CN104146798A - Guide rod locating device - Google Patents
Guide rod locating device Download PDFInfo
- Publication number
- CN104146798A CN104146798A CN201410443477.7A CN201410443477A CN104146798A CN 104146798 A CN104146798 A CN 104146798A CN 201410443477 A CN201410443477 A CN 201410443477A CN 104146798 A CN104146798 A CN 104146798A
- Authority
- CN
- China
- Prior art keywords
- guide post
- block
- adjustment
- keeper
- adjustment tank
- 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.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 38
- 210000000988 bone and bone Anatomy 0.000 claims description 23
- 210000000588 acetabulum Anatomy 0.000 claims description 8
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000011882 arthroplasty Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 210000001624 hip Anatomy 0.000 description 3
- 241001227561 Valgus Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 210000003692 ilium Anatomy 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 210000003689 pubic bone Anatomy 0.000 description 1
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
- A61F2/4657—Measuring instruments used for implanting artificial joints
Abstract
The invention discloses a guide rod locating device which comprises a locating mechanism and an adjusting mechanism. The locating mechanism clamps the posterior acetabular wall and comprises a locating rod. The adjusting mechanism is connected to the locating rod of the locating mechanism. A sleeve used for locating a guide rod is arranged on the adjusting mechanism. The adjusting mechanism comprises a movement adjusting structure and an angle adjusting structure, so that the position of the sleeve is adjusted. According to the guide rod locating device, the locating mechanism clamps the posterior acetabular wall, the plane position of the sleeve is adjusted through the movement adjusting structure, the angle of the sleeve is adjusted through the angle adjusting structure, the posterior acetabular wall can be rapidly and accurately clamped through the guide rod locating device, the sleeve through which the guide rod penetrate can be rapidly and accurately adjusted, and therefore efficient reliable operation of the guide rod is guaranteed.
Description
Technical field
The present invention relates to a kind of guide post positioner.
Background technology
At present, before implanting, acetabular component needs first to insert guide post.The common locate mode of this guide post is: rely on the relation between patient body position and sick bed to position, to determine top rake and valgus angle, which is a kind of subjective determination mode, although routine is applied in operating theater instruments, but locating effect is not obvious, the displacement rate causing is higher.The apparatus that uses in addition ilium and pubis to carry out three-point fix, but apparatus volume is large, complex operation.In addition, can also adopt at present preoperative planning locate mode: by the planning such as CT, Digitization Software and use 3D printing technique, the customized product of making positions, though this technology locating effect is fine, but price is very expensive, patient's economic pressures are very large, are therefore difficult to promote the use of.
Summary of the invention
For problems of the prior art, object of the present invention for provide one be connected conveniently, reliable, that operating position is adjusted is convenient, guide post positioner accurately.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of guide post positioner, comprise detent mechanism and guiding mechanism, described detent mechanism clamps posterior wall of acetabulum, comprise a positioning rod, described guiding mechanism connection is arranged on the described locating rod of described detent mechanism, on described guiding mechanism, be provided with the sleeve for locating described guide post, described guiding mechanism comprises moving-adjusting structure and angle-regulation structure, adjusts with the position to described sleeve.
Further, described detent mechanism comprises the two lower keeper being oppositely arranged and upper keepers, and described lower keeper and described upper keeper and described locating rod form wedge-shaped clamping structure jointly.
Further, between described lower keeper and described locating rod, be 89 degree angles.
Further, described lower keeper and described upper keeper are bow, and arc and the incisura ischiadica of described lower keeper match, and the arc of described upper keeper and acetabular bone inwall match.
Further, described lower keeper is connected with described locating rod away from one end of described upper keeper, and described upper keeper is connected with a positioning block away from one end of described lower keeper, and described locating piece slip cap is located on described locating rod.
Further, on described locating rod, be provided with screw thread, and by this screw thread accessory one lock nut, this lock nut leans in described locating piece upper end.
Further, described moving-adjusting structure comprises slide bar and slide block, and described slide bar one end connects described locating rod, and described slide block slip cap is connected on described slide bar.
Further, described angle-regulation structure comprises adjusting lever, the first adjustment block, the second adjustment block and contiguous block, described adjusting lever is connected with described sleeve, and can be sheathed on rotationally on described slide block, in described the first adjustment block, be provided with the first adjustment tank, and be connected with described adjusting lever, in described the second adjustment block, be provided with the second adjustment tank, and connect and be arranged on described slide block, between described the first adjustment tank and described the second adjustment tank, there is angle, described contiguous block is arranged in described the first adjustment tank and described the second adjustment tank simultaneously, and can in described the first adjustment tank and described the second adjustment tank, slide.
Further, on described contiguous block, be connected with the lifting rod of convenient operation, the through hole that is communicated with described the second adjustment tank is set in described the second adjustment block, one end that described lifting rod connects described contiguous block is arranged in described the second adjustment tank, and the other end protrudes from outside described the second adjustment block through described through hole.
Further, on the lateral surface of described the first adjustment block or described the second adjustment block, be provided with angle mark.
Beneficial effect of the present invention is, in the present invention, clamp posterior wall of acetabulum by detent mechanism, then adjust sleeve plan-position by moving-adjusting structure, adjust the angle of sleeve by angle-regulation structure, thereby can either rapidly and accurately the present invention be clamped on posterior wall of acetabulum, can fast adjust exactly the sleeve that wears guide post again, thus ensure guide post efficiently, reliably operation.
Brief description of the drawings
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Fig. 1 is guide post positioning device structure schematic diagram of the present invention;
Fig. 2 is guide post positioner angle-regulation structure duty of the present invention one schematic diagram;
Fig. 3 is guide post positioner angle-regulation structure duty of the present invention two schematic diagrams;
Fig. 4 is that guide post positioner of the present invention is connected by the structural representation of operating body;
Fig. 5 is guide post positioner using state schematic diagram of the present invention.
Detailed description of the invention
The exemplary embodiments that embodies feature & benefits of the present invention will describe in detail in the following description.Be understood that the present invention can have various variations on different embodiment, it neither departs from the scope of the present invention, and explanation wherein and accompanying drawing be when the use that explain in itself, but not in order to limit the present invention.
The occasion that guide post positioner of the present invention can be applied to fixed adjustment and guide post is installed, as shown in Figure 1, guide post positioner 1 of the present invention comprises detent mechanism 12 and guiding mechanism 14.Wherein detent mechanism 12 is for clamping acetabular bone 7 rear walls (shown in figure 4 and Fig. 5), and guiding mechanism 14 is for adjusting the position of sleeve 15 relative acetabular bones 7.Detent mechanism 12 comprises the two lower keepers that are oppositely arranged 201 and upper keeper 202, lower keeper 201 and upper keeper 202 and the common wedge-shaped clamping structure that forms of locating rod 203, so that locating rod 203 clamps acetabular bone 7 rear walls, wherein descend and between keeper 201 and locating rod 203, be 89 degree angles.In addition, this clamping structure also can be arranged on other versions on locating rod 203, and such as elastic periphery is to the mechanism etc. that reclines.Guiding mechanism 14 is rotationally connected and is arranged on detent mechanism 12, on guiding mechanism 14, be provided with the sleeve 15 for sheathed guide post 3, guiding mechanism 14 comprises moving-adjusting structure 16 and angle-regulation structure 18, adjusts with the plan-position to sleeve 15 and angle position.
Application scenario of the present invention is not limited, below in conjunction with a specific embodiment, concrete structure of the present invention and implementation procedure is described.In this embodiment, guide post 3 is the guide posts for the prosthese of acetabular bone 7.The present invention uses in the time of the location of acetabular component guide post, and detent mechanism 12 is determined according to acetabular notch angle with the clip laminating of acetabular bone 7 rear walls.Acetabular notch angle refers to the extended line from greater sciatic notch to posterior wall of acetabulum and by the angle between the straight line of acetabular bone front and rear wall, acetabular notch angle is the feature of human body invariability, can be because various diseases change, and perseverance is 89 °.
Apply the guide post 3 that guide post positioner 1 of the present invention operates acetabular component, removed the interference of artificial location from, accurate positioning is effective.Positioner is easy to use, only needs three steps can complete the location of top rake and valgus angle.Meanwhile, can need to increase forward leaning angle according to the clinical of patient, more ensure the risk of postoperative dislocation.
Concrete by an embodiment, the relative tertiary location of each structure for convenience of description, the relative position with the present invention in drawing is determined upper and lower relation.In the present embodiment, lower keeper 201 and upper keeper 202 are bow, and arc and the incisura ischiadica of lower keeper 201 match, the arc of upper keeper 202 with acetabular bone inwall to mating.Lower keeper 201 one end are connected with locating rod 203 lower ends, are generally convenient and make, and lower keeper 201 is integrally formed at the lower end of this locating rod 203.Upper keeper 202 is connected with a positioning block 204, and its type of attachment can be welding, can be to be also integrally formed.Locating piece 204 is hexahedron structure, is provided with through hole on it, is located on locating rod 203 by these through hole locating piece 204 slip caps.In locating rod 203 bar portion above, be provided with screw thread, and by this screw thread accessory one lock nut 205, this lock nut 205 leans in locating piece 204 upper surfaces, after leaning on acetabular bone 7 rear walls at lower keeper 201 and upper keeper 202 and locating rod 203 folders, make the relative position of lower keeper 201, upper keeper 202 and locating rod 203 and acetabular bone 7 constant by leaning locating piece 204, i.e. the position of lock in place bar 203.
In the present embodiment, moving-adjusting structure 14 comprises slide bar 601 and slide block 602.Slide bar 601 one end connect locating rods 203, and the concrete connected mode in the present embodiment is, is connected with turning set 603 in one end of slide bar 601, and turning set 603 can be sheathed on locating rod 203 rotationally.Slide bar 601 other ends suspend, and slide block 602 slip caps are connected on slide bar 601.For ensureing not rotate between slide bar 601 and slide block 602, between slide bar 601 and slide block 602, for non-circle coordinates, can be the structures such as square or polygon.
In the present embodiment, angle-regulation structure 18 comprises adjusting lever 801, the first adjustment block 802, the second adjustment block 803 and contiguous block 806.Wherein, one end of adjusting lever 801 is connected with sleeve 15, and type of attachment is generally welding, be sheathed on slide block 602, and slide block 602 rotates relatively the other end of adjusting lever 801.In the first adjustment block 802, be provided with the first adjustment tank 804, and lower end is connected with adjusting lever 801, the mode that its connected mode can adopt key to connect or non-circle coordinates.In the second adjustment block 803, be provided with the second adjustment tank 805, and be fixedly installed on slide block 602, between the first adjustment tank 804 and the second adjustment tank 805, there is angle, non-parallel setting.Contiguous block 806 is arranged in the first adjustment tank 804 and the second adjustment tank 805 simultaneously, and can in the first adjustment tank 804 and the second adjustment tank 805, slide.
In the present embodiment, on contiguous block 806, be connected with the lifting rod 807 of convenient operation.The setting of this lifting rod 807 is as shown in Figures 2 and 3: the through hole that is communicated with the second adjustment tank 805 is set in the second adjustment block 803, through hole direction is parallel with the second adjustment tank 805 Axis Extension directions, one end that lifting rod 807 is connected with contiguous block 806 is arranged in the second adjustment tank 805, the other end protrudes from the second adjustment block 803 upper ends through through hole, between lifting rod 807 and through hole, there is gap, so that move therein.In addition, on the lateral surface of the second adjustment block 803, be provided with angle mark 808, contiguous block 806 stretches out the second adjustment tank 805 parts an arrow mark, by pulling up and down lifting rod 807, arrow mark is the different angles of orientation angle mark 808 respectively, determine top rake.In the present embodiment, angular marking is arranged in the second adjustment block 803, in fact also can be arranged in the first adjustment block 802.
In actual mechanical process, first related lower keeper 201 locating rod 203 is inserted along human body acetabular bone 7 rear walls, lower keeper 201 is fastened to greater sciatic notch, and now, locating rod 203 place axis and lower keeper 201 are roughly 89 degree angles with the tangent line of greater sciatic notch contact point.Locating piece 204 is sheathed on locating rod 203 together with upper keeper 202, and depress as shown in Figure 4 keeper 202, make keeper 202 fasten acetabular bone 7 inwalls, again by the effect of lock nut 205 downward pressures, by above-mentioned locking position, and the anatomical axis line parallel of acetabular bone thereby make location structure 12 be fixed on acetabular bone 7 rear walls, now locating rod 203 axis.Then slide bar 601 covers are connected on locating rod 203, and slide block 602 slip caps that install angle-regulation structure 18 are located on slide bar 601, change the position of guiding mechanism 14 relative localization mechanisms 12 by rotation turning set 603, then adjust the plan-position of angle-regulation structure 18 by slide block 602 and the variation of slide bar 601 accessory positions, until the intersection point of slide bar 601 and adjusting lever 801 is positioned at the center of human body acetabular bone.Finally adjust top rake by angle-regulation structure 14, when lifting rod 807 is in position as shown in Figure 2, the axis of sleeve 15 is parallel with locating rod 203 axis, with the anatomical axis line parallel of acetabular bone.In the time that prosthese is installed, sometimes for the prosthese that makes to install is more stable, doctor need to adjust the angle of top rake, at this moment operate lifting rod 807, pull contiguous block 806 to change the relative position between the first adjustment block 802 and the second adjustment block 803, the angle of adjusting can be found out in the angle mark 805 the second adjustment block 803, as shown in Figures 2 and 3, owing to thering is angle between the first adjustment tank 804 and the second adjustment tank 805, while pulling lifting rod 807, will drive first adjustment block 802 at the first adjustment tank 804 places to be offset, the first adjustment block 802 lower ends are fixedly connected on adjusting lever 801, thereby the angle of adjusting lever 801 is finely tuned, adjusting lever 801 is with moving sleeve 15 occurrence positions adjustment, after top rake after to be adjusted is determined, guide post 3 is passed to sleeve 15, and its head is inserted in acetabular bone 7, thereby complete the positioning action of guide post 3 on acetabular bone 7.
In the time that guide post 3 is positioned on acetabular bone 7, doctor can be with reference to the direction of guide post 3, use reamer for hip arthroplasty,acetabulum to carry out acetabular bone processing and setting acetabular prosthese, in order better to locate more accurately the direction of reamer for hip arthroplasty,acetabulum or the direction of setting acetabular prosthese, can on guide post 3, parallel device be set, make to locate the instrument of reamer for hip arthroplasty,acetabulum and setting acetabular prosthese and the direction keeping parallelism of guide post 3.
Beneficial effect of the present invention is, in the present invention, clamp acetabular bone 7 rear walls by lower keeper 201 and upper keeper 202, determine the axial of locating rod 203 by the angle design of lower keeper 201 and locating rod 203, then adjust sleeve 15 plan-positions by moving-adjusting structure 16, adjust the angle of sleeve 15 by angle-regulation structure 18, can fast adjust exactly the sleeve 15 that wears guide post 3, thereby ensure guide post 3 efficiently, location reliably, for follow-up acetabular bone is processed and setting acetabular prosthese provides accurate guiding.
Technical scheme of the present invention is disclosed as above by preferred embodiment.Those skilled in the art should recognize change and the retouching the scope and spirit of the present invention that the appended claim of the present invention discloses, done in the case of not departing from, within all belonging to the protection domain of claim of the present invention.
Claims (10)
1. a guide post positioner, it is characterized in that, comprise detent mechanism and guiding mechanism, described detent mechanism clamps posterior wall of acetabulum, comprise a positioning rod, described guiding mechanism connection is arranged on the described locating rod of described detent mechanism, is provided with the sleeve for locating described guide post on described guiding mechanism, described guiding mechanism comprises moving-adjusting structure and angle-regulation structure, adjusts with the position to described sleeve.
2. guide post positioner as claimed in claim 1, is characterized in that, described detent mechanism comprises the two lower keeper being oppositely arranged and upper keepers, and described lower keeper and described upper keeper and described locating rod form wedge-shaped clamping structure jointly.
3. guide post positioner as claimed in claim 2, is characterized in that, is 89 degree angles between described lower keeper and described locating rod.
4. guide post positioner as claimed in claim 2, is characterized in that, described lower keeper and described upper keeper are bow, and arc and the incisura ischiadica of described lower keeper match, and the arc of described upper keeper and acetabular bone inwall match.
5. guide post positioner as claimed in claim 2, it is characterized in that, described lower keeper is connected with described locating rod away from one end of described upper keeper, and described upper keeper is connected with a positioning block away from one end of described lower keeper, and described locating piece slip cap is located on described locating rod.
6. guide post positioner as claimed in claim 5, is characterized in that, on described locating rod, is provided with screw thread, and by this screw thread accessory one lock nut, this lock nut leans in described locating piece upper end.
7. guide post positioner as claimed in claim 1, is characterized in that, described moving-adjusting structure comprises slide bar and slide block, and described slide bar one end connects described locating rod, and described slide block slip cap is connected on described slide bar.
8. guide post positioner as claimed in claim 7, it is characterized in that, described angle-regulation structure comprises adjusting lever, the first adjustment block, the second adjustment block and contiguous block, described adjusting lever is connected with described sleeve, and can be sheathed on rotationally on described slide block, in described the first adjustment block, be provided with the first adjustment tank, and be connected with described adjusting lever, in described the second adjustment block, be provided with the second adjustment tank, and connect and be arranged on described slide block, between described the first adjustment tank and described the second adjustment tank, there is angle, described contiguous block is arranged in described the first adjustment tank and described the second adjustment tank simultaneously, and can in described the first adjustment tank and described the second adjustment tank, slide.
9. guide post positioner as claimed in claim 8, it is characterized in that, on described contiguous block, be connected with the lifting rod of convenient operation, the through hole that is communicated with described the second adjustment tank is set in described the second adjustment block, one end that described lifting rod connects described contiguous block is arranged in described the second adjustment tank, and the other end protrudes from outside described the second adjustment block through described through hole.
10. guide post positioner as claimed in claim 8, is characterized in that, is provided with angle mark on the lateral surface of described the first adjustment block or described the second adjustment block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410443477.7A CN104146798B (en) | 2014-09-02 | 2014-09-02 | A kind of tail rod locating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410443477.7A CN104146798B (en) | 2014-09-02 | 2014-09-02 | A kind of tail rod locating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104146798A true CN104146798A (en) | 2014-11-19 |
| CN104146798B CN104146798B (en) | 2016-06-01 |
Family
ID=51872575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410443477.7A Active CN104146798B (en) | 2014-09-02 | 2014-09-02 | A kind of tail rod locating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104146798B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108078618A (en) * | 2018-02-12 | 2018-05-29 | 中国医学科学院整形外科医院 | Pelvic traction approximator |
| CN112972074A (en) * | 2021-02-03 | 2021-06-18 | 北京市春立正达医疗器械股份有限公司 | Acetabulum center locator |
| CN113456254A (en) * | 2021-08-05 | 2021-10-01 | 电子科技大学 | Hip socket anteversion angle and abduction angle measuring system and method in hip joint replacement |
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| JP5123335B2 (en) * | 2010-01-28 | 2013-01-23 | 本田技研工業株式会社 | Crankshaft and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108078618A (en) * | 2018-02-12 | 2018-05-29 | 中国医学科学院整形外科医院 | Pelvic traction approximator |
| CN112972074A (en) * | 2021-02-03 | 2021-06-18 | 北京市春立正达医疗器械股份有限公司 | Acetabulum center locator |
| CN113456254A (en) * | 2021-08-05 | 2021-10-01 | 电子科技大学 | Hip socket anteversion angle and abduction angle measuring system and method in hip joint replacement |
| CN113456254B (en) * | 2021-08-05 | 2022-06-21 | 电子科技大学 | Hip socket anteversion angle and abduction angle measuring system and method in hip joint replacement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104146798B (en) | 2016-06-01 |
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Inventor after: Li Wenzhao Inventor after: Xu Shufu Inventor after: Xu Kai Inventor after: Wang Junling Inventor before: Li Wenzhao Inventor before: Xu Kai Inventor before: Wang Junling |
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Effective date of registration: 20240410 Address after: G356, 3rd floor, building 1, yard 9, CHENGWAN street, Haidian District, Beijing 100094 Patentee after: Beijing natong Medical Technology Holding Co.,Ltd. Country or region after: China Address before: 100082 room 8-2-1201, ocean view area 15, Desheng West Street, Haidian District, Beijing. Patentee before: BEIJING NATON TECHNOLOGY GROUP Co.,Ltd. Country or region before: China |