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AN INTEGRATED ALL-HYDRAULIC CANTILEVER PATIENT TABLE IN MAGNETIC RESONANCE IMAGING (MRI)

IP.com Disclosure Number: IPCOM000247331D
Publication Date: 2016-Aug-25
Document File: 6 page(s) / 215K

Publishing Venue

The IP.com Prior Art Database

Abstract

A technique that enables hydraulic mechanism for both up and down movement, and in and out movement of patient table in a magnetic resonance imaging (MRI) system is disclosed. The technique includes an integrated cantilever structure that provides up and down movement and uses all hydraulic technology to simplify the in and out movement. The all hydraulic technology includes one hydraulic system design for a power drive that enables both up and down movement, and in and out movement of the patient table. An embodiment of the technique includes an oil way design that includes up and down hydraulic cylinder, in and out hydraulic motor, interlocking valve, pump, motor, and some key connectors

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AN INTEGRATED ALL-HYDRAULIC CANTILEVER PATIENT TABLE IN MAGNETIC RESONANCE IMAGING (MRI)

BACKGROUND

The present invention relates generally to a magnetic resonance imaging (MRI) system and more particularly to a technique that enables hydraulic mechanism for both up and down movement, and in and out movement of a patient table in the MRI system.

Generally, patient table used in magnetic resonance imaging (MRI) includes an assembly of large number of parts. The patient table includes structures that enables up and down movement, and in and out movement of the table. The assembly of such large number of parts makes such structures fragile and prone to easy damage. Further, the patient table includes a drive system control, which includes many components and actuators. The components and the actuators enable a step speed change in the movement of the patient table. Figure 1 depicts an outline of a patient table used in MRI with structures enabling in and out movement, and up and down movement.

Figure 1

A conventional technique includes two motors for driving up and down function, and in and out function in the patient table. The up and down function is enabled using a scissor structure and hydraulic power, whereas, the in and out function is enabled using a main base on a gear and rack structure and a gear motor. Figure 2 depicts an overview of the complete structure of the patient table.

Figure 2

Another conventional technique including a patient table and an MRI apparatus allows simultaneous movement of a cradle and scanning performance in the patient table. The technique includes a table body, a cradle provided on the table body and driving means for driving the cradle. The driving means has a hydraulic motor as a driving source that utilizes fluid pressure. The cradle has a horizontal extended top surface that moves horizontally, driving means for driving pulley to rotate belt, thereby, moving connecting means and the cradle. Figure 3 depicts the MRI apparatus and the patient table with horizontal motion enabled by hydraulic drive.

Figure 3

However, the above mentioned conventional techniques require large number of components for providing up and down movement and in and out movement of the patient table, which makes the assembly expensive and also less reliable.

Therefore, it would be desirable to have a technique that provides a concise and cost effective structure for providing both vertical and horizontal movement in the patient table.  

BRIEF DESCRIPTION OF DRAWINGS

Figure 1 depicts an outline of a patient table used in magnetic resonance imaging (MRI) with structures enabling in and out movement, and up and down movement.

Figure 2 depicts an overview of the complete structure of the patient table.

Figure 3 depicts the MRI apparatus and the patient table with horizontal motion enabled by hydraulic drive.

Figure 4 depicts a patient table design including a hydraulic system.

Figure 5 depicts an integrated cantilever structure with a sin...