CN204864352U - Prevent embolism vein and keep somewhere needle - Google Patents

本实用新型公开了一种防栓塞静脉留置针，包括针座、穿刺针及弹性囊，针座的前端设有导管，针座的后端设置与导管连通的针管接口、输液接口及正压接口，针管接口内设有隔离塞，输液接口及正压接口分别位于针管接口的两侧；穿刺针包括针头座及其一端固定安装于针头座上的针管，针头座可拆卸式连接于针管接口，针管穿过所述隔离塞由导管伸出；弹性囊具有一与正压接口可拆卸式连接的连接端，连接端内设有一第一单向阀，第一单向阀沿弹性囊通向所述正压接口的方向导通。本实用新型可以通过挤压弹性囊，向留置针内提供正压的压力，迫使其内部压力增大，最终使得导管内的血液不会倒流，实现防止留置针栓塞等问题。其结构简单，操作方便，防栓塞效果更好。

The utility model discloses an anti-embolism venous indwelling needle, which comprises a needle base, a puncture needle and an elastic bag. The front end of the needle base is provided with a catheter, and the rear end of the needle base is provided with a needle tube interface, an infusion interface and a positive pressure interface connected with the catheter. , there is an isolation plug in the needle tube interface, the infusion interface and the positive pressure interface are located on both sides of the needle tube interface; The needle tube passes through the isolation plug and protrudes from the catheter; the elastic bag has a connection end detachably connected to the positive pressure interface, and a first one-way valve is arranged in the connection end, and the first one-way valve leads along the elastic bag to all Conduction in the direction of the above-mentioned positive pressure interface. The utility model can provide positive pressure to the indwelling needle by extruding the elastic bag to force the internal pressure to increase, so that the blood in the catheter will not flow back and prevent the indwelling needle from embolism. The utility model has the advantages of simple structure, convenient operation and better anti-embolism effect.

防栓塞静脉留置针Anti-thrombotic intravenous indwelling needle

技术领域technical field

本实用新型涉及留置针，尤其涉及一种防栓塞静脉留置针。The utility model relates to an indwelling needle, in particular to an anti-embolism vein indwelling needle.

背景技术Background technique

静脉留置针(veindetainedneedle)的应用是临床输液较好的方法，一方面可以减轻婴幼儿因头皮针反复穿刺带来的痛苦和可以适用于长期输液的成人。另一方面也减轻临床护士的工作量。The application of intravenous indwelling needle (veindetainedneedle) is a better method for clinical infusion. On the one hand, it can reduce the pain caused by repeated puncture of scalp needles in infants and young children and can be suitable for adults with long-term infusion. On the other hand, it also reduces the workload of clinical nurses.

然而，静脉留置针在使用过程中，每次输液完毕后的输液接头拔除动作，必然使留置针内形成一定的负压，会造成血液回流进入留置针管内，发生血液凝固，形成栓子；或者是血流较慢慢或淤滞，局部凝血酶聚集，纤维蛋白活性降低，也会导致局部形成栓子。再次使用时，因留置针通道堵塞，需要重新穿刺，会影响治疗和增加医护人员劳动；再者若栓子进入血管，随血流进入人体不同的组织或器官，造成该组织或器官血管的栓塞，严重的可引起该器官的缺血、坏死，后果非常严重和危险。However, during the use of the intravenous indwelling needle, the action of pulling out the infusion connector after each infusion will inevitably form a certain negative pressure in the indwelling needle, which will cause blood to flow back into the indwelling needle tube, coagulate blood, and form an embolus; or The blood flow is slow or stagnant, the local thrombin aggregates, and the fibrin activity decreases, which can also lead to the formation of local emboli. When used again, because the indwelling needle channel is blocked, it needs to be punctured again, which will affect the treatment and increase the labor of medical staff; moreover, if the embolus enters the blood vessel, it will enter different tissues or organs of the human body with the blood flow, causing embolism of the blood vessels of the tissue or organ , severe ischemia and necrosis of the organ can be caused, and the consequences are very serious and dangerous.

实用新型内容Utility model content

本实用新型的目的在于克服现有技术中的不足而提供一种防栓塞静脉留置针。The purpose of the utility model is to overcome the deficiencies in the prior art and provide an anti-embolism intravenous indwelling needle.

本实用新型解决现有技术问题所采用的技术方案是：一种防栓塞静脉留置针，包括：The technical scheme adopted by the utility model to solve the problems of the prior art is: an anti-embolism intravenous indwelling needle, comprising:

针座，所述针座的前端设有导管，所述针座的后端设置与所述导管连通的针管接口、输液接口及正压接口，所述针管接口内设有隔离塞，所述输液接口及正压接口分别位于所述针管接口的两侧；Needle holder, the front end of the needle holder is provided with a catheter, the rear end of the needle holder is provided with a needle interface, an infusion interface and a positive pressure interface connected with the catheter, the needle interface is provided with an isolation plug, and the infusion The interface and the positive pressure interface are respectively located on both sides of the needle interface;

穿刺针，所述穿刺针包括针头座及其一端固定安装于所述针头座上的针管，所述针头座可拆卸式连接于所述针管接口，所述针管穿过所述隔离塞由所述导管伸出；A puncture needle, the puncture needle includes a needle base and a needle tube with one end fixedly mounted on the needle base, the needle base is detachably connected to the needle tube interface, the needle tube passes through the isolation plug and is released by the catheter sticking out;

弹性囊，所述弹性囊具有一与所述正压接口可拆卸式连接的连接端，所述连接端内设有一第一单向阀，所述第一单向阀沿所述弹性囊通向所述正压接口的方向导通。An elastic bag, the elastic bag has a connection end detachably connected to the positive pressure interface, a first one-way valve is arranged in the connection end, and the first one-way valve leads along the elastic bag to The direction of the positive pressure interface is turned on.

优选地，所述弹性囊还具有与所述连接端相对的开口端，所述开口端可拆卸连接一密封盖，所述密封盖上设置有一第二单向阀，所述第二单向阀沿外部大气通向所述弹性囊的方向导通。Preferably, the elastic bag also has an open end opposite to the connecting end, the open end is detachably connected to a sealing cover, and the sealing cover is provided with a second one-way valve, and the second one-way valve Leading along the direction of the external atmosphere leading to the elastic bladder.

优选地，所述密封盖与所述开口端之间螺纹连接，且所述密封盖内设有密封圈，所述密封圈与所述开口端的端面相抵。Preferably, the sealing cover is threadedly connected to the opening end, and a sealing ring is provided in the sealing cover, and the sealing ring is in contact with the end surface of the opening end.

优选地，所述针头座的后端面具有一与所述针管相连通的凹腔，所述凹腔内设有过滤填充物。Preferably, the rear end surface of the needle hub has a cavity communicating with the needle tube, and the filter filling is arranged in the cavity.

优选地，所述针管的前端的圆周壁上设有一回血观察孔。Preferably, a blood return observation hole is provided on the peripheral wall of the front end of the needle tube.

优选地，所述针管接口螺纹连接一堵头，所述堵头的后端面设有一插槽，所述插槽的底部设有一过针孔；Preferably, the needle tube interface is threadedly connected to a plug, the rear end of the plug is provided with a slot, and the bottom of the slot is provided with a needle hole;

所述针头座的前端面具有一与所述插槽插接配合的中空圆台部，所述针管的一端同轴地套设于所述中空圆台部内，所述针管的另一端依次穿过所述过针孔、隔离塞由所述导管伸出。The front end surface of the needle holder has a hollow circular pedestal part which is plugged and fitted with the slot, one end of the needle tube is coaxially sleeved in the hollow circular pedestal part, and the other end of the needle tube passes through the circular pedestal part in turn. Through the needle hole, an isolation plug protrudes from the catheter.

优选地，所述过滤填充物为聚丙烯材质。Preferably, the filter filler is made of polypropylene.

优选地，所述弹性囊为透明弹性材质。Preferably, the elastic capsule is made of transparent elastic material.

本实用新型的有益效果是：根据本实用新型提供的防栓塞静脉留置针，在每次输液完成后，可以通过挤压弹性囊，向留置针内提供正压的压力，迫使其内部压力增大，最终使得导管内的血液不会倒流，从而防止血栓的形成，实现防止留置针栓塞等问题。其结构简单，操作方便，防栓塞效果更好。The beneficial effects of the utility model are: according to the anti-thrombotic intravenous indwelling needle provided by the utility model, after each infusion is completed, positive pressure can be provided to the indwelling needle by squeezing the elastic bag, forcing its internal pressure to increase , Finally, the blood in the catheter will not flow back, thereby preventing the formation of thrombus, and realizing the prevention of indwelling needle embolism and other problems. The utility model has the advantages of simple structure, convenient operation and better anti-embolism effect.

附图说明Description of drawings

图1是本实用新型实施例防栓塞静脉留置针的整体结构示意图；1 is a schematic diagram of the overall structure of an anti-embolism intravenous indwelling needle according to an embodiment of the present invention;

图2是本实用新型实施例防栓塞静脉留置针中穿刺针分离状态的结构示意图。Fig. 2 is a schematic structural view of the separation state of the puncture needle in the anti-embolism intravenous indwelling needle according to the embodiment of the present invention.

附图标记：Reference signs:

针座10；Seat 10;

导管11；conduit 11;

针管接口12；Needle interface 12;

输液接口13；Infusion interface 13;

正压接口14；Positive pressure interface 14;

堵头15；Plug 15;

插槽151；slot 151;

过针孔152；Through the pinhole 152;

隔离塞16；isolation plug 16;

穿刺针20；puncture needle 20;

针头座21；Needle seat 21;

中空圆台部211；Hollow circular truncated part 211;

针管22；Needle 22;

回血观察孔221；Blood return observation hole 221;

过滤填充物23；filter filling 23;

弹性囊30；Elastic bladder 30;

连接端301；connection terminal 301;

开口端302；open end 302;

第一单向阀31；The first one-way valve 31;

密封盖32；sealing cover 32;

第二单向阀33。The second one-way valve 33.

本实用新型目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

具体实施方式Detailed ways

下面详细描述本实用新型的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本实用新型，而不能理解为对本实用新型的限制。Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

在本实用新型的描述中，需要理解的是，术语″中心″、″纵向″、″横向″、″长度″、″宽度″、″厚度″、″上″、″下″、″前″、″后″、″左″、″右″、″竖直″、″水平″、″顶″、″底″″内″、″外″、″顺时针″、″逆时针″等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本实用新型和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本实用新型的限制。In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", Orientation indicated by "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation , so it cannot be interpreted as a limitation of the present utility model.

此外，术语″第一″、″第二″仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有″第一″、″第二″的特征可以明示或者隐含地包括一个或者更多个该特征。在本实用新型的描述中，″多个″的含义是两个或两个以上，除非另有明确具体的限定。In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

在本实用新型中，除非另有明确的规定和限定，术语″安装″、″相连″、″连接″、″固定″等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本实用新型中的具体含义。In the present utility model, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

参照图1至图2所示，本实用新型实施例提供了一种防栓塞静脉留置针，包括针座10、穿刺针20及弹性囊30。Referring to FIGS. 1 to 2 , the embodiment of the present invention provides an anti-embolism intravenous indwelling needle, including a needle base 10 , a puncture needle 20 and an elastic bag 30 .

具体而言，针座10的前端设有导管11，针座10的后端设置与所述导管11连通的针管接口12、输液接口13及正压接口14，所述针管接口12内设有隔离塞16，所述输液接口13及正压接口14分别位于所述针管接口12的两侧。Specifically, the front end of the needle hub 10 is provided with a conduit 11, and the rear end of the needle hub 10 is provided with a needle interface 12, an infusion interface 13, and a positive pressure interface 14 communicating with the conduit 11. The plug 16, the infusion port 13 and the positive pressure port 14 are respectively located on both sides of the needle port 12.

穿刺针20包括针头座21及其一端固定安装于所述针头座21上的针管22，所述针头座21可拆卸式连接于所述针管接口12，所述针管22穿过所述隔离塞16由所述导管11伸出。The puncture needle 20 includes a needle base 21 and a needle tube 22 fixedly mounted on the needle base 21 at one end thereof, the needle base 21 is detachably connected to the needle interface 12, and the needle tube 22 passes through the isolation plug 16 protrudes from the conduit 11.

弹性囊30具有一与所述正压接口14可拆卸式连接的连接端301，所述连接端301内设有一第一单向阀31，所述第一单向阀31沿所述弹性囊30通向所述正压接口14的方向导通。The elastic bag 30 has a connecting end 301 detachably connected to the positive pressure interface 14, and a first one-way valve 31 is arranged in the connecting end 301, and the first one-way valve 31 is arranged along the elastic bag 30. The direction leading to the positive pressure interface 14 is conducted.

也就是说，弹性囊30可以挤压，当挤压弹性囊30时，弹性囊30内部气体和/或液体自第一单向阀31进入至针座10内，使得针座10内部的压力增大，也就是通过挤压弹性囊30可以为针座10提供正压力。如此，在每次输出完成后，可以通过挤压弹性囊30，为针座10内提供正压力，使其内部压力增大，实现正压封管，至此，人体血管内的血液不会倒流至导管11，可以防止导管11或针座10内形成血栓，造成栓塞等问题。That is to say, the elastic capsule 30 can be squeezed. When the elastic capsule 30 is squeezed, the gas and/or liquid inside the elastic capsule 30 enters the needle hub 10 from the first one-way valve 31, so that the pressure inside the needle hub 10 increases. In other words, positive pressure can be provided for the needle hub 10 by squeezing the elastic capsule 30 . In this way, after each output is completed, the elastic capsule 30 can be squeezed to provide a positive pressure in the needle hub 10 to increase the internal pressure and achieve positive pressure sealing. So far, the blood in the human blood vessel will not flow back to the The catheter 11 can prevent thrombus from forming in the catheter 11 or the needle hub 10, causing problems such as embolism.

在本实用新型的一个实施例中，弹性囊30还具有与所述连接端301相对的开口端302，所述开口端302可拆卸连接一密封盖32，所述密封盖32上设置有一第二单向阀33，所述第二单向阀33沿外部大气通向所述弹性囊30的方向导通。In one embodiment of the present utility model, the elastic bag 30 also has an open end 302 opposite to the connecting end 301, and the open end 302 is detachably connected to a sealing cover 32, and the sealing cover 32 is provided with a second A one-way valve 33 , the second one-way valve 33 leads along the direction that the external atmosphere leads to the elastic bag 30 .

也就是说，弹性囊30上设有开口端302，而且该开口端302通过密封盖32密封，如此，可以打开该密封盖32，通过开口端302向弹性囊30内部加入封管液，例如该封管液可以是生理盐水等。如此，在挤压弹性囊30时，弹性囊30内的封管液可以进入至针座10内部，可以起到更好的封管效果。此外，通过在密封盖32上设置第二单向阀33，弹性囊30挤压恢复原状时，外部气体可以通过第二单向阀33进入至弹性囊30内部，确保弹性囊30快速恢复至原状，以实现可反复挤压。That is to say, the elastic bag 30 is provided with an open end 302, and the open end 302 is sealed by the sealing cover 32, so that the sealing cover 32 can be opened, and the sealing solution is added to the inside of the elastic bag 30 through the opening end 302, such as the The lock fluid may be physiological saline or the like. In this way, when the elastic capsule 30 is squeezed, the tube locking fluid in the elastic capsule 30 can enter into the interior of the needle hub 10 , which can achieve a better tube sealing effect. In addition, by setting the second one-way valve 33 on the sealing cover 32, when the elastic bag 30 is squeezed back to its original shape, external air can enter the inside of the elastic bag 30 through the second one-way valve 33, ensuring that the elastic bag 30 quickly returns to its original state , to achieve repeated extrusion.

更为有利的，在本实用新型的一个实施例中，密封盖32与所述开口端302之间螺纹连接，且所述密封盖32内设有密封圈，所述密封圈与所述开口端302的端面相抵。如此，密封盖32与开口端302之间的拆卸及安装更加方便简单，通过密封圈可以加强密封盖32与开口端302之间的密封效果。More advantageously, in one embodiment of the present utility model, the sealing cover 32 is threadedly connected with the opening end 302, and a sealing ring is arranged inside the sealing cover 32, and the sealing ring is connected to the opening end 302. The end faces of 302 are offset. In this way, the disassembly and installation between the sealing cover 32 and the opening end 302 are more convenient and simple, and the sealing effect between the sealing cover 32 and the opening end 302 can be enhanced by the sealing ring.

在本实用新型的一个实施例中，针头座21的后端面具有一与所述针管22相连通的凹腔，所述凹腔内设有过滤填充物23。也就是说，针管22是与外部的大气相连通的，如此，在穿刺时，血管内部的血液可以回流，针管22内部的空气可以被赶出至外部大气，可以实现快速回血，以便于医务人员快速判断穿刺是否完成。In one embodiment of the present utility model, the rear end surface of the needle holder 21 has a cavity communicating with the needle tube 22 , and the filter filler 23 is arranged in the cavity. That is to say, the needle tube 22 is connected with the external atmosphere, so that when puncturing, the blood inside the blood vessel can flow back, and the air inside the needle tube 22 can be driven out to the external atmosphere, so that blood can be returned quickly, so that medical personnel Quickly judge whether the puncture is complete.

更为有利的，在本实用新型的一个优选实施例中，针管22的前端的圆周壁上设有一回血观察孔221。如此，在穿刺时，如果血管内的血回流至针管22内，医务人员能够通过回血观察孔221观察到，以利于医务人员更快地确认是否回血，进而判断是都正确插入血管。More advantageously, in a preferred embodiment of the present invention, a blood return observation hole 221 is provided on the peripheral wall of the front end of the needle tube 22 . In this way, during puncture, if the blood in the blood vessel flows back into the needle tube 22, the medical staff can observe it through the blood return observation hole 221, so that the medical staff can quickly confirm whether the blood returns, and then judge whether the blood vessel is inserted correctly.

在本实用新型的一个实施例中，针管接口12螺纹连接一堵头15，所述堵头15的后端面设有一插槽151，所述插槽151的底部设有一过针孔152。In one embodiment of the present invention, the needle tube interface 12 is screwed to a plug 15 , a slot 151 is provided on the rear end of the plug 15 , and a needle hole 152 is provided at the bottom of the slot 151 .

对应的，针头座21的前端面具有一与所述插槽151插接配合的中空圆台部211，所述针管22的一端同轴地套设于所述中空圆台部211内，所述针管22的另一端依次穿过所述过针孔152、隔离塞16由所述导管11伸出。Correspondingly, the front end surface of the needle base 21 has a hollow circular platform portion 211 that is plugged and fitted with the slot 151, and one end of the needle tube 22 is coaxially sleeved in the hollow circular platform portion 211, and the needle tube 22 The other end of the tube passes through the needle hole 152 in turn, and the isolation plug 16 protrudes from the conduit 11 .

也就是说，针头座21是连接在堵头15上的，堵头15是可拆卸式连接在针管接口12上的。如此，一方面，堵头15对针管接口12内的隔离塞16起到固定作用，另一方面，在方便于针头座21拔出，也即是方便退针。That is to say, the needle hub 21 is connected to the plug 15 , and the plug 15 is detachably connected to the needle hub 12 . In this way, on the one hand, the plug 15 plays a role in fixing the isolation plug 16 in the needle tube interface 12, and on the other hand, it facilitates the extraction of the needle holder 21, that is, it facilitates the withdrawal of the needle.

可选地，过滤填充物23可以采用聚丙烯材质。弹性囊30可以采用透明弹性材质，以便于观察内部封管液的佘量。Optionally, the filter filler 23 can be made of polypropylene. The elastic capsule 30 can be made of transparent elastic material, so as to observe the amount of sealing fluid inside.

综上所述，根据本实用新型提供的防栓塞静脉留置针，在每次输液完成后，可以通过挤压弹性囊30，向留置针内提供正压的压力，迫使的内部压力增大，最终使得导管11内的血液不会倒流，从而防止血栓的形成，实现防止留置针栓塞等问题。其结构简单，操作方便，防栓塞效果更好。To sum up, according to the anti-thrombotic intravenous indwelling needle provided by the utility model, after each infusion is completed, the elastic capsule 30 can be squeezed to provide positive pressure to the indwelling needle, so that the forced internal pressure increases, and finally This prevents the blood in the catheter 11 from flowing backwards, thereby preventing the formation of thrombus, and realizing problems such as preventing indwelling needle embolism. The utility model has the advantages of simple structure, convenient operation and better anti-embolism effect.

在本说明书的描述中，参考术语″一个实施例″、″一些实施例″、″示例″、″具体示例″、或″一些示例″等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本实用新型的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。In the description of this specification, description with reference to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" etc. means that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

尽管上面已经示出和描述了本实用新型的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本实用新型的限制，本领域的普通技术人员在不脱离本实用新型的原理和宗旨的情况下在本实用新型的范围内可以对上述实施例进行变化、修改、替换和变型。Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be construed as limitations of the present invention. The above-mentioned embodiments can be changed, modified, replaced and modified within the scope of the present utility model under the principle and purpose.