Patient support table provided with a wiring guiding means
The apparatus (10) arranged for enabling a patient handling according to the invention is provided with an electronic unit (2) arranged to enable a suitable patient examination. The patient to be examined is positioned on a patient support table. The patient support table comprises a table top (4a) which can be translated with respect to a table base (4b). In order to operate the apparatus a control means (12) is provided. The control means (12) is electrically connected to a table base connection box (6) by means of a suitable wiring. The apparatus according to the invention is provided with a table top connection box (4c), which is attachable to the table top (4a), preferably at the foot portion of the table top. The wiring to the control means is directed from the table base connection box (6) via the table pedestal (4b) under the table top (4a) to the table top connection box (4c), which is provided with second connection means (4d) providing suitable connectors. The wiring running from an exit point in the table pedestal to the table top connection box is housed in the guiding means, which can be a suitable hollow container which is arranged to keep the individual cables in place during the translation of the table top (4a) and is selected with a suitable length to match the translation of the table top. Preferably, the guiding means are fixated to a two static fixation points, for example a table pedestal (2b) and a table top connection box (4c). In order to accommodate the wiring running from the table top connection box (4c) to the control means (12) a set of hooks (5) can be arranged on the rails (not shown) of the table top (4a).
The invention relates to an apparatus arranged to enable a patient handling, said apparatus comprising an electronic unit arranged to carry-out said handling, a translatable patient support table and control means arranged to control said apparatus, said apparatus further comprising a wiring to the control means.
The invention still further relates to a patient support table.
The apparatus as is set forth in the opening paragraph is known in the art of medical diagnostic equipment. An example of an embodiment of the known apparatus is an X-ray diagnostic unit arranged to enable an X-ray examination of a patient. For this purpose the patient is put on a patient support table, which is translatable in a plurality of directions, most commonly in three orthogonal x-, y-, z-directions and is rotateable about an axis. In conventional apparatus the patient support table is rotateable about a vertical axis, however in more sophisticated apparatus also a rotation about a horizontal axis is foreseen. The X-ray examination unit further comprises a gantry on which an X-ray source and an X-ray detector are mounted. Conventionally, the X-ray source and the X-ray detector are mounted on a C-shaped gantry which can be rotated about a horizontal axis. In order to examine the patient, the patient support table is positioned in an x-y-z-space so that the X-rays emanating from the X-ray source intercept a target area of the patient. The known X-ray apparatus further comprises a control means arranged to control the X-ray source, the X-ray detector and the translation of the patient support table. The control means is replaceably arranged, so that its position on the patient support table can be changed for an operator's convenience as the operator frequently changes his place with respect to the patient support table for a procedure of the patient handling. It is a common general practice to provide a wiring to the X-ray examination apparatus, which runs to a remote location, where a remote computer is located. Most commonly, a path of the wiring is divided into two sub-paths. A first sub-path covers for a distance between the remote location and the patient support table. The first sub-path is terminated at a first connection means, commonly called a table-base connection box. The second sub-path covers for a distance between the table-base connection box and the control means of the apparatus. The wiring of the second sub-path is of such a length that it does not obstruct a translation and rotation of the patient support table to its maximum range. The wiring of the second sub-path is most frequently arranged so that it partially lies on the floor or hangs nearby the table due to it having a superfluous length.
It is a disadvantage of the known apparatus that the wiring, comprising a plurality of individual cables, is running free in the area of the patient handling, which causes tangling of the wiring and it's hooking about the patient support table. In addition, when the cables are substantially bended, they get easily damaged limiting the durability of the apparatus as a whole.
It is an object of the invention to provide the apparatus for a patient handling with an improved cabling durability.
For this purpose in the apparatus according to the invention a wiring is at least partially housed in a substantially flexible guiding means arranged to substantially match a displacement of the patient support table. It has been long sought in the field of patient handling apparatus for a solution to arrange the wiring so that several criteria are met: i) the wiring allowing an unobstructed translation of the patient support table to its maximum range; ii) minimum superfluous cable length in the area of patient handling; ii) limited bending and torsion of the wiring during a translation of the table top.
Different approaches aiming to meet at least some of these criteria are known in the art. Firstly, the individual cables are arranged as individual spirals, which are stretched during the translation of the table top. This approach causes even bigger problems when individual spirals are tangled and twisted around each other. When the loops of the individual spirals are twisted around each other in a vicinity of the table top a longitudinal translation of the patient support table may be obstructed. Bending and torsion of the individual cables is still possible. Also, the elasticity of the twisted cables reduces with time, when they are often pulled on. Secondly, it is tried to select a unique position of the control means with respect to the table top. This approach is not welcome in the field of medical profession as it implies that all operators of an apparatus must select a unique position to operate the apparatus. For cardiac intervention procedures, for example, this solution is objected as the operator is constantly changing his position with respect to the patient Finally, it has been proposed to put all cables into a single tube which is running from a foot-end of the patient support table to the table base. This solution is disadvantageous as still the tube is in the way hindering the accessibility of the patient support table. Also the body of the tube can still be bend over a considerable angle causing a damage of the housed cables. In addition, it is known in the art of medical profession, that a plurality of additional meters is applied to the patient during a procedure of the patient handling. The tube can be an obstacle to the wiring of the additional meters.
The technical measure of the invention is based on the insight that it is advantageous to further sub-divide the second sub-path of the wiring. By providing a substantially flexible guiding means for housing the cables, said guiding means matching the displacement of the patient support table, the cables do not change their position with respect to each other and do not experience torsion during a translation and rotation of the table top. The material and construction of the guiding means can be suitably selected so that sharp bending of the resulting assembly is avoided. Due to this technical measure the wiring is protected from damage thus increasing its durability. It is further advantageous to arrange the first connection means and the second connection means at the respective ends of the guiding means, in order to ease a reconnection of the wiring. As the control means can be arranged to be mountable on the side rails of the patient support table, it is found to be further advantageous to provide cable accommodation means on a side surface of the patient support table to accommodate a path of the cable between the control means and the second connection means. An example of a suitable cable accommodation means is a hook In an embodiment of the apparatus according to the invention the patient support table comprises a table-top with a front surface for supporting the patient and a rear surface, the guiding means being positioned in a direct vicinity of the rear surface of the table-top substantially parallel to a plane of the table-top.
This technical measure has the advantage that due to the spatial arrangement of the guiding means according to the invention, the plate of the table-top serves as a protective member to the guiding means. Therefore, no obstruction for the wiring of supplementary equipment is caused. When the table-top is translated in a vertical direction, the guiding means move as a whole together with it, and is not exposed to the environment In the field of interventional application this leads to a surprising advantageous effect that the cables stay free from contamination, for instance blood, during the patient handling.
In a further embodiment of the apparatus according to the invention the guiding means comprises an assembly of interconnected segments, said assembly being movably arranged substantially directly beneath a table top of the patient support table. Those skilled in the art will understand that by selecting the guiding means of a suitable length and by movably attaching the guiding means beneath the table top the longitudinal translation of the table top to its maximum range is enabled. Suitable flexible hollow chains built up of a plurality of segments are known per se. An e-chain carrier system, available on the market under a trade name Igus® is a suitable example of an embodiment of the hollow chain. An application of this assembly for housing cables for apparatus for patient handling results in an surprisingly elegant solution meeting the criteria, as are set forth above. When the assembly is attached to two non-movable fixation points, for example a foot of the table top and a table pedestal, the assembly demonstrates a sliding movement between a slide-in position and a slide-out position of the table top, while being substantially horizontally oriented in space. The assembly can be arranged to have a sole degree of freedom in a horizontal direction. In this case it does not sag under the action of the gravity force, which is advantageous as no extra fixating means to hold the assembly in a position is required.
In a still further embodiment of the apparatus according to the invention, the patient support table is arranged with a border portion for steering a movement of the guiding means. It is found to be advantageous to arrange the patient support table with a border portion which limits space taken by the guiding means. This technical measure is particularly advantageous for guiding means allowing a curving in a horizontal plane beyond the width of the table top. It is found to be particularly advantageous to limit the bending radius to about 15 centimeters to reduce cabling damage due to sharp bending radii.
These and other aspects of the invention will be discussed in more detail with reference to figures.
Claims
1. An apparatus arranged to enable a patient handling, said apparatus comprising an electronic unit arranged to carry-out said handling, a translatable patient support table and control means arranged to control said apparatus, said apparatus further comprising a wiring to the control means, said wiring being at least partially housed in a substantially flexible guiding means arranged to substantially match a displacement of the patient support table.
2. The apparatus according to claim 1, wherein the patient support table comprises a table-top with a front surface for supporting the patient and a rear surface, the guiding means being positioned in a direct vicinity of the rear surface of the table-top substantially parallel to a plane of the table-top.
3. The apparatus according to claims 1, wherein the guiding means comprises an assembly of interconnected segments, said assembly being movably arranged substantially directly beneath a table top of the patient support table.
4. The apparatus according to claim 3, wherein the patient support table is arranged with a border portion for steering a movement of the guiding means.
5. The apparatus according to claim 3, wherein the assembly is bendable with a minimum radius of 15 cm.
6. The apparatus according to claim 1, wherein said apparatus is arranged to enable an X-ray examination of the patient.
7. A patient support table for use in the apparatus according to claim 1.
8. A patient table for a medical imaging system comprising:
- a table-top for supporting a patient;
- one or more control means for adjusting the position of the table-top;
- a table base connection box which connects to one or more remote locations;
- a table top connection box which is connected to said table base connection box via a plurality of cables under the table-top, wherein said table top connection box also connected to said one or more control means.
9. The patient table of claim 8 further comprising a flexible guiding means for housing connection wires between said table top connection box and said control means.
10. The patient table of claim 9, wherein said flexible guiding means is arranged to substantially match a displacement of the table-top.
11. The patient table of claim 10 further comprising one or more border portions for steering the movement of the guiding means.
12. A patient table for a medical imaging system comprising:
- a table-top for supporting a patient;
- one or more control means for controlling the position of the table-top;
- a wiring to the control means, said wiring being at least partially housed in a substantially flexible guiding means arranged to substantially match a displacement of the table-top.
13. The patient table of claim 12, wherein said guiding means is substantially housed by the table-top.
14. The patient table of claim 12 further comprising one or more border portions for steering the movement of the guiding means.
Type: Application
Filed: May 6, 2004
Publication Date: Oct 12, 2006
Inventor: Marjolein Verhoeven (Eindhoven)
Application Number: 10/555,938
International Classification: A47B 13/00 (20060101);