CN2873124Y - Far end sighting device positioning rod improvement with lock intramedullary nail - Google Patents
Far end sighting device positioning rod improvement with lock intramedullary nail Download PDFInfo
- Publication number
- CN2873124Y CN2873124Y CN 200620006918 CN200620006918U CN2873124Y CN 2873124 Y CN2873124 Y CN 2873124Y CN 200620006918 CN200620006918 CN 200620006918 CN 200620006918 U CN200620006918 U CN 200620006918U CN 2873124 Y CN2873124 Y CN 2873124Y
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- CN
- China
- Prior art keywords
- intramedullary nail
- lock
- nail
- locating pin
- time
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- 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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Abstract
The invention relates to a medical apparatus, which is an improvement of locating pin of intramedullary nail remote aimer with lock using in orthopaedic operation characterized in that: the original I-shaped lower head is changed to L-shape, the horizontal end surface is turned to circular conical surface, and the interface of the locating pin and locating platform on the remote end of intramedullary nail is enlarged.Therefore, the locating pin can successfully orientate in one time when pressing in, and make sure that the deviation on coronal section , caused by intramedullary nail inserting into medullary cavity , is homing fixed at once time by locating pin.Thereby the remote lock nail is able to successfully implant in one time under stable triaxiality, and also has advantages of shortening operation time as well as alleviating sufferings of patients.
Description
Technical field
This utility model relates to medical apparatus and instruments, particularly relates to the intramedullary nail with lock sight that a kind of bone surgery is used.
Background technology
Long bone shaft fracture adopts intramedullary nail with lock to carry out internal fixation treatment, is a kind of method commonly used in the present bone surgery, in closed nailing resets, the operation wound face is little, and is fixed, and stress shielding is little, infection rate is low, and the healing rate height is subjected to medical personnel's welcome deeply.But find in using, it but is a difficult point that distal locking nail is accurately implanted, employing has high-precision import apparatus and also has same problem, and its reason is: the influence that (1) "T"-shaped fixed bar does not penetrate femur anterior bone cortex can make the distal locking nail localizer shift forward; (2) the expansion marrow size in the operation does not often match with the diameter of intramedullary pin, fracture end be reset with bone holder fixing after, the resistance when beating into intramedullary pin is big, Chui Ji result often makes intramedullary pin be out of shape simply, causes the lockhole position deviation; (3) to the fracture of femoral inferior segment, because of intramedullary pin is thinner relatively, and the far-end pulp cavity is bigger, and intra medullary nail far-end may produce and rock; (4) when intramedullary pin insert first piece of lock hole drill of pulp cavity good after, in withdrawing from the process of drill bit, it is mobile that intramedullary pin is twisted, and brings pinning to advance the hole difficulty, have to hole once more, repeatedly boring makes the bone duct increase easily, influence is fixed.Sum up the factor of aspect here, its core is the three-dimensional localization design of intramedullary nail with lock distal lockhole is affected and has produced and depart from, often look for inaccurate intra medullary nail far-end locating platform when causing locating rod to insert bone cavity, so finish whole surgery, have to utilize C type arm accurately to locate, adopt free-hand pointed cone method to place, consequently operating time prolongs, and patient is hemorrhage more, and patient patient is hurt also big in X ray length of following open-assembly time.For addressing this problem, the intramedullary nail with lock that has had improved multiple far-end sight comes into operation, and shows but put into practice, and uses not very good.
The utility model content
This utility model is exactly to have problems at the front, intramedullary nail with lock far-end sight is improved, the effect that is reached is, both just existed problem noted earlier that the distal lockhole location is once finished fast, general purpose can guarantee that the distal locking nail of intramedullary nail with lock is fixing by smooth implantation, both can reduce patient's misery, shortens operating time greatly, can reduce medical personnel's labor intensity again, good economic benefit and social benefit are arranged.
It is to finish by following improvement that the purpose of this utility model realizes, its concrete improvement place only is the T shape handle locating rod to far-end, original " I " shape lower end is improved to " L " shape lower end, basic ideas are the contact surfaces that enlarged locating rod, " coronalplane " in the three-dimensional localization can be departed from rapid correction.
This utility model realizes that accurate localized mechanism is: so distal locking nail can reach accurate implantation fixedly is because it has three-dimensional stability system on the structural design, be so-called long bone about (sagittal plane), about the three-dimensional joining of (frontal plane) and front and back (coronalplane), towards this joining aiming perforation, its pinning generally can not depart from, but since the actual anatomic form of femur and other long bone everyone and not quite identical, certain flexibility is arranged again, often make the intra medullary nail far-end lockhole that penetrates pulp cavity depart from design attitude, cause the intra medullary nail far-end locating platform that should be positioned in the coronalplane central authorities deviation to be arranged in front and back, patient's naked eyes be cannot see again, are exactly a difficult point so make locating rod once successfully find locating platform.After this utility model is modified into " L " shape with " I " shape termination of far-end locating rod, locating platform contact surface on locating rod and the intra medullary nail far-end is strengthened greatly, once success when locating rod is pressed into, in this way, marrow nail inserts behind the pulp cavity bar that can be positioned of departing from coronalplane and once playbacks fixingly, so just can guarantee implantation success of distal locking nail energy.
The advantage that the utlity model has is: (1) distal locking nail accuracy height, and operation is finished smoothly, reduce patient because of repeatedly locking the misery that failure brings; (2) do not need to change the global design of original rig, only improved locating rod termination shape, it is low to improve cost; (3) situation simple to operation, that the useful intramedullary nail with lock of suitable institute is treated, operator need not can grasp by Special Training.
Description of drawings
Accompanying drawing is an intramedullary nail with lock sight sketch map.
Among the figure, 1 is the near-end sight, and 2 is adjusting device, and 3 is connecting rod, and 4 is intramedullary nail with lock, and 5 are the far-end locating rod after improving
The specific embodiment
This utility model is the reality of carrying out the far-end locking difficulty at present used intramedullary nail with lock, only improvement has been done in the locating rod termination, change original " I " shape termination into " L " shape termination, locating platform contact surface on locating rod and the intra medullary nail far-end is strengthened, once success when allowing locating rod be pressed into, make marrow nail insert behind the pulp cavity bar that can be positioned of departing from coronalplane and once playback fixingly, so just can guarantee implantation success of pinning energy of far-end.The horizontal end face of described " L " shape locating rod for inserting conveniently, changes taper seat into.
Overall structure of the present utility model is kept original design, contrast accompanying drawing, the near-end sight 1 of the inside, adjusting device 2, connecting rod 3, all identical with original structure, intramedullary pin 4 is also constant, just far-end locating rod 5 has been carried out adding the improvement of large contact surface, be about to " I " type head and changed " L " type head into, so its using method is constant, just, big approximately than the aperture of operation earlier in the boring in long bone the place ahead.
Claims (2)
1, a kind of intramedullary nail with lock far-end sight locating rod improves, and it is characterized in that: " I " shape lower end that it is original is improved to " L " shape lower end.
2, intramedullary nail with lock far-end sight locating rod according to claim 1 improves, and it is characterized in that: the horizontal end face of described " L " shape termination is a taper seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620006918 CN2873124Y (en) | 2006-03-03 | 2006-03-03 | Far end sighting device positioning rod improvement with lock intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620006918 CN2873124Y (en) | 2006-03-03 | 2006-03-03 | Far end sighting device positioning rod improvement with lock intramedullary nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2873124Y true CN2873124Y (en) | 2007-02-28 |
Family
ID=37779713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620006918 Expired - Fee Related CN2873124Y (en) | 2006-03-03 | 2006-03-03 | Far end sighting device positioning rod improvement with lock intramedullary nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2873124Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106264437A (en) * | 2016-08-30 | 2017-01-04 | 夏德志 | Pulp cavity mirror |
-
2006
- 2006-03-03 CN CN 200620006918 patent/CN2873124Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106264437A (en) * | 2016-08-30 | 2017-01-04 | 夏德志 | Pulp cavity mirror |
| CN106264437B (en) * | 2016-08-30 | 2018-09-04 | 夏德志 | Pulp cavity mirror |
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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: 20070228 |