US5842865A — Self-tapping implant with multiple concave tappin…

Claim 1

Independent Claim 68 words

A self-tapping implant for permanently anchoring in bone, comprising: a generally cylindrically shaped body having an externally threaded middle section and an end adjacent said middle section, wherein said end includes three separate flutes disposed around said body with each of said flutes having three separate and distinct cavities for tapping said bone, wherein said three cavities are continuous for directing bone chips into each of said cavities.

Claim 2

Dependent Claim 68 words

A self-tapping implant for permanently anchoring in bone, comprising: a generally cylindrically shaped body having an externally threaded middle section and an end adjacent said middle section, wherein said end includes three separate flutes disposed around said body with each of said flutes having three separate and distinct cavities for tapping said bone, wherein said three cavities are continuous for directing bone chips into each of said cavities.

Claim 3

Dependent Claim 54 words

The self-tapping implant of claim 1 in which: a first cavity has a generally concave configuration with a primary cutting edge for removing bone chips from said bone and being disposed along a longitudinal axis of said body; and a second cavity is adjacent said first cavity to provide clearance for said bone chips.

Claim 4

Dependent Claim 30 words

The self-tapping implant of claim 1 in which: a first cavity includes a primary cutting edge; and a second cavity is adjacent said first cavity and has a concave configuration.

Claim 5

Dependent Claim 32 words

The self-tapping implant of claim 3 in which said cutting edge removes bone chips from said bone and said bone chips move from said first cavity and then into said second cavity.

Claim 6

Dependent Claim 45 words

The self-tapping implant of claim 1 in which: a first cavity includes a primary cutting edge for removing bone chips from said bone; a second cavity is adjacent said first cavity and accumulates said bone chips; and a third cavity is adjacent said first cavity.

Claim 7

Dependent Claim 21 words

The self-tapping implant of claim 5 in which said third cavity has an edge that removes bone chips from said bone.

Claim 8

Dependent Claim 20 words

The self-tapping implant of claim 5 in which said third cavity directs said bone chips away from said cutting edge.

Claim 9

Dependent Claim 77 words

An implant, comprising: a generally elongated body having external threads disposed along a midsection and a tapping end adjacent said midsection, wherein said tapping end taps bone as said implant is screwed into said bone, said tapping end includes at least two flutes each having a first cavity with a primary cutting edge and a second cavity adjacent to and connected to said first cavity and having a secondary cutting edge continuous with said primary cutting edge.

Claim 10

Dependent Claim 77 words

An implant, comprising: a generally elongated body having external threads disposed along a midsection and a tapping end adjacent said midsection, wherein said tapping end taps bone as said implant is screwed into said bone, said tapping end includes at least two flutes each having a first cavity with a primary cutting edge and a second cavity adjacent to and connected to said first cavity and having a secondary cutting edge continuous with said primary cutting edge.

Claim 11

Dependent Claim 20 words

The implant of claim 8 which said first cavity has a concave configuration and an edge for cutting said bone.

Claim 12

Dependent Claim 69 words

The implant of claim 8 in which: said first cavity has an elongated configuration extending along a longitudinal axis of said implant, and said cutting edge is disposed along one side of said first cavity and positioned to remove said bone chips from said bone as said implant is screwed into said bone; and said second cavity has a volume for accumulating said bone chips removed from said bone.

Claim 13

Dependent Claim 30 words

The implant of claim 8 further comprising an elongated third cavity adjacent said first cavity, wherein said third cavity has a volume for accumulating bone chips removed from said bone.

Claim 14

Dependent Claim 33 words

The implant of claim 8 in which: said tapping end includes a spherical tip; and said flutes are symmetrically positioned around said tapping end and extend from said spherical tip toward said midsection.

Claim 15

Dependent Claim 52 words

A self-tapping implant for anchoring in bone, comprising: an elongated body having a threaded midsection and a tapping end including at least one flute formed having at least two separate and distinct cavities for tapping bone, wherein said two cavities are connected together for directing bone chips through each of said cavities.

Claim 16

Dependent Claim 52 words

A self-tapping implant for anchoring in bone, comprising: an elongated body having a threaded midsection and a tapping end including at least one flute formed having at least two separate and distinct cavities for tapping bone, wherein said two cavities are connected together for directing bone chips through each of said cavities.

Claim 17

Dependent Claim 53 words

The self-tapping implant of claim 13 in which said two separate and distinct cavities include: a first cavity having a cutting edge for removing bone chips from said bone as said implant is screwed into said bone; and a second cavity being disposed next to said first cavity to collect said bone chips.

Claim 18

Dependent Claim 21 words

The self-tapping implant of claim 14 in which said bone chips move away from said cutting edge to said second cavity.

Claim 19

Dependent Claim 15 words

The self-tapping implant of claim 13 in which said two cavities have a concave configuration.

Claim 20

Dependent Claim 118 words

A self-tapping implant for permanently anchoring in bone, comprising: a generally cylindrically shaped body having an externally threaded middle section and an end adjacent said middle section, wherein said end includes three separate flutes disposed around said body with each of said flutes having three separate and distinct cavities for tapping said bone, wherein a first cavity has a generally concave configuration with a primary cutting edge for removing bone chips from said bone and being disposed along a longitudinal axis of said body and having a curvature that directs a smooth flow of bone chips away from said cutting edge, and wherein a second cavity is adjacent said first cavity to provide clearance for said bone chips.

Claim 21

Dependent Claim 118 words

A self-tapping implant for permanently anchoring in bone, comprising: a generally cylindrically shaped body having an externally threaded middle section and an end adjacent said middle section, wherein said end includes three separate flutes disposed around said body with each of said flutes having three separate and distinct cavities for tapping said bone, wherein a first cavity has a generally concave configuration with a primary cutting edge for removing bone chips from said bone and being disposed along a longitudinal axis of said body and having a curvature that directs a smooth flow of bone chips away from said cutting edge, and wherein a second cavity is adjacent said first cavity to provide clearance for said bone chips.

Claim 22

Dependent Claim 91 words

An implant, comprising: a generally elongated body having external threads disposed along a midsection and a tapping end adjacent said midsection, wherein said tapping end taps bone as said implant is screwed into said bone, said tapping end includes at least two flutes each having a first cavity with a primary cutting edge and a second cavity adjacent said first cavity, wherein said second cavity has a spiral point surface that removes bone chips from said bone and directs said bone chips away from said cutting edge of said first cavity.

Claim 23

Dependent Claim 91 words

An implant, comprising: a generally elongated body having external threads disposed along a midsection and a tapping end adjacent said midsection, wherein said tapping end taps bone as said implant is screwed into said bone, said tapping end includes at least two flutes each having a first cavity with a primary cutting edge and a second cavity adjacent said first cavity, wherein said second cavity has a spiral point surface that removes bone chips from said bone and directs said bone chips away from said cutting edge of said first cavity.

Claim 24

Dependent Claim 54 words

The implant of claim 18 in which said first cavity has an elongated configuration extending along a longitudinal axis of said implant, and said primary cutting edge is disposed along one side of said first cavity and positioned to remove said bone chips from said bone as said implant is screwed into said bone.

Claim 25

Dependent Claim 22 words

The implant of claim 18 in which said second cavity has a volume for accumulating said bone chips removed from said bone.

Claim 26

Dependent Claim 26 words

The implant of claim 18 in which said flutes are symmetrically positioned around said tapping end and extend from said spiral point surface toward said midsection.

Claim 27

Dependent Claim 25 words

The implant of claim 18 in which said primary cutting edge removes bone chips from said bone as said implant is screwed into said bone.

Claim 28

Dependent Claim 14 words

The implant of claim 18 in which said two cavities have a concave configuration.

Claim 29

Dependent Claim 15 words

The implant of claim 18 in which said second cavity is below said first cavity.

Claim 30

Dependent Claim 18 words

The implant of claim 18 in which said second cavity has a common border with said first cavity.

Claim 31

Dependent Claim 26 words

The implant of claim 18 in which said second cavity has a lower end with a spherical configuration and an upper end with a conical configuration.

Claim 32

Dependent Claim 17 words

The implant of claim 18 in which said second cavity and said first cavity cut bone simultaneously.

Claim 33

Dependent Claim 23 words

The implant of claim 18 in which said second cavity has a secondary cutting edge that is connected to said primary cutting edge.

Claim 34

Dependent Claim 59 words

The implant of claim 18 in which said second cavity is parallel to said first cavity with a common border extending between said first and second cavities such that when said primary cutting edge cuts bone chips from said bone said bone chips move away from said primary cutting edge, over said common border, and into said second cavity.

Claim 35

Dependent Claim 88 words

An implant, comprising: a generally elongated body having external threads disposed along a midsection and a tapping end adjacent said midsection, wherein said tapping end taps bone as said implant is screwed into said bone, said tapping end has a spherical end and includes at least two flutes intersecting said spherical end and each having a first cavity with a primary cutting edge and a second cavity adjacent said first cavity such that said two cavities are connected together to direct bone chips through each of said cavities.

Claim 36

Dependent Claim 88 words

An implant, comprising: a generally elongated body having external threads disposed along a midsection and a tapping end adjacent said midsection, wherein said tapping end taps bone as said implant is screwed into said bone, said tapping end has a spherical end and includes at least two flutes intersecting said spherical end and each having a first cavity with a primary cutting edge and a second cavity adjacent said first cavity such that said two cavities are connected together to direct bone chips through each of said cavities.

Claim 37

Dependent Claim 54 words

The implant of claim 30 in which said first cavity has an elongated configuration extending along a longitudinal axis of said implant, and said primary cutting edge is disposed along one side of said first cavity and positioned to remove said bone chips from said bone as said implant is screwed into said bone.

Claim 38

Dependent Claim 16 words

The implant of claim 31 in which said second cavity is parallel to said first cavity.

Claim 39

Dependent Claim 22 words

The implant of claim 30 in which said second cavity has a volume for accumulating said bone chips removed from said bone.

Claim 40

Dependent Claim 25 words

The implant of claim 30 in which said flutes are symmetrically positioned around said tapping end and extend from said spherical end toward said midsection.

Claim 41

Dependent Claim 36 words

The implant of claim 30 in which said second cavity has a secondary cutting edge, and said primary and secondary cutting edges remove bone chips from said bone as said implant is screwed into said bone.

Claim 42

Dependent Claim 14 words

The implant of claim 30 in which said two cavities have a concave configuration.

Claim 43

Dependent Claim 15 words

The implant of claim 30 in which said second cavity is below said first cavity.

Claim 44

Dependent Claim 18 words

The implant of claim 30 in which said second cavity has a common border with said first cavity.

Claim 45

Dependent Claim 26 words

The implant of claim 30 in which said second cavity has a lower end with a spherical configuration and an upper end with a conical configuration.

Claim 46

Dependent Claim 25 words

The implant of claim 30 in which said second cavity has a secondary cutting edge and said primary and secondary cuffing edges cut bone simultaneously.

Claim 47

Dependent Claim 23 words

The implant of claim 30 in which said second cavity has a secondary cutting edge that is connected to said primary cutting edge.

Claim 48

Dependent Claim 22 words

The implant of claim 30 in which said primary cutting edge removes said bone chips and directs them into said second cavity.

Claim 49

Dependent Claim 66 words

A self-tapping implant for anchoring in bone, comprising: an elongated body having a threaded midsection and a tapping end including at least one flute formed having at least two separate and distinct cavities for tapping bone, wherein said first cavity has an elongated configuration with a cutting edge disposed along one side and said second cavity has a somewhat spherical configuration that includes another cutting edge.

Claim 50

Dependent Claim 66 words

A self-tapping implant for anchoring in bone, comprising: an elongated body having a threaded midsection and a tapping end including at least one flute formed having at least two separate and distinct cavities for tapping bone, wherein said first cavity has an elongated configuration with a cutting edge disposed along one side and said second cavity has a somewhat spherical configuration that includes another cutting edge.

Claim 51

Dependent Claim 22 words

The implant of claim 43 in which said second cavity has a volume for accumulating said bone chips removed from said bone.

Claim 52

Dependent Claim 45 words

The implant of claim 43 in which: said first cavity has a cutting edge for removing bone chips from said bone as said implant is screwed into said bone; and said second cavity is disposed next to said first cavity to collect said bone chips.

Claim 53

Dependent Claim 20 words

The implant of claim 43 in which said bone chips move away from said cutting edge to said second cavity.

Claim 54

Dependent Claim 29 words

The implant of claim 43 in which said cutting edge of said second cavity is disposed below said first cavity to cut bone before said first cavity cuts bone.

Claim 55

Dependent Claim 19 words

The implant of claim 43 in which said cutting edges of said first and second cavities cut bone simultaneously.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2001-11-30	2002-06-01	2002-12-01	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2005-11-30	2006-06-01	2006-12-01	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2009-11-30	2010-06-01	2010-12-01	$7700.00	Window Closed / Lapsed

Self-tapping implant with multiple concave tapping channels

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