CN110368070B

Movatterモバイル変換

Info

Publication number: CN110368070B
Application number: CN201810324419.0A
Authority: CN
Inventors: 王增涛; 张洁; 董爱萍
Original assignee: Individual
Current assignee: Shanghai Ace Medical Technology Co ltd
Priority date: 2018-04-12
Filing date: 2018-04-12
Publication date: 2023-04-07
Anticipated expiration: 2038-04-12
Also published as: CN110368070A

Abstract

The invention belongs to the field of medical instruments, and relates to a blood pressure dynamic guide core puncture trocar; the trocar consists of a semipermeable membrane stopper, a piston and guide core assembly, a metal puncture needle, an indwelling cannula and an infusion connecting base assembly; the semipermeable membrane stopper, the piston, the core guide assembly, the metal puncture needle, the indwelling cannula and the infusion connection base assembly are fixedly connected in sequence. The use result shows that the trocar takes the blood pressure of the blood return as the power to put into the blood vessel puncture trocar of the guide core; the trocar is provided with a guide core which does not need manual operation, so that the puncture tube placing failure caused by the displacement of a needle tip entering a blood vessel due to interference factors can be avoided; the guide core does not need manual intervention, and accidents such as artery tearing or interlayer and the like caused by external force can be avoided; the trocar can improve the success rate of the clinical vascular puncture catheterization and reduce the clinical puncture complications.

Description

Translated fromChinese

血压动力导芯穿刺套管针Blood pressure powered core puncture trocar

技术领域technical field

本发明属医疗器械领域，涉及一种血压动力导芯穿刺套管针；所述套管针可提高临床血管穿刺置管成功率、降低临床穿刺并发症。The invention belongs to the field of medical devices and relates to a blood pressure dynamic guide core puncture trocar; the trocar can improve the success rate of clinical blood vessel puncture and catheterization and reduce clinical puncture complications.

背景技术Background technique

现代外科医学发展至今，西医在临床中占主导治疗地位，而且静脉输液和动脉穿刺等技术在西医临床中被普遍使用；其中，静脉穿刺技术因人体的静脉解剖的浅表性故难度不大，但伴随着医疗技术的发展动脉穿刺技术已经开始逐渐使用于临床干预如，有创动脉测压、DSA导管术等，所属干预措施均需要临床医师进行动脉穿刺，而人体动脉因为其解剖的特殊性往往不浅表，需要操作者具有一定的临床经验靠触摸定位进行盲穿，实践显示，盲穿定位到动脉较简单，但是见血后将现有的动脉穿刺针套管置入血管中这一过程常常出现问题，其中最多的是见血却置管不成功。不成功的原因很多，其中最多的是在置入塑料套管的过程中，比针芯粗的塑料套管将血管推走，因为塑料套管不具备穿刺能力，而具有穿刺功能的金属针芯此时已经不在患者的目标血管中了，从而致使置管不成功。Since the development of modern surgical medicine, Western medicine has dominated clinical treatment, and techniques such as intravenous infusion and arterial puncture have been widely used in Western medicine. Among them, venipuncture is not difficult due to the superficial anatomy of the human body’s veins. However, with the development of medical technology, arterial puncture technology has been gradually used in clinical interventions, such as invasive arterial manometry, DSA catheterization, etc., all interventions require clinicians to perform arterial puncture, and human arteries are due to the particularity of their anatomy. It is often not superficial, and the operator needs to have certain clinical experience to perform blind puncture by touch positioning. Practice shows that it is relatively simple to locate the artery blindly, but it is difficult to insert the existing arterial puncture needle cannula into the blood vessel after seeing blood There are often problems in the process, the most common of which is that blood is seen but catheterization is unsuccessful. There are many reasons for the failure, and the most common one is that during the insertion of the plastic sleeve, the plastic sleeve, which is thicker than the needle core, pushes the blood vessel away, because the plastic sleeve does not have the ability to puncture, while the metal needle core with the puncture function At this time, it is no longer in the patient's target blood vessel, resulting in unsuccessful catheterization.

近年随着技术的不断改进出现了带导芯的穿刺针，该种穿刺针是在穿刺针尾段见血后人工将导芯置入血管，然后塑料套管沿着穿刺针芯和导芯置入血管；该技术提高了穿刺成功率，但存在有弊端，即在见血后需要人工将导芯置入血管中，该过程中人工操作可能造成针尖的移位从而造成置导芯不顺利；临床实践中，穿刺针尾端回血时整个穿刺针的回血针芯的尖端针孔不一定全部在血管中，有可能是针尖位于血管侧壁划破血管造成回血，此时人工置导芯常因力量问题造成动脉撕裂或夹层等事故。In recent years, with the continuous improvement of technology, a puncture needle with a guide core has appeared. This kind of puncture needle is manually inserted into the blood vessel after the tail of the puncture needle sees blood, and then the plastic sleeve is placed along the puncture needle core and the guide core. into the blood vessel; this technology improves the success rate of puncture, but there are disadvantages, that is, the guide core needs to be manually inserted into the blood vessel after blood is seen, and the manual operation may cause the displacement of the needle tip during the process, resulting in the difficulty of guide core placement; In clinical practice, when blood is returned from the tail end of the puncture needle, the needle holes at the tip of the blood return needle core of the entire puncture needle may not all be in the blood vessel. Strength problems cause accidents such as arterial tears or dissections.

基于现有技术的现状，本申请的发明人拟提供一种血压动力导芯穿刺套管针；该套管针依靠回血的血液压力为动力，置入导芯的血管穿刺套管针；该套管针带有导芯，且导芯不需人工操作，能避免人为因素干扰造成已经进入血管的针尖移位致使穿刺置管失败；此外，因所述导芯不靠人工干预，能避免外力造成的动脉撕裂或夹层等事故，可提高临床血管穿刺置管成功率、降低临床穿刺并发症。Based on the status quo of the prior art, the inventor of the present application intends to provide a blood pressure power guide core puncture trocar; the trocar relies on the blood pressure of returning blood as the power, and is inserted into the blood vessel puncture trocar of the guide core; The needle is equipped with a guide core, and the guide core does not require manual operation, which can avoid the human factor interference caused by the displacement of the needle tip that has entered the blood vessel, resulting in the failure of puncture and catheter placement; in addition, because the guide core does not rely on manual intervention, it can avoid external force. Accidents such as arterial tearing or dissection can improve the success rate of clinical vascular puncture and catheterization and reduce clinical puncture complications.

发明内容Contents of the invention

本发明的目的是克服现有技术的缺陷或不足，提供一种血压动力导芯穿刺套管针；所述套管针可提高临床血管穿刺置管成功率、降低临床穿刺并发症。The purpose of the present invention is to overcome the defects or deficiencies of the prior art, and provide a blood pressure dynamic guide core puncture trocar; the trocar can improve the success rate of clinical blood vessel puncture and catheterization, and reduce clinical puncture complications.

本发明的套管针依靠回血的血液压力为动力，置入导芯的血管穿刺套管针；该套管针带有导芯，且导芯不需人工操作，能避免人为因素干扰造成已经进入血管的针尖移位致使穿刺置管失败；所述导芯不需人工干预，能避免外力造成的动脉撕裂或夹层等事故。The trocar of the present invention relies on the blood pressure of returning blood as the power, and inserts the guide core into the blood vessel puncture trocar; The displacement of the needle tip of the blood vessel leads to the failure of puncture and tube placement; the guide core does not require manual intervention, and can avoid accidents such as arterial tearing or dissection caused by external force.

具体的，本血压动力导芯穿刺套管针，其特征在于，主要由半透膜封堵器1、活塞与导芯组件2、金属穿刺针3、留置套管和输液连接底座组件4组成；所述半透膜封堵器1、活塞与导芯组件2、金属穿刺针3、留置套管和输液连接底座组件4依次固定连接；Specifically, the blood pressure dynamic guide core puncture trocar is characterized in that it is mainly composed of a semipermeable membrane occluder 1, a piston and a guide core assembly 2, ametal puncture needle 3, an indwelling cannula, and an infusionconnection base assembly 4; The semi-permeable membrane occluder 1, the piston and guide core assembly 2, themetal puncture needle 3, the indwelling cannula and the infusionconnection base assembly 4 are fixedly connected in sequence;

本发明中，所述活塞与导芯组件2由超滑活塞9、连接活塞的导芯组成；所述超滑活塞9的中心设有孔；In the present invention, the piston and guide core assembly 2 is composed of a super-slip piston 9 and a guide core connected to the piston; the center of the super-slip piston 9 is provided with a hole;

本发明中，所述导芯分为导芯的中空圆柱部分10和导芯的星型部分11；所述导芯的星型部分11中，相邻的角形成的空隙在后段汇入所述导芯的中空圆柱部分10的圆柱内，所述导芯整体位于中空的金属穿刺针芯8内；所述导芯可采用是塑料或金属材料制备；In the present invention, the guide core is divided into a hollowcylindrical part 10 of the guide core and a star-shaped part 11 of the guide core; in the star-shaped part 11 of the guide core, the gaps formed by adjacent corners merge into the In the cylinder of the hollowcylindrical part 10 of the guide core, the guide core is integrally located in the hollow metalpuncture needle core 8; the guide core can be made of plastic or metal material;

本发明中，所述导芯的星型部分11的头端为钝性圆头且头端光滑，前端为斜面且与所述金属针芯斜面在同一平面内；该导芯的星型部分11中的星型空间可方便血流通过；所述导芯横截面直径小于所述中空的金属穿刺针芯8的中空直径，可穿行于中空的金属穿刺针芯8内；In the present invention, the head end of the star-shaped part 11 of the guide core is a blunt round head and the head end is smooth, and the front end is an inclined plane and is in the same plane as the inclined surface of the metal needle core; the star-shaped part 11 of the guide core The star-shaped space in the center can facilitate the passage of blood; the cross-sectional diameter of the guide core is smaller than the hollow diameter of the hollow metalpuncture needle core 8, and can pass through the hollow metalpuncture needle core 8;

本发明中，所述导芯的中空圆柱部分10的圆柱部分，从所述中空的金属穿刺针芯8与所述储血管5的连接处走出，所述导芯后段与所述中空的金属穿刺针芯8之间血液不能通过；In the present invention, the cylindrical part of the hollowcylindrical part 10 of the guide core walks out from the joint between the hollow metalpuncture needle core 8 and thestorage vessel 5, and the rear section of the guide core and the hollow metal Blood cannot pass between thepuncture needle cores 8;

本发明中，所述超滑活塞9为圆形，直径5-15mm，超滑活塞的圆点连接中空的金属导芯尾端12；该超滑活塞9位于储血管5内，与储血管5匹配，可在储血管内带动金属导芯做上下的活塞运动，超滑活塞的运动不能越过储血管靠近针芯端的开孔。In the present invention, the super-slip piston 9 is circular, with a diameter of 5-15mm, and the dot of the super-smooth piston is connected to the hollow metal guidecore tail end 12; Matching, the metal guide core can be driven to move the piston up and down in the storage vessel, and the movement of the super-smooth piston cannot pass through the opening of the storage vessel near the needle core.

本发明中，所述金属穿刺针3包括储血管主体5、金属穿刺针芯固定底座7、中空的金属穿刺针芯8；所述储血管主体5靠近金属针芯端设有开孔6；In the present invention, themetal puncture needle 3 includes a storage vesselmain body 5, a metal puncture needlecore fixing base 7, and a hollow metalpuncture needle core 8; the storage vesselmain body 5 is provided with anopening 6 near the end of the metal needle core;

本发明中，所述中空的金属穿刺针芯8根据实际需要可制成多种型号，其头端锋利呈斜型，利于刺破皮肤穿刺血管；In the present invention, the hollow metalpuncture needle core 8 can be made into various types according to actual needs, and its head end is sharp and oblique, which is beneficial to puncture the skin and puncture blood vessels;

所述储血管5位于所述中空的金属穿刺针芯8的后端，储血管5内壁为中空圆柱，直径5-15mm，内径前后一致，内表面光滑，材料透明，长度10-30mm；该储血管5靠近所述中空的金属穿刺针芯8的一端设有开孔6，可通外界空气。Thestorage vessel 5 is located at the rear end of the hollow metalpuncture needle core 8. The inner wall of thestorage vessel 5 is a hollow cylinder with a diameter of 5-15 mm, the inner diameter is consistent, the inner surface is smooth, the material is transparent, and the length is 10-30 mm; One end of theblood vessel 5 close to the hollow metalpuncture needle core 8 is provided with anopening 6 through which outside air can pass.

本发明中，所述半透膜封堵器1位于所述储血管5后端，所述封堵器主体13设有半透膜14，半透膜可允许空气通过，血液不能透过。In the present invention, the semipermeable membrane occluder 1 is located at the rear end of thestorage vessel 5, and themain body 13 of the occluder is provided with asemipermeable membrane 14, which allows air to pass through but blood cannot pass through.

本发明所述留置套管和输液连接底座4中，所述金属针芯8外为可留置在患者体内的塑料套管，塑料套管与金属针芯紧密套在一起，血液不能通过，该套管尾端为标准的带螺旋接头的输液连接头。In the indwelling cannula and theinfusion connection base 4 of the present invention, themetal needle core 8 is a plastic sleeve that can be placed in the patient's body, and the plastic sleeve and the metal needle core are tightly sleeved together so that blood cannot pass through. The end of the tube is a standard infusion connection with a screw joint.

使用结果表明，本发明所述套管针依靠回血的血液压力为动力，置入导芯的血管穿刺套管针；该套管针带有导芯，且导芯不需人工操作，避免了人为因素干扰造成已经进入血管的针尖移位，致使穿刺置管失败；此外，因所述导芯不靠人工干预，避免了人工暴力问题造成动脉撕裂或夹层等事故；本发明所述套管针可提高临床血管穿刺置管成功率、降低临床穿刺并发症。The result of use shows that the trocar of the present invention relies on the blood pressure of returning blood as the power, and inserts the guide core into the blood vessel puncture trocar; the trocar has a guide core, and the guide core does not need manual operation, avoiding artificial Factor interference causes the needle tip that has entered the blood vessel to shift, resulting in the failure of puncture and catheter placement; in addition, because the guide core does not rely on manual intervention, accidents such as arterial tearing or dissection caused by manual violence are avoided; the trocar described in the present invention It can improve the success rate of clinical vascular puncture catheterization and reduce clinical puncture complications.

为了便于理解，以下将通过具体的附图和实施例对本发明的血压动力导芯穿刺套管针进行详细地描述。需要特别指出的是，具体实例和附图仅是为了说明，显然本领域的普通技术人员可以根据本文说明，在本发明的范围内对本发明做出各种各样的修正和改变，这些修正和改变也纳入本发明的范围内。For ease of understanding, the blood pressure dynamic core puncture trocar of the present invention will be described in detail below with reference to specific drawings and embodiments. It should be pointed out that the specific examples and accompanying drawings are only for illustration. Obviously, those skilled in the art can make various amendments and changes within the scope of the present invention according to the description herein. These amendments and Modifications are also included within the scope of the present invention.

附图说明Description of drawings

图1为本发明的血压动力导芯穿刺套管针的外观示意图。Fig. 1 is a schematic diagram of the appearance of the puncture trocar of the blood pressure dynamic guide core of the present invention.

图2为本发明的血压动力导芯穿刺套管针的结构示意图，Fig. 2 is a schematic structural view of the puncture trocar of the blood pressure dynamic guide core of the present invention,

其中，1为半透膜封堵器、2为活塞与导芯组件、3为金属穿刺针、4为留置套管和输液连接底座组件。Among them, 1 is a semi-permeable membrane occluder, 2 is a piston and guide core assembly, 3 is a metal puncture needle, 4 is an indwelling cannula and an infusion connection base assembly.

图3为本血压动力导芯穿刺套管针中所述金属穿刺针的结构示意图，Fig. 3 is a structural schematic diagram of the metal puncture needle in the blood pressure dynamic guide core puncture trocar,

其中，5为储血管、6为开孔、7为金属穿刺针芯固定底座、8为中空的金属穿刺针芯。Among them, 5 is a storage vessel, 6 is an opening, 7 is a metal puncture needle core fixing base, and 8 is a hollow metal puncture needle core.

图4本血压动力导芯穿刺套管针中所述活塞与导芯组件的结构示意图，Fig. 4 is a structural schematic diagram of the piston and guide core assembly described in the blood pressure dynamic guide core puncture trocar,

其中，A为导芯和超滑活塞部分外观结构示意图，B为导芯的剖面图，Among them, A is a schematic diagram of the appearance structure of the guide core and the super-slip piston, B is a cross-sectional view of the guide core,

9为中心有孔的超滑活塞、10为导芯的中空圆柱部分、11为导芯的星型部分、12为导芯中空圆柱与活塞连接处的开口。9 is a super-slippery piston with a hole in the center, 10 is a hollow cylindrical part of the guide core, 11 is a star-shaped part of the guide core, and 12 is the opening at the joint between the guide core hollow cylinder and the piston.

图5为本血压动力导芯穿刺套管针的所述半透膜封堵器结构示意图，Fig. 5 is a structural schematic diagram of the semipermeable membrane occluder of the blood pressure dynamic guide core puncture trocar,

其中，13为封堵器主体、14为半透膜。Wherein, 13 is the main body of the occluder, and 14 is the semipermeable membrane.

具体实施方式Detailed ways

实施例1Example 1

如图1～5所示，本血压动力导芯穿刺套管针，主要由半透膜封堵器1、活塞与导芯组件2、金属穿刺针3、留置套管和输液连接底座组件4组成；所述半透膜封堵器1、活塞与导芯组件2、金属穿刺针3、留置套管和输液连接底座组件4依次固定连接；As shown in Figures 1 to 5, the blood pressure dynamic guide core puncture trocar is mainly composed of a semi-permeable membrane occluder 1, a piston and guide core assembly 2, ametal puncture needle 3, an indwelling cannula and an infusionconnection base assembly 4 ; The semi-permeable membrane occluder 1, the piston and the guide core assembly 2, themetal puncture needle 3, the indwelling sleeve and the infusionconnection base assembly 4 are fixedly connected in sequence;

所述活塞与导芯组件2由超滑活塞9、连接活塞的导芯组成；所述超滑活塞9的中心设有孔；Described piston and guide core assembly 2 are made up of super slippery piston 9, the guide core that connects piston; The center of described super slippery piston 9 is provided with hole;

所述导芯分为导芯的中空圆柱部分10和导芯的星型部分11；所述导芯的星型部分11中，相邻的角形成的空隙在后段汇入所述导芯的中空圆柱部分10的圆柱内，所述导芯整体位于中空的金属穿刺针芯8内；所述导芯可采用是塑料或金属材料制备；The guide core is divided into a hollowcylindrical part 10 of the guide core and a star-shaped part 11 of the guide core; in the star-shaped part 11 of the guide core, the gaps formed by adjacent corners merge into the guide core at the back section In the cylinder of the hollowcylindrical part 10, the guide core is entirely located in the hollow metalpuncture needle core 8; the guide core can be made of plastic or metal material;

所述导芯的星型部分11的头端为钝性圆头且头端光滑，前端为斜面且与所述金属针芯斜面在同一平面内；该导芯的星型部分11中的星型空间可方便血流通过；所述导芯横截面直径小于所述中空的金属穿刺针芯8的中空直径，可穿行于中空的金属穿刺针芯8内；The head end of the star-shaped part 11 of the guide core is a blunt round head and the head end is smooth, and the front end is a bevel and is in the same plane as the inclined surface of the metal needle core; the star-shaped part 11 of the guide core The space can facilitate the passage of blood; the cross-sectional diameter of the guide core is smaller than the hollow diameter of the hollow metalpuncture needle core 8, and can pass through the hollow metalpuncture needle core 8;

所述导芯的中空圆柱部分10的圆柱部分，从所述中空的金属穿刺针芯8与所述储血管5的连接处走出，所述导芯后段与所述中空的金属穿刺针芯8之间血液不能通过；The cylindrical part of the hollowcylindrical part 10 of the guide core goes out from the junction of the hollow metalpuncture needle core 8 and thestorage vessel 5, and the rear section of the guide core and the hollow metalpuncture needle core 8 blood cannot pass between

所述超滑活塞9为圆形，直径5-15mm，超滑活塞的圆点连接中空的金属导芯尾端12；该超滑活塞9位于储血管5内，与储血管5匹配，可在储血管内带动金属导芯做上下的活塞运动，超滑活塞的运动不能越过储血管靠近针芯端的开孔。The super-slip piston 9 is circular with a diameter of 5-15mm, and the dot of the super-smooth piston is connected to the hollow metal guidecore tail end 12; The storage vessel drives the metal guide core to move the piston up and down, and the movement of the super-smooth piston cannot pass through the opening of the storage vessel near the needle core.

所述金属穿刺针3包括储血管主体5、金属穿刺针芯固定底座7、中空的金属穿刺针芯8；所述储血管主体5靠近金属针芯端设有开孔6；Themetal puncture needle 3 includes a storage vesselmain body 5, a metal puncture needlecore fixing base 7, and a hollow metalpuncture needle core 8; the storage vesselmain body 5 is provided with anopening 6 near the end of the metal needle core;

所述中空的金属穿刺针芯8根据实际需要可制成多种型号，其头端锋利呈斜型，利于刺破皮肤穿刺血管；The hollow metalpuncture needle core 8 can be made into various types according to actual needs, and its head end is sharp and oblique, which is beneficial to puncture the skin and puncture blood vessels;

所述储血管5内部可放置超滑活塞9，与所述超滑活塞9匹配；所述中空的金属穿刺针芯8的头端斜面与所述导芯的星型部分11的头端斜面在同一平面内。A super-slip piston 9 can be placed inside thestorage vessel 5 to match the super-smooth piston 9; the head end slope of the hollow metalpuncture needle core 8 and the head end slope of the star-shaped part 11 of the guide core are in the same position in the same plane.

所述半透膜封堵器1位于所述储血管5后端，所述封堵器主体13设有半透膜14，半透膜可允许空气通过，血液不能透过。The semipermeable membrane occluder 1 is located at the rear end of thestorage vessel 5, and themain body 13 of the occluder is provided with asemipermeable membrane 14, which allows air to pass through but blood cannot pass through.

所述留置套管和输液连接底座4中，所述金属针芯8外为可留置在患者体内的塑料套管，塑料套管与金属针芯紧密套在一起，血液不能通过，该套管尾端为标准的带螺旋接头的输液连接头。In the indwelling sleeve and theinfusion connection base 4, the outside of themetal needle core 8 is a plastic sleeve that can be indwelled in the patient's body. The plastic sleeve and the metal needle core are tightly sleeved together so that blood cannot pass through. The end is a standard infusion connection with a screw connector.

实施例2Example 2

当临床需要对患者做穿刺置管术时，首先嘱患者摆好穿刺体位或者按穿刺要求摆好体位，局部消毒后在穿刺目标点上方进针，金属针芯携带导芯和套管依次刺破皮肤、穿过皮下组织进入血管，当金属针芯进入血管时血液会因为自身的压力通过导芯的星型槽与金属针芯内壁之间的空隙流向超滑活塞处，通过超滑活塞上的导芯开口流进储血管尾端与超滑活塞之间的腔隙，此时停止进针，让血液继续流出来填充储血管的后段，填充满的血液会产生和被穿刺的血管内相同的压力，该压力施加给所述活塞、储血管侧壁和后端的半透膜封堵器，施加的压力会抵消掉活塞另一面的大气压和超滑活塞与储血管内壁的摩擦力产生推力推动超滑活塞向患者端运动，同样活塞会推动星型导芯向患者端运动，所述导芯的前端会因推力滑出金属针芯进入到患者的血管内，当活塞前行的行程结束，可一只手固定所述储血管部分，另一只手将塑料套管沿着金属针芯和位于患者血管内的露出金属针芯的星型导芯段滑入患者的血管中。当套管完全进入患者体内后，一手固定塑料套管的尾端一手拉住储血管将金属针芯连并活塞导丝一块从套管中拔出；然后连接输液管或者测压管到塑料套管的尾端，操作完成。When it is clinically necessary to perform puncture catheterization on a patient, first ask the patient to set up the puncture position or position according to the puncture requirements. After local disinfection, insert the needle above the puncture target point. Pass through the subcutaneous tissue and enter the blood vessel. When the metal needle core enters the blood vessel, the blood will flow to the super-slip piston through the gap between the star-shaped groove of the guide core and the inner wall of the metal needle core due to its own pressure, and pass through the guide core on the super-slip piston. The opening flows into the cavity between the end of the storage vessel and the super-smooth piston. At this time, the needle is stopped, and the blood continues to flow out to fill the rear section of the storage vessel. The filled blood will generate the same pressure as the punctured vessel , the pressure is applied to the piston, the side wall of the storage vessel and the semipermeable membrane occluder at the rear end, and the applied pressure will offset the atmospheric pressure on the other side of the piston and the friction between the superslip piston and the inner wall of the storage vessel to generate a thrust to push the superslip The piston moves toward the patient, and the piston will also push the star-shaped guide core to move towards the patient. The front end of the guide core will slide out of the metal needle core and enter the patient's blood vessel due to the thrust. One hand fixes the part of the storage vessel, and the other hand slides the plastic sheath into the patient's blood vessel along the metal needle core and the star-shaped guide core segment that exposes the metal needle core in the patient's blood vessel. When the cannula has completely entered the patient's body, fix the end of the plastic cannula with one hand and pull the storage vessel with the other hand to pull out the metal needle core and the piston guide wire from the cannula; then connect the infusion tube or pressure measuring tube to the plastic sheath end of the tube and the operation is complete.

上述实施例的结果表明，本发明所述套管针依靠回血的血液压力为动力，置入导芯的血管穿刺套管针；该套管针带有导芯，且导芯不需人工操作，避免了人为因素干扰造成已经进入血管的针尖移位，致使穿刺置管失败；此外，因所述导芯不靠人工干预，避免了人工暴力问题造成动脉撕裂或夹层等事故；本发明所述套管针可提高临床血管穿刺置管成功率、降低临床穿刺并发症。The results of the above examples show that the trocar of the present invention relies on the blood pressure of the returned blood as the power, and inserts the guide core into the blood vessel puncture trocar; the trocar has a guide core, and the guide core does not need manual operation. It avoids the displacement of the needle point that has entered the blood vessel caused by the interference of human factors, resulting in the failure of puncture and catheterization; in addition, because the guide core does not rely on manual intervention, accidents such as arterial tearing or dissection caused by manual violence are avoided; The trocar can improve the success rate of clinical vascular puncture and catheterization, and reduce clinical puncture complications.

Claims

Translated fromChinese

1.一种血压动力导芯穿刺套管针，其特征在于，主要由半透膜封堵器（1）、活塞与导芯组件（2）、金属穿刺针（3）、留置套管和输液连接底座组件（4）组成；所述半透膜封堵器（1）、活塞与导芯组件（2）、金属穿刺针（3）、留置套管和输液连接底座组件（4）依次固定连接；1. A blood pressure dynamic guide core puncture trocar, characterized in that it mainly consists of a semi-permeable membrane occluder (1), a piston and guide core assembly (2), a metal puncture needle (3), an indwelling cannula and an infusion solution The connecting base assembly (4); the semi-permeable membrane occluder (1), the piston and guide core assembly (2), the metal puncture needle (3), the indwelling cannula and the infusion connecting base assembly (4) are fixedly connected in sequence ;

所述活塞与导芯组件（2）由超滑活塞（9）、连接活塞的导芯组成；所述超滑活塞（9）的中心设有孔；导芯分为导芯的中空圆柱部分（10）和导芯的星型部分（11）；所述导芯的星型部分（11）中，相邻的角形成的空隙在后段汇入所述导芯的中空圆柱部分（10）的圆柱内；The piston and guide core assembly (2) is composed of a super slippery piston (9) and a guide core connected to the piston; the center of the super slippery piston (9) is provided with a hole; the guide core is divided into a hollow cylindrical part of the guide core ( 10) and the star-shaped part (11) of the guide core; in the star-shaped part (11) of the guide core, the gap formed by the adjacent corners merges into the hollow cylindrical part (10) of the guide core in the rear section inside the cylinder;

所述金属穿刺针（3）包括储血管主体（5）、金属穿刺针芯固定底座（7）、中空的其头端锋利呈斜型的金属穿刺针芯（8）；所述储血管主体（5）靠近金属针芯端设有开孔（6）；The metal puncture needle (3) includes a blood vessel main body (5), a metal puncture needle core fixing base (7), a hollow metal puncture needle core (8) whose head end is sharp and oblique; the blood vessel main body ( 5) An opening (6) is provided near the end of the metal needle core;

所述储血管主体（5）位于所述中空的金属穿刺针芯（8）的后端，该储血管主体（5）内壁为中空圆柱，直径5-15mm，内径前后一致，内表面光滑，材料透明，长度10-30mm；The storage vessel main body (5) is located at the rear end of the hollow metal puncture needle core (8). The inner wall of the storage vessel main body (5) is a hollow cylinder with a diameter of 5-15mm, the inner diameter is consistent, the inner surface is smooth, and the material Transparent, length 10-30mm;

所述中空的金属穿刺针芯（8）的头端斜面与所述导芯的星型部分（11）的头端斜面在同一平面内；所述导芯的星型部分（11）横截面直径小于所述中空的金属穿刺针芯（8）的中空直径，穿行于中空的金属穿刺针芯（8）内。The inclined surface of the head end of the hollow metal puncture needle core (8) and the inclined surface of the head end of the star-shaped part (11) of the guide core are in the same plane; the cross-sectional diameter of the star-shaped part (11) of the guide core smaller than the hollow diameter of the hollow metal puncture needle core (8), passing through the hollow metal puncture needle core (8).

2.按权利要求1所述的血压动力导芯穿刺套管针，其特征在于，所述导芯的星型部分（11）的头端为钝性圆头且头端光滑、前端为斜面。2. The blood pressure dynamic core puncture trocar according to claim 1, characterized in that, the head end of the star-shaped part (11) of the guide core is a blunt round head, the head end is smooth, and the front end is an inclined plane.

3.按权利要求1所述的血压动力导芯穿刺套管针，其特征在于，所述超滑活塞（9）为圆形，直径5-15mm。3. The blood pressure dynamic guide core puncture trocar according to claim 1, characterized in that the super-smooth piston (9) is circular with a diameter of 5-15 mm.

4.按权利要求1所述的血压动力导芯穿刺套管针，其特征在于，所述中空的金属穿刺针芯（8）根据实际需要可制成多种型号。4. The blood pressure dynamic core puncture trocar according to claim 1, characterized in that the hollow metal puncture needle core (8) can be made into various types according to actual needs.

5.按权利要求1所述的血压动力导芯穿刺套管针，其特征在于，所述储血管主体（5）内部可放置超滑活塞（9），与所述超滑活塞（9）匹配。5. The blood pressure dynamic guide core puncture trocar according to claim 1, characterized in that, a super-smooth piston (9) can be placed inside the storage vessel main body (5) to match the super-smooth piston (9) .