RU2335305C2 - Device for treatment of meatostenosis - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention is referred to medical equipment, namely to devices for treatment of meatostenosis at male patients. The device for treatment of meatostenosis is executed in the form of the cannula from an elastic material opened on two ends. One end of the cannula is executed in a kind single-turn toroidal ring and has alternating wide and narrow sites which smoothly pass each other on a sinusoid. The technical result of the device is the meatostenosis relapse prevention by an optimum dilatation of an urinary meatus; prevention of urine from sputtering; improvement of an emiction and healing of a surgical wound of urethra.

EFFECT: meatostenosis relapse prevention; prevention of urine from sputtering; improvement of an emiction and healing of a surgical wound of urethra.

1 dwg, 1 ex

Description

The invention relates to medical equipment, namely to devices for the treatment of meatostenosis in male patients.

So known catheter for the urethra in the form of an elongated gutter with open and beveled ends. The catheter is placed in the hanging portion of the male urethra and is sutured distally to the meatus (Atlas of pediatric urologic surgery / by Frank Hinman /, 1994, p. 588).

However, the known catheter for the urethra does not fully ensure atraumatism of use, since at least one part of the cannula wall must be preliminarily adjusted to the shape of the urethra, which is not always possible if there is a wound surface or pathological changes, moreover, treatment of meatostenosis a known catheter is extremely difficult due to the oblique end of the cannula.

Closest to the proposed device for the treatment of meatostenosis in technical essence is a catheter for the urethra, which is made in the form of a flexible cannula open on one side and two ends, characterized in that the distal end of the catheter contains a cylindrical element with a bell and a pair of fixing holes of circular cross section ( Patent RU No. 2175252, 2001).

However, the known catheter for the urethra does not prevent recurrence of meatostenosis, because, firstly, its outer end forms a cylindrical profile throughout the scaphoid fossa of the urethra and therefore the contact surface of urothelium is subjected to excessive pressure during urination, which leads to inflammation and scarring; secondly, with prolonged standing of the catheter in the urethra, the inflamed mucosa of the scaphoid fossa can block the catheter, thus there are difficulties with safe and atraumatic removal of the catheter.

The technical result of the proposed device is to prevent recurrence of meatostenosis by optimal dilatation of the external opening of the urethra when using the device.

The technical result is achieved by the fact that the device for the treatment of meatostenosis has an open cannula of elastic material at two ends.

What is new is that one end of the cannula is made in the form of a single-turn toroidal ring having alternating wide and narrow sections that smoothly pass into each other along a sinusoid.

A single-turn toroidal ring with alternating wide and narrow sections, which smoothly pass into each other along the sinusoid, contributes to optimal dilatation of the external opening of the urethra when using the device, since it minimizes the contact surface of urothelium over wide sections, and narrow sections are excluded from this work. The sinusoidal profile of the ring prevents prolonged ischemia and inflammation of the urethra, which, as you know, have an outcome in scarring, moreover, ensures the optimal directivity and uniformity of the urine stream, prevents its spattering. The toroidal ring of the device provides stable compensation of the area of the meat section to the norm and prevents cicatricial narrowing of the external opening of the urethra, moreover, it contributes to the amortization of the meatus of the penis, as it blocks its unwanted vibrations during urination. A toroidal ring with wide and narrow sections that smoothly transition into each other along a sinusoid provides axisymmetric fitting of the device to the external opening of the urethra and its anatomical fixation using ligatures with minimal risk of slipping from narrow sections.

Comparative analysis with the prototype shows that the claimed device for the treatment of meatostenosis is characterized in that one end of the cannula is made in the form of a single-turn toroidal ring having alternating wide and narrow sections that smoothly pass into each other along a sinusoid, which meets the criteria of the invention of "novelty".

A new set of features ensures the achievement of a high positive effect of preventing recurrence of meatostenosis by optimal dilatation of the external opening of the urethra when using the device, as well as reducing postoperative complications, such as ischemia, inflammation of the urethra, and also ensures optimal directivity and uniformity of the urine stream. Therefore, the solution has "industrial applicability".

The essence of the proposed device for the treatment of meatostenosis is illustrated by the drawing, which shows the fixation of the device in the external opening of the urethra: 1 - cannula, 2 - wide and 3 - narrow sections of the toroidal ring, 4 - meatus.

The device for the treatment of meatostenosis has an open cannula (1) of elastic material at two ends. One end of the cannula (1) is made in the form of a single-turn toroidal ring and has alternating wide (2) and narrow (3) sections that smoothly pass into each other along a sinusoid.

A device for the treatment of meatostenosis is used as follows. After surgery on the male penis, for example, after meatoplasty with hypospadias, a device is inserted through the external opening of the urethra, temporarily fixing it with tweezers. Departing from the outer edge of the meatus 1 mm, the head of the penis is sutured at 3-6-9-12 hours from the outside inward, bypassing the toroidal ring proximal to the non-absorbable ligature on the atraumatic needle (5/00). By tying the ends of the ligatures, an exact fit and fixation of the toroidal ring to the glans penis is made, and ligatures occupy narrow sections of the toroidal ring. In the postoperative period, an early restoration of the physiological act of urination through the proposed device for the treatment of meatostenosis is possible, which does not require additional care during use and is atraumatically removed from the urethra upon medical request.

Example. Boy F., 12 years old. Diagnosis: meatostenosis; 7 months ago circumcision was performed, the postoperative period was complicated by the formation of stenosis of the external opening of the urethra. 04/10/2006 the operation - meatoplasty was performed. At the final stage of the operation, the proposed device for the treatment of meatostenosis (F = 15) is placed in the hanging part of the urethra and is hemmed to the glans penis. The postoperative period was uneventful, urination through the catheter was painless (recovered 5 hours after surgery), 7-8 times a day, the urine stream was wide at the exit, not sprayed. The wound healed by first intention, and the sutures and catheter were removed on the 7th day after the operation and the patient was discharged from the hospital. Examined after a month, does not show complaints, the meatus is calibrated by age, urination is normal. Is healthy.

Thus, the device for the treatment of meatostenosis prevents the recurrence of meatostenosis by optimal dilatation of the external opening of the urethra, prevents urine spatter, improves urination and healing of the surgical urethral wound.

Claims (1)

A device for treating meatostenosis in the form of an open cannula at two ends made of elastic material, characterized in that one end of the cannula is made in the form of a single-turn toroidal ring having alternating wide and narrow sections that smoothly pass into each other along a sinusoid.