CN203662885U - Compression intramedullary expansion locking nail - Google Patents
Compression intramedullary expansion locking nail Download PDFInfo
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- CN203662885U CN203662885U CN201320840286.5U CN201320840286U CN203662885U CN 203662885 U CN203662885 U CN 203662885U CN 201320840286 U CN201320840286 U CN 201320840286U CN 203662885 U CN203662885 U CN 203662885U
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- nail
- marrow
- swollen
- compression
- pressurization
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Abstract
The utility model discloses a compression intramedullary expansion locking nail which comprises a main intramedullary nail body, an inward expansion screw, a compression sleeving nail body and an arc-shaped tail end nail plate. A main rod of the main intramedullary nail body is provided with a hollow hole, an axial inner hole which is in threaded connection with the compression sleeving nail body is formed in the near end of the main intramedullary nail body, a group of valve clack type wing-shaped sheets capable of being driven by inner supporting force to expand outwards is arranged at the far end of the main intramedullary nail body, and at least two tip blades are arranged on the outer side body of each wing-shaped sheet. The group of valve clack type wing-shaped sheets at the far end of the main intramedullary nail body extends by tightening the inward expansion screw. The compression sleeving nail body can be screwed into the axial inner hole in the near end of the main intramedullary nail body, the tail portion of the compression sleeving nail body is provided with a nail cap, and the overall length of the compression intramedullary expansion locking nail is reduced or increased by screwing in and screwing out the compression sleeving nail body. An open hole allowing the compression sleeving nail body to penetrate is formed in the tail end nail plate, and the tail end nail plate is pressed on an affected body through the nail cap at the tail portion of the tightened compression sleeving nail body. The compression intramedullary expansion locking nail can achieve minimally invasive treatment of olecranal fracture and fibula lateral malleolus fracture and recover the functions of the elbow joint and the functions of theankle joint in the early days.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, espespecially a kind of for outside olecranal fracture and fibula
The swollen pinning of pressurization in the medullary cavity of fracture of ankle.
Background technology
(1) olecranal fracture
Olecranal fracture is one of common damage of elbow joint.Adult is common, mainly with due to indirect violence.Because damage belongs to intra-articular fracture, therefore require anatomical reduction while treatment, articular surface is level and smooth, fixation, and energy early ambulant, to recovering good elbow joint function.Conventionally have in closed manual reduction and open reduction fixing for the Therapeutic Method of the olecranal fracture being shifted.
Now both at home and abroad the Therapeutic Method of olecranal fracture is had conventionally:
1) closed manual reduction, plaster slab is fixing (adopting exterior fixation bracket, referring to Figure 10) outward, after general 3-4 week, starts functional exercise.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.Its advantage is can early exercise.Shortcoming is that needle track is nursed not kindness generation pin site infection, osteomyelitis.Fracture not between healing stage, external fixer brings the inconvenience of life to suffering limb.
2) open reduction, interior fixing.Interior fixing method is a lot, and skin incision is generally at 8-10cm.
As shown in figure 11, one of interior fixing method is: Kirschner wire 8-shaped needles combined with tension band is a kind of internal fixation method preferably, but shortcoming is long incision, 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.
In another, fixing method is Lag screw fixation, be to adopt a kind of far-end that has the screw of sufficient length to control fracture, but easily in nail bar and the fracture of screw thread intersection.
It is fixing in steel plate screw also having a kind of interior fixing method, and applicable to polytype fracture, particularly comminuted fracture, 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.
(2) the outer fracture of ankle of fibula
The outer fracture of ankle of fibula is clinical common type in ankle joint fracture.Mainly because indirect violence causes.Outer fracture of ankle is intra-articular fracture, and malpractice there will be traumatic ankle arthritis, walking pain.Therefore, fracture requires anatomical reduction.
At present, both at home and abroad the Therapeutic Method of the outer fracture of ankle of fibula is had conventionally:
1. simple plaster slab is fixing outward.For without displacement and the outer fracture of ankle of the fibula separating without Tibiofibular joint, give with a plaster slab that turns up and fix outward, after 6～8 weeks, carry out the functional exercise of ankle joint.
2. fixing in open reduction.For the patient of displacement fracture, the outer fracture of ankle parking position accuracy of requirements of operation, recovery fibula height.
A) Kirschner wire needles combined with tension band internal fixation (referring to Figure 12, Figure 13).Advantage is: meet the biomechanical principle of external malleolus, and simple in structure, fixing reliable, little to fracture peripheral blood circulating effect, be beneficial to union of fracture.Can early functional exercise.Shortcoming is: can occur the complication such as Kirschner wire exits, steel wire fractures.
B) internal fixation with steel plate (referring to Figure 14, Figure 15).Advantage is: good to comminuted fracture fixed effect.Shortcoming is: skin incision is large, and soft tissue injury weight infects probability large.For serious osteoporosis person, steel plate screw can not reach and fixedly secure, and causes and gets loose, and moves back nail.
The various operation internal fixation methods of above-mentioned two kinds of fracture, 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 postoperative complication of olecranal fracture, 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.
In addition, for the fracture internal fixation treatment of advanced age, diabetes and patients with osteoporosis, use common operative treatment at present, all have larger risk, thereby make many patients lose the chance of better treatment.
Prevent and reduce the generation of these complication, meanwhile, also will further improve the therapeutic effect of the outer fracture of ankle of olecranal fracture and fibula, this just urgently has better related medical apparatus to occur.
Utility model content
The purpose of this utility model is to provide swollen pinning in a kind of pressurization marrow, and it can realize the minimally-invasive treatment of olecranal fracture and the outer fracture of ankle of fibula; Can recover in early days elbow, ankle joint function.
For achieving the above object, this utility model is taked following design:
Swollen pinning in a kind of pressurization marrow, it includes:
Main nail in a marrow, in this marrow, the mobile jib of main nail is with hollow hole, in marrow, the near-end of main nail is offered the axial bore connecing with pressure cuffs oncomelania, the distal head of main nail is one group and ordered about and the lobe formula wing sheet that outwards opens by interior support force in marrow, on the outer lateral body of each wing sheet with at least two most advanced and sophisticated swords;
Swollen screw in one, struts one group of wing sheet of main nail distal end portion in marrow by screwing this interior swollen screw;
One can be screwed in marrow in main nail near-end axial bore and afterbody with the pressure cuffs nail of the head of a nail, the screw-in of following closely by this pressure cuffs and screw out the entire length of swollen pinning in the pressurization marrow that can stretch;
An arcuation tail end nail-plate, on this tail end nail-plate, offer for pressure cuffs nail through open bore, be against and be applied on body by the head of a nail of the pressure cuffs nail afterbody after screwing.
In described pressurization marrow, in swollen pinning, the inner side of described wing sheet is threaded, and the head sections of described interior swollen screw has the screw thread that can mutually be spirally connected with wing sheet female thread.
In described pressurization marrow, in swollen pinning, the most advanced and sophisticated sword on the outer lateral body of described wing sheet is opened on its distal head; On the outer lateral body of each wing sheet with 2 to 6 most advanced and sophisticated swords; In the time that the quantity of one group of wing sheet is less than 3, preferred most advanced and sophisticated sword is offered as biserial.
In described pressurization marrow, in swollen pinning, the arc of described tail end nail-plate, with identical by the person's of executing olecroanon or fibula external malleolus tip shapes, when operation, is against by the person's of executing olecroanon or fibula external malleolus tip place by the head of a nail of the pressure cuffs nail afterbody after screwing.
In described marrow, main nail is made up of 316 medical stainless steel materials; On the outer lateral body of each wing sheet of its distal head preferably with 2 to 5 most advanced and sophisticated swords.
In described pressurization marrow, in swollen pinning, the thickness of described wing sheet is 1 ± 0.2mm.
In this utility model pressurization marrow, swollen pinning is a kind of inner fixation surgical instrument, utilizes the outer fracture of ankle of its treatment olecranal fracture and fibula, can reach better therapeutic effect, makes patient can both can start to carry out in early days after surgery functional exercise.
The utility model has the advantages that:
1. swollen pinning can form centrality tension band in marrow and fixes in human body long bone in pressurization marrow of the present utility model, has maximum biomechanical stability;
2. in pressurization marrow of the present utility model, swollen pinning is simple in structure, and convenient operation, utilizes its internal fixation operation time of fracturing short, and technical requirement is not high, easily grasps, and is suitable for promoting the use of clinically;
3. utilize swollen pinning in pressurization marrow of the present utility model to perform the operation, operation skin incision is little, and soft tissue, periosteum destroy few, do not need to cut joint capsule, go out insufficiency of blood, and infection rate reduces.Meanwhile, operation does not destroy the circulation of fracture peripheral blood, is beneficial to union of fracture;
4. because wound is little, fixing in the suitable fracture that swollen pinning in pressurization marrow of the present utility model is merged to internal disease patient for advanced age, diabetes etc.;
5. in this pressurization marrow, swollen pinning has pressurization, can increase the bed knife of fracture, therefore it is interior fixing to be applicable to the fracture of sufferers of osteoporosis face.
Accompanying drawing explanation
Fig. 1 is swollen pinning structural representation (application state) in this utility model pressurization marrow.
Fig. 2 is swollen pinning decomposition texture schematic diagram in this utility model pressurization marrow.
Fig. 3 is the structural representation of main nail in this utility model marrow.
Fig. 4 is the structural representation of swollen screw in this utility model.
Fig. 5 is the structural representation of this utility model pressure cuffs nail.
Fig. 6 is this utility model tail end nail-plate one example structure schematic diagram (front view).
Fig. 7 is this utility model tail end nail-plate one example structure schematic diagram (side view).
Fig. 8 is the processing structure schematic diagram (main looking) of main nail one embodiment in this utility model marrow.
Fig. 9 is the upward view of Fig. 8 structural representation.
Figure 10 is the exterior fixation bracket structural representation using in the closed manual reduction of prior art.
Figure 11 uses Kirschner wire 8-shaped needles combined with tension band fixing means schematic diagram in prior art.
Figure 12 is Kirschner wire needles combined with tension band internal fixation method schematic diagram in prior art (main looking).
Figure 13 is Kirschner wire needles combined with tension band internal fixation method schematic diagram (side-looking) in prior art.
Figure 14 is prior art light plate internal fixation method schematic diagram (main looking).
Figure 15 is prior art light plate internal fixation method schematic diagram (side-looking).
Below in conjunction with drawings and the specific embodiments, this utility model is described in further details.
The specific embodiment
Consult shown in Fig. 1, Fig. 2, in pressurization marrow of the present utility model, swollen pinning is by fracture with compressive fixture in four parts (main nail 1, interior swollen screw 2, pressure cuffs nail 3 and tail end nail-plate 4 in marrow) olecroanon combining or the medullary cavity of the outer fracture of ankle of fibula.
Referring to Fig. 3, in pressurization marrow of the present utility model, the core component of swollen pinning is main nail 1 in marrow, its mobile jib is hollow, in marrow, the near-end of main nail is offered the axial bore 1.1 connecing with pressure cuffs oncomelania, the distal head of main nail is that one group (2～5) can be ordered about and the lobe formula wing sheet 11 that outwards opens by interior support force in marrow, on the outer lateral body of each wing sheet, with at least one most advanced and sophisticated sword 12, the common initiating terminal of each wing sheet inner side is provided with interior swollen screw hole 1.2.Described axial bore 1.1, interior swollen screw hole 1.2 can be to be made into integration with the hollow hole of mobile jib.
Most advanced and sophisticated sword on the outer lateral body of described wing sheet is opened on its distal head, and the quantity that most advanced and sophisticated sword is offered should be at least two; In the time that the quantity of one group of wing sheet is less than 3, preferred most advanced and sophisticated sword is offered as biserial, can better reach fixation by the most advanced and sophisticated sword on wing sheet.When single-row, the quantity of the most advanced and sophisticated sword of every row is preferably 2～3, and when biserial, the quantity of the most advanced and sophisticated sword of every row is preferably 1～2; Quantity is too much, can cause unnecessary wound, very few, can have the problem of steadiness.
Fig. 8 and Fig. 9 show the concrete structure of an embodiment of main nail 1 in marrow: 2 lobe wing sheets, and the most advanced and sophisticated sword on the outer lateral body of wing sheet is offered and is arranged for biserial 3, referring to this Fig. 8 and Fig. 9, in this utility model marrow, the making of main nail 1 is first to mark to make the mobile jib region of main nail and the machining area of one group of wing sheet in marrow; Go out hollow hole at mobile jib region processing, and the near-end car of main nail goes out to connect screw thread to complete the processing of axial bore in marrow; At the machining area of wing sheet, process bellmouth at metal bar Nei center and car goes out to connect screw thread, in the outside of this regional metal bar, processed from shallow to deep to limit end by center, keep being stayed the wall thickness of part consistent, and process most advanced and sophisticated sword at predetermined design place, by predetermined number valve cutting, finally obtain main nail in marrow.Certainly, the method for processing is not limited only to this, as long as it is all suitable to complete primary structure one blanking method of these parts.The making of main nail is the numerical value obtaining according to people's ulna and fibula anatomic measurement in marrow, makes several different sizes.Length is respectively 6 centimetres, 7 centimetres and 8 centimetres; Diameter is 5 millimeters and 6 millimeters.In the time that being used, reality by the measurement of X-ray, chooses main nail in suitable marrow.
Shown in Figure 4, be the structural representation of swollen screw 2 in this utility model, when use, the interior tail end wing sheet 11 that can make main nail 1 in marrow of interior swollen screw hole 1.2 that is screwed into main nail 1 in marrow opens.
Shown in Figure 5, for the structural representation of this utility model pressure cuffs nail 3, one can be screwed into the pressure cuffs nail 3 of main nail nearside axial aperture in marrow, and nail tail, with the head of a nail 3.1, is followed closely the entire length that can shorten or extend swollen pinning in pressurization marrow of the present utility model by rotation pressure cuffs.
Shown in Fig. 6 and Fig. 7.For the structural representation of this utility model tail end nail-plate 4, it is arc shape board, and the dissection profile of profile and olecroanon or fibula external malleolus matches, on tail end nail-plate, have can for pressure cuffs nail through open bore 4.1.Can push tail end nail-plate and the identical also pressurization mutually of fracture site by screwing pressure cuffs nail, reach the reduction of the fracture and stable fixation.It is specifically made: choose 0.1～0.2 millimeter of thickness, the stainless steel materials of 10 × 15 millimeters, by design shape cutting, the open bore 4.1 of machining center, made identical arc shape according to what learn by the person's of executing olecroanon or fibula external malleolus tip shapes Laos, obtain tail end nail-plate.
Design principle of the present utility model: mechanical analysis shows, in the time that longitudinal violence occurs, conventionally forms compressive stress in a side of long bone, and opposite side forms tensile stress.When stress is greater than the strength degree that skeleton can bear, long bone is just fractured.Utilize the swollen pinning fixture of the interior pressurization of a kind of medullary cavity in long bone, to form centrality tension force and fix, can better reach the fixing biomechanics of long tubular bone fracture stable.
Operation process of the present utility model is: the closed reduction of first fracturing under C shape arm machine perspective, and temporary fixed with reduction forceps.Then at olecroanon place or fibula external malleolus tip do the little otch of 1.5cm, in olecroanon tip or the boring of fibula external malleolus tip, insert main nail in marrow along ulna or the fibula longitudinal axis.In rotation, swollen screw makes the distally wing sheet distending of main nail in marrow and is closely embedded on ulna or fibula inwall.Nail on and place tail end nail-plate in pressure cuffs, by screwing pressure cuffs nail, push tail end nail-plate, the mutual embedding of the far and near broken ends of fractured bone that makes to fracture is pressed.Perform the operation complete.
This utility model is by main nail 1, interior swollen screw 2, pressure cuffs nail 3 in marrow, and the force action of tail end nail-plate 4, can effectively fix the outer fracture of ankle of olecranal fracture and fibula, improves operation quality, really for patient has brought Gospel.
The various embodiments described above can not depart from some variations in addition under scope of the present utility model, thus above explanation comprises and accompanying drawing shown in structure should be considered as exemplary, but not the protection domain of applying for a patent in order to limit this utility model.
Claims (8)
1. a swollen pinning in pressurization marrow, is characterized in that including:
Main nail in a marrow, in this marrow, the mobile jib of main nail is with hollow hole, in marrow, the near-end of main nail is offered the axial bore connecing with pressure cuffs oncomelania, the distal head of main nail is one group and ordered about and the lobe formula wing sheet that outwards opens by interior support force in marrow, on the outer lateral body of each wing sheet with at least two most advanced and sophisticated swords;
Swollen screw in one, struts one group of wing sheet of main nail distal end portion in marrow by screwing this interior swollen screw;
One can be screwed in marrow in main nail near-end axial bore and afterbody with the pressure cuffs nail of the head of a nail, the screw-in of following closely by this pressure cuffs and screw out the entire length with swollen pinning in the pressurization marrow that stretches;
An arcuation tail end nail-plate, on this tail end nail-plate, offer for pressure cuffs nail through open bore, be against and be applied on body by the head of a nail of the pressure cuffs nail afterbody after screwing.
2. swollen pinning in pressurization marrow as claimed in claim 1, is characterized in that: the inner side of described wing sheet initial part is threaded, and the proximal section of described interior swollen screw has the screw thread that can mutually be spirally connected with wing sheet female thread.
3. swollen pinning in pressurization marrow as claimed in claim 1, is characterized in that: the most advanced and sophisticated sword on the outer lateral body of described wing sheet is opened on its distal head.
4. swollen pinning in pressurization marrow as claimed in claim 1, is characterized in that: on the outer lateral body of each wing sheet of its distal head with 2 to 6 most advanced and sophisticated swords.
5. swollen pinning in pressurization marrow as claimed in claim 1, is characterized in that: in the time that the quantity of one group of wing sheet is less than 3, the most advanced and sophisticated sword on the outer lateral body of described wing sheet is offered as biserial.
6. swollen pinning in pressurization marrow as claimed in claim 1, it is characterized in that: the arc of described arcuation tail end nail-plate is with identical by the person's of executing olecroanon or fibula external malleolus tip shapes, when operation, be against by the person's of executing olecroanon or fibula external malleolus tip place by the head of a nail of the pressure cuffs nail afterbody after screwing.
7. swollen pinning in pressurization marrow as claimed in claim 1, is characterized in that: in described marrow, main nail is made up of 316 medical stainless steel materials.
8. swollen pinning in pressurization marrow as claimed in claim 1, is characterized in that: the thickness of described wing sheet is 1 ± 0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320840286.5U CN203662885U (en) | 2013-12-18 | 2013-12-18 | Compression intramedullary expansion locking nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320840286.5U CN203662885U (en) | 2013-12-18 | 2013-12-18 | Compression intramedullary expansion locking nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203662885U true CN203662885U (en) | 2014-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320840286.5U Withdrawn - After Issue CN203662885U (en) | 2013-12-18 | 2013-12-18 | Compression intramedullary expansion locking nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203662885U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103610490A (en) * | 2013-12-18 | 2014-03-05 | 刘杰 | Pressurized intramedullary expanding interlocking screw and manufacturing method thereof |
-
2013
- 2013-12-18 CN CN201320840286.5U patent/CN203662885U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103610490A (en) * | 2013-12-18 | 2014-03-05 | 刘杰 | Pressurized intramedullary expanding interlocking screw and manufacturing method thereof |
| CN103610490B (en) * | 2013-12-18 | 2016-08-17 | 刘杰 | Swollen pinning and preparation method thereof in a kind of pressurization marrow |
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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: 20140625 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |