Single-cavity ureteral catheter with balloon

Abstract

The single-cavity ureteral catheter comprises a catheter main body, one end of the catheter main body is of an opening structure, the other end of the catheter main body is of a sealing structure, and a balloon part capable of being expanded after being injected with water is arranged at the sealing end of the catheter main body. The open end of the catheter body is provided with an integrated syringe connector with the diameter gradually enlarged, and the position, close to the open end, of the outer wall of the catheter body is provided with a cut-off position mark. The single-cavity ureteral catheter with the balloon is simple in structure, convenient to produce, capable of effectively preventing calculi from escaping and capable of being used for guiding a ureteroscope.

Description

Technical Field

[0001] The utility model relates to the technical field of medical catheters, in particular to a single-lumen ureteral catheter with a balloon. Background Art

[0002] In the prior art, ureteroscopic surgery usually requires a guide wire to guide the ureteroscope into the ureter, and a ureteral stent is placed under the guidance of the guide wire. The ureteral stent is generally hollow and needs to be guided by a guide wire. However, the guide wire guidance only has a guiding function and cannot effectively prevent the stone from moving into the upper ureter or renal pelvis.

[0003] Chinese patent CN208065565U discloses a ureteral catheter with a balloon, wherein the ureteral catheter has an insertion end and an external end, and three independent channels are arranged in the ureteral catheter, namely, a water injection channel, a balloon channel and a guidewire channel, wherein the balloon channel is connected to the balloon located on the catheter body, and the starting part of the balloon channel is located at the external end of the ureteral catheter and ends at the balloon; the water outlet of the water injection channel is located at the insertion end of the ureteral catheter, the water injection port is located at the external end of the ureteral catheter, and the water injection channel runs through the entire ureteral catheter; the guidewire channel runs from the insertion end of the ureteral catheter to the external end of the ureteral catheter, and runs through the entire ureteral catheter. The utility model has three channels in the middle, namely, the urine drainage channel, the balloon channel and the guidewire channel, and the balloon is located in the middle of the catheter. It has the following problems: 1. Its diameter is relatively thick, and the outer diameter is designed to be 10Fr. The structure determines that this catheter cannot be used alone to guide the ureteroscope. It can only be guided into the stone position by a zebra guidewire, and then the device is inserted under direct vision; 2. Its structure determines that this catheter can only be hard, and it cannot be as soft as a zebra guidewire, and cannot play the role of guiding the ureter into the scope. 3. Its structure is complex, with 3 channels inside, so the material and manufacturing process requirements are high, and the probability of damage during use increases. 4. Since the internal working channel of the ureteroscope is generally 3.6Fr to 6.4Fr, it cannot be inserted into the working channel of the ureteroscope, and can only be guided into the stone position outside the ureteroscope through a zebra guidewire. Utility Model Content

[0004] The utility model aims to provide a single-lumen ureteral catheter with a balloon, which has a simple structure, is easy to produce, can effectively prevent stones from escaping, and can also be used to guide a ureteroscope.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] Provided is a single-lumen ureteral catheter with a balloon, comprising: a catheter body, one end of the catheter body being an open structure, and the other end being a sealing structure, the catheter body being provided with a balloon portion that can be expanded by injection of water at the sealing end, the open end of the catheter body being provided with an integrated syringe interface with a gradually increasing diameter, and a shearing mark being provided on the outer wall of the catheter body near the open end.

[0007] As a preferred solution of the single-lumen ureteral catheter with a balloon, the catheter body and the balloon part are both made of silicone.

[0008] As a preferred solution of the single-lumen ureteral catheter with a balloon, the balloon portion is located at the end of the sealing end of the catheter body.

[0009] As a preferred solution of the single-lumen ureteral catheter with a balloon, the balloon portion is 5-10 cm away from the sealing end of the catheter body.

[0010] As a preferred solution of the single-lumen ureteral catheter with a balloon, the outer diameter of the catheter body is 3.1 Fr, and the inner diameter of the catheter body is 1.2 Fr.

[0011] As a preferred solution of the single-lumen ureteral catheter with a balloon, the length of the catheter body is 160-170 cm.

[0012] As a preferred solution of the single-lumen ureteral catheter with a balloon, the outer surface of the catheter body is covered with a hydrophilic coating.

[0013] The beneficial effects of the utility model are as follows: the single-lumen ureteral catheter with a balloon proposed by the utility model is provided with a balloon part that can be expanded by injecting water at the sealing end of the catheter body, and has a single-channel structure, which is simple in structure and easy to produce, and can effectively prevent stones from moving to the upper ureter or the renal pelvis; at the same time, a shearing mark is provided on the outer wall of the catheter body near the opening end, and after the balloon is used to block the stones and complete the lithotripsy, the water in the balloon can be extracted, and after being cut off from here, it can be used just like an ordinary zebra guidewire, and can complete operations such as assisting in catheterization; the balloon part can also serve as a simple ureteral dilator, appropriately dilating the ureter or changing the angle of the ureteral opening, which is conducive to the entry of a ureteroscope, and is particularly suitable for patients with ureteral stenosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for use in the embodiments of the present utility model. Obviously, the drawings described below are only some embodiments of the present utility model, and for ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work.

[0015] Figure 1It is a structural schematic diagram of a single-lumen ureteral catheter with a balloon according to an embodiment of the utility model;

[0016] Figure 2 It is a structural schematic diagram of a single-lumen ureteral catheter with a balloon according to another embodiment of the utility model;

[0017] Figure 3 It is a schematic structural diagram of a single-lumen ureteral catheter with a balloon described in an embodiment of the utility model during lithotripsy.

[0018] In the figure:

[0019] 1. Catheter body; 2. Balloon part; 3. Integrated syringe interface; 4. Cutting point mark; 5. Ureteral stone; 6. Holmium laser fiber; 7. Ureteroscopy; 8. Ureteral wall. DETAILED DESCRIPTION

[0020] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0021] The following describes the embodiments of the present disclosure through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0022] Reference Figure 1-3 An embodiment of the utility model provides a single-lumen ureteral catheter with a balloon, comprising: a catheter body 1, one end of the catheter body 1 is an open structure, and the other end is a sealing structure, the catheter body 1 is provided with a balloon part 2 that can be expanded by water injection at the sealing end, the open end of the catheter body 1 is provided with an integrated syringe interface 3 with a gradually increasing diameter, and the outer wall of the catheter body 1 is provided with a shear mark 4 near the open end.

[0023] In the above technical scheme, in transurethral ureteroscopic holmium laser lithotripsy, the holmium laser optical fiber 6 and the single-lumen ureteral catheter with a balloon of the present invention are located in the working channel of the ureteroscope 7, and both extend from the working channel of the ureteroscope 7. The single-lumen ureteral catheter with a balloon of the present invention guides the ureteroscope 7 into the ureter, and the balloon portion 2 of the catheter body 1 extends into the space above the ureteral stone 5 through the gap between the ureteral stone 5 and the ureteral wall 8, and water is injected through the integrated syringe interface 3, so that the balloon portion 2 expands and fills the ureteral lumen, which can effectively prevent the stone from moving to the upper ureter or the renal pelvis; in percutaneous nephroscopic holmium laser lithotripsy, the holmium laser optical fiber 6 and the single-lumen ureteral catheter of the present invention guide the ureteroscope 7 into the ureter, and the balloon portion 2 of the catheter body 1 extends into the space above the ureteral stone ... 5 through the gap between the ureteral stone 5 and the ureteral wall 8, and water is injected through the integrated syringe interface 3, so that the balloon portion 2 expands and fills the ureteral The single-lumen ureteral catheter with a balloon is located in the working channel of the ureteroscope 7, and both of them extend out from the working channel of the ureteroscope 7. The single-lumen ureteral catheter with a balloon of the utility model guides the ureteroscope 7 into the ureter, and the balloon part 2 of the catheter body 1 extends into the space below the ureteral stone through the gap between the ureteral stone 5 and the ureteral wall 8. Water is injected through the integrated syringe interface 3, so that the balloon part 2 expands and fills the ureteral cavity where it is located, which can effectively prevent the stone from moving to the lower part of the ureter; the utility model adopts a single-channel structure, which is simple in structure and easy to produce. It can effectively prevent the stone from escaping and can also be used to guide the ureteroscope 7. The size of the balloon is infinitely adjustable according to the water filling amount, and has a wide range of applications.

[0024] In some embodiments, the catheter body 1 and the balloon part 2 are both made of silicone. This structural material design of the utility model has good compatibility with the human body, less irritation and damage to the urethral mucosa, and no allergic reaction. In some other embodiments, other applicable materials can also be used, not limited to silicone materials.

[0025] In some embodiments, the balloon portion 2 is located at the end of the sealing end of the catheter body 1. In some other embodiments, the balloon portion 2 is 5-10 cm away from the end of the sealing end of the catheter body 1.

[0026] Specifically, the outer diameter of the catheter body 1 is 3.1Fr, i.e., 1mm, and the inner diameter of the catheter body 1 is 1.2Fr, i.e., 0.4mm. This structural design enables the single-lumen ureteral catheter with a balloon of the utility model to be placed into the working channel of the ureteroscope 7 at the same time as the laser optical fiber, and can also ensure the softness of the single-lumen ureteral catheter with a balloon of the utility model.

[0027] Specifically, the length of the catheter body 1 is 160-170 cm.

[0028] In some embodiments, the outer surface of the catheter body 1 is covered with a hydrophilic coating, which makes the present invention less irritating and damaging to the urethral mucosa and does not cause allergic reactions.

[0029] In the description of the present invention, it should be understood that the terms "middle", "length", "up", "down", "front", "back", "vertical", "horizontal", "inside", "outside", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In the present invention, unless otherwise clearly specified and limited, the first feature "on" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. "Multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The above is only for explaining the implementation mode of the utility model and is not used to limit the utility model. For those skilled in the art, any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the utility model without creative work should be included in the protection scope of the utility model.

Claims

1. A single-lumen ureteral catheter with a balloon, characterized in that: include: A catheter body (1), one end of the catheter body (1) is an open structure, and the other end is a sealed structure, the catheter body (1) is provided with a balloon portion (2) that can be expanded by water injection at the sealed end, the open end of the catheter body (1) is provided with an integrated syringe interface (3) with a gradually increasing diameter, and the outer wall of the catheter body (1) is provided with a shear mark (4) near the open end.

2. The single-lumen ureteral catheter with a balloon according to claim 1, characterized in that: The catheter body (1) and the balloon part (2) are both made of silicone.

3. The single-lumen ureteral catheter with a balloon according to claim 1, characterized in that: The balloon portion (2) is located at the end of the sealing end of the catheter body (1).

4. The single-lumen ureteral catheter with a balloon according to claim 1, characterized in that: The balloon portion (2) is 5-10 cm away from the sealing end of the catheter body (1).

5. The single-lumen ureteral catheter with a balloon according to claim 1, characterized in that: The outer diameter of the catheter body (1) is 3.1 Fr, and the inner diameter of the catheter body (1) is 1.2 Fr.

6. The single-lumen ureteral catheter with a balloon according to claim 1, characterized in that: The length of the catheter body (1) is 160-170 cm.

7. The single-lumen ureteral catheter with a balloon according to claim 1, characterized in that: The outer surface of the catheter body (1) is covered with a hydrophilic coating.

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