US6599293B2 — Delivery device for bone cement

Claim 1

Independent Claim 104 words

A delivery apparatus for injecting cement from a cartridge, the apparatus comprising: a cradle with an axial cavity extending therethrough for supporting the cartridge; a cartridge dispensing mechanism coupled to the cradle; a threaded rod extending into the axial cavity of the cradle; a button defining an axial bore having threads, the button being moveable into and out of threaded engagement with the threaded rod; and at least one base formed between threads of the button, wherein a top edge of the threads of the threaded rod are in contacting with the base while the button is in threaded engagement with the threaded rod.

Claim 2

Dependent Claim 104 words

A delivery apparatus for injecting cement from a cartridge, the apparatus comprising: a cradle with an axial cavity extending therethrough for supporting the cartridge; a cartridge dispensing mechanism coupled to the cradle; a threaded rod extending into the axial cavity of the cradle; a button defining an axial bore having threads, the button being moveable into and out of threaded engagement with the threaded rod; and at least one base formed between threads of the button, wherein a top edge of the threads of the threaded rod are in contacting with the base while the button is in threaded engagement with the threaded rod.

Claim 3

Dependent Claim 37 words

An apparatus, as set forth in claim 1 , wherein the mechanism further includes a first cleaning passageway defined by the cartridge delivery mechanism and extending from the exterior thereof to the threaded engagement of the rod.

Claim 4

Dependent Claim 38 words

An apparatus, as set forth in claim 1 , wherein at least a portion of the threads of the button are spaced from the threaded rod to define a second cleaning passageway for conveying a cleaning medium therethrough.

Claim 5

Dependent Claim 27 words

An apparatus, as set forth in claim 1 , wherein the axial bore of the button is adapted for moving the button between engaged and disengaged positions.

Claim 6

Dependent Claim 27 words

An apparatus, as set forth in claim 4 , wherein the axial bore of the button has a diameter greater than a diameter of the threaded rod.

Claim 7

Dependent Claim 32 words

An apparatus, as set forth in claim 1 , wherein the mechanism further includes a biasing device for biasing the threads of the button into the threaded engagement with the threaded rod.

Claim 8

Dependent Claim 18 words

An apparatus, as set forth in claim 1 , wherein the mechanism includes bushings slidably supporting the rod.

Claim 9

Dependent Claim 37 words

An apparatus, as set forth in claim 7 , wherein the button includes a flat surface for engaging one of the bushings to ensure proper alignment of the threads of the button when engaging the threaded rod.

Claim 10

Dependent Claim 45 words

An apparatus, as set forth in claim 1 , wherein the threaded rod includes a first end and a second end, wherein the apparatus includes a disc attached to the first end of the threaded rod for advancing the ejection of cement from the cartridge.

Claim 11

Dependent Claim 19 words

An apparatus, as set forth in claim 9 , wherein the mechanism includes a recess for receiving the disc.

Claim 12

Dependent Claim 47 words

An apparatus, as set forth in claim 9 , including a handle attached to the second end of the threaded rod for manually rotating the threaded rod while in threaded engagement with the threads on the button thereby advancing the disc and ejecting cement from the cartridge.

Claim 13

Dependent Claim 34 words

An apparatus, as set forth in claim 11 , wherein the handle includes markings for indicating degree of rotation thereof and for indicating the ejection of a predetermined amount of cement from the cartridge.

Claim 14

Dependent Claim 134 words

A delivery apparatus for injecting cement from a cartridge, comprising: a cradle with an axial cavity extending therethrough for supporting the cartridge; a cartridge dispensing mechanism coupled to the cradle; a threaded rod having threads and extending into the axial cavity of the cradle; a button defining an axial bore having threads, the button being moveable into and out of threaded engagement with the threaded rod; and, a limiting structure for limiting a travel of the button and minimizing friction and pinching between the button and the threaded rod, wherein the limiting structure includes at least one horizontal base formed between threads of the button, wherein a top edge of the threads of the threaded rod are in contact with the horizontal base while the button is in threaded engagement with the threaded rod.

Claim 15

Dependent Claim 134 words

A delivery apparatus for injecting cement from a cartridge, comprising: a cradle with an axial cavity extending therethrough for supporting the cartridge; a cartridge dispensing mechanism coupled to the cradle; a threaded rod having threads and extending into the axial cavity of the cradle; a button defining an axial bore having threads, the button being moveable into and out of threaded engagement with the threaded rod; and, a limiting structure for limiting a travel of the button and minimizing friction and pinching between the button and the threaded rod, wherein the limiting structure includes at least one horizontal base formed between threads of the button, wherein a top edge of the threads of the threaded rod are in contact with the horizontal base while the button is in threaded engagement with the threaded rod.

Claim 16

Dependent Claim 25 words

A delivery apparatus, as set forth in claim 13 , wherein the threads of the button are located on a bottom portion of the button.

Claim 17

Dependent Claim 28 words

A delivery apparatus, as set forth in claim 14 , wherein the horizontal base extends over a portion of a width of the bottom portion of the button.

Claim 18

Dependent Claim 17 words

A deliver apparatus, as set forth in claim 13 , wherein the limiting structure includes a stop.

Claim 19

Dependent Claim 32 words

An apparatus, as set forth in claim 13 , wherein the mechanism further includes a biasing device for biasing the threads of the button into the threaded engagement with the threaded rod.

Claim 20

Dependent Claim 18 words

An apparatus, as set forth in claim 13 , wherein the mechanism includes bushings slidable supporting the rod.

Claim 21

Dependent Claim 37 words

An apparatus, as set forth in claim 18 , wherein the button includes a flat surface for engaging one of the bushings to ensure proper alignment of the threads of the button when engaging the threaded rod.

Claim 22

Dependent Claim 45 words

An apparatus, as set forth in claim 13 , wherein the threaded rod includes a first end and a second end, wherein the apparatus includes a disc attached to the first end of the threaded rod for advancing the ejection of cement from the cartridge.

Claim 23

Dependent Claim 19 words

An apparatus, as set forth in claim 20 , wherein the mechanism includes a recess for receiving the disc.

Claim 24

Dependent Claim 47 words

An apparatus, as set forth in claim 20 , including a handle attached to the second end of the threaded rod for manually rotating the threaded rod while in threaded engagement with the threads on the button thereby advancing the disc and ejecting cement from the cartridge.

Claim 25

Dependent Claim 34 words

An apparatus, as set forth in claim 22 , wherein the handle includes markings for indicating degree of rotation thereof and for indicating the ejection of a predetermined amount of cement from the cartridge.

Claim 26

Dependent Claim 111 words

A delivery apparatus for injecting cement from a cartridge, comprising; a cradle with an axial cavity extending therethrough for supporting the cartridge; a cartridge dispensing mechanism coupled to the cradle; a threaded rod having threads and extending into the axial cavity of the cradle; a button defining an axial bore having threads, the button being moveable into and out of threaded engagement with the threaded rod; and, a limiting structure for limiting a travel of the button and minimizing friction and pinching between the button and the threaded rod, wherein the limiting structure includes at least one pin inserted through a bottom of the button between the threads of the button.

Claim 27

Dependent Claim 111 words

A delivery apparatus for injecting cement from a cartridge, comprising; a cradle with an axial cavity extending therethrough for supporting the cartridge; a cartridge dispensing mechanism coupled to the cradle; a threaded rod having threads and extending into the axial cavity of the cradle; a button defining an axial bore having threads, the button being moveable into and out of threaded engagement with the threaded rod; and, a limiting structure for limiting a travel of the button and minimizing friction and pinching between the button and the threaded rod, wherein the limiting structure includes at least one pin inserted through a bottom of the button between the threads of the button.

Claim 28

Dependent Claim 23 words

A delivery apparatus, as set forth in claim 24 , wherein the limiting structure includes a wide tooth which engages the threaded rod.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2006-07-28	2007-01-27	2007-07-29	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2010-07-28	2011-01-27	2011-07-29	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2014-07-28	2015-01-27	2015-07-29	$7700.00	Window Closed / Lapsed

Delivery device for bone cement

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