Abstract:
A movable medical case is disclosed. The movable medical case comprises a medical case housing ( 1 ), a medicine box ( 2 ) and drawers ( 3 ). The drawers ( 3 ) are installed inside the medicine box ( 2 ). The medicine box ( 2 ) is installed inside the medical case housing ( 1 ). Drawer driving devices are installed in the medical case housing ( 1 ). The drawer driving devices pass through the medicine box ( 2 ) and are detachably connected with the drawers ( 3 ), and the drawers ( 3 ) are driven to get out of or enter the medical case housing. The medicine box of the movable medical case is simple in structure, and reasonable in arrangement. There is no any electric connection between the medicine box and the medical case housing, the universality of the medical case housing is improved, and the automation control demands are met.

Description:
TECHNICAL FIELD 
       [0001]    The present invention relates to the field of medical device manufacturing technologies, and more particularly, to a movable medical case. 
       BACKGROUND 
       [0002]    A mobile medical computer workstation is mainly used for collecting, managing and sharing information data in the hospital, and helping medical staff nurse and treat patients. This technology is being applied extended and applied to other business areas gradually. Its function is to integrate a computer and external equipments thereof (such as a bar code scanner) and common inspection equipment (such as monitors for blood pressure, blood oxygen, temperature and heart rate) into a removable workbench equipped with a standby power supply. The medical staff push the workbench to a ward, and input the information checked into the computer at the bedside and store the information into a data base of the hospital through wireless networking, so as to achieve the objects of quickly and accurately collecting and integrating the data of the patients; according to the medical advice, a nurse can use the movable medical computer workstation to complete the job of distributing medicines to the patients. The medical case is placed in the top surface of the workbench, and can be entirely taken out. The medical staff take the medical case to dispense medicines for each patient at a dispensing station. Then the medical case is replaced into the workstation after the medicines are loaded. 
       SUMMARY 
       [0003]    Aiming at the defects of the prior art, the present invention provides a movable medical case having a medicine box which is simple in structure, and reasonable in arrangement, wherein there is no any electrical connection between the medicine box and the medical case, which increases the universality, and enables the medicine box to be replaced more conveniently and quickly. The movable medical case is applicable to the automation control demands of a mobile medical computer workstation. 
         [0004]    To fulfill the foregoing object, the present invention adopts the following technical solutions. 
         [0005]    A movable medical case includes a medical case housing, a medicine box and drawers, wherein: 
         [0000]    the drawers are installed inside the medicine box,
 
the medicine box is installed inside the medical case housing, and
 
drawer driving devices are installed in the medical case housing, the drawer driving devices pass through the medicine box and are detachably connected with the drawers, and drive the drawers to get out of or enter the medical case housing.
 
         [0006]    Further, the medicine box is detachably connected with the medical case housing. 
         [0007]    Further, a coupling mechanism is installed at the rear end of the drawer, the drawer driving device is installed on the side wall inside the medical case housing, including a motor, a synchronous belt, two synchronous belt wheels and a coupling rod, 
         [0000]    the motor is installed in the medical case housing to drive the synchronous belt wheels to rotate so as to drive the synchronous belt to move, and
 
the coupling rod is installed in the synchronous belt and is detachably matched with the coupling mechanism
 
         [0008]    Further, the drawer driving device also includes a guide rod and a coupling rod fixed mount, wherein the guide rod is installed above the synchronous belt and is fixed in the side wall of the medical case housing, the coupling rod fixed mount includes a sliding block sheathed on the guide rod and a coupling rod pedestal fixed in the bottom portion of the sliding block, the synchronous belt is clamped between the sliding block and the coupling rod fixed mount, and the coupling rod is fixed in the coupling rod pedestal. 
         [0009]    Further, the coupling mechanism includes a bracket, a hook plate and a return spring, wherein: 
         [0000]    the bracket is a plate with a U-shaped cross section, wherein an opening thereof faces towards the rearward of the drawer, and a bottom portion thereof is fixed in the rear end of the drawer,
 
the hook plate includes an articulation portion, a connecting portion and a wedged-head portion, the articulation portion is located at the lower portion of the hook plate and is articulated with the lower portion of the bracket,
 
the connecting portion and the wedged-head portion are located at the top portion of the hook plate, the connecting portion is located at one side close to the bracket, a holding groove is formed between the connecting portion and the wedged-head portion, and the holding groove is matched with the coupling rod, and
 
the return spring is installed at the top portion inside the bracket, the position of the return spring is corresponding to the position of the connecting portion, one end of the return spring is fixed in the bracket, and the other end is connected with the connecting portion.
 
         [0010]    Further, the portion of the holding groove close to the wedged-head portion forms an arc bent towards the inside of the holding groove. 
         [0011]    Further, the portion of the holding groove close to the wedged-head portion forms an arc bent towards the inside of the holding groove. 
         [0012]    The movable medical case according to the present invention may implement detachable connection between the medical case housing and the medicine box. When the medical case is installed in a workstation, the medicine box may be taken out to dispense medicines at a dispensing station, and then put back to the medical case. When the medical case is installed in the medical case housing, the drawers may be ejected automatically by controlling the drawer driving devices; when the medicine box needs to be taken out of the medical case housing or putted into the medical case housing, the automatic separation and connection between the drawers and the drawer driving devices can also be implemented. The medical case is simple in structure, and reasonable in arrangement, and is applicable to the automation control demands of the mobile medical computer workstation. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0013]      FIG. 1  is a schematic diagram of a movable medical case according to the invention; 
           [0014]      FIG. 2  is a schematic diagram of a medicine box according to the present invention; 
           [0015]      FIG. 3  is a schematic diagram of a medical case housing according to the present invention; 
           [0016]      FIG. 4  is a schematic diagram of a tray lock according to the present invention; 
           [0017]      FIG. 5  is schematic diagram of separating a tray and the tray lock according to the present invention; 
           [0018]      FIG. 6  is a schematic diagram of drawers according to the present invention; 
           [0019]      FIG. 7  is a schematic diagram of a coupling mechanism according to the present invention; 
           [0020]      FIG. 8  is a vertical view of the coupling mechanism according to the present invention; 
           [0021]      FIG. 9  is a schematic diagram of installing a drawer driving device on the medical case housing according to the present invention; 
           [0022]      FIG. 10  is a vertical view of installing the drawer driving device on the medical case housing according to the present invention; and 
           [0023]      FIG. 11  is a schematic diagram of matching between the drawer driving device and the coupling mechanism when the drawers are installed inside the medicine box and the medicine box is installed inside the medical case housing according to the present invention. 
       
    
    
     DETAILED DESCRIPTION 
       [0024]    The present invention will be further illustrated hereinafter with reference to the drawings. It should be appreciated that the embodiments are for explanation only, but not intended to restrict the scope of the present invention. Various equivalent modifications figured by those skilled in the art after reading the present invention shall all fall within the range defined by the claims of the present application appended. 
         [0025]    A movable medical case, as shown in  FIG. 1  to  FIG. 11 , includes a medical case housing  1 , a medicine box  2  and drawers  3 , wherein drawer driving devices are installed in the medical case housing, and the drawer driving devices pass through the medicine box  2 , are detachably connected with the drawers  3 , and drive the drawers  3  to get out of or enter the medical case housing  1 . 
         [0026]    The medicine box  2  is installed inside the medical case housing  1  and is detachably connected with the medical case housing medical case housing  1 . The medical case housing  1  is a square case body with an open front end, a tray lock is arranged in the bottom surface inside the medical case housing  1 , a tray  11  in slide fit with the two side walls  13  of the medical case housing  1  is arranged above the bottom surface of the medical case housing  1 , and the bottom surface of the tray  11  is provided with an elastic hook  111  matched with the tray lock. One end of the tray  11  close to the medical case housing  1  is provided with a baffle  112  vertical to the tray  11 , the medicine box  2  is placed in the tray  11  and is pushed into the medical case housing  1  together with the tray  11 , and the elastic hook  111  is matched with the tray lock to fix the medicine box  2  in the medical case housing  1 . When the medicine box  2  needs to be taken out, the elastic hook  111  is separated from the tray lock, then the tray  11  is ejected automatically, so that the medicine box  2  can be taken out. 
         [0027]    The tray lock includes a bottom plate  121 , a bracket  122 , a connecting rod  123 , a paddle  124 , a push pedal  125  and a spring  126 . The bottom plate  121  is a square plate sheet fixed in a middle position at the rear end inside the medical case housing  1 , and the front end of the bottom plate  121  is provided with a latch plate arranged vertically to the bottom plate  121 . The bracket  122  is an inverse U-sheet, and the two ends of the bracket are fixedly connected with the bottom plate  121 . The push pedal  125  is installed in the top surface of the bottom plate  121 , and is in slide fit with the bottom plate  121 , the front end of the push pedal  125  is provided with a bending portion which upwardly extends along a direction vertical to the push pedal  125 , and the front end of the bending portion is connected with the latch plate of the bottom plate  121  through a spring  126 . A hole is arranged in the middle position of the bending portion, and the paddle  124  passes through the hole. The paddle  124  is zigzag, wherein a relatively long portion of the paddle  124  is arranged in the lower side while a relatively short portion thereof is arranged in the top side, the relatively long portion passes through the hole in the push pedal  125  to the latch plate, and the bottom portion of the paddle  124  is articulated with the bottom plate  121 . The relatively short portion is fixedly connected with the bottom end of the connecting rod  123  above thereof which passes through the bracket  122 . The top end of the connecting rod  123  passing through a sleeve fixedly installed in the top end of the bracket  122  is connected with an electromagnetic device, and the bottom end of the connecting rod is fixedly connected with the paddle  124 . 
         [0028]    The middle position at the rear end of the tray  11  is provided with a square hole, the rear end of the elastic hook  111  in the tray  11  is fixed at the rear end of the square hole in the tray  11 , and the front end of the tray  11  leans towards the lower-front under a nature state. 
         [0029]    When the tray  11  is pushed to move towards the inside of the medical case housing  1 , the rear end of the tray  11  pushes the bending portion of the push pedal  125  to move backwards, and the front end of the elastic hook  111  is clamped inside the latch plate, so that the tray  11  is locked tightly under the effect of the restoring force of the spring  126 . When the tray  11  needs to be ejected, the electromagnetic device drives the connecting rod  123  to move downwards, so as to drive the relatively long portion of the paddle  124  to upwarp, and push the elastic hook  111  to separate from the latch plate, so that the tray  11  is ejected under the effect of the push pedal  125 . 
         [0030]    The drawers are installed inside the medicine box  2 , and the number of the drawers may be specifically set according to the service conditions of the medical case housing  1 , so as to adjust the structure of the medicine box  2 . In the embodiment, eight drawers  3  are arranged. The medicine box  2  is set as a square box body structure with an open front end, the eight drawers  3  are divided into four layers, and are symmetrically installed at the two sides of the inside of the medicine box  2 . 
         [0031]    The transverse middle of the medicine box  2  is provided with a vertical baffle  21 , the two sides of the vertical baffle  21  are provided with four rows of roller wheels  211  from the top to the bottom, each row of roller wheels  211  are arranged along the front and back directions of the medicine box  2 , and four rows of roller wheels  211  are also arranged on the positions of the two side walls  22  of the medicine box  2  corresponding to the roller wheels  211  in the vertical baffle  21  respectively. Both the two sides of the drawer  3  are provided with a runner  31 ; during installation, the two runners  31  are matched with the roller wheels  211  in the side walls  22  and the vertical baffle  21  of the medicine box  2  respectively, to guide and support the drawer  3  during the process of entering and getting out of the medicine box  2 . The vertical middle position of the medicine box  2  is provided with a transverse baffle  23 . 
         [0032]    A through groove  221  extending along the front and back directions of the medicine box  2  is arranged above the two side walls  22  of the medicine box  2  and each row of roller wheels  211 , wherein the through groove  221  extends till the back wall  23  of the medicine box  2  to ensure that the drawer driving device will not be blocked by the back wall  23  of the medicine box  2  when the drawer driving device passes through and is moved out from the through groove  221 . 
         [0033]    The drawer  3  includes a storage box  32 , a cover plate  33  at the front end of the storage box  32  and detachably connected with the storage box  32 , the runners  31  at the two sides of the storage box  32 , and a coupling mechanism  34  installed at the top portion of the rear end of the runner close to one side of the side wall  13  of the medicine box  2 . 
         [0034]    The position of the coupling mechanisms  34  is corresponding to the position of the through groove  221  in the storage box  32 . The coupling mechanism  34  includes a bracket  341 , a hook plate  342  and a return spring  343 . The bracket  341  is a plate with a U-shaped cross section, wherein an opening thereof faces towards the rearward of the drawer  3 , and a bottom portion thereof is fixed in the runner  31  at the rear end of the drawer  3  through a plate sheet. The hook plate  342  includes an articulation portion  3421 , a connecting block  3422  and a wedged-head portion  3423 , the articulation portion  3421  is located in the lower portion of the hook plate  342 , stretches into the bracket  341  and is articulated with the lower portion of the bracket  341 . The connecting block  3422  and the wedged-head portion  3423  are located in the top portion of the hook plate  342 , the connecting block  3422  is located at one side close to the bracket  341 , a holding groove  3424  is formed between the connecting block  3422  and the wedged-head portion  3423 , and the holding groove  3424  is matched with a connecting rod  46  of the drawer driving device. The return spring  343  is installed at the top portion inside the bracket  341 , the position of the return spring is corresponding to the position of the connecting block  3422 , one end of the return spring is fixed in the bracket  341 , and the other end is connected with the connecting block  3422 . The portion of the holding groove  3424  close to the wedged-head portion  3423  forms an arc  34   a  bent towards the inside of the holding groove  3424 , to ensure that the coupling rod  46  will not be disengaged from the holding groove  3424  when the coupling rod is pushing the wedged-head portion  3423  in a certain range of an acting force. The transition between the portion of the holding groove  3424  close to the wedged-head portion  3423  and the top surface of the wedged-head portion  3423  is arc transition  34   b , to ensure that the coupling rod  46  can be smoothly disengaged from the holding groove  3424  under a certain acting force. 
         [0035]    The drawer driving devices are installed in the two side walls  13  of the medical case housing  1 , and the number of the drawer driving devices is corresponding to the number of the drawers  3 . In the embodiment, eight drawer driving devices are arranged, divided into four layers, and installed in the side walls  13  of the medical case housing  1 . Each drawer driving device includes a motor  41 , a motor support  42 , two synchronous belt wheels, a synchronous belt wheel installing groove  43 , a synchronous belt  44 , a guide rod  45 , a coupling rod  46  and a coupling rod fixed mount  47 . 
         [0036]    The motor support  42  is a U-shaped plate, and an opening of the motor support  42  faces towards the side wall  13  of the medical case housing  1  and is installed at the rear end of the side wall  13  of the medical case housing  1 . A drive rod of the motor  41  passes through the motor support  42  along a direction vertical to the side wall  13  of the medical case housing  1 , and is connected with the synchronous belt wheels  49  in the motor support  42 , and a housing of the motor  41  is fixedly connected with the motor support  42 . 
         [0037]    The synchronous belt wheel installing groove  43  is a U-shaped plate, an inserting rod  431  is arranged along a direction vertical to the bending portion thereof, and groove openings  432  are arranged on the two side walls thereof along a direction vertical to the opening thereof. A vertical inserting plate  14  is arranged at the front end of the medical case housing  1  close to the opening position, the synchronous belt wheel installing groove  43  is arranged inside the medical case housing  1 , and the groove opening  432  thereof is upward, and the inserting rod  431  is vertically inserted into the inserting plate  14  for fixation. The synchronous belt wheels  49  are installed in the synchronous belt wheel installing groove  43 , and the two ends of a neutral axis thereof are arranged in the groove openings  432  in the two side walls  13  of the synchronous belt wheel installing groove  43  respectively. The synchronous belt  44  is installed in the two synchronous belt wheels  49 . 
         [0038]    The vertical inserting plates  14  are installed at the rear end of the side wall  13  of the medical case housing  1  and behind the installation position of the motor  41 . The guide rod  45  is horizontally arranged above the synchronous belt  44 , and the two ends thereof are inserted into the inserting plates  14  at the front end and the rear end of the side wall  13  respectively. 
         [0039]    The coupling rod fixed mount  47  includes a sliding block  471  and a coupling rod pedestal  472 . The sliding block  471  is sheathed on the guide rod  45  and is in slide fit with the guide rod  45 . A horizontally arranged installing plate  473  is installed in the bottom portion of the sliding block  471 , the coupling rod pedestal  472  is arranged below the installing plate  473  and is connected through bolts, and the synchronous belt  44  is arranged between the installing plate  473  and the coupling rod pedestal  472  and is clamped. The coupling rod  46  is vertically fixed in the coupling rod pedestal  472  along a direction vertical to the side wall  13  of the medical case housing  1 , and the position of the coupling rod  46  is corresponding to the through groove  221  in the medicine box  2  and the coupling mechanism  34  in the drawer  3 . 
         [0040]    The motor  41  drives the synchronous belt wheels  49 , the synchronous belt  44  and the coupling rod fixed mount  47  to move, so as to drive the coupling rod  46 , the coupling mechanism  34  and the drawers  3  to move. The length of the synchronous belt  44  between the two synchronous belt wheels  49  is greater than the length of the drawer  3 . 
         [0041]    A manner of connecting the coupling mechanism  34  in the drawer  3  with the coupling rod  46  of the drawer driving device is as follows: when the medicine box  2  is installed inside the medical case housing  1 , and the drawers  3  are located inside the medicine box  2  and under a closed state, the coupling rod  46  moves towards the position of the drawers  3  under the drive of the motor  41  to extrude the top surface of the wedged-head portion  3423 , so as to drive the installing plate  473  to extrude the return spring  343  until the coupling rod  46  enters the inside of the holding groove  3424 , and the hook plate  342  is rebounded under the effect of the return spring  343 , thus completing the match between the coupling mechanism  34  and the coupling rod  46 . 
         [0042]    When the medicine box  2  is placed in the medical case housing  1  for use, the operation of the motor  41  is controlled to ensure that the drawer  3  is opened and closed in a certain range and the coupling rod  46  is matched with the coupling mechanism  34  all the time. 
         [0043]    A method of separation between the coupling mechanism  34  and the coupling rod  46  is as follows: when the medicine box  2  is installed inside the medical case housing  1 , the drawers  3  are arranged inside the medicine box  2  and under a closed state, and the coupling rod  46  is matched with the coupling mechanism  34 , the coupling rod  46  moves opposite to the position of the drawers  3  until being separated from the coupling mechanism  34 . After separation, the return spring  343  drives the hook plate  342  to rebound. 
         [0044]    After the coupling rod  46  is separated from the coupling mechanism  34 , the tray lock is opened, and the tray  11  is pulled to the outside of the medical case housing  1 , so that the medicine box  2  can be taken out. 
         [0045]    The movable medical case according to the present invention may implement detachable connection between the medical case housing and the medicine box. When the medical case is installed in a workstation, the medicine box may be taken out to dispense medicines at a dispensing station, and then put back to the medical case. When the medical case is installed in the medical case housing, the drawers may be ejected automatically by controlling the drawer driving devices; when the medicine box needs to be taken out of the medical case housing or putted into the medical case housing, the automatic separation and connection between the drawers and the drawer driving devices can also be implemented. The medical case is simple in structure, and reasonable in arrangement, and is applicable to the automation control demands of a mobile medical computer workstation.