Ureteral catheter with balloon

Abstract

The utility model discloses a ureteral catheter with a balloon, which belongs to the technical field of medical equipment. The utility model comprises a catheter body, wherein a guide groove is provided inside the catheter body, a mounting groove is provided at the bottom of the catheter body, the guide groove is communicated with the inside of the mounting groove, a guide core is provided inside the guide groove, a bottom plate is provided at the top of the guide core, a piston is provided at the outer periphery of the top end of the bottom plate by gluing, a spring is provided between the piston and the bottom plate, the two ends of the spring are respectively fixedly connected with the bottom plate and the piston, a pull wire is provided at the bottom center of the piston, and the pull wire extends to the bottom of the guide core, and the mounting groove is provided at the bottom of the catheter body, and the guide core and the piston at the top can be inserted into the inside of the guide groove, and the top of the drainage channel and the communicating port of the guide groove are blocked, so as to avoid the situation that body fluid overflows and pollutes the environment during the intubation process.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and in particular relates to a ureteral catheter with a balloon. Background Art

[0002] The vast majority of ureteral stones originate from the kidneys, and are mostly unilateral. They often occur in middle-aged people, with a higher incidence in men than in women. The causes and composition of stones are similar to those of kidney stones. The main secondary lesions include urinary tract obstruction, infection, epithelial damage, and cancer. Large or rough-surfaced stones are easily embedded in the narrow part of the ureter, causing severe obstruction and renal damage. Severe bilateral ureteral stones can even cause renal failure. Generally speaking, ureteral stones can be removed by ureteroscopy regardless of where they are in the ureter. However, it is currently believed that it is better to treat stones in the middle and lower segments, using ureteroscopy for ultrasonic lithotripsy, electrohydraulic lithotripsy, laser lithotripsy, pneumatic ballistic lithotripsy, and electronic kinetic lithotripsy. The first two methods have been basically abandoned due to their great damage to tissues.

[0003] At present, the existing ureteral catheters, after insertion, have the possibility of leakage of patient body fluids due to the poor sealing effect of the front end occluder, which causes the surgical environment to be contaminated and requires the surgeon to clean it. This makes it inconvenient to collect body fluids and delays the operation. For this reason, we propose a ureteral catheter with a balloon. Utility Model Content

[0004] The purpose of the utility model is to provide a ureteral catheter with a balloon to solve the existing problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a ureteral catheter with a balloon, comprising a catheter body, a guide core and a piston, a guide groove being provided inside the catheter body, a mounting groove being provided at the bottom of the catheter body, the guide groove being communicated with the inside of the mounting groove, a guide core being provided inside the guide groove, a bottom plate being provided at the top of the guide core, a piston being provided at the outer periphery of the top end of the bottom plate by gluing, a spring being provided between the piston and the bottom plate, the two ends of the spring being fixedly connected to the bottom plate and the piston respectively, a pull wire being provided at the bottom center of the piston, and the pull wire extending to the bottom of the guide core.

[0006] Preferably, a mounting portion is fixedly connected to the interior of the mounting groove via threads, a top of the mounting portion is fixedly connected to the guide core, and the pull wire extends to the inner bottom end of the mounting portion.

[0007] Preferably, a limiting slider is provided on the inner side of the bottom of the mounting portion, the top of the limiting slider is fixedly connected to the bottom of the pull wire, and a pull ring is provided on the bottom of the limiting slider.

[0008] Preferably, a bellows sleeve is provided on the outside of the spring, and the top and bottom of the bellows sleeve are fixedly and sealedly connected to the bottom plate and the piston respectively by gluing.

[0009] Preferably, a balloon body is provided on the top periphery of the catheter body, an injection tube is provided on the top outer side of the bottom mounting groove of the catheter body, an injection channel is opened on the inner side of the catheter body close to the injection tube, and both ends of the injection channel are respectively sealed and connected with the balloon body and the injection tube.

[0010] Preferably, a drainage channel is provided on the inner wall of one side of the inner top of the guide groove, a drainage pipe is provided on the other side of the outer top of the mounting groove, and the bottom of the drainage channel is sealed and connected to the drainage pipe.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. By setting a mounting groove at the bottom of the catheter body and connecting it with the mounting part through a thread, the guide core and the piston at the top can be inserted into the guide groove, and the connecting port between the top of the drainage channel and the guide groove is blocked, thereby avoiding the situation where body fluids overflow and pollute the environment during the intubation process.

[0013] 2. A spring and a bellows sleeve are arranged between the piston and the guide core to realize the reset function of the piston. When interruption is required, the pull ring can be loosened, and the piston can be lifted up under the action of the spring reset force to block the piecing channel again, so as to cope with emergencies. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the disassembled structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the catheter body of the utility model;

[0017] Figure 4 This is a schematic diagram of the guide core structure of the utility model;

[0018] Figure 5 For the utility model Figure 4 A is a schematic diagram of the enlarged structure.

[0019] In the figure: 1. catheter body; 2. balloon body; 3. injection tube; 4. injection channel; 5. discharge tube; 6. discharge channel; 7. guide groove; 8. mounting groove; 9. guide core; 10. mounting part; 11. pull wire; 12. limit slider; 13. pull ring; 14. piston; 15. bottom plate; 16. corrugated sleeve; 17. spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-5 The utility model provides a technical solution of a ureteral catheter with a balloon: it includes a catheter body 1, a guide core 9 and a piston 14, a guide groove 7 is opened inside the catheter body 1, a mounting groove 8 is arranged at the bottom of the catheter body 1, the guide groove 7 is communicated with the inside of the mounting groove 8, a guide core 9 is arranged inside the guide groove 7, a bottom plate 15 is arranged on the top of the guide core 9, a piston 14 is arranged on the outer periphery of the top end of the bottom plate 15 by gluing, a spring 17 is arranged between the piston 14 and the bottom plate 15, two ends of the spring 17 are fixedly connected to the bottom plate 15 and the piston 14 respectively, a pull wire 11 is arranged at the bottom center of the piston 14, and the pull wire 11 extends to the bottom of the guide core 9.

[0022] Specifically, the interior of the mounting groove 8 is fixedly connected with the mounting portion 10 via threads, the top of the mounting portion 10 is fixedly connected to the guide core 9 , and the pull wire 11 extends to the inner bottom end of the mounting portion 10 .

[0023] Specifically, a limiting slider 12 is provided at the inner side of the bottom of the mounting portion 10 , the top of the limiting slider 12 is fixedly connected to the bottom of the pull wire 11 , and a pull ring 13 is provided at the bottom of the limiting slider 12 .

[0024] Specifically, a bellows sleeve 16 is provided outside the spring 17 , and the top and bottom of the bellows sleeve 16 are fixedly and sealedly connected to the bottom plate 15 and the piston 14 respectively by gluing.

[0025] Specifically, a balloon body 2 is provided on the top periphery of the catheter body 1, an injection tube 3 is provided on the top outer side of the bottom mounting groove 8 of the catheter body 1, and an injection channel 4 is opened on the inner side of the catheter body 1 close to the injection tube 3, and both ends of the injection channel 4 are sealed and connected with the balloon body 2 and the injection tube 3 respectively.

[0026] Specifically, a drainage channel 6 is provided on the inner wall of one side of the inner top of the guide groove 7 , a drainage pipe 5 is provided on the other side of the outer top of the mounting groove 8 , and the bottom of the drainage channel 6 is sealed and connected to the drainage pipe 5 .

[0027] In the present embodiment, when in use, the catheter body 1 is inserted into the patient's ureter, and then liquid is injected into the interior of the balloon body 2 through the injection tube 3 and the injection channel 4 to expand it, thereby stretching the ureter so that the stone can pass through the ureter, so as to facilitate lithotripsy for the patient. A piston 14 is arranged inside the guide groove 7, and the pull wire 11 is extended to the inside of the mounting portion 10 by using the guide core 9 so that it is connected to the limit slider 12. Under normal circumstances, the piston 14 blocks the drainage pipe 5 to prevent body fluid leakage. Then, after the drainage pipe 5 is connected to the collection container, the pull ring 13 is pulled, and the limit slider 12 stretches the piston 14 with the pull wire 11, so that it slides inside the guide groove 7 and compresses the spring 17. At this time, the drainage channel 6 is exposed, and the patient's body fluid flows into the drainage pipe 5 through the drainage channel 6 and enters the collection container, so as to prevent body fluid overflow from polluting the environment in the operating room. After the body fluid is completely discharged, the mounting portion 10 can be disassembled for subsequent operations.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ureteral catheter with a balloon, comprising a catheter body (1), a guide core (9) and a piston (14), characterized in that: A guide groove (7) is provided inside the catheter body (1), a mounting groove (8) is provided at the bottom of the catheter body (1), the guide groove (7) is communicated with the inside of the mounting groove (8), a guide core (9) is provided inside the guide groove (7), a bottom plate (15) is provided on the top of the guide core (9), a piston (14) is provided on the outer periphery of the top end of the bottom plate (15) by gluing, a spring (17) is provided between the piston (14) and the bottom plate (15), the two ends of the spring (17) are respectively fixedly connected to the bottom plate (15) and the piston (14), a pull wire (11) is provided at the bottom center of the piston (14), and the pull wire (11) extends to the bottom of the guide core (9).

2. A ureteral catheter with a balloon according to claim 1, characterized in that: The interior of the installation groove (8) is fixedly connected with a mounting portion (10) via threads, the top of the installation portion (10) is fixedly connected to the guide core (9), and the pull wire (11) extends to the inner bottom end of the installation portion (10).

3. A ureteral catheter with a balloon according to claim 1, characterized in that: A limiting slider (12) is provided on the inner side of the bottom of the mounting portion (10), the top of the limiting slider (12) is fixedly connected to the bottom of the pull wire (11), and a pull ring (13) is provided on the bottom of the limiting slider (12).

4. A ureteral catheter with a balloon according to claim 1, characterized in that: A bellows sleeve (16) is provided outside the spring (17), and the top and bottom of the bellows sleeve (16) are fixedly and sealedly connected to the bottom plate (15) and the piston (14) respectively by gluing.

5. A ureteral catheter with a balloon according to claim 1, characterized in that: A balloon body (2) is arranged on the outer periphery of the top of the catheter body (1); an injection tube (3) is arranged on the outer side of the top of the bottom mounting groove (8) of the catheter body (1); an injection channel (4) is opened on the inner side of the catheter body (1) close to the injection tube (3); and both ends of the injection channel (4) are respectively sealed and connected to the balloon body (2) and the injection tube (3).

6. A ureteral catheter with a balloon according to claim 1, characterized in that: A drainage channel (6) is provided on the inner wall of one side of the inner top of the guide groove (7), a drainage pipe (5) is provided on the other side of the outer top of the mounting groove (8), and the bottom of the drainage channel (6) is sealed and connected to the drainage pipe (5).

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