G 10025 DEG 10025 EN
Jostra Medizintechnik AGJostra Medical Technology AG
Hechinger Straße 38Hechinger Strasse 38
72145 Hirrlingen72145 Hirrlingen
In der Chirurgie, insbesondere in der Herzchirurgie, sind Spezial instrumente wie Koronarsonden, Spatel oder Mitral-Haken für Carpentier-Sperrer bekannt, die biegbare Abschnitte aus einem Edelstahldraht oder Edelstahlblech aufweisen, um jeweils an die speziellen Gegebenheiten bei der Operation angepasst werden zu können.In surgery, especially in cardiac surgery, special instruments such as coronary probes, spatulas or mitral hooks for Carpentier retractors are known, which have bendable sections made of stainless steel wire or stainless steel sheet in order to be able to be adapted to the specific conditions of the operation.
Nachteilig bei diesen bisher bekannten an den Patienten anpassbaren Instrumenten ist jedoch, dass die gebogenen Stellen nicht mehr völlig in den ursprünglichen Ausgangszustand zurückbiegbar sind. Folglich entsteht im Laufe der Zeit nach mehreren Operationen durch das ständige Hin- und Herbiegen ein Instrument mit einer total verbogenen Biegezone, das den Einsatz bei Operationen zunehmend erschwert. Außerdem kommt es durch das Hin- und Herbiegen zu Materialermüdungen, sodass das Instrument in der Biegezone brechen kann.The disadvantage of these previously known instruments, which can be adjusted to the patient, is that the bent areas can no longer be bent back to their original state. As a result, over time and after several operations, the constant bending back and forth results in an instrument with a completely bent bending zone, which makes it increasingly difficult to use during operations. In addition, the bending back and forth leads to material fatigue, which can cause the instrument to break in the bending zone.
Die Erfindung hat die Aufgabe, ein chirurgisches Instrument mit einer Biegezone dahin gehend zu verbessern, dass die unerwünschten zurückbleibenden Verbiegungen zukünftig entfallen.The invention has the object of improving a surgical instrument with a bending zone so that the undesirable residual bends are eliminated in the future.
G 10025 DEG 10025 EN
Die Erfindung löst die gestellte Aufgabe mittels eines chirurgischen Instruments, insbesondere für die Herzchirurgie, das während der Operation durch Biegen an den Patienten anpassbar ist, und aus einem Metall oder einer Metalllegierung mit Rückstellvermögen hergestellt ist. Durch die selbständige Rückstellung des Metalls in seine ursprüngliche Form entfällt das seitherige manuelle Zurückbiegen und die damit verbundenen unerwünschten verbleibenden Restverbiegungen.The invention solves the problem by means of a surgical instrument, in particular for cardiac surgery, which can be adjusted to the patient by bending during the operation and is made of a metal or metal alloy with resilience. The fact that the metal automatically returns to its original shape eliminates the need for manual bending back and the associated undesirable residual bending.
Vorteilhafterweise tritt dieses Rückstellvermögen des Metalls oder der Metalllegierung nur bei einer Temperatur auf, die deutlich oberhalb der Raumtemperatur und der Körpertemperatur liegt, damit sich das chirurgische Instrument während der Operation nicht unerwünschterweise wieder in seine ursprüngliche Form zurückbiegt.Advantageously, this resilience of the metal or metal alloy only occurs at a temperature that is significantly above room temperature and body temperature, so that the surgical instrument does not undesirably bend back to its original shape during the operation.
Wenn das chirurgische Instrument sterilisierbar ist, kann es während des Sterilisierungsvorgangs durch die beim Sterilisierungsvorgang auftretenden hohen Temperaturen wieder seine ursprüngliche Form einnehmen.If the surgical instrument is sterilizable, it may return to its original shape during the sterilization process due to the high temperatures encountered during the sterilization process.
Als bevorzugtes Material für das chirurgische Instrument kommt insbesondere Nitinol in Frage.Nitinol is particularly considered as the preferred material for the surgical instrument.
Falls das chirurgische Instrument in verschiedenen Richtungen biegbar sein muss, ist ein runder Querschnitt der Biegezone von Vorteil. Aber auch jede andere Querschnittsform, beispielsweise eine rechteckige, ist denkbar.If the surgical instrument has to be bendable in different directions, a round cross-section of the bending zone is advantageous. However, any other cross-sectional shape, such as a rectangular one, is also conceivable.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29918537UDE29918537U1 (en) | 1999-10-21 | 1999-10-21 | Surgical instrument |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29918537UDE29918537U1 (en) | 1999-10-21 | 1999-10-21 | Surgical instrument |
| Publication Number | Publication Date |
|---|---|
| DE29918537U1true DE29918537U1 (en) | 1999-12-30 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE29918537UExpired - LifetimeDE29918537U1 (en) | 1999-10-21 | 1999-10-21 | Surgical instrument |
| Country | Link |
|---|---|
| DE (1) | DE29918537U1 (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3707899A1 (en) | 1986-03-13 | 1987-09-24 | Olympus Optical Co | MEDICAL TUBE, IN PARTICULAR INSERTION SECTION OF AN ENDOSCOPE |
| DE4136861C2 (en) | 1991-11-11 | 1994-12-15 | Kernforschungsz Karlsruhe | Controllable surgical instrument |
| DE3714492C2 (en) | 1986-05-02 | 1995-02-02 | Olympus Optical Co | Tubular construction for medical applications |
| WO1995009578A1 (en) | 1992-10-05 | 1995-04-13 | Sanders Albert E | Nitinol instrumentation and method for treating scoliosis |
| DE4335783A1 (en) | 1993-10-20 | 1995-04-27 | Winter & Ibe Olympus | Ureteroscope |
| WO1998043546A1 (en) | 1997-03-18 | 1998-10-08 | Dicamed Ab | Surgical device |
| WO1999042036A1 (en) | 1998-02-20 | 1999-08-26 | General Surgical Innovations, Inc. | Bendable, reusable medical instruments with improved fatigue life |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3707899A1 (en) | 1986-03-13 | 1987-09-24 | Olympus Optical Co | MEDICAL TUBE, IN PARTICULAR INSERTION SECTION OF AN ENDOSCOPE |
| DE3714492C2 (en) | 1986-05-02 | 1995-02-02 | Olympus Optical Co | Tubular construction for medical applications |
| DE4136861C2 (en) | 1991-11-11 | 1994-12-15 | Kernforschungsz Karlsruhe | Controllable surgical instrument |
| WO1995009578A1 (en) | 1992-10-05 | 1995-04-13 | Sanders Albert E | Nitinol instrumentation and method for treating scoliosis |
| DE4335783A1 (en) | 1993-10-20 | 1995-04-27 | Winter & Ibe Olympus | Ureteroscope |
| WO1998043546A1 (en) | 1997-03-18 | 1998-10-08 | Dicamed Ab | Surgical device |
| WO1999042036A1 (en) | 1998-02-20 | 1999-08-26 | General Surgical Innovations, Inc. | Bendable, reusable medical instruments with improved fatigue life |
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| Date | Code | Title | Description |
|---|---|---|---|
| R207 | Utility model specification | Effective date:20000203 | |
| R163 | Identified publications notified | Effective date:20000525 | |
| R081 | Change of applicant/patentee | Owner name:JOSTRA AG, DE Free format text:FORMER OWNER: JOSTRA MEDIZINTECHNIK AG, 72145 HIRRLINGEN, DE Effective date:20030108 | |
| R156 | Lapse of ip right after 3 years | Effective date:20030501 |