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Cement applicator with hollow barrel on delivery plunger

A technology of bone cement and plunger, which is applied in the equipment field of bone cement paste, can solve the problems of bone cement paste consistency change, mixing ratio change, etc., and achieve the effect of large uniformity and sufficient stability

Active Publication Date: 2020-04-03
HERAEUS MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, certain combinations may lead to an undesired change in the consistency of the cement paste mass at the end of the extrusion process, the mixing ratio between cement powder and monomer liquid has changed

Method used

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  • Cement applicator with hollow barrel on delivery plunger
  • Cement applicator with hollow barrel on delivery plunger
  • Cement applicator with hollow barrel on delivery plunger

Examples

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Embodiment Construction

[0149] Figures 1 to 9 A diagram of a device according to the invention is shown. Figure 1-3 And 5 and 6 show various schematic overviews of exemplary devices according to the invention. Figure 4 with 7 - 9 shows a schematic cross-sectional view as a detail in the form of an enlarged detail through different regions of the device according to the invention.

[0150] The device according to the invention essentially comprises a plastic tubular container formed as a front ( figure 1 with 2 centered at the top, image 3 , 4 , 7-9 are on the left, Figure 5 center in the upper right, Image 6 A cartridge 1 having a cylindrical inner space in the lower left) part, and forming a holder 2 as a rear part for a glass ampoule 3 as a single liquid container. Instead of the glass ampoule 3 , a breakable plastic ampoule or, in the case of smaller modifications, a tearable film bag of metal-coated plastic can also be used instead of the glass ampoule 3 .

[0151] The rear of the ...

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Abstract

The invention relates to a method for producing a bone cement paste (54) from a monomer liquid (4) and cement powder (5) as starting components of a bone cement paste (54) and delivering the mixed bone cement paste Device for the mass ( 54 ) with a cartridge ( 1 ) with a cylindrical interior, wherein the interior of the cartridge ( 1 ) is closed on the front side except for the delivery opening for the discharge of the bone cement mass ( 54 ), wherein A delivery plunger (7) is arranged in the inner space of the barrel (1), which is pushable in the direction of the delivery opening, and wherein the cement powder (5) is arranged in the barrel (1) between the delivery opening and the delivery plunger (7). ) in which a hollow cylinder (9) is arranged on the front side of the delivery plunger (7) facing the delivery opening, wherein the hollow cylinder (9) opens on its front surface facing the delivery opening and extends from the The front side of the delivery plunger (7) extends at least 3 mm into the interior space of the cartridge (1). The invention also relates to a method for producing a bone cement paste (54) using the device.

Description

technical field [0001] The invention relates to a method for producing bone cement paste from monomer liquid and cement powder as starting components (matrix components) of bone cement (bone cement) and for delivering the mixed bone cement Equipment for paste dough. [0002] The invention also relates to a method for producing a bone cement paste, in particular a pasty polymethylmethacrylate bone cement paste, using such a device. [0003] In particular, the present invention provides a method for separately (separately) storing cement powder and monomer liquid of polymethyl methacrylate bone cement for subsequent mixing of cement powder and monomer liquid to form bone cement paste and for delivery of the mixed Bone cement paste equipment. The device according to the invention is preferably a fully pre-assembled cementing system. Background technique [0004] Polymethylmethacrylate (PMMA) bone cement is attributed to the pioneering work carried out by Mr. John Charnley (C...

Claims

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Application Information

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IPC IPC(8): B65D81/32B65D83/76
CPCB65D81/3238B65D81/3244B65D81/3255B65D83/0033A61B17/8825A61B17/8827A61B17/8833A61B2017/8838B01F33/50112B01F35/7131B01F35/7174B01F35/754251B01F2101/20A61B17/8822A61B2017/00477A61B2017/00955
Inventor S·沃格特T·克鲁格R·斯特拉豪森
Owner HERAEUS MEDICAL
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