SURGICAL GRIPPING FORCEPS

• US 20100023050A1
• Filed: 08/23/2007
• Published: 01/28/2010
• Est. Priority Date: 08/30/2006
• Status: Active Grant

• Current Assignee: Karl Storz Se & Co. Kg
• Original Assignee: Karl Storz Se & Co. Kg
• Inventors: Reinauer, Josef, Ganter, Hans
• Granted Patent: US 9,700,335 B2
• Time in Patent Office: Days
• US Class Current: 606/207
• CPC Class Codes: A61B 17/29 Forceps for use in minimally invasive surgery
• CPC Class Codes: A61B 2017/2931 with releasable head
• CPC Class Codes: A61B 2017/2933 camming or guiding means
• CPC Class Codes: A61B 2017/2936 Pins in guiding slots
• CPC Class Codes: A61B 2017/2939 Details of linkages or pivot points

Abstract

Surgical gripping forceps are provided with one or two gripping jaws movable relative to a main body, wherein each moveable one of the gripping jaws has a pivot pin, fixed in position relative to the main body, and a lever arm. The lever arms are articulated via at least one push element. For this purpose each movable one of the gripping jaws has its own pivot pin. From the midline of the main body, the individual pivot pin has at least a distance greater than 38% of the maximum width of the main body or maximum diameter of the main body. The microsurgical gripping forceps operate with customary force for actuating the forceps, and permit a substantial applied clamping force.

Claims

1-13. -13. (canceled)

14. A surgical gripping forceps apparatus, said apparatus comprising:

(a) a main body; and

(b) at least two gripping jaws extending outwardly from said main body, wherein at least one of said gripping jaws is movably arranged relative to said main body, and wherein said at least one movable gripping jaw further comprises;

(i) a pivot pin, fixed in position relative to said main body, said pivot pin having at least a distance from a center line of said main body greater than thirty-eight percent (38%) of one of the maximum width of said main body and a maximum diameter of said main body; and

(ii) a lever arm, wherein said lever arm is articulated via at least one push element.

15. A surgical gripping forceps apparatus, in accordance with claim 14, wherein:

at least one of said gripping jaws is non-movable relative to said main body.

16. A surgical gripping forceps apparatus, in accordance with claim 14, characterized in that each of said gripping jaws extends outward from, and is movably arranged relative to, said main body, each of said gripping jaws comprising:

(a) a pivot axis fixed in place relative to said main body, said pivot axis having a distance from said center line of said main body at least more than thirty-eight percent of a maximum width of said main body or a maximum diameter of said main body; and

(b) a lever arm, each of said lever arms being articulated via at least one push element.

17. A surgical gripping forceps apparatus, in accordance with claim 14, and further comprising:

a push element in said main body, said push element capable of articulating one or more of each of said movable gripping jaws.

18. A surgical gripping forceps apparatus, in accordance with claim 17, wherein:

said push element in said main body is at least twice guided.

19. A surgical gripping forceps apparatus, in accordance with claim 16, wherein:

each of said pivot axes for each of a corresponding movable gripping jaw is arranged parallel to each other of said axes.

20. A surgical gripping forceps apparatus, in accordance with claim 16, wherein:

said pivot axis of each of said movable gripping jaws lies in a plane oriented normal to said center line of said main body.

21. A surgical gripping forceps apparatus, in accordance with claim 16, wherein:

said pivot axis of each of said movable gripping jaws is formed by a pivot pin at a corresponding side of said gripping jaw and a cavity at said main body side.

22. A surgical gripping forceps apparatus, in accordance with claim 21, wherein:

said cavity at said main body side only partly encloses said pivot pin at said corresponding side of said gripping jaw.

23. A surgical gripping forceps apparatus, in accordance with claim 21, wherein:

each of said movable gripping jaws comprises;

a guide cavity proximate said pivot pin, and

wherein said guide cavity has at least one curved edge forming a circular arc about said pivot axis of said pivot pin.

24. A surgical gripping forceps apparatus, in accordance with claim 23, wherein:

said edge of said guide cavity is braced against a guide bolt mounted in said main body.

25. A surgical gripping forceps apparatus, in accordance with claim 14, wherein:

said main body and said push element form a sliding pair, and wherein said push element is non-twistably mounted in said main body.

26. A surgical gripping forceps apparatus, in accordance with claim 14, wherein:

said main body, said push element, and said gripping jaws form at least one rocking slider crank, an individual link cavity of each of said slider cranks being each arranged on a lever arm of a respective movable one of said gripping jaws.

27. A surgical gripping forceps apparatus, in accordance with claim 14, and further comprising:

a push element in said main body, said push element capable of articulating one or more of each of said movable gripping jaws; and

said push element in said main body is at least twice guided.

28. A surgical gripping forceps apparatus, in accordance with claim 14, characterized in that each of said gripping jaws extends outward from, and is movably arranged relative to, said main body, each of said gripping jaws comprising:

(a) a pivot axis fixed in place relative to said main body, said pivot axis having a distance from said center line of said main body at least more than thirty-eight percent of a maximum width of said main body or a maximum diameter of said main body; and

(b) a lever arm, each of said lever arms being articulated via at least one push element,

said pivot axis of each of said movable gripping jaws is formed by a pivot pin at a corresponding side of said gripping jaw and a cavity at said main body side; and

wherein said cavity at said main body side only partly encloses said pivot pin at said corresponding side of said gripping jaw.

29. A surgical gripping forceps apparatus, in accordance with claim 14, characterized in that each of said gripping jaws extends outward from, and is movably arranged relative to, said main body, each of said gripping jaws comprising:

(a) a pivot axis fixed in place relative to said main body, said pivot axis having a distance from said center line of said main body at least more than thirty-eight percent of a maximum width of said main body or a maximum diameter of said main body; and

(b) a lever arm, each of said lever arms being articulated via at least one push element;

said pivot axis of each of said movable gripping jaws is formed by a pivot pin at a corresponding side of said gripping jaw and a cavity at said main body side; and

each of said movable gripping jaws comprises;

a guide cavity proximate said pivot pin,

wherein said guide cavity has at least one curved edge forming a circular arc about said pivot axis of said pivot pin; and

said edge of said guide cavity is braced against a guide bolt mounted in said main body.

30. A forceps apparatus, said apparatus comprising:

a main body, said main body further comprising;

(a) a tube segment;

said tube segment comprising;

(i) a central bore in which a push element is guided therethrough;

(ii) a housing tube; and

(iii) a plurality of adapter elements located at a rear end of said tube segment and further situated in a fixed relationship to each one of said plurality of adapter elements, and wherein said main body is detachably fastened to said housing tube; and

(b) a fork segment, said fork segment having at least two fork arms, each of said fork arms are arranged on said tube segment and capable of gripping an object under direction of an apparatus user; and

(c) wherein said main body is detachably fastened to said housing tube by means of a quarter-turn fastener.

31. A forceps apparatus, in accordance with claim 30, wherein:

each of said fork segments extends outward from, and is movably arranged relative to, said main body, each of said fork segments comprising;

(a) a pivot axis fixed in place relative to said main body, said pivot axis having a distance from said center line of said main body at least more than thirty-eight percent of a maximum width of said main body or a maximum diameter of said main body; and

(b) a lever arm, each of said lever arms being articulated via at least one push element.

33. A surgical gripping forceps apparatus, in accordance with claim 31, wherein:

said main body, said push element, and said gripping jaws form at least one rocking slider crank, an individual link cavity of each of said slider cranks being each arranged on a lever arm of a respective movable one of said gripping jaws.

32. A surgical gripping forceps apparatus, said apparatus comprising:

(a) a main body; and

(b) at least two gripping jaws extending outwardly from said main body, wherein at least one of said gripping jaws is movably arranged relative to said main body, and wherein said at least one movable gripping jaw further comprises;

(i) a pivot pin, fixed in position relative to said main body, said pivot pin having at least a distance from a center line of said main body greater than thirty-eight percent of the maximum width of said main body or a maximum diameter of said main body; and

(ii) a lever arm, wherein said lever arm is articulated via at least one push element; and

(c) a push element in said main body, said push element capable of articulating one or more of each of said movable gripping jaws.