CN112654296A

CN112654296A - Roller locking structure of medical equipment and ultrasonic diagnostic apparatus

Info

Publication number: CN112654296A
Application number: CN201880097296.XA
Authority: CN
Inventors: 陈志武; 杨荣富; 易巍; 魏开云
Original assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd; Shenzhen Mindray Scientific Co Ltd
Current assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd; Shenzhen Mindray Scientific Co Ltd
Priority date: 2018-11-05
Filing date: 2018-11-05
Publication date: 2021-04-13
Also published as: WO2020093194A1

Abstract

A roller locking structure (5) of a medical apparatus and an ultrasonic diagnostic apparatus using the same (5), the roller locking structure (5) provides a manual control mechanism and a roller locking device (52), the manual control mechanism is connected with the roller locking device (52), and a user can control the roller locking device (52) to lock and/or unlock a roller through the manual control mechanism. The manual operation is closer to the use habit of the user and is convenient for the user to control.

Description

Roller locking structure of medical equipment and ultrasonic diagnostic apparatus

Technical Field

The application relates to the field of medical instruments, in particular to a roller locking structure of medical equipment and an ultrasonic diagnostic apparatus.

Background

When medical staff uses medical equipment with a moving function (such as a cart-type ultrasonic equipment, a cart-type anesthesia machine, a movable sickbed and the like), the medical equipment is required to be capable of being stably stopped (wheels are locked) at a required position often based on the requirements of operation, diagnosis and treatment; meanwhile, the medical equipment is required to be capable of easily passing a bend and being controllably operated during the transfer process (particularly during the transfer process on a bend), so that uncontrollable collision such as turning, drifting and the like of the medical equipment is prevented.

The present central control brake system is a common brake control system for movable medical equipment, and one control mechanism is adopted to simultaneously control the braking and the braking actions of two or more casters. The central brake control system mainly comprises a double-pedal type and a single-pedal type. The braking and the releasing of the brake are controlled by feet no matter in a double-pedal type or single-pedal type structure, which is very inconvenient, particularly, a single-pedal type central brake system controls the braking and the releasing of the brake of the central brake respectively by stepping on and hooking, the action of hooking the instep is very laborious to operate, and if the instep of an operator is not well protected, the instep of the operator can be painful and even scratched. Meanwhile, the pedal type control is difficult to operate in the running process of the machine, so that the speed of the equipment during turning cannot be controlled, and once the equipment is too fast in turning, the rollover accident is very easy to cause.

Technical problem

The application provides a medical equipment's gyro wheel locking structure and adopted ultrasonic diagnostic equipment of this kind of structure for the user is manual to be controlled the gyro wheel, and convenience of customers operates.

Technical solution

In one embodiment, a roller locking structure of a medical device is provided, including:

a roller that provides a movement function to the medical apparatus;

the roller locking device has an unlocking state, a half-locking state and a full-locking state, and in the unlocking state, the roller locking device releases the roller so that the roller can roll freely; in the half-locking state, the roller locking device applies acting force capable of enabling the roller to roll at a reduced speed to the roller; in the full-locking state, the roller locking device applies acting force capable of preventing the roller from rolling to the roller;

and the manual control mechanism is connected with the roller locking device and used for controlling the state switching of the roller locking device through the manual control mechanism.

In one embodiment, the manual control mechanism comprises a manual control element and an actuating mechanism, wherein the manual control element is connected with the actuating mechanism through a mechanical structure or an electric signal, and the actuating mechanism is used for triggering the state switching of the roller locking device under the control of the manual control element.

In one embodiment, the roller locking device has a movable brake member, and the manual control mechanism controls the movement position of the brake member so as to half-lock, fully-lock or unlock the roller.

In one embodiment, the brake member locks the movement of the roller half and/or full by applying a friction force to the roller.

In one embodiment, the brake element is made of rubber.

In one embodiment, the brake piece has an unlocking position, a half-locking position and a full-locking position on the moving track of the brake piece, when the brake piece moves to the unlocking position, the brake piece releases a roller wheel, and the roller wheel can freely roll; when the braking piece moves to a half locking position, the braking piece applies acting force capable of enabling the roller to roll at a reduced speed to the roller, and when the braking piece moves to a full locking position, the braking piece applies acting force capable of enabling the roller not to roll to the roller.

In one embodiment, the braking member has an inverted step-shaped structure, the step-shaped structure is arranged facing the roller, when the braking member is located in a half-locking position and a full-locking position respectively, the outer wall of the step-shaped structure is in contact with the roller, a contact area of the step-shaped structure and the roller in the half-locking position is a first contact area, a contact area of the step-shaped structure and the roller in the full-locking position is a second contact area, and the area of the second contact area is larger than that of the first contact area.

In one embodiment, the braking member is provided with a first braking portion and a second braking portion, the first braking portion is arranged to face the roller, the second braking portion is located behind the first braking portion, the outermost side of the second braking portion protrudes out of the outermost side of the first braking portion to form the inverted step-shaped structure, when the braking member moves to a half locking position, the first braking portion is in contact with the roller, and when the braking member moves to a full locking position, the first braking portion and the second braking portion are in contact with the roller simultaneously.

In one embodiment, the roller locking device includes a first elastic resetting member, the actuator includes a second elastic resetting member, the first elastic resetting member is used for providing an elastic restoring force for urging the braking member to unlock the roller, the second elastic resetting member is used for providing an elastic restoring force for urging the braking member to lock the roller, the elastic restoring force of the second elastic resetting member is greater than the elastic restoring force applied to the braking member by the first elastic resetting member, so that the second elastic resetting member can order the braking member to lock the roller, and the manual control member controls the acting force of the second elastic resetting member on the braking member.

In one embodiment, the actuating mechanism further comprises a pressing element, the second elastic resetting element acts on the pressing element, the pressing element and the braking element are arranged separately, and the braking element can be pushed to press the roller under the action of the second elastic resetting element.

In one embodiment, the actuating mechanism further comprises more than two pull cables, each of the rollers is correspondingly provided with a roller locking device and a pressing piece, and all the pressing pieces are connected with a manual control piece through the pull cables.

In one embodiment, the actuator further includes at least one pressing rod, the number of the rollers is two or more, each roller is correspondingly provided with a roller locking device, one pressing rod simultaneously controls at least two roller locking devices to cooperate, and the pressing part is fixedly connected with the pressing rod to drive the pressing rod to move.

In one embodiment, the roller locking device and the roller are mounted on a bracket, a mounting plate is arranged above the bracket, the pressing element penetrates through the mounting plate from the top, one end of the second elastic resetting element is abutted against the mounting plate, the other end of the second elastic resetting element is arranged on the part of the pressing element penetrating through the mounting plate, and the elastic restoring force of the second elastic resetting element causes the pressing element to press the braking element to the roller.

In one embodiment, the roller locking device comprises a third elastic resetting member, the third elastic resetting member is used for providing an elastic restoring force for the braking member to enable the braking member to lock the roller, and the manual control member controls the acting force of the third elastic resetting member on the braking member.

In one embodiment, the actuator includes a cable having one end connected to the manual control member and the other end fixedly connected to the braking member for pulling the braking member away from the roller.

In one embodiment, the roller locking device further comprises a trigger lock cylinder, the brake piece is fixedly connected with the trigger lock cylinder, and the first elastic resetting piece is installed on the trigger lock cylinder.

In one embodiment, the roller locking structure uses a fully lockable caster comprising the roller and the roller locking device.

In one embodiment, the actuating mechanism adopts at least one of a push-pull electromagnet, a motor, a hydraulic power part and a pneumatic power part as a power output structure, the manual control part is electrically connected with the actuating mechanism, and the actuating mechanism drives the brake part to approach and/or depart from the roller.

In one embodiment, when a motor is used as the power output structure, the actuator includes a driving motor, a rotary screw fixed to an output end of the driving motor, a nut threadedly coupled to the rotary screw and mounted on the guide, the nut being defined by the guide to be close to and/or away from the roller lock to drive the brake member close to and/or away from the roller when the driving motor outputs a rotational motion.

In one embodiment, the output end of the actuating mechanism is fixedly connected with the brake piece and moves integrally.

In one embodiment, the manual control is a control handle and/or circuit buttons.

a roller that provides a movement function to the medical apparatus;

the roller locking device is used for locking and unlocking the roller;

and the manual control mechanism is connected with the roller locking device, and a user can control the roller locking device to lock and/or unlock the roller through the manual control mechanism.

An embodiment provides an ultrasonic diagnostic apparatus, including host computer, control panel and display device, characterized by also including any one above-mentioned gyro wheel locking structure, wherein, at least one in this control panel, host computer and display device is provided with this manual control spare.

An embodiment provides an ultrasonic diagnostic apparatus, includes host computer, control panel and display device, characterized by still includes this gyro wheel locking structure as above.

Advantageous effects

According to the roller locking structure of the above embodiment, it provides the manual control mechanism and the roller locking device, the manual control mechanism is connected with the roller locking device, and the user can control the roller locking device through the manual control mechanism, thereby controlling the state of the roller. The manual operation is closer to the use habit of the user and is convenient for the user to control. Meanwhile, based on the manual control mode, the roller locking device can have an unlocking state, a half-locking state and a full-locking state, and in the unlocking state, the roller locking device releases the roller to enable the roller to freely roll; in a half-locking state, the roller locking device applies acting force capable of enabling the roller to roll in a speed reduction mode to the roller; in the full-locking state, the roller locking device applies acting force to the roller, so that the roller cannot roll. The speed of the roller can be conveniently and manually controlled by a user, especially when the medical equipment is pushed to bend over, the speed of the roller can be slowed down to a controllable degree, the turning drift or side turning caused by the too fast speed of the medical equipment is avoided, and the use safety is improved.

Drawings

Fig. 1 is a schematic structural diagram of an ultrasonic diagnostic apparatus according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of a roller and roller locking device in a fully locked state according to an embodiment of the present disclosure;

FIG. 3 is a schematic cross-sectional view of a roller and roller locking device in an unlocked state according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of an ultrasonic diagnostic apparatus according to another embodiment of the present application;

FIG. 5 is a schematic cross-sectional view of a roller and roller locking device in a half-locked state according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of an ultrasound device movement according to an embodiment of the present application;

FIG. 7 is a schematic view of the engagement of a manual control mechanism with a roller locking device according to an embodiment of the present application;

FIG. 8 is a schematic cross-sectional view of the manual control mechanism and roller locking device shown in the embodiment of FIG. 7 in a fully locked condition;

FIG. 9 is a schematic cross-sectional view of the manual control mechanism and roller locking device of the embodiment of FIG. 7 in an unlocked state;

FIG. 10 is a schematic view of the engagement of a manual control mechanism with a roller locking device according to another embodiment of the present application;

FIG. 11 is a schematic cross-sectional view of the manual control mechanism and roller locking device shown in FIG. 10 in a fully locked condition;

FIG. 12 is a schematic cross-sectional view of the manual control mechanism and roller locking device of the embodiment of FIG. 10 in an unlocked state;

FIG. 13 is a schematic view of a roller locking arrangement according to another embodiment of the present application;

FIG. 14 is a cross-sectional schematic view of the roller locking arrangement of the embodiment of FIG. 13;

fig. 15 is a schematic cross-sectional view of a roller locking device according to another embodiment of the present application.

Modes for carrying out the invention

Detailed Description

The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).

An embodiment of the present application provides an ultrasonic diagnostic apparatus, which may be a desktop ultrasonic diagnostic apparatus or other ultrasonic diagnostic apparatus.

Referring to fig. 1, the ultrasonic diagnostic apparatus includes a display device 1, a control panel 3, and a host 4. The control panel 3 is mounted on the main body 4. The control panel 3 is generally provided with keys, knobs, etc., and a user can operate the ultrasonic diagnostic apparatus through the control panel 3. The display device 1 is used to display information of a process procedure, a result of completion of the process, or other information. The display device 1 is mounted on a host computer 4 or control panel 3 by means of a support arm 2, the support arm 2 being mounted on the host computer 4, for example in the configuration shown in figure 1.

Further, referring to fig. 1-3, the ultrasonic diagnostic apparatus further includes a roller locking structure 5. The roller lock structure 5 includes a roller 51, a roller lock 52, and a manual control mechanism.

The roller 51 is usually installed at the bottom of the whole ultrasonic diagnostic apparatus, so that the ultrasonic diagnostic apparatus (or other medical equipment) has a moving function. The roller locking arrangement 52 has an unlocked state, a half-locked state and a fully-locked state. In the fully locked state, the roller lock 52 applies a force to the roller 51 that can disable the roller 51 from rolling. For example, as shown in fig. 2, at this time, the roller locking device 52 locks the roller 51, and the roller 51 cannot roll. In the unlocked state, the roller lock 52 releases the roller 51 to allow the roller 51 to roll freely, as shown in fig. 3, and at this time, the roller lock 52 unlocks the roller 51 and the roller 51 can roll freely. In the half-locked state, the roller lock 52 applies a force to the roller 51 that can decelerate the rolling of the roller 51.

The manual control mechanism is connected to the roller lock 52, and the user can control the switching of the state of the roller lock 52 by the manual control mechanism. The manual operation is closer to the use habit of the user and is convenient for the user to control. Based on this manual control method, the user can easily and manually switch the state of the roller lock 52 to control the speed of the roller 51. Especially, when the medical equipment is pushed to be bent excessively, the speed of the roller 51 can be reduced to a controllable degree, the tail flicking or side turning of the medical equipment caused by the excessively high speed is avoided, and the use safety is improved.

The manual control mechanism may be used to control only the roller lock 52 half-lock and full-lock rollers 51, for example, the roller lock 52 is designed to unlock the rollers 51 under normal conditions and then be implemented by the user through the manual control mechanism when half-lock or full-lock of the rollers 51 is required. The manual control mechanism may also be used to control only the roller lock 52 to half-lock and unlock the roller 51, for example, the roller lock 52 is designed to always fully lock the roller 51 under normal conditions and then be engaged by the user through the manual control mechanism when the roller 51 needs to be unlocked or adjusted to half-locked. Or the manual control mechanism can be used for controlling the roller locking device 52 to switch between the unlocking state, the half-locking state and the full-locking state, so that the user can switch the locking state of the roller 51 according to actual requirements.

Further, the manual control mechanism includes a manual control 531 and an actuator. The manual control member 531 is connected to the actuator by a mechanical structure or an electrical signal. The actuator is used to trigger the switching of the state of the roller lock 52 under the control of the manual control member 531. The manual control member 531 may be provided on at least one of the display device 1, the control panel 3 and the main body 4, and these areas are convenient for the user to control manually, especially, the manual control member 531 is provided on the control panel 3 to facilitate the operation of the user.

Referring to fig. 1, in an embodiment, the manual control member 531 is disposed on the control panel 3, since the control panel 3 is usually disposed with various operation keys or knobs, which are areas frequently operated by a user manually, and the position of the control panel 3 is usually at the most comfortable operation height of the user, the manual control member 531 is disposed on the control panel 3, which is more suitable for the operation habit of the user, and the operation of the manual control member 531 by the user is more convenient.

The user controls the scroll wheel 51 by means of the manual control member 531. The manual control member 531 can be an actuator controlled by a manual control mechanism or an electric signal, so as to transmit the user's command and intention to the roller locking device 52. In one embodiment, the manual control 531 can be a control handle and/or a circuit button, or other types of triggering devices.

Referring to FIG. 1, in the embodiment shown in FIG. 1, the manual control member 531 is a control handle, and the user can control the roller locking device by pulling the position of the control handle. Referring to fig. 4, in the embodiment shown in fig. 4, the manual control member 531 is a circuit button, and a user can control the wheel locking device by pressing the circuit button.

Of course, the manual control 531 could also be other types of controls, which are manually activated by the user.

Further, the roller locking device 52 may achieve full locking and half locking of the roller 51 by various means, such as locking the roller 51 by applying a frictional force, engaging a gear rotating integrally with the roller 51 by a click, and the like. The locking and semi-locking of the roller 51 by the roller locking means 52 comprises acting directly on the roller 51 and on other components fixedly connected to the roller 51.

Referring to fig. 2 and 3, in one embodiment, the roller locking device 52 has a movable brake member 521. The manual control mechanism controls the movement position of the brake member 521 to half-lock, full-lock or unlock the roller 51 from the brake member 521.

Further, in one embodiment, the brake member 521 has an unlocking position, a half-locking position and a full-locking position on the moving track. When the brake piece 521 moves to the unlocking position, the roller locking device 52 is in the unlocking state, the brake piece 521 releases the roller 51, and the roller 51 can roll freely; when the brake 521 is moved to the half-lock position, the roller locking device 52 is in the half-lock state, the brake 521 is in contact with the roller 51, and the brake 521 applies a force to the roller 51 capable of decelerating the rolling of the roller 51. When the brake member 521 is moved to the full lock position, the roller locking device 52 is in the full lock state, the brake member 521 is in contact with the roller 51, and the brake member 521 applies a force to the roller 51 that can prevent the roller 51 from rolling.

As previously described, the brake 521 can lock the movement of the roller 51 half and/or full by applying friction to the roller 51. When the brake member 521 locks the roller 51 by applying a frictional force, the brake member 521 may be made of rubber.

The advantage of using friction to lock roller 51 is that a full or half lock of roller 51 can be achieved by adjusting the friction applied to roller 51 by brake 521. As shown in fig. 2, the brake 521 is in the fully locked position and has sufficient contact surface with the roller 51 to provide sufficient force to lock the roller 51, so that the roller 51 is in the fully locked state. As shown in fig. 5, when the braking member 521 is in the half-locked state and has a certain contact surface with the roller 51, the friction force applied to the roller 51 by the braking member 521 is not enough to completely lock the roller 51, but the friction force applied by the braking member 521 can slow down the roller 51 to make the roller 51 in the half-locked state. By adopting the structure, the function of manual braking can be realized when the equipment is in bending operation, so that the running speed of the equipment is controlled, and the equipment can be easily bent. Compared with the traditional brake locking mode, the brake structure can control the pushing speed of the equipment during turning through the manual control mechanism.

In one embodiment, the brake 521 has an inverted stepped structure disposed facing the roller 51. When the braking member 521 is located at the half-locking position and the full-locking position, respectively, the outer wall of the stepped structure contacts with the roller 51, and the contact area of the stepped structure with the roller 51 at the half-locking position is a first contact area, and the contact area of the stepped structure with the roller 51 at the full-locking position is a second contact area, and the area of the second contact area is larger than that of the first contact area. The second contact area is large enough to ensure that the stepped configuration fully locks the roller 51, whereas the first contact area is not so large as to fully lock the roller 51 but to slow the roller 51.

Referring to fig. 2, 3 and 5, in one embodiment, the brake member 521 has a first brake portion 5211 and a second brake portion 5212. The first stopper 5211 is disposed to face the roller 51, the second stopper 5212 is positioned behind the first stopper 5211, and the outermost side of the second stopper 5212 protrudes beyond the outermost side of the first stopper 5211, thereby enabling the first stopper 5211 and the second stopper 5212 to form an inverted stepped structure. When the brake 521 is moved to the half-lock position, the first brake portion 5211 is in contact with the roller 51. When the brake 521 is moved to the full lock position, the first and

second brake portions

5211 and 5212 are simultaneously in contact with the roller 51.

With continued reference to fig. 2, 3 and 5, a distance from the first brake portion 5211 to a corresponding position of the roller 51 in the unlocked state is defined as L1, and a distance from the second brake portion 5212 to a corresponding position of the roller 51 in the unlocked state is defined as L2. The positions of the roller 51 corresponding to the first brake part 5211 and the second brake part 5212 refer to positions (approximate positions shown in the figure) at which the roller 51 will contact the first brake part 5211 and the second brake part 5212. When the wheel 51 is in the unlocked state, i.e., the free state, as shown in fig. 3, L2 > L1 > 0. When the wheel 51 is in the half-lock state, as shown in fig. 5, L1=0, and L2 > 0, the ultrasonic diagnostic apparatus that is running at an excessively high speed or is turning can be decelerated, thereby enhancing the controllability of the ultrasonic diagnostic apparatus. When the roller 51 is in the full lock state, as shown in fig. 2, L2=0, and the roller 51 cannot roll, the ultrasonic diagnostic apparatus stops moving.

Referring to fig. 6, when the doctor pushes the ultrasonic diagnostic apparatus to bend, the two states can be roughly divided into three states: deceleration state before passing bend (a) to (b), bend speed reducing to minimum or braking (b), and normal speed state after passing bend (b) to (c). In the process, the manual control part 531 is needed to control the speed of the roller 51, so that the ultrasonic diagnostic apparatus can be stably transported, the advantage of manual control over foot control can be embodied, and the foot-controlled brake can not accurately and timely control the speed of the ultrasonic diagnostic apparatus.

With continued reference to fig. 2, 3 and 5, in one embodiment, the roller locking device 52 includes a trigger latch 522 (which may be omitted) and a first resilient return 523. The brake 521 is fixedly connected with the trigger lock cylinder 522. The first elastic restoring member 523 provides the braking member 521 with an elastic restoring force that urges the braking member 521 to unlock the roller 51 without being subjected to an external force applied by the manual control mechanism. The roller locking means 52 and the roller 51 may be mounted on a bracket. The first elastic restoring member 523 may be a spring, which abuts on the brake member 521 or the trigger lock cylinder 522 to move the trigger lock cylinder 522 and the brake member 521 away from the surface of the roller 51.

The trigger cylinder 522 is movable and the manual control member 531 controls the movement of the brake 521 by controlling the movement of the trigger cylinder 522 or the brake 521, including directly controlling the movement of the trigger cylinder 522 or the brake 521, e.g., a manual control mechanism is directly connected to the trigger cylinder 522 or the brake 521 to control the movement thereof. Of course, it is also possible to indirectly control the movement of the triggering lock cylinder 522 or the braking member 521, for example, the manual control mechanism is not directly connected to the triggering lock cylinder 522 or the braking member 521, but controls the movement of the triggering lock cylinder 522 or the braking member 521 by changing the stress state of the triggering lock cylinder 522 or the braking member 521, for example, referring to fig. 7-9, in an embodiment, the actuating mechanism includes a second elastic reset member 534, and the second elastic reset member 534 is used for providing an elastic restoring force for urging the braking member 521 to lock the roller 51 under the action of the external force not applied by the manual control member 531, and the elastic restoring force is greater than the acting force applied by the first elastic reset member 523 to the triggering lock cylinder 522 or the braking member 521, so as to urge the braking member to lock the roller 51. The manual control member 531 controls the acting force of the second elastic resetting member 534 on the triggering lock cylinder 522 or the braking member 521 to eliminate or weaken the control of the triggering lock cylinder 522 or the braking member 521 by the second elastic resetting member 534, so that the braking member 521 releases the roller 51 under the action of the first elastic resetting member 523 to enable the roller 51 to be switched to a half-locking state or a full-locking state.

In order to be able to press the triggering lock cylinder 522 or the brake 521 while allowing the manual control member 531 to unlock the roller 51, please refer to fig. 7-9, in an embodiment, the actuator further includes a pressing member 533, the pressing member 533 is movably disposed, the second elastic reset member 534 acts on the pressing member 533 for driving the pressing member 533 to press the brake 521 toward the roller 51, the manual control member 531 is connected to the pressing member 533, and the triggering lock cylinder 522 or the brake 521 is released by changing the position of the pressing member 533 through the manual control member 531. The pressing member 533 may be disposed separately from the triggering lock cylinder 522 or the braking member 521, but can press the triggering lock cylinder 522 or the braking member 521 under the action of the second elastic restoring member 534. When the pressing member 533 is separated from the triggering lock cylinder 522 or the braking member 521, the triggering lock cylinder 522 or the braking member 521 is moved away from the roller 51 by the first elastic restoring member 523.

With continued reference to fig. 7-9, in one embodiment, the actuator further includes a pull cable 532. One end of the pulling cable 532 is fixedly connected with the manual control member 531, and the other end is fixedly connected with the pressing member 533. The second elastic restoring member 534 is used for providing an elastic restoring force to the pressing member 533 for urging the braking member 521 to lock the roller 51, for example, for urging the pressing member 533 to press the braking member 521.

In this embodiment, the elastic restoring force provided by the second elastic restoring member 534 to the braking member 521 or the trigger key cylinder 522 causes the braking member 521 to lock the roller 51, so that the roller 51 is in the full lock state in the normal state as shown in fig. 2. The manual control member 531 (which may be a control handle, for example) is used to change the position of the pressing member 533, so that the triggering lock cylinder 522 and the braking member 521 can change positions relative to the roller 51, for example, the pressing member 533 moves upwards against the elastic restoring force of the second elastic restoring member 534, as shown in fig. 3 and 5, the triggering lock cylinder 522 and the braking member 521 move away from the roller 51 under the action of the first elastic restoring member 523, and the roller 51 is in a half-locked or unlocked state according to the distance of the upwards movement.

As shown in fig. 8, the second elastic restoring member 534 may be a spring. Under normal conditions, the pressing member 533 presses the trigger latch core 522 (or directly contacts the brake member 521) by the second elastic restoring member 534, so that the brake member 521 locks the roller 51. As shown in fig. 9, the manual control member 531 can overcome the elastic restoring force of the second elastic restoring member 534 to pull the pressing member 533 to move upwards, so as to release the trigger lock cylinder 522 and the braking member 521, and the braking member 521 is restored under the action of the first elastic restoring member 523 to release the roller 51.

In another embodiment, the roller locking device 52 includes a third elastic restoring member for providing an elastic restoring force to the brake member 521 to urge the brake member 521 to lock the roller 51. The manual control mechanism is used for controlling the action of the third elastic resetting piece on the braking piece. The third elastic restoring member may be a spring, for example, and may be similar to the first elastic restoring member in structure, but the elastic deformation direction is opposite, that is, the third elastic restoring member is used for enabling the braking member to press the roller. In this case, the actuator may include a cable or other structure. One end of the inhaul cable is connected with the manual control piece, and the other end of the inhaul cable is fixedly connected with the braking piece or other parts fixed with the braking piece and used for pulling the braking piece to be far away from the roller.

Further, in the embodiment shown in fig. 7-9, there are more than two rollers 51, and each roller 51 is provided with a roller locking device 52 and an abutting member 533. All the pressing members 533 and the rollers 51 are connected to a manual control member 531 via a cable 532, and are controlled by the manual control member 531, so that all the rollers 51 are controlled by the manual control member 531.

Further, referring to fig. 10-12, in one embodiment, the actuator further comprises at least one pressure rod 537. The number of the rollers 51 is more than two, and each roller 51 is correspondingly provided with a roller locking device 52. One pressure lever 537 simultaneously actuates at least two roller locks 52. A pressing member 533 is fixedly connected to a pressing rod 537, and all the pressing members 533 are connected to a manual control member 531 via cables 532. When the pressing member 533 is pulled by the pulling cable 532, the pressing rod 537 is driven to move. Both ends of the pressing rod 537 may be mounted on the bracket 539 through connection blocks 5310. The pressure lever 537 may have a protrusion 5371 protruding downward, and the protrusion 5371 is used to press the trigger cylinder 522 or the brake 521 of the roller locking device 52.

With continued reference to fig. 10-12, in one embodiment, the roller lock 52 and the roller 51 are mounted on a bracket 539. The bracket 539 is provided with a mounting plate 538 on the upper side, and the pressing member 533 penetrates the mounting plate 538 from the upper side. One end of the second elastic reset member 534 abuts against the mounting plate 538, and the other end of the second elastic reset member 534 is disposed at a portion of the pressing member 533 penetrating through the mounting plate 538, and the elastic reset force thereof causes the pressing member 533 and the pressing rod 537 to move downward, so as to push the trigger lock cylinder 522 and the brake member 521 to move downward and lock the roller 51.

Under the normal state, the pressing member 533 and the pressing rod 537 press the triggering lock cylinder 522 under the action of the second elastic resetting member 534, so that the brake member 521 locks the roller 51. The manual control member 531 (e.g., a control handle) is connected to the pressing member 533 to control the stroke of the pressing member, when the manual control member 531 (e.g., the control handle) is adjusted (e.g., pressed), the pressing member 533 moves upward by a certain stroke, so as to drive the pressing rod 537 to move upward by a certain stroke, and the distance between the pressing rod 537 and the trigger lock cylinder 522 can be represented by H, so as to unlock the roller 51. Of course, by controlling the distance that the pressure lever 537 moves upward, the roller 51 can also be half-locked.

Further, in one embodiment, the manual control 531 is electrically connected to the actuator. The manual control 531 may be an electric signal triggering device of various types.

Specifically, the actuator adopts at least one of a motor, a hydraulic power part and a pneumatic power part as a power output structure. The manual control element is electrically connected with the actuating mechanism to realize electric control. Which drives the brake 521 towards and/or away from the roller 51.

Referring to fig. 13 and 14, in one embodiment, the actuator 536 includes a drive motor 5311, a rotating screw 5312, a nut 5313, and a guide 5314. The rotating screw 5312 is fixed to the output end of the driving motor 5311, the nut 5313 is screwed to the rotating screw 5312, and the nut 5313 is mounted on the guide 5314. When the driving motor 5311 outputs a rotational motion, the nut 5313 is defined by the guide 5314 to be close to and/or away from the roller locking device 52 to drive the brake member 521 close to and/or away from the roller 51.

The manual control 531 (e.g., trigger button) is mounted within the control panel and is in communication with the power supply and motor 5311 via electrical wires. The actuator is mounted on a bracket 539 and may act directly on the roller lock 52 through an aperture in the bracket 539. The motor 5311 passes through the sliding bush 5315, the rotating screw 5312, and the sliding bush 5316 and is connected to the guide 5314. The motor 5311, the sliding bush 5315, the rotating screw 5312, the sliding bush 5316 and the guide 5314 are fixed in relative positions, and the motor shaft rotates to drive the rotating screw 5312 to rotate relative to the sliding bush 5315, the sliding bush 5316 and the guide 5314. Turning screw 5312 is threadably connected to nut 5313, and nut 5313 is rotationally fixed relative to guide 5314 by a structural stop. So that when the rotating screw 5312 is rotated, the nut 5313 can only move vertically relative to the guide 5314.

Take the example of the first elastic restoring member (the structure can refer to 523 above), which is used to provide the braking member 521 with the elastic restoring force for urging the braking member 521 to unlock the roller 51. In a normal state, the nut 5313 is in a low position, the lock cylinder 522 is pressed and triggered, and the roller 51 is in a full-locking state. When an operator operates the manual control member 531 (such as a trigger button), and the motor 5311 is turned on, the rotating screw 5312 rotates, the nut 5313 vertically rises, and the trigger lock cylinder 522 moves in the same direction as the nut 5313 under the action of the first elastic reset member, so that the roller 51 is unlocked or half-locked. When an operator reversely operates the trigger button 32, the motor 5311 is switched on to reversely rotate, the screw 5312 rotates reversely, the nut 5313 vertically descends to act on the trigger lock cylinder 522, and the roller 51 is locked.

In addition, referring to fig. 15, in one embodiment, the actuator is a push-pull electromagnet 5317, and the push-pull electromagnet 5317 drives the braking member 521 to move toward and/or away from the roller 51.

Take the example of the first elastic restoring member (the structure can refer to 523 above), which is used to provide the braking member 521 with the elastic restoring force for urging the braking member 521 to unlock the roller 51. In a normal state, the lock cylinder with the reset function in the push-pull electromagnet 5317 is located at a low position, the lock cylinder 522 is pressed and triggered, and the roller 51 is in a full-lock state. When an operator operates the manual control member 531 (for example, a trigger button), after the push-pull electromagnet 5317 is turned on, the lock cylinder 5318 with the reset function vertically rises, and the trigger lock cylinder 522 moves in the same direction as the lock cylinder 5318 with the reset function under the action of the built-in first elastic reset member, so that the roller 51 is unlocked or half-locked. When the operator stops operating the manual control member 531 (for example, a trigger button), the push-pull electromagnet 5317 is powered off, the lock cylinder 5318 with the reset function vertically descends, and acts on the trigger lock cylinder 522 to lock the roller 51.

In addition to actuating the brake 521 by activating the lock cylinder 522, in one embodiment, the output of the actuator is fixedly connected to the brake 521 and moves integrally therewith. For example, the nut 5313 or the lock cylinder 5318 is directly and fixedly connected to the brake 521, so as to directly drive the brake 521 to lock and unlock the roller 51.

Of course, the above examples are provided only, and the manual control member 321 can control the actuator to trigger the roller locking device 52 in other ways, and other variations will be apparent to those skilled in the art based on the above examples.

Further, in one embodiment, the roller locking structure uses a fully lockable caster. Such a fully lockable caster already comprises a roller 51 and a roller locking means 52 per se. Of course, in addition to such existing fully lockable casters, in other embodiments, the roller 51 and the roller lock 52 may be designed separately to achieve the above-mentioned purpose.

The ultrasonic diagnostic apparatus adopts the roller locking structure, so that the ultrasonic diagnostic apparatus can manually control the motion state of the roller 51. Of course, the roller locking structure is not only suitable for the ultrasonic diagnostic apparatus, but also applicable to other medical devices requiring locking and unlocking of the roller 51.

The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. Variations of the above-described embodiments may be made by those skilled in the art, consistent with the principles of the invention.

Claims

A roller locking structure of a medical apparatus, comprising:

a roller that provides a movement function to the medical device;

the roller locking device is provided with an unlocking state, a half-locking state and a full-locking state, and in the unlocking state, the roller locking device releases the roller so that the roller can roll freely; in the half-locking state, the roller locking device applies acting force capable of enabling the roller to roll at a reduced speed to the roller; in the full-locking state, the roller locking device applies acting force to the roller, so that the roller cannot roll;

and the manual control mechanism is connected with the roller locking device and used for controlling the state switching of the roller locking device through the manual control mechanism.
The roller locking arrangement of claim 1 wherein the manual control mechanism includes a manual control member and an actuator, the manual control member being connected to the actuator by a mechanical structure or an electrical signal, the actuator being adapted to trigger the switching of the roller locking arrangement under the control of the manual control member.
The roller locking structure of claim 2, wherein the roller locking device has a movable brake member, and the manual control mechanism controls the movement position of the brake member to half-lock, full-lock or unlock the roller.
The roller locking structure according to claim 3, wherein the braking member semi-locks and/or fully locks the movement of the roller by applying a frictional force to the roller.
The roller locking structure according to claim 4, wherein the braking member is made of rubber.
The roller locking structure according to claim 4 or 5, wherein there are an unlocking position, a half-locking position and a full-locking position on the moving track of the braking member, and when the braking member moves to the unlocking position, the braking member releases the roller, and the roller can freely roll; when the braking piece moves to a half locking position, the braking piece applies acting force capable of enabling the roller to roll at a reduced speed to the roller, and when the braking piece moves to a full locking position, the braking piece applies acting force capable of enabling the roller not to roll to the roller.
The roller locking structure according to claim 6, wherein the braking member has an inverted step-like structure, the step-like structure is disposed facing the roller, an outer wall of the step-like structure contacts the roller when the braking member is in the half-locked position and the full-locked position, respectively, and a contact area of the step-like structure with the roller in the half-locked position is a first contact area, a contact area of the step-like structure with the roller in the full-locked position is a second contact area, and an area of the second contact area is larger than an area of the first contact area.
The roller locking structure according to claim 7, wherein the braking member has a first braking portion disposed to face the roller and a second braking portion located behind the first braking portion, and an outermost side of the second braking portion protrudes from an outermost side of the first braking portion and forms the inverted stepped structure, the first braking portion contacts the roller when the braking member is moved to the half locking position, and the first braking portion and the second braking portion simultaneously contact the roller when the braking member is moved to the full locking position.
The roller locking structure according to any one of claims 3 to 8, wherein the roller locking device includes a first elastic resetting member, the actuator includes a second elastic resetting member, the first elastic resetting member is configured to provide an elastic restoring force for urging the braking member to unlock the roller, the second elastic resetting member is configured to provide an elastic restoring force for urging the braking member to lock the roller, the elastic restoring force of the second elastic resetting member is greater than the elastic restoring force applied to the braking member by the first elastic resetting member, so that the second elastic resetting member can urge the braking member to lock the roller, and the manual control member controls an acting force of the second elastic resetting member on the braking member.
The roller lock structure according to claim 9, wherein the actuator further comprises a pressing member, the second elastic restoring member acts on the pressing member, the pressing member is disposed apart from the braking member and is capable of pushing the braking member toward the roller under the action of the second elastic restoring member.
The roller locking structure according to claim 10, wherein the actuator further comprises a cable, the number of the rollers is two or more, each roller is provided with a roller locking device and a pressing member, and all the pressing members are connected with a manual control member through the cable.
The roller locking structure according to claim 10 or 11, wherein the actuator further comprises at least one pressing rod, the number of the rollers is two or more, a roller locking device is correspondingly disposed on each roller, one pressing rod simultaneously controls at least two roller locking devices to cooperate, and the pressing member is fixedly connected to the pressing rod for driving the pressing rod to move.
The roller lock structure according to any one of claims 10 to 12, wherein the roller lock device and the roller are mounted on a bracket, a mounting plate is provided above the bracket, the pressing member passes through the mounting plate from above, the second elastic return member has one end abutting the mounting plate and the other end provided at a portion of the pressing member passing through the mounting plate, and the elastic return force of the second elastic return member urges the pressing member to press the brake member against the roller.
The roller locking structure according to any one of claims 3 to 8, wherein the roller locking means includes a third elastic return member for providing an elastic return force to the braking member to urge the braking member to lock the roller, and the manual control member controls an urging force of the third elastic return member to the braking member.
The roller locking arrangement of claim 14 wherein the actuator includes a cable having one end connected to the manual control member and another end fixedly connected to the brake member for pulling the brake member away from the roller.
The roller locking structure according to any one of claims 9 to 15, wherein the roller locking device further comprises a trigger lock cylinder, the braking member is fixedly connected to the trigger lock cylinder, and the first elastic restoring member is mounted on the trigger lock cylinder.
The roller locking structure according to any one of claims 3 to 16, wherein a full-lockable caster is used, the full-lockable caster comprising the roller and the roller locking device.
The roller lock structure according to any one of claims 3 to 8, wherein the actuator employs at least one of a push-pull electromagnet, a motor, a hydraulic power member and a pneumatic power member as a power output structure, the manual control member is electrically connected to the actuator, and the actuator drives the brake member toward and/or away from the roller.
The roller locking structure according to claim 18, wherein when a motor is employed as the power take-off structure, the actuator includes a driving motor, a turning screw fixed to an output end of the driving motor, a nut threadedly coupled to the turning screw and mounted on the guide, the nut being defined by the guide to be close to and/or away from the roller locking device to drive the brake to be close to and/or away from the roller when the driving motor outputs a rotational motion.
The roller lock structure of claim 18, wherein the output end of the actuator is fixedly connected to the brake member and moves integrally therewith.
The wheel locking mechanism of any one of claims 2-20, wherein the manual control is a control knob and/or a circuit button.
A roller locking structure of a medical apparatus, comprising:

a roller that provides a movement function to the medical device;

the roller locking device is used for locking and unlocking the roller;

and the manual control mechanism is connected with the roller locking device, and a user can control the roller locking device to lock and/or unlock the roller through the manual control mechanism.
An ultrasonic diagnostic apparatus comprising a main body, a control panel and a display device, further comprising a roller locking structure according to any one of claims 2 to 22, wherein the manual control member is provided on at least one of the control panel, the main body and the display device.
An ultrasonic diagnostic apparatus comprising a main body, a control panel and a display device, characterized by further comprising the roller locking structure of claim 1.