WO2025007322A1 - Multifunctional ureteral stent tube with spheroidal bladder segment - Google Patents
Multifunctional ureteral stent tube with spheroidal bladder segment Download PDFInfo
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- WO2025007322A1 WO2025007322A1 PCT/CN2023/105981 CN2023105981W WO2025007322A1 WO 2025007322 A1 WO2025007322 A1 WO 2025007322A1 CN 2023105981 W CN2023105981 W CN 2023105981W WO 2025007322 A1 WO2025007322 A1 WO 2025007322A1
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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
- A61M25/02—Holding devices, e.g. on the body
- A61M25/04—Holding devices, e.g. on the body in the body, e.g. expansible
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- the invention relates to a medical device, in particular to a ureteral stent tube with a spherical bladder section.
- Ureteral stents are medical devices used in kidney and ureteral surgeries. They are placed in the ureter to drain the blood. The upper end of the stent reaches the renal pelvis, and the lower end usually reaches the bladder. Ureteral stents are generally used as non-permanent in-vivo catheters and need to be removed within weeks to months after placement.
- the main ureteral stents currently used are called double pigtail tubes or double J tubes. They are slender tubes made of elastic material with an outer diameter of several millimeters and an effective length of about 24 to 28 centimeters. They can be stretched into a straight tube under external force. Without external force, the materials at the upper and lower ends will curl spontaneously into a spiral or "J" shape.
- the function of the curled sections at both ends is to clamp the upper and lower ends of the ureteral stent in the spacious renal pelvis and bladder, thereby maintaining the position of the ureteral stent and preventing the ureteral stent from slipping out of the ureter.
- ureteral stents There are several disadvantages of ureteral stents in the background technology: 1. When placing this traditional ureteral stent during operation, a guide wire is placed first, and the tube is placed along the guide wire in a straight state. In order to make the two ends of the stent tube in the renal pelvis and bladder, it cannot be placed too deep or too shallow. Therefore, the depth of intubation needs to be adjusted under the monitoring of endoscopes such as cystoscopes or ureteroscopes, which increases the operation steps and has the risk of mistakes such as too deep or too shallow placement. 2.
- the bladder section of the current stent tube contains a curled or straight thin tube. The pressure of this thin tube on the bladder mucosa is relatively large.
- the ureteral stent connects the renal pelvis, ureter, and bladder. During urination, urine in the bladder may flow back into the kidney, increasing the discomfort of renal infection and soreness in the kidney area. Due to the limitation of the condition that the tube diameter is relatively thin, the current ureteral stent is difficult to be practical in actual processing, production and use with an anti-reflux valve set inside. Currently, there is no ureteral stent that can solve the above problems at the same time.
- the present invention provides a new type of ureteral stent tube to solve the shortcomings of the above-mentioned background technology.
- the bladder segment is designed to be spherical, which has one function of acting as a limit head, so that the ureteral stent tube can be placed in place without endoscopic monitoring. Another function is that the bladder segment replaces the traditional tubular structure with a smooth spherical shape, which can avoid the stimulation of the tubular structure to the bladder.
- the interior of the spherical structure can provide enough space to accommodate the anti-reflux valve and other microstructures.
- This ureteral stent tube with a spherical bladder segment is a new medical device invention that can provide surgical convenience and improve medical quality.
- the present invention is a ureteral stent tube with a bladder segment being spherical, comprising a renal pelvis segment, a ureter segment and a bladder segment, wherein the renal pelvis segment is a coiled tubular shape, the ureter segment is a straight tubular shape, the bladder segment is a spherical structure, the ureter segment is directly connected to the bladder segment, and no other pipeline structure is contained between the two segments.
- the spherical structure of the bladder segment can be in the shape of a sphere, an oblate sphere, a hemisphere, a heart shape, a concave core sphere, etc.
- the ureter segment can be opened on the upper wall, the lower wall, the side wall, and the interior of the spherical structure of the bladder segment, wherein the upper wall refers to the side close to the renal pelvis segment, and the lower wall refers to the side away from the renal pelvis segment.
- the opening of the ureter segment on the bladder segment can be a non-expanded direct opening or an expanded funnel-like opening.
- the spherical structure wall of the bladder segment can be provided with a drainage side hole, the interior can be provided with an anti-reflux one-way valve, and the interior can also be provided with a built-in micro-electric machine or electronic device such as a micro-liquid pump and a pressure sensor.
- the transverse diameter of the spherical structure of the bladder segment is greater than the diameter of the ureter and smaller than the diameter of the urethra.
- the spherical structure of the bladder segment can have a traction line or ribbon for pulling the ureteral stent.
- the inherent design pattern of the ureteral stent tube which has a tubular structure in the entire length including the renal pelvis section and the bladder section, has been broken.
- the bladder section of the ureteral stent tube of the present invention is changed into a spherical shape.
- the diameter of this spherical structure can be equal to the diameter of a conventional adult ureter. It can enter the bladder through the urethra but cannot enter the ureter. Therefore, the spherical structure plays the role of a stopper, which can be stuck in the bladder but cannot enter the ureter.
- the bladder built-in part of the present invention eliminates the thin tube exposed in the bladder and is changed into a spherical expansion structure, which can avoid the stimulation of the thin tube on the bladder wall.
- the inner space of the spherical expanded structure of the present invention can accommodate an anti-reflux valve, which can reduce the swelling and pain in the kidney area caused by urine reflux during urination.
- the spherical inner space can accommodate microelectronic devices to play a variety of functions. No other urinary catheter has the same design as the present invention, and the present invention is an innovation with practical application significance.
- Figure 1 is a schematic diagram of the overall appearance of embodiment 1 of the present invention
- Figure 2 is a schematic diagram of a partial cross-section of embodiment 1 of the present invention
- Figure 3 is a schematic diagram of a partial cross-section of embodiment 2 of the present invention
- Figure 4 is a schematic diagram of a partial cross-section of embodiment 3 of the present invention
- Figure 5 is a schematic diagram of a partial cross-section of embodiment 4 of the present invention
- Figure 6 is a schematic diagram of a partial cross-section of embodiment 5 of the present invention
- a ureteral stent tube with a hollow spherical bladder segment includes a renal pelvis segment 1, a ureteral segment 2, and a bladder segment 3, wherein the renal pelvis segment 1 is a coiled tubular structure, the ureteral segment 2 is a straight tubular structure, the bladder segment 3 is a hollow sphere, the opening 4 of the ureteral segment 2 is located on the upper wall of the spherical bladder segment 3, the bladder segment 3 has a drainage side hole 5 on the spherical wall, and the bladder segment 3 has an anti-reflux one-way valve 6 inside the sphere.
- a ureteral stent tube having a hollow spherical bladder segment includes a renal pelvis segment 1, a ureteral segment 2, and a bladder segment 3, wherein the renal pelvis segment 1 is a coiled tubular structure, the ureteral segment 2 is a straight tubular structure, and the bladder segment 3 is a hollow sphere.
- the opening 4 of the ureteral segment 2 is located on the lower wall of the spherical bladder segment 3.
- a ureteral stent tube with an ellipsoidal bladder segment includes a renal pelvis segment 1, a ureteral segment 2, and a bladder segment 3, wherein the renal pelvis segment 1 is a coiled tubular structure, the ureteral segment 2 is a straight tubular structure, and the bladder segment 3 is a solid ellipsoidal spherical structure.
- the funnel-shaped opening 4 of the ureteral segment 2 is located on the side wall of the spherical bladder segment 3.
- a ureteral stent tube having a bladder segment that is a biconcave sphere includes a renal pelvis segment 1, a ureteral segment 2, and a bladder segment 3, wherein the renal pelvis segment 1 is a coiled tubular structure, the ureteral segment 2 is a straight tubular structure, and the bladder segment 3 is a hollow biconcave spherical structure, and the opening 4 of the ureteral segment 2 is located inside the bladder segment 3.
- a ureteral stent tube with a heart-shaped bladder segment includes a renal pelvis segment 1, a ureteral segment 2, and a bladder segment 3, wherein the renal pelvis segment 1 is a coiled tubular structure, the ureteral segment 2 is a straight tubular structure, the bladder segment 3 is heart-shaped, the funnel-shaped opening 4 of the ureteral segment 2 is located at the center of the lower wall of the bladder segment 3, and the tip of the bladder segment 3 has a traction line 7.
- the invention can be manufactured and used using existing production technology, and can have a positive effect on improving medical capabilities and improving the quality of life of patients.
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Abstract
Description
本发明涉及一种医疗器材，具体是一种膀胱段为类球形的输尿管支架管。The invention relates to a medical device, in particular to a ureteral stent tube with a spherical bladder section.
输尿管支架管为肾及输尿管相关手术中使用的医疗器材，放置于输尿管内起引流作用，支架管上端达到肾盂内，支架管下端通常达到膀胱内。输尿管支架管一般作为非永久体内置入导管，需要在置入体内后数周至数月内通过拔除。目前主要使用的输尿管支架管称为双猪尾管或双J管，为弹性材料细长管，外直径数个毫米，有效长度约24至28厘米，在外力可被拉伸为一直管，无外力作用下上下两端材料自发卷曲呈螺旋或“J”状。两端卷曲段的作用是将输尿管支架管上下两端卡位于宽敞的肾盂及膀胱内，从而维持输尿管支架管的位置，避免输尿管支架管滑出输尿管。Ureteral stents are medical devices used in kidney and ureteral surgeries. They are placed in the ureter to drain the blood. The upper end of the stent reaches the renal pelvis, and the lower end usually reaches the bladder. Ureteral stents are generally used as non-permanent in-vivo catheters and need to be removed within weeks to months after placement. The main ureteral stents currently used are called double pigtail tubes or double J tubes. They are slender tubes made of elastic material with an outer diameter of several millimeters and an effective length of about 24 to 28 centimeters. They can be stretched into a straight tube under external force. Without external force, the materials at the upper and lower ends will curl spontaneously into a spiral or "J" shape. The function of the curled sections at both ends is to clamp the upper and lower ends of the ureteral stent in the spacious renal pelvis and bladder, thereby maintaining the position of the ureteral stent and preventing the ureteral stent from slipping out of the ureter.
背景技术中的输尿管支架管存在几个缺点：1、操作中放置这种传统的输尿管支架管时，是先放置导丝，管是伸直状态沿导丝放置的，为使支架管两端段在肾盂及膀胱内，不能放置过深或过浅，因此插管深度需要在膀胱镜或输尿管镜等内窥镜的监视下调整，这样增加操作步骤并有放置过深或过浅的失误风险。2、目前的支架管膀胱段含有卷曲的或直的细管状，这种细管对膀胱粘膜的压力压强相对较大，其压迫或摩擦膀胱壁可引起严重的膀胱刺激症状，因而容易导致尿频尿急等症状。3、输尿管支架管连接肾盂、输尿管、膀胱，排尿时膀胱内尿液可能会返流至肾内，增加肾内感染及肾区酸胀的不适感，由于受管径较细这一条件限制，目前的输尿管支架管在内部设置抗反流阀在实际加工生产及使用中难以实用。目前没有能同时解决以上问题的输尿管支架管。There are several disadvantages of ureteral stents in the background technology: 1. When placing this traditional ureteral stent during operation, a guide wire is placed first, and the tube is placed along the guide wire in a straight state. In order to make the two ends of the stent tube in the renal pelvis and bladder, it cannot be placed too deep or too shallow. Therefore, the depth of intubation needs to be adjusted under the monitoring of endoscopes such as cystoscopes or ureteroscopes, which increases the operation steps and has the risk of mistakes such as too deep or too shallow placement. 2. The bladder section of the current stent tube contains a curled or straight thin tube. The pressure of this thin tube on the bladder mucosa is relatively large. Its compression or friction on the bladder wall can cause serious bladder irritation symptoms, thus easily leading to symptoms such as frequent urination and urgency. 3. The ureteral stent connects the renal pelvis, ureter, and bladder. During urination, urine in the bladder may flow back into the kidney, increasing the discomfort of renal infection and soreness in the kidney area. Due to the limitation of the condition that the tube diameter is relatively thin, the current ureteral stent is difficult to be practical in actual processing, production and use with an anti-reflux valve set inside. Currently, there is no ureteral stent that can solve the above problems at the same time.
本发明提供一种新型输尿管支架管，解决上述背景技术存在的不足，膀胱段设计为类球形，一个作用是起限位头的作用，能够在无内镜监视的情况下将输尿管支架管放置到位。另一个作用是膀胱段用圆滑的类球形替代了传统的细管状结构，可避免细管状结构对膀胱的刺激。类球形结构的内部可以提供足够空间容纳抗反流阀及其他微型结构。此膀胱段为类球形结构的输尿管支架管是一种新的能提供手术便利及提高医疗质量的医疗器材发明。The present invention provides a new type of ureteral stent tube to solve the shortcomings of the above-mentioned background technology. The bladder segment is designed to be spherical, which has one function of acting as a limit head, so that the ureteral stent tube can be placed in place without endoscopic monitoring. Another function is that the bladder segment replaces the traditional tubular structure with a smooth spherical shape, which can avoid the stimulation of the tubular structure to the bladder. The interior of the spherical structure can provide enough space to accommodate the anti-reflux valve and other microstructures. This ureteral stent tube with a spherical bladder segment is a new medical device invention that can provide surgical convenience and improve medical quality.
本发明是一种膀胱段为类球形的输尿管支架管，包括肾盂段、输尿管段和膀胱段，其中肾盂段为盘曲管状，输尿管段为直管状，膀胱段为类球形结构，输尿管段与膀胱段直接衔接，两段之间不含有其他管道结构。膀胱段的类球形结构可以为圆球、扁球、半球、心形、凹芯球等形状。输尿管段可以开口于膀胱段的类球形结构的上壁，下壁，侧壁，内部，其中上壁指靠近肾盂段的一侧，下壁指远离肾盂段的一侧。输尿管段在膀胱段上的开口可以为非扩张直接开口或扩张的漏斗样开口。膀胱段的类球形结构壁上可带有引流侧孔，内部可以带有抗反流单向阀，内部也可以内置微型电动机械或电子装置如微型液体泵、压力传感器。膀胱段的类球形结构的横向直径大于输尿管直径并且小于尿道的直径。膀胱段的类球形结构上可以有牵引线或丝带，用于拖拽输尿管支架管。The present invention is a ureteral stent tube with a bladder segment being spherical, comprising a renal pelvis segment, a ureter segment and a bladder segment, wherein the renal pelvis segment is a coiled tubular shape, the ureter segment is a straight tubular shape, the bladder segment is a spherical structure, the ureter segment is directly connected to the bladder segment, and no other pipeline structure is contained between the two segments. The spherical structure of the bladder segment can be in the shape of a sphere, an oblate sphere, a hemisphere, a heart shape, a concave core sphere, etc. The ureter segment can be opened on the upper wall, the lower wall, the side wall, and the interior of the spherical structure of the bladder segment, wherein the upper wall refers to the side close to the renal pelvis segment, and the lower wall refers to the side away from the renal pelvis segment. The opening of the ureter segment on the bladder segment can be a non-expanded direct opening or an expanded funnel-like opening. The spherical structure wall of the bladder segment can be provided with a drainage side hole, the interior can be provided with an anti-reflux one-way valve, and the interior can also be provided with a built-in micro-electric machine or electronic device such as a micro-liquid pump and a pressure sensor. The transverse diameter of the spherical structure of the bladder segment is greater than the diameter of the ureter and smaller than the diameter of the urethra. The spherical structure of the bladder segment can have a traction line or ribbon for pulling the ureteral stent.
突破了输尿管支架管的全长包括肾盂段及膀胱段均含有细管状结构的固有设计模式，本发明输尿管支架管膀胱段改变为类球形，这种类球形结构的直径可以等同成人常规尿管直径，既可以通过尿道进入膀胱，又无法进入输尿管，因此类球形结构起到限位头的作用，可以卡位于膀胱内但无法进入输尿管，放置输尿管支架管时可以在不用监视的情况下直接沿导丝放置，在膀胱输尿管交界处遇到阻力即表明类球形限位头到达输尿管开口位置，靠输尿管支架管肾盂段的弹性自卷曲特点维持类球形限位头保持在输尿管开口位置，这种设计能够免除内镜下监视操作。同时，本发明的膀胱内置部分取消了暴露于膀胱内的细管，改变为类球形的膨大结构，可避免细管对膀胱壁的刺激。本发明类球形的膨大结构的内部空间能够容纳安置抗反流阀，可减少排尿时因尿液反流引起的肾区胀痛，此外类球形内部空间可以容纳微型电子装置发挥多种功能。尚无其他尿管具有与本发明同样的设计，本发明是有实际应用意义的创新。The inherent design pattern of the ureteral stent tube, which has a tubular structure in the entire length including the renal pelvis section and the bladder section, has been broken. The bladder section of the ureteral stent tube of the present invention is changed into a spherical shape. The diameter of this spherical structure can be equal to the diameter of a conventional adult ureter. It can enter the bladder through the urethra but cannot enter the ureter. Therefore, the spherical structure plays the role of a stopper, which can be stuck in the bladder but cannot enter the ureter. When placing the ureteral stent tube, it can be placed directly along the guide wire without monitoring. When encountering resistance at the junction of the bladder and ureter, it indicates that the spherical stopper head has reached the ureteral opening position. The elastic self-curling characteristics of the renal pelvis section of the ureteral stent tube maintain the spherical stopper head at the ureteral opening position. This design can avoid endoscopic monitoring operations. At the same time, the bladder built-in part of the present invention eliminates the thin tube exposed in the bladder and is changed into a spherical expansion structure, which can avoid the stimulation of the thin tube on the bladder wall. The inner space of the spherical expanded structure of the present invention can accommodate an anti-reflux valve, which can reduce the swelling and pain in the kidney area caused by urine reflux during urination. In addition, the spherical inner space can accommodate microelectronic devices to play a variety of functions. No other urinary catheter has the same design as the present invention, and the present invention is an innovation with practical application significance.
图1是本发明实施例1的整体外观示意图；图2是本发明实施例1的局部剖面示意图；图3是本发明实施例2的局部剖面示意图；图4是本发明实施例3的局部剖面示意图；图5是本发明实施例4的局部剖面示意图；图6是本发明实施例5的局部剖面示意图；图中的标号说明：1.肾盂段，2.输尿管段，3.膀胱段，4.开口，5.侧孔，6. 抗反流单向阀，7.牵引线。Figure 1 is a schematic diagram of the overall appearance of embodiment 1 of the present invention; Figure 2 is a schematic diagram of a partial cross-section of embodiment 1 of the present invention; Figure 3 is a schematic diagram of a partial cross-section of embodiment 2 of the present invention; Figure 4 is a schematic diagram of a partial cross-section of embodiment 3 of the present invention; Figure 5 is a schematic diagram of a partial cross-section of embodiment 4 of the present invention; Figure 6 is a schematic diagram of a partial cross-section of embodiment 5 of the present invention; Explanation of the numbers in the figures: 1. Renal pelvis segment, 2. Ureter segment, 3. Bladder segment, 4. Opening, 5. Side hole, 6. Anti-reflux one-way valve, 7. Traction line.
实施例1：如图1、图2所示，一种膀胱段为空心球形的输尿管支架管，包括肾盂段1，输尿管段2，膀胱段3，其中肾盂段1为盘曲管状结构，输尿管段2为直管状，膀胱段3为空心圆球，输尿管段2的开口4位于球形膀胱段3的上壁，膀胱段3的圆球壁上有引流侧孔5，膀胱段3的圆球内部有抗反流单向阀6。Embodiment 1: As shown in Figures 1 and 2, a ureteral stent tube with a hollow spherical bladder segment includes a renal pelvis segment 1, a ureteral segment 2, and a bladder segment 3, wherein the renal pelvis segment 1 is a coiled tubular structure, the ureteral segment 2 is a straight tubular structure, the bladder segment 3 is a hollow sphere, the opening 4 of the ureteral segment 2 is located on the upper wall of the spherical bladder segment 3, the bladder segment 3 has a drainage side hole 5 on the spherical wall, and the bladder segment 3 has an anti-reflux one-way valve 6 inside the sphere.
实施例2：如图3所示，一种膀胱段为空心球形的输尿管支架管，包括肾盂段1，输尿管段2，膀胱段3，其中肾盂段1为盘曲管状结构，输尿管段2为直管状，膀胱段3为空心圆球，输尿管段2的开口4位于球形膀胱段3的下壁。Embodiment 2: As shown in FIG3 , a ureteral stent tube having a hollow spherical bladder segment includes a renal pelvis segment 1, a ureteral segment 2, and a bladder segment 3, wherein the renal pelvis segment 1 is a coiled tubular structure, the ureteral segment 2 is a straight tubular structure, and the bladder segment 3 is a hollow sphere. The opening 4 of the ureteral segment 2 is located on the lower wall of the spherical bladder segment 3.
实施例3：如图4所示， 一种膀胱段为椭球形的输尿管支架管，包括肾盂段1，输尿管段2，膀胱段3，其中肾盂段1为盘曲管状结构，输尿管段2为直管状，膀胱段3为实心椭圆球结构，输尿管段2的漏斗样开口4位于球形膀胱段3的侧壁。Embodiment 3: As shown in FIG. 4 , a ureteral stent tube with an ellipsoidal bladder segment includes a renal pelvis segment 1, a ureteral segment 2, and a bladder segment 3, wherein the renal pelvis segment 1 is a coiled tubular structure, the ureteral segment 2 is a straight tubular structure, and the bladder segment 3 is a solid ellipsoidal spherical structure. The funnel-shaped opening 4 of the ureteral segment 2 is located on the side wall of the spherical bladder segment 3.
实施例4：如图5所示，一种膀胱段为双面凹球形的输尿管支架管，包括肾盂段1，输尿管段2，膀胱段3，其中肾盂段1为盘曲管状结构，输尿管段2为直管状，膀胱段3为空心双面凹球形结构，输尿管段2的开口4位于膀胱段3的内部。Embodiment 4: As shown in FIG5 , a ureteral stent tube having a bladder segment that is a biconcave sphere includes a renal pelvis segment 1, a ureteral segment 2, and a bladder segment 3, wherein the renal pelvis segment 1 is a coiled tubular structure, the ureteral segment 2 is a straight tubular structure, and the bladder segment 3 is a hollow biconcave spherical structure, and the opening 4 of the ureteral segment 2 is located inside the bladder segment 3.
实施例5：如图6所示，一种膀胱段为心形的输尿管支架管，包括肾盂段1，输尿管段2，膀胱段3，其中肾盂段1为盘曲管状结构，输尿管段2为直管状，膀胱段3为心形，输尿管段2的漏斗样开口4位于膀胱段3的下壁中央，膀胱段3的尖端有牵引线7。Embodiment 5: As shown in FIG6 , a ureteral stent tube with a heart-shaped bladder segment includes a renal pelvis segment 1, a ureteral segment 2, and a bladder segment 3, wherein the renal pelvis segment 1 is a coiled tubular structure, the ureteral segment 2 is a straight tubular structure, the bladder segment 3 is heart-shaped, the funnel-shaped opening 4 of the ureteral segment 2 is located at the center of the lower wall of the bladder segment 3, and the tip of the bladder segment 3 has a traction line 7.
该发明能够利用现有生产技术制造及使用，对提高医疗能力及提高患者生活质量能够产生积极效果。The invention can be manufactured and used using existing production technology, and can have a positive effect on improving medical capabilities and improving the quality of life of patients.
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| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2023/105981 WO2025007322A1 (en) | 2023-07-05 | 2023-07-05 | Multifunctional ureteral stent tube with spheroidal bladder segment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2023/105981 WO2025007322A1 (en) | 2023-07-05 | 2023-07-05 | Multifunctional ureteral stent tube with spheroidal bladder segment |
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| Publication Number | Publication Date |
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| WO2025007322A1 true WO2025007322A1 (en) | 2025-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2023/105981 Pending WO2025007322A1 (en) | 2023-07-05 | 2023-07-05 | Multifunctional ureteral stent tube with spheroidal bladder segment |
Country Status (1)
| Country | Link |
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| WO (1) | WO2025007322A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4553959A (en) * | 1982-01-27 | 1985-11-19 | The Victoria University Of Manchester | Urethral catheter |
| US20030195456A1 (en) * | 2002-04-16 | 2003-10-16 | Robertson David W. | Ureteral stent with end-effector and related methods |
| WO2016131938A1 (en) * | 2015-02-19 | 2016-08-25 | Desfemmes François-Noël | Urethral probe assembly and method for customised assembly |
| US20190083766A1 (en) * | 2017-09-21 | 2019-03-21 | Rupesh Desai | Ureteral stent with a non-irritating and shock-absorbing bladder anchor |
| CN213156719U (en) * | 2020-07-07 | 2021-05-11 | 广州医科大学附属第一医院（广州呼吸中心） | An inner stent tube for preventing bladder irritation |
| CN217853490U (en) * | 2022-02-10 | 2022-11-22 | 王洪福 | Ureteral stent |
-
2023
- 2023-07-05 WO PCT/CN2023/105981 patent/WO2025007322A1/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4553959A (en) * | 1982-01-27 | 1985-11-19 | The Victoria University Of Manchester | Urethral catheter |
| US20030195456A1 (en) * | 2002-04-16 | 2003-10-16 | Robertson David W. | Ureteral stent with end-effector and related methods |
| WO2016131938A1 (en) * | 2015-02-19 | 2016-08-25 | Desfemmes François-Noël | Urethral probe assembly and method for customised assembly |
| US20190083766A1 (en) * | 2017-09-21 | 2019-03-21 | Rupesh Desai | Ureteral stent with a non-irritating and shock-absorbing bladder anchor |
| CN213156719U (en) * | 2020-07-07 | 2021-05-11 | 广州医科大学附属第一医院（广州呼吸中心） | An inner stent tube for preventing bladder irritation |
| CN217853490U (en) * | 2022-02-10 | 2022-11-22 | 王洪福 | Ureteral stent |
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