CN201022710Y - Pelvis three-dimension sight - Google Patents
Pelvis three-dimension sight Download PDFInfo
- Publication number
- CN201022710Y CN201022710Y CNU2007201078244U CN200720107824U CN201022710Y CN 201022710 Y CN201022710 Y CN 201022710Y CN U2007201078244 U CNU2007201078244 U CN U2007201078244U CN 200720107824 U CN200720107824 U CN 200720107824U CN 201022710 Y CN201022710 Y CN 201022710Y
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- CN
- China
- Prior art keywords
- pelvis
- scale bar
- aiming device
- fixed pin
- locating piece
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Abstract
The utility model discloses a pelvis three-dimensional aiming device pertaining to technical field of medical surgical instrument, which is characterized in that the two inner ends of an X-direction calibration bar and a Y-direction calibration bar are shaft-movably coordinated through a P-fixed pin, while two outer ends thereof are respectively connected with a X-fixed pin and a Y-fixed pin; the front end of a benchmark screw is coordinately connected with the top end of the P-fixed pin; the front part of the benchmark screw is sleeve connected with a parallel sleeve which is coordinately connected with a drill sleeve, whereas the back part of the benchmark screw is sleeve connected with a front support block and a back support block; the X-direction and the Y-direction calibration bars are respectively sleeve provided with the X-fixed pin and the Y-fixed pin; and the front and the back support blocks are coordinately connected with the X-fixed pin and the Y-fixed pin via a front connecting bar and a back connecting bar, respectively. The pelvis three-dimensional aiming device has the advantages of simple and rational structure, without bringing any other physical instrument, and high measurement accuracy, which not only performs a virtual cutting operation without damage the model but also can be used repeatedly in numerous times through the three-dimensional model rebuilt by computer program, therefore measuring convenient and accurate.
Description
Technical field
This utility model belongs to technical field of medical instruments, is specially a kind of pelvis three-dimensional aiming device.
Background technology
Fracture of acetabulum is very big by the reduction by traction difficulty because of fracture of acetabulum in serious, the hemorrhage many so prior art of its wound, the topography complexity, the fracture of acetabulum displacement surpasses 2mm person, should adopt operative treatment, operation can recover the anatomical structure of acetabular bone to greatest extent, and the fracture multiselect of front and back post is fixed with the reconstruction plate screw usually, reconstruction plate is fixing strong, the early functional exercise in favourable joint, but its surgical exposure is more extensive, and wound is bigger.
Existing in recent years scholar is when emphasizing operative approach, advocate to use the hollow lag screw in adjoining the body surface symbol place in the art as far as possible, fixing through ilium or ischial tuberosity extension, this technology can reduce operation wound to appropriate cases, and can reach good therapeutic outcome.But post screw operation easier is bigger before and after the acetabular bone, and all need operation under the CT guiding, operation is complicated, if lack correct advance to follow closely position and angle, screw then may occurring, to enter various complication such as acetabular bone, pelvic cavity, sciatic nerve injury or screw too short and can't reach effective fixation.Advance to follow closely position and angle generally by the method for manual specimen anatomic measurement in kind, its many-sided defective and error: (1) general physical measuring instrument precision is not high, and hand dipping is introduced personal error easily; (2) need carry out the physics cutting operation, damage model, each specimen can only be surveyed once, can introduce error simultaneously; (3) can't dynamically adjust the position: (4) need be at the manual subsidiary line of drawing of mold surface, the sclerotin unevenness, and slotted line is introduced error easily not in same plane; (5) stopped or passed inner object and be not easy measurement etc.
The utility model content
The purpose of this utility model is to overcome the above-mentioned problems in the prior art, and design provides a kind of technical scheme of pelvis three-dimensional aiming device.
Described pelvis three-dimensional aiming device, its feature at X to the scale bar, Y to scale bar two the inners by P locating pin axle movingly, connect respectively on two outer ends X locating pin is set, the Y locating pin, benchmark screw front end and P locating pin top are connected, the anterior socket of benchmark screw is provided with parallel sleeve, parallel sleeve is connected cooperation with drill bushing, the rear portion socket of benchmark screw is provided with preceding back-up block, back back-up block, X is to the scale bar, Y on the scale bar respectively socket the X locating piece is set, the Y locating piece, preceding back-up block, back back-up block passes through front rod respectively, rear connecting rod and X locating piece, the Y locating piece is connected.
Described pelvis three-dimensional aiming device is characterized in that X locating pin, Y locating pin fixedly connected to the scale bar to scale bar, Y with X.
Described pelvis three-dimensional aiming device, it is characterized in that X locating pin, Y locating pin and X to scale bar, Y to the sliding connection of scale bar.
Described pelvis three-dimensional aiming device is characterized in that before and after the parallel sleeve fastening nut being set respectively.
Described pelvis three-dimensional aiming device is characterized in that parallel sleeve is connected cooperation with drill bushing by adjustment screw, and corresponding drill bushing top is provided with guiding groove hole.
Described pelvis three-dimensional aiming device is characterized in that on X locating piece, the Y locating piece dog screw being set respectively.
Described pelvis three-dimensional aiming device is characterized in that being equipped with locking nut to scale bar, Y to scale bar axle P locating pin upper end movingly with X.
Described pelvis three-dimensional aiming device is characterized in that front rod, rear connecting rod one end cooperate with preceding back-up block, back back-up block riveted joint respectively, the other end respectively with the X locating piece, the Y locating piece is hinged cooperates.
Above-mentioned pelvis three-dimensional aiming device, simple and reasonable, the relevant parameter of determining in conjunction with computer reconstruction pelvis threedimensional model according to CT scan, use this pelvis three-dimensional aiming device to need not to introduce any physical apparatus, and setting accuracy height, need not to make by hand specimen model in kind, not only internal fixation is reliable for effect for it, can prevent effectively that the front pillar slit-like displacement that causes behind acetabular bone T type fracture and the transverse fracture rear pillar steel plate internal fixation from increasing, and add rear pillar steel plate internal fixation with the front pillar steel plate and compare, advantages such as it is little to have operation wound, and the time is short, and amount of bleeding is few.
Description of drawings
Fig. 1 is this utility model structural representation;
Fig. 2 is the right TV structure sketch map of this utility model;
Fig. 3 is this utility model left side TV structure sketch map.
The specific embodiment
As shown in the figure, X is inner by 6 of P locating pins movingly to scale bar 2a two to scale bar 2, Y, P locating pin 6 upper ends are equipped with locking nut 5, connect respectively on two outer ends X locating pin 1, Y locating pin 8 are set, X locating pin 1, Y locating pin 8 are fixedlyed connected to scale bar 2a to scale bar 2, Y with X, also can be slidingly matched to scale bar 2a to scale bar 2, Y by slide block and the X that the upper end is provided with.X to scale bar 2, Y on scale bar 2a respectively socket X locating piece 4, Y locating piece 4a are set, on described X locating piece 4, the Y locating piece 4a dog screw 3,3a are set respectively, dog screw 3,3a be used for fixing X locating piece 4, Y locating piece 4a at X to scale bar 2, the position of Y on scale bar 2a.Benchmark screw 12 front ends are connected by rivet 7 with P locating pin 6 tops or touch, the 12 anterior sockets of benchmark screw are provided with parallel sleeve 14, parallel sleeve 14 front and back are provided with fastening nut 13a, 13 respectively, fastening nut is used for parallel sleeve 14 is fixed, parallel sleeve 14 is connected cooperation by adjustment screw 16 with drill bushing 15, corresponding drill bushing 15 tops are provided with guiding groove hole 17, regulate the relative position of parallel sleeve 14 and drill bushing 15 by adjustment screw 16, guiding groove hole 17.The preceding back-up block 11a of benchmark screw 12 rear portion socket settings, back back-up block 11 are connected by front rod 9a, rear connecting rod 9 respectively with X locating piece 4, Y locating piece 4a, front rod 9a, rear connecting rod 9 one ends are riveted by rivet 10a, 10 with preceding back-up block 11a, back back-up block 11 respectively and are cooperated, the other end respectively with X locating piece 4, the hinged cooperation of Y locating piece 4a.
In conjunction with computer reconstruction pelvis threedimensional model, determine relevant parameter according to CT scan.P locating pin 6, X locating pin 1, Y locating pin 8 due to bone surface, regulated the position of X locating piece 4, Y locating piece 4a according to corresponding position and angle parameter, and screwed in place screw 3,3a determine the position of benchmark screw 12.In drill bushing 15, insert lag screw 18, by regulating the position between parallel sleeve 14 and parallel sleeve 14 and the drill bushing 15, the needle point of lag screw 18 is overlapped substantially with the needle point of P locating pin 6, fastening nut 13,13a and adjustment screw 16, because it is parallel that lag screw 18 and benchmark screw 12 remain, lag screw 18 positions are the position of requirements of operation at this moment.
Claims (8)
1. pelvis three-dimensional aiming device, its feature at X to scale bar (2), Y to scale bar (2a) two the inners by P locating pin (6) axle movingly, connect respectively on two outer ends X locating pin (1) is set, Y locating pin (8), benchmark screw (12) front end and P locating pin (6) top are connected, the anterior socket of benchmark screw (12) is provided with parallel sleeve (14), parallel sleeve (14) is connected cooperation with drill bushing (15), benchmark screw (12) rear portion socket is provided with preceding back-up block (11a), back back-up block (11), X is to scale bar (2), Y on scale bar (2a) respectively socket X locating piece (4) is set, Y locating piece (4a), preceding back-up block (11a), back back-up block (11) is respectively by front rod (9a), rear connecting rod (9) and X locating piece (4), Y locating piece (4a) is connected.
2. pelvis three-dimensional aiming device as claimed in claim 1 is characterized in that X locating pin (1), Y locating pin (8) fixedly connected to scale bar (2a) to scale bar (2), Y with X.
3. pelvis three-dimensional aiming device as claimed in claim 1, it is characterized in that X locating pin (1), Y locating pin (8) with X to scale bar (2), Y to scale bar (2a) sliding connection.
4. pelvis three-dimensional aiming device as claimed in claim 1 is characterized in that before and after the parallel sleeve (14) fastening nut (13a, 13) being set respectively.
5. pelvis three-dimensional aiming device as claimed in claim 1 is characterized in that parallel sleeve (14) is connected cooperation with drill bushing (15) by adjustment screw (16), and corresponding drill bushing (15) top is provided with guiding groove hole (18).
6. pelvis three-dimensional aiming device as claimed in claim 1 is characterized in that being provided with respectively on X locating piece (4), the Y locating piece (4a) dog screw (3,3a).
7. pelvis three-dimensional aiming device as claimed in claim 1 is characterized in that being equipped with locking nut (5) to scale bar (2), Y to scale bar (2a) axle P locating pin (6) upper end movingly with X.
8. pelvis three-dimensional aiming device as claimed in claim 1, it is characterized in that front rod (9a), rear connecting rod (9) one ends respectively with preceding back-up block (11a), the back back-up block (11) riveted joint cooperate, the other end respectively with X locating piece (4), the hinged cooperation of Y locating piece (4a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201078244U CN201022710Y (en) | 2007-03-30 | 2007-03-30 | Pelvis three-dimension sight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201078244U CN201022710Y (en) | 2007-03-30 | 2007-03-30 | Pelvis three-dimension sight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201022710Y true CN201022710Y (en) | 2008-02-20 |
Family
ID=39096567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201078244U Expired - Fee Related CN201022710Y (en) | 2007-03-30 | 2007-03-30 | Pelvis three-dimension sight |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201022710Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162625A (en) * | 2013-03-01 | 2013-06-19 | 哈尔滨工业大学 | Ultra-precision three-dimensional collimation and measurement sensor based on differential astigmatism defocus detection |
| CN103979178A (en) * | 2014-04-22 | 2014-08-13 | 珠海格力电器股份有限公司 | Trademark compaction device |
-
2007
- 2007-03-30 CN CNU2007201078244U patent/CN201022710Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162625A (en) * | 2013-03-01 | 2013-06-19 | 哈尔滨工业大学 | Ultra-precision three-dimensional collimation and measurement sensor based on differential astigmatism defocus detection |
| CN103162625B (en) * | 2013-03-01 | 2015-07-29 | 哈尔滨工业大学 | Based on ultraprecise three-dimensional aiming and the survey sensor of differential astigmatism position from defocus |
| CN103979178A (en) * | 2014-04-22 | 2014-08-13 | 珠海格力电器股份有限公司 | Trademark compaction device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080220 Termination date: 20130330 |