A fetal heart monitor with a rotatable display screen

Abstract

The present invention provides a fetal heart monitor with a rotatable display screen, which includes a body and a display head. The body is provided with a detection module at the first end, and a circuit board is arranged inside the body. The detection module is electrically connected to the circuit board; the display head is provided with a display module, and the display module is electrically connected to the circuit board. The display head is rotatably connected to the second end of the body; the rotation axis direction of the display head includes one or more of the direction along the length direction of the body or perpendicular to the length direction of the body. When the rotation axis direction of the display head includes the direction perpendicular to the length direction of the body, a first limiting device is provided at the second end of the body to limit the rotation amplitude of the display head. This fetal heart monitor can be operated with one hand, and during detection, the screen can always be kept within the visible range by rotating the display screen.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular, to a fetal heart monitor. Background Art

[0002] A fetal heart monitor mainly includes a detection probe and a main unit, and a display screen is provided on the main unit. Existing fetal heart monitors are generally divided into two types in terms of structure: a separated type of the detection probe and the main unit, and an integrated type of the detection probe and the main unit. The advantage of the separated type of the detection probe and the main unit is that when moving the detection probe to find the fetal heart, it will not affect the user's observation of the screen. Its disadvantage is that it requires the user to operate with both hands, resulting in a poor user experience. The advantage of the integrated type of the detection probe and the main unit is that the user can operate with one hand, thus freeing the other hand. Its disadvantage is that when the user moves the fetal heart monitor to find the position of the fetal heart, the screen may be out of the visible range, resulting in the inability to read the specific fetal heart rate value and affecting the user experience.

[0003] In view of the above problems, it is necessary to provide a fetal heart monitor that can be operated with one hand and can always keep the screen within the visible range during detection. Summary of the Invention

[0004] In view of the above problems, the present invention provides a fetal heart monitor with a rotatable display screen, which can be operated with one hand and can always keep the screen within the visible range by rotating the display screen during detection.

[0005] To achieve the above object, the technical solution adopted by the present invention is: a fetal heart monitor with a rotatable display screen, including a body and a display head. The body is provided with a detection module at the first end, and a circuit board is provided inside the body. The detection module is electrically connected to the circuit board. The display head is provided with a display module, and the display module is electrically connected to the circuit board. The display head is rotatably connected to the second end of the body. The rotation axis direction of the display head includes one or more of the direction along the length direction of the body or the direction perpendicular to the length direction of the body. When the rotation axis direction of the display head includes the direction perpendicular to the length direction of the body, a first limiting device is provided at the second end of the body to limit the rotation amplitude of the display head.

[0006] Preferably, when the rotation axis direction of the display head includes the direction along the length direction of the body, the display head is rotatably connected to the second end of the body through a rotating link, and one of the body and the display head is rotatably connected to the first end of the rotating link.

[0007] Preferably, a second limiting device is provided on the rotating link, and a third limiting device that cooperates with the second limiting device is provided on the body or the display head that is rotatably connected to the first end of the rotating link.

[0008] Preferably, an electrical connection structure is provided at the rotational connection, which is composed of a connection contact and a connection contact piece. One of the connection contact and the connection contact piece is provided at the first end of the rotating link, and the other is provided on the fuselage or the display head that is rotatably connected corresponding to the first end of the rotating link. One of the connection contact and the connection contact piece is electrically connected to the circuit board, and the other is electrically connected to the display module.

[0009] Preferably, the rotational connection structure is composed of a matching spherical protrusion and a spherical rotating connection sleeve; one of the spherical protrusion and the spherical rotating connection sleeve is provided on the first end of the rotating link, and the other is provided on the fuselage or the display head that is rotatably connected corresponding to the first end of the rotating link. In the assembled state, the spherical rotating connection sleeve is sleeved on the spherical protrusion to form a rotational connection.

[0010] Preferably, the second end of the rotating link is hinged to one of the second end of the fuselage and the display head that is not connected to the first end of the rotating link, and the direction of its rotation axis is perpendicular to the length direction of the fuselage.

[0011] Preferably, the second end of the rotating link is fixedly connected to one of the second end of the fuselage and the display head that is not connected to the first end of the rotating link, and the fixed connection method is one or more of direct machining, interference fit, pin fixing, screw fixing, etc.

[0012] Preferably, when the rotation axis direction of the display head is only perpendicular to the length direction of the fuselage, the fuselage and the display head are connected by a hinge.

[0013] Preferably, an outer edge surrounding the display head is formed on the second end of the fuselage, and a rotational damping strip in contact with the display head is provided on the outer edge.

[0014] Preferably, the display module includes a display screen circuit board, a display screen and a display panel, the detection module includes a piezoelectric ceramic sheet, the piezoelectric ceramic sheet is electrically connected to the circuit board, a power module is provided inside the fuselage, and the power module is electrically connected to the circuit board.

[0015] The beneficial effects of the present invention are as follows: The fuselage of the rotatable fetal heart monitor of the present display screen is integrated with the detection module and the display module, enabling the user to perform single-handed operation, which is convenient and flexible; at the same time, the display head of the fetal heart monitor equipped with the display module is rotatably connected to the fuselage, so that the display screen can rotate within a certain angle range, facilitating the user to adjust the display screen angle arbitrarily according to the viewing angle requirement during detection, so as to always keep the screen within the visible range and achieve no dead angle in observation. Description of the Drawings

[0016] Appendix Figure 1 is the structural schematic diagram of the first embodiment of the present invention;

[0017] Appendix Figure 2 is the external appearance schematic diagram of the first embodiment of the present invention;

[0018] Appendix Figure 3 is the schematic diagram showing the display head in the first rotation angle state in the first embodiment of the present invention;

[0019] Appendix Figure 4 is the schematic diagram showing the display head in the second rotation angle state in the first embodiment of the present invention;

[0020] Appendix Figure 5 is Appendix Figure 1 the sectional view taken along the line A-A in

[0021] Appendix Figure 6 is the schematic diagram of the second embodiment of the present invention;

[0022] Appendix Figure 7 is the schematic diagram of the third embodiment of the present invention;

[0023] Appendix Figure 8 is the schematic diagram of the first implementation manner of the fourth embodiment of the present invention;

[0024] Appendix Figure 9 is the schematic diagram of the second implementation manner of the fourth embodiment of the present invention;

[0025] Appendix Figure 10 is the schematic diagram of the third implementation manner of the fourth embodiment of the present invention;

[0026] Appendix Figure 11 is the schematic diagram of the first implementation manner of the fifth embodiment of the present invention;

[0027] Appendix Figure 12 is the schematic diagram of the second implementation manner of the fifth embodiment of the present invention;

[0028] Appendix Figure 13 is the schematic diagram of the third implementation manner of the fifth embodiment of the present invention;

[0029] Appendix Figure 14 is the schematic diagram of the first implementation manner of the sixth embodiment of the present invention;

[0030] Appendix Figure 15 is the schematic diagram of the second implementation manner of the sixth embodiment of the present invention;

[0031] Appendix Figure 16 is the schematic diagram of the third implementation manner of the sixth embodiment of the present invention;

[0032] Appendix Figure 17Schematic diagram of the fourth implementation manner of Embodiment VI of the present invention;

[0033] Appendix Figure 18 Schematic diagram of Embodiment VII of the present invention;

[0034] Appendix Figure 19 Schematic diagram of Embodiment VIII of the present invention.

[0035] In the above drawings: 1. Body; 11. Rotating link; 111. Spherical protrusion; 112. Connecting contact; 113. Body hinge joint; 114. Limit block; 12. Circuit board; 13. Angle limit plate; 14. Outer edge; 15. Rotating damping strip; 16. Power module; 17. Power switch; 18. Volume switch; 2. Display head; 21. Spherical rotating connection sleeve; 22. Connecting contact piece; 23. Display screen circuit board; 24. Display screen; 25. Display panel; 26. Display part hinge joint; 27. Limit strip; 3. Detection module; 31. Piezoelectric ceramic sheet. Specific embodiments

[0036] The present invention will be further described below in conjunction with the drawings and embodiments:

[0037] The present case will be clearly described below with diagrams and detailed descriptions. After any person skilled in the art understands the embodiments of the present case, the techniques taught by the present case can be changed and modified without departing from the spirit and scope of the present case.

[0038] The terms used herein are only for describing specific embodiments and are not intended to limit the present case. Singular forms such as "a", "this", "this", "the present", and "the" also include plural forms as used herein.

[0039] Regarding the "first", "second", etc. used herein, they do not particularly refer to the meaning of order or sequence, nor are they used to limit the present case. They are only used to distinguish components or operations described with the same technical terms.

[0040] Regarding the "connection" or "positioning" used herein, it can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, and can also refer to two or more components or devices operating or acting on each other.

[0041] Regarding the "including", "comprising", "having", etc. used herein, they are all open-ended terms, that is, they mean including but not limited to.

[0042] Regarding the terms used in this text, unless otherwise specified, they generally have their ordinary meanings in the field, in the context of this case, and in the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art regarding the description of this case.

[0043] Regarding the terms "front", "rear", "upper", "lower", "left", "right", etc. used in this text, they are all directional terms. In this case, they are only used to illustrate the positional relationship between various structures and are not used to limit the protection scope of this case and the specific direction during actual implementation.

[0044] Embodiment 1:

[0045] As Figures 1 to 5 shown in Embodiment 1, a display-rotatable fetal heart monitor is provided, which includes a body 1 and a display head 2. The body 1 is provided with a detection module 3 at the first end and a rotating link 11 at the second end. A circuit board 12 is provided inside the body 1. The detection module 3 is electrically connected to the circuit board 12. The display head 2 is rotatably connected to the body 1 through the rotating link 11. A display module is provided on the display head 2, and the display module is electrically connected to the circuit board 12.

[0046] During operation, the detection module 3 transmits the acquired information to the circuit board 12, and the circuit board 12 then outputs the result to the display module for display. Among them, the detection module 3 includes a piezoelectric ceramic sheet 31, and the piezoelectric ceramic sheet 31 is connected to the circuit board 12 through a wire. The display module includes a display screen circuit board 23, a display screen 24, and a display panel 25. The display screen circuit board 23 is electrically connected to the circuit board 12. Among them, the detection module 3 is a prior art, and those skilled in the art can flexibly select it according to specific needs. Since its specific structure is not the inventive point of this case, it will not be elaborated in this case.

[0047] In this embodiment, the first end of the rotating link 11 is fixedly connected to the second end of the fuselage 1. A spherical protrusion 111 is formed on the second end of the rotating link 11. A spherical rotating connection sleeve 21 matching the spherical protrusion 111 is provided on the display head 2. In the assembled state of the display head 2 and the fuselage 1, the spherical rotating connection sleeve 21 is sleeved on the spherical protrusion 111, constituting a rotational connection between the spherical rotating connection sleeve 21 and the spherical protrusion 111. In this rotational connection, it includes the rotation of the spherical rotating connection sleeve 21 around a first rotation axis in the circumferential direction and the rotation of the spherical rotating connection sleeve 21 around a second rotation axis. The first rotation axis is the length direction of the fuselage 1, and the second rotation axis is perpendicular to the first rotation axis. Among them, there can be countless second rotation axes, distributed on a plane perpendicular to the axis of the rotating link 11. In this rotational connection, it can simultaneously include the rotation of the spherical rotating connection sleeve 21 around the axis along the length direction of the fuselage 1 and the rotation of the spherical rotating connection sleeve 21 around a direction perpendicular to the length direction of the fuselage 1, as Figure 3 , Figure 4 shown, having a large rotation range.

[0048] Among them, the spherical rotating connection sleeve 21 is located inside the housing of the display head 2, as Figure 1 shown. The spherical rotating connection sleeve 21 is located at the geometric center of the display head 2. The first end of the display head 2 has an opening, and the rotating link 11 extends into this opening, constituting the cooperation between the spherical protrusion 111 and the spherical rotating connection sleeve 21. An angular limit plate 13 is formed on the second end of the fuselage 1. The outer edge of the opening serves as a limit part and abuts against the angular limit plate 13 to realize the limit of the rotation amplitude of the display head 2. In this embodiment, the angular limit plate 13 limits the display head 2 to rotate between the first rotation angle state as Figure 3 shown and the second rotation angle state as Figure 4 shown. Among them, the first rotation angle and the second rotation angle are the angles between the plane where the display screen 24 is located and the length direction of the fuselage 1. In this embodiment, the first rotation angle is 5 degrees, and the second rotation angle is 35 degrees. In the actual implementation process, by changing the position of the angular limit plate 13, the rotation angle range of the display head 2 can be increased or decreased. For example, moving the angular limit plate 13 away from the display head 2 can increase the rotation angle range, and approaching the display head 2 can decrease the rotation angle range. It is also possible to change the rotation angle range of the display head 2 by changing the size and shape of the opening. For example, reducing the opening can reduce the rotation angle range.

[0049] As Figure 3 shown, when the display head 2 reaches the limit position as shown in area A, it is the first rotation angle state as shown by the included angle α in the figure; as Figure 4As shown, when the display head 2 reaches the limit position as shown in area B, it is in the second rotation angle state as shown by the included angle β in the figure.

[0050] In addition, a groove is formed on the first end of the rotating link 11. In the assembled state, the angle limiting plate 13 is embedded in the groove, constituting a fixed connection between the angle limiting plate 13 and the rotating link 11. Thus, the angle limiting plate 13 has two functions of limiting and fixing the rotating link 11 at the same time, which can streamline the structure and reduce costs.

[0051] A second limiting device is provided on the rotating link 11. In this embodiment, the second limiting device is a limiting block 114. A third limiting device that cooperates with the second limiting device is provided on the display head 2. In this embodiment, the third limiting device is a limiting strip 27, as Figure 5 shown. In this embodiment, through the mutual abutting action between the limiting block 114 and the limiting strip 27, the rotation of the limiting block 114 is restricted, so as to restrict the axial rotation of the display head 2 around the fuselage 1, prevent the display head 2 from rotating multiple circles in the same direction around the fuselage 1, and thus enable the display head 2 and the circuit board 12 to be electrically connected through a wire, so as to avoid the wire from being wound around the rotating link 11 and avoid the risks such as wire breakage that may be caused. Using a wire can economically and effectively realize the electrical connection between the display head 2 and the circuit board 12, and has a low manufacturing cost and assembly difficulty.

[0052] In this embodiment, an outer edge 14 surrounding the display head 2 is formed on the second end of the fuselage 1. A rotary damping strip 15 in contact with the display head 2 is provided on the outer edge 14. Thus, a certain frictional resistance is added to the display head 2 during rotation, so as to prevent the display head 2 from rotating by itself when the user does not rotate it.

[0053] In this embodiment, a power supply module 16 is provided inside the fuselage 1. The power supply module 16 is connected to the circuit board 12 through a wire. The power supply module 16 is a battery provided inside the fuselage 1. In actual implementation, the power supply module 16 can also supply power to the fetal heart monitor by accessing an external power supply.

[0054] In this embodiment, a power switch 17 and a volume switch 18 are provided on the fuselage 1.

[0055] The fuselage 1 of this rotatable display type fetal heart monitor is integrated with the detection module 3 and the display module, enabling the user to perform single-handed operation, which is convenient and flexible. At the same time, the display head 2 equipped with the display module of this fetal heart monitor is rotatably connected to the fuselage 1, so that the display screen 24 can rotate within a certain angle range, facilitating the user to adjust the angle of the display screen 24 at will according to the observation angle requirements during detection, so as to always keep the screen within the visible range and achieve a dead-free observation.

[0056] Embodiment 2:

[0057] As Figure 6 shown in Embodiment 2, the difference from Embodiment 1 is that the positions of the spherical protrusion 111 and the spherical rotary connecting sleeve 21 are swapped. That is, a spherical protrusion 111 is provided on the display head 2, and a spherical rotary connecting sleeve 21 that cooperates with the spherical protrusion 111 is provided at the second end of the rotary link 11, and the rotation of the display head 2 within the aforementioned range can also be realized.

[0058] Embodiment 3:

[0059] As Figure 7 shown in Embodiment 3, the difference from Embodiment 2 is that no limit block 114 is provided on the rotary link 11, and no limit strip 27 is provided on the display head 2. Instead, a connection contact 112 is embedded on the surface of the spherical protrusion 111, and a connection contact piece 22 is covered on the inner side surface of the spherical rotary connecting sleeve 21. When the display head 2 and the fuselage 1 are in an assembled state, the connection contact 112 is in electrical contact with the connection contact piece 22; the connection contact 112 is connected to the circuit board 12 through a wire, and the connection contact piece 22 is connected to the display screen circuit board 23 through a wire; in this structure, the electrical connection between the display screen circuit board 23 and the circuit board 12 can be maintained when the display head 2 rotates arbitrarily. The connection contact piece 22 can be more than one, and correspondingly, the connection contact 112 can also be more than one.

[0060] Similar to Embodiment 2, in actual implementation, the positions of the spherical protrusion 111 and the spherical rotary connecting sleeve 21 can be swapped, and the positions of the connection contact 112 and the connection contact piece 22 can also be swapped.

[0061] Embodiment 4:

[0062] As [[ID= shown in Embodiment 4, the main difference from the above embodiments is that the rotational connection manner between the display head 2 and the fuselage 1 is different.

[0063] In this embodiment, the second end of the body 1 is provided with a structure that rotatably cooperates with the first end of the rotating link 11. The relative rotational center of the body 1 and the rotating link 11 is along the length of the body 1. The method of rotational cooperation is not limited in this embodiment and can, for example, involve direct cooperation between the rotating link 11 and a groove structure on the body 1, or by employing a rotation bearing to reduce friction. The second end of the rotating link 11 is provided with a body hinge 113 that is articulated with the display head 2. The display head 2 is provided with a display unit hinge 26 that articulates with the body hinge 113. The body hinge 113 and the display unit hinge 26 are articulated.

[0064] exist ​ In the state shown, that is, when the rotating link 11 is in rotational engagement with the body 1 and the body hinge 113 is in articulated engagement with the display unit hinge 26, the rotating link 11 and the display head 2 can rotate as a whole along the length of the body 1. When the limit block 114 and the limit bar 27 come into contact, the rotation of the rotating link 11 and the display head 2 as a whole along the axial direction of the body 1 is restricted. The display head 2 can also rotate about the center of the articulated engagement ( ​ The angle limiting plate 13 can limit the rotation angle of the display head 2.

[0065] like ​ As shown, similar to the third embodiment, in this embodiment, the limiting block 114 and the limiting strip 27 may not be provided, but the connecting contact 112 and the corresponding connecting contact piece 22 are provided at the rotational fit and / or the hinged fit.

[0066] Embodiment 5:

[0067] like ​ The fifth embodiment shown is different from the fourth embodiment in that the cooperation mode between the body 1 and the rotating link 11 is set to be hinged cooperation, and the connection mode between the rotating link 11 and the display head 2 is set to be rotational cooperation.

[0068] exist ​ In the state shown, the display head 2 can rotate around the length direction of the body 1. The rotational cooperation method is not limited in this embodiment. For example, the rotating connecting rod 11 can directly cooperate with the groove structure on the display head, or a rotation bearing can be added.

[0069] The display head 2 and the rotating link 11 can be rotated around the hinge center ( ​ The angle limiting plate 13 can limit the rotation angle of the whole composed of the display head 2 and the rotating link 11.

[0070] Example Six:

[0071] As ​ shown in Example Six, the difference from the above embodiments lies in the different rotational connection manners between the display head 2 and the fuselage 1.

[0072] In this embodiment, the first end of the rotary link 11 is fixedly connected to the second end of the fuselage 1, and the second end of the rotary link 11 is provided with a structure that rotatably cooperates with the display head 2. The display head 2 can rotate with the length direction of the fuselage 1 as the rotation axis. The rotation cooperation manner is not limited in this embodiment. For example, it can be a direct cooperation between the rotary link 11 and the groove structure on the display head 2, or a way of adding a rotary bearing. In ​ the shown cooperation state, the display head 2 can rotate around the length direction of the fuselage 1. A limit block 114 is provided on the rotary link 11, and a limit strip 27 is provided on the display head 2. The two cooperate with each other to limit the rotation angle of the display head 2.

[0073] As ​ shown, in this embodiment, it is also possible that the first end of the rotary link 11 is rotatably connected to the fuselage 1, and the second end is fixedly connected to the display head 2. A limit strip 27 is provided on the fuselage 1, that is, the two are swapped.

[0074] As ​ shown, in this embodiment, it is also possible to cancel the settings of the limit block 114 and the limit strip 27, and connection contacts 112 and connection contact pieces 22 are provided at the rotational connection. During the rotation of the whole of the display head 2 and the rotary link 11 relative to the fuselage 1, the screen on the display head 2 is always electrically connected to the circuit board 12.

[0075] Compared with the above embodiments, the display head 2 in this embodiment can only rotate circumferentially with the rotary link 11 as the rotation axis. Its rotation range is smaller, but the structure is relatively simple and the cost is lower.

[0076] Example Seven:

[0077] As ​ shown in Example Seven, the difference from the above embodiments lies in the different rotational connection manners between the display head 2 and the fuselage 1.

[0078] In this embodiment, a fuselage hinge head 113 that can perform hinge cooperation is fixedly provided at the second end of the fuselage 1, and a display part hinge head 26 that can be hinged with the fuselage hinge head 113 is fixedly provided on the display head 2. The display module on the display head 2 is directly electrically connected to the circuit board 12 through a wire.

[0079] In ​ the state shown in the figure, that is, when the fuselage hinge joint 113 is hingedly engaged with the display part hinge joint 26, the display head 2 can rotate with the direction perpendicular to the fuselage length direction as the rotation axis (shown as the direction perpendicular to the paper surface in the figure), and the angle limiting plate 13 can limit the rotation angle of the display head 2.

[0080] Embodiment Eight:

[0081] As ​ shown in Embodiment Eight, the difference from Embodiment Seven is that a connection contact 112 is provided on the fuselage hinge joint 113, and a connection contact piece 22 is provided on the display part hinge joint 26. The two constitute a set of electrical cooperation structures. The connection contact 112 and the connection contact piece 22 always remain in contact during the rotation of the display head 2, so that the display screen 24 and the circuit board 12 are always electrically connected.

[0082] In this embodiment, the positions of the connection contact 112 and the connection contact piece 22 can be swapped, that is, the connection contact 112 is provided on the fuselage hinge joint 113, and the connection contact piece 22 is provided on the display part hinge joint 26.

[0083] In the above embodiments, ​ only to illustrate the rotational connection method between the fuselage 1 and the display head 2, so the display screen circuit board 23, the display screen 24, the display panel 25, etc. are simplified, but it should be considered that it does not prevent the description of the rotational connection method between the fuselage 1 and the display head 2 in the corresponding embodiments.

[0084] In the above embodiments, the fixed connection method between the rotating link 11 and the fuselage 1 or the display head 2 can be the groove clamping in Embodiment 1, that is, interference fit, or it can be directly formed during production and processing, or at least one of the fixing methods such as pin, screw, and bonding can be adopted.

[0085] The above embodiments are only for explaining the technical concept and characteristics of the present invention. The purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A fetal heart rate monitor with a rotatable display screen, characterized in that: It includes a fuselage (1) and a display head (2). The fuselage (1) is provided with a detection module (3) at its first end, and a circuit board (12) is arranged inside the fuselage (1). The detection module (3) is electrically connected to the circuit board (12); a display module (3) is provided on the display head (2), and the display module (3) is electrically connected to the circuit board (12). The display head (2) is rotatably connected to the second end of the fuselage (1); the rotation axis direction of the display head (2) includes one or more of the direction along the length direction of the fuselage (1) or perpendicular to the length direction of the fuselage (1). When the rotation axis direction of the display head (2) includes the direction perpendicular to the length direction of the fuselage (1), a first limiting device is provided at the second end of the fuselage (1) to limit the rotation amplitude of the display head (2). When the rotation axis direction of the display head (2) includes the direction along the length direction of the fuselage (1), the display head (2) is rotatably connected to the second end of the fuselage (1) through a rotating link (11), and one of the fuselage (1) and the display head (2) is rotatably connected to the first end of the rotating link (11). A second limiting device is provided on the rotating link (11), and a third limiting device that cooperates with the second limiting device is provided on the fuselage (1) or the display head (2) that is rotatably connected to the first end of the rotating link (11). An electrical connection structure is provided at the rotation connection part, and the electrical connection structure is composed of a connection contact (112) and a connection contact piece (22). One of the connection contact (112) and the connection contact piece (22) is arranged at the first end of the rotating link (11), and the other is arranged on the fuselage (1) or the display head (2) that is rotatably connected to the first end of the rotating link (11). One of the connection contact (112) and the connection contact piece (22) is electrically connected to the circuit board (12), and the other is electrically connected to the display module. The rotation connection structure is composed of a spherical protrusion (111) and a spherical rotating connection sleeve (21) that match each other; one of the spherical protrusion (111) and the spherical rotating connection sleeve (21) is arranged at the first end of the rotating link (11), and the other is arranged on the fuselage (1) or the display head (2) that is rotatably connected to the first end of the rotating link (11). In the assembled state, the spherical rotating connection sleeve (21) is sleeved on the spherical protrusion (111) to form a rotation connection.

2. The rotatable fetal heart monitor with a display screen according to claim 1, characterized in that: The second end of the rotating link (11) is hinged to one of the second end of the fuselage (1) and the display head (2) that is not connected to the first end of the rotating link (11), and its rotation axis direction is perpendicular to the length direction of the fuselage (1).

3. The rotatable fetal heart monitor with a display screen according to claim 1, characterized in that: The second end of the rotating link (11) is fixedly connected to one of the second end of the fuselage (1) and the display head (2) that is not connected to the first end of the rotating link (11), and its fixed connection method is one or more of direct machining, interference fit, pin fixing, and screw fixing.

4. A display rotatable fetal heart monitor according to claim 1, characterized in that: When the axis direction of the rotation of the display head (2) is only perpendicular to the length direction of the fuselage (1), the fuselage (1) and the display head (2) are connected by a hinge.

5. A rotatable fetal heart monitor with a display screen according to claim 1, characterized in that: An outer edge (14) surrounding the display head (2) is formed on the second end of the fuselage (1), and a rotary damping strip (15) in contact with the display head (2) is provided on the outer edge (14).

6. The rotatable fetal heart monitor with a display screen according to claim 1, characterized in that: The display module includes a display screen circuit board (23), a display screen (24) and a display panel (25), the detection module (3) includes a piezoelectric ceramic sheet (31), the piezoelectric ceramic sheet (31) is electrically connected to the circuit board (12), and a power supply module (16) is provided inside the fuselage (1), and the power supply module (16) is electrically connected to the circuit board (12).

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