CN204337044U - A kind of operating theater instruments end structure of micro-wound operation robot - Google Patents
A kind of operating theater instruments end structure of micro-wound operation robot Download PDFInfo
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- CN204337044U CN204337044U CN201420805940.3U CN201420805940U CN204337044U CN 204337044 U CN204337044 U CN 204337044U CN 201420805940 U CN201420805940 U CN 201420805940U CN 204337044 U CN204337044 U CN 204337044U
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Abstract
This utility model provides a kind of operating theater instruments end structure of micro-wound operation robot, by making the first rotating basis rear end, joint be fixedly connected with the connection cylinder front end of operating theater instruments, the first hinged realization in rotating basis front end, joint and second joint rotating basis rear end bends degree of freedom; By making second joint rotating basis front end and the 3rd rotating basis rear end, joint is hinged realizes rotary freedom; Be installed on the 3rd rotating basis front end, joint by making the 3rd rotating shaft rear end, joint by bearing and realize torsional freedom; By making the front end of the rear end of jaw fixed part and the 3rd joint rotating shaft be connected, and make jaw movable part and jaw fixed part is hinged realizes jaw folding degree of freedom; Above four degree of freedom all control by connecting cylinder interior steel wire rope; Above four degree of freedom simulate shoulder joint, elbow joint, the whole joint motions function of carpal doctor's arm, and the safety of Minimally Invasive Surgery is effectively improved.
Description
Technical field
This utility model relates to technical field of surgical instruments, particularly relates to a kind of operating theater instruments end structure of micro-wound operation robot.
Background technology
The advantages such as wound is little, pain is few, the hospital stays is short because having for Minimally Invasive Surgery, physical function recovery is fast, are more and more subject to the welcome of patient, bring glad tidings to patient.Such as, but the Some features that Minimally Invasive Surgery utensil has self, the automaticity that elongated surgical utensil is limited, limited visual field and mirror movements effect etc., make to propose requirements at the higher level when enforcement Minimally Invasive Surgery to doctor.In recent years, the operation caused to doctor to solve traditional Minimally Invasive Surgery utensil performs obstacle, the teleoperation robot technology of master-slave mode is introduced in Minimally Invasive Surgery, as Leonardo da Vinci's operating robot (Intuitive Surgical, Inc.), the maximum advantage of this master-slave minimally-invasive surgery robot is the introduction of multivariant operation technique arm to increase the motility of surgical instrument, introduces the surgical scene image display technology of such as high-resolution in addition, eliminates operative doctor and to tremble technology etc.
In order to simulate open procedures Chinese and foreign department doctor's shoulder joint and carpal motion to greatest extent, common minimally invasive surgical operation robot is traditionally arranged to be 6 from end motion arm number of degrees of freedom.In robot micro-wound surgical operation, patient's focus can be arrived to realize operating theater instruments end, needing on the wall of patient chamber, open 4-5 diameter before operation starts is the otch of 10mm, and elongated surgical instrument realizes the operation technique to patient's lesions position by these otch.But these little otch limit surgical instrument 2 degree of freedom, in order to simulate doctor's arm motion, this just makes the surgical instrument degree of freedom outside patient body must reach 4.4 degree of freedom of this outside simulate the shoulder joint kinesitherapy situation of surgeon in open surgery, and surgical instrument 2 the degree of freedom ends in patient body are for simulating the motion of surgical wrist 2 degree of freedom.
As U.S. Utility Patent US2010/0004663A1, name is called " Surgical Instrument Wrist ", disclose a kind of Minimally Invasive Surgery utensil with 6 degree of freedom, surgical instrument end wherein in patient body has two degree of freedom, and the surgical instrument stayed outside patient body is 4 degree of freedom.But two rotating shafts of this surgical instrument end are not in same axial plane, and this makes end two degree of freedom be coupled, when driver sends drive singal to a joint time, two joints are caused to be linked.In addition, the end of this surgical instrument cannot realize separately along the rotary motion in surgical instrument direction of insertion, and this rotary motion must realize by means of other rotating shafts be arranged on outside patient body.
U.S. Utility Patent US7819884B2, name is called " Robotically Controlled Medical Instrument ", disclose a kind of multiple degrees of freedom surgical instrument be made up of series connection hinge, this surgical instrument can realize the Flexible Control to operation implement end executor pose.But surgical instrument end disclosed in this utility model only has a clamp system, also cannot realize the rotation process of end joint along surgical instrument direction of insertion simultaneously.
Document [" Development of a dexterous minimally-invasive surgical system " (J.Arata, S.Warisawa, M.Hashizume, and M.Mitsuishi, IFMBE Proceedings, 2007, 14 (6): 4153-4156)] (Chinese: a kind of exploitation of minimally invasive surgery system of dexterity) develops a dexterity, there is the surgical robot system of force feedback function, the surgical instrument end of this system adopts the linkage of rigidity to realize 3 the degree of freedom motions of surgical instrument end joint in patient body.But the end joint of the surgical instrument that connecting rod drives has larger frictional force when rotary motion, and this has higher requirement to the driving force of joint driver.In addition, the end of this surgical instrument can not realize independent rotary motion.
Document [" Development of a Medical Robot System for Minimally Invasive Surgery " (M.Feng, Y.Fu, B.Pan, C.Liu, The International Journal of Medical Robotics and Computer Assisted Surgery, 2011, 8 (1): 85-96)] (Chinese: a kind of exploitation being applicable to the medical robotic system of Minimally Invasive Surgery) proposes a kind of minimally invasive robotic surgery apparatus with 4 degree of freedom, the end rotary freedom of this operating theater instruments has been come by other rotary joints be arranged on outside patient body.
Document [mechanism design of the micro-apparatus of a kind of novel robot Minimally Invasive Surgery and kinematics analysis, Ma Ruqi, Wang Wei east, Dong Wei, Du Zhijiang, robot, 2013,35 (4): 402-409.] develop a kind of micro-wound operation robot operating theater instruments with flexible joint using steel wire to drive.Equally, the end joint of this operating theater instruments does not arrange independent rotary joint yet, cannot realize independent rotary motion.
In sum, current common micro-wound operation robot surgical instrument adopts shoulder joint 4 degree of freedom motions of simulation doctor arm to move with 2 degree of freedom of wrist usually, lacks the freedom of motion of simulation doctor arm elbow joint.In the case, when operative doctor wishes to do the rotary motion of utensil direction of insertion to operation implement end time, must could realize this operation technique by means of the surgical instrument movable joint of surgical instrument outside patient body, this must need the rotary motion of the larger angle whole surgical instrument being done to a direction of insertion.But in the current most Minimally Invasive Surgery operations implemented in patient body, the operation technique space leaving doctor for is very narrow and small, the rotary motion of above-mentioned wide-angle is easy to surprisingly to touch, even scratch other important organs, cause accidental haemorrhage, even threaten patient vitals's safety.
Summary of the invention
The shortcoming of prior art in view of the above, the technical problems to be solved in the utility model is to provide a kind of operating theater instruments end structure of micro-wound operation robot can simulating shoulder joint, elbow joint, the whole joint motions function of carpal doctor's arm, to overcome the above-mentioned defect of prior art.
In order to solve the problems of the technologies described above, this utility model provides a kind of operating theater instruments end structure of micro-wound operation robot, comprises and connects cylinder, the first joint rotating basis, second joint rotating basis, the 3rd joint rotating basis, the first joint rotating shaft, second joint rotating shaft, the 3rd joint rotating shaft, jaw fixed part, jaw movable part, back-moving spring;
The rear end of described first joint rotating basis is fixedly connected with the described front end being connected cylinder, the front end of described first joint rotating basis and the rear end of described second joint rotating basis realize hinged by the first joint rotating shaft, the front end of described second joint rotating basis and the rear end of described 3rd joint rotating basis realize hinged by second joint rotating shaft, described first joint rotating shaft and described second joint rotational axis vertical are arranged, and the rear end of described 3rd joint rotating shaft is installed on the front end of described 3rd joint rotating basis by bearing;
The rear end of described jaw fixed part is fixedly connected with the front end of described 3rd joint rotating shaft; Described jaw movable part is L shape, comprises jaw clamp arm and linking arm, the junction of jaw clamp arm and linking arm and the rear end of described jaw fixed part hinged, the end of linking arm is flexibly connected with a jaw internal activity block; Described jaw internal activity block is under jaw drives the drive of steel wire rope, axially move in the inside of the 3rd joint rotating shaft, jaw drives steel wire penetrating to connect the endoporus of cylinder, the first joint rotating basis, second joint rotating basis, the 3rd joint rotating basis and the 3rd joint rotating shaft, be connected with jaw internal activity block, described back-moving spring is located between described jaw internal activity block and the 3rd joint rotating shaft;
The rear end of described second joint rotating basis is provided with two first and drives steel wire rope, two first both sides driving steel wire rope to be located at the first joint rotating shaft, two first drive the endoporus and the first joint rotating basis that connect cylinder described in steel wire penetrating, be connected with second joint rotating basis, drive described second joint rotating basis to swing around the first joint rotating shaft;
The rear end of described 3rd joint rotating basis is provided with two second and drives steel wire rope, two second both sides driving steel wire rope to be located at second joint rotating shaft, two second endoporus, the first joint rotating basis and the second joint rotating basiss driving steel wire penetrating to connect cylinder, be connected with the 3rd joint rotating basis, drive described 3rd joint rotating basis to swing around second joint rotating shaft;
The rear end of described 3rd joint rotating shaft is provided with two the 3rd and drives steel wire rope, two the 3rd endoporus, the first joint rotating basis, second joint rotating basis and the 3rd joint rotating basiss driving steel wire penetrating to connect cylinder, be wrapped on the 3rd joint rotating shaft and form winding around, drive described 3rd joint rotating shaft to rotate in bearing.
Preferably, described first joint rotating basis comprises the first U-shaped fork of its front end; Described second joint rotating basis comprises the second U-shaped fork and the 3rd U-shaped fork on common chassis, and described second U-shaped vent is in the rear end of described second joint rotating basis, and described 3rd U-shaped vent is in the front end of described second joint rotating basis; The two side arms that the two side arms of described second U-shaped fork and described 3rd U-shaped are pitched is arranged vertically; Described 3rd joint rotating basis comprises the 4th U-shaped fork of its rear end; The two side arms of described second U-shaped fork is clamped between the two side arms of described first U-shaped fork, realizes hinged by the first joint rotating shaft; The two side arms of described 4th U-shaped fork is clamped between the two side arms of described 3rd U-shaped fork, realizes hinged by second joint rotating shaft.
Preferably, second joint driving wheel is provided with between the two side arms of described second U-shaped fork, described second joint driving wheel is pitched with described second U-shaped and is fixedly connected with, described second joint driving wheel and described first joint rotating basis are also hinged by described first joint rotating shaft, and described two first drive the wheel rim of steel wire rope and described second joint driving wheel to fix.
Preferably, the 3rd joint driving wheel is provided with between the two side arms of described 4th U-shaped fork, described 3rd joint driving wheel is pitched with described 4th U-shaped and is fixedly connected with, described 3rd joint driving wheel is with also hinged by described second joint rotating shaft with described second joint rotating basis, and described two second drive the wheel rim of steel wire rope and described 3rd joint driving wheel to fix.
Preferably, the two side arms of described first U-shaped fork being equipped with groove, in described groove, being respectively equipped with a pair directive wheel for driving steel wire rope to lead to described second.
Preferably, the end of described linking arm is realized by a connecting rod with being flexibly connected between described jaw internal activity block, one end of described connecting rod and the end of described linking arm hinged, the other end and the described jaw internal activity block of described connecting rod are hinged.
As mentioned above, the operating theater instruments end structure of micro-wound operation robot of the present utility model, has following beneficial effect:
Hinged by the first joint rotating basis and second joint rotating basis, achieves the bending degree of freedom of operating theater instruments end; Hinged by second joint rotating basis and the 3rd joint rotating basis, achieves the rotary freedom of operating theater instruments end; By the bearing fit between the 3rd joint rotating shaft and the 3rd joint rotating basis, achieve the torsional freedom of operating theater instruments end; By the setting of jaw fixed part and jaw movable part, achieve the jaw folding degree of freedom of operating theater instruments end; Operating theater instruments end is enable to simulate shoulder joint, elbow joint, the whole joint motions function of carpal doctor's arm, avoid the rotary motion of the larger angle in direction of insertion that freedom of motion that prior art surgical instrument can not simulate doctor's arm elbow joint causes, the safety of Minimally Invasive Surgery is effectively improved.
Accompanying drawing explanation
Fig. 1 is shown as the operating theater instruments end structure of micro-wound operation robot of the present utility model and the mutual joint freedom degrees distribution schematic diagram of body cavity.
Fig. 2 is shown as the population structure schematic diagram of the operating theater instruments residing for operating theater instruments end structure of micro-wound operation robot of the present utility model.
Fig. 3 is shown as the structural representation of the operating theater instruments end structure of micro-wound operation robot of the present utility model.
The realization that Fig. 4 is shown as the operating theater instruments end structure of micro-wound operation robot of the present utility model bends the partial structurtes schematic diagram of degree of freedom, rotary freedom and torsional freedom.
Fig. 5 is shown as the decomposing schematic representation of Fig. 4.
Fig. 6 is shown as the partial structurtes schematic diagram realizing torsional freedom, jaw folding degree of freedom of the operating theater instruments end structure of micro-wound operation robot of the present utility model.
Fig. 7 is shown as the partial structurtes schematic diagram realizing jaw folding degree of freedom of the operating theater instruments end structure of micro-wound operation robot of the present utility model.
Fig. 8 is shown as the structural representation of Fig. 7 after removing spring spool.
Fig. 9 is shown as the annexation schematic diagram between the jaw internal activity block of the operating theater instruments end structure of micro-wound operation robot of the present utility model, connecting rod and jaw movable part.
Figure 10 is shown as the decomposing schematic representation of Fig. 7.
Element numbers explanation
1 connects cylinder 100 first joint rotating basis
101 securing member 110 first U-shaped forks
111 groove 120 directive wheels
200 second joint rotating basiss 201 first drive steel wire rope
202 first drive steel wire rope 210 second U-shaped fork
220 the 3rd U-shapeds pitch 230 second joint driving wheels
231 securing members 300 the 3rd joint rotating basis
301 second drive steel wire rope 302 second to drive steel wire rope
310 the 4th U-shaped fork 320 the 3rd joint driving wheels
321 securing member 410 first joint rotating shafts
420 second joint rotating shaft 430 the 3rd joint rotating shafts
431 the 3rd drive steel wire rope 432 the 3rd to drive steel wire rope
433 winding around 434 pilot holes
435 bearing 510 jaw fixed parts
511 hinge hole 512 pilot holes
520 jaw movable part 521 jaw clamp arms
522 linking arms 523 the 4th joint rotating shaft
524 pilot hole 525 hinge holes
530 back-moving spring 531 flange nuts
540 jaw internal activity block 541 steel wire rope connecting holes
542 hinge hole 550 jaws drive steel wire rope
551 hinging pin shaft 552 hinging pin shafts
553 pilot hole 554 pilot holes
560 connecting rod 600 spring spools
601 securing member 610 pilot holes
Detailed description of the invention
By particular specific embodiment, embodiment of the present utility model is described below, person skilled in the art scholar the content disclosed by this description can understand other advantages of the present utility model and effect easily.
Refer to Fig. 1 to Figure 10.Notice, structure, ratio, size etc. that this description institute accompanying drawings illustrates, content all only in order to coordinate description to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of this utility model, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that this utility model can produce and the object that can reach, still all should drop on technology contents that this utility model discloses and obtain in the scope that can contain.The upper left side observing paper during Fig. 3 in following examples is the rear extreme direction of each parts, and the lower right side of paper is the front extreme direction of each parts.
In view of current common micro-wound operation robot surgical instrument adopts shoulder joint 4 degree of freedom motions of simulation doctor arm to move with 2 degree of freedom of wrist usually, lack the freedom of motion of simulation doctor arm elbow joint; In the case, when operative doctor wishes to do the rotary motion of utensil direction of insertion to operation implement end time, must could realize this operation technique by means of the surgical instrument movable joint of surgical instrument outside patient body, this must need the rotary motion of the larger angle whole surgical instrument being done to a direction of insertion; But in the current most Minimally Invasive Surgery operations implemented in patient body, the operation technique space leaving doctor for is very narrow and small, the rotary motion of above-mentioned wide-angle is easy to surprisingly to touch, even scratch other important organs, cause accidental haemorrhage, even threaten patient vitals's safety.Inventor of the present utility model designs a kind of operating theater instruments end structure of micro-wound operation robot, by arranging bending degree of freedom, rotary freedom, torsional freedom and jaw folding degree of freedom, operating theater instruments end is enable to simulate shoulder joint, elbow joint, the whole joint motions function of carpal doctor's arm, avoid the rotary motion of the larger angle in direction of insertion that freedom of motion that prior art surgical instrument can not simulate doctor's arm elbow joint causes, the safety of Minimally Invasive Surgery is effectively improved.
Below, be described in detail by the operating theater instruments end structure of specific embodiment to micro-wound operation robot of the present utility model.
First, as shown in Figure 1, the operating theater instruments of micro-wound operation robot through body cavity wall, realizes the operation of operating theater instruments end to patient's focus by medical trocar.Operating theater instruments has four degree of freedom (three rotational freedoms and a direct acting degree of freedom) outside body cavity wall, also has four degree of freedom (bending degree of freedom, rotary freedom, torsional freedom and end folding degree of freedom) at body cavity pars intramuralis.Torsional freedom in body cavity realizes doing axis rotation to end folding joint, and the twist motion function of simulation doctor elbow joint, in this twist process, relative motion need not be done in other joint.
As shown in Figure 2, the operating theater instruments of micro-wound operation robot of the present utility model comprises joint driver composite module A, end four-degree-of-freedom joint B (i.e. the operating theater instruments end structure of micro-wound operation robot of the present utility model).Wherein, joint driver composite module A is primarily of drive motors, encoder composition, and drive motors is connected with end four-degree-of-freedom joint B by superfine driving steel wire rope, realizes the motion control function in each joint in end four-degree-of-freedom joint B.
As shown in Figure 3, the simulation of operating theater instruments end structure shoulder joint, elbow joint, the whole joint motions function of carpal doctor's arm of micro-wound operation robot of the present utility model, comprise bending degree-of-freedom joint O
1, rotary freedom joint O
2, torsional freedom joint O
3with jaw folding degree-of-freedom joint O
4.
As shown in Fig. 3, Fig. 4, Fig. 5, bending degree-of-freedom joint O
1specifically comprise following content: the first joint rotating basis 100, second joint rotating basis 200, first joint rotating shaft 410.
As shown in Figure 5, described first joint rotating basis 100 comprises the first U-shaped fork 110 of its front end; Described second joint rotating basis 200 comprises the second U-shaped fork 210 and the 3rd U-shaped fork 220 on common chassis, described second U-shaped fork 210 is positioned at the rear end of described second joint rotating basis 200, and described 3rd U-shaped fork 220 is positioned at the front end of described second joint rotating basis 200; The two side arms that the two side arms of described second U-shaped fork 210 and described 3rd U-shaped pitch 220 is arranged vertically.
The rear end of described first joint rotating basis 100 is fixedly connected with the described front end being connected cylinder 1 by securing member 101, the two side arms of the second U-shaped fork 210 of described second joint rotating basis 200 rear end is clamped between the two side arms of the first U-shaped fork 110 of described first joint rotating basis 100 front end, realizes hinged by the first joint rotating shaft 410.
Second joint driving wheel 230 is provided with between the two side arms of described second U-shaped fork 210, described second joint driving wheel 230 is pitched 210 with described second U-shaped and is achieved a fixed connection by securing member 231, described second joint driving wheel 230 also realizes hinged by the first joint rotating shaft 410 with described first joint rotating basis 100, the rear end of described second joint rotating basis 200 is provided with two first and drives steel wire rope (namely first driving steel wire rope 201 and first to drive steel wire rope 202), two first both sides driving steel wire rope (namely first driving steel wire rope 201 and first to drive steel wire rope 202) to be located at the first joint rotating shaft 410, and fix with the wheel rim of described second joint driving wheel 230, two first drive steel wire rope 201, 202 through described first joint rotating basis 100 and the endoporus being connected cylinder 1, be connected with drive motors, described second joint rotating basis 200 is driven to swing around the first joint rotating shaft 410, realize the curvature movement function in end joint.
As shown in Fig. 3, Fig. 4, Fig. 5, rotary freedom joint O
2specifically comprise following content: second joint rotating basis 200, the 3rd joint rotating basis 300, second joint rotating shaft 420.
As shown in Figure 5, described 3rd joint rotating basis 300 comprises the 4th U-shaped fork 310 of its rear end; The two side arms of described 4th U-shaped fork 310 is clamped between the two side arms of the 3rd U-shaped fork 220 of second joint rotating basis 200 front end, realizes hinged by second joint rotating shaft 420.
The 3rd joint driving wheel 320 is provided with between the two side arms of described 4th U-shaped fork 310, described 3rd joint driving wheel 320 is pitched 310 with described 4th U-shaped and is achieved a fixed connection by securing member 321, described 3rd joint driving wheel 320 also realizes hinged by second joint rotating shaft 420 with described second joint rotating basis 200, the rear end of described 3rd joint rotating basis 300 is provided with two second and drives steel wire rope (namely second driving steel wire rope 301 and second to drive steel wire rope 302), two second drive steel wire rope 301, 302 both sides being located at second joint rotating shaft 420, and fix with the wheel rim of described 3rd joint driving wheel 320, two second drive steel wire rope 301, 302 through described second joint rotating basis 200, first joint rotating basis 100 and the endoporus being connected cylinder 1, be connected with drive motors and drive described 3rd joint rotating basis 300 to swing around second joint rotating shaft 420, realize the rotation function in end joint.
As shown in Figure 5, preferably, the two side arms of described first U-shaped fork 110 being equipped with groove 111, being respectively provided with a pair in each groove 111 for driving steel wire rope 301 and the second directive wheel 120 driving steel wire rope 302 to lead to described second; The setting of directive wheel makes described second to drive steel wire rope 301 and second to drive steel wire rope 302 to pass perpendicularly through from the shaft core position at the first joint rotating shaft 410 two ends, achieves bending degree-of-freedom joint O
1with rotary freedom joint O
2mobile decoupling, i.e. rotary freedom joint O
2motion drive the 3rd joint rotating basis 300 is rotated, and this rotary motion can not be subject to the impact of the first joint rotating shaft 410.
As shown in Fig. 4, Fig. 5, Fig. 6, torsional freedom joint O
3specifically comprise following content: the 3rd joint rotating basis 300, bearing 435, the 3rd joint rotating shaft 430.
As shown in Figure 4, Figure 5, the front end of described 3rd joint rotating basis 300 is located at by described bearing 435.As shown in Figure 6, the described rear end of the 3rd joint rotating shaft 430 and the inner hole of described bearing 435.The front end of described 3rd joint rotating shaft 430 is provided with two the 3rd and drives steel wire rope (namely the 3rd driving steel wire rope 431 and the 3rd to drive steel wire rope 432), two the 3rd drive steel wire rope 431, 432 form winding around 433 on the 3rd joint rotating shaft 430, and two the 3rd drive steel wire rope 431, 432 through the sidewall of described 3rd joint rotating basis 300, second joint rotating basis 200, first joint rotating basis 100, the endoporus connecting cylinder 1 is connected with drive motors, by the aggregate motion of straining and relax, described 3rd joint rotating shaft 430 is driven to rotate in bearing 435, realize the twist motion function in end joint.
As shown in Fig. 6 to Figure 10, end folding degree-of-freedom joint O
4specifically comprise following content: the 3rd joint rotating shaft 430, jaw fixed part 510, jaw movable part 520, back-moving spring 530.
The rear end of described jaw fixed part 510 is fixedly connected with the front end of described 3rd joint rotating shaft 430; Described jaw movable part 520 is L shape, comprise jaw clamp arm 521 and linking arm 522, the connecting portion of jaw clamp arm 521 and linking arm 522 is provided with pilot hole 524, pilot hole 524 is hinged with the hinge hole 511 of the rear end of described jaw fixed part 510 by the 4th joint rotating shaft 523, and the end of linking arm 522 is flexibly connected with a jaw internal activity block 540; Described jaw internal activity block 540 is under jaw drives the drive of steel wire rope 550 (jaw drives the end of steel wire rope 550 to fasten on the steel wire rope connecting hole 541 of jaw internal activity block 540), axially move in the inside of the 3rd joint rotating shaft 430, jaw drives steel wire rope 550 through the endoporus of described 3rd joint rotating shaft 430, the 3rd joint rotating basis 300, second joint rotating basis 200, first joint rotating basis 100, connection cylinder 1, is connected with drive motors; Described back-moving spring 530 is located between described jaw internal activity block 540 and the 3rd joint rotating shaft 430.When straining jaw and driving steel wire rope 550, when band movable clamp port internal activity block 540 moves backward, described back-moving spring 530 is compressed, and described jaw movable part 520 realizes closed relative to described jaw fixed part 510; Unclamp jaw and drive steel wire rope 550, then back-moving spring 530 makes jaw internal activity block 540 move forward, thus jaw movable part 520 automatically opens relative to described jaw fixed part 510; Realize the open and close movement function in end joint thus.
As shown in Figure 10, preferably, the rear end of described jaw internal activity block 540 is also connected with flange nut 531, and described flange nut 531 forms the spring base supporting described back-moving spring 530 front end.
As Fig. 9, shown in Figure 10, the end of described linking arm 522 realizes preferably by a connecting rod 560 with being flexibly connected between described jaw internal activity block 540, hinged (one end of connecting rod 560 is provided with hinging pin shaft pilot hole 553 for one end of described connecting rod 560 and the end of described linking arm 522, the end of linking arm 522 is provided with hinge hole 525, in hinging pin shaft pilot hole 553 and hinge hole 525, hinging pin shaft 551 is installed), hinged (other end of connecting rod 560 is provided with hinging pin shaft pilot hole 554 for the other end of described connecting rod 560 and described jaw internal activity block 540, the front end of jaw internal activity block 540 is provided with hinge hole 542, in hinging pin shaft pilot hole 554 and hinge hole 542, hinging pin shaft 552 is installed), movable clamp port movable part 520 can be with reposefully to rotate to make the rectilinear motion of jaw internal activity block 540.
As shown in Figure 10, the outside of described back-moving spring 530 is preferably provided with spring spool 600, the two ends of described spring spool 600 are respectively equipped with pilot hole 610, the rear end of described spring spool 600 is fixed with the pilot hole 434 of the front end of described 3rd joint rotating shaft 430 by being located at the securing member 601 (see Fig. 7) in pilot hole 610, and the front end of described spring spool 600 is fixed with the pilot hole 512 of the rear end of described jaw fixed part 510 by being located at the securing member 601 in pilot hole 610.The setting of spring spool 600 make the structure of the 3rd joint rotating shaft 430, jaw fixed part 510 simple, be convenient to process and assemble; Certainly, also spring spool 600 can be designed to a part for the 3rd joint rotating shaft 430 or jaw fixed part 510.
In sum, the operating theater instruments end structure of micro-wound operation robot of the present utility model comprises bending degree-of-freedom joint, rotary freedom joint, torsional freedom joint and jaw folding degree-of-freedom joint, shoulder joint, elbow joint, the whole joint motions function of carpal doctor's arm can be simulated, avoid the rotary motion of the larger angle in direction of insertion that freedom of motion that prior art surgical instrument can not simulate doctor's arm elbow joint causes, the safety of Minimally Invasive Surgery is effectively improved.So this utility model effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting this utility model.Any person skilled in the art scholar all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that this utility model discloses, must be contained by claim of the present utility model.
Claims (6)
1. the operating theater instruments end structure of a micro-wound operation robot, it is characterized in that, comprise and connect cylinder (1), the first joint rotating basis (100), second joint rotating basis (200), the 3rd joint rotating basis (300), the first joint rotating shaft (410), second joint rotating shaft (420), the 3rd joint rotating shaft (430), jaw fixed part (510), jaw movable part (520), back-moving spring (530);
The rear end of described first joint rotating basis (100) is fixedly connected with the described front end being connected cylinder (1), the front end of described first joint rotating basis (100) and the rear end of described second joint rotating basis (200) realize hinged by the first joint rotating shaft (410), the front end of described second joint rotating basis (200) and the rear end of described 3rd joint rotating basis (300) realize hinged by second joint rotating shaft (420), described first joint rotating shaft (410) and described second joint rotating shaft (420) vertical arrangement, the rear end of described 3rd joint rotating shaft (430) is installed on the front end of described 3rd joint rotating basis (300) by bearing (435),
The rear end of described jaw fixed part (510) is fixedly connected with the front end of described 3rd joint rotating shaft (430), described jaw movable part (520) is L shape, comprise jaw clamp arm (521) and linking arm (522), the junction of jaw clamp arm (521) and linking arm (522) and the rear end of described jaw fixed part (510) hinged, the end of linking arm (522) is flexibly connected with a jaw internal activity block (540), described jaw internal activity block (540) is under jaw drives the drive of steel wire rope (550), axially move in the inside of the 3rd joint rotating shaft (430), jaw drives steel wire rope (550) through the endoporus connecting cylinder (1), first joint rotating basis (100), second joint rotating basis (200), 3rd joint rotating basis (300) and the 3rd joint rotating shaft (430), be connected with jaw internal activity block (540), described back-moving spring (530) is located between described jaw internal activity block (540) and the 3rd joint rotating shaft (430),
The rear end of described second joint rotating basis (200) is provided with two first and drives steel wire rope (201,202), two first both sides driving steel wire rope (201,202) to be located at the first joint rotating shaft (410), two first drive steel wire rope (201,202) through the endoporus of described connection cylinder (1) and the first joint rotating basis (100), be connected with second joint rotating basis (200), drive described second joint rotating basis (200) to swing around the first joint rotating shaft (410);
The rear end of described 3rd joint rotating basis (300) is provided with two second and drives steel wire rope (301, 302), two second drive steel wire rope (301, 302) both sides of second joint rotating shaft (420) are located at, two second drive steel wire rope (301, 302) through the endoporus connecting cylinder (1), first joint rotating basis (100) and second joint rotating basis (200), be connected with the 3rd joint rotating basis (300), described 3rd joint rotating basis (300) is driven to swing around second joint rotating shaft (420),
The rear end of described 3rd joint rotating shaft (430) is provided with two the 3rd and drives steel wire rope (431,432), two the 3rd endoporus, the first joint rotating basis (100), second joint rotating basis (200) and the 3rd joint rotating basiss (300) driving steel wire rope (431,432) to pass connection cylinder (1), be wrapped on the 3rd joint rotating shaft (430) and form winding around (433),, drive described 3rd joint rotating shaft (430) to rotate in bearing (435).
2. the operating theater instruments end structure of micro-wound operation robot according to claim 1, is characterized in that: described first joint rotating basis (100) comprises the first U-shaped fork (110) of its front end; Described second joint rotating basis (200) comprises the second U-shaped fork (210) and the 3rd U-shaped fork (220) on common chassis, described second U-shaped fork (210) is positioned at the rear end of described second joint rotating basis (200), and described 3rd U-shaped fork (220) is positioned at the front end of described second joint rotating basis (200); The two side arms that the two side arms of described second U-shaped fork (210) and described 3rd U-shaped pitch (220) is arranged vertically; Described 3rd joint rotating basis (300) comprises the 4th U-shaped fork (310) of its rear end; The two side arms of described second U-shaped fork (210) is clamped between the two side arms of described first U-shaped fork (110), realizes hinged by the first joint rotating shaft (410); The two side arms of described 4th U-shaped fork (310) is clamped between the two side arms of described 3rd U-shaped fork (220), realizes hinged by second joint rotating shaft (420).
3. the operating theater instruments end structure of micro-wound operation robot according to claim 2, it is characterized in that: between the two side arms of described second U-shaped fork (210), be provided with second joint driving wheel (230), described second joint driving wheel (230) is pitched (210) with described second U-shaped and is fixedly connected with, described second joint driving wheel (230) is hinged by described first joint rotating shaft (410) with described first joint rotating basis (100), described two first drive steel wire rope (201, 202) fix with the wheel rim of described second joint driving wheel (230).
4. the operating theater instruments end structure of micro-wound operation robot according to claim 2, it is characterized in that: between the two side arms of described 4th U-shaped fork (310), be provided with the 3rd joint driving wheel (320), described 3rd joint driving wheel (320) is pitched (310) with described 4th U-shaped and is fixedly connected with, described 3rd joint driving wheel (320) is hinged by described second joint rotating shaft (420) with described second joint rotating basis (200), described two second drive steel wire rope (301, 302) fix with the wheel rim of described 3rd joint driving wheel (320).
5. the operating theater instruments end structure of micro-wound operation robot according to claim 4, it is characterized in that: the two side arms of described first U-shaped fork (110) is equipped with groove (111), in described groove (111), being respectively equipped with a pair directive wheel (120) for driving steel wire rope (301,302) to lead to described second.
6. the operating theater instruments end structure of micro-wound operation robot according to claim 1, it is characterized in that: the end of described linking arm (522) is realized by a connecting rod (560) with being flexibly connected between described jaw internal activity block (540), one end of described connecting rod (560) and the end of described linking arm (522) hinged, the other end and the described jaw internal activity block (540) of described connecting rod (560) are hinged.
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| CN201420805940.3U CN204337044U (en) | 2014-12-17 | 2014-12-17 | A kind of operating theater instruments end structure of micro-wound operation robot |
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| CN201420805940.3U CN204337044U (en) | 2014-12-17 | 2014-12-17 | A kind of operating theater instruments end structure of micro-wound operation robot |
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