Urethral catheter capable of realizing constant bladder capacity

Abstract

According to the technical scheme, the catheter capable of achieving the constant bladder capacity is characterized in that the catheter comprises a catheter body, the catheter body comprises an inner pipeline, an outer pipeline and an insertion body, the head ends and the tail ends of the inner pipeline and the outer pipeline are closed to form an interlayer cavity, a through hole is communicated with the inner pipeline, a small balloon is arranged on the outer pipeline, and the small balloon is communicated with the insertion body. The outer pipeline is provided with a first injection pipe, the first injection pipe is communicated with the small balloon through the interlayer cavity, the guide pipe body is provided with a large balloon, the outer pipeline is provided with a second injection pipe, and the second injection pipe is communicated with the large balloon through a connecting pipe; the small balloon and the large balloon are arranged on the catheter body, after the catheter body is placed into the bladder, a certain amount of liquid needs to be injected into the small balloon before radiotherapy to achieve the effect of fixing the catheter body, and a certain amount of air or normal saline is injected into the large balloon during radiotherapy every time, so that the constant bladder capacity is achieved; therefore, the radiotherapy accuracy is improved, and the radiotherapy treatment effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, concretely is a urinary catheter that can realize bladder capacity constant. BACKGROUND

[0002] Bladder is the organ of storing and discharging urine, and its capacity is continuously changed, which influences the accuracy of pelvic organ radiotherapy and further influences the treatment effect, and it is very necessary for pelvic organ radiotherapy that bladder capacity is constant and repeatable, when bladder cancer is radiotherapy, the change of bladder capacity makes the preset target region position change, causes the inaccuracy of positioning, when gynecological organ or rectum is radiotherapy, the change of bladder capacity makes the position of radiotherapy target organ and surrounding organ change, such as after the bladder capacity reduces, the intestinal tract, bladder and ureter enter the radiotherapy visual field, thereby increasing the side damage of surrounding organ, in order to solve these problems, the existing solution in clinic has: exercising bladder to realize individualized expected urine volume, injecting a certain amount of liquid in the bladder through the urinary catheter (urine will be produced during radiotherapy, and the constant bladder capacity cannot be realized) or repositioning the target region every time CT or MRI, these methods not only are time-consuming and laborious, but also poor operability, and cannot satisfy the clinical demand. SUMMARY

[0003] In view of the problems in the background art, the utility model aims at providing a urinary catheter that can realize constant bladder capacity to solve the problems in the background art.

[0004] The above technical purpose of the utility model is realized by the following technical scheme.

[0005] A urinary catheter that can realize constant bladder capacity, comprising a urinary catheter body, wherein the urinary catheter body comprises an inner pipeline, an outer pipeline and an insertion body, the first and last ends of the inner pipeline and the outer pipeline are closed to form a sandwich cavity, the insertion body is fixedly installed at the first end of the outer pipeline, a through hole is formed in the insertion body, and the through hole is communicated with the inner pipeline, characterized in that a small balloon is arranged on the outer pipeline, a first injection tube is arranged on the outer pipeline, the first injection tube is communicated with the small balloon through the sandwich cavity, a large balloon is arranged on the urinary catheter body, a second injection tube is arranged on the outer pipeline, and the second injection tube is communicated with the large balloon through a connecting tube.

[0006] Preferably, the large balloon is fixedly installed on the outer pipeline, and the large balloon is located between the small balloon and the insertion body.

[0007] Preferably, the large balloon is fixedly installed on the outer pipeline, and the large balloon is sleeved on the outer side of the small balloon.

[0008] Preferably, the large balloon is fixedly installed on the insertion body.

[0009] Preferably, the insertion body is provided with a recess, and the large balloon is retractable into the recess.

[0010] To sum up, the utility model mainly has the following beneficial effects:

[0011] By setting the small balloon and the large balloon on the catheter body, a certain amount of liquid is injected into the small balloon to fix the catheter body before radiotherapy after the catheter body is placed into the bladder, a certain amount of air or normal saline (generally 150-250ml) is injected into the large balloon during radiotherapy positioning, and the liquid in the large balloon is discharged after each radiotherapy, so that a certain amount of air or normal saline is injected during each radiotherapy, the bladder capacity is constant, the relative stability of the pelvic organ position is achieved, the accuracy of radiotherapy is improved, and the radiotherapy treatment effect is improved.

[0012] By setting the small balloon and the large balloon on the catheter body, a certain amount of liquid is injected into the small balloon to fix the catheter body before radiotherapy after the catheter body is placed into the bladder, a certain amount of air or normal saline (generally 150-250ml) is injected into the large balloon during radiotherapy positioning, and the liquid in the large balloon is discharged after each radiotherapy, so that a certain amount of air or normal saline is injected during each radiotherapy, the bladder capacity is constant, the relative stability of the pelvic organ position is achieved, the accuracy of radiotherapy is improved, and the radiotherapy treatment effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a schematic diagram of the first embodiment of the utility model;

[0014] Figure 2 It is a schematic diagram of the second embodiment of the utility model;

[0015] Figure 3 It is a schematic diagram of the third embodiment of the utility model;

[0016] Figure 4 It is a schematic diagram of the third embodiment of the utility model;

[0017] In the drawing: 1, catheter body; 2, inner pipeline; 3, outer pipeline; 4, insertion body; 5, interlayer cavity; 6, through hole; 7, small balloon; 8, first injection pipe; 9, large balloon; 10, second injection pipe; 11, connecting pipe; 12, recess. DETAILED DESCRIPTION

[0018] The technical scheme in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0019] First embodiment

[0020] Please refer to Figure 1 ;

[0021] A urinary catheter capable of realizing constant bladder capacity, comprising a urinary catheter body 1, the urinary catheter body 1 comprising an inner pipe 2, an outer pipe 3 and an insertion body 4, the inner pipe 2 and the outer pipe 3 being closed at both ends to form a sandwich cavity 5, the insertion body 4 being fixedly installed at the head end of the outer pipe 3, a through hole 6 being formed in the insertion body 4, the through hole 6 being communicated with the inner pipe 2, a small balloon 7 being arranged on the outer pipe 3, a first injection pipe 8 being arranged on the outer pipe 3, the first injection pipe 8 being communicated with the small balloon 7 through the sandwich cavity 5, a large balloon 9 being arranged on the urinary catheter body 1, a second injection pipe 10 being arranged on the outer pipe 3, the second injection pipe 10 being communicated with the large balloon 9 through a connecting pipe 11; by arranging the small balloon 7 and the large balloon 9 on the urinary catheter body 1, before the urinary catheter body 1 is placed into the bladder, the small balloon 7 and the large balloon 9 are in a crumpled state, after the urinary catheter body 1 is placed into the bladder along the urethra, before radiotherapy, liquid is injected into the sandwich cavity 5 along the first injection pipe 8, so as to achieve the effect of expanding the small balloon 7 to fix the urinary catheter body 1, when positioning for radiotherapy, air or normal saline is injected into the large balloon 9 along the second injection pipe 10 and is input into the large balloon 9 through the connecting pipe 11, according to the need for positioning, the bladder capacity is selected, the accuracy of radiotherapy is effectively improved, and the treatment effect is improved; in addition, when a urinary catheter is used for pelvic cavity examination, before CT is performed, generally, urine is retained for about half an hour in advance, the bladder capacity is increased, the examination accuracy is increased, when urine is forgotten or urine cannot be produced, when the urinary catheter is used, a certain amount of air or liquid can be injected into the large balloon 9, the bladder capacity is increased, and constant capacity is realized.

[0022] Specifically, the large balloon 9 is fixedly installed on the outer pipe 3, and the large balloon 9 is located between the small balloon 7 and the insertion body 4; one end of the connecting pipe 11 penetrates through the outer pipe 3 to realize the communication between the second injection pipe 10 and the large balloon 9; by locating the large balloon 9 between the small balloon 7 and the insertion body 4, after the urinary catheter body 1 is placed into the bladder, a certain amount of liquid can be injected into the small balloon 7 to determine the position of the small balloon 7, and then the large balloon 9 can be safely expanded, so as to avoid that the position of the balloon is not inserted into the bladder and direct expansion of the large balloon 9 easily causes tearing of the urethra of the patient.

[0023] Second embodiment

[0024] Please refer to Figure 2 ;

[0025] The present embodiment proposes a urinary catheter body 1, which is substantially the same as the urinary catheter body 1 of the first embodiment, and the difference between the two is that the large balloon 9 is fixedly installed on the outer pipe 3, and the large balloon 9 is sleeved on the outer side of the small balloon 7, and one end of the connecting pipe 11 penetrates through the small balloon 7 to realize the communication between the second injection pipe 10 and the large balloon 9.

[0026] Third embodiment

[0027] Please refer to Figures 3-4 ;

[0028] The embodiment provides a catheter body 1, which is substantially same as the catheter body 1 of the first embodiment, and the difference between the two is that a concave cavity 12 is arranged on the insertion body 4, a large balloon 9 is fixedly arranged on the insertion body 4, the large balloon 9 can be contracted into the concave cavity 12, and one end of a connecting pipe 11 penetrates through the insertion body 4 to realize the communication between the second injection pipe 10 and the large balloon 9.

[0029] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A urinary catheter capable of maintaining a constant bladder capacity, comprising a catheter body, the catheter body including an inner tube, an outer tube, and an inserter, wherein the inner tube and the outer tube are closed at both ends to form a cavity, the inserter is fixedly installed at the head end of the outer tube, and the inserter has a through hole communicating with the inner tube, characterized in that: The external conduit is equipped with a small balloon and a first injection tube, which is connected to the small balloon through a collateral cavity. The catheter body is equipped with a large balloon, and the external conduit is equipped with a second injection tube, which is connected to the large balloon through a connecting tube. One end of the connecting tube passes through the external conduit to achieve communication between the second injection tube and the large balloon.

2. The urinary catheter according to claim 1, characterized in that: The large balloon is fixedly installed on the external tube, and the large balloon is located between the small balloon and the inserter.

3. A urinary catheter capable of achieving constant bladder capacity according to claim 1, characterized in that: The large balloon is fixedly installed on the outer tube, and the large balloon is overlaid on the outside of the small balloon.

4. A urinary catheter capable of achieving constant bladder capacity according to claim 1, characterized in that: The large balloon is fixedly installed on the inserter.

5. A urinary catheter capable of achieving constant bladder capacity according to claim 4, characterized in that: The insert has a cavity, and the large balloon can retract into the cavity.

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