CN113367860A - Femoral stem prosthesis beating and pulling device - Google Patents
Femoral stem prosthesis beating and pulling device Download PDFInfo
- Publication number
- CN113367860A CN113367860A CN202110585705.4A CN202110585705A CN113367860A CN 113367860 A CN113367860 A CN 113367860A CN 202110585705 A CN202110585705 A CN 202110585705A CN 113367860 A CN113367860 A CN 113367860A
- Authority
- CN
- China
- Prior art keywords
- femoral stem
- connecting rod
- stem prosthesis
- sliding
- sliding rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/4607—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of hip femoral endoprostheses
Abstract
The application relates to a medical instrument, especially relates to a femoral stem prosthesis extractor, and its technical scheme main points are: the fixing device comprises a fixing sleeve and a fixing screw, wherein the fixing screw penetrates through the cylinder wall of the fixing sleeve and is in threaded connection with the cylinder wall of the fixing sleeve; a sliding rod is arranged on the fixed sleeve, a sliding hammer is connected on the sliding rod in a sliding mode, and a stopping portion used for preventing the sliding hammer from falling off from the sliding rod is arranged at one end, away from the fixed sleeve, of the sliding rod; the femoral stem prosthesis can be conveniently pulled out from the medullary cavity.
Description
Technical Field
The application relates to a medical instrument, in particular to a femoral stem prosthesis extractor.
Background
The artificial hip joint prosthesis is worn to different degrees to cause inconvenience for the movement of a patient, and a hip joint revision operation is needed to recover the movement function of the artificial hip joint; the femoral stem prosthesis implanted in the medullary cavity needs to be pulled out in the hip revision replacement operation, and the femoral stem prosthesis is difficult to pull out from the medullary cavity due to the bone ingrowth effect between the femoral stem prosthesis and the medullary cavity; the existing femoral stem prosthesis pulling method is that a thin blade is inserted between the femoral stem prosthesis and the medullary cavity wall and the bone in-growth part between the femoral stem prosthesis and the medullary cavity wall is peeled off, and then the femoral stem prosthesis is pulled out from the inside of the medullary cavity in a knocking or pulling mode, so that labor is wasted.
Disclosure of Invention
In order to facilitate the femoral stem prosthesis to be pulled out from the inner part of the medullary cavity, the application provides a femoral stem prosthesis pulling device.
The application provides a femoral stem prosthesis knockout device adopts following technical scheme:
a femoral stem prosthesis knockout device comprises a fixing sleeve and a fixing screw, wherein the fixing screw penetrates through the cylinder wall of the fixing sleeve and is in threaded connection with the cylinder wall of the fixing sleeve; the fixed sleeve is provided with a slide bar, the slide bar is connected with a slide hammer in a sliding way, and one end of the slide bar, which is far away from the fixed sleeve, is provided with a stopping part for preventing the slide hammer from falling off from the slide bar.
By adopting the technical scheme, when the femoral stem prosthesis needs to be pulled out from the medullary cavity, the femoral neck is inserted into the fixing sleeve, the fixing screw is rotated to enable the fixing screw to move towards the direction close to the axis of the fixing sleeve until the end face of the fixing screw abuts against one side of the femoral neck close to the femoral stem prosthesis, and meanwhile, the peripheral surface of the fixing screw abuts against the end face of the femoral neck close to the femoral stem prosthesis; at the moment, the sliding hammer is lifted to slide on the sliding rod, the sliding hammer impacts the stopping part for many times, the sliding rod exerts pulling force on the femoral stem prosthesis through the fixing sleeve and extracts the femoral stem prosthesis from the inner part of the medullary cavity, and therefore the femoral stem prosthesis is convenient to extract from the inner part of the medullary cavity.
Preferably, one end of the fixed sleeve is provided with a connecting plate, a connecting rod is hinged to the connecting plate, and the connecting rod is coaxially and fixedly connected with the sliding rod.
By adopting the technical scheme, the connection between the slide rod and the connecting plate is realized through the detachable connection between the connecting rod and the connecting plate; in the actual process of pulling out the femoral stem prosthesis, when the direction of the tension force of the femoral stem prosthesis is parallel to the axis of the femoral stem prosthesis, labor is saved; through the hinging of the sliding rod and the connecting plate, in the process of extracting the femoral stem prosthesis, the included angle between the sliding rod and the connecting plate is adjusted according to the included angle between the femoral neck and the femoral stem prosthesis, namely the position relation, until the axis of the sliding rod is parallel to the axis of the femoral stem prosthesis or a smaller included angle exists, and then the effect of saving labor is achieved aiming at the body difference of patients.
Preferably, the connecting rod is detachably connected with the sliding rod.
By adopting the technical scheme, when the femoral stem prosthesis needs to be pulled out from the medullary cavity, the sliding rod is arranged on the connecting rod; when the femoral stem prosthesis extractor is not needed to be used, the sliding rod is detached from the connecting rod together with the sliding hammer and the stopping part, so that the femoral stem prosthesis extractor is convenient to carry.
Preferably, the end face of the connecting rod, which is close to the sliding rod, is provided with a mounting hole for the sliding rod to be screwed in.
Through adopting above-mentioned technical scheme, the threaded connection through connecting rod and slide bar realizes dismantling fixed connection of connecting rod and slide bar, and then realizes linking firmly or dismantling between connecting rod and the slide bar through the rotation each other between connecting rod and the slide bar.
Preferably, a screwing part for facilitating the free-hand rotation of the connecting rod is processed on the circumferential surface of one end of the connecting rod, which is close to the sliding rod.
Preferably, one side of connecting plate is seted up and is supplied connecting rod pivoted hole of stepping down, is fixed with the articulated shaft on the pore wall in hole of stepping down, and the articulated shaft radially runs through the connecting rod and rotates with the connecting rod along the connecting rod to be connected.
Through adopting above-mentioned technical scheme, the articulated relation between articulated shaft realization connecting rod, slide bar and the connecting plate, when the angle of slide bar needs to be adjusted, through the rotation each other between articulated rod and the connecting rod and then realize the angle change between slide bar and the connecting plate and be the contained angle change between the axis of slide bar and femoral stem prosthesis.
Preferably, the fixing screws are provided in plurality and distributed along the circumferential direction of the fixing sleeve.
Through adopting above-mentioned technical scheme, a plurality of set screws play limiting displacement to a plurality of positions that the thighbone neck is global, and then have improved the fixed position relation between thighbone neck and the fixed sleeve.
Preferably, the fixing screw is a hand screw which can be rotated by hands.
By adopting the technical scheme, the rotation of the fixing screw on the fixing sleeve in the operation process is facilitated.
In summary, the present application has the following technical effects:
1. the fixing sleeve, the fixing screw, the sliding rod, the sliding hammer and the stopping part are arranged, the sliding hammer is lifted to slide on the sliding rod, the sliding hammer impacts the stopping part for many times, the sliding rod exerts pulling force on the femoral stem prosthesis through the fixing sleeve and extracts the femoral stem prosthesis from the inner part of the medullary cavity, and therefore the femoral stem prosthesis can be conveniently extracted from the inner part of the medullary cavity;
2. through having set up mutual articulated connecting rod and connecting plate, the connecting plate sets up on fixed sleeve, slide bar and connecting rod fixed connection, at the in-process that carries out femoral stem prosthesis and extract, according to the contained angle adjustment slide bar of femoral neck and femoral stem prosthesis and the contained angle of connecting plate promptly the position relation, parallel or the less contained angle that exists of the axis of slide bar and femoral stem prosthesis, and then the realization has reached laborsaving effect to patient's health difference.
Drawings
FIG. 1 is an overall structure view of a femoral stem prosthesis extractor in accordance with a first embodiment;
FIG. 2 is an exploded view of the assembly of the fixation assembly to the femoral neck in accordance with one embodiment;
FIG. 3 is an overall configuration diagram of a fixing member in the first embodiment;
fig. 4 is an overall configuration diagram of the femoral stem prosthesis extractor in the second embodiment.
In the figure, 1, fixing the assembly; 11. fixing the sleeve; 12. a set screw; 13. a connecting plate; 131. a hole of abdication; 14. a connecting rod; 141. mounting holes; 142. a screwing part; 15. hinging a shaft; 2. a force application assembly; 21. a slide bar; 22. a slide hammer; 23. a stopper portion; 3. a femoral stem prosthesis; 4. a femoral neck; 5. and (6) positioning the bolt.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
Example one
Referring to fig. 1 and 2, the application provides a femoral stem prosthesis extractor, including fixed subassembly 1 and application of force subassembly 2, application of force subassembly 2 sets up on fixed subassembly 1, and fixed subassembly 1 can be fixed on femoral neck 4, exerts pulling force and then extracts femoral stem prosthesis 3 from the intramedullary canal inside through application of force subassembly 2 to femoral stem prosthesis 3.
Referring to fig. 1 and 3, the fixing assembly 1 includes a cylindrical fixing sleeve 11 with a hollow inside, four fixing screws 12 are disposed on the circumferential surface of the fixing sleeve 11, and the four fixing screws 12 are uniformly distributed along the circumferential direction of the fixing sleeve 11; the axis of the fixing screw 12 extends along the radial direction of the fixing sleeve 11 and the fixing screw 12 is in threaded connection with the cylinder wall of the fixing sleeve 11; the fixing screw 12 is a hand-screwed screw which can be rotated by hands, and the hand-screwed screw can be one of disc-shaped screws, knurled screws or plum-blossom-shaped rubber head screws and the like; one end of the fixed sleeve 11 is integrally formed with a rectangular connecting plate 13, and the surface of the connecting plate 13 is perpendicular to the axis of the fixed sleeve 11 and extends to one side of the fixed sleeve 11; a connecting rod 14 is arranged on the connecting plate 13, and the force application assembly 2 is arranged on the connecting rod 14.
Referring to fig. 2 and 3, when the femoral stem prosthesis 3 needs to be pulled out, the fixing sleeve 11 is sleeved on the femoral neck 4, the femoral neck 4 is moved to one side of the fixing screw 12 close to the connecting plate 13, then the fixing screw 12 is rotated to move the fixing screw 12 along the radial direction of the fixing sleeve 11 to the axis close to the fixing sleeve 11, namely the axis direction of the femoral neck 4, until the end of the fixing screw 12 abuts against the peripheral surface of the femoral neck 4, and at this time, the peripheral surface of the fixing screw 12 abuts against the end surface of the femoral neck 4 close to the femoral stem prosthesis 3; this achieves a fixation of the fixing sleeve 11 on the femoral neck 4, i.e. a fixation of the position between the fixation assembly 1 and the femoral stem prosthesis 3.
Referring to fig. 1 and 2, further, the force application assembly 2 includes a sliding rod 21 coaxially fixed on the connecting rod 14, a sliding hammer 22 adapted to the sliding rod 21 is coaxially sleeved on the sliding rod 21, and the sliding hammer 22 is slidably connected with the sliding rod 21; a stopping part 23 is fixed at one end of the sliding rod 21 far away from the connecting rod 14, and the diameter of the stopping part 23 is larger than that of the sliding rod 21, so that the sliding hammer 22 can be prevented from falling off from the sliding rod 21 in the direction far away from the connecting rod 14; after the fixing sleeve 11 is fixed on the femoral neck 4, the sliding hammer 22 is pulled up and down to enable the sliding hammer 22 to slide on the sliding rod 21, the sliding hammer 22 impacts the stopping part 23 for multiple times, the sliding rod 21 exerts pulling force on the femoral stem prosthesis 3 through the fixing sleeve 11 and extracts the femoral stem prosthesis 3 from the inside of the medullary cavity, and therefore the femoral stem prosthesis 3 can be conveniently extracted from the inside of the medullary cavity.
For the slide rod 21 fixed on the connecting rod 14, the slide rod 21 and the connecting rod 14 may be integrally formed, but in order to detach the slide rod 21 with the slide hammer 22 and the stopping portion 23 from the connecting rod 14 when the femoral stem prosthesis extractor is not needed, so as to facilitate carrying of the femoral stem prosthesis extractor, the slide rod 21 and the connecting rod 14 may also be detachably and fixedly connected, in this embodiment, it is further explained that a mounting hole 141 for screwing the slide rod 21 is coaxially formed on the end surface of the connecting rod 14, the connecting rod 14 and the slide rod 21 are detachably and fixedly connected by the threaded connection of the connecting rod 14 and the slide rod 21, and the connecting rod 14 and the slide rod 21 are fixedly connected or detached by mutual rotation between the connecting rod 14 and the slide rod 21.
In order to facilitate the mutual rotation between the connecting rod 14 and the sliding rod 21, a screwing part 142 for facilitating the free-hand rotation of the connecting rod 14 is processed on the peripheral surface of one end of the connecting rod 14 close to the sliding rod 21, and the screwing part 142 is in a quincunx shape or a cylindrical shape with knurled surface and the like and can increase the friction force between the hand surface and the connecting rod 14; in the present embodiment, the screw portion 142 having a quincunx radial cross-sectional shape is used as the screw portion 142.
Referring to fig. 3, in order to achieve a more labor-saving effect, the connecting plate 13 is hinged to the connecting rod 14, and further, a yielding hole 131 penetrating through the connecting plate 13 along a direction parallel to an axis of the fixing sleeve 11 is formed in one side of the connecting plate 13 away from the fixing sleeve 11, a hinge shaft 15 is fixed between two hole walls opposite to the yielding hole 131, and the axis of the hinge shaft 15 is perpendicular to the axis of the fixing sleeve 11; the hinge shaft 15 penetrates the connecting rod 14 in the radial direction of the connecting rod 14 and is rotatably connected with the connecting rod 14, thereby realizing the hinge connection between the connecting rod 14 and the connecting plate 13.
Referring to fig. 1 and 3, when the angle of the sliding rod 21 needs to be adjusted, the angle change between the sliding rod 21 and the connecting plate 13, namely the included angle change between the sliding rod 21 and the axis of the femoral stem prosthesis 3, is realized through the mutual rotation between the hinge rod and the connecting rod 14; the reason for such arrangement is that in the process of actually pulling out the femoral stem prosthesis 3 from the medullary cavity, when the direction of the tension force of the femoral stem prosthesis 3 is parallel to the axis of the femoral stem prosthesis 3 or the included angle is small, the labor is saved; through the hinging of the sliding rod 21 and the connecting plate 13, the included angle between the sliding rod 21 and the connecting plate 13 is adjusted according to the included angle between the femoral neck 4 and the femoral stem prosthesis 3 until the axis of the sliding rod 21 is parallel to the axis of the femoral stem prosthesis 3 or a smaller included angle exists, so that the effect of saving labor is achieved for the difference between different femoral necks 4 and different femoral stem prostheses 3.
Example two
Referring to fig. 4, the present embodiment is different from the first embodiment in that the detachable fixed connection manner between the sliding rod 21 and the connecting rod 14 is different, and it is further explained that the hole wall of the installation hole 141 in the present embodiment is smooth, and the sliding rod 21 is directly inserted into the connecting rod 14 through the installation hole 141; meanwhile, a positioning bolt 5 extending along the radial direction of the connecting rod 14 is arranged to penetrate through the connecting rod 14 and the sliding rod 21, and the positioning bolt 5 is fixed on the connecting rod 14 through a nut, so that the connecting rod 14 and the sliding rod 21 can be detachably and fixedly connected.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (8)
1. The utility model provides a femoral stem prosthesis knockout ware which characterized in that: the fixing device comprises a fixing sleeve (11) and a fixing screw (12), wherein the fixing screw (12) penetrates through the cylinder wall of the fixing sleeve (11) and is in threaded connection with the cylinder wall of the fixing sleeve (11); a sliding rod (21) is arranged on the fixed sleeve (11), a sliding hammer (22) is connected on the sliding rod (21) in a sliding mode, and a stopping portion (23) used for preventing the sliding hammer (22) from falling off from the sliding rod (21) is arranged at one end, far away from the fixed sleeve (11), of the sliding rod (21).
2. The femoral stem prosthesis extractor as claimed in claim 1, wherein: one end of the fixed sleeve (11) is provided with a connecting plate (13), the connecting plate (13) is hinged with a connecting rod (14), and the connecting rod (14) is coaxially and fixedly connected with the sliding rod (21).
3. The femoral stem prosthesis extractor as claimed in claim 2, wherein: the connecting rod (14) is detachably connected with the sliding rod (21).
4. The femoral stem prosthesis extractor as claimed in claim 3, wherein: the end surface of the connecting rod (14) close to the sliding rod (21) is provided with a mounting hole (141) for screwing the sliding rod (21).
5. The femoral stem prosthesis extractor as claimed in claim 4, wherein: the circumferential surface of one end of the connecting rod (14) close to the sliding rod (21) is provided with a screwing part (142) which is convenient for the connecting rod (14) to rotate by hands.
6. The femoral stem prosthesis extractor as claimed in any one of claims 2-5, wherein: one side of the connecting plate (13) is provided with a yielding hole (131) for the connecting rod (14) to rotate, a hinge shaft (15) is fixed on the hole wall of the yielding hole (131), and the hinge shaft (15) penetrates through the connecting rod (14) along the radial direction of the connecting rod (14) and is rotatably connected with the connecting rod (14).
7. The femoral stem prosthesis extractor as claimed in claim 1, wherein: the fixing screws (12) are arranged in a plurality and distributed along the circumferential direction of the fixing sleeve (11).
8. The femoral stem prosthesis extractor as claimed in claim 1, wherein: the fixing screw (12) adopts a hand screw which can be rotated by hands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110585705.4A CN113367860A (en) | 2021-05-27 | 2021-05-27 | Femoral stem prosthesis beating and pulling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110585705.4A CN113367860A (en) | 2021-05-27 | 2021-05-27 | Femoral stem prosthesis beating and pulling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113367860A true CN113367860A (en) | 2021-09-10 |
Family
ID=77572166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110585705.4A Pending CN113367860A (en) | 2021-05-27 | 2021-05-27 | Femoral stem prosthesis beating and pulling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113367860A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113730051A (en) * | 2021-09-29 | 2021-12-03 | 天衍医疗器材有限公司 | Combined femoral stem installer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4222382A (en) * | 1979-01-26 | 1980-09-16 | Massachusetts Institute Of Technology | Femoral component hip joint prosthesis extractor |
| WO2011161291A1 (en) * | 2010-06-24 | 2011-12-29 | Marcelo Oscar Feijoo | Femoral prosthesis extractor for checks and extraction method |
| CN205459225U (en) * | 2016-03-25 | 2016-08-17 | 嘉思特华剑医疗器材(天津)有限公司 | Interlock formula type femoral stem takes out apparatus subassembly |
| CN106420122A (en) * | 2016-08-31 | 2017-02-22 | 北京爱康宜诚医疗器材有限公司 | Femoral stem taking-out device and femoral stem taking-out system |
| CN206659971U (en) * | 2016-12-22 | 2017-11-24 | 上海科太迈迪医疗器械有限公司 | Femoral stem locks removal equipment |
| CN110314022A (en) * | 2019-07-23 | 2019-10-11 | 天津正天医疗器械有限公司 | A kind of femoral head prosthesis driver-extractor |
-
2021
- 2021-05-27 CN CN202110585705.4A patent/CN113367860A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4222382A (en) * | 1979-01-26 | 1980-09-16 | Massachusetts Institute Of Technology | Femoral component hip joint prosthesis extractor |
| WO2011161291A1 (en) * | 2010-06-24 | 2011-12-29 | Marcelo Oscar Feijoo | Femoral prosthesis extractor for checks and extraction method |
| CN205459225U (en) * | 2016-03-25 | 2016-08-17 | 嘉思特华剑医疗器材(天津)有限公司 | Interlock formula type femoral stem takes out apparatus subassembly |
| CN106420122A (en) * | 2016-08-31 | 2017-02-22 | 北京爱康宜诚医疗器材有限公司 | Femoral stem taking-out device and femoral stem taking-out system |
| CN206659971U (en) * | 2016-12-22 | 2017-11-24 | 上海科太迈迪医疗器械有限公司 | Femoral stem locks removal equipment |
| CN110314022A (en) * | 2019-07-23 | 2019-10-11 | 天津正天医疗器械有限公司 | A kind of femoral head prosthesis driver-extractor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113730051A (en) * | 2021-09-29 | 2021-12-03 | 天衍医疗器材有限公司 | Combined femoral stem installer |
| CN113730051B (en) * | 2021-09-29 | 2024-02-09 | 天衍医疗器材有限公司 | Combined femur stem installer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2665447B1 (en) | Adapter for explant system | |
| EP2055273B1 (en) | Taper disengagement tool | |
| EP3244839B1 (en) | Assembly tool | |
| EP2561835B1 (en) | Straight cup impactor | |
| US4135517A (en) | Femoral prosthesis trial fitting device | |
| EP2057969B1 (en) | Modular Taper Assembly Device | |
| WO2012093368A4 (en) | A retractor for use in surgery | |
| AU2005298507A1 (en) | Modular humeral prosthesis for an inverse shoulder prosthesis | |
| KR20000070929A (en) | Hip prosthesis and method for fitting such hip prosthesis | |
| EP2476397A1 (en) | Straight cup impactor with lever arm | |
| CN104042365B (en) | The prosthetic component close for joint line and method | |
| US20110302760A1 (en) | Spiral assembly tool | |
| US9095452B2 (en) | Disassembly tool | |
| CN113367860A (en) | Femoral stem prosthesis beating and pulling device | |
| EP3242635B1 (en) | Joint prosthesis with removal device | |
| WO2012006508A2 (en) | Methods and devices for removing a prosthesis | |
| US11331133B2 (en) | Orthopaedic redressing device | |
| CN204951039U (en) | Be used for restoreing defective device of ligament or tendon | |
| CN110522494B (en) | Acetabular file concentricity maintaining device | |
| CN112120771A (en) | Movable external fixing frame for traction hip joint | |
| RU2042345C1 (en) | Total endoprosthesis of femur | |
| CN219439572U (en) | Device for separating a ball head from a femoral stem | |
| CN214342541U (en) | Movable external fixing frame for traction hip joint | |
| CN220512959U (en) | Prosthesis depth limiting installation device | |
| CN209404916U (en) | Intramedullary nail is implanted into replacement and fixation structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210910 |