CN111911611B

CN111911611B - Transmission device, X-ray beam limiter and mobile C-arm X-ray detection equipment

Info

Publication number: CN111911611B
Application number: CN202010870621.0A
Authority: CN
Inventors: 王杰杰; 高阳阳
Original assignee: Feirui Medical Instrument Jiaxing Co ltd
Current assignee: Feirui Medical Instrument Jiaxing Co ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2025-07-15
Anticipated expiration: 2040-08-26
Also published as: CN111911611A

Abstract

The present invention provides a transmission device, an X-ray beam limiter and an X-ray detection device. The beam limiter includes a rotating top cover, a first rotating gasket, a first transmission gear, a second rotating gasket, a second transmission gear, a third rotating gasket, a third transmission gear and a lead blade layer from top to bottom; the rotating top cover, the first rotating gasket, the first transmission gear, the second rotating gasket, the second transmission gear, the third rotating gasket and the third transmission gear are all hollow and coaxial to jointly define an X-ray exit channel; the lead blade layer includes a first lead blade and a second lead blade, the first lead blade is connected to the first transmission gear, and the second lead blade is connected to the second transmission gear; the upper surface of at least one of the first transmission gear, the second transmission gear and the third transmission gear is provided with a 3400A friction reduction coating. The present invention can effectively reduce the friction coefficient between gears, reduce equipment wear, improve the control accuracy of the beam limiter, and can extend the equipment life in an oil-free environment and reduce costs.

Description

Transmission device, X-ray beam limiter and movable C-arm X-ray detection equipment

Technical Field

The invention relates to the technical field of medical diagnosis and treatment equipment, in particular to a transmission device, an X-ray beam limiter and mobile C-arm X-ray detection equipment.

Background

The X-ray diagnostic technique is the earliest non-invasive visceral examination technique in the world. Because the X-rays pass through the human body, the absorption degree of different parts is different, for example, the X-rays absorbed by bones are more than the X-rays absorbed by muscles, so that the different X-rays pass through different parts of the human body, the different X-rays carry the density distribution information of all parts of the human body, and the intensity of fluorescence or sensitization caused on a fluorescent screen or a photographic film is greatly different, so that shadows with different densities are displayed on the fluorescent screen or the photographic film (after development and fixation). According to the contrast of shade and shade, the clinical manifestation, the test result and the pathological diagnosis are combined to judge whether a certain part of the human body is normal or not. With the continuous improvement of medical diagnosis level and the increasing attention of people to health, the application of X-ray diagnosis technology is becoming wider and wider.

The MOBILE C-ARM X-ray detection device is a common X-ray diagnosis device (English name is MOBILE C-ARM X-RAY TV SYSTEM), and the product is suitable for monitoring X-ray fluoroscopy and direct X-ray photography in a surgical operating room. The X-ray beam limiter is an important component of the system, and limits the passing range of X-rays through the X-ray beam limiter, so that the damage of redundant X-rays to a human body is avoided. Because the X-ray beam limiter of the movable C-arm X-ray detection equipment is a built-in product and moves frequently, the requirement on a transmission device of the movable C-arm X-ray detection equipment is high. However, the transmission device of the X-ray beam limiter of the existing movable C-arm X-ray detection equipment is large in abrasion caused by friction among components, so that the transmission position is offset and even faults which cannot be transmitted to a preset position frequently occur, the X-ray beam limiter cannot accurately limit an X-ray emergent window, the transmission device is usually lubricated and maintained by adopting lubricating oil, the pollution of the X-ray beam limiter is easily caused, and the equipment maintenance cost is high.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a transmission device, an X-ray beam limiter, and a mobile C-arm X-ray detection apparatus, which are used for solving the problems that the transmission device of the X-ray beam limiter of the existing mobile C-arm X-ray detection apparatus is worn greatly due to friction between components, so that the transmission position is deviated and even the transmission cannot be performed to a predetermined position at all, which causes frequent failure, and the X-ray beam limiter cannot precisely define an X-ray exit window, and the transmission device is usually lubricated and maintained by using lubricating oil, which easily causes pollution of the X-ray beam limiter, high maintenance cost of the apparatus, and the like.

To achieve the above and other related objects, the present invention provides a transmission device, which includes a plurality of transmission gears stacked up and down, a rotating backing ring, and a motor for driving the transmission gears, wherein the rotating backing ring is correspondingly disposed between every two transmission gears, the motor is connected with the transmission gears, and 3400A antifriction coating is disposed on the upper surface of the transmission gears.

The invention further provides an X-ray beam limiter which comprises a rotary top cover, a first rotary backing ring, a first transmission gear, a second rotary backing ring, a second transmission gear, a third rotary backing ring, a third transmission gear and a lead leaf layer from top to bottom, wherein the rotary top cover, the first rotary backing ring, the first transmission gear, the second rotary backing ring, the second transmission gear, the third rotary backing ring and the third transmission gear are hollow and coaxial to jointly define an X-ray emergent channel, the lead leaf layer comprises a first lead leaf and a second lead leaf, the first lead leaf is connected with the first transmission gear through a first connecting piece, the second lead leaf is connected with the second transmission gear through a second connecting piece and used for changing the position of the first lead leaf and/or the second lead leaf under the driving of the first transmission gear and/or the second transmission gear, and therefore the size of the X-ray emergent channel is changed, and at least one surface of the first transmission gear, the second transmission gear and the third transmission gear is provided with a 3400 antifriction layer.

Optionally, the top surfaces of the first, second and third transmission gears are all provided with the 3400A antifriction coating.

Optionally, the 3400A antifriction coating has a thickness of 5-20 μm and a friction coefficient of 0.06-0.1.

Optionally, the first, second and third rotary backing rings each comprise a POM backing ring.

Optionally, the X-ray beam limiter comprises 3 driving motors, and the 3 driving motors are respectively connected with the first transmission gear, the second transmission gear and the third transmission gear.

Optionally, the X-ray beam limiter further comprises a sliding block, and the sliding block is connected with the third transmission gear and the lead leaf layer and is used for changing the angle of the lead leaf layer through the third transmission gear.

Optionally, the first connecting piece includes sheet metal component and connecting rod, be provided with the sliding tray on the third drive gear, the sheet metal component with first plumbous leaf is connected, connecting rod one end with the sheet metal component is connected, and the other end passes the sliding tray upwards extends to with first drive gear is connected, the structure of second connecting piece is the same with the structure of first connecting piece.

Optionally, the first transmission gear, the second transmission gear and the third transmission gear are all cylindrical gears.

The invention also provides a movable C-arm X-ray detection device, which comprises a bulb tube and the X-ray beam limiter in any scheme, wherein the bulb tube is positioned above the X-ray beam limiter and corresponds to the X-ray emergent channel.

As described above, the X-ray beam limiter of the invention is characterized in that a plurality of transmission gears and a plurality of rotary backing rings are vertically stacked by an improved structural design, and 3400A antifriction coating is arranged on the upper surface of the transmission gears, so that the friction coefficient between gears can be effectively reduced, the equipment abrasion is reduced, the control precision of the X-ray beam limiter is improved, the service life of the equipment can be prolonged in an oilless environment, and the cost is reduced. According to the movable C-arm X-ray detection device based on the X-ray beam limiter, the emergent range of X-rays is accurately controlled through the X-ray beam limiter, the damage of the X-rays to a human body is reduced to the greatest extent, and the service life can be remarkably prolonged.

Drawings

Fig. 1 shows a schematic structure of an X-ray beam limiter according to the present invention.

Fig. 2 shows an exploded view of fig. 1.

Description of element reference numerals

11-Rotating top cover, 12-first rotating backing ring, 13-first transmission gear, 14-second rotating backing ring, 15-second transmission gear, 16-third rotating backing ring, 17-third rotating gear, 171-sliding groove, 18-first lead leaf, 19-second lead leaf, 20-first connecting piece, 21-rotating supporting structure, 3-X-ray outgoing channel

Detailed Description

Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.

Please refer to fig. 1-2. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the invention, are not intended to be critical to the essential characteristics of the invention, but are intended to fall within the spirit and scope of the invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.

Example 1

The invention provides a transmission device (the device is a part of fig. 1 and 2, so please refer to fig. 1 and 2), the transmission device comprises a plurality of transmission gears (such as 2 or more than 2) which are arranged in a vertically stacked way, a rotary backing ring and a motor for driving the transmission gears, the rotary backing ring is correspondingly arranged between every two transmission gears, the motor is connected with the transmission gears, and 3400A antifriction coating is arranged on the upper surface of the transmission gears. The volume of whole transmission can effectively be reduced in range upon range of setting from top to bottom in each structural layer, sets up rotatory backing ring and transmission gear's upper surface setting 3400A antifriction coating between transmission gear, can effectively reduce the coefficient of friction between the gear, reduces friction loss, and whole transmission can use in oilless environment (need not to use lubricating oil lubrication promptly), can effectively reduce the pollution. The service life of the device based on the transmission device can be greatly prolonged, and the cost can be effectively reduced.

As an example, the structures of the plurality of transmission gears may be identical or not identical. When the number of the transmission gears is two, the number of the rotation backing rings is at least one, when the number of the transmission gears is three, the number of the rotation backing rings is at least two, when the number of the transmission gears is 4, the number of the rotation backing rings is at least 3, and so on, namely, at least the rotation backing rings are arranged between every two adjacent transmission gears, the thicknesses of different rotation backing rings can be the same or different, the sizes of the rotation backing rings are matched with the corresponding transmission gears, but the transmission of the transmission gears is not influenced (the rotation backing rings are only not covered on tooth surfaces of peripheral gear rings of the gears). The plurality of transmission gears can be driven by the same or different motors. The 3400A antifriction coating is provided on a surface of one or more of the plurality of transmission gears, preferably all of the surfaces of the transmission gears are provided with the 3400A antifriction coating to minimize friction. The 3400A antifriction coating can be a nickel-phosphorus Teflon coating, such as Molykote 3400A coating provided by the Dow Corning company, not only can have good lubrication effect, but also can effectively prevent corrosion of gears. In a further example, the 3400A friction reducing coating has a thickness of 5-20 μm, more preferably a coefficient of friction of 0.06-0.1. The working temperature of the 3400A antifriction coating (i.e. the working temperature of the transmission) is preferably-220 ℃ to 400 ℃.

As an example, the rotating grommet is preferably a POM grommet but not limited thereto. The POM backing ring is used for improving the service life of the whole transmission device due to the excellent friction resistance of POM materials, and avoiding pollution caused by abrasion.

The transmission of the invention can be used in a variety of devices, such as the following X-ray beam limiter, based on the specific application of the transmission.

Example two

As shown in fig. 1 and 2, the present invention provides an X-ray beam limiter, which includes a rotary top cover 11, a first rotary backing ring 12, a first transmission gear 13, a second rotary backing ring 14, a second transmission gear 15, a third rotary backing ring 16, a third transmission gear 17 (i.e. the X-ray beam limiter substantially includes the transmission device in the first embodiment) and a lead leaf layer (for convenience of support, a fixing seat may be further disposed between the third transmission gear 17 and the lead leaf layer), and the third transmission gear 17 is fixed on the fixing seat); the rotary top cover 11, the first rotary backing ring 12, the first transmission gear 13, the second rotary backing ring 14, the second transmission gear 15, the third rotary backing ring 16 and the third transmission gear 17 are hollow and coaxial to jointly define an X-ray emergent channel 3, the X-ray emergent channel 3 is a passing path of X-rays, X-rays emitted by a bulb arranged at the top of the X-ray beam limiter pass through the X-ray emergent channel 3 and reach a preset checking position (such as a focus part of a human body) through constraint adjustment of a lead leaf layer at the bottom, the lead leaf layer comprises a first lead leaf 18 and a second lead leaf 19, the first lead leaf 18 and the second lead leaf 19 are positioned on the same horizontal plane, the first lead leaf 18 is connected with the first transmission gear 13 through a first connecting piece 20, the second lead leaf 19 is connected with the second transmission gear 15 through a second connecting piece, and is used for changing the first lead leaf 18 and/or the second lead leaf 19 under the driving of the first transmission gear 13 and/or the second transmission gear 15, thereby changing the size of the X-ray exit channel 3 (i.e., changing the relative positions of the first lead blade 18 and the second lead blade 19 by the driving of the first transmission gear 13 and/or the second transmission gear 15, when the two lead blades are close to each other, the corresponding X-ray exit channel 3 is blocked by the lead blade at the bottom, so that the actual X-ray exit range decreases, whereas when the two lead blades are distant from each other, the actual X-ray exit range increases), and the upper surface of at least one of the first transmission gear 13, the second transmission gear 15, and the third transmission gear 17 is provided with 3400A antifriction coating. According to the X-ray beam limiter, the plurality of transmission gears and the plurality of rotary backing rings are vertically stacked through the improved structural design, the 3400A antifriction coating is arranged on the upper surface of the transmission gears, so that the friction coefficient between gears can be effectively reduced, friction loss is reduced, the control precision of the X-ray beam limiter is improved, lubricating oil is not required to be used for lubrication, the service life of equipment can be prolonged in an oilless environment, pollution can be effectively reduced, and cost is reduced. The X-ray beam limiter is small in structure, convenient to install and detach and capable of being effectively used in various X-ray detection devices needing to be moved frequently.

It should be specifically noted that, in this specification, descriptions like "first" and "second" are introduced for convenience of description only and are not meant to be limiting in nature, for example, the transmission gear located at the lowermost position may be defined as "first" and the transmission gear located at the uppermost position may be defined as "second".

As an example, the X-ray beam limiter further comprises a rotary support structure 21, and the rotary support structure 21 comprises two symmetrically distributed arc-shaped columns (not separately labeled), and the circumferences of the inner arcs of the two arc-shaped columns correspond to the X-ray exit channel 3. Specifically, the upper surface of the arc-shaped column is fixed to the rotary top cover 11 by a fastener such as a screw, and the lower surface of the arc-shaped column is connected to the third transmission gear 17 (preferably, the arc-shaped column extends downward to the surface of the third transmission gear 17). The first and second drive gears 13, 15 rotate about the arcuate posts to ensure that their rotation does not shift.

The 3400A antifriction coating is arranged on the upper surface of any one of the first transmission gear 13, the second transmission gear 15 and the third transmission gear 17, so that friction loss can be effectively reduced. In a preferred example, the top surfaces of the first transmission gear 13, the second transmission gear 15 and the third transmission gear 17 are provided with the 3400A antifriction coating to reduce friction coefficient in the middle of the gears to the greatest extent and reduce friction loss. Of course, in other examples, the 3400A antifriction coating may be disposed on the lower surface of the corresponding transmission gear, which is not strictly limited in this embodiment. The 3400A antifriction coating may be formed on the surface of the corresponding transmission gear directly through a coating process or the like, or may be formed on the surface of the corresponding gear through a film pasting process or the like, which is not strictly limited in this embodiment.

The thickness of the 3400A antifriction coating needs to be carefully designed, and the thickness is too thin to achieve a better effect of reducing the friction coefficient, and the thickness is too thick, because the attribute of the material of the thickness can lead to the reduction of the transmission flexibility of the transmission gear. The inventors have found through long-term experiments that when the thickness of the 3400A antifriction coating is 5-20 μm (including the end point values, unless otherwise specified, the end point values are included in the numerical range in this embodiment, and are not separately described), the preferred friction coefficient is 0.06-0.1. The working temperature of the 3400A antifriction coating (namely the working temperature of the X-ray beam limiter) is preferably-220 ℃ to 400 ℃.

As an example, the first rotary backing ring 12, the second rotary backing ring 14 and the third rotary backing ring 16 all include POM backing rings, and are straight-leaf rotary backing rings, and the backing rings made of POM material are helpful for prolonging the service life of the backing rings and avoiding pollution caused by abrasion of the backing rings.

The X-ray beam limiter of the present embodiment is preferably automatically controlled. Thus, as an example, the first transmission gear 13, the second transmission gear 15 and the third transmission gear 17 are all driven by motors. In a preferred example, the X-ray beam limiter comprises 3 driving motors, and the 3 driving motors are respectively connected with the first transmission gear 13, the second transmission gear 15 and the third transmission gear 17. Of course, in other examples, different transmission gears may be driven by the same motor, and in this embodiment, the driving is not strictly limited, but the driving is preferably independent, so that the control accuracy and speed can be improved.

As an example, the X-ray beam limiter further comprises a slider connected to the third transmission gear 17 and the lead blade layer (preferably to both the first lead blade 18 and the second lead blade 19) for changing the angle of the lead blade layer by the third transmission gear 17. Specifically, the sliding block moves under the drive of the third transmission gear 17, thereby driving the movement of the lead blade layer to change the position of the lead blade layer with respect to the X-ray exit passage 3.

As an example, the first connecting member 20 includes a sheet metal part and a connecting rod, the third transmission gear 17 is provided with a sliding groove 171, the sheet metal part is connected with the first lead blade 18, one end of the connecting rod is connected with the sheet metal part, and the other end of the connecting rod passes through the sliding groove 171 and extends upward to be connected with the first transmission gear 13 (the inner side of the first transmission gear 13 is provided with a groove structure for accommodating the connecting rod), when the first transmission gear 13 drives the first lead blade 18 to move, the connecting rod slides in the sliding groove 171, so that the control precision of the lead blade can be improved through the sliding groove 171. The second connecting member is preferably the same as the first connecting member 20 in structure, and includes a sheet metal member and a connecting rod, so that two sliding grooves 171 are provided on the third transmission gear 17, except that the second lead blade 19 is connected to the second transmission gear 15 through the second connecting member, so that the other end of the connecting rod connected to the second lead blade 19 passes through the sliding groove in the third transmission gear 17 and extends upward to be connected to the second transmission gear 15 (the inside of the second transmission gear 15 is provided with a groove structure for accommodating the connecting rod).

As an example, the first transmission gear 13, the second transmission gear 15 and the third transmission gear 17 are all cylindrical gears, and the heights of the transmission gears may be set as required. In this embodiment, as an example, the heights and specific structures of the first transmission gear 13 and the second transmission gear 15 are identical, and the height of the third transmission gear 17 is higher than the heights of the first transmission gear 13 and the second transmission gear 15.

The X-ray beam limiter can be used for various X-ray detection equipment needing to control the X-ray emergent range through lead leaves, can effectively reduce friction loss and prolong the service life of the equipment, and is particularly suitable for mobile C-arm X-ray detection equipment. The X-ray beam limiter of the movable C-arm X-ray detection device is a built-in product, the movement is frequent, the requirement on a transmission device of the X-ray beam limiter is high, and the X-ray beam limiter can fully meet the requirement, so the invention also provides the movable C-arm X-ray detection device, which comprises a bulb tube and the X-ray beam limiter in any scheme, wherein the bulb tube is positioned above the X-ray beam limiter and corresponds to the X-ray emergent channel. Specifically, the X-ray beam limiter may be located in a housing, an opening is formed in an upper surface of the housing, the opening corresponds to the X-ray exit channel vertically, and the bulb tube may be fixed on the housing through a connecting flange and a positioning flange and is correspondingly located right above the X-ray exit channel. Except for the difference of the structures of the X-ray beam limiters, the movable C-arm X-ray detection device is not greatly different from the prior art, so the movable C-arm X-ray detection device is not developed in detail. According to the movable C-arm X-ray detection device based on the X-ray beam limiter, the emergent range of X-rays is accurately controlled through the X-ray beam limiter, the damage of the X-rays to a human body is reduced to the greatest extent, and the service life can be remarkably prolonged.

In summary, the X-ray beam limiter of the invention stacks a plurality of transmission gears and a plurality of rotary backing rings up and down through an improved structural design, and 3400A antifriction coating is arranged on the upper surface of the transmission gears, so that the friction coefficient between gears can be effectively reduced, equipment abrasion is reduced, the control precision of the X-ray beam limiter is improved, the service life of the equipment can be prolonged in an oilless environment, and the cost is reduced. The X-ray beam limiter is small in structure and very convenient to install and detach, for example, when the X-ray beam limiter is installed, all structural layers are installed in sequence, and the X-ray beam limiter can be effectively used in various X-ray detection equipment needing frequent moving operation. According to the movable C-arm X-ray detection device based on the X-ray beam limiter, the emergent range of X-rays is accurately controlled through the X-ray beam limiter, the damage of the X-rays to a human body is reduced to the greatest extent, and the service life can be remarkably prolonged. The transmission device can be widely applied to various devices needing transmission, and has great utilization value. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. An X-ray beam limiter, characterized in that: the X-ray beam limiter includes a rotating top cover, a first rotating gasket, a first transmission gear, a second rotating gasket, a second transmission gear, a third rotating gasket, a third transmission gear and a lead blade layer from top to bottom; the rotating top cover, the first rotating gasket, the first transmission gear, the second rotating gasket, the second transmission gear, the third rotating gasket and the third transmission gear are all hollow and coaxial to jointly define an X-ray exit channel; the lead blade layer includes a first lead blade and a second lead blade, the first lead blade is connected to the first transmission gear through a first connecting member, and the second lead blade is connected to the second transmission gear through a second connecting member, for The position of the first lead blade and/or the second lead blade is changed under the drive of the first transmission gear and/or the second transmission gear, thereby changing the size of the X-ray exit channel; the upper surface of at least one of the first transmission gear, the second transmission gear and the third transmission gear is provided with a 3400A friction-reducing coating; the first connecting member includes a sheet metal member and a connecting rod, and a sliding groove is provided on the third transmission gear, the sheet metal member is connected to the first lead blade, one end of the connecting rod is connected to the sheet metal member, and the other end passes through the sliding groove and extends upward to be connected to the first transmission gear; the structure of the second connecting member is the same as that of the first connecting member.

2. The X-ray beam limiter according to claim 1, characterized in that the thickness of the 3400A anti-friction coating is 5 to 20 μm and the friction coefficient is 0.06 to 0.1.

3 . The X-ray beam limiter according to claim 1 , wherein the first rotating gasket, the second rotating gasket and the third rotating gasket all comprise POM gaskets.

4 . The X-ray beam limiter according to claim 1 , characterized in that the X-ray beam limiter comprises three drive motors, and the three drive motors are respectively connected to the first transmission gear, the second transmission gear and the third transmission gear.

5. The X-ray beam limiter according to claim 1 is characterized in that: the X-ray beam limiter also includes a sliding block, the sliding block is connected to the third transmission gear and the lead leaf layer, and is used to change the angle of the lead leaf layer through the third transmission gear.

6 . The X-ray beam limiter according to claim 1 , wherein the first transmission gear, the second transmission gear and the third transmission gear are all cylindrical gears.

7. A mobile C-arm X-ray detection device, characterized in that: the mobile C-arm X-ray detection device comprises a tube and an X-ray beam limiter as described in any one of claims 1 to 6, the tube is located above the X-ray beam limiter and corresponds to the X-ray exit channel.