Prostate expansion catheter with visual precise positioning function

Abstract

The invention relates to a prostate expansion catheter, in particular to a prostate expansion catheter with a visual precise positioning function. A main body of the prostate expansion catheter is an expansion catheter body provided with a urethral catheterization opening in the front end, and the urethral catheterization opening is communicated with an expansion catheter internal tube; the periphery of the expansion catheter body is sleeved with a fixing bag and an expansion bag in sequence from front to back, wherein the fixing bag is used for fixing the expansion catheter body into the urethra, and the expansion bag is used for expanding the urethra; the periphery of the expansion catheter body is further provided with a positioning sleeve which movably sleeves the expansion bag and can move axially relative to the expansion catheter body; a fixing bag communicating cavity and an expansion bag communicating cavity are formed in the expansion catheter body, wherein the front end of the fixing bag communicating cavity is communicated with the fixing bag, the front end of the expansion bag communicating cavity is communicated with the expansion bag, and the rear end of the fixing bag communicating cavity and the rear end of the expansion bag communicating cavity are communicated with the outside; the urethral catheterization opening is located in the front portion of the fixing bag. Through the prostate expansion catheter, it can be ensured that the expansion bag is located on the prostatic part of the urethra and the expanding length of the expansion bag keeps being precisely matched with the prostatic part of the urethra of a patient, and the prostate expansion catheter can be used as a urine catheter after an operation without secondary intubation.

Description

technical field [0001] The invention relates to a prostate dilation catheter, in particular to a prostate dilation catheter with the function of visual and precise positioning. Background technique [0002] Transurethral water sac dilation, also known as prostatic urethra and membranous urethral dilation, is a relatively advanced treatment technology for benign prostatic hyperplasia, and it is also the only surgery that preserves the original organs among many prostate surgeries, with minimal trauma and short operation time , with a high safety factor, has increasingly become an effective method for patients with benign prostatic hyperplasia to solve dysuria. [0003] The most important surgical instrument in dilation of the prostate is the prostate expansion catheter. At present, the existing expansion catheters all have the following three major defects: [0004] 1. Accurate positioning problem: the catheterization of existing expansion catheters relies on the personal sk...

AI Technical Summary

Problems solved by technology

[0004] 1. Accurate positioning problem: the catheterization of existing expansion catheters relies on the personal skills of medical staff, and whether the catheter has been placed in place is judged by subjective intuition and experience, so the operation of catheterization is complicated and requires the skills of doctors The deviation rate of catheterization is high, and the deviation rate of catheterization is extremely high, and inaccurate catheterization will cause part of the prostatic hyperplasia to not be expanded, which will reduce the effect of surgery, and may also cause urinary continence damage and urethral damage due to excessive expansion of the non-prostatic urethra. damage

[0005] For example, the Chinese patent No. is 201010578449.8, and the invention patent called "composite columnar water bag prostate expansion catheter" discloses a kind of expansion catheter, which utilizes the water bag at the front to expand the urethra after water injection, and similar Such a dilated catheter that uses a balloon to dilate the urethra, if the position of the balloon is deviated, a part of the urethra will not be dilated or the urethra will be damaged

[0006] 2. The problem of water bladder expansion deviation: once the water bladder of the prostatic expansion catheter deviates, a small section of the head of the water bladder will protrude into the bladder, and because the bladder has a large space and the space in the urethra is small, it will There will be a difference in the pressure of the two water bladders, so the liquid will be "squeezed" into the water bladder on the side of the bladder when the water is injected, which will cause the expansion of the entire water bladder to be unevenly distributed, and it will be located in the urethra. Small water bladder expansion will seriously affect the effect of urethral dilatation

As can be seen from the above, the reason why the above-mentioned problems occur in such dilating catheters that expand the urethra after dilating the urethra in the prior art is that the problem of the location of the capsule cannot be ensured. The problem of the capsule being able to fit exactly in the urethroprostate and the length of the capsule exactly matching the length of the urethroprostate in each patient

[0007] 3. The problem of changing the urinary catheter: the existing expansion catheter needs to be pulled out and re-inserted because there is no fixed air bag after the expansion operation is completed, which leads to multiple times in the patient's urethra during one operation. It is easy to cause secondary damage to the patient's urethra if the catheter is inserted and removed

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