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WO2014047889A1 - 管针并通式软管留置输液器 - Google Patents

管针并通式软管留置输液器 Download PDF

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Publication number
WO2014047889A1
WO2014047889A1 PCT/CN2012/082356 CN2012082356W WO2014047889A1 WO 2014047889 A1 WO2014047889 A1 WO 2014047889A1 CN 2012082356 W CN2012082356 W CN 2012082356W WO 2014047889 A1 WO2014047889 A1 WO 2014047889A1
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WO
WIPO (PCT)
Prior art keywords
needle
hose
seat
sliding
tube
Prior art date
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Ceased
Application number
PCT/CN2012/082356
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English (en)
French (fr)
Inventor
张建铭
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Individual
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Individual
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Priority to PCT/CN2012/082356 priority Critical patent/WO2014047889A1/zh
Priority to CN201280041750.2A priority patent/CN103857424B/zh
Publication of WO2014047889A1 publication Critical patent/WO2014047889A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • A61M25/0612—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
    • A61M25/0631—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle

Definitions

  • the invention relates to a medical infusion device, in particular to a needle-and-tube type indwelling infusion set.
  • FIG. 1 An infusion set in the prior art is shown in the figure 1 , which is composed of a puncturing device 1, a connecting tube 2 and a rear end assembly, and the rear end assembly is composed of a liquid chemical filter 3, an infusion hose 4, a liquid flow regulator 5, a drip bucket 6, a bottle end connecting tube 7, The bottle stopper 8 and the ventilator 9 are composed.
  • the puncture device 1 is composed of a certain length of hard needle tube and an operating handle. When infusion, the medical staff usually sends the whole needle tube into the patient's blood vessel, and then the puncture device is fixed on the human skin by using tape or applicator, so as to avoid The needle is detached or deviated.
  • the needle tube has a certain length and is hard and straight, it is more dangerous that the needle tip is very sharp, which limits the range of movement of the pin body, and the patient's limb needs to maintain a posture for a long time, which is very uncomfortable. Otherwise, the patient's limbs often move during the infusion process, and it is easy to cause the needle tip to scratch the endometrium, causing inflammation of the blood vessels, especially the infants have no self-control ability, and are more prone to infusion complications. When the needle insertion method is severely pulled, the puncture needle tube is deviated from the fixed position, and the needle tip may pierce or scratch the blood vessel, causing complications such as bruising, redness and swelling, and the patient is suffering.
  • the puncture needle is pulled out, and the blood needle tube is unprotected and exposed, and the needle tip stabs the medical staff, which causes blood infection. Therefore, medical staff should be very careful in operation to ensure the safety of the infusion.
  • the object of the present invention is to overcome the deficiencies in the prior art, and to provide a needle-in-tube type indwelling infusion device which is convenient to operate, has less limb requirements for the needle patient, is convenient to use, and is not easy to cause infusion complications. .
  • the object of the present invention is achieved by the following route.
  • Needle-and-tube type indwelling infusion set including trocar, connecting tube and rear end assembly
  • the puncturing device is a casing puncturing device, including a hose, a hose seat, a sealing member and a puncture needle tube
  • the needle seat and the operating handle the hose and the hose seat are fixed
  • the sealing member is placed in the inner cavity of the hose seat
  • the puncture needle tube passes through the sealing member and is sleeved in the hose core
  • the needle tip exposes the front end portion of the hose
  • the needle tube is connected with the front part of the needle seat
  • the rear end of the needle seat is connected with the connecting tube
  • the connecting tube is connected with the rear end assembly of the infusion set.
  • the hose seat is a cylindrical member, and the needle seat is sleeved in the inner cavity thereof.
  • the side of the hose seat extends axially with a sliding groove, and the operating handle is fixed across the sliding groove and the needle seat to form a sliding assembly, and the corresponding portion of the operating handle can slide along the sliding groove, the sliding assembly and the hose seat
  • There is a stop device between the back slide member that is stopped by the stop device, the puncture needle tip is still in front of the seal, and the hose core, the puncture needle core and the connecting tube die constitute an infusion channel.
  • the hose and the puncture needle are first inserted into the blood vessel, and after seeing the blood in the connecting tube, the angle of the puncture is lowered, and the hose is pushed into the blood vessel until the whole hose enters the blood vessel, and the needle is withdrawn. Until the stop device is stopped, the hose is placed in the blood vessel, and the flow regulator in the rear end assembly is opened. The liquid medicine passes through the needle end connection tube, the retracted puncture needle tube, and then enters the patient blood vessel through the hose. In, to achieve the purpose of infusion.
  • the patient can still flexibly move the body part of the tube, and the softened end of the hose does not damage the intima of the blood vessel, and the blood vessel is not worn. Infusion complications will not occur, providing patients with safe and comfortable infusion therapy.
  • the indwelling of the human body by the hose is carried out, and all the insufficiency caused by the infusion of the needle in the needle body (for example, the needle of the patient with the needle is complicated, the use is inconvenient, and the infusion complications are easy to occur)
  • the puncture needle is only receded and hidden in the hose seat and is not removed therefrom, and also serves as an infusion channel for the communication hose and the connecting tube.
  • the direct benefit of this is that it can be directly infused without the need to remove the puncture needle as in the prior art, and then insert the infusion needle for infusion, so that the infusion operation is quicker and more convenient; at the same time, the combination is a prior art
  • the puncture needle tube and the infusion needle tube enable the puncture needle tube of the present invention to have both functions at the same time, thereby simplifying the structure; in particular, since the puncture needle tube, the hose and the rear end assembly can be fixed into one without being detached, Therefore, it can be constructed in a one-piece factory and integrated, thus creating a structural possibility to ensure the one-time use of the product.
  • the object of the present invention can also be achieved by the following means.
  • the puncture needle tip is still located in the cavity of the hose seat before the seal and after the bare section of the hose.
  • the rear end of the hose is inserted into the hose seat, and the portion of the hose outside the hose seat is called the exposed section of the hose.
  • a total of two sliding grooves are symmetrically distributed on both sides of the hose seat, and two operating handles are respectively fixed to the needle holder through the sliding grooves.
  • the operating handle has a shape of a pinch ear, and the two latching ears fixed together with the needle seat constitute a double-kneading operating handle.
  • This double-pinch handle provides another convenient way to operate.
  • the anti-return device is a retreating obstacle at the end of the sliding slot.
  • the retreating obstacle may be a click point protruding from the end of the sliding slot, or the tail end of the sliding slot may be closed.
  • a backstop that is mounted between the sliding member and the hose block, and the sliding member that is retracted in position will resist contact with the check device if pushed forward.
  • the sliding member that is retracted in position cannot be pushed forward due to the blocking of the check device. Therefore, it is ensured that the retracted puncture needle can no longer be pulled out, and the needle-in-tube indwelling infusion set according to the present invention can also be promoted. One-time use.
  • Such backstop devices are common in prior art needle medical devices and are mostly applicable to the present invention.
  • the present invention provides two optimized backstop devices:
  • the backstop device is composed of a convex card point and a concave hole.
  • the convex card point and the concave hole are matched and arranged on the sliding component and the hose seat.
  • the other is:
  • the backstop device is composed of an elastic buckle and a card shoulder, the elastic buckle is located on the syringe, the shoulder is located on the sliding component, and the sliding component that climbs over the elastic buckle and retreats in position when the back is retracted, the shoulder is exactly elastic buckle
  • the card is snapped to prevent the puncture needle from pushing forward.
  • the elastic buckle is composed of a elastic suspension tongue and a buckle at the top end of the tongue.
  • the end of the sliding groove of the hose seat is hollowed out at a distance parallel to the sliding groove and is hollowed out at the end of the sliding groove and the sliding groove 'U 'The shape of the 'U' shape forms a resilient suspension tongue.
  • the buckle is located at the top end of the elastic suspension tongue and protrudes in the sliding groove.
  • the front side of the bayonet has a diagonal or curved shape for easy climbing.
  • the back side of the bayonet has a pointed shape or a vertical shape that prevents climbing.
  • the shoulder of the sliding member can easily climb over the buckle by pressing the elastic suspension tongue by the shape of the front side of the buckle, and the shape of the rear side of the bayonet ensures that the shoulder is formed opposite to the shoulder, thereby preventing the needle from being inserted. Push.
  • the shoulder is located on the operating handle and is specifically shaped as a recess or as a front shoulder of the operating handle.
  • the hose seat is a cylindrical member, the front inner cavity is a small hole, the rear inner cavity is a large hole, and the size between the two holes is excessively tapered, and the rear end of the hose is inserted in the small hole, and includes A wedge member having a tapered bottle shape which is open at the front and rear ends and axially penetrates the split slot, and the front straight portion of the wedge member is matched with the small hole and clamped in the small hole and the hose Between the wedges, the rear cone is over-matched with the conical shape of the hose housing.
  • the front wedge is used to tightly connect the hose to the hose seat.
  • the wedge is either medical stainless steel or medical plastic. Made, the seal is located behind the wedge cone.
  • a flap that is secured to the hose block.
  • the present invention has the following advantages over the prior art: since the hose is softened by the body temperature in the blood vessel, the patient can still flexibly move the limb portion of the tube, and the softened hose end The Department will not damage the intima of the blood vessels, and will not pierce the blood vessels, so there will be no infusion complications and safe and comfortable infusion treatment for the patients. After the infusion is finished, the indwelling hose is removed. Since the needle tip has been retracted into the front end of the hose holder and is not exposed, the needle tip does not hurt the person, and it is extremely convenient and safe for subsequent medical waste disposal.
  • the puncture needle tube of the invention has the functions of the two at the same time, thereby simplifying the structure; in particular, since the puncture needle tube, the hose and the rear end assembly can be fixed and integrated without being detached, the whole body can be manufactured and integrated. Use to create a structural possibility to ensure the one-time use of this product.
  • FIG. 1 is a schematic structural view of an infusion set in the prior art.
  • FIG. 2 is a schematic view showing the structure of a needle-and-tube type indwelling infusion set according to the present invention.
  • Figure 3 is a schematic view showing the structure of the puncturing device in the state to be punctured according to the first embodiment of the present invention.
  • Figure 4 is a schematic view showing the structure of the puncture device in the first embodiment of the present invention after the puncture is completed.
  • Figure 5 is a schematic perspective view showing the structure of a hose holder in the first embodiment of the present invention.
  • Figure 6 is a schematic perspective cross-sectional view showing the structure of a hose holder in the first embodiment of the present invention.
  • Figure 7 is a perspective view showing the structure of a slide assembly in a three-dimensional state in the first embodiment of the present invention.
  • Figure 8 is a schematic perspective view showing the structure of another sliding state of the sliding assembly in the first embodiment of the present invention.
  • Figure 9 is a schematic view showing the structure of the puncturing device in the state to be punctured according to the second embodiment of the present invention.
  • Figure 10 is a schematic view showing the structure of the puncturing device in a state to be punctured in the preferred embodiment of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • a needle-and-tube type indwelling infusion set includes a puncturing device 1, a connecting tube 2 and a rear end assembly, and the rear end assembly is composed of a liquid chemical filter 3, an infusion liquid tube 4, a liquid flow regulator 5, and a drop.
  • the bucket 6, the bottle end connecting pipe 7, the bottle stopper 8 and the exhauster 9 are composed.
  • the trocar is a cannula puncturing device comprising a hose 13, a hose holder 15, a seal 14, a puncture needle 11, a needle hub 12 and an operating handle 17.
  • the hose base 15 is a cylindrical member having an open front and rear end.
  • the front inner cavity is a small hole 154
  • the rear inner cavity is a large hole 155.
  • the size between the two holes is excessively stepped.
  • a sliding groove 151 extends from the side of the hose seat 15 in the axial direction.
  • the rear end of the sliding groove 151 protrudes forward and backward with a front convex click point 152 and a rear convex click point 153.
  • the front and rear convex click points are integrated with the hose seat. .
  • the hub 12 is coupled to the operating handle 17 and constitutes a slide assembly.
  • the operating handle 17 is a plate-like member, and a front and rear recesses 171, 172 are respectively provided at the upper and lower sides thereof near the needle holder 12.
  • a connecting tube boss 121 is formed behind the rear end of the needle holder 12.
  • the hose 13 is inserted into the small hole 154 and fixed to the hose seat 15, and the sealing member 14 is disposed at the joint of the large and small holes.
  • the sleeve is softened.
  • the tip of the needle exposes the front end portion of the hose 13
  • the puncture needle 11 is connected to the front portion of the needle hub 12, and the connecting tube boss 121 extending from the rear end of the needle holder 12 is connected with the connecting tube 2, and the connecting tube 2 and the infusion
  • the rear end components are connected in a group.
  • the needle holder 12 is sleeved in the inner cavity of the hose holder 15.
  • the operating handle 17 is fixed to the needle holder 12 across the sliding slot 151 and constitutes a sliding assembly.
  • the corresponding portion of the operating handle 17 can slide along the sliding slot 151, and the rear convex click point
  • the 153 and the rear recess 172 constitute a retaining device, and when the sliding component that slides backward is stopped by the retaining device, the puncture needle tip is still located in the cavity of the hose seat before the sealing member 14 and after the exposed portion of the hose 13 Medium (as shown in Figure 4).
  • the front convex click point 152 is also trapped in the front pit 171, and the front convex click point 152 and the front recess 171 are composed.
  • a backstop device that prevents the sliding member that is retracted in position from pushing forward.
  • the hose core, the puncture needle core, and the connecting tube die constitute an infusion channel.
  • the hose 13 and the puncture needle 11 penetrate into the blood vessel together, and after seeing the blood in the connecting tube 2, the angle of the puncture is lowered, and the hose 13 is continuously pushed into the blood vessel until the whole hose 13 enters the blood vessel.
  • the needle tube 11 is withdrawn until the stop device is stopped, the hose 13 is left in the blood vessel, the flow regulator in the rear end assembly is opened, the liquid medicine is passed through the rear end of the needle holder 12, and the puncture needle is retracted. 11, through the hose 13 into the patient's blood vessels, to achieve the purpose of infusion.
  • the flow regulator is closed and the indwelling hose 13 is withdrawn. Since the needle tip has been retracted into the front end of the hose holder and is not exposed, the needle tip does not hurt the person.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • a needle-and-tube type indwelling infusion set includes a puncturing device 1, a connecting tube 2 and a rear end assembly, and the rear end assembly is composed of a liquid chemical filter 3, an infusion liquid tube 4, a liquid flow regulator 5, a drip bucket 6, a bottle
  • the end connecting pipe 7, the bottle stopper 8 and the exhauster 9 are composed.
  • the trocar is a cannula puncturing device comprising a hose 13, a hose holder 15, a seal 14, a puncture needle 11, a needle hub 12 and an operating handle 17.
  • the hose seat 15 is a cylindrical member, the front inner cavity is a small hole 154, the rear inner cavity is a large hole 155, and the size between the two holes is excessively tapered, and the rear end of the hose 13 is inserted in the small hole.
  • the passage 154 further includes a wedge member 16 having a tapered bottle shape which is open at the front and rear ends and axially penetrates the split slot, and the front straight tube of the wedge member 16 matches the small hole 154 and Clamped between the small hole 154 and the hose 13, the rear cone of the wedge member 16 is excessively matched with the taper of the inner cavity of the hose seat 15, and the front top wedge member 16 softens the hose 13
  • the socket 15 is tightly coupled, the wedge member 16 is made of medical stainless steel or medical plastic, and the sealing member 14 is located behind the cone of the wedge member 16.
  • a needle-and-tube type indwelling infusion set includes a puncturing device 1, a connecting tube 2 and a rear end assembly, and the rear end assembly is composed of a liquid chemical filter 3, an infusion liquid tube 4, a liquid flow regulator 5, a drip bucket 6, a bottle
  • the end connecting pipe 7, the bottle stopper 8 and the exhauster 9 are composed.
  • the trocar is a cannula puncturing device comprising a hose 13, a hose holder 15, a seal 14, a puncture needle 11, a needle hub 12 and an operating handle 17.
  • the hose seat 15 is a cylindrical member, the front inner cavity is a small hole 154, the rear inner cavity is a large hole 155, and the size between the two holes is excessively tapered, and the rear end of the hose 13 is inserted in the small hole.
  • the passage 154 further includes a wedge member 16 having a tapered bottle shape which is open at the front and rear ends and axially penetrates the split slot, and the front straight tube of the wedge member 16 matches the small hole 154 and Clamped between the small hole 154 and the hose 13, the rear cone of the wedge member 16 is excessively matched with the taper of the inner cavity of the hose seat 15, and the front top wedge member 16 softens the hose 13
  • the socket 15 is tightly coupled, the wedge member 16 is made of medical stainless steel or medical plastic, and the sealing member 14 is located behind the cone of the wedge member 16.
  • a total of two sliding grooves 151 are symmetrically distributed on both sides of the hose seat 15, and two operating handles 17 are respectively fixed to the needle holder 15 corresponding to the through sliding grooves 151.
  • the operating handle 17 is in the form of a pinch ear, and the two latching ears fixedly connected to the needle seat 15 constitute a double-kneading operating handle.
  • a flap 18 that is secured to the hose

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Description

管针并通式软管留置输液器 发明内容
技术领域
本发明涉及一种医疗输液器械，特别是一种管针并通式软管留置输液器。
背景技术
现有技术中的一种输液器如图 1所示，其由穿刺器1、连接管2以及后端组件组成，后端组件由药液过滤器3、输液软管4、液体流量调节器5、滴斗6、瓶端连接管7、穿瓶器8和排气器9组成。其中穿刺器1由一定长度硬质针管和操作手柄构成，在输液使用时，医务人员通常将整支针管送入病患血管中，然后利用胶带或敷贴将穿刺器固定在人体皮肤上，以免针管脱落或偏离。由于针管有一定长度，且硬直，更危险的是针尖非常锋利，限制了插针肢体的活动幅度，病患肢体需长时间保持一种姿势，非常难受。否则，在输液过程中病患肢体时常活动，极易发生针尖划伤血管内膜，引起血管发炎，尤其是婴幼儿无自控能力，更易发生输液并发症。这种置针方式发生严重拉扯输液软管时，穿刺针管偏离固定位置，针尖可能会穿破或划破血管，而引发输液并发症，如淤青、红肿等症状，病患很痛苦。这种输液器输液完成后，拔出穿刺针管，带血针管毫无保护，裸露在外，极易发生针尖刺伤医务人员，而引发血液传染病。因此，医务人员在操作时需非常小心，以保证输液安全。
发明内容
本发明的目的在于克服现有技术中的不足之处，而提供一种操作方便、对置针病患肢体要求少、使用方便、不易引发输液并发症的管针并通式软管留置输液器。
本发明的目的是通过以下途径来实现的。
管针并通式软管留置输液器，包括穿刺器、连接管以及后端组件，其组成要点在于，穿刺器是一种套管穿刺器，包括软管、软管座、密封件、穿刺针管、针座和操作手柄，软管与软管座固接，密封件安置在软管座内腔中，穿刺针管穿过密封件后含套在软管芯中，针尖露出软管前端部，穿刺针管与针座前部连通插接，针座后端与连接管连通连接，连接管与输液器后端组件组配连接，软管座是一种筒形构件，针座滑套在其内腔中，软管座侧部沿轴向延伸有一种滑动槽，操作手柄横穿此滑动槽与针座固接并组成滑动组件，操作手柄对应部可沿此滑动槽滑动，滑动组件与软管座之间具有一种止退装置，向后滑动的滑动组件被此止退装置止退时，穿刺针尖尚位于密封件之前，软管芯、穿刺针管芯以及连接管管芯组成输液通道。
使用时，首先软管和穿刺针管一起穿入血管中，连接管中见回血后，然后降低穿刺器角度，将软管继续往血管内推送，直到整根软管进入血管中，同时后撤针管，直至被止退装置止退，软管留置在血管中，打开后端组件中的流量调节器，药液通过针座后端连接管、后撤的穿刺针管，再通过软管进入病患血管中，达到输液目的。由于软管在血管中受身体温度影响而变软，一是病患置管肢体部位仍可以灵活活动，二是软化的软管端部不会损伤血管内膜，更不会穿破血管，因而不会发生输液并发症，给病患带来安全舒适的输液治疗。输液结束后，关闭流量调节器，撤出留置软管，由于针尖已退入软管座前端，没有裸露在外，因而针尖不会伤及人，而且给后续医疗垃圾处理带来极大方便和安全。
这样，以软管留置人体进行输液，一切因穿刺针管置针人体进行输液所产生的不足之处（例如：对置针病患肢体要求复杂、使用不方便、易引发输液并发症等）都不再存在；同时，与一般留置针不同的是，穿刺后，穿刺针管仅是后退隐藏于软管座内并不从其中撤除，同时还作为连通软管和连接管的输液通道。这样带来的直接好处是：可直接输液，无需如现有技术中的留置针需拔除穿刺针管后再插入输液针管进行输液，从而输液操作更快捷、简便；同时，合二为一现有技术中的穿刺针管及输液针管，使本发明的穿刺针管同时具有该二者的作用，从而简化结构；尤其重要的是，由于穿刺针管、软管以及后端组件无需脱离而可固接成一体，从而可一体式构造出厂、一体式使用，从而为确保本产品的一次性使用创造出结构上的可能。
本发明的目的还可以通过以下途径来实现。
向后滑动的滑动组件被此止退装置止退时，穿刺针尖尚位于密封件之前、软管裸露段之后的的软管座内腔中。
软管后端插接在软管座上，位于软管座以外的软管部分称为软管裸露段。
共有两个滑动槽对称分布在软管座两侧，并有两个操作手柄分别对应贯穿滑动槽均与针座固接。
操作手柄呈一种捏耳状，共同与针座固接的两个捏耳组成一种双捏耳操作手柄。
这种双捏耳操作手柄提供了另一种便于操作的方式。
关于止退装置的进一步优化是：
该止退装置是一种位于滑动槽尾端的后退障碍，这种后退障碍可以是一种突凸在滑动槽尾端的卡点，也可以是滑动槽尾端封闭。
还包括有一种逆止装置，此逆止装置安装在滑动部件与软管座之间，后退到位的滑动部件若逆向前推将与此逆止装置阻止接触。
这样，因逆止装置的阻止，后退到位的滑动部件将不能前推。从而既保证后退的穿刺针管不会再推移出伤人，也可以促使本发明所述的这种 管针并通式软管留置输液器 一次性使用。
这种逆止装置在现有技术中的针形医疗器械中常见，大多都可以应用在本发明中。本发明在此提供两种优化的逆止装置：
一种是：
该逆止装置由凸卡点和凹坑组成，该凸卡点和凹坑对应匹配设置在滑动组件及软管座上，后退时滑动组件通过弹性变形强行爬越过该凸卡点后该凸卡点陷在凹坑中，从而阻止穿刺针管前推。
另一种是：
该逆止装置由弹性卡扣和卡肩组成，弹性卡扣位于针筒上，卡肩位于滑动部件上，后退时爬过该弹性卡扣而后退到位的滑动部件其卡肩恰与弹性卡扣卡接，从而阻止穿刺针管前推。
该逆止装置的进一步优化是：
该弹性卡扣由弹性悬舌以及悬舌顶端的卡扣组成，靠近软管座滑动槽尾端沿与滑动槽平行的间隔处掏空并让此掏空在滑动槽尾端与滑动槽'U'形连穿，此'U'形中央即形成一弹性悬舌，卡扣位于此弹性悬舌顶端并突凸在滑动槽中，卡口前侧呈一种便于爬越的斜形或弧形，卡口后侧呈一种阻止爬越的尖顶形或竖直形。
这样，滑动部件上的卡肩借助卡扣前侧的形状通过下压弹性悬舌而轻松爬越此卡扣，而卡口后侧的形状则保证与卡肩形成对顶，从而阻止穿刺针管前推。
此卡肩位于操作手柄上，其具体形状或者是一种凹坑，或者是操作手柄的前侧肩。
软管座是一种筒形构件，其前部内腔为小孔道，后部内腔为大孔道，大小两孔道之间由锥形过度，软管后端插置在该小孔道中，还包括一种楔紧件，楔紧件呈一种前后端开口且轴向贯穿剖分槽的锥瓶状，楔紧件前部直筒与该小孔道匹配并夹合在该小孔道与软管之间，楔紧件后部锥筒则与软管座内腔的锥形过度匹配，前顶该楔紧件将软管与软管座紧配合连接，楔紧件或是医用不锈钢或医用塑料制成，密封件位于楔紧件锥筒的后方。
还包括一种敷翼，其固定在软管座上。
综上所述，本发明相比现有技术具有如下优点：由于软管在血管中受身体温度影响而变软，一是病患置管肢体部位仍可以灵活活动，二是软化的软管端部不会损伤血管内膜，更不会穿破血管，因而不会发生输液并发症，给病患带来安全舒适的输液治疗。输液结束撤出留置软管后，由于针尖已退入软管座前端，没有裸露在外，因而针尖不会伤及人，而且给后续医疗垃圾处理带来极大方便和安全。可直接输液，无需如现有技术中的留置针需拔除穿刺针管后再插入输液针管进行输液，从而输液操作更快捷、简便；同时，合二为一现有技术中的穿刺针管及输液针管，使本发明的穿刺针管同时具有该二者的作用，从而简化结构；尤其重要的是，由于穿刺针管、软管以及后端组件无需脱离而可固接成一体，从而可一体式构造出厂、一体式使用，从而为确保本产品的一次性使用创造出结构上的可能。
附图说明
附图1是现有技术中一种输液器的结构示意图。
附图2是本发明所述管针并通式软管留置输液器的结构示意图。
附图3是本发明实施例一中的穿刺器在待穿刺状态的结构示意图。
附图4是本发明实施例一中的穿刺器穿刺完毕待输液状态的结构示意图。
附图5是本发明实施例一中软管座结构示意立体图。
附图6是本发明实施例一中软管座结构示意立体剖视图。
附图7是本发明实施例一中滑动组件一种立体状态的结构示意立体图。
附图8是本发明实施例一中滑动组件另一种立体状态的结构示意立体图。
附图9是本发明实施例二中的穿刺器在待穿刺状态的结构示意图。
附图10是本发明最佳实施例中的穿刺器在待穿刺状态的结构示意图。
标号说明：
1 穿刺器 11穿刺针管 12针座 121连接管凸台 13软管 14密封件 15软管座 151滑动槽 152前凸卡点 153后凸卡点 154小孔道 155后孔道 16楔紧件 17操作手柄 18敷翼 171前凹坑 172后凹坑 2连接管 3药液过滤器 4输液软管 5液体流量调节器 6滴斗 7瓶端连接管 8穿瓶器 9排气器
下面结合附图对本发明进行更详尽的描述。
具体实施方式
实施例一：
参照图2，管针并通式软管留置输液器，包括穿刺器1、连接管2以及后端组件，后端组件由药液过滤器3、输液软管4、液体流量调节器5、滴斗6、瓶端连接管7、穿瓶器8和排气器9组成。
参照图3、图4，穿刺器是一种套管穿刺器，包括软管13、软管座15、密封件14、穿刺针管11、针座12和操作手柄17。
参照图5、图6，软管座15是一种前后端开口的筒形构件，其前部内腔为小孔道154，后部内腔为大孔道155，大小两孔道之间由台阶过度。软管座15侧部沿轴向延伸有一种滑动槽151，滑动槽151尾端分别前后突凸有前凸卡点152以及后凸卡点153，该前后凸卡点均与软管座一体构造。
参照图7、图8，针座12与操作手柄17连接并组成滑动组件。操作手柄17是一种板状构件，其上下两面靠近针座12处均分别设有一种前后凹坑171、172。针座12后端后伸有一种连接管凸台121。
参照图3、图4，软管13插置在小孔道154中并与软管座15固接，密封件14安置在大小孔道结合部，穿刺针管11穿过密封件14后含套在软管芯中，针尖露出软管13前端部，穿刺针管11与针座12前部连通插接，针座12后端伸出的连接管凸台121与连接管2连通连接，连接管2与输液器后端组件组配连接。针座12滑套在软管座15内腔中，操作手柄17横穿滑动槽151与针座12固接并组成滑动组件，操作手柄17对应部可沿此滑动槽151滑动，后凸卡点153与后凹坑172组成一种止退装置，向后滑动的滑动组件被此止退装置止退时，穿刺针尖尚位于密封件14之前、软管13裸露段之后的的软管座内腔中（如图4所示）。此时，前凸卡点152也陷落在前凹坑171中，前凸卡点152与前凹坑171组成 一种逆止装置，从而阻止后退到位的滑动部件逆向前推。 软管芯、穿刺针管芯以及连接管管芯组成输液通道。
使用时，首先软管13和穿刺针管11一起穿入血管中，连接管2中见回血后，然后降低穿刺器角度，将软管13继续往血管内推送，直到整根软管13进入血管中，同时后撤针管11，直至被止退装置止退，软管13留置在血管中，打开后端组件中的流量调节器，药液通过针座12后端连接管2、后撤的穿刺针管11，再通过软管13进入病患血管中，达到输液目的。输液结束后，关闭流量调节器，撤出留置软管13，由于针尖已退入软管座前端，没有裸露在外，因而针尖不会伤及人。
本实施例未述部分与现有技术相同。
实施例二：
参照图2，图9， 管针并通式软管留置输液器，包括穿刺器1、连接管2以及后端组件，后端组件由药液过滤器3、输液软管4、液体流量调节器5、滴斗6、瓶端连接管7、穿瓶器8和排气器9组成。穿刺器是一种套管穿刺器，包括软管13、软管座15、密封件14、穿刺针管11、针座12和操作手柄17。软管座15是一种筒形构件，其前部内腔为小孔道154，后部内腔为大孔道155，大小两孔道之间由锥形过度，软管13后端插置在该小孔道154中，还包括一种楔紧件16，楔紧件16呈一种前后端开口且轴向贯穿剖分槽的锥瓶状，楔紧件16前部直筒与该小孔道154匹配并夹合在该小孔道154与软管13之间，楔紧件16后部锥筒则与软管座15内腔的锥形过度匹配，前顶该楔紧件16将软管13与软管座15紧配合连接，楔紧件16或是医用不锈钢或医用塑料制成，密封件14位于楔紧件16锥筒的后方。
本实施例未述部分与实施例一相同。
最佳实施例：
参照图2、图10， 管针并通式软管留置输液器，包括穿刺器1、连接管2以及后端组件，后端组件由药液过滤器3、输液软管4、液体流量调节器5、滴斗6、瓶端连接管7、穿瓶器8和排气器9组成。穿刺器是一种套管穿刺器，包括软管13、软管座15、密封件14、穿刺针管11、针座12和操作手柄17。软管座15是一种筒形构件，其前部内腔为小孔道154，后部内腔为大孔道155，大小两孔道之间由锥形过度，软管13后端插置在该小孔道154中，还包括一种楔紧件16，楔紧件16呈一种前后端开口且轴向贯穿剖分槽的锥瓶状，楔紧件16前部直筒与该小孔道154匹配并夹合在该小孔道154与软管13之间，楔紧件16后部锥筒则与软管座15内腔的锥形过度匹配，前顶该楔紧件16将软管13与软管座15紧配合连接，楔紧件16或是医用不锈钢或医用塑料制成，密封件14位于楔紧件16锥筒的后方。 共有两个滑动槽151对称分布在软管座15两侧，并有两个操作手柄17分别对应贯穿滑动槽151均与针座15固接。操作手柄17呈一种捏耳状，共同与针座15固接的两个捏耳组成一种双捏耳操作手柄。 还包括一种敷翼18，其固定在软管座15上。
本实施例未述部分与实施例一相同。

Claims (12)

  1. 管针并通式软管留置输液器，包括穿刺器、连接管以及后端组件，其特征在于，穿刺器是一种套管穿刺器，包括软管、软管座、密封件、穿刺针管、针座和操作手柄，软管与软管座固接，密封件安置在软管座内腔中，穿刺针管穿过密封件后含套在软管芯中，针尖露出软管前端部，穿刺针管与针座前部连通插接，针座后端与连接管连通连接，连接管与输液器后端组件组配连接，软管座是一种筒形构件，针座滑套在其内腔中，软管座侧部沿轴向延伸有一种滑动槽，操作手柄横穿此滑动槽与针座固接并组成滑动组件，操作手柄对应部可沿此滑动槽滑动，滑动组件与软管座之间具有一种止退装置，向后滑动的滑动组件被此止退装置止退时，穿刺针尖尚位于密封件之前，软管芯、穿刺针管 芯以及连接管管芯组成输液通道。
  2. 根据权利要求1所述的管针并通式软管留置输液器，其特征在于，向后滑动的滑动组件被此止退装置止退时，穿刺针尖尚位于密封件之前、软管裸露段之后的的软管座内腔中。
  3. 根据权利要求1所述的管针并通式软管留置输液器，其特征在于，共有两个滑动槽对称分布在软管座两侧，并有两个操作手柄分别对应贯穿滑动槽均与针座固接。
  4. 根据权利要求3所述的管针并通式软管留置输液器，其特征在于，操作手柄呈一种捏耳状，共同与针座固接的两个捏耳组成一种双捏耳操作手柄。
  5. 根据权利要求1或2所述的管针并通式软管留置输液器，其特征在于，该止退装置是一种位于滑动槽尾端的后退障碍，这种后退障碍可以是一种突凸在滑动槽尾端的卡点，也可以是滑动槽尾端封闭。
  6. 根据权利要求1所述的管针并通式软管留置输液器，其特征在于，还包括有一种逆止装置，此逆止装置安装在滑动部件与软管座之间，后退到位的滑动部件若逆向前推将与此逆止装置阻止接触。
  7. 根据权利要求6所述的管针并通式软管留置输液器，其特征在于，该逆止装置由凸卡点和凹坑组成，该凸卡点和凹坑对应匹配设置在滑动组件及软管座上，后退时滑动组件通过弹性变形强行爬越过该凸卡点后该凸卡点陷在凹坑中，从而阻止穿刺针管前推。
  8. 根据权利要求6所述的管针并通式软管留置输液器，其特征在于，该逆止装置由弹性卡扣和卡肩组成，弹性卡扣位于针筒上，卡肩位于滑动部件上，后退时爬过该弹性卡扣而后退到位的滑动部件其卡肩恰与弹性卡扣卡接，从而阻止穿刺针管前推。
  9. 根据权利要求8所述的管针并通式软管留置输液器，其特征在于，该弹性卡扣由弹性悬舌以及悬舌顶端的卡扣组成，靠近软管座滑动槽尾端沿与滑动槽平行的间隔处掏空并让此掏空在滑动槽尾端与滑动槽'U'形连穿，此'U'形中央即形成一弹性悬舌，卡扣位于此弹性悬舌顶端并突凸在滑动槽中，卡口前侧呈一种便于爬越的斜形或弧形，卡口后侧呈一种阻止爬越的尖顶形或竖直形。
  10. 根据权利要求8所述的管针并通式软管留置输液器，其特征在于，此卡肩位于操作手柄上，其具体形状或者是一种凹坑，或者是操作手柄的前侧肩。
  11. 根据权利要求1所述的管针并通式软管留置输液器，其特征在于，软管座是一种筒形构件，其前部内腔为小孔道，后部内腔为大孔道，大小两孔道之间由锥形过度，软管后端插置在该小孔道中，还包括一种楔紧件，楔紧件呈一种前后端开口且轴向贯穿剖分槽的锥瓶状，楔紧件前部直筒与该小孔道匹配并夹合在该小孔道与软管之间，楔紧件后部锥筒则与软管座内腔的锥形过度匹配，前顶该楔紧件将软管与软管座紧配合连接，楔紧件或是医用不锈钢或医用塑料制成，密封件位于楔紧件锥筒的后方。
  12. 根据权利要求1所述的管针并通式软管留置输液器，其特征在于，还包括一种敷翼，其固定在软管座上。
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