CN105395245A - Device for preventing interlocking nail of interlocking intramedullary nail from nail releasing - Google Patents
Device for preventing interlocking nail of interlocking intramedullary nail from nail releasing Download PDFInfo
- Publication number
- CN105395245A CN105395245A CN201510942264.3A CN201510942264A CN105395245A CN 105395245 A CN105395245 A CN 105395245A CN 201510942264 A CN201510942264 A CN 201510942264A CN 105395245 A CN105395245 A CN 105395245A
- Authority
- CN
- China
- Prior art keywords
- nail
- self
- thread
- interlocking
- intramedullary
- 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
- A61B17/7233—Intramedullary pins, nails or other devices with special means of locking the nail to the bone
- A61B17/7241—Intramedullary pins, nails or other devices with special means of locking the nail to the bone the nail having separate elements through which screws pass
-
- 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
- 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
A device for preventing an interlocking nail of an interlocking intramedullary nail from nail releasing comprises an intramedullary nail main nail, wherein an interlocking hole is formed in a side surface at the upper part of the intramedullary nail main nail, internal threads are formed in the interlocking hole, the interlocking nail is matched with the internal threads in the interlocking hole, and external threads are formed in the interlocking nail; and the device provided by the invention has the advantages that the internal threads and the external threads in different types are adopted for matching, so that the external threads can be screwed into the internal threads easily so as to achieve the purpose of preventing nail releasing. The internal threads and the external threads are different in types, gaps existing between the internal threads and the external threads are large, and the driving in of the interlocking nail cannot be influenced by slight deformation of the interlocking intramedullary nail, therefore, not only the problems in the driving in of the interlocking nail can be solved, but also the problem of nail releasing of the interlocking nail can be solved.
Description
Technical field
The present invention relates to technical field of medical instruments, especially relate to one and prevent intramedullary nail with lock self-locking nail from moving back nail.
Background technology
In recent years, intramedullary nail with lock has been widely used in the fracture fixation of elongated tubular, in its operation wound surface little, can closed reduction, fixation, effectively can prevent that the features such as rotations are existing knows together.But intramedullary nail with lock also has some minor issues can cause the failure of Fracture internal fixaiion in design at present.Wherein, self-locking nail moves back nail is exactly one of them.The reason causing self-locking nail to move back nail is that the interlocking hole that intramedullary pin master nails on adopts unthreaded hole design, conveniently self-locking nail is squeezed into, and interlocking hole internal diameter 0.2-0.3mm larger than self-locking nail external diameter, therefore when muscle ligament forced contraction, self-locking nail very easily exits from interlocking hole, causes the failure of Fracture internal fixaiion.The screw thread that processing is identical with self-locking nail on intramedullary pin interlocking hole, can anti-retaining nail.But because self-locking nail external screw thread is generally the odd-pitch screws such as cortical bone screw thread (shallow thread), cancellous threads (deep thread), symmetrical screw thread, need customization special thread cutter, processing cost is high, and when internal and external threads cooperatively interacts, the little self-locking nail that too increases in gap aims at the difficulty squeezed into.
Summary of the invention
For overcoming above-mentioned technical problem, the technical solution used in the present invention is as follows:
One prevents intramedullary nail with lock self-locking nail from moving back nail, comprises the main nail of intramedullary pin, and the main nail upper side of described intramedullary pin is provided with interlocking hole, and interlocking is provided with female thread in hole, and the screw-internal thread fit in self-locking nail and interlocking hole, self-locking nail is provided with external screw thread.
Preferably, the female thread on described interlocking hole is angular thread or trapezoidal thread or rectangular thread.
Preferably, the external screw thread on described self-locking nail is cortical bone screw thread or cancellous threads or symmetrical screw thread.
Preferably, the female thread pitch on described interlocking hole is equal with the external screw thread pitch on self-locking nail.
Preferably, the external screw thread tooth that the female thread tooth on described interlocking hole is wider than on self-locking nail is wide, and therefore external screw thread can easily screw in female thread, thus plays the object of anti-retaining nail.
Preferably, the inner thread mouth on described interlocking hole is provided with spherical chamfering, its objective is as self-locking nail external screw thread and hole screw-internal thread fit provide guiding.
Beneficial effect: adopt the internal and external threads of different types to coordinate.Interlocking hole internal thread pattern can be angular thread, trapezoidal thread, rectangular thread, and self-locking nail external screw thread pattern is cortical bone screw thread (shallow thread), cancellous threads (deep thread), symmetrical screw thread.Female thread pitch is equal with self-locking nail external screw thread pitch, and it is wide that the tooth of female thread is wider than external screw thread tooth, and therefore external screw thread can easily screw in female thread, thus plays the object of anti-retaining nail.Internal and external screw thread adopts dissimilar, and the gap existed in internal and external threads is very large, can not affect squeezing into of self-locking nail because of the slight deformation of intramedullary pin.So both solve the problem that self-locking nail is squeezed into, also solve the problem that self-locking nail moves back nail.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is left view of the present invention;
Fig. 3 is the structural representation of the main nail of intramedullary pin in the present invention.
Detailed description of the invention
As shown in Figure 1, one prevents intramedullary nail with lock self-locking nail from moving back nail, comprises the main nail 1 of intramedullary pin, described intramedullary pin main nail 1 upper side is provided with interlocking hole 2, be provided with female thread in interlocking hole 2, self-locking nail 3 and the screw-internal thread fit in interlocking hole 2, self-locking nail 3 is provided with external screw thread.
Female thread on described interlocking hole 2 is angular thread or trapezoidal thread or rectangular thread.
External screw thread on described self-locking nail 3 is cortical bone screw thread or cancellous threads or symmetrical screw thread.
Female thread pitch on described interlocking hole 2 is equal with the external screw thread pitch on self-locking nail 3.
The external screw thread tooth that female thread tooth on described interlocking hole 2 is wider than on self-locking nail 3 is wide, and therefore external screw thread can easily screw in female thread, thus plays the object of anti-retaining nail, solves again screw-threaded engagement tension and causes self-locking nail to squeeze into the problem of interlocking hole difficulty.
Preferably, the inner thread mouth on described interlocking hole 2 is provided with spherical chamfering, its objective is as self-locking nail external screw thread and hole screw-internal thread fit provide guiding.
Claims (6)
1. one kind prevents intramedullary nail with lock self-locking nail from moving back nail, comprise the main nail of intramedullary pin (1), its feature exists: the main nail of described intramedullary pin (1) upper side is provided with interlocking hole (2), interlocking hole is provided with female thread in (2), self-locking nail (3) and the screw-internal thread fit in interlocking hole (2), self-locking nail (3) is provided with external screw thread.
2. one according to claim 1 prevents intramedullary nail with lock self-locking nail from moving back nail, it is characterized in that: the female thread on described interlocking hole (2) is angular thread or trapezoidal thread or rectangular thread.
3. one according to claim 1 prevents intramedullary nail with lock self-locking nail from moving back nail, it is characterized in that: the external screw thread on described self-locking nail (3) is cortical bone screw thread or cancellous threads or symmetrical screw thread.
4. one according to claim 1 prevents intramedullary nail with lock self-locking nail from moving back nail, it is characterized in that: the female thread pitch on described interlocking hole (2) is equal with the external screw thread pitch on self-locking nail (3).
5. one according to claim 1 prevents intramedullary nail with lock self-locking nail from moving back nail, it is characterized in that: the external screw thread tooth that the female thread tooth on described interlocking hole (2) is wider than on self-locking nail (3) is wide.
6. one according to claim 1 prevents intramedullary nail with lock self-locking nail from moving back nail, it is characterized in that: the inner thread mouth on described interlocking hole (2) is provided with spherical chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510942264.3A CN105395245A (en) | 2015-12-16 | 2015-12-16 | Device for preventing interlocking nail of interlocking intramedullary nail from nail releasing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510942264.3A CN105395245A (en) | 2015-12-16 | 2015-12-16 | Device for preventing interlocking nail of interlocking intramedullary nail from nail releasing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105395245A true CN105395245A (en) | 2016-03-16 |
Family
ID=55461257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510942264.3A Pending CN105395245A (en) | 2015-12-16 | 2015-12-16 | Device for preventing interlocking nail of interlocking intramedullary nail from nail releasing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105395245A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060084999A1 (en) * | 2003-04-09 | 2006-04-20 | Felix Aschmann | Intramedullary nail for femur fracture fixation |
| CN201239191Y (en) * | 2008-08-22 | 2009-05-20 | 闫宏伟 | Intramedullary nail for locking fractured femur |
| US20100057086A1 (en) * | 2008-08-29 | 2010-03-04 | Zimmer, Inc. | Anodized locking plate components |
| CN205411292U (en) * | 2015-12-16 | 2016-08-03 | 贝尔泰克医疗器械江苏有限公司 | Prevent that interlocking nail from moving back area lock intramedullary nail of nail |
-
2015
- 2015-12-16 CN CN201510942264.3A patent/CN105395245A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060084999A1 (en) * | 2003-04-09 | 2006-04-20 | Felix Aschmann | Intramedullary nail for femur fracture fixation |
| CN201239191Y (en) * | 2008-08-22 | 2009-05-20 | 闫宏伟 | Intramedullary nail for locking fractured femur |
| US20100057086A1 (en) * | 2008-08-29 | 2010-03-04 | Zimmer, Inc. | Anodized locking plate components |
| CN205411292U (en) * | 2015-12-16 | 2016-08-03 | 贝尔泰克医疗器械江苏有限公司 | Prevent that interlocking nail from moving back area lock intramedullary nail of nail |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160316 |
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| WD01 | Invention patent application deemed withdrawn after publication |