Patient support device

Abstract

[Problem] To provide a patient support device capable of obtaining an excellent X-ray image of an affected part of a patient during or immediately after an operation for the patient especially when the operation is conducted on the shoulder part. [Solution] A body-upper-half support table 10 of a patient support device 1 is configured to be freely movable in the width direction of a table 6 of an operation table 2 and to be fixable at any position in the width direction. This configuration makes it possible to obtain an excellent X-ray image of the affected part during or immediately after an operation, particularly in cases when the affected part being imaged is held from the upper and lower sides by a C-arm because no metallic parts or other such components are placed between both ends of the C-arm, i.e. in the imaging range of the C-arm.

Description

Patient support device

[0001] The present invention relates to a patient support device used for surgeries on a patient's shoulder, etc.

[0002] Generally, for surgeries on the shoulder including the surrounding area, such as arthroscopic surgery of the shoulder joint in general, proximal humerus fracture, shoulder arthroplasty, etc., the beach chair position is becoming the mainstream. Therefore, the table on which the patient is placed on the operating table (see Patent Document 1) is divided into a head support table, a back support table, a waist (near the buttocks) support table, and a leg support table along its longitudinal direction. These head support table, back support table, waist support table, and leg support table are pin-connected so as to be bendable with respect to each other, and each is configured to be rotatable in the vertical direction. When performing surgery in the beach chair position, when taking the beach chair position, the head support table and the back support table are removed from the table of the operating table, a dedicated upper body support table is attached, and the upper body support table is raised to a state close to 90° with respect to the horizontal direction.

[0003] Japanese Unexamined Patent Application Publication No. 2017 - 86603

[0004] And when the patient undergoes surgery in the beach chair position and takes an X-ray image of the affected part (shoulder) during the operation, it is taken by sandwiching the desired imaging range between both ends of a so-called C-arm (surgical X-ray imaging device). However, when taking an image of the affected part with the C-arm, especially when sandwiching the affected part from above and below, a good X-ray image of the affected part cannot be obtained due to metal parts, etc. located between the operating table and the upper body support table. As a result, the affected part cannot be confirmed in detail during the operation, and there is a risk that the operation cannot proceed smoothly.

[0005] And the present invention has been made in view of such a point, and particularly aims to provide a patient support device capable of obtaining a good X-ray image of the affected part during or immediately after the operation when performing surgery on the patient's shoulder.

[0006] As a means to solve the above problems, the invention relating to the patient support device of claim 1 is a patient support device having an upper body support table that is detachably attached as a component of the operating table and supports the upper body of the patient, wherein the upper body support table is rotatably supported around an axis extending in the width direction of the table, is movable along the width direction of the table, and is configured to be fixable at any position along that width direction. In the invention of claim 1, when performing surgery on the patient's shoulder in a beach chair position, the surgery is performed with the upper body support table moved along the width direction of the operating table. When taking X-ray images of the affected area, particularly by sandwiching it from above and below, with the C-arm, since the upper body support table is moved along the width direction of the operating table, no metal parts or the like are placed between both ends of the C-arm, i.e., within the imaging range of the C-arm, so a good X-ray image of the affected area can be obtained.

[0007] The invention relating to the patient support device of claim 2 is characterized in that, in the invention described in claim 1, the upper body support table is configured to be movable at a predetermined pitch in the width direction relative to the table by an offset mechanism. In the invention of claim 2, by providing an offset mechanism, the upper body support table can be moved at a predetermined pitch in the width direction relative to the operating table with a simple structure.

[0008] The invention relating to the patient support device of claim 3 is characterized in that, in the invention described in claim 2, the offset mechanism comprises a plurality of pin members provided on either the operating table body supporting the table or the upper body support table, and pin receiving holes provided on the other of either the operating table body or the upper body support table for receiving each of the pin members. In the invention of claim 3, since the offset mechanism is configured to include each pin member and pin receiving holes, its structure can be simplified, leading to a further reduction in manufacturing costs.

[0009] The invention relating to the patient support device of claim 4 is characterized in that, in the invention described in claim 1, the upper body support table comprises a main support plate which is substantially T-shaped in plan view and has a width-direction plate portion and a longitudinal plate portion, and a pair of sub-support plates which are substantially rectangular in plan view and are arranged on both sides in the width direction of the longitudinal plate portion of the main support plate, respectively, and these are detachably attached to each other. In the invention of claim 4, since it is possible to remove one of the pair of sub-support plates from the main support plate, the upper body support table is particularly effective for shoulder surgery.

[0010] The invention relating to the patient support device of claim 5 is characterized in that, in the invention described in claim 1, a head support device for supporting the patient's head is integrally provided on the upper body support table. In the invention of claim 5, the head support device can be moved together with the upper body support table along the width direction of the operating table, and X-ray imaging with a C-arm can be performed without problems during or immediately after surgery.

[0011] In particular, the patient support device according to the present invention makes it possible to obtain good X-ray images of the affected area during or immediately after surgery on the patient's shoulder.

[0012] Figure 1 is a perspective view of an operating table equipped with the patient support device according to this embodiment. Figure 2 is a perspective view of the operating table equipped with the patient support device according to this embodiment, in which the upper body support table of the patient support device is rotated approximately 90° upward in the vertical direction relative to the horizontal direction. Figure 3 is a perspective view showing the structure in which the upper body support table of the patient support device according to this embodiment rotates around an axis extending in the width direction of the table. Figure 4 is a perspective view showing the rear of the upper body support table of the patient support device according to this embodiment. Figure 5 is a perspective view showing the front of the upper body support table of the patient support device according to this embodiment. Figure 6 is a perspective view of the upper body support table of the patient support device according to this embodiment with one of the sub-support plates removed and the upper body support table offset along the width direction from the lumbar support table. Figure 7 is a rear view of the upper body support table of the patient support device according to this embodiment with one of the sub-support plates removed and the upper body support table offset along the width direction from the lumbar support table. Figure 8 is a perspective view showing a patient placed on a table of an operating table equipped with the patient support device according to this embodiment, and the shoulder (affected area) being X-rayed using a C-arm.

[0013] Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to Figures 1 to 8. The patient support device 1 according to this embodiment is used particularly when performing surgery on the patient's shoulder. Referring to Figure 1, the patient support device 1 according to this embodiment has an upper body support table 10 that is detachably attached to the operating table 2 as a component of the table 6 on which the patient is placed. The operating table 2 comprises an operating table body 3 and a table 6. The operating table body 3 supports the table 6 and has a leg base 4 having a plurality of casters 4A that can move in any direction and can be locked in any position, and a support column 5 extending upward from the leg base 4. The table 6 is placed on the operating table body 3 (support column 5) and on which the patient is placed.

[0014] Referring to Figures 1 and 2, the upper body support table 10 of the patient support device 1 according to this embodiment is detachably attached to the operating table body 3 by a bracket 30 (see Figure 4), described later, so as to be continuous with the longitudinal end of the lumbar support table 11, after removing the head support table (not shown) and back support table (not shown), which are pre-attached as components of the table 6 of the operating table 2. In short, when the patient support device 1 according to this embodiment is used, especially when performing surgery on the patient's shoulder, referring to Figures 1 and 2, the table 6 of the operating table 2 is composed of an upper body support table 10, a lumbar support table 11, and a leg support table 12. The upper body support table 10 is supported on the operating table body 3 so as to be rotatable around the width axis of the table 6. Referring to Figure 3, a pair of hydraulic cylinders 15, 15 are arranged on the inside of both widthwise ends of the lumbar support table 11 on the operating table body 3 (only one hydraulic cylinder 15 is shown in Figure 3).

[0015] Referring to Figure 3, a pair of gear bodies 17, 17 are arranged corresponding to each of the pair of hydraulic cylinders 15, 15. A rack 19 extends from the hydraulic cylinder 15 in a retractable manner. The rack 19 is made of a flat plate with teeth cut into its upper surface. The gear portion 21A of the spur gear 21 of the gear body 17 meshes with the rack 19. The gear body 17 is rotatably supported on the operating table body 3 by a pin member 26. The gear body 17 comprises a spur gear 21, a rotating member 22, and a support pin 23.

[0016] The spur gear 21 has a gear portion 21A within a central angle range of approximately 180°. A pin member 26 extending horizontally, more specifically in the width direction of the table 6, is integrally connected to the radial center of the spur gear 21. The pin member 26 is rotatably supported by the operating table body 3. A rotating member 22 is integrally connected to the pin member 26. A support pin 23 extends radially outward from the end of the rotating member 22. By driving the hydraulic cylinder 15 and moving the rack 19 forward and backward, the gear body 17 rotates vertically around the pin member 26. As a result, the support pin 23 rotates vertically around the pin member 26 together with the rotating member 22. When using the upper body support table 10, the rotation range of the support pin 23 is approximately 90° from the horizontal to the upper vertical direction.

[0017] Referring to Figures 3 and 4, a bracket 30 engages with the support pins 23, 23 of a pair of gear bodies 17, 17. The bracket 30 is an elongated member with a rectangular cross-section and extends along the width direction of the table 6 of the operating table 2. The length of the bracket 30 is slightly shorter than the width direction of the upper body support table 10. At both longitudinal ends of the bracket 30, a pair of pin fixing holes 32, 32 are formed, into which the support pins 23, 23 of the pair of gear bodies 17, 17 are inserted. Inside the pair of pin fixing holes 32, 32 of the bracket 30, a pair of positioning pins 34, 34 are provided, respectively, protruding in the same direction as the pin fixing holes 32, 32 (support pins 23 of the gear bodies 17).

[0018] The pair of positioning pins 34, 34 are positioned approximately in the longitudinal center of the bracket 30, spaced apart from each other along the longitudinal direction. The support pins 23, 23 of the pair of gear bodies 17, 17 are then inserted into the respective pin fixing holes 32, 32 of the bracket 30, and the bracket 30 is attached to the pair of gear bodies 17, 17 (on the operating table body 3 side). When the support pins 23, 23 of the pair of gear bodies 17, 17 are inserted into the respective pin fixing holes 32, 32 of the bracket 30, the tips of the support pins 23, 23 protrude significantly from the bracket 30.

[0019] At this time, the pair of support pins 23, 23 and the pair of positioning pins 34, 34 extend in the same direction. The tips of the pair of support pins 23, 23 and the tips of the pair of positioning pins 34, 34 are located on the same plane. Also, the distance L between the support pin 23 of one gear body 17 and one positioning pin 34 (see Figure 7), the distance L between the pair of positioning pins 34, 34 (see Figure 7), and the distance L between the support pin 23 of the other gear body 17 and the other positioning pin 34 (see Figure 7) are the same. The upper body support table 10 is integrally connected to the bracket 30 via an offset mechanism 38.

[0020] Referring to Figures 1, 4, and 5, the upper body support table 10 is equipped with a main support plate 41 and a pair of sub-support plates 42, 42 that are detachably attached to each other. The thickness of the main support plate 41 and the thickness of the pair of sub-support plates 42, 42 are approximately the same. The main support plate 41 has a widthwise plate portion 44 that is rectangular in plan view and extends in the width direction of the table 6 of the operating table 2, and a longitudinal plate portion 45 that is rectangular in plan view and extends from the longitudinal center of the widthwise plate portion 44 toward the head. The pair of sub-support plates 42, 42 are respectively arranged on both sides of the longitudinal plate portion 45 of the main support plate 41 in the width direction. The length of the longitudinal plate portion 45 of the main support plate 41 along the longitudinal direction is shorter than the length of the sub-support plates 42 along the longitudinal direction. As a result, when a pair of sub-support plates 42, 42 are placed on both sides in the width direction of the longitudinal plate portion 45 of the main support plate 41, a space 47 is formed between the tip portions of the pair of sub-support plates 42, 42 (the ends opposite to the width direction plate portion 44 side of the main support plate 41).

[0021] Referring to Figure 4, a pair of positioning blocks 49, 49 are provided projecting from the center of the longitudinal direction (width direction of the table 6) on the back surface of the widthwise plate portion 44 of the main support plate 41, spaced apart from each other along the longitudinal direction. The positioning blocks 49 project in a direction perpendicular to the main support plate 41. Multiple pin receiving holes 51, 51 are formed in the positioning blocks 49 at intervals along the direction of their projection. In this embodiment, the positioning block 49 has two pin receiving holes 51, 51. These pin receiving holes 51, 51 are split holes, and the inner diameter of the pin receiving holes 51, 51 can be reduced by tightening the fastening bolts 52.

[0022] The distance between the pin receiving holes 51, 51 of the pair of positioning blocks 49, 49 corresponds to the distance L between the pair of positioning pins 34, 34 (see Figure 7). The offset mechanism 38 consists of the operating table body 3 side, i.e., the support pins 23, 23 of the pair of gear body parts 17, 17 and the pair of positioning pins 34, 34 from the bracket 30, and the pin receiving holes 51, 51 provided in the pair of positioning blocks 49, 49 provided in the widthwise plate portion 44 of the main support plate 41 of the upper body support table 10. The support pins 23, 23 of the pair of gear body parts 17, 17 and the pair of positioning pins 34, 34 from the bracket 30 correspond to the pin members.

[0023] Then, as shown in Figure 4, if the upper body support table 10 is not offset from the waist support table 11 along its width direction, the pair of positioning pins 34, 34 from the bracket 30 are inserted into, for example, the pin receiving holes 51, 51 on the side of the pair of positioning blocks 49, 49 provided on the widthwise plate portion 44 of the upper body support table 10 that are closest to the widthwise plate portion 44, and fixed in place.

[0024] Furthermore, referring to Figures 6 and 7, when offsetting the upper body support table 10 from the waist support table 11 to one side in the width direction, one positioning pin 34 from the bracket 30 and one support pin 23 from the gear body portion 17 are inserted into the pin receiving holes 51, 51 on the side of the pair of positioning blocks 49, 49 of the upper body support table 10 that are closest to, for example, the width direction plate portion 44, and fixed in place. This allows the upper body support table 10 to be offset from the waist support table 11 outward (to one side) in the width direction by a predetermined distance (pitch), for example, about 140 mm (matching the distance L (see Figure 7)).

[0025] Furthermore, although not shown in the diagram, when offsetting the upper body support table 10 to the other side in the width direction from the waist support table 11, the other positioning pin 34 from the bracket 30 and the support pin 23 of the other gear body portion 17 are similarly inserted and fixed into the pin receiving holes 51, 51 on the side of the pair of positioning blocks 49, 49 of the upper body support table 10 that are close to, for example, the width direction plate portion 44. This allows the upper body support table 10 to be offset from the waist support table 11 outward in the width direction (to the other side) by a predetermined distance (pitch), for example, 140 mm.

[0026] Then, referring to Figure 6, the upper body support table 10 is supported on the operating table body 3 via a pair of gear body parts 17, 17 and a bracket 30, around a pin member 26 that extends in the width direction of the table 6, or in other words, rotatably along the vertical direction with respect to the pin member 26 that extends in the width direction of the table 6. Furthermore, the upper body support table 10 is configured to be movable along the width direction of the table 6 by an offset mechanism 38, and can be fixed at any position along that width direction, that is, can be offset at a predetermined pitch.

[0027] Referring to Figure 4, the main support plate 41 and the pair of sub-support plates 42, 42 of the upper body support table 10 are detachably connected. In other words, the main support plate 41 and the sub-support plates 42 are detachably connected by a connecting mechanism 53. A pair of connecting mechanisms 53, 53 are provided for the pair of sub-support plates 42, 42. The connecting mechanism 53 includes a first fixing member 55 that protrudes from the back surface of the sub-support plate 42 in a direction perpendicular to the sub-support plate 42, a second fixing member 56 that protrudes from the widthwise plate portion 44 of the main support plate 41 in a direction perpendicular to the main support plate 41, and a connecting shaft member 57 that extends from the first fixing member 55 and is connected to the second fixing member 56.

[0028] The first fixing member 55 fixes one axial end of the connecting shaft member 57 and detachably fixes the second connecting shaft portion 87 of the connecting member 75 of the support mechanism 65, which will be described later. The second fixing member 56 detachably fixes the other axial end of the connecting shaft member 57. A connecting bar member 58 extending in the width direction is fixed to the connecting shaft member 57. The longitudinal end of the connecting bar member 58 can engage with or disengage from the shaft portion of a bolt 60 fixed to the back surface of the longitudinal plate portion 45 of the main support plate 41.

[0029] Referring to Figure 4, the main support plate 41 and the sub-support plate 42 can be integrally connected by fixing the other axial end of the connecting shaft member 57 to the second fixing member 56 and engaging the longitudinal end of the connecting bar member 58 with the shaft of a bolt 60 provided on the back surface of the longitudinal plate portion 45 of the main support plate 41. On the other hand, referring to Figures 4, 6, and 7, the sub-support plate 42 can be separated from the main support plate 41 by removing the other axial end of the connecting shaft member 57 from the second fixing member 56 and separating the longitudinal end of the connecting bar member 58 from the shaft of a bolt 60 provided on the back surface of the longitudinal plate portion 45 of the main support plate 41. Referring to Figure 4, a handle 59 for hospital staff to grasp is provided on the back surface of the longitudinal plate portion 45 of the main support plate 41, along its longitudinal direction. By using this handle 59, hospital staff can easily handle the upper body support table 10.

[0030] Referring to Figures 1, 4, and 5, the upper body support table 10 is provided with a head support device 62 for supporting the patient's head. The head support device 62 comprises a head support section 64 for supporting the patient's head, and a support mechanism 65 for supporting the head support section 64 on either of the sub-support plates 42 (sub-support plates 42 that have not been removed) of the upper body support table 10. The head support section 64 comprises a rectangular base plate section 68 in plan view, and a pair of side plate sections 69 erected from both ends of the base plate section 68 in the width direction. The side plate sections 69 are rotatably supported around both ends of the base plate section 68 via hinge sections 70, 70.

[0031] Referring to Figure 4, the support mechanism 65 comprises a support column portion 73, a support member 74, and a connecting member 75. A cylindrical support column portion 73 is provided projecting from the back surface of the bottom plate portion 68 of the head support portion 64 via a shaft portion 77. The support column portion 73 is positioned in the space 47 between the tips of the pair of sub-support plates 42, 42 of the upper body support table 10 (the ends opposite to the widthwise plate portion 44 side of the main support plate 41). A through hole 79 is formed in the support column portion 73, penetrating in the radial direction. An L-shaped support member 74 is inserted through the through hole 79.

[0032] The support member 74 has a first support shaft portion 81 that extends in the width direction of the upper body support table 10 and is inserted through a through hole 79 of the support column portion 73, and a second support shaft portion 82 that is bent from the end of the first support shaft portion 81 and extends in a direction perpendicular to the bottom plate portion 68 of the head support portion 64. The support column portion 73 is provided with a lever 83 for rotating the first support shaft portion 81 to attach or detach it from the support column portion 73 at any axial position. The tip of the second support shaft portion 82 of the support member 74 and the tip of the first connecting shaft portion 86 of the connecting member 75 are connected by a connecting piece 84. The connecting member 75 has an L-shape.

[0033] The connecting member 75 has a first connecting shaft portion 86 that extends in a direction perpendicular to the bottom plate portion 68 of the head support portion 64 and whose tip is connected to the connecting piece 84, and a second connecting shaft portion 87 that bends from the base end of the first connecting shaft portion 86 and extends along the longitudinal direction of the sub-support plate 42 (the sub-support plate 42 that has not been removed). The second connecting shaft portion 87 is positioned close to the connecting shaft member 57 of the connecting mechanism 53 and is arranged so as to overlap the connecting shaft portion 57 and the upper body support table 10 in a rear view. The axial position of the second connecting shaft portion 87 of the connecting member 75 is detachably fixed to the first fixing member 55 of the connecting mechanism 53. As a result, the head support portion 64 of the head support device 62 is supported by the remaining sub-support plate 42 (either one of the pair of sub-support plates 42, 42) of the upper body support table 10 via the support mechanism 65.

[0034] Then, when performing surgery on the patient's shoulder, first, the head support table and back support table are removed from the operating table 2. Next, referring to Figures 6 and 7, one of the sub-support plates 42 (the sub-support plate 42 corresponding to the patient's shoulder (affected area)) is removed from the main support plate 41 on the upper body support table 10. Specifically, the connecting shaft member 57 of the connecting mechanism 53 provided on one of the sub-support plates 42 is removed from the second fixing member 56 provided on the widthwise plate portion 44 of the main support plate 41, while the longitudinal end of the connecting bar member 58 is separated from the shaft portion of the bolt 60 provided on the back surface of the longitudinal plate portion 45 of the main support plate 41, thereby removing only one of the sub-support plates 42 from the main support plate 41.

[0035] At this time, the head support portion 64 of the head support device 62 is supported by the support mechanism 65 against the other remaining sub-support plate 42 of the upper body support table 10, as described above. Subsequently, the upper body support table 10 is attached to the operating table body 3 together with the head support device 62 using the offset mechanism 38 so as to be offset by a predetermined distance in one direction in the width direction from the lumbar support table 11, that is, towards the shoulder side where the patient's surgery is to be performed.

[0036] In detail, one positioning pin 34 from the bracket 30 and one support pin 23 from the gear body 17 on the operating table body 3 side are inserted into, for example, the pin receiving holes 51, 51 on the side of the pair of positioning blocks 49, 49 provided on the widthwise plate portion 44 of the upper body support table 10 that are closest to the widthwise plate portion 44, and fixed in place. As a result, the upper body support table 10 is offset a predetermined distance, for example, 140 mm, outward in the widthwise direction (to one side) from the lumbar support table 11 together with the head support device 62 and fixed to the operating table body 3.

[0037] Next, referring to Figure 8, in order to position the patient in a beach chair position, the pair of hydraulic cylinders 15, 15 are driven to rotate the upper body support table 10 vertically upward at a predetermined angle relative to the lumbar support table 11 (operating table body 3). With the table 6 in this configuration, the patient is placed on the table 6, that is, on the leg support table 12, the lumbar support table 11, and the upper body support table 10 (including the head support device 62), and the surgery begins. Subsequently, when taking X-ray images of the affected area (shoulder) using the C-arm 90 during or immediately after the surgery, the ends 91, 91 of the C-arm 90 are positioned vertically, and the patient's shoulder is positioned between the ends 91, 91 to take X-ray images of the affected area.

[0038] At this time, since no metal parts or other objects that do not transmit X-rays are placed between the ends 91, 91 of the C-arm 90, a good X-ray image of the affected area can be obtained. Furthermore, the operation of attaching the upper body support table 10 to the operating table body 3 of the operating table 2 via the bracket 30, and moving the upper body support table 10 to the desired position, i.e., rotating and offsetting it, is not limited to the above-described order of operations, and the order may be changed as appropriate.

[0039] In the patient support device 1 according to this embodiment, as described above, the upper body support table 10 is configured to be movable along the width direction of the table 6 of the operating table 2 and to be fixed at any position along that width direction. Therefore, when taking X-rays of the affected area, particularly by sandwiching it from above and below, using the C-arm 90 during or immediately after surgery, no metal parts or the like are placed between the ends 91, 91 of the C-arm 90, i.e., within the imaging range of the C-arm 90, so a good X-ray image of the affected area can be obtained.

[0040] Furthermore, in the patient support device 1 according to this embodiment, an offset mechanism 38 is provided between the operating table body 3 and the upper body support table 10. This allows for a simple structure to offset (move) the operating table 2's table 6 by a predetermined distance in the width direction, thereby reducing manufacturing costs.

[0041] Furthermore, in the patient support device 1 according to the present embodiment, the offset mechanism 38 includes gear main bodies 17, 17 provided on the operating table main body 3 side, a plurality of support pins 23, 23 and positioning pins 34, 34 provided on the bracket 30, and pin receiving holes 51, 51 provided in a pair of positioning blocks 49, 49 on the upper body support table 10 side. Therefore, the structure can be simplified, leading to a further reduction in manufacturing costs.

[0042] Furthermore, in the patient support device 1 according to the present embodiment, in the upper body support table 10, it is possible to remove either one of the pair of sub-support plates 42, 42 from the main support plate 41, which is particularly effective for shoulder surgery.

[0043] Furthermore, in the patient support device 1 according to the present embodiment, the head support device 62 can also be moved along the width direction of the table 6 of the operating table 2 together with the upper body support table 10, enabling problem-free X-ray imaging by the C-arm 90 during or immediately after the surgery and obtaining good X-ray images.

[0044] In the present embodiment, the offset mechanism 38 provided between the operating table main body 3 and the upper body support table 10 offsets the upper body support table 10 by a predetermined distance in the width direction with respect to the waist support table 11 (table 6). However, as a drive source, for example, an electric motor or a hydraulic cylinder can be adopted, and as a drive transmission mechanism, for example, a rotary-linear conversion mechanism, a rack and pinion, a linear guide, etc. can be adopted to configure the upper body support table 10 to be movable along the width direction of the table 6 and fixable at an arbitrary position along the width direction.

[0045] Furthermore, without a drive source, the upper body support table 10 may be moved in the width direction relative to the lumbar support table 11 and fixed at an arbitrary position along the width direction by manual operation, such as by rotating a handle or lever, by staff in the operating room. In this embodiment, since the offset mechanism 38 with a preset offset amount as in the embodiment described above is not employed, the amount of offset of the upper body support table 10 in the width direction relative to the lumbar support table 11 can be appropriately set based on the patient's body shape or other circumstances, which is effective. In short, as described above, the upper body support table 10 can be moved along the width direction from the lumbar support table 11 and fixed at an arbitrary position along the width direction (not by a preset offset amount).

[0046] Furthermore, in the offset mechanism 38 according to this embodiment, the offset amount of the upper body support table 10 is, for example, only 140 mm, but it is also possible to configure it so that there are multiple offset amounts.

[0047] Furthermore, in this embodiment, the offset mechanism 38 is provided with pin members (support pins 23, 23 of a pair of gear body parts 17, 17 and a pair of positioning pins 34, 34 from the bracket 30) on the operating table body 3 side and pin receiving holes 51, 51 on the upper body support table 10 side. However, the pin receiving holes may be provided on the operating table body 3 side and the pin members on the upper body support table 10 side.

[0048] 1 Patient support device, 2 Operating table, 3 Operating table body, 6 Table, 10 Upper body support table, 23 Support pin (pin member), 34 Positioning pin (pin member), 38 Offset mechanism, 41 Main support plate, 42 Sub-support plate, 44 Width direction plate section, 45 Long direction plate section, 51 Pin receiving hole, 62 Head support device

Claims

1. A patient support device having an upper body support table that is detachably attached as a component of the operating table and supports the upper body of a patient, wherein the upper body support table is rotatably supported around an axis extending in the width direction of the table, is movable along the width direction of the table, and is configured to be fixable at any position along that width direction.

2. The patient support device according to claim 1, characterized in that the upper body support table is configured to be movable at a predetermined pitch in the width direction relative to the table by an offset mechanism.

3. The patient support device according to claim 2, characterized in that the offset mechanism comprises a plurality of pin members provided on either the operating table body supporting the table or the upper body support table, and pin receiving holes provided on the other of either the operating table body or the upper body support table for receiving each of the pin members.

4. The patient support device according to claim 1, characterized in that the upper body support table comprises a main support plate which is substantially T-shaped in plan view and has a width-direction plate portion and a longitudinal plate portion, and a pair of sub-support plates which are substantially rectangular in plan view and are arranged on both sides in the width direction of the longitudinal plate portion of the main support plate, respectively, so as to be detachable from each other.

5. The patient support device according to claim 1, characterized in that a head support device for supporting the patient's head is integrally provided on the upper body support table.

Images