Feeding device for a monomer

• US 20050228396A1
• Filed: 03/31/2003
• Published: 10/13/2005
• Est. Priority Date: 06/03/2002
• Status: Active Grant

• Current Assignee: Cemvac System AB
• Original Assignee: Cemvac System AB
• Inventors: Jonsson, Soren
• Granted Patent: US 8,246,629 B2
• Time in Patent Office: Days
• US Class Current: 606/92
• CPC Class Codes: A61B 17/8827 with filtering, degassing, venting or pressure relief means
• CPC Class Codes: A61B 2050/0083 Snap connection
• CPC Class Codes: A61F 2002/30561 breakable or frangible
• CPC Class Codes: A61F 2002/4685 by means of vacuum
• CPC Class Codes: A61F 2250/0071 breakable or frangible
• CPC Class Codes: B01F 33/5011 portable during use, e.g. hand-held
• CPC Class Codes: B01F 35/713 comprising breaking packages or parts thereof, e.g. piercing or opening sealing elements between compartments or cartridges containers or packages per se B65D
• CPC Class Codes: B01F 35/7131 Breaking or perforating packages, containers or vials

Abstract

The invention relates to a delivery device for a monomer and comprises an elongate container (2). This is designed to enclose at least one ampoule containing the monomer. At one end the container (2) has a connection (2a) for delivering the monomer to a mixing device, pre-filled with a polymer, for the preparation of bone cement under vacuum. At its other end the container (2) has a cap (2b). In the container wall there is an air inlet aperture (2c). There are also manually actuatable elements for opening at least one ampoule (3a, 3b). The cap (2b) is removable from the container (2) and has holding elements (3) designed by means of a positively interlocking engagement to hold fast an ampoule neck (3a1, 3b1) inserted into the said holding elements 3. The said opening elements comprise a knob (4), which is in threaded engagement (4a) with a draw rod. The remote end (1) of the draw rod (5) extends past the base (3a2, 3b2) of the said ampoule(s) (3a, 3b) and has a spike (6) pointing towards the base (3a2, 3b2) of each ampoule, it being possible to make the spike penetrate the base (3a2, 3b2) by turning the knob (4).

Claims

1. Delivery device fir a monomers comprising:

an elongate container designed to enclose at least one ampoule containing the monomer, the container at one end being provided with a connection for delivering the monomer to a mixing device, pre-filled with a polymer, for the preparation of bone cement under vacuum, and at its other end having a cap and in the container wall, at least one air inlet aperture and manually actuatable elements for opening at least one ampoule wherein the cap is removable from the container and has holding elements designed by means of a positively interlocking engagement to hold fast an ampoule neck inserted into the holding elements, and wherein the said opening element includes a knob, in threaded engagement with a draw rod, the remote end of which extends past the base of the said at least one ampoule and has a spike pointing towards the base of each at least one ampoule, it being possible to make the spike penetrate the base by turning the knob.

2. Device according to claim 1, wherein the container has the capacity to enclose a maximum of three ampoules and wherein there is a number of spikes corresponding to the number of ampoules and connected to the draw rod, the distance of which spikes from the base of each ampoule is adjustable.

3. Device according to claim 1, wherein there are interacting snap elements between the container and the cap thereof.

4. Device according to claim 2, wherein there are interacting snap elements between the container and the cap thereof.