CN218054577U - Printing mechanism of medical monitoring equipment and medical monitoring equipment - Google Patents

Abstract

The utility model provides a printing mechanism and medical guardianship equipment of medical guardianship equipment. The printing mechanism includes: a moveable gantry assembly comprising a gantry; and a printing paper bin for containing printing paper, the printing paper bin being mounted on the frame so as to move with the movable frame assembly; wherein the front end wall of the printing paper bin forms a bent wall which comprises a first part extending vertically from the front end of the bottom panel of the printing paper bin and a second part extending from the first part and bent towards the rear end of the printing paper bin relative to the first part, and the second part forms an anti-tilting surface for preventing the printing paper from tilting. According to the utility model discloses a printing mechanism of medical monitoring equipment beats printing paper contact anti-tilt face's one end and can not produce at the printing in-process and slide and empty, also can not influence the smooth degree of printing paper to beating printer head and carrying simultaneously.

Description

Printing mechanism of medical monitoring equipment and medical monitoring equipment

Technical Field

The utility model relates to a printing mechanism of medical monitoring equipment and medical monitoring equipment comprising the printing mechanism.

Background

Medical monitoring devices, such as fetal monitors, electrocardiographs, defibrillators, or ultrasound diagnostics, typically include a host computer and a printing mechanism disposed within the host computer. Taking the printing mechanism of the fetal monitor as an example, the laminated thermal printing paper is usually loaded in a printing paper bin, and when the printing mechanism is in operation, a rubber pressure roller driven by a stepping motor rotates at a preset speed to drag the printing paper past a thermal printing head, so as to record a curve representing the vital signs of the fetus on the thermal printing paper. Medical monitoring devices can operate in a horizontally disposed position, but in some cases, medical monitoring devices need to operate in a vertically suspended position. When the medical monitoring equipment works in a vertically suspended state, if no measures are taken, the stacked thermal printing paper meeting the standards of medical monitoring equipment such as a fetal monitor can be wholly toppled over, the smoothness of paper feeding of the thermal printing head can be influenced, and paper jamming can be caused under more serious conditions.

Accordingly, there is a need for improvements in the prior art printing mechanisms for medical monitoring devices.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to overcome the above-mentioned drawbacks of the prior art and to provide a printing mechanism for a medical monitoring device, which can overcome at least one of the above-mentioned drawbacks of the prior art.

According to an aspect of the utility model, a provide a printing mechanism of medical guardianship equipment, a serial communication port, printing mechanism includes:

a moveable gantry assembly comprising a gantry; and

a printing paper bin for containing printing paper, the printing paper bin being mounted on the frame so as to move with the movable frame assembly;

wherein the front end wall of the printing paper bin forms a bent wall including a first portion extending perpendicularly from the front end of the bottom panel of the printing paper bin and a second portion extending from the first portion and bent with respect to the first portion toward the rear end of the printing paper bin, the second portion constituting an anti-tilt surface preventing the printing paper from tilting.

Preferably, the second portion is bent at an angle of 20 to 25 ° with respect to the first portion.

Preferably, the front end wall includes front end wall portions extending from the first side wall and the second side wall of the printing paper deck, respectively, so that a space is formed between the two front end wall portions.

Preferably, the printing paper deck further comprises a loading slope extending from a top edge of the first portion to an outer side, the loading slope being formed as an arc-shaped surface gradually decreasing toward a bottom panel of the printing paper deck.

Preferably, the printing mechanism further includes a paper lifting device including a shaft rotatably provided at a front end of the printing paper bin, a paper ejection lever provided on the shaft to rotate together with the shaft, the paper ejection lever being received in or rotatable through an opening in the bottom panel, and an operating handle connected to the shaft to rotate the shaft.

Preferably, the paper lifting device further comprises a return spring connected with the operating handle to return the operating handle.

Preferably, a silica gel sleeve head is arranged at the end part of the paper ejection rod.

Preferably, the printing mechanism further comprises:

a support plate;

a support arm provided on the support plate, the support arm being provided with a print head; and

the driving mechanism is used for driving the rubber compression roller to rotate;

wherein the moveable frame assembly further comprises a rubber pressure roller mounted at a front end of the frame near an outer side of the medical monitoring device and adapted to be in pressure contact with the print head, the moveable frame assembly being moveably disposed on the support plate between the support plate and the support arm.

Preferably, the printing mechanism further comprises a locking mechanism, wherein the locking mechanism comprises elastic clamping jaws and locking columns, the elastic clamping jaws are paired and oppositely arranged at the rear end of the frame, the elastic clamping jaws tend to be clamped together, the elastic clamping jaws are opened under the action of external pushing force to receive the locking columns and tightly clamp the locking columns, and the elastic clamping jaws are separated from the locking columns under the action of external pulling force.

Preferably, the driving mechanism comprises a first belt wheel fixedly mounted at one end of the rubber compression roller, a motor mounted on the frame, a second belt wheel mounted on a rotating shaft of the motor, and a synchronous belt mounted on the first belt wheel and the second belt wheel so as to drive the rubber compression roller to rotate when the motor runs, and the motor is arranged at the tail end of the frame close to the inner side of the medical monitoring device.

Preferably, the support arm is L-shaped, the support arm being rotatably mounted at one end portion thereof on the support plate, the support arm being mounted at the other end portion thereof with a print head mounting portion on which the print head is mounted.

Preferably, the frame includes a first mounting plate and a second mounting plate which are disposed opposite to each other, and a first connecting plate and a second connecting plate which fixedly connect the first mounting plate and the second mounting plate together, the first locking member is disposed on the second connecting plate, first guide grooves and second guide grooves which extend in the longitudinal direction are formed in the first mounting plate and the second mounting plate, respectively, and both end portions of the print head mount are movably supported in the first guide grooves and the second guide grooves.

Preferably, the medical monitoring device is a fetal monitor.

According to another aspect of the present invention, there is provided a medical monitoring device, wherein the medical monitoring device comprises the printing mechanism of the medical monitoring device as described above.

According to the utility model discloses a printing mechanism of medical guardianship equipment even work under medical guardianship equipment by the vertical state that hangs, owing to have the anti-tilt face that sets up at the front end wall in printing the paper storehouse, beat the one end that beats the paper contact anti-tilt face and can not produce the slip and empty printing the in-process, also can not influence simultaneously and print the paper to beating the smooth degree that the printer head carried to ensure that printing mechanism normally moves.

Drawings

Fig. 1 schematically shows in a perspective view a printing mechanism of a medical monitoring device according to the invention;

fig. 2 schematically shows in a perspective view a movable frame assembly of a printing mechanism of a medical monitoring device according to the invention, wherein a motor and a rubber pressure roller are mounted on the frame;

fig. 3 schematically shows in perspective view a printing mechanism of a medical monitoring device according to the present invention, wherein the support arm and the print head mounting portion and the rubber platen are removed to clearly show the printing paper compartment;

FIG. 4 is a top view of the structure shown in FIG. 3;

FIG. 5 is an enlarged fragmentary view of FIG. 4 showing the locking post about to be gripped by the resilient jaws;

FIG. 6 is an enlarged fragmentary view of FIG. 4 showing the locking post having been gripped by the resilient jaws to achieve a locked condition;

FIG. 7 is a cross-sectional view showing the structure of the printing mechanism;

fig. 8 is a perspective view showing the printing paper deck on which the paper lifting device is mounted;

FIG. 9 is another perspective view showing the printing bin with the paper lifting device removed from the printing bin;

FIG. 10 is a cross-sectional view taken along line 10-10 of FIG. 9; and

fig. 11 is a further perspective view of the printing paper magazine as seen from the bottom side, wherein the lifting device is mounted on the printing paper magazine.

Detailed Description

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the drawings are only for the purpose of illustrating the invention and do not constitute a limitation on the invention.

Fig. 1 schematically shows a printing mechanism of a medical monitoring device according to the invention in a perspective view. As shown in fig. 1, a printing mechanism 1 of a medical monitoring device according to the present invention generally comprises a support plate (or base plate) 3, the support plate 3 being typically mounted on a housing of the medical monitoring device (not shown), such as a fetal monitor. The printing mechanism 1 of the medical monitoring device according to the present invention further comprises a support arm 5, in the preferred embodiment, the support arm 5 is substantially L-shaped, the support arm 5 is rotatably mounted on the support plate 3 at one end 5a, the support arm 5 is mounted with a print head mounting portion 7 at the other end 5b thereof, and a print head such as a thermal print head is mounted on the print head mounting portion 7. In fig. 1, the print head is not visible because it is mounted on the lower side of the print head mounting portion 7. The print head is in wired or wireless electrical communication with a host of the medical monitoring device to receive signals from the host for printing operations. According to the utility model discloses a printing mechanism 1 of medical monitoring equipment still includes portable frame subassembly 9, portable frame subassembly 9 is movably set up on bearing plate 3 and is arranged in the space between bearing plate 3 and support arm 5.

Fig. 2 schematically shows in a perspective view a movable frame assembly of a printing mechanism of a medical monitoring device according to the invention, wherein a motor and a rubber pressure roller are mounted on the frame. As shown in fig. 2, the movable frame assembly 9 includes a frame 11, and the frame 11 includes a first mounting plate 13 and a second mounting plate 15 that are oppositely disposed, and a first connecting plate 17 and a second connecting plate 19 that fixedly connect the first mounting plate 13 and the second mounting plate 15 together. In the preferred embodiment, the first mounting plate 13, the second mounting plate 15, the first connecting plate 17 and the second connecting plate 19 are all metal members such as aluminum or other lightweight metal or alloy members that are formed separately and then connected together by fasteners such as screws, so that the frame 11 is formed as a highly rigid metal frame. It should be understood that the first mounting plate 13, the second mounting plate 15, the first connecting plate 17 and the second connecting plate 19 may also be integrally cast from metal. Of course, the first mounting plate 13, the second mounting plate 15, the first connecting plate 17 and the second connecting plate 19 may also be integrally injection molded from plastic. The movable carriage assembly 9 also includes a printing paper hopper 16 mounted between the first mounting plate 13 and the second mounting plate 15 for receiving printing paper 18. In fig. 2, the printing paper deck 16 mounted on the frame 11 is not shown.

The movable rack assembly 9 further comprises a rubber compression roller 21 with two ends rotatably supported on the first mounting plate 13 and the second mounting plate 15, the rubber compression roller 21 is rotatably supported at the front ends of the first mounting plate 13 and the second mounting plate 15 close to the outer side of the medical monitoring device through bearings, and a first belt pulley 23 is fixedly mounted at one end of the rubber compression roller 21. The movable frame assembly 9 further includes a motor 25 mounted on the first mounting plate 13 at a distance from the rubber press roller 21 in the longitudinal direction of the first mounting plate 13, and a second pulley (not visible in the drawing) is mounted on a rotating shaft of the motor 25. A timing belt 27 is mounted on the first pulley 23 and the second pulley so that the rubber press roller 21 is rotated by the second pulley, the timing belt 27 and the first pulley 23 when the motor is operated. Thus, according to the present invention, the rubber pressing roller 21, the motor 25, and the timing belt 27 connecting the rubber pressing roller 21 and the motor 25 are all mounted on the frame 11, and even when the movable frame assembly 9 is extracted from the housing of the medical monitoring apparatus to take and place printing paper and then inserted into the housing of the medical monitoring apparatus, the rubber pressing roller 21, the motor 25, and the timing belt 27 move together with the frame 11, but their mutual positions remain unchanged, so that their positioning accuracy can be ensured, and the printing mechanism can be operated in balance without generating noise or significantly reducing noise.

Preferably, the motor 25 is disposed at the rear end of the first mounting plate 13 near the inside of the medical monitoring device, which allows the movable housing assembly 9 to be formed with a generally uniform thickness and thus have a relatively flat regular shape. As a result, the printing mechanism can have a relatively compact, regular layout. More preferably, the first pulley 23, the second pulley and the motor 25 are disposed adjacent to the first mounting plate 13, so that the overall structure is more compact and occupies as little space as possible. The dimensions of the first mounting plate 13 and the second mounting plate 15 are selected such that the rubber press roller 21, the first pulley on the rubber press roller 21, the timing belt 27, the motor 25, and the second pulley on the motor 25 are all located inside at least one of the first mounting plate 13 and the second mounting plate 15, ensuring that no moving parts protrude or are left bare outside the frame 11. Although the first and second mounting plates 13 and 15 may have the same length, in a preferred embodiment, since the second mounting plate 15 does not support the motor 25, the length of the second mounting plate 15 may be shorter than the length of the first mounting plate 13, which may reduce the amount of material used and the weight of the rack 11. Although in the preferred embodiment the drive mechanism for driving the rubber press roller in rotation comprises an electric motor, a first pulley, a second pulley and a timing belt, it will be appreciated that the drive mechanism for driving the rubber press roller in rotation may take other configurations, including, for example, a frame-mounted electric motor that drives a rubber press roller also mounted on the frame by gear engagement.

First and second guide grooves 29, 31 extending in the longitudinal direction are formed on the first and second mounting plates 13, 15, respectively, and both end portions 7a, 7b of the head mount 7 are movably supported in the first and second guide grooves 29, 31, respectively.

Fig. 3 schematically shows in perspective view a printing mechanism of a medical monitoring device according to the present invention, wherein the support arm and the print head mounting portion and the rubber press roller are removed to clearly show the printing paper cartridge; fig. 4 is a top view of the structure shown in fig. 3. The printing paper magazine 16 for accommodating printing paper 18 is clearly shown in fig. 3, the printing paper magazine 16 may be injection molded from plastic, and the printing paper magazine 16 is fixedly supported on the frame 11, for example by clipping, screws or other fastening means, and may be moved together with the frame 11 or the movable frame assembly 9.

According to the utility model discloses a printing mechanism 1 of medical guardianship equipment still includes locking mechanism, and locking mechanism is including setting up the first locking part 33 in the second connecting plate 19 (i.e. frame 11 towards the inboard rear end of the casing of medical guardianship equipment) outside of frame 11 to and set up the second locking part 35 on bearing plate 3. When the housing 11 with the cartridge 16 therein is pushed into the housing of the medical monitoring device, the first locking member 33 and the second locking member 35 can be engaged with each other by the external pushing force, thereby locking the movable housing assembly 9 and the cartridge 16 in place in the housing of the medical monitoring device. When the housing 11 containing the printing paper cartridge 16 is pulled outward from the housing of the medical monitoring device, the first locking member 33 and the second locking member 35 can be disengaged by an external pulling force, so that the movable housing assembly 9 and the printing paper cartridge 16 are pulled outward from the housing of the medical monitoring device.

In the preferred embodiment shown in fig. 3 and 4, the first locking member 33 comprises a pair of oppositely disposed resilient jaws 37, the resilient jaws 37 being intended to clamp together. The second locking part 35 comprises a locking column 39 arranged on the support plate 3 in correspondence with the resilient jaws 37. When the housing 11 with the cartridge 16 is pushed into the housing of the medical monitoring device, the resilient jaws 37 open under the action of an external force to receive the locking posts 39 and then to grip the locking posts 39 tightly, thereby locking the cartridge 16 in place in the housing of the medical monitoring device, as shown in fig. 5 and 6. When the frame 11 with the printing paper cartridge 16 is pulled outward from the housing of the medical monitoring device, the elastic claws 37 are pulled away from the locking posts 39, thereby pulling the printing paper cartridge 16 outward from the housing of the medical monitoring device.

In order for the locking column 39 to be reliably locked by the pair of elastic claws 37, each elastic claw 37 is formed with a coating portion 37a that is bent outward and then bent inward. The two oppositely disposed coatings 37a preferably form a () shape or a < > shape to retain the locking post 39. Further, each elastic claw 37 may further include a guide portion 37b bent outward again from the covering portion 37a. The two oppositely disposed guide portions 37b are preferably splayed to guide the locking post 39 into the space between the two cladding portions 37a. Although the locking post 39 may be cylindrical, it is preferred that the two sides of the locking post 39 are chamfered, with the two flat surfaces 39a formed by the chamfering converging towards the direction of the printing hopper 16, which further helps to guide the locking post 39 into engagement with the pair of resilient jaws 37.

When the printing paper bin 16 is to be completely closed, the inner wall of the covering part 37a of the elastic clamping jaw 37 exerts a pushing force on the locking column 39, which is helpful for pushing the printing paper bin 16. After the printing paper compartment 16 is completely closed, the resilient jaw 37 may be reset to make a "click" sound to provide feedback to the user that the printing paper compartment 16 is completely closed.

In the preferred embodiment shown in fig. 3 and 4, two pairs of resilient jaws 37 and corresponding two locking posts 39 are provided, but it will be appreciated that only one or more pairs of resilient jaws 37 and corresponding locking posts 39 are possible. It is also possible to arrange pairs of resilient clamping jaws on the support plate 3 and locking columns 39 on the frame 11.

In a normal state, the movable frame assembly 9 is inserted into the housing of the medical monitoring device in the space between the support plate 3 and the support arm 5 so that the rubber platen 21 is in pressure contact with the print head on the print head mount 7. The printing paper 16 passes between the rubber platen roller 21 and the print head. When the printing mechanism operates, the motor 25 drives the rubber pressing roller 21 to rotate through the second belt wheel, the motor 25 and the first belt wheel 23, so that the thermal printing paper is dragged to pass through the printing head, and the vital sign curve of the fetus is recorded on the printing paper.

When the movable frame assembly 9 needs to be drawn out for taking and placing the printing paper, the elastic clamping jaw 37 is separated from the locking column 39 under the action of external pulling force, so that the printing paper bin is moved to the outer side of the shell of the medical monitoring device, and the printing paper can be taken and placed conveniently. After the printing paper is loaded, the resilient jaws 37 are opened under an external pushing force to receive the locking posts 39 and then tightly grip the locking posts 39, thereby locking the printing paper cartridge 16 in place in the housing of the medical monitoring device.

According to the utility model discloses a printing mechanism, its locking mechanism not only spare part is less, the design is simple with the assembly, and the user need not to do extra pressing operation or with very big power when using moreover, only relies on the one hand and just can print the operation that opens and shuts in paper storehouse, and the push-and-pull is stable not to rock, realizes reliable and stable locking.

Fig. 7 is a cross-sectional view showing the structure of the printing mechanism, fig. 8 is a perspective view showing a printing paper deck to which the paper lifting device is mounted, fig. 9 is another perspective view showing the printing paper deck detached from the printing paper deck, and fig. 10 is a cross-sectional view taken along line 10-10 of fig. 9; and fig. 11 is a further perspective view of the printing paper deck seen from the bottom side, in which the paper lifting device is mounted on the printing paper deck. The printing paper magazine 16 may be injection molded from plastic, as shown in fig. 3, 4 and 7 and described above, and the printing paper magazine 16 is fixedly supported on the frame 11, for example by snap-fit, screws or other fastening means, and is movable with the frame 11 or the movable frame assembly 9.

As shown in fig. 8 to 11, the printing paper deck 16 is generally drawer-shaped, and includes a bottom panel 16a, first and second side walls 16b and 16c extending vertically from both sides of the bottom panel 16a, respectively, a rear end wall 16d extending vertically from the rear end of the bottom panel 16a, and a front end wall 16e formed at the front end of the bottom panel 16 a. The rear end of the bottom panel 16a refers to the end of the bottom panel 16a facing the inside of the medical monitoring device housing, and the front end of the bottom panel 16a refers to the end of the bottom panel 16a facing the outside of the medical monitoring device housing, i.e., the end near the rubber press roller 21. According to the present invention, the front end wall 16e of the printing paper hopper 16 is not a straight wall but a bent wall, and includes a first portion 16e vertically extending from the front end of the bottom panel 16a ₁ And from the first portion 16e ₁ Extends and is opposite to the first portion 16e ₁ Second portion 16e bent toward the rear end ₂ Second part 16e ₂ An anti-inclining surface for preventing the printing paper from inclining is formed.

Under the condition that the printing mechanism is vertically suspended and the front end wall 16e of the printing paper bin 16 is over, even if printing paper is assembled, the bottom of the overlapped printing paper is in contact with the anti-tilting surface, the anti-tilting surface can apply oblique upward force to the printing paper, and the resultant force direction of the force and the gravity of the printing paper points to the bottom panel 16a of the printing paper bin, so that one end of the printing paper in contact with the anti-tilting surface cannot slide or topple in the printing process, and meanwhile, the printing paper cannot be in contact with the anti-tilting surfaceAffecting the smoothness of the paper feed to the printhead. Preferably, the second portion 16e ₂ Relative to the first portion 16e ₁ Bent at an angle alpha of 20 to 25 deg..

Although the front end wall 16e may extend from the first side wall 16b to the second side wall 16c, the front end wall 16e preferably includes a front end wall portion that extends a length from the first side wall 16b and the second side wall 16c, respectively, but does not extend from the first side wall 16b to the second side wall 16 c. Thus, a space 16f is formed between the two front end wall portions, so that a user's hand can take and put the printing paper through the space 16 f.

A sub-first portion 16e may be formed at the front end of the printing paper hopper 16 ₁ And a loading slope 16g extending outward, the loading slope 16g being formed as an arc-shaped surface gradually decreasing toward the bottom panel 16a of the printing paper deck 16. When the printing mechanism is laid flat, a user only needs to place one end of the standard folded printing paper on the loading inclined plane 16g and slightly push the other end of the standard folded printing paper, and the whole stack of printing paper slides to a preset position in the printing paper bin along the loading inclined plane 16g under the action of gravity, so that the user does not need to manually push the printing paper into the printing paper bin completely.

The printing mechanism according to the present invention may further include a paper lifting device 41, wherein the paper lifting device 41 includes a shaft 43 and two paper pushing rods 45 disposed on the shaft 43 and capable of rotating together with the shaft 43. It is understood that the paper ejection lever 45 may be one or more. In the preferred embodiment, the shaft 43 and the paper ejection rod 45 are integrally formed by injection molding. The shaft 43 is rotatably provided at the front end of the printing paper deck 16. In a preferred embodiment, a snap ring 16h is formed at the front end of the printing paper deck 16, and the shaft 43 can be snapped into the snap ring 16h so that the shaft 43 is rotatably disposed in the snap ring 16 h. It should be understood that the shaft 43 may be rotatably disposed at the front end of the printing paper cartridge 16 in other suitable manners. The paper lifting device 41 further comprises an operating handle 47, and the operating handle 47 can be connected with the shaft 43 through a mounting plate of the frame 11. The return spring 49 has one end connected to the operating handle 47 and the other end connected to the frame 11 or the printing paper deck 16. The bottom panel 16a of the printing paper deck 16 is provided with an opening 16i corresponding to the top paper lever 45, and the opening 16i is used for accommodating the top paper lever 45 or allowing the top paper lever 45 to pass therethrough.

To current printing mechanism, the user need follow the gap between printing paper storehouse and the printing paper and detain printing paper by bare-handed, but this gap is general very little, and this has brought very big inconvenience for the user to change printing paper. According to the utility model discloses, the user need change beat printing paper or adjust when beating the state of beating printing paper in the printing paper storehouse, will be equipped with the portable frame subassembly that prints the paper storehouse earlier and outwards pull out from medical monitoring equipment's casing, through rotating operation handle 47, and then drive axle 43 and a top paper pole 45 and rotate and rise with the bottom surface board 16a from printing paper storehouse 16 to upwards and outside ejecting beating paper, convenience of customers changes and beats printing paper. The end part of the paper ejection rod 45 can be provided with a silica gel sleeve head 51, and when the paper ejection rod 45 rotates, the silica gel sleeve head 51 further drags printing paper towards the front end (outlet) of the printing paper bin, so that the printing paper is sent out. When the operating knob 47 is released, the operating knob is rotated back to the initial position by the return spring 49, and in turn, the paper ejection lever 45 is rotated back to the position in the opening 16i or below the bottom plate 16 a.

According to the utility model discloses, through selecting properly long, wide, the high size of printing the paper storehouse, can be in the compact of beating printing paper spacing and beat and acquire the balance between the paper loading and unloading smoothness degree, realize beating the good balance between the paper compact spacing and beat printing paper play paper smoothness degree.

While the invention has been described in detail in connection with the preferred embodiments thereof, it is to be understood that such detail is solely for that purpose and that no limitation of the invention is thereby intended. For example, the first locking member may be provided as a shaft and the second locking member may be provided as a sleeve for receiving the shaft, the shaft and sleeve being releasably engaged by friction. The scope of the present invention is defined by the claims.

Claims (14)

1. A printing mechanism for a medical monitoring device, the printing mechanism comprising:

a moveable gantry assembly (9), the moveable gantry assembly (9) comprising a gantry (11); and

a printing paper magazine (16) for containing printing paper, the printing paper magazine (16) being mounted on the frame (11) for movement with the movable frame assembly;

wherein the front end wall (16 e) of the printing paper bin (16) forms a bent wall which comprises a first part (16 e) vertically extending from the front end of the bottom panel (16 a) of the printing paper bin (16) ₁ ) And from said first portion (16 e) ₁ ) Extends and is opposite to the first part (16 e) ₁ ) A second portion (16 e) bent toward the rear end of the printing paper bin (16) ₂ ) Said second portion (16 e) ₂ ) Forming an anti-inclining surface for preventing the printing paper from inclining.

2. The printing mechanism of a medical monitoring device as defined in claim 1, wherein the second portion (16 e) ₂ ) Relative to the first portion (16 e) ₁ ) Bent at an angle of 20 to 25 deg..

3. Printing mechanism for a medical monitoring device according to claim 1, wherein the front end wall (16 e) comprises front end wall portions extending from a first side wall (16 b) and a second side wall (16 c) of the printing paper magazine (16), respectively, such that a space (16 f) is formed between the two front end wall portions.

4. The printing mechanism of a medical monitoring device according to claim 1, wherein the printing paper cartridge (16) further comprises a second portion (16 e) extending from the first portion (16 e) ₁ ) A loading slope (16 g) extending outward, the loading slope (16 g) being formed as an arc-shaped face gradually decreasing toward a bottom panel (16 a) of the printing paper deck (16).

5. The printing mechanism of medical monitoring equipment as set forth in claim 1, characterized in that the printing mechanism further comprises a paper lifting device (41), the paper lifting device (41) comprises a shaft (43) rotatably disposed at the front end of the printing paper bin (16), a paper top lever (45) disposed on the shaft (43) to rotate together with the shaft (43), and an operating handle (47) connected with the shaft (43) to rotate the shaft (43), the paper top lever (45) being received in the opening (16 i) on the bottom panel (16 a) or being rotatable through the opening (16 i) on the bottom panel (16 a).

6. Printing mechanism for medical monitoring devices according to claim 5, characterized in that the paper lifting device (41) further comprises a return spring (49) connected to the operating handle (47) for returning the operating handle (47).

7. Printing mechanism for medical monitoring devices according to claim 5, characterized in that a silicone cuff (51) is provided at the end of the paper ejector rod (45).

8. The printing mechanism of a medical monitoring device of claim 1, wherein the printing mechanism further comprises:

a support plate (3);

a support arm (5) arranged on the support plate (3), and a printing head is arranged on the support arm (5); and

the driving mechanism is used for driving the rubber press roller (21) to rotate;

wherein the movable frame assembly (9) further comprises a rubber press roller (21) mounted at the front end of the frame (11) near the outside of the medical monitoring device and used for pressure contact with the printing head, and the movable frame assembly (9) is movably arranged on the support plate (3) and is positioned between the support plate (3) and the support arm (5).

9. Printing mechanism for medical monitoring devices according to claim 8, further comprising a locking mechanism, wherein the locking mechanism comprises elastic jaws (37) arranged in pairs and opposite at the rear end of the frame (11), and locking posts (39) arranged on the support plate (3) in correspondence of the elastic jaws (37), the elastic jaws (37) being intended to be clamped together with each other, the elastic jaws (37) being opened under an external pushing force to receive the locking posts (39) and tightly clamp the locking posts (39), the elastic jaws (37) being disengaged from the locking posts (39) under an external pulling force.

10. The printing mechanism of the medical monitoring device as claimed in claim 8, wherein the driving mechanism comprises a first belt wheel (23) fixedly mounted at one end of the rubber pressure roller (21), a motor (25) mounted on the frame (11), a second belt wheel mounted on a rotating shaft of the motor (25), and a synchronous belt (27) mounted on the first belt wheel (23) and the second belt wheel for driving the rubber pressure roller (21) to rotate when the motor (25) operates, wherein the motor (25) is arranged at the tail end of the frame (11) close to the inner side of the medical monitoring device.

11. A printing mechanism for a medical monitoring apparatus according to claim 8, wherein the support arm (5) is L-shaped, the support arm (5) being rotatably mounted at one end (5 a) to the support plate (3), the support arm (5) being mounted at its other end (5 b) with a print head mount (7), the print head being mounted on the print head mount (7).

12. The printing mechanism of medical monitoring equipment as set forth in claim 11, wherein the frame (11) comprises a first mounting plate (13) and a second mounting plate (15) which are oppositely arranged, and a first connecting plate (17) and a second connecting plate (19) which fixedly connect the first mounting plate (13) and the second mounting plate (15) together, the first mounting plate (13) and the second mounting plate (15) being formed with a first guide slot (29) and a second guide slot (31) which extend in the longitudinal direction, respectively, and the two end portions (7 a, 7 b) of the print head mount (7) being movably supported in the first guide slot (29) and the second guide slot (31).

13. The printing mechanism of the medical monitoring device of claim 1, wherein the medical monitoring device is a fetal monitor.

14. A medical monitoring device comprising a printing mechanism of the medical monitoring device according to any of claims 1-13.

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