CN106264582B

CN106264582B - Failure protection device and failure protection method for medical instrument

Info

Publication number: CN106264582B
Application number: CN201510277829.0A
Authority: CN
Inventors: 张笑妍; 郭军
Original assignee: General Electric Co
Current assignee: General Electric Co
Priority date: 2015-05-27
Filing date: 2015-05-27
Publication date: 2021-07-30
Anticipated expiration: 2035-05-27
Also published as: CN106264582A

Abstract

The invention relates to a failure protection device and a failure protection method for a medical apparatus, wherein the medical apparatus comprises a base for installing a protected device, and the failure protection device comprises: the shell is provided with a concave part and is connected with the base; and a sensor, a portion of the sensor being located within the recess and another portion being located outside the recess.

Description

Failure protection device and failure protection method for medical instrument

Technical Field

The present disclosure relates to a device and a method for protecting medical instruments from failures, and particularly to a device and a method for protecting medical instruments from failures.

Background

Many existing medical devices, such as CT machines, magnetic resonance machines, X-ray machines, etc., are equipped with some suspension members, which are usually mounted on a base. These suspension members have a relatively large mass and may rotate and otherwise move as the base moves during use of the medical device.

Due to incorrect installation of the suspension parts, loose installation parts, structural fatigue and the like, the suspension parts can fall off during movement, damage equipment and threaten the safety of patients.

The prior art generally employs some fail-safe arrangement which ensures that the suspension elements temporarily do not fall out in the event of a failure of the mounting. However, existing fail-safe devices do not provide an alert to the operator of the medical instrument when there is a loosening of the suspension member. Furthermore, the safety factor of the failsafe device is low, which makes it impossible to ensure that the suspension element does not fall off for a long time. Therefore, there is a possibility that the suspension member may be detached from time to time without an alarm being given to the operator. When the suspension element is disengaged, the existing fail-safe devices must also be destroyed and cannot be reused.

Disclosure of Invention

The invention aims to provide a failure protection device and a method for medical equipment, which can solve the problems that in the prior art, an operator cannot be timely warned, and the failure protection device cannot be reused.

Another embodiment of the present invention provides a fail safe apparatus for a medical device, the medical device including a base for mounting a protected item, the fail safe apparatus comprising: the shell is provided with a concave part and is connected with the base; and a sensor, a portion of the sensor being located within the recess and another portion being located outside the recess.

One embodiment of the present invention provides a fail safe method for a medical device, comprising: reading state information of a sensor in the failure protection device; reading state information of a detection piece in the failure protection device; and when the state information of the sensor or the state information of the detection piece is abnormal, outputting the abnormal state information and generating an alarm.

Drawings

The invention may be better understood by describing embodiments of the invention in conjunction with the following drawings, in which:

FIGS. 1A and 1B illustrate the general construction of a first embodiment of a fail safe apparatus for a medical device of the present invention;

FIGS. 2A and 2B illustrate one embodiment of the connection between the fail safe apparatus of FIG. 1, a base of a medical device, and a device to be protected;

FIG. 3 is a cross-sectional view of one embodiment of the fail safe apparatus of FIG. 1 shown in a positional relationship with a protected device when the protected device is not loosened;

FIG. 4 is a cross-sectional view of one embodiment of the fail safe apparatus of FIG. 1 shown in a positional relationship with a protected device when the protected device is loose;

FIGS. 5A and 5B are perspective and cross-sectional views, respectively, of one embodiment of the fail safe apparatus of FIG. 1 in a condition for removing a protected device protected by the fail safe apparatus;

FIG. 6 illustrates one embodiment of the fail safe apparatus of FIG. 1 for protecting a detector in a CT machine;

FIGS. 7A and 7B illustrate one embodiment of the general structure of a second embodiment of the fail safe apparatus for a medical device of the present invention;

FIG. 8 illustrates one embodiment of a sensor in the fail safe apparatus shown in FIG. 7;

FIG. 9 illustrates one embodiment of the connection between the failsafe apparatus of FIG. 7, a base of a medical device, and a protected item;

FIG. 10 is a cross-sectional view of one embodiment of the fail safe apparatus of FIG. 7 shown in a positional relationship with a protected device when the protected device is not loosened;

FIG. 11 is a cross-sectional view of one embodiment of the fail safe apparatus of FIG. 7 shown in a positional relationship with a protected device when the protected device is loose;

FIG. 12 illustrates an embodiment of the fail safe apparatus of FIG. 7 with a sensing member;

FIG. 13 illustrates an embodiment of the fail safe apparatus of FIG. 7 for protecting a bulb tube in a CT machine

FIG. 14 illustrates one embodiment of the general construction of a third embodiment of the fail safe apparatus for a medical device of the present invention;

FIG. 15 illustrates one embodiment of the fail safe apparatus of FIG. 14 for protecting a rotatable member of a gantry of a CT machine;

16A, 16B and 16C illustrate one embodiment of the general structure of a fourth embodiment of the fail safe apparatus for a medical device of the present invention;

FIG. 17 illustrates one embodiment of a sensor of the fail safe apparatus shown in FIG. 16C;

FIG. 18 illustrates one embodiment of the connection between the fail safe apparatus of FIG. 16C and a base and protected device of a medical device;

one example of the condition of the failsafe device shown in fig. 19, 16C, when the protected item is loose

FIG. 20A is a top view of one embodiment of the fail safe apparatus of FIG. 15 with a sensing member, respectively;

FIG. 20B is a cross-sectional view taken along line A-A of FIG. 20A;

FIG. 21 illustrates one embodiment of the use of multiple fail safe devices for a protected device;

FIG. 22 illustrates one embodiment of the use of multiple fail safe devices on the gantry of a CT machine;

FIG. 23 illustrates one embodiment of a fail-safe method of the present invention.

Detailed Description

While specific embodiments of the invention will be described below, it should be noted that in the course of the detailed description of these embodiments, in order to provide a concise and concise description, all features of an actual implementation may not be described in detail. It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions are made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another. Moreover, it should be further appreciated that such a development effort might be complex and tedious, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, and thus should not be construed as a complete understanding of this disclosure.

Unless otherwise defined, technical or scientific terms used in the claims and the specification should have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The terms "a" or "an," and the like, do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalent, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, nor are they restricted to direct or indirect connections.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

According to an embodiment of the present invention, a fail safe apparatus for a medical device is provided.

Generally, the medical device will have a base for mounting components thereon, which in the following description will be referred to as the protected device, namely: a device protected by a failsafe apparatus. In the process of using the medical apparatus, the protected device can move along with the base under the driving of the base.

Referring to fig. 1A and 1B, in one embodiment of the invention, a fail safe device 100 may include a housing 101 and a sensor 102. The housing 101 may be provided with a recess 103, and a portion of the sensor 102 may be located within the recess 103 and another portion located outside the recess 103.

In one embodiment of the present invention, the sensor 102 may be a touch sensor having elasticity.

In one embodiment of the present invention, the housing 101 of the fail safe device 100 may include at least two

cylinders

104 and 105 with different diameters, and the recessed portion of the cylinder 104 with smaller diameter toward the center of its circle with respect to the

cylinders

105 and 109 with larger diameter may be regarded as the above-mentioned recessed portion 103.

In one embodiment of the present invention, the sensor 102 may be in the shape of a ring, which may be located on any cylinder of the plurality of cylinders other than the cylinder with the largest diameter. For the fail safe device 100 shown in fig. 1A and 1B, the sensors 102 may be located at the outer periphery of a smaller diameter cylinder 104.

Referring to fig. 1A in conjunction with fig. 3, in one embodiment of the present invention, after the sensor 102 is mounted on the outer circumference of the cylinder 104, a portion of the sensor 102 is located inside the recess 103, and another portion of the sensor 102 may be located outside the recess 103, in a direction perpendicular to the face of the sensor 102 that contacts the protected device 201, i.e., in a radial direction of the sensor 102. In addition, the sensor 102 may protrude from the housing 101 adjacent to the sensor 102 (e.g., the cylinder 105 and the cylinder 109 in the housing). In one embodiment of the present invention, the outer diameter of the toroidal sensor 102 may be larger than the largest diameter of the plurality of cylinders on the housing. In another embodiment of the invention, the outer diameter of the toroidal sensor 102 may be larger than the largest diameter of the cylinders adjacent to it on the housing.

In one embodiment of the present invention, referring to fig. 1A and 1B, the failsafe device 100 may further include a fixing member 106, which is sleeved on the outer circumference of the housing 101, for fixing the data line of the sensor 102. In one embodiment of the present invention, the fixing member 106 may be a circular ring shape.

In one embodiment of the present invention, referring to fig. 1A and 1B in combination with fig. 2A, the fail safe apparatus 100 may further include a locking member 107 protruding from the housing 101 for preventing the protected device from moving in the axial direction of the housing 101. In one embodiment of the invention, the locking member 107 may include a locking tongue 108 and a spring 110. One end of the spring 110 may be attached within the housing 101 and the other end may be attached to the latch 108. During normal use after the failsafe device is installed, the latch 108 may protrude from the housing 101 to prevent the protected device 201 from moving in the axial direction of the housing.

Referring to fig. 2A and 2B, in installing and using the fail safe device 100, a through hole 203 may be provided on the protected device 201, and one end of the housing 101 may pass through the through hole 203 and be connected to the base 202.

Referring to fig. 3, in one embodiment of the present invention, the diameter of the through hole 203 may be larger than the outer diameter of the sensor 102, so that, if the protected device 201 is not displaced by loosening in the axial direction perpendicular to the housing 101 during use of the medical device, there is a certain space between the protected device 201 and the sensor 102, namely: the protected device 201 does not press against the sensor 102.

Referring to fig. 4, when the protected device 201 is displaced in a direction perpendicular to the axial direction of the casing 101 due to loosening, the protected device 201 presses the sensor 102, and the sensor 102 can transmit a corresponding signal to play a role of real-time warning. Accordingly, a sensor data processing module (not shown) may be provided, which may be coupled to the sensor 102, for receiving and processing data from the sensor 102. Since the sensor 102 has a certain elasticity, when the protected device 201 presses against it, its diameter becomes smaller, and when it is smaller than the outer diameter of the cylinder on the housing adjacent to it, the pressing force of the protected device 201 will be mainly borne by the housing, which prevents the sensor from being damaged due to excessive pressing. Therefore, even if the protected device 201 loosens, after it is remounted and fastened, the sensor 102 can restore its original shape and continue to function as a fail-safe.

In another embodiment of the present invention, when the through hole 203 is a tapered hole and the outer surface of the sensor 102 is also tapered, the diameter of the through hole 203 may be equal to or even slightly smaller than the outer diameter of the sensor 102. Thus, if the protected device 201 is not displaced by the looseness in the direction perpendicular to the axial direction of the housing 101, the protected device 201 only slightly contacts or presses the sensor 102. By setting an appropriate decision threshold, it can be determined whether the signal sent by the sensor represents that the protected device 201 is loose or not.

In summary, the fail safe apparatus 100 can be used for fail safe and alarm when the protected device is moved perpendicular to its axial direction.

In one embodiment of the present invention, referring to fig. 5A and 5B, when it is desired to remove the protected device 201, the deadbolt 108 of the fail safe apparatus 100 may be pressed into the housing 101 with a suitable tool and then the protected device 201 may be removed from the base 202.

In one embodiment of the present invention, referring to fig. 6, the above-described fail-safe apparatus 100 may be used to fail-protect a detector 600 in a CT machine. Typically, the detector 600 is mounted on the gantry 601 and rotates as the gantry 601 rotates. Therefore, in one embodiment of the present invention, two fail-

safe devices

602 and 603 may be provided, and when the probe 600 is displaced in the direction perpendicular to the axial direction of the fail-

safe device

602 or 603, the fail-

safe devices

602 and 603 may prevent the probe 600 from moving in this direction, thereby performing fail-safe and alarm functions.

Referring to fig. 7A in conjunction with fig. 7B, in one embodiment of the invention, a failsafe device 700 may include a housing 701 and a sensor 702. The housing 701 may be provided with a recess 703, and a portion of the sensor 702 may be located within the recess 703 and another portion may be located outside the recess 703.

In one embodiment of the invention, the sensor 702 may be a touch sensor having elasticity.

In one embodiment of the present invention, the housing 701 of the fail safe device 700 may include at least two

cylinders

704 and 705 having different diameters, and the recessed portion of the cylinder 704 having a smaller diameter toward the center of the circle with respect to the cylinder 705 having a larger diameter may be regarded as the above-mentioned recessed portion 703.

Referring to FIG. 8, in one embodiment of the invention, a sensor 702 may include an annular sensing face 801 and an end sensing face 802. In one embodiment of the present invention, the annular sensing surface 801 and the end sensing surface 802 can be connected by the buffer groove 803, so that damage to the connection portion between the two sensing surfaces due to one sensing surface being pressed can be reduced. In one embodiment of the present invention, the axial direction of the annular sensing face 801 may be perpendicular to the plane of the end sensing face 802.

Referring to fig. 7A, 7B in conjunction with fig. 10, in one embodiment of the invention, the failsafe device 700 may further include a washer 706, a nut 707, and a collar 708. The gasket 706 may have a groove 1001, the gasket 706 may be fitted over the housing 701, a portion of the end sensing surface 802 may be located in the groove 1001 and another portion may protrude from the gasket 706, and a nut 707 may be screwed onto the outer circumference of the housing 701 to hold the gasket 706. A collar 708 may fit over the housing 701 and hold the nut 707.

Referring to fig. 10 in conjunction with fig. 7A and 7B, when the sensor 702 is mounted on the housing 701, the annular sensing surface 801 may be located on any one of a plurality of cylinders except the cylinder with the largest diameter, such as: may be located on the cylinder 704. In a direction perpendicular to the surface of the annular sensing surface 801 that contacts the protected device, that is, in a radial direction of the annular sensing surface 801, a portion of the annular sensing surface 801 may be located inside the recess 703 and another portion of the annular sensing surface 801 may be located outside the recess 703. In addition, the annular sensing surface 801 may protrude from a cylinder 705 in the housing 701 adjacent to the annular sensing surface 801. In one embodiment of the present invention, the outer diameter of the annular sensing surface 801 can be greater than the outer diameter of the cylinder on the housing adjacent to the annular sensing surface 801.

In another embodiment of the present invention, the sensor 702 may be comprised of a separate ring sensor and end sensor. Similar to the configuration described above in which a single sensor includes an annular sensing face and an end sensing face, the annular sensor may be located on any of the cylinders other than the cylinder with the largest diameter. The axial direction of the annular sensor may be perpendicular to the plane of the end sensor. A portion of the end sensing face 802 may be located within the recess 1001 and another portion may protrude beyond the gasket. One portion of the ring sensor may be located inside the recess 703 and another portion may be located outside the recess 703. In addition, the ring sensor may protrude from a cylinder 705 in the housing 701 adjacent to the ring sensor. In one embodiment of the invention, the outer diameter of the ring sensor may be greater than the outer diameter of the cylinder on the housing adjacent the ring sensor.

Referring to fig. 9A and 9B, in installing and using the above-described fail safe device 700, a through hole 903 may be provided in a protected device 901, and one end of a housing 701 may pass through the through hole 903 and be connected to a base 902.

Referring to fig. 10, in one embodiment of the present invention, the diameter of the through hole 903 may be larger than the outer diameter of the annular sensing surface 801 or the outer diameter of the annular sensor, so that, if the protected device 901 has no displacement due to loosening in the direction perpendicular to the axial direction of the housing 701 during use of the medical device, there is a certain space between the protected device 901 and the annular sensing surface 801 or the annular sensor, that is: the protected device 901 is not pressed against the annular sensing surface 801 or the annular sensor. Similarly, when the failsafe device 700 is in place, there is a gap between the protected device 901 and the end sensing surface 802 or the end sensor, so that during use of the medical device, if the protected device 901 does not move in a direction parallel to the axial direction of the housing 701 due to loosening, the protected device 901 will not press against the end sensing surface 802 or the end sensor.

Referring to fig. 11, when the protected device 901 is displaced by loosening in the axial direction perpendicular to the housing 701 and in the axial direction parallel to the housing 701, the protected device 901 will press the annular sensing surface 801/annular sensor and the end sensing surface 802/end sensor at the same time, and the sensor 702 can transmit corresponding signals to play a role of real-time warning. Accordingly, a sensor data processing module (not shown) may be provided, which may be coupled to the sensor 702, for receiving and processing data from the sensor 702. Since the annular sensing surface 801 and the annular sensor have a certain elasticity, when the protected device 901 is pressed against it, its diameter becomes smaller, and when it is smaller than the outer diameter of the cylinder adjacent to it, the pressing force of the protected device 901 will be mainly borne by the housing, which prevents the sensor from being damaged due to excessive pressing. Similarly, since the end sensing face 802 and the end sensor have a certain elasticity, when the protected device 901 is pressed against it, the diameter thereof becomes smaller, and when the end sensing face is pressed into the groove 1001 completely, the pressing force of the protected device 901 will be transmitted to the housing mainly by the gasket 706 to take over, which prevents the sensor from being damaged due to excessive pressing.

Therefore, even if the protected device 901 loosens, after it is remounted and fastened, the sensor 702 can recover its original shape and continue to function as a fail-safe.

In another embodiment of the invention, when the through hole 903 is a tapered hole and the outer surface of the sensor 702 is also tapered, the diameter of the through hole 903 may be equal to or even slightly smaller than the outer diameter of the annular sensing surface 801 or the outer diameter of the annular sensor. Thus, if the protected device 901 is not displaced by the play in the direction perpendicular to the axial direction of the housing 701, the protected device 901 only slightly contacts or presses the annular sensing surface 801 or the annular sensor. It can be determined whether the signal sent by the sensor represents that the protected device 901 is loosened or not loosened by setting an appropriate decision threshold.

Similarly, the protected device 901 may just touch or even slightly press against the end sensing surface 802 or the end sensor during normal operation, and it can be determined whether the signal sent by the sensor represents that the protected device 901 is loose or not by setting an appropriate determination threshold.

In summary, the fail safe apparatus 700 may be used for fail safe and alarm both when the protected device is moving in an axial direction parallel to the fail safe apparatus and when the protected device is moving in an axial direction perpendicular to the fail safe apparatus.

Referring to fig. 12, in an embodiment of the present invention, the fail-safe device 700 may further include a detecting member 1201, one end of which is connected to the base 902, and the detecting member 1201 may output a prompt message when the connection between the fail-safe device 700 and the base 902 is in place. In one embodiment of the present invention, the detecting member 1201 may be a sensor. By means of the detecting member 1201, the operator can determine whether the fail-safe device 700 has been properly installed in place.

It is emphasized that the sensing member 1201 may also be used with the above described fail safe device 100 and fail safe device 1400 described below.

In one embodiment of the present invention, referring to fig. 13, the above-described failsafe device 700 may be used to failsafe a bulb 1300 in a CT machine. Typically, the bulb 1300 is mounted to the frame 601 and rotates as the frame 601 rotates. Thus, in one embodiment of the present invention, two

failsafe devices

1301 and 1302 may be provided, and the

failsafe devices

1301 and 1302 may function as a failsafe and alarm when the bulb 1300 is displaced in an axial direction perpendicular to the

failsafe devices

1301 and 1302 or displaced in a direction parallel to the

failsafe devices

1301 and 1302.

Referring to FIG. 14, in one embodiment of the invention, a failsafe device 1400 may include an outer shell 1401 and a sensor 1402. A recess 1403 (the portion of fig. 14 that is enclosed by the sensor 1402) may be provided on the housing 1401, and a portion of the sensor 1402 may be located within the recess 1403 and another portion may be located outside of the recess 1403.

In one embodiment of the present invention, the sensor 1402 may be a touch sensor having elasticity.

In one embodiment of the invention, the outer shell 1401 of the failsafe device 1400 may include a non-cylindrical housing 1404, in fig. 14, the non-cylindrical housing 1404 being surrounded by the sensor 1402, namely: the sensor 1402 may be located on a non-cylindrical housing 1404. In one embodiment of the present invention, the sensor 1402, when mounted to the non-cylindrical housing 1404, may have an outer diameter that is larger than the outer diameter of the rest of the housing.

For the failsafe device 1400, a through hole may be provided in the protected component, with one end of the outer shell 1401 passing through the through hole and connecting to the base to complete the installation of the failsafe device 1400.

In one embodiment of the present invention, and with reference to FIG. 15, the above-described failsafe apparatus 1400 may be used to protect a device 1501 on a frame 601 of a CT machine. Because a portion of the housing is non-cylindrical (e.g., triangular, square, oval, etc.), only a single failsafe device 1400 needs to be installed to provide failsafe and alarm functionality for the device 1501.

Referring to fig. 16A, 16B, and 16C, in one embodiment of the invention, the

fault protection devices

1601, 1602, and 1603 may each include a housing 1604 and a sensor 1605, respectively. The housing 1604 may have a recess (obscured by the sensor 1605, not shown in fig. 16) disposed thereon, and a portion of the sensor 1605 may be disposed within the recess while another portion is disposed outside the recess.

In one embodiment of the invention, the sensor 1605 may be a touch sensor having elasticity.

In one embodiment of the present invention, the housing 1604 may comprise a first plane 1607 and a second plane 1608, the first plane 1607 and the second plane 1608 intersecting at an angle, and the first plane 1607 and the second plane 1608 may be provided with a recess, respectively.

In one embodiment of the present invention, the sensor 1605 can include a first sensing face 1609 and a second sensing face 1610. First sensing face 1609 can lie in a first plane 1607 and second sensing face 1610 can lie in a second plane 1608. In mounting the sensor 1605, a first sensing surface 1609 can be mounted to a recess in the first plane 1607 and a second sensing surface 1610 can be mounted to a recess in the second plane 1608. Thus, when the sensor is mounted to the housing, a portion of the sensor 1605 is located in a recess and another portion may protrude from a portion of the housing 1604 adjacent to the sensor 1605 in a direction perpendicular to the face of the sensor that contacts the protected device.

In one embodiment of the present invention, the first sensing surface 1609 and the second sensing surface 1610 can be connected by the buffer slot 1611, so that the damage of the connection between the two sensing surfaces caused by the compression of one sensing surface can be reduced.

In another embodiment of the present invention, the sensor may include a first sensor and a second sensor separated from each other, the first sensor may be located on a recess of the first plane, and the second sensor may be located on a recess of the second plane. Thus, when the sensor is mounted to the housing, a portion of the sensor is located in the recess and another portion may protrude from a portion of the housing adjacent the sensor in a direction perpendicular to the face of the sensor in contact with the protected device.

For the fault protection device 1603 shown in fig. 16C, the housing 1604 may include a third plane 1613 in addition to the first plane 1607 and the second plane 1608. Accordingly, referring to fig. 17, the sensor 1605 in the failsafe device 1603 includes a third sensing surface 1612 in addition to the first sensing surface 1609 and the second sensing surface 1610, and the third sensing surface 1612 may be located on a third plane 1613. Where the three sensing surfaces intersect, a buffer slot 1611 may be provided to mitigate damage to connections to other sensing surfaces caused by compression of one sensing surface.

Referring to FIG. 18, when the fail safe apparatus of FIG. 16 is installed, housing 1604 may be connected to base 1802. In an embodiment of the present invention, for the protected device 1801 shown in fig. 18, a failure protection device 1603 shown in fig. 16C may be respectively disposed on two opposite corners of the device, so that when the protected device 1801 slides on the plane of the base 1802 due to the loose mounting member, it will press the sensor on the failure protection device 1603, and the sensor can transmit a corresponding signal to perform a real-time alarm. Accordingly, a sensor data processing module (not shown) may be provided, which may be connected to the sensor, for receiving and processing data from the sensor.

Referring to fig. 19, when the sensor is squeezed to the same thickness as the housing portion around the sensor, the squeezing force of the protected device 1801 will be borne by the housing in the failsafe 1603, which prevents damage to the sensor caused by excessive squeezing thereof. After the protected device 1801 is reinstalled and fastened, the sensor can also recover its original shape and continue to function as a fail safe.

In summary, the

sensors

1601, 1602 and 1603 can be set at the corner positions of the protected device to provide fail-safe and real-time warning when the protected device moves on a plane.

In one embodiment of the present invention, referring to fig. 20A and 20B, the fault protection device 1603 may further comprise a detecting member 2001, one end of which is connected to the base 1802, and the detecting member 2001 may output a prompt when the connection between the fault protection device 1603 and the base 1802 is in place. In one embodiment of the invention, the detecting member 2001 may be a sensor. By means of the detector 2001, the operator can determine whether the failsafe device 1603 has been properly installed in place.

Referring to fig. 21, in one embodiment of the invention, multiple different types of fail-safe devices may be installed on the same protected device. As shown in fig. 21, for the protected device 2101, there may be installed one of the above-described failure protection devices 700 and one of the above-described failure protection devices 1603. In this way, the protected device 2101 may be protected from a plurality of possible directions of motion.

Referring to fig. 22, in an embodiment of the present invention, when the fail-safe apparatus of the present invention is applied to a component suspended from a rack 601 in a CT machine, different types of the fail-safe apparatus may be provided for different protected devices on the rack 601, such as: two of the above-mentioned failure protection apparatuses 700 may be provided for a bulb to form an axial failure protection assembly, two of the above-mentioned failure protection apparatuses 100 may be provided for a detector to form a vertical axial failure protection assembly, one of the above-mentioned failure protection apparatuses 1400 may be provided for some devices to form a non-circular failure protection assembly, two of the above-mentioned failure protection apparatuses 1603 may be provided for some devices to be protected which easily slide on a plane on which a base is located to form a block-type failure protection assembly, and the above-mentioned different types of failure protection apparatuses may be provided for some devices to be protected to form a hybrid failure protection assembly. In addition, a sensor data processing module 2201 may be further disposed on the rack, and is configured to receive data sent by the sensors on the failure protection devices and perform corresponding processing, such as: generate an alarm, etc.

A failsafe device for a medical instrument according to an embodiment of the invention has been described thus far. The failure protection device can generate an alarm in real time when the protected component is loosened, and the sensor and the shell of the failure protection device are reasonably designed, so that the sensor can be repeatedly utilized for many times and is not easy to be extruded and damaged.

Referring to fig. 23, a method of fail-safe for a medical device is provided, and fig. 23 shows an overall flow of an embodiment of a fail-safe method 2300 of the invention. Method 2300 can include steps 2301 to 2303.

In step 2301, status information of sensors in the failsafe device is read.

In one embodiment of the invention, the status information of the sensors in the failsafe device may be read by the sensor data processing module.

In step 2302, the status information of the sensing member in the fail safe device is read.

The detection member may be used to detect whether the fail-safe device is installed in place.

In one embodiment of the invention, the status information of the detection member in the fail safe device may be read by the sensor data processing module.

In step 2303, when the state information of the sensor or the state information of the detection piece is abnormal, the abnormal state information is output and an alarm is generated.

In one embodiment of the invention, whether the sensor is pressed by the protected device or not can be judged through the state information of the sensor, so that whether the protected device is loosened or not can be determined.

In one embodiment of the invention, it may be determined from the status information of the detector whether the detector is compressed by the housing of the fail safe device to determine whether the fail safe device has been installed in place.

When the state information of the detector is abnormal, the failure protection device is not installed in place, and the information can be output and an alarm can be given. Similarly, when the state information of the sensor is abnormal, the protected device corresponding to the sensor is indicated to be loose, and the information can be output and an alarm can be given.

In one embodiment of the present invention, when the status information of the detector is abnormal or the status information of the sensor is abnormal, the medical device may be also stopped to avoid a greater accident.

The failure protection method for the medical instrument according to the embodiment of the invention is described so far, and the method can detect the failure protection device which is not well installed in real time and can alarm the loosening of the protected device in real time.

The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A fail safe apparatus for a medical device, the medical device including a base for mounting a protected item, the fail safe apparatus comprising:

the shell is provided with a concave part and is connected with the base; and

a sensor, a portion of the sensor being located within the recess and another portion being located outside the recess.

2. The fail safe apparatus of claim 1 wherein the sensor protrudes from a portion of the housing adjacent the sensor in a direction perpendicular to a face of the sensor in contact with the protected device.

3. The fail safe apparatus of claim 1, further comprising:

and the sensor data processing module is connected with the sensor and used for receiving and processing the data from the sensor.

4. The fail safe apparatus of claim 1, further comprising:

and one end of the detection piece is connected to the base, and when the failure protection device is connected with the base in place, the detection piece outputs prompt information.

5. The fail safe apparatus of claim 1 wherein the device to be protected is provided with a through hole, the housing comprises at least two cylinders of unequal diameter, and one end of the housing passes through the through hole and is connected to the base.

6. The fail safe apparatus of claim 5 wherein the sensor is in the form of a ring positioned on any of the cylinders except the cylinder with the largest diameter.

7. The fail safe apparatus of claim 6, further comprising:

and the fixing piece is sleeved on the periphery of the shell and used for fixing the data wire of the sensor.

8. The fail safe apparatus of claim 6, further comprising:

and the locking piece is protruded out of the shell and used for preventing the protected device from moving along the axial direction of the shell.

9. The fail safe apparatus of claim 8 wherein the locking element further comprises:

the bolt protrudes out of the shell; and

and one end of the spring is connected in the shell, and the other end of the spring is connected with the lock tongue.

10. The fail safe apparatus of claim 5 wherein the sensor includes an annular sensing surface and an end sensing surface, the annular sensing surface being located on any of the cylinders other than the cylinder with the largest diameter.

11. The fail safe apparatus of claim 10 wherein the annular sensing surface and the end sensing surface are connected by a buffer slot.

12. The fail safe apparatus of claim 10 wherein the annular sensing surface is axially perpendicular to the end sensing surface.

13. The fail safe apparatus of any of claims 10-12, further comprising:

the gasket is provided with a groove and is sleeved on the shell; and

a nut screwed to the housing and abutting against the washer;

wherein a portion of the end sensing face is located within the recess.

14. The fail safe apparatus of claim 13, further comprising:

and the clamping ring is sleeved on the shell and abuts against the nut.

15. The fail safe apparatus of claim 5 wherein the sensor comprises a ring sensor and an end sensor, the ring sensor being located on any of the cylinders except the cylinder with the largest diameter.

16. The fail safe device of claim 15 wherein the annular sensor has an axial direction perpendicular to the end sensor.

17. The fail safe apparatus of claim 15 or 16, further comprising:

the gasket is provided with a groove and is sleeved on the shell; and

a nut screwed to the housing and abutting against the washer;

wherein a portion of the end sensor is located within the recess.

18. The fail safe apparatus of claim 17, further comprising:

and the clamping ring is sleeved on the shell and abuts against the nut.

19. The fail safe apparatus of claim 1 wherein the protected device is provided with a through hole and the housing comprises a non-cylindrical shell having one end extending through the through hole and connected to the base.

20. The fail safe device of claim 19 wherein the sensor is located on the non-cylindrical housing.

21. The fail safe apparatus of claim 1 wherein the housing comprises a first plane and a second plane, the first plane intersecting the second plane.

22. The fail safe apparatus of claim 21 wherein the sensor comprises a first sensing surface and a second sensing surface, the first sensing surface lying on the first plane and the second sensing surface lying on the second plane, the first sensing surface and the second sensing surface being connected by a buffer tank.

23. The fail safe apparatus of claim 22 wherein the sensor comprises a first sensor and a second sensor, the first sensor being located on the first plane and the second sensor being located on the second plane.

24. A method of fail-safe for a medical device, comprising:

reading status information of the sensor in the fail safe device of any one of claims 1-23;

reading state information of a detection piece in the failure protection device; and

and when the state information of the sensor or the state information of the detection piece is abnormal, outputting the abnormal state information and generating an alarm.