阅读说明：本技术 Ct床用手臂固定装置及ct设备 (Arm fixing device for CT bed and CT equipment ) 是由 邓春娟 梁冰 曾健滢 牛立志 左建生 于 2021-09-30 设计创作，主要内容包括：本发明涉及一种CT床用手臂固定装置及CT设备,CT床用手臂固定装置包括固定件、支撑组件及手臂托,所述固定件包括用于置放于CT床的中部位置的压板及用于搭在CT床的侧部位置的安装板,所述压板呈与CT床的中部位置匹配的弧形,所述安装板与所述压板的侧边连接,所述支撑组件一端与所述安装板连接,所述支撑组件另一端与所述手臂托连接,所述手臂托悬空设于所述压板的上方。患者躺在CT床的中间位置将压板压在身下,手臂放在压板上方悬空的手臂托上,使手臂固定在患者胸前区,不影响CT扫描,手臂处于较为放松的状态,利用患者的重力使CT床用手臂固定装置固定在CT床上,安装和拆卸方便快捷。(The invention relates to an arm fixing device for a CT (computed tomography) bed and CT equipment, wherein the arm fixing device for the CT bed comprises a fixing part, a supporting component and an arm support, the fixing part comprises a pressing plate and a mounting plate, the pressing plate is used for being placed in the middle of the CT bed, the mounting plate is used for being placed on the side of the CT bed, the mounting plate is in an arc shape matched with the middle of the CT bed, the mounting plate is connected with the side edge of the pressing plate, one end of the supporting component is connected with the mounting plate, the other end of the supporting component is connected with the arm support, and the arm support is arranged above the pressing plate in a hanging mode. The patient lies in the intermediate position of CT bed and presses the clamp plate under one's body, and the arm is put on the unsettled arm support in clamp plate top, makes the arm fix in patient's precordial, does not influence CT scanning, and the arm is in comparatively relaxed state, utilizes patient's gravity to make CT bed fix on CT bed with arm fixing device, installation and dismantlement convenient and fast.)

1. The utility model provides a CT is arm fixing device for bed, its characterized in that, includes mounting, supporting component and arm support, the mounting is including being used for putting the clamp plate of the middle part position of CT bed and being used for taking the mounting panel in the lateral part position of CT bed, the clamp plate is the arc that matches with the middle part position of CT bed, the mounting panel with the side of clamp plate is connected, supporting component's one end with the mounting panel is connected, supporting component's the other end with the arm holds in the palm and connects, the arm holds in the palm unsettled top of locating the clamp plate.

2. The arm fixing device for the CT bed as recited in claim 1, wherein the support assembly comprises a first rod and a universal mechanism, one end of the first rod is rotatably connected with the mounting plate, and the other end of the first rod is rotatably connected with the arm support through the universal mechanism.

3. The arm fixing device for the CT bed as claimed in claim 2, wherein the universal mechanism comprises a fixing portion, a locking portion, a ball joint and a stopper, the top end of the fixing portion is connected to the arm support, the bottom end of the fixing portion is provided with a mounting hole, the side wall of the fixing portion is provided with a locking hole communicated with the mounting hole, the stopper is provided with a ball hole therethrough, the rod end of the ball joint passes through the ball hole and extends into the mounting hole, the ball end of the ball joint is limited in the ball hole, the locking portion penetrates into the locking hole to lock the rod end of the ball joint on the fixing portion, one end of the first rod is provided with a limiting portion, the side surface of the limiting portion is provided with an external thread, the end surface of the limiting portion is provided with an arc-shaped groove, the stopper is provided with an internal thread, and the limiting portion is locked on the stopper by the external thread and the internal thread, the ball head end and the groove are in a tight attaching state and a loose state.

4. The arm fixing device for the CT bed as recited in claim 3, wherein the universal mechanism further comprises a first limiting washer, the first limiting washer is sleeved on the limiting portion, and the first limiting washer can be pressed or loosened during the process of the thread fit of the limiting stopper and the limiting portion.

5. The arm fixing device for the CT bed as recited in claim 2, wherein the support assembly further comprises a second rod and a locking rod, one end of the second rod is connected with the mounting plate, the other end of the second rod is provided with a joint portion, one end of the first rod, which is far away from the universal mechanism, is provided with a matching portion, one end of the locking rod penetrates through the joint portion and extends into the matching portion and is in threaded connection with the matching portion, and the joint portion and the matching portion are in a tight attaching state and a loose state.

6. The arm fixing device for the CT bed as recited in claim 5, wherein an annular limiting groove is formed on one end surface of the joint part, and a limiting block is arranged on one end surface of the matching part; or a limiting block is arranged on one end face of the joint part, an annular limiting groove is formed in one end face of the matching part, the limiting block is in nested matching with the limiting groove and can rotate relatively, and the axial lead of the limiting groove is the same as that of the locking rod.

7. The arm fixing device for the CT bed as recited in claim 6, wherein the support assembly further comprises a second limiting washer, the second limiting washer is sleeved on the limiting block, and the locking rod can press or release the second limiting washer in the process of being in threaded fit with the fitting part.

8. The arm fixing device for the CT bed as recited in claim 6, wherein the support assembly further comprises a cushion washer, a counter bore is formed in an end surface of the fitting portion, which is far away from the joint portion, the cushion washer is installed in the counter bore, one end of the locking rod, which is in threaded fit with the fitting portion, is connected with the cushion washer, the joint portion and the fitting portion are in a tight contact state, and a moving gap is reserved between the cushion washer and a bottom wall of the counter bore; the end face, away from the matching portion, of the joint portion is provided with a sunken groove, the locking rod is provided with a boss, and the boss is limited in the sunken groove.

9. The arm fixing device for the CT bed according to any one of claims 5-8, further comprising a mounting seat, a sliding plate and a locking member, wherein the mounting seat comprises an upper plate, a lower plate and a connecting plate connecting the upper plate and the lower plate, the upper plate and the lower plate are arranged at an interval, the sliding plate is fixed on the mounting plate and is arranged between the upper plate and the lower plate in a penetrating manner, the mounting seat and the sliding plate can slide relatively, the upper plate and the lower plate are both provided with mounting through holes, one end of the second rod, which is far away from the locking rod, is arranged in the mounting through hole, the connecting plate is provided with a locking through hole, and one end of the locking member, which passes through the locking through hole, can abut against the sliding plate to enable the second rod to abut against the sliding plate.

10. A CT apparatus comprising a CT table and an arm fixing device for a CT table according to any one of claims 1 to 9, wherein the CT table comprises a central portion and lateral portions on both sides of the central portion, the central portion has an arc-shaped longitudinal cross section, the pressing plate is disposed at the central portion of the CT table, and the mounting plate is overlapped on the lateral portions of the CT table.

Technical Field

The invention relates to the technical field of medical instrument auxiliary tools, in particular to an arm fixing device for a CT (computed tomography) bed and CT equipment.

Background

In the process of carrying out solid tumor minimally invasive ablation treatment operation in a CT room, when the puncture operation is carried out through the right side monster rib region of a patient, the right side monster rib region of the patient needs to be exposed, and the right upper limb of the patient cannot be extended due to the limitation of CT scanning. The conventional method is to lift the upper limb on the right side of the patient over the top of the head, fix the patient on a drape on a CT bed by using a leather clamp, or place the right upper limb in front of the left chest, and then clamp the cuff by using the leather clamp to fix the upper limb. When the operation is performed in the posture descending operation, on one hand, the patient is easy to move limbs, so that the operation is influenced; particularly, when shoulder abduction and stretching movement are limited, such as shoulder arthritis and shoulder trauma history, or a local anesthesia patient cannot tolerate the body position for a long ablation time and cannot fully expose the puncture part, the effect of ablation treatment is influenced. On the other hand, part of the operation is time-consuming and needs to be matched with general anesthesia. Such as: when the hyperextension time of the right upper limb of a patient is too long (more than 1h), the nerve of the brachial plexus of the right upper limb is easy to be pulled to cause serious operation complications.

Traditional limbs support equipment generally adopts fastening screw or limit structure locking or card on the operation table, though applicable most operation tables to solve the problem that the arm was put in patient's art, but the installation and the dismantlement process are more loaded down with trivial details, and because the limitation of CT room equipment, the space is limited, and limbs support equipment can't install and use on the CT bed, therefore is difficult to be used in the CT room.

Disclosure of Invention

Based on this, it is necessary to provide arm fixing device and CT equipment for CT bed to the problem is put to patient's position when CT room treatment, and not only installation and dismantlement are convenient, can effectively solve patient's position when CT room treatment and put the problem moreover, avoid influencing operation and damage the patient.

The utility model provides a CT is arm fixing device for bed, includes mounting, supporting component and arm support, the mounting is including being used for putting the clamp plate of the middle part position of CT bed and being used for taking the mounting panel at the lateral part position of CT bed, the clamp plate is the arc that matches with the middle part position of CT bed, the mounting panel with the side of clamp plate is connected, supporting component's one end with the mounting panel is connected, supporting component's the other end with the arm holds in the palm and connects, the arm holds in the palm unsettled the top of locating the clamp plate.

In one embodiment, the support assembly includes a first rod and a universal mechanism, one end of the first rod is rotatably connected to the mounting plate, and the other end of the first rod is rotatably connected to the arm support through the universal mechanism.

In one embodiment, the universal mechanism comprises a fixing part, a locking part, a ball joint and a stopper, the top end of the fixing part is connected with the arm support, the bottom end of the fixing part is provided with a mounting hole, the side wall of the fixing part is provided with a locking hole communicated with the mounting hole, the stopper is provided with a through ball head hole, the rod end of the ball joint penetrates through the ball head hole and extends into the mounting hole, the ball head end of the ball joint is limited in the ball head hole, the locking part penetrates into the locking hole to lock the rod end of the ball joint on the fixing part, one end of the first rod is provided with a limiting part, the side surface of the limiting part is provided with an external thread, the end surface of the limiting part is provided with an arc-shaped groove, the stopper is provided with an internal thread, and the limiting part is locked on the stopper through the external thread and the internal thread in a matching manner, the ball head end and the groove are in a tight attaching state and a loose state.

In one embodiment, the universal mechanism further comprises a first limiting gasket, the first limiting gasket is sleeved on the limiting part, and the first limiting gasket can be pressed or loosened in the process of threaded matching of the limiter and the limiting part.

In one embodiment, the support assembly further comprises a second rod and a locking rod, one end of the second rod is connected with the mounting plate, the other end of the second rod is provided with a joint portion, one end of the first rod, which is far away from the universal mechanism, is provided with a matching portion, one end of the locking rod penetrates through the joint portion, extends into the matching portion and is in threaded connection with the matching portion, and the joint portion and the matching portion are in a tight attaching state and a loose state.

In one embodiment, an annular limiting groove is formed in one end face of the joint part, and a limiting block is arranged on one end face of the matching part; or a limiting block is arranged on one end face of the joint part, an annular limiting groove is formed in one end face of the matching part, the limiting block is in nested matching with the limiting groove and can rotate relatively, and the axial lead of the limiting groove is the same as that of the locking rod.

In one embodiment, the supporting assembly further comprises a second limiting washer, the second limiting washer is sleeved on the limiting block, and the locking rod and the matching part can be compressed or loosened in the thread matching process.

In one embodiment, the support assembly further comprises a buffer gasket, a counter bore is formed in the end face, away from the joint part, of the matching part, the buffer gasket is installed in the counter bore, one end, in threaded matching with the matching part, of the locking rod is connected with the buffer gasket, the joint part and the matching part are in a tight contact state, and a moving gap is reserved between the buffer gasket and the bottom wall of the counter bore; the end face, away from the matching portion, of the joint portion is provided with a sunken groove, the locking rod is provided with a boss, and the boss is limited in the sunken groove.

In one embodiment, the arm fixing device for the CT bed further includes an installation seat, a sliding plate and a locking member, the installation seat includes an upper plate, a lower plate and a connecting plate connecting the upper plate and the lower plate, the upper plate and the lower plate are arranged at an interval, the sliding plate is fixed on the installation plate and penetrates between the upper plate and the lower plate, the installation seat and the sliding plate can slide relatively, the upper plate and the lower plate are both provided with installation through holes, one end of the second rod, far away from the locking rod, penetrates through the installation through holes, the connecting plate is provided with a locking through hole, and one end of the locking member penetrates through the locking through hole and can abut against the sliding plate to enable the second rod to abut against the sliding plate.

A CT device comprises a CT bed and an arm fixing device for the CT bed, wherein the CT bed comprises a middle position and lateral positions located on two sides of the middle position, the longitudinal section of the middle position is arc-shaped, a pressing plate is arranged in the middle position of the CT bed, and a mounting plate is lapped on the lateral positions of the CT bed.

When above-mentioned arm fixing device and CT equipment use for the CT bed, put the clamp plate in the intermediate position of CT bed, the lateral part position at the CT bed is taken to the mounting panel, the patient lies in the intermediate position of CT bed and presses the clamp plate under one's body, the clamp plate is the arc with the middle part position matching of CT bed, can coincide with the radian of the middle part position of CT bed well, do not influence the position of patient and put, put the arm on the unsettled arm support in clamp plate top, make the arm fix at patient precordial region, easily pass through the scanning window of CT machine, do not influence CT scanning, can make the patient arm be in comparatively relaxed state simultaneously, protect patient upper limbs nerve, avoid hyperextension position tractive damage patient. And utilize patient's gravity to make CT bed can fix on CT bed well with arm fixing device, can take off from CT bed fast when not needing to use, directly put on CT bed when needing to use, the installation with dismantle convenient and fast, need not to dispose extra locking device. The mounting plate extends outwards from the side edge of the pressing plate and is arranged at the side part of the CT bed, and the arm support is arranged above the pressing plate in a hanging manner, so that the use of the limited space of the CT room can be met; simple structure and can be popularized and used clinically.

Drawings

Fig. 1 is a schematic structural view of an arm fixing device for a CT bed according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram taken in a split state at A in FIG. 1;

FIG. 3 is a schematic cross-sectional view taken at A in FIG. 1;

FIG. 4 is a schematic diagram of FIG. 1 taken at B, split;

FIG. 5 is a schematic cross-sectional view taken at B in FIG. 1;

fig. 6 is an enlarged schematic view at C in fig. 1.

Description of reference numerals:

10. a fixing member; 110. pressing a plate; 120. mounting a plate; 20. a support assembly; 210. a first lever; 212. a limiting part; 2122. a groove; 214. a fitting portion; 2142. a limiting block; 2144. a counter bore; 2146. moving the gap; 220. a universal mechanism; 221. a fixed part; 222. a locking portion; 223. a ball joint; 2232. a rod end; 2234. a ball end; 224. a stopper; 2242. a ball head hole; 225. a first limit washer; 230. a second lever; 232. a joint portion; 2322. a limiting groove; 2324. sinking a groove; 240. a locking lever; 242. a boss; 250. a second limit washer; 260. a cushion washer; 270. a protective cover; 280. rotating the rod; 290. a screw; 30. a arm support; 40. a mounting seat; 402. mounting a through hole; 410. an upper plate; 420. a lower plate; 430. a connecting plate; 50. a sliding plate; 60. a locking member; 70. a support bar; 80. and (4) screws.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Traditional limbs support equipment generally adopts parts such as screw to lock on the operation bed, and the installation is dismantled loaded down with trivial details on the one hand, and on the other hand because the CT bed generally adopts low-density material preparation, causes the damage of CT bed easily through the mode of screw with traditional limbs support equipment locking in the CT bed, therefore leads to traditional limbs support equipment can't be used in the CT bed.

Referring to fig. 1, an embodiment of the present invention provides an arm fixing device for a CT bed, which includes a fixing member 10, a supporting assembly 20 and an arm rest 30. The fixing member 10 includes a pressing plate 110 for placing at a middle position of the CT table and a mounting plate 120 for lapping at a side position of the CT table.

Further, the pressing plate 110 has an arc shape matching with the middle position of the CT bed. The mounting plate 120 is connected to a side of the pressure plate 110. The mounting plate 120 is a straight plate that matches the lateral position of the CT bed. One end of the supporting component 20 is connected to the mounting plate 120, the other end of the supporting component 20 is connected to the arm support 30, and the arm support 30 is suspended above the pressing plate 110. The mounting plate 120 may be disposed on one side or both sides of the pressure plate 110 as required; correspondingly, the support assembly 20 and the arm rest 30 can be connected to the mounting plate 120 on either side to meet the requirement of single-sided or double-sided arm support. Optionally, the mounting plate 120 is formed by extending the side edges of the platen 110, and the width of the mounting plate 120 is smaller than or equal to the width of the side position of the CT bed. The fixing member 10 is made of a material that does not affect CT scan imaging, such as carbon fiber.

When the CT machine is used, the pressing plate 110 is placed in the middle of the CT bed, the mounting plate 120 is placed at the side of the CT bed, a patient lies in the middle of the CT bed to press the pressing plate 110 under the patient, the pressing plate 110 is arc-shaped and matched with the middle of the CT bed, the arc-shaped pressing plate can be well matched with the radian of the middle of the CT bed, the position arrangement of the patient is not influenced, the patient can be comfortably and flatly placed on the CT bed, the pressing plate 110 is stably fixed under the patient, the arm is placed on the arm support 30 suspended above the pressing plate 110, the arm is fixed on the chest and the front area of the patient, the CT scanning is not influenced by passing through a scanning window of the CT machine, meanwhile, the arm of the patient can be in a relatively relaxed state, the upper limb nerve of the patient is protected, and the patient is prevented from being pulled and damaged by overextension. And utilize patient's gravity to make CT bed can fix on CT bed well with arm fixing device, can take off from CT bed fast when not needing to use, directly put on CT bed when needing to use, the installation with dismantle convenient and fast, need not to dispose extra locking device, simple structure can use in clinical popularization.

Further, the mounting plate 120 extends outwards from the side edge of the pressing plate 110 to be lapped at the side position of the CT bed, the arm support 30 is arranged above the pressing plate 110 in a suspending manner, and the whole device is located in the plane of the orthographic projection of the CT bed, so that interference with the CT indoor equipment is avoided, and the use of the limited space of the CT room can be met.

Shown in fig. 1 is a single-sided mounting plate 120. The patient lies on the CT bed with feet facing inwards and head facing outwards, the pressing plate 110 is pressed between the lower part of the back and the CT bed, the supporting component 20 is positioned close to the left ear, the arm on the right side is lifted and placed on the arm support 30 to be suspended in front of the chest, and the right upper limb of the patient can be in a relatively relaxed state. Optionally, the arm rest 30 is a long arc-shaped plate lined with a cotton pad and wrapped with a polyurethane material. In operation, the patient's arm is secured to the arm rest 30 by a restraining strap.

Referring to fig. 1-3, in one embodiment, the support assembly 20 includes a first rod 210 and a gimbal mechanism 220. One end of the first rod 210 is rotatably connected to the mounting plate 120, and the other end of the first rod 210 is rotatably connected to the arm support 30 via the universal mechanism 220. The arm support 30 is connected with the fixing member 10 through the first rod 210 and is suspended, and the arm support 30 can meet the use requirements of different patients by adjusting the angle of the first rod 210 and the angle and the position of the arm support 30 through the universal mechanism 220. Alternatively, the first rod 210 may be pivotally connected to the mounting plate 120 by a hinge, a pan and tilt head, or the like.

Specifically, referring to fig. 2 and 3, in one embodiment, the universal mechanism 220 includes a fixing portion 221, a locking portion 222, a ball joint 223, and a stopper 224. The top end of the fixing portion 221 is connected to the arm rest 30. The top end of the fixing portion 221 is fixedly connected to the bottom end of the arm support 30. The bottom end of the fixing portion 221 is provided with a mounting hole, and the side wall of the fixing portion 221 is provided with a locking hole communicated with the mounting hole. A nut fitted to the locking portion 222 may be welded outside the locking hole to screw-couple the locking portion 222 and the fixing portion 221.

Further, the stopper 224 is provided with a ball hole 2242 therethrough. One end of the ball joint 223 is a rod end 2232, the other end is a ball end 2234, the outer diameter of the rod end 2232 is small, the outer diameter of the ball end 2234 is large, the outer diameter of the ball end 2234 is larger than the maximum inner diameter of the ball bore 2242, and the outer diameter of the rod end 2232 is smaller than the maximum inner diameter of the ball bore 2242. The rod end 2232 of the ball joint 223 firstly passes through the ball hole 2242, then the rod end 2232 extends into the mounting hole, and the locking portion 222 penetrates into the locking hole to lock the rod end 2232 of the ball joint 223 on the fixing portion 221; the ball end 2234 of the ball joint 223 cannot pass through the ball hole 2242, and is therefore limited in the ball hole 2242. The rod end 2232 is provided with a through hole for the locking portion 222 to pass through, and one end of the locking portion 222 can extend into the through hole of the rod end 2232 to be connected with the rod end 2232.

Further, one end of the first rod 210 is provided with a limiting portion 212, the side surface of the limiting portion 212 is provided with an external thread, the end surface of the limiting portion 212 is provided with an arc-shaped groove 2122, the limiter 224 is provided with an internal thread, the limiting portion 212 is locked on the limiter 224 through the external thread and the internal thread in a matching manner, and the ball end 2234 and the groove 2122 have a tight attaching state and a loose state. When the ball end 2234 and the groove 2122 are in a close state, the ball joint 223 and the stopper 224 are fixed relative to each other, and cannot rotate therebetween, so that the arm support 30 is at a fixed position; the position limiter 224 is rotated to relatively separate the position limiter 224 from the position limiting part 212, the ball end 2234 and the groove 2122 are in a loose state, at this time, the ball joint 223 can rotate in the ball hole 2242 of the position limiter 224 to adjust the angle and position of the arm support 30 to meet the requirements of different patients, and after the adjustment is completed, the position limiter 224 is rotated in the reverse direction to relatively approach the position limiter 224 to the position limiting part 212 until the ball end 2234 and the groove 2122 are in a tight state. Referring to fig. 3, in the present embodiment, the position-limiting portion 212 is a portion of the first rod 210, and the position-limiting portion 212 and the first rod 210 are integrated. Optionally, in other embodiments, the position-limiting part 212 and the first rod 210 are a split mechanism. The position-limiting portion 212 and the first rod 210 can move relatively, and the spacing between the position-limiting portion 212 and the position-limiting stopper 224 is adjusted by rotating the position-limiting portion 212, so that the ball-end 2234 and the groove 2122 can be switched between the tight state and the loose state.

Optionally, in one embodiment, the universal mechanism 220 further includes a first limit washer 225, the first limit washer 225 is sleeved on the limit portion 212, and the limit stopper 224 can press or release the first limit washer 225 during the process of screw-fitting with the limit portion 212. The stopper portion 212 has a shoulder at which the first stopper washer 225 is stopped. The position limiter 224 and the position limiting portion 212 are relatively close to each other to press the first position limiting washer 225, the ball end 2234 and the groove 2122 are in a tight state, the position limiter 224 and the position limiting portion 212 are relatively far from each other to loosen the first position limiting washer 225, and the ball end 2234 and the groove 2122 are in a loose state.

Further, referring to fig. 1, 4 and 5, in one embodiment, the support assembly 20 further includes a second rod 230 and a locking rod 240. One end of the second rod 230 is connected to the mounting plate 120, and the other end of the second rod 230 is provided with a joint portion 232. One end of the first rod 210, which is far away from the universal mechanism 220, is provided with a matching portion 214, one end of the locking rod 240 penetrates through the joint portion 232 and extends into the matching portion 214 and is in threaded connection with the matching portion 214, and the joint portion 232 and the matching portion 214 have a tight attaching state and a loose state. The joint 232 is a through shape. The engaging portion 214 is through-shaped. The locking rod 240 has threads at one end extending into the matching portion 214, the inner wall of the matching portion 214 has threads, the threads are relatively close to each other by rotation, so that the joint portion 232 and the matching portion 214 are in a tight state, and the relative positions of the first rod 210 and the second rod 230 are fixed; the locking lever 240 and the engaging portion 214 are relatively far away from each other by screwing, so that the joint portion 232 and the engaging portion 214 are in a loose state, and the second lever 230 can rotate relative to the first lever 210 to adjust the angle and position of the arm support 30, thereby better satisfying the requirements of different patients. Optionally, the locking lever 240 is connected to a rotating lever 280, and the locking lever 240 is driven to rotate by applying a force to the rotating lever 280, so as to switch between the tight state and the loose state between the joint portion 232 and the matching portion 214. The locking lever 240 is provided with a through hole penetrating through the radial direction thereof, and the rotating rod 280 is inserted into the through hole, so that the rotating rod 280 and the locking lever 240 are in a vertical state, thereby facilitating the application of force to push the rotating rod 280 to drive the locking lever 240 to rotate.

Further, referring to fig. 4 and 5, in one embodiment, an annular limiting groove 2322 is formed in one end surface of the joint portion 232, and a limiting block 2142 is disposed on one end surface of the matching portion 214. Or in other embodiments, a limiting block 2142 is disposed on an end surface of the joint portion 232, and an annular limiting groove 2322 is disposed on an end surface of the matching portion 214. The limiting block 2142 is nested and matched with the limiting groove 2322 and can rotate relatively. The axial lead of the limiting groove 2322 is the same as the axial lead of the locking rod 240. Through the matching of the limiting block 2142 and the limiting groove 2322, the relative displacement between the joint portion 232 and the matching portion 214 is more stable. The stopper 2142 may be configured as a ring-shaped protrusion. The limiting block 2142, the limiting groove 2322 and the rotating rod 280 are coaxially arranged.

Further, in one embodiment, the support assembly 20 further includes a second limiting washer 250, the second limiting washer 250 is sleeved on the limiting block 2142, and the locking rod 240 can press or release the second limiting washer 250 during the process of screw-fitting with the fitting portion 214. The joint part 232 and the matching part 214 are close to each other, the second limiting washer 250 is pressed tightly, and the position of the first rod 210 is fixed; the joint portion 232 and the engagement portion 214 are away from each other, and the first rod 210 can rotate relative to the second rod 230 by loosening the second limit washer 250.

Further, in one embodiment, the support assembly 20 further includes a buffer washer 260, a counter bore 2144 is formed in an end surface of the engaging portion 214 away from the joint portion 232, the buffer washer 260 is installed in the counter bore 2144, and an end of the locking rod 240 that is screwed with the engaging portion 214 is connected to the buffer washer 260. Referring to fig. 4 and 5, the locking rod 240 is coupled to the cushion washer 260 by a screw 290, and in other embodiments, the locking rod 240 may be coupled to the cushion washer 260 by a rivet. Optionally, the screw 290 is covered by a protection cover 270, and the protection cover 270 is nested on the mating portion 214 for dust prevention and protection. Further, when the joint portion 232 and the matching portion 214 are in a tight state, a moving gap 2146 is left between the cushion washer 260 and the bottom wall of the counter bore 2144. The locking lever 240 rotates to drive the engaging portion 214 to move in a direction away from the joint portion 232, that is, in a direction close to the cushion ring 260, when the bottom wall of the counter bore 2144 of the engaging portion 214 abuts on the cushion ring 260, the engaging portion 214 does not move any more, the moving distance of the engaging portion 214 is limited, and excessive or insufficient movement of the engaging portion 214 is avoided, so that the engaging portion 214 and the joint portion 232 are at a proper distance in a loose state. Further, a sunk groove 2324 is formed in the end face, away from the matching portion 214, of the joint portion 232, a boss 242 is arranged on the locking rod 240, and the boss 242 is limited in the sunk groove 2324. The locking rod 240 is limited in the sunk groove 2324 through the boss 242, the locking rod 240 rotates relative to the joint part 232 without moving, and the matching part 214 in threaded connection with the locking rod 240 approaches or departs towards the joint part 232 in the rotating process, so that the locking rod 240 and the joint part 232 are switched between a tight state and a loose state. In other embodiments, the countersunk groove 2324 may not be formed on the joint portion 232, and the boss 242 of the locking lever 240 directly abuts against the end surface of the joint portion 232 to be restricted from moving.

Referring to fig. 1 and 6, in one embodiment, the arm fixing device for a CT bed further includes a mounting base 40, a sliding plate 50 and a locking member 60. The mounting seat 40 includes an upper plate 410, a lower plate 420, and a connecting plate 430 connecting the upper plate 410 and the lower plate 420, wherein the upper plate 410 and the lower plate 420 are arranged at a distance from each other. Specifically, the upper plate 410, the connecting plate 430 and the lower plate 420 are integrally formed to form a "U" shaped structure. Further, the sliding plate 50 is fixed on the mounting plate 120, and the sliding plate 50 is inserted between the upper plate 410 and the lower plate 420. Alternatively, the sliding plate 50 is connected to the mounting plate 120 through two support rods 70, one support rod 70 is welded to the bottom of each of the two ends of the sliding plate 50, a through hole is correspondingly formed in the mounting plate 120, and the screw 80 passes through the through hole to be connected to the support rod 70, so as to fix the support rod 70 to the mounting plate 120. The sliding plate 50 is connected to the mounting plate 120 through the support rod 70, a certain distance is formed between the mounting plate 120 and the sliding plate 50, the mounting base 40 is sleeved on the sliding plate 50, the lower plate 420 is located between the distance between the sliding plate 50 and the mounting plate 120, and the upper plate 410 is located above the sliding plate 50. The mounting base 40 and the sliding plate 50 can slide relative to each other. The sliding plate 50 is extended along the length direction of the mounting plate 120 so that the mounting block 40 can move along the length direction of the sliding plate 50.

Further, the upper plate 410 and the lower plate 420 are both provided with an installation through hole 402, and one end of the second rod 230, which is far away from the locking rod 240, is inserted into the installation through hole 402. Referring to fig. 6, the second rod 230 is limited in the installation through hole 402, and the distance between the second rod 230 and the sliding plate 50 is adjustable. Further, a locking through hole is formed on the connecting plate 430, and one end of the locking member 60 can be abutted against the sliding plate 50 through the locking through hole to enable the second rod 230 to be tightly attached to the sliding plate 50. The locking member 60 rotates and moves towards the direction of the sliding plate 50, the tail end of the locking member can abut against the sliding plate 50, and the distance between the sliding plate 50 and the second rod 230 is continuously reduced until the sliding plate is tightly attached along with the continuous movement of the locking member 60, so that the second rod 230 is fixed on the sliding plate 50; when the position of the second rod 230 needs to be adjusted, the locking member 60 is rotated reversely, the second rod 230 and the mounting base 40 move to the desired position along the sliding plate 50, and then the locking member 60 is rotated to fix the second rod 230.

Referring to fig. 1, another embodiment of the present application provides a CT apparatus including a CT table and the arm fixing device for the CT table. The CT bed comprises a middle position and lateral positions located on two sides of the middle position, the longitudinal section of the middle position is arc-shaped, the pressing plate 110 is arranged in the middle position of the CT bed, and the mounting plate 120 is lapped on the lateral positions of the CT bed. Furthermore, the CT equipment also comprises an annular CT machine, and the CT bed can penetrate through the CT machine.

When the device is used, a patient lies on a CT bed, the pressing plate 110 is stably fixed under the patient, arms can be placed on the arm supports 30 which are suspended above the pressing plate 110, the arms are fixed on the precordial region and can easily pass through a scanning window of a CT machine, CT scanning is not affected, meanwhile, the arms can be in a relatively relaxed state, upper limb nerves are protected, and over-extension traction damage is avoided. Utilize patient's gravity to make CT bed fix on CT bed well with arm fixing device, can take off from CT bed fast when not needing to use, directly put on CT bed when needing to use, the installation with dismantle convenient and fast, need not to dispose extra locking device. The mounting plate 120 extends outwards from the side edge of the pressing plate 110 and is arranged at the side part of the CT bed, the arm support 30 is arranged above the pressing plate 110 in a suspending way, and the whole CT indoor equipment is positioned in the plane where the orthographic projection of the CT bed is positioned, so that the interference with the CT machine is avoided, and the use of the limited space of the CT room can be met.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.