Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberCN101056667 B
Publication typeGrant
Application numberCN 200580038940
PCT numberPCT/EP2005/010596
Publication date3 Aug 2011
Filing date30 Sep 2005
Priority date30 Sep 2004
Also published asCA2587151A1, CA2587151C, CN101056667A, EP1804878A1, US8062247, US20090024078, WO2006034877A1
Publication number200580038940.9, CN 101056667 B, CN 101056667B, CN 200580038940, CN-B-101056667, CN101056667 B, CN101056667B, CN200580038940, CN200580038940.9, PCT/2005/10596, PCT/EP/2005/010596, PCT/EP/2005/10596, PCT/EP/5/010596, PCT/EP/5/10596, PCT/EP2005/010596, PCT/EP2005/10596, PCT/EP2005010596, PCT/EP200510596, PCT/EP5/010596, PCT/EP5/10596, PCT/EP5010596, PCT/EP510596
Inventors早川季伸, 星之内佑也, 蟹江信笃, 阿部一博
Applicant科维蒂恩股份公司
Export CitationBiBTeX, EndNote, RefMan
External Links: SIPO, Espacenet
Triple lumen catheter
CN 101056667 B
Abstract
A triple lumen catheter comprises a transfusion lumen (4), a blood feeding lumen (2) and a blood removing lumen (3). The transfusion lumen (4) has a distal end and a leading end portion (12, 12A), the leading end portion progressively reducing in diameter to a proximal end. A transfusion port (4a) is formed in the proximal end of the transfusion lumen. The blood feeding lumen (2) has a blood feeding port (2a) in a region of the proximal end of the leading end portion, the blood feeding port opening at least partially in an axial direction of the leading end portion. The blood removing lumen (3) includes a pair of blood removing ports (3a, 3b) provided in opposite side walls of the catheter, the blood removing lumen extending from a distal end at least to the blood removing ports.
Claims(15)  translated from Chinese
1. 一种三管腔导管,包括:导管体,所述导管体限定纵向轴线并且具有近尾端和远引导端,所述导管体具有形成血液供给管腔和血液移除管腔的内部分隔壁以及形成输液管腔的内部凸起部分,所述内部凸起部分从血液移除管腔的与内部分隔壁相对的内壁伸出,所述导管体具有邻近所述引导端且与所述血液供给管腔流体连通的血液供给口以及靠近所述引导端且与所述血液移除管腔流体连通的血液移除口;以及引导端形成部件,所述引导端形成部件安装到所述导管体的引导端并且具有输液通道,所述输液通道与所述导管体的输液管腔流体连通并且在远离所述导管体的输液口终止,所述引导端形成部件限定形成横向于所述纵向轴线的横截面,所述横截面的尺寸向着所述输液口减小。 A triple lumen catheter comprising: a catheter body, the catheter body defining a longitudinal axis and having a proximal and distal end of the leading end of the catheter body having a lumen and a blood removing lumen formed within the portion of the blood supply infusion lumen formed inside the partition wall and projecting portions, the inner wall of the inner portion of the partition wall opposite from the blood removing lumen extending internal raised portion, said catheter body having a leading end and adjacent the said blood blood feeding lumen in fluid communication with the supply port and close to the leading end and in fluid communication with the blood removing lumen and said blood removing port; and a leading end forming member, said forming member is mounted to the leading end of said catheter body The leading end and having a fluid passage, the fluid passage and fluid infusion lumen of the catheter body and in fluid communication with the catheter body away from the mouth of the termination, the leading end forming member defining a longitudinal axis transverse to the cross-section, the cross-sectional size decreases towards the infusion opening.
2.根据权利要求1所述的三管腔导管,其特征在于,所述导管体包括邻近所述引导端的倾斜表面,所述倾斜表面至少部分地限定形成所述血液供给口。 The triple lumen catheter according to claim 1, characterized in that said catheter body comprises a tilted guide surface adjacent said end of said inclined surface is formed at least partially defining said blood feeding port.
3.根据权利要求2所述的三管腔导管,其特征在于,所述倾斜表面与所述引导端间隔开,以限定形成台阶区域。 3. The three-lumen catheter according to claim 2, characterized in that said inclined surface of the leading end spaced apart to define a region forming step.
4.根据权利要求1所述的三管腔导管,其特征在于,所述导管体具有与所述血液移除管腔流体连通的第一和第二血液移除口。 4. The triple lumen catheter according to claim 1, characterized in that said catheter body having a blood removal lumen in fluid communication with said first and second blood removing ports.
5.根据权利要求4所述的三管腔导管,其特征在于,所述第一和第二血液移除口成大致直径相对关系。 5. The triple lumen catheter according to claim 4, characterized in that said first and second blood removing ports substantially diametrically opposed relationship.
6.根据权利要求1所述的三管腔导管,其特征在于,所述血液移除管腔限定形成大于所述血液供给管腔的横截面面积的横截面面积。 6. The triple lumen catheter according to claim 1, characterized in that the cross-sectional area of the blood removing lumen defining a blood feeding lumen is larger than the cross-sectional area.
7.根据权利要求2所述的三管腔导管,其特征在于,所述导管体的倾斜表面沿轴向方向向远端倾斜以跟随所述引导端形成部件的形状。 7. The triple lumen catheter according to claim 2, characterized in that the inclined surface of the catheter body distally inclined to follow the shape of the leading end forming member in the axial direction.
8.根据权利要求1所述的三管腔导管,其特征在于,所述引导端形成部件包括可插入所述血液移除管腔内的尾部,所述尾部具有的流动路径确定部分形成为渐缩的形状,从而在所述血液移除口内侧形成流动路径。 8. The triple lumen catheter according to claim 1, characterized in that said end forming member comprises a guide insert trailing the blood removing lumen, the flow path having a tail portion is formed as a gradually determined shrinking shape, thereby forming a flow path on the inside of the blood removing ports.
9.根据权利要求1所述的三管腔导管,其特征在于,所述内部凸起部分形成圆形横截面的所述输液管腔。 9. A triple lumen catheter according to claim 1, characterized in that said convex portion is formed inside of the circular cross-section infusion lumen.
10. 一种三管腔导管,包括:导管体,所述导管体限定形成纵向轴线并且具有近端和远端,所述导管体具有形成血液供给管腔和血液移除管腔的内部分隔壁以及限定形成输液管腔的内部凸起部分,所述内部凸起部分从血液移除管腔的与内部分隔壁相对的内壁伸出,所述导管体具有与所述血液供给管腔流体连通的血液供给口以及靠近所述血液供给口且与所述血液移除管腔流体连通的血液移除口,并且所述导管体还具有引导端部,所述引导端部邻近所述远端并且限定形成与所述输液管腔流体连通的输液口,所述输液口位于所述引导端部的引导端处,所述引导端部限定形成横向于所述纵向轴线的横截面,所述横截面的尺寸向着所述输液口减小。 10. A triple lumen catheter comprising: a catheter body, said catheter body defining a longitudinal axis and having a proximal end and a distal end, said catheter body having a lumen formed blood supply and the blood removing lumen inner wall portion and defining a raised portion inside the infusion lumen, the inner lumen of the raised portion is removed from the blood and internal dividing wall opposite the inner wall extends, said catheter body having a lumen in fluid communication with the blood supply of blood feeding port and adjacent to the blood feeding port and a blood removing lumen in fluid communication with the blood removing port and said catheter body further having a leading end portion of the leading end portion adjacent to said distal end and defining forming said infusion lumen in fluid communication with an infusion port, said fluid port is located at the end of the leading end of the guide portion, the leading end portion defining a longitudinal axis transverse to the cross-section, the cross-section size decreases toward the infusion port.
11.根据权利要求10所述的三管腔导管,其特征在于,所述导管体的血液供给口在开口表面处终止,所述开口表面沿轴向方向向着远端倾斜。 11. A triple lumen catheter according to claim 10, characterized in that the blood feeding port of the catheter body terminating in an opening at the surface, the opening surface is inclined in the axial direction toward the distal end.
12.根据权利要求11所述的三管腔导管,其特征在于,所述导管体的内部分隔壁是基本直线的,以限定形成第一和第二基本半圆形的管腔,所述第一和第二基本半圆形的管腔分别对应于所述血液供给管腔和所述血液移除管腔。 12. A triple lumen catheter according to claim 11, characterized in that the inner wall portion of said catheter body is substantially straight, is formed to define a first and a second substantially semicircular lumen, the first and a second substantially semicircular lumens respectively corresponding to the blood feeding lumen and the blood removing lumen.
13.根据权利要求12所述的三管腔导管,其特征在于,限定形成所述输液管腔的内部凸起部分布置在所述血液移除管腔中。 13. A triple lumen catheter according to claim 12, characterized in that the interior of the infusion lumen defining a convex portion disposed in said blood removing lumen.
14.根据权利要求13所述的三管腔导管,其特征在于,所述内部凸起部分形成圆形横截面的所述输液管腔。 14. A triple lumen catheter according to claim 13, characterized in that said convex portion is formed inside a circular cross-section of the infusion lumen.
15.根据权利要求10所述的三管腔导管,其特征在于,所述导管体包括相对的第一和第二血液移除口。 15. A triple lumen catheter according to claim 10, characterized in that said catheter body includes opposing first and second blood removing ports.
Description  translated from Chinese

三管腔导管 Triple lumen catheter

技术领域 Technical Field

[0001] 本发明涉及一种三管腔(多管腔)导管,该三管腔导管可用于监测血液透析、临时输液或中央静脉压力(以下称为CVP),并且更具体地但并不排他地涉及三管腔导管的结构,在该三管腔导管中,尤其在血液透析时,血液被平稳地供给和移除。 [0001] The present invention relates to a triple lumen (multi-lumen) catheter, the three lumen catheter can be used to monitor dialysis, infusion or temporary central venous pressure (hereinafter, referred to CVP), and more particularly, but not exclusively It relates to the structure of triple lumen catheter in the triple lumen catheter, especially when hemodialysis, blood is smoothly supplied and removed.

背景技术 Background

[0002] 近来,除了透析(用于供给和移除血液)的一般使用,由于传递输液流体的优点, 三管腔导管的采用已增加。 [0002] Recently, in addition to dialysis (for the supply and removal of blood) is generally used, due to the advantages of the infusion fluid transfer, the use of triple lumen catheter has increased. 由于导管必须沿导引线(guide wire)插入,所以目前可用的大多数三管腔导管都采用所谓的侧孔类型,其中在导管的侧面部分中形成血液供给口或血液移除口(例如,JP-A-2 209 159)。 Because the catheter must be inserted along the guide wire (guide wire), so most of the currently available triple lumen catheters are used so-called side hole type, which form the blood supply port or blood removing port on the side portion of the catheter (eg , JP-A-2 209 159). 例如,当血液供给口是侧孔的形式时,来自血液供给口的大量重新注入的血液被导向到血管壁上,以对血管施加刺激或产生湍流,从而在外周部分中易于出现血栓。 For example, when the blood supply port side of the hole is in the form of time, a lot of re-injection of blood from the blood supply port is directed to the vessel wall, blood vessels or to apply a stimulus to create turbulence, which tends to occur in the outer peripheral portion of the thrombus. 另外,当血液移除口是侧孔的形式时,导管受到血液移除管腔的负压的影响,该负压在移除血液时作用在血管壁上,从而经常出现差的血液移除。 Further, when the blood removing port is in the form of a side hole, influenced by the blood removing lumen catheter of negative pressure, the negative pressure in the blood when the vascular wall is removed, thereby often poor blood removal. 尤其当血液移除口和血液供给口都是侧孔形式并且布置在导管的轴向方向的两侧以相互面对时,差的血液移除的问题变得明显。 Especially when blood is removed and the blood supply port is port side of the hole forms an axial direction and arranged on both sides of the conduit to face each other, the problem of poor blood removal becomes apparent. 换言之,当侧孔式血液供给口和血液移除口布置成相互面对时,血液被引导沿垂直于导管的轴向方向离开血液供给口。 In other words, when the blood supply port side hole and blood removing ports arranged to face each other, the blood is directed perpendicular to leave the blood supply port along the axial direction of the catheter. 因此,导管在血管内的位置沿与导管的血液供给口相反的方向移动,并且位于与血液供给口相反侧的血液移除口变成与血管的内壁接触而堵塞血管,从而出现差的血液移除。 Thus, the opposite direction of the catheter in a blood vessel and the catheter location along the blood supply port to move, and with the blood feeding port located at the opposite side of the blood removing ports into contact with the inner wall of the blood vessel becomes clogged blood vessels, so that blood shift difference occurs In addition. 如上所述,导管受到血液移除管腔的负压的影响,从而使血液移除口在移除血液时被吸向血管壁。 As described above, the blood removing lumen catheter influenced by negative pressure, so that the blood removing ports upon removal of blood is drawn to the vessel wall. 由于血液移除口的吸力与血液供给口的进口压力之间的协同相互作用,血液移除口会变成堵塞,从而易于出现差的血液移除。 Due to a synergistic interaction inlet pressure of blood and blood removing ports suction feeding port between the blood removing ports will become clogged, thus prone to poor blood removed.

[0003] 后来,提出了所谓的端孔式三管腔导管,该端孔式三管腔导管具有血液供给管腔和血液移除管腔,该血液供给管腔延伸到血液供给口,该血液供给口在直径逐渐减小的引导端部的引导端开口,所述血液移除管腔延伸到一对血液移除口。 [0003] subsequently proposed a so-called triple lumen catheter end hole, the end of the hole triple lumen catheter lumen having a blood supply and blood removing lumen of the blood feeding lumen extending to the blood supply port, the blood supply port is gradually reduced diameter leading end of the leading end portion of the opening, the blood removing lumen extending to a pair of blood removing ports. 血液移除口设置在比引导端部较向后的每侧上,以沿轴向方向开口,从而与导管的后部连通(例如JP-A-9501 337)。 Blood removing port is provided in the more rearward than the leading end portion of each side, along the axial direction of the opening, thereby communicating with the rear of the catheter (e.g., JP-A-9501 337).

[0004] 然而,在直径逐渐减小的引导端部的引导端处设有血液供给口的导管具有如下的许多问题。 [0004] However, at the end of the guide catheter with the blood feeding port gradually decreasing diameter leading end portion having a number of problems as follows.

[0005] (a)当导管的引导端部的形状构造成尖锐的以便使导管的引导端部易于插入人体时,血液供给口的尺寸必须减小,并且可被供给的血液量继而减小,从而降低了血液供给效率。 [0005] (a) When the shape of the end portion of the guide catheter is configured so that the sharp leading end portion of the catheter body easily inserted, the blood feeding port size must be reduced, and the amount of blood that can be supplied is reduced and then, thereby reducing the blood supply efficiency.

[0006] (b)因为血液从血液供给口以射流形状进入,所以引导端的血液供给口越小,施加到血管上的刺激越大,这并不理想。 [0006] (b) because the blood from the blood supply port to enter the jet shape, so the leading end of the blood feeding port is smaller, the greater the stimulus is applied to the blood vessel, which is not ideal.

[0007] (c)引导端的血液供给口越小,血液供给压力就变得越高,从而使过大的压力施加到连接到导管后部的透析设备上,并且过载被施加到透析设备上。 [0007] (c) the leading end of the blood feeding port is smaller, the pressure on the blood supply becomes higher, so that excessive pressure is applied to the rear of the conduit is connected to the dialysis equipment, and an overload is applied to the dialysis equipment.

[0008] (d)另一方面,当增大引导端的血液供给口时,无法将引导端部做成尖锐的,从而增大了导管的插入阻力。 [0008] (d) On the other hand, when increasing the blood supply port leading end, the leading end portion can not be made sharp, thereby increasing the resistance of the catheter insertion. [0009] (e)由于没有单独用于插入导引线的管腔,必须将血液供给管腔用于插入导引线, 因此使用这种导管较不方便。 [0009] (e) Since no separate lumen for inserting the guide wire must be inserted into the blood feeding lumen for the guide wire, and therefore less convenient to use such a catheter.

[0010] (f)不能注射输液流体(虽然有将输液流体和血液混合在血液供给管腔中以供给到血管中的技术,但混合输液流体和血液很可能形成血块,这并不理想)。 [0010] (f) can not be injected fluid infusion (although the infusion fluid and blood are mixed in the lumen of the blood supply to the blood vessels supplying the technology, but the infusion fluid and the mixing is likely to form blood clots, this is not ideal).

发明内容 DISCLOSURE

[0011] 因此本发明的目的是提供一种导管,该导管具有改进的可达性、大的血液供给口和大的血液移除口,并且保持引导端的较尖锐的构造。 [0011] Accordingly an object of the invention is to provide a catheter having improved accessibility, a large blood supply port and the large blood removing ports, and to maintain the relatively sharp leading end configuration.

[0012] 根据本发明,提供一种三管腔导管,包括: [0012] According to the present invention, there is provided a triple lumen catheter, comprising:

[0013] 具有远端和引导端部的输液管腔,该引导端部的直径向近端逐渐减小,在输液管腔的近端中形成有输液口; [0013] having a distal end and a leading end portion of the infusion lumen, the diameter of the leading end portion gradually decreases toward the proximal end, the infusion ports formed in the proximal end of the infusion lumen;

[0014] 血液供给管腔,该血液供给管腔在引导端部的近端的区域中具有血液供给口,该血液供给口至少部分地沿引导端部的轴向方向开口;以及 [0014] blood feeding lumen, the blood feeding lumen having a blood supply port in the proximal end region of the guide portion of the blood feeding port at least partially along the axial direction of the end portion of the guide opening; and

[0015] 血液移除管腔,该血液移除管腔包括设置在导管的相对两侧壁中的一对血液移除口,血液移除管腔从远端至少延伸到血液移除口。 [0015] blood removing lumen, including the blood removing lumen catheter walls disposed on opposite sides of a pair of blood removing ports, the blood removing lumen extending from a distal end at least to the blood removing ports.

[0016] 因此,对于根据本发明的导管可在引导端中形成开口,可达性很好,并且可以以稳定的方式供给血液,从而不出现差的血液供给。 [0016] Thus, the catheter according to the present invention may be formed in the leading end of the opening up of the well, and can supply the blood in a stable manner, so that poor blood supply does not occur. 另外,由于不增大血液供给压力,因此可减小透析设备上的负载,并且不产生射流,从而不产生对血管的不必要的刺激。 Further, since the pressure does not increase blood supply, thereby reducing the load on the dialysis equipment, and does not produce the jet, so as not to generate unnecessary stimulation of blood vessels.

[0017] 在血液供给管腔与血液移除管腔之间可以设有分隔壁,使得血液移除管腔的横截面面积大于血液供给管腔的横截面面积。 [0017] In the blood feeding lumen between the blood removing lumen may be provided with a partition wall, so that the cross-sectional area of the blood removing lumen is greater than the cross-sectional area of the blood feeding lumen. 凸起部分可以从血液移除管腔的与分隔壁相对的内壁伸出,输液管腔延伸穿过该凸起部分。 The inner wall of the partition wall facing the raised portion can be removed from the blood lumen extends through the infusion lumen extending raised portion. 端部可形成有轴向延伸的狭缝并可形成有大体圆形横截面的凹部,该凹部与狭缝连通并且适于接合在凸起部分周围。 Ends may be formed with axially extending slits and may have a generally circular cross-section is formed recess, the recess communicating with the slit and is adapted to engage around the convex portion.

[0018] 因此,由凸起部分形成的输液管腔形成部分起导管的加强肋的作用,从而难以弯曲或扭曲包括血液移除口的导管,并且即使当血液移除口较大时,也能保持稳定的开口。 [0018] Thus, the convex portion is formed by the infusion lumen of the catheter from the part of the role of reinforcing ribs are formed, making it difficult to bend or twist the catheter comprises a blood removing ports, and even when the blood removing ports is large, it can stable opening. 而且,通过增大血液移除口,可分散负压。 Further, by increasing the blood removing ports, dispersible vacuum. 因此,在移除血液时,导管较少地接近血管壁,并且血管壁不受到导管的刺激,从而可抑制血栓的形成。 Thus, when blood is removed, the catheter is less close to the vessel wall and the vessel wall is not stimulated by the catheter, so as to inhibit the formation of blood clots.

[0019] 血液供给管腔的壁形成部分的预定部分从引导端部后退,从而形成台阶。 [0019] blood feeding lumen wall forming a predetermined portion of the retreat from the leading end portion so as to form a step. 血液供给口的开口面可形成该台阶。 Opening face blood supply port can be formed in the step.

[0020] 因此,用作血液供给口的台阶部分的横截面表面较尖锐,并且可减小插入阻力。 [0020] Thus, the cross-sectional surface is used as a blood supply port of the stepped portion of the relatively sharp, and may reduce the insertion resistance. 因而,易于插入到人体中,并且可插入导管而不切入真皮组织。 Accordingly, easily inserted into the human body, and the catheter can be inserted without cutting the dermis.

[0021] 血液供给口的开口面可沿引导端部的轴向方向向远端倾斜,以便适应引导端部的形状。 [0021] surface of the blood feeding port opening can be guided along the axial direction of the distal end portion is inclined so as to adapt to the shape of the end portion of the guide.

[0022] 由于血液供给口的开口面沿轴向方向向后倾斜以便跟随引导端部的形状,因此可保持尖锐的引导端形状。 [0022] Since the opening face of the blood supply port in the axial direction backward tilt to follow the shape of the end portion of the guide, thus keeping a sharp leading end shape. 因此,可减小插入阻力,容易插入到人体中,并且可插入导管而不切入真皮组织。 Therefore, insertion resistance can be reduced, easily inserted into the human body, and the catheter can be inserted without cutting the dermis.

[0023] 端部的远端可渐缩,以便在血液移除管腔内产生到血液移除口的流动路径。 [0023] The distal end portion can be tapered in order to remove the flow path to generate blood removing lumen port in the blood. 附图说明 Brief Description

[0024] 为了较好地理解本发明并较清楚地示出可如何实现本发明,现在将通过示例参照附图,在附图中: [0024] For a better understanding of the present invention is shown more clearly how the invention may be implemented will now be made by way of example with reference to the accompanying drawings, in which:

[0025] 图1是示出根据本发明的三管腔导管的第一实施例的构造的示意图; [0025] FIG. 1 is a diagram showing a configuration of the first embodiment of the triple lumen catheter of the present invention;

[0026] 图2是沿图1的线AA得到的较大比例的横截面图; [0026] FIG. 2 is a cross-sectional view along the line AA 1 of a greater proportion of FIG obtained;

[0027] 图3是示出图1所示导管的引导端部的较大比例的透视图; [0027] FIG. 3 is a diagram showing a perspective view of a large proportion of the leading end portion of the catheter shown in;

[0028] 图4是示出图1所示导管的引导端部的较大比例的透视图,其中管心针(核心材料)在导管的血液供给管腔内一直插入到血液供给口; [0028] FIG. 4 is a perspective view showing a greater proportion of the leading end portion of the catheter shown in FIG. 1, wherein the stylet (core material) in the blood feeding lumen of the catheter has been inserted into the blood feeding port;

[0029] 图5是图1所示导管的透视图,示出插入到导管主体的引导端以便形成引导端部的一个部件; [0029] FIG. 5 is a perspective view of the catheter shown in FIG. 1, shown inserted into the leading end of the catheter body so as to form an end portion of the guide member;

[0030] 图6是图1所示导管的侧视图,示出引导端形成部件; [0030] FIG. 6 is a side view of the catheter shown in FIG. 1, showing a leading end forming member;

[0031] 图7是沿图6的线BB得到的横截面图; [0031] FIG. 7 is a cross-sectional view along the line BB 6 obtained;

[0032] 图8是示出根据本发明的三管腔导管的第二实施例的构造的示意图; [0032] FIG. 8 is a schematic diagram showing structure of an embodiment of the triple lumen catheter of the present invention, a second;

[0033] 图9是示出导管的引导端部的较大比例的透视图; [0033] FIG. 9 is a perspective view showing a greater proportion of the leading end portion of the catheter;

[0034] 图10是示出引导端部的较大比例的透视图,其中管心针(核心材料)在导管的血液供给管腔内一直插入到血液供给口; [0034] FIG. 10 is a perspective view showing a greater proportion of the guide end portion, wherein the stylet (core material) in the blood feeding lumen of the catheter has been inserted into the blood feeding port;

[0035] 图11是示出引导端形成部件的透视图,该引导端形成部件插入到导管主体的引导端以形成引导端部;以及 [0035] FIG. 11 is a perspective view showing the leading end forming member, the guide member is inserted into the end of the catheter body is formed leading end to form a leading end portion; and

[0036] 图12是示出导管的引导端形成部件的侧视图。 [0036] FIG. 12 is a side view showing the leading end of the catheter forming member. 具体实施方式 DETAILED DESCRIPTION

[0037] 图1至7示出三管腔导管的第一实施例。 [0037] Figure 1-7 show a first embodiment of a triple lumen catheter. 导管包括由诸如聚亚安酯的合成树脂制成的圆筒形导管主体1。 The conduit comprises a cylindrical catheter body made of a synthetic resin such as polyurethane made 1. 主体1形成有三个管腔,血液供给管腔2、血液移除管腔3和输液管腔4,该输液管腔也用作导引线插入管腔。 1 is formed with three body lumen, blood feeding lumen 2, blood transfusion lumen removing lumen 3 and 4, which is also used as an infusion lumen guidewire insertion lumen. 导管的连接部分8设有连接管5和6以及连接管7,连接管5和6由诸如硅树脂或聚亚安酯的柔性合成树脂制成并用于连接到透析回路, 连接管7 —体地联接到导管主体1的基部以用于监测输液或CVP。 Connecting conduit portion 8 is provided with connecting pipes 5 and 6 and the connection pipe 7, and a connecting tube 5 or 6 is made of a flexible synthetic resin such as a silicone resin made of polyurethane and is connected to the dialysis circuit for connecting pipe 7 - Body ground a base coupled to the catheter body 1 to be used to monitor infusion or CVP.

[0038] 更具体地,如图2所示,导管主体1具有分隔壁9,该分隔壁9在图2所示的取向中位于主体1的中心上方的高度处。 [0038] More specifically, as shown in FIG. 2, the catheter body 1 having the partition wall 9, the partition wall 9 is located at a height above the center of the main body 1 in the orientation shown in FIG. 2. 分隔壁9在主体1内形成具有不同横截面面积的两个基本半圆形的管腔。 Partition wall 9 two substantially semicircular lumen having different cross-sectional area is formed in the body 1. 这两个管腔是血液供给管腔2和血液移除管腔3,血液移除管腔3具有比血液供给管腔2大的横截面面积。 These two lumens blood feeding lumen 2 and the blood removing lumen 3, the blood removing lumen 3 having a ratio of the blood feeding lumen 2 large cross-sectional area. 而且,凸起部分11从血液移除管腔3与分隔壁9相对的内壁伸出,以在其中形成圆形横截面的输液管腔4。 Further, the convex portion 11 from the blood removing lumen 3 and the inner wall of the partition wall 9 extends opposite to the circular cross-section formed therein transfusion lumen 4. 输液管腔4的内径与导引线(未示出) 的外径基本相同。 Infusion lumen diameter substantially identical with the guide line 4 (not shown) in outer diameter.

[0039] 如图5至7所示,形成导管主体1的引导端部的部件12 (以下称为引导端形成部件)是圆锥形的,从而使引导端的直径逐渐减小。 Shown in [0039] FIG. 5-7, the catheter body is formed of an end portion of the guide member 12 (hereinafter referred to as the leading end forming member) is conical, so that the diameter of the leading end gradually decreases. 引导端形成部件12包括头部1和尾部12b,该头部1在其自由端处设有与输液管腔4连通的圆形输液口4a,该尾部12b插入导管主体1的血液移除管腔3中。 1 12 includes a head and a tail 12b, which has a circular head 1 infusion port communicates with infusion lumen 4 at its free end 4a, 12b of the tail blood removing lumen catheter body member 1 is formed in the leading end 3. 在头部12a与尾部12b之间形成有台阶部分12c,该台阶部分抵靠并焊接到导管主体1的引导端面。 Between the head 12a and tail 12b is formed with a stepped portion 12c, which abuts against the stepped portion and welded to the end face of the guide catheter body 1. 在头部12a的上表面(如图所示)上形成有平面12d,从而形成分隔壁9的延续。 12a is formed on the surface of the head (as shown) on a flat-12d, thereby forming a continuation of the partition wall 9. 狭缝12f沿尾部12b的下表面从部件12的后部延伸到与台阶部分12c相邻的点,并且圆形凹部12g形成为与狭缝12f连通,从而使形成输液管腔4的凸起段11可被插入圆形凹部12g中。 Slit 12f extends along the lower surface of the tail member 12b from the rear portion 12 to a point adjacent to the stepped portion 12c, and a circular recess 12g is formed communicating with the slit 12f, thereby forming the transfusion lumen 4 of the projection section 11 may be inserted into the circular recess 12g. 当尾段12b被插入血液移除管腔3时,圆形凹部12g绕凸起部分11延伸并与其配合,以使尾部12b叠置在凸起部分11上并桥接到凸起部分11。 When the tail section 12b is inserted into the blood removing lumen 3, the circular recess 12g extending around the convex portion 11 and cooperating therewith to the tail section 12b overlies projection 11 and the bridge to the raised portion 11.

[0040] 另外,在形成导管主体1的壁部13的血液供给管腔中形成有血液供给口2a。 [0040] Further, in forming the wall of the catheter body portion 1 of the blood feeding lumen 13 is formed with a blood supply port 2a. 血液供给口加在主体1的轴向方向上开口,并且与血液供给管腔2连通。 Added to the blood feeding port in the axial direction of the opening of the main body 1, and 2 in communication with the lumen of the blood supply. 血液供给口加的开口表面沿轴向方向向后倾斜(如图所示),以便跟随引导端部12的形状。 Plus the blood feeding port opening surface inclined rearward in the axial direction (as shown), so as to follow the shape of the leading end portion 12. 在导管主体1的形成血液移除管腔的壁部14中形成有位于血液供给口加后方的两个血液移除口3a和3b。 There are blood feeding port located plus two behind the blood removing ports 3a and 3b 14 formed in the formation of blood removing lumen catheter body 1 of the wall. 血液移除口3a和北在导管轴的轴线的相对两侧上,从而相互面对,并且与血液移除管腔3 连通。 Blood removing ports 3a and north on opposite sides of the axis of the catheter shaft, which face each other and communicated with the blood removing lumen 3.

[0041] 在相应的连接管5、6和7的端部中一体地形成有路厄适配器(Iureadapters) 15、 16和17。 [0041] integrally formed with a Luer adapter (Iureadapters) at the end of the corresponding connecting pipe 5, 6 and 7, 15, 16 and 17. 路厄适配器15和16适于在透析时连接到透析系统,其中路厄适配器15连接到连接管5并与血液供给管腔2连通,路厄适配器16连接到连接管6并与血液移除管腔3连通。 Luer adapter 15 and 16 adapted to be connected to the dialysis dialysis system wherein luer adapter 15 is connected to the connection pipe 5 and communicates with the blood feeding lumen 2, luer adapter 16 is connected to the connection pipe 6 and the blood removing pipe chamber 3 connected. 连接管7连接到输液管4。 Connecting tube 7 is connected to the infusion tube 4. 当不使用路厄适配器15、16和17时,封闭的圆盖(未示出) 附装到路厄适配器的开口部分上,从而封闭路厄适配器的开口部分。 When not using the luer adapter 15, 16 and 17, the closed dome (not shown) attached to the opening portion of the luer adapter, so as to close the opening portion of the luer adapter.

[0042] 当导管主体1被插入血管时,从基端的侧面将轴形的管心针(核心材料)18插入血液供给管腔2,如图4所示。 [0042] When the catheter body 1 is inserted into the blood vessel, from the side of the proximal end of the shaft-shaped stylet (core material) 18 is inserted into the blood feeding lumen 2, as shown in FIG. 轴形管心针(核心材料)18延伸到血液供给口加并且由合成树脂材料制成。 Shaft-shaped stylet (core material) 18 extends into the blood supply port plus and is made of synthetic resin material. 管心针18的外径基本等于或稍小于血液供给管腔2的管腔直径。 An outer diameter of 18 stylet substantially equal to or slightly smaller than the diameter of the lumen of the blood feeding lumen 2. 而且, 管心针18的引导端部的形状平滑地形成为曲面形状,以与血液供给口加的横截面形状相配。 Furthermore, the shape of the stylet smooth terrain leading end portion 18 becomes curved shape, with the blood feeding port plus cross-sectional shape to match.

[0043] 而且,各连接管5、6和7都分别设有堵塞相应管腔的夹子21、22和23 (图1),并且至少在从引导端部12到几乎到导管主体1中的血液移除口3a和北的基部的侧面的区域上覆盖有抗血栓润湿和润滑剂(未示出)。 [0043] Further, the connecting pipe 5, 6 and 7 are respectively provided with a corresponding lumen clogging clips 21, 22 and 23 (FIG. 1), and at least from the leading end portion of the catheter body 12 to almost 1 in blood covered with antithrombotic wetting and lubricant (not shown) on the area removing ports 3a and the base of the north side. 而且,整个导管主体1可覆盖有抗血栓润湿和润滑剂。 Moreover, the entire catheter body 1 may be covered with antithrombotic wetting and lubricant.

[0044] 当具有上述构造的本发明的三管腔导管用于进行血液透析时,首先将导引线置于诸如股静脉、颈内静脉或锁骨下静脉的静脉中,该静脉具有大量的血流和大的直径。 [0044] When a three-lumen catheter of the present invention having the above configuration for performing hemodialysis, the guidewire is first placed in the femoral vein, such as, at an internal jugular vein or subclavian vein, the vein having a large number of blood streams and large diameter. 然后, 通过导管主体1的输液口如将位于静脉中的导引线的端部插入,以将其插入输液管腔4 中。 Then, through the catheter body 1 as an infusion port will be located in the vein of an end portion of the guide wire is inserted, to insert it in the transfusion lumen 4. 然后,沿导引线推动导管主体1以将其插入静脉,管心针18最初被插入该导管主体1 并到达血液供给管腔2内的血液供给口2a。 Then, the catheter body along a guide wire to push it into a vein, the stylet 18 is initially inserted into the catheter body 1 and reaches the blood feeding lumen 2 within the blood feeding port 2a. 此时,由于通过管心针18保持了导管主体1的尖锐的引导端的形状,该管心针18的引导端平滑地形成为曲面形状以与血液供给口加的横截面形状相配,因此减小了插入阻力,以便容易插入到人体中。 In this case, the stylet 18 is maintained by a sharp shape leading end of the catheter body 1, the leading end of the stylet 18 is formed into a smooth curved shape to increase the blood supply port to match the cross-sectional shape, thereby reducing insertion resistance, in order to be easily inserted into the human body. 因此,可插入导管而不切入真皮组织。 Thus, the catheter can be inserted without cutting the dermis. 而且,在该实施例中,血液供给口加的开口部分形成为沿轴向方向向后倾斜, 从而跟随引导端部12的形状,如上所述。 Further, in this embodiment, the blood feeding port opening portion is formed to increase the axial direction is inclined rearwardly so as to follow the shape of the leading end portion 12, as described above. 这样,减小了插入阻力,并且容易插入到人体中。 Thus, reducing the insertion resistance, and easily inserted into the human body. 实际上,管心针18并不重要,并且即使当管心针18没有插入血液供给管腔2中时,导管也可以使用。 In fact, the stylet 18 is not important, and even when the stylet 18 is not inserted when the blood supply 2 lumen catheter may also be used. 另外,导管主体1的引导端在使用中沿与待放入导管的静脉的血流相同的方向被导向。 Further, the leading end of the catheter body 1 to be placed along the same direction of blood flow is guided vein catheter in use.

[0045] 接下来,从输液管腔4移除导引线,从血液供给管腔2移除管心针18,并通过夹子23阻塞连接到输液管腔4的连接管7。 [0045] Next, from the infusion guide wire lumen 4 is removed from the blood feeding lumen 2 Remove the stylet 18, and is connected to the transfusion lumen 4 is connected to the tube 7 23 blocked by a clip. 然后,将连接到与血液供给管腔2连通的连接管5 的路厄适配器15连接到透析回路的血液供给侧,并将连接到与血液移除管腔3连通的连接管6的路厄适配器16连接到透析回路的血液移除侧,以开始血液透析。 Then, connect to the blood feeding lumen 2 communicatively connected pipe 5 luer adapter 15 is connected to the blood supply side of the dialysis circuit, and is connected to the connecting pipe 3 communicates with the blood removing lumen luer adapter 6 16 is connected to a hemodialysis circuit removal side, to start hemodialysis.

[0046] 当血液透析开始时,血液从彼此相对并与血液移除管腔3连通的成对的血液移除口3a和北流入血液移除管腔3,以被输送到透析回路。 [0046] When you start dialysis, blood is removed from the lumen relative to each other and communicating with the blood 3 pairs of blood removing ports 3a and north into the blood removing lumen 3, it is delivered to the dialysis circuit. 来自透析回路的净化了的血液从血液供给口加通过血液供给管腔2输送到血管中,该血液供给口加沿轴向方向开口以与血液供给管腔2连通。 Purified blood from the dialysis circuit from the blood through the blood feeding port plus feeding lumen 2 delivered into the bloodstream, the blood feeding port opening in an axial direction to increase the blood feeding lumen 2 communicates.

[0047] 当透析已经完成并且导管主体1保留在血管中时,从透析回路移除连接管5的路厄适配器15和连接管6的路厄适配器16,并且用肝素固定等压氯化钠溶液Q^parin lock isotonic sodium chloridesolution)冲洗血液供给管腔2和血液移除管腔3。 [0047] When the dialysis catheter body 1 has been completed and retained in blood vessels when the circuit connection is removed from the dialysis tube 5 luer adapter 15 and the connecting pipe 6 luer adapter 16, and fixed with heparin and other pressure sodium chloride solution Q ^ parin lock isotonic sodium chloridesolution) washing the blood feeding lumen 2 and the blood removing lumen 3. 而且,将封闭的圆盖(未示出)附装到各路厄适配器15和16的开口部分,以堵塞相应的路厄适配器15和16的开口部分。 Moreover, the closure of the dome (not shown) attached to the luer adapter brightest opening portions 15 and 16, to plug the corresponding luer adapter opening portions 15 and 16.

[0048] 因而,在本发明的三管腔导管中,输液管腔4延伸到输液口4a,该输液口在直径逐渐减小的引导端部12的引导端处开口,并且血液供给管腔延伸到血液供给口2a,该血液供给口在引导端附近沿轴向方向开口,从而在血液透析期间通过沿轴向方向开口的血液供给口加供给血液。 [0048] Thus, in the triple lumen catheter of the present invention, the transfusion lumen 4 extending into the infusion port 4a, the infusion port 12 opening at the leading end of the leading end portion of decreasing diameter, and the blood feeding lumen extending to the blood feeding port 2a, the blood supply port in the vicinity of the leading end of the opening in the axial direction, so that during the hemodialysis through the blood feeding port in the axial direction of the opening plus the blood supply. 因此,引导端部件在其端部处可具有孔,可达性很好,并且可以以稳定的方式供给血液,从而避免差的血液供给。 Thus, the leading end member at its ends may have a hole, up to very good, and can supply the blood in a stable manner, thus avoiding poor blood supply. 另外,由于不增大血液供给压力,因此可减小透析设备上的负载,并且不产生射流,从而避免对血管的不必要的刺激。 Further, since the pressure does not increase blood supply, thereby reducing the load on the dialysis equipment, and does not produce the jet, thus avoiding unnecessary stimulation of blood vessels.

[0049] 另外,分隔壁9布置在血液供给管腔2与血液移除管腔3之间,使得血液移除管腔的横截面面积大于血液供给管腔的横截面面积。 [0049] In addition, the partition wall 9 is disposed between the blood feeding lumen 2 and the blood removing lumen 3, so that the cross-sectional area of the blood removing lumen is greater than the cross-sectional area of the blood feeding lumen. 而且,凸起部分11形成在血液移除管腔3 的与分隔壁相对的内壁的位置中以向分隔壁9的一侧延伸,并且凸起部分11设有输液管腔4。 Further, the convex portion 11 is formed at a position opposing the partition wall and the inner wall of the blood removing lumen 3 to the side of the partition wall 9 extends, and a convex portion 11 is provided with the transfusion lumen 4. 因此,由凸起部分11组成的输液管腔形成部分起导管主体1的加强肋的作用,从而难以弯曲或扭曲包括血液移除口3a和北的导管,并且即使当血液移除口3a和北增大时,也能保持稳定的开口。 Accordingly, the convex portion 11 formed from the infusion lumen of the catheter body portion is formed to strengthen the role of a rib, and thus difficult to bend or twist include blood removing ports 3a and North catheter, and even when the blood removing ports 3a and North When increasing, but also to maintain a stable opening. 而且,通过增大血液移除口3a和北,可分散负压。 Moreover, by increasing the blood removing ports 3a and North dispersible negative. 因此,在移除血液时, 导管主体1较少地接近血管壁的壁,并且血管壁不受到导管的刺激,从而可防止形成血栓。 Thus, when blood is removed, the catheter body 1 is less close to the wall of the vessel wall and the vessel wall is not stimulated by the catheter, thereby preventing the formation of blood clots.

[0050] 另外,由于血液供给口加的开口表面沿轴向方向向后倾斜以便跟随引导端12的形状,所以可保持尖锐的引导端形状。 [0050] Further, since the increase of the blood feeding port opening surface inclined rearward in the axial direction so as to follow the shape of the end 12 of the guide, it is possible to maintain the sharp leading end shape. 因此,可减小插入阻力并且容易插入到人体中,从而可插入导管而不切入真皮组织。 Therefore, insertion resistance can be reduced and easily inserted into the human body, so that the catheter can be inserted without cutting the dermis.

[0051] 通过抗血栓润湿和润滑剂进一步减小了导管插入阻力,从而可实现平滑的插入, 该抗血栓润湿和润滑剂至少覆盖在从引导端部12到几乎到导管主体1中的血液移除口3a 和北的基部的侧面的区域上。 [0051] The antithrombotic wetting and lubricant to further reduce the catheter insertion resistance, which allows for smooth insertion, the antithrombotic wetting and covering at least a lubricant in the leading end portion of the catheter body 12 to almost 1 Regional blood removing ports 3a side and the north of the base. 而且,可防止在血液移除口3a和北中形成血栓,并且可长时间保持导管通畅。 Furthermore, prevent the formation of blood clots in the blood removing ports 3a and North, and can maintain a long catheter patency.

[0052] 图8至12示出三管腔导管的第二实施例。 [0052] Figure 8-12 show a second embodiment of the triple lumen catheter. 在图8至12中,相同的附图标记用于表示与上述第一实施例相同的部件,并且省略了其说明。 In figure 8-12, the same reference numerals are used to denote the above-described first embodiment the same parts, and explanation thereof is omitted.

[0053] 在该实施例的三管腔导管中,将血液供给管腔形成壁部分13的除分隔壁9之外的预定部分从引导端切除(后退)一定距离,以便形成台阶部分,并且血液供给口加的开口表面沿轴向方向向后倾斜,该开口表面是台阶部分的横截面。 [0053] In the triple lumen catheter of this embodiment, the blood feeding lumen is formed in addition to the predetermined portion of the partition wall 9 of the wall portion 13 cut from the leading end (back) at a distance, so as to form a step portion, and the blood plus supply port opening surface is inclined rearward in the axial direction, the opening is a cross-sectional surface of the stepped portion. 而且,当导管主体IA被插入血管时,如图10所示将轴形管心针(核心材料)18A从导管的端部插入血液供给管腔2,该管心针延伸到血液供给口加并且由合成树脂材料制成。 Moreover, when the catheter is inserted into the blood vessel body IA, 10 of the shaft-shaped stylet (core material) 18A is inserted from the end of the catheter lumen of the blood supply 2, the stylet to extend and increase the blood supply port It made of a synthetic resin material.

[0054] 如图11和12所示,形成导管主体IA的引导端部的部件12A(以下称为引导端形成部件)的形状是圆锥形的,以便使引导端的直径逐渐减小。 Shape [0054] Figures 11 and 12, the leading end forming member 12A IA catheter body portion (hereinafter referred to as the leading end forming member) is conical so that the diameter of the leading end gradually decreases. 引导端形成部件12A包括头部1和长尾部12b,该头部1在其自由端处设有与输液管腔4连通的圆形输液口4a,该长尾部12b插入导管主体IA的血液移除管腔3中,从而延伸到血液移除口3a和北。 Leading end forming member 12A includes a head and a long tail 1 12b, which has a circular head 1 infusion port communicates with infusion lumen 4 at its free end 4a, the length of the tail 12b is inserted in the blood removal catheter body IA lumen 3, so as to extend into the blood removing ports 3a and North. 在头部1与尾部12b之间形成有台阶部分12c,该台阶部分抵靠并焊接到导管主体IA的引导端面。 1 between the head and the tail 12b is formed with a stepped portion 12c, the step portion abuts and is welded to the end face of the guide catheter body of IA. 在头部12a的上表面上形成有平面12d,从而形成分隔壁9的延续。 On the upper surface of the head 12a is formed with a flat 12d, thereby forming a continuation of the partition wall 9. 在部件12A与输液口如相反的端部处的流动路径确定部分1形成为渐缩的形状,该部分1的宽度向着部件12A的后方变窄。 In the flow path member 12A and the infusion port at the opposite ends as determined 1 portion formed as a tapered shape, the width 1 portion 12A toward the rear of the narrowing member. 尾部12b的后部区域的两个侧面都渐缩,从而在血液移除口3a和3b内侧形成流动路径。 Two sides of the rear of the tail region 12b are tapered so as to form a flow path in the blood removing ports 3a and 3b the inside. 狭缝12f沿尾部12b的下表面从部件12A的后部延伸到与台阶部分12c相邻的点,并且圆形凹部12g形成为与狭缝12f连通,从而使形成输液管腔4的凸起段11可被插入圆形凹部12g。 Slit 12f extends along the lower surface of the tail member 12b from the rear portion 12A of the stepped portion 12c adjacent to the point, and a circular recess 12g is formed communicating with the slit 12f, thereby forming the transfusion lumen 4 of the projection section 11 may be inserted into the circular recess 12g. 当尾部12b被插入血液移除管腔3时,圆形凹部围绕凸起部分11延伸并与凸起部分11配合,以使尾部12b叠置在凸起部分11上并桥接到凸起部分11。 When the tail 12b is inserted into the blood removing lumen 3, the circular recess extending around the convex portion 11 and the convex portion 11 cooperate to make the tail section 12b overlies projection 11 and the bridge to the raised portion 11.

[0055] 另外,甚至在该实施例中,至少在从引导端部到几乎到导管主体IA中的血液移除口3a和北的基部的侧面的区域上覆盖有抗血栓润湿和润滑剂(未示出)。 [0055] Further, even in this embodiment, at least in the region from the leading end portion of the catheter body almost to the IA blood removing ports 3a and the north side of the base portion is covered with antithrombotic wetting and lubricants ( not shown). 而且,整个导管主体IA可覆盖有抗血栓润湿和润滑剂。 Moreover, the entire catheter body may be covered with antithrombotic IA wetting and lubricant. 除了上述部件以外的部件都与第一实施例相同,并且该实施例具有第一实施例的全部功能。 In addition to the above components and parts are the same as the first embodiment, and this embodiment has all the features of the first embodiment.

[0056] 因此,该实施例的三管腔导管也具有与上述实施例相同的效果。 [0056] Thus, three-lumen catheter of this embodiment also has the same effects as the above-described embodiment. 换言之,引导端形状在其端部处可具有孔,可达性很好,并且可以以稳定的方式供给血液,从而避免差的血液供给。 In other words, the shape of the leading end portion at its end may have a hole, up to very good, and can supply the blood in a stable manner, thus avoiding poor blood supply. 另外,由于不增大血液供给压力,因此可减小透析设备上的负载,并且不产生射流,从而避免对血管的不必要的刺激。 Further, since the pressure does not increase blood supply, thereby reducing the load on the dialysis equipment, and does not produce the jet, thus avoiding unnecessary stimulation of blood vessels.

[0057] 除了由于有形成输液管腔4的凸起部分11而导致加强肋效果之外,到导管主体IA 的血液移除口3a和北的引导端还由引导端形成部件12A的长尾部12b从内侧支承。 [0057] In addition to the transfusion lumen 4 due to the formation of the convex portion 11 caused by the effect of reinforcing ribs outside the catheter body IA blood removing ports 3a and the leading end of the North is also part of the long tail 12A is formed by the leading end 12b supported from the inside. 因此, 包括血液移除口3a和北的整个导管更能抵抗扭曲或弯曲,并且即使当血液移除口3a和北增大时,也可保持稳定的开口。 Therefore, including blood removing ports 3a and the entire catheter North more resistant twisted or bent, and even when the blood removing ports 3a and North increases, but also to maintain a stable opening. 而且,通过增大血液移除口3a和北,可分散负压。 Moreover, by increasing the blood removing ports 3a and North dispersible negative. 因此,在移除血液时,导管主体1较少地接近血管壁,并且血管壁不受到导管的刺激,从而可防止形成血栓。 Thus, when blood is removed, the catheter body 1 is less close to the vessel wall and the vessel wall is not stimulated by the catheter, thereby preventing the formation of blood clots.

[0058] 另外,由于血液供给口加的开口表面沿轴向方向向后倾斜,因此可保持尖锐的引导端形状。 [0058] In addition, because the blood supply port plus open surface tilted back in the axial direction, thus keeping a sharp leading end shape. 因此,可减小插入阻力,并且易于插入到人体中,从而可插入导管而不切入真皮组织。 Therefore, insertion resistance can be reduced, and easily inserted into the human body, so that the catheter can be inserted without cutting the dermis.

[0059] 通过抗血栓润湿和润滑剂进一步减小了导管插入阻力,从而可实现平滑的插入, 所述抗血栓润湿和润滑剂覆盖在至少在从引导端部12到接近导管主体1中靠近血液移除口3a和3b的基部侧面的区域上。 [0059] The antithrombotic and lubricant wetting the catheter insertion resistance is further reduced, enabling a smooth insertion of the antithrombotic wetting and covering at least a lubricant in the leading end portion of the catheter body 12 to near 1 near the regional blood removing ports 3a and 3b of the base side. 而且,可防止血栓形成到血液移除口3a和3b中,并且可长时间保持导管畅通。 And to prevent thrombosis in the blood removing ports 3a and 3b, and long time to keep the catheter open.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
EP0386408A113 Jan 199012 Sep 1990B. Braun Melsungen AGCatheter
US522125610 Feb 199222 Jun 1993Mahurkar Sakharam DMultiple-lumen catheter
US539531611 Aug 19937 Mar 1995Med-Pro Design, Inc.Triple lumen catheter
US545120620 Sep 199419 Sep 1995Quinton Instrument CompanyTriple lumen catheter
Classifications
International ClassificationA61M25/00
Cooperative ClassificationA61M25/0032, A61M25/0026, A61M1/3661, A61M2025/0031
European ClassificationA61M25/00R1M
Legal Events
DateCodeEventDescription
17 Oct 2007C06Publication
12 Dec 2007C10Entry into substantive examination
10 Oct 2008REGReference to a national code
Ref country code: HK
Ref legal event code: DE
Ref document number: 1113660
Country of ref document: HK
3 Aug 2011C14Grant of patent or utility model
24 Apr 2015REGReference to a national code
Ref country code: HK
Ref legal event code: WD
Ref document number: 1113660
Country of ref document: HK
18 Nov 2015EXPYTermination of patent right or utility model