刺伤人体的圆滑过渡的弧形体。 1 according to the straight indwelling needle claim, wherein the bottom end of the rigid hollow catheter shaft (4) is set to be a smooth transition is not easy to stab the arcuate body member.
CN201410295935.7A 2014-06-27 2014-06-27 Straight-type indwelling needle CN104043161A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410295935.7A CN104043161A (en) 2014-06-27 2014-06-27 Straight-type indwelling needle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410295935.7A CN104043161A (en) 2014-06-27 2014-06-27 Straight-type indwelling needle

Publications (1)

Publication Number Publication Date
CN104043161A true CN104043161A (en) 2014-09-17

Family

ID=51496875

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410295935.7A CN104043161A (en) 2014-06-27 2014-06-27 Straight-type indwelling needle

Country Status (1)

Country Link
CN (1) CN104043161A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106166315A (en) * 2016-05-12 2016-11-30 卢小兵 Muscle remaining needle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020128604A1 (en) * 2001-03-12 2002-09-12 Hiroaki Nakajima Indwelling catheter
CN101316621A (en) * 2005-10-11 2008-12-03 科维蒂恩股份公司 Iv catheter with in-line valve and methods related thereto
CN201286927Y (en) * 2008-08-26 2009-08-12 江西洪达医疗器械集团有限公司 Sealing batching plug of venous indwelling needle
CN203342194U (en) * 2013-05-15 2013-12-18 福建省百仕韦医用高分子股份有限公司 Medical infusion adapter which is provided with check valve and connected with extracorporal indwelling catheter
CN203971058U (en) * 2014-06-27 2014-12-03 陈伟权 Straight remaining needle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020128604A1 (en) * 2001-03-12 2002-09-12 Hiroaki Nakajima Indwelling catheter
CN101316621A (en) * 2005-10-11 2008-12-03 科维蒂恩股份公司 Iv catheter with in-line valve and methods related thereto
CN201286927Y (en) * 2008-08-26 2009-08-12 江西洪达医疗器械集团有限公司 Sealing batching plug of venous indwelling needle
CN203342194U (en) * 2013-05-15 2013-12-18 福建省百仕韦医用高分子股份有限公司 Medical infusion adapter which is provided with check valve and connected with extracorporal indwelling catheter
CN203971058U (en) * 2014-06-27 2014-12-03 陈伟权 Straight remaining needle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106166315A (en) * 2016-05-12 2016-11-30 卢小兵 Muscle remaining needle
CN106166315B (en) * 2016-05-12 2019-03-22 卢小兵 Muscle remaining needle

Similar Documents

Publication Publication Date Title
WO1997004824A1 (en) Camouflaged injection needle
BRPI0418352B1 (en) Wash syringe set
US20170056595A1 (en) Positive Displacement Flush Syringe
BRPI0414639B1 (en) i.v. wash syringe set
BRPI0506716B1 (en) positive displacement wash syringe set
CN103285450B (en) Multifunctional indwelling needle
CN101879341A (en) Safety venous indwelling needle with needleless interface positive-pressure closing valve
CN100502964C (en) Flush syringe having anti-reflux stopper
CN103599580B (en) Continuous Positive Airway Pressure intravenous catheter
US3017884A (en) Apparatus for injecting or infusing fluids into patients and method of making same
CN201244280Y (en) Safety retaining needle
CN201880124U (en) Double safety vein indwelling needle
CN101080248A (en) Medical syringe capable of extending automatically drawing back
CN101195054A (en) Non-needle positive pressure enclosed transfusion joint valve
CN201783060U (en) Venous indwelling needle with needle-free positive-pressure joint
CN100479873C (en) Needle-free closed transfusion adaptor
CN201200674Y (en) Infusion device
CN202478299U (en) Safety indwelling needle
CN203647794U (en) Safe indwelling needle for blood sampling and transfusing
JP2016527069A (en) Infusion needle unit with needle stick and infection prevention function
CN202136638U (en) Disposable pipe-washing-free vesica-type negative pressure venous indwelling needle
WO2016086833A1 (en) Indwelling needle sustained release positive pressure apparatus
CN203861690U (en) Vein detained needle capable of preventing needling
CN2275454Y (en) Arteriovenous needle
CN2341658Y (en) Venous retaining needle

Legal Events

Date Code Title Description
C06 Publication
C10 Entry into substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)