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WO1996024299A1 - Device for cutting a biological structure and process for its application - Google Patents

Device for cutting a biological structure and process for its application Download PDF

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Publication number
WO1996024299A1
WO1996024299A1 PCT/DE1996/000175 DE9600175W WO9624299A1 WO 1996024299 A1 WO1996024299 A1 WO 1996024299A1 DE 9600175 W DE9600175 W DE 9600175W WO 9624299 A1 WO9624299 A1 WO 9624299A1
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WO
WIPO (PCT)
Prior art keywords
capillary
pressure
medium
anesthetic
separating
Prior art date
Application number
PCT/DE1996/000175
Other languages
German (de)
French (fr)
Inventor
Andreas Pein
Original Assignee
Andreas Pein
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Andreas Pein filed Critical Andreas Pein
Publication of WO1996024299A1 publication Critical patent/WO1996024299A1/en

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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
    • 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
    • A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes

Definitions

  • the invention relates to a device for separating a biological structure, in particular human tissue, and to methods for using such a device.
  • Such a device consists of devices of a water jet cutting system and is used for minimally invasive interventions in human and veterinary medicine.
  • Water jet cutting systems are known and mainly consist of a pressure medium circuit with a pressure generator and corresponding control and regulating devices and a separation medium circuit with a flexible receptacle for the separation medium and one or more handpieces.
  • a desired pressure is generated in the pressure medium circuit which acts directly on the flexible receptacle.
  • the separation medium is displaced from the receptacle and transported via lines to the handpiece, where it exits under pressure.
  • This emerging water jet separates the biological structure in a known manner.
  • Such a system has become known in DE P 42 00 976 of the applicant.
  • This system has a piston-cylinder unit, the piston of which is loaded by the regulated pressure medium and whose movement can be reversed via a directional valve.
  • the cylinder space receives the flexible receptacle for the separation medium.
  • This receptacle is designed as a cartridge and has a positive connection to the cylinder space over the entire stroke of the piston-cylinder unit.
  • This system is characterized in particular by the fact that the pressure in the pressure medium circuit can be adjusted sensitively and continuously and can be transferred to the separation medium in an extremely precise and reproducible manner.
  • the result of this is that the emerging separating medium flow always has a preferred laminar flow, even after emerging from the nozzle of the handpiece, and forms a sharp-edged water jet. A number of significant advantages in use are associated with this sharpness.
  • the object is to design a generic device and to design the methods of its use in such a way that minimally invasive and orthopedic interventions are also possible with it. This object is achieved by the characterizing features of claims 1 and 8.
  • the device combines the advantages of water jet cutting with those of endoscopy and all other known minimally invasive methods.
  • the highly flexible endo-capillary can be inserted through a very small body opening and can be positioned and controlled very precisely in the body, preferably with the aid of endoscopy.
  • a water-jet cutting system which consists of a pressure medium circuit and a separation medium circuit and which has a piston-cylinder unit, the piston of which is loaded by the pressure medium and its cylinder space accommodates a flexible receptacle for the separation medium.
  • the receptacle is designed as a cartridge and has a positive connection with the cylinder space over the entire stroke.
  • This water-jet cutting system in an exemplary manner forms a sharp-edged separating jet which is free from cavitation and turbulence and is therefore excellently suitable for minimally invasive interventions.
  • the separation medium can be introduced into the endo-capillary in a temperature-controlled manner.
  • all known advantages of thermal tissue influencing can be used.
  • a laser can be coupled into the separation medium, so that the endo-capillary can also be used as an optical fluid transmission system.
  • the laser beam guided in the separation medium is preferably used for the crushing of kidney stones.
  • the device can interact with a further pressure generator system which generates pressure spikes and induces them in the separation medium.
  • the device can also be used specifically for minimally invasive interventions for local anesthesia.
  • a nozzle capillary is provided for orthopedic interventions. This allows the cement between the bone and the implant to be removed during joint revisions on implants that have been used with bone cement.
  • the nozzle capillary is particularly suitable for the patient-friendly removal of cement-free implants from the bone. The device is explained in more detail below using an exemplary embodiment.
  • Fig.l a schematic representation of the device.
  • the device works together with a water jet cutting system, which mainly consists of a printer generator device 1 for the separation medium.
  • the pressure generating device 1 can generate the pressure directly in the separation medium or indirectly via a second pressure medium circuit.
  • the pressure of the pressure medium is transferred via a device, for example a piston-cylinder unit, to a flexible receiving container for the separation medium.
  • a line 2 leads from the pressure generating device to an adapter 3 and from there a highly flexible endo-capillary 4 preferably to an endoscope 5.
  • the endoscope 5 is known to consist of a handpiece 6 with a control device 7 and a flexible working tube 8 End of the flexible working tube 8 can be freely positioned using the control device 7.
  • the end capillary 4 is inserted into a working channel 9 of the working tube 8 and protrudes slightly from the working tube 8.
  • the endo capillary 5 has a nozzle 10.
  • the water jet cutting system also has a Adapter 3 leading line 11, in which a heater 12 is integrated.
  • the waterjet cutting installation furthermore has a line 13 leading to the adapter 3 with a pressure pulse generator device 14 and a further line 15 with a laser beam generating device 16.
  • the device additionally has a cartridge filled with anesthetic, which is inserted into the pressure generating device 1 and is connected to an anesthetic capillary 17 by means of the line 2 via the adapter 3. It is also connected via the adapter 3 to a nozzle capillary 18 for optional use in orthopedics.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Molecular Biology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • External Artificial Organs (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
  • Centrifugal Separators (AREA)
  • Surgical Instruments (AREA)

Abstract

Known water-jet cutting devices can only be used to a limited extent and only where the operator's hand and the handpiece have access. For minimally invasive and orthopaedic operations the invention proposes forming the capillary tube as an endo-capillary tube (4) and preferably combining it with an endoscope (5). The invention further concerns the use of this device in minimally invasive and orthopaedic operations.

Description

B e s ehr e ibungW ith honor
Vorrichtung zum Trennen einer biologischen Struktur und Verfahren zu ihrer AnwendungDevice for separating a biological structure and method for using it
Die Erfindung bezieht sich auf eine Vorrichtung zum Trennen einer biologischen Struktur, insbesondere des menschlichen Gewebes und auf Verfahren zur Anwendung ei¬ ner solchen Vorrichtung.The invention relates to a device for separating a biological structure, in particular human tissue, and to methods for using such a device.
Eine derartige Vorrichtung besteht aus Einrichtungen ei¬ ner Water-jet-cutting-Anlage und wird für minimalinvasi- ve Eingriffe in der Human- und Veterinärmedizin eingesetzt.Such a device consists of devices of a water jet cutting system and is used for minimally invasive interventions in human and veterinary medicine.
Water-jet-cutting-Anlagen sind bekannt und bestehen hauptsächlich aus einem Druckmediumkreislauf mit einem Druckerzeuger und entsprechenden Steuer- und Regelein¬ richtungen und einem Trennmediumkreislauf mit einem fle¬ xiblen Aufnahmebehälter für das Trennmedium und ein oder mehrere Handstücke.Water jet cutting systems are known and mainly consist of a pressure medium circuit with a pressure generator and corresponding control and regulating devices and a separation medium circuit with a flexible receptacle for the separation medium and one or more handpieces.
Zur Handhabung dieser Anlagen wird im Druckmediumkreis¬ lauf eine gewünschter Druck erzeugt, der unmittelbar auf den flexiblen Aufnahmebehälter wirkt. Dabei wird das Trennmedium aus dem Aufnahmebehälter verdrängt und über Leitungen zum Handstück befördert, wo es unter Druck austritt. Dieser austretende Water-jet trennt die biolo¬ gische Struktur in bekannter Weise. Eine solche Anlage ist in der DE P 42 00 976 des Anmeld¬ ers bekannt geworden. Diese Anlage besitzt eine Kolben- Zylinder-Einheit, deren Kolben vom geregelten Druckmedi¬ um belastet wird und dessen Bewegung über ein Wegeventil umkehrbar ist. Der Zylinderraum nimmt den flexiblen Auf¬ nahmebehälter für das Trennmedium auf. Dabei ist dieser Aufnahmebehälter als Kartusche ausgebildet und besitzt über den gesamten Hub der Kolben-Zylinder-Einheit einen Formschluß zum Zylinderraum.To handle these systems, a desired pressure is generated in the pressure medium circuit which acts directly on the flexible receptacle. The separation medium is displaced from the receptacle and transported via lines to the handpiece, where it exits under pressure. This emerging water jet separates the biological structure in a known manner. Such a system has become known in DE P 42 00 976 of the applicant. This system has a piston-cylinder unit, the piston of which is loaded by the regulated pressure medium and whose movement can be reversed via a directional valve. The cylinder space receives the flexible receptacle for the separation medium. This receptacle is designed as a cartridge and has a positive connection to the cylinder space over the entire stroke of the piston-cylinder unit.
Diese Anlage zeichnet sich insbesondere dadurch aus, daß sich der Druck im Druckmediumkreislauf feinfühlig und stufenlos einstellen und äußerst genau und reproduzier¬ bar auf das Trennmedium übertragen läßt. Das bewirkt, daß der austretende Trennmediumstrom stets, auch nach dem Austritt aus der Düse des Handstückes, eine bevor¬ zugte laminare Strömung besitzt und einen scharfkantigen Wasserstrahl ausbildet. Mit dieser Scharfkantigkeit sind eine Reihe wesentlicher Vorteile in der Anwendung ver¬ bunden.This system is characterized in particular by the fact that the pressure in the pressure medium circuit can be adjusted sensitively and continuously and can be transferred to the separation medium in an extremely precise and reproducible manner. The result of this is that the emerging separating medium flow always has a preferred laminar flow, even after emerging from the nozzle of the handpiece, and forms a sharp-edged water jet. A number of significant advantages in use are associated with this sharpness.
Diese und alle anderen Water-jet-cutting sind allerdings nur begrenzt einsetzbar und zwar nur an solchen mensch¬ lichen oder tierischen Organe, die dem Operateur mit seiner Hand und dem Handstück der Einrichtung zugänglich sind.However, these and all other water-jet cutting can only be used to a limited extent, and only on those human or animal organs that are accessible to the surgeon with his hand and the handpiece of the device.
Es besteht die Aufgabe, eine gattungsgemäße Vorrichtung so auszubilden und die Verfahren ihrer Anwendung so zu gestalten, daß damit auch minimalinvasive und orthopädi¬ sche Eingriffe möglich sind. Diese Aufgabe wird durch die kennzeichnenden Merkmale der Ansprüche 1 und 8 gelöst.The object is to design a generic device and to design the methods of its use in such a way that minimally invasive and orthopedic interventions are also possible with it. This object is achieved by the characterizing features of claims 1 and 8.
Zweckdienliche Ausgestaltungen ergeben sich aus den Ans¬ prüchen 2 bis 7 und dem Anspruch 9.Useful configurations result from claims 2 to 7 and claim 9.
Die Vorrichtung vereint die Vorteile des Wasserstrahl- Schneidens mit denen der Endoskopie und allen anderen bekannten minimalinvasiven Methoden.The device combines the advantages of water jet cutting with those of endoscopy and all other known minimally invasive methods.
Dadurch wird es möglich, Water-jet-cutting bei mini¬ malinvasiven Eingriffen in der Human- und Veterinärmedi¬ zin einzusetzen. Damit werden für die Water-jet-cutting- Verfahren neue Anwendungsgebiete in der Medizin er¬ schlossen.This makes it possible to use water-jet cutting for minimally invasive interventions in human and veterinary medicine. This opens up new fields of application in medicine for the waterjet cutting method.
Vorzugsweise mit Hilfe der Endoskopie kann die hochfle¬ xible Endo-Kapillare durch eine sehr kleine Körperöff¬ nung eingeführt und im Körper sehr genau positioniert und gesteuert werden.The highly flexible endo-capillary can be inserted through a very small body opening and can be positioned and controlled very precisely in the body, preferably with the aid of endoscopy.
Bei einer zweckdienlichen Ausgestaltung der Erfindung wird eine Water-jet-cutting-Anlage eingesetzt, die aus einem Druckmediumkreis und einem Trennmediumkreis be¬ steht und die eine Kolben-Zylinder-Einheit besitzt, de¬ ren Kolben vom Druckmedium belastet wird und dessen Zy¬ linderraum einen flexiblen Aufnahmebehälter für das Trennmedium aufnimmt. Dabei ist der Aufnahmebehälter als Kartusche ausgebildet und besitzt über den gesamten Hub einen Formschluß mit dem Zylinderraum.In an expedient embodiment of the invention, a water-jet cutting system is used which consists of a pressure medium circuit and a separation medium circuit and which has a piston-cylinder unit, the piston of which is loaded by the pressure medium and its cylinder space accommodates a flexible receptacle for the separation medium. The receptacle is designed as a cartridge and has a positive connection with the cylinder space over the entire stroke.
Diese Water-jet-cutting-Anlage bildet in vorbildlicher Weise einen scharfkantigen Trennstrahl aus, der frei von Kavitation und Verwirbelungen ist und sich daher ausge¬ zeichnet für minimalinvasive Eingriffe eignet. Bei einer anderen Ausgestaltung der Vorrichtung kann das Trennmedium temperaturgesteuert in die Endo-Kapillare eingeführt werden. Damit können zusätzlich alle bekann¬ ten Vorteile der thermischen Gewebebeeinflussung genutzt werden.This water-jet cutting system in an exemplary manner forms a sharp-edged separating jet which is free from cavitation and turbulence and is therefore excellently suitable for minimally invasive interventions. In another embodiment of the device, the separation medium can be introduced into the endo-capillary in a temperature-controlled manner. In addition, all known advantages of thermal tissue influencing can be used.
In einer weiteren Ausgestaltung der Vorrichtung kann ein Laser in das Trennmedium eingekoppelt werden, sodaß die Endo-Kapillare auch als Optik-Fluid-Transmissionssystem genutzt werden kann. Der im Trennmedium geführte Laser¬ strahl wird vorzugsweise bei der Zertrümmerung von Nie¬ rensteinen verwendet.In a further embodiment of the device, a laser can be coupled into the separation medium, so that the endo-capillary can also be used as an optical fluid transmission system. The laser beam guided in the separation medium is preferably used for the crushing of kidney stones.
Weiterhin kann die Vorrichtung mit einem weiteren Druk- kerzeugersystem zusammenwirken, das Druckpiks erzeugt und in das Trennmedium induziert. Dabei entstehen Schockwellen, die für unterschiedlichste Zertrümmerun¬ gen, wie Harnleiter-, Blasen-, Nieren- und Gallensteinen sowie zur Entfernung von Gefäßverengungen und Gefäßver¬ schlüssen geeignet sind.Furthermore, the device can interact with a further pressure generator system which generates pressure spikes and induces them in the separation medium. This creates shock waves which are suitable for a wide variety of smashing operations, such as ureter, bladder, kidney and gall stones, and for removing vasoconstrictions and vascular occlusions.
Die Vorrichtung kann bei Verwendung einer speziellen Kartusche und einer Anästhesie-Kapillare für ein Anäs- thetikum als spezielles Trennmedium auch für minimal-in¬ vasive Eingriffe gezielt zur Lokalanästhesie eingesetzt werden.When using a special cartridge and an anesthetic capillary for an anesthetic as a special separating medium, the device can also be used specifically for minimally invasive interventions for local anesthesia.
Außerdem ist für orthopäische Eingriffe eine Düsen-Ka¬ pillare vorgesehen. Damit kann bei Gelenkrevisionen an Implantaten, die mit Knochenzement eingesetzt wurden, dieser Zement zwischen Knochen und Implantat entfernt werden. Besonders geeignet ist die Düsen-Kapillare für die patientenschonende Entfernung von zementfrei einge¬ setzten Implantaten aus dem Knochen. Die Vorrichtung wird nachfolgend an einem Ausführungs- beispiel näher erläutert.In addition, a nozzle capillary is provided for orthopedic interventions. This allows the cement between the bone and the implant to be removed during joint revisions on implants that have been used with bone cement. The nozzle capillary is particularly suitable for the patient-friendly removal of cement-free implants from the bone. The device is explained in more detail below using an exemplary embodiment.
Dazu zeigt dieThe shows
Fig.l: eine schematische Darstellung der Vorrichtung.Fig.l: a schematic representation of the device.
Die Vorrichtung wirkt zusammen mit einer Water-Jet- cutting-Anlage, die hauptsächlich aus einer Druckerzeu¬ gereinrichtung 1 für das Trennmedium besteht . Dabei kann die Druckerzeugereinrichtung 1 den Druck unmittelbar im Trennmedium oder indirekt über einen zweiten Druckmedi¬ umkreislauf erzeugen. Im bevorzugten zweiten Fall wird der Druck des Druckmediums über eine Einrichtung, bei¬ spielsweise eine Kolben-Zylinder-Einheit auf einen fle¬ xiblen Aufnamebehälter für das Trennmedium übertragen.The device works together with a water jet cutting system, which mainly consists of a printer generator device 1 for the separation medium. The pressure generating device 1 can generate the pressure directly in the separation medium or indirectly via a second pressure medium circuit. In the preferred second case, the pressure of the pressure medium is transferred via a device, for example a piston-cylinder unit, to a flexible receiving container for the separation medium.
Von der Druckerzeugereinrichtung führt eine Leitung 2 zu einem Adapter 3 und von dort eine hochflexible Endo-Ka¬ pillare 4 vorzugsweise zu einem Endoskop 5. Das Endoskop 5 besteht bekanntermaßen aus einem Handstück 6 mit einer Steuereinrichtung 7 und einer biegsamen Arbeitsröhre 8. Dabei ist das Ende der biegsamen Arbeitsröhre 8 mit Hil¬ fe der Steuereinrichtung 7 frei positionierbar. Die En¬ do-Kapillare 4 ist in einen Arbeitskanal 9 der Arbeits¬ röhre 8 eingeführt und ragt geringfügig aus der Arbeitε- röhre 8 heraus. Die Endo-Kapillare 5 besitzt eine Düse 10. Die Water-jet-cutting-Anlage besitzt weiterhin eine zum Adapter 3 führende Leitung 11, in die eine Heizeinrich¬ tung 12 eingebunden ist.A line 2 leads from the pressure generating device to an adapter 3 and from there a highly flexible endo-capillary 4 preferably to an endoscope 5. The endoscope 5 is known to consist of a handpiece 6 with a control device 7 and a flexible working tube 8 End of the flexible working tube 8 can be freely positioned using the control device 7. The end capillary 4 is inserted into a working channel 9 of the working tube 8 and protrudes slightly from the working tube 8. The endo capillary 5 has a nozzle 10. The water jet cutting system also has a Adapter 3 leading line 11, in which a heater 12 is integrated.
Die Water-jet-cutting-Anlage besitzt weiterhin eine zum Adapter 3 führende Leitung 13 mit einer Druckimpulser¬ zeugereinrichtung 14 und eine weitere Leitung 15 mit ei¬ ner Laserstrahlerzeugungseinrichtung 16.The waterjet cutting installation furthermore has a line 13 leading to the adapter 3 with a pressure pulse generator device 14 and a further line 15 with a laser beam generating device 16.
Die Vorrichtung weist zusätzlich eine mit Anästhetikum gefüllte Kartusche auf, die in die Druckerzeugungsein¬ richtung 1 eingesetzt ist und mittels der Leitung 2 über den Adapter 3 mit einer Anästhesie-Kapillare 17 verbun¬ den ist. Sie ist außerdem über den Adapter 3 mit einer Düsenkapillare 18 für die wahlweise Anwendung in der Or¬ thopädie verbunden. The device additionally has a cartridge filled with anesthetic, which is inserted into the pressure generating device 1 and is connected to an anesthetic capillary 17 by means of the line 2 via the adapter 3. It is also connected via the adapter 3 to a nozzle capillary 18 for optional use in orthopedics.
Verwendete BezugszeichenReference symbols used
1 Druckerzeugungseinrichtung1 pressure generating device
2 Leitung2 line
3 Adapter3 adapters
4 Endo-Kapillare4 endo capillaries
5 Endoskop5 endoscope
6 Handstück6 handpiece
7 Steuereinrichtung7 control device
8 Arbeitsröhre8 working tube
9 Arbeitskanal9 working channel
10 Düse10 nozzle
11 Leitung11 line
12 Heizeinrichtung12 heating device
13 Leitung13 line
14 Druckimpulserzeugereinrichtung14 pressure pulse generating device
15 Leitung15 line
16 Laserstrahlerzeugereinrichtung16 laser beam generating device
17 Anästhesie-Kapillare17 Anesthesia capillary
18 Düsen-Kapillare 18 nozzle capillaries

Claims

Patentansprüche claims
1. Vorrichtung zum Trennen einer biologischen Struk¬ tur, bestehend aus einer Water-jet-cutting-Anlage mit einer Druckerzeugungseinrichtung für ein Trennmedium und einer Kapillare, aus der das unter Druck stehende Trenn¬ medium austritt, dadurch gekennzeichnet, daß die Kapillare als Endo-Ka¬ pillare (4) ausgebildet ist und vorzugsweise mit einem Endoskop (5) kombiniert ist.1. Device for separating a biological structure, consisting of a water jet cutting system with a pressure generating device for a separating medium and a capillary from which the pressurized separating medium emerges, characterized in that the capillary is used as an endo -Capillary (4) is formed and is preferably combined with an endoscope (5).
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß eine Water-jet-cutting-Anla¬ ge verwendet wird, die aus einem Druckmediumkreis und einem Trennmediumkreis besteht und die eine Kolben-Zy¬ linder-Einheit besitzt, deren Kolben vom Druckmedium be¬ lastet wird und dessen Zylinderraum einen flexiblen Aufnahmebehälter für das Trennmedium aufnimmt, wobei der Aufnahmebehälter als Kartusche ausgebildet ist.2. Device according to claim 1, characterized in that a water jet cutting system is used which consists of a pressure medium circuit and a separation medium circuit and which has a piston-cylinder unit, the pistons of which are pressure medium is loaded and the cylinder space receives a flexible receptacle for the separation medium, the receptacle being designed as a cartridge.
3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Kapillare (4) mit einer Heizeinrichtung (12) verbunden ist.3. Apparatus according to claim 1, characterized in that the capillary (4) is connected to a heating device (12).
4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Kapillare (4) mit einer Druckimpulserzeugereinrichtung (14) verbunden ist. 4. The device according to claim 1, characterized in that the capillary (4) is connected to a pressure pulse generator device (14).
5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Kapillare (4) mit einer Laserstrahlerzeugungseinrichtung (16) verbunden ist.5. The device according to claim 1, characterized in that the capillary (4) is connected to a laser beam generating device (16).
6. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß eine Anästhesie-Kapillare (17) mit einer Kartusche verbunden ist, die ein Anästhe- tikum enthält.6. The device according to claim 1, characterized in that an anesthetic capillary (17) is connected to a cartridge which contains an anesthetic.
7. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Adapter (3) mit einer Düsen-Kapillare (18) in Verbindung steht.7. The device according to claim 1, characterized in that the adapter (3) with a nozzle capillary (18) is connected.
8. Verfahren zur Anwendung einer Vorrichtung nach den Ansprüchen 1 bis 7, dadurch gekennzeichnet, daß sie für minimalinvasive Ein¬ griffe eingesetzt wird, wobei als Trennmedium ein Ane- sthetikum verwendet oder mitverwendet wird.8. A method for using a device according to claims 1 to 7, characterized in that it is used for minimally invasive interventions, anesthetic being used or being used as the separating medium.
9. Verfahren zur Anwendung einer Vorrichtung nach den Ansprüchen 1 bis 7, dadurch gekennzeichnet, daß ihr Einsatz für orthopädi¬ sche Eingriffe erfolgt. 9. A method for using a device according to claims 1 to 7, characterized in that it is used for orthopedic interventions.
PCT/DE1996/000175 1995-02-08 1996-02-06 Device for cutting a biological structure and process for its application WO1996024299A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29501973.5 1995-02-08
DE29501973U DE29501973U1 (en) 1995-02-08 1995-02-08 Device for separating a biological structure

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US6899712B2 (en) 2000-01-10 2005-05-31 Hydrocision, Inc. Surgical instruments with integrated electrocautery
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US7431711B2 (en) 2001-11-21 2008-10-07 Hydrocision, Inc. Liquid jet surgical instruments incorporating channel openings aligned along the jet beam
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DE102004057366A1 (en) * 2004-11-27 2006-06-08 Erbe Elektromedizin Gmbh Mice resection device
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US8574186B2 (en) 2004-11-27 2013-11-05 Erbe Elektromedizin Gmbh Device for mucosa resection
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US10492821B2 (en) 2016-06-24 2019-12-03 Hydrocision, Inc. Selective tissue removal treatment device
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