CN215741286U

CN215741286U - Urethroscope-based urethral dilator

Info

Publication number: CN215741286U
Application number: CN202122288001.9U
Authority: CN
Inventors: 陈彦博; 徐慧; 徐欢; 占明; 陈其; 王�忠
Original assignee: Ninth Peoples Hospital Shanghai Jiaotong University School of Medicine
Current assignee: Ninth Peoples Hospital Shanghai Jiaotong University School of Medicine
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2022-02-08
Anticipated expiration: 2031-09-22

Abstract

The utility model provides a urethroscope-based urethral dilator which is characterized by comprising a urethroscope and a dilator body, wherein the urethroscope is provided with a through working channel for the dilator body to pass through; the dilator body comprises a guide wire, a dilating airbag connected with the rear end of the guide wire, a long tubular catheter communicated with the rear end of the dilating airbag and an injector interface communicated with the rear end of the catheter, wherein the injector interface is used for being connected with an injector, and the injector injects water or gas into the dilating airbag through the catheter to expand the dilating airbag; the dilator body can be inserted into a working channel of the urethroscope, and the dilation balloon of the dilator body can extend out of the urethroscope to dilate the narrow part of the urethra. The urethroscope-based urethral dilator provided by the utility model can accurately dilate a urethral stricture under visual conditions, is more intuitive, safe and effective, and greatly reduces the damage to the urethra in the operation.

Description

Urethroscope-based urethral dilator

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a urethroscope-based urethral dilator.

Background

Urethral stricture is one of the common diseases of urology surgery, is mostly seen in men and is classified into congenital, inflammatory, traumatic and iatrogenic. The narrow proximal urethra is expanded due to long-term urethral stricture, the bladder is compensatory and hypertrophic, and a small house trabecula and a false diverticulum are generated; in the later stage, the bladder is not fully compensated, the residual urine is increased, and urinary retention, overflow urinary incontinence, even reflux of the vesicoureteral and renal function impairment can occur. Urinary stenosis is associated with urinary infection and calculi, and therefore, it must be treated.

Currently, urethral dilation is generally adopted for treating mild urethral stricture. The traditional urethra dilator is firstly put in a soft guide wire through the urethra, and a metal bougie from small to large is put in the guide wire for dilation. Traditional metal bougie urethra expander mainly relies on operator's hand to touch heart meeting, follows to feel and walks, has blindness nature, forms the urethra damage easily, carries out urethra bougie expansion to complicated urethral stenosis more difficult heavily.

Therefore, how to provide a visual urethral dilator to reduce the urethral injury becomes a technical problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a urethroscope-based urethral dilator which can accurately dilate the narrow position of the urethra under a visual condition and is more intuitive, safe and effective.

In order to achieve the above object, the present invention provides a urethroscope-based urethral dilator, comprising a urethroscope and a dilator body, wherein the urethroscope has a through working channel for the dilator body to pass through; the dilator body comprises a guide wire, a dilating airbag connected with the rear end of the guide wire, a long tubular catheter communicated with the rear end of the dilating airbag and an injector interface communicated with the rear end of the catheter, wherein the injector interface is used for being connected with an injector, and the injector injects water or gas into the dilating airbag through the catheter to expand the dilating airbag; the dilator body can be inserted into a working channel of the urethroscope, and the dilation balloon of the dilator body can extend out of the urethroscope to dilate the narrow part of the urethra.

Preferably, the guide wire has a length of 5 mm.

Preferably, the maximum diameter of the dilatation balloon is 28 Fr.

Preferably, the length of the dilatation balloon is 5-30 mm.

Preferably, the conduit is 300mm in length and 2.6mm in diameter.

The utility model has the following beneficial effects:

when in dilation operation, the urethroscope is firstly placed into the urethra of a patient, the urethral stricture part can be found accurately under the visual condition, and the urethroscope is placed near the urethral stricture part; then the dilator body is inserted into a working channel of the urethroscope, and a guide wire and a dilation balloon at the front end of the dilator body extend out of the urethroscope, so that the guide wire can accurately guide the dilation balloon to a urethral stricture part under a visual condition; finally, water or gas is injected into the expansion air bag through the injector to expand the expansion air bag so as to expand the narrow part of the urethra.

In summary, compared with the prior metal bougie urethra dilator, the urethra dilator based on the urethroscope provided by the utility model can dilate the narrow part of the urethra under the visual condition, is more visual, safe and effective, and greatly reduces the damage to the urethra in the operation. In addition, the expansion amount of the expansion air bag can be adjusted according to the injection amount of water or air, so that the expansion size of the expansion air bag can be adapted to different requirements, compared with the original metal bougie urethral dilator, the metal bougie from small to large does not need to be replaced, and the pain of a patient is greatly relieved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic view of the utility model in an unexpanded state of the dilation balloon of the dilator body;

FIG. 2 is a schematic view of the inflatable state of the inflatable balloon of the dilator body of the present invention;

FIG. 3 is a schematic view of the configuration of a urethroscope of the present invention;

reference numerals

1-dilator body; 11-a guide wire; 12-dilation balloon; 13-a catheter; 14-an injector interface;

2-urethroscope; 21-working channel.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more clearly understood, the following further detailed description of the embodiments of the present application with reference to the drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not an exhaustive list of all the embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Referring to fig. 1 to 3, fig. 1 is a schematic view illustrating an unexpanded state of the expanding balloon of the expander body according to the present invention; FIG. 2 is a schematic view of the inflatable state of the inflatable balloon of the dilator body of the present invention; figure 3 is a schematic view of the configuration of the urethroscope of the present invention.

The utility model discloses a urethroscope-based urethral dilator, which comprises a urethroscope 2 and a dilator body 1, wherein the urethroscope 2 is provided with a through working channel 21 for the dilator body 1 to pass through. The dilator body comprises a guide wire 11, a dilating balloon 12 connected with the rear end of the guide wire 11, a long tubular catheter 13 communicated with the rear end of the dilating balloon 12 and an injector interface 14 communicated with the rear end of the catheter 13, wherein the injector interface 14 is used for being connected with an injector (not shown in the figure), and the injector injects water or gas into the dilating balloon 13 through the catheter 12 to expand the dilating balloon 12. The whole expander body 1 can be inserted into the working channel 21 of the urethroscope 2, and the expanding air bag 12 at the front end of the expander body can extend out of the urethroscope 2 to expand the urethral stricture.

When in an expansion operation, the urethroscope 2 is firstly placed into the urethra of a patient, the urethral stricture part can be found more accurately under the visual condition, and the urethroscope 2 is placed near the urethral stricture part; then the dilator body 1 is inserted into a working channel 21 of the urethroscope, and the guide wire 11 and the expansion air bag 12 at the front end of the dilator body extend out of the urethroscope 2, and under the visible condition, the guide wire 11 can accurately guide the expansion air bag 12 to the narrow part of the urethroscope; finally, water or gas is injected into the expansion air sac 12 through a syringe to expand the expansion air sac 12 so as to accurately expand the narrow part of the urethra.

In summary, compared with the prior metal bougie urethra dilator, the urethra dilator based on the urethroscope provided by the utility model can dilate the narrow part of the urethra under the visual condition, is more visual, safe and effective, and greatly reduces the damage to the urethra in the operation. In addition, the expansion amount of the expansion air bag 12 can be adjusted according to the injection amount of water or air, so that the expansion size of the urethra dilator can be adapted to different requirements, compared with the prior metal bougie urethra dilator, the urethra dilator does not need to replace the metal bougie from small to large, and the pain of a patient is greatly relieved.

Further, the length of the guide wire 11 may be set to 5 mm.

In a further aspect, the dilating balloon 12 has a maximum diameter of 28Fr, where Fr represents a unit of medical equipment.

Further, the length of the dilatation balloon 12 can be set to 5-30 mm.

In a further embodiment, the length of the conduit 13 may be set to 300mm and the diameter may be set to 2.6 mm.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A urethroscope-based urethral dilator is characterized by comprising a urethroscope and a dilator body, wherein the urethroscope is provided with a through working channel for the dilator body to pass through; the dilator body comprises a guide wire, a dilating airbag connected with the rear end of the guide wire, a long tubular catheter communicated with the rear end of the dilating airbag and an injector interface communicated with the rear end of the catheter, wherein the injector interface is used for being connected with an injector, and the injector injects water or gas into the dilating airbag through the catheter to expand the dilating airbag; the dilator body can be inserted into a working channel of the urethroscope, and the dilation balloon of the dilator body can extend out of the urethroscope to dilate the narrow part of the urethra.

2. A urethroscope-based urethral dilator according to claim 1 in which the guidewire is 5mm in length.

3. A urethroscope-based urethral dilator according to claim 2 in which the maximum diameter of the dilating balloon is 28 Fr.

4. A urethroscope-based urethral dilator according to claim 3 in which the length of the dilating balloon is 5-30 mm.

5. A urethroscope-based urethral dilator according to claim 4 in which the catheter is 300mm in length and 2.6mm in diameter.