CN212066843U - Tibia inverted intramedullary nail convenient to fix - Google Patents
Tibia inverted intramedullary nail convenient to fix Download PDFInfo
- Publication number
- CN212066843U CN212066843U CN202020418616.1U CN202020418616U CN212066843U CN 212066843 U CN212066843 U CN 212066843U CN 202020418616 U CN202020418616 U CN 202020418616U CN 212066843 U CN212066843 U CN 212066843U
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- China
- Prior art keywords
- nail
- nail body
- cavity
- inverted
- intramedullary nail
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- 210000002303 tibia Anatomy 0.000 title claims abstract description 27
- 229910010380 TiNi Inorganic materials 0.000 claims description 4
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 210000000988 bone and bone Anatomy 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 8
- 208000010392 Bone Fractures Diseases 0.000 description 4
- 206010017076 Fracture Diseases 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 208000004367 Tibial Fractures Diseases 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 108010048734 sclerotin Proteins 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 210000000544 articulatio talocruralis Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 210000001699 lower leg Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 206010043827 tibia fracture Diseases 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
Images
Abstract
The utility model discloses an intramedullary nail is invertd to shin bone convenient to it is fixed, including the nail body, impel screw and set screw, impel the afterbody of screw installation at the nail body, set screw link up installs in the threaded hole on the nail body, the nail body is the cylinder and is provided with the cavity along its length direction, the entry of cavity is located the afterbody of the nail body, nail body side evenly is provided with a plurality of first recesses that communicate with the cavity, install the spring in the cavity in proper order, prevent changeing post and push rod, all with be provided with a plurality of second recesses that correspond with first recess on preventing changeing the lateral wall of post, slidable mounting has outside bellied flexure strip in the second recess, the flexure strip part stretches out outside first recess 4. The tibia inverted intramedullary nail plays a pre-tightening role in an operation, cannot easily rotate in a medullary nail channel, is convenient for an operator to align and arrange a fixing screw hole matched with a threaded hole in a nail body on a bone, and can play a good anti-rotation role after the operation and under the condition of timely bearing load after the operation.
Description
Technical Field
The utility model relates to the technical field of medical equipment, concretely relates to intramedullary nail is invertd to shin bone convenient to it is fixed.
Background
In recent years, with the development of society, the increase of vehicle, building and mining industries, the increase of traffic accidents and accidents, the tibia fracture has a trend of rising obviously, and an ideal treatment method is to maintain the ideal restoration and fixation of the fracture and recover the joint movement and the load bearing function of the lower limb as soon as possible.
In the surgical operation of fracture treatment, an intramedullary nail, which is an implant with good biocompatibility and high strength, is embedded in the medullary cavity at the far end and the near end of a broken bone. Not only can achieve the purpose of connecting and fixing the fractured ends, but also can avoid the pain of external fixation for patients, and can carry out functional exercise in the early stage of medical treatment, so the intramedullary nail is widely applied to clinical practice. The tibial intramedullary nail is an intramedullary nail applied to tibial fracture.
At present, quincunx needles or intramedullary nails fixed by bone screws are mostly adopted for internal fixation for treating tibial fractures, plays a role in fixing the fracture to a certain extent, which are all accessed from the near end, and tibial intramedullary nails with the tibia reversed are lacked in the market, i.e., a tibial intramedullary nail that is driven into the tibial plateau from the medial malleolus, from a distal approach, and the existing intramedullary nail is an interlocking intramedullary nail, and therefore, in the case of postoperative loads on the patient, it is subject to torsion in the medullary cavity, the fixation is not very stable, moreover, in addition to the intramedullary nails which require bone screw fixation, when in use, the intramedullary nail is required to be stabilized all the time and can not be rotated in the medullary nail channel, thus influencing the opening of the bone screw channel aligned with the tibia, these intramedullary nails are cumbersome to access, have poor stabilization effect, more open holes, great damage to bone and poor use effect.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an intramedullary nail is invertd to shin bone convenient to it is fixed to solve to lack the shin bone and invert the intramedullary nail, and conventional intramedullary nail goes into the way trouble, and firm effect is not good, shifts easily, and the trompil is more, and is great to the sclerotin damage, the not good problem of result of use.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model provides an intramedullary nail is invertd to shin bone convenient to it is fixed, includes the nail body, impels screw and set screw, impel the screw to install the afterbody of the nail body, set screw link up to be installed threaded hole on the nail body, the nail body is the cylinder and is provided with the cavity along its length direction, the entry of cavity is located the afterbody of the nail body, nail body side evenly be provided with a plurality ofly with the first recess of cavity intercommunication, install the spring in proper order in the cavity, prevent rotary column and push rod, prevent on the lateral wall of rotary column all with be provided with a plurality ofly with the second recess that first recess corresponds, slidable mounting has outside bellied flexure strip in second recess 8, the flexure strip part stretches out first recess is 4 outer.
The further technical scheme is as follows: the upper surface of the elastic sheet is provided with an arc-shaped bulge and tightly propped against the inner surfaces of the two ends of the first groove 4.
The further technical scheme is as follows: circular bulges are arranged on two sides of the end part of the elastic sheet, and sliding grooves used for sliding of the circular bulges are arranged on two sides of the second groove.
The further technical scheme is as follows: the elastic sheet is made of TiNi memory alloy material.
The further technical scheme is as follows: the nail body is the polygon cylinder, and the edge carries out the chamfer and handles.
The further technical scheme is as follows: the cross sections of the cavity and the anti-rotation column are both set to be polygons matched with the cross section of the nail body.
The further technical scheme is as follows: the first grooves are arranged corresponding to the surfaces of the side faces of the nail body one by one.
The further technical scheme is as follows: the head of the nail body is provided with a cone, and the cone is flat.
Compared with the prior art, the utility model discloses can reach one of following beneficial effect at least:
1. the utility model provides an intramedullary nail is invertd to shin bone convenient to it is fixed, through going into the way from the distal end in the setting, the intramedullary nail is invertd to the shin bone of following the ankle joint and squeezing into tibial plateau, can make things convenient for the way more, and reduce the operation wound, set up first recess in the side of the nail body in addition, and the internal cavity that sets up of nail, installation spring in the cavity, prevent changeing post and push rod, can stretch out the part outside first recess through preventing changeing the post on the flexure strip, this part chucking is in medullary nail way, play the pretension effect in the operation, the shin bone is invertd the intramedullary nail and can not rotate easily in medullary nail way, the operator of being convenient for sets up the screw hole complex set screw hole with the nail body on the sclerotin counterpointing, simultaneously after the operation, also can be after the operation, under the timely condition, also can play fine.
2. The elastic sheet upper surface is the arc protruding and supports the internal surface at tight first recess both ends, on the one hand in order to reduce the elastic sheet to irritating of medullary, on the other hand supports tight first recess and plays stabilizing effect, reduce and prevent rocking of rotary column, the nail body is the polygon cylinder because medullary nail way is circular, can be more stable install reduce the rotation in medullary nail way, prevent that the shin bone from inverting the intramedullary nail position and changing, be provided with the flat cone at nail body head, the convenient promotion, and reduce the rotation when promoting.
Drawings
Fig. 1 is a schematic structural view of the tibia inverted intramedullary nail convenient for fixation of the present invention.
Fig. 2 is a schematic structural view of the nail body of fig. 1 according to the present invention.
Fig. 3 is a schematic structural view of the spring, the anti-rotation post and the push rod of fig. 1 according to the present invention.
Fig. 4 is a schematic structural view of the elastic sheet of fig. 1 according to the present invention.
Reference numerals: 1. a nail body; 2. advancing the screw; 3. a set screw; 4. a first groove; 5. a spring; 6. a rotation prevention post; 7. a push rod; 8. a second groove; 9. an elastic sheet; 10. a cone; 11. a threaded bore.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1:
embodiment 1 referring to one embodiment shown in fig. 1, 2 and 3, a tibial inverted intramedullary nail for facilitating fixation comprises a shank 1, a set screw 2 and a set screw 3, the propelling screw 2 is arranged at the tail part of the nail body 1, the fixing screw 3 is arranged in a threaded hole 11 on the nail body 1 in a penetrating way, the nail body 1 is a cylinder and is provided with a cavity along the length direction, the inlet of the cavity is positioned at the tail part of the nail body 1, a plurality of first grooves 4 communicated with the cavity are uniformly arranged on the side surface of the nail body 1, a spring 5, an anti-rotation column 6 and a push rod 7 are sequentially arranged in the cavity, the side walls of the anti-rotation columns 6 are provided with a plurality of second grooves 8 corresponding to the first grooves 4, an elastic sheet 9 protruding outwards is slidably mounted in the second groove 8, and the elastic sheet 9 partially extends out of the first groove 4.
The tibia inverted intramedullary nail: the utility model provides a tibia inverted intramedullary nail which can enter from the far end and be driven into a tibia platform from the medial malleolus, a tibia medullary nail channel is arranged on the medial malleolus by a bone drill, a nail body 1 is driven into the tibia medullary nail channel by an auxiliary medical apparatus, a fixing hole is arranged on the tibia, a fixing screw 3 passes through the fixing hole and is screwed into a screw hole 11 on the nail body 1, a propelling screw 2 is arranged at the tail part of the nail body 1, the intramedullary nail is convenient to push and pull out in the medullary nail channel, in addition, the fixing screw is also used for accommodating and releasing an elastic sheet 9 on a rotation-preventing column 6, the tibia inverted intramedullary nail is more convenient to enter the channel and reduces the operation trauma, the nail body 1 is a cylinder and is provided with a cavity along the length direction, the inlet of the cavity is positioned at the tail part of the nail body 1, the side surface of the nail body 1 is uniformly provided with a plurality of first grooves 4 communicated with the cavity, a, (the push rod 7 is made of soft material with compatible tissue), the push rod 7 is pushed by screwing the propelling screw 2 into the tail part of the nail body 1, the anti-rotation column 6 is contracted in the cavity, after the medullary nail track of the tibia is driven into the inverted intramedullary nail of the tibia, the propelling screw 2 is screwed out, due to the elastic action of the spring 5, the anti-rotation column 6 can move to the first groove 4, the part, extending out of the first groove 9, of the elastic sheet 9 on the anti-rotation column 6 is tightly clamped in the medullary nail track, the pre-tightening effect in the operation is achieved, the inverted intramedullary nail of the tibia cannot easily rotate, the fixed screw hole matched with the threaded hole 11 on the nail body 1 can be conveniently aligned on the bone, and meanwhile, after the operation, under the condition of timely bearing load, the anti-rotation effect can be achieved well.
Example 2:
on the basis of the above embodiment 1, in embodiment 2, referring to fig. 4, as an embodiment, the upper surface of the elastic piece 9 is provided with an arc-shaped protrusion and abuts against the inner surfaces of the two ends of the first groove 4.
The upper surface of flexure strip 9 sets up to the arc protruding, and supports tightly on the internal surface at first recess 4 both ends, and the arc is protruding to reduce the irritation of flexure strip 9 to medulla on the one hand, and on the other hand flexure strip 9 supports tightly first recess 4 and can play the stabilizing effect of self, reduces rocking of preventing rotary column 6, and the operator of being convenient for performs the operation.
Furthermore, circular bulges are arranged on two sides of the end part of the elastic sheet 9, and sliding grooves used for the sliding of the circular bulges are arranged on two sides of the second groove 8.
The both ends of flexure strip 9 are passed through circular arch and are removed in the spout, stable in structure, and it is convenient to slide.
Further, the elastic sheet 9 is made of a TiNi memory alloy material.
The elastic sheet 9 is accommodated in the cavity and is likely to deform, the TiNi memory alloy is compatible with human tissues and can be restored at a certain temperature in a human body, and the use effect is good.
Example 3:
on the basis of the above embodiment, embodiment 3 shows an embodiment in which the nail body 1 is a polygonal cylinder, and the edges are chamfered.
The nail body 1 is a polygonal cylinder, and the edge is chamfered. The nail body 1 is the polygon cylinder because medullary nail way is circular, and the nail body 1 of polygon cylinder can be more stable install reduce the rotation in medullary nail way, prevents that the shin bone from inverting intramedullary nail position and changing, and the chamfer is handled for reducing and stimulates.
Example 4:
on the basis of the above embodiment, the embodiment 4 shows an embodiment, and the cross sections of the cavity and the anti-rotation column 6 are both set to be polygonal matched with the cross section of the nail body 1.
The cross sections of the cavity and the anti-rotation column 6 are all set to be polygons matched with the cross section of the nail body 1, so that the anti-rotation column 6 is prevented from rotating in the cavity and is matched with a plurality of surfaces on the side surface of the nail body 1.
Further, the first grooves 4 are arranged corresponding to the surfaces of the side surfaces of the nail body 1 one by one.
The number of the first grooves 4 is consistent with that of a plurality of surfaces on the side surface of the nail body 1, so that the elastic sheet can play a maximum stabilizing role in medullary nail channels,
example 5:
on the basis of the above embodiment, the embodiment 5 shows an embodiment, the head of the nail body 1 is provided with a cone 10, and the cone 10 is flat.
The head of the nail body 1 is provided with a flat cone 10, which is convenient for the nail body 1 to push and reduces the nail body 1 to rotate in the medullary nail channel when pushing.
The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (8)
1. The utility model provides a shin bone inversion intramedullary nail convenient to it is fixed which characterized in that: comprises a nail body (1), a propelling screw (2) and a fixing screw (3), wherein the propelling screw (2) is arranged at the tail part of the nail body (1), the fixing screw (3) is arranged on the nail body (1) in a penetrating way, the nail body (1) is a cylinder and is provided with a cavity along the length direction thereof, the inlet of the cavity is positioned at the tail part of the nail body (1), a plurality of first grooves (4) communicated with the cavity are uniformly arranged on the side surface of the nail body (1), a spring (5), an anti-rotation column (6) and a push rod (7) are sequentially arranged in the cavity, the side walls of the anti-rotation columns (6) are respectively provided with a plurality of second grooves (8) corresponding to the first grooves (4), an elastic sheet (9) which protrudes outwards is arranged in the second groove (8) in a sliding way, the elastic piece (9) partially extends out of the first groove (4).
2. The tibial inverted intramedullary nail for facilitating fixation of claim 1, wherein: the upper surface of the elastic piece (9) is provided with an arc-shaped bulge and tightly propped against the inner surfaces of the two ends of the first groove (4).
3. The tibial inverted intramedullary nail for facilitating fixation of claim 1, wherein: the elastic sheet (9) is made of TiNi memory alloy.
4. The tibial inverted intramedullary nail for facilitating fixation of claim 1, wherein: circular bulges are arranged on two sides of the end part of the elastic sheet (9), and sliding grooves used for sliding of the circular bulges are arranged on two sides of the second groove (8).
5. The tibial inverted intramedullary nail for facilitating fixation of claim 1, wherein: the nail body (1) is a polygonal cylinder, and chamfering processing is carried out on edges.
6. The tibial inverted intramedullary nail for facilitating fixation of claim 1, wherein: the cross sections of the cavity and the anti-rotation column (6) are both set to be polygons matched with the cross section of the nail body (1).
7. The tibial inverted intramedullary nail for facilitating fixation of claim 1, wherein: the first grooves (4) are arranged corresponding to the surfaces of the side faces of the nail body (1) one by one.
8. The tibial inverted intramedullary nail for facilitating fixation of claim 1, wherein: the head of the nail body (1) is provided with a cone (10), and the cone (10) is flat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020418616.1U CN212066843U (en) | 2020-03-27 | 2020-03-27 | Tibia inverted intramedullary nail convenient to fix |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020418616.1U CN212066843U (en) | 2020-03-27 | 2020-03-27 | Tibia inverted intramedullary nail convenient to fix |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212066843U true CN212066843U (en) | 2020-12-04 |
Family
ID=73564647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020418616.1U Expired - Fee Related CN212066843U (en) | 2020-03-27 | 2020-03-27 | Tibia inverted intramedullary nail convenient to fix |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212066843U (en) |
-
2020
- 2020-03-27 CN CN202020418616.1U patent/CN212066843U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201204 |
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| CF01 | Termination of patent right due to non-payment of annual fee |