CN110403700B - Doctor operation table - Google Patents
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- CN110403700B CN110403700B CN201910814368.4A CN201910814368A CN110403700B CN 110403700 B CN110403700 B CN 110403700B CN 201910814368 A CN201910814368 A CN 201910814368A CN 110403700 B CN110403700 B CN 110403700B
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- 210000000707 wrist Anatomy 0.000 claims abstract description 14
- 230000001360 synchronised effect Effects 0.000 claims description 112
- 230000033001 locomotion Effects 0.000 abstract description 23
- 230000005484 gravity Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 6
- 238000002324 minimally invasive surgery Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000001356 surgical procedure Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 208000002847 Surgical Wound Diseases 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 210000003857 wrist joint Anatomy 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/30—Surgical robots
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/70—Manipulators specially adapted for use in surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/30—Surgical robots
- A61B2034/302—Surgical robots specifically adapted for manipulations within body cavities, e.g. within abdominal or thoracic cavities
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Robotics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
Abstract
The invention relates to a doctor operation table, which solves the technical problems that the structure of the traditional doctor mechanical arm is complex, the weight is large, the mechanical arm is greatly influenced by gravity, the operation is difficult, the doctor is easy to fatigue, the movement flexibility is low, and the joint movement precision is low; the doctor mechanical arm comprises a base, a first arm rod, a rotary connecting seat, a second arm rod and a wrist, wherein the base is connected with the upright post, and the rear end of the first arm rod is connected with the base through a joint and can rotate on a horizontal plane; the second arm rod is connected with the rotary connecting seat through a joint and can rotate on a vertical plane by taking the rotary connecting seat as a reference; the rotary connecting seat is connected with the front end of the first arm rod through a joint and can rotate on the horizontal plane by taking the first arm rod as a reference. The invention is widely applied to the technical field of medical appliances.
Description
Technical Field
The invention relates to the technical field of minimally invasive surgical machines, in particular to a doctor operating table.
Background
The reference application publication number is CN109091237A, and the Chinese patent application is named as a minimally invasive surgical instrument auxiliary system, and minimally invasive surgery represented by laparoscope is known as one of important contributions of medical science in the 20 th century to human civilization, and minimally invasive surgery refers to surgery performed by a doctor penetrating into a body through a tiny incision on the surface of the human body by using an elongated surgical tool. Compared with the traditional open surgery, the surgical incision is small, the bleeding amount is small, the postoperative scar is small, the recovery time is quick, and the like, so that the pain suffered by a patient is greatly reduced; therefore, minimally invasive surgery is widely used in clinical surgery.
Referring to chinese patent application publication No. CN109091238a, entitled split minimally invasive surgical instrument assist system, a minimally invasive surgical robotic system includes a doctor console that a surgeon manipulates a doctor robotic arm to precisely control one or more surgical instruments on an instrument robotic arm of a patient console to perform various surgical actions by viewing a 3D image display.
Surgical instruments are a necessary tool for surgical procedures that may perform various functions including clamping, cutting, stapling, and the like. Surgical instruments have different configurations including implement tips, wrist joints, instrument bars, instrument cartridges, etc., and are inserted through openings to perform tele-surgery.
The doctor mechanical arm corresponds to each motion joint of the patient mechanical arm, and in the operation process, the motion of the instrument mechanical arm follows the motion of the doctor mechanical arm and feeds back the motion parameters of each joint to the system. However, under the prior art, doctor's arm structure is comparatively complicated, bulky, weight is big, and the arm is arranged perpendicularly and is received gravity influence great, difficult operation, doctor tired easily, and the motion flexibility is low, and joint motion precision is low.
However, the doctor mechanical arm is of a serial structure, and the rotation of each rotary joint is manually controlled by a doctor, so that the rotation load of the joint is overlarge, the joint movement precision is reduced, the operation fatigue of the doctor is also caused, the operation quality is influenced, and the long-time operation is not facilitated. Therefore, how to reduce the turning load of shutdown, improve the movement precision of joints, reduce the operation fatigue of doctors and improve the operation quality is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The invention aims to solve the technical problems that a doctor mechanical arm of the traditional minimally invasive surgery robot is complex in structure, large in size and heavy in weight, the mechanical arm is vertically arranged and is greatly influenced by gravity, the operation is difficult, a doctor is easy to fatigue, the movement flexibility is low, and the joint movement precision is low, and provides a doctor operation table which is simple in structure, small in size and light in weight, the mechanical arm is less influenced by gravity, the operation is easy, the doctor burden is lightened, the movement flexibility is high, and the joint movement precision is high.
The invention provides a doctor operation table, which comprises a stand, armrests, a display screen, stand columns and a doctor mechanical arm, wherein the armrests are connected with the front part of the stand, the stand columns are connected with the rear part of the stand, the doctor mechanical arm is connected with the stand columns, and the display screen is connected with the stand columns through brackets; the doctor mechanical arm comprises a base, a first arm rod, a rotary connecting seat, a second arm rod and a wrist, wherein the base is connected with the upright post, the rear end of the first arm rod is connected with the base through a joint, and the first arm rod can rotate on a horizontal plane; the second arm rod is connected with the rotary connecting seat through a joint, and can rotate on a vertical plane by taking the rotary connecting seat as a reference; the rotary connecting seat is connected with the front end of the first arm rod through a joint, and can rotate on a horizontal plane by taking the first arm rod as a reference; the wrist is connected with the second arm lever.
Preferably, the doctor mechanical arms are two groups, namely a left doctor mechanical arm and a right doctor mechanical arm, and the left doctor mechanical arm and the right doctor mechanical arm are symmetrically arranged.
The invention also provides a doctor operation table, which comprises a stand, armrests, a display screen, an upright post and a doctor mechanical arm, wherein the armrests are connected with the front part of the stand, the upright post is connected with the rear part of the stand, the doctor mechanical arm is connected with the upright post, and the display screen is connected with the upright post through a bracket; the doctor mechanical arm comprises a base, a first arm rod, a rotary connecting seat, a second arm rod, a wrist, a central shaft, a torsion spring, a connecting seat, a rear end connecting shaft, a front end connecting shaft, a third encoder, a third fixed synchronous pulley, a third driven synchronous pulley, a third synchronous belt, a first encoder, a first fixed synchronous pulley, a first rotating shaft, a first driven synchronous pulley, a first synchronous belt, a second encoder, a second fixed synchronous pulley, a second rotating shaft, a second driven synchronous pulley and a second synchronous belt; the wrist is connected with the second arm lever;
The first fixed synchronous pulley is fixedly connected with the base, the rear end connecting shaft is fixedly connected with the base, the upper part of the rear end of the first arm rod is rotationally connected with the rear end connecting shaft through an upper bearing, the upper part of the first rotating shaft is fixedly connected with the lower part of the rear end of the first arm rod, the first rotating shaft is rotationally connected with the base through a lower bearing, and the first rotating shaft penetrates through a central hole of the first fixed synchronous pulley; the first encoder is fixedly connected with the first arm rod, the first driven synchronous pulley is fixedly connected with a rotating shaft of the first encoder, and the first synchronous belt is connected between the first driven synchronous pulley and the first fixed synchronous pulley; the rear end connecting shaft is fixedly connected with the upright post;
The second fixed synchronous pulley is fixedly connected with the rotary connecting seat, the front end connecting shaft is fixedly connected with the rotary connecting seat, the upper part of the front end of the first arm rod is rotationally connected with the front end connecting shaft through an upper bearing, the upper part of the second rotating shaft is fixedly connected with the lower part of the front end of the first arm rod, and the second rotating shaft is rotationally connected with the rotary connecting seat through a lower bearing; the second rotating shaft passes through a central hole of the second fixed synchronous pulley; the second encoder is fixedly connected with the first arm rod, the second driven synchronous pulley is fixedly connected with a rotating shaft in the second encoder, and the second synchronous belt is connected between the second driven synchronous pulley and the second fixed synchronous pulley; the connecting seat is fixedly connected with the second arm rod, the central shaft is provided with a body and a torsion spring connecting part, the torsion spring connecting part is provided with a torsion spring connecting hole, the torsion spring connecting part is fixedly connected with the rotating connecting seat, the body of the central shaft is connected with the connecting seat through a bearing, the torsion spring is sleeved on the body of the central shaft, one end of the torsion spring is connected with the torsion spring connecting hole, and the other end of the torsion spring is connected with the connecting seat; the third encoder is fixedly connected with the connecting seat, the third driven synchronous pulley is fixedly connected with the rotating shaft of the third encoder, the third fixed synchronous pulley is fixedly connected with the central shaft, and the third synchronous belt is connected between the third fixed synchronous pulley and the third driven synchronous pulley.
Preferably, the number of torsion spring connection holes is two or more.
Preferably, the doctor mechanical arm further comprises a brake for locking the second arm lever.
Preferably, the brake for locking the second arm lever comprises a third band-type brake, a band-type brake seat and a synchronous pulley for locking, wherein the band-type brake seat is fixedly connected with the connecting seat, the third band-type brake is fixedly connected with the band-type brake seat, the third band-type brake is provided with a band-type brake block and a shaft hole, a torsional spring connecting part of the central shaft is provided with a synchronous belt connecting part, the band-type brake seat is connected with a rotating shaft through a bearing, the lower part of the rotating shaft is arranged in the shaft hole of the third band-type brake, and the band-type brake block of the third band-type brake is connected with the rotating shaft through a flat key; the synchronous belt wheel for locking is fixedly connected with the upper part of the rotating shaft, and the synchronous belt connection part of the synchronous belt wheel for locking and the central shaft is connected through a synchronous belt.
Preferably, the doctor mechanical arm further comprises a limiting piece and a limiting pin, wherein the limiting piece is fixedly connected with the connecting seat, the limiting piece is provided with a limiting groove, the limiting pin is connected with the body of the central shaft, and the limiting pin is located in the limiting groove.
Preferably, the doctor mechanical arm further comprises a brake for locking the first arm lever.
Preferably, the doctor arm further comprises a brake for locking the swivel connection.
Preferably, the doctor mechanical arms are two groups, namely a left doctor mechanical arm and a right doctor mechanical arm, and the left doctor mechanical arm and the right doctor mechanical arm are symmetrically arranged.
The invention has the beneficial effects that the rotary joint can be effectively balanced, so that the burden of an operator is reduced, the joint movement precision is improved, and the fatigue caused by long-time operation is avoided. In addition, the device has the advantages of low cost, small volume and high reliability. The doctor mechanical arm has the characteristics of light and handy structure, small volume, light weight, low motion inertia, high motion flexibility and high joint motion precision, is easy to operate, effectively reduces the operation fatigue of a doctor, is beneficial to long-time operation and ensures the operation quality. Meanwhile, in order to prevent potential risks brought to patients by misoperation and facilitate transportation and fixation, the doctor mechanical arm also has a position locking function, and can lock each joint at an expected position. The invention can also overcome the problem of uncoordinated eye and hand movements in the existing minimally invasive technology. The articulation measuring device can accurately feed back the articulation parameters of the mechanical arm in real time.
The invention is especially suitable for low-speed and light-load use conditions, such as the rotating joint of the doctor mechanical arm of the minimally invasive surgery robot which is operated in a master-slave following mode.
Further features of the invention will be apparent from the description of the embodiments that follows.
Drawings
FIG. 1 is a schematic view of the structure of a minimally invasive surgical robotic physician console;
FIG. 2 is a schematic view of the right doctor mechanical arm;
FIG. 3 is a schematic view of a joint structure between a swivel connection mount and a second arm lever of the right doctor mechanical arm shown in FIG. 2;
FIG. 4 is a schematic illustration of the torsion spring connection of FIG. 3;
FIG. 5 is a schematic view of the central axis of the structure of FIG. 4;
FIG. 6 is a schematic view of two extension arms of the torsion spring respectively connected with the connecting seat and the central shaft;
FIG. 7 is a schematic illustration of the joint of FIG. 3 with an encoder mounted thereto;
fig. 8 is a schematic diagram of the proportional relationship of the swinging and rotation angles of the third fixed synchronous pulley and the third driven synchronous pulley;
FIG. 9 is a schematic diagram of a connection relationship of a third band-type brake;
FIG. 10 is a schematic view of a rotational joint between the rear end of a first arm and a base and a rotational joint between a swivel connection base and the front end of the first arm in a right doctor arm;
FIG. 11 is a schematic view of the rotary joint between the rear end of the first arm and the base in the configuration of FIG. 10;
fig. 12 is a schematic view showing a structure of a rotary joint between the rotary joint base and the front end of the first arm in the structure shown in fig. 10.
The symbols in the drawings illustrate:
1. The device comprises a base, a handrail, a control panel, a display screen, a bracket, a stand column, a left doctor mechanical arm, a joint axis I, a joint axis II and a joint axis III, wherein the handrail is 2-1, the control panel is 3, the display screen is 3-1, the bracket is 4, the stand column is 5, the left doctor mechanical arm is 5-1, the joint axis I is 5-2, the joint axis II is 5-3, and the joint axis III is provided; 6. the right doctor arm, 6-1, joint axis one, 6-2, joint axis two, 601, base, 602, first arm, 603, pivot joint, 604, second arm, 605, wrist, 606, center shaft, 606-1, body, 606-2, torsion spring connection, 606-3, torsion spring connection, 606-4, timing belt connection, 607, torsion spring, 607-1, first extension arm, 607-2, second extension arm, 608, bearing, 609, joint, 610, stop tab, 611, stop pin, 612, band brake base, 613, third band brake, 614, rear end connection shaft, 615, front end connection shaft, 616, third encoder, 617, third fixed timing pulley, 618, third driven timing pulley, 619, third timing belt, 620, timing belt, 621, locking timing pulley, 622, shaft 622-1, bearing. 623. The first encoder 624, the first band-type brake 625, the first fixed synchronous pulley 626, the upper bearing 627, the first rotating shaft 628, the lower bearing 629, the first driven synchronous pulley 630, the first synchronous belt; 631. the second encoder 632, the second band-type brake 633, the second fixed synchronous pulley 634, the upper bearing 635, the second rotating shaft 636, the lower bearing 637, the second driven synchronous pulley 638, the second synchronous belt. D represents the center of gravity.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the doctor operation table comprises a stand 1, an armrest 2, a display screen 3, a stand 4, a left doctor mechanical arm 5 and a right doctor mechanical arm 6, wherein the armrest 2 is connected with the front part of the stand 1, the stand 4 is connected with the rear part of the stand 1, the left doctor mechanical arm 5 and the right doctor mechanical arm 6 are respectively connected with the stand 4, and the left doctor mechanical arm 5 and the right doctor mechanical arm 6 are symmetrically arranged so as to adapt to the left hand and the right hand of a doctor; the display screen 3 is connected with the upright post 4 through the bracket 3-1 (the height and the pitching angle of the display screen 3 can be adjusted by adjusting the bracket 3-1). The right doctor mechanical arm 6 comprises a base 601, a first arm rod 602, a rotary connecting seat 603, a second arm rod 604 and a wrist 605, wherein the base 601 is fixedly connected with the upright post 4, the rear end of the first arm rod 602 is connected with the base 601 through a joint, and the first arm rod 602 can rotate on a horizontal plane; the second arm 604 is articulated with the rotational joint 603, and the second arm 604 can rotate on a vertical plane with the rotational joint 603 as a reference; the rotational connection base 603 is connected to the front end of the first arm 602 by a joint, and the rotational connection base 603 can rotate on a horizontal plane with the first arm 602 as a reference. The wrist 605 is connected to the second arm 604. The control panel 2-1 is arranged on the armrest 2, and the control panel 2-1 is connected and communicated with a control system of the minimally invasive surgery robot.
The left doctor mechanical arm 5 has the same structure as the right doctor mechanical arm 6. The doctor mechanical arm is of a serial structure, in the operation process, a doctor holds the wrist 605 by hand to operate the doctor mechanical arm to perform an operation, each joint of the left doctor mechanical arm 5 rotates around a joint axis one 5-1, a joint axis two 5-2 and a joint axis three 5-3, wherein the joint axis three 5-3 is perpendicular to the gravity direction, the joint axis one 5-1 and the joint axis two 5-2 are perpendicular to the ground, the influence of the mechanical arm gravity on the doctor arm is avoided, the doctor operation is enabled to be lighter and more flexible, the doctor operation fatigue is effectively reduced, and the operation quality is guaranteed.
In the operation process, a doctor sits in front of a doctor operation desk, wears 3D glasses to watch the display screen 3, places the arms of the doctor on the armrests 2, and controls the left doctor mechanical arm 5 and the right doctor mechanical arm 6 by two hands to perform various operation operations. The height of the armrest 2 can be independently adjusted through a lifting mechanism (such as an electric push rod) so as to adapt to the operation requirements of different doctors. The height of the doctor mechanical arm can be independently adjusted through the corresponding lifting mechanism so as to adapt to the operation requirements of different doctors and prevent the interference or the movement range of the two doctor mechanical arms from exceeding the working space in the operation process.
As shown in fig. 2 to 6, the rear end connecting shaft 614 is fixedly connected to the base 601, and the rear end of the first arm 602 is rotatably connected to the rear end connecting shaft 614 through a bearing; the joint structure between the second arm 604 and the rotating connection seat 603 specifically comprises a central shaft 606, a torsion spring 607, a bearing 608, a connection seat 609, a limiting piece 610 and a limiting pin 611, the connection seat 609 is fixedly connected with the second arm 604 through screws, the central shaft 606 is provided with a body 606-1 and a torsion spring connection portion 606-2, the torsion spring connection portion 606-2 is provided with a plurality of torsion spring connection holes 606-3, the torsion spring connection portion 606-2 is fixedly connected with the rotating connection seat 603 through screws, the bearing 608 is sleeved on the body 606-1, the outer ring of the bearing 608 is connected with the connection seat 609 (namely, the second arm 604 is rotatably connected with the central shaft 606 through the bearing), the torsion spring 607 is sleeved on the body 606-1, a first extension arm 607-1 of the torsion spring 607 is connected with the torsion spring connection hole 606-3, the second extension arm 607-2 of the torsion spring 607 is connected with the connection seat 609 (when the torsion spring 607 is assembled, the torsion force of the torsion spring 607 can be adjusted according to the torsion spring connection holes 606-3 at different positions), the limiting piece 610 is fixedly connected with the connection seat 609, the limiting piece 610 is provided with a limiting groove 610, and the limiting pin 611 is positioned in the limiting groove 610, and the limiting pin 611 is connected with the central shaft 606-1, and the limiting pin 611 is positioned in the limiting groove 610. When the doctor holds the wrist 605 by hand and rotates the second arm 604 about the central axis 606, the limit pin 611 can only move in the limit groove 610-1, thereby limiting the rotation angle of the second arm 604. The rear connecting shaft 614 is fixedly connected with the upright post 4.
As shown in fig. 7 and 8, in order to measure the movement data of the second arm 604 during rotation relative to the rotation connection base 603, a third encoder 616, a third fixed synchronous pulley 617, a third driven synchronous pulley 618, and a third synchronous belt 619 are provided, the third encoder 616 is fixedly mounted on the connection base 609, the third driven synchronous pulley 618 is fixedly connected to the rotation shaft in the third encoder 616 (the rotation of the third driven synchronous pulley 618 can drive the rotation shaft of the third encoder 616), the third fixed synchronous pulley 617 is fixedly connected to the central shaft 606, and the third synchronous belt 619 is connected between the third fixed synchronous pulley 617 and the third driven synchronous pulley 618. The joint position feedback function is realized by the encoder, and the process of enabling the third encoder 616 to act to generate signals is as follows: the rotary connecting seat 603 is stationary, so that the second arm 604 rotates about the center of the central shaft 606, and the third synchronous belt 619 winds around the third fixed synchronous pulley 617 and drives the third driven synchronous pulley 618 to rotate, that is, the planetary motion shown in fig. 8 is realized, and the third driven synchronous pulley 618 rotates (the direction of rotation is opposite to the direction of revolution) while revolving about the axis of the third fixed synchronous pulley 617. Assuming that the revolution angular velocity of the third driven synchronous pulley 618 is ω1 and the angle is θ1, the rotation angular velocity of the third driven synchronous pulley 618 is ω2 and the angle is θ2, the radius of the third fixed synchronous pulley 617 is R1, and the radius of the third driven synchronous pulley 618 is R2, ω1×r1=ω2×r2 is:
θ1/θ2=ω1/ω2=r2/R1, it can be seen that a variable speed, variable angle transmission can be achieved. The components formed by the third encoder 616, the third fixed synchronous pulley 617, the third driven synchronous pulley 618 and the third synchronous belt 619 have the advantages of light structure, easy operation, high precision, small volume and low cost, and can accurately feed back the joint motion parameters of the mechanical arm in real time.
In addition, a band-type brake seat 612 may be fixedly installed on the connection seat 609, referring to fig. 2 and 7 and 9, a third band-type brake 613 is fixedly installed on the band-type brake seat 612, the third band-type brake 613 adopts a well-known structure, the third band-type brake 613 is provided with a band-type brake block and a shaft hole, and the third band-type brake 613 can lock the second arm 604, that is, lock the second arm 604 to be fixed at a certain position. The torsional spring connecting part 606-2 of the central shaft 606 is provided with a synchronous belt connecting part 606-4 (shown in fig. 5), the rotating shaft 622 is rotationally connected with the band-type brake seat 612 through a bearing 622-1, the lower part of the rotating shaft 622 is arranged in a shaft hole of the third band-type brake 613, and a band-type brake block of the third band-type brake 613 is connected with the rotating shaft 622 through a flat key; the locking synchronous pulley 621 is fixedly connected with the upper part of the rotating shaft 622, and the synchronous belt 620 is connected between the locking synchronous pulley 621 and the synchronous belt connecting part 606-4 of the central shaft 606 to realize transmission; in the electrified state, the third band-type brake 613 rotates around the central shaft 606, and the third encoder 616 generates a signal; the third band-type brake 613 is in the outage state, and the band-type brake piece of the third band-type brake 613 is held tightly, and the pivot 622 is locked and can not rotate, and under the action of the hold-in range 620, the band-type brake seat 612 can not rotate around the center shaft 606, so that locking braking of the band-type brake seat 612 and the center shaft 606 is realized, and further the second arm 604 is locked and fixed. The mechanism including the third band brake 613, the rotating shaft 622, the locking timing pulley 621, the timing belt 620, and the timing belt connecting portion 606-4 is used as a brake, and other known brakes may be used to lock the second arm 604.
Referring to fig. 3, the weight of wrist 605 and second arm 604 is G 1, the position of the center of gravity is L1 from the axis of center shaft 606, the weight of band-type brake 613 and band-type brake seat 612 is G 2, and the distance of the center of gravity from the axis of center shaft 606 is L2, as shown in D. In the mechanical arm assembly process, the torsion of the torsion spring pre-tightening component formed by the third band-type brake 613 and the band-type brake seat 612 is M Twisting device . Then M Twisting device +G2·L2＝G1.L1 is satisfied, and the mechanical arm is balanced at the current position. In the limited smaller angle range, the torsion spring provides assistance, and the characteristic curve of the torsion spring is stable, so that the structure can effectively balance the rotary joint of the mechanical arm of the doctor and balance the gravity of the wrist part, thereby relieving the burden of the doctor, facilitating the operation of the doctor, avoiding the fatigue caused by long-time operation and effectively overcoming the fatigue problem of the doctor caused by long-time operation.
As shown in fig. 10, the first arm 602 is rotatable about the first joint axis 6-1, and the swivel joint 603 is rotatable about the second joint axis 6-2. As shown in fig. 11, the first band-type brake 624 is fixedly mounted on the base 601 by a screw, the first fixed synchronous pulley 625 is fixedly connected with the base 601, the rear end connecting shaft 614 is fixedly connected with the base 601 by a screw, and the upper part of the rear end of the first arm 602 is rotatably connected with the rear end connecting shaft 614 by an upper bearing 626. The upper portion of the first rotation shaft 627 is fixedly coupled to the lower portion of the rear end of the first arm 602 by a screw, and the first rotation shaft 627 is rotatably coupled to the base 1 by a lower bearing 628. The first rotation shaft 627 passes through a center hole of the first fixed synchronous pulley 625. The first band-type brake 624 adopts a well-known structure in the prior art, and is provided with a band-type brake block 624-2 and a shaft hole, the lower part of the first rotating shaft 627 is arranged in the shaft hole of the first band-type brake 624, the band-type brake block 624-2 is connected with the first rotating shaft 627 through a flat key, and in the power-off state, the band-type brake block 624-2 is held tightly, and the first rotating shaft 627 is locked and cannot rotate; in the energized state, band-type brake block 624-2 is released and first spool 627 is in turn able to rotate under the support of lower bearing 628. The first encoder 623 is fixedly mounted on the first arm 602, the first driven synchronous pulley 629 is fixedly connected with a rotating shaft in the first encoder 623 (the rotation of the first driven synchronous pulley 629 can drive the rotating shaft in the first encoder 623 to rotate), and the first synchronous belt 630 is connected between the first driven synchronous pulley 629 and the first fixed synchronous pulley 625. Turning the first arm 602 relative to the base 601, referring to fig. 8, the first timing belt 630 is wound around the first fixed timing pulley 625 and drives the first driven timing pulley 629 to rotate, and the first encoder 623 generates a signal. The signal from the first encoder 623 is sent to the control system of the physician's console. It should be noted that first band brake 624 is used as a brake, and other known brakes may be used to lock first arm 602, for example.
As shown in fig. 12, the second band-type brake 632 is fixedly mounted on the rotation connection base 603 by a screw, the second fixed synchronous pulley 633 is fixedly connected with the rotation connection base 603, the front end connection shaft 615 is fixedly connected with the rotation connection base 603 by a screw, and the upper portion of the front end of the first arm 602 is rotatably connected with the front end connection shaft 615 by an upper bearing 634. The upper portion of the second rotating shaft 635 is fixedly connected with the lower portion of the front end of the first arm 602 by a screw, and the second rotating shaft 635 is rotatably connected with the rotational connection seat 603 by a lower bearing 636. The second rotation shaft 635 passes through a center hole of the second fixed synchronous pulley 633. The second band-type brake 632 adopts a well-known structure in the prior art, and is provided with a band-type brake block 632-2 and a shaft hole, the lower part of the second rotating shaft 635 is arranged in the shaft hole of the second band-type brake 632, the band-type brake block 632-2 is connected with the second rotating shaft 635 through a flat key, and in the power-off state, the band-type brake block 632-2 is held tightly, and the second rotating shaft 635 is locked and cannot rotate; in the energized state, band-type brake block 632-2 is released and second shaft 635 is in turn able to rotate under the support of lower bearing 636. The second encoder 631 is fixedly mounted on the first arm 602, the second driven synchronous pulley 637 is fixedly connected to a rotating shaft in the second encoder 631 (the rotation of the second driven synchronous pulley 637 can drive the rotating shaft in the second encoder 631 to rotate), and the second synchronous belt 638 is connected between the second driven synchronous pulley 637 and the second fixed synchronous pulley 633. The second encoder 631 generates and transmits a signal to the control system of the doctor's console by rotating the swivel connection 603 relative to the first arm 602. It should be noted that, the second band brake 632 is used as a brake, and other brakes with known structures may be used to lock the rotational connection seat 603.
The invention and its embodiments have been described above by way of illustration and not limitation, and the invention is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one skilled in the art is informed by this disclosure, other configurations of parts, driving devices and connection modes are adopted without creatively designing similar structures and embodiments without departing from the spirit of the present invention, and the present invention shall not be limited by the scope of the present invention.
Claims (8)
1. The doctor operation table is characterized by comprising a machine base, armrests, a display screen, an upright post and a doctor mechanical arm, wherein the armrests are connected with the front part of the machine base, the upright post is connected with the rear part of the machine base, the doctor mechanical arm is connected with the upright post, and the display screen is connected with the upright post through a bracket; the doctor mechanical arm comprises a base, a first arm rod, a rotary connecting seat, a second arm rod, a wrist, a central shaft, a torsion spring, a connecting seat, a rear end connecting shaft, a front end connecting shaft, a third encoder, a third fixed synchronous pulley, a third driven synchronous pulley, a third synchronous belt, a first encoder, a first fixed synchronous pulley, a first rotating shaft, a first driven synchronous pulley, a first synchronous belt, a second encoder, a second fixed synchronous pulley, a second rotating shaft, a second driven synchronous pulley and a second synchronous belt; the wrist is connected with the second arm lever;
The first fixed synchronous pulley is fixedly connected with the base, the rear end connecting shaft is fixedly connected with the base, the upper part of the rear end of the first arm rod is rotationally connected with the rear end connecting shaft through an upper bearing, the upper part of the first rotating shaft is fixedly connected with the lower part of the rear end of the first arm rod, the first rotating shaft is rotationally connected with the base through a lower bearing, and the first rotating shaft penetrates through the central hole of the first fixed synchronous pulley; the first encoder is fixedly connected with the first arm rod, the first driven synchronous pulley is fixedly connected with a rotating shaft of the first encoder, and the first synchronous belt is connected between the first driven synchronous pulley and the first fixed synchronous pulley; the rear end connecting shaft is fixedly connected with the upright post;
the second fixed synchronous pulley is fixedly connected with the rotary connecting seat, the front end connecting shaft is fixedly connected with the rotary connecting seat, the upper part of the front end of the first arm rod is rotationally connected with the front end connecting shaft through an upper bearing, the upper part of the second rotating shaft is fixedly connected with the lower part of the front end of the first arm rod, and the second rotating shaft is rotationally connected with the rotary connecting seat through a lower bearing; the second rotating shaft passes through a central hole of the second fixed synchronous pulley; the second encoder is fixedly connected with the first arm rod, the second driven synchronous pulley is fixedly connected with a rotating shaft in the second encoder, and the second synchronous belt is connected between the second driven synchronous pulley and the second fixed synchronous pulley; the connecting seat is fixedly connected with the second arm rod, the central shaft is provided with a body and a torsion spring connecting part, the torsion spring connecting part is provided with a torsion spring connecting hole, the torsion spring connecting part is fixedly connected with the rotating connecting seat, the body of the central shaft is connected with the connecting seat through a bearing, the torsion spring is sleeved on the body of the central shaft, one end of the torsion spring is connected with the torsion spring connecting hole, and the other end of the torsion spring is connected with the connecting seat; the third encoder is fixedly connected with the connecting seat, the third driven synchronous pulley is fixedly connected with the rotating shaft of the third encoder, the third fixed synchronous pulley is fixedly connected with the central shaft, and the third synchronous belt is connected between the third fixed synchronous pulley and the third driven synchronous pulley.
2. The doctor console as claimed in claim 1, wherein the number of torsion spring attachment apertures is more than two.
3. The doctor console of claim 1, wherein the doctor mechanical arm further comprises a brake for locking the second arm lever.
4. The doctor console according to claim 3, wherein the brake for locking the second arm lever comprises a third band-type brake, a band-type brake seat and a synchronous pulley for locking, the band-type brake seat is fixedly connected with the connecting seat, the third band-type brake is fixedly connected with the band-type brake seat, the third band-type brake is provided with a band-type brake block and a shaft hole, a synchronous belt connecting part is arranged on a torsion spring connecting part of the central shaft, the band-type brake seat is connected with a rotating shaft through a bearing, the lower part of the rotating shaft is arranged in the shaft hole of the third band-type brake, and a band-type brake block of the third band-type brake is connected with the rotating shaft through a flat key; the synchronous pulley for locking is fixedly connected with the upper part of the rotating shaft, and the synchronous pulley for locking is connected with the synchronous belt connecting part of the central shaft through a synchronous belt.
5. The doctor console of claim 1, wherein the doctor mechanical arm further comprises a limit piece and a limit pin, the limit piece is fixedly connected with the connecting seat, the limit piece is provided with a limit groove, the limit pin is connected with the body of the central shaft, and the limit pin is located in the limit groove.
6. The doctor console of claim 1, wherein the doctor mechanical arm further comprises a brake for locking the first arm lever.
7. The doctor console of claim 1, wherein the doctor mechanical arm further comprises a brake for locking the swivel connection mount.
8. The doctor console of any one of claims 1-7, wherein the doctor arms are in two groups, a left doctor arm and a right doctor arm, respectively, and the left doctor arm and the right doctor arm are symmetrically arranged.
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| CN201910814368.4A CN110403700B (en) | 2019-08-30 | 2019-08-30 | Doctor operation table |
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| CN201910814368.4A CN110403700B (en) | 2019-08-30 | 2019-08-30 | Doctor operation table |
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| CN110403700B true CN110403700B (en) | 2024-05-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111700680B (en) * | 2019-11-20 | 2024-05-10 | 山东威高手术机器人有限公司 | Translation mechanical arm |
| CN114072089A (en) * | 2020-06-24 | 2022-02-18 | 深圳市越疆科技有限公司 | Mirror supporting arm, mirror supporting device and operating table |
| CN112370168A (en) * | 2020-11-12 | 2021-02-19 | 山东威高手术机器人有限公司 | Minimally invasive surgery robot system |
| CN112370174A (en) * | 2020-11-12 | 2021-02-19 | 山东威高手术机器人有限公司 | Doctor operating table |
| CN112587236A (en) * | 2020-11-13 | 2021-04-02 | 天津大学 | Multifunctional display screen support of minimally invasive surgery robot medical operating table |
| CN112932673B (en) * | 2021-02-03 | 2022-06-03 | 山东省千佛山医院 | Mechanical arm layout structure of minimally invasive surgical robot |
| CN115005976B (en) * | 2022-08-03 | 2022-11-18 | 杭州德适生物科技有限公司 | Intelligent manipulator for surgical operation |
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