Surgery – Instruments – Surgical mesh – connector – clip – clamp or band
Reexamination Certificate
1999-08-17
2001-07-10
Jackson, Gary (Department: 3731)
Surgery
Instruments
Surgical mesh, connector, clip, clamp or band
C606S139000, C227S175100, C227S179100
Reexamination Certificate
active
06258107
ABSTRACT:
TECHNICAL FIELD AND BACKGROUND OF THE INVENTION
The invention relates to an apparatus for connecting a variety of surgical instruments to an operating control device.
Disclosed, for example, by U.S. Pat. No. 4,573,468 is a circular stapling device from which the head unit may be removed as a whole. Connecting the head unit to an operating control part on this stapling device is achieved by a complicated bayonet lock. Furthermore, the clincher insertion head needs to be screwed onto/from this known instrument which is a nuisance and time-consuming.
As it reads from U.S. Pat. No. 5,533,361 a head part of the surgical instrument is positively connected by a crimped tube stiffly and non-separably to a shank part of the operating control means. In U.S. Pat. No. 4,606,343 too, it reads that a shank tube of the operating control device and a head part of the surgical instrument are likewise fixedly connected to each other. Replacing any parts of the surgical instrument is thus not provided for.
SUMMARY OF THE INVENTION
It is thus the object of the invention to configure a variety of surgical instruments so that they can be quickly replaced whilst retaining satisfactory operating control of the element in each case, and that furthermore as many function elements as possible of the various instruments are reusable.
In accordance with the invention, for connecting a variety of surgical instruments for both minimally invasive surgery and for application in open surgery a push-button fastener is provided at the proximal end of the instrument to be connected in each case at the distal end of a shank part of an operating control device. Furthermore, for connecting and actuating the function elements of the instrument connected in each case a mandrel assembly is provided at the proximal end of the instrument which is mounted on a receiving part at the distal end of an adjuster mechanism actuatable by the operating control means.
In accordance with the invention the mandrel assembly is preferably a tubular pin body slotted at its proximal end, having splined portions which is mounted on a contact pin guided and positioned in the shank part and connected to the adjustmer mechanism of the operating control means.
Unlike the complicated need to screw the clincher insertion head onto the circular stapling device as disclosed by U.S. Pat. No. 4,573,468 the head unit is connected by the solution in accordance with the invention via a simple push button fastener to the distal end of the shank part of the operating control means. In addition, connection of the clincher insertion head for instance of a circular stapling device is achieved via a latch fastener. In accordance with the invention a variety of instruments can thus be speedily and intuitively connected to the shank part of an operating control means and, at the same time, salient function elements of the surgical instrument concerned to be connected via a mandrel provided at the distal end of the shank part of the operating control means.
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Balazs Matthias
Hagn Ulrich
Browdy and Neimark
Deutsches Zentrum fur Luft-und Raumfahrt e.V.
Jackson Gary
LandOfFree
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