CN113331932A - Conical screw between ankles - Google Patents
Conical screw between ankles Download PDFInfo
- Publication number
- CN113331932A CN113331932A CN202110696887.2A CN202110696887A CN113331932A CN 113331932 A CN113331932 A CN 113331932A CN 202110696887 A CN202110696887 A CN 202110696887A CN 113331932 A CN113331932 A CN 113331932A
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- screw
- conical
- thread
- screw body
- intercondylar
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- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/864—Pins or screws or threaded wires; nuts therefor hollow, e.g. with socket or cannulated
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B2017/8655—Pins or screws or threaded wires; nuts therefor with special features for locking in the bone
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- 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 a conical inter-ankle screw which is characterized by comprising a screw body, wherein the screw body is conical, the included angle between the side surface of the screw body and an axis is 15-25 degrees, one end of the screw body is set as a thread starting end, the other end of the screw body is a thread terminal, and the joint of the screw body and the thread starting end is spherical; the screw body is provided with a thread extending from a thread starting end to a thread terminal end; the cross-section of screw thread is trapezoidal, and the both sides limit of screw thread is established respectively to be detained the side limit and is taken off the side limit, is equipped with the tooth's socket between two adjacent screw threads, and the bottom surface of tooth's socket is screw body face of cylinder, and the junction of detaining the side limit on, the side limit of taking off and bottom surface sets up the chamfer. The invention has the advantages that the conical design is adopted, so that the conical bone fracture joint is more easily adapted to a conical bone gap with a narrow space, the bone tissue is not damaged, the hollow structure is adopted to reduce the mass burden, the implantation is stable and reliable, and the recovery period of a patient is short.
Description
Technical Field
The invention belongs to the technical field of orthopedic medical instruments, and particularly relates to a conical inter-ankle screw.
Background
Joint instability is caused by damage of joint composition bones, such as fracture, dislocation, ligaments and the like, and joint structure damage (including joint composition bones, ligaments, joint capsules and the like) caused by improper repair or unrepaired repair, causes instability of different degrees and orientations, and is manifested as joint movement disorder, soreness, weakness and the like. Ankle instability is the most common type of ankle injury, and about 35% of patients develop ankle instability after initial ankle sprain. Instability among scaphoid bones, talus bones and calcaneus can cause abnormal stress distribution of joints of lower limbs of a body including ankle and foot force lines, so that the wear of the joint cartilage is aggravated, the joint cartilage is degenerated, osteoarthritis is easy to form along with the progress of the disease, and the physical and mental health and the life quality of a patient are seriously affected. At present, conservative treatment and surgical treatment are generally adopted clinically, ankle joint brake protection is an important means for conservative treatment of unstable ankle joints, joint stability can be effectively improved, and joint proprioception is increased. For patients with unstable ankle joints with "soft legs" and repeated sprains, the ankle brace needs to be worn in a restrained manner. In the prior art, the long-term effect of the operation treatment is not ideal, the recovery period is long, the normal work and life are influenced, and the limited protective tool is needed for auxiliary treatment.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems of unstable joints among scaphoid bones, talus bones and calcaneus bones in the prior art, the problems of unsatisfactory long-term effect, long recovery period, need of limited protective equipment for auxiliary treatment and the like in surgical treatment are solved.
2. Technical scheme
In order to achieve the purpose and achieve the technical effect, the invention adopts the following technical scheme:
a conical inter-ankle screw is characterized by comprising a screw body, wherein the screw body is conical, the included angle between the side surface of the screw body and an axis is 15-25 degrees, one end of the screw body is provided with a thread starting end, the other end of the screw body is provided with a thread terminal, and the joint of the screw body and the thread starting end is spherical; the screw body is provided with a thread extending from a thread starting end to a thread terminal end; the cross section of the thread is trapezoidal, two side edges of the thread are respectively arranged as an upper buckling side edge and a tripping side edge, a tooth socket is arranged between two adjacent threads, the bottom surface of the tooth socket is a cylindrical surface of the screw body, and a chamfer angle is arranged at the joint of the upper buckling side edge, the tripping side edge and the bottom surface; the included angle between the side edge of the upper buckle side and the bottom surface is 42.5-46.5 degrees; the included angle between the side edge of the tripping side and the bottom surface is 91-95 degrees.
In one specific embodiment of the invention, the side of the screw body is shown at an angle of 20 ° to the axis.
In a particular embodiment of the invention, the threaded terminal end is provided with a torque transmission groove axially along the screw body.
In a specific embodiment of the present invention, the torque transfer groove is one of a straight line, an inner triangle, an inner square, a cross, a rice, a quincunx, and an inner hexagon.
In a specific embodiment of the present invention, the threaded body is axially provided with a hollow cavity, one end of the hollow cavity is connected to the torque transmission groove, and the other end of the hollow cavity is through or closed.
In a specific embodiment of the present invention, a plurality of bone ingrowth holes are formed in the bottom surface, and the bone ingrowth holes communicate with the hollow cavity.
In a specific embodiment of the invention, the bottom surface is provided with a plurality of bone in-growth holes.
In a specific embodiment of the present invention, the bone ingrowth hole is provided with at least 1 hole on the bottom surface between two adjacent threads.
In one specific embodiment of the invention, the bone ingrowth holes are provided in at least 4 of the same conical intercondylar screw, with the 4 bone ingrowth holes projecting equally around the circumference of the screw body.
In a specific embodiment of the invention, the conical intercondylar screw is made of a titanium alloy material.
In clinical practice, run into the scaphoid bone, the unstable case of joint that appears between two or three in talus and the calcaneus, adopt the operation mode at scaphoid bone, conical ankle screw is twisted in to gap department between two or three in talus and the calcaneus, through the occupation to the gap, make scaphoid bone, talus, calcaneus receive the extrusion and relative position is fixed, do not lead to the fact destruction to bone tissue itself, implant the back for a long time, adjacent skeleton can be gone into through the bone length income hole length, the structure is more firm, ankle screw simple structure, the operation is with low costs, implant reliable and stable, patient's recovery cycle is short, do not influence normal life.
3. Advantageous effects
Compared with the prior art, the screw between the ankles has the advantages that the screw between the ankles is simple in structure, the screw is more easily adapted to a conical bone gap with a narrow space through a conical design, the mass burden is reduced by adopting a hollow structure, the bone tissue is not damaged, the operation cost is low, the implantation is stable and reliable, the recovery period of a patient is short, the normal life is not influenced, and the effect is obvious.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic front view of the present invention.
Fig. 2 is a left side view structure diagram of the present invention.
Fig. 3 is a right-view structural schematic diagram of the present invention.
Fig. 4 is a schematic view of the cross-sectional structure of the thread of the present invention.
Fig. 5 is a schematic cross-sectional structure of the present invention.
In the figure: 1-thread start; 2-a threaded termination; 3-spherical surface; 4-threading; 5-buckling the side edge; 6-tripping side edge; 7-bottom surface; 8-chamfering; 9-torque transfer grooves; 10-a hollow cavity; 11-bone in-growth hole.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, not all embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the invention.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 5, a conical inter-ankle screw is characterized by comprising a screw body, wherein the screw body is conical, the included angle between the side surface of the screw body and an axis is 15-25 degrees, one end of the screw body is provided with a thread starting end 1, the other end of the screw body is provided with a thread terminal 2, and the joint of the screw body and the thread starting end 1 is a spherical surface 3; the screw body is provided with a thread 4 extending from the thread starting end 1 to the thread terminal end 2; the cross section of the thread 4 is trapezoidal, two side edges of the thread 4 are respectively arranged as an upper buckling side edge 5 and a tripping side edge 6, a tooth socket is arranged between two adjacent threads 4, the bottom surface 7 of the tooth socket is the side surface of the screw body, a chamfer 8 is arranged at the joint of the upper buckling side edge 5, the tripping side edge 6 and the bottom surface 7, and the chamfer 8 is a fillet; the included angle between the side edge 5 of the upper buckle side and the bottom 7 is 42.5-46.5 degrees; the included angle between the side edge 6 of the tripping side and the bottom 7 is 91-95 degrees.
The side of the screw body is shown at an angle of 20 deg. to the axis.
The threaded end 2 is provided with a torque transfer groove 9 axially along the screw body.
The torque transmission groove 9 is one of a straight line, an inner triangle, an inner square, a cross, a rice, a quincunx, and an inner hexagonal, and the inner hexagonal is adopted as the torque transmission groove 9 in the present embodiment.
The body of the thread 4 is provided with a hollow cavity 10 along the axial direction, one end of the hollow cavity 10 is connected with the torque transmission groove 9, and the other end is through or closed, in this embodiment, a through structure is adopted.
A plurality of bone ingrowth holes 11 are formed in the bottom surface 7, and the bone ingrowth holes 11 communicate with the hollow chamber 10.
The bottom surface 7 is provided with a plurality of bone in-growth holes 11.
At least 1 bone ingrowth hole 11 is provided in the bottom surface 7 between two adjacent threads 4.
At least 4 bone ingrowth holes 11 are formed in the same conical intercondylar screw, and the projections of the 4 bone ingrowth holes 11 equally divide the circumference of the screw body.
The conical inter-ankle bolt is made of a titanium alloy material.
In clinical practice, run into the scaphoid bone, the unstable case of joint that appears between two or three in talus and the calcaneus, adopt the operation mode at scaphoid bone, conical ankle screw is twisted in gap department between two or three in talus and the calcaneus, through the occupation to the gap, make scaphoid bone, talus, the calcaneus receive the extrusion and relative position is fixed, do not lead to the fact destruction to bone tissue itself, implant the back for a long time, adjacent skeleton can be long-term income through bone length hole 11, the structure is more firm, ankle screw simple structure, the operation is with low costs, implant reliable and stable, patient's recovery cycle is short, do not influence normal life.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A conical intercondylar screw, comprising: the screw comprises a screw body, wherein the screw body is conical, the included angle between the side surface of the screw body and an axis is 15-25 degrees, one end of the screw body is provided with a thread starting end, the other end of the screw body is provided with a thread terminal, and the joint of the screw body and the thread starting end is spherical; the screw body is provided with a thread extending from a thread starting end to a thread terminal end; the cross section of the thread is trapezoidal, two side edges of the thread are respectively arranged as an upper buckling side edge and a tripping side edge, a tooth socket is arranged between two adjacent threads, the bottom surface of the tooth socket is a cylindrical surface of the screw body, and a chamfer angle is arranged at the joint of the upper buckling side edge, the tripping side edge and the bottom surface; the included angle between the side edge of the upper buckle side and the bottom surface is 42.5-46.5 degrees; the included angle between the side edge of the tripping side and the bottom surface is 91-95 degrees.
2. The conical intercondylar screw of claim 1, wherein: the side of the screw body is shown at an angle of 20 deg. to the axis.
3. The conical intercondylar screw of claim 1, wherein: and the thread terminal is provided with a torque transmission groove along the axial direction of the screw body.
4. The conical intercondylar screw of claim 1, wherein: the torque transmission groove is one of a straight line, an inner triangle, an inner angle square, a cross, a rice, a plum blossom shape and an inner hexagon.
5. The conical intercondylar screw of claim 3 or 4, wherein: the thread body is axially provided with a hollow cavity, one end of the hollow cavity is connected with the torque transmission groove, and the other end of the hollow cavity is communicated or sealed.
6. The conical intercondylar screw of claim 5, wherein: the bottom surface is provided with a plurality of bone ingrowth holes which are communicated with the hollow cavity.
7. The conical intercondylar screw of claim 5, wherein: the bottom surface is provided with a plurality of bone ingrowth holes.
8. The conical intercondylar screw of claim 7, wherein: the bone ingrowth holes are provided at least 1 on the bottom surface between two adjacent threads.
9. The conical intercondylar screw of claim 7, wherein: the bone ingrowth holes are at least provided with 4 bone ingrowth holes on the same conical intercondylar screw, and the projections of the 4 bone ingrowth holes equally divide the circumference of the screw body.
10. The conical intercondylar screw of claim 1, wherein: the conical inter-ankle bolt is made of a titanium alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110696887.2A CN113331932A (en) | 2021-06-23 | 2021-06-23 | Conical screw between ankles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110696887.2A CN113331932A (en) | 2021-06-23 | 2021-06-23 | Conical screw between ankles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113331932A true CN113331932A (en) | 2021-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110696887.2A Pending CN113331932A (en) | 2021-06-23 | 2021-06-23 | Conical screw between ankles |
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| Country | Link |
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| CN (1) | CN113331932A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5891146A (en) * | 1997-10-15 | 1999-04-06 | Applied Biological Concepts, Inc. | Wedge orthopedic screw |
| US20020038123A1 (en) * | 2000-09-20 | 2002-03-28 | Visotsky Jeffrey L. | Osteotomy implant |
| US20050177165A1 (en) * | 2004-02-11 | 2005-08-11 | Kerry Zang | Conical, threaded subtalar implant |
| US20070233145A1 (en) * | 2005-08-18 | 2007-10-04 | Biocomposites Ltd. | Tensegrity osteotomy system |
| CN205658941U (en) * | 2016-02-18 | 2016-10-26 | 杭州锐健马斯汀医疗器材有限公司 | Foraminiferous interface screw |
| CN111035444A (en) * | 2020-01-08 | 2020-04-21 | 中山大学 | Degradable magnesium-based interface screw capable of preventing tendon from cutting and slipping with high torque |
| US20210128313A1 (en) * | 2016-02-04 | 2021-05-06 | Michael Graham | Sinus tarsi implant |
| CN112754639A (en) * | 2021-01-27 | 2021-05-07 | 海南苏生生物科技有限公司 | Novel interface screw |
-
2021
- 2021-06-23 CN CN202110696887.2A patent/CN113331932A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5891146A (en) * | 1997-10-15 | 1999-04-06 | Applied Biological Concepts, Inc. | Wedge orthopedic screw |
| US20020038123A1 (en) * | 2000-09-20 | 2002-03-28 | Visotsky Jeffrey L. | Osteotomy implant |
| US20050177165A1 (en) * | 2004-02-11 | 2005-08-11 | Kerry Zang | Conical, threaded subtalar implant |
| US20070233145A1 (en) * | 2005-08-18 | 2007-10-04 | Biocomposites Ltd. | Tensegrity osteotomy system |
| US20210128313A1 (en) * | 2016-02-04 | 2021-05-06 | Michael Graham | Sinus tarsi implant |
| CN205658941U (en) * | 2016-02-18 | 2016-10-26 | 杭州锐健马斯汀医疗器材有限公司 | Foraminiferous interface screw |
| CN111035444A (en) * | 2020-01-08 | 2020-04-21 | 中山大学 | Degradable magnesium-based interface screw capable of preventing tendon from cutting and slipping with high torque |
| CN112754639A (en) * | 2021-01-27 | 2021-05-07 | 海南苏生生物科技有限公司 | Novel interface screw |
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Application publication date: 20210903 |
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