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Stenosis dilated catheter

A urinary catheter, expansion type technology, applied in the direction of catheter, dilator, balloon catheter, etc., to achieve the effect of avoiding shear damage, reliable treatment, and improved reliability

Active Publication Date: 2018-02-16
JW ICU MEDICAL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 2. Apply lubricating oil or lubricating coating on the outer surface of the urinary catheter, and it is almost ineffective for urethral stricture when used in isolation

Method used

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  • Stenosis dilated catheter
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as Figure 2a , 2b , 3, and 4, a narrow and dilated urinary catheter is a hollow main tube made of solid material with an inner surface 11 and an outer surface 12. The hollow of the tube is the catheter lumen 10, including the catheter The head 13 of the bladder 0, the tail 14 staying outside the body, and the middle part 15 connecting the head 13 and the tail 14, the head is provided with a urine inlet 130, and the tail is provided with a urine outlet 140; the bladder in the bladder cavity 00 is fixed The balloon 132, the filling side branch 142 of the bladder fixation balloon 132, the filling side branch 142 has an external opening 1322, and the external opening 1322 of the filling side branch 142 can be closed by a one-way valve 2 or a resealable elastic body after puncture, The difference from the existing clinical urinary catheters is that the outer surface of the top 131 of the catheter head is connected with a nipple-like flexible and hollow thin section 16. T...

Embodiment 2

[0052] Such as Figure 2c As shown, the tip 131 of the catheter head is biased to one side; the thin section 16 is structurally a functional extension of the tip 131 of the catheter head, and the direction of the extension can be along the catheter head 13 The direction of the central axis can also be parallel to the central axis direction, or it can extend at a certain angle to the central axis direction, and sometimes the thin segment 16 that extends in a biased direction is more likely to enter the urethra at the turn; this embodiment and embodiment 1 The difference is that the tip 131 of the catheter head is biased to one side, and the thin section 16 connected to it is also biased synchronously.

Embodiment 3

[0054] Such as Figure 5 As shown, the power of the present invention to fill and expand the thin segment comes from an elastic bladder 17, which is located on the thin filling side branch 143 of the tail 14 of the urinary catheter. The outer opening 1313 of the inner cavity of the thin segment is opened in In the inner cavity of the elastic bladder 170, the inner cavity of the elastic bladder 170 is only in communication with the inner cavity passage 1312 of the thin section, and the gas in it can be filled into the inner cavity 160 of the thin section due to the external pressure of the elastic bladder 17, and the thin section 16 expands and releases After pressure, the air filled into the inner cavity 160 of the thin section returns to the inner cavity 170 of the elastic bladder body 17 due to the elastic restoring force of the wall of the elastic bladder body 17, and the thin section 16 returns to its original shape; the inner cavity 170 of the elastic bladder can also be fil...

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Abstract

An operation process of catheter placement will seriously stimulate a urethra and a bladder clinically, physiological and pathological stenosis and curve of the urethra of a human body will make it harder to place the catheter and will aggravate damage to a lower urinary tract in a placement process, and damage to the lower urinary tract will induce or aggravate lower urinary tract infection, which will further affect functions of the lower urinary tract or organs of the whole body. Methods for treating urethrostenosis currently include: 1, a high strength head or metallic probe bar or guide wire is used to enhance an external force to push the catheter, which will cause damage to an inner membrane of the urinary tract and even infection; 2, an outer surface of the urinary tract is paintedwith a lubricating oil or a lubricating coating, but the this method is not useful in urethrostenosis while being used independently. The invention provides a stenosis dilated catheter; and when thestenosis dilated catheter is placed, an expandable portion of a fin section of the head is filled, the urinary tract is painted with a lubricating agent, the placement successful rate is improved, andthe damage and infection risk is minimized.

Description

Technical field [0001] The invention relates to a narrow and expanded urinary catheter, which belongs to the technical field of medical devices. Background technique [0002] The urinary catheter is the most common medical device in clinical practice. After being inserted into the human body from the urethra, the urine can be drained from the bladder to the body; it can be taken out after a single drainage of urine, or it can be indwelled for multiple drainage. [0003] However, the operation of catheter placement itself is a serious irritation to the urethra and bladder. In addition, the physiological and pathological stenosis and curvature of the human urethra itself will increase the difficulty of catheter placement, and add the lower part of the replacement process. Urinary tract injury, and lower urinary tract injury can induce or aggravate lower urinary tract infection, further affecting the lower urinary tract or even systemic organ function. [0004] Although the female uret...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/10A61M29/04
CPCA61M25/0026A61M25/0043A61M25/0068A61M25/10A61M29/02A61M2025/0057A61M2202/0496A61M2210/1089A61M2202/0014A61M25/0017A61M25/1011A61M2025/1093A61M25/10183
Inventor 董东生
Owner JW ICU MEDICAL LTD
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