CN105559870A - Elastic interlocking intramedullary nail - Google Patents
Elastic interlocking intramedullary nail Download PDFInfo
- Publication number
- CN105559870A CN105559870A CN201610073844.8A CN201610073844A CN105559870A CN 105559870 A CN105559870 A CN 105559870A CN 201610073844 A CN201610073844 A CN 201610073844A CN 105559870 A CN105559870 A CN 105559870A
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- CN
- China
- Prior art keywords
- thread segment
- rivet nut
- part thread
- threads section
- front threads
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7208—Flexible pins, e.g. ENDER pins
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7216—Intramedullary pins, nails or other devices for bone lengthening or compression
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7233—Intramedullary pins, nails or other devices with special means of locking the nail to the bone
- A61B17/725—Intramedullary pins, nails or other devices with special means of locking the nail to the bone with locking pins or screws of special form
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7291—Intramedullary pins, nails or other devices for small bones, e.g. in the foot, ankle, hand or wrist
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses an elastic interlocking intramedullary nail and belongs to medical instruments used in the department of orthopaedics. One end of a nail body is an integrally formed flat triangular edge body, and the other end of the nail body is an integrally formed right circular cone body. A front threaded section is also arranged, and a middle threaded section is arranged in the middle of the nail body. The diameter of the front threaded section is identical with that of the middle threaded section and larger than that of the nail body. The thread pitch of the front threaded section is identical with or different from that of the middle threaded section. The elastic interlocking intramedullary nail has the advantages that surgery can be conducted without an incision formed or with a microinvasive cut formed, closed nailing is adopted, no scar is left, the original beauty of the clavicle on the body surface is maintained, operation is easy, second operation is avoided, bone healing time is shortened, treatment cost is effectively reduced, and pains of patients are effectively relieved; meanwhile, when the two sections of a bone fracture portion are connected by the nail, anatomical joint reduction of the two sections of the bone fracture portion can be locked, the bone fracture portion can be stretched and pressurized, fracture healing is promoted, the stability of the bone fracture portion is improved, the healing quality of the bone fracture portion is improved, and the failure rate of bone fracture fixation is reduced.
Description
Technical field
The present invention relates to fractures apparatus, particularly relate to a kind of elastic webbing lock intramedullary nail.
Background technology
Current intramedullary nail with lock fixes with interlocking form, and minimum diameter 7mm, is not suitable for little tubular bone fracture.
The fracture such as little tubular bone fracture, particularly clavicle, rib, ulna, radius, fibula, brothers' bone is comparatively common fracture.Owing to damaging comparatively large, to need two operations situation to the Therapeutic Method of this kind of fracture patient in the past, patient need bear twice risk and misery, and increases the financial burden of once performing the operation.Applicant has applied for " little tubular bone fractures flexible intramedullary nail " patent of invention in 2009 for this reason, the patent No. is 2007200995180, this patent of invention is particularly suitable for clavicle, rib, ulna, radius, fracture of fibula treatment, and can anatomical reduction be reached, simple to operate when can make operation, otch is little, do not need special instrument, do not peel off periosteum, the most important thing is that great majority fracture can take closed reduction internal fixtion, but also secondary can be avoided to take out internal fixation operation, cure rate improves, and effectively reduces the misery of medical expense and patient.Because skin does not have otch spot, do not affect the appearance, particularly do not affect the clavicle after clavicular fracture beautiful.
But, through Clinical practice in a few years, find that it exists following defect: in its integrated tapping screw thread section in normal cone bodily form tip, though can prevent fracture end from automatically moving back nail, but not there is anti-cripetura and stretch capability, the phenomenon that fracture end jumps back and forth can not be avoided.Meanwhile, can not meet for different fracture condition, carry out the fixing of distraction reduction or loaded reset.Be unfavorable for healing and the nursing of fracture surgery, affect the healing effect of fracture site, Unstable internal fixation rate is high, can not be at once movable after Shoulder surgery.
Summary of the invention
Main purpose of the present invention is the above-mentioned shortcoming overcoming existing product existence, and a kind of elastic webbing lock intramedullary nail is provided, not only there is perform the operation not otch or Wicresoft's mouth, closed nailing, do not stay speckle trace, the clavicle maintaining original body surface is beautiful, operation technique is simple, avoid carrying out second operation, bone healing time shortens, the feature of the misery of effective reduction medical expense and patient, when the two ends of fracture link together by it simultaneously, the dissection docking that can lock fracture two sections resets, strut and pressurized fracture position, promote union of fracture, increase fracture site stability, promote the healing quality of fracture, reduce the mortality of fracture fixation.
The object of the invention is to be realized by following technical scheme:
A kind of technical scheme is: a kind of elastic webbing lock intramedullary nail, comprises rivet nut; Described rivet nut is cylindrical, and its one end is the triangular cutting edge body of one-body molded flat, and the other end is integrated positive round cone, and is provided with front threads section, it is characterized in that: the interlude of described rivet nut is provided with middle part thread segment; Front threads section is identical with the diameter of middle part thread segment; The diameter of front threads section and middle part thread segment is greater than the diameter of rivet nut; The pitch of front threads section is identical with the pitch of middle part thread segment.
Another kind of technical scheme is: a kind of elastic webbing lock intramedullary nail, comprises rivet nut; Described rivet nut is cylindrical, and its one end is the triangular cutting edge body of one-body molded flat, and the other end is integrated positive round cone, and is provided with front threads section, it is characterized in that: the interlude of described rivet nut is provided with middle part thread segment; Front threads section is identical with the diameter of middle part thread segment; The diameter of front threads section and middle part thread segment is greater than the diameter of rivet nut; The pitch of front threads section is greater than the pitch of middle part thread segment.
Another kind of technical scheme is: a kind of elastic webbing lock intramedullary nail, comprises rivet nut; Described rivet nut is cylindrical, and its one end is the triangular cutting edge body of one-body molded flat, and the other end is integrated positive round cone, and is provided with front threads section, it is characterized in that: the interlude of described rivet nut is provided with middle part thread segment; Front threads section is identical with the diameter of middle part thread segment; The diameter of front threads section and middle part thread segment is greater than the diameter of rivet nut; The pitch of front threads section is less than the pitch of middle part thread segment.
The length of described rivet nut is 10-50cm, and the diameter of rivet nut is 1.0-5.0mm.
Described front threads section and middle part thread segment length are 2-30mm.
The spacing of described front threads section and middle part thread segment is 0.5-45cm.
Described front threads section and middle part thread segment are cancellous threads, and thread depth is 0.2-1.5mm.
The pitch of described front threads section and middle part thread segment is 1.0-5.0mm.
Advantage of the present invention and beneficial effect are:
This elastic webbing lock intramedullary nail, adopts 317L rustless steel or titanium alloy material to make, is applicable to the fractures such as clavicle, rib, ulna, radius, fibula, brothers' bone.
Due to little tubular bone, particularly clavicle, rib, the curved tubulose of its pulp cavity, therefore intramedullary pin should have certain elasticity, just can reach effect of complete pulp cavity internal fixtion.Different according to therapentic part, the length of the rivet nut of this elastic webbing lock intramedullary nail is 10-50cm, and the diameter of rivet nut is 1.0-5.0mm; The length of front threads section and middle part thread segment is 2-30mm; The spacing of front threads section and middle part thread segment is 0.5-45cm; Front threads section and middle part thread segment are cancellous threads, and thread depth is 0.2-1.5mm; The pitch of front threads section and middle part thread segment is 1.0-5.0mm; Rivet nut makes its overall structure have certain elasticity by material itself and structural design, thus can adapt to the anatomical features of little tubular bone.
In operation, bone trabecula in clavicle and rib pulp cavity, makes thinner elastic webbing lock intramedullary nail body obtain good fixing basis.
The tip of the triangular cutting edge body of flat has and is beneficial to when retrograde drift bolt the effect that nature passes cortical bone and skin.
The positive round cone of the rivet nut other end can make rivet nut comply with little tubular bone medullary cavity wall radian and not easily wear out cortical bone.
Its front threads section and middle part thread segment are tapping screw thread, and the diameter of thread segment is greater than the diameter of rivet nut, but at the bottom of spiral shell, diameter is identical with rivet nut, and rivet nut can be made easily to screw in and screw out, and the intensity of the rivet nut of thread segment is unaffected.
Operation technique is simple, can not otch or Wicresoft's mouth closed nailing, do not stay spot, the anatomical reduction of the fracture sites such as clavicle, rib, ulna, radius, fibula, brothers' bone can be reached.Especially fix the fracture of clavicle, the anatomic form of clavicle can be recovered, maintain former clavicle beautiful, do not need special instrument, and do not peel off periosteum, reduce patient suffering.
The interlude of rivet nut is provided with middle part thread segment, and adopts different pitch, and what can reset to the docking reset of fracture, the reset that stretches, compression is fixed.
According to state and the needs of fracture, when fracture site adopts docking to reset, front threads section can be adopted identical with the diameter of middle part thread segment, the pitch elastic webbing lock intramedullary nail identical with the pitch of middle part thread segment of front threads section, because front threads section and middle part thread segment are to the fixation at fracture two ends, it can make two fracture end fixations, can not jump back and forth, increase fracture site stability, promote the healing quality of fracture, reduce the mortality of fracture fixation.
When fracture site adopts stretching to reset, front threads section can be adopted identical with the diameter of middle part thread segment, the pitch of front threads section is less than the elastic webbing lock intramedullary nail of the pitch of middle part thread segment, due to the pitch that front threads section is different with middle part thread segment, under the rotating speed that rivet nut is same, fracture two ends produce different displacements, and the displacement of front end is less than the displacement of rear end, thus make fracture site be in stretching replacement and fixation state, recover and maintain original form.Increase fracture site stability, promote the healing quality of fracture, reduce the mortality of fracture fixation.
When fracture site adopts compression to reset, front threads section can be adopted identical with the diameter of middle part thread segment, the pitch of front threads section is greater than the elastic webbing lock intramedullary nail of the pitch of middle part thread segment, due to the pitch that front threads section is different with middle part thread segment, under the rotating speed that rivet nut is same, fracture two ends produce different displacements, the displacement of front end is greater than the displacement of rear end, thus make fracture site be in compression replacement and fixation state, recover and maintain original form, increase fracture site stability, promote the healing quality of fracture, reduce the mortality of fracture fixation.
Postoperative patients does not need the treatment that is hospitalized for observation, and suffering limb can be freely movable.For the patient of clavicular fracture, Post operation at once can activity shoulder joint.
Adopt this elastic webbing lock intramedullary nail to carry out the replacement and fixation of fracture site, do not need secondary to get the operation of internal fixtion, remove second operation from, save medical expense.
Accompanying drawing illustrates:
Fig. 1 is structure schematic front view of the present invention.
Fig. 2 is that schematic diagram is looked on a structure left side of the present invention.
Fig. 3 is that schematic diagram is looked on the structure right side of the present invention.
Fig. 4 is using state schematic diagram of the present invention.
Wherein: 1-rivet nut, 2-sword body, 3-positive round cone, 4-front threads section, thread segment in the middle part of 5-, 6-fractures front end, and 7-fractures rear end.
Detailed description of the invention
Embodiment: as Figure 1-4, for clavicle elastic webbing lock intramedullary nail, comprises rivet nut 1, and rivet nut 1 is cylindrical, and length is 25.5cm, and diameter is 2mm; Its one end is formed in one the triangular cutting edge body 2 of flat, and the other end of rivet nut 1 is integrated positive round cone 3, and is provided with front threads section 4, this front threads section 4 is self tapping cancellous threads, its length is 15mm, and the height of screw thread is 0.5mm, and the pitch of front threads section 4 is 1.0mm; The interlude of rivet nut 1 is provided with middle part thread segment 5, and in the middle part of this, thread segment 5 is provided with self tapping cancellous threads, and in the middle part of this, the length of thread segment 5 is 15mm, and thread depth is 0.5mm, and the pitch of middle part thread segment 5 is 1.0mm; The spacing of front threads section 4 and middle part thread segment 5 is 8cm.
When the pitch of middle part thread segment 5 is 1.0-0.3mm, the pitch of front threads section 4 is greater than the pitch of middle part thread segment 5, and may be used for the fracture site of fixing loaded reset, the pressurization of such as transverse fracture is fixed.
When the pitch of middle part thread segment 5 is 1.0+0.3mm, the pitch of front threads section 4 is less than the pitch of middle part thread segment 5, and may be used for the fracture site of fixing distraction reduction, the distraction reduction of such as comminuted fracture is fixed.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (8)
1. an elastic webbing lock intramedullary nail, comprises rivet nut; Described rivet nut is cylindrical, and its one end is the triangular cutting edge body of one-body molded flat, and the other end is integrated positive round cone, and is provided with front threads section, it is characterized in that: the interlude of described rivet nut is provided with middle part thread segment; Front threads section is identical with the diameter of middle part thread segment; The diameter of front threads section and middle part thread segment is greater than the diameter of rivet nut; The pitch of front threads section is identical with the pitch of middle part thread segment.
2. an elastic webbing lock intramedullary nail, comprises rivet nut; Described rivet nut is cylindrical, and its one end is the triangular cutting edge body of one-body molded flat, and the other end is integrated positive round cone, and is provided with front threads section, it is characterized in that: the interlude of described rivet nut is provided with middle part thread segment; Front threads section is identical with the diameter of middle part thread segment; The diameter of front threads section and middle part thread segment is greater than the diameter of rivet nut; The pitch of front threads section is greater than the pitch of middle part thread segment.
3. an elastic webbing lock intramedullary nail, comprises rivet nut; Described rivet nut is cylindrical, and its one end is the triangular cutting edge body of one-body molded flat, and the other end is integrated positive round cone, and is provided with front threads section, it is characterized in that: the interlude of described rivet nut is provided with middle part thread segment; Front threads section is identical with the diameter of middle part thread segment; The diameter of front threads section and middle part thread segment is greater than the diameter of rivet nut; The pitch of front threads section is less than the pitch of middle part thread segment.
4. elastic webbing lock intramedullary nail according to claim 1 or 2 or 3, it is characterized in that: the length of described rivet nut is 10-50cm, the diameter of rivet nut is 1.0-5.0mm.
5. elastic webbing lock intramedullary nail according to claim 1 or 2 or 3, is characterized in that: described front threads section and middle part thread segment length are 2-30mm.
6. elastic webbing lock intramedullary nail according to claim 1 or 2 or 3, is characterized in that: the spacing of described front threads section and middle part thread segment is 0.5-45cm.
7. elastic webbing lock intramedullary nail according to claim 1 or 2 or 3, it is characterized in that: described front threads section and middle part thread segment are cancellous threads, thread depth is 0.2-1.5mm.
8. elastic webbing lock intramedullary nail according to claim 1 or 2 or 3, is characterized in that: the pitch of described front threads section and middle part thread segment is 1.0-5.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610073844.8A CN105559870A (en) | 2016-02-03 | 2016-02-03 | Elastic interlocking intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610073844.8A CN105559870A (en) | 2016-02-03 | 2016-02-03 | Elastic interlocking intramedullary nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105559870A true CN105559870A (en) | 2016-05-11 |
Family
ID=55870911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610073844.8A Pending CN105559870A (en) | 2016-02-03 | 2016-02-03 | Elastic interlocking intramedullary nail |
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| CN (1) | CN105559870A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201055417Y (en) * | 2007-06-18 | 2008-05-07 | 丹阳市中医院 | Exterior supporting structure for thighbone intertrochanteric fracture |
| CN201131789Y (en) * | 2007-12-29 | 2008-10-15 | 王永清 | Elastic intramedullary nail for curing the small tubular bone frature |
| CN201248762Y (en) * | 2008-09-01 | 2009-06-03 | 廖军 | Intramedullary nail device of threads of clavicular tail |
| US20100292695A1 (en) * | 2009-05-15 | 2010-11-18 | Zimmer, Inc. | Threaded, flexible implant and method for threading a curved hole |
| CN201768025U (en) * | 2010-08-13 | 2011-03-23 | 丁亮华 | Clavicle intramedullary nail |
| CN102160815A (en) * | 2010-10-12 | 2011-08-24 | 潘胜兰 | Orthopaedic double-blade needle |
| JP2013052114A (en) * | 2011-09-05 | 2013-03-21 | Kurume Univ | Intramedullary metal fitting for treating fracture of clavicle |
| CN205458990U (en) * | 2016-02-03 | 2016-08-17 | 王永清 | Elastic webbing lock intramedullary nail |
-
2016
- 2016-02-03 CN CN201610073844.8A patent/CN105559870A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201055417Y (en) * | 2007-06-18 | 2008-05-07 | 丹阳市中医院 | Exterior supporting structure for thighbone intertrochanteric fracture |
| CN201131789Y (en) * | 2007-12-29 | 2008-10-15 | 王永清 | Elastic intramedullary nail for curing the small tubular bone frature |
| CN201248762Y (en) * | 2008-09-01 | 2009-06-03 | 廖军 | Intramedullary nail device of threads of clavicular tail |
| US20100292695A1 (en) * | 2009-05-15 | 2010-11-18 | Zimmer, Inc. | Threaded, flexible implant and method for threading a curved hole |
| CN201768025U (en) * | 2010-08-13 | 2011-03-23 | 丁亮华 | Clavicle intramedullary nail |
| CN102160815A (en) * | 2010-10-12 | 2011-08-24 | 潘胜兰 | Orthopaedic double-blade needle |
| JP2013052114A (en) * | 2011-09-05 | 2013-03-21 | Kurume Univ | Intramedullary metal fitting for treating fracture of clavicle |
| CN205458990U (en) * | 2016-02-03 | 2016-08-17 | 王永清 | Elastic webbing lock intramedullary nail |
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| PB01 | Publication | ||
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Application publication date: 20160511 |