Surgery – Instruments
Patent
1997-05-27
1999-11-02
Dawson, Glenn K.
Surgery
Instruments
606 45, 606174, A61B 1700
Patent
active
059761210
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention related to a medical manipulating device having a medical instrument disposed at the distal end, a grip disposed at the proximal end, and a shank part connecting the grip to the instrument, according to the generic part of claim 1.
Instruments of this type are utilized, by way of illustration, in endoscopy and, in particular, in minimal-invasive surgery.
STATE OF THE ART
A medical manipulating device according to the generic part of claim 1 is known from EP-A-0 546 767. A largely similar manipulating device is described in DE-A-41 36 861.
The known manipulating devices, which are particularly used in minimal-invasive surgery, have a grasping part in the form of a pistol handle. The grasping part is connected to a shank part at whose distal end a surgical instrument is disposed, by way of illustration, a gripper or a pair of scissors. The grip is provided on the side of the grasping part facing the surgical instrument with an actuating lever which is connected to the surgical instrument by means of a transmission connection.
Unfavorable is these known manipulating devices is, however, that when actuating the lever, the holding position of the hand has to be released so that the grip and the surgical instrument fixed thereto can no longer be grasped or guided firmly. In order to avoid faulty positioning of the, in many cases, very small surgical instrument, and the entailed risk of injury to the patient, the grip therefore has to be held with the other hand when adjusting or releasing the actuating lever on the grasping or the shank part connected thereto. Frequently, however, this other hand is needed in minimal-invasive surgery for carrying out other work, by way of illustration, operating measuring or monitoring devices.
The grip known from DE-A-41 36 861 is provided, on the side facing away from the surgical instrument, with two switches that can be actuated with the thumb for triggering electric devices. With these switches the surgical instrument at the distal end of the shaft can be rotated and swiveled. Unfavorable, however, is that both switches can be actuated only alternately with the thumb so that simultaneous rotating and swiveling of the surgical instrument is practically impossible. Moreover, in order to actuate the switch, the thumb has to be stretched out relatively far away from the hand so that the hand tires quickly during minimal-invasive surgery in which the surgeon has to frequently hold or actuate the surgical instrument by the grip for more than one hour.
DESCRIPTION OF THE INVENTION
The object of the present invention is to provide a medical manipulating device having a medical instrument disposed at the distal end, a grip at the proximal end, and a shank part connecting the grip to the instrument, with which the work of the medical manipulating device can be safely carried out for long periods of time without tiring. In particular, it should be possible to operate and position the instrument with only one hand. Moreover, with the manipulating device, holding and precise positioning should be possible without tiring.
An invented solution to this object is provided in claim 1. Further improvements of this manipulating device according to the present invention are the subject matter of claims 2 and the following claims.
According to the present invention, a generic manipulating device is further improved by a combination of the following features: largely be grasped by one hand at least between the ball section and the metacarpus of the hand respectively the first row of phalanges of the hand and can be held without the use of at least the third and second joints of the index finger and the middle finger, actuating element is provided of which each is designed in such a manner that when it is actuated with the free finger tip of the assigned finger, the rest of the hand and finger region remain essentially in a grasping respectively holding position.
The ergonomically shaped grasping part which can be grasped with the ball, the metacarpus a
REFERENCES:
patent: 5295956 (1994-03-01), Bales et al.
patent: 5441494 (1995-08-01), Oritz
patent: 5454827 (1995-10-01), Aust et al.
patent: 5669875 (1997-09-01), Eerdenburg
Matern Ulrich
Waller Peter
Dawson Glenn K.
Karl Storz GmbH & Co.
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