Bionic urethral catheterization device

A urine device and bionic technology, applied in the field of medical devices, can solve problems such as urethral compression injury, urethral mucosal ischemic injury, and induced infection, and achieve the effects of weakening nerve stimulation, reducing ischemic injury, and reducing compression injury

Inactive Publication Date: 2010-12-29
THE WEST CHINA SECOND UNIV HOSPITAL OF SICHUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The urethral sphincter continues to open, and the urine and bacteria that drain out may retrograde into the bladder, causing infection;
[0005] (2) Although the continuous empty state of the bladder during surgery is beneficial to pelvic surgery and reduces the damage to the bladder during surgery, the bladder lacks a full state for a long time during non-operation, and bladder wall adhesions are prone to occur;
[0006] (3) The continuous drainage of the urinary catheter reduces the pressure gradient between the bladder and the outside world.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] In this embodiment, the structure of the bionic urinary catheterization device is as follows image 3 As shown, it is mainly composed of a catheter 1, a balloon 2 arranged on the upper part of the catheter, a one-way valve 5 and a pressure relief valve 9. The catheter 1 contains a balloon filling medium delivery chamber 3 and a urine drainage chamber 4. The catheter balloon is filled The section of the medium delivery chamber covered by the balloon is provided with a hole 6 communicating with the balloon. The upper end of the urine drainage chamber is opened with a urine inlet 7, and the lower end is opened with a urine outlet. The one-way valve 5 is arranged on the catheter balloon. Filling the lower end of the medium delivery chamber, the pressure relief valve 9 is arranged at the lower end of the urine drainage chamber.

[0048] The structure of pressure relief valve 9 is as Figure 9 , Figure 10 As shown, it consists of a valve body 13, a first valve core 14, a v...

Embodiment 2

[0051] In this embodiment, the structure of the bionic urinary catheterization device is as follows Figure 5 shown. The structure of the pressure relief valve 9 in the bionic urinary catheterization device is as follows: Figure 9 , Figure 10 shown. The difference from Embodiment 1 is that a irrigation port 12 is provided on the urine drainage chamber 4 , and the irrigation port is located above the pressure relief valve 9 .

Embodiment 3

[0053] In this embodiment, the structure of the bionic urinary catheterization device is as follows Figure 6 shown. The structure of the pressure relief valve 9 in the bionic urinary catheterization device is as follows: Figure 9 , Figure 10 shown. The difference from Embodiment 1 is that the catheter 1 is provided with a scale line 20, which indicates the length from the top of the catheter.

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Abstract

A bionic urethral catheterization device comprises a catheter and a balloon arranged on the upper section of the catheter, wherein the catheter includes a balloon filling medium convey cavity and a urine drainage cavity, or the catheter includes a balloon filling medium convey cavity, a urine drainage cavity and a lavage cavity; a check valve is arranged at the lower end of the balloon filling medium convey cavity; a hole communicated with the balloon is arranged on the section, which is covered by the balloon, of the balloon filling medium convey cavity; a urine inlet is arranged at the upper end of the urine drainage cavity and a urine outlet and a relief valve simulating the physiological function of bladder sphincter are arranged at the lower end of the urine drainage cavity. The bionic urethral catheterization device can prevent and cure uroschesis after indwelling the urethral catheterization device and avoid urinary tract retrograde infection and bladder adhesion.

Description

technical field [0001] The invention belongs to medical equipment, in particular to an indwelling catheterization device for patients after surgery, severe burns, urinary retention, advanced bladder cancer, urinary incontinence and the like. Background technique [0002] Existing urinary catheterization devices have two structures, wherein the catheter of one catheterization device is a two-lumen tube, which contains a balloon filling medium delivery chamber and a urine drainage chamber, such as figure 1 As shown, the catheter of another urinary catheterization device is a three-lumen tube, which contains a balloon filling medium delivery lumen, a urine drainage lumen, and an lavage lumen, such as figure 2 shown. When in use, both catheterization devices pass through the inflated high-pressure balloon (pressure > 100cmH 2 O) Fixed in the bladder. [0003] Under normal physiological conditions, the bladder collects and stores the urine produced by both kidneys, and can em...

Claims

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Application Information

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IPC IPC(8): A61M25/10A61M39/22A61F2/958
Inventor 李华凤杨沛胡丽娜罗金凤张先娟刘小娇江晓琴倪娟周晖熊艳
Owner THE WEST CHINA SECOND UNIV HOSPITAL OF SICHUAN
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