Dissector device

• US 4,815,465 A
• Filed: 03/14/1988
• Issued: 03/28/1989
• Est. Priority Date: 08/18/1986
• Status: Expired due to Fees

• Current Assignee: Alvarado, Alfredo
• Original Assignee: Alvarado, Alfredo
• Inventors: Alvarado, Alfredo
• Primary Examiner(s): Rosenbaum, C. Fred
• Assistant Examiner(s): Kartchner, Gene B.
• Application Number:
  US07/170,071
• Time in Patent Office: 379 Days
• Field of Search: 128/305, 128/305.5, 128/335, 128/325-326, 128/334 R, 128/329 R
• US Class Current: 606/139
• CPC Class Codes: A61B 17/128 for applying or removing clamps or clips
• CPC Class Codes: A61B 17/32 Surgical cutting instruments A61B18/042 takes precedence; suture cutters A61B17/0467; instruments for ligaturing or cutting A61B17/128; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133

Abstract

A dissector device to be incorporated into the anvil-jaw of a ligation and division stapler to facilitate its use. Such device is inserted with ease through a relatively small opening in the neighboring tissues of the blood vessels to be ligated and divided. By using the dissector device the surgical operation is easier, faster and safer than when using the prior art ligation and division stapler.

Claims

1. A surgical stapling instrument having an anvil-jaw at a distal end of the instrument, comprising means for ligation and division of blood vessels and means for dissecting the tissues around the vessels, said dissecting means disposed at the distal end of the instrument, said dissecting means including an upstanding substantially pyramid-shaped dissector device intimately connected to and framing part of the anvil-jaw, and, said pyramid-shaped dissector having a base which is substantially quadrilateral and a vertex of the pyramid facing away from said anvil-jaw.

2. Surgical instrument according to claim 1, wherein said vertex is slightly truncated and slightly rounded.

3. Surgical instrument according to claim 1 wherein said dissector device is made of metal.

4. Surgical instrument according to claim 3, wherein said metal is surgical steel.

5. Surgical instrument according to claim 3, wherein said ligation and division means include:

two pushers for ligation of said vessels and a dividing knife disposed between said pushers for dividing the vessels, and squeezing handles disposed at the proximal end of the instrument for activatig the instrument.