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Ammonia sensor

A technology of ammonia sensor and weight, applied in the field of ammonia sensor

Pending Publication Date: 2021-07-16
MBI WALES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, these sensors are also prone to false positive results

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Example 1 - Sensor Silicone Production Scheme

[0072] ingredient list

[0073] · V46 - Vinyl terminated polydimethylsiloxane (MW = 117,000) - (Polymer A)

[0074] V31 - Vinyl terminated polydimethylsiloxane (MW = 28,000) - (Polymer B)

[0075] V21 - Vinyl terminated polydimethylsiloxane (MW = 6,000) - (Polymer C)

[0076] Cabosil M5 untreated fumed silica (colloidal silica) (BET surface area 200m 2 g, particle size 0.2-0.3 microns) platinum-divinyltetramethyldisiloxane complex (platinum RTV)

[0077] ·Cetyltrimethylammonium bromide (CTAB)

[0078] ·Bromothymol Blue Sodium Salt Standard F(BTB)

[0079] Trimethylsiloxy-terminated methylhydrogensiloxane-dimethylsiloxane copolymer (Xlinker)

[0080] Formulation and Technology

[0081] Silicone matrix

[0082] basic formula 1500g batch 3000g batch Polymer A – 50.94% 764.1g 1528.2g Polymer B – 42.36% 635.4g 1270.8g Polymer C – 3.36% 50.4g 100.8g Cabosil (M5) – 3.30% 49...

Embodiment 2

[0111] Example 2-Study on the specific reactivity of the sensor to ammonia solution

[0112] The response of the sensor in ammonia solution was compared to the response of the sensor in sodium hydroxide solution and high pH buffer

[0113] method

[0114] • Formulate the sensor silicone according to Example 1 into 13mm x 13mm strips.

[0115] • Ammonia (30% in distilled water, pH 9.25) solution, sodium hydroxide (30% in distilled water, pH 9.5) solution and pre-made buffer solution (pH 9) were used in this study.

[0116] • Put 5 mL of each solution into a glass bottle, place the sensor strip inside, and seal it carefully.

[0117] • Place the FloSense cartridge on top of the glass bottle so that the tip of the cartridge is just above the solution (see Figure 1(b)).

[0118] The FloSense cartridge is a specially designed chamber that holds two strips of ammonia sensor silicone and is designed to fit between the catheter and drainage bag.

[0119] Observations for any c...

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Abstract

The present invention relates to an ammonia sensor for use in a catheter drainage system. The present invention also relates to a catheter, drainage bag or connection unit comprising the ammonia sensor of the present invention, methods of using the ammonia sensor and methods of making the ammonia sensor.

Description

technical field [0001] The invention relates to an ammonia sensor used in a catheter drainage system. The invention also relates to a catheter, a drainage bag or a connection unit comprising the ammonia sensor of the invention, a method of using the ammonia sensor and a method of manufacturing the ammonia sensor. Background technique [0002] Care of many elderly and disabled patients undergoing long-term indwelling bladder catheterization is complicated by catheter fouling and obstruction. The problem is unpredictable and due to sudden blockage of the catheter, at any time of night or day, community nurses may be called upon by unwell patients due to urinary retention or incontinence. Current methods of controlling scaling are ineffective, and often replacement catheters block repeatedly, and patients gain a reputation as "occluders." [0003] Scaling is caused by infection of the cannulated urethra with urease-producing organisms, particularly Proteus mirabilis. Bacteri...

Claims

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Application Information

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IPC IPC(8): G01N33/84A61B5/145A61B5/00
CPCG01N33/84A61B5/14539A61B5/6852A61B2503/08A61B2505/07A61B2560/0276A61B5/207A61B5/202A61B5/14546A61B5/4848A61F5/44
Inventor 马克·沃特斯
Owner MBI WALES LTD
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