INSTRUMENT FOR CIRCULAR SUTURING OF HOLLOW BODY ORGANS

• US 3,552,626 A
• Filed: 04/04/1968
• Issued: 01/05/1971
• Est. Priority Date: 02/02/1968
• Status: Expired due to Term

• Current Assignee: Anatoly Nikolaevich Ozhgikhin, Androsov Pavel Iosifovich, Astafiev Georgy Vasilievich, Babkin Svetoslav Ivanovich, Ivanova Tatiana Lukianovna
• Original Assignee: Anatoly Nikolaevich Ozhgikhin, Androsov Pavel Iosifovich, Astafiev Georgy Vasilievich, Babkin Svetoslav Ivanovich, Ivanova Tatiana Lukianovna
• Inventors: ASTAFIEV GEORGY VASILIEVICH, OZHGIKHIN ANATOLY NIKOLAEVICH, BABKIN SVETOSLAV IVANOVICH, ANDROSOV PAVEL IOSIFOVICH, IVANOVA TATIANA LUKIANOVNA
• Application Number:
  US04/718,728
• Time in Patent Office: 1,006 Days
• US Class Current: 227/76
• CPC Class Codes: A61B 17/1155 Circular staplers comprising a plurality of staples

Abstract

An instrument is provided for placing circular staple anastomoses between the organs of the alimentary canal during a surgical operation. The instrument has an extension tube for engaging interchangeable operating heads of different diameter, the operating heads carrying a staple head and a staple ejector. Additional extension tubes of different length can be added so that the instrument may have variable length to permit placement of anastomoses at different depths.

Claims

1. An instrument for placing circular anastomoses between organs of the alimentary canal, said instrumEnt comprising a body with a cylindrical threaded portion having a groove and a detachable extension tube provided thereon, said tube having ends with aligning means constituted as keys, one being a one-headed key at one end of the tube and the other a double-headed key at the opposite end of the tube, a detachable tubular rod in said extension tube and body and having threads on the forward end thereof and a longitudinal groove receiving the inner end of said double-headed key;

a stem including a pointed threaded forward end, said stem having a longitudinal groove receiving the inner end of said double-headed key, said stem being slidable longitudinally within said rod;

a replaceable supporting head including two parts coupled so that one part is capable of rotating with respect to the other and having in one of its parts a shaped opening corresponding to the shape of the cross section of said threaded end of the stem, and a central threaded opening in its other part which is detachably secured in a definite position on said end of the stem, said other of the parts of the head having depressions for bending the staples;

a replaceable staple head having slots for U-shaped staples and a threaded tailpiece having a longitudinal groove receiving the outer end of said double-headed key for securing said staple head at the end of the extension tube in a definite position with respect to said supporting head so that said staple slots are aligned exactly opposite said depressions; and

a slidable cylindrical ejector slidably mounted in said staple head and having a bottom portion with an opening therein for passage of said rod;

a cylindrical knife mounted on said rod; and

means for moving said ejector and knife.

2. An instrument as claimed in claim 1 comprising a nut for securing the replaceable staple head to the detachable extension tube, said nut being freely fitted on said tube and screwed to the threaded tailpiece of the staple head.

3. An instrument as claimed in claim 1, wherein said slidable cylindrical ejector is coupled to the tubular rod directly by the knife screwed on the threaded end of the rod projecting through the opening in the bottom portion of the ejector.

4. An instrument as claimed in claim 1 comprising a nut securing the detachable extension tube to the body, said nut being freely mounted on said tube and screwed to the cylindrical threaded portion of the body.