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Dispensing unit with elastically driven mixer

A technology of mixing device and mixing element, used in vacuum mixing system, closed vacuum mixing system, PMMA bone cement, mixed cement field, can solve the problems of cemented bone and prosthesis connection deterioration, obstacles, etc., to achieve trigger and application The effect of user-friendly, low energy loss, simple and inexpensive design

Inactive Publication Date: 2018-09-14
HERAEUS MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, mixing PMMA bone cement often requires some effort, which can be a hindrance during the often hectic routine during surgery
Insufficient cement mixing can lead to deterioration of the connection between the cemented bone and the prosthesis, which is definitely not advisable

Method used

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  • Dispensing unit with elastically driven mixer
  • Dispensing unit with elastically driven mixer
  • Dispensing unit with elastically driven mixer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0087] figure 1 with figure 2 A schematic cross-sectional view showing details of the vacuum mixing system according to the present invention, which has a mixing device according to the present invention to implement the method according to the present invention, and image 3 Shows its partial cross-sectional perspective view. figure 1 with image 3 Shows the locked state, and figure 2 The unlocked state is shown.

[0088] The vacuum mixing system has a cement cylinder 1 which is composed of plastic material and forms the boundary of a cylindrical mixing space 2 on its inner side. Distribution opening on the floor side (in figure 1 with figure 2 In, on the bottom) has a stirring shaft 3 guided through the opening, the stirring shaft 3 is rotatably supported and has four mixing blades 4 attached thereto as mixing elements. The mixing blade 4 is connected to the mixing shaft 3 by a joint and can thus be placed close to the mixing shaft 3 so that the mixing shaft 3 can be inser...

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PUM

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Abstract

The present invention relates to a dispensing device with an elastically driven mixer, more particularly to a mixing device for polymethyl methacrylate bone cement, comprising: a mixing space (2) for mixing the polymethyl methacrylate methyl acrylate bone cement; at least one mixing element (4) rotatably supported in said mixing space (2); gear wheel, by means of which said at least one mixing element (4) can be driven ) rotation; at least one elastically deformable energy storage element (16), which is connected to the gear, thereby enabling the gear to be driven by elastic energy from the energy storage element (16), and so that the The at least one mixing element (4) can rotate in the mixing space (2) by means of the gear when the energy storage element (16) releases elastic energy. The invention also relates to a vacuum mixing system comprising a mixing device of this type and a method for mixing cement.

Description

Technical field [0001] The invention relates to a mixing device for polymethyl methacrylate bone cement (PMMA bone cement). [0002] The invention also relates to a vacuum mixing system comprising this type of mixing device and a method for mixing cement, especially PMMA bone cement. [0003] Therefore, the subject of the present invention is a mixing device for homogenizing the cement component of powder-liquid polymethyl methacrylate bone cement. Another subject of the present invention is a closed vacuum mixing system for storing, mixing and distributing polymethyl methacrylate bone cement. Background technique [0004] Polymethyl methacrylate (PMMA) bone cement is based on Mr. Charnley's pioneering work. PMMA bone cement consists of a liquid monomer component and a powder component. The monomer component generally includes a monomer, methyl methacrylate, and an activator dissolved therein. The powder component is also called bone cement powder and includes one or more polymer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F7/18B01F13/06B01F3/12B01F23/57B01F29/63
CPCF03G1/02B01F27/073B01F31/40B01F33/5012B01F35/32005B01F35/718B01F35/754251B01F2101/20A61B17/8833A61B2017/8838
Inventor S.福格特T.克卢格
Owner HERAEUS MEDICAL