US5746770A — Endoscopic retriever

Claim 1

Independent Claim 300 words

An endoscopic retriever comprising: an endoscope; a retriever, said retriever having a pair of opposing grasping arms, said grasping arms comprising a pair of grasping jaws, said grasping arms being positioned around an endoscope; at least one illuminating light guide fiber, said at least one light guide fiber travelling at least partly through at least one of said grasping arms, said at least one guide fiber passing perpendicular to a length of at least one of said grasping jaws through at least one of said grasping jaws, terminating in at least one of said grasping jaws at right angles to the plane of one of said grasping jaws; a handle, said handle having at least three sections, said three sections being a distal handle section which is integral with said grasping arms, a middle rotatable handle section, and a proximal handle section; distal slots positioned in said distal handle section; at least two splints, a distal end of said at least two splints surrounding a distal end of said grasping arms, and said at least two splints after passing through said distal slots positioned in said distal handle section having a common threaded circular proximal section, said middle rotatable handle section further comprising means to advance the splints along a length of the grasping arms to reversibly close the grasping jaws as said middle rotatable handle rotates about a longitudinal axis of said at least two splints, said means of said middle rotatable handle section being in communication with said common threaded circular proximal section of said at least two splints to reversibly advance said splints along said length of said graspings arms: and wherein said endoscope is positioned between said grasping arms, such that illuminating light passes angularly from a plane of at least one of said grasping jaws.

Claim 2

Dependent Claim 300 words

An endoscopic retriever comprising: an endoscope; a retriever, said retriever having a pair of opposing grasping arms, said grasping arms comprising a pair of grasping jaws, said grasping arms being positioned around an endoscope; at least one illuminating light guide fiber, said at least one light guide fiber travelling at least partly through at least one of said grasping arms, said at least one guide fiber passing perpendicular to a length of at least one of said grasping jaws through at least one of said grasping jaws, terminating in at least one of said grasping jaws at right angles to the plane of one of said grasping jaws; a handle, said handle having at least three sections, said three sections being a distal handle section which is integral with said grasping arms, a middle rotatable handle section, and a proximal handle section; distal slots positioned in said distal handle section; at least two splints, a distal end of said at least two splints surrounding a distal end of said grasping arms, and said at least two splints after passing through said distal slots positioned in said distal handle section having a common threaded circular proximal section, said middle rotatable handle section further comprising means to advance the splints along a length of the grasping arms to reversibly close the grasping jaws as said middle rotatable handle rotates about a longitudinal axis of said at least two splints, said means of said middle rotatable handle section being in communication with said common threaded circular proximal section of said at least two splints to reversibly advance said splints along said length of said graspings arms: and wherein said endoscope is positioned between said grasping arms, such that illuminating light passes angularly from a plane of at least one of said grasping jaws.

Claim 3

Dependent Claim 36 words

The endoscopic retriever of claim 1, wherein the grasping arms are comprised of light conducting plastic, except for an inner surface of each of said jaws which is uncoated, to allow light to exit said jaws.

Claim 4

Dependent Claim 21 words

The endoscopic retriever of claim 1, wherein an outer surface of each of said grasping arms is coated with a metal.

Claim 5

Dependent Claim 76 words

The endoscopic retriever of claim 1, wherein said grasping jaws further comprise a plurality of teeth, said teeth being positioned on an inner surface of said grasping jaws, said teeth being positioned on each said grasping jaw, said teeth of each said jaw being positioned opposite to each other, said teeth being spaced and rounded to provide maximum grasping force and minimal trauma to the end of a tendon, nerve, or other body part being grasped.

Claim 6

Dependent Claim 14 words

The endoscopic retriever of claim 4, wherein the teeth of said jaws are roughened.

Claim 7

Dependent Claim 16 words

The endoscopic retriever of claim 1, further comprising an irrigating channel incorporated into the endoscopic retriever.

Claim 8

Dependent Claim 19 words

The endoscopic retriever of claim 1, wherein said endoscope is positioned between and set back from said grasping arms.

Claim 9

Dependent Claim 119 words

The endoscopic retriever of claim 1, further comprising: a torque handle to control the grasping force of the jaws of the retriever, said torque handle being the middle rotatable handle section, and a floating ring, said middle rotatable handle section being in communication with said floating ring, said floating ring having a threaded inner part, wherein when the middle rotatable handle section is rotated, the floating ring rotates, and the inner part of the rotating floating ring, in communication with the threaded proximal end of the splints, causes the splints to reversibly forwardly advance, along the length of the grasping arms, causing the grasping arms to reversibly close around a body part upon which an operation is being conducted.

Claim 10

Dependent Claim 27 words

The endoscopic retriever of claim 8, wherein said splints are resilient and flexible, thereby allowing said retriever to conform to the actual shape of the tendon sheath.

Claim 11

Dependent Claim 34 words

The endoscopic retriever of claim 9, wherein said splints are constructed of a material selected from the group consisting of thin walled stainless steel, an Austenitic nickel-titanium tubing, and closely wound steel spring wire.

Claim 12

Dependent Claim 14 words

The endoscopic retriever of claim 9, wherein said retriever has an elliptical cross section.

Claim 13

Dependent Claim 21 words

The endoscopic retriever of claim 8, wherein said splints are formable, enabling the retriever to be bent to form a curvature.

Claim 14

Dependent Claim 18 words

The endoscopic retriever of claim 12, wherein said splints are constructed of a Martensitic crystal form of nickel-titanium.

Claim 15

Dependent Claim 18 words

The endoscopic retriever of claim 1, wherein the endoscopic retriever, exclusive of the endoscope, is comprised of plastic.

Claim 16

Dependent Claim 17 words

The endoscopic retriever of claim 1, wherein the entire retriever is less than one centimeter in diameter.

Claim 17

Dependent Claim 16 words

The endoscopic retriever of claim 1, wherein said retriever is in the form of a forceps.

Claim 18

Dependent Claim 113 words

The endoscopic retriever of claim 8, wherein said torque handle further comprises at least one ball screw, positioned in the middle rotatable handle section and in communication with said floating ring, wherein when the middle rotatable handle is rotated, the at least one said ball screw rotates with the handle, the floating ring rotates with the ball screw, the inner part of the floating ring, in communication with the threaded proximal end of the splints, causes the splints to reversibly forwardly advance, causing the splints to advance forwardly along the length of the grasping arms, causing the grasping arms to reversibly close around a body part upon which an operation is being conducted.

Claim 19

Dependent Claim 251 words

An endoscopic retriever, comprising: an endoscope; a retriever, said retriever having a pair of opposing grasping arms, said grasping arms comprising a pair of grasping jaws, said grasping arms being positioned around an endoscope; at least one illuminating light guide fiber, said at least one light guide fiber travelling at least partly through at least one of said grasping arms, said at least one guide fiber passing perpendicular to a length of at least one of said grasping jaws through at least one of said grasping jaws, terminating in at least one of said grasping jaws at right angles to the plane of at least one of said grasping jaws; and a scissor grip mechanism to cause said grasping jaws to close, said scissor grip mechanism comprising: a grip; a trigger handle, said grip attached to said trigger handle; a resilient member positioned between the grip and the trigger handle causing the release of the grasping jaws when the grip is released; at least two splints, wherein a distal end of said at least two splints surrounds a distal end of said grasping arms; and a ring encompassing the splints, said ring positioned near the proximal end of said splints, said ring positioned in a clevis near the top of the grip, forming a clevis lever, wherein when said grip is squeezed, said ring is advanced distally against the splints, causing the splints to advance, resulting in closure of said grasping jaws located at the distal end of said grasping arms.

Claim 20

Dependent Claim 251 words

An endoscopic retriever, comprising: an endoscope; a retriever, said retriever having a pair of opposing grasping arms, said grasping arms comprising a pair of grasping jaws, said grasping arms being positioned around an endoscope; at least one illuminating light guide fiber, said at least one light guide fiber travelling at least partly through at least one of said grasping arms, said at least one guide fiber passing perpendicular to a length of at least one of said grasping jaws through at least one of said grasping jaws, terminating in at least one of said grasping jaws at right angles to the plane of at least one of said grasping jaws; and a scissor grip mechanism to cause said grasping jaws to close, said scissor grip mechanism comprising: a grip; a trigger handle, said grip attached to said trigger handle; a resilient member positioned between the grip and the trigger handle causing the release of the grasping jaws when the grip is released; at least two splints, wherein a distal end of said at least two splints surrounds a distal end of said grasping arms; and a ring encompassing the splints, said ring positioned near the proximal end of said splints, said ring positioned in a clevis near the top of the grip, forming a clevis lever, wherein when said grip is squeezed, said ring is advanced distally against the splints, causing the splints to advance, resulting in closure of said grasping jaws located at the distal end of said grasping arms.

Claim 21

Dependent Claim 289 words

An endoscopic retriever comprising: an endoscope; a retriever, said retriever having a pair of opposing grasping arms, said grassing arms comprising a pair of grasping jaws, said grasping arms being positioned around an endoscope; a handle, said handle having at least three sections, said three sections being a distal handle section which is integral with said grasping arms, a middle rotatable handle section, and a proximal handle section, said endoscope positioned between said pair of opposing grasping arms; distal slots positioned in said distal handle section; at least two splints, a distal end of said at least two splints surrounding a distal end of said grasping arms, said at least two splints having a common threaded circular proximal section after passing through said distal slots positioned in said distal handle section said at least two splints; a torque handle to control the grasping force of the jaws of the retriever, said torque handle being the middle rotatable handle section, said torque handle comprising at least one ball screw positioned in said middle rotatable handle section; and a floating ring, said floating ring having a threaded inner part said middle rotatable handle section being in communcation with said floating ring, such that said at least one ball screw interacts with said floating ring, wherein when the middle rotatable handle section is rotated, the ball screw rotates with the middle rotatable handle section, the floating ring rotates with the ball screw, the inner part of the rotating floating ring, in communication with the threaded proximal end of the splints, causes the splints to reversibly forwardly advance along the length of the grasping arms, causing the grasping arms to reversibly close around a body part upon which an operation is being conducted.

Claim 22

Dependent Claim 289 words

An endoscopic retriever comprising: an endoscope; a retriever, said retriever having a pair of opposing grasping arms, said grassing arms comprising a pair of grasping jaws, said grasping arms being positioned around an endoscope; a handle, said handle having at least three sections, said three sections being a distal handle section which is integral with said grasping arms, a middle rotatable handle section, and a proximal handle section, said endoscope positioned between said pair of opposing grasping arms; distal slots positioned in said distal handle section; at least two splints, a distal end of said at least two splints surrounding a distal end of said grasping arms, said at least two splints having a common threaded circular proximal section after passing through said distal slots positioned in said distal handle section said at least two splints; a torque handle to control the grasping force of the jaws of the retriever, said torque handle being the middle rotatable handle section, said torque handle comprising at least one ball screw positioned in said middle rotatable handle section; and a floating ring, said floating ring having a threaded inner part said middle rotatable handle section being in communcation with said floating ring, such that said at least one ball screw interacts with said floating ring, wherein when the middle rotatable handle section is rotated, the ball screw rotates with the middle rotatable handle section, the floating ring rotates with the ball screw, the inner part of the rotating floating ring, in communication with the threaded proximal end of the splints, causes the splints to reversibly forwardly advance along the length of the grasping arms, causing the grasping arms to reversibly close around a body part upon which an operation is being conducted.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2001-05-04	2001-11-03	2002-05-05	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2005-05-04	2005-11-03	2006-05-05	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2009-05-04	2009-11-03	2010-05-05	$7700.00	Window Closed / Lapsed

Endoscopic retriever

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