CN203874267U - Double-cavity double-air-bag secure catheter - Google Patents

Abstract

The utility model discloses a double-cavity double-airbag safety catheter. The double-cavity double-airbag safety catheter is composed of an airbag chamber, a catheterization chamber, a rubber sealing flap, a balloon, and a catheter body. The cavity is adjacent to the front end of the catheter body along the direction from the end of the balloon cavity to the mouth of the balloon cavity. Balloon I and balloon II are arranged adjacently; the double-lumen double-balloon safety catheter can not only be well fixed in the bladder , and when the catheter is pulled out by external force, it can effectively reduce the urethral injury. The double-chamber balloon catheter is further designed with a scale on the catheter body, which greatly improves the convenience and accuracy of the doctor's operation and reduces the number of patients. Discomfort and urethral injury caused by improper insertion of a urinary catheter.

Description

A double-cavity double-airbag safety catheter

technical field

The utility model relates to a double-cavity double-airbag safety catheter, which belongs to the field of medical equipment. the

Background technique

In medicine, a catheter is inserted through the urethra into the bladder to drain urine. Catheterization is divided into two types: indwelling catheterization and intermittent catheterization. The former urinary catheter remains in the patient's body all the time, and it is pulled out or replaced with a new tube regularly when the condition permits. For the latter, catheterization is performed every 4 to 6 hours, and the catheter is pulled out after the bladder is emptied. Intermittent catheterization needs to insert and pull out the catheter once every few hours, which will inevitably damage the urethral mucosa during insertion. Therefore, in clinical practice, indwelling catheterization is mostly used, and the catheter can be replaced every 4 weeks. Indwelling catheterization mainly uses a balloon catheter, and the balloon end of the balloon catheter is inserted into the urethra first. Insert 3 to 5 cm for women and 18 to 20 cm for men, then use a syringe to inject 7 to 15 mL of distilled water or air into the tapered interface of the catheter to inflate the air bag and fix the catheter in the bladder. However, when the catheter is inserted all the way into the bladder, there will be slight pain, soreness and numbness, which is very uncomfortable. Patients often pull it out with their hands inadvertently, especially when the patient feels uncomfortable when sleeping. The tube is pulled out, and the inflated air bag is pulled out suddenly, causing great damage to the urethra. And the length that the existing urinary catheter inserts when the doctor inserts the urinary catheter depends on the doctor's experience completely, and inserting too long can cause the patient's sense of discomfort, and inserting too short can damage the urethra. the

Utility model content

The purpose of the utility model is to provide a double-cavity double-airbag safety catheter with good safety performance, convenient use, and can greatly reduce the safety hazards of patients when using it. the

The utility model provides a double-chamber double-airbag safety catheter, which is composed of an airbag chamber, a catheterization chamber, a rubber sealing flap, a balloon, and a catheter body. The balloon cavity described above is provided with a balloon I and a balloon II next to each other along the direction from the end of the balloon cavity to the mouth of the balloon cavity at the front end of the catheter body, and the thickness of the wall of the balloon I is 1/4 of the thickness of the wall of the balloon II. 2 to 4 times. the

The utility model air bag catheter also includes the following preferred solutions. the

In the preferred double-chamber double-balloon safety catheter, the distance between the balloon I and the front end of the catheter body is 3.5-4 cm, and the distance between the balloon II and the front end of the catheter body is 4.5-5 cm. the

The total capacity of the balloon I and the balloon II in the preferred double-cavity double-balloon safety catheter is 7-15 mL. the

In the preferred double-cavity double-airbag safety catheter, the catheter body is provided with a scale with a length of 18-25 cm from the front end. the

Described balloon I and balloon II are all the same in size, type, material (latex material) etc. except that the wall thickness is different. the

The catheter tube body is made of medical siliconized latex material. the

The wall thickness of the balloon I is preferably 2 to 3 times that of the balloon II. the

The design of the wall thickness of the balloon I and the balloon II in the double-cavity double-balloon safety catheter is obtained through theoretical calculation, and the wall thickness of the balloon I is 2-2% of the wall thickness of the balloon II. 4 times, especially at 2 to 3 times, the double-cavity double-balloon safety catheter can meet the requirements of fixing and protecting the urethra at the same time. When the thickness of balloon I is less than twice that of balloon II, inject medium into the balloon, and the inflated volumes of balloon I and balloon II are not much different, and enough medium needs to be injected to achieve the double lumen of the balloon. The double-balloon safety catheter is required to be fixed in the urethra, but at the same time it loses the function of protecting the urethra; when the thickness of the balloon I is more than 4 times that of the balloon II, the medium is injected into the balloon, and the deformability of the balloon II Large, large volume expansion, can play a role in fixing the double-chamber double-balloon safety catheter in the urethra, while the deformability of balloon 1 is small, and when the inflated balloon II is under pressure, the medium cannot be released in time. Squeeze into the balloon I, so when the external force pulls the urinary catheter, the balloon II is under pressure and the volume change is small, and it cannot protect the urethra (transfer resistance). the

The main body of the catheter body is a hollow catheter, and a drainage hole is provided at one end of the catheter body inserted into the urethra, and the other end of the catheter body is a catheter cavity, through which the drainage cavity can be connected. bag. the

The terminal end of the air bag cavity is the front end of the catheter body. the

The principle of use of the new dual-cavity double-airbag safety catheter of the utility model: the airbag cavity of the double-cavity double-airbag safety catheter is adjacent to the front end of the catheter body along the direction from the end of the airbag cavity to the mouth of the airbag cavity. Balloon I and balloon II are provided; since the wall thickness of balloon I is 2 to 4 times that of balloon II, the ability of balloon I to withstand pressure is large. When distilled water or physiological When the media such as saline or air, the volume expansion of balloon I is small, the volume expansion of balloon II is relatively large; the catheter is inserted from the urethra into the bladder, and the medium is injected into the balloon, and the volume expansion of balloon II will guide the urinary catheter to the bladder. The urinary catheter is fixed in the bladder to prevent the double-chamber double-balloon safety catheter from slipping out of the urethra. When external force is used suddenly or the catheter is pulled out with a large external force, the balloon II is under pressure, and the medium in the balloon II After being squeezed by pressure, enter the balloon I, the volume of the balloon II becomes smaller, and the volume of the balloon I becomes larger, until the volume of the balloon I and the balloon II is almost the same, even if the double-lumen double-balloon safety catheter is pulled out from the urethra Tube, will not cause major damage to the urethra. the

Beneficial effects of the utility model: the utility model solves some defects of the double-cavity balloon catheter in the prior art, such as, the catheter is inserted into the urethra and fixed in the bladder through the balloon, which will cause discomfort to the patient. When inadvertently, especially during sleep, when you feel pain or discomfort, you often pull out the catheter by hand, resulting in great damage to the urethra. At the same time, when the catheter is inserted into the urethra, the insertion depth depends entirely on the doctor's discretion. According to experience, if the insertion is too deep, it will cause discomfort to the patient; if the insertion is too shallow, the balloon will be embedded in the urethra and cause the patient's urethra to be damaged. The utility model completely overcomes the disadvantages of the balloon catheter in the prior art. The utility model double-chamber double-airbag safety catheter is provided with double balloons with inconsistent thickness of the bladder wall, which can play a good role on the one hand. The effect of fixing one end of the catheter in the bladder can effectively prevent the patient's urethra from being accidentally pulled out under the action of external force. In a further preferred solution of the utility model, a scale is designed at the insertion end of the double-chamber balloon catheter body, which greatly improves the convenience and accuracy of the doctor's operation, and also reduces the patient's troubles caused by the inappropriate insertion length of the balloon catheter. Discomfort, urethral injury. the

Description of drawings

[Fig. 1] is the double-chamber double-airbag safety catheter of the present utility model;

[Fig. 2] is the double chamber double air bag safety catheter of the present utility model (state when injecting distilled water);

[Fig. 3] is the dual-chamber dual-airbag safety catheter of the present invention (injected into distilled water, in the urethra, and subjected to the state when pulled by external force);

[Fig. 4] is a cross-sectional view of a double-cavity double-airbag safety catheter of the present utility model;

1 is the drainage hole, 2 is the balloon I, 3 is the balloon II, 4 is the catheter body, 5 is the air bag cavity, 6 is the catheterization cavity, 7 is the rubber sealing flap, 8 is the scale, and 9 is the air bag cavity Mouth, 10 is the mouth of the catheterization cavity. the

Detailed ways

The utility model is further described below in conjunction with the embodiments, rather than limiting the protection scope of the utility model. the

Example 1

The thickness of the wall of the balloon I2 in the double-cavity double-airbag safety catheter of the present utility model (as shown in Figure 1, and the cross-sectional view is shown in Figure 4) is twice that of the balloon II3, and the total capacity of the balloon I2 and the balloon II3 is 15mL. When in use, a drainage bag is connected to the catheter cavity mouth 10 of the double-cavity double-airbag safety catheter through a drainage tube. According to the scale 8 on the catheter tube body, carefully insert the front end of the catheter tube body 4 into the urethra, about 4cm for women and about 19cm for men; inject normal saline through the syringe, and insert the injection head of the syringe from the mouth of the balloon cavity 9 Insert the rubber sealing valve at 7 places, inject about 10ml of normal saline, and inflate the balloon II3, which will play the role of fixing the double-chamber double-balloon safety catheter in the bladder, while the balloon I2 will bulge slightly, occupying a large volume. Small, does not affect the fixation of the double-cavity double-airbag safety catheter (as shown in Figure 2), and will not cause discomfort to the patient. When the double-lumen double-balloon safety catheter is pulled out by a large external force, or suddenly pulled out, the changes of the balloon I2 and balloon II3 of the double-lumen double-balloon safety catheter are shown in Figure 2, and the balloon I2 When the volume becomes larger, the volume of the balloon II3 becomes smaller. Knowing that the injected liquid is distributed in the balloon I and the balloon II, even if the double-lumen double-balloon safety catheter is pulled out from the urethra, the chance of urethral injury is greatly reduced. the

Claims (5)

1. A double-cavity double-airbag safety catheter is composed of an airbag chamber (5), a catheterization cavity (6), a rubber sealing flap (7), a balloon, and a catheter body (4). In that, the balloon cavity (5) is adjacently provided with balloon I (2) and balloon II (3) at the front end of the catheter body (4) along the direction from the end of the balloon cavity (5) to the mouth of the balloon cavity (9). ), the wall thickness of balloon I (2) is 2 to 4 times that of balloon II (3). 2. The double-cavity double-balloon safety type urinary catheter as claimed in claim 1 is characterized in that, the distance between the balloon I (2) and the front end of the catheter body is 3.5-4 cm, and the distance between the balloon II (3) and the distance between the catheter and the catheter The front end of the tube body is 4.5 to 5 cm. 3. The double-chamber double-balloon safe urinary catheter according to claim 1, characterized in that the total capacity of the balloon I (2) and the balloon II (3) is 7-15 mL. 4. The double-cavity double-balloon safety urinary catheter according to claim 1, characterized in that the thickness of the wall of the balloon I (2) is 2 to 3 times that of the wall of the balloon II (3). 5. The double-chamber airbag safety catheter according to any one of claims 1 to 4, wherein the catheter body (4) is provided with a length of 18 to 25 cm from the front end. scale (8).