US 7,393,342 B2 · Bone cement mixing and delivery system including a delivery gun and a cartridge having a piston, the delivery gun configured to release the piston

Abstract

A bone cement mixing and delivery system is provided. The system includes a mixing cartridge for receiving liquid and powder components of bone cement, a mixing device for mixing the components, and a delivery gun for discharging the bone cement from the mixing cartridge. The mixing cartridge comprises a cylinder having proximal and distal ends with a cylinder wall extending between the ends. A piston is locked at the distal end by a locking member that includes a pair of locking tabs protruding into slots in the cylinder wall. With the piston in the locked position, the mixing device, e.g., a mixing shaft and blade, mixes the components. After mixing, the cartridge is placed in the delivery gun and release buttons on the locking member are engaged by a release mechanism on the delivery gun to release the piston from the locked position.

Claims12

Dependent claims

A bone cement mixing and delivery system for mixing components of bone cement to form a bone cement mixture and delivering the bone cement mixture to a target site, said system comprising:

a cartridge having proximal and distal ends, said cartridge comprising;
a wall extending between said ends,
a piston releasably secured to said wall in a locked position near said distal end, and
a locking member for releasably securing said piston in said locked position near said distal end,
a delivery device adapted to hold said cartridge, said delivery device comprising;
a casing, and
a drive mechanism supported by said casing and advanceable relative to said casing to discharge the bone cement mixture from said cartridge wherein said drive mechanism includes a release mechanism for engaging said locking member to unlock said piston.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

11/837,649Filed 13 Aug 2007 · division

Priority

12 May 2003

Published

US 2008/0025140 A131 Jan 2008

Granted

1 Jul 2008

Term ends

Not estimatedThe source records don’t support an estimate.

Classification21 codes

A61B 17/8822
For introducing fluid filler into bone or extracting it: characterised by means facilitating expulsion of fluid from the introducer, e.g. a screw…
A61B 17/8827
For introducing fluid filler into bone or extracting it: with filtering, degassing, venting or pressure relief means
B01F 31/40
Mixers with shaking, oscillating, or vibrating mechanisms: with an axially oscillating rotary stirrer
B01F 33/5011
Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use: portable during use, e.g. hand-held

Family

Application60/469,651Us provisional application · filed 12 May 2003

Application60/520,877Us provisional application · filed 18 Nov 2003

Application10/843,813Parent of this division · filed 12 May 2004

US 2008/0025140 A1Pre-grant publication · published 31 Jan 2008

US 2004/0267272 A1Published application

US 7,393,342 B2This patent

From the US filing history. Foreign family members aren’t listed.

Bone cement mixing and delivery system including a delivery gun and a cartridge having a piston, the delivery gun configured to release the piston

Life of this patent

Bone cement mixing and delivery system including a delivery gun and a cartridge having a piston, the delivery gun configured to release the piston

Life of this patent

Abstract

Claims12