CN212346676U - Stepping device - Google Patents

Abstract

The utility model discloses a stepper, including a rotation connection guide pin bushing on the arm, it is connected with removal portion to slide and rotate in the guide pin bushing, the front end detachable of removal portion is connected with the installation department that is used for installing the probe, install on the guide pin bushing and be used for detecting removal portion and rotate and remove the detecting element of displacement volume. And triangular rotating grooves are formed in the two opposite side walls of the guide sleeve, and the mechanical arm is rotatably connected in the rotating grooves. And a driving piece for driving the moving part to move axially along the guide sleeve is arranged on the guide sleeve. The device has simple structure and convenient use.

Description

Stepping device

Technical Field

The utility model belongs to the technical field of medical equipment and specifically relates to a stepper is related to.

Background

With the development of imaging technology, especially the wide application of MRI examination technology, the detection rate of prostate cancer foci is also increasing in recent years, but the prostate needle biopsy is still the "gold standard" for diagnosing prostate cancer at present. The MRI examination has higher resolution ratio to the prostate tissue, high lesion detection rate and good guiding significance to puncture positioning. MRI and transrectal ultrasound (TRUS) technology are combined, namely MRI-TRUS fusion is used as a new technology for guiding prostate puncture biopsy, accurate positioning can be achieved through MRI, real-time positioning of ultrasound is combined, puncture accuracy can be improved, and misdiagnosis or missed diagnosis of prostate cancer caused by imaging positioning errors is reduced.

When detecting, insert the human body through handheld probe, because uncomfortable sense or painful, the patient can the shift position, lead to the initial good position of predetermineeing of probe to take place the deviation, but detecting system can not obtain the feedback of displacement again, lead to the image to compare and appear the error and not accurate, influence the testing result, consequently need develop one set of equipment that can be used for installing the probe to through the control probe that this equipment can be convenient, and can obtain the feedback of corresponding displacement change.

Disclosure of Invention

In view of the above, there is a need for a stepper which is convenient to operate, has a simple structure, and can feed back the displacement variation data of the probe in time.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a stepper, includes a rotation connection and rotates the guide pin bushing on the arm, it is connected with the removal portion to slide and rotate in the guide pin bushing, the front end detachable of removal portion is connected with the installation department that is used for installing the probe, install the detecting element who is used for detecting the removal portion and rotates and remove the displacement volume on the guide pin bushing.

Furthermore, triangular rotating grooves are formed in the two opposite side walls of the guide sleeve, and the mechanical arm is rotatably connected in the rotating grooves.

Furthermore, a driving piece for driving the moving part to move along the axial direction of the guide sleeve is arranged on the guide sleeve.

Furthermore, the driving part comprises a knob with a gear, and a rack meshed with the gear is arranged on the side wall of the moving part.

Further, the installation part comprises a base and a probe lock catch, a clamping groove is formed in the base, the rear end of the probe is placed in the clamping groove, and the probe is fixedly connected to the installation part through the probe lock catch.

Further, the installation department still includes a spacer, still be provided with the jack on the base, removal portion has the inserted bar that inserts the jack, the annular groove has on the front end week lateral wall of inserted bar, be provided with the spout of intercommunication jack on the base lateral wall, spacer sliding connection is in this spout to when making the spacer insert in the spout, in the recess of spacer bottom just embedding inserted bar.

Furthermore, the spout entrance is provided with the location pearl, the constant head tank of two locating holes of locating piece top end and intercommunication two locating holes is provided with to the depth of locating hole, the degree of depth of locating hole is greater than the degree of depth of constant head tank to when making the locating piece insert the spout, the locating pearl imbeds the locating hole of locating piece front end earlier, and along with the propulsion of locating piece, the location pearl slides to getting into in the locating hole of locating piece rear end along the constant head tank.

Further, the detection element is a magnetic rotary encoder.

Furthermore, a gear ring is arranged on the moving part, a measuring wheel meshed with the gear ring is connected in the guide sleeve in a rotating mode, and a first magnetic rotary encoder for detecting the rotating displacement of the measuring wheel is fixedly connected to the side of the measuring wheel.

Furthermore, a second magnetic rotary encoder for detecting the movement displacement of the moving part is fixedly connected in the guide sleeve.

Compared with the prior art, the utility model discloses following beneficial effect has: this device is through a stepper that has rotation and removal function, and the supplementary doctor that can be fine accomplishes controlling the probe to can in time obtain the displacement variation of probe, simple structure, convenient to use.

In order to make the aforementioned and other objects, features and advantages of the invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a moving part in an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of an installation part in an embodiment of the present invention.

Fig. 4 is a schematic structural view of the positioning plate and the sliding groove in the embodiment of the present invention.

Fig. 5 is a schematic structural view of the positioning plate according to the embodiment of the present invention.

In the figure: 1-guide sleeve, 11-rotation groove, 12-knob, 2-moving part, 21-rack, 22-inserted rod, 23-gear ring, 24-measuring wheel, 25-rotating part, 3-mounting part, 31-base, 32-probe lock catch, 33-jack, 34-sliding groove, 35-positioning ball, 36-positioning piece, 361-positioning hole, 362-positioning groove, 4-probe, 5-first magnetic rotary encoder and 6-second magnetic rotary encoder.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

As shown in fig. 1-2, a stepper includes a guide bush 1, a moving part 2, a mounting part 3, and a detecting element.

Guide pin bushing 1 rotates to be connected on a mechanical arm, and removal portion slides and rotate to be connected in the guide pin bushing, and installation department detachable installs in removal portion, and detecting element is used for detecting removal portion and rotates and remove the displacement volume. The moving part can rotate in the guide sleeve by directly rotating the moving part.

Two opposite side walls of the guide sleeve 1 are provided with triangular rotating grooves 11, and the mechanical arm is rotatably connected in the rotating grooves 11. The triangular rotation slot 11 enables the stepper to rotate at the same time as it is used to limit the stepper's angle of rotation.

The guide sleeve 1 is provided with a driving piece which drives the moving part to move along the axial direction of the guide sleeve. Preferably, the driving member comprises a knob 12 with a gear, and a rack 21 engaged with the gear is provided on a side wall of the moving portion 2. By rotating the knob 12, the drive moving part moves in the axial direction of the guide bush. The rear end of the moving part is fixedly connected with a rotating part 25, and the moving part is driven to rotate in the guide sleeve by rotating the rotating part.

As shown in fig. 3-5, the front end of the moving part 2 is detachably connected with a mounting part 3 for mounting the probe, the mounting part 3 comprises a base 31, a probe lock catch 32 and a positioning piece 36, the base 31 is provided with a clamping groove, the rear end of the probe 4 is placed in the clamping groove, and the probe lock catch 32 is locked to fix the probe 4 on the mounting part; the base 31 is also provided with an insertion hole 33, the front end of the moving part 2 is provided with an insertion rod 22 inserted into the insertion hole, the front end of the insertion rod 22 is provided with an annular groove, the side wall of the base 31 is provided with a sliding groove 34 communicated with the insertion hole, the positioning piece 36 is connected in the sliding groove 34 in a sliding manner, and when the positioning piece 36 is inserted into the sliding groove 34, the bottom of the positioning piece 36 is just embedded into the groove of the insertion rod, so that the insertion rod 22 is fixed to prevent the insertion rod from being separated from the mounting part 3; the entrance of spout 34 is provided with locating ball 35, the bottom end of spacer 36 is provided with the constant head tank 362 of two locating holes 361 and two locating holes of intercommunication, the degree of depth of constant head tank 362 is less than the degree of depth of locating hole 361, when spacer 36 inserts in spout 34, the locating hole of the first embedding front end of locating ball 365, along with the propulsion of spacer 36, locating ball 35 slides to the locating hole that gets into the rear end along constant head tank 362 in, thereby the whole spouts that send into of spacer, and the locating ball blocks the spacer, avoid the spacer to break away from the spout under no exogenic action.

In this embodiment, the detection element is a magnetic rotary encoder. The moving part 2 is provided with a gear ring 23, a measuring wheel 24 meshed with the gear ring is connected in the guide sleeve 1 in a rotating mode, and a first magnetic rotary encoder 5 for detecting the rotating displacement of the measuring wheel is fixedly connected to the side of the measuring wheel 24. A second magnetic rotary encoder 6 for detecting the displacement of the moving part 2 is fixedly connected in the guide sleeve 1.

Through this stepper, realized the quick installation dismantlement of probe to can rotate 360 degrees probes, and the linear motion probe, whole stepper installs and can realize the rotation from top to bottom and effect swing on the arm simultaneously, has realized multi freedom's use, has guaranteed the convenience that the probe used. Meanwhile, the position variation of the probe is fed back in time through the magnetic rotary encoder, so that the measurement result is more accurate.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed by the preferred embodiment, it is not limited to the present invention, and any person skilled in the art can make modifications or changes equivalent to the equivalent embodiments by utilizing the above disclosed technical contents without departing from the technical scope of the present invention, but all the modifications, changes and changes of the technical spirit of the present invention made to the above embodiments are also within the scope of the technical solution of the present invention.

Claims (10)

1. A stepper, characterized in that: the probe detection device comprises a guide sleeve which is rotatably connected to a mechanical arm, wherein a moving part slides in the guide sleeve and is rotatably connected with the guide sleeve, the front end of the moving part is detachably connected with an installation part for installing a probe, and a detection element for detecting the rotation and movement displacement of the moving part is arranged on the guide sleeve.

2. The stepper of claim 1, wherein: and triangular rotating grooves are formed in the two opposite side walls of the guide sleeve, and the mechanical arm is rotatably connected in the rotating grooves.

3. The stepper of claim 1, wherein: and a driving piece for driving the moving part to move axially along the guide sleeve is arranged on the guide sleeve.

4. The stepper of claim 3, wherein: the driving piece comprises a knob with a gear, and a rack meshed with the gear is arranged on the side wall of the moving part.

5. The stepper of claim 1, wherein: the installation department includes a base and probe hasp, is provided with the draw-in groove on the base, and the probe rear end is placed in this draw-in groove, through the probe hasp with probe fixed connection on the installation department.

6. The stepper of claim 5, wherein: the installation department still includes a spacer, still be provided with the jack on the base, removal portion has the inserted bar that inserts the jack, the annular groove has on the all lateral walls of front end of inserted bar, be provided with the spout of intercommunication jack on the base lateral wall, spacer sliding connection is in this spout to when making the spacer insert in the spout, in the recess of inserted bar is just inlayed to the spacer bottom.

7. The stepper of claim 6, wherein: the spout entrance is provided with the location pearl, the constant head tank of two locating holes of locating piece top end two locating holes of intercommunication are provided with to the terminal, the degree of depth of locating hole is greater than the degree of depth of constant head tank to when making the locating piece insert the spout, the locating hole of locating piece front end is embedded into earlier to the location pearl, along with the propulsion of locating piece, in the location pearl slides to the locating hole that gets into the locating piece rear end along the constant head tank.

8. The stepper of any of claims 1-7, wherein: the detection element is a magnetic rotary encoder.

9. The stepper of claim 8, wherein: the movable part is provided with a gear ring, the guide sleeve is rotationally connected with a measuring wheel meshed with the gear ring, and the side of the measuring wheel is fixedly connected with a first magnetic rotary encoder for detecting the rotation displacement of the measuring wheel.

10. The stepper of claim 8, wherein: and a second magnetic rotary encoder for detecting the movement displacement of the moving part is fixedly connected in the guide sleeve.

Images