Single-cavity air sac quasi-elliptic catheter

Abstract

The invention relates to a single-cavity air sac quasi-elliptic catheter, and belongs to the technical field of medical auxiliary apparatus. The catheter is characterized in that: the radial section of a catheter body is quasi-elliptic; the end part of the head end of the catheter body is provided with an oblate ellipsoidal bulge; a quasi-elliptic and oblate ellipsoidal long axis is longitudinal; the upper half part of the head end of the catheter body is provided with an air sac; and an inclined surface is arranged below the end part of the head end of the catheter body from front to back. The invention has the advantages that: the end part of the catheter is smooth, the shape of the catheter is similar to that of an external orifice of a urethra and a urethra on a prostatic part of a human body, and the discomfort of a patient is obviously reduced; the longitudinal long axis is positioned between the quasi-elliptic catheter and the urethra, and a large gap is formed between two sides, so that urethral discharge is smoothly drained; a water inlet hole is at the lowest position, so that urine in a urinary bladder is emptied, and the infection rate of a urinary system and the enuresis possibility of the urethral orifice are reduced; and the upper part of the head end of a single-cavity prostatic catheter is elliptic, a slightly expanded part on the lower part of the catheter is lifted at the bladder neck of a patient with prostatic hyperplasia, and the head part of the catheter can be guided into the bladder along a hyperplastic middle lobe.

Description

technical field [0001] The invention relates to a single-chamber airbag oval urinary catheter and a single-chamber airbag prostatic catheter, which belong to the technical field of medical auxiliary equipment. Background technique [0002] In the field of medicine, it is necessary to insert a urinary catheter and indwell it before surgery for internal diseases, surgical diseases, obstetrics and gynecology diseases, orthopedic diseases and urological diseases and operations. A urinary catheter is a commonly used medical aid. A catheter made of rubber, silicone, or plastic is inserted through the patient's urethra into the bladder to direct the flow of urine. After the catheter is inserted into the bladder, there is an air bag or water bag near the head of the catheter to keep the catheter fixed in the bladder and not easy to come out. The drainage part of the catheter is connected to a urine bag to collect urine. [0003] The disadvantages of the existing urinary catheter a...

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Problems solved by technology

[0003] The disadvantages of the existing urinary catheter are: 1. The urinary catheter is circular, while the outer opening of the urinary catheter of a normal person is in the shape of a longitudinal slit (1-shaped), the lower wall of the urethra in the prostate is arc-shaped, and the upper wall is connected with a human figure. Head (∧), the prostatic urethra of patients with benign prostatic hyperplasia is in a 1-shape, because the shape of the catheter is inconsistent with the shape of the human urethra, so when the circular catheter is inserted to expand the urethral wall, it will cause discomfort to the patient, especially in patients with benign prostatic hyperplasia; 2. There is no gap between the circular catheter and the urethra, and the secretions in the urethra cannot be smoothly drained out of the body, which may easily cause urinary tract infection, epididymis, orchitis, and even one of the possible causes of urethral stricture in the future; 3. The air bag is filled with water Or it is round after inflated, compressing the trigone area of ​​the bladder, causing bladder spasm, and the patient has frequent urination, urgency, and discomfort in the lower abdomen; The more the hole extends into the bladder, the urine in the bladder cannot be drained during the catheterization period, causing urinary tract infection, which is also one of the reasons for enuresis at the urethra when the patient has bladder spasm with the catheter; 5. Double-lumen balloon catheter , the tail end is divided into forks, which not only wastes materials, but also cannot be put into the double-lumen catheter after the operation is completed in the working cavity with the sheath, and the working sheath cannot be pulled out after it is put in.

At this time, the air bag is useless, it cannot fix the catheter, and it cannot compress the hemostasis; 5. The tip of the double-chamber balloon catheter is straight, and it is obviously prominent in the middle lobe of benign prostatic hyperplasia, and it is difficult to insert into the bladder when the bladder neck is raised.

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