CN102499748B - Intramedullary compression nail plate for olecroanon - Google Patents
Intramedullary compression nail plate for olecroanon Download PDFInfo
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- CN102499748B CN102499748B CN201110349061.5A CN201110349061A CN102499748B CN 102499748 B CN102499748 B CN 102499748B CN 201110349061 A CN201110349061 A CN 201110349061A CN 102499748 B CN102499748 B CN 102499748B
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- olecroanon
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Abstract
The invention relates to an intramedullary compression nail plate for olecroanon. The intramedullary compression nail plate at least comprises an intramedullary main nail, an inner bushing screw, an anti-rotation screw, an olecranon nail plate and a guider, wherein an axial spiral compression hole is formed in the near-end end face of the intramedullary main nail, and a locking hole is formed in a nail body at the tail end; the inner bushing screw can be screwed in the axial spiral compression hole of the intramedullary main nail, and the tail of the inner bushing screw is provided with a nut cap; the anti-rotation screw can be locked in the locking hole of the intramedullary main nail; the olecranon nail plate is used for exerting force and compressing on fracture lacerated ends by the pushing of the inner bushing screw and is an arc-shaped plate, the appearance of the olecranon nail plate is identical with the anatomical appearance of the olecroanon, and an opening hole through which the inner bushing screw passes is formed in the olecranon nail plate; the guider is in an 'L' shape; and a traverse positioning hole for conveying the anti-rotation screw into the locking hole of the intramedullary main nail is formed in an axial rod body, and an axial positioning device for conveying the inner bushing screw into the axial spiral compression hole of the intramedullary main nail is formed in a traverse rod body. According to the intramedullary compression nail plate for treating olecroanon fracture, a good treatment effect can be achieved, so that patients can start to perform functional training in the postoperative early state.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, nail-plate pressurizes in espespecially a kind of marrow for olecranal fracture.
Background technology
?olecranal fracture is one of common damage of elbow joint.Adult is common.Mainly with due to indirect violence.For example, the place hands on floor of falling, violence is conducted to near-end from far-end, the micro-flexing of elbow joint position, triceps brachii suddenly shrinks and causes olecranal fracture.Fracture mostly is to be walked crosswise or oblique, because fracture line involves olecroanon semilunar notch, thus require to dissect para-position during treatment, fixation, early ambulant, expects the elbow joint function that recovers good.
Now both at home and abroad the Therapeutic Method of olecranal fracture is had conventionally:
1. closed manual reduction, plaster slab is fixing outward.General 3-4 starts functional exercise after week.Now, patient's exercising elbow joint feels there is stiff sense more, if do not step up functional exercise, leaves over elbow joint in various degree and stretches and bend limitedly, even, forms permanent afunction;
2. various exterior fixation bracket are fixed.Its advantage is closed reduction, can early exercise.Shortcoming is pin site infection, life inconvenience etc.;
3. open reduction, interior fixing.Interior fixing method is a lot.Kirschner wire 8-shaped needles combined with tension band is a kind of good internal fixation method, but shortcoming is long incision, and ulnar joint face will appear, complication such as postoperatively occurring after elbow that skin height is dashed forward, touch pain, Kirschner wire exits, steel wire fractures.Lag screw fixation is that employing is a kind of has the screw of sufficient length to control the far-end of fracture, but easily at nail bar and screw thread intersection, ruptures.Fixing applicable to polytype fracture, particularly comminuted fracture in steel plate screw, but its shortcoming is also long incision, and periosteum stripping is extensive, and wound is large, has destroyed fracture blood fortune around, affects union of fracture.Above-mentioned various internal fixation method, advantage is fixing reliable, can early functional exercise.But operative incision is long, in art, organize exposure range large, soft tissue injury weight, has destroyed fracture blood fortune around, not only affects union of fracture, but also has increased infection chance.
At present, in the complication that various Therapeutic Method bring, there is nonunion, joint accretion, ankylosis, myositis ossificans, post-traumatic arthritis, ulnar nerve paralysis etc.Literature search demonstration, for the complication of fracture surgery, it is mostly relevant with inside-fixture that Gregory J Schmeling thinks.There is the symptom of inside-fixture in 22%～80% patient.15% there is Kirschner wire displacement; 34～60% needs of patients takes out inside-fixture.Patient's fragmentation of internal fixation objects of 1～5%.There is postoperative infection in the patient below 6%.2～13% there is ectopic ossification.External doctor Mayo report, approximately has 75% fracture can produce some exercising elbow joints and loses, and 50% has 20～60 ° of LOM, and 20% LOM is greater than 60 °.Follow up a case by regular visits to confirmation, if the postoperative outer set time short (being less than 5 days), lifting affected limb alleviates swelling, and the LOM in joint obviously reduces.
Prevent and reduce the generation of these complication, meanwhile, also will further improve the therapeutic effect of olecranal fracture, this just urgently has better related medical apparatus to occur.
Summary of the invention
The object of this invention is to provide a kind of Olecroanon intramedullary pressurizing pin board, utilize it can realize olecranal fracture minimally-invasive treatment, can maintain elbow joint extensor strength, can prevent early rehabilitation.
For achieving the above object, the present invention takes following design:
An Olecroanon intramedullary pressurizing pin board, it at least includes: main nail in a marrow, its proximal face is offered axial screw pressurization hole, and rivet nut afterbody is offered lock hole; An inner sleeve screw that can be screwed into main nail axial screw pressurization hole in marrow, nail tail is with block; The anti-screw that revolves that can lock main nail lock hole in marrow; One can be by the olecranon nail-plate to the pressurization of the fracture site application of force of pushing of inner sleeve screw, and it is arc shape board, matches with the dissection profile of human body olecroanon, has an open bore of passing for inner sleeve screw on olecranon nail-plate.
Also is furnished with a guider, this guider is " L " shape, on the long-armed axial body of rod, be provided with and can revolve the located lateral hole that screw is sent into the lock hole of main nail in marrow by anti-, on the horizontal body of rod of galianconism, be provided with the axial direction positioning device in the axial screw pressurization hole that inner sleeve screw can be sent into main nail in marrow.
Described axial direction positioning device is a fixture, and its front end has the convergence part with double wedge, is engaged togather with the groove of main nail in marrow.
In described located lateral hole, be nested with a set of pipe.
On the described anti-driving screw that revolves screw, lay spiral helicine ratchet.
Olecroanon intramedullary pressurizing pin board of the present invention is the internal fixation operation medical apparatus and instruments that after the current inside and outside fixation for treatment method pluses and minuses of passing through both at home and abroad of reference, a kind of more clinician of development accepts, utilize its treatment olecranal fracture, can reach good therapeutic effect, make patient can start in early days after surgery to carry out functional exercise; Can farthest avoid the generation of post-operative complication, early recovery elbow joint function.
advantage of the present invention is:
1. simple in structure, convenient operation, specification requirement is not high, easily grasps, and is suitable for promoting the use of clinically;
The fracture fixing operation time short, wound is little, goes out insufficiency of blood, does not destroy fracture peripheral blood circulation, is beneficial to union of fracture;
3. in Olecroanon intramedullary pressurizing pin board formation ulna marrow, centrality tension band is fixed, and to fixing of the olecranal fracture broken ends of fractured bone, has realized maximum biomechanical stability.
Accompanying drawing explanation
Fig. 1 is Olecroanon intramedullary pressurizing pin board structural representation of the present invention (application state).
Fig. 2 is Olecroanon intramedullary pressurizing pin board decomposition texture schematic diagram of the present invention.
Fig. 3 is that in Olecroanon intramedullary pressurizing pin board ulna marrow of the present invention, cell mesh forms schematic diagram.
Fig. 4 is the structural representation of main nail in marrow of the present invention.
Fig. 5 is the structural representation (front view) of inner sleeve screw of the present invention.
Fig. 6 is the structural representation (top view) of inner sleeve screw of the present invention.
Fig. 7 is the anti-structural representation that revolves screw of the present invention.
Fig. 8 is an example structure schematic diagram (main looking) of olecranon nail-plate of the present invention.
Fig. 9 is another example structure schematic diagram (main looking) of olecranon nail-plate of the present invention.
Figure 10 is the side view of the embodiment of olecranon nail-plate shown in Fig. 9.
Figure 11 is the A-A item cutaway view in Fig. 9.
Figure 12 is the structural representation (main looking) of guider of the present invention.
Figure 13 is the structural representation (overlooking) of guider of the present invention.
Figure 14 is that B in Figure 12 is to schematic diagram.
Below in conjunction with drawings and the specific embodiments, the present invention is described in further details.
The specific embodiment
Consult shown in Fig. 1, Fig. 2, Olecroanon intramedullary pressurizing pin board of the present invention can by ulna marrow and outer two big units of ulna marrow partly form the fixed system that pressurizes in marrow.Wherein, cell mesh is the present invention's indispensable main apparatus in application of performing the operation in ulna marrow, and the outer cell mesh of ulna marrow is to provide to the assistive device that uses doctor to guarantee to have performed the operation.
Referring to Fig. 3, in described ulna marrow, unit includes:
1) main nail 1 in a marrow, its proximal face is offered axial screw pressurization hole, and end face edge is provided with two place's grooves, and rivet nut afterbody is offered lock hole, shown in Figure 4; It is the fixing critical piece of olecranal fracture;
2) 2, one inner sleeve screws of an inner sleeve screw, can be screwed into main nail in marrow, by rotation inner sleeve screw, the length that shortens or extend main nail in marrow.Its afterbody is with the head of a nail 21, referring to Fig. 5, Fig. 6 institute;
3) an anti-screw 3 that revolves, can be screwed into the lock hole of main nail 1 in marrow through guider guiding, lays spiral helicine ratchet 31 on its driving screw, can keep the firm stable of pressurization fixed system in whole marrow and prevent main nail rotation in marrow, shown in Figure 7;
4) an olecranon nail-plate 4, referring to Fig. 8 to Figure 10, it is arc shape board, matches with the dissection profile of human body olecroanon, has the perforate 41 of a placement inner sleeve screw on olecranon nail-plate.This perforate 41 can be lipostomous (as shown in Figure 8), also open bore (as shown in Fig. 9, Figure 10 and Figure 11), and the latter is good.During operation, by screwing inner sleeve screw, promote to be placed on the olecranon nail-plate at olecranon top, fracture site is pushed mutually, reach the reduction of the fracture and stable fixation.
The outer cell mesh of described ulna marrow includes:
A guider 5, its structure forms can be referring to shown in Figure 12 to Figure 14, this guider be " L " shape, wherein, on the axial body of rod, have and can revolve the located lateral hole 51 that screw is sent into main nail lock hole in marrow for anti-, on the horizontal body of rod with positioner 52.In use, in this located lateral hole, can be nested with a sleeve 6, by the sleeve being placed on guider, be screwed into the anti-screw that revolves; Laterally on the body of rod, having the axial direction positioning device 7 that can supply inner sleeve screw send into main nail axial screw pressurization hole in marrow.Under the aiming of guider, can carry out the fixing operation of ulna intramedullary pin.Wherein, in the present embodiment, axial direction positioning device 7 is a fixture, and its concrete structure can be referring to Figure 14, and its front end has the convergence part with double wedge, is engaged togather and for inner sleeve screw, sends into the axial screw pressurization hole of main nail in marrow with the groove of main nail in marrow.In the side of axial direction positioning device, establish an opening, by this opening, can make guider separated with main nail in marrow.
For main nail, inner sleeve screw in the marrow of direct implantation or contact human body, anti-ly revolve screw and olecranon nail-plate to adopt titanium alloy material be good.Guider and bush material are not limit, and adopt aluminum material in the present embodiment.
Design principle of the present invention: mechanical analysis shows, when triceps brachii fiercely shrinks, in the articular surface side formation compressive stress of olecroanon, at bone ridge side formation tensile stress.When stress is greater than the strength degree that skeleton can bear, olecroanon 8 is just fractured.Utilize a kind of ulna marrow internal fixation system to rebuild olecroanon, form centrality tension band and fix, can further strengthen the biomechanical stability of fracture fixation.
Operation process of the present invention is: referring to Fig. 1 and Fig. 2, first main nail in marrow is arranged on guider, prepare stand-by; The closed reduction of fracturing under C shape arm machine perspective; At olecroanon place, do again the little otch of 1.5cm, in olecranon tip, along the ulna longitudinal axis, hole afterwards, insert main nail 1 in ulna marrow; Under the guiding of guider locating hole, hole, be screwed into the anti-screw 3 that revolves of main nail in marrow; Remove guider, under the tail cap of the inner sleeve screw 2 of ulna intramedullary pin, place olecranon nail-plate 4, screw inner sleeve screw, pressurization is fracture site 10 fixedly, performs the operation complete.
The present invention is by main nail 1 in marrow, inner sleeve screw 2, the anti-force action that revolves screw 3 and olecranon nail-plate 4, can be effectively fixing olecranal fracture, improve operation quality, really for patient has brought Gospel.
For two large divisions of the present invention, visual supplier's needs, can supply separately (or supply separately cell mesh in ulna marrow, or supply separately ulna marrow outer cell mesh), also can wholely provide (being that both are equipped with simultaneously) together.
The various embodiments described above can some variations in addition under not departing from the scope of the present invention, thus above explanation comprises and accompanying drawing shown in structure should be considered as exemplary, but not in order to limit the protection domain of the application's patent.
Claims (7)
1. a pressurization fixed system in olecroanon marrow, is characterized in that at least including:
Main nail in a marrow, its proximal face is offered axial screw pressurization hole, and rivet nut afterbody is offered lock hole;
One is screwed into main nail in marrow for shortening or extend the inner sleeve screw of the length of main nail in marrow, and this inner sleeve screw afterbody is with the head of a nail;
An anti-screw that revolves that can be screwed into the lock hole of main nail in marrow;
An olecranon nail-plate, it is arc shape board, the dissection profile of profile and olecroanon matches, and has the open bore of a placement inner sleeve screw on olecranon nail-plate;
Separately is furnished with a guider, this guider is " L " shape, on the long-armed axial body of rod, be provided with and can revolve the located lateral hole that screw is sent into the lock hole of main nail in marrow by anti-, on the horizontal body of rod of galianconism, be provided with the axial direction positioning device in the axial screw pressurization hole that inner sleeve screw can be sent into main nail in marrow.
2. pressurization fixed system in olecroanon marrow according to claim 1, is characterized in that: in marrow, main nail proximal face edge is provided with two place's grooves; Described axial direction positioning device is a fixture, its front end have with the ，Gai convergence part, convergence part of double wedge for marrow in the groove of main nail be engaged togather.
3. pressurization fixed system in olecroanon marrow according to claim 1, is characterized in that: an opening is established in the side of described axial direction positioning device.
4. pressurization fixed system in olecroanon marrow according to claim 1, is characterized in that: in the located lateral hole on described guider, be nested with a set of cylinder.
5. pressurization fixed system in olecroanon marrow according to claim 1, is characterized in that: on the described anti-driving screw that revolves screw, lay spiral helicine ratchet.
6. pressurization fixed system in olecroanon marrow according to claim 1, is characterized in that: described guider is aluminum material; Main nail in described marrow, inner sleeve screw, anti-ly revolve screw and olecranon nail-plate is titanium alloy material.
7. pressurization fixed system in olecroanon marrow according to claim 4, is characterized in that: described sleeve is aluminum material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110349061.5A CN102499748B (en) | 2011-11-08 | 2011-11-08 | Intramedullary compression nail plate for olecroanon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110349061.5A CN102499748B (en) | 2011-11-08 | 2011-11-08 | Intramedullary compression nail plate for olecroanon |
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| Publication Number | Publication Date |
|---|---|
| CN102499748A CN102499748A (en) | 2012-06-20 |
| CN102499748B true CN102499748B (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110349061.5A Expired - Fee Related CN102499748B (en) | 2011-11-08 | 2011-11-08 | Intramedullary compression nail plate for olecroanon |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103610490B (en) * | 2013-12-18 | 2016-08-17 | 刘杰 | Swollen pinning and preparation method thereof in a kind of pressurization marrow |
| CN103800065A (en) * | 2014-03-03 | 2014-05-21 | 田康 | Malleolus medialis fixing steel plate system |
| CN103845111B (en) * | 2014-03-19 | 2017-01-25 | 邓宇 | Femoral neck conical hollow screw guider |
| TWI544894B (en) * | 2015-01-29 | 2016-08-11 | 愛派司生技股份有限公司 | A securing bone plate |
| CN106618709A (en) * | 2016-12-31 | 2017-05-10 | 田康 | Elastic intramedullary nail for ulnar fracture and fixator of elastic intramedullary nail |
| CN113143545A (en) * | 2021-05-10 | 2021-07-23 | 北京智康汇成科技有限公司 | Intramedullary axial compression fixation prosthesis for metaphyseal bone defects |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0321170A1 (en) * | 1987-12-14 | 1989-06-21 | Howmedica International Inc. | Intramedullary intertrochanteric fracture fixation appliance and fitting device |
| CN1714764A (en) * | 2004-06-28 | 2006-01-04 | 朱敏 | Resetting and inner fixing device for fracture of neck of femur |
| CN201734770U (en) * | 2010-07-12 | 2011-02-09 | 厦门大博颖精医疗器械有限公司 | Combined intramedullary nail |
| CN202313688U (en) * | 2011-11-08 | 2012-07-11 | 刘杰 | Olecroanon intramedullary pressurizing pin board |
-
2011
- 2011-11-08 CN CN201110349061.5A patent/CN102499748B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0321170A1 (en) * | 1987-12-14 | 1989-06-21 | Howmedica International Inc. | Intramedullary intertrochanteric fracture fixation appliance and fitting device |
| CN1714764A (en) * | 2004-06-28 | 2006-01-04 | 朱敏 | Resetting and inner fixing device for fracture of neck of femur |
| CN201734770U (en) * | 2010-07-12 | 2011-02-09 | 厦门大博颖精医疗器械有限公司 | Combined intramedullary nail |
| CN202313688U (en) * | 2011-11-08 | 2012-07-11 | 刘杰 | Olecroanon intramedullary pressurizing pin board |
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| CN102499748A (en) | 2012-06-20 |
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