DE2347418C3

DE2347418C3 - Surgical stapler

Info

Publication number: DE2347418C3
Application number: DE19732347418
Authority: DE
Inventors: David Thomas Norwalk Conn Green (VStA)
Original assignee: United States Surgical Corp, Balti more, Md (VStA)
Priority date: 1972-09-22
Filing date: 1973-09-20
Publication date: 1977-07-07

Description

weil das Magazin aus einem Stück mit dem Zylinder 55 beaufschlagenden Schraubenfeder, und einen zweitenbecause the magazine is made of one piece with the cylinder 55 acting coil spring, and a second

besteht. Da der Zylinder außerdem senkrecht zum Griffteil und das Magazin in rechtem Winkel zu dem Zylinder angeordnet ist, bringt die Drehbarkeit des Zylinders bei chirurgischen Anwendungen keinen Vorteil mit sich, weil das Magazin sowieso in jeder Drehstellung ein Hindernis darstellt, in dem es das dichte Anlegen eines im Zylinder enthaltenen Ausstoßelementes an die Wunde beeinträchtigt.consists. Since the cylinder is also perpendicular to the handle and the magazine at right angles to the Is arranged cylinder, brings the rotatability of the cylinder in surgical applications Advantage with itself, because the magazine is an obstacle in any rotational position anyway, in which it can tight application of an ejection element contained in the cylinder to the wound impaired.

Die Aufgabe der vorliegenden Erfindung ist es, ein bequem zu handhabendes chirurgisches Klammerinstrument zum Klammern von Haut- und Gewebeeinschnitten zu schaffen, das sich leichter dem Verlauf des zu klammernden Schnittes anpassen läßt.The object of the present invention is to provide a surgical stapling instrument that is easy to use for stapling skin and tissue incisions that are easier to follow the course of the clinging cut can be adjusted.

Kolben 136. Schließlich enthält das Element 108 einen im Zylinder 284 gleitbaren, mittels einem O-Ring 150 abgedichteten und mit der zentralen Achse 152 verschraubten Hauptkolben 148 sowie einer diesen Kolben beeinflussende Schraubenfeder 154. Piston 136. Finally, the element 108 contains a main piston 148 which can slide in the cylinder 284, is sealed by means of an O-ring 150 and screwed to the central axis 152, as well as a helical spring 154 influencing this piston.

Wenn der Chirurg einen Auslöser 158 niederdrückt, wird ein Hammer ausgelöst, um auf den Kolben 122 zu schlagen und dadurch CO₂-GaS durch die Bohrung 118 und durch den Anschlag 130 entweichen zu lassen. Das Gas wirkt mit beträchtlicher Kraft auf den Hauptkolben 148 ein und verschiebt damit die Achse 152 mit dem Antriebselement 66. Dadurch wird eine Klammer aus dem vorderen Ende der Patrone 10 getrieben.When the surgeon depresses a trigger 158 , a hammer is triggered to strike the piston 122 _{and thereby allow CO 2} gas to escape through the bore 118 and through the stop 130 . The gas acts on the main piston 148 with considerable force, thereby displacing the axis 152 with the drive element 66. A staple is thereby driven out of the front end of the cartridge 10 .

Erfindungsgemäß soll das, Ausstoßende der Palrone 10 frei rotierbar sein, um das Anstellen an schwerer zugängliche Wunden zu erleichtern. Zu diesem Zweck sieht die Erfindung vor, daß das kegelstumpfförmige Kupplungsstück 290 mit einem Ansatz 292 in der Stirnwand 282 des Griffteilelementes 108 drehbar angeordnet ist. Eine Mutler 2% ist derart auf das durch die Wand 282 gesteckte Ende des Ansatzes 292 aufgeschraubt, daß ein geringer Absland zwischen der Wand und der Mutter verbleibt.According to the invention, the ejection end of the pallet 10 should be freely rotatable in order to make it difficult to get in contact with it to ease accessible wounds. For this purpose, the invention provides that the frustoconical Coupling piece 290 with a shoulder 292 in the end wall 282 of the handle part element 108 is rotatable is arranged. A mutler 2% is in this way on the end of the projection 292 which is inserted through the wall 282 unscrewed so that a small amount of land remains between the wall and the nut.

Die zentrale Achse 152 ist in eintm Kanu! 298 des Kupplungsstückes verschiebbar angeordnet, wobei das Kupplungsstück bei 299 derart abgeschnitten ist, daß es die Hutrone 10 aufnehmen kunn und daß sich das Antriebselement 66 aus dem Kanal 298 erstreckt.The central axis 152 is in a canoe! 298 des Coupling slidably arranged, the coupling piece being cut off at 299 so that it the hat tron 10 and that the drive member 66 extends out of the channel 298.

Hierzu 2 Blatt ZeichnungenFor this purpose 2 sheets of drawings

Claims

Claim:

Surgical stapling instrument for stapling skin and tissue sections with a drive device for the handle part to be ejected from a magazine and containing staples to be deformed between a plunger and an abutment, which is provided at its front end with a coupling piece arranged in extension of the handle part for receiving an exchangeable staple magazine is, characterized in that the coupling piece (290) is rotatably connected to the handle part about a central axis (152) of the handle part (112).

To solve this problem, the invention provides for a clamp instrument mentioned at the outset that the coupling piece is rotatably connected to the handle part about a central axis of the handle part, S This ensures that the. To be attached to the coupling piece before use Interchangeable magazine can be rotated at any angle to accommodate the surgeon his work is made easier, the magazine to a

ίο to make a wound that is lying comfortably.

An embodiment of the stapling instrument according to the invention is shown in the description below explained in more detail with reference to the drawings. It shows

1 shows a side view of a gas-powered stapling instrument, and

2 shows a cross section through the front end on an enlarged scale.
The stapling instrument shown consists of a handle part 12 which contains drive devices 100 in order to eject the staples from an exchangeable staple magazine 10, which staples are deformed between a plunger arranged in the magazine and an abutment. At the front end of the handle part 12 there is a coupling piece 290 in order to receive the magazine, which is preferably designed as a pre-sterilized single-use cartridge. In the operating room, the cartridge 10 is removed from its sealed packaging and, as in FIG. 1, with it

The invention relates to a surgical stapling instrument for stapling skin and tissue cuts with a drive device for the ejected from a magazine and between a ram and a handle part containing brackets to be deformed, at its front end with a coupling piece arranged as an extension of the handle part for receiving a replaceable one Staple magazine is provided. - -

The ejection and deformation of surgical 30 solid lines indicated, obliquely in the clamps is inserted in the basic principle in DT-OS 20 42 158 coupling piece 290. The rear wall 22 of the

Cartridge cap has at least one upright

discloses which, like US Pat. No. 3,662,939, proposes the staples in the magazine by screw threads to advance, which are set in rotation by a rather complicated gear arrangement. In contrast, use a drive shaft of the drive device described in US Pat. No. 3,618,842 and US Pat. No. 3,638,847 only straight thrust devices, which are provided in each magazine itself. Also are Gas drive devices for the staple advance known from DT-OS 21 20 448, for example. Although the The technique of ejecting and deforming the staples has thus already been a relatively long development path has covered, there is still room for improvement.

In a remote area of application, US-PS 28 01 415 describes a stapling instrument for hard fiberboard and plywood, in which the drive device is not housed in the handle part, but in a rotatable cylinder extending perpendicularly to the handle part, on which a staple magazine made in one piece with it right angle is provided. Such instruments are unsuitable for surgical purposes for that reason alone, provided projection 27 which interacts with at least one section of the coupling piece, not shown. To fasten the cartridge 10 , the latter and a U-shaped clamping bracket 74 are pivoted into their dot-dash positions and a clamping screw 76 is tightened.
In the secured position of the cartridge 10, a drive element 66 of a later-to-be-mentioned, rectilinearly movable central axis 152 fits through a slot in the lid of the cartridge 10 to engage with a staple slide or plunger in the cartridge.

The handle part 12 consists of four interconnected cylinder elements 102, 104, 106 and 108, of which the front element 108 carries the coupling piece 290 while extending the handle part. The element 102 includes a CO ₂ cylinder 1 10. The element 104 includes a pierced piercer 112 which communicates with a bore 118 in communication, a cylinder, not shown, for a reciprocable piston 122, a pierced fixed stop 130 for supporting one not shown, the piston 122