CN111150481A - Acetabulum outer cup installer - Google Patents
Acetabulum outer cup installer Download PDFInfo
- Publication number
- CN111150481A CN111150481A CN202010054787.5A CN202010054787A CN111150481A CN 111150481 A CN111150481 A CN 111150481A CN 202010054787 A CN202010054787 A CN 202010054787A CN 111150481 A CN111150481 A CN 111150481A
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- Prior art keywords
- shell
- installer
- lever
- housing
- tip
- Prior art date
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Links
- 210000000588 acetabulum Anatomy 0.000 title claims abstract description 46
- 230000002093 peripheral effect Effects 0.000 claims description 32
- 210000004369 blood Anatomy 0.000 description 6
- 239000008280 blood Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 210000001519 tissue Anatomy 0.000 description 5
- 210000000988 bone and bone Anatomy 0.000 description 4
- 239000012634 fragment Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 1
- 210000004394 hip joint Anatomy 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011012 sanitization Methods 0.000 description 1
- 108010048734 sclerotin Proteins 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011541 total hip replacement Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8875—Screwdrivers, spanners or wrenches
-
- 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
- A61F2/32—Joints for the hip
- A61F2/34—Acetabular cups
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Surgery (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Vascular Medicine (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
The invention belongs to the technical field of medical instruments and discloses an acetabulum outer cup installer which comprises an operating rod and an operating end head assembly detachably connected with the operating rod, wherein the operating end head assembly comprises an end head shell detachably connected with the operating rod and a movable rod which is positioned in the end head shell and detachably connected with the end head shell, one end of the movable rod is constructed to be elastically abutted against the end part of the operating rod, and the other end of the movable rod is constructed to extend out of the end head shell without external force and retract into the end head shell with external force. The acetabulum outer cup installer can be thoroughly cleaned, and is more sanitary.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to an acetabulum outer cup installer.
Background
The acetabulum outer cup installation device is a surgical instrument used for installing an acetabulum outer cup in a hip joint total hip replacement operation. The existing acetabulum outer cup installer structure comprises a handle, a clamping nut, a positioning pin, a positioning block, a base, an installer rod, an end head, a spring, a pin and a screw rod, wherein the screw rod, the pin and the spring are assembled inside the end head of the acetabulum outer cup installer, the end head is welded on the acetabulum outer cup installer rod, and then the screw rod is connected with a thread on the acetabulum outer cup to align and press-fit the acetabulum outer cup to be implanted into the acetabulum part of a human body.
Although the acetabulum outer cup installer in the prior art can realize the function of installing the acetabulum outer cup, in the process of installing the metal outer cup into the acetabulum part of a human body, sclerotin, blood and the like of the human body fall into gaps of the acetabulum outer cup installer, and only the surface of the acetabulum outer cup installer can be cleaned during disinfection and cleaning, so that the inner part and the gaps cannot be thoroughly cleaned. However, the acetabular cup installer is not a disposable instrument and can present certain safety and health concerns if not thoroughly sanitized.
In view of the shortcomings of the prior art acetabular cup mounters, it would be desirable to provide a more sanitary acetabular cup mounter that can be cleaned thoroughly.
Disclosure of Invention
In order to solve all or part of the problems, the invention aims to provide an acetabular cup installer which can be cleaned thoroughly and more hygienically so as to reduce potential safety and sanitation hazards.
The acetabulum outer cup installer comprises an operating rod and an operating end head assembly detachably connected with the operating rod, wherein the operating end head assembly comprises an end head shell detachably connected with the operating rod and a movable rod which is positioned in the end head shell and detachably connected with the end head shell, one end of the movable rod is configured to be elastically abutted against the end part of the operating rod, and the other end of the movable rod is configured to extend out of the end head shell without external force and retract into the end head shell with external force.
Furthermore, one of the end of the operating rod connected with the end shell and the end of the end shell connected with the operating rod is provided with a positioning bulge, and the other end is sleeved and fixed on the peripheral wall of the positioning bulge.
Furthermore, the end of the operating rod connected with the end shell is provided with a positioning bulge, and the end of the end shell connected with the operating rod is sleeved and fixed on the peripheral wall of the positioning bulge.
Furthermore, a first radial through hole is formed on the positioning protrusion, a second radial through hole is formed on the outer peripheral wall of one end, connected with the operating rod, of the end head shell, and the acetabular cup installer further comprises a fixing piece which is used for penetrating through the first radial through hole and the second radial through hole so as to fix the operating rod and the end head shell together.
Furthermore, the end of the operating rod connected with the end shell further comprises an anti-rotation protrusion formed on the peripheral wall of the positioning protrusion, and an anti-rotation groove used for avoiding the anti-rotation protrusion is formed at the end of the end shell connected with the operating rod.
Preferably, the rotation preventing protrusion is provided in plurality at intervals formed on the outer circumferential wall of the positioning protrusion.
Further, a guide groove is formed on one of the inner peripheral wall of the tip housing and the outer peripheral wall of the movable rod, and a guide projection which is fitted with the guide groove is formed on the other.
Furthermore, a guide groove is formed on the inner peripheral wall of the end shell, and a guide protrusion matched with the guide groove is formed on the outer peripheral wall of the movable rod.
Further, the end shell comprises a first shell connected with the operating rod and a second shell coaxially connected with the first shell, the outer diameter of the first shell is larger than that of the second shell, the movable rod comprises a first rod section and a second rod section coaxially connected with the first rod section, the outer diameter of the first rod section is larger than that of the second rod section, the guide groove is formed in the inner peripheral wall of the first shell, the guide protrusion is formed in the outer peripheral wall of the first rod section, and the inner diameter of the second shell is the same as that of the second rod section.
Further, a strip-shaped through groove is formed in the peripheral wall of the first shell.
Preferably, the strip-shaped through grooves are arranged along the length direction of the first housing.
Further preferably, the strip-shaped through grooves are provided in plurality formed on the outer peripheral wall of the first housing.
It is also preferred that the strip-shaped through grooves are distributed at intervals.
Furthermore, the length of the fixing piece is smaller than or equal to the outer diameter of the end head shell, the length of the fixing piece is larger than the outer diameter of the positioning protrusion, and the acetabulum outer cup installer further comprises a sleeve sleeved on the outer peripheral wall of the first shell of the end head shell.
Compared with the prior art, the acetabulum outer cup installer is simple in structure and convenient to operate, the operation rod and the end head shell are arranged, the end head shell and the movable rod are detachably connected, so that the acetabulum outer cup installer can be disassembled into a plurality of parts, and human bone fragments, blood and tissues in all parts, joints of all parts and gaps inside the acetabulum outer cup installer can be thoroughly cleaned by respectively or simultaneously cleaning the parts, so that the thorough cleaning effect is realized, and the potential safety and sanitation hazards are reduced.
Drawings
FIG. 1 is a cross-sectional view of an acetabular cup installer according to an embodiment of the invention;
FIG. 2 is a schematic perspective view of an acetabular cup installer according to an embodiment of the invention, wherein the sleeve is not shown;
FIG. 3 is a schematic structural view of an acetabular cup installer according to an embodiment of the invention, showing a sleeve;
FIG. 4 is a schematic structural view of the tip housing shown in FIG. 2;
FIG. 5 is a bottom view of the tip housing shown in FIG. 2;
FIG. 6 is a schematic view of the lever of FIG. 2;
FIG. 7 is a schematic view of the movable bar shown in FIG. 2;
fig. 8 is a schematic view of the sleeve shown in fig. 2.
Detailed Description
For a better understanding of the objects, structure and function of the invention, the acetabular cup installer of the invention is described in further detail below with reference to the accompanying drawings.
Fig. 1-3 show a configuration of an acetabular cup installer 100 according to an embodiment of the present invention, including a lever 1 and an operation tip assembly 2 detachably connected to the lever 1, the operation tip assembly 2 including a tip housing 21 detachably connected to the lever 1, and a movable rod 22 detachably connected to the tip housing 21 and located inside the tip housing 21, wherein one end of the movable rod 22 is configured to elastically abut against an end of the lever 1, and the other end is configured to extend to the outside of the tip housing 21 without external force and to retract to the inside of the tip housing 21 with external force.
When the acetabulum outer cup installer 100 provided by the embodiment of the invention is used, firstly, the acetabulum outer cup is aligned to the acetabulum part of a human body, then the movable rod 22 of the acetabulum outer cup installer 100 is aligned to the installation center hole on the acetabulum outer cup, namely, the part of the movable rod 22 extending out of the end head shell 21 is inserted into the installation center hole of the acetabulum outer cup, at the moment, no external force is applied to the operating rod 1, and the part of the movable rod 22 extending out of the end head shell 21 can be connected with the acetabulum outer cup, so that the installation guide effect of the; then, an external force is applied to the operating rod 1, the part of the movable rod 22 extending out of the end head shell 21 is in contact with the acetabulum part of the human body, and at the moment, in the process that the operating rod 1 drives the acetabulum outer cup to be pressed on the acetabulum part of the human body, the part of the movable rod 22 extending out of the end head shell 21 is pressed into the end head shell 21 by the acetabulum part of the human body.
Because in the process of using the acetabulum outer cup installer 100 to press fit the acetabulum outer cup to the acetabulum part of the human body, bone fragments, blood and other tissues at the acetabulum part of the human body fall off, and part of the bone fragments, blood and other tissues can enter the inside of the acetabulum outer cup installer 100 through gaps of various parts of the acetabulum outer cup installer 100, the acetabulum outer cup installer in the prior art is generally of an integrated structure, so that the acetabulum outer cup installer is difficult to clean and disinfect thoroughly, and when the acetabulum outer cup installer is reused, great potential safety and sanitation hazards exist. In the acetabular cup installer 100 according to the embodiment of the present invention, the operation rod 1 and the operation end assembly 2 are detachably connected, and the end shell 21 of the operation end assembly 2 and the movable rod 22 located in the end shell 21 are also detachably connected, so that all the components of the acetabular cup installer 100 can be completely cleaned after the use is completed, respectively or simultaneously, and therefore, the acetabular cup installer 100 according to the present invention is more sanitary to use, and the potential safety hazard of sanitation is greatly reduced.
As shown in fig. 1, the movable rod 22 may elastically abut against an end of the operation rod through an elastic member 23, and the elastic member 23 may be a spring, a rubber pad with a large elastic force, or the like, which enables one end of the movable rod 22 to extend to the outside of the tip housing 21 without an external force and to retract to the inside of the tip housing 21 with an external force. Preferably a spring.
In some preferred embodiments, one of the end of the operating rod 1 connected to the tip casing 21 and the end of the tip casing 21 connected to the operating rod 1 may have a positioning protrusion formed thereon, and the other may be fitted and fixed to an outer peripheral wall of the positioning protrusion.
In the embodiment shown in fig. 1, 2, 4 and 7, the end of the operating rod 1 connected to the tip casing 21 may be formed with the positioning protrusion 11, and the end of the tip casing 21 connected to the operating rod 1 may be fixed to the outer peripheral wall of the positioning protrusion 11 in a sleeved manner. The connecting between the operating rod 1 and the end shell 21 can realize the simpler and more convenient disassembly and installation of the operating rod 1 and the end shell 21 by a sleeving and fixing mode.
According to the acetabular cup mounter 100 of the embodiment of the present invention, as shown in fig. 4 and 6, the positioning protrusion 11 may be formed with a first radial through hole 111, and the outer peripheral wall of the end of the tip housing 21 connected to the operation rod 1 may be formed with a second radial through hole 211, and the acetabular cup mounter 100 may further include a fixing member 3 (shown in fig. 1), the fixing member 3 being adapted to pass through the first radial through hole 111 and the second radial through hole 211 to fix the operation rod 1 and the tip housing 21 together. The arrangement makes the fixation between the end shell 21 and the operating rod 1 simpler and more convenient, and when the end shell 21 and the operating rod 1 need to be disassembled, the fixing pieces 3 in the first radial through hole 111 and the second radial through hole 211 only need to be ejected out through an external tool.
It should be noted that the operating rod 1 and the head housing 21 may be connected by the fixing member 3 (preferably, a positioning pin) in the embodiment shown in fig. 2, or may be screwed by forming internal and external threads on the positioning protrusion 11 or on the inner wall of the head housing 21.
As shown in fig. 4 and 6, the end of the operating lever 1 connected to the tip case 21 may further include an anti-rotation protrusion 12 formed on the outer circumferential wall of the positioning protrusion 11, and the end of the tip case 21 connected to the operating lever 1 may be formed with an anti-rotation groove 212 for avoiding the anti-rotation protrusion 12. Through the arrangement, the operation rod 1 and the end shell 21 cannot rotate in the circumferential direction after being sleeved, and when the end shell 21 and the operation rod 1 have the trend of relative rotation movement, the locking effect of the fixing piece 3 in the rotation direction can be distributed, so that the connection between the operation rod 1 and the end shell 21 is more stable.
In a preferred embodiment, the rotation preventing protrusion 12 may be provided in plurality at intervals formed on the outer circumferential wall of the positioning protrusion 11. The arrangement of the plurality of anti-rotation protrusions 12 enables the anti-rotation protrusions 12 to have better anti-rotation effect when the operating rod 1 and the head shell 21 have relative rotation movement tendency, because the operating rod 1 and the head shell 21 have larger contact area.
Further preferably, the rotation preventing protrusions 12 may be two formed at opposite sides of the positioning protrusion 11. The rotation-preventing protrusion 12 has a good rotation-preventing function and can simplify the production process.
According to the acetabular cup mounter 100 of the embodiment of the present invention, one of the inner circumferential wall of the tip housing 21 and the outer circumferential wall of the movable rod 22 may be formed with a guide groove, and the other may be formed with a guide projection that mates with the guide groove.
In a preferred embodiment shown in fig. 4, 5 and 7, the head housing 21 may have a guide groove 213 formed on an inner circumferential wall thereof, and the movable lever 22 may have a guide projection 223 formed on an outer circumferential wall thereof to be engaged with the guide groove 213. Through this setting make after guide way 213 and the cooperation of direction arch 223 movable rod 22 in end shell 21 the motion direction be injectd to the motion along the common axis direction of end shell 21, action bars 1, because only the motion of one direction consequently can effectively avoid rocking of movable rod 22 to realize the steady motion of movable rod 2 for end shell 21.
Preferably, as shown in fig. 5, the guide groove 213 may include a plurality of grooves equally spaced on the outer circumferential wall of the movable lever 22. By this arrangement, the fitting of the guide groove 213 and the guide projection 223 is more stable, so that the axial movement of the movable rod 22 is more stable.
In acetabular cup installer 100 according to embodiments of the present invention, as shown in fig. 4, tip shell 21 may include a first shell 214 coupled to lever 1 and a second shell 215 coaxially coupled to first shell 214, the first shell 214 may have an outer diameter dimension greater than an outer diameter dimension of second shell 215, as shown in fig. 7, movable lever 22 may include a first lever segment 221 and a second lever segment 222 coaxially coupled to first lever segment 221, the first lever segment 221 may have an outer diameter dimension greater than an outer diameter dimension of second lever segment 222, guide groove 213 may be formed on an inner circumferential wall of first shell 214 (as shown in fig. 5), guide projection 223 may be formed on an outer circumferential wall of first lever segment 221, and the second shell 215 may have an inner diameter dimension equal to an outer diameter dimension of second lever segment 222. By this arrangement, on the one hand, the guide projection 223 of the movable rod 22 is engaged with the guide groove 213 on the inner peripheral wall of the first housing 214, and the second rod section 222 of the movable rod 22 is accommodated in the first housing 214, and the first rod section 221 can extend from the second housing 215 to the outside of the head housing 21, which is reasonable in structure and saves space, and on the other hand, the inner diameter of the first housing 214 can be set to be larger than the outer diameter of the first rod section 222, so that the first rod section 222 has less resistance to movement relative to the first housing 214, and the inner diameter of the second housing 215 is the same as the outer diameter of the second rod section 222, so that the second rod section 222 is tightly engaged with the second housing 215 when moving in the second housing 215, which has good movement smoothness, that is, the movable rod 22 can move smoothly relative to the head housing 214.
In the embodiment shown in fig. 4, a strip-shaped through groove 2145 may be further formed on the outer circumferential wall of the first housing 214. Through the arrangement, on one hand, the strip-shaped through groove 2145 can be used as a cleaning groove when the end shell 21 is detached for cleaning, cleaning liquid can enter from the strip-shaped through groove 2145 and can be cleaned to the inner dead angle of the end shell 21, on the other hand, the material can be reduced, so that the acetabulum cup installer 100 is lighter in weight and convenient to operate.
In a preferred embodiment, the strip-shaped through grooves 2145 may be provided in plural spaced apart on the peripheral wall of the first housing. The above arrangement allows the dead space inside the head housing 21 to be thoroughly cleaned through the strip-shaped through groove 2145.
According to the acetabular cup installer 100 of the embodiment of the invention, the length of the fixing member 3 can be smaller than or equal to the outer diameter of the tip shell 21, and the length of the fixing member 3 can be larger than the outer diameter of the positioning protrusion 11, and the acetabular cup installer 100 can further comprise a sleeve 4 (as shown in fig. 8) which is sleeved on the outer peripheral wall of the first shell 214 of the tip shell 21. Through the arrangement, after the fixing piece 3 passes through the end shell 21 and the operating rod 1 simultaneously to connect the end shell 21 and the operating rod 1 together, the fixing piece 3 cannot extend out of the first shell 214 of the end shell 21, so that the arrangement of the fixing piece 3 cannot interfere with the sleeve 4 sleeved on the peripheral wall of the first shell 214 of the end shell 21, and the sleeve 4 is convenient to install or disassemble. The sleeve 4 may be threadably coupled to the tip housing 21. as shown in fig. 3, the sleeve 4 may be configured such that the outer peripheral wall is closed to prevent debris, blood, and tissue from entering the interior of the acetabular cup installer 100 during normal use of the acetabular cup installer 100.
Of course, as shown in fig. 2, the sleeve 4 is not required to include the structure of the acetabular cup installer 100 of the invention, and the lever 1 may also be provided with a handle and a clamping nut, a locating pin, a locating block, a base, and the like, to optimize use by the user.
Compared with the prior art, the acetabulum outer cup installer 100 provided by the embodiment of the invention has the following advantages:
1) by detachably connecting the operating rod 1 and the operating end assembly 2 and also detachably connecting the end shell 21 of the operating end assembly 2 and the movable rod 22 positioned in the end shell 21, all parts of the acetabular cup installer 100 can be thoroughly cleaned respectively or simultaneously after the use is finished, so that the acetabular cup installer 100 is more sanitary to use and greatly reduces the potential safety hazard of sanitation.
2) Insert operating rod 1 and end shell 21 together fixedly in first radial through-hole 111, the second radial through-hole 211 through setting up mounting 3 and make the fixed between end shell 21 and the operating rod 1 more simple and convenient, when needs dismantle end shell 21 and operating rod 1, only need through the fixing piece 3 in the first radial through-hole 111 of external instrument ejection and the second radial through-hole 211.
3) The operation rod 1 is provided with the anti-rotation bulge 12, the end shell 214 is provided with the anti-rotation groove 212 matched with the anti-rotation bulge 12, so that the operation rod 1 and the end shell 21 cannot rotate in the circumferential direction after being sleeved, when the end shell 21 and the operation rod 1 have the trend of relative rotation movement, the stopping effect of the fixing piece 3 in the rotation direction can be distributed, and the connection between the operation rod 1 and the end shell 21 is more stable
4) Through set up guide way 213 on the inner wall of end shell 214, set up on movable rod 22 with guide way 213 complex guide projection 223 make movable rod 22 when moving in end shell 21 the motion direction be injectd to the motion along the common axis direction of end shell 21, action bars 1, because only the motion of one direction consequently can effectively avoid rocking of movable rod 22 to realize movable rod 2 for the steady motion of end shell 21.
5) Through set up bar through groove 2145 on the periphery wall of first shell 214 on the one hand make bar through groove 2145 can regard as the washing tank when dismantling tip shell 21 and wash, and the washing liquid gets into from bar through groove 2145, can wash the inside dead angle of tip shell 21, and reducible material of on the other hand is used for acetabular cup erector 100 weight is lighter, convenient operation.
6) By arranging the sleeve 4 to be sleeved on the outer peripheral wall of the first shell 214 of the tip shell 21, when the acetabular cup mounter 100 is in normal use, bone fragments, blood and tissues of a human body are reduced from entering the interior of the acetabular cup mounter 100.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. An acetabulum outer cup installer is characterized by comprising an operating rod and an operating end head assembly detachably connected with the operating rod, wherein the operating end head assembly comprises an end head shell detachably connected with the operating rod and a movable rod which is positioned in the end head shell and detachably connected with the end head shell, one end of the movable rod is configured to be elastically abutted against the end part of the operating rod, and the other end of the movable rod is configured to extend out of the end head shell without external force and retract into the end head shell with external force.
2. The acetabular cup installer as claimed in claim 1, wherein one of the end of the lever connected to the tip shell and the end of the tip shell connected to the lever is formed with a positioning protrusion, and the other is fitted and fixed to an outer peripheral wall of the positioning protrusion.
3. The acetabular cup installer as claimed in claim 2, wherein the lever has a positioning protrusion formed at an end thereof connected to the tip housing, and an end of the tip housing connected to the lever is fitted and fixed to an outer circumferential wall of the positioning protrusion.
4. The acetabular cup installer as claimed in claim 3, wherein the positioning protrusion defines a first radial through hole and the tip shell defines a second radial through hole, the end shell defining an end of the end shell coupled to the lever, the acetabular cup installer further comprising a fastener configured to pass through the first and second radial through holes to secure the lever to the tip shell.
5. The acetabular cup installer of claim 3 or 4, wherein the end of the lever coupled to the tip shell further comprises an anti-rotation protrusion formed on the outer peripheral wall of the positioning protrusion, and the end of the tip shell coupled to the lever is formed with an anti-rotation groove for avoiding the anti-rotation protrusion.
6. The acetabular cup installer of any of claims 1-4, wherein one of the inner peripheral wall of the tip shell and the outer peripheral wall of the movable stem has a guide slot formed thereon and the other has a guide projection formed thereon that mates with the guide slot.
7. The acetabular cup installer of claim 4, wherein the tip shell has a guide groove formed on an inner peripheral wall thereof and the movable rod has a guide projection formed on an outer peripheral wall thereof for engaging with the guide groove.
8. The acetabular cup installer of claim 7, wherein the tip housing comprises a first housing coupled to the lever and a second housing coupled coaxially to the first housing, the first housing having an outer diameter dimension that is greater than an outer diameter dimension of the second housing, the movable lever comprising a first lever segment and a second lever segment coupled coaxially to the first lever segment, the first lever segment having an outer diameter dimension that is greater than an outer diameter dimension of the second lever segment, the guide slot being formed on an inner peripheral wall of the first housing, the guide projection being formed on an outer peripheral wall of the first lever segment, the second housing having an inner diameter dimension that is the same as an outer diameter dimension of the second lever segment.
9. The acetabular cup installer of claim 8, wherein the outer peripheral wall of the first shell further comprises a bar channel formed therein.
10. The acetabular cup installer as claimed in claim 8, wherein the length of the fixture is less than or equal to the outer diameter of the tip shell and the length of the fixture is greater than the outer diameter of the positioning protrusion, the acetabular cup installer further comprising a sleeve that fits over the outer peripheral wall of the first shell of the tip shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010054787.5A CN111150481B (en) | 2020-01-17 | 2020-01-17 | Acetabular cup installer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010054787.5A CN111150481B (en) | 2020-01-17 | 2020-01-17 | Acetabular cup installer |
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| CN111150481A true CN111150481A (en) | 2020-05-15 |
| CN111150481B CN111150481B (en) | 2024-09-03 |
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| CN202010054787.5A Active CN111150481B (en) | 2020-01-17 | 2020-01-17 | Acetabular cup installer |
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| CN209091758U (en) * | 2018-10-31 | 2019-07-12 | 施乐辉外科植入物（北京）有限公司 | A kind of acetabular cup impactor |
| CN211704805U (en) * | 2020-01-17 | 2020-10-20 | 北京市春立正达医疗器械股份有限公司 | Acetabulum outer cup installer |
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| US6409732B1 (en) * | 1999-07-09 | 2002-06-25 | Othy, Inc. | Tool driver |
| CN101039638A (en) * | 2004-10-13 | 2007-09-19 | 托马斯·格拉德尔 | Instruments for setting acetabular cup |
| CN201481469U (en) * | 2009-09-17 | 2010-05-26 | 北京市春立正达科技开发有限公司 | Metal bone driver |
| CN104799921A (en) * | 2014-01-26 | 2015-07-29 | 北京纳通科技集团有限公司 | Holding driver |
| CN206443729U (en) * | 2016-08-31 | 2017-08-29 | 天津正天医疗器械有限公司 | Dismountable reamer for hip arthroplasty,acetabulum bar structure |
| CN209091758U (en) * | 2018-10-31 | 2019-07-12 | 施乐辉外科植入物（北京）有限公司 | A kind of acetabular cup impactor |
| CN211704805U (en) * | 2020-01-17 | 2020-10-20 | 北京市春立正达医疗器械股份有限公司 | Acetabulum outer cup installer |
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| CN111150481B (en) | 2024-09-03 |
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