Force-developing device for cutting forceps
First Claim
1. A hand-held device comprising:
- two jaw elementsa first handle and a second handle;
a jaw formed of two link rods cranked in opposite directions and articulated, at their cranked part, independently of one another, each of the two jaw elements being at an end of a respective one of said two link rods;
a link rods system articulated with the two link rods of the jaw, the jaw and the link rods system having substantially a shape of a deformable quadrilateral;
a piston connected by its front end to the link rods system at one vertex of the link rods system opposite the vertex of the jaw, the piston being slidingly housed inside the first handle;
means for holding the second handle relative to the first handle, said means for holding being integral with the piston and bearing against the first handle;
complementary means for mechanically driving the piston inside the first handle, said complementary means being borne by each of the two handles; and
means for preventing the return of the piston, said means for preventing being borne by the first handle;
the complementary means and the means for preventing acting alternately on the piston so that by successively moving the second handle towards and away from the first handle the piston is moved forwards and the jaw is deformed by means of the link rods system, so that the two jaw elements are brought towards each other.
1 Assignment
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Accused Products
Abstract
A force-developing device for forceps of the type equipped with two jaw elements (2, 3) and with two handles (4, 5) includes a jaw (6A). A link rods system (6B) is articulated with the jaw (6A). A front end of a piston (7) is connected to the link rods system (6B). The piston is housed slidingly inside a first handle (4). A yoke (8) is provided for holding the second handle (5) relative to the first handle (4). A pair of complementary racks (9) mechanically drive the piston (7), the pair being borne by each of the two handles (4, 5). A trigger catch and a rack for preventing the return of the piston are borne by the first handle (4). The pair of complementary racks (9) for driving the piston (7), the trigger catch, and the rack acts alternately on the piston so that by successively moving the second handle (5) towards and away from the first handle (4), the piston (7) is moved forwards and the jaw (6A) is deformed by means of the link rods system (6B). The successive movement brings the two jaw elements (2, 3) towards each other.
868 Citations
14 Claims
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1. A hand-held device comprising:
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two jaw elements a first handle and a second handle; a jaw formed of two link rods cranked in opposite directions and articulated, at their cranked part, independently of one another, each of the two jaw elements being at an end of a respective one of said two link rods; a link rods system articulated with the two link rods of the jaw, the jaw and the link rods system having substantially a shape of a deformable quadrilateral; a piston connected by its front end to the link rods system at one vertex of the link rods system opposite the vertex of the jaw, the piston being slidingly housed inside the first handle; means for holding the second handle relative to the first handle, said means for holding being integral with the piston and bearing against the first handle; complementary means for mechanically driving the piston inside the first handle, said complementary means being borne by each of the two handles; and means for preventing the return of the piston, said means for preventing being borne by the first handle; the complementary means and the means for preventing acting alternately on the piston so that by successively moving the second handle towards and away from the first handle the piston is moved forwards and the jaw is deformed by means of the link rods system, so that the two jaw elements are brought towards each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification