Headrest for computer tomograph

FIELD: medicine; X-ray computer tomography.

SUBSTANCE: headrest can be used for imparting necessary position to head of patient laid onto horizontal surface. Headrest has head support provided with rotary-fixing unit which provides lifting and lowering, and lean plate attached to table. Rotary sector provided with radius groove is mounted between head support and lean plate. Rotary-fixing unit of head support is mounted onto turning sector by means of arms. Sector is mounted for movement for angle of 0-45 ° to the left or to the right relatively horizontal axis within radius groove. Scale for measuring angle of turn is drawn onto external side of rotary sector. Lean plate is provided with rod having thread which rod enters radius groove of rotary sector. Nut is put onto rod with thread which nut fixes rotary sector to lean plate.

EFFECT: widened diagnostic abilities of computer tomography tests.

2 dwg

 

The invention relates to medicine, namely to x-ray computed tomography, and can be used to give the patient's head placed on a horizontal table position.

Move and rotate the head of the patient in x-ray computed tomography is necessary in the study of the middle ear, the skull base, etc. the Introduction into clinical practice of new operational technologies necessitates improving the quality and diagnostic capabilities of x-ray computed tomography.

Known table for tomographic examination of the cervical spine (German Patent DE 10027335 C1, MCL 7 And 61 In 6/04, bull. Inventions of the world, VIP, No. 17, 2002), which has movable plates, one of which lifts the chest of the patient by filling the fluid-elastic bag beneath it, and the other attached to it by a hinge plate straightens up, its opposite end can be moved in the other direction. While playing the amount of movement of the cervical spine.

The drawbacks are that positioned the cervical spine of the patient, but the device is not able to precisely position the patient's head.

The closest is the headrest for imaging (Technical Publications P916 AB. CT Max 640 Operator Manual. Copyright 1992, by General Electric Company), which includes the horses head with swivel locking hub fixed to the attachment plate. The attachment plate is fixed to the table. Rotary-fixing unit is designed in the form of a screw mechanism providing movement of the headrest in the same plane, providing a raising and lowering of the headrest relative to the table.

The device has the following disadvantages

You cannot move the headrest in other planes.

You cannot play the full scope of physiologically reproducible range of motion of the cervical spine and to position the patient's head in the desired examination position.

The objective of the invention - creation devices to ensure that the movement of the patient's head in two planes, so that you can adjust, to accurately locate and fix the patient's head when doing research that requires special styling of the patient's head.

This object is achieved in that the headrest for a computer tomograph includes a horses head with swivel-locking hub ensuring its raising and lowering. Rotary-fixing unit is designed in the form of a screw mechanism. The attachment plate is fixed to the table of the CT scanner. Between the cradle and the attachment sq is the set of rotary sector with radius groove. Rotary-fixing site of lodgement with the help of brackets mounted on the rotary sector, which has the ability to move at an angle of 0-45 degrees to the left or right on the horizontal axis within the radial groove. On the outer side of the rotary sector marked scale for measuring the angle of rotation. The attachment plate is provided with a threaded rod, which is included in the radial groove of the rotary sector. On the threaded rod worn nut, locking swivel sector on the attachment plate.

The novelty of the device:

between the cradle and the attachment plate has a rotary sector with radius groove;

- rotary-fixing site of lodgement with the help of brackets mounted on the rotary sector, which has the ability to move at an angle of 0-45 degrees to the left or right on the horizontal axis within the radial groove;

on the outer side of the rotary sector marked scale for measuring the angle of rotation;

- the attachment plate is provided with a threaded rod, which is included in the radial groove of the rotary sector;

- on the threaded rod worn nut, locking swivel sector on the attachment plate.

The device illustrated by the drawings presented on figure 1 and figure 2.

Figure 1 shows the headrest at the top.

Figure 2 shows a side view.

Podgolovnika computed tomography consists of the attachment plate 1, which is provided with a threaded rod 2. The rod comes in a radial groove of the rotary sector 3. The headrest has a lodgement for head 4, which is equipped with a swivel-locking hub 5. Rotary-fixing node 5 is fixed on the rotary sector 3 by means of brackets. Rotary sector 3 moves with the cradle 3 and the rotary retainer node 5 to the left and to the right relative to the horizontal axis at an angle of 0-45 degrees in both directions within the radial groove. To determine the exact angle on the outer side of the rotary sector marked scale programmirovaniya in degrees. After you install 4 lodgement of the headrest in the desired position it is secured by a nut 6 is mounted on the threaded rod 2, the attachment plate 1.

The device operates as follows.

When obtaining CT images of the skull base or middle ear for better visualization requires special stacking of the patient.

The study of the middle ear is carried out in the patient lying on his back. The patient's head is placed in the cradle 4 headrest. The attachment plate 1 with its grooves is articulated with projections on the table of the MRI scanner and is firmly fixed. The position of the cradle 4 is adjustable in two planes. Rotary-fixing node 5 to the cradle 4 is raised or lowered to the desired height the. Rotary sector 3 is shifted to the desired angle within 0-45 degrees left or right within the radial groove. The offset angle is measured using the scale marked on the outer side of the sector. The control parameters are determined by the diagnostic task.

Is the scanning of the patient's head, located at a right angle to build the optimal plane of the slice.

The proposed device allows you to change the position of lodgement in two planes, which expands the diagnostic capabilities of CT screening. The conditions for increasing the volume of received and diagnostically relevant information, obtain the most differentiated display of small anatomical objects, such as tympanic cavity and its auditory ossicles, which allows to achieve better results of the study of the middle ear.

The device can be used on all x-ray CT scanner of the third generation in research requiring special stowage of the patient's head, for example in studies of the middle ear and skull base.

Headrest for a computer tomograph, comprising a cradle for the head with swivel-locking hub ensuring its raising and lowering, privlacno the plate, attached to the table, characterized in that between the cradle and the attachment plate has a rotary sector with a radial groove, the rotary fixing the site of lodgement with the help of brackets mounted on the rotary sector, which has the ability to move at an angle of 0-45 degrees to the left or right on the horizontal axis within the radial groove on the outer side of the rotary sector marked scale for measuring the angle of rotation, the attachment plate is provided with a threaded rod, which is included in the radial groove of the rotary sector, on the threaded rod worn nut, locking swivel sector on the attachment plate.



 

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