DE7032687U - URO RHEOMANOMETER. - Google Patents

Description

The Nriusrum lisrjt the task? Ijf runrifi. an intraureteral To create a probe that allows the simultaneous measurement of the temporal Urinary flow and momentary through the peristaltic induced pressure loss in the human Ureter allows.

With the known probes it was previously only possible to use one to determine local pressure. These measurement results are sufficient not enough for a thorough diagnosis.

The innovation is that one of several hollow cylindrical parts inserted into one another and formed on one Hose attached body is provided on his Tip an element with a negative temperature coefficient

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Advantageously, it is provided, the body rfafl from a strömungsgünstiqpn parabo1oidartίςβη Sondenknpf, a hollow-cylindrical central part and EMEM hollow zy 1 indrischen holder beäteht, möG i - -ρϊ Sr itzB de- ~ 'innrenlcupreä in a spherical Aur ·) nohfiun a k uqp 1 frirm ^; ηη ^ NTC element is embedded in an insulating cast iron and that in the middle part in corresponding rivets z-uei membranes are preferably arranged made of gold foil, on the insides of which strain gauges are glued.

In the drawing i =; t an embodiment of the innovation is reproduced, and show to / ar:

1 shows an axial longitudinal section and FIG. 2 shows a side view of the probe.

The uro-rheomanometer according to the innovation essentially consists made of three hollow cylindrical ones inserted into one another

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T ei ilen 1-3, to which a hose is ά lossen anqesch. These parts 1-3 are a probe head 1, a middle part 2 and a holder 7;

The probe head 1 is designed to be favorable in terms of flow technology Rotary body whose rearward part δ zapfenartiq formed and in ρϊπθγ pnttrennenden Ausnehmunq of (YIi ttel part 3 is included.

In the tip of the probe head 1 has a spherical recess 7 is provided, into which a spherical element with a negative Tempereturkngf fi 7 \ agreements referred 8. NTC Eiement called, is embedded in insulating GieGharz. This NTC element ί is connected via electrical supply and return wires 9, which extend axially through the hollow probe and the hose A, to a display or recording device (not shown).

This NTC element 8 shows the change in electrical resistance and thus the speed of the urine flow in the Ureter on.

The lYlitteltei 1 2 consists of two hollow cylindrical half-shells and usually diametrically opposite longitudinal grooves or incisions 10 rounded at their ends those made of gold foil or the like membranes

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IJ of reasonable strength are attached. On the inside of the membranes 11, metallic foil or semiconductor strain gauges 12 are glued and connected to electrical supply and return wires 13, which also lead axially through the probe and the hose 4 to display and recording devices.

The rear end of the middle part 2 has a recess 14 in which the pin-shaped front end of the holder 3 is received.

The whole probe has a diameter of approx. 1.5 mm (5 Cherier). For this reason, from a medical point of view, there is no significant congestion in the urinary flow.

Normal atmospheric pressure prevails within the middle part 2. When the liquid pressure acts on the membranes from the outside, the membranes 11 and with them the strain gauges 12 expand. The electrical resistance of the strain gauges changes according to the pressure load Pressure range can be measured with very good sensitivity.

The uro-rheomanometer according to the innovation allows the very precise simultaneous measurement of the speed of the urinary

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Claims (2)

- 6 protection claims 1. Uro-Rhenmanometer, dadurchq 3 ke π η 7 ejch π 9 t that an au? several nested high 1 ζylindrisehen parts (1-3) formed and connected to a hose (4) is provided, which at its tip an element with a negative / em temperature coefficient (NTC element) (8) and in its middle part ( 2) has a pressure measuring device (11, 17), the electrical supply and return lines (9, 13) of which are routed through the interior of the body (1-3) and the hose (ä) to electrical display devices. 2. Un-rheomanometer according to claim 1, characterized in that difl risr body consists of a flow-tight parabola-like probe head (l), a middle part (2) formed from two hollow cylindrical shells and a height 1 cylindrical holder (3) that is in the tip of the probe μ-opfos (ι) in a spherical recess (7) a spherical NTC-.Elp ^ nt (8) is embedded in insulating Giefiharz and daO in the middle part (2) in corresponding grooves (] H) z ^ ei Membranes (11) v / or-7in <: »'Pi'n ¹ Ir TjC. 1 df η 1 i π, ^ η> · <- - r ^. ^ ■■>. · ■ ^ ind, on whose 7032687 17.1Z 70 Inner sides DR ^ nmeflstrsifen (12 ^ ^ ufiekieben are. For Dr.-phil. Alexander Maumann Dr. med. l'olfgang Lutzeyer Dr.-med. H ^ nsjörg Melchior Dr.-Ing. Krishna Simhan Dipl.-Ing. 'J / ol / rgang K. Rauh PATENT ADVOCATE 703268717.12 70