CN203885669U - Guide device for rear-pull type replacement of hip joint - Google Patents
Guide device for rear-pull type replacement of hip joint Download PDFInfo
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- CN203885669U CN203885669U CN201420208980.XU CN201420208980U CN203885669U CN 203885669 U CN203885669 U CN 203885669U CN 201420208980 U CN201420208980 U CN 201420208980U CN 203885669 U CN203885669 U CN 203885669U
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- handle
- guider
- cavity
- pull type
- jack
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- 238000009434 installation Methods 0.000 claims description 19
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- Prostheses (AREA)
Abstract
The utility model discloses a guide device for rear-pull type replacement of the hip joint. The device comprises a handle, a guide connecting rod, an acetabular cup connector and a sleeve; the lower end part of the handle is connected with the acetabular cup connector; one end part of the guide connecting rod is connected with one side of the handle, close to the upper end, and while the other end part of the guide connecting rod is equipped with a sleeve hole in which the sleeve is embedded by a sleeving manner; the acetabular cup connector comprises a mounting shaft; the axis of a central shaft of the sleeve is roughly overlapped with the axis of the mounting shaft; the handle and the guide connecting rod are fixedly connected through a first inserting rod and a second inserting hole which are matched with each other; a first concave groove is formed in the first inserting rod; a first steel ball is arranged in a first through hole that is communicated with the first inserting hole; a rear-pull sleeve is arranged on the outer surface of the first inserting hole and is used for clamping and fixing the first steel ball into the first concave groove; the rear-pull sleeve comprises at least two cavities of different diameters. The guide device is convenient to mount and dismount and can be used for accurately positioning, inserting, pressing fitting acetabular prosthesis without dislocation.
Description
Technical field
This utility model relates to a kind of Wicresoft and hinders hip replacement surgery instrument, relates in particular to a kind of guider of rear pull type hip replacement.
Background technology
Along with new medical model is to the transformation of biologic and psychogenic society medicine pattern and the formation of surgical diseases wholistic therapy idea, promote the development of Liao Wei the traumatology department, it is a kind of new operation method just occurring in recent years that replacement of total hip is hindered by Wicresoft, it is by the improvement to operative approach, operational approach and operation tool on the basis of traditional replacement of total hip, in a relatively little otch (5～10cm), complete the displacement to articular prosthesis, need the improvement of doctor's rich experience and operating theater instruments to obtain good surgical effect.Therefore instrument is had higher requirement, requirement can realize enough surgical field of view, reduces operating time, accurately location.Compare with traditional replacement of total hip, minimally invasive surgery has the advantages such as damage is little, recovery is fast, function of joint is kept.Traditional THA (total hip arthroplasty, total hip replacement) operative incision is generally 20～30cm, although have good surgical field of view, has also brought a large amount of losing blood and the recovery of postoperative long period.In this respect, minimally invasive surgery has obvious advantage, specifically referring to document 1: Zheng Dong, and Yang Shuhua, replacement of total hip progress is hindered by Wicresoft, and foreign medical science orthopaedics and tranmstology fascicle in January, 2005 z6 rolled up for the 1st phase.
Total hip replacement minimally invasive surgery enters path method to be had multiplely, mainly comprises two incision approach, front lateral approach or anterior approach, posterior approach or posterolateral approach, specifically referring to document 2:Kelmanovich D, Parks ML, Sinha R, et al.J South Orthop Assoc, 2003; 12 (2): 90～94.The capable total hip joint of two incision approach is hindered by Wicresoft, adopts special instrument and perspective auxiliary, and safety is better, and it is faster that patient recovers, and prosthese position is more accurate; But with C arm machine, assist at any time in polishing and acetabular bone or femoral prosthesis put procedure, can cause increasing doctor's irradiation time, specifically referring to document 3:Berger R Paper presented at:70th Annual Meeting of the American Academy of Orthopaedic Surgeon, 2003.Implement in addition this class operation and remain the test to surgical technic, operator need to have good technology and equipment condition.Front side approach need to, by drag hook and extension table traction complete operation, need to use special operation table; Uncommon front road exposure chamber, doctor's learning curve is long; The acetabular bone visual field is limited; Conventionally use special femoral stem; Need to use band eccentric throw prosthese driver; In art, locomotive activity test is limited in scope; Femur and ankle joint fracture in normal generation art.Front lateral approach, provides acetabular bone intuitively to appear, and be convenient in art, acetabular bone position be adjusted repeatedly, but the cut-out of part abductor likely causes limping.And cut the joint capsule of whole front sides, and account for 30%～40% of whole joint capsule, also may cause postoperative unstable.Rear side approach is that the most common operative approach that THA adopts is hindered by Wicresoft, and this operative approach is similar to traditional posterior approach THA, because of but operative doctor learn to hold a kind of wield minimally invasive surgery method most in this type of operation process, have much representativeness.The surgical technic of this uniqueness can make orthopedist complete by the operation tool after improving.General rear outside minimally invasive surgery, otch is little, and amount of bleeding reduces, and this approach femur side appears with easy to operate.But acetabular bone exposure is insufficient, backward dislocation probability is higher, injury of sciatic nerve is subject matter, and because still want cut-away portions muscle in art, thereby can not can be regarded as real minimally invasive surgery.If but improve tool design, do not cut off soft tissue and complete operation technique, will realize real minimally invasive surgery technology.
After replacement of total hip, dislocation of hip joint is still the major complications that is only second to prosthetic loosening in addition.In operation, soft tissue destruction is too much its one of the main reasons, and this is familiar with by surgeon just day by day.The stability that maintains hip joint is mainly static(al) and dynamical stability structure.Joint capsule structure and intraarticular external ligament increase static stability, and dynamical stability structure is muscle tone and the tension stress intensity of hip joint rich surrounding.Capsule ligament can guide the proper motion of articular surface and the effect of limit excessive motion, particularly importantly stops any unphysiologic displacement to occur, and is the important structure of stablizing hip joint.Therefore in minimally invasive surgery, to the reservation of ligament, muscle, joint capsule, be the importance of successful surgery, can maintain the stability in joint.
Because minimally invasive surgery otch is very little, the less cicatrix of otch is less.But this after all Bu Shi Wicresoft hinder THA final purpose, if minimally invasive surgery mode accurately processes acetabular bone objectively to operative doctor and femur brings very large difficulty, or operator ability is limit and cannot successfully at narrow space, be performed the operation, operation so blindly will cause a series of complication, as prosthese is placed unreasonable, fracture or nerve injury, postoperative stremma or prosthetic joint face wearing and tearing too early etc.Thereby in practical operation, Wicresoft hinders THA operation instrument is had higher requirement, because otch is little, need to make acetabular bone to expose fully, retain ligament, muscle, joint capsule is complete and backward dislocation probability is the requirement such as zero, the surgical effect that could obtain.Therefore, Wicresoft hinders total hip replacement operation the improved operation tool of special use is had higher requirement, can make acetabular bone expose fully, without backward dislocation occur, do not cut off muscle, retain complete shutdown capsule, the requirement such as location accurately, instrument is hindered by the Wicresoft that Patents relates at present, exist using method complicated, not quick detachable, or the shortcoming such as large that takes up space, existing instrument can not meet whole requirements.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of guider of rear pull type hip replacement, can accurately locate, easily handling, realize efficiently and easily acetabular component insertion, be press-fitted, and effectively avoid occurring dislocation phenomenon, greatly reduce the deadline of minimally invasive surgery.
This utility model is to solve the problems of the technologies described above the guider that the technical scheme adopting is to provide a kind of rear pull type hip replacement, comprise handle, guide link, acetabular cup adapter and sleeve, the bottom of described handle is connected with described acetabular cup adapter, one end of described guide link is connected with the side of described handle near upper end, and the other end of described guide link is provided with sleeve hole, and described sleeve is nested in described sleeve hole, described acetabular cup adapter comprises installation shaft, the central shaft of described sleeve and the axis of described installation shaft are roughly overlapping, described handle and guide link are fixedly linked by the first inserted link and first jack of mutual coupling, described the first inserted link is provided with the first groove, in the first through hole being connected with described the first jack, be provided with the first steel ball matching with the first groove, the outer surface of described the first jack is provided with post-tensioning sleeve, described the first steel ball fixes in the first groove by post-tensioning sleeve, described post-tensioning sleeve comprises the cavity of at least two different-diameters, cavity diameter near handle is larger.
The guider of above-mentioned rear pull type hip replacement, wherein, described the first inserted link is arranged on handle near a side of upper end, and described the first jack is arranged on guide link end.
The guider of above-mentioned rear pull type hip replacement, wherein, the shape of described the first inserted link and the first jack is cylindrical, described post-tensioning sleeve comprises the first cavity, the second cavity and the 3rd cavity of different-diameter, described the first cavity is near handle, the diameter of described the first cavity and the 3rd cavity is greater than the diameter of the second cavity, and the inwall of described the second cavity and the first steel ball are inconsistent.
The guider of above-mentioned rear pull type hip replacement, wherein, is provided with the first check ring in described the first cavity, in described the 3rd cavity, is provided with the first spring and the guide rod shaft that is set in the first jack periphery.
The guider of above-mentioned rear pull type hip replacement, wherein, described post-tensioning sleeve outer surface is provided with projection.
The guider of above-mentioned rear pull type hip replacement, wherein, described the first groove is annular groove.
The guider of above-mentioned rear pull type hip replacement, wherein, the quantity of described the first through hole is 2-4, places first steel ball in each first through hole.
The guider of above-mentioned rear pull type hip replacement, wherein, described a plurality of the first through holes being circumferentially uniformly distributed along the first jack.
The guider of above-mentioned rear pull type hip replacement, wherein, described acetabular cup adapter comprises mount pad and striking head, described mount pad is fixedly connected with the bottom of handle, described striking head is set in described installation shaft and with described mount pad coupling and is connected, and the head of described installation shaft can be connected with acetabular cup and rotate along axis.
The guider of above-mentioned rear pull type hip replacement, wherein, the bottom of described acetabular cup adapter and handle is fixedly linked by the second inserted link and second socket of mutual coupling, described the second inserted link is arranged on the mount pad of acetabular cup adapter, and described the second socket is arranged on the bottom of handle.
The guider of above-mentioned rear pull type hip replacement, wherein, described the second inserted link is cylindrical inserted link, described the second inserted link is provided with the second groove, in described the second socket, be provided with the second jack matching with the second inserted link, in the second through hole being connected with described the second jack, be provided with the second steel ball matching with the second groove, described the second steel ball fixes in described the second groove by gland.
The guider of above-mentioned rear pull type hip replacement, wherein, described the second groove is annular groove.
The guider of above-mentioned rear pull type hip replacement, wherein, is also provided with the second spring between described the second steel ball and gland, and the inwall of described gland and the second socket is inconsistent.
The guider of above-mentioned rear pull type hip replacement, wherein, the quantity of described the second through hole is 2-4, each second through hole is from inner the second steel ball, the second spring and the gland of being outwards all disposed with.
The guider of above-mentioned rear pull type hip replacement, wherein, described a plurality of the second through holes being circumferentially uniformly distributed along the second socket.
The guider of above-mentioned rear pull type hip replacement, wherein, the bottom of described acetabular cup adapter and handle is fixedly linked by the second inserted link and second jack of mutual coupling, described the second inserted link is arranged on the mount pad of acetabular cup adapter, described the second jack is arranged on the bottom of handle, described the second inserted link is provided with the second groove, in the second through hole being connected with described the second jack, be provided with the second steel ball matching with the second groove, the outer surface of described the second jack is provided with front pushing sleeve cylinder, described the second steel ball fixes in the second groove by front pushing sleeve cylinder.
The guider of above-mentioned rear pull type hip replacement, wherein, the shape of described the second inserted link and the second jack is cylindrical, front pushing sleeve cylinder comprises the 4th cavity and the 5th cavity of different-diameter, the inwall of described the 4th cavity and the second steel ball are inconsistent, and the diameter of described the 5th cavity is greater than the diameter of the 4th cavity.
The guider of above-mentioned rear pull type hip replacement, wherein, is arranged with the second spring and the second check ring in described the 5th cavity.
The guider of above-mentioned rear pull type hip replacement, wherein, the upper end of described handle is provided with rotatable handle, and described handle is provided with the wave lines of the hand.
This utility model contrast prior art has following beneficial effect: the guider of the rear pull type hip replacement that technical solutions of the utility model provide, be mainly used for acetabular component calibration, insert and be press-fitted.In use, can hold two otch, first main otch is used for installing the prostheses such as femoral stem, acetabular bone, femoral head, neck of femur, is used for excising femoral head and lays acetabular component; Second otch is mainly used in the location of acetabular bone and is press-fitted, and reduces operating time, and guarantees can not dislocate.Described guider mainly comprises guiding handle, guide link, acetabular cup adapter and sleeve; Handle and guide link by arranging rear pull type sleeve on jack, as long as by post-tensioning sleeve toward after leaving handle direction and pulling at, inserted link is inserted to jack certain position fixedly lets go, there are easy handling, easy to use, quick, accurate, greatly reduce deadline of minimally invasive surgery, operation process does not need to cut off any muscle and joint capsule, can accurately locate, insert, be press-fitted acetabular component, without advantages such as dislocation generations.This Wicresoft hinder instrument and use minimally invasive surgery technology that this Wicresoft hinders instrument to replacement of total hip provide reduce wound, ease the pain and shorten rehabilitation duration may, make that patient can shorten the hospital stays, reduction expense, recover faster.The operation of using this Wicresoft to hinder instrument can avoid cutting off the reservation of any MT, especially piriformis, is a kind of real muscle reservation technology, and keeps the complete of joint capsule, thereby reduces complication, shortens rehabilitation duration; In art still less lose blood and muscle destroys, postoperative joint is more stable, joint function recovery is better.Conventional anatomical form approach, is used standard procedures platform, less nerve injury/anesthesia damage, without dislocation, occur, by this special use guider, position, by sleeve pipe, carry out accurately acetabular bone processing (preparation) and implant, the clinical effectiveness significantly promoting than standard way of escape minimally invasive surgery; Good acetabular bone and the femur visual field, all parts have reliable axiality; The learning curve shorter than front side approach; Compare with way of escape otch, way of escape otch is large, and can damage many muscular tissues; Rear side Wicresoft hinders path otch and significantly dwindles, but still the separated muscle group the same with large otch of energy; The surgical technic advantage of using this utility model guider is without operation dislocation, recovers fast to leave hospital, and modus operandi is simple, complete, the less risk of bone fracture of neck of femur while expanding marrow; It is traditional THA that THA hinders in operation process Zhong Bian Wicresoft, and otch can expand, and in doctor's art, flexibility ratio is higher; Concerning doctor, can become a kind of standard, surgical technic safely and effectively, do not need the learning curve of growing very much.Many selections for rehabilitation as early as possible concerning patient, operative scar more attractive in appearance can increase patient's satisfaction simultaneously.
Accompanying drawing explanation
Fig. 1 is the guider exploded perspective view of rear pull type hip replacement in this utility model embodiment;
Fig. 2 is this utility model embodiment Wave formula handle arrangement schematic diagram;
Fig. 3 a is handle and guide link rear pull type connection diagram in this utility model embodiment;
Fig. 3 b is handle and guide link rear pull type assembling process schematic diagram in this utility model embodiment;
Fig. 4 a is acetabular cup structural representation in this utility model embodiment;
Fig. 4 b is acetabular cup cross-sectional view in this utility model embodiment;
Fig. 5 a is acetabular cup connector construction schematic diagram in this utility model embodiment;
Fig. 5 b is acetabular cup adapter cross-sectional view in this utility model embodiment;
Fig. 6 a, 6b are acetabular cup and acetabular cup adapter assembling process schematic diagram in this utility model embodiment;
Fig. 7 a, 7b are acetabular cup adapter and knocker assembly connection schematic diagram in this utility model embodiment;
Fig. 7 c is that in this utility model embodiment, acetabular cup adapter and knocker are used in conjunction with process schematic diagram;
Fig. 8 a is handle and the direct insertion connection diagram of acetabular cup adapter in this utility model embodiment;
Fig. 8 b is handle and the direct insertion assembling process schematic diagram of acetabular cup adapter in this utility model embodiment;
Fig. 9 a is handle and acetabular cup adapter foward-push connection diagram in this utility model embodiment;
Fig. 9 b is handle and acetabular cup adapter foward-push assembling process schematic diagram in this utility model embodiment;
Figure 10 is the use procedure schematic diagram of the guider of rear pull type hip replacement of the present utility model.
In figure:
1 handle 2 guide link 3 acetabular cup adapters
4 acetabular cup 5 sleeve 6 knockers
10 handle 11 first inserted link 12 second sockets
13 gland 14 second spring 15 second steel balls
Front pushing sleeve cylinder 18 second check rings of 16 first groove 17
121 second jack 122 second through holes
171 the 4th cavity 172 the 5th cavitys
21 sleeve hole 22 first jack 24 first springs
25 first steel ball 26 post-tensioning sleeve 27 first check rings
28 guide rod shafts
221 first through hole 261 first cavity 262 second cavitys
263 the 3rd cavity 264 projections
30 second groove 31 second inserted links 32 are sold directly to households
33 mount pad 34 striking head 35 installation shaft
36 screw thread 37 axis 38 inner hexagonal holes
41 cups 42 are planted nail hole 43 screwed hole of centre
901 scalpel 902 otch 903 acetabular fossa
904 positioning needle 905 leading truck 906 die trial cups
907 positioning needle sleeve pipe 908 acetabular fossa reamer 909 reamer rotating shafts
910 placed channel 912 drumstick 914 fixed sleevings
916 bone drill 917 bottle openers
The specific embodiment
Below in conjunction with drawings and Examples, the utility model will be further described.
Fig. 1 is the guider exploded perspective view of rear pull type hip replacement in this utility model embodiment; Fig. 3 a is handle and guide link rear pull type connection diagram in this utility model embodiment.
Refer to Fig. 1 and Fig. 3 a, the guider of the rear pull type hip replacement that this utility model provides, comprises handle 1, guide link 2, acetabular cup adapter 3 and sleeve 5, and the bottom of described handle 1 is connected with acetabular cup adapter 3; One end of guide link 2 is connected with the side of handle 1 near upper end, and the other end of guide link 2 is provided with sleeve hole 21, and sleeve 5 is nested in sleeve hole 21; Acetabular cup adapter 3 comprises mount pad 33 and striking head 34, mount pad 33 is fixedly connected with the bottom of handle 1, striking head 34 is set in installation shaft 35 and with mount pad 33 couplings and is connected, the head of installation shaft 35 can be connected with acetabular cup 4 and rotate along axis 37, and the axis 37 of the installation shaft 35 of the central shaft of sleeve 5 and acetabular cup adapter 3 is roughly overlapping; Handle 1 and guide link 2 are fixedly linked by the first inserted link 11 and first jack 22 of mutual coupling, the first inserted link 11 is provided with the first groove 16, in the first through hole 221 being connected with the first jack 22, be provided with the first steel ball 25 matching with the first groove 16, the outer surface of the first jack 22 is provided with post-tensioning sleeve 26, the first steel ball 25 fixes in the first groove 16 by post-tensioning sleeve 26, post-tensioning sleeve 26 comprises the cavity of at least two different-diameters, larger near the cavity diameter of handle 11.
Fig. 2 is this utility model embodiment Wave formula handle arrangement schematic diagram.
Refer to Fig. 2, the upper end of this utility model handle 1 is provided with rotatable handle 10, and handle 10 can rotate in certain angle, and can accurately locate; On handle 10, can be provided with the wave lines of the hand, use more comfortable control more firm.
Fig. 3 a is handle and guide link rear pull type connection diagram in this utility model embodiment.
Refer to Fig. 3 a, handle 1 and guide link 2 realize being fixedly linked of rear pull type by the first inserted link 11, the first jack 22 and the post-tensioning sleeve 26 of mutual coupling.The first inserted link 11 is arranged on handle 1 near a side of upper end, and the first 22 of jacks relative set is in guide link 2 ends.
The shape of the first inserted link 11 and the first jack 22 is cylindrical, the first groove 16 arranging on the first inserted link 11 is annular groove, the quantity of the first through hole 221 being connected with the first jack 22 is 2-4, along being circumferentially uniformly distributed of the first jack 22, first steel ball 25 of the interior placement of each the first through hole 221.Post-tensioning sleeve 26 comprises the first cavity 261 of different-diameter, the second cavity 262 and the 3rd cavity 263, the first cavity 261 is near handle 1, the diameter of the first cavity 261 and the 3rd cavity 263 is greater than the diameter of the second cavity 262, the first cavity 261 can unclamp for the first steel ball 25, preferably, the slightly larger in diameter of the first cavity 261 adds the diameter of two the first steel balls 25 in the diameter of the first inserted link 11, while making the first inserted link 11 insert the first jack 22, the first steel ball 25 is totally released and makes the first inserted link 11 insert the first jack 22, the first steel ball 25 when the inwall of the second cavity 262 and compression is inconsistent, preferably, the second cavity 262 is close to the outer surface that is arranged on the first jack 22, the first inserted link 11 is locked in the first jack 22, in the first cavity 261, be provided with the first check ring 27, in the 3rd cavity 263, be arranged with the first spring 24 and guide rod shaft 28, post-tensioning sleeve 26 main body outer surfaces are provided with projection 264, to facilitate post-tensioning, time operation is used, handle 1 inserts the first inserted link 11 on handle 1 in guide link 2 end the first jacks 22 when being connected and fixed with guide link 2, by first inserted link 11 that locks of post-tensioning sleeve 26 and the first steel ball 25, thereby make handle 1 together with guide link 2 close fit.
Fig. 3 b is handle and guide link rear pull type assembling process schematic diagram in this utility model embodiment.
Refer to Fig. 3 b1, first by post-tensioning sleeve 26, along direction of arrow post-tensioning, the first steel ball 25 is now unclamped; Continue post-tensioning sleeve 26 to apply along arrow points back pull, and the first jack 22 on the first inserted link 11 alignment guide connecting rods 2 on handle 1 is inserted, as shown in Fig. 3 b2; Continuation is to power, and continues the first inserted link 11 on guiding handle 1 parts to insert, arrive after certain position due to the extruding of the first inserted link 11 up and down loosening two first steel balls 25 upwards backed down downwards as shown in Fig. 3 b3; Until the first inserted link 11 is inserted in the first jack 22, as shown in Fig. 3 b4 completely; Finally remove the pulling force backward to post-tensioning sleeve 26, now due to the effect of the first spring 24, post-tensioning sleeve 26 is reversed the initial position that rebounds, thereby because extruding first steel ball 25 of post-tensioning sleeve 26 is pressed in the first groove 16 on the first inserted link 11, the first inserted link 11 has been locked in the first jack 22 in this process, as shown in Fig. 3 b5, so far completed the assembling of guiding handle 1 parts and guide link 2 parts.
It is firm and simple to operate that this connects locking, only post-tensioning sleeve 26 post-tensioning gently then need be inserted into the first inserted link 11 on guiding handle 1 in the first jack 22 of guide link 2, then discharge and can complete assembling to the back pull of post-tensioning sleeve 26; The fractionation of two parts also only need be extracted by the first inserted link 11 on guiding handle 1 post-tensioning sleeve 26 after post-tensioning gently in the first jack 22 of guide link 2 ends; This structure can greatly reduce the installation time of guiding handle 1 and guide link 2, thereby has greatly shortened the total time of operation.
Fig. 4 a is acetabular cup structural representation in this utility model embodiment; Fig. 4 b is acetabular cup cross-sectional view in this utility model embodiment.
Refer to Fig. 4, acetabular cup 4 is mainly by cup 41, install hold-down screw plant nail hole 42 and head forms for connecting the screwed hole of centre 43 of use.
Fig. 5 a is acetabular cup connector construction schematic diagram in this utility model embodiment; Fig. 5 b is acetabular cup adapter cross-sectional view in this utility model embodiment.
Refer to Fig. 5, in the present embodiment, acetabular cup adapter 3 mainly comprises the second inserted link 31 being connected with handle 1, be connected and fixed the direct selling 32 of the second inserted link 31 and mount pad 33, striking head 34 and installation shaft 35, wherein mount pad 33 is to rely on screw thread 36 to be combined together with striking head 34, and installation shaft 35 can freely be rotated its head threads 36 for connecting acetabular cup 4 use around axis 37.
Fig. 6 a, 6b are acetabular cup and acetabular cup adapter assembling process schematic diagram in this utility model embodiment.
Refer to Fig. 6, the screwed hole of centre of acetabular cup 4 cups 41 43 is aimed to acetabular cup adapter 3 installation shaft 35 head external screw threads 36 and be rotated assembling, thereby screw, acetabular cup 4 is fixed on acetabular cup adapter 3.
Fig. 7 a, 7b are acetabular cup adapter and knocker assembly connection schematic diagram in this utility model embodiment; Fig. 7 c is that in this utility model embodiment, acetabular cup adapter and knocker are used in conjunction with process schematic diagram.
Refer to Fig. 7, the using method of acetabular bone knocker 6 is through sleeve hole 21 by knocker 6, and knocker 6 head turret heads are aimed at and to be inserted on acetabular bone adapter 3 in the corresponding inner hexagonal hole 38 of installation shaft 35, use drumstick etc. knocks the head that instrument knocks knocker 6, after acetabular cup 4 being knocked in to relevant position and striking in fact, thereby driving acetabular cup adapter 3 installation shaft 35 to unscrew acetabular cup 4, rotopeening device 6 with coordinating of acetabular cup adapter 3, acetabular cup 4 and acetabular cup adapter 3 are separated.
Between handle 1 and acetabular cup adapter 3, can connect by direct insertion or foward-push connected mode, Fig. 8 is direct insertion connection diagram, and Fig. 9 is foward-push connection diagram, describes respectively below.
Fig. 8 a is handle and the direct insertion connection diagram of acetabular cup adapter in this utility model embodiment.
Refer to Fig. 8 a, the bottom of acetabular cup adapter 3 and handle 1 is fixedly linked by the second inserted link 31 and second socket 12 of mutual coupling; The second inserted link 31 is arranged on the mount pad 33 of acetabular cup adapter 3, and the second socket 12 is arranged on the bottom of handle 1.Certainly, the position of the second inserted link 31 and the second socket 12 also can arrange conversely.
Preferably, the second inserted link 31 is cylindrical inserted link, cylindrical the second inserted link 31 is provided with the second groove 30, the second groove 30 is preferably annular groove, in the second socket 12, be provided with the second jack 121 matching with the second inserted link 31, in the second socket 12, be also provided with the second through hole 122 connecting with the second jack 121, the second through hole 122 is from inner second steel ball 15 that is outwards all disposed with, the second spring 14 and gland 13, the second steel ball 15 and the second groove 30 match, by gland 13, the second spring 14 fixes in the second groove 30, the inwall of gland 13 and the second socket 12 is inconsistent.In the second jack 121 mainly the second inserted link 31 on acetabular cup adapter 3 being inserted on handle 1 end the second socket 12 when handle 1 is connected with acetabular cup adapter 3, by four group of second steel ball 15, the second spring 14 and gland 13, thereby make handle 1 together with acetabular cup adapter 3 close fit; This attended operation is simple, only the second inserted link 31 of acetabular cup adapter 3 need be inserted in the second jack 121 on handle 1 and can complete assembling, the fractionation of two parts also only need be extracted the second inserted link 31 of acetabular cup adapter 3 in the second jack 121 from handle 1; Certainly this kind of structure considered from reducing weight, can reduce the assembling of a group or two groups gland 13, the second spring 14 and the second steel ball 15.Preferred being circumferentially uniformly distributed along the second socket 12 of a plurality of the second through hole 122.
Fig. 8 b is handle and the direct insertion assembling process schematic diagram of acetabular cup adapter in this utility model embodiment;
Refer to Fig. 8 b1 and 8b4, extruding due to the second inserted link 31 in the second jack 121 on second inserted link 31 insertion handle 1 end the second sockets 12 of acetabular cup adapter 3 makes the second steel ball 15 to the hole wall direction motion of the second through hole 122, as shown in Fig. 8 b2 and 8b5; Thereby when the second inserted link 31 is inserted into certain position, the second steel ball 15 because being just in time pressed in annular the second groove 30 on the second inserted link 31, has been locked at the second inserted link 31 in the second socket 12 in the effect of gland 13 and the second spring 14, as shown in Fig. 8 b3 and 8b6, so far completed the assembling of handle and guide link.
Fig. 9 a is handle and acetabular cup adapter foward-push connection diagram in this utility model embodiment.
Refer to Fig. 9 a, the bottom of acetabular cup adapter 3 and handle 1 is fixedly linked by the second inserted link 31 and second jack 121 of mutual coupling, the second inserted link 31 is arranged on the mount pad 33 of acetabular cup adapter 3, the second jack 121 is arranged on the bottom of handle 1, the second inserted link 31 is provided with the second groove 30, in the second through hole 122 being connected with the second jack 121, be provided with the second steel ball 15 matching with the second groove 30, the outer surface of the second jack 121 is provided with front pushing sleeve cylinder 17, the second steel balls 15 and fixes in the second groove 30 by front pushing sleeve cylinder 17.The shape of the second inserted link 31 and the second jack 121 is preferably cylindrical, front pushing sleeve cylinder 17 comprises the 4th cavity 171 and the 5th cavity 172 of different-diameter, the inwall of the 4th cavity 171 and the second steel ball 15 are inconsistent, and the diameter of the 5th cavity 172 is greater than the diameter of the 4th cavity 171.In the 5th cavity 172, be provided with the second spring 14 and the second check ring 18 that are set in the second inserted link 31 outer surfaces.
Fig. 9 b is handle and acetabular cup adapter foward-push assembling process schematic diagram in this utility model embodiment.
As shown in Fig. 9 b1, first by front pushing sleeve cylinder 17, before the direction of arrow, push away, the second steel ball 15 is now unclamped; Continue front pushing sleeve cylinder 17 to apply along arrow points forward thrust, and by the second inserted link 31 on acetabular cup adapter 3, the second jack 121 of alignment guide handle 1 lower end inserts, as shown in Fig. 9 b2; Continuation is to power, and continues the second inserted link 31 on acetabular cup adapter 3 to insert, and arrives the two second loosening steel balls 15 of extruding left and right due to the second inserted link 31 after certain position and to from left to right, backed down as shown in Fig. 9 b3; Until the second inserted link 31 is inserted in the second jack 121, as shown in Fig. 9 b4 completely; Finally remove the forward thrust to front pushing sleeve cylinder 17, now due to the effect of the second spring 14, front pushing sleeve cylinder 17 is reversed the initial position that rebounds, thereby because extruding second steel ball 15 of front pushing sleeve cylinder 17 is pressed in the second groove 30 on the second inserted link 31, the second inserted link 31 has been locked in the second jack 121 in this process, as shown in Fig. 9 b5, so far completed the assembling of handle 1 with acetabular cup adapter 3.
It is firm and simple to operate that this foward-push connects locking, only front pushing sleeve cylinder 17 before need be pushed away gently, then the second inserted link 31 on acetabular cup adapter 3 is inserted in second jack 121 of guiding on handle 1, then discharges and can complete assembling to the forward thrust of front pushing sleeve cylinder 17; The fractionation of two parts also only need before postpone front pushing sleeve cylinder 17 gently the second inserted link 31 on acetabular cup adapter 3 is extracted in the second jack 121 of guiding handle 1; This structure can greatly reduce the installation time of guiding handle 1 parts and acetabular cup adapter 3, thereby has greatly shortened the total time of operation.
Figure 10 is the use procedure schematic diagram of the guider of rear pull type hip replacement of the present utility model.
Below in conjunction with Figure 10 a～10r, describe the use procedure of the guider of rear pull type hip replacement of the present utility model in detail.
Refer to Figure 10 a: under the position of patient's lateral position, at rear dypass, with scalpel 901, do otch 902, expose the acetabular fossa 903 of joint part;
Refer to Figure 10 b: from otch 902, put into the leading truck 905 that die trial cup 906 is housed, die trial cup 906 is put into acetabular fossa 903, and insert positioning needle 904 from sleeve 5;
Refer to Figure 10 c: regulate leading truck 905 system perspective, determine positioning needle 904 insert ports, cut skin, insert positioning needle 904, manufacture acetabular cup placed channel 910, remove positioning needle, leave positioning needle sleeve pipe 907;
Refer to Figure 10 d: remove the leading truck 905 that die trial cup is housed;
Refer to Figure 10 e, 9f: from otch 902, put into acetabular fossa reamer 908;
Refer to Figure 10 g: from placed channel 910, insert reamer rotating shaft 909 and reamer rotating shaft 909 is installed on motor;
Refer to Figure 10 h: start motor and drive acetabular fossa reamer 908 renovation acetabular fossa, remove motor and acetabular fossa reamer 908 assembly parts;
Refer to Figure 10 i: from otch 902, the leading truck 905 that acetabular cup 4 is housed is put into acetabular fossa 903;
Refer to Figure 10 j: from placed channel 910, insert acetabular cup knocker 6;
Refer to Figure 10 k: use drumstick 912 or other to knock thing and beat acetabular bone knocker 6 tail end striking head, acetabular cup 4 is struck to reality in acetabular fossa 903;
Refer to Figure 10 l: rotation acetabular cup knocker 6 makes acetabular cup 4 separated with leading truck 905;
Refer to Figure 10 m: remove acetabular cup knocker 6;
Refer to Figure 10 n: remove leading truck 905;
Refer to Figure 10 o: from placed channel 910, insert fixed sleeving 914;
Refer to Figure 10 p: fixed sleeving 914 is aimed to planting on acetabular cup 4 and follow closely hole 42;
Refer to Figure 10 q: from fixed sleeving 914, insert the bone drill 916 that is connected with motor, by acetabular cup, plant nail 42 drilling screw holes, hole;
Refer to Figure 10 r: from fixed sleeving 914, insert hold-down screw with corresponding bottle opener 917 by the above-mentioned screw hole of screw placement, so far that acetabular cup 4 is fixing complete.
Although this utility model discloses as above with preferred embodiment; so it is not in order to limit this utility model; any those skilled in the art; within not departing from spirit and scope of the present utility model; when doing a little modification and perfect, therefore protection domain of the present utility model is worked as with being as the criterion that claims were defined.
Claims (19)
1. a guider for rear pull type hip replacement, is characterized in that, comprises handle, guide link, acetabular cup adapter and sleeve, and the bottom of described handle is connected with described acetabular cup adapter; One end of described guide link is connected with the side of described handle near upper end, and the other end of described guide link is provided with sleeve hole, and described sleeve is nested in described sleeve hole; Described acetabular cup adapter comprises installation shaft, and the central shaft of described sleeve and the axis of described installation shaft are roughly overlapping; Described handle and guide link are fixedly linked by the first inserted link and first jack of mutual coupling, described the first inserted link is provided with the first groove, in the first through hole being connected with described the first jack, be provided with the first steel ball matching with the first groove, the outer surface of described the first jack is provided with post-tensioning sleeve, described the first steel ball fixes in the first groove by post-tensioning sleeve, described post-tensioning sleeve comprises the cavity of at least two different-diameters, larger near the cavity diameter of handle.
2. the guider of rear pull type hip replacement as claimed in claim 1, is characterized in that, described the first inserted link is arranged on handle near a side of upper end, and described the first jack is arranged on guide link end.
3. the guider of rear pull type hip replacement as claimed in claim 2, it is characterized in that, the shape of described the first inserted link and the first jack is cylindrical, described post-tensioning sleeve comprises the first cavity, the second cavity and the 3rd cavity of different-diameter, described the first cavity is near handle, the diameter of described the first cavity and the 3rd cavity is greater than the diameter of the second cavity, and the inwall of described the second cavity and the first steel ball are inconsistent.
4. the guider of rear pull type hip replacement as claimed in claim 3, is characterized in that, in described the first cavity, is provided with the first check ring, in described the 3rd cavity, is provided with the first spring and the guide rod shaft that is set in the first jack periphery.
5. the guider of rear pull type hip replacement as claimed in claim 3, is characterized in that, described post-tensioning sleeve body outer surface is provided with projection.
6. the guider of rear pull type hip replacement as claimed in claim 3, is characterized in that, described the first groove is annular groove.
7. the guider of rear pull type hip replacement as claimed in claim 1, is characterized in that, the quantity of described the first through hole is 2-4, places first steel ball in each first through hole.
8. the guider of rear pull type hip replacement as claimed in claim 7, is characterized in that, described a plurality of the first through holes being circumferentially uniformly distributed along the first jack.
9. the guider of rear pull type hip replacement as claimed in claim 1, it is characterized in that, described acetabular cup adapter comprises mount pad and striking head, described mount pad is fixedly connected with the bottom of handle, described striking head is set in described installation shaft and with described mount pad coupling and is connected, and the head of described installation shaft can be connected with acetabular cup and rotate along axis.
10. the guider of rear pull type hip replacement as claimed in claim 9, it is characterized in that, the bottom of described acetabular cup adapter and handle is fixedly linked by the second inserted link and second socket of mutual coupling, described the second inserted link is arranged on the mount pad of acetabular cup adapter, and described the second socket is arranged on the bottom of handle.
The guider of 11. rear pull type hip replacements as claimed in claim 10, it is characterized in that, described the second inserted link is cylindrical inserted link, described the second inserted link is provided with the second groove, in described the second socket, be provided with the second jack matching with the second inserted link, in the second through hole being connected with described the second jack, be provided with the second steel ball matching with the second groove, described the second steel ball fixes in described the second groove by gland.
The guider of 12. rear pull type hip replacements as claimed in claim 11, is characterized in that, described the second groove is annular groove.
The guider of 13. rear pull type hip replacements as claimed in claim 11, is characterized in that, between described the second steel ball and gland, is also provided with the second spring, and the inwall of described gland and the second socket is inconsistent.
The guider of 14. rear pull type hip replacements as claimed in claim 13, is characterized in that, the quantity of described the second through hole is 2-4, and each second through hole is from inner the second steel ball, the second spring and the gland of being outwards all disposed with.
The guider of 15. rear pull type hip replacements as claimed in claim 14, is characterized in that, described a plurality of the second through holes being circumferentially uniformly distributed along the second socket.
The guider of 16. rear pull type hip replacements as claimed in claim 9, it is characterized in that, the bottom of described acetabular cup adapter and handle is fixedly linked by the second inserted link and second jack of mutual coupling, described the second inserted link is arranged on the mount pad of acetabular cup adapter, described the second jack is arranged on the bottom of handle, described the second inserted link is provided with the second groove, in the second through hole being connected with described the second jack, be provided with the second steel ball matching with the second groove, the outer surface of described the second jack is provided with front pushing sleeve cylinder, described the second steel ball fixes in the second groove by front pushing sleeve cylinder.
The guider of 17. rear pull type hip replacements as claimed in claim 16, it is characterized in that, the shape of described the second inserted link and the second jack is cylindrical, front pushing sleeve cylinder comprises the 4th cavity and the 5th cavity of different-diameter, the inwall of described the 4th cavity and the second steel ball are inconsistent, and the diameter of described the 5th cavity is greater than the diameter of the 4th cavity.
The guider of 18. rear pull type hip replacements as claimed in claim 17, is characterized in that, in described the 5th cavity, is arranged with the second spring and the second check ring.
The guider of 19. rear pull type hip replacements as described in claim 1-18 any one, is characterized in that, the upper end of described handle is provided with rotatable handle, and described handle is provided with the wave lines of the hand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420208980.XU CN203885669U (en) | 2014-04-25 | 2014-04-25 | Guide device for rear-pull type replacement of hip joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420208980.XU CN203885669U (en) | 2014-04-25 | 2014-04-25 | Guide device for rear-pull type replacement of hip joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203885669U true CN203885669U (en) | 2014-10-22 |
Family
ID=51712125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420208980.XU Expired - Lifetime CN203885669U (en) | 2014-04-25 | 2014-04-25 | Guide device for rear-pull type replacement of hip joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203885669U (en) |
-
2014
- 2014-04-25 CN CN201420208980.XU patent/CN203885669U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181224 Address after: Room 316, No. 112, Fangzhong Street, Suzhou Industrial Park, Jiangsu Province Patentee after: SUZHOU MICROPORT ORTHORECON Co.,Ltd. Address before: 201318 twenty-third, 1-28 Lane 588, Tian Xiong Road, Zhou Pu town, Pudong New Area, Shanghai Patentee before: Shanghai Microport Orthopedics Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141022 |