CN202821728U - Unicondylar knee arthroplasty femur non-intramedullary locator - Google Patents
Unicondylar knee arthroplasty femur non-intramedullary locator Download PDFInfo
- Publication number
- CN202821728U CN202821728U CN 201220556861 CN201220556861U CN202821728U CN 202821728 U CN202821728 U CN 202821728U CN 201220556861 CN201220556861 CN 201220556861 CN 201220556861 U CN201220556861 U CN 201220556861U CN 202821728 U CN202821728 U CN 202821728U
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- CN
- China
- Prior art keywords
- femur
- localizer
- marrow
- connecting piece
- locating
- 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.)
- Expired - Fee Related
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- 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
- A61F2/461—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 knees
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- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
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- Prostheses (AREA)
Abstract
The utility model relates to a unicondylar knee arthroplasty femur non-intramedullary locator which comprises a vertical operating bar, a connecting piece and a guiding and locating bar. The vertical operating bar is arranged on the top of the connecting piece. The guiding and locating bar is transversely arranged on the bottom of the connecting piece. A first guiding hole, a second guiding hole and a third guiding hole are respectively formed in the upper portion of the vertical operating bar, the upper portion of the connecting piece and the lower portion of the connecting piece along the length direction of the guiding and locating bar. Preferably, the width of the upper portion of the connecting piece is smaller than the width of the lower portion of the connecting piece and smaller than the width of the vertical operating bar. An inner casing tube is detachably arranged in the second guiding hole. A guiding needle is movably arranged in the inner casing tube in an inserted mode. The unicondylar knee arthroplasty femur non-intramedullary locator is ingenious in design and simple and clean in structure, shortcomings of an intramedullary locating method can be overcome, the situation that locating is not accurate due to the fact that ectropion on patella is difficult is mainly avoided, a minimally invasive degree is furthest achieved, positioning deviation due to experience of operators is eliminated, and the unicondylar knee arthroplasty femur non-intramedullary locator is easy to operate, accurate in locating, capable of being widely used in nicondylar knee arthroplasty femur prosthesis locating, and suitable for being popularized and applied on a large scale.
Description
Technical field
This utility model relates to the localizer technical field, and particularly single condyle displacement femur localizer technical field specifically refers to the non-marrow localizer of a kind of single condyle displacement femur.
Background technology
The knee joint single condyle displacement is to change the knee joint inside part into metal prostheses, and complete single condyle prosthese comprises 2 nugget genus and middle white object.Because the visual field is less in the art, so need to locate indication line of force direction when having a holiday or vacation body, namely where when putting femoral prosthesis, need to guide with to prosthese is put in.
At present for knee joint single condyle replacement (unicondylar knee arthroplasty, UKA), when carrying out the displacement of femur side prosthesis, all adopt positioning mode in the marrow, usually way is at the distal femur opening, a guide-localization bar 1 inserts pulp cavity by the entry point of recommending and leads, this root guide-localization bar 1 must be parallel with femur median line (term is anatomical axis), and this guide-localization bar 1 trend is femur anatomical axis, and then the indication femoral prosthesis is placed.As depicted in figs. 1 and 2, the femur localizer that uses at present comprises vertical action bars 2, the 7 degree wing 3, contiguous block 4 and guide-localization bars 1, the 7 degree wings 3 are installed on the top of contiguous block 4, vertical action bars 2 is installed on the top of the 7 degree wings 3, guide-localization bar 1 laterally is installed in the bottom of contiguous block 4, and the bottom of the top of vertical action bars 2, the 7 degree wings 3 and contiguous block 4 is respectively arranged with the first pilot hole 5, the second pilot hole 6 and the 3rd pilot hole 7 along the length direction of guide-localization bar 1.Mainly there is following problem in it:
1. it is inaccurate itself to lead.
2. Minimally Invasive Surgery operation often makes the patella difficulty of turning up, and affect the insertion of the interior guide-localization bar 1 of marrow.
3. opening pulp cavity increases the amount of bleeding of postoperative in the art.
4. because the reasons such as wound cause the distal femur deformity guide-localization bar 1 insertion difficulty or guiding are forbidden.
Also do not adopt at present non-medullary cavity positioner to position.Therefore, need to provide a kind of single condyle displacement femur non-marrow localizer, to avoid positioning mode shortcoming in the marrow, mainly avoid because of the patella location that difficulty causes of turning up inaccurate, at utmost realize Wicresoft, get rid of the deviations that causes because of patient's experience problem, simple to operate, accurate positioning can be widely used in single condyle displacement femoral prosthesis location.
The utility model content
The purpose of this utility model is to have overcome above-mentioned shortcoming of the prior art, provide a kind of single condyle displacement femur non-marrow localizer, the non-marrow positioner designs of this list condyle displacement femur is ingenious, simple for structure, can avoid positioning mode shortcoming in the marrow, mainly avoid because of the patella location that difficulty causes of turning up inaccurate, at utmost realize Wicresoft, the deviations that eliminating causes because of patient's experience problem, simple to operate, accurate positioning can be widely used in single condyle displacement femoral prosthesis location, is suitable for large-scale promotion application.
To achieve these goals, the non-marrow localizer of single condyle displacement femur of the present utility model, be characterized in, comprise vertical action bars, connector and guide-localization bar, described vertical action bars is installed on the top of described connector, described guide-localization bar laterally is installed in the bottom of described connector, and the bottom of the top of described vertical action bars, the top of described connector and described connector is respectively arranged with the first pilot hole, the second pilot hole and the 3rd pilot hole along the length direction of described guide-localization bar.
Preferably, described connector is bending member, and described vertical action bars connects described guide-localization bar by described bending member.
More preferably, described bending member comprises transverse arm and perpendicular arm, and an end of described transverse arm connects the upper end of described perpendicular arm, and described vertical action bars is installed on the other end of described transverse arm, and described guide-localization bar is installed in the lower end of described perpendicular arm.
Preferably, the width on the top of described connector is less than the width of the bottom of described connector.
Preferably, the width on the top of described connector is less than the width of described vertical action bars.
Preferably, the non-marrow localizer of described single condyle displacement femur also comprises guide pin and inner sleeve, and described inner sleeve detachably is arranged in described the second pilot hole, and described guide pin movable insertion is located in the described inner sleeve.
Preferably, described guide-localization bar is that flat and front end are recessed.
The beneficial effects of the utility model specifically are:
1, the non-marrow localizer of single condyle displacement femur of the present utility model comprises vertical action bars, connector and guide-localization bar, described vertical action bars is installed on the top of described connector, described guide-localization bar laterally is installed in the bottom of described connector, the top of described vertical action bars, the top of described connector and the bottom of described connector are respectively arranged with the first pilot hole along the length direction of described guide-localization bar, the second pilot hole and the 3rd pilot hole, design ingenious, simple for structure, can avoid positioning mode shortcoming in the marrow, mainly avoid because of the patella location that difficulty causes of turning up inaccurate, at utmost realize Wicresoft, the deviations that eliminating causes because of patient's experience problem, simple to operate, accurate positioning can be widely used in single condyle displacement femoral prosthesis location, is suitable for large-scale promotion application.
2, the non-marrow localizer of single condyle displacement femur of the present utility model also comprises guide pin and inner sleeve, and described inner sleeve detachably is arranged in described the second pilot hole, and described guide pin movable insertion is located in the described inner sleeve, design ingenious, simple for structure, locate simple and conveniently, be suitable for large-scale promotion application.
Description of drawings
Fig. 1 is the schematic rear view of existing femur localizer.
Fig. 2 is the schematic side view of femur localizer shown in Figure 1.
Fig. 3 is the schematic rear view of a specific embodiment of the present utility model.
Fig. 4 is the schematic side view of specific embodiment shown in Figure 3.
The specific embodiment
In order more clearly to understand technology contents of the present utility model, describe in detail especially exemplified by following examples.Wherein identical parts adopt identical Reference numeral.
See also Fig. 3 and shown in Figure 4, the non-marrow localizer of single condyle displacement femur of the present utility model comprises vertical action bars 2, connector 8 and guide-localization bar 1, described vertical action bars 2 is installed on the top of described connector 8, described guide-localization bar 1 laterally is installed in the bottom of described connector 8, and the top of the top of described vertical action bars 2, described connector 8 and the bottom of described connector 8 are respectively arranged with the first pilot hole 5, the second pilot hole 6 and the 3rd pilot hole 7 along the length direction of described guide-localization bar 1.
Described connector 8 can be any suitable parts, sees also Fig. 3 and shown in Figure 4, and in specific embodiment of the utility model, described connector 8 is bending member, and described vertical action bars 2 connects described guide-localization bar 1 by described bending member.
Described bending member can have any suitable shape, see also Fig. 3 and shown in Figure 4, in specific embodiment of the utility model, described bending member comprises transverse arm and perpendicular arm, one end of described transverse arm connects the upper end of described perpendicular arm, described vertical action bars 2 is installed on the other end of described transverse arm, and described guide-localization bar 1 is installed in the lower end of described perpendicular arm.
In order to prevent being stopped by patella, see also Fig. 3 and shown in Figure 4, in specific embodiment of the utility model, the width on the top of described connector 8 is less than the width of the bottom of described connector 8.
In order to prevent being stopped by patella, see also Fig. 3 and shown in Figure 4, in specific embodiment of the utility model, the width on the top of described connector 8 is less than the width of described vertical action bars 2.When described vertical action bars 2 was round bar, the width on the top of described connector 8 was less than the diameter of described vertical action bars 2.
Simple and convenient in order to locate, in specific embodiment of the utility model, the non-marrow localizer of described single condyle displacement femur also comprises guide pin (not shown) and inner sleeve (not shown), described inner sleeve detachably is arranged in described the second pilot hole 6, and described guide pin movable insertion is located in the described inner sleeve.
Former femur localizer has 3 pilot holes, i.e. the first pilot hole 5, the second pilot hole 6 and the 3rd pilot hole 7, stay in the continuation of insurance of this utility model relaying, the first pilot hole 5 of the top is used for roughly deciding direction, middle hole i.e. the second pilot hole 6 and namely the 3rd pilot hole 7 is for squeezing into rotary head the hole of below, and former femur localizer to be relied on 7 and spend the wings 3 and locate, so rotary head is squeezed in two holes, useful in other operation technique, do not describe in detail herein.And this localizer is mainly by i.e. the second pilot hole 6 location, middle hole, and is thick and screw thread is arranged because of rotary head, squeezes into rear replacing direction to be difficult to, so adopt thinner guide pin (for example diameter 1.5mm) location in this utility model.Namely adding a dismountable for example internal diameter in the second pilot hole 6 in the hole of centre is 1.5mm, external diameter and the second pilot hole 6 equirotal inner sleeves.
The shape of described guide-localization bar 1 can determine as required that in specific embodiment of the utility model, described guide-localization bar 1 is that flat and front end are recessed.
During use, in the implantation of the auxiliary lower directly indication of C arm X-ray machine femur side prosthesis, different from positioning mode essence in the marrow in the past.The normal problem that occurs was that patella stops during the femur localizer that uses at present used, and the femur localizer can't correctly be put into.This utility model is not stopped 3 cancellations of the degree of 7 in the former femur localizer wing so that this utility model inserts by patella.The 7 degree wings 3 play an important role in original femur localizer, and when the 7 degree wings 3 were parallel with the pulp cavity anatomical axis, implanted direction along the locating hole direction for the prosthese that needs this moment.And be non-pulp cavity location in the new the fixed position of the design principle of this utility model, need not the 7 degree wings, 3 direction indications, therefore remove the 7 degree wings 3 and can avoid stopping with patella.
To sum up, the non-marrow positioner designs of single condyle displacement femur of the present utility model is ingenious, simple for structure, can avoid positioning mode shortcoming in the marrow, mainly avoid because of the patella location that difficulty causes of turning up inaccurate, at utmost realize Wicresoft, the deviations that eliminating causes because of patient's experience problem, simple to operate, accurate positioning, can be widely used in single condyle displacement femoral prosthesis location, be suitable for large-scale promotion application.
In this description, this utility model is described with reference to its specific embodiment.But, still can make various modifications and conversion obviously and not deviate from spirit and scope of the present utility model.Therefore, description and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (7)
1. a single condyle is replaced the non-marrow localizer of femur, it is characterized in that, comprise vertical action bars, connector and guide-localization bar, described vertical action bars is installed on the top of described connector, described guide-localization bar laterally is installed in the bottom of described connector, and the bottom of the top of described vertical action bars, the top of described connector and described connector is respectively arranged with the first pilot hole, the second pilot hole and the 3rd pilot hole along the length direction of described guide-localization bar.
2. the non-marrow localizer of single condyle displacement femur according to claim 1 is characterized in that described connector is bending member, and described vertical action bars connects described guide-localization bar by described bending member.
3. single condyle according to claim 2 is replaced the non-marrow localizer of femur, it is characterized in that, described bending member comprises transverse arm and perpendicular arm, one end of described transverse arm connects the upper end of described perpendicular arm, described vertical action bars is installed on the other end of described transverse arm, and described guide-localization bar is installed in the lower end of described perpendicular arm.
4. the non-marrow localizer of single condyle displacement femur according to claim 1 is characterized in that the width on the top of described connector is less than the width of the bottom of described connector.
5. the non-marrow localizer of single condyle displacement femur according to claim 1 is characterized in that the width on the top of described connector is less than the width of described vertical action bars.
6. single condyle according to claim 1 is replaced the non-marrow localizer of femur, it is characterized in that, the non-marrow localizer of described single condyle displacement femur also comprises guide pin and inner sleeve, and described inner sleeve detachably is arranged in described the second pilot hole, and described guide pin movable insertion is located in the described inner sleeve.
7. the non-marrow localizer of single condyle displacement femur according to claim 1 is characterized in that described guide-localization bar is that flat and front end are recessed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220556861 CN202821728U (en) | 2012-10-26 | 2012-10-26 | Unicondylar knee arthroplasty femur non-intramedullary locator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220556861 CN202821728U (en) | 2012-10-26 | 2012-10-26 | Unicondylar knee arthroplasty femur non-intramedullary locator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202821728U true CN202821728U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220556861 Expired - Fee Related CN202821728U (en) | 2012-10-26 | 2012-10-26 | Unicondylar knee arthroplasty femur non-intramedullary locator |
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| Country | Link |
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| CN (1) | CN202821728U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103976808A (en) * | 2014-05-28 | 2014-08-13 | 上海市杨浦区中心医院 | Unicondylar arthroplasty femoral prosthesis implantation indicator |
-
2012
- 2012-10-26 CN CN 201220556861 patent/CN202821728U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103976808A (en) * | 2014-05-28 | 2014-08-13 | 上海市杨浦区中心医院 | Unicondylar arthroplasty femoral prosthesis implantation indicator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20161026 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |