Method for delivery and installation of urethral stent into prostatic urethra

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to urology. A stent representing a threaded metal spiral is installed into the prostatic urethra with the use of a guide and the Foley catheter. The hollow rigid metal guide is curved along the urethral flexure, provided with a handle on the outer end and an inner thread on the inner end. The spiral stent is attached to the guide, and the Foley catheter is inserted therein. The device is installed into the prostatic urethra. The Foley catheter balloon is emptied. The catheter is removed. The guide is detached from the spiral and removed from the urethra.

EFFECT: method simplifies the delivery and provides the accurate installation of the urethral stent into the prostatic urethra by avoiding the necessity of using endoscopic equipment with a simple procedure for the guide and catheter removal from the urethra.

3 dwg

 

The invention relates to the field of medicine-urology, and directly to the shipping method and installation urethral stent in the prostatic urethra.

The known method of delivery and installation urethral samonasraivayuschiesya metal stent in the form of a spiral in the prostatic urethra by means of a hollow rigid metal conduit - pusher and endoscopic equipment (Uro-Web.m - Metal stents in urology, pp. 1-3).

The disadvantage of this method is the need for endoscopic equipment for delivery and installation of the stent, which complicates the method.

The known method of delivery and installation urethral stent in the prostatic urethra by means of a hollow rigid metal conduit associated with urethral stent, made of a metal, stainless steel, helix, consisting of two helices connected by a bridge, and endoscopic equipment for delivery and installation of urethral stent. The disadvantages of this method are the complexity of the method associated with the use of endoscopic equipment for delivery and installation urethral stent, the inability on one urethral stent to simulate different along the length of the stent due to their rigidity for a specific length of the prostatic division, p�animalsa a prototype (Uro Web.ru - Metallic stents in urology, pp. 1-5).

Solved by the invention the task is a simplification of the method of delivery and accurate installation urethral stent in the prostatic urethra by eliminating the need for the use of endoscopic equipment for delivery and installation urethral stent, ease of extraction from the urethra of the device for delivery and installation urethral stent in the prostatic urethra.

The task is solved in that the method of delivery and installation urethral stent in the prostatic urethra by means of a hollow rigid metal conduit, connected to a urethral stent, made of a metal spiral, characterized in that the installation and delivery of urethral stent in the prostatic part of the urethra is carried out by means of a hollow rigid metal conduit, bent along the curvature of the urethra, provided with a handle at the outer end and internally threaded at its inner end, the Foley catheter is provided with a cylinder and a valve for feeding him sterile liquid, for example water, screw washer, connecting the hollow rigid metal conduit, curved along the curvature of the urethra, urethral stent, made in the form of a spiral of metal alloy, such as gold 585, is provided in the portion adjacent to the hollow rigid metal�cal conductor, curved along the curvature of the urethra, internal thread, wherein the hollow rigid metal conduit, curved along the curvature of the urethra, and connected with it the spiral insert the Foley catheter introduced into the urethra, and the spiral in the prostatic part of the urethra into the bladder serves a sterile liquid, for example water, a hollow, rigid metal conduit, curved along the curvature of the urethra, connected to the coils, is withdrawn from the urethra up to the moment when inflated the balloon, sticking in the wall of the bladder in the region of the sphincter, and spiral into inflated balloon, will record the exact position of the helix in the prostatic urethra, the balloon is empty, remove the Foley catheter is detached from the spiral hollow rigid metal conduit, curved along the curvature of the urethra and remove it from the urethra.

The claimed invention is new, as it is not known from the prior art.

The claimed invention involves an inventive step, as it is for the specialist does not obviously follow from the prior art.

The claimed invention is industrially applicable as it can be used in urological practice.

Fig.1 is a General view of a hollow rigid metal conduit, bent along the curvature of the urethra, which is connected with the spiral, Fig.2 - General view of the hollow rigid metal conduit, isog�Otago by the curvature of the urethra, with the Foley catheter and coils, Fig.3 is a vertical sectional view of a threaded washer which is connected with a hollow rigid metal conduit, curved along the curvature of the urethra, and coils.

The known method of delivery and installation urethral stent in the prostatic urethra by means of a hollow rigid metal conduit, connected to a urethral stent, a metal spiral. New in the claimed method is that the installation and delivery of urethral stent 4 in the prostatic part of the urethra is carried out by means of a hollow rigid metal conduit 1, is curved along the curvature of the urethra, provided with a handle 2 at the outer end and internal thread 3 at its inner end, the Foley catheter 7, is provided with a cylinder 9 and a valve 10 for supplying it with a sterile liquid, for example water, screw washer 6, which connects the hollow rigid metal conduit 1, which is curved along the curvature of the urethra, urethral stent, made in the form of a spiral 4 metal alloy, such as gold 585, provided in the portion adjacent to the hollow rigid metal conduit 1, is curved along the curvature of the urethra, internal thread 5, wherein the hollow rigid metal conduit 1, which is curved along the curvature of the urethra, and connected to the helix 4 insert the Foley catheter 7, insert it into the urethra, and JV�RAL 4 - in the prostatic part of the urethra in the cylinder 9 serves a sterile liquid, for example water, a hollow, rigid metal conduit 1, which is curved along the curvature of the urethra, connected to the coils 4, is withdrawn from the urethra up to the moment when inflated, the balloon 9, braced against the wall of the bladder in the region of the sphincter, and helix 4 - bloated in the cylinder 9, will fix the exact position of helix 4 in the prostatic urethra, the balloon 9 is empty, remove the Foley catheter 7, is detached from the spiral 4 hollow rigid metal conduit 1, which is curved along the curvature of the urethra, and remove it from the urethra.

The inventive method is implemented by the device for delivery and installation urethral stent in the prostatic urethra.

A device for delivery and installation urethral stent in the prostatic part of the urethra includes a hollow rigid metal conduit 1, which is curved along the curvature of the urethra, provided with the outer side of the handle 2 and the inner side of the internal thread 3, the coil 4 is made of a metal alloy, such as gold 585, with the possibility of simulation of a spiral of the same size for a specific length of the prostatic division, thanks to the plasticity of the material of the helix, and adjacent to the hollow rigid metal conduit 1, is curved along the curvature of the urethra, the part 4 is provided with a spiral inside�Rennie thread 5, screw washer 6, which connects the hollow rigid metal conduit 1, which is curved along the curvature of the urethra, with helix 4, the Foley catheter 7, made in the form of a silicone tube 8 provided on the inner side of the cylinder 9 and the valve 10 for supplying it with a sterile liquid, for example water, with the possibility of fixing the position of helix 4 in the prostatic urethra distended balloon 9, hard-nosed in the wall of the bladder in the region of the sphincter, and coils 4, resting in the cylinder 9.

A device for delivery and installation urethral stent in the prostatic urethra works as follows. In hollow rigid metal conduit 1, which is curved along the curvature of the urethra, and connected to the helix 4 insert the Foley catheter 7, insert it into the urethra, and helix 4 in the prostatic urethra. In the cylinder 9 serves a sterile liquid such as water. Hollow rigid metal conduit 1, which is curved along the curvature of the urethra, connected to the coils 4, is withdrawn from the urethra up to the moment when the cylinder 9, braced against the wall of the bladder in the region of the sphincter, and helix 4 - bloated in the cylinder 9, will fix the exact position of helix 4 in the prostatic urethra. Then, the container 9 is empty, remove the Foley catheter 7, is detached from the spiral 4 hollow rigid metal conduit 1, which is curved along the curvature of the urethra and remove it �W of the urethra.

The claimed method of delivery and installation urethral stent in the prostatic urethra in comparison with known methods of the same kind and purpose provides a simplification of the method, with the use of endoscopic equipment for delivery and installation urethral stent in the prostatic urethra, ease of extraction from the urethra of the device for delivery and installation of the stent in the prostatic urethra, the possibility of the simulation of a spiral of the same size for a specific length of the prostatic division, increase elasticity, biological durability, biocompatibility, interpositives, extensibility, reduced friction, increased resistance to encrustation salts to bacterial infection, the formation on the surface of bacterial biofilms.

Method of delivery and installation urethral stent in the prostatic urethra by means of a hollow rigid metal conduit, connected to a urethral stent, made of a metal spiral, characterized in that the installation and delivery of urethral stent in the prostatic part of the urethra is carried out by means of a hollow rigid metal conduit, bent along the curvature of the urethra, provided with a handle at the outer end and internally threaded at its inner con�e, of the Foley catheter is provided with a cylinder and a valve for feeding him sterile liquid, for example water, screw washer, connecting the hollow rigid metal conduit, curved along the curvature of the urethra, urethral stent, made in the form of a spiral of metal alloy, such as gold 585, is provided in the portion adjacent to the hollow rigid metal conduit, curved along the curvature of the urethra, internal thread, wherein the hollow rigid metal conduit, curved along the curvature of the urethra, and connected with it the spiral insert the Foley catheter introduced into the urethra, and spiral in the prostatic part of the urethra into the bladder serves a sterile liquid, for example water, a hollow, rigid metal conduit, curved along the curvature of the urethra, connected to the coils, is withdrawn from the urethra up to the moment when the balloon, sticking in the wall of the bladder in the region of the sphincter, and spiral into inflated balloon, will record the exact position of the helix in the prostatic urethra, the balloon is empty, remove the Foley catheter is detached from the spiral hollow rigid metal conduit, curved along the curvature of the urethra and remove it from the urethra.



 

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21 cl, 21 ex, 19 dwg

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5 cl, 13 dwg

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3 ex

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FIELD: medicine.

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11 cl, 13 dwg

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20 cl, 3 dwg, 1 ex

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1 ex, 2 dwg

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3 dwg, 1 ex

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