CN111743563B - Detector drive for a nuclear medicine device and nuclear medicine device - Google Patents

Abstract

The invention discloses a detector driving device for nuclear medicine equipment and the nuclear medicine equipment, which have simple structure and convenient operation. The probe driving device includes: the device comprises a motor, a clutch and a speed reducer, wherein the moving end of the clutch is in transmission connection with the motor, the fixed end of the clutch is connected with a transmission shaft of the speed reducer, and the output end of the speed reducer is in transmission connection with a detector; further comprises: a pushing member; the cam is provided with a guide groove and a moving-out groove which are connected; and the shaking part can drive the pushing piece to push the moving end to move towards the motor when the shaking part slides to the second end of the guide groove, the moving end and the fixed end of the clutch are in a separated state when the shaking part slides to the second end of the guide groove, the detector can be driven to move far away from the human body by the shaking part after the shaking part slides to the second end of the guide groove, and the shaking part can be separated from the cam by moving out of the groove after the shaking part slides to the first end along the second end of the guide groove.

Description

Detector drives for nuclear medicine equipment and nuclear medicine equipment

Technical field

The present invention relates to the technical field of medical equipment, and in particular to a detector driving device and nuclear medicine equipment for nuclear medicine equipment.

Background technique

Emission tomography is a non-invasive nuclear medicine imaging method. Single Photon Emission Computed Tomography (SPECT, Single Photon Emission Computed Tomography) is a type of emission tomography and has been widely used in pre-clinical drug research and Clinical disease diagnosis.

During detection of existing nuclear medicine equipment, the output force of the motor is transmitted to the output end of the reducer through the clutch. The output end of the reducer drives the rotating screw to move the detector, and ultimately the motor output force drives the detector closer to the human body. Or stay away from the human body.

However, during actual operation, due to human operation, the detector will be too close to the human body and cause harm to the human body. After pressing the emergency button, the equipment will be powered off, the motor brake will be out of electrical control, and the motion system will be in a locked state. It is difficult to remove the human body from between the detector and the detection platform, and if the motor is started again, the possibility of the detector getting closer to the human body will increase, thereby increasing the damage to the human body.

Contents of the invention

As mentioned before, during actual operation, due to human operation, the detector will be too close to the human body and cause harm to the human body. At this time, after the emergency button is clicked, the equipment will be powered off, the motor brake will be disconnected from the electrical control, and the motion system will be locked. In this state, it is difficult to move the human body out from between the detector and the detection platform. If the motor is started again, the possibility of the detector getting closer to the human body will increase, thereby increasing the damage to the human body.

In view of the existing technical problems, the present invention proposes a detector driving device for nuclear medicine equipment, including: a motor, a clutch, and a reducer, wherein: the moving end of the clutch is drivingly connected to the motor, and the clutch The fixed end is connected to the transmission shaft of the reducer, and the output end of the reducer is used to drively connect the detector; the detector driving device also includes:

A pusher, one end of which is connected to the moving end of the clutch;

a cam, which is fixed to one end of the transmission shaft of the reducer away from the fixed end of the clutch,

And the cam is provided with connected guide grooves and removal grooves;

The rocking part selectively cooperates with the cam, wherein,

When the rocking portion slides along the first end of the guide groove toward the second end of the guide groove, the rocking portion can drive the pushing member to push the moving end of the clutch to move toward the motor. ,

When the rocking part slides to the second end of the guide groove, the moving end of the clutch and the fixed end of the clutch are in a separated state,

When the rocking part slides to the second end of the guide groove, the rocking part can drive the transmission shaft connected with the cam to rotate to drive the detector to move away from the human body.

After the rocking portion slides along the second end of the guide groove to the first end of the guide groove, the rocking portion can be separated from the cam through the removal groove, wherein,

The first end of the guide groove is connected to the third end of the removal groove.

As an aspect of the present invention, the guide groove is a spiral groove extending along the circumferential direction of the cam, and the arc of the guide groove extending is less than or equal to 180 degrees, and the first end of the guide groove is opposite to the first end of the guide groove. The second end is away from the motor.

As an aspect of the present invention, the removal groove is spiral-shaped, and the third end of the removal groove is closer to the motor than the fourth end of the removal groove.

As an aspect of the present invention, the rocking part includes a sleeve part that can be sleeved outside the cam and a rotating part connected to the sleeve part. The rotating part is provided with a device for moving away from the pushing member. The abutment portion with which one end of the moving end of the clutch abuts.

As an aspect of the present invention, the inner wall of the sleeve portion is provided with a slider that slides with the guide groove provided on the cam, or the guide groove is provided with a slider that is slidably connected with it, so The sleeve portion is provided with a groove connected with the sliding member.

As an aspect of the present invention, the rocking portion further includes a rocking handle, and the rocking handle is provided on the abutting portion or the rotating portion.

As an aspect of the present invention, the pushing member includes: a transmission member fixedly connected to the moving end of the clutch and a push rod connected to the transmission member.

As an aspect of the present invention, the reducer has a housing, and the pusher further includes: a support seat provided on the housing, the support seat is provided with a through hole, and the push rod at least partially limits located within the through hole.

As an aspect of the present invention, the transmission shaft of the reducer is a worm, and the reducer further includes a turbine connected to the worm.

The invention also provides nuclear medicine equipment, which includes: a frame and a detector, and also includes the detector driving device for nuclear medicine equipment described in any one of the above, wherein the motor in the detector driving device is fixed on the The rack.

Compared with the prior art, the present invention achieves the following technical effects:

1. Through the set cam structure, pusher and rocking part, the motor can be manually disconnected from the reducer. The transmission shaft of the manual drive reducer can only rotate in a certain direction, so that the detector can only move in the direction away from the human body. Move to avoid the phenomenon of re-pressing the human body caused by the reverse direction of shaking, and the operation is more convenient;

2. Through the structural settings of the guide groove and the removal groove, it is easy to avoid the phenomenon of re-pressing the human body caused by manual shaking direction reversal;

3. The slider or sliding piece is provided to facilitate the sliding connection between the rocking part and the cam, making installation easy;

4. Through the provided support seat and the through hole on it, it is convenient to limit the moving direction of the push rod and achieve better separation of the clutch.

Description of drawings

The drawings listed in the present invention are only used to better understand the technical solutions and advantages of the present invention, but do not constitute any limitation on the technical solutions of the present invention. in:

Figure 1 is a schematic structural diagram of a detector driving device for nuclear medicine equipment provided by the present invention;

Figure 2 is an angular schematic diagram of the cam in the detector driving device provided by the present invention;

Figure 3 is another schematic view of the cam in the detector driving device provided by the present invention;

Figure 4 is a schematic structural diagram of the rocking part provided by the present invention;

Figure 5 is a schematic structural diagram of the sliding member provided by the present invention.

Picture description:

1-Motor 2-Clutch 21-Fixed end 22-Moving end 3-Reducer 31-Transmission shaft 32-Output shaft 33-Casing 4-Pushing part 41-Transmission part 42-Push rod 43-Support 5-Cam 51 -Guide groove 511-First end 512-Second end 52-Removal groove 521-Third end 522-Fourth end 6-Pushing part 61-Sleeving part 611-Groove 62-Rotating part 63-Handle 7- Slider 71-positioning pin 72-screw

Detailed ways

The present invention will be further described in detail and completely below with reference to specific embodiments. The following description is merely exemplary in nature and is not intended to limit the disclosure, application, or uses.

In the description of this application, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood depending on the specific circumstances.

As mentioned above, due to human operation, the detector will be too close to the human body and cause harm to the human body. After pressing the emergency button, the equipment will be powered off, the motor brake will be out of electrical control, and the motion system will be in a locked state. At this time, the human body will be It is difficult to move out from between the detector and the detection platform, and if the motor is started again, the possibility of the detector getting closer to the human body will increase, thereby increasing the damage to the human body. In view of the existing technical problems, as shown in Figures 1, 2 and 3, the present invention proposes a detector driving device for nuclear medicine equipment, including: a motor 1, a clutch 2, and a reducer 3, wherein: the clutch The moving end 22 of 2 is connected to the motor 1, the fixed end 21 of the clutch 2 is connected to the transmission shaft 31 of the reducer 3, and the output end 32 of the reducer 3 is used to drive the detector; the detector driving device also includes:

Pushing member 4, one end of the pushing member 4 is connected to the moving end 22 of the clutch 2;

Cam 5, cam 5 is fixed to one end of the transmission shaft 31 of the reducer 3 away from the fixed end 21 of the clutch 2,

And the cam 5 is provided with connected guide grooves 51 and removal grooves 52;

The rocking part 6 selectively cooperates with the cam 5, wherein,

When the rocking part 6 slides along the first end 511 of the guide groove 51 toward the second end 512 of the guide groove 51, the rocking part 6 can drive the pushing member 4 to push the moving end 22 of the clutch 2 to move toward the motor 1.

When the rocking part 6 slides to the second end 512 of the guide groove 51, the moving end 22 of the clutch 2 and the fixed end 21 of the clutch 2 are in a separated state,

When the rocking part 6 slides to the second end 512 of the guide groove 51, the rocking part 6 can drive the transmission shaft 31 connected to the cam 5 to rotate to drive the detector to move away from the human body.

After the rocking part 6 slides along the second end 512 of the guide groove 51 to the first end 511 of the guide groove 51 , the rocking part 6 can be separated from the cam 5 by moving out of the groove 52 , wherein,

The first end 511 of the guide groove 51 is connected to the third end 521 of the removal groove 52 .

When the detector driving device of nuclear medicine equipment provided by the present invention is actually used, the moving end 22 and the fixed end 21 of the clutch 2 are in a connected state. At this time, the output force of the motor 1 will be transmitted to the detector through the moving end 22 of the clutch 2. The fixed end 21 of the clutch 2 is connected to the transmission shaft 31 of the reducer 3. At this time, the output force of the motor 1 is transmitted to the transmission shaft 31 of the reducer 3, and the transmission shaft 31 then transmits the output force to The output end 32 of the reducer 3, and finally the output end 32 of the reducer 3 will drive the detector connected to it to move and inspect the human body; before the test starts, during the test, or at the end of the test, due to lack of human operation experience or failure of the equipment itself For other reasons, the detector is too close to the human body. At this time, the operator needs to press the emergency button, the equipment is powered off, the motor 1 brake is out of electrical control, and the motion system is in a locked state. The operator manually operates the shaking part 6, and the shaking part 6 cooperates with the cam 5. When the rocking part 6 slides along the first end 511 of the guide groove 51 to the second end 512 of the guide groove 51, the rocking part 6 can drive the pushing member 4 to push the moving end 22 of the clutch 2 toward the motor. 1 moves, when the rocking part 6 slides to the second end 512 of the guide groove 51, the moving end 22 of the clutch 2 and the fixed end 21 of the clutch 2 are in a separated state. At this time, the motor 1 cannot transmit the output force to the deceleration even after starting. 3, if the operator operates the swinging part 6 in the correct direction, that is, after the swinging part 6 slides to the second end 512 of the guide groove 51, the swinging part 6 can drive the transmission shaft 31 connected to the cam 5 to rotate, so it can drive the detection If the device moves away from the human body, the human body will be out of danger and can be moved out more conveniently; if the operator operates the rocking part 6 in an incorrect direction, that is, when the rocking part 6 slides along the second end 512 of the guide groove 51 to the end of the guide groove 51 At the first end 511, only the rocking part 6 moves along the cam 5 at this time, and neither the pushing member 4 nor the transmission shaft 31 of the reducer 3 moves. If the rocking part 6 continues to be operated in the current direction, the rocking part 6 will move out along the The groove 52 moves out and separates from the cam 5 . When the operator operates the swinging part 6 in the correct direction and has safely removed the human body, the swinging part 6 can be operated in reverse. The swinging part 6 will move out along the removal groove 52 and then separate from the cam 5. After the swinging part 6 is removed Finally, due to the action of the spring in the moving end 22 of the clutch 2, the fixed end 21 and the moving end 22 of the clutch 2 will engage again, and the motor 1 can resume transmission connection with the reducer 3.

In summary, the detector driving device for nuclear medicine equipment provided by the present invention can manually disconnect the motor 1 from the reducer 3 and manually drive the reducer 3 through the cam 5 structure, the pusher 4 and the rocking part 6. The transmission shaft 31 can only rotate in a certain direction, so that the detector can only move in the direction away from the human body. Through the structural arrangement of the guide groove and the removal groove, it is easy to avoid the phenomenon of re-pressing the human body caused by manual shaking in the reverse direction. Operation More convenient.

It should be noted that in the above description: when the rocking part 6 slides along the first end 511 of the guide groove 51 toward the second end 512 of the guide groove 51 , the rocking part 6 can drive the pushing member 4 to push the moving end of the clutch 2 22 moves toward the motor 1. When the rocking part 6 slides to the second end 512 of the guide groove 51, the moving end 22 of the clutch 2 and the fixed end 21 of the clutch 2 are in a separated state. In this application, the moving end 22 and the clutch 2 are not described. 2 specifically defines when to separate. It may be that the moving end 22 and the fixed end 21 of the clutch 2 have separated before the rocking part 6 slides to the second end 512 of the guide groove 51. When the rocking part 6 slides to the second end 512 of the guide groove 51, When the second end 512 is reached, the moving end 22 of the clutch 2 and the fixed end 21 of the clutch 2 are still in a separated state. It is also possible that when the rocking part 6 slides to the second end 512 of the guide groove 51, the moving end 22 of the clutch 2 and the clutch 2 are still separated. The fixed end 21 of 2 is separated. Similarly, in the above description: when the rocking part 6 slides along the first end 511 of the guide groove 51 toward the second end 512 of the guide groove 51 , the rocking part 6 can drive the pushing member 4 to push the moving end 22 of the clutch 2 toward When the motor 1 moves, it may be that when the rocking part 6 starts to slide from the first end 511 of the guide groove 51 to the second end 512 of the guide groove 51 , the rocking part 6 can drive the pushing member 4 to push the moving end 22 of the clutch 2 to move. , it is also possible that the rocking part 6 can drive the pushing member 4 to push the moving end 22 of the clutch 2 to move only after the rocking part 6 slides along the first end 511 of the guide groove 51 to the second end 512 of the guide groove 51 for a while. In the application, this is not specifically limited.

The reducer 3 provided by the present invention can have various specific structures. In an optional embodiment, the transmission shaft 31 of the reducer 3 is a worm, and the reducer 3 also includes a turbine connected to the worm drive, and the turbine passes through the gear. Or the transmission rod or rotating screw is connected with the detector to realize the movement of the detector.

As shown in Figures 2 and 3, in a specific embodiment provided by the present invention, the guide groove 51 is a spiral groove extending along the circumferential direction of the cam 5, and the extending arc of the guide groove 51 is less than or equal to 180 degrees. The first end 511 is away from the motor 1 relative to the second end 512 of the guide groove 51 . When the swinging part 6 moves toward the second end 512 along the first end 511 , the swinging part 6 moves in a direction close to the motor 1 , thereby driving the pusher 4 to move.

In an optional embodiment, the maximum rotation angle of the cam 5 is 180°, the helical movement distance is 7mm, and the pushing member 42 is driven to translate 7mm. The tooth engagement height of the clutch 2 is 5mm, ensuring the separation of the fixed end 21 and the moving end 22 of the clutch.

In order to facilitate smooth connection between the removal groove 52 and the guide groove 51 , the removal groove 52 is spiral-shaped, and the third end 521 of the removal groove 52 is close to the motor 1 relative to the fourth end 522 of the removal groove 52 . So that when the rocking part 6 slides along the third end 521 of the removal groove 52 to the fourth end 522 of the removal groove 52 , it can be separated from the cam 5 .

There are many specific structures of the above-mentioned rocking part 6. Alternatively, as shown in Figure 4, the rocking part 6 includes a sleeve part 61 that can be sleeved on the outside of the cam 5 and a rotating part 62 connected to the sleeve part 61. The rotating portion 62 is provided with a contact portion for abutting against one end of the push rod 42 away from the moving end 22 of the clutch 2 . The rotating part 62 can be in the shape of a disk, and the diameter of the disk is relatively large, so that it can offset the pushing member 4. In this case, the contact part is arranged along the circumference of the disk-shaped rotating part 62, or the diameter of the disk can be opposite. Smaller, in this case, the contact portion is an additional protrusion provided along the circumference of the rotating portion 62 to facilitate offset with the push rod 42. The specific structure can be set by those skilled in the art according to actual needs.

In order to facilitate the sliding of the rocking part 6 along the guide groove 51 provided on the cam 5, in an optional embodiment, the inner wall of the sleeve part 61 is provided with a slider that slides with the guide groove 51 provided on the cam 5. The slider and the sleeve portion 61 have an integrated structure.

In another optional embodiment, as shown in FIGS. 4 and 5 , the guide groove 51 is provided with a sliding member 7 slidingly connected thereto, and the sleeve portion 61 is provided with a groove 611 connected to the sliding member 7 . The sliding member 7 includes a positioning pin 71 that is slidably engaged with the guide groove 51 , and a screw 72 that is connected to the positioning pin 71 and fixedly connected to the groove 611 provided on the sleeve portion 61 .

As shown in FIG. 4 , the rocking part 6 further includes a rocking handle 63 , which is provided on the abutting part or the rotating part 62 . To facilitate the operation of the operator, the specific setting position and structure of the crank handle 63 can be set in a relatively labor-saving position and in a relatively labor-saving structure according to the principle of lever balance.

As shown in FIG. 1 , in an optional embodiment provided by the present invention, the pushing member 4 includes: a transmission member 41 fixedly connected to the moving end 22 of the clutch 2 and a push rod 42 connected to the transmission member 41 . The transmission member 41 may be in a semi-arc shape and is buckled on the moving end 22 of the clutch 2 and fixedly connected to the moving end 22 .

As shown in Figure 1, the reducer 3 has a housing 33, and the pushing member 4 also includes: a support seat 43 provided on the housing 33. The support seat 43 is provided with a through hole, and the push rod 42 is at least partially limited in the through hole. . Through the support seat 43 and the through hole provided therein, the moving direction of the push rod 42 can be easily restricted, and the clutch 2 can be separated better.

The invention also provides nuclear medicine equipment, which includes: a frame and a detector, and also includes the detector driving device for nuclear medicine equipment described in any one of the above, wherein the motor 1 in the detector driving device is fixed on frame.

The nuclear medicine equipment provided by the present invention has better operational convenience and reduces harm to the human body during operation due to the above-mentioned detector driving device.

The above-mentioned specific embodiments do not constitute a limitation on the scope of the present invention. It will be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims (9)

1. A probe drive apparatus for a nuclear medicine device, comprising: motor, clutch, reduction gear, wherein: the movable end of the clutch is in transmission connection with the motor, the fixed end of the clutch is connected with the transmission shaft of the speed reducer, and the output end of the speed reducer is used for being in transmission connection with the detector; the detector driving device is characterized by further comprising:

one end of the pushing piece is connected with the moving end of the clutch;

the cam is fixed at one end of the transmission shaft of the speed reducer, which is far away from the fixed end of the clutch, and the cam is provided with a guide groove and a moving-out groove which are connected with each other; the guide groove is a spiral groove extending along the circumferential direction of the cam, the extending radian of the guide groove is less than or equal to 180 degrees, and the first end of the guide groove is far away from the motor relative to the second end of the guide groove;

a rocking part which is matched with the cam or separated from the cam, wherein,

when the shaking part slides along the first end of the guide groove to the second end of the guide groove, the shaking part can drive the pushing piece to push the moving end of the clutch to move towards the motor,

when the shaking part slides to the second end of the guide groove, the moving end of the clutch and the fixed end of the clutch are in a separated state,

after the shaking part slides to the second end of the guide groove, the shaking part can drive the transmission shaft connected with the cam to rotate so as to drive the detector to move away from the human body,

after the shaking part slides along the second end of the guide groove to the first end of the guide groove, the shaking part can be separated from the cam through the removal groove, wherein,

the first end of the guide groove is connected with the third end of the moving-out groove.

2. The sonde drive of claim 1, wherein the removal slot is helical and a third end of the removal slot is positioned adjacent the motor relative to a fourth end of the removal slot.

3. The probe driving device according to claim 1, wherein the rocking part includes a fitting part that is fitted over the cam, and a rotating part that is connected to the fitting part, and the rotating part is provided with an abutting part for abutting against an end of the pushing member that is away from the moving end of the clutch.

4. The detector driving apparatus according to claim 3, wherein a slider is provided on an inner wall of the housing portion to slidably fit with a guide groove provided on the cam, or,

the guide groove is internally provided with a sliding piece in sliding connection with the guide groove, and the sleeving part is provided with a groove connected with the sliding piece.

5. The detector driving device according to claim 3, wherein the rocking portion further includes a crank provided to the abutting portion or the rotating portion.

6. The probe drive apparatus of claim 1 wherein said pusher member comprises: the transmission piece is fixedly connected with the movable end of the clutch, and the push rod is connected with the transmission piece.

7. The sonde drive of claim 6, wherein said decelerator has a housing, said pusher member further comprising: the supporting seat is arranged on the shell, a through hole is formed in the supporting seat, and the push rod is at least partially positioned in the through hole.

8. The sonde drive of any one of claims 1 to 7, wherein the drive shaft of the decelerator is a worm, and the decelerator further includes a worm gear drivingly connected to the worm.

9. A nuclear medicine device comprising: a gantry and a detector, characterized by further comprising a detector driving device for a nuclear medicine equipment according to any one of claims 1-8, wherein a motor in the detector driving device is fixed to the gantry.