CN113040887B - Intramedullary nail structure - Google Patents
Intramedullary nail structureInfo
- Publication number
- CN113040887B CN113040887B CN202110267591.9A CN202110267591A CN113040887B CN 113040887 B CN113040887 B CN 113040887B CN 202110267591 A CN202110267591 A CN 202110267591A CN 113040887 B CN113040887 B CN 113040887B
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- CN
- China
- Prior art keywords
- nail
- fixing nail
- flexible connector
- section
- fixing
- 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.)
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-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary devices, e.g. pins or nails
- 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
- 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 or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary devices, e.g. pins or nails
- A61B17/7233—Intramedullary devices, e.g. pins or nails with special means of locking the nail to the bone
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 application provides an intramedullary nail structure which comprises a first fixed nail, a second fixed nail and a first flexible connecting body, wherein a first end of the first flexible connecting body is arranged in the first fixed nail in a penetrating manner and is connected with the first fixed nail, a second end of the first flexible connecting body is arranged in the second fixed nail in a penetrating manner and is connected with the second fixed nail, and the first fixed nail and the second fixed nail can move relatively through the first flexible connecting body. The technical scheme provided by the application can solve the problem that the joint cannot move after fusion treatment in the prior art.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an intramedullary nail structure.
Background
For patients with traumatic ankle joint and osteoarthritis, the patients cannot walk for a long time and do physical labor, the work and life of the patients are seriously affected, and currently, the patients are mainly treated by ankle joint fusion and replacement.
In the case of treatment by ankle fusion, fusion treatment is generally performed by fixing an intramedullary nail, and the intramedullary nail is passed through the heel and shank joints. However, the treatment mode can fix the heel joint and the shank joint, and the mobility of the two joints is completely lost after operation, so that normal physiological activities of the joints are hindered, and a patient cannot exercise early after operation.
Disclosure of Invention
The invention provides an intramedullary nail structure, which aims to solve the problem that joints cannot move after fusion treatment in the prior art.
The invention provides an intramedullary nail structure which comprises a first fixed nail, a second fixed nail and a first flexible connecting body, wherein a first end of the first flexible connecting body is arranged in the first fixed nail in a penetrating manner and is connected with the first fixed nail, a second end of the first flexible connecting body is arranged in the second fixed nail in a penetrating manner and is connected with the second fixed nail, and the first fixed nail and the second fixed nail can move relatively through the first flexible connecting body.
Further, the first fixing nail is provided with a first mounting hole, the second fixing nail is provided with a second mounting hole, the first end of the first flexible connecting body is fixed in the first mounting hole, and the second end of the first flexible connecting body is movably arranged in the second mounting hole.
Further, a limiting structure is arranged between the second end of the first flexible connector and the second mounting hole.
Further, the second mounting hole is provided with a conical hole section, the diameter of the conical hole section is gradually increased from the second fixing nail to the first fixing nail, and the conical hole section is matched with the second end of the first flexible connector to limit.
Further, the first flexible connector is provided with a first section, a second section and a third section which are connected with each other, the first section and the second section are of a ladder structure, the diameter of the first section is larger than that of the second section, and the diameter of the third section is gradually increased towards a direction away from the first section.
Further, a thread structure is arranged between the first fixing nail and the second fixing nail, and the first fixing nail and the second fixing nail can be connected and fixed through the thread structure.
Further, one end of the first mounting hole, which is close to the second fixing nail, is provided with an internal thread, the end part of the second fixing nail, which is provided with the second mounting hole, is provided with an annular boss, the annular boss is provided with an external thread, and the internal thread and the external thread form a thread structure.
Further, the intramedullary nail structure further comprises a third fixing nail and a second flexible connecting body, the first end of the second flexible connecting body is arranged in the second fixing nail in a penetrating mode and is connected with the second fixing nail, the second end of the second flexible connecting body is arranged in the third fixing nail in a penetrating mode and is connected with the third fixing nail, and the second fixing nail and the third fixing nail can move relatively through the second flexible connecting body.
Further, the intramedullary nail structure further comprises a transverse locking nail, and the first fixing nail and the second fixing nail are respectively provided with the transverse locking nail in a penetrating mode.
Further, the first flexible connector and/or the second flexible connector are made of a polycarbonate polyurethane material.
By applying the technical scheme of the invention, the intramedullary nail structure comprises a first fixed nail, a second fixed nail and a first flexible connector, wherein the first fixed nail and the second fixed nail are connected together through the first flexible connector and can move relatively. Through the structure, the joint can be relatively moved while the joint of the patient is fixed, so that normal physiological movement of the patient is met, early rehabilitation training of the patient is facilitated, and the rehabilitation effect is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 illustrates a cross-sectional view of an intramedullary nail structure provided in accordance with an embodiment of the present invention;
FIG. 2 shows a schematic view of an intramedullary nail structure provided in accordance with an embodiment of the present invention;
FIG. 3 shows a perspective view of the first staple of FIG. 1;
FIG. 4 shows a cross-sectional view of the first staple of FIG. 1;
FIG. 5 shows a perspective view of the second staple of FIG. 1;
FIG. 6 shows a cross-sectional view of the second staple of FIG. 1;
FIG. 7 shows a schematic structural view of the first flexible connector of FIG. 1;
FIG. 8 illustrates an enlarged view of the junction of a first staple and a second staple provided in accordance with an embodiment of the present invention;
FIG. 9 shows a perspective view of the third staple of FIG. 1;
fig. 10 shows a cross-sectional view of the third staple of fig. 1.
Wherein the above figures include the following reference numerals:
10. The device comprises a first fixing nail, a first mounting hole, a second fixing nail, a second mounting hole, a ring-shaped boss, a first flexible connector, a first section 31, a first section 32, a second section 33, a third section 40, a third fixing nail, a second flexible connector, a transverse locking nail and a second flexible connector.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 and 2, the embodiment of the present application provides an intramedullary nail structure including a first fixing nail 10, a second fixing nail 20, and a first flexible connecting body 30, a first end of the first flexible connecting body 30 is penetrated in the first fixing nail 10 and connected with the first fixing nail 10, a second end of the first flexible connecting body 30 is penetrated in the second fixing nail 20 and connected with the second fixing nail 20, and the first fixing nail 10 and the second fixing nail 20 can relatively move through the first flexible connecting body 30. So can be after fusing first staple 10 and second staple 20 at the skeleton, make the joint that first staple 10 and second staple 20 fused can move in certain limit, make the patient can normally move, avoid because the unable problem such as the oppression of joint anomaly, adjacent joint burden take place that causes of joint. In this embodiment, the first staple 10 is for fusion attachment to the tibia and the second staple 20 is for fusion attachment to the talus.
By the technical scheme provided by the application, the first fixing nail 10 and the second fixing nail 20 are connected together through the first flexible connector 30, and the first fixing nail and the second fixing nail can move relatively. Through the structure, the joint can be relatively moved while the joint of the patient is fixed, so that normal physiological movement of the patient is met, early rehabilitation training of the patient is facilitated, and the rehabilitation effect is improved. The scheme is simple in structure and low in installation and manufacturing cost.
As shown in fig. 3 to 6, the first fixing pin 10 has a first mounting hole 11, the second fixing pin 20 has a second mounting hole 21, a first end of the first flexible coupling body 30 is fixed in the first mounting hole 11, and a second end of the first flexible coupling body 30 is movably disposed in the second mounting hole 21. Through the structure, the second fixing nail 20 and the first fixing nail 10 can have relative displacement, so that the joint can move in the displacement range, and the joint movement requirement is met while the joint treatment is ensured.
Wherein the first flexible connector 30 may be fixed in the first mounting hole 11 by injection molding.
In this embodiment, a limiting structure is disposed between the second end of the first flexible connector 30 and the second mounting hole 21. Through setting up limit structure can restrict the biggest displacement of first flexible connector 30 and second staple 20, avoid first flexible connector 30 to deviate from in the second staple 20, cause first staple 10 and second staple 20 to connect inefficacy.
Specifically, the second mounting hole 21 has a tapered hole section, and the diameter of the tapered hole section gradually increases from the second fixing nail 20 to the first fixing nail 10, and the tapered hole section cooperates with the second end of the first flexible connector 30 to limit. The tapered hole section is provided to limit the maximum displacement of the first flexible connector 30, so that the structure is simple and the design is convenient.
As shown in fig. 7, the first flexible connecting body 30 has a first section 31, a second section 32 and a third section 33 connected to each other, the first section 31 and the second section 32 are of a stepped structure, and the diameter of the first section 31 is larger than that of the second section 32, and the diameter of the third section 33 gradually increases in a direction away from the first section 31. Limiting can also be performed by setting the third section 33 to be of a conical structure, in this embodiment, a conical hole section is provided in the second mounting hole 21, the third section of the first flexible connector 30 is also set to be of a conical structure, and the conical hole section and the third section are set to be of an adaptive structure, so that the second fixing nail 20 and the first flexible connector 30 can be effectively connected, and relative displacement of the second fixing nail and the first flexible connector 30 can be realized.
Wherein, have the screw thread structure between first staple 10 and the second staple 20, first staple 10 and second staple 20 can be fixed through the screw thread structure connection. Through setting up the helicitic texture, can be convenient for fix first staple 10 and second staple 20 at the installation initial stage, guarantee the relative position of first staple 10 and second staple 20 when the installation, after the installation with first staple 10 and second staple 20 unscrew to make the two can relative activity.
As shown in fig. 8, an end of the first mounting hole 11 near the second fixing pin 20 has an internal thread, an end of the second fixing pin 20 having the second mounting hole 21 is provided with an annular boss 22, an external thread is provided on the annular boss 22, and the internal thread and the external thread form a thread structure. The design scheme has simple structure and is convenient for production and processing.
As shown in fig. 9 and 10, the intramedullary nail structure further includes a third fixing nail 40 and a second flexible connecting body 50, a first end of the second flexible connecting body 50 is penetrated in the second fixing nail 20 and connected with the second fixing nail 20, a second end of the second flexible connecting body 50 is penetrated in the third fixing nail 40 and connected with the third fixing nail 40, and the second fixing nail 20 and the third fixing nail 40 can relatively move through the second flexible connecting body 50. In this embodiment, the third staple 40 is configured for fusion attachment to the calcaneus bone. By adding the third fixing nail 40 and the second flexible connector 50, the length of the intramedullary nail structure can be enlarged, and the treatment length of bones can be further enlarged, so as to meet the requirements of different joint treatments.
Specifically, a third mounting hole is provided at one end of the second fixing pin 20 far away from the first fixing pin 10, a fourth mounting hole is provided at an end of the third fixing pin 40, a first end of the second flexible connector 50 is fixed in the third mounting hole, and a second end of the second flexible connector 50 is movably disposed in the fourth mounting hole. In order to facilitate the design and processing, the structure of the third mounting hole may be the same as the structure of the first mounting hole 11, the structure of the fourth mounting hole may be the same as the structure of the second mounting hole 21, and the first flexible connector 30 and the second flexible connector 50 may be designed to have the same structure.
The intramedullary nail structure further comprises a transverse locking nail 60, and the transverse locking nails 60 are respectively arranged on the first fixing nail 10 and the second fixing nail 20 in a penetrating mode. The strength of the connection between the staple and the bone can be improved by providing the cross-lock pin 60.
The first fixing pin 10, the second fixing pin 20 and the third fixing pin 40 are generally made of medical titanium alloy materials, and the first flexible connector 30 and the second flexible connector 50 are made of flexible biological materials. In this embodiment, the first flexible connector 30 and/or the second flexible connector 50 are made of a polycarbonate polyurethane material. The elastic fiber has better strength, certain flexibility and elasticity, and can meet certain elastic deformation. The requirements of relative movement are met while the first staple 10 and the second staple 20, the second staple 20 and the third staple 40 are connected.
The intramedullary nail structure provided by the application has the advantages of simple structure, low design and manufacturing cost, and can meet the normal movement of joints after being fused with bones, avoid the problems of slow recovery, adjacent joint abrasion, pathological changes and the like caused by joint fixation, and improve the treatment effect and postoperative recovery effect.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of the present invention, and the azimuth terms "inside and outside" refer to inside and outside with respect to the outline of each component itself.
Spatially relative terms, such as "above," "upper" and "upper surface," "above" and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the process is carried out, the exemplary term "above" may be included. Upper and lower. Two orientations below. The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110267591.9A CN113040887B (en) | 2021-03-11 | 2021-03-11 | Intramedullary nail structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110267591.9A CN113040887B (en) | 2021-03-11 | 2021-03-11 | Intramedullary nail structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113040887A CN113040887A (en) | 2021-06-29 |
| CN113040887B true CN113040887B (en) | 2025-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110267591.9A Active CN113040887B (en) | 2021-03-11 | 2021-03-11 | Intramedullary nail structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN113040887B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101224133A (en) * | 2008-01-29 | 2008-07-23 | 张国川 | Jiggle locking nail of intramedullary nail |
| CN206517999U (en) * | 2017-01-18 | 2017-09-26 | 夏金利 | A kind of raft fishes fishing rod telescoping mechanism |
| CN215129894U (en) * | 2021-03-11 | 2021-12-14 | 北京理贝尔生物工程研究所有限公司 | Intramedullary nail structure |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7841353B2 (en) * | 2009-02-12 | 2010-11-30 | Ming-Hsien Lee | Foldable walking stick with adjustable length and a shock-proofing mechanism |
| US20120065638A1 (en) * | 2009-05-21 | 2012-03-15 | Sonoma Orthopedic Products, Inc. | Snap and twist segmented intramedullary system, apparatus and associated methods |
| US10883532B2 (en) * | 2013-03-14 | 2021-01-05 | William R. Krause | Flexible shaft for use as an internal splint for industrial application |
-
2021
- 2021-03-11 CN CN202110267591.9A patent/CN113040887B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101224133A (en) * | 2008-01-29 | 2008-07-23 | 张国川 | Jiggle locking nail of intramedullary nail |
| CN206517999U (en) * | 2017-01-18 | 2017-09-26 | 夏金利 | A kind of raft fishes fishing rod telescoping mechanism |
| CN215129894U (en) * | 2021-03-11 | 2021-12-14 | 北京理贝尔生物工程研究所有限公司 | Intramedullary nail structure |
Also Published As
| Publication number | Publication date |
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| CN113040887A (en) | 2021-06-29 |
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