DE4209005A1 - Instrument for removing layer of tissue - is formed by jet of water emitted through specially shaped needle - Google Patents
Instrument for removing layer of tissue - is formed by jet of water emitted through specially shaped needleInfo
- Publication number
- DE4209005A1 DE4209005A1 DE19924209005 DE4209005A DE4209005A1 DE 4209005 A1 DE4209005 A1 DE 4209005A1 DE 19924209005 DE19924209005 DE 19924209005 DE 4209005 A DE4209005 A DE 4209005A DE 4209005 A1 DE4209005 A1 DE 4209005A1
- Authority
- DE
- Germany
- Prior art keywords
- preparation
- preparation system
- needle
- jet
- tip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract 4
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000002360 preparation method Methods 0.000 claims description 24
- 238000005345 coagulation Methods 0.000 claims description 4
- 230000015271 coagulation Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 2
- 239000000203 mixture Substances 0.000 claims 1
- 210000004556 brain Anatomy 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 2
- 210000001951 dura mater Anatomy 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 abstract description 2
- 208000027418 Wounds and injury Diseases 0.000 abstract 1
- 208000014674 injury Diseases 0.000 abstract 1
- 238000001356 surgical procedure Methods 0.000 abstract 1
- 238000013517 stratification Methods 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 3
- 230000000472 traumatic effect Effects 0.000 description 3
- 206010048962 Brain oedema Diseases 0.000 description 2
- 241001269524 Dura Species 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 208000006752 brain edema Diseases 0.000 description 2
- 210000002418 meninge Anatomy 0.000 description 2
- 238000002560 therapeutic procedure Methods 0.000 description 2
- 241000050051 Chelone glabra Species 0.000 description 1
- 206010033892 Paraplegia Diseases 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 210000003625 skull Anatomy 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/32—Surgical cutting instruments
- A61B17/3203—Fluid jet cutting instruments
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
Description
Die Erfindung betrifft ein Präparationssystem, welches zur intraoperativen Präparation von Gewebsschichten zwei v-förmig divergierende, in vertikaler Ebene membranartig gestaltete Flüssigkeitsstrahlen erzeugt. Durch eine entsprechende impulsfrequenz bauen sich die Flächen intermittierend auf und erfahren außerdem eine Ablenkung von innen nach außen, so daß eine Aufspreizung sowohl in horizontaler als auch in vertikaler Ebene erfolgt.The invention relates to a preparation system which for intraoperative preparation of tissue layers two V-shaped divergent, membrane-like in the vertical plane designed liquid jets. By an appropriate the surfaces build up intermittently and also experience a distraction from within outside, so that a spread in both horizontal and also takes place in the vertical plane.
Die Erfindung kann bei allen Präparationsarbeiten eingesetzt werden, die die Trennung von Gewebsschichten zum Ziel haben.The invention can be used in all preparation work that are aimed at the separation of tissue layers.
Insbesondere ist sie zur Schichtung der Dura mater bei therapieresistentem traumatisch bedingtem Hirnödem und bei traumatischen Querschnittslähmungen geeignet.In particular, it contributes to the stratification of the dura mater therapy-resistant traumatic brain edema and traumatic paraplegia suitable.
Die Erfindung kann in der Neurochirurgie, Traumatologie, Orthopädie und zur Trennung von Schichten im technischen Bereich eingesetzt werden.The invention can be used in neurosurgery, traumatology, Orthopedics and for separating layers in technical Area can be used.
Die Behandlung des traumatisch bedingten therapieresistenten Hirnödems erfolgt durch eine Großtrepanation mit Entfernung großer Teile der Schädelkalotte. Man hofft, damit eine Druckschädigung des Gehirns durch die Schädelkapsel zu vermeiden. Die harte Hirnhaut setzt jedoch der weiteren Volumenzunahme des Gehirns Grenzen, da diese nur wenig dehnfähig ist.Treatment of the traumatic therapy-resistant Brain edema is caused by large-scale trepanation with removal large parts of the skullcap. One hopes to get one Brain pressure damage from the skull capsule avoid. The hard meninges, however, set the other Volume increases in the brain limits as these are little is stretchable.
Untersuchungen ergaben, daß eine Schichtung der harten Hirnhaut mit Durchtrennung der oberen Schicht die Dehnfähigkeit erheblich vergrößert. Das Problem bestand darin, ein Gerät zu entwickeln, mit dem diese Operation durchgeführt werden kann.Studies have shown that stratification of the hard Meninges with severing the upper layer the elasticity significantly enlarged. The problem was one Develop device with which to perform this operation can be.
Das erfindungsgemäße Präparationssystem ist zusammengesetzt aus einer Präparationsnadel, einem Magnetventil, einem Impulsgeber und einer Druckpumpe mit Flüssigkeitsreservoire.The preparation system according to the invention is composed from a preparation needle, a solenoid valve, a Pulse generator and a pressure pump with liquid reservoirs.
Die Präparationsnadel besteht aus einem Rohr, welches in einem abgeflachten, in Form eines gleichschenkligen Dreiecks gestalteten Spitzenteiles mündet. Die Seitenteile des Dreieckes sind leicht schräggestellt und laufen kurz vor Erreichen der Spitze aus. Die Innenflächen der Seitenteile sind dachförmig gestaltet. Die Spitze selbst ist punktförmig verschlossen, so daß beiderseits zwei kleine, dreieckförmige Öffnungen verbleiben.The preparation needle consists of a tube, which in a flattened, in the form of an isosceles triangle designed lace part opens. The side parts of the Triangles are slightly slanted and run short Reaching the top out. The inner surfaces of the side panels are roof-shaped. The tip itself is punctiform closed, so that on both sides two small, triangular Openings remain.
Das dreieckförmige Endteil ist leicht gebogen. Die Krümmung erstreckt sich harmonisch bis in das mittlere Drittel des Rohres. Die Krümmung des Dreieckes wird von einer leicht konvexen Metallklappe bedeckt, die am hinteren Teil gelenkig gelagert ist und vor formschlüssig mit der Spitze der Nadel ausläuft. Über einen parallel zu Hauptachse laufenden Stab ist die Klappe in ihrer Position verstellbar. Die Ausgangslage wird durch eine am Flügelteil aufsitzende Druckfeder wieder erreicht. Am hinteren Drittel der Klappe befindet sich ein Längsschlitz, durch den eine senkrecht auf dem Dreieck befestigte Schneide geführt wird. Die Klappe und das Gegenstück der oberen Dreiecksfläche sind so gestaltet, daß eine bipolare Koagulation möglich ist. Unmittelbar hinter dem Dreieck schließt sich eine trapezförmig gestaltete, das Rohr umfassende Kappe an, welche in ein parallel zur Hauptachse verlaufendes dünnes Rohr mündet. Die Kappe weist am Übergang zum Dreieck schlitzförmige Öffnungen auf. Am oberen Teil der Präparationsnadel sind beide Rohre durch ein Flügelteil geführt und fest verankert. Die Rohre weisen hier einen Schlauchansatz auf. Im Flügelteil befindet sich die Schaltung für das Magnetventil. Der Schlauchansatz des Hauptrohres ist mit einem Schlauchstück gekoppelt, in dem ein Durcksensor integriert ist. Unmittelbar daran schließt sich das Magnetventil an, welches mit einem von der Druckpumpe kommenden Schlauch verbunden ist. Die Druckpumpe wird von einem mit Kochsalzlösung gefüllten Reservoire gespeist.The triangular end part is slightly curved. The curvature extends harmoniously into the middle third of the Tube. The curvature of the triangle becomes easy covered convex metal flap that hinged at the rear is stored and before form-fitting with the tip of the needle expires. Via a rod running parallel to the main axis the flap is adjustable in position. the initial situation is by a compression spring on the wing part reached again. Located on the back third of the flap a longitudinal slot through which one is perpendicular to the Triangle attached cutting edge is guided. The flap and that Counterpart of the upper triangular surface are designed so that bipolar coagulation is possible. Immediately behind the triangle is joined by a trapezoidal shape, the Tube comprehensive cap, which in a parallel to the The main axis runs thin tube opens. The cap points slit-shaped openings at the transition to the triangle. At the The upper part of the preparation needle is through one tube Wing part guided and firmly anchored. The pipes point here a hose attachment. The is in the wing part Circuit for the solenoid valve. The hose attachment of the Main pipe is coupled with a piece of hose in which a pressure sensor is integrated. Immediately closes the solenoid valve, which is connected to one of the pressure pumps coming hose is connected. The pressure pump will fed by a reservoir filled with saline.
Das erfindungsgemäße Präparationssystem wird nachfolgend in seiner Funktion am Beispiel der Duraschichtung erläutert.The preparation system according to the invention is described in its function explained using the example of Dura stratification.
Die obere Schicht der Dura wird mit dem Skalpell angeritzt.The upper layer of the dura is scratched with the scalpel.
Man schiebt die Präparationsnadel ca. 2 mm weit vor und gibt den unter Druck stehenden Flüssigkeitsstrom (Kochsalzlösung) frei. Durch die speziell geformte Spitze entstehen zwei schneidenartige Flüssigkeitsmembranen, die infolge der Impulssteuerung eine von innen nach außen laufende Bewegung ausführen. Die oberhalb der Spitze liegende Gewebsschicht wird sowohl in vertikaler als auch in horizontaler Richtung abgehoben, so daß die Nadel mühelos vorangeschoben werden kann. Der Präparationsvorgang erfolgt durch leichtes Vor- und Zurückschieben der Nadel. Beim Auftreffen des Stabes auf einen Widerstand (z. B. Gefäß) wird die Druckerhöhung durch den Drucksensor angezeigt. Die Koagulationsklappe wird geöffnet und das entsprechende Gefäß umschlossen. Nach dem Koagulationsvorgang wird die Nadel weiter vorgeschoben und das Gefäß mit Hilfe der Schneide durchtrennt. Die Klappe gleitet in die Ausgangslage zurück und gibt den oberen Schneidteil frei, der zur Durchtrennung der abgehobenen Schicht dient. Diese Bewegung wird durch die impulssynchrone Bewegung in dem der Nadel vorgeschalteten Schlauchstück unterstützt. Gleichzeitig dient das Schlauchstück als Druckausgleichszone bei einer Druckerhöhung im System. Der Druck wird durch ein Überdruckventil ausgeglichen. Die aus dem Operationsfeld ablaufende Flüssigkeit wird durch die der Spitze nachgeschalteten kappenförmigen Saugöffnung abgesaugt.The preparation needle is pushed forward approx. 2 mm and given the pressurized liquid flow (saline solution) free. The specially shaped tip creates two cutting-like liquid membranes, which are due to the Pulse control is a movement running from the inside out To run. The layer of tissue above the tip will be in both the vertical and horizontal directions lifted off so that the needle can be pushed forward effortlessly can. The preparation process is carried out by gently and pushing the needle back. When the rod hits a resistance (e.g. vessel) is caused by the pressure increase the pressure sensor is displayed. The coagulation flap will opened and the appropriate vessel enclosed. After this Coagulation process, the needle is advanced and cut the vessel with the help of the cutting edge. The flap slides back to the starting position and gives the upper one Cutting part free, which is used to cut the lifted Layer serves. This movement is due to the impulse synchronous Movement in the tube section upstream of the needle supported. At the same time, the piece of hose serves as Pressure equalization zone in the event of a pressure increase in the system. The Pressure is balanced by a pressure relief valve. From the operating field is drained by the Aspirated downstream cap-shaped suction opening.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19924209005 DE4209005A1 (en) | 1992-03-20 | 1992-03-20 | Instrument for removing layer of tissue - is formed by jet of water emitted through specially shaped needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19924209005 DE4209005A1 (en) | 1992-03-20 | 1992-03-20 | Instrument for removing layer of tissue - is formed by jet of water emitted through specially shaped needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE4209005A1 true DE4209005A1 (en) | 1993-09-23 |
Family
ID=6454559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19924209005 Withdrawn DE4209005A1 (en) | 1992-03-20 | 1992-03-20 | Instrument for removing layer of tissue - is formed by jet of water emitted through specially shaped needle |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE4209005A1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7589473B2 (en) | 2007-08-06 | 2009-09-15 | Plasma Surgical Investments, Ltd. | Pulsed plasma device and method for generating pulsed plasma |
| US7928338B2 (en) | 2007-02-02 | 2011-04-19 | Plasma Surgical Investments Ltd. | Plasma spraying device and method |
| US8105325B2 (en) | 2005-07-08 | 2012-01-31 | Plasma Surgical Investments Limited | Plasma-generating device, plasma surgical device, use of a plasma-generating device and method of generating a plasma |
| US8109928B2 (en) | 2005-07-08 | 2012-02-07 | Plasma Surgical Investments Limited | Plasma-generating device, plasma surgical device and use of plasma surgical device |
| US8613742B2 (en) | 2010-01-29 | 2013-12-24 | Plasma Surgical Investments Limited | Methods of sealing vessels using plasma |
| US8735766B2 (en) | 2007-08-06 | 2014-05-27 | Plasma Surgical Investments Limited | Cathode assembly and method for pulsed plasma generation |
| US9089319B2 (en) | 2010-07-22 | 2015-07-28 | Plasma Surgical Investments Limited | Volumetrically oscillating plasma flows |
| US9913358B2 (en) | 2005-07-08 | 2018-03-06 | Plasma Surgical Investments Limited | Plasma-generating device, plasma surgical device and use of a plasma surgical device |
| US11882643B2 (en) | 2020-08-28 | 2024-01-23 | Plasma Surgical, Inc. | Systems, methods, and devices for generating predominantly radially expanded plasma flow |
-
1992
- 1992-03-20 DE DE19924209005 patent/DE4209005A1/en not_active Withdrawn
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9913358B2 (en) | 2005-07-08 | 2018-03-06 | Plasma Surgical Investments Limited | Plasma-generating device, plasma surgical device and use of a plasma surgical device |
| US12075552B2 (en) | 2005-07-08 | 2024-08-27 | Plasma Surgical, Inc. | Plasma-generating device, plasma surgical device and use of a plasma surgical device |
| US8105325B2 (en) | 2005-07-08 | 2012-01-31 | Plasma Surgical Investments Limited | Plasma-generating device, plasma surgical device, use of a plasma-generating device and method of generating a plasma |
| US8109928B2 (en) | 2005-07-08 | 2012-02-07 | Plasma Surgical Investments Limited | Plasma-generating device, plasma surgical device and use of plasma surgical device |
| US8337494B2 (en) | 2005-07-08 | 2012-12-25 | Plasma Surgical Investments Limited | Plasma-generating device having a plasma chamber |
| US8465487B2 (en) | 2005-07-08 | 2013-06-18 | Plasma Surgical Investments Limited | Plasma-generating device having a throttling portion |
| US10201067B2 (en) | 2005-07-08 | 2019-02-05 | Plasma Surgical Investments Limited | Plasma-generating device, plasma surgical device and use of a plasma surgical device |
| US7928338B2 (en) | 2007-02-02 | 2011-04-19 | Plasma Surgical Investments Ltd. | Plasma spraying device and method |
| US8735766B2 (en) | 2007-08-06 | 2014-05-27 | Plasma Surgical Investments Limited | Cathode assembly and method for pulsed plasma generation |
| US7589473B2 (en) | 2007-08-06 | 2009-09-15 | Plasma Surgical Investments, Ltd. | Pulsed plasma device and method for generating pulsed plasma |
| US8030849B2 (en) | 2007-08-06 | 2011-10-04 | Plasma Surgical Investments Limited | Pulsed plasma device and method for generating pulsed plasma |
| US8613742B2 (en) | 2010-01-29 | 2013-12-24 | Plasma Surgical Investments Limited | Methods of sealing vessels using plasma |
| US9089319B2 (en) | 2010-07-22 | 2015-07-28 | Plasma Surgical Investments Limited | Volumetrically oscillating plasma flows |
| US10463418B2 (en) | 2010-07-22 | 2019-11-05 | Plasma Surgical Investments Limited | Volumetrically oscillating plasma flows |
| US10492845B2 (en) | 2010-07-22 | 2019-12-03 | Plasma Surgical Investments Limited | Volumetrically oscillating plasma flows |
| US10631911B2 (en) | 2010-07-22 | 2020-04-28 | Plasma Surgical Investments Limited | Volumetrically oscillating plasma flows |
| US12023081B2 (en) | 2010-07-22 | 2024-07-02 | Plasma Surgical, Inc. | Volumetrically oscillating plasma flows |
| US11882643B2 (en) | 2020-08-28 | 2024-01-23 | Plasma Surgical, Inc. | Systems, methods, and devices for generating predominantly radially expanded plasma flow |
| US12058801B2 (en) | 2020-08-28 | 2024-08-06 | Plasma Surgical, Inc. | Systems, methods, and devices for generating predominantly radially expanded plasma flow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8139 | Disposal/non-payment of the annual fee |