WO1986003957A1 - Installation pour mesurer la tension - Google Patents
Installation pour mesurer la tension Download PDFInfo
- Publication number
- WO1986003957A1 WO1986003957A1 PCT/DE1986/000004 DE8600004W WO8603957A1 WO 1986003957 A1 WO1986003957 A1 WO 1986003957A1 DE 8600004 W DE8600004 W DE 8600004W WO 8603957 A1 WO8603957 A1 WO 8603957A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- balloon
- measurement
- catheter
- piston pump
- Prior art date
Links
- 238000009530 blood pressure measurement Methods 0.000 title claims description 9
- 238000009434 installation Methods 0.000 title 1
- 241001465754 Metazoa Species 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 6
- 238000001802 infusion Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 description 9
- 210000000038 chest Anatomy 0.000 description 4
- 239000003814 drug Substances 0.000 description 3
- 210000003462 vein Anatomy 0.000 description 3
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 210000000709 aorta Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 238000010241 blood sampling Methods 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 210000005242 cardiac chamber Anatomy 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 210000000936 intestine Anatomy 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000003715 nutritional status Nutrition 0.000 description 1
- 230000004088 pulmonary circulation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 210000001562 sternum Anatomy 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/03—Measuring fluid pressure within the body other than blood pressure, e.g. cerebral pressure ; Measuring pressure in body tissues or organs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/0215—Measuring pressure in heart or blood vessels by means inserted into the body
- A61B5/02152—Measuring pressure in heart or blood vessels by means inserted into the body specially adapted for venous pressure
Definitions
- the invention relates to a device for measuring the pressure in body cavities and vessels of the human and animal body and in other closed systems.
- the pressure in the heart chambers is important for assessing the function of the heart and its valves.
- the pressure in the vena cava the so-called central venous pressure (ZVD)
- ZVD central venous pressure
- the measurement of the pressure in the brain is used for various diseases that are associated with an increase in this pressure.
- the measurement of pressure in body cavities such as the stomach and the intestine has gained 5 importance in research.
- ⁇ 5 manometers by simply measuring the liquid level in the catheter or by connecting pressure transducers. This method is used in particular to measure the central venous pressure, ie the pressure in the vena cava.
- the catheter is usually inserted by puncturing (puncture) an easily accessible vein in the neck or collarbone area or the elbow, either with a steel cannula through which the catheter can be advanced to the appropriate measuring point, or in the manner of the Seldinger technique.
- a guide wire a so-called stylet, is first inserted into the vein. The catheter can then be advanced over this guide wire after the cannula has been removed. 5
- This catheter is used both for pressure measurement and for introducing infusions and withdrawing blood.
- the f ⁇ roblem in this method that "due to the weight of the liquid in the tube, the measurement of the pressure in o height of the measuring location, that is exactly the catheter tip must be carried out.
- no Imaging methods are conceivable, but they are time-consuming and financially too time-consuming.
- the 5 most commonly used procedure is based on the assumption that there is a certain relationship between the diameter of the chest on the one hand and the position of the vena cava on the other.
- the diameter of the chest becomes its
- the sternum / back extension is measured with a caliper, o the position of the vena cava is then determined at 3/5 of the diameter, measured from the back, but this formula does not take into account natural anatomical variations, which depend on size, nutritional status and the Depend on the gender of the patient, insurmountable obstacle e result in 5 extreme cases, such as chest deformities.
- the location of the vena cava the position of the catheter tip, which is actually to be determined, is not necessarily known. Because the vena cava has an average diameter of 3 to 4 cm. It remains completely unknown whether the catheter tip in the vessel lies more towards the chest or more towards the back.
- the dimension of the measurement error becomes clear: it lies in the same order of magnitude 15 as the pressures to be measured themselves. the relative error can easily exceed 100 or 200 percent or more.
- Balloon is only partially filled, i.e. none in its wall Tensile stresses exist, the pressure inside is equal to the pressure on the outside. Pressure is transferred to a pressure transducer through a gas or air filled hose connected to the balloon. Since the pressure transducer can be attached outside the body, it is easily possible to apply atmospheric pressure to it regularly and thus to compensate for the drift. The low weight of the pressure-transmitting gas does not cause a hydrostatic error. The problem with this method is that the gas disappears from the measuring system due to leaks in the measuring system and due to diffusion through the tube and balloon wall. In order to avoid measurement errors resulting from this, the balloon must be vacuumed regularly and then filled with a precise amount of gas.
- the invention has for its object to provide a device for measuring the pressure inside the human or animal body, which is easy to use, o does not represent a burden on the body, and which is not affected by hydrostatic or zero drift caused by measurement errors .
- a balloon the thin wall material 5 of which has a high modulus of elasticity, is in the region of the
- Balloon does not exceed the tip and the balloon
- Catheter is connected to the balloon, it is used to transfer the pressure and to fill and empty the
- the other lumen can be used for infusions and
- the balloon can be evacuated
- Density of states are applied to the catheter, and as will be *> ie conventional single-lumen catheter introduced through an inserted into a vessel cannula (. It may also according to the so-called Seldinger technique through a stylet directly in the vessel to be pushed.
- the balloon is only partially filled with a gaseous medium, so that no tensile stresses act in its wall. The pressure inside the balloon is therefore equal to the pressure on the outside.
- the balloon is connected to a system which is closed at the measurement time but open at the adjustment time and which is also connected to that of a pressure transducer.
- the partial filling of the balloon which is important for the reliable transmission, is controlled by one or more pistons or by one or more pistons in connection with one or more valves.
- the balloon 1 shows an embodiment of the catheter.
- the balloon 1 is attached to the end of the catheter 2, it is connected to a lumen 5 of the catheter, while the other lumen ends openly.
- both lumens are provided with connecting elements 3 and 4.
- Fig.?. shows an embodiment of the invention in which the emptying and filling of the balloon is carried out by the combination of a piston pump with a valve.
- the balloon 1 at the end of the double catheter 2 is connected to the piston pump 6 via the one lumen of the catheter and the connecting tube 5.
- a pressure sensor 7 is connected to the system 5.
- the system can be opened / opened to the environment via valve 8.
- the filling process is as follows: The valve 3 is opened so that the system is connected to the environment. Now the zero point is adjusted. For this purpose, the reference value for the o pressure sensor is obtained. Then the piston pump 6 is moved to a reference point. Now valve 8 is closed. The piston pump 6 now sucks the balloon 1 empty.
- the state of "empty” is characterized by a certain negative pressure which is peculiar to the size of the balloon. Then, with the piston pump 6, a certain volume that is peculiar to the size of the balloon is pumped into the balloon. Now with the pressure sensor 7 measured the pressure.
- the gas volume with which the balloon is filled is not constant, 5 but is dependent on the pressure to be measured.
- the piston pump can be separated from the system balloon-catheter pressure sensor by a second valve 9 during the measurement. This improves the dynamics of the system.
- the balloon is filled and emptied using a combination of two piston pumps.
- Fig. 3 shows a schematic of the arrangement.
- balloon 1 at the end of the double-lumen catheter 2 is connected via one lumen of the catheter and the connecting tube 5 to the piston pump 6.
- a pressure sensor 7 is connected to the system.
- the inside of the piston pump 6 is through the bore 15 in the cylinder wall of the piston pump 6 with the
- the piston pump 6 is connected to the piston pump 12 by the connecting hose 11.
- the filling process takes place as follows: The piston pump 6 is brought into its end position 13. Now the system is connected to the environment through the bore 10 and
- connection between the two piston pumps mentioned is made through a bore in the cylinder wall of the first piston pump.
- Fig. 4 shows a schematic of the arrangement.
- the connection between piston pump 6 and piston pump 12 is made here the bore 15 in the cylinder wall of the piston pump 6. Now, while the balloon is being filled by the piston pump 6, the piston pump 12 is separated from the system, which leads to an improvement in the dynamics.
- the system for emptying and filling, as well as the pressure transducer are arranged on a circuit board which is provided with a connecting plug, so that the complete unit can be installed like an electronic circuit board.
- recesses for the individual components are arranged in the circuit board. 5
- the plat ne is produced by deep drawing.
- a plurality of eallons are attached to an o multi-lumen catheter, each of the balloons being connected to its own device for pressure measurement and for emptying and filling by a lumen of the catheter.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Physics & Mathematics (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Public Health (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Physiology (AREA)
- Vascular Medicine (AREA)
- Hematology (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
Pour la mesure de la tension à l'intérieur du corps humain ou du corps d'un animal, la tension est transmise à un capteur de tension (7) au moyen d'un ballon (1) rempli seulement partiellement d'un milieu gazeux, qui est appliqué à un cathéter (2) double ou à lumens multiples. Le remplissage partiel nécessaire pour transmission fiable de la tension est réalisé par une ou plusieurs pompes à pistons (6, 12) ou par une combinaison d'une ou de plusieurs pompes à pistons et d'une ou plusieurs valves (8, 9).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19853500822 DE3500822A1 (de) | 1985-01-10 | 1985-01-10 | Einrichtung zur druckmessung |
DEP3500822.9 | 1985-01-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1986003957A1 true WO1986003957A1 (fr) | 1986-07-17 |
Family
ID=6259670
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1986/000004 WO1986003957A1 (fr) | 1985-01-10 | 1986-01-10 | Installation pour mesurer la tension |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0208746A1 (fr) |
DE (1) | DE3500822A1 (fr) |
WO (1) | WO1986003957A1 (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996004846A1 (fr) | 1994-08-08 | 1996-02-22 | Innerspace, Inc. | Catheters de mesure de pression a colonne de gaz |
US6673022B1 (en) | 1999-08-20 | 2004-01-06 | Innerspace Medical, Inc. | Gas column pressure monitoring catheters |
WO2004045404A1 (fr) * | 2002-11-19 | 2004-06-03 | Rhinometrics A/S | Dispositif et procede de mesure de cavites corporelles |
EP1892010A1 (fr) * | 2006-08-25 | 2008-02-27 | Pulsion Medical Systems AG | Cathéter pour l'alimentation entérale et dispositif pour déterminer la pression intraabdominale |
DE102021114117A1 (de) | 2021-06-01 | 2022-12-01 | Isar-M Gmbh | Drucküberwachungseinrichtung und Verfahren zur Inbetriebnahme einer solchen Einrichtung |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5833619A (en) * | 1997-05-15 | 1998-11-10 | L. Vad Technology, Inc. | External blood pressure sensor apparatus and method |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2160287A1 (de) * | 1971-12-04 | 1973-06-07 | Hellige & Co Gmbh F | Vorrichtung zur bestimmung der stressinkontinenz durch gleichzeitige messung und/oder registrierung des intravesicalen und des intraurethralen druckes |
US3897682A (en) * | 1973-11-15 | 1975-08-05 | Heyer Schulte Corp | Cystometer system and pressure transducer |
US4023562A (en) * | 1975-09-02 | 1977-05-17 | Case Western Reserve University | Miniature pressure transducer for medical use and assembly method |
US4217911A (en) * | 1978-10-27 | 1980-08-19 | The Kendall Company | Cystometry system |
WO1981002664A1 (fr) * | 1980-03-28 | 1981-10-01 | University Patents Inc | Dispositif et procede ameliores de controle oesophagien d'impulsion cardiaque |
GB2075840A (en) * | 1980-05-20 | 1981-11-25 | Craig Med Prod Ltd | A device for developing control of sphincter-type muscles |
DE3221115A1 (de) * | 1982-06-04 | 1983-12-08 | Peter Dipl.-Ing. 7251 Friolzheim Kinast | Vorrichtung zur messung der kontraktionskraft von ringmuskeln |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1333378A (en) * | 1969-10-07 | 1973-10-10 | Nat Res Dev | Pressure measuremnet |
GB1436313A (en) * | 1972-09-13 | 1976-05-19 | Nat Res Dev | Method and apparatus for measuring pressure |
US4114603A (en) * | 1976-08-06 | 1978-09-19 | Wilkinson Harold A | Intracranial pressure monitoring catheter |
AU510265B2 (en) * | 1976-09-27 | 1980-06-19 | Hittman Corporation | Pressure sensor for animal bodies |
DE2811859A1 (de) * | 1978-03-17 | 1979-09-27 | Siemens Ag | Druckwandler |
US4428383A (en) * | 1981-10-13 | 1984-01-31 | American Hospital Supply Corporation | Manifold for monitoring hemodynamic pressure |
GB2140300B (en) * | 1983-05-24 | 1987-03-04 | Tantrimudalige Anthony Michael | External cardiac compression alarm system |
DE3402553A1 (de) * | 1984-01-26 | 1984-11-08 | Reimer 2974 Krummhörn Wachs | Belastungskontrolle nach beinverletzungen |
-
1985
- 1985-01-10 DE DE19853500822 patent/DE3500822A1/de not_active Ceased
-
1986
- 1986-01-10 WO PCT/DE1986/000004 patent/WO1986003957A1/fr not_active Application Discontinuation
- 1986-01-10 EP EP19860900732 patent/EP0208746A1/fr not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2160287A1 (de) * | 1971-12-04 | 1973-06-07 | Hellige & Co Gmbh F | Vorrichtung zur bestimmung der stressinkontinenz durch gleichzeitige messung und/oder registrierung des intravesicalen und des intraurethralen druckes |
US3897682A (en) * | 1973-11-15 | 1975-08-05 | Heyer Schulte Corp | Cystometer system and pressure transducer |
US4023562A (en) * | 1975-09-02 | 1977-05-17 | Case Western Reserve University | Miniature pressure transducer for medical use and assembly method |
US4217911A (en) * | 1978-10-27 | 1980-08-19 | The Kendall Company | Cystometry system |
WO1981002664A1 (fr) * | 1980-03-28 | 1981-10-01 | University Patents Inc | Dispositif et procede ameliores de controle oesophagien d'impulsion cardiaque |
GB2075840A (en) * | 1980-05-20 | 1981-11-25 | Craig Med Prod Ltd | A device for developing control of sphincter-type muscles |
DE3221115A1 (de) * | 1982-06-04 | 1983-12-08 | Peter Dipl.-Ing. 7251 Friolzheim Kinast | Vorrichtung zur messung der kontraktionskraft von ringmuskeln |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996004846A1 (fr) | 1994-08-08 | 1996-02-22 | Innerspace, Inc. | Catheters de mesure de pression a colonne de gaz |
US5573007A (en) * | 1994-08-08 | 1996-11-12 | Innerspace, Inc. | Gas column pressure monitoring catheters |
EP0774919A1 (fr) * | 1994-08-08 | 1997-05-28 | Innerspace, Inc. | Catheters de mesure de pression a colonne de gaz |
EP0774919A4 (fr) * | 1994-08-08 | 1999-03-03 | Innerspace Inc | Catheters de mesure de pression a colonne de gaz |
US6673022B1 (en) | 1999-08-20 | 2004-01-06 | Innerspace Medical, Inc. | Gas column pressure monitoring catheters |
WO2004045404A1 (fr) * | 2002-11-19 | 2004-06-03 | Rhinometrics A/S | Dispositif et procede de mesure de cavites corporelles |
EP1892010A1 (fr) * | 2006-08-25 | 2008-02-27 | Pulsion Medical Systems AG | Cathéter pour l'alimentation entérale et dispositif pour déterminer la pression intraabdominale |
DE102021114117A1 (de) | 2021-06-01 | 2022-12-01 | Isar-M Gmbh | Drucküberwachungseinrichtung und Verfahren zur Inbetriebnahme einer solchen Einrichtung |
Also Published As
Publication number | Publication date |
---|---|
DE3500822A1 (de) | 1986-07-10 |
EP0208746A1 (fr) | 1987-01-21 |
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