[go: up one dir, main page]

WO2025007322A1 - Tube d'endoprothèse urétérale multifonctionnel à segment vésical sphéroïdal - Google Patents

Tube d'endoprothèse urétérale multifonctionnel à segment vésical sphéroïdal Download PDF

Info

Publication number
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
Authority
WO
WIPO (PCT)
Prior art keywords
segment
bladder
ureteral
ureteral stent
section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2023/105981
Other languages
English (en)
Chinese (zh)
Inventor
钱庆鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to PCT/CN2023/105981 priority Critical patent/WO2025007322A1/fr
Publication of WO2025007322A1 publication Critical patent/WO2025007322A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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

Definitions

  • 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.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

L'invention concerne un dispositif médical, en particulier un tube d'endoprothèse urétérale avec un segment vésical sphéroïdal (3). Le problème technique à résoudre réside dans le fait qu'une endoprothèse urétérale classique à double queue de cochon présente les défauts suivants : elle doit être placée sous vision directe, sa stimulation par rapport à la vessie doit être évidente et elle est dépourvue de structure anti-régurgitation. Le segment vésical (3) du tube d'endoprothèse urétérale est conçu pour avoir une forme sphéroïdale, ce qui permet d'obtenir l'effet d'une tête de limitation, de mettre en place le tube d'endoprothèse urétérale sans surveillance à l'aide d'un endoscope, d'éviter la stimulation de la vessie par une structure tubulaire mince et de prévoir un espace suffisant dans la structure sphéroïdale pour accueillir une valve unidirectionnelle anti-régurgitation (6). Le tube d'endoprothèse urétérale comprend un segment de bassin rénal (1), un segment urétéral (2) et un segment vésical (3), le segment de bassin rénal (1) ayant une forme tubulaire incurvée, le segment urétéral (2) ayant une forme tubulaire droite, et le segment vésical (3) ayant une structure sphéroïdale comprenant une sphère, un sphéroïde aplati, un hémisphère, une forme en forme de cœur, une sphère à noyau concave, etc. ; le segment urétéral (2) est directement relié au segment vésical (3) ; et un trou de drainage peut être ménagé dans une paroi de la structure sphéroïdale du segment vésical (3), et la valve unidirectionnelle anti-régurgitation (6) et d'autres structures peuvent être disposées à l'intérieur du segment vésical (3).
PCT/CN2023/105981 2023-07-05 2023-07-05 Tube d'endoprothèse urétérale multifonctionnel à segment vésical sphéroïdal Pending WO2025007322A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2023/105981 WO2025007322A1 (fr) 2023-07-05 2023-07-05 Tube d'endoprothèse urétérale multifonctionnel à segment vésical sphéroïdal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2023/105981 WO2025007322A1 (fr) 2023-07-05 2023-07-05 Tube d'endoprothèse urétérale multifonctionnel à segment vésical sphéroïdal

Publications (1)

Publication Number Publication Date
WO2025007322A1 true WO2025007322A1 (fr) 2025-01-09

Family

ID=94171004

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/105981 Pending WO2025007322A1 (fr) 2023-07-05 2023-07-05 Tube d'endoprothèse urétérale multifonctionnel à segment vésical sphéroïdal

Country Status (1)

Country Link
WO (1) WO2025007322A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
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 (fr) * 2015-02-19 2016-08-25 Desfemmes François-Noël Ensemble de sonde ureterale et procede d'assemblage sur mesure
US20190083766A1 (en) * 2017-09-21 2019-03-21 Rupesh Desai Ureteral stent with a non-irritating and shock-absorbing bladder anchor
CN213156719U (zh) * 2020-07-07 2021-05-11 广州医科大学附属第一医院（广州呼吸中心） 一种防膀胱刺激内支架管
CN217853490U (zh) * 2022-02-10 2022-11-22 王洪福 一种输尿管支架管

Patent Citations (6)

* Cited by examiner, † Cited by third party
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 (fr) * 2015-02-19 2016-08-25 Desfemmes François-Noël Ensemble de sonde ureterale et procede d'assemblage sur mesure
US20190083766A1 (en) * 2017-09-21 2019-03-21 Rupesh Desai Ureteral stent with a non-irritating and shock-absorbing bladder anchor
CN213156719U (zh) * 2020-07-07 2021-05-11 广州医科大学附属第一医院（广州呼吸中心） 一种防膀胱刺激内支架管
CN217853490U (zh) * 2022-02-10 2022-11-22 王洪福 一种输尿管支架管

Similar Documents

Publication Publication Date Title
CN204246651U (zh) 一种易于置换的输尿管支架管
JP4025648B2 (ja) 尿道内で用いる装置
CN102579171B (zh) 一种输尿管支架装置
CN202537720U (zh) 一种输尿管支架装置
CN112245774A (zh) 一种输尿管支架管套件及其使用方法
CN209451116U (zh) 导尿结构
CN204971724U (zh) 一种输尿管支架管
CN211675844U (zh) 一种双j管
CN107684480B (zh) 一种尿道支架及置入系统
CN201752531U (zh) 单向引流输尿管支架管
CN215024791U (zh) 半硬式输尿管导入鞘
WO2025007322A1 (fr) Tube d'endoprothèse urétérale multifonctionnel à segment vésical sphéroïdal
CN204563248U (zh) 一种输尿管支架管
CN108785825A (zh) 部分快速溶解型抗返流输尿管支架
WO2025107902A1 (fr) Stent urétéral anti-reflux
CN201346250Y (zh) 前尿道支架管
CN111035842A (zh) 随膀胱压力变化而自动调节的抗反流方法及输尿管支架管
WO2023217269A1 (fr) Endoprothèse et son dispositif d'implantation
CN116350869A (zh) 一种防逆流的输尿管支架管及使用方法
CN209611953U (zh) 一种含导丝的导尿管组合
CN221888840U (zh) 一种超滑导尿管结构及超滑导尿管组件
CN209173194U (zh) 尿道扩张器
CN221206278U (zh) 一种防逆流输尿管dj管
CN216571153U (zh) 输尿管扩张支架管
CN205215276U (zh) 镜鞘

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23942636

Country of ref document: EP

Kind code of ref document: A1