CN101785901A - Anti-reflux support tube of ureter - Google Patents

Anti-reflux support tube of ureter Download PDF

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Publication number
CN101785901A
CN101785901A CN 201010106658 CN201010106658A CN101785901A CN 101785901 A CN101785901 A CN 101785901A CN 201010106658 CN201010106658 CN 201010106658 CN 201010106658 A CN201010106658 A CN 201010106658A CN 101785901 A CN101785901 A CN 101785901A
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CN
China
Prior art keywords
valve
anti
reflux
ureteral stent
urine
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CN 201010106658
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Chinese (zh)
Inventor
周远秀
李为兵
沈文浩
鄢俊安
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中国人民解放军第三军医大学第一附属医院
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Priority to CN 201010106658 priority Critical patent/CN101785901A/en
Publication of CN101785901A publication Critical patent/CN101785901A/en

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Abstract

The invention discloses an anti-reflux support tube of a ureter. The anti-reflux support tube of the ureter comprises a tube body, wherein an elastic valve is arranged in the tube body to form a one-way flow valve structure; through the arrangement of the elastic valve in the tube body, when urine flows downstream, the elastic valve is opened; and when urine flows back, the elastic valve is closed so as to form the one-way flow valve structure. The anti-reflux support tube of the ureter has the advantages of no influence on drainage, good anti-reflux effect, simple structure and easy use.

Description

抗返流输尿管支架管 Anti-reflux ureteral stent

技术领域 FIELD

[0001] 本发明涉及一种医疗器械,特别涉及一种抗返流输尿管支架管。 [0001] The present invention relates to a medical instrument, particularly to an anti-reflux ureteral stent.

背景技术 Background technique

[0002] 输尿管支架管是为引流尿液及防治输尿管狭窄等,而留置于输尿管内的导管,一般用于肾结石、输尿管结石、肾移植、肾积水、肾和输尿管肿瘤手术、输尿管狭窄手术。 [0002] ureteral stent for urine drainage and prevention of ureteral stenosis, the indwelling catheter within the ureter, generally used for kidney stones, ureteral stones, kidney transplantation, hydronephrosis, kidney and ureter tumors, ureteral stricture surgery . 输尿管支架管一般采用聚氨酯等材料制成,留置时特别软,可以减少对输尿管和膀胱的剌激,留置时间长,最长可达12个月。 Ureteral stent commonly used polyurethane or the like material, especially soft indwelling, can reduce stimulation of the ureter and bladder, the retention time is long, up to 12 months. 因此,输尿管支架管在治疗泌尿系统的疾病时有广泛的应用。 Thus, ureteral stent is widely used at the treatment of diseases of the urinary system. 但是,因为目前所运用的支架管,是双向引流作用的,所以在实际临床上,普遍存在尿液返流的情况,比如当膀胱压力增高的时候,尿液可以沿输尿管支架管引流到肾脏,从而引发上尿路感染和肾积水等病变,导致肾功能损害。 However, because the current by the use of stents, is a two-way drainage function, so in actual clinical situation prevailing urine reflux, such as when the bladder pressure increased, the urine can along the ureteral stent drainage to the kidneys, causing a urinary tract infection and hydronephrosis and other diseases, leading to impaired renal function.

[0003] 如果可以为输尿管支架管设计一种类似单向阀的结构,在不需外压或仅需很小的压力就可以使尿液从肾盂引向膀胱,而即使在较大的压力下,也不能由膀胱引入肾盂,从而使输尿管只起单向引流作用,减少发生感染的风险。 [0003] If a configuration similar to the check valve for the ureteral stent design, the need of external pressure or little pressure only can make the urine from the renal pelvis towards the bladder, and even in larger pressure nor the introduction of the renal pelvis from the bladder, so that the ureter only play one-way drainage, reducing the risk of infection. 同时,装置的结构还应适于长期留置于患者体内,不增加患者痛苦。 Meanwhile, the structure of the apparatus should be adapted to long-term indwelling in the patient, without increasing the suffering of patients.

[0004] 因此,需要一种输尿管支架管,仅起单向引流作用,在不影响其正常的引流作用时,可以有效地防止尿液从膀胱返流。 [0004] Accordingly, a need for a ureteral stent, only play the one-way draining effect, when not affect the normal drainage effect, can effectively prevent urine from the bladder reflux.

发明内容 SUMMARY

[0005] 有鉴于此,本发明提供一种抗返流输尿管支架管,仅起单向引流作用,在不影响其正常的引流作用时,可以有效地防止尿液从膀胱返流。 [0005] Accordingly, the present invention provides a stent an anti-reflux ureter, only play the one-way draining effect, when not affect the normal drainage effect, can effectively prevent urine from the bladder reflux.

[0006] 本发明的抗返流输尿管支架管,包括管体,所述管体内设置弹性瓣膜形成单向流通阀结构。 Anti-reflux ureteral stent [0006] the present invention, comprises a tube body, the tube body is provided an elastic valve to form a unidirectional flow valve structure.

[0007] 进一步,所述弹性瓣膜包括一对相对设置的瓣膜片,瓣膜片有一固定端与管体内壁固定连接,有一活动端相对于固定端弯曲呈拱形,拱形底部朝向尿液流动的方向,两瓣膜片活动端之间的径向间隙形成尿液通道; [0007] Further, the elastomeric valve comprises a pair of valve plate disposed opposite the valve plate has a fixed end of the tubular body wall is fixedly connected with a movable end to the fixed end of the curved arcuate shape, the flow of urine arcuate toward the bottom of direction, the radial gap between the two diaphragm moves end forming urine passageway;

[0008] 进一步,所述瓣膜片的厚度由活动端向固定端逐渐增大; [0008] Further, the valve plate thickness is gradually increased by the movable end to the fixed end;

[0009] 进一步,所述瓣膜片内嵌设置金属丝网骨架,所述金属丝网骨架由记忆合金制成; [0009] Further, the valve plate embedded in a metal mesh skeleton, said metal wire reinforced by a memory alloy;

[0010] 进一步,所述尿液通道的宽度为管体直径的1/3-1/2 ; [0011] 进一步,沿管体轴向设置有至少两个弹性瓣膜。 [0010] Further, the urine channel width of a tube diameter of 1 / 3-1 / 2; [0011] Further, in the tube axial direction is provided with at least two resilient valve.

[0012] 本发明的有益效果:通过在管体内设置弹性瓣膜,在尿液顺流时弹性瓣膜张开, 当尿液返流时弹性瓣膜关闭,形成单向流通阀结构,既不影响引流,又具有很好的抗返流效果,而且结构简单,易于使用。 [0012] Advantageous effects of the invention: by providing an elastic valve in the tubular body, when the urine downstream elastic valve open, when the urine reflux elastic valve closed, to form a unidirectional flow valve structure will not affect the drainage, but also has good anti-reflux effect, the structure is simple and easy to use. 附图说明 BRIEF DESCRIPTION

[0013] 下面结合附图和具体实施例对本发明作进一步描述。 [0013] Next, in conjunction with the accompanying drawings and specific embodiments of the present invention will be further described. [0014] 图1为本发明的结构示意图; [0015] 图2为逆流时本发明的结构示意图; [0016] 图3为图1的AA向剖视图; [0017] 图4为图2的BB向剖视图。 [0014] Fig 1 a schematic structural diagram of the present invention; [0015] FIG. 2 is a structural diagram of the present invention, counterflow time; [0016] FIG. 3 is a AA in FIG. 1 to the cross-sectional view; [0017] FIG. 4 is a FIG. 2 BB to sectional view.

具体实施方式 Detailed ways

[0018] 图1为本发明的结构示意图,图2为逆流时本发明的结构示意图,图3为图1的AA向剖视图,图4为图2的BB向剖视图;如图所示:图中自上而下为尿液顺流的方向,本实施例的抗返流输尿管支架管,包括管体1 ,管体是由常见的聚氨酯等材料制成的单猪尾连同肾造瘘管或双猪尾输尿管支架管,管体1内设置弹性瓣膜形成单向流通阀结构,弹性瓣膜应尽量靠近连通膀胱一端以提高使用效果,弹性瓣膜由弹性好的弹性基体制成,弹性基 Schematic structural diagram of [0018] FIG. 1 of the present invention, FIG. 2 is a structural diagram of the present invention countercurrent, FIG. 3 is a AA in FIG. 1 the cross sectional view, FIG. 4 is a BB in FIG. 2 to the cross-sectional view; shown: FIG. anti-reflux ureteral stents top to bottom direction of the urine cocurrent, the present embodiment comprises a tubular body 1, a single pigtail body is made of common polyurethane materials such as together with nephrostomy or double pigtail ureteral stent, the tubular body is provided an elastic valve 1 to form a unidirectional flow valve structure, the elastic valve should close communication with the bladder end to enhance the use, the elastic valve elastomeric matrix made into a good flexibility, elasticity group

体可以由聚四氟乙烯、聚氨酯、医用硅胶等材料制成,弹性好,成型效果好,当尿液自肾盂向 May be made of polytetrafluoroethylene, polyurethane, medical silicone and other materials, good elasticity, forming effect, when urine from the pelvis to the

膀胱顺流时,弹性瓣膜保持开启状态,当尿液自膀胱向肾盂逆流时,弹性瓣膜关闭。 When the bladder is forward, the elastic valve is kept open, when the urine from the bladder countercurrent to the pelvis, the elastic valve closed.

[0019] 本实施例中,所述弹性瓣膜包括一对相对设置的瓣膜片2,瓣膜片的轮廓线与管体 [0019] In this embodiment, the elastomeric valve comprises a pair of valve plate disposed opposite 2, the contour line of the valve sheet and tube

内圆表面配合,瓣膜片2有一固定端21与管体内壁固定连接,有一活动端22相对于固定端 Circular inner surface fitting, the valve plate 2 has a fixed end 21 fixedly connected to the tubular body wall has a movable end 22 with respect to the fixed end

21弯曲呈拱形并沿管体轴向延伸,使瓣膜片的纵截面为拱形,拱形底部朝向尿液流动的方 21 curved arched and extends in the tube axial direction, so that a longitudinal section of the valve piece toward the flow of urine arcuate bottom arcuate side

向,两瓣膜片活动端22之间的径向间隙形成尿液通道3,当尿液顺流时,拱形瓣膜片的上表 To, two diaphragm movable end between 22 radial gap formed urine passage 3, when the urine downstream, the table arcuate valve sheet

面受力,尿液顺尿液通道通过弹性瓣膜,当流量较大时,流体压力可将瓣膜片的活动端推向 Surface force, urine along the urine passageway by an elastic valve, when the flow rate is large, the fluid pressure may be active end of the valve sheet into

管体侧壁增大活动端之间的径向间隙,便于使尿液向膀胱流动;当尿液逆流时,拱形瓣膜片 Tubular side wall increasing the radial clearance between the movable ends, facilitates urine to the bladder flows; when the urine backflow, arcuate valve plate

的下表面受力,推动两瓣膜片的活动端靠向管体轴线并贴合在一起,将管体内的通道封闭, The lower surface of the force, pushing two membrane active end toward the tube axis and bonded together, the tube body passage is closed,

阻止尿液逆流,形成单向流通阀的结构。 Preventing urine backflow, a structure-way flow valve.

[0020] 本实施例中,所述瓣膜片2的厚度由活动端22向固定端21逐渐增大,增强固定端的支撑强度,同时使活动端易于弯曲。 [0020] In this embodiment, the thickness of the valve plate 2 by the movable terminal 22 is gradually increased toward the fixed end 21, enhancing the supporting strength of the fixing end, while the movable end easily bent.

[0021] 本实施例中,所述瓣膜片2内嵌设置金属丝网骨架4,所述金属丝网骨架4由记忆合金制成,金属丝网骨架沿瓣膜片轮廓布置围成边框,并自固定端到活动端设置与拱形弯曲度相同的加强筋,形成网状结构,可以更好的支撑瓣膜片并提高定型作用,便于瓣膜快速恢复原状。 [0021] In this embodiment, the valve plate 2 embedded in a metal mesh bobbin 4, the metal mesh skeleton 4 is made of a memory alloy metal wire reinforced along the valve plate contour is arranged surrounded by borders, and from the fixed end to the movable end is provided with an arcuate curvature of the same rib, forms a network structure, can better support the valve plate and to improve styling benefits, ease of valve rapid restitution.

[0022] 本实施例中,所述尿液通道3的宽度为管体直径的1/3-1/2,使弹性瓣膜在常态下保持打开的状态,不影响输尿管的正常引流,返流时可迅速闭合,且不易被尿液冲开。 [0022] In this embodiment, the urine channel width 3 of a tube diameter of 1 / 3-1 / 2, the resilient valve remains open state in a normal state without affecting normal drainage of the ureter, when regurgitation It can be quickly closed, and not susceptible to urine red open. [0023] 本实施例中,沿管体1轴向设置有至少两个弹性瓣膜,优选为两个,设置多个弹性瓣膜可防止弹性瓣膜失效,起多重保险作用。 [0023] In this embodiment, along the tube 1 axially is provided with at least two elastic valve, preferably two, a plurality of resilient valve prevents the elastic valve failure, since multiple role as insurance.

[0024] 最后说明的是,以上实施例仅用以说明本发明的技术方案而非限制,尽管参照较佳实施例对本发明进行了详细说明,本领域的普通技术人员应当理解,可以对本发明的技术方案进行修改或者等同替换,而不脱离本发明技术方案的宗旨和范围,其均应涵盖在本发明的权利要求范围当中。 [0024] Finally is noted that, the above embodiments are intended to illustrate the present invention and not limitation, although the present invention has been described in detail with reference to preferred embodiments, those of ordinary skill in the art should be understood that the present invention technical solution modifications or equivalent replacements without departing from the spirit and scope of the technical solutions of the present invention, which should fall among the claims of the present invention the required range.

Claims (6)

  1. 一种抗返流输尿管支架管,包括管体(1),其特征在于:所述管体(1)内设置弹性瓣膜形成单向流通阀结构。 An anti-reflux ureteral stent, comprising a tubular body (1), characterized in that: an elastic valve to form a unidirectional flow valve arrangement (1) within said tubular body.
  2. 2. 根据权利要求1所述的抗返流输尿管支架管,其特征在于:所述弹性瓣膜包括一对以可闭合的方式相对设置的瓣膜片(2),瓣膜片(2)有一固定端(21)与管体内壁固定连接,有一活动端(22)相对于固定端(21)弯曲呈拱形,拱形底部朝向尿液流动的方向,两瓣膜片活动端(22)之间的径向间隙形成尿液通道(3)。 The anti-reflux ureteral stent according to claim 1, wherein: said elastomeric valve comprises a pair of valve plate (2) in a closable manner oppositely disposed valve plate (2) has a fixed end ( 21) and the tubular body wall is fixedly connected radially between the fixed end (21) bent at an arcuate direction toward the flow of urine bottom arcuate, two diaphragms movable end (22) with respect to a movable end (22) gap forming urine channel (3).
  3. 3. 根据权利要求2所述的抗返流输尿管支架管,其特征在于:所述瓣膜片(2)的厚度由活动端(22)向固定端(21)逐渐增大。 As claimed in claim 2 antireflux ureteral stent, which is characterized in that: the valve plate (2) has a thickness (21) is gradually increased by the active end (22) toward the fixed end.
  4. 4. 根据权利要求3所述的抗返流输尿管支架管,其特征在于:所述瓣膜片(2)内嵌设置金属丝网骨架(4),所述金属丝网骨架(4)由记忆合金制成。 According to claim 3 antireflux ureteral stent, which is characterized in that: the valve plate (2) embedded in a metal wire reinforced (4), the metal wire reinforced (4) by a memory alloy production.
  5. 5. 根据权利要求4所述的抗返流输尿管支架管,其特征在于:所述尿液通道(3)的宽度为管体直径的1/3-1/2。 As claimed in claim 4 antireflux ureteral stent, which is characterized in that: the width of the urine channel (3) is a tube diameter of 1 / 3-1 / 2.
  6. 6. 根据权利要求5所述的抗返流输尿管支架管,其特征在于:沿管体(1)轴向设置有至少两个弹性瓣膜。 According to claim 5, wherein the anti-reflux ureteral stent, which is characterized in that: in the tubular body (1) axially provided with at least two resilient valve.
CN 201010106658 2010-02-05 2010-02-05 Anti-reflux support tube of ureter CN101785901A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103908265A (en) * 2013-01-08 2014-07-09 韦伯斯特生物官能(以色列)有限公司 Catheter sheath introducer with directional retention damper
CN104667416A (en) * 2015-03-31 2015-06-03 王兆华 Catheter drainage tube

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103908265A (en) * 2013-01-08 2014-07-09 韦伯斯特生物官能(以色列)有限公司 Catheter sheath introducer with directional retention damper
US10039898B2 (en) 2013-01-08 2018-08-07 Biosense Webster (Israel) Ltd. Catheter sheath introducer with directional retention damper
CN104667416A (en) * 2015-03-31 2015-06-03 王兆华 Catheter drainage tube

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