Urethral dilator

A technology of urethral expansion and expansion sheet, which is applied in the field of urethral dilators, can solve the problems of mucosal injury around the urethra and easy recurrence of urethral strictures, and achieve the effect of less recurrence and less contusion

Pending Publication Date: 2020-07-17
BEIJING JISHUITAN HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a urethral dilator, which can change the direction of force when dilating the urethra, so as to solve the problems of damage to the entire urethra and its surrounding mucous membranes caused by the existing urethral dilating methods, and easy recurrence of urethral strictures.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1 provides a urethral dilator, the structure of which will be described in detail below.

[0027] refer to figure 1 , Figure 4 and Figure 7 , the urethral dilator includes an inner core 1, a sleeve 2, an expansion cage 3, a protective sheath 4 and an operating handle 5,

[0028] The rear end of the inner core 1 is passed through the operating handle 5, the expansion cage 3 is arranged on the front end of the inner core 1, the sleeve 2 is sleeved on the outside of the inner core 1 between the expansion cage 3 and the handle barrel 51, and the expansion cage The rear end of 3 is fixedly connected with the front end of casing 2;

[0029] The protective sheath 4 is made of plastic and rubber, and is set on the outside of the expansion cage 3 and the casing 2 to play a protective role;

[0030] The operating handle 5 includes a handle barrel 51, a push button 52 and a knob 53, the push button 52 is arranged inside the handle barrel 51 and the push button 52 ...

Embodiment 2

[0038] On the basis of embodiment 1, embodiment 2 adds a real-time force measuring device for real-time testing of the expansion force of the expansion cage 3 to the urethra during the expansion process, and the specific connection relationship is as follows;

[0039] refer to Figure 8 , the real-time force measuring device includes at least one induction sheet 61, a pressure display screen 62, a pressure reader and electronics, wherein the induction sheet 61 is a miniature induction sheet, which is arranged on the expansion sheet 32, and the inside of the handle barrel 51 is provided with a pressure sensor. Reader and electronics, the surface of the handle barrel 51 is provided with a pressure display screen 62, and the sensing sheet 61 and the pressure reader and between the pressure reader and the pressure display screen 62 are connected by data lines. The electronics power the pressure reader and pressure display 62 therein.

[0040] Preferably, each expansion piece 32 i...

Embodiment 3

[0042] Embodiment 3 provides a method for dilating the urethra, using the urethral dilator provided in Embodiment 1, the method for dilating the urethra comprises the following steps:

[0043] Step S1: Push the urethral dilator along the urethra until the front end reaches the stricture of the urethra;

[0044] Step S2: Push the push button 52 backward to drive the protective sheath 4 back until the expansion cage 3 is exposed;

[0045] Step S3: Turn the knob 53, the inner core 1 protrudes from the rear end of the handle barrel 51, and at the same time drives the front end of the expansion cage 3 to shrink back, prompting the expansion cage 3 to expand from the front to the rear to gradually form a bulge;

[0046]Step S4: During the uplifting process of the expansion cage 3, the urethral stricture is gradually squeezed from the front to the rear to expand the urethral stricture.

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Abstract

The invention discloses a urethral dilator. The urethral dilator comprises an inner core, a sleeve, a dilating cage, a protective sheath and an operating handle, the rear end of the inner core is arranged in the operating handle in a penetrating mode, the dilating cage is arranged at the front end of the inner core, the sleeve is arranged on the outer side of the inner core between the dilating cage and a handle cylinder in a sleeving mode, and the protective sheath is arranged on the outer side of the dilating cage and the sleeve; the operating handle comprises the handle cylinder, a push-pull button and a knob, the push-pull button is arranged in the handle cylinder and is fixedly connected to the protective sheath; and the rear end part of the inner core is in threaded connection with the knob. According to the urethral dilator disclosed by the invention, expansion force is only applied to the urethral stenosis section, and normal urethra except the urethral stenosis section cannotbe damaged; the urethral dilator not only directly acts on the inner wall of the urethra to dilate the urethra, but also transversely penetrates the whole of the urethral stenosis section from back tofront, and the expanded urethral stenosis section is not prone to relapse.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a urethral dilator. Background technique [0002] Male urethral stricture is a common disease in urology, and urethral dilatation is a special operation for urethral stricture. The current urethral dilation surgery mostly uses urethral probes to expand the urethra, and there are the following problems: First, the urethral probes used to expand the urethra are mostly a special metal bougie. Damage to the normal urethra beyond the stricture can also occur. In addition, the existing urethral expansion method mainly uses the urethral probe to expand the urethral stricture from the rear to the front along the urethra to achieve the effect of dilating the urethra. Although this method of applying force from the back to the front can force the urethra to , but at the same time violently contus the urethral mucosa, resulting in recurrence of urethral stricture. Contents of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M29/04
CPCA61M29/02A61M2205/3331A61M2210/1078A61M2210/005
Inventor 翟建坡刘振华黄广林满立波田伟
Owner BEIJING JISHUITAN HOSPITAL
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