Water-lubricity composite balloon ureteral dilator

Abstract

The utility model discloses a water lubricity composite balloon ureteral dilator, and relates to the technical field of ureteral dilators, the ureteral dilator comprises a dilator, the top of the dilator is provided with a flaring, the outer part of the dilator is provided with a dilation mechanism, and the lower end of the dilator is fixedly provided with a guide tube. Under the cooperation of the upper connecting pipe, the first dilatation balloon, the lower connecting pipe, the second dilatation balloon, the catheter, the connector and the hydrophilic adhesive film, dilatation of a narrow part can be achieved, meanwhile, the semi-ellipsoid-shaped dilatation balloon can reduce the occupied space in a cavity, meanwhile, the whole operation process is simple and convenient, and the working efficiency is improved. And through the guide wire channel and the formed containing cavity, the ureteral dilator can be safely and smoothly placed into a ureteral cavity under the guidance of the guide wire, a ureteral submucous false channel and a ureteral perforation are prevented from being formed, and after the guide wire is withdrawn, the effect of temporarily draining urine in the pelvis can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to ureter dilator technical field, concretely relates to a water lubricity composite balloon ureter dilator. BACKGROUND

[0002] The ureter is a pair of slender pipes, which is a flat cylinder, and the average pipe diameter is 0.5-0.7 cm. The adult ureter is 25-35 cm long, located in the retroperitoneum, vertically descending into the pelvis along the medial side of the psoas major muscle. The ureter has three narrow parts: one at the transition from the renal pelvis to the ureter, one at the entrance of the small pelvis, and the last one inside the wall of the bladder.

[0003] The incidence of upper urinary tract calculi and tumors is increasing year by year. During invasive examination and surgical treatment, a ureteroscope is usually placed into the ureter and renal pelvis. During clinical application, it is often difficult for the ureteroscope to enter due to the narrow lumen of the ureter, which may even lead to serious complications such as ureteral rupture, avulsion, and ureteral stenosis. Currently, a D-J tube is usually placed in advance for expansion for 2-4 weeks, and / or a guide sheath is used for expansion and protection of the ureteroscope during the operation to reduce the incidence of failure to enter the ureteroscope, especially in ureteroscopy. However, the use of a D-J tube for pre-expansion during surgery increases the treatment cost and time of the patient.

[0004] The existing technology has the following problems:

[0005] The existing dilator is mainly a hard plastic olive head ureter dilator, a single balloon ureter dilator, and a kidney fascia dilator used for local expansion of the lower segment of the ureter. However, the overall operation is complicated. UTILITY MODEL CONTENTS

[0006] To solve the above technical problems, the utility model adopts the following technical scheme:

[0007] A water lubricity composite balloon ureter dilator, comprising a dilator, a flared portion is formed at the top of the dilator, a dilating mechanism is installed on the outside of the dilator, and a guide tube is fixedly installed at the lower end of the dilator.

[0008] Preferably, the dilating mechanism comprises an upper connecting tube, the inner wall of the upper connecting tube is fixedly connected with the upper end of the dilator, a first dilating balloon is fixedly installed at the lower end of the upper connecting tube, a lower connecting tube is fixedly installed at the lower end of the first dilating balloon, a second dilating balloon is fixedly installed at the lower end of the lower connecting tube, a catheter is installed in the upper connecting tube, a connector is fixedly connected with the top of the catheter, and a hydrophilic film is coated on the outer surface of the dilator.

[0009] Preferably, the middle of the first expansion balloon is movably connected to the outside of the dilator, the middle of the lower connector is movably connected to the outside of the dilator, and the middle of the second expansion balloon is fixedly connected to the outside of the dilator.

[0010] Preferably, the upper connector, the first expansion balloon, the lower connector and the second expansion balloon are in communication.

[0011] Preferably, the upper connector, the first expansion balloon, the lower connector and the second expansion balloon are in communication.

[0012] Preferably, the upper connector, the first expansion balloon, the lower connector and the second expansion balloon are in communication.

[0013] Preferably, the upper connector, the first expansion balloon, the lower connector and the second expansion balloon are in communication.

[0014] Preferably, the inner wall of the dilator, the inner wall of the flared portion and the inner wall of the guide tube are provided with a guide wire channel.

[0015] Due to the adoption of the above technical scheme, the present application has the following technical progress compared with the prior art:

[0016] 1. The water-lubricating composite balloon ureteral dilator provided by the present application can dilate the narrow part through the cooperation of the upper connector, the first expansion balloon, the lower connector, the second expansion balloon, the guide tube, the connector and the hydrophilic film, and the dilating balloon in the shape of a semi-ellipsoid can reduce the occupied space in the cavity, and the overall operation process is simple and convenient.

[0017] 2. The water-lubricating composite balloon ureteral dilator provided by the present application can be safely and smoothly placed into the ureteral cavity through the guide wire channel and the accommodating cavity, and the guide wire can guide the ureteral dilator to avoid forming a submucosal false passage and ureteral perforation, and after the guide wire is withdrawn, the ureteral dilator can temporarily drain the urine in the renal pelvis. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a structural schematic view of the water-lubricating composite balloon ureteral dilator of the present application;

[0019] Figure 2 FIG. 2 is a structural schematic view of the top of the water-lubricating composite balloon ureteral dilator of the present application;

[0020] Figure 3 FIG. 3 is a structural schematic view of the dilating mechanism of the present application;

[0021] Figure 4The utility model discloses a structure diagram of expansion mechanism.

[0022] In the drawing: 1, dilator, 2, flared, 3, expansion mechanism, 4, guide tube, 5, guide wire channel, 31, upper connector, 32, first expansion balloon, 33, lower connector, 34, second expansion balloon, 35, catheter, 36, joint, 37, hydrophilic film. DETAILED DESCRIPTION

[0023] The utility model makes further detailed explanation from the following combining with example:

[0024] As Figures 1-4 The utility model provides a kind of water lubrication composite balloon ureter dilator, including dilator 1, the top of dilator 1 is equipped with flared 2, the outside of dilator 1 is equipped with expansion mechanism 3, and the lower end of dilator 1 is fixedly installed with guide tube 4.

[0025] Dilator 1 adopts latex material.

[0026] The inner wall of dilator 1, flared 2, guide tube 4 is all equipped with guide wire channel 5.

[0027] Through expansion mechanism 3, the expansion of narrow part can be realized, and the expansion balloon of half ellipsoid shape can reduce the occupied space in cavity, and the whole operation process is simple and convenient.

[0028] As Figures 3-4 The utility model discloses a kind of water lubrication composite balloon ureter dilator, including dilator 1, the top of dilator 1 is equipped with flared 2, the outside of dilator 1 is equipped with expansion mechanism 3, and the lower end of dilator 1 is fixedly installed with guide tube 4.

[0029] The middle of first expansion balloon 32 is movably connected with the outside of dilator 1, the middle of lower connector 33 is movably connected with the outside of dilator 1, and the middle of second expansion balloon 34 is fixedly connected with the outside of dilator 1.

[0030] Upper connector 31, first expansion balloon 32, lower connector 33, second expansion balloon 34 are all connected.

[0031] Upper connector 31, first expansion balloon 32, lower connector 33, second expansion balloon 34 and the expansion mechanism 3 between dilator 1 is equipped with accommodating cavity.

[0032] The hydrophilic film 37 has a three-layer structure. The first layer is a weak polar transition elastic protective layer that fits tightly with the surface to be coated. The weak polar transition elastic protective layer is made of a glue made of a weak polar body with strong bonding properties to latex; the second layer is a polar transition layer outside the elastic protective layer, which is made of a composite co-dissolution of a weak polar elastomer and a polar adhesive, and with the addition of a softener and / or a water-retaining agent; the third layer is a super hydrophilic coating outside the polar transition layer. The super hydrophilic coating is made of a polar adhesive and a water-soluble polymer dissolved in a mixed solvent, and an appropriate amount of softener is added to obtain a lubricating coating liquid, and then an appropriate amount of antibacterial agent and analgesic are added, mixed evenly, and then coated on the outside of the polar transition layer.

[0033] The working principle of the water-lubricated composite balloon ureteral dilator will be described in detail below.

[0034] like Figures 1-4 As shown, when the water-lubricated composite balloon ureteral dilator is used, the ureteroscope is first placed into the zebra guidewire or hook guidewire through the expansion port 2 to reach the upper part of the ureter, and the ureteral dilator 1 is placed into the patient's body under the guidance of the guidewire. At the same time, the first dilation balloon 32 and the second dilation balloon 34 correspond to the two common narrow parts of the junction of the ureter and the iliac blood vessels and the ureteral orifice, respectively. Then, physiological saline or contrast agent can be injected into the first dilation balloon and the second dilation balloon 34 through the connector 36 and the catheter 35. When the physiological saline or contrast agent is injected, the first dilation balloon 32 and the second dilation balloon 34 will expand. After moderate expansion, the ureteroscope is placed for examination or treatment.

[0035] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A water-lubricated composite balloon ureteral dilator comprising a dilator (1), a flared portion (2) is formed at the top of the dilator (1), characterized in that: The dilator (1) is externally provided with a dilating mechanism (3), and the lower end of the dilator (1) is fixedly provided with a guide pipe (4); The dilating mechanism (3) comprises an upper connector pipe (31), the inner wall of the upper connector pipe (31) is fixedly connected with the outer end of the dilator (1), the lower end of the upper connector pipe (31) is fixedly provided with a first dilating balloon (32), the lower end of the first dilating balloon (32) is fixedly provided with a lower connector pipe (33), the lower end of the lower connector pipe (33) is fixedly provided with a second dilating balloon (34), the inner part of the upper connector pipe (31) is provided with a catheter (35), the top of the catheter (35) is fixedly connected with a joint (36) in communication, and the outer surface of the dilator (1) is covered with a hydrophilic adhesive film (37).

2. The water-lubricated composite balloon ureteral dilator of claim 1, wherein: The middle part of the first dilating balloon (32) is movably connected with the outer part of the dilator (1), the middle part of the lower connector pipe (33) is movably connected with the outer part of the dilator (1), and the middle part of the second dilating balloon (34) is fixedly connected with the outer part of the dilator (1).

3. A water-lubricated composite balloon ureteral dilator according to claim 2, wherein: The upper connector pipe (31), the first dilating balloon (32), the lower connector pipe (33) and the second dilating balloon (34) are in communication.

4. The water-lubricated composite balloon ureteral dilator of claim 3, wherein: The upper connector pipe (31), the first dilating balloon (32), the lower connector pipe (33) and the second dilating balloon (34) are provided with a containing cavity between the dilator (1).

5. A water-lubricated composite balloon ureteral dilator according to claim 4, wherein: The lower end of the catheter (35) extends into the containing cavity, and the catheter (35) is in communication with the containing cavity.

6. The water-lubricated composite balloon ureteral dilator of claim 1, wherein: The dilator (1) is made of latex material.

7. The water-lubricated composite balloon ureteral dilator of claim 1, wherein: The inner walls of the dilator (1), the flaring (2) and the guide pipe (4) are all provided with a guide wire channel (5).

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