CN209137603U - A kind of anti-venous indwelling needle - Google Patents
A kind of anti-venous indwelling needle Download PDFInfo
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- CN209137603U CN209137603U CN201821841417.0U CN201821841417U CN209137603U CN 209137603 U CN209137603 U CN 209137603U CN 201821841417 U CN201821841417 U CN 201821841417U CN 209137603 U CN209137603 U CN 209137603U
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- 239000008280 blood Substances 0.000 abstract description 17
- 210000004369 blood Anatomy 0.000 abstract description 17
- 238000001990 intravenous administration Methods 0.000 abstract description 9
- 206010073310 Occupational exposures Diseases 0.000 abstract description 6
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- 239000000243 solution Substances 0.000 description 18
- 230000009286 beneficial effect Effects 0.000 description 8
- 208000012266 Needlestick injury Diseases 0.000 description 6
- 238000002955 isolation Methods 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 4
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- 108090000623 proteins and genes Proteins 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 206010073753 Fear of injection Diseases 0.000 description 1
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- 230000004888 barrier function Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
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- 230000002265 prevention Effects 0.000 description 1
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Abstract
本实用新型涉及医疗用品技术领域，提供了一种防针刺静脉留置针，旨在解决现有防针刺静脉留置针在引导针芯抽出瞬间血液飞溅的问题。所述防针刺静脉留置针包括静脉留置针本体和柔性针套，所述柔性针套内部具有容纳腔，所述柔性针套套设于所述静脉留置针本体的引导针芯上，所述柔性针套被配置为当所述引导针芯向外抽出时，所述柔性针套沿所述引导针芯滑移至所述引导针芯的针尖处，使所述引导针芯的针尖容纳于所述柔性针套的容纳腔内。由于当引导针芯从柔性套管中拔出后，柔性针套可以滑移到针尖处并笼罩针尖，一方面，可以防止针刺型职业暴露；另一方面，由于针尖被封闭在密闭的容纳腔内，因此可以有效收容针尖的血液，防止血液飞溅、造成污染。
The utility model relates to the technical field of medical supplies, and provides an anti-acupuncture venous indwelling needle, which aims to solve the problem of blood splashing at the moment when the guide needle core is drawn out of the existing anti-needle puncture venous indwelling needle. The anti-needle puncture venous indwelling needle includes a venous indwelling needle body and a flexible needle sheath, the flexible needle sheath has a accommodating cavity inside, the flexible needle sheath is sheathed on the guiding needle core of the intravenous indwelling needle body, and the flexible needle sheath is The needle cover is configured such that when the guide needle core is drawn out, the flexible needle cover slides along the guide needle core to the needle tip of the guide needle core, so that the needle tip of the guide needle core is accommodated in the guide needle core. into the accommodating cavity of the flexible needle cover. Since the flexible needle sleeve can slide to the needle tip and cover the needle tip when the guide needle core is pulled out from the flexible sleeve, on the one hand, occupational exposure of acupuncture type can be prevented; Therefore, it can effectively contain the blood of the needle tip, and prevent the blood from splashing and causing pollution.
Description
技术领域technical field
本实用新型涉及医疗用品技术领域，具体而言，涉及一种防针刺静脉留置针。The utility model relates to the technical field of medical supplies, in particular to an anti-needle puncture venous indwelling needle.
背景技术Background technique
静脉留置针又称静脉套管针，其使用能减少患儿因反复静脉穿刺而造成的痛苦以及对打针的恐惧感，减轻家长的焦躁情绪，便于临床用药，减轻临床护士的工作量。静脉留置针操作简便，适用于任何部位的穿刺，在临床上得以普遍应用。静脉留置针的核心组成部件包括具有第一接口、第二接口和分叉接口的三通导管座、固定连接于所述第一接口的柔性套管、可拆卸连接于所述第二接口的针座、固定连接于所述分叉接口的延长管和设置于所述三通导管座之内的隔离塞；其中，针座上固定插接有引导针芯，引导针芯穿过隔离塞并插入柔性套管中。使用时，将柔性套管和引导针芯一起穿刺入血管内，当柔性套管全部进入血管后，回撤引导针芯，将柔性套管留置在血管内从而进行输液治疗。Indwelling venous needles, also known as venous trocars, can reduce the pain and fear of injections caused by repeated venipuncture in children, reduce the anxiety of parents, facilitate clinical medication, and reduce the workload of clinical nurses. The venous indwelling needle is easy to operate, suitable for puncture of any part, and widely used in clinical practice. The core components of the venous indwelling needle include a three-way catheter hub with a first interface, a second interface and a bifurcated interface, a flexible sleeve that is fixedly connected to the first interface, and a needle that is detachably connected to the second interface. a base, an extension tube fixedly connected to the bifurcated interface, and an isolation plug arranged in the three-way catheter base; wherein, a guide needle core is fixedly inserted on the needle base, and the guide needle core passes through the isolation plug and is inserted into in flexible casing. In use, the flexible cannula and the guide needle core are punctured into the blood vessel together, and when the flexible cannula all enter the blood vessel, the guide needle core is withdrawn, and the flexible cannula is left in the blood vessel for infusion therapy.
普通的静脉留置针，不管是开放式还是密闭式的，其用于穿刺的引导针芯从柔性套管中拔出后，引导针芯的针尖是暴露在外的，执行操作的医护人员有可能被针尖刺伤，造成针刺型职业暴露。Ordinary intravenous indwelling needles, no matter whether they are open or closed, after the guide needle core used for puncture is pulled out from the flexible cannula, the needle tip of the guide needle core is exposed, and the medical staff performing the operation may be Needle stick injuries, resulting in acupuncture-type occupational exposure.
为了防止医护人员的针刺型职业暴露，现有一种防针刺静脉留置针，此种静脉留置针的三通导管座内设置有不锈钢针套，当用于穿刺的引导针芯从柔性套管中拔出后，不锈钢针套能覆盖针头。但是不锈钢针套的下端为开口状，不锈钢针套不能容纳血液。因此虽然这种静脉留置针能防止针刺危险，但是不能有效防止引导针芯抽出瞬间时血液飞溅，污染环境。In order to prevent acupuncture occupational exposure of medical staff, there is an anti-needle venous indwelling needle. The three-way catheter base of this venous indwelling needle is provided with a stainless steel needle sheath. After the center is pulled out, the stainless steel needle cover can cover the needle. However, the lower end of the stainless steel needle cover is open, and the stainless steel needle cover cannot accommodate blood. Therefore, although this venous indwelling needle can prevent the danger of needle sticks, it cannot effectively prevent blood from splashing and polluting the environment when the guide needle core is drawn out.
实用新型内容Utility model content
有鉴于此，本实用新型的目的在于提供一种新型的防针刺静脉留置针，旨在解决现有防针刺静脉留置针在引导针芯抽出瞬间血液飞溅的问题。In view of this, the purpose of the present utility model is to provide a new type of anti-needle venous indwelling needle, which aims to solve the problem of blood splashing at the moment when the guide needle core is drawn out of the existing anti-needle puncture venous indwelling needle.
为了实现上述目的，本实用新型提供以下技术方案：In order to achieve the above object, the utility model provides the following technical solutions:
一种防针刺静脉留置针，包括静脉留置针本体和柔性针套，所述柔性针套内部具有容纳腔，所述柔性针套套设于所述静脉留置针本体的引导针芯上，所述柔性针套被配置为当所述引导针芯向外抽出时，所述柔性针套沿所述引导针芯滑移至所述引导针芯的针尖处，使所述引导针芯的针尖容纳于所述柔性针套的容纳腔内。An anti-needle venous indwelling needle comprises a venous indwelling needle body and a flexible needle sheath, the flexible needle sheath has a accommodating cavity inside, the flexible needle sheath is sheathed on a guiding needle core of the intravenous indwelling needle body, and the The flexible needle sleeve is configured such that when the guide needle core is drawn out, the flexible needle sleeve slides along the guide needle core to the needle tip of the guide needle core, so that the needle tip of the guide needle core is accommodated in the guide needle core. in the accommodating cavity of the flexible needle cover.
本技术方案中，由于当引导针芯从柔性套管中拔出后，柔性针套可以滑移到针尖处并笼罩针尖，一方面，可以防止针刺型职业暴露；另一方面，由于针尖被封闭在较为密闭的容纳腔内，因此可以有效收容针尖的血液，防止血液飞溅、造成污染。In this technical solution, after the guiding needle core is pulled out from the flexible sleeve, the flexible needle sleeve can slide to the needle tip and cover the needle tip. On the one hand, occupational exposure of acupuncture type can be prevented; It is enclosed in a relatively airtight accommodating cavity, so it can effectively accommodate the blood of the needle tip and prevent blood from splashing and causing pollution.
作为上述技术方案的优选，所述引导针芯上设置有凸起的第一阻挡部，所述柔性针套上设置有供所述引导针芯穿过的通孔，所述柔性针套上的更靠近所述针尖的通孔为第一通孔，所述第一通孔的孔径大于其余通孔的孔径，所述其余通孔的孔径小于所述第一阻挡部的宽度。本优选技术方案的有益效果在于，在逐渐向外抽出引导针芯期间，第一阻挡部可以首先较为轻松地通过第一通孔，此时引导针芯的针尖段逐渐被容纳腔包裹，当第二阻挡部遇到其余通孔时，由于其余通孔的孔径小于所述第一阻挡部的宽度，因此第一阻挡部难以通过其余通孔，因此引导针芯可以将柔性针套带离并抽出，抽出时，柔性针套笼罩在针尖处。As a preferred option of the above technical solution, the guiding needle core is provided with a convex first blocking portion, the flexible needle sleeve is provided with a through hole for the guiding needle core to pass through, and the flexible needle sleeve is provided with a through hole through which the guiding needle core passes. The through hole closer to the needle tip is the first through hole, the diameter of the first through hole is larger than that of the remaining through holes, and the diameter of the remaining through holes is smaller than the width of the first blocking portion. The beneficial effect of this preferred technical solution is that during the period when the guide needle core is gradually withdrawn outward, the first blocking portion can first pass through the first through hole relatively easily, and at this time, the needle tip section of the guide needle core is gradually wrapped by the accommodating cavity. When the second blocking part encounters the remaining through holes, since the diameter of the remaining through holes is smaller than the width of the first blocking part, it is difficult for the first blocking part to pass through the remaining through holes, so the guide needle core can take the flexible needle sleeve away and pull out , when withdrawn, the flexible needle cover covers the needle tip.
作为上述技术方案的优选，所述柔性针套位于所述静脉留置针本体的三通导管座之内，所述三通导管座的内壁上设置有用于限制所述柔性针套向外滑出的第二阻挡部；所述柔性针套还被配置为当所述引导针芯向外抽出时，所述引导针芯上的第一阻挡部通过所述柔性针套的第一通孔，所述引导针芯的第一阻挡部被所述柔性针套的其余通孔阻挡，当所述引导针芯的第一阻挡部被所述柔性针套的其余通孔阻挡后，所述柔性针套随所述引导针芯一起通过所述第二阻挡部。本优选技术方案的有益效果在于，通过设置第二阻挡部，可以防止柔性针套自动向外滑出，或者在引导针芯向外退出时，柔性针套直接被引导针芯的针杆段带出。As a preferred option of the above technical solution, the flexible needle sheath is located in the three-way catheter seat of the venous indwelling needle body, and the inner wall of the three-way catheter seat is provided with a sleeve for restricting the flexible needle sheath from sliding out. a second blocking part; the flexible needle sleeve is further configured such that when the guiding needle core is drawn out, the first blocking part on the guiding needle core passes through the first through hole of the flexible needle sleeve, and the The first blocking portion of the guide needle core is blocked by the remaining through holes of the flexible needle sleeve. After the first blocking portion of the guide needle core is blocked by the remaining through holes of the flexible needle sleeve, the flexible needle sleeve will follow. The guide pin cores pass through the second blocking portion together. The beneficial effect of this preferred technical solution is that, by setting the second blocking portion, the flexible needle sleeve can be prevented from sliding out automatically, or when the guiding needle core withdraws outward, the flexible needle sleeve is directly carried by the needle bar segment of the guiding needle core out.
作为上述技术方案的优选，所述第一通孔的孔径小于等于所述第一阻挡部的宽度。本优选技术方案的有益效果在于，由于第一通孔的孔径较小，因此可以增强所述容纳腔的密闭性，提高对血液的收容性能。As a preferred option of the above technical solution, the diameter of the first through hole is less than or equal to the width of the first blocking portion. The beneficial effect of the preferred technical solution is that, since the diameter of the first through hole is small, the airtightness of the accommodating cavity can be enhanced, and the accommodating performance of blood can be improved.
作为上述技术方案的优选，所述柔性针套包括至少两个彼此串联的子针套，每个子针套内具有容纳腔，每个子针套上设置有供所述引导针芯穿过的通孔；所述柔性针套的更靠近所述针尖的子针套为第一子针套，所述第一子针套的长度大于所述第一阻挡部与所述针尖之间的距离。本优选技术方案的有益效果在于，通过设置多个彼此串联的柔性针套，可以增加所述其余通孔的数量，从而使所述防针刺留置针更保险。即使第一阻挡部穿过了第一个所述其余通孔，还会有第二、第三个所述其余通孔可用于阻挡所述第一阻挡部。As a preferred option of the above technical solution, the flexible needle sleeve includes at least two sub-needle sleeves connected in series with each other, each sub-needle sleeve has a accommodating cavity, and each sub-needle sleeve is provided with a through hole for the guiding needle core to pass through ; The sub-needle cover of the flexible needle cover that is closer to the needle tip is the first sub-needle cover, and the length of the first sub-needle cover is greater than the distance between the first blocking part and the needle tip. The beneficial effect of this preferred technical solution is that, by arranging a plurality of flexible needle covers connected in series with each other, the number of the remaining through holes can be increased, thereby making the needle stick prevention indwelling needle more secure. Even if the first blocking portion passes through the first remaining through holes, there are still second and third remaining through holes that can be used to block the first blocking portion.
作为上述技术方案的优选，所述柔性针套由乳胶材料制成。本优选技术方案的有益效果在于，乳胶在医学领域具有较广泛的应用，其含有的橡树蛋白能抑制病菌及过敏原潜伏。此外，其还具有超高弹性及透气防菌性。As a preference of the above technical solution, the flexible needle cover is made of latex material. The beneficial effect of the preferred technical solution is that the latex has a wider application in the medical field, and the oak protein contained in the latex can inhibit the latent of germs and allergens. In addition, it also has ultra-high elasticity and breathable antibacterial properties.
作为上述技术方案的优选，所述静脉留置针本体的针座的长度大于等于1cm。本优选技术方案的有益效果在于，由于针座的长度较一般静脉留置针的针座更长，便于医护人员拿捏。As a preference of the above technical solution, the length of the needle seat of the intravenous indwelling needle body is greater than or equal to 1 cm. The beneficial effect of the preferred technical solution is that, because the length of the needle seat is longer than that of a general intravenous indwelling needle, it is convenient for medical staff to handle.
作为上述技术方案的优选，所述针座的尾端设置有凸起的外缘。本优选技术方案的有益效果在于，通过设置所述外缘，不仅可以进一步便于医护人员拿捏，还可以提高拿捏稳定性，进而提高穿刺的稳定性。As a preferred option of the above technical solution, the tail end of the needle seat is provided with a raised outer edge. The beneficial effect of the preferred technical solution is that, by setting the outer edge, it is not only easier for medical staff to handle, but also improves the stability of handling, thereby improving the stability of puncture.
与现有技术相比，本实用新型具有以下有益效果：Compared with the prior art, the utility model has the following beneficial effects:
1、由于当引导针芯从柔性套管中拔出后，柔性针套可以滑移到针尖处并笼罩针尖，一方面，可以防止针刺型职业暴露；另一方便，由于针尖被封闭在较为密闭的容纳腔内，因此可以有效收容针尖的血液，防止血液飞溅、造成污染。1. When the guide needle core is pulled out from the flexible sleeve, the flexible needle sleeve can slide to the needle tip and cover the needle tip. On the one hand, it can prevent acupuncture occupational exposure; on the other hand, it is convenient because the needle tip is enclosed in a relatively In the airtight accommodating cavity, it can effectively accommodate the blood of the needle tip, preventing blood from splashing and causing pollution.
2、相比于现有的防针刺静脉留置针，本实用新型提供的防针刺静脉留置针的结构更简单，生产加工成本更低。2. Compared with the existing anti-needle puncture venous indwelling needle, the anti-needle puncture venous indwelling needle provided by the present invention has a simpler structure and lower production and processing cost.
附图说明Description of drawings
为了更清楚地说明本实用新型实施例的技术方案，下面将对实施例中所需要使用的附图作简要介绍，应当理解，以下附图仅示出了本实用新型的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关附图。In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings required in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, therefore It should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can also be obtained from these drawings without any creative effort.
图1所示为实施例中提供的防针刺静脉留置针的结构示意图。FIG. 1 is a schematic diagram showing the structure of the anti-needle venous indwelling needle provided in the embodiment.
图2所示为实施例中提供的防针刺静脉留置针的使用示意图。FIG. 2 is a schematic diagram showing the use of the needle-stick-resistant venous indwelling needle provided in the embodiment.
图3所示为实施例中提供的防针刺静脉留置针的又一种使用示意图。FIG. 3 is a schematic diagram of another use of the needle-stick-resistant venous indwelling needle provided in the embodiment.
图中标号说明：Description of the labels in the figure:
10-柔性套管；11-容纳腔；12-第二通孔；13-其余通孔；20-三通导管座；21-第一接口；22-第二接口；23-分叉接口；24-柔性套管；25-针座；26-延长管；27-隔离塞；28-引导针芯；29-针尖；30-第一阻挡部；40-第二阻挡部；50-外缘。10-flexible sleeve; 11-accommodating cavity; 12-second through hole; 13-other through-holes; 20-three-way catheter seat; 21-first interface; 22-second interface; 23-forked interface; 24 - flexible cannula; 25 - needle hub; 26 - extension tube; 27 - isolation plug; 28 - guide needle; 29 - needle tip; 30 - first stop; 40 - second stop;
具体实施方式Detailed ways
下面将结合本实用新型实施例中附图，对本实用新型实施例中的技术方案进行清楚完整的描述。应当理解，此处所描述的具体实施例仅仅用于解释本实用新型，并不用于限定本实用新型。基于本实用新型的实施例，本领域技术人员在没有创造性劳动的前提下所获得的所有其他实施例，都属于本实用新型的保护范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present invention.
请参阅图1和图2所示，本实施例提供了一种防针刺静脉留置针，包括静脉留置针本体和柔性针套10，所述柔性针套10内部具有容纳腔11，所述柔性针套10套设于所述静脉留置针本体的引导针芯28上，所述柔性针套10被配置为当所述引导针芯28向外抽出时，所述柔性针套10沿所述引导针芯28滑移至所述引导针芯28的针尖29处，使所述引导针芯28的针尖29容纳于所述柔性针套10的容纳腔11内。Referring to FIGS. 1 and 2 , the present embodiment provides an anti-needle indwelling venous needle, including a venous indwelling needle body and a flexible needle sheath 10 , the flexible needle sheath 10 has a accommodating cavity 11 inside, and the flexible The needle sheath 10 is sheathed on the guide needle core 28 of the intravenous indwelling needle body, and the flexible needle sheath 10 is configured so that when the guide needle core 28 is drawn out, the flexible needle sheath 10 moves along the guide needle. The needle core 28 slides to the needle tip 29 of the guide needle core 28 , so that the needle tip 29 of the guide needle core 28 is accommodated in the accommodating cavity 11 of the flexible needle cover 10 .
使用时，由于当引导针芯28从柔性套管24中拔出后，柔性针套10可以滑移到针尖29处并笼罩针尖29，一方面，可以防止针刺型职业暴露；另一方面，由于针尖29被封闭在较为密闭的容纳腔11内，当针尖29被笼罩后，针尖29上的血液被容纳腔11收集到，由于血液的表面张力和容纳腔11外部的大气压，使血液不易从容纳腔11内渗出，因此可以有效收容针尖29的血液，防止血液飞溅、造成污染。During use, when the guide needle core 28 is pulled out from the flexible sleeve 24, the flexible needle sleeve 10 can slide to the needle tip 29 and cover the needle tip 29, on the one hand, it can prevent acupuncture occupational exposure; on the other hand, Since the needle tip 29 is enclosed in the relatively airtight accommodating cavity 11, when the needle tip 29 is covered, the blood on the needle tip 29 is collected by the accommodating cavity 11. Due to the surface tension of the blood and the atmospheric pressure outside the accommodating cavity 11, the blood cannot easily escape from the cavity 11. The accommodating cavity 11 seeps out, so the blood of the needle tip 29 can be effectively accommodated to prevent the blood from splashing and causing pollution.
此外，如图1所示，静脉留置针本体的具体结构可以包括具有第一接口21、第二接口22和分叉接口23的三通导管座20、固定连接于所述第一接口21的柔性套管24、可拆卸连接于所述第二接口22的针座25、固定连接于所述分叉接口23的延长管26和设置于所述三通导管座20之内的隔离塞27；其中，针座25上固定插接有引导针芯28，引导针芯28穿过隔离塞27并插入柔性套管24中。应当理解的，所述静脉留置针本体的具体结构并不局限于此，所述静脉留置针本体的具体结构并不用于限定本实用新型。In addition, as shown in FIG. 1 , the specific structure of the intravenous indwelling needle body may include a three-way catheter hub 20 having a first interface 21 , a second interface 22 and a bifurcated interface 23 , a flexible catheter fixedly connected to the first interface 21 . The cannula 24, the needle hub 25 detachably connected to the second port 22, the extension tube 26 fixedly connected to the bifurcated port 23, and the isolation plug 27 arranged in the three-way catheter hub 20; wherein , the needle hub 25 is fixedly inserted with a guide needle core 28 , and the guide needle core 28 passes through the isolation plug 27 and is inserted into the flexible sleeve 24 . It should be understood that the specific structure of the vein indwelling needle body is not limited to this, and the specific structure of the vein indwelling needle body is not intended to limit the present invention.
基于上述防针刺静脉留置针，本实施例提供以下可实施方式的举例。Based on the above-mentioned anti-needle puncture venous indwelling needle, this embodiment provides the following examples of possible implementations.
具体的，请参阅图1和图2所示，所述引导针芯28上设置有凸起的第一阻挡部30，所述第一凸起部可以与引导针芯28一体成型，例如，第一阻挡部30的高度可以介于0.1～0.5mm。所述柔性针套10上设置有供所述引导针芯28穿过的通孔，所述柔性针套10上的更靠近所述针尖29的通孔为第一通孔12，所述第一通孔12的孔径大于其余通孔13的孔径，所述其余通孔13的孔径小于所述第一阻挡部30的宽度，此处所述的第一阻挡部30的宽度，指的是引导针芯28的直径加第一阻挡部30的厚度。在逐渐向外抽出引导针芯28期间，第一阻挡部30可以首先较为轻松地通过第一通孔12，此时引导针芯28的针尖29段逐渐被容纳腔11包裹，当第二阻挡部40遇到其余通孔13时，由于其余通孔13的孔径小于所述第一阻挡部30的宽度，因此第一阻挡部30难以通过其余通孔13，因此引导针芯28可以将柔性针套10带离并抽出，抽出时，柔性针套10笼罩在针尖29处。Specifically, please refer to FIG. 1 and FIG. 2 , the guide pin core 28 is provided with a raised first blocking portion 30 , and the first raised portion can be integrally formed with the guide pin core 28 , for example, the The height of a blocking portion 30 may be between 0.1 and 0.5 mm. The flexible needle cover 10 is provided with a through hole for the guide needle core 28 to pass through, and the through hole on the flexible needle cover 10 that is closer to the needle tip 29 is the first through hole 12 . The diameter of the through hole 12 is larger than that of the remaining through holes 13 , and the diameter of the remaining through holes 13 is smaller than the width of the first blocking portion 30 . The width of the first blocking portion 30 here refers to the guide pin The diameter of the core 28 plus the thickness of the first barrier portion 30 . During the period when the guide needle core 28 is gradually drawn out, the first blocking portion 30 can first pass through the first through hole 12 relatively easily. At this time, the needle tip 29 of the guide needle core 28 is gradually wrapped by the receiving cavity 11 . 40 When encountering the remaining through holes 13, since the diameter of the remaining through holes 13 is smaller than the width of the first blocking part 30, it is difficult for the first blocking part 30 to pass through the remaining through holes 13, so the guide needle core 28 can remove the flexible needle sleeve. 10 is taken away and withdrawn. When withdrawn, the flexible needle cover 10 covers the needle tip 29.
考虑到在引导针芯28逐渐抽出期间，引导针芯28的针杆段对柔性针套10上的所述其余通孔13的摩擦力可能会带着柔性针套10同步向外抽出，导致柔性针套10不能沿引导针芯28相对滑移至针尖29处，因此可以在所述三通导管座20的内壁上设置有用于限制所述柔性针套10向外滑出的第二阻挡部40，所述第二阻挡部40可以是一圈凸缘，所述第二阻挡部40可以与三通导管座20一体成型。所述柔性针套10位于所述三通导管座20之内，并位于隔离塞27和第二阻挡部40之间。当所述引导针芯28向外抽出时，所述引导针芯28上的第一阻挡部30通过所述柔性针套10的第一通孔12，所述引导针芯28的第一阻挡部30被所述柔性针套10的其余通孔13阻挡，当所述引导针芯28的第一阻挡部30被所述柔性针套10的其余通孔13阻挡后，所述柔性针套10随所述引导针芯28一起通过所述第二阻挡部40。Considering that during the gradual withdrawal of the guide needle core 28, the frictional force of the needle bar section of the guide needle core 28 on the remaining through holes 13 on the flexible needle sleeve 10 may cause the flexible needle sleeve 10 to be pulled out synchronously, resulting in flexible The needle sheath 10 cannot relatively slide along the guide needle core 28 to the needle tip 29, so the inner wall of the three-way catheter hub 20 can be provided with a second blocking portion 40 for restricting the flexible needle sheath 10 from sliding out. , the second blocking portion 40 may be a ring of flanges, and the second blocking portion 40 may be integrally formed with the three-way conduit socket 20 . The flexible needle sleeve 10 is located inside the three-way catheter hub 20 and between the isolation plug 27 and the second blocking portion 40 . When the guide needle core 28 is drawn out, the first blocking portion 30 on the guide needle core 28 passes through the first through hole 12 of the flexible needle sleeve 10 , and the first blocking portion of the guide needle core 28 passes through the first through hole 12 of the flexible needle sleeve 10 . 30 is blocked by the remaining through holes 13 of the flexible needle sleeve 10. After the first blocking portion 30 of the guiding needle core 28 is blocked by the remaining through holes 13 of the flexible needle sleeve 10, the flexible needle sleeve 10 will follow The guide pins 28 pass through the second blocking portion 40 together.
为了进一步增强所述容纳腔11的密闭性，提高对血液的收容性能，所述第一通孔12的孔径小于等于所述第一阻挡部30的宽度。第一阻挡部30欲穿越第一通孔12，需要一定的外力使第一通孔12的孔径变形扩大，第一阻挡部30顺利穿越第一通孔12后，第一通孔12的孔径收缩，因此所述容纳腔11的密闭性更好。In order to further enhance the airtightness of the accommodating cavity 11 and improve the accommodating performance of blood, the diameter of the first through hole 12 is less than or equal to the width of the first blocking portion 30 . For the first blocking portion 30 to pass through the first through hole 12 , a certain external force is required to deform and expand the diameter of the first through hole 12 . After the first blocking portion 30 passes through the first through hole 12 smoothly, the diameter of the first through hole 12 shrinks. , so the airtightness of the accommodating cavity 11 is better.
此外，请参阅图1至图3所示，所述柔性针套10包括至少两个彼此串联的子针套，每个子针套内具有容纳腔11，每个子针套上设置有供所述引导针芯28穿过的通孔；所述柔性针套10的更靠近所述针尖29的子针套为第一子针套，所述第一子针套的长度大于所述第一阻挡部30与所述针尖29之间的距离。通过设置多个彼此串联的柔性针套10，可以增加所述其余通孔13的数量，从而使所述防针刺留置针更保险。即使第一阻挡部30穿过了第一个所述其余通孔13，还会有第二个所述其余通孔13可用于阻挡所述第一阻挡部30。In addition, please refer to FIG. 1 to FIG. 3 , the flexible needle sleeve 10 includes at least two sub-needle sleeves connected in series with each other, each sub-needle sleeve has a accommodating cavity 11, and each sub-needle sleeve is provided with a guide for the guide The through hole through which the needle core 28 passes; the sub-needle cover of the flexible needle cover 10 that is closer to the needle tip 29 is the first sub-needle cover, and the length of the first sub-needle cover is greater than that of the first blocking part 30 distance from the needle tip 29. By arranging a plurality of flexible needle covers 10 connected in series with each other, the number of the remaining through holes 13 can be increased, thereby making the needle stick-proof indwelling needle more secure. Even if the first blocking portion 30 passes through the first remaining through hole 13 , there will be a second remaining through hole 13 that can be used to block the first blocking portion 30 .
所述柔性针管可具体由乳胶材料制成，乳胶在医学领域具有较广泛的应用，其含有的橡树蛋白能抑制病菌及过敏原潜伏。此外，其还具有超高弹性及透气防菌性。The flexible needle tube can be specifically made of latex material, latex has a wide range of applications in the medical field, and the oak protein contained in the latex can inhibit the latent of germs and allergens. In addition, it also has ultra-high elasticity and breathable antibacterial properties.
为了便于医护人员拿捏，所述静脉留置针本体的针座25可以延长，例如，所述静脉留置针本体的针座25的长度大于等于1cm。并且，还可在针座25的尾端设置有凸起的外缘50。通过设置所述外缘50，不仅可以进一步便于医护人员拿捏，还可以提高拿捏稳定性，进而提高穿刺的稳定性。In order to facilitate the handling by medical staff, the needle seat 25 of the intravenous indwelling needle body can be extended, for example, the length of the needle seat 25 of the intravenous indwelling needle body is greater than or equal to 1 cm. In addition, a raised outer edge 50 may also be provided at the rear end of the needle hub 25 . By arranging the outer edge 50 , not only can it be further facilitated by the medical staff to handle, but also the stability of handling can be improved, thereby improving the stability of puncture.
以上所述，仅为本实用新型的具体实施方式，但本实用新型的保护范围并不局限于此，任何熟悉本技术领域的技术人员，在本实用新型揭露的技术范围内，可轻易想到变化或替换，都应该涵盖在本实用新型的保护范围内。The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes within the technical scope disclosed by the present invention. Or replacement should be covered within the protection scope of the present invention.
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| CN201821841417.0U CN209137603U (en) | 2018-11-08 | 2018-11-08 | A kind of anti-venous indwelling needle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110693579A (en) * | 2019-09-24 | 2020-01-17 | 徐州医科大学附属医院 | A safety sleeve type ultrasound-guided PICC puncture needle |
| CN110975061A (en) * | 2019-11-19 | 2020-04-10 | 王君霞 | Puncture-preventing remaining needle capable of continuously supplying liquid |
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2018
- 2018-11-08 CN CN201821841417.0U patent/CN209137603U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110693579A (en) * | 2019-09-24 | 2020-01-17 | 徐州医科大学附属医院 | A safety sleeve type ultrasound-guided PICC puncture needle |
| CN110975061A (en) * | 2019-11-19 | 2020-04-10 | 王君霞 | Puncture-preventing remaining needle capable of continuously supplying liquid |
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