A multiposition brain holder: a versatile appliance for microneurosurgical laboratory.
MG Bhatjiwale, A Goel, DP Muzumdar
Department of Neurosurgery, Seth G. S. Medical College and King Edward Memorial Hospital, Parel, Mumbai, India., India
M G Bhatjiwale
Department of Neurosurgery, Seth G. S. Medical College and King Edward Memorial Hospital, Parel, Mumbai, India.
|How to cite this article:|
Bhatjiwale M G, Goel A, Muzumdar D P. A multiposition brain holder: a versatile appliance for microneurosurgical laboratory. J Postgrad Med 2001;47:82-3
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Bhatjiwale M G, Goel A, Muzumdar D P. A multiposition brain holder: a versatile appliance for microneurosurgical laboratory. J Postgrad Med [serial online] 2001 [cited 2022 Aug 18 ];47:82-3
Available from: https://www.jpgmonline.com/text.asp?2001/47/1/82/224
Cadaver dissection under microscope forms an essential part of training of residents and neurosurgeons. A practical and compact appliance for supporting and safe multi-directional manoeuvering of the fixed brain specimen suitable for microneurosurgical dissections is described. The apparatus and its advantages over the previous described head-holder are discussed.
The device consists of a heavy circular stainless-steel base plate weighing 1050 grams (Fig. 1 & 2). The main stem of the brain holder consists of two ball and socket joints in continuity. Each ball and socket joint transcribes a wide cone of circumferential movement. Two joints in continuity allow a wide range of movement of the base. A screw handle fixes the joint in any selected position. The distal ball and socket joint is connected to a metal block, which has a groove for the primary blade, and mechanisms to screw fix it. The primary blade has a metal slot, which serves to anchor three sets of secondary blades as shown in the [Figure:1]. A tertiary blade is applied to the free ends of the secondary blades to complete the supporting assembly. All blades are malleable and are made of SS316 stainless steel. The angulation achievable with the help of stabilization of brain with the malleable blades in addition to the inclination obtained by the ball and socket joints provides a wide and effective range of movements. The blades help to retain compactness and natural alignment of brainstem, cerebellum and the cerebral hemisphere.
A window drape as shown in the [Figure:2] can be used in conjunction with the brain holder to obtain the ‘craniotomy’ effect.
Head clamps and holders are used during an actual neurosurgical operation to stabilize the head in a particular desired position so that the surgery on the brain can be performed with minimum discomfort to the surgeon and in optimum brain position., The same principle is necessary when one is analyzing, learning or practicing a particular surgery or an anatomical territory on a fixed cadaveric brain specimen, particularly under microscope. Due to the fragility of the fixed brain it is difficult to stabilize it in a particular position for a period of time. Apart from a head-holder described by us previously, there is no other device described in the literature for use in the cadaveric microneurosurgical laboratory. The apparatus described by us earlier had two moulds of the skull made in the form of soup bowls for placement of the brain. One mould was made to accommodate the base of the brain including the cerebral hemispheres, brainstem and the cerebellum and the other was to hold the brain convexity. A base that held both bowls was similar to that in the present report. Due to the malleability of the blades and the possibility of firmly and circumferentially holding the specimen adds versatility in the present holder. There is a possibility of turning the specimen in a wide range of directions and even turning it upside down. The extensive angular mobility of the primary and secondary joints with the freedom lent by ‘moving blade system’ incorporated in this holder ensure that the brain can be placed and supported in any desired anatomical or operative position. The modular design and the ease of disassembly ensure easy cleaning of the apparatus. Due to the incorporation of commonly used and available stainless steel material, the apparatus is not expensive.
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