WO2016109968A1 - 夹套式止流装置 - Google Patents

夹套式止流装置 Download PDF

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Publication number
WO2016109968A1
WO2016109968A1 PCT/CN2015/070399 CN2015070399W WO2016109968A1 WO 2016109968 A1 WO2016109968 A1 WO 2016109968A1 CN 2015070399 W CN2015070399 W CN 2015070399W WO 2016109968 A1 WO2016109968 A1 WO 2016109968A1
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Prior art keywords
elastic clip
wedge
hose
flow
sleeve
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PCT/CN2015/070399
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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 CN201580066724.9A priority Critical patent/CN107106760B/zh
Priority to PCT/CN2015/070399 priority patent/WO2016109968A1/zh
Publication of WO2016109968A1 publication Critical patent/WO2016109968A1/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

Definitions

  • the invention relates to a human external infusion device for clinical medical treatment, which is used for cutting off the external switch of the infusion channel, in particular to a jacket type stop device, which is particularly suitable for application on the hose of the infusion line.
  • an indwelling needle assembly is shown in Fig. 1.
  • the extension tube sleeve on the prior art is connected with a sheet-shaped stop clip 1, which is a commonly used stop device.
  • a wedge slot is formed in the middle of the stop clip to facilitate the extension of the tube into the stop.
  • the negative pressure will inevitably cause the blood in the blood vessel to be sucked into the indwelling catheter. After solidification, the indwelling catheter head will be blocked, the next infusion can not be performed, and the indwelling needle is lost for a long time. the goal of.
  • the medical staff In order to compensate for the backflow of blood into the indwelling catheter due to the clamping operation, after the sheet-like flow stop clamps the hose, the medical staff usually holds the hose away from the retaining clip of the indwelling catheter with one hand and the other hand.
  • the flow stop clip slides the flow stop clip toward the indwelling catheter, and the liquid in the other side of the stop clamp is driven into the indwelling catheter, and the blood in the inhalation catheter is flushed out, so that the operation can drive the sucked blood.
  • it must have quite skilled operation skills. Otherwise, the extension tube on the indwelling needle will be thinned, affecting the reinfusion, and sometimes the force will be improper.
  • the indwelling catheter will be pulled out of the body, and the indwelling catheter needs to be re-pierced. The tube will be extended due to improper operation. Pulling off, serious conditions lead to bloody hidden dangers.
  • the object of the present invention is to overcome the deficiencies in the prior art, and to provide a jacketed flow stop device which can be easily operated by one hand and which is easy to operate; a further object of the present invention is to provide a clamp The process does not create a negative pressure, a jacketed stop that prevents blood from flowing backwards.
  • the object of the present invention is achieved by the following route.
  • the jacket type stop device comprises a stop-flow elastic clip
  • the elastic clip is provided with a pipe hole and a wedge slot, and the open end of the wedge slot starts from the side of the pipe hole and along the length of the stop pin The direction extends to the other end in a wedge-shaped manner with a reduced slot.
  • the main point of the assembly is that it further includes a pusher sleeve that pushes the outer sleeve with a lumen and a through-tube hole that passes through the retaining elastic clip.
  • the elastic clip is sleeved in the inner cavity of the pusher, and the two through holes are aligned After that, the flow-through hose to be stopped can pass through the pipe hole.
  • the hose will continue to flatten until it is completely flattened to the stop state, the inner wall of the hose is closely attached to each other, the hose circulation passage is blocked; because the wedge slot slides against the hose and squeezes the hose The force is small, and the gap between the two joints is small due to the sleeve of the elastic clip and the inner cavity of the pusher sleeve, and the hose is not squeezed into a V-shaped deformation during the pinching process, and the jacket is pushed through the tube hole.
  • the hole wall contact section is always straight, so when the pinch finger is released, the hose is inelastically restored, and no negative pressure inside the hose is generated, so that the blood is not sucked into the indwelling catheter, thereby avoiding blood coagulation. Management problems.
  • reinjection is required, as long as the elastic clip is pulled out from the pusher sleeve, the hose is restrained by the pusher sleeve through the tube hole, the hose only slides toward the open end of the wedge groove, and finally slides into the elastic clip through the tube hole. In the middle, the hose is cut off, the elastic deformation is restored by itself, and the circulation passage is opened again, and the liquid can be infused.
  • the object of the present invention can also be achieved by the following means.
  • the elastic clip slides in a clearance fit to push the inner cavity of the outer sleeve.
  • This clearance fit mode limits the freedom of movement of the elastic clips in the direction of pinching, and limits other degrees of freedom of movement, thereby ensuring that the elastic clips do not oscillate in the inner cavity of the pusher, and further ensure The hose will not be squeezed into a V-shape during the pinching process.
  • the pusher inner cavity tail section has a wedge-shaped cavity, and the wedge-shaped cavity has a wedge-shaped direction corresponding to the wedge-shaped direction of the elastic clip wedge-shaped slot.
  • the end of the elastic clip enters the wedge-shaped cavity, so that the elastic clip is restrained due to the degree of opening of the hose wedge, and the clamp can be overcome by the multiple clamping of the elastic clip.
  • the piece loses a certain clamping force, which is conducive to the end of the hose.
  • the inner cavity of the outer casing is a blind hole, and the elastic clip is inserted into the blind hole.
  • the outer end surface of the blind hole end and the exposed end surface of the elastic clip are the one-handed pinching operation surface.
  • the inner cavity of the outer casing is a perforation, and the elastic clip is sleeved in the perforation, and a pull ear is protruded from the upper and lower sides of the outer casing.
  • the exposed end surface of the pull ear and the elastic clip is a single-handed pinching operation surface.
  • the elastic clip is provided with a convex card, and the push sleeve is arranged at the cut-off end of the hose correspondingly with a matching socket matched with the convex card.
  • the card socket is either a card slot or a through window opening in which the male card is trapped at the hose cutoff.
  • the convex card and the snap-in configuration of the socket are a conventional configuration, which forms an elastic snap to limit the relative position of the elastic clip and the push sleeve at the hose cut-off to prevent the clamped stop hose Due to the physical activity of the patient, the hose is pulled out of the wedge-shaped groove of the elastic clip. The operation of external forces can easily let them trip.
  • the fenestration hole is provided with a broken slot by pushing the open end of the outer casing.
  • the present invention has the following advantages over the prior art: the operating hose can be clamped by one hand, and the operation and use are convenient, and the clamping process does not generate negative pressure, which can prevent blood from flowing backward, and at the same time, the flow stopping mode and the conventional method
  • the stop clips are the same in the same way, which is more convenient for promotion.
  • FIG. 1 is a schematic view of an indwelling needle assembly of the prior art.
  • Fig. 2 is a schematic perspective view showing the structure of the jacket type flow stop device in the state in which the hose is in circulation according to the first embodiment of the present invention.
  • Fig. 3 is a schematic perspective view showing the structure of the pusher casing in the axial direction of the jacket type flow stop device according to the first embodiment of the present invention.
  • FIG. 4 is a schematic perspective view showing the structure of another axial direction of the pusher jacket in the jacket type flow stop device according to the first embodiment of the present invention.
  • Fig. 5 is a schematic perspective cross-sectional view showing the structure of a pusher jacket in the jacket type flow stop device according to the first embodiment of the present invention.
  • Fig. 6 is a schematic perspective view showing the structure of the axial stop of the retaining elastic clip in the jacket type flow stop device according to the first embodiment of the present invention.
  • Fig. 7 is a schematic perspective view showing the structure of another axial direction of the pusher jacket in the jacket type flow stopping device according to the first embodiment of the present invention.
  • Fig. 8 is a schematic perspective view showing the structure of the jacket type flow stopping device in the state in which the hose is closed in the first embodiment of the present invention.
  • Fig. 9 is a schematic perspective cross-sectional view showing the structure of the jacket type flow stop device in the state in which the hose is in an off state according to the first embodiment of the present invention.
  • Fig. 10 is a schematic perspective view showing the structure of the jacket type flow stop device according to the second embodiment of the present invention in a state in which the hose is in circulation.
  • Figure 11 is a schematic perspective view showing the structure of the axial stop of the retaining elastic clip in the jacket type flow stop device according to the second embodiment of the present invention.
  • Figure 12 is a schematic perspective view showing the structure of the axial stop of the retaining elastic clip in the jacket type flow stop device according to the second embodiment of the present invention.
  • Figure 13 is a schematic perspective view showing the structure of the pusher casing in the axial direction of the jacket type flow stop device according to the second embodiment of the present invention.
  • Fig. 14 is a schematic perspective cross-sectional view showing the axial direction of the pusher sleeve in the jacket type flow stop device according to the second embodiment of the present invention.
  • Fig. 15 is a schematic perspective view showing the structure of the jacket-type flow stop device according to the second embodiment of the present invention in a state in which the hose is in an off state.
  • Fig. 16 is a schematic perspective cross-sectional view showing the structure of the jacket type flow stop device according to the second embodiment of the present invention in a state in which the hose is in an off state.
  • Figure 17 is a schematic perspective view showing the structure of a pusher jacket in the jacket type flow stop device according to the third embodiment of the present invention.
  • Figure 18 is a schematic perspective view showing the structure of a flow-stop elastic clip in the jacket type flow stop device according to the fourth embodiment of the present invention.
  • Fig. 19 is a schematic perspective view showing the structure of a pusher jacket in the jacket type flow stop device according to the fourth embodiment of the present invention.
  • Fig. 20 is a schematic perspective view showing the structure of the jacket type flow stop device in the state in which the hose is closed in the fourth embodiment of the present invention.
  • Figure 21 is a schematic perspective view showing the structure of a flow-stop elastic clip in the jacket type flow stop device of the preferred embodiment of the present invention.
  • Figure 22 is a schematic perspective view showing the structure of the pusher casing in the axial direction of the jacket type flow stop device according to the preferred embodiment of the present invention.
  • Figure 23 is a perspective view showing the structure of another axial direction of the pusher jacket in the jacket type flow stop device of the preferred embodiment of the present invention.
  • Figure 24 is a schematic perspective view showing the structure of the jacket type flow stop device in the cut-off state of the hose according to the preferred embodiment of the present invention.
  • a jacketed flow stop device includes a stop-flow elastic clip 1 and a pusher casing 2.
  • the elastic clip 1 is inserted into the inner cavity of the pusher 2.
  • the elastic clip 1 is composed of a sheet-like clip 1.1 and a gripping surface 1.2.
  • the sheet-like clip 1.1 is provided with a through-hole 1.4 and a wedge-shaped slit 1.3, and the open end of the wedge-shaped slit 1.3
  • the pinching surface 1.2 is provided with a bump 1.5 for easy operation.
  • the pusher sleeve 2 has a sleeve body 2.1 and a cavity 2.4 corresponding to the section of the sheet-shaped clip body 1.1.
  • the sleeve body 2.1 has a through-hole 2 through which the tube hole 2.2 is transversely inserted.
  • the through-holes 1.4 of the flow-stop elastic clips are correspondingly arranged, and after the two through-holes are aligned, the flow-through hose to be stopped can pass through the through-holes.
  • the elastic clip 1 slides in a clearance fit to push the inner cavity of the outer sleeve.
  • the two sides of the sleeve body 2.1 are provided with a non-slip step strip 2.3 for easy handling.
  • the outer end surface 2.5 of the end is an operation surface that facilitates pinching with one hand and one hand.
  • the inner end portion of the pusher sleeve 2 has a wedge-shaped cavity 2.6 whose wedge-shaped direction corresponds to the wedge-shaped direction of the elastic clip wedge-shaped slot 1.3.
  • the elastic clip 1 is inserted into the inner cavity of the pusher casing 2, at which time the two through-holes are aligned, and the flow-through hose to be stopped passes through the pipe-through hole, and the circulation hose is in a flow state.
  • the flow stop device is in an off state, the tail end of the elastic clip 1 enters the wedge cavity 2.6, and the arrangement of the wedge cavity 2.6 causes the elastic clip 1 to be restrained due to the degree of opening of the hose wedge clip Moreover, it can overcome the loss of a certain clamping force of the clip due to multiple clamping and loosening of the elastic clip, which is beneficial to the end stop of the hose.
  • the elastic clip is inserted and pushed.
  • the inner cavity of the outer casing is offset, and the closing operation of the circulation passage is completed. Since the sliding fit between the wide plane on both sides of the elastic clip and the wide plane of the rectangular inner cavity of the push sleeve is relatively small, and the thickness of the outer shell wall is relatively thin, during the deformation process of the push hose, the wall contact of the outer tube hole of the outer sleeve is pushed and The hose contact surface is small, the hose is flat and deformed in the wedge groove, and the wall of the hose section on both sides of the elastic clip has a great bending strength, and is not squeezed into a V-shaped deformation, and pushes the jacket through the tube hole.
  • the wall contact section is always straight, so when the finger is released and the hose is inelastically restored, the negative pressure inside the hose will not occur, so that the blood will not be sucked into the indwelling catheter, and the blood coagulation is prevented. problem.
  • the hose When reinjection is required, as long as the elastic clip is pulled out from the pusher sleeve, the hose is restrained by the pusher sleeve through the tube hole, the hose only slides toward the open end of the wedge groove, and finally slides into the elastic clip through the tube hole. In the middle, the hose is cut off, the elastic deformation is restored by itself, and the circulation passage is opened again, and the liquid can be infused.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the jacket type stop device pushes the inner cavity of the outer casing 2 into a perforation, and the elastic clip 1 is sleeved in the perforation, and the upper and lower sides of the outer casing are respectively extended by a lug 2.8.
  • the ear 2.8 and the exposed end face of the elastic clip are the one-handed and pinched operation surface.
  • the thumb is against the pinching surface 1.2 of the elastic clip 1 in the direction in which the hose is to be moved, and the index finger and the middle finger respectively hook the symmetrical pull ear 2.8 on the pusher sleeve 2, and the pinch can be gently pressed to realize the hose.
  • the circulation channel is closed and opened.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the jacket type stop device pushes the upper and lower sides of the outer casing 2 to project two lugs 2.8, which is a symmetrical four-ear structure, the lug 2.8 and the exposed end face of the elastic clip are one-handed The operation surface for pinching.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • a jacket type stop device is provided with a convex card 1.3.1 on the elastic clip 1, and the push sleeve 2 is correspondingly arranged at the hose cut-off portion to match the convex card 1.3.1.
  • the card socket 2.7 is a through window opening. At the hose cut-off, the convex card 1.3.1 is trapped in the socket 2.7.
  • the convex card and the snap-in configuration of the socket are a conventional configuration, which forms an elastic snap to limit the relative position of the elastic clip and the push sleeve at the hose cut-off to prevent the clamped stop hose Due to the physical activity of the patient, the hose is pulled out of the wedge-shaped groove of the elastic clip. The operation of external forces can easily let them trip.
  • the opening perforation 2.7 is provided with a broken slot 2.7.1, 2.7.2 by pushing the open end of the outer casing.
  • the slits 2.7.1 and 2.7.2 are broken, so that the wall of the casing contacting the convex card is more elastic, and the buckle and the tripping are more convenient.
  • the convex card 1.3.1 and the socket 2.7 are respectively disposed on the two wide sides of the elastic clip 1 and on the two wide sides of the pusher 2.
  • a jacket type stop device the convex card 1.3.1 is disposed on two narrow sides of the elastic clip 1, and the socket 2.7 is correspondingly disposed on the two narrow sides of the push outer casing 2. on.

Abstract

公开了一种夹套式止流装置，包括止流弹性夹片(1)，弹性夹片(1)上设置有过管孔(1.4)以及楔形槽缝(1.3)，楔形槽缝(1.3)开口端起始于过管孔(1.4)一侧，并沿着止流夹长度方向以槽缝减小的楔形方式向另一端延伸，其组成要点在于：还包括推动外套(2)，推动外套(2)具有内腔(2.4)以及贯穿的过管孔(2.2)，此过管孔(2.2)与止流弹性夹片的过管孔(1.4)对应设置，弹性夹片(1)套设在此推动外套内腔(2.4)中，两个过管孔对齐后，待止流的流通软管可穿过此过管孔。该夹套式止流装置可单手夹持操作软管，且夹持过程不会产生负压，可防止血液倒流。

Description

夹套式止流装置 技术领域
本发明涉及临床医疗上一种人体外输液器械，用于截止输液通道的管外开关，特别是一种夹套式止流装置，它尤其适合应用在输注管路的软管上。
背景技术
现有技术中一种留置针组件如图1所示，其上的延长管外套接有片状止流夹1，该止流夹就是一种常用的止流装置。止流夹中间开有楔形槽缝，便于延长管卡入止流。使用时需两只手分别轻捏止流夹两边延长管，再用拇指推进止流夹，将延长管夹住止流。由于延长管受到手指捏压，管内液体必然被挤出进入血管，而手指一旦放开，延长管靠自身弹性恢复形状，管腔空间增大而产生负压。如果此止流夹是应用在留置针上，此负压必然导致血管中血液被倒吸入留置导管中，凝固后会造成留置导管头部被堵，无法进行下一次输液，失去了留置针长期留置的目的。为了弥补因夹持操作而导致的血液倒流进留置导管，在片状止流夹夹住软管后，医务人员通常一手捏住远离留置导管的止流夹一侧软管，另一手捏住片状止流夹，往留置导管方向滑动止流夹，将止流夹另一侧软管内液体赶入留置导管内，冲出倒吸入导管内血液，这样操作虽能达到驱赶倒吸的血液，但须有相当熟练操作技巧，不然时常会将留置针上延长管拉细，影响再次输液，甚至有时用力不当，会将留置导管拔出人体，需要重新穿刺留置导管，由于操作不当，将延长管拉断，严重情况导致溢血隐患。
发明内容
本发明的目的在于克服现有技术中的不足之处，而提供一种可单手夹持操作软管，操作使用方便的夹套式止流装置；本发明的进一步目的在于提供一种夹持过程不会产生负压，可防止血液倒流的夹套式止流装置。
本发明的目的是通过以下途径来实现的。
夹套式止流装置，包括一种止流弹性夹片，弹性夹片上设置有过管孔以及楔形槽缝，楔形槽缝开口端起始于过管孔一侧，并沿着止流夹长度方向以槽缝减小的楔形方式向另一端延伸，其组成要点在于：还包括一种推动外套，推动外套具有内腔以及贯穿的过管孔，此过管孔与止流弹性夹片的过管孔对应设置，弹性夹片套设在此推动外套内腔中，两个过管孔对齐 后，待止流的流通软管可穿过此过管孔。
这样，当输液结束，只需单手拇指和食指分别捏住止流弹性夹片和推动外套，轻轻用力对捏，弹性夹片顺着推动外套内腔滑动，过管孔中软管段受到两者挤压，软管一侧受到推动外套过管孔限位顶住，另一侧对着弹性夹片中间楔形槽，受压变扁挤入楔形槽，随着弹性夹片和推动外套继续相对移动，软管也继续变扁，直至完全变扁至止流状态，软管内腔壁相互紧密相贴，软管流通通道被截止；由于楔形槽缝相对软管滑动并挤压软管的力量较小，且由于弹性夹片与推动外套内腔的套接使得二者结合部的间隙较小，在对捏的过程中软管不会被挤成V字变形，与推动外套过管孔孔壁接触段始终保持笔直，因而当放开捏压手指，软管无弹性恢复，也就不会产生软管内负压，这样血液也不会被倒吸入留置导管内，避免了血液凝固堵管问题。当要再次输液时，只要将弹性夹片从推动外套中往外拉出，这时软管受推动外套过管孔约束，软管只有滑向楔形槽开口端，最后滑入弹性夹片过管孔中，软管截止打开，靠自身弹性恢复变形，流通通道重新被打开，就可以输液了。
本发明的目的还可以通过以下途径来实现。
弹性夹片以间隙配合方式滑套在在此推动外套内腔中。
这种间隙配合方式在确保弹性夹片沿对捏方向的移动自由度外，限制了其他的运动自由度，从而确保了弹性夹片不会在推动外套内腔中产生摆动等，也进一步确保了在对捏的过程中软管不会被挤成V字变形。
推动外套内腔尾段具有楔形腔，此楔形腔的楔形方向与弹性夹片楔形槽缝的楔形方向对应。
当止流装置处于截止状态时，弹性夹片尾端进入楔形腔，使得弹性夹片因软管楔入夹片张开程度受到约束，而且可以克服因弹性夹片多次夹紧松开而令夹片失去一定夹紧力，利于软管截止止流。
推动外套内腔是一种盲孔，弹性夹片插套在此盲孔中，盲孔端的外端面以及弹性夹片外露的端面为单手对捏的操作面。
也可以是这样：
推动外套内腔是一种穿孔，弹性夹片穿套在此穿孔中，推动外套上下两侧面各伸出一拉耳，此拉耳以及弹性夹片外露的端面为单手对捏的操作面。
弹性夹片上设置有一种凸卡，推动外套于软管截止处对应设置有与此凸卡匹配的卡窝， 此卡窝或者是一种卡槽或者是一种贯穿的开窗孔，于软管截止处，凸卡陷落在此卡窝中。
此凸卡以及卡窝的卡触构造是一种常规的构造，其形成弹性卡触以对软管截止处的弹性夹片和推动外套的相对位置进行限位，防止已夹紧止流软管因病患肢体活动，而令软管受到拉扯从弹性夹片的楔形槽中滑出。而外力的操作，又可轻易让他们脱扣。
开窗孔靠推动外套壳体开口端设置一断裂槽缝。
这样因此断裂槽缝使得与凸卡接触的壳体壁更具弹性，卡扣和脱扣将更加方便。
综上所述，本发明相比现有技术具有如下优点：可单手夹持操作软管，操作使用方便，且夹持过程不会产生负压，可防止血液倒流，同时止流方式与常规的止流夹方式相同，更便于推广使用。
附图说明
图1是现有技术中一种留置针组件示意图。
图2是本发明实施例一所述夹套式止流装置处于软管流通状态的结构示意立体图。
图3是本发明实施例一所述夹套式止流装置中的推动外套一种轴测方向的结构示意立体图。
图4是本发明实施例一所述夹套式止流装置中的推动外套另一种轴测方向的结构示意立体图。
图5是本发明实施例一所述夹套式止流装置中的推动外套结构示意立体剖视图。
图6是本发明实施例一所述夹套式止流装置中的止流弹性夹片一种轴测方向的结构示意立体图。
图7是本发明实施例一所述夹套式止流装置中的推动外套另一种轴测方向的结构示意立体图。
图8是本发明实施例一所述夹套式止流装置处于软管截止状态的结构示意立体图。
图9是本发明实施例一所述夹套式止流装置处于软管截止状态的结构示意立体剖视图。
图10是本发明实施例二所述夹套式止流装置处于软管流通状态的结构示意立体图。
图11是本发明实施例二所述夹套式止流装置中的止流弹性夹片一种轴测方向的结构示意立体图。
图12是本发明实施例二所述夹套式止流装置中的止流弹性夹片一种轴测方向的结构示意立体图。
图13是本发明实施例二所述夹套式止流装置中的推动外套一种轴测方向的结构示意立体图。
图14是本发明实施例二所述夹套式止流装置中的推动外套一种轴测方向的结构示意立体剖视图。
图15是本发明实施例二所述夹套式止流装置处于软管截止状态的结构示意立体图。
图16是本发明实施例二所述夹套式止流装置处于软管截止状态的结构示意立体剖视图。
图17是本发明实施例三所述夹套式止流装置中的推动外套的结构示意立体图。
图18是本发明实施例四所述夹套式止流装置中的止流弹性夹片的结构示意立体图。
图19是本发明实施例四所述夹套式止流装置中的推动外套的结构示意立体图。
图20是本发明实施例四所述夹套式止流装置处于软管截止状态的结构示意立体图。
图21是本发明最佳实施例所述夹套式止流装置中的止流弹性夹片的结构示意立体图。
图22是本发明最佳实施例所述夹套式止流装置中的推动外套一种轴测方向的结构示意立体图。
图23是本发明最佳实施例所述夹套式止流装置中的推动外套另一种轴测方向的结构示意立体图。
图24是本发明最佳实施例所述夹套式止流装置处于软管截止状态的结构示意立体图。
下面结合附图对本发明进行更详尽的描述。
具体实施方式
实施例1：
参照图2、图8和图9，夹套式止流装置，包括一种止流弹性夹片1和一种推动外套2。弹性夹片1插套在推动外套2的内腔中。
参照图6和图7，弹性夹片1由片状夹体1.1和捏持面1.2组成，片状夹体1.1上设置有过管孔1.4以及楔形槽缝1.3，楔形槽缝1.3开口端起始于过管孔1.4一侧，并沿着夹体1.1长度方向以槽缝减小的楔形方式向另一端延伸，捏持面1.2上设置有便于操作的凸点1.5。
参照图3、图4和图5，,推动外套2具有套体2.1以及与片状夹体1.1断面对应的内腔2.4，套体2.1上横向贯穿有过管孔2.2，此过管孔2.2与止流弹性夹片的过管孔1.4对应设置，两个过管孔对齐后，待止流的流通软管可穿过此过管孔。弹性夹片1以间隙配合方式滑套在在此推动外套内腔中。套体2.1两宽侧面上设置有防滑的阶梯条2.3，便于操持。盲孔 端的外端面2.5为便于单手单手对捏的操作面。推动外套2内腔尾段具有楔形腔2.6，此楔形腔2.6的楔形方向与弹性夹片楔形槽缝1.3的楔形方向对应。
参照图2，弹性夹片1插套在推动外套2的内腔中，此时两个过管孔对齐，待止流的流通软管穿过此过管孔，流通软管处于流通状态。
参照图8和图9，此时，止流装置处于截止状态，弹性夹片1尾端进入楔形腔2.6，楔形腔2.6的设置使得弹性夹片1因软管楔入夹片张开程度受到约束，而且可以克服因弹性夹片多次夹紧松开而令夹片失去一定夹紧力，利于软管截止止流。
当输液结束，只需单手拇指和食指分别捏住止流装置两端操作面2.5和1.2，轻轻用力对捏，弹性夹片顺着推动外套内腔滑动，过管孔中软管段受到两者挤压，软管一侧受到推动外套过管孔限位顶住，另一侧对着弹性夹片中间楔形槽，受压变扁挤入楔形槽，随着弹性夹片和推动外套继续相对移动，软管也继续变扁，直至完全变扁被推到楔形槽尾端截止位，软管内腔壁相互紧密相贴，软管流通通道被截止，这时弹性夹片插入端与推动外套内腔底相抵，流通通道截止操作结束。由于弹性夹片两侧宽平面与推动外套矩形内腔宽平面之间滑动配合间隙比较小，且推动外套壳壁厚度比较薄，在推动软管变形过程中，推动外套过管孔孔壁接触与软管接触面很小，软管在楔形槽中挤压扁平变形，弹性夹片两侧的软管段壁体弯曲强度很大，不会被挤成V字变形，与推动外套过管孔孔壁接触段始终保持笔直，因而当放开捏压手指，软管无弹性恢复，也就不会产生软管内负压，这样血液也不会被倒吸入留置导管内，避免了血液凝固堵管问题。当要再次输液时，只要将弹性夹片从推动外套中往外拉出，这时软管受推动外套过管孔约束，软管只有滑向楔形槽开口端，最后滑入弹性夹片过管孔中，软管截止打开，靠自身弹性恢复变形，流通通道重新被打开，就可以输液了。
本实施例未述部分与现有技术相同。
实施例二：
参照图10-图16，夹套式止流装置，推动外套2内腔是一种穿孔，弹性夹片1穿套在此穿孔中，推动外套上下两侧面各伸出一拉耳2.8，此拉耳2.8以及弹性夹片外露的端面为单手对捏的操作面。
操作时，拇指抵住软管要运动方向的弹性夹片1上捏持面1.2，食指和中指分别勾住推动外套2上对称拉耳2.8，轻轻用力对捏即可，就可实现软管流通通道截止与打开。
本实施例未述部分与实施例一相同。
实施例三：
参照图17，夹套式止流装置，推动外套2上下两侧面各伸出二拉耳2.8，这是一种对称四拉耳的构造，此拉耳2.8以及弹性夹片外露的端面为单手对捏的操作面。
本实施例未述部分与实施例二相同。
实施例四：
参照图18、图19和图20，夹套式止流装置，弹性夹片1上设置有一种凸卡1.3.1，推动外套2于软管截止处对应设置有与此凸卡1.3.1匹配的卡窝，此卡窝2.7是一种贯穿的开窗孔，于软管截止处，凸卡1.3.1陷落在此卡窝2.7中。
此凸卡以及卡窝的卡触构造是一种常规的构造，其形成弹性卡触以对软管截止处的弹性夹片和推动外套的相对位置进行限位，防止已夹紧止流软管因病患肢体活动，而令软管受到拉扯从弹性夹片的楔形槽中滑出。而外力的操作，又可轻易让他们脱扣。
参照图19，开穿孔2.7靠推动外套壳体开口端设置一断裂槽缝2.7.1、2.7.2。这样因此断裂槽缝2.7.1、2.7.2使得套体上与凸卡接触的壳体壁更具弹性，卡扣和脱扣将更加方便。
上述凸卡1.3.1以及卡窝2.7分别设置在弹性夹片1的两宽侧面上以及推动外套2的两宽侧面上。
本实施例未述部分与实施例一相同。
最佳实施例：
参照图21、图22、图23和图24，夹套式止流装置，凸卡1.3.1设置在弹性夹片1两窄侧面上，卡窝2.7则对应设置在推动外套2的两窄侧面上。
本实施例未述部分与实施例四相同。

Claims (7)

  1. 夹套式止流装置，包括一种止流弹性夹片，弹性夹片上设置有过管孔以及楔形槽缝，楔形槽缝开口端起始于过管孔一侧，并沿着止流夹长度方向以槽缝减小的楔形方式向另一端延伸，其特征在于，还包括一种推动外套，推动外套具有内腔以及贯穿的过管孔，此过管孔与止流弹性夹片的过管孔对应设置，弹性夹片套设在此推动外套内腔中，两个过管孔对齐后，待止流的流通软管可穿过此过管孔。
  2. 根据权利要求1所述的夹套式止流装置，其特征在于，弹性夹片以间隙配合方式滑套在在此推动外套内腔中。
  3. 根据权利要求1所述的夹套式止流装置，其特征在于，推动外套内腔尾段具有楔形腔，此楔形腔的楔形方向与弹性夹片楔形槽缝的楔形方向对应。
  4. 根据权利要求1或3所述的夹套式止流装置，其特征在于，推动外套内腔是一种盲孔，弹性夹片插套在此盲孔中，盲孔端的外端面以及弹性夹片外露的端面为单手对捏的操作面。
  5. 根据权利要求1或3所述的夹套式止流装置，其特征在于，推动外套内腔是一种穿孔，弹性夹片穿套在此穿孔中，推动外套上下两侧面各伸出一拉耳，此拉耳以及弹性夹片外露的端面为单手对捏的操作面。
  6. 根据权利要求1所述的夹套式止流装置，其特征在于，弹性夹片上设置有一种凸卡，推动外套于软管截止处对应设置有与此凸卡匹配的卡窝，此卡窝或者是一种卡槽或者是一种贯穿的开窗孔，于软管截止处，凸卡陷落在此卡窝中。
  7. 根据权利要求6所述的夹套式止流装置，其特征在于，开窗孔靠推动外套壳体开口端设置一断裂槽缝。
PCT/CN2015/070399 2015-01-09 2015-01-09 夹套式止流装置 WO2016109968A1 (zh)

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