WO2012171193A1 - Anti-overflow catheter assembly for indwelling needle - Google Patents
Anti-overflow catheter assembly for indwelling needle Download PDFInfo
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- WO2012171193A1 WO2012171193A1 PCT/CN2011/075796 CN2011075796W WO2012171193A1 WO 2012171193 A1 WO2012171193 A1 WO 2012171193A1 CN 2011075796 W CN2011075796 W CN 2011075796W WO 2012171193 A1 WO2012171193 A1 WO 2012171193A1
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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
- A61M25/00—Catheters; Hollow probes
- A61M25/0097—Catheters; Hollow probes characterised by the hub
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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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M2039/0036—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use characterised by a septum having particular features, e.g. having venting channels or being made from antimicrobial or self-lubricating elastomer
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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
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0606—"Over-the-needle" catheter assemblies, e.g. I.V. catheters
Definitions
- the medical staff In use, after successful puncture of the flexible catheter with a puncture steel needle, the medical staff is required to apply pressure on the skin directly above the puncture vessel to close the blood vessel, and then quickly withdraw the puncture steel needle, insert the infusion closure joint, and compress the blood vessel to minimize The blood continues to escape outward through the steel needle and the catheter as it exits the puncture needle.
- the above-mentioned techniques have the following disadvantages: First, the operation of the acupressure method is slightly inappropriate, and the blood outflow cannot be avoided, thereby causing blood pollution and causing safety hazards to medical personnel; secondly, the operation process of the indwelling needle is cumbersome. It requires skilled skills and rich experience, which will cause greater psychological pressure on medical staff and patients.
- the gap of the seal needs to have a certain length, which is slightly larger than the radius of the upper sealing piece, so that the intermediate sealing section needs to provide a structure to cooperate with the slit, and the intermediate sealing section needs
- flat structure is the best choice, can be flat, or flat oval.
- Figure 6 is a schematic view showing the structure of another sealing angle of the sealing base in the sealed needleless joint of the present invention.
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- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
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- Engineering & Computer Science (AREA)
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- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
An anti-overflow catheter assembly for an indwelling needle comprises a flexible catheter (1), a catheter seat (2) connected with one end of the catheter (1), and a sealing needleless adaptor (3). The sealing needleless adaptor (3) comprises a sealing base (32) and a sealing element (31). One end of the sealing base (32) is installed at the outer end of the catheter seat (2). The sealing element (31) is a soft elastic component, and integrally consists of an upper sealing sheet (311), a lower sealing sheet (313) and a middle sealing section (312). A centrally-located closing slit (314) is provided on the end face of the upper sealing sheet (311). The slit (314) passes from the upper sealing sheet (311), through the middle sealing section (312), and into the lower sealing sheet (313). The length of the slit (314) is longer than the radius of the upper sealing sheet (311). The sealing base (32) has a cylindrical inner cavity running through from left to right, in which the sealing element (31) is installed. The upper sealing sheet (311) and the lower sealing sheet (313) are hermetically secured on the two longitudinal end faces of the inner cavity of the sealing base (32) respectively, and there is a redundant space between the middle sealing section (312) and the cylindrical inner cavity. The whole needleless adaptor has a simple structure and a small quantity of components, and thus has a low cost.
Description
本发明涉及一种适用于血管内的医疗器械，特别是一种留置针防溢血导管组件。其可适用于各种留置针，特别是开放性留置针，或者是高压输液场合。
The present invention relates to a medical device suitable for use in an intravascular, and more particularly to an indwelling needle anti-hemorrhage catheter assembly. It can be applied to a variety of indwelling needles, especially open indwelling needles, or high pressure infusions.
背景技术 Background technique
现有技术中，留置针包括有导管组件和针管组件，导管组件包括有软性导管以及与导管一端连接的导管座，针管组件包括穿刺钢针、安装着穿刺钢针的针座以及与导管座连接的连接构件。使用前，穿刺钢针插接在软性导管中，并露出针尖，针座通过连接构件与导管座连接。使用时，带有穿刺钢针的软性导管穿刺成功后，需要医务人员在被穿刺血管正上方皮肤上施加压力以封闭血管，然后迅速退出穿刺钢针，插入输液封闭接头，压迫血管可以尽量减少在退出穿刺钢针时血液继续通过钢针和导管向外溢出。但是，上述技术存在的不足之处在于：一是这种指压法操作稍有不当，仍然避免不了血液外流，从而造成血液污染，对医护人员造成安全隐患；二是该留置针的操作过程繁琐，需要熟练的技巧和丰富的经验，对医护人员和病患都会造成较大的心理压力。
In the prior art, the indwelling needle comprises a catheter assembly and a needle tube assembly, the catheter assembly comprising a flexible catheter and a catheter hub connected to one end of the catheter, the needle tube assembly comprising a puncture steel needle, a needle holder mounted with a puncture steel needle, and a catheter holder Connected connecting members. Before use, the puncture needle is inserted into the flexible catheter and the needle tip is exposed, and the hub is connected to the catheter hub through the connecting member. In use, after successful puncture of the flexible catheter with a puncture steel needle, the medical staff is required to apply pressure on the skin directly above the puncture vessel to close the blood vessel, and then quickly withdraw the puncture steel needle, insert the infusion closure joint, and compress the blood vessel to minimize The blood continues to escape outward through the steel needle and the catheter as it exits the puncture needle. However, the above-mentioned techniques have the following disadvantages: First, the operation of the acupressure method is slightly inappropriate, and the blood outflow cannot be avoided, thereby causing blood pollution and causing safety hazards to medical personnel; secondly, the operation process of the indwelling needle is cumbersome. It requires skilled skills and rich experience, which will cause greater psychological pressure on medical staff and patients.
为了解决上述问题，本领域技术人员采用了各种隔离肝素帽，一般的有针接头会带来二次穿刺的安全隐患，而且穿刺肝素帽容易带离肝素帽的的塑胶微粒，使其进入人体，造成对病患的二次伤害，因此目前在逐步使用无针接头，如中国专利ZL200620025110.4公开的一种正压进液接头；中国专利95197269.3公开的一种无针医用接头；中国专利ZL200610033682.1公开的一种无针接头，上述的各种无针接头零部件多，生产安装程序复杂，成本极高，使得现有的市售留置针价格居高不下，造成了医院的高成本和病患的高就医费用；且接入的输液需要流经各个部件，尽管各个部件已经消毒，但仍然会存在细菌感染的威胁，输液不够直接，一旦某个部件出现错位或变形，就会导致其失效，应用效果不好。
In order to solve the above problems, those skilled in the art have adopted various isolation heparin caps, and the general needle joints may bring a safety hazard of secondary puncture, and the puncture heparin cap easily brings the plastic particles away from the heparin cap into the human body. , causing secondary injury to the patient, so the needle-free joint is currently being used gradually, such as a positive pressure liquid inlet joint disclosed in Chinese Patent ZL200620025110.4; a needle-free medical joint disclosed in Chinese Patent 95197269.3; Chinese patent ZL200610033682 .1 disclosed a needleless joint, the above various needleless joint parts are numerous, the production and installation procedures are complicated, and the cost is extremely high, so that the price of the existing commercial indwelling needle is high, resulting in high cost of the hospital and The patient's high medical expenses; and the incoming infusion needs to flow through the various components. Although the components have been sterilized, there is still a threat of bacterial infection. The infusion is not direct enough. Once a component is misaligned or deformed, it will cause it. Invalid, the application is not good.
发明内容 Summary of the invention
本发明的目的在于根据现有技术的不足之处而提供一种结构简单，成本低廉，输液效果好的留置针防溢血导管组件。
The object of the present invention is to provide an indwelling needle anti-hemorrhage catheter assembly with simple structure, low cost and good infusion effect according to the deficiencies of the prior art.
本发明的目的是通过以下途径来实现的： The object of the present invention is achieved by the following means:
留置针防溢血导管组件，包括有软性导管以及与导管一端连接的导管座，其结构要点在于，还包括有一种密封无针接头，该无针接头包括有密封基座和密封件，密封基座的一端部安装在导管座的外端部；密封件为软质弹性构件，由一体化的上密封片、下密封片以及中间密封段构成，上密封片的端面设有一条穿过中心密闭缝隙，该缝隙经由上密封片，穿过中间密封段，贯通下密封片，缝隙长度大于上密封片半径；密封基座有一左右贯通的圆柱形内腔，密封件安装在密封基座的该内腔中，上密封片及下密封片分别密闭固定在密封基座的内腔纵向两端面上，中间密封段与圆柱形内腔之间具有冗余空间。
The indwelling needle anti-hemorrhage catheter assembly comprises a flexible catheter and a catheter hub connected to one end of the catheter, the structural point of which further comprises a sealed needleless connector comprising a sealing base and a sealing member, a sealing base One end of the seat is mounted on the outer end of the catheter seat; the sealing member is a soft elastic member, which is composed of an integrated upper sealing piece, a lower sealing piece and an intermediate sealing section, and the end surface of the upper sealing piece is provided with a through-center sealing a slit, the slit passes through the upper sealing piece, passes through the intermediate sealing section, and penetrates the lower sealing piece, the slit length is larger than the radius of the upper sealing piece; the sealing base has a cylindrical inner cavity penetrating left and right, and the sealing member is installed inside the sealing base In the cavity, the upper sealing piece and the lower sealing piece are respectively tightly fixed on the longitudinal end faces of the inner cavity of the sealing base, and the intermediate sealing section and the cylindrical inner cavity have a redundant space.
在安装时，直接将一体化成型的密封件压入密封基座，并将上密封片、下密封片分别固定连接在密封基座的两端面，形成密封无针接头，然后将密封基座与导管座及针管组件连接起来，使用时，将输液或针筒的锥形接头直接压入上密封片中的长条缝隙，由于中间密封段与密封基座圆柱形内腔之间具有冗余空间，因此当锥形接头进入中间密封段时，该密封段在密封基座圆柱形内腔中可以变形扩张，形成输液通道；随着中间密封段的扩张，下密封片上的缝隙也随之扩开，输液器或者针筒中的药液就可以直接输送到导管座内腔中，并经由导管进入血管中，实现直接的输液，避免了输液通道曲折、漫长而导致的输液效果差，存在细菌感染的问题。而且，整个无针接头结构简单，零部件少，因而成产安装成本低廉，使得安装后的留置针价格低于现有市售价格的不足十分之一，经济效果可观，减轻了医院的工作成本和病患的就医成本。
During installation, the integrally formed sealing member is directly pressed into the sealing base, and the upper sealing piece and the lower sealing piece are respectively fixedly connected to the both end faces of the sealing base to form a sealed needleless joint, and then the sealing base and the sealing base are The catheter hub and the needle tube assembly are connected, and when used, the infusion or the tapered joint of the syringe is directly pressed into the long slit in the upper sealing sheet, because of the redundant space between the intermediate sealing section and the cylindrical inner cavity of the sealing base Therefore, when the tapered joint enters the intermediate sealing section, the sealing section can be deformed and expanded in the cylindrical inner cavity of the sealing base to form an infusion channel; as the intermediate sealing section expands, the gap on the lower sealing piece also expands The liquid medicine in the infusion set or the syringe can be directly transported into the lumen of the catheter socket, and enters the blood vessel through the catheter to realize direct infusion, thereby avoiding the infusion of the infusion channel, resulting in poor infusion effect, and bacterial infection. problem. Moreover, the entire needleless joint has a simple structure and few parts, so the production and installation cost is low, so that the price of the indwelling needle after installation is less than one tenth of the existing commercial price, and the economic effect is considerable, and the work of the hospital is alleviated. Cost and medical cost of the patient.
本发明可以进一步具体为： The invention can be further specifically:
密封基座的一端面为弧形端面，密封件的上密封片与该弧形端面固定连接而形成内凹的弧形构造。 One end surface of the sealing base is an arc-shaped end surface, and the upper sealing piece of the sealing member is fixedly connected with the curved end surface to form a concave curved structure.
内凹的弧形构造使得上密封片中的缝隙以外紧内松的形态存在，便于锥形接头插入，操作起来省时省力；另一方面，缝隙在内凹的弧形面上更为紧密的闭合，当锥形接头拔出后，其可以更快、更好的实现回复和密闭。
The concave curved structure allows the tightness of the slit in the upper sealing sheet to exist, which facilitates the insertion of the tapered joint, saves time and labor in operation; on the other hand, the slit is more tight on the concave curved surface. Closed, when the taper joint is pulled out, it can achieve recovery and sealing faster and better.
密封件的下密封片外侧端面上具有一种三角柱形凸舌，一侧柱面位于缝隙上，密封件中的缝隙出口与三角形凸舌的另外两侧柱面形成的长形尖顶重合。
The outer sealing end of the lower sealing piece of the sealing member has a triangular column-shaped tongue, and one side cylindrical surface is located on the slit, and the slit outlet in the sealing member coincides with the elongated apex formed by the other two cylindrical faces of the triangular tongue.
三角形凸舌的两侧柱面在上密封片上形成对顶的斜面坡，当穿刺钢针撤出导管组件后，回血将快速充满导管座内腔，血液压力作用在该三角柱形凸舌的斜面坡上，从而压迫凸舌的缝隙，使之更为紧密的闭合，有效的防止溢血。该密封片的这种特殊构造使得留置针在输液时，即可适用于有针输液接头和无针接头驳接场合，特别是适合高压输液场合。
The cylindrical faces on both sides of the triangular tongue form a sloped slope on the upper sealing sheet. When the puncture steel needle is withdrawn from the catheter assembly, the blood return will quickly fill the lumen of the catheter seat, and blood pressure acts on the slope of the triangular cylindrical tongue. Upper, thereby pressing the gap of the tongue, making it more tightly closed, effectively preventing the bleeding. This special configuration of the sealing piece makes the indwelling needle suitable for needle-infusion joints and needle-free joints when infusion, especially for high-pressure infusion applications.
中间密封段为一种扁状构造，两侧面可以为平面，也可以是一种弧形面，密封件的缝隙重合于该扁状构造的轴心面。
The intermediate sealing section is a flat structure, and the two sides may be a flat surface or a curved surface, and the slit of the sealing member coincides with the axial surface of the flat structure.
为了便于锥形接头插入无针接头，密封件的缝隙需要有一定的长度，为略大于上密封片的半径，这样一来，中间密封段需要提供与该缝隙配合的结构，而且中间密封段需要有一定的扩张空间，扁状构造是最好的选择，可以是扁平状，或者是扁椭圆状。
In order to facilitate the insertion of the tapered joint into the needleless joint, the gap of the seal needs to have a certain length, which is slightly larger than the radius of the upper sealing piece, so that the intermediate sealing section needs to provide a structure to cooperate with the slit, and the intermediate sealing section needs There is a certain expansion space, flat structure is the best choice, can be flat, or flat oval.
本发明还可以进一步具体为： The invention may further be specifically:
密封件的上密封片和下密封片与密封基座通过一种黏胶固定连接。 The upper and lower sealing sheets of the seal are fixedly coupled to the sealing base by a glue.
这种方式安装操作简单，实现了导管组件上的封闭无菌内腔。 This type of installation is simple to operate and achieves a closed sterile lumen on the catheter assembly.
密封件的上密封片以一种紧配合安装在密封基座的一端面。 The upper sealing piece of the seal is mounted on one end surface of the sealing base in a tight fit.
这样可以不用引入第三种介质，但是密封效果略差。 This eliminates the need to introduce a third medium, but the sealing effect is slightly worse.
密封基座的外侧端面上分布有固定螺牙，密封基座通过该固定螺牙实现与输液接头或者留置针导管座或针管组件的活动连接。
A fixing screw is disposed on the outer end surface of the sealing base, and the sealing base realizes an active connection with the infusion connector or the indwelling needle catheter hub or the needle cannula assembly through the fixing screw.
根据医护操作规则，无针接头如同肝素帽一样，需要定期更换，因而需要提供一种活动连接的结构，使其便于更换。除此之外，带有螺纹的输液接头也可以通过该密封基座上的连接构件直接连接到无针接头上，无需插入密封件，更好的实现密封无针接头的防溢血功能。
According to the rules of medical practice, the needle-free connector, like the heparin cap, needs to be replaced periodically, so it is necessary to provide a structure for the movable connection, making it easy to replace. In addition, the threaded infusion connector can also be directly connected to the needleless connector through the connecting member on the sealing base, without the need to insert a sealing member, thereby better achieving the anti-hemorrhage function of the sealed needleless connector.
综上所述，本发明提供了一种新型的留置针防溢血导管组件，其提供了一种密封无针接头，其主要由一体化的密封件和密封基座构成，实现直接无菌输液，避免了输液通道曲折、漫长而导致的输液效果差，存在细菌感染的问题。而且，整个无针接头结构简单，零部件少，因而成产安装成本低廉，使得安装后的留置针价格低于现有市售价格的不足十分之一，经济效果可观，减轻了医院的工作成本和病患的就医成本。
In summary, the present invention provides a novel indwelling needle anti-hemorrhage catheter assembly that provides a sealed needleless connector that is primarily comprised of an integral seal and a sealed base for direct sterile infusion, The infusion channel is prevented from being twisted and long, and the infusion effect is poor, and there is a problem of bacterial infection. Moreover, the entire needleless joint has a simple structure and few parts, so the production and installation cost is low, so that the price of the indwelling needle after installation is less than one tenth of the existing commercial price, and the economic effect is considerable, and the work of the hospital is alleviated. Cost and medical cost of the patient.
附图说明 DRAWINGS
图1所示为本发明所述留置针防溢血导管组件的结构示意图； 1 is a schematic structural view of an indwelling needle anti-hemorrhage catheter assembly according to the present invention;
图2所示为本发明所述留置针防溢血导管组件中密封无针接头的结构示意图； 2 is a schematic structural view showing a sealed needleless joint in the indwelling needle anti-hemorrhage catheter assembly of the present invention;
图3所示为本发明所述密封无针接头中密封件的结构示意图； Figure 3 is a schematic view showing the structure of the sealing member in the sealed needleless joint of the present invention;
图4所示为本发明所述密封无针接头中密封件的不同于图3视图角度的结构示意图； Figure 4 is a schematic view showing the structure of the sealing member in the sealed needleless joint of the present invention, which is different from the angle of Figure 3;
图5所示为本发明所述密封无针接头中密封基座的结构示意图； Figure 5 is a schematic view showing the structure of a sealing base in the sealed needleless joint of the present invention;
图6所示为本发明所述密封无针接头中密封基座的另一视图角度的结构示意图； Figure 6 is a schematic view showing the structure of another sealing angle of the sealing base in the sealed needleless joint of the present invention;
图7所示为本发明所述留置针防溢血导管组件与针管组件组合的结构示意图。 Fig. 7 is a structural schematic view showing the combination of the indwelling needle anti-hemorrhage catheter assembly and the needle tube assembly of the present invention.
下面结合实施例对本发明做进一步描述。 The invention will be further described below in conjunction with the embodiments.
具体实施例 Specific embodiment
最佳实施例： Best embodiment:
参照附图1，留置针防溢血导管组件，包括有软性导管1、与导管1一端连接的导管座2、与导管座2另一端部连接的密封无针接头3、安装于导管座2的外侧壁，并与导管座2内腔连通的排气通道4，该排气通道中具有排气塞、以及同样安装于导管座2外侧壁，对称分布在排气通道4两侧的操作捏耳5。以下具体介绍密封无针接头：
Referring to Figure 1, the indwelling needle anti-hemorrhage catheter assembly comprises a flexible catheter 1, a catheter hub 2 connected to one end of the catheter 1, a sealed needleless connector 3 connected to the other end of the catheter hub 2, and a catheter-free connector 3 mounted to the catheter hub 2. An outer side wall and an exhaust passage 4 communicating with the inner cavity of the catheter seat 2, the exhaust passage having a vent plug, and an operation bucker also mounted on the outer side wall of the catheter seat 2 and symmetrically distributed on both sides of the exhaust passage 4 5. The following is a detailed description of the sealed needleless connector:
参照附图2，密封无针接头包括有密封件31和密封基座32： Referring to Figure 2, the sealed needleless joint includes a seal 31 and a seal base 32:
参照附图3和附图4，密封件31包括有一体化构造的上密封片311、中间密封段312和下密封片313，上密封片311的端面设有一条穿过中心密闭缝隙314（如图3所示），该缝隙314经由上密封片311，穿过中间密封段312，贯通下密封片313，缝隙314长度略大于上密封片311半径；中间密封段312为一种扁状构造，两侧面可以为平面，也可以是一种弧形面，密封件的缝隙重合于该扁状构造的轴心面；密封件的下密封片313外侧端面上具有一种三角柱形凸舌315，一侧柱面位于缝隙上，密封件中的缝隙314出口与三角形凸舌的另外两侧柱面形成的长形尖顶重合（如图4所示）。
Referring to Figure 3 and Figure 4, the sealing member 31 includes an upper sealing piece 311, an intermediate sealing portion 312 and a lower sealing piece 313 having an integrated structure, and an end surface of the upper sealing piece 311 is provided with a through-center sealing slit 314 (e.g. As shown in FIG. 3, the slit 314 passes through the upper sealing piece 311, passes through the intermediate sealing section 312, and penetrates the lower sealing piece 313. The length of the slit 314 is slightly larger than the radius of the upper sealing piece 311; the intermediate sealing section 312 is a flat structure. The two sides may be a flat surface, or may be a curved surface, the gap of the sealing member coincides with the axial surface of the flat structure; the outer sealing end surface of the lower sealing piece 313 of the sealing member has a triangular prism-shaped tongue 315, The side cylinder faces are located on the slit, and the outlet of the slit 314 in the seal coincides with the elongated apex formed by the other side cylinders of the triangular tab (as shown in FIG. 4).
参照附图5和附图6，密封基座32有一左右贯通的圆柱形内腔，外侧端面上分布有固定螺牙321，密封基座32通过该固定螺牙321实现与输液接头或者留置针导管组件或针管组件的活动连接。密封基座32的一端部为弧形端口322（如图6所示）；
Referring to FIG. 5 and FIG. 6, the sealing base 32 has a cylindrical inner cavity extending through the left and right sides, and a fixing screw 321 is disposed on the outer end surface. The sealing base 32 is realized by the fixing screw 321 and the infusion connector or the indwelling needle catheter. Active connection of components or syringe assemblies. One end of the sealing base 32 is an arcuate port 322 (as shown in FIG. 6);
根据上述密封件31和密封基座32的结构说明，进一步说明密封无针接头，参照附图2，密封件31的上密封片与密封基座32弧形端口通过一种胶固定粘接在一起，同样，下密封片也通过胶粘接在密封基座32的另一个端面上。上密封片在该弧形端口上形成内凹的弧形构造；位于上密封片上的缝隙314位于内凹的最低位置上。
According to the structural description of the sealing member 31 and the sealing base 32, the sealing needleless joint is further explained. Referring to FIG. 2, the upper sealing piece of the sealing member 31 and the arcuate port of the sealing base 32 are fixedly bonded together by a glue. Also, the lower sealing sheet is also bonded to the other end surface of the sealing base 32 by glue. The upper sealing sheet forms a concave arcuate configuration on the curved port; the slit 314 on the upper sealing sheet is located at the lowest position of the recess.
参照附图7，在本实施例中，留置针在出厂时，密封基座是与针管组件6通过其固定螺牙连接的，留置针针管组件上的穿刺钢针穿过软性导管1，并露出针尖，导管座2通过无针接头3与针管组件6连接。
Referring to Figure 7, in the present embodiment, the indwelling needle is shipped from the factory, the sealing base is connected to the needle cannula assembly 6 through its fixing screw, and the puncture steel needle on the indwelling needle needle assembly passes through the flexible catheter 1 and The needle tip is exposed and the catheter hub 2 is connected to the needle cannula assembly 6 via a needleless connector 3.
本发明未述部分与现有技术相同。 The parts not described in the present invention are the same as those in the prior art.
Claims (7)
- 留置针防溢血导管组件，包括有软性导管（1）以及与导管（1）一端连接的导管座（2），其特征在于，还包括有一种密封无针接头(3)，该无针接头(3)包括有密封基座(32)和密封件(31)，密封基座(32)的一端部安装在导管座(2)的外端部；密封件(31)为软质弹性构件，由一体化的上密封片(311)、下密封片(313)以及中间密封段(312)构成，上密封片(311)的端面设有一条穿过中心密闭缝隙(314)，该缝隙(314)经由上密封片(311)，穿过中间密封段(312)，贯通下密封片(313)，缝隙(314)长度大于上密封片半径；密封基座(32)有一左右贯通的圆柱形内腔，密封件(31)安装在密封基座(32)的该内腔中，上密封片（311）及下密封片（313）分别密闭固定在密封基座（32）的内腔纵向两端面上，中间密封段（312）与圆柱形内腔之间具有冗余空间。An indwelling needle anti-hemorrhage catheter assembly comprising a flexible catheter (1) and a catheter hub (2) coupled to one end of the catheter (1), characterized in that it further comprises a sealed needleless connector (3), the needleless connector (3) comprising a sealing base (32) and a sealing member (31), one end of the sealing base (32) is mounted on the outer end of the catheter socket (2); the sealing member (31) is a soft elastic member. The upper sealing piece (311), the lower sealing piece (313) and the intermediate sealing section (312) are formed. The end surface of the upper sealing piece (311) is provided with a through-center sealing gap (314), the slit (314). Passing through the upper sealing piece (311), through the intermediate sealing section (312), through the lower sealing piece (313), the length of the slit (314) is larger than the radius of the upper sealing piece; the sealing base (32) has a cylindrical inner diameter a cavity, a sealing member (31) is mounted in the inner cavity of the sealing base (32), and the upper sealing piece (311) and the lower sealing piece (313) are respectively fixedly fixed to the longitudinal end faces of the inner cavity of the sealing base (32). Upper, there is a redundant space between the intermediate sealing section (312) and the cylindrical inner cavity.
- 根据权利要求1所述的留置针防溢血导管组件，其特征在于，The indwelling needle anti-hemorrhage catheter assembly according to claim 1, wherein密封基座（32）的一端面为弧形端面，密封件（31）的上密封片（311）与该弧形端面固定连接而形成内凹的弧形构造。An end surface of the sealing base (32) is an arcuate end surface, and an upper sealing piece (311) of the sealing member (31) is fixedly coupled to the curved end surface to form a concave arcuate configuration.
- 根据权利要求1所述的留置针防溢血导管组件，其特征在于，The indwelling needle anti-hemorrhage catheter assembly according to claim 1, wherein密封件（31）的下密封片（313）外侧端面上具有一种三角柱形凸舌（315），一侧柱面位于缝隙上，密封件中的缝隙出口与三角柱形凸舌（315）的另外两侧柱面形成的长形尖顶重合。The lower sealing piece (313) of the sealing member (31) has a triangular column-shaped tongue (315) on the outer end surface thereof, one side cylinder surface is located on the slit, and the slit outlet in the sealing member and the triangular cylindrical tongue (315) are additionally The long apex formed by the cylindrical faces on both sides coincide.
- 根据权利要求1所述的留置针防溢血导管组件，其特征在于，The indwelling needle anti-hemorrhage catheter assembly according to claim 1, wherein中间密封段（312）为一种扁状构造，两侧面或者为平面，或者是一种弧形面，密封件（31）的缝隙（314）重合于该扁状构造的轴心面。The intermediate seal section (312) is of a flat configuration, the two sides are either planar or a curved face, and the slit (314) of the seal (31) coincides with the axial face of the flat structure.
- 根据权利要求1所述的留置针防溢血导管组件，其特征在于，The indwelling needle anti-hemorrhage catheter assembly according to claim 1, wherein密封件（31）的上密封片（311）和下密封片（313）与密封基座（32）通过一种黏胶固定连接。The upper sealing piece (311) and the lower sealing piece (313) of the sealing member (31) are fixedly coupled to the sealing base (32) by a glue.
- 根据权利要求1所述的留置针防溢血导管组件，其特征在于，The indwelling needle anti-hemorrhage catheter assembly according to claim 1, wherein密封件（31）的上密封片（311）以一种紧配合安装在密封基座（32）的一端面。The upper sealing piece (311) of the sealing member (31) is mounted on one end surface of the sealing base (32) with a tight fit.
- 根据权利要求1所述的留置针防溢血导管组件，其特征在于，The indwelling needle anti-hemorrhage catheter assembly according to claim 1, wherein密封基座（32）的外侧端面上分布有固定螺牙（321），密封基座（32）通过该固定螺牙（321）实现与输液接头或者留置针导管座或针管组件的活动连接。A fixing screw (321) is distributed on the outer end surface of the sealing base (32), and the sealing base (32) realizes an active connection with the infusion connector or the indwelling needle catheter hub or the needle cannula assembly through the fixing screw (321).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2011/075796 WO2012171193A1 (en) | 2011-06-16 | 2011-06-16 | Anti-overflow catheter assembly for indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2011/075796 WO2012171193A1 (en) | 2011-06-16 | 2011-06-16 | Anti-overflow catheter assembly for indwelling needle |
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| Publication Number | Publication Date |
|---|---|
| WO2012171193A1 true WO2012171193A1 (en) | 2012-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2011/075796 WO2012171193A1 (en) | 2011-06-16 | 2011-06-16 | Anti-overflow catheter assembly for indwelling needle |
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| Country | Link |
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| WO (1) | WO2012171193A1 (en) |
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