CN2726562Y - Acetabular cup implantation positioning device - Google Patents

Abstract

The utility model relates to a cotyle cup implantation positioning device which comprises a reference mechanism, angle and linear displacement mechanisms and a guide bar, wherein the reference mechanism comprises a bar body bone fixer and a reference device which is detachably connected with the bone fixer. The reference device comprises a universal joint, a reference bar, an angle scale which can be locked on the reference bar and a level instrument. The universal joint is provided with an indicating device which locks the reference bar, and an angle rotating device. The reference mechanism also comprises an indicating bar which is adjustable in length, and both ends of the indicating bar are crossed and detachably connected with indicating needles. A cross coupling joint is vertically connected with a certain end of the indicating bar, and a loop bar of which one end is vertically fixedly connected with a bar sleeve which is detachably sheathed with the reference bar. The guide bar is connected with the angle and linear displacement mechanisms which can be all detachably connected with the reference bar. The utility model has the advantages of economy, utility, continuous positioning reference display during operation, patients' body position disturbance prevention and accurate positioning.

Description

Acetabular cup is implanted positioner

[technical field]

This utility model relates to a kind of bone surgery apparatus, and more particularly, this utility model relates to a kind of location of operation apparatus of implanting the displacement acetabular cup.

[background technology]

Total hip replacement operation is annual enforcement more than 1,000,000 examples in the whole world, and in these operations, the replacement of total hip backward dislocation is a serious and common complication, and incidence rate is only second to prosthetic loosening.The replacement of total hip backward dislocation incidence rate of report is 0.5%～12% at present, and undue influences such as subjective factors instability, inaccuracy cause the suitable vast scale of accounting for of dislocation of hip joint and other complication in the acetabular component location owing to implanting.

Chinese scholars is inserted the location to the mortar cup in the replacement of total hip and has been done more trial at present, as adopting microcephaly's localizer, can reduce the art open country and block, and makes the topography structure more clear; Adopt mechanical location technology or the laser positioning technology is combined with mechanical location technology, all can improve the mortar cup and insert directed precision.

Adopting the application number that has of microcephaly's localizer is 97106792.9 Chinese patent file, this article discloses a kind of retraction type manual acetabular bone imbedding system, comprise acetabular cup, it is characterized in that: system ontology also has an inserter, this inserter is made up of a long handle and the plate that is located at this long handle front end, long handle is provided with the hook sleeve, this hook sleeve is provided with holding screw, an end that is provided with hook in the hook sleeve on the long handle is provided with urgent nut, hold-down nut successively, link up with telescopic hook and be provided with and hang circle, this hangs the acetabular cup of circle connection cover on plate.It is simple and convenient to it is said that manual acetabulum cup is inserted in the operation of this system, and can reduce operating time and sufferer is lost blood, and guarantees to insert the directed quality of fixed point of manual acetabulum, increases the success rate of operation.

The application number in addition that adopts microcephaly's localizer is 01813446.7 Chinese patent file, this article discloses one group of apparatus that is used to insert an acetabular component, it has at least one a shaping acetabular bone spare and a bar, bar connect with this shaping acetabular bone spare in the axial direction and at one end on a fastener that will link to each other with a corresponding fastener on shaping acetabular bone spare is arranged.For guaranteeing that fastener can be drawn close by easily in the surgical area of regulation on guiding ground mutually, the fastener on shaping acetabular bone spare is surrounded by a spigot surface of guiding rod end into it.

Adopting the application number that has of mechanical location technology is 99227595.4 Chinese patent file, this document discloses a kind of total hip joint acetabular bone localizer, its main feature is to be made of locating support, angle bracket and stick, utilize the natural relation of human body acetabular bone and pelvis, selected pelvis bone anchor point is as fixed point, orientation axis in nature axis and the art is ingenious corresponding, got rid of the influence of position factor in operator's individual factor and the patient's art fully, to locate quantification, adapt to various total hip prostheseses.It is said that this technology helps improving quality of medical care, reduce the service life of sequela and prolongation total hip prostheses, have very high social benefit.But in fact, though the localizer that this technology adopts is bikini and may is to adopt two anterior superior iliac spine of patient's pelvis to add pubic symphysis to make basis on location, but can not guarantee the complete level of localizer, the nail fixed performance is not clear, perhaps only allow the patient in art, to take the position that lies low, perhaps can not in art, continue to show the orientation and the angle of pelvis and acetabular fossa, not allow some doctor or patient to cooperate and operate that adaptability and positioning accuracy are all bad.

The application number in addition that adopts mechanical location technology is 02276911.0 Chinese patent file, this document discloses a kind of Acetabulum cap localizer, this localizer is provided with the positioner of being made up of hypotenuse locating rod, rectangular-shaped locating rod, quadrature locating rod on the direct rod shape press rods, big leg outer side center line that can the patient is the reference standard angle of splay that realizes Acetabulum cap, the location of top rake, solve the Acetabulum cap location and will rely on patient's experience and the problem that range estimation is finished, and press rods is a straight-bar, do not change the pressure direction of transfer, do not influence the pressing effect of Acetabulum cap.It is said that this technology can reduce the risk of this operation, to the also significantly reduction of clinical experience requirement of operative doctor.But the rectangular-shaped locating rod that this technology adopts is the big leg outer side center line with the patient is the reference standard angle of splay that realizes Acetabulum cap, the location of top rake, and location benchmark randomness is too big, and the positioning accuracy error is very big.

At present, the method that combines with mechanical location technology of microcephaly's localizer, pure mechanical location technology or laser positioning technology no matter, increase though all insert on the controlling of angle at the mortar cup, but all can not accomplish in art, to continue to show the orientation and the angle of pelvis and acetabular fossa, therefore, above-mentioned all methods do not allow the doctor according to actual needs the adjustment set angle carry out the mortar cup and insert, do not allow the Different Individual feature of doctor according to the patient yet, choose different operative incisions, determine different operation positions, and do not allow according to the patient.

In addition, the Hip Nav technology of now developing is for solving acetabular cup the measurement monitoring system that designs to be installed accurately in conjunction with computer science, engineering and surgery's knowledge, the axis that can in art, continue accurately to measure the position of pelvis and detect the interplantation prosthese, but because the cost of equipment costliness, at present domesticly still can not popularize.

[summary of the invention]

Above-mentioned shortcoming at prior art, the technical purpose that this utility model will reach is to provide a kind of economical and practical acetabular cup to implant positioner, the detent mechanism of this device can continue to show localized benchmark in art, detent mechanism and location benchmark thereof are not subjected to the interference of Body Position Change in patient's art, and the location accurately, thereby allow the doctor to regulate set angle and patient body position neatly, guide inserting of mortar cup correctly, efficiently according to location benchmark and actual needs in art.

For this reason, the technical solution of the utility model is that a kind of acetabular cup is implanted positioner, this acetabular cup is implanted positioner and is comprised benchmark mechanism, angle and straight-line displacement mechanism and acetabular cup implantation guide post, and benchmark mechanism comprises the bone anchor that has the body of rod and removably be connected standard on this bone anchor, but described standard comprises interconnective universal joint and baseline rod and lock tube angle scale and the level indicator on baseline rod, and described universal joint has the orientation angle that locks described baseline rod and the locking mechanism of rotational angle; Described benchmark mechanism also comprises indicating arm, the adjustable in length of this indicating arm, on described indicating arm two ends, intersect, removably be connected with pointer, on this indicating arm end, vertically be connected with the cross shaft coupling, on this cross shaft coupling, vertically be connected with loop bar, vertically be fixed with the removably bar cover of the described baseline rod of socket on this loop bar one end; Described guide post is connected in described angle and the straight-line displacement mechanism, and described angle and straight-line displacement mechanism all removably are connected on the described baseline rod.Prior art is for the angle of splay of Acetabulum cap, the location of top rake, to be fixed on locating support on the whole large tracts of land of pelvis as the location benchmark, locating support is in case remove on one's body from the patient, the location benchmark disappears immediately, therefore, locating support restriction patient can only take to lie low the position and can not adjust position in art, or can only be reference standard with microcephaly location or big leg outer side center line, and such location benchmark randomness is too big, and the positioning accuracy error is big.And existing these mechanical localization methods all can't continue to show the orientation and the angle of pelvis and acetabular fossa in art, and Body Position Change also can make a big impact to the location, and in the art, orientation angle can not be according to operation progress and situation free adjustment.At above-mentioned shortcoming, implantation positioner of the present utility model has adopted the bone anchor that has the body of rod, this bone anchor can be connected to one by the body of rod and the only a certain side of pelvis, on this bone anchor point, connect standard then again, both overcome the inconvenience of the position restriction that large tracts of land three-point fix support brings, can increase localized objective invariance again, accuracy, reduce the randomness of location benchmark, and, with of the present utility model other accurately location corrective measures combine and just can guarantee that positioning accuracy improves and in art, continue the localized benchmark of demonstration promptly: adopt on the indicating arm of the present utility model two ends crossing, removably two pointers of Lian Jieing point to the most objective benchmark in location respectively---two anterior superior iliac spine of decubtus patient's pelvis, and then adjustment makes the parallel anterior superior iliac spine line of indicating arm, adjust the cross shaft coupling on the indicating arm when keeping the indicating arm invariant position, universal joint in loop bar etc. and the standard etc., the bar cover that order is connected with indicating arm one end is socketed on the described baseline rod, thereby realize that baseline rod is perpendicular to indicating arm, relend help level indicator carry out similar above-mentioned adjustment can make baseline rod simultaneously level point to the human body y direction, then vertically be installed in level indicator on this baseline rod and adjust this level indicator to horizontal direction, the zero graduation of the angle scale on the baseline rod is locked on the zero graduation of level indicator, after this step finishes, fastening, all locking mechanisms on the locking universal joint, be immobilization with baseline rod and the vertical determined human body datum water level of level indicator that is installed on the baseline rod, the relieving rod cover is to the socket relation of baseline rod subsequently, remove indicating arm and can only make general disinfectant level indicator from baseline rod and the dismounting of patient's body, and stayed the baseline rod that is fixed on the bone anchor and can be in the lump through disinfectant angle scales such as high temperature in patient's art side, obtained not the calibration that can change with position patient's pelvis level reference, because bone anchor is fixed on certain the bone point that needs operation one side usually, therefore this level reference had both allowed very big position to regulate degree of freedom, and it is very objective, accurately, firmly, the doctor uses angle and the straight-line displacement mechanism and the guide post of its follow-up connection, can can adjust to provide abduction 0-90 ° from two-dimensional directional at any time according to the operative incision at own experience and patient's concrete condition selection different directions position, in the 0-90 ° of scope that lean forward at any angle the mortar cup insert the location.Standard is connected as a single entity by body of rod bone anchor and pelvis, can effectively solve in the past localizer changes the orientation that is caused because of the patient body position, location misalignment shortcoming, inserting the positioning experiment checking through the mortar cup shows, mortar cup of the present utility model is inserted positioner the mortar cup is inserted localized angular deviation in 5 ° of scopes, and traditional mechanical localizer position error is generally at least at 20 °, even reach 45 °, therefore positioner positioning accuracy of the present utility model has significantly raising than the traditional mechanical localizer, repeatable also superior a lot of than the traditional mechanical localizer, can more accurately guide the mortar cup to insert, significantly reduce postoperative dislocation accident and take place.And mortar cup of the present utility model is inserted localizer and is had excellent economy, practicality.

For further strengthening above-mentioned principal advantages of the present utility model, this utility model is taked following concrete corrective measure to above-mentioned basic structure: described level indicator and described baseline rod are for removably connecting, perhaps described level indicator is a level indicator and hinged the forming of vertical open pores bar, and this perforate bar cover fits on the described baseline rod.Described bone anchor is at least two rigid threaded rod that can be fixed on side by side on the hipbone somewhere; Described standard also comprises screw rod clamp device, and this screw rod clamp device is connected with described baseline rod by described universal joint; Described screw rod clamp device comprises the major and minor nipper that is connected by lock-screw, the corresponding bar groove that has the described rigid threaded rod of clamping on the adjacent panels face of described major and minor nipper.Described indicating arm comprises that mobile jib and telescopically are connected the secondary bar of corresponding radical on this mobile jib one or the two ends, and the length of described indicating arm and people's pelvis width is suitable.Between described mobile jib and secondary bar for being threaded; Have some trip bolts that vertically hold the pin hole of described pointer and be provided with fastening described pointer on the described secondary bar.

Generally speaking, angle described in this utility model device and straight-line displacement mechanism comprise three secondary carriage release lever X, Y, Z and two angle initialization devices, described three secondary carriage release lever X, Y, Z are perpendicular to one another on three-dimensional, connect movably by corresponding cross shaft coupling in succession, described two angle initialization devices are installed in wherein on the described carriage release lever of second mate or its adjacent body mutual vertically, and described guide post is connected in the rotating shaft at one of described angle initialization device center; Be equipped with trip bolt on the described cross shaft coupling.

In preferred embodiment of the present utility model, that described baseline rod is cylindric, the most contiguous carriage release lever X is vertical with this cylinder baseline rod by cross shaft coupling, be connected rotationally; One of described angle initialization device comprises that cover fits over the protractor M on this baseline rod, and the zero graduation of the zero graduation of described protractor M and described vertical levels and/or angle scale overlaps.Be nonrotational connection between described three secondary carriage release lever X, Y, the Z; Two of described angle initialization device comprises the protractor N that is fixed on the carriage release lever Z and is contained in the angle initialization axle in this protractor N center of circle that described guide post is vertically connected on this angle initialization axle.Like this, mortar cup of the present utility model is inserted positioner and is fixed on patient's art side seam point by two standing screws, and is connecting standard by the firm clamp of screw rod clamp device, make standard and on universal joint firmly fix Rhizoma Atractylodis Macrocephalae side seam basin anterior superior iliac spine place.Regulate universal joint, and in conjunction with the application of level indicator and indicating arm, baseline rod is horizontal and perpendicular with pelvis two anterior superior iliac spine lines, carry out the zeroing of angle scale, protractor by vertical levels, the datum water level that baseline rod and protractor limit is changed, is cured as to patient's level reference.The capable side position of pelvis is put (putting mortar cup side up), carriage release lever X is engaged with baseline rod, rotate carriage release lever X then,, set the top rake number of degrees by selecting the reading of carriage release lever X on protractor M; The rotary steering bar by selecting the reading of guide post on protractor N, is set the angle of splay number of degrees.Simultaneously, straight line carriage release lever X, Y, Z can be guide post provide about, front and back and to outside to inside parallel move, thereby guarantee that guide post can point at the bottom of the acetabular fossa, accurately the inserting of guiding mortar cup.

For guaranteeing the rigidity of carriage release lever system, described carriage release lever X and Z are the polygon prism shape; Described carriage release lever Y is made of rectangle four rigid rods side by side.For remedying the rigidity not enough error factors of correction, also be provided with the subsidiary level instrument on the described carriage release lever Z in the carriage release lever system.

In a word, architecture advances of the present utility model, one, be connected as a single entity the influence that can avoid Body Position Change that the location is caused by screw rod and pelvis; Two, but the orientation angle free adjustment is set in the art, and the mortar cup can be inserted according to the individuation angle initialization according to actual needs.The utlity model has advantage such as be easy to implement, effective, with low cost.

Below, with accompanying drawing technical solution of the present utility model is described further in conjunction with specific embodiments.

[description of drawings]

Fig. 1 is structure master's sketch map of this utility model indicating arm embodiment.

Fig. 2 is the A-A cutaway view of Fig. 1.

Fig. 3 is the B-B cutaway view of Fig. 1.

Fig. 4 is the C-C cutaway view of Fig. 1.

Fig. 5 is structure master's sketch map of this utility model benchmark mechanism and carriage release lever system embodiment.

Fig. 6 is the upward view of Fig. 5.

Fig. 7 is the D-D cutaway view of Fig. 5.

Fig. 8 is the left view of Fig. 5.

[specific embodiment]

With reference to figure 1-5, the benchmark mechanism that acetabular cup is implanted positioner comprises the bone anchor 2 that has the body of rod, and this bone anchor 2 is two rigid threaded rod that can be fixed on side by side on the hipbone somewhere; Benchmark mechanism also comprises the standard that removably is connected on this bone anchor 2, and standard comprises that interconnective universal joint 3 and baseline rod 4 and cover fit over lock on the baseline rod 4 and decide the angle scale 5 of screw 51 and a level indicator 6 that is hinged with vertical open pores bar 61.Universal joint 3 has the orientation angle that locks baseline rod 4 and the locking mechanism 31 of rotational angle; Standard also comprises screw rod clamp device 7, and this screw rod clamp device 7 is connected with baseline rod 4 by universal joint 3; Screw rod clamp device 7 comprises the major and minor nipper that is connected by lock-screw 71, the corresponding bar groove 72 that has the clamping rigid threaded rod on the adjacent panels face of described major and minor nipper.Benchmark mechanism also comprises the indicating arm 8 of adjustable in length, indicating arm 8 comprises that mobile jib 81 and telescopically are connected two secondary bars 82 on these mobile jib two ends, intersect vertically, removably be connected with pointer 83 on the secondary bar 82 in indicating arm 8 two ends, 82 on mobile jib 81 and secondary bar are for being threaded; Have some trip bolts 84 that vertically hold the pin hole of pointer 83 and be provided with fastening pointer 83 on the secondary bar 82, the length of described indicating arm 8 and people's pelvis width is suitable.On these indicating arm 8 one ends, vertically be connected with cross shaft coupling 9, on this cross shaft coupling 9, vertically be connected with loop bar 10 (ginseng Fig. 1～5), vertically be fixed with the removably bar cover 11 of socket baseline rod 4 on these loop bar 10 1 ends.Angle and straight-line displacement mechanism all removably are connected on the baseline rod 4, and guide post will be connected in angle and the straight-line displacement mechanism.

Indicating arm embodiment:

Shown in Fig. 1～4: be the structural representation of this utility model indicating arm embodiment.The length of indicating arm 8 and people's pelvis width quite and adjustable in length, it comprises that mobile jib 81 and telescopically are connected two secondary bars 82 on these mobile jib 81 two ends, 82 on described mobile jib 81 and secondary bar are for being threaded; Have some trip bolts 84 that vertically hold the pin hole of described pointer 83 and be provided with fastening described pointer on the described secondary bar 82.On the secondary bar 82 of these indicating arm 8 certain ends, vertically be connected with cross shaft coupling 9, on this cross shaft coupling 9, vertically be connected with loop bar 10, vertically be fixed with the removably bar cover 11 of socket baseline rod 4 on these loop bar 10 1 ends.

Benchmark mechanism and carriage release lever system embodiment:

Shown in Fig. 5～8: be the structural representation of this utility model benchmark mechanism and carriage release lever system embodiment.Benchmark mechanism comprises the bone anchor that has the body of rod and removably is connected standard on this bone anchor that bone anchor is two rigid threaded rod 2 that can be fixed on side by side on hipbone 1 somewhere; Described standard comprises interconnective universal joint 3 and baseline rod 4 and the angle scale 5 and the level indicator 6 that have lock-screw 51 on baseline rod 4, and described universal joint 3 has the orientation angle that locks described baseline rod 4 and the locking mechanism 31 of rotational angle; Level indicator 6 is a level indicator 6 and vertical open pores bar 61 hinged forming, and these perforate bar 61 covers fit on the baseline rod 4.Standard also comprises screw rod clamp device 7, and this screw rod clamp device 7 is connected with described baseline rod 4 by described universal joint 3; Screw rod clamp device 7 comprises major and minor nipper 7A, the 7B that is connected by lock-screw 71, the corresponding bar groove 72 that has clamping rigid threaded rod 2 on the adjacent panels face of major and minor nipper 7A, 7B.

In this preferred embodiment, baseline rod 4 is cylindric, and the carriage release lever X of the most contiguous baseline rod 4 is 4 vertical by cross shaft coupling 12 and this cylinder baseline rod, be connected rotationally; One of angle initialization device comprises that cover fits over the protractor M on this baseline rod 4, and the zero graduation of the zero graduation of protractor M and described vertical levels 6 and/or angle scale 5 overlaps.Angle and straight-line displacement mechanism comprise three secondary carriage release lever X, Y, the Z that is perpendicular to one another, connects movably by corresponding cross shaft coupling 13,14 in succession on three-dimensional, be equipped with trip bolt on the described cross shaft coupling 12,13,14.Be nonrotational connection between three secondary carriage release lever X, Y, the Z; Two of angle initialization device comprises the protractor N that is fixed on the carriage release lever Z and is contained in the angle initialization axle 15 in this protractor N center of circle that guide post 16 is vertically connected on this angle initialization axle 15.For guaranteeing the rigidity of carriage release lever system, carriage release lever X and Z are the polygon prism shape; Carriage release lever Y is made of rectangle four rigid rods side by side.For remedying the rigidity not enough error factors of correction, also be provided with subsidiary level instrument 17 on the carriage release lever Z in the carriage release lever system.

Mortar cup of the present utility model is inserted positioner and is fixed on patient's art side seam point by two standing screws 2, and is connecting standard by screw rod clamp device 7 firm clamps, make standard and on universal joint 3 firmly fix Rhizoma Atractylodis Macrocephalae side seam basin 1 anterior superior iliac spine place.Regulate universal joint 3, and in conjunction with the application of level indicator 6 and indicating arm 8, baseline rod 4 is horizontal and perpendicular with 1 liang of anterior superior iliac spine line of pelvis, carry out the zeroing of angle scale 5, protractor M by the level indicator after vertically putting 6, patient's datum water level is converted to the sign of baseline rod 4 and angle scale 5 the most at last.The capable side position of pelvis is put (putting mortar cup side up), carriage release lever X is enclosed within on the baseline rod 4, rotate carriage release lever X then,, set the top rake number of degrees by the reading of selecting carriage release lever X on protractor M, to point out; Rotary steering bar 16 by the reading of selecting guide post 16 to point out, is set the angle of splay number of degrees on protractor N.Simultaneously, straight line carriage release lever X, Y, Z can be guide post provide about, front and back and to outside to inside parallel move, thereby guarantee that guide post 16 can point at the bottom of the acetabular fossa, accurately the inserting of guiding mortar cup.

Claims (10)

1, a kind of acetabular cup is implanted positioner, and this positioner comprises benchmark mechanism, angle and straight-line displacement mechanism and acetabular cup implantation guide post, and described guide post is connected in described angle and the straight-line displacement mechanism; Described benchmark mechanism comprises the indicating arm of adjustable in length, on described indicating arm two ends, intersect, removably be connected with pointer, it is characterized in that: described benchmark mechanism also comprises the bone anchor that has the body of rod and removably is connected standard on this bone anchor, but described standard comprises interconnective universal joint and baseline rod and the lock tube angle scale on baseline rod, and described universal joint has the orientation angle that locks described baseline rod and the locking mechanism of rotational angle; On described indicating arm end, vertically be connected with the cross shaft coupling, on this cross shaft coupling, vertically be connected with loop bar, vertically be fixed with the removably bar cover of the described baseline rod of socket on this loop bar one end; Described angle and straight-line displacement mechanism all removably are connected on the described baseline rod.

2, acetabular cup as claimed in claim 1 is implanted positioner, it is characterized in that: described standard also comprises level indicator, described level indicator and described baseline rod are for removably connecting, perhaps described level indicator is a level indicator and hinged the forming of vertical open pores bar, and this perforate bar cover fits on the described baseline rod.

3, acetabular cup as claimed in claim 1 is implanted positioner, it is characterized in that: described bone anchor is at least two rigid threaded rod that can be fixed on side by side on the hipbone somewhere; Described standard also comprises screw rod clamp device, and this screw rod clamp device is connected with described baseline rod by described universal joint; Described screw rod clamp device comprises the major and minor nipper that is connected by lock-screw, the corresponding bar groove that has the described rigid threaded rod of clamping on the adjacent panels face of described major and minor nipper.

4, implant positioner as the described acetabular cup of one of claim 1～3, it is characterized in that: described indicating arm comprises that mobile jib and telescopically are connected the secondary bar of corresponding radical on this mobile jib one or the two ends, and the length of described indicating arm and people's pelvis width is suitable.

5, acetabular cup as claimed in claim 4 is implanted positioner, it is characterized in that: described angle and straight-line displacement mechanism comprise three secondary carriage release lever X, Y, Z and two angle initialization devices, described three secondary carriage release lever X, Y, Z are perpendicular to one another on three-dimensional, connect movably by corresponding cross shaft coupling in succession, described two angle initialization devices are installed in wherein on the described carriage release lever of second mate or its adjacent body mutual vertically, and described guide post is connected in the rotating shaft at one of described angle initialization device center; Be equipped with trip bolt on the described cross shaft coupling.

6, acetabular cup as claimed in claim 5 is implanted positioner, and it is characterized in that: described baseline rod is cylindric, and described carriage release lever X is vertical with this cylinder baseline rod by cross shaft coupling, be connected rotationally; One of described angle initialization device comprises that cover fits over the protractor M on this baseline rod, and the zero graduation of the zero graduation of described protractor M and described vertical levels and/or angle scale overlaps.

7, acetabular cup as claimed in claim 6 is implanted positioner, it is characterized in that: be nonrotational connection between described three secondary carriage release lever X, Y, the Z; Two of described angle initialization device comprises the protractor N that is fixed on the carriage release lever Z and is contained in the angle initialization axle in this protractor N center of circle that described guide post is vertically connected on this angle initialization axle.

8, acetabular cup as claimed in claim 7 is implanted positioner, and it is characterized in that: described carriage release lever X and Z are the polygon prism shape; Described carriage release lever Y is made of rectangle four rigid rods side by side.

9, acetabular cup as claimed in claim 8 is implanted positioner, it is characterized in that: also be provided with the subsidiary level instrument on described carriage release lever Z.

10, implant positioner as the described acetabular cup of one of claim 1～3, it is characterized in that: between described mobile jib and secondary bar for being threaded; Have some trip bolts that vertically hold the pin hole of described pointer and be provided with fastening described pointer on the described secondary bar.

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