CN212326443U

CN212326443U - Prostate detection device

Info

Publication number: CN212326443U
Application number: CN202021681080.9U
Authority: CN
Inventors: 钟鹭峰; 叶章群; 黄枢; 邢金春; 章慧平; 陈斌; 何玮; 林丽云; 游东岩
Original assignee: Xiamen Linghui Medical Technology Co ltd
Current assignee: Linghui medical technology (Wuhan) Co.,Ltd.
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-01-12
Anticipated expiration: 2030-08-13

Abstract

The utility model discloses a prostate detection device, include elevating system, stepper, have the arm of rotation and flexible function, the arm rotates to be connected on elevating system, stepper rotates to be connected on the arm, stepper includes a rotatable removal portion, removal portion tip fixedly connected with is used for installing the installation department of probe, be provided with the detecting element who is used for monitoring its rotation and flexible displacement volume on the arm, also be provided with the detecting element who is used for monitoring its rotation and removes the displacement volume on the stepper. The device can move along with the movement of a patient, synchronously feeds back the variable quantity of the displacement, simultaneously keeps the constant pressure of the ultrasonic probe on the prostate, maximally reduces the image deformation, and ensures the accuracy of the detection result.

Description

Prostate detection device

Technical Field

The utility model belongs to the technical field of medical equipment and specifically relates to a prostate detection device 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 the detection is carried out, the probe is inserted into a human body, and due to discomfort or pain, the patient can move the position, so that the deviation occurs to the initial preset position of the probe, but the detection system cannot obtain the feedback of displacement, so that the image comparison has errors and inaccuracy, the detection result is influenced, meanwhile, the pressure of the probe on the gland cannot be kept constant, the deformation of the prostate is easily caused to obtain an inaccurate image, and therefore, a set of new detection device needs to be developed, and the defects can be effectively avoided.

Disclosure of Invention

In view of the above, there is a need for a prostate gland detection device that can follow the patient to move synchronously and feed back the displacement variation data instantly, and maintain the constant pressure of the ultrasound probe to the prostate gland, and minimize the image deformation.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a prostate detection device, includes elevating system, stepper, has the arm of rotation and flexible function, the arm rotates to be connected on elevating system, stepper rotates to be connected on the arm, stepper includes a rotatable removal portion, removal portion tip fixedly connected with is used for installing the installation department of probe, be provided with the detecting element who is used for monitoring its rotation and flexible displacement amount on the arm, the last detecting element who is used for monitoring its rotation and removal displacement amount that also is provided with of stepper.

Furthermore, the arm includes first joint and second joint, the rotation of first joint rear end area locking function is connected on elevating system, the rotation of second joint rear end area locking function is connected on first joint front end, the second joint includes a flexible portion that can rotate from top to bottom.

Furthermore, the first joint comprises a first joint arm and a second joint arm, the rear end of the first joint arm is connected to the lifting mechanism in a rotating mode and provided with a locking function, the rear end of the second joint arm is connected to the front end of the first joint arm in a rotating mode and provided with a locking function, and the rear end of the second joint is connected to the front end of the second joint arm in a rotating mode and provided with a locking function.

Furthermore, the second joint is provided with a connecting part, the rear end of the connecting part with a locking function is rotatably connected to the front end of the first joint, and the telescopic part is rotatably connected to the connecting part.

Further, the pars contractilis including cutting fork extensible member and drive assembly, it rotates on connecting portion to cut fork extensible member rear end, drive assembly installs on connecting portion and is connected with the transmission of cutting fork extensible member rear end to order about and cut the fork extensible member and do concertina movement.

Furthermore, the drive assembly comprises two gas springs, one end of each gas spring is rotatably connected to the connecting portion, and the other end of each gas spring is rotatably connected to the scissor-type telescopic piece.

Furthermore, the mechanical arm further comprises a third joint, the rear end of the third joint is fixedly connected to the front end of the second joint, and the stepper is rotatably connected to the front end of the third joint.

Further, the stepper includes a guide sleeve rotatably coupled to the third joint, and the moving portion is slidably and rotatably coupled to the guide sleeve.

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.

Further, the detection element is a magnetic rotary encoder.

Compared with the prior art, the utility model discloses following beneficial effect has: the device enables the probe installed on the stepper to move synchronously along with the movement of a patient through the cooperation of the mechanical arm with multiple degrees of freedom and the stepper with the moving and rotating functions, the variable quantity of displacement is synchronously fed back, the ultrasonic probe can freely and flexibly move in the whole gland through the multidirectional and unlimited movement of the stepping connecting support, the probe can be supported at any position through a balancing technology, and the accuracy of a detection result is ensured.

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 the schematic structural diagram of the embodiment of the present invention after the trolley is removed.

Fig. 3 is a schematic structural diagram of the mechanical arm in the embodiment of the present invention.

Fig. 4 is a schematic structural diagram of the interior of the second joint of the mechanical arm in the embodiment of the present invention.

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

Fig. 6 is a schematic structural diagram of a moving portion in an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of an installation part in an embodiment of the present invention.

Fig. 8 is a schematic structural view of the positioning plate and the sliding groove in the embodiment of the present invention.

Fig. 9 is a schematic structural view of the positioning plate according to the embodiment of the present invention.

In the figure: 1-trolley, 11-universal wheel, 12-electric lifting column, 13-display, 2-mechanical arm, 21-first joint, 211-first joint arm, 212-second joint arm, 213-locking stud, 22-second joint, 221-connecting part, 222-telescopic part, 223-fan-shaped movable block, 224-gas spring, 225-locking bolt, 226-pin shaft, 227-locking buckle, 228-cylindrical lock catch, 229-rotating shaft, 23-third joint, 231-rear end bracket, 232-connecting rod, 233-front end bracket, 3-stepper, 31-guide sleeve, 32-knob, 33-rotating groove, 4-detection element, 5-moving part, 51-rack, 52-inserted rod, 53-rotating part, 54-connecting rod, 55-gear ring, 6-mounting part, 61-base, 62-probe lock catch, 63-jack, 64-sliding groove, 65-positioning ball, 66-positioning piece, 661-positioning hole, 662-positioning groove and 7-probe.

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 prostate detection device includes a cart 1, a lifting mechanism, a stepper 3, and a robot arm 2.

Four universal rotating wheels 11 with brakes are arranged at the bottom of the trolley 1, in the embodiment, the brakes of the universal rotating wheels 11 adopt a linkage brake structure, and the brakes of the four universal rotating wheels 11 are controlled by one pedal. So as to facilitate the stability of the trolley. The lifting mechanism is fixedly arranged on the trolley, and the trolley is provided with a corresponding central control system.

The lifting mechanism preferably selects an electric lifting column 12, the rear end of the mechanical arm 2 is rotatably connected to a lifting shaft of the electric lifting column, and the top of the lifting shaft of the electric lifting column 12 is connected with a display 13.

As shown in fig. 3-4, the robot arm 2 includes a first joint 21, a second joint 22, and a third joint 23.

The first joint 21 includes a first joint arm 211 and a second joint arm 212, the rear end of the first joint arm 211 is rotatably connected to the lifting shaft of the electric lifting column 12, the rear end of the second joint arm 212 is rotatably connected to the front end of the first joint arm 211, and the rear end of the second joint 22 is rotatably connected to the front end of the second joint arm 212. The two joint arms of the first joint 21 realize large-angle rotation of the whole mechanical arm 2, so that the moving range of the mechanical arm 2 is ensured; when in use, the angle of the first joint 21 is adjusted and locked. First articulated arm 211 includes latch segment and locking double-screw bolt 213, the both ends of latch segment have a through-hole respectively, the middle part has the locking groove of two through-holes of a intercommunication, the locking double-screw bolt spiro union is at the locking groove middle part, second articulated arm rear end fixedly connected with protruding axle, the lift axle of electronic lift post cup joints in the latch segment rear end through-hole, the protruding axle cup joints in the latch segment front end through-hole, when the locking double-screw bolt 213 of screwing, the locking groove reduces, thereby it dies with the lift axle and the protruding axle lock in the two through-holes, thereby make first articulated arm lock epaxial in the lift, second articulated arm locks on first articulated arm.

The second joint 22 includes a connecting portion 221 and an extendable portion 222, the rear end of the connecting portion 221 is rotatably connected to the front end of the second joint arm 212 with a lock function, and the extendable portion 222 is rotatably connected to the connecting portion 221. The rear end of the connecting portion 221 is pivotally connected to the second articulated arm 212 by a pin 226, and is used for locking the pin 226 by a locking bolt 225.

The telescopic portion 222 includes a scissor type telescopic member and a driving assembly, the rear end of the scissor type telescopic member is rotatably connected to a rotating shaft 229 of the connecting portion, and the driving assembly is mounted on the connecting portion and is in transmission connection with the rear end of the scissor type telescopic member to drive the scissor type telescopic member to perform telescopic movement.

In this embodiment, the driving assembly includes two gas springs 224, one end of the gas spring 224 is rotatably connected to the connecting portion 221, and the other end of the gas spring 224 is rotatably connected to the scissor-type telescopic member, so that the telescopic portion 222 can be maintained in this state without external force by the damping of the gas spring 224 itself, and free fall cannot occur.

In this embodiment, two sector-shaped movable blocks 223 are fixedly connected to the scissor type telescopic member, a locking assembly is disposed on the connecting portion 221, the locking assembly includes a locking buckle 227 and a cylindrical locking buckle 228, the locking buckle 227 is used for driving the cylindrical locking buckle 228 to move, the cylindrical locking buckle 228 acts on the sector-shaped movable block 223, and when the cylindrical locking buckle 228 locks the sector-shaped movable block 223, the scissor type telescopic member can neither extend nor rotate up and down.

The third joint 23 comprises a connecting rod 232, two ends of the connecting rod 232 are fixedly connected with a U-shaped bracket, a rear end bracket 231 of the connecting rod is fixedly connected with the front end of the scissor type telescopic piece, and a front end bracket 233 of the connecting rod is rotatably connected with the stepper; the connecting rod 232 can rotate within a small range, so that the clamping probe on the stepper can follow the upward movement or the downward movement when the body position of the patient moves, and the prostate gland is prevented from being pressed by the probe.

As shown in fig. 5-6, the stepper 3 includes a guide sleeve 31 and a moving part 5 slidably and rotatably coupled in the guide sleeve.

Two opposite side walls of the guide sleeve 31 are respectively provided with a triangular rotating groove 33, the front end brackets 233 of the third joint 23 are respectively rotatably connected in the triangular rotating grooves 33, and the triangular rotating grooves 33 enable the stepper 3 to rotate and also limit the rotating angle of the stepper 3.

The guide sleeve 31 is provided with a driving member for driving the moving part 5 to move axially along the guide sleeve, wherein the driving member is a knob 32 with a gear, the side wall of the moving part 5 is provided with a rack 51 engaged with the knob gear, and the moving part 5 is further controlled to move axially along the guide sleeve by rotating the knob 32. A connecting rod 54 is fixedly arranged in the moving part 5, a gear ring 55 is fixedly connected to the front end of the connecting rod 54, and a rotating part 53 is fixedly connected to the rear end of the connecting rod 54 and directly rotates the rotating part 53, so that the moving part 5 can rotate in the guide sleeve 31. The gear ring 55 is engaged with a measuring wheel, and a detecting element is provided beside the measuring wheel for detecting the rotational displacement of the moving part.

As shown in fig. 7-9, the front end of the moving part 5 is detachably connected with a mounting part 6 for mounting the probe, the mounting part 6 comprises a base 61, a probe lock catch 62 and a positioning piece 66, the base 61 is provided with a slot, the rear end of the probe 7 is placed in the slot, and the probe lock catch 62 is locked to fix the probe 7 on the mounting part; the base 61 is also provided with an insertion hole 63, the front end of the moving part 5 is provided with an insertion rod 52 inserted into the insertion hole, the front end of the insertion rod 52 is provided with an annular groove, the side wall of the base 61 is provided with a sliding groove 64 communicated with the insertion hole, the positioning piece 66 is connected in the sliding groove 64 in a sliding manner, when the positioning piece 66 is inserted into the sliding groove 64, the bottom of the positioning piece 66 is just embedded into the groove of the insertion rod, and therefore the insertion rod 52 is fixed to prevent the insertion rod from being separated from the mounting part 6; the entrance of spout 64 is provided with location pearl 65, the bottom end of spacer 66 is provided with the constant head tank 662 of two locating holes 661 and two locating holes of intercommunication, the degree of depth of constant head tank 662 is less than the degree of depth of locating hole 661, when spacer 66 inserts in spout 64, the locating hole of the first embedding front end of location pearl 665, along with the propulsion of spacer 66, location pearl 65 slides to the locating hole that gets into the rear end along constant head tank 662 in, thereby the spout is all sent into to the spacer, and the location pearl blocks the spacer, avoid the spacer to break away from the spout under no exogenic action.

The mechanical arm 2 is provided with a detection element 4 for monitoring the rotation and expansion displacement amount of the mechanical arm, the stepper is also provided with a detection element 4 for monitoring the rotation and movement displacement amount of the mechanical arm, and preferably, the detection element 4 is a magnetic rotary encoder.

Two magnetic rotary encoders are arranged at the joint of the connecting part 221 and the telescopic part 222 of the second joint 22, one for detecting the telescopic displacement of the telescopic part and the other for detecting the up-and-down rotation displacement of the telescopic part.

A magnetic rotary encoder is arranged at the joint of the bracket at the front end of the third joint 23 and the triangular rotating groove and is used for detecting the rotating displacement of the stepper.

The stepper 3 is provided therein with two magnetic rotary encoders, one for detecting the amount of displacement of the moving part and one for detecting the amount of rotational displacement of the moving part.

The device can adopt a side-sweeping type and an end-sweeping type, and the side-sweeping type operation is specifically explained as follows:

1. the mechanical arm is extended by about two thirds, and the height of the mechanical arm is adjusted by using the electric lifting column, so that the mechanical arm is ensured to be parallel to the ground.

2. The stepper is positioned approximately to the patient height (parallel to the tracker, parallel to the ground).

3. The stepper is placed in an intermediate position between full insertion/retraction. Unlocking the first joint and the caster brake.

4. The probe is placed in the patient and the robotic arm and stepper are held level with the probe inserted into the patient's rectum. The robotic arm is raised or lowered by a lift column.

5. The stepper is rotated and the first joint is adjusted until the probe is near the middle of the prostate gland and is reasonably centered in the imaging field of view. Ensure that the ultrasound probe remains in such a position: i.e. the image shown is of the prostate in the middle of the gland, in the center of the imaging field of view.

6. Locking the first joint and the trolley caster.

The prostate gland is located in the middle of the prostate, in the center of the imaging field of view, and in accordance with the animated image displayed: the probe was rotated counter-clockwise until just beyond the right margin of the prostate.

The probe is rotated clockwise until the entire prostate is visible.

End-sweeping type:

1. the ultrasound probe is ensured to be in a position where the displayed image is an axial view of the middle of the prostate, centered on the imaging field of view.

2. During the biopsy procedure, the trolley is placed in a position convenient for the use of a keyboard and mouse, and it is ensured that the display is easily visible when the trolley is placed in this way.

3. Positioning the robotic arm and stepper in their starting positions;

a. the tracker is expanded to approximately half of the full expansion, and the first joint height is adjusted using a motorized lift column to ensure that the robotic arm is parallel to the ground.

b. The stepper is positioned to the patient level (parallel to the tracker, parallel to the ground).

4. And positioning the stepper. And unlocking the first joint and braking the universal rotating wheel.

5. The probe is placed in the patient and the trolley is moved.

Note that: the mechanical arms and stepper should be placed horizontally with the probe inserted into the patient's rectum. If the height of the first joint needs to be adjusted, please use the electric lifting column to lift the mechanical arm. The height of the first joint is not adjusted when the instrument is attached to the patient.

Alternatively, the probe may be removed from the patient, connected to a stepper, and reinserted into the patient. In using this method, it is important to maintain the above-described starting position.

The robotic arm and stepper should be approximately 90 ° from each other and parallel to the ground. The first joint should not lock.

6. The stepper is rotated to adjust the first joint to position the prostate axially within the gland and to be reasonably centered in the field of vision for imaging.

7. And locking the first joint and braking the universal rotating wheel.

The device has the following advantages:

(1) six-degree-of-freedom mechanical arm: respectively consists of upper and lower, front and back, left and right moving joints; the mechanical arm is internally provided with a plurality of subminiature magnetic rotary encoders in total, the current position of the mechanical arm is obtained in real time and fed back to software, the change of the position of the probe generated by the involuntary movement of a patient is fed back to a computer host through the encoders, and MRI images are subjected to real-time automatic motion compensation according to the data of the movement of the probe and are matched with real-time ultrasonic images. And then help the doctor carry out accurate focus biopsy and sample, ensure the image accuracy.

(2) A stepper: the two-axis movement, the forward and backward movement of the probe and the 360-degree rotation function are realized, and the structure is small and exquisite.

(3) Zero-pressure-sense balance third joint: at the junction of the robotic arm and the stepper, there is a third joint that allows the probe to rotate in pitch and yaw, so that involuntary movement of the patient's body after the probe has entered the rectum does not cause the probe to press against the rectum.

(4) The trolley base is used for four-wheel one-key positioning, and the trolley is quickly released and locked.

(5) Mechanical arm: two balance gas springs of arm, two fan-shaped movable blocks open the opening that has equal radian for the activity stroke of restriction balance gas spring. When the mechanical arm tilts up, the movable rods of the two balance gas springs extend out completely, and when the mechanical arm tilts down, the movable rods of the two balance gas springs retract completely. During the adjustment, will lock the knot earlier and upwards open, but the arm is in free activity state, installs the probe on the stepper, when adjusting the arm to parallel with ground, because the operation that the balanced air spring was drawn back each other, the arm can keep balanced stillness, and the arm can down fall when being different from traditional arm and not having external force by the influence of gravity.

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

1. A prostate detection device, characterized by: including elevating system, stepper, have the arm of rotation and flexible function, the arm rotates to be connected on elevating system, stepper rotates to be connected on the arm, stepper includes a rotatable removal portion, removal portion tip fixedly connected with is used for installing the installation department of probe, be provided with the detecting element who is used for monitoring its rotation and flexible displacement amount on the arm, also be provided with the detecting element who is used for monitoring its rotation and removes the displacement amount on the stepper.

2. The prostate detection device according to claim 1, wherein: the mechanical arm comprises a first joint and a second joint, the rear end of the first joint is connected to the lifting mechanism in a rotating mode with a locking function, the rear end of the second joint is connected to the front end of the first joint in a rotating mode with the locking function, and the second joint comprises a telescopic portion capable of rotating up and down.

3. The prostate detection device according to claim 2, wherein: the first joint comprises a first joint arm and a second joint arm, the rear end of the first joint arm is connected to the lifting mechanism in a rotating mode and has a locking function, the rear end of the second joint arm is connected to the front end of the first joint arm in a rotating mode and has a locking function, and the rear end of the second joint arm is connected to the front end of the second joint arm in a rotating mode and has a locking function.

4. The prostate detection device according to claim 2, wherein: the second joint is provided with a connecting part, the rear end of the connecting part with a locking function is rotatably connected to the front end of the first joint, and the telescopic part is rotatably connected to the connecting part.

5. The prostate detection device according to claim 4, wherein: the telescopic part comprises a scissor type telescopic piece and a driving assembly, the rear end of the scissor type telescopic piece is rotatably connected to the connecting part, and the driving assembly is installed on the connecting part and is in transmission connection with the rear end part of the scissor type telescopic piece so as to drive the scissor type telescopic piece to do telescopic motion.

6. The prostate detection device according to claim 5, wherein: the drive assembly comprises two air springs, one end of each air spring is rotatably connected to the connecting portion, and the other end of each air spring is rotatably connected to the scissor-type telescopic piece.

7. The prostate detection device according to any one of claims 2 to 6, wherein: the mechanical arm further comprises a third joint, the rear end of the third joint is fixedly connected to the front end of the second joint, and the stepper is rotatably connected to the front end of the third joint.

8. The prostate detection device according to claim 7, wherein: the stepper comprises a guide sleeve rotatably connected to the third joint, and the moving part is slidably and rotatably connected to the guide sleeve.

9. The prostate detection device according to claim 8, wherein: and a driving piece for driving the moving part to move axially along the guide sleeve is arranged on the guide sleeve.

10. The prostate detection device according to claim 1, wherein: the detection element is a magnetic rotary encoder.