技术领域technical field
本发明涉及医用领域，尤其涉及一种用于导管组件的引入针保护装置、导管组件及留置针。The invention relates to the medical field, in particular to an introduction needle protection device for a catheter assembly, a catheter assembly and an indwelling needle.
背景技术Background technique
血管内导管用于将流体输入至患者体内、将流体从患者体内退出、或者用于监控患者血管系统的各种参数。典型地，用引入针将导管引入患者血管内。导管被安装在具有尖锐的远端尖端的引入针上，导管的至少远端部分紧紧接合引入针的外表面以便在将引入针插入血管期间阻止导管的剥离。Intravascular catheters are used to infuse fluids into, withdraw fluids from a patient, or to monitor various parameters of a patient's vasculature. Typically, an introducing needle is used to introduce the catheter into the patient's blood vessel. The catheter is mounted on an introducer needle having a sharpened distal tip, at least a distal portion of the catheter tightly engaging the outer surface of the introducer needle to prevent stripping of the catheter during insertion of the introducer needle into a blood vessel.
临床医师通过患者皮肤将引入针插入至患者血管内。一旦观测到回血，便将导管完全插入血管内，而后引入针从导管中退出，并将导管固定在适当位置上。一旦引入针从导管中退出，引入针就包括“被血污染的尖端”并且必须被合适地处理。The clinician inserts the introducer needle through the patient's skin into the patient's blood vessel. Once blood return is observed, the catheter is fully inserted into the vessel, and the introducer needle is withdrawn from the catheter, securing the catheter in place. Once the introducer needle is withdrawn from the catheter, the introducer needle includes a "blood-contaminated tip" and must be properly disposed of.
最近几年，对于被血污染的尖端引起的意外针刺伤尤为关注。尽管意识到需要合适地处理被血污染的尖端，但是，被污染的引入针意外刺伤的现象仍旧发生，例如在紧急情况下，或者由于未注意或忽略造成引入针刺伤现象。In recent years, there has been particular concern about accidental needlestick injuries from blood-contaminated tips. Despite the recognized need to properly dispose of blood-contaminated tips, accidental sticks from contaminated introduction needles still occur, for example, in emergency situations, or due to inattention or neglect.
为了解决上述问题，目前已经提出了各种针尖护罩。除了避免临床医师被针意外刺伤外，针尖护罩还使得在导管插入过程中暴露血的现象最小化。In order to solve the above-mentioned problems, various needle tip shields have been proposed so far. In addition to protecting the clinician from accidental needle stick injuries, the needle tip shield minimizes exposure of blood during catheterization.
但是，目前的针尖护罩的结构较复杂，且存在稳定性问题。However, the structure of the current needle tip shield is relatively complicated, and there are stability problems.
发明内容Contents of the invention
本发明的目的在于提供一种导管组件的引入针保护装置、导管组件及留置针，其结构简单，且可将引入针尖端稳定保持在护罩内。The object of the present invention is to provide an introduction needle protection device for a catheter assembly, a catheter assembly and an indwelling needle, which have a simple structure and can stably keep the tip of the introduction needle in the shield.
为实现上述发明目的，本发明一实施方式提供一种用于导管组件的引入针保护装置，所述导管组件具有引入针、导管及导管座，所述导管位于所述导管座的远端，所述引入针插入/拔出所述导管及所述导管座，所述引入针保护装置包括：In order to achieve the purpose of the above invention, one embodiment of the present invention provides an introduction needle protection device for a catheter assembly, the catheter assembly has an introduction needle, a catheter and a catheter adapter, the catheter is located at the distal end of the catheter adapter, the The introduction needle is inserted/extracted from the catheter and the catheter adapter, and the introduction needle protection device includes:
护罩，其可拆卸地与所述导管座的内表面配合，且所述护罩内部形成一容纳腔；a shield, which is detachably matched with the inner surface of the catheter adapter, and a receiving cavity is formed inside the shield;
卡持件，其位于所述容纳腔内；a holding member, which is located in the accommodating cavity;
其中，所述引入针的远端具有尖端，且所述引入针上具有回血槽，当所述引入针拔出完成时，所述卡持件限位于所述回血槽内而使得所述尖端始终保持在所述护罩内。Wherein, the distal end of the introduction needle has a tip, and the introduction needle has a blood return groove, and when the introduction needle is pulled out, the holding member is limited in the blood return groove so that the tip is always remain within the shield.
作为本发明一实施方式的进一步改进，所述卡持件包括至少一卡爪，所述卡爪具有弹性，当所述回血槽到达所述卡持件处时，所述卡爪的远端端部朝向所述回血槽运动而限位于所述回血槽内。As a further improvement of an embodiment of the present invention, the holding member includes at least one claw, and the claw is elastic. When the blood return groove reaches the holding member, the distal end of the claw The part moves toward the blood return groove and is confined in the blood return groove.
作为本发明一实施方式的进一步改进，所述卡持件还包括底座，所述卡持件包括间隔分布在所述底座远端的若干卡爪。As a further improvement of an embodiment of the present invention, the holding member further includes a base, and the holding member includes several claws distributed at intervals on the distal end of the base.
作为本发明一实施方式的进一步改进，所述底座具有一贯穿孔，若干卡爪的远端端部围设成一开口，所述引入针穿过所述贯穿孔及所述开口而与所述卡持件相互配合。As a further improvement of an embodiment of the present invention, the base has a through hole, and the distal ends of several claws are surrounded by an opening, and the introduction needle passes through the through hole and the opening to connect with the clamp. The holders cooperate with each other.
作为本发明一实施方式的进一步改进，当所述卡持件位于所述容纳腔内时，所述贯穿孔的中心与所述开口的中心的连线方向与所述引入针的拔出方向一致。As a further improvement of an embodiment of the present invention, when the holding member is located in the accommodating cavity, the direction of the line connecting the center of the through hole and the center of the opening is consistent with the pull-out direction of the introduction needle .
作为本发明一实施方式的进一步改进，所述底座的外轮廓呈圆形，若干卡爪环绕所述底座的周缘设置。As a further improvement of an embodiment of the present invention, the outer contour of the base is circular, and several claws are arranged around the periphery of the base.
作为本发明一实施方式的进一步改进，所述容纳腔呈圆柱状，所述容纳腔的内径与所述底座的外径相等。As a further improvement of an embodiment of the present invention, the accommodating cavity is cylindrical, and the inner diameter of the accommodating cavity is equal to the outer diameter of the base.
作为本发明一实施方式的进一步改进，于所述引入针拔出方向上，所述容纳腔具有第一长度，所述卡持件具有第二长度，所述第一长度大于所述第二长度。As a further improvement of an embodiment of the present invention, in the pulling-out direction of the introduction needle, the accommodating cavity has a first length, the holding member has a second length, and the first length is greater than the second length .
为实现上述发明目的，本发明一实施方式提供一种导管组件，包括引入针、导管、导管座及如上任意一项技术方案所述的引入针保护装置，所述导管位于所述导管座的远端，所述引入针插入/拔出所述导管及所述导管座，所述引入针保护装置与所述导管座可拆卸的配合。In order to achieve the purpose of the above invention, one embodiment of the present invention provides a catheter assembly, including an introduction needle, a catheter, a catheter adapter, and the introduction needle protection device described in any one of the above technical solutions, the catheter is located at the far end of the catheter adapter. end, the introduction needle is inserted/extracted from the catheter and the catheter adapter, and the introduction needle protection device is detachably matched with the catheter adapter.
为实现上述发明目的，本发明一实施方式提供一种留置针，包括如上所述的导管组件。To achieve the purpose of the above invention, an embodiment of the present invention provides an indwelling needle, including the catheter assembly as described above.
与现有技术相比，本发明的有益效果在于：本发明一实施方式通过卡持件与回血槽的配合实现引入针尖端的限位，结构简单，且可将引入针尖端稳定保持在护罩内。Compared with the prior art, the present invention has the beneficial effect that: in one embodiment of the present invention, the position of the tip of the introduction needle is realized through the cooperation of the clamping part and the blood return groove, the structure is simple, and the tip of the introduction needle can be stably kept in the shield Inside.
附图说明Description of drawings
图1是本发明一实施方式的留置针结构示意图；Fig. 1 is a schematic structural view of an indwelling needle according to an embodiment of the present invention;
图2是本发明一实施方式的引入针插入状态示意图；Fig. 2 is a schematic diagram of an insertion state of an introduction needle according to an embodiment of the present invention;
图3是本发明一实施方式的引入针、护罩、卡持件爆炸图；Fig. 3 is an exploded view of an introduction needle, a shield, and a holding member according to an embodiment of the present invention;
图4是本发明一实施方式的引入针拔出状态示意图；Fig. 4 is a schematic diagram of the pull-out state of the introduction needle according to an embodiment of the present invention;
图5是本发明一实施方式的引入针保护装置示意图；5 is a schematic diagram of an introduction needle protection device according to an embodiment of the present invention;
图6是本发明一实施方式的卡持件示意图；Fig. 6 is a schematic diagram of a clip according to an embodiment of the present invention;
图7是本发明一实施方式的卡持件爆炸图。Fig. 7 is an exploded view of a clip according to an embodiment of the present invention.
具体实施方式detailed description
以下将结合附图所示的具体实施方式对本发明进行详细描述。但这些实施方式并不限制本发明，本领域的普通技术人员根据这些实施方式所做出的结构、方法、或功能上的变换均包含在本发明的保护范围内。The present invention will be described in detail below in conjunction with specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.
本发明内所描述的表达位置与方向的词，均是以器械操作者作为参照，靠近操作者的一端为近端，远离操作者的一端为远端。The words expressing position and direction described in the present invention refer to the operator of the instrument, the end close to the operator is the proximal end, and the end far away from the operator is the distal end.
如图1所示，本发明一实施方式的留置针100包括正压连接件10、导管组件20及连通正压连接件10及导管组件20的管道30。As shown in FIG. 1 , an indwelling needle 100 according to an embodiment of the present invention includes a positive pressure connector 10 , a catheter assembly 20 and a conduit 30 communicating with the positive pressure connector 10 and the catheter assembly 20 .
所述正压连接件10是一种无针密封的输液接头，药液通过正压连接件10注入，而后通过管道30流入导管组件20中。The positive pressure connector 10 is a needle-free sealed infusion joint, and the medical solution is injected through the positive pressure connector 10 , and then flows into the catheter assembly 20 through the pipeline 30 .
导管组件20包括引入针21、导管(未标示)、导管座22及罩体23。The catheter assembly 20 includes an introduction needle 21 , a catheter (not shown), a catheter hub 22 and a cover 23 .
导管座22为中空结构，其与管道30相互导通。The catheter base 22 is a hollow structure, which communicates with the pipeline 30 .
导管位于所述导管座22的远端，且导管与导管座22密封连接，当引入针21插入时，导管位于引入针21的外侧。The catheter is located at the distal end of the catheter adapter 22 , and the catheter is sealingly connected with the catheter adapter 22 , and when the introduction needle 21 is inserted, the catheter is located outside the introduction needle 21 .
引入针21插入/拔出所述导管及所述导管座22，如图1所示，引入针21处于插入状态，引入针21凸伸出导管座22的远端。The introduction needle 21 is inserted/extracted from the catheter and the catheter adapter 22. As shown in FIG.
所述引入针21的远端具有尖端211，且所述引入针21上具有回血槽212。The distal end of the introduction needle 21 has a tip 211 , and the introduction needle 21 has a blood return groove 212 thereon.
回血槽212实质为导通引入针21通道的槽体，且回血槽212沿引入针21拔出方向X延伸。The blood return groove 212 is substantially a groove body that conducts the channel of the introduction needle 21 , and the blood return groove 212 extends along the pulling-out direction X of the introduction needle 21 .
引入针21的近端还连接有辅助插拔部24，所述辅助插拔部24与所述导管座22的近端活动连接，且辅助插拔部24带动所述引入针21进行插入/拔出操作。The proximal end of the introduction needle 21 is also connected with an auxiliary insertion part 24, the auxiliary insertion part 24 is movably connected with the proximal end of the catheter adapter 22, and the auxiliary insertion part 24 drives the introduction needle 21 for insertion/extraction out operation.
罩体23用于保护引入针21及导管，当留置针100未使用时，罩体23套设在引入针21的导管的外侧，且罩体23与导管座22相互配合，当留置针100需使用时，拔下罩体23暴露出引入针21及导管即可。The cover body 23 is used to protect the introduction needle 21 and the catheter. When the indwelling needle 100 is not in use, the cover body 23 is sleeved on the outside of the catheter of the introduction needle 21, and the cover body 23 cooperates with the catheter adapter 22. When the indwelling needle 100 needs to During use, it is enough to pull out the cover body 23 to expose the introduction needle 21 and the catheter.
在本实施方式中，结合图2至图4，所述导管组件20还包括引入针保护装置25。In this embodiment, referring to FIGS. 2 to 4 , the catheter assembly 20 further includes an introduction needle protection device 25 .
所述引入针保护装置25包括护罩26及卡持件27。The introduction needle protection device 25 includes a shield 26 and a holding member 27 .
护罩26可拆卸地与所述导管座22的内表面配合，且所述护罩26内部形成一容纳腔261。The shield 26 is detachably engaged with the inner surface of the catheter adapter 22 , and an accommodating cavity 261 is formed inside the shield 26 .
卡持件27位于所述容纳腔261内。The holding member 27 is located in the accommodating cavity 261 .
当所述引入针21拔出完成时，结合图4，所述卡持件27限位于所述引入针21的回血槽212内而使得引入针21尖端211始终保持在所述护罩26内。When the introduction needle 21 is pulled out, referring to FIG. 4 , the holding member 27 is limited in the blood return groove 212 of the introduction needle 21 so that the tip 211 of the introduction needle 21 is always kept in the shield 26 .
这里，引入针21拔出完成是指引入针21相对护罩26朝向近端运动至极限位置，包括护罩26仍然位于导管座22内及护罩26、引入针21及卡持件27脱离导管座22的状态。Here, the extraction of the introduction needle 21 means that the introduction needle 21 moves to the limit position relative to the shield 26 towards the proximal end, including that the shield 26 is still located in the catheter adapter 22 and the shield 26, the introduction needle 21 and the clamping member 27 are out of the catheter. The state of seat 22.
本实施方式的回血槽212不仅起到回血作用，更重要的是，通过卡持件27与回血槽212的配合可以实现引入针21尖端211的限位。The blood return groove 212 in this embodiment not only plays the role of blood return, but more importantly, the position limitation of the tip 211 of the introduction needle 21 can be realized through the cooperation of the clamping member 27 and the blood return groove 212 .
本实施方式结构简单，且卡持件27与回血槽212稳定配合，可将引入针21尖端211稳定保持在护罩26内，避免被血污染的尖端211外露。This embodiment has a simple structure, and the holding member 27 is stably matched with the blood return groove 212, so that the tip 211 of the introduction needle 21 can be kept stably in the shield 26, and the tip 211 contaminated by blood is prevented from being exposed.
需要说明的是，参图3及图4，回血槽212与引入针21的外表面之间形成有台阶部213，当卡持件27位于回血槽212中时，由于台阶部213的限制作用，卡持件27的运动范围实质在回血槽212近端及远端的两个台阶部213之间。It should be noted that, referring to FIG. 3 and FIG. 4 , a step portion 213 is formed between the blood return groove 212 and the outer surface of the introduction needle 21. When the holding member 27 is located in the blood return groove 212, due to the restriction of the step portion 213, The movement range of the holding member 27 is substantially between the two steps 213 at the proximal end and the distal end of the blood return groove 212 .
如此，无论引入针21受到朝向近端还是朝向远端的作用力，卡持件27始终无法脱离回血槽212，且卡持件27始终在容纳腔261内，引入针21的尖端211的位置被限制，可有效避免引入针21的尖端211凸伸出护罩26的远端或是整个引入针21脱离护罩26。In this way, no matter whether the introduction needle 21 is subjected to a force toward the proximal end or toward the distal end, the holding member 27 cannot escape from the blood return groove 212 all the time, and the holding member 27 is always in the accommodating cavity 261, and the position of the tip 211 of the introduction needle 21 is controlled. Restriction can effectively prevent the tip 211 of the introduction needle 21 protruding from the distal end of the shield 26 or the entire introduction needle 21 from breaking away from the shield 26 .
另外，当沿引入针21拔出方向X的作用力足够大时，引入针21、卡持件27及护罩26一起脱离导管座22，而引入针21的尖端211始终保持在护罩26内。In addition, when the force along the pulling-out direction X of the introduction needle 21 is large enough, the introduction needle 21, the clamping member 27 and the shield 26 are separated from the catheter adapter 22 together, and the tip 211 of the introduction needle 21 is always kept in the shield 26 .
在本实施方式中，护罩26的外表面与导管座22的内表面为紧密配合关系，避免外界杂质通过护罩26进入导管座22内。In this embodiment, the outer surface of the shield 26 is closely matched with the inner surface of the catheter adapter 22 to prevent foreign impurities from entering the catheter adapter 22 through the shield 26 .
另外，护罩26的远端还可设置一与导管座22紧密配合的塞头(未标示)，所述引入针21穿过塞头而穿出导管座22，如此，当护罩26及引入针21一起拔出导管座22后，仍可通过塞头实现导管座22端口的密封。In addition, the distal end of the shield 26 can also be provided with a plug (not shown) that fits tightly with the catheter adapter 22, and the introduction needle 21 passes through the plug and passes out of the catheter adapter 22, so that when the shield 26 and the introduction After the needle 21 is pulled out of the catheter adapter 22 together, the port of the catheter adapter 22 can still be sealed by the plug.
在本实施方式中，护罩26还包括与容纳腔261导通的通槽262，所述通槽262的横截面大致为圆形，且通槽262的内径大致与引入针21的外径相等，以控制引入针21的插入/拔出方向。In this embodiment, the shield 26 further includes a through groove 262 communicating with the accommodating cavity 261, the cross section of the through groove 262 is substantially circular, and the inner diameter of the through groove 262 is substantially equal to the outer diameter of the introduction needle 21 , to control the insertion/extraction direction of the introduction needle 21.
在本实施方式中，所述卡持件27包括至少一卡爪271，所述卡爪271具有弹性，当所述回血槽212到达所述卡持件27处时，所述卡爪271的远端端部2711朝向所述回血槽212运动而限位于所述回血槽212内。In this embodiment, the holding member 27 includes at least one claw 271, and the claw 271 is elastic. When the blood return groove 212 reaches the holding member 27, the The end portion 2711 moves toward the blood return groove 212 and is confined in the blood return groove 212 .
这里，卡爪271沿引入针21拔出方向X的截面大致呈倒“L”型，即呈倒钩型。Here, the cross-section of the claw 271 along the pulling-out direction X of the introduction needle 21 is roughly in an inverted "L" shape, that is, in the shape of a barb.
当所述回血槽212未到达所述卡持件27处时，卡爪271实质是与引入针21的外表面接触，卡爪271具有朝向远离引入针21方向变形的趋势；当所述回血槽212到达所述卡持件27处时，由于失去了引入针21外表面的抵持作用，卡爪271具有朝向靠近引入针21方向回缩的趋势，此时，卡爪271的远端端部2711正好卡持在回血槽212内。When the blood return groove 212 does not reach the holding member 27, the claw 271 is substantially in contact with the outer surface of the introduction needle 21, and the claw 271 has a tendency to deform away from the introduction needle 21; when the blood return groove When 212 reaches the holding member 27, due to the loss of the resistance of the outer surface of the introduction needle 21, the claw 271 has a tendency to retract toward the direction of the introduction needle 21. At this time, the distal end of the claw 271 2711 is just clamped in the blood return tank 212 .
在本实施方式中，结合图5至图7，所述卡持件27还包括底座272，所述卡持件27包括间隔分布在所述底座272远端的若干卡爪271。In this embodiment, referring to FIG. 5 to FIG. 7 , the holding member 27 further includes a base 272 , and the holding member 27 includes a plurality of claws 271 distributed at intervals on the distal end of the base 272 .
这里，通过若干卡爪271的均匀分布，可以实现卡爪271与回血槽212的稳定配合，且可卡持住任何位置的回血槽212。Here, through the uniform distribution of the claws 271 , the stable cooperation between the claws 271 and the blood return tank 212 can be realized, and the blood return tank 212 at any position can be held.
另外，所述底座272的外轮廓呈圆形，若干卡爪271环绕所述底座272的周缘设置，且若干卡爪271的远端端部2711聚拢。In addition, the outer contour of the base 272 is circular, a plurality of claws 271 are disposed around the periphery of the base 272 , and distal ends 2711 of the plurality of claws 271 are gathered together.
也就是说，此时卡持件27整体呈灯笼状。That is to say, at this moment, the holding member 27 is in the shape of a lantern as a whole.
需要说明的是，若干卡爪271可与底座272活动连接，但不以此为限，若干卡爪271也可与底座272相互固定。It should be noted that the plurality of claws 271 can be movably connected with the base 272 , but not limited thereto, and the plurality of claws 271 can also be fixed with the base 272 .
在本实施方式中，所述护罩26的容纳腔261呈圆柱状，且所述容纳腔261的内径与所述底座272的外径相等。In this embodiment, the accommodating cavity 261 of the shield 26 is cylindrical, and the inner diameter of the accommodating cavity 261 is equal to the outer diameter of the base 272 .
这里，卡持件27的底座272实质与容纳腔261的内表面相互抵接，如此，可避免卡持件27沿容纳腔261的径向晃动。Here, the base 272 of the holding member 27 substantially abuts against the inner surface of the receiving chamber 261 , so that the holding member 27 can be prevented from shaking in the radial direction of the receiving chamber 261 .
另外，于所述引入针21的插入/拔出方向X上，所述容纳腔261具有第一长度D1，所述卡持件27具有第二长度D2，所述第一长度D1大于所述第二长度D2。In addition, in the insertion/extraction direction X of the introduction needle 21, the accommodating cavity 261 has a first length D1, the holding member 27 has a second length D2, and the first length D1 is greater than the first length D1. Two length D2.
也就是说，当卡持件27抵接容纳腔261的近端时，卡持件27的远端与容纳腔261的远端之间设置具有一空隙S，该空隙S可用于容纳回流的血液。That is to say, when the holding member 27 abuts against the proximal end of the receiving chamber 261, there is a space S between the distal end of the holding member 27 and the distal end of the receiving chamber 261, and the space S can be used to accommodate the returning blood. .
卡持件27与容纳腔261可为相对固定的关系，但不以此为限，卡持件27也可于容纳腔261内沿引入针21拔出方向X前后移动。The holding member 27 and the accommodating cavity 261 may be in a relatively fixed relationship, but not limited thereto, and the holding member 27 may also move back and forth along the pulling-out direction X of the introducing needle 21 in the accommodating cavity 261 .
在本实施方式中，所述底座272具有一贯穿孔2721，若干卡爪271的远端端部2711围设成一开口2712，所述引入针21依次穿过所述贯穿孔2721及所述开口2712而与所述卡持件27相互配合。In this embodiment, the base 272 has a through hole 2721, and the distal ends 2711 of several claws 271 are surrounded by an opening 2712, and the introduction needle 21 passes through the through hole 2721 and the opening 2712 in turn. And cooperate with the clamping piece 27 .
所述贯穿孔2721的中心与所述开口2712的中心的连线方向与所述引入针21的插入/拔出方向X一致。The direction of the line connecting the center of the through hole 2721 and the center of the opening 2712 is consistent with the insertion/extraction direction X of the introduction needle 21 .
也就是说，贯穿孔2721、开口2712及护罩26的通槽262的中心线为同一直线，引入针21可以笔直穿过贯穿孔2721、开口2712及通槽262，从而避免引入针21受力弯曲。That is to say, the centerlines of the through hole 2721, the opening 2712 and the through groove 262 of the shield 26 are the same straight line, and the introduction needle 21 can pass straight through the through hole 2721, the opening 2712 and the through groove 262, thereby avoiding the force on the introduction needle 21. bending.
这里，当所述回血槽212位于所述卡持件27的远端时，若干卡爪271抵接在引入针21的外表面，所述开口2712具有第一开口口径d1，当所述回血槽212与所述卡持件27相互配合时，若干卡爪271的至少部分卡持在回血槽212内，所述开口2712具有第二开口口径d2，所述第一开口口d1径大于所述第二开口口径d2。Here, when the blood return groove 212 is located at the distal end of the holding member 27, several claws 271 abut against the outer surface of the introduction needle 21, the opening 2712 has a first opening diameter d1, when the blood return groove 212 cooperates with the holding member 27, at least part of the claws 271 are held in the blood return groove 212, the opening 2712 has a second opening diameter d2, and the first opening diameter d1 is larger than the first opening diameter d1 Two opening diameter d2.
这里，由于卡爪271具有弹性，当卡爪271进入回血槽212后，至少部分卡爪271会朝向开口2712中心回缩而实现进一步聚拢，开口口径变小。Here, due to the elasticity of the claws 271, when the claws 271 enter the blood return groove 212, at least part of the claws 271 will retract toward the center of the opening 2712 to achieve further gathering, and the diameter of the opening becomes smaller.
另外，所述第一开口口径d1与所述贯穿孔2721的开口口径相等，此时，贯穿孔2721与引入针21的外表面相互匹配。In addition, the first opening diameter d1 is equal to the opening diameter of the through hole 2721 , and at this time, the through hole 2721 matches the outer surface of the introduction needle 21 .
需要说明的是，开口2712的形状与引入针21的外表面相互匹配，开口2712大致呈圆形，第一开口口径d1及第二开口口径d2实质是指开口2712的平均口径，或是开口2712的最小口径。但不以此为限，开口2712也可呈其他形状。It should be noted that the shape of the opening 2712 matches the outer surface of the introduction needle 21, the opening 2712 is roughly circular, and the first opening diameter d1 and the second opening diameter d2 essentially refer to the average diameter of the opening 2712, or the opening 2712 minimum caliber. But not limited thereto, the opening 2712 can also be in other shapes.
应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施方式中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。It should be understood that although this description is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the description is only for clarity, and those skilled in the art should take the description as a whole, and each The technical solutions in the embodiments can also be properly combined to form other embodiments that can be understood by those skilled in the art.
上文所列出的一系列的详细说明仅仅是针对本发明的可行性实施方式的具体说明，它们并非用以限制本发明的保护范围，凡未脱离本发明技艺精神所作的等效实施方式或变更均应包含在本发明的保护范围之内。The series of detailed descriptions listed above are only specific descriptions for feasible implementations of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent implementation or implementation that does not depart from the technical spirit of the present invention All changes should be included within the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610767797.7ACN106362263A (en) | 2016-08-30 | 2016-08-30 | Introducing needle protective device used for catheter assembly, catheter assembly and indwelling needle |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610767797.7ACN106362263A (en) | 2016-08-30 | 2016-08-30 | Introducing needle protective device used for catheter assembly, catheter assembly and indwelling needle |
| Publication Number | Publication Date |
|---|---|
| CN106362263Atrue CN106362263A (en) | 2017-02-01 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610767797.7APendingCN106362263A (en) | 2016-08-30 | 2016-08-30 | Introducing needle protective device used for catheter assembly, catheter assembly and indwelling needle |
| Country | Link |
|---|---|
| CN (1) | CN106362263A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103007384A (en)* | 2006-11-03 | 2013-04-03 | B.布劳恩梅尔松根股份公司 | Catheter assembly and components thereof |
| CN203075435U (en)* | 2012-12-03 | 2013-07-24 | 康而富控股股份有限公司 | Needle head protecting device for intravenous injection indwelling needle |
| CN103285450A (en)* | 2013-03-25 | 2013-09-11 | 南通恒泰医疗器材有限公司 | Multifunctional indwelling needle |
| CN204121526U (en)* | 2014-09-05 | 2015-01-28 | 广东百合医疗科技股份有限公司 | Safe type venous retaining needle |
| WO2015161294A1 (en)* | 2014-04-18 | 2015-10-22 | Becton, Dickinson And Company | Multi-use blood control safety catheter assembly |
| CN205041892U (en)* | 2015-06-25 | 2016-02-24 | 千禧光医疗有限公司 | Safety mechanism for indwelling needles and indwelling needles with the safety mechanism |
| CN205073413U (en)* | 2015-09-08 | 2016-03-09 | 北京大学深圳医院 | Safe venous indwelling needle |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103007384A (en)* | 2006-11-03 | 2013-04-03 | B.布劳恩梅尔松根股份公司 | Catheter assembly and components thereof |
| CN203075435U (en)* | 2012-12-03 | 2013-07-24 | 康而富控股股份有限公司 | Needle head protecting device for intravenous injection indwelling needle |
| CN103285450A (en)* | 2013-03-25 | 2013-09-11 | 南通恒泰医疗器材有限公司 | Multifunctional indwelling needle |
| WO2015161294A1 (en)* | 2014-04-18 | 2015-10-22 | Becton, Dickinson And Company | Multi-use blood control safety catheter assembly |
| CN204121526U (en)* | 2014-09-05 | 2015-01-28 | 广东百合医疗科技股份有限公司 | Safe type venous retaining needle |
| CN205041892U (en)* | 2015-06-25 | 2016-02-24 | 千禧光医疗有限公司 | Safety mechanism for indwelling needles and indwelling needles with the safety mechanism |
| CN205073413U (en)* | 2015-09-08 | 2016-03-09 | 北京大学深圳医院 | Safe venous indwelling needle |
| Publication | Publication Date | Title |
|---|---|---|
| US12076509B2 (en) | Integrated catheter with independent fluid paths | |
| JP7231609B2 (en) | An extension that accommodates a probe or intravenous catheter | |
| EP0314470B1 (en) | Needle protector | |
| US9308352B2 (en) | Retention member and application thereof | |
| EP3368126B1 (en) | Compliant catheter adapter and compression cap | |
| EP3436127B1 (en) | Cannula capture mechanism | |
| US20030176842A1 (en) | Forward shielding safety device | |
| US20110166528A1 (en) | Safety catheter | |
| CN111479505A (en) | Intravenous catheters and blood collection devices | |
| MX2014004800A (en) | Catheter with removable cannula for puncturing a body cavity and cannula for the use with a catheter which can be moved in the cannula. | |
| JP2020509842A (en) | Intravenous catheter assembly with cannula safety mechanism | |
| CA2931752C (en) | Blood collection device with double pivot shields | |
| US4304231A (en) | Catheter with wire stylet | |
| AU2014359265B2 (en) | Safety needle assemblies and related methods | |
| CN106362263A (en) | Introducing needle protective device used for catheter assembly, catheter assembly and indwelling needle | |
| WO2000056388A2 (en) | Intravenous catheter insertion assembly | |
| CN117482358A (en) | Transexternal Zhou Mini midline catheter insertion device | |
| HK1170967A1 (en) | Catheter needle tip shielding device | |
| HK1170967B (en) | Catheter needle tip shielding device | |
| HK1233978A1 (en) | Needle assembly with sealed notch and related methods |
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | Application publication date:20170201 | |
| RJ01 | Rejection of invention patent application after publication |