Rear shell assembly of medical equipment and medical equipment

Abstract

The invention discloses a rear shell assembly of medical equipment and the medical equipment. The rear shell assembly comprises a rear shell, wherein a mounting cavity is formed in the rear shell, and one side face of the rear shell is open; the rear shell comprises a top side wall, a bottom side wall, a first side wall and a second side wall which define the peripheral side walls of the mounting cavity, the top side wall and the bottom side wall are oppositely arranged, and the first side wall and the second side wall are oppositely arranged; a main support opposite to the first side wall is fixed in the mounting cavity, a power panel and a printer module are fixed to the main support, and the power panel is obliquely arranged relative to the first side wall. The mode that the power panel is obliquely arranged relative to the first side wall of the rear shell is beneficial to shortening the space occupation of the power panel in the height direction of the mounting cavity, shortening the height of the rear shell and realizing the compact design of the medical equipment; besides, the power panel is obliquely arranged, so that the power panel and the printer module can be far away as far as possible in the height direction under the condition that the height of the rear shell is not increased, and heat dissipation of the power panel and the printer module is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a rear shell component of medical equipment and the medical equipment. Background Art

[0002] A monitor is a medical device that can monitor a patient's physiological parameters in real time and compare them with known set values.

[0003] The monitor usually includes a front shell component and a rear shell component that are spliced ​​together. The front shell component includes a front shell and a display screen and input components installed on the front shell. The rear shell component includes a rear shell and a mainboard, interface board, battery box, power board, printer module, host plug-in box and other components installed on the rear shell. The rear shell as a whole is a box structure with an installation cavity inside and an opening on one side. The front shell is connected to the side of the rear shell with an opening and blocks the opening of the rear shell.

[0004] In the prior art, the power module is mostly installed on the side wall of the rear shell in a manner perpendicular to the bottom side wall of the rear shell, roughly parallel to the right side wall of the rear shell, and located below the power module, and a printer module is generally placed. However, this placement of the power module will cause the power module to occupy a relatively large space in the height direction between the top side wall of the rear shell and the bottom side wall of the rear shell, which is not conducive to the compact design of the internal structure of the monitor. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the power module in the monitor in the prior art occupies a relatively large space in the height direction, which is not conducive to the compact design of the internal structure of the monitor, thereby providing a rear shell component of a medical device and a medical device.

[0006] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0007] A rear shell assembly of a medical device includes a rear shell with an installation cavity inside and an opening on one side; the rear shell includes a first side wall located on one side of the installation cavity, a main bracket arranged opposite to the first side wall is fixed in the installation cavity, a power board is fixed on the main bracket, and the power board is arranged obliquely relative to the first side wall.

[0008] Furthermore, the inclination angle between the power board and the first side wall is ɑ , 15°≤ɑ≤45°.

[0009] Furthermore, the power board is fixed to the main bracket through a power board bracket; the power board bracket includes a mounting portion, a supporting portion and a connecting portion, the power board is fixed to the mounting portion, the connecting portion is fixedly connected to the main bracket, the supporting portion is integrally connected between the mounting portion and the connecting portion, and the mounting portion is inclined relative to the main bracket.

[0010] Furthermore, a through hole is provided on the main bracket, and a fitting portion passing through the through hole is provided at one end of the mounting portion away from the supporting portion, and the fitting portion fits with a side of the main bracket facing away from the power board.

[0011] Furthermore, the fitting portion is fixed to the main support via a fastener.

[0012] Furthermore, the main bracket includes a bracket mounting plate arranged opposite to the first side wall of the rear shell and a bracket side plate connected to the bracket mounting plate; the power board bracket is fixed on the bracket mounting plate, and the components integrated on the power board are located on the side of the power board facing away from the bracket mounting plate; the bracket side plate blocks the side of the power board close to the opening of the rear shell.

[0013] Furthermore, an isolation plate is provided on the main support, the power supply board is fixed on the main support above the isolation plate, and a printer module and a printer main support are fixed on the main support below the isolation plate.

[0014] Furthermore, the rear shell also includes a top side wall, a bottom side wall and a second side wall arranged corresponding to the surroundings of the installation cavity, the top side wall and the bottom side wall are arranged opposite to each other, and the first side wall and the second side wall are arranged opposite to each other; the distance between the first side wall and the second side wall of the rear shell is the long side L of the installation cavity, and the distance between the top side wall and the bottom side wall of the rear shell is the high side H of the installation cavity; a battery box is also provided in the installation cavity of the rear shell, and the battery box is in a rectangular shape, and the battery box includes a long side a, a wide side b and a high side c, a>b≥c; the length direction of the long side a is the same as the length direction of the high side H, and the length direction of the high side c is the same as the length direction of the long side L.

[0015] Furthermore, a base plate is fixedly installed in the mounting cavity of the rear shell, and the battery box is fixed on the base plate; the surface formed by the long side a and the wide side b of the battery box is the ab surface of the battery box, and the surface formed by the long side a and the high side c of the battery box is the ac surface of the battery box; the ab surface of the battery box and the ac surface of the battery box are both perpendicular to the base plate.

[0016] Furthermore, a mainboard fixing bracket is provided between the ab surface of the battery box and the main bracket and is located in the installation cavity. A mainboard is fixed to the side of the mainboard fixing bracket facing away from the ab surface of the battery box. Both the mainboard and the main bracket are parallel to the ab surface of the battery box.

[0017] Furthermore, the main board is electrically connected to an interface board arranged in parallel with the main board, and the interface board is located between an ac surface of the battery box close to the rear shell and the rear shell.

[0018] Furthermore, a host plug-in box is provided between the ab surface of the battery box and the second side wall and is located in the installation cavity.

[0019] A medical device comprises a front shell component and a rear shell component which are connected to each other, wherein the rear shell component is the rear shell component of the medical device mentioned above.

[0020] The technical solution of the present invention has the following advantages:

[0021] 1. In the rear shell assembly of the medical device provided by the present invention, the power board is tilted relative to the first side wall of the rear shell, which is beneficial to shortening the space occupied by the power board in the height direction of the installation cavity, shortening the height of the rear shell, and realizing a compact design of the medical device.

[0022] 2. In the rear shell assembly of the medical device provided by the present invention, the power board is installed on the main bracket through the power board bracket, which facilitates the inclined installation of the power board.

[0023] 3. The rear shell assembly of the medical device provided by the present invention is provided with a through hole on the main bracket, and the fitting portion of the power board bracket passes through the through hole and fits with the side of the main bracket facing away from the power board, which is conducive to the installation portion and the power board thereon to stably maintain an inclined state.

[0024] 4. In the rear shell assembly of the medical device provided by the present invention, the bracket mounting plate of the main bracket and the first side wall of the rear shell are relatively arranged in such a manner that the components on the power board mounted on the bracket mounting plate face away from the main board in the rear shell assembly, which is beneficial to reducing interference between the components on the power board and the main board.

[0025] 5. The rear shell assembly of the medical device provided by the present invention, the printer module and the power board are fixed on the same main bracket and separated by the isolation plate. Compared with the prior art method in which the printer module and the power board are respectively fixed on the first side wall of the rear shell by brackets, the printer module and the power board are more convenient to disassemble and assemble, and the isolation plate can separate the printer module and the power board to reduce mutual interference between the two. In addition, since the power board is placed obliquely, the power board and the printer module can be as far away as possible in the height direction without increasing the height of the rear shell, thereby ensuring the heat dissipation of the two.

[0026] 6. In the back shell assembly of the medical device provided by the present invention, the length direction of the long side a of the battery box is the same as the length direction of the high side H of the installation cavity, and the length direction of the high side c of the battery box is the same as the length direction of the long side L of the installation cavity. The battery box is placed vertically in the installation cavity of the back shell, which can save the size of the long side L of the installation cavity, and then reduce the size of the back shell in the direction of the long side L of the installation cavity, thereby realizing a compact design of the medical device, which is beneficial to improving the utilization rate of the internal space of the medical device.

[0027] 7. In the back shell assembly of the medical device provided by the present invention, the main board is fixed to one side of the ab surface of the battery box by a main board fixing bracket, and the interface board is located between an ac surface of the battery box close to the back shell and the back shell. Compared with the method in the prior art where both the main board and the interface board are arranged on one side of the ab surface of the battery box, the space between the ac surface of the battery box and the back shell can be fully utilized, which is beneficial to shortening the size of the long side L of the installation cavity and realizing the compact design of the medical device.

[0028] 8. In the rear shell assembly of the medical device provided by the present invention, the host plug-in box is located on one side of one ab surface of the battery box, and the main board, the power board and the printing module are all located on the other ab side of the battery box. Such an arrangement allows the battery box to be located in the middle of the rear shell assembly and the entire medical device. Since the battery box is the component with the largest deadweight in the medical device, the battery box being located in the middle of the medical device can well balance the center of gravity of the rear shell assembly and the entire medical device, thereby making the medical device more stably placed.

[0029] 9. The medical device provided by the present invention adopts the rear shell component of the above-mentioned medical device and has all the advantages of the above-mentioned rear shell component. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A schematic diagram of the three-dimensional structure of a rear shell assembly of a monitor provided in an embodiment of the present invention;

[0032] Figure 2 A front view of a rear housing assembly of a monitor provided by an embodiment of the present invention;

[0033] Figure 3 It is a schematic diagram of the structure of a power module, a printer module and a wedge-shaped adapter on a main bracket in an embodiment of the present invention;

[0034] Figure 4 Schematic diagram of the three-dimensional structure of the main support, power module and printer module in the embodiment of the present invention Figure 1 ;

[0035] Figure 5 Schematic diagram of the three-dimensional structure of the main support, power module and printer module in the embodiment of the present invention Figure 2 ;

[0036] Figure 6 Schematic diagram of the exploded structure of the main support, power module and printer module in an embodiment of the present invention;

[0037] Figure 7 A side view of a main support, a power module and a printer module in an embodiment of the present invention;

[0038] Figure 8 It is a schematic diagram of the exploded structure of the battery box, the mainboard fixing bracket, the mainboard, and the interface board in the embodiment of the present invention;

[0039] Fig. 9 It is a schematic diagram of the overall structure of the battery box, mainboard fixing bracket, mainboard, and interface board in an embodiment of the present invention.

[0040] Description of reference numerals: 100, rear shell; 101, top side wall; 102, bottom side wall; 103, first side wall; 104, second side wall; 105, mounting cavity; 106, rear shell connecting surface; 200, bottom plate; 300, battery box; 310, battery interface board; 320, battery cover; 400, mainboard fixing bracket; 410, mainboard; 420, interface board; 510, main bracket; 511, bracket mounting plate; 511a, through hole; 512, bracket side panel; 513, isolation plate; 514, ear plate; 520, power module; 521, power board; 522, components; 530, power board bracket; 531, installation part; 532, support part; 533, connection part; 534, fitting part; 540, printer module; 550, printer fixing bracket; 600, host plug-in box; 700, wedge adapter; 800, Bluetooth module; 900, WIFI module. DETAILED DESCRIPTION

[0041] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In this application, the medical device is specifically a desktop medical device such as a monitor, an electrocardiograph, and an analyzer, in which components such as a battery box, a mainboard, and a power module are arranged in the same installation cavity of the housing. The following takes a monitor as an example to introduce in detail the medical device for which protection is requested in this application.

[0045] A monitor is a medical device that can monitor various physiological parameters of a patient in real time and compare them with known set values. A monitor usually includes a front shell component and a rear shell component that are spliced ​​together. The front shell component includes a front shell and a display screen and an input component mounted on the front shell; the rear shell component includes a rear shell, which is a box structure with an installation cavity inside and an opening on one side. The front shell is connected to the side of the rear shell with an opening and blocks the opening of the rear shell. There is a fitting gap between the front shell and the rear shell. This application mainly makes improvements to the rear shell component of the monitor. The specific structure of the rear shell component of the monitor is described in detail below.

[0046] like Figure 1As shown in FIG. 2, the rear shell assembly includes a rear shell 100 and a bottom plate 200 installed in the installation cavity 105 of the rear shell 100, a mainboard fixing bracket 400, a mainboard 410, an interface board 420, a battery box 300, a power module 520, a printer module 540, a host plug-in box 600, a Bluetooth module 800, and a WIFI module 900. The rear shell 100 includes a bottom wall arranged opposite to the opening, and a top side wall 101, a bottom side wall 102, a first side wall 103, and a second side wall 104 connected to the bottom wall and surrounding the side walls of the installation cavity 105. The top side wall 101 and the bottom side wall 102 are arranged opposite to each other, and the first side wall 103 and the second side wall 104 are arranged opposite to each other; the distance between the first side wall 103 and the second side wall 104 is the long side L of the installation cavity 105, and the distance between the top side wall 101 and the bottom side wall 102 is the high side H of the installation cavity 105, L≥H.

[0047] The bottom plate 200 is fixed on the bottom side wall 102 of the rear shell 100 and is parallel to the bottom side wall 102 of the rear shell 100, and the WIFI module 900 is fixed on the top side wall 101 of the rear shell 100. The power module 520 is installed above a main bracket 510 through a power board bracket 530, and the printer module 540 is installed below the same main bracket 510 through a printer fixing bracket. The main bracket 510 can be an integrated bracket structure or a combined bracket structure assembled from two or more small brackets. When the main bracket 510 is a combined bracket structure, two or more small brackets are fixed together by screws, and the power module 520 and the printer module 540 are respectively fixed on a small bracket. The main bracket 510 is located on the side of the installation cavity 105 close to the first side wall 103, the host plug-in box 600 is located on the side of the installation cavity 105 close to the second side wall 104, and the Bluetooth module 800 is fixed on the host plug-in box 600. The battery box 300 is fixed on the bottom plate 200 and is located between the host plug-in box 600 and the printer module 540. The mainboard fixing bracket 400 is fixed on the side of the battery box 300 facing away from the host plug-in box 600. The mainboard 410 is fixed on the side of the mainboard fixing bracket 400 facing away from the battery box 300. The mainboard fixing bracket 400 and the mainboard 410 are both perpendicular to the bottom plate 200, and the mainboard fixing bracket 400, the mainboard 410 and the main bracket 510 are parallel to the first side wall 103 and the second side wall 104 of the rear shell 100. Such an arrangement allows the battery box 300 to be located in the middle of the rear shell assembly and the entire monitor. Since the battery box 300 is the component with the largest deadweight in the monitor, the battery box 300 is located in the middle of the monitor, which can well balance the center of gravity of the rear shell assembly and the entire monitor, making the monitor more stable.

[0048] See also Figure 2 and Figure 3, the rear shell assembly also includes a main bracket 510 and a wedge-shaped adapter 700. The main bracket 510 includes a bracket mounting plate 511 and a bracket side plate 512; the bracket mounting plate 511 extends into the mounting cavity 105 and is arranged opposite to and parallel to the first side wall 103 of the rear shell 100, and the power module 520 and the printer module 540 are both installed on the bracket mounting plate 511; the bracket side plate 512 is perpendicular to the bracket mounting plate 511, and the bracket side plate 512 is integrally connected to the side of the bracket mounting plate 511 facing away from the bottom wall of the rear shell 100, and the bracket side plate 512 is arranged opposite to and parallel to the bottom wall of the rear shell 100. The wedge-shaped adapter 700 is fixedly connected to the side of the bracket side plate 512 facing away from the rear shell 100 and fixedly connected to the rear shell connection surface 106 of the rear shell 100 facing the front shell (not shown). The wedge-shaped adapter 700 is located in the matching gap between the front shell and the rear shell 100, and the side of the wedge-shaped adapter 700 facing away from the rear shell 100 abuts against the front shell. The wedge-shaped adapter 700 occupies the matching gap between the front shell and the rear shell 100, and there is no gap between the front shell and the rear shell 100 for the main bracket 510 to shake, thereby improving the stability of the main bracket 510 and the power module 520 and the printer module 540 installed thereon. In addition, the power module 520 and the printer module 540 can be disassembled and assembled with the main bracket 510, and the power module 520 and the printer module 540 are more convenient to disassemble and assemble.

[0049] See also Figure 3 As shown in FIG. 6 , the bracket mounting plate 511 is provided with an ear plate 514 parallel to the bottom wall of the rear housing 100, the ear plate 514 is perpendicular to the bracket mounting plate 511, and the ear plate 514 is fixed to the bottom wall by a third fastener. The third fastener is specifically a screw. The cooperation between the ear plate 514 and the wedge-shaped adapter 700 can realize the fixing of both ends of the main bracket 510, which is conducive to improving the stability of the installation structure of the main bracket 510.

[0050] See also Figure 1 and Figure 3 The power board bracket 530 is located as a whole between the bracket mounting plate 511 and the first side wall 103 of the rear shell 100. The power module 520 is arranged obliquely relative to the first side wall 103 of the rear shell 100. Such an arrangement is conducive to shortening the space between the top side wall 101 and the bottom side wall 102 of the rear shell 100 in the height direction, shortening the overall height of the rear shell 100, and realizing a compact design of the monitor. In addition, since the power module 520 is placed obliquely, the power module 520 and the printer module 540 can be as far away from each other in the height direction as possible without increasing the height of the installation cavity 105, thereby ensuring the heat dissipation of the two.

[0051] See also Figure 4-6, an isolation plate 513 is provided in the middle of the bracket mounting plate 511, the power module 520 is mounted on the bracket mounting plate 511 above the isolation plate 513 through the power board bracket 530; the printer module 540 is mounted on the bracket mounting plate 511 below the isolation plate 513 through the printer bracket; the isolation plate 513 is used to separate the power module 520 and the printer module 540. Compared with the prior art method in which the printer module 540 and the power module 520 are respectively fixed to the first side wall 103 of the rear shell 100 through the bracket, the printer module 540 and the power module 520 are more convenient to disassemble and assemble, and the isolation plate 513 can separate the printer module 540 and the power module 520 to reduce mutual interference between the two.

[0052] See also Figure 4 -7, the power board bracket 530 includes a mounting portion 531, a supporting portion 532 and a connecting portion 533 of an integrated structure. The power module 520 includes a power board 521 and components 522 integrated on the power board 521, and the components 522 are located on the side of the power board 521 facing away from the bracket mounting plate 511, which is beneficial to reduce the interference between the power board 521 and the components on the main board 410. The power board 521 is fixed on the mounting portion 531, and the connecting portion 533 is fixedly connected to the bracket mounting plate 511. The connecting portion 533 is parallel to the bracket mounting plate 511, and the supporting portion 532 is integrally connected between the mounting portion 531 and the connecting portion 533. The supporting portion 532 is perpendicular to the connecting portion 533, and the mounting portion 531 is inclined relative to the connecting portion 533 and the bracket mounting plate 511; this facilitates the inclined installation of the power board 521 and the power module 520. Specifically, the inclination angle between the power board 521 and the first side wall 103 is ɑ , 15°≤ɑ≤45°.

[0053] See also Figure 4 -7, a through hole 511a is provided on the bracket mounting plate 511, and a fitting portion 534 passing through the through hole 511a is provided at one end of the mounting portion 531 away from the supporting portion 532. The fitting portion 534 fits with the side of the bracket mounting plate 511 facing away from the power board 521 and is fixed to the bracket mounting plate 511 by a plurality of screws. Such a configuration is conducive to the power board bracket 530 and the power module 520 to stably maintain an inclined state.

[0054] See also Figure 2 and Figure 8The battery box 300 is in a rectangular shape, and includes a long side a, a wide side b and a high side c, where a>b≥c; the length direction of the long side a of the battery box 300 is the same as the length direction of the high side H of the mounting cavity 105 of the rear shell 100, and the length direction of the high side c of the battery box 300 is the same as the length direction of the long side L of the mounting cavity 105 of the rear shell 100. With such a configuration, the battery box 300 is placed vertically in the mounting cavity 105 of the rear shell 100, which can save the size of the long side L of the rear shell 100, thereby reducing the size of the monitor on the long side L of the rear shell 100, realizing a compact design of the monitor, and is conducive to improving the utilization rate of the internal space of the monitor.

[0055] Specifically, the surface formed by the long side a and the wide side b of the battery box 300 is the ab surface of the battery box 300, the surface formed by the wide side b and the high side c of the battery box 300 is the bc surface of the battery box 300, and the surface formed by the long side a and the high side c of the battery box 300 is the ac surface of the battery box 300; the ab surface of the battery box 300 and the ac surface of the battery box 300 are both perpendicular to the bottom plate 200. The mainboard fixing bracket 400 is located between the ab surface of the battery box 300 and the main bracket 510, and the mainboard 410 is fixed to the side of the mainboard fixing bracket 400 facing away from the ab surface of the battery box 300, and the mainboard 410 and the mainboard fixing bracket 400 are parallel to the ab surface of the battery box 300, and the mainboard 410, the mainboard fixing bracket 400 and the main bracket 510 are all perpendicular to the bottom plate 200.

[0056] See also Figure 8 and Fig. 9 A battery cover plate 320 is provided on the ab surface of the battery box 300 facing away from the main board 410, and a battery interface plate 310 is provided on the bc surface of the battery box 300 facing away from the bottom plate 200. The interface plate 420 is electrically connected to the main board 410 and arranged in parallel with the main board 410. The interface plate 420 is located between an ac surface of the battery box 300 close to the bottom wall of the rear shell 100 and the bottom wall of the rear shell 100. Compared with the prior art in which both the main board 410 and the interface plate 420 are arranged on one side of the ab surface of the battery box 300, such an arrangement can make full use of the space between the ac surface of the battery box 300 and the rear shell 100, which is conducive to shortening the size of the long side L of the rear shell 100 and realizing a compact design of the monitor.

[0057] In summary, the rear shell assembly of the medical device and the medical device provided by the embodiment of the present invention, the way in which the power board 521 of the power module 520 is tilted relative to the first side wall 103 of the rear shell 100 is conducive to shortening the space between the top side wall 101 and the bottom side wall 102 of the rear shell 100 in the height direction, shortening the height of the rear shell 100, and realizing a compact design of the medical device. In addition, since the power module 520 is tilted, the power module 520 and the printer module 540 can be as far away from each other as possible in the height direction without increasing the height of the rear shell 100, thereby ensuring the heat dissipation of the two.

[0058] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A rear housing assembly of a medical device, characterized in that: The invention comprises a rear shell (100) having an installation cavity (105) inside and an opening on one side; the rear shell (100) comprises a first side wall (103) located on one side of the installation cavity (105); a main bracket (510) arranged opposite to the first side wall (103) is fixed in the installation cavity (105); a power board (521) is fixed on the main bracket (510); and the power board (521) is arranged obliquely relative to the first side wall (103).

2. The rear housing assembly of the medical device according to claim 1, characterized in that: The inclination angle between the power board (521) and the first side wall (103) is ɑ , 15°≤ɑ≤45°.

3. The rear housing assembly of the medical device according to claim 1, characterized in that: The power board (521) is fixed to the main bracket (510) via a power board bracket (530); the power board bracket (530) comprises a mounting portion (531), a supporting portion (532) and a connecting portion (533); the power board (521) is fixed to the mounting portion (531); the connecting portion (533) is fixedly connected to the main bracket (510); the supporting portion (532) is integrally connected between the mounting portion (531) and the connecting portion (533); and the mounting portion (531) is arranged to be inclined relative to the main bracket (510).

4. The rear housing assembly of the medical device according to claim 3, characterized in that: The main bracket (510) is provided with a through hole (511a), and an end of the mounting portion (531) away from the supporting portion (532) is provided with a fitting portion (534) passing through the through hole (511a), and the fitting portion (534) fits with a side of the main bracket (510) facing away from the power board (521).

5. The rear housing assembly of the medical device according to claim 4, characterized in that: The fitting portion (534) is fixed to the main support (510) via a fastener.

6. The rear housing assembly of the medical device according to claim 3, characterized in that: The main bracket (510) comprises a bracket mounting plate (511) arranged opposite to the first side wall (103) of the rear shell (100) and a bracket side plate (512) connected to the bracket mounting plate (511); the power board bracket (530) is fixed on the bracket mounting plate (511), and the components (522) integrated on the power board (521) are located on the side of the power board (521) facing away from the bracket mounting plate (511); the bracket side plate (512) blocks the side of the power board (521) close to the opening of the rear shell (100).

7. The rear housing assembly of the medical device according to claim 1, characterized in that: An isolation plate (513) is provided on the main support (510), the power supply board (521) is fixed on the main support (510) above the isolation plate (513), and a printer module (540) is fixed on the main support (510) below the isolation plate (513).

8. The rear housing assembly of the medical device according to claim 1, characterized in that: The rear shell (100) further comprises a top side wall (101), a bottom side wall (102) and a second side wall (104) arranged corresponding to the periphery of the installation cavity (105); the top side wall (101) and the bottom side wall (102) are arranged opposite to each other, and the first side wall (103) and the second side wall (104) are arranged opposite to each other; the distance between the first side wall (103) and the second side wall (104) of the rear shell (100) is equal to the long side L of the installation cavity (105); 00) is equal to the height H of the mounting cavity (105); a battery box (300) is also provided in the mounting cavity (105) of the rear shell (100); the battery box (300) is in a rectangular shape; the battery box (300) comprises a long side a, a wide side b and a high side c, a>b≥c; the length direction of the long side a is the same as the length direction of the high side H, and the length direction of the high side c is the same as the length direction of the long side L.

9. The rear housing assembly of the medical device according to claim 8, characterized in that: A base plate (200) is fixedly mounted in the mounting cavity (105) of the rear shell (100), and the battery box (300) is fixed on the base plate (200); the surface formed by the long side a and the wide side b of the battery box (300) is the ab surface of the battery box (300), and the surface formed by the long side a and the high side c of the battery box (300) is the ac surface of the battery box (300); the ab surface of the battery box (300) and the ac surface of the battery box (300) are both perpendicular to the base plate (200).

10. The rear housing assembly of the medical device according to claim 9, characterized in that: A mainboard fixing bracket (400) is also provided between the ab surface of the battery box (300) and the main bracket (510) and is located in the installation cavity (105); a mainboard (410) is fixed to the side of the mainboard fixing bracket (400) facing away from the ab surface of the battery box (300); and both the mainboard (410) and the main bracket (510) are parallel to the ab surface of the battery box (300).

11. The rear housing assembly of the medical device according to claim 9, characterized in that: The main board (410) is electrically connected to an interface board (420) arranged in parallel with the main board (410), and the interface board (420) is located between an ac surface of the battery box (300) close to the rear shell (100) and the rear shell (100).

12. The rear housing assembly of the medical device according to claim 9, characterized in that: A host plug-in box (600) located in the installation cavity (105) is also provided between the ab surface of the battery box (300) and the second side wall (104).

13. A medical device, characterized in that: It comprises a front shell component and a rear shell component which are connected to each other, and the rear shell component is the rear shell component of the medical device as described in any one of claims 1 to 12.

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