CN205913384U - Lock multidirectional area lock intramedullary nail - Google Patents
Lock multidirectional area lock intramedullary nail Download PDFInfo
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- CN205913384U CN205913384U CN201620676455.XU CN201620676455U CN205913384U CN 205913384 U CN205913384 U CN 205913384U CN 201620676455 U CN201620676455 U CN 201620676455U CN 205913384 U CN205913384 U CN 205913384U
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- lock
- nail hole
- pinning
- locking nail
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Abstract
The utility model provides a lock multidirectional area lock intramedullary nail, belong to medical instrument, the main distal end of following closely is equipped with front and back directional lock nail direct puncture lock nail hole A, cross lock nail hole B inside and outside the inside and outside directional lock nail, cross inside and outside two inside and outside directions or be the lock nail hole C that wears to one side inside and outside 45, direct puncture lock nail hole A around the directional lock nail around the near -end is equipped with, two mutual one -tenth 90 alternately and with before near -end lock nail hole A becomes 45 pinning in, outside the preceding export -oriented back, the lock nail hole D that back internal flush was worn, two inside and outside directions are inside and outside flat wears or is the lock nail hole C that wears to one side inside and outside 45, cross lock nail hole B inside and outside the inside and outside direction. The utility model has the advantages that: angle stability is stronger between main nail and the pinning, closely, the distal end has multidirectional locking, the extrusion fixed action is surroundd to high screw thread spongy bone pinning remote site fracture.
Description
Technical field
This utility model belongs to a kind of medical apparatus and instruments, locks multidirectional intramedullary nail with lock particularly to a kind of.
Background technology
Tibia is near, fracture of distal, and more particularly to IA Platform Fracture and pilon fracture are common joint internal skeleton
Folding, operation is treatment tibial plateau and the main method of pilon fracture, frequently with open reduction steel plate screw internal fixation, by
It is that eccentricity marrow outer support is fixed in non-locking steel screw, steel plate is difficult to symmetrically be fixed with the fracture of offside.So it is clinical
Encircle support frequently with double steel plate or three steel plates to fix, but this fixed form can cause major injury to local soft tissue.
The appearance of locking steel plate is a progress for the treatment of for tibial plateau fracture, its provide outside marrow relative to symmetric support fix, special
It is not complexity fracture, curative effect is reliable.But because steel plate screw fixation is required to cut and separates large range of soft tissue, institute
So that the soft tissue having damaged is increased to damage and bring beyond doubt with the risk of higher postoperative infection.
Current intramedullary nail with lock is only applicable to the fracture of tibial shaft, for tibia is remote, near-end fracture is contraindication, former
Because being 1. current no " angle is stable " function between the main nail of tibia marrow nail of Clinical practice and pinning, do not have each other
There is lock function；2. tibia marrow nail is near, distal locking nail hole is few, and the multidirectional lock function of no science；3. pinning itself
There is no cancellous bone screw function, effect is not encircled to Platform Fracture；4. it is related to intra-articular fracture, solid in restricted locking
On the basis of fixed, still need and will non-limiting lag-screw of cancellous bone auxiliary fix, that is, " raft nail " is fixing, so that intra-articular fracture is turned
For extra-articular fracture.
Utility model content
The purpose of this utility model is to overcome above-mentioned defect, provides a kind of locking multidirectional intramedullary nail with lock, its master
Between nail and pinning, there is lock function, angle stability is higher；Closely, far-end has multidirectional locking；High screw thread spongy bone pinning pair
End fracture encircles extruding fixation；Reduce soft tissue to cut and dissection scope, the blood supply outside protection marrow, correspondingly protect
Protect the soft tissue dampened, reduce complication.
The purpose of this utility model is achieved through the following technical solutions: a kind of multidirectional intramedullary nail with lock of locking, including
Main nail and pinning, described main follow closely as shaft-like, main nail proximally and distally between be provided with bent angle forward it is characterised in that: institute
The far-end stating main nail is provided with four locking nail holes, is one fore-and-aft direction locking nail hole a of distalmost end respectively, before and after pinning, direct puncture enters pinning
Hole a, one inward-outward direction locking nail hole b of nearside, cross locking nail hole b inside and outside pinning, middle two inward-outward direction locking nail hole ca and cb,
Locking nail hole ca and cb is respectively positive water-drop-shaped and anti-water-drop-shaped, and locking nail hole ca with cb is oblique in main nail to be connected, structure water at 45 °
Drip type passage, inside and outside pinning, cross locking nail hole ca and cb, or tiltedly wear locking nail hole ca and cb in 45 ° through inside and outside droplet-shaped passage；
The near-end of described main nail is provided with eight locking nail holes, is one fore-and-aft direction locking nail hole a of most proximal end respectively, direct puncture pinning before and after pinning
Hole a, two-layer locking nail hole d thereunder, every layer of locking nail hole d is included two and mutually in 90 ° intersect and become with most proximal end locking nail hole a
45 ° of locking nail hole d, pinning in the past in outer or front outer interior backward direct puncture each locking nail hole d backward, in two below locking nail hole d
Outer direction locking nail hole ca and cb, locking nail hole ca and cb are respectively positive water-drop-shaped and anti-water-drop-shaped, and locking nail hole ca and cb is in main nail
Oblique connection, structure droplet-shaped passage at 45 °, crosses locking nail hole ca and cb, or passes through in droplet-shaped passage in 45 ° inside and outside pinning
Tiltedly wear locking nail hole ca and cb outward；One inward-outward direction locking nail hole b of farthest side, crosses locking nail hole b inside and outside pinning.
Described proximal diameter is more than mobile jib diameter.
Described bent angle is 8 ± 3 °.
Described pinning in the hole is provided with screw thread, does not set screw thread or be partly provided with screw thread.
Described pinning is high screw thread spongy bone pinning, and rivet nut is provided with cancellous threads, and cancellous threads height is 0.2
2.5mm, cancellous threads silk bottom is circle shoulder pole type.
Pitch 1.0 4.0mm of described cancellous threads.
Described cancellous threads silk bottom diameter 2.0 6.0mm, high screw thread spongy bone pinning external diameter 4.5-6.5mm.
Advantage of the present utility model and beneficial effect are:
1st, adopt spongy bone pinning, its bottom is designed as circle shoulder pole type, make, between main nail and pinning, there is lock function, angle
Stability is higher, increases the fatigue resistance of pinning simultaneously, reduces the complication of fracture；
2nd, the multidirectional locking of pinning, can direct puncture, cross or tiltedly penetrate locking nail hole, formed three-dimensional fixing, near, far-end locking direction
By the anatomic form feature design of proximal tibial platform, far-end articular surface of ankle, there is the multidirectional lock function of science；
3rd, high screw thread spongy bone pinning opposite end fracture encircles extruding fixation；
4th, the multidirectional intramedullary nail with lock of locking reduces soft tissue and cuts and dissection scope, the blood supply outside protection marrow, accordingly
The soft tissue that ground protection is dampened, reduces complication.
5th, the axle center locking multidirectional intramedullary nail with lock supports fixation, makes interior outside platform accept symmetric support power.
Brief description
Fig. 1 is the schematic front view of main nail.
Fig. 2 is the schematic side view of main nail.
Fig. 3 is the a-a section enlarged diagram of the Fig. 1 with pinning.
Fig. 4 is the b-b section enlarged diagram of the Fig. 1 with pinning.
Fig. 5 is pinning structural representation.
Fig. 6 is the left view of Fig. 5.
Fig. 7 is the right view of Fig. 5.
Wherein: the main nail of 1-, 2- pinning, 3- bent angle, 4- locking nail hole a, 5- locking nail hole d, 6- locking nail hole ca, 6 '-locking nail hole cb,
7- locking nail hole b, 8- water-drop-shaped passage, 9- passes through the pinning of locking nail hole a, and 10- passes through the pinning of locking nail hole d, and 11- passes through locking nail hole
The pinning of ca-cb water-drop-shaped passage, 12- rivet nut, the 13- head of a nail, 14- cancellous threads, 15- silk bottom.
Specific embodiment
Embodiment: as illustrated, a kind of lock multidirectional intramedullary nail with lock, including main nail 1 and pinning 2, described main nail 1 is bar
Shape, material is titanium alloy or 317l rustless steel, a diameter of 8-12mm of main nail, is provided with 8 forward at the near-end 5-11cm of main nail 1
±3.Bent angle 3, a diameter of 10 14mm of this bending point to near-end, be provided with eight locking nail holes in near-end 60mm, be respectively away from
The threaded locking nail hole a 4 of a fore-and-aft direction at near-end 10mm, before and after high screw thread spongy bone pinning 2, direct puncture enters locking nail hole a
4, the thread depth of high screw thread spongy bone pinning is 0.2 2.5mm, pitch 1.0 4.0mm, and silk bottom is circle shoulder pole type, and silk bottom is straight
Footpath 2.0 6.0mm, it is threaded that the lower section of pinning external diameter 4.5-6.5mm, locking nail hole a arranges two-layer at near-end 18mm and 28mm
Locking nail hole d 5, every layer of locking nail hole d 5 include two locking nail hole d 5, and two locking nail hole d 5 are mutually in 90 ° to intersect and and most proximal end
Locking nail hole a is at 45 °, and in high screw thread spongy bone pinning 2 the past, outer or front outer interior putting down backward penetrates each locking nail hole d 5 backward, Gu
Fixed platform sclerite, two inward-outward direction threaded locking nail hole ca 6 Hes at near-end 35mm and 47mm for locking nail hole d 5 distally
Cb 6 ', locking nail hole ca 6 and cb 6 ' are respectively positive water-drop-shaped and anti-water-drop-shaped, and locking nail hole ca 6 and cb 6 ' is oblique in main nail 1
To connection, structure droplet-shaped passage 8 at 45 °, crosses locking nail hole ca 6 and cb 6 ' inside and outside high screw thread spongy bone pinning 1, or is in
Tiltedly wear locking nail hole ca 6 and cb 6 ' through inside and outside droplet-shaped passage 8 for 45 °；At near-end 60mm, farthest side one is inward-outward direction
Threaded locking nail hole b 7, high screw thread spongy bone pinning 2 traverses into locking nail hole b 7 from Inside To Outside；Treatment fracture of tibia or near
During the platform of end, near-end plays the effect of horizontal support tibial plateau.
The far-end of described main nail is provided with four locking nail holes, is the non-spiral shell of one fore-and-aft direction of distalmost end away from far-end 5mm respectively
Stricture of vagina locking nail hole a 4, direct puncture locking nail hole a 4 before and after high screw thread spongy bone pinning 2, away from the non-threaded lock of mono- inward-outward direction of far-end 35mm
Nail b 7, high screw thread spongy bone pinning 2 from inside to outside crosses locking nail hole b 7, non-threaded away from far-end 15mm and 23mm inward-outward direction
Locking nail hole ca 6 and cb 6 ', locking nail hole ca 6 and cb 6 ' are respectively positive water-drop-shaped and anti-water-drop-shaped, locking nail hole ca 6 and cb 6 '
Oblique connection in main nail, structure droplet-shaped passage 8 at 45 °, crosses locking nail hole ca 6 and cb inside and outside high screw thread spongy bone pinning 2
6 ', or tiltedly wear locking nail hole ca 6 and cb 6 ' in 45 ° through inside and outside droplet-shaped passage 8.
The rivet nut 12 of high screw thread spongy bone pinning 2 is provided with cancellous threads 14, and cancellous threads 14 height is 0.2
2.5mm, pitch 1.0 4.0mm, the silk bottom 15 of cancellous threads is circle shoulder pole type, diameter 2.0 6.0mm, high screw thread spongy bone
Pinning external diameter 4.5-6.5mm..
Can, fracture of near-end remote to the fracture of tibial shaft, tibia be treated using locking multidirectional intramedullary nail with lock.
In October, 2008 in May, 2012, treat and obtain follow-up using locking multidirectional intramedullary nail with lock technique for fixing
38 closure patients with tibial plateau fractures data, man 22, female 16；28～67 years old age, average 48.7 years old；Left side 24
Example, 14, right side；It is fresh fracture.Fracture of the tibial plateau adopts ao/ota typing: 4, b1 type, 1, b2 type, 14, b3 type；
8, c1 type, 5, c2 type, 6, c3 type.Wherein adopt the multidirectional intramedullary nail with lock immobilized patients of closed reduction locking 4, account for
10.5%；Selected fixing in approach row Limited open reduction according to fracture line and sclerite distribution situation, row open reduction is fixed
Patient 34, accounts for 89.5%, postoperative is estimated using improvement hohl-luck fracture of the tibial plateau evaluation system.
38 patients all obtain follow-up, follow up time 11～23 months as a result, and average 18.1 months, fracture all obtained bone and heals
Close, average bony union time 87.4d, the average 108.9d of complete weight carrying swimming.Last follow-up is pressed improvement hohl-luck tibia and is put down
Platform fracture evaluation system, wherein radiological evaluation: excellent 23, good 9, can 6, acceptance rate 84.2%.Functional evaluation: excellent 28
Example, good 8, can 2, acceptance rate 94.7%.During Follow-up After, none example appearance infection, screw loosening and fracture, deformity are healed
The complication such as conjunction, disunion.Conclusion for different fracture of the tibial plateau types, by knee joint mini-invasive incision, interior outside
Before oblique otch and knee joint, center straight cut can obtain satisfied reset effect；Propped up using locking in the marrow of multidirectional intramedullary nail with lock
The satisfactory effect of fracture of the tibial plateau is treated in support, restricted and non-limiting Multi-directional three-dimensional technique for fixing, using the multidirectional band of locking
Lock intramedullary nail is a kind of alternative therapeutic scheme of safety, has early postoperation functional exercise, less complication.
Model case one, man, 52 years old left tibias Platform Fracture c3 type, with fibular head fracture.
Model case one: man, 52 years old left tibias Platform Fracture c3 type, with fibular head fracture
A preoperative x-ray piece, ct add the postoperative x-ray piece of three-dimensional reconstruction image film b, and upper three is restricted locking, nethermost
Follow closely technology for poller, c takes out tlmiin postoperative x-ray piece d for postoperative 15 months and takes out 2 weeks knee articulation situations after tlmiin
Model case two, man, 47 years old right tibial plateau b3 type fracture, with posterior cruciate ligament attachment point part avulsion fracture and
Lateral meniscuses tear damages.
Model case two: man, 47 years old right tibial plateau b3 type fracture, with posterior cruciate ligament attachment point part avulsion fracture and
Lateral meniscuses tear damages.
A preoperative positive side position x-ray piece b ct and mri c postoperative x-ray piece, uppermost three lag-screw of cancellous bone are
" raft " follows closely technology, and the overall fixing postoperative 7 weeks knee joint functions of jail technology d that define are excellent, do not help and turn walking.
Claims (7)
1. a kind of lock multidirectional intramedullary nail with lock, include main follow closely and pinning, described main follow closely as shaft-like, in main nail proximally and distally
Between be provided with bent angle forward it is characterised in that: the far-end of described main nail is provided with four locking nail holes, before being distalmost end one respectively
Rear direction locking nail hole a, before and after pinning, direct puncture enters locking nail hole a, one inward-outward direction locking nail hole b of nearside, crosses pinning inside and outside pinning
Hole b, middle two inward-outward direction locking nail hole ca and cb, locking nail hole ca and cb are respectively positive water-drop-shaped and anti-water-drop-shaped, locking nail hole
Ca with cb is oblique in main nail to be connected, and structure droplet-shaped passage at 45 ° crosses locking nail hole ca and cb, or wears in 45 ° inside and outside pinning
Cross and inside and outside droplet-shaped passage, tiltedly wear locking nail hole ca and cb；The near-end of described main nail is provided with eight locking nail holes, is most proximal end one respectively
Individual fore-and-aft direction locking nail hole a, direct puncture locking nail hole a before and after pinning, two-layer locking nail hole d thereunder, every layer of locking nail hole d include two
Individual intersection mutually in 90 ° and the locking nail hole d at 45 ° with most proximal end locking nail hole a are outer or front outer interior straight backward backward in pinning the past
Wear each locking nail hole d, two below locking nail hole d inward-outward direction locking nail hole ca and cb, locking nail hole ca and cb are respectively positive water droplet
Shape and anti-water-drop-shaped, locking nail hole ca with cb is oblique in main nail to be connected, and structure droplet-shaped passage at 45 ° crosses lock inside and outside pinning
Nail ca and cb, or tiltedly wear locking nail hole ca and cb in 45 ° through inside and outside droplet-shaped passage；One inward-outward direction locking nail hole of farthest side
B, crosses locking nail hole b inside and outside pinning.
2. according to claim 1 a kind of lock multidirectional intramedullary nail with lock it is characterised in that: described proximal diameter is more than master
Shank diameter.
3. according to claim 1 a kind of lock multidirectional intramedullary nail with lock it is characterised in that: described bent angle is 8 ± 3 °.
4. according to claim 1 a kind of lock multidirectional intramedullary nail with lock it is characterised in that: described pinning in the hole is provided with spiral shell
Stricture of vagina, do not set screw thread or part be provided with screw thread.
5. according to claim 1 a kind of lock multidirectional intramedullary nail with lock it is characterised in that: described pinning is high screw thread pine
Matter bone pinning, rivet nut is provided with cancellous threads, and cancellous threads height is 0.2 2.5mm, and cancellous threads silk bottom is round flat
Load shape.
6. according to claim 5 a kind of lock multidirectional intramedullary nail with lock it is characterised in that: described high screw thread spongiosa murices
Pitch 1.0 4.0mm of stricture of vagina.
7. according to claim 5 a kind of lock multidirectional intramedullary nail with lock it is characterised in that: described high screw thread spongiosa murices
Stricture of vagina silk bottom diameter 2.0 6.0mm, high screw thread spongy bone pinning external diameter 4.5-6.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620676455.XU CN205913384U (en) | 2016-06-30 | 2016-06-30 | Lock multidirectional area lock intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620676455.XU CN205913384U (en) | 2016-06-30 | 2016-06-30 | Lock multidirectional area lock intramedullary nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205913384U true CN205913384U (en) | 2017-02-01 |
Family
ID=57875817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620676455.XU Withdrawn - After Issue CN205913384U (en) | 2016-06-30 | 2016-06-30 | Lock multidirectional area lock intramedullary nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205913384U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105997219A (en) * | 2016-06-30 | 2016-10-12 | 王永清 | Multidirectional locking intramedullary interlocking nail |
| CN107961067A (en) * | 2018-01-12 | 2018-04-27 | 四川大学华西医院 | Lateral inlet tibiobone marrow internal needle |
| CN108125712A (en) * | 2017-11-30 | 2018-06-08 | 中国人民解放军第七五医院 | A kind of novel femoral interlocking nail |
-
2016
- 2016-06-30 CN CN201620676455.XU patent/CN205913384U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105997219A (en) * | 2016-06-30 | 2016-10-12 | 王永清 | Multidirectional locking intramedullary interlocking nail |
| CN105997219B (en) * | 2016-06-30 | 2018-06-22 | 王永清 | Lock multidirectional intramedullary nail with lock |
| CN108125712A (en) * | 2017-11-30 | 2018-06-08 | 中国人民解放军第七五医院 | A kind of novel femoral interlocking nail |
| CN107961067A (en) * | 2018-01-12 | 2018-04-27 | 四川大学华西医院 | Lateral inlet tibiobone marrow internal needle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170201 Effective date of abandoning: 20180622 |
|
| AV01 | Patent right actively abandoned |