CN112451073B - Clavicle intramedullary nail fixing anchor and clavicle intramedullary nail fixing device - Google Patents
Clavicle intramedullary nail fixing anchor and clavicle intramedullary nail fixing device Download PDFInfo
- Publication number
- CN112451073B CN112451073B CN202011353974.XA CN202011353974A CN112451073B CN 112451073 B CN112451073 B CN 112451073B CN 202011353974 A CN202011353974 A CN 202011353974A CN 112451073 B CN112451073 B CN 112451073B
- Authority
- CN
- China
- Prior art keywords
- intramedullary nail
- clavicle
- basic
- threaded sleeve
- cavity
- 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.)
- Active
Links
Images
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
The invention belongs to the technical field of clavicle fracture fixation, and particularly relates to a clavicle intramedullary nail fixing anchor and a clavicle intramedullary nail fixing device. The intramedullary nail comprises a basic threaded sleeve, wherein the outer wall of the basic threaded sleeve forms a matching surface which is used for being in expansion type or threaded type matching on a positioning hole at a clavicle, and a tube cavity of the basic threaded sleeve forms a passing cavity which can be used for the intramedullary nail to enter a medullary cavity of the clavicle through the positioning hole; the intramedullary nail fixing anchor also comprises a positioning piece for radially locking the end part of the intramedullary nail. The intramedullary nail fixing anchor realizes the reliable positioning effect on the end part of the intramedullary nail and avoids the falling and accidental twisting of the intramedullary nail in the marrow cavity of the clavicle; the clavicle intramedullary nail fixing device is used for realizing the efficient fixing function of the fractured clavicle in a minimally invasive environment.
Description
Technical Field
The invention belongs to the technical field of clavicle fracture fixation, and particularly relates to a clavicle intramedullary nail fixing anchor and a clavicle intramedullary nail fixing device.
Background
The clavicle is S-shaped and arranged between the sternum stem and the acromion, and is a bone bracket for connecting the upper limb and the trunk. The clavicle is subcutaneous and superficial, and is easy to fracture under the action of external force, the incidence rate of the clavicle accounts for 5% -10% of the fracture of the whole body, and the clavicle is mostly generated in children and young and old years. The middle clavicle fracture is a common clinical fracture, the traditional treatment method needs to cut and expose a fracture area, and then adopts a reduction steel plate for reduction and fixation, the method has long incision and large wound, large soft tissue injury around the fracture, much bleeding during operation, more side injury, secondary taking-out and long recovery time after the operation of a patient. With the development of minimally invasive surgery, it is more and more common to use minimally invasive surgery in orthopedic surgery treatment, for example, in the technical scheme of the clavicle interlocking intramedullary nail system of chinese patent publication No. CN101474092A, a most conventional intramedullary nail fixing method is provided: when the self-tapping type main nail is used, the opening and the reaming of the inner end and the outer end of the clavicle completely place the main nail in the clavicle, and the self-tapping type main nail is matched with the reserved holes at the two ends of the main nail after the locking nail radially penetrates through the clavicle, so that the main nail and the clavicle are fixed. Obviously, on one hand, the two ends of the main nail need to be provided with the choke plugs, and the choke plugs are easy to fall off during the use process or the disassembly of the intramedullary nail, thereby causing safety accidents. On the other hand, the main nail is installed along the marrow cavity of the clavicle, the operation is inconvenient, particularly, the problem of taking out the main nail after the operation is solved, the pain of a patient is increased, and meanwhile, the torsion resistance and the anti-rotation capacity are poor, so that the adverse hidden trouble is brought to the later healing and rehabilitation. Finally, the fixation of the entire staple is entirely dependent on the self-tapping of the staple with respect to the shaft of the clavicle, and the operational reliability of the staple is questionable. With the development of orthopedic medical technology, it is a great trend to develop minimally invasive surgery in the treatment of clavicle fracture, and how to solve the problem of minimally invasive surgery and clavicle fracture fixation is one of the problems that surgeons must look directly at.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a reasonable and practical intramedullary nail fixing anchor, which realizes the reliable positioning effect on the end part of the intramedullary nail and avoids the falling and accidental twisting of the intramedullary nail in a medullary cavity of the clavicle; the invention also provides a clavicle intramedullary nail fixing device applying the clavicle intramedullary nail fixing anchor, which has the advantages of convenience in operation and accurate and firm positioning, and can realize an efficient fixing function on the fractured clavicle in a minimally invasive environment.
In order to achieve the purpose, the invention adopts the following technical scheme:
a clavicle intramedullary nail fixation anchor characterized in that: the intramedullary nail fixing device comprises a basic threaded sleeve, wherein the outer wall of the basic threaded sleeve forms a matching surface which is used for being in expansion type or threaded type matching on a positioning hole at the clavicle, and a tube cavity of the basic threaded sleeve forms a passing cavity which can be used for the intramedullary nail to enter a medullary cavity of the clavicle through the positioning hole; the intramedullary nail fixing anchor also comprises a positioning piece for radially locking the end part of the intramedullary nail.
Preferably, the top end face of the base thread insert, which is positioned outside the clavicle, extends upwards to form fins, and the fins are uniformly distributed around the axis of the base thread insert in sequence; the root of the wing piece is in hinged fit with the top end face of the basic threaded sleeve, so that the wing piece can do hinged swinging actions close to and away from each other relative to the axis of the basic threaded sleeve; the setting element still includes the clamping ring, the clamping ring is down along the axis direction of basic swivel nut, and the interior anchor ring of clamping ring constitutes the receipts beam cavity that is used for receiving all fins, and all fins all are located the tip outer wall of intramedullary nail and the clamping ring between the anchor ring interior anchor ring regional department this moment, and thereby all fins radially lock the intramedullary nail because of the radial pressure that receives the interior anchor ring of clamping ring.
Preferably, the outer side wing surface of the wing is a thread surface, and the pressing ring is a locking nut; when the vanes perform similar action to the axis of the basic screw sleeve, the thread surfaces of the vanes are combined together to form an external thread section which can be matched with the internal thread section at the inner ring surface of the pressing ring.
Preferably, the shape of the fin is a water drop-shaped plate shape with the width gradually increased from the extension end to the hinged end, and the plate thickness of the fin is gradually increased from the extension end to the hinged end.
Preferably, one end of the inner ring surface of the pressing ring, which faces the basic threaded sleeve, is in a flared hole shape with a gradually expanded opening.
Preferably, a gap groove for avoiding an intramedullary nail installation path is arranged on the bottom end cylinder wall of the basic threaded sleeve, which is used for extending into the marrow cavity of the clavicle; and an indicating mark used for pointing to the direction of the notch groove is arranged on the top end face of the basic threaded sleeve.
Preferably, the bottom end of the through cavity of the basic threaded sleeve is sealed, so that the through cavity and the notch groove are matched together to form an arc-shaped guide cavity channel for guiding the advancing direction of the intramedullary nail; the bottom surface of the lower threaded section of the basic threaded sleeve is attached to the bottom surface of the clavicle medullary cavity or forms hole-shaft fit with preset holes in the bottom surface of the clavicle medullary cavity.
Preferably, the positioning piece comprises a set screw, radial threaded holes are arranged on the basic screw sleeve, and the radial threaded holes are sequentially and uniformly distributed in a surrounding manner along the passing cavity; after the fastening screw is in threaded fit with the radial threaded hole, the top end of the fastening screw is in abutting fit with the outer wall of the intramedullary nail.
Preferably, the intramedullary nail fixing device using the intramedullary nail fixing anchor is characterized in that: the intramedullary nail fixing anchor is a group, the rod body of the intramedullary nail is positioned in the marrow locking cavity and passes through the fracture area, the far end of the intramedullary nail extends to the far end of the marrow locking cavity and is positioned at the far end of the marrow locking cavity in a propping and tightening way, the near end of the intramedullary nail extends along the marrow locking cavity and extends out of the marrow locking cavity through the passing cavity of the intramedullary nail fixing anchor and is locked by the positioning piece at the intramedullary nail fixing anchor.
Preferably, the intramedullary nail fixing device using the intramedullary nail fixing anchor is characterized in that: the two groups of the intramedullary nail fixing anchors are sequentially arranged along the length direction of the clavicle, the rod body of the intramedullary nail is positioned in the medullary cavity of the clavicle and passes through a fracture area, the two ends of the intramedullary nail extend along the medullary cavity of the clavicle in the reverse direction and respectively extend out of the medullary cavity of the clavicle through the passing cavities of the group of the intramedullary nail fixing anchors, and the two ends of the intramedullary nail are respectively locked by the positioning pieces at the position of the group of the intramedullary nail fixing anchors.
The invention has the beneficial effects that:
1) when the intramedullary nail is directly fixed by the fixing screw, the intramedullary nail still keeps a straight rod state, and the axis of the fixing screw is vertical to the axis of the intramedullary nail, which is one of the main characteristics of the traditional intramedullary nail. In the conventional mode, on one hand, the insecurity of fixation is caused, because the top end of the fixing screw is directly matched with a preformed hole at the end part of the intramedullary nail, the pretightening force is not easy to control, and the matching loosening is normal; on the other hand, the rotation trend of the intramedullary nail is limited only by the insertion and matching of the end part of the fixing screw and the hole shaft of the preformed hole, once the error occurs in the installation of the fixing screw, or the fixing screw is separated from the preformed hole at the end part of the intramedullary nail due to the accidental action of the patient during postoperative rehabilitation, the intramedullary nail loses the constraint, and the matching reliability and the anti-twist performance are questioned. In addition, the intramedullary nail is difficult to take out after operation, which often brings more pain to the patient.
Based on the existing situation, the invention provides a clavicular intramedullary nail fixing anchor, which is designed in a way that the traditional straight rod layout of the intramedullary nail is abandoned, and a sleeve structure of a basic threaded sleeve is utilized, so that after a rod body of the intramedullary nail normally travels along a clavicular medullary cavity, the end part of the intramedullary nail is bent or bent again and extends out of the clavicle through the basic threaded sleeve, and then the clavicle is radially locked by a positioning piece. Thus, on one hand, the fixation is firm and reliable; because the intramedullary nail plays a role in supporting the clavicle and simultaneously tensioning and resetting the two parts of the clavicle fracture towards the middle, the intramedullary nail bears the axial force along the length direction of the clavicle; the matching mode of the end part of the intramedullary nail and the basic threaded sleeve is similar to the mode that the intramedullary nail is hooked on the basic threaded sleeve. Therefore, when the axial force is transmitted to the two ends, the bent or curved end of the intramedullary nail transmits the force to the base nut, and the base nut transmits the force to the clavicle, so that the forces are counteracted with each other, and the matching reliability is extremely high. On the other hand, the structure of the invention also has strong anti-twist performance, even if the clavicle bears the twist force due to the self action when the patient recovers after the operation, the end part of the intramedullary nail is bent or curved, even the whole intramedullary nail is curved, and the anti-twist performance of the intramedullary nail are obviously stronger than those of a pure straight rod-shaped nail body. In addition, the intramedullary nail is directly communicated with the inside and the outside of the marrow cavity of the clavicle, and the intramedullary nail is directly pulled out of the positioning hole of the flue by controlling the bending radian of the intramedullary nail when the intramedullary nail needs to be taken out, so the intramedullary nail is obviously very convenient and fast to operate.
In conclusion, the invention has the characteristics of reasonable structure, simple operation, flexible operation, accurate positioning and firm fixation. The method can be carried out in a minimally invasive environment, so that fracture healing can be better promoted, and the aim of effectively fixing the clavicle fracture part under the minimal trauma is fulfilled.
2) As a further preferable scheme of the invention, the positioning piece can be a radial set screw directly arranged on the basic screw sleeve, and can also be independently provided with a fin and a pressing ring to realize the radial locking function of the intramedullary nail. Wherein:
for the set screws, preferably more than two sets of circumferentially equispaced set screws are used. The reason is that: when the end part of the intramedullary nail is fixed in the radial direction, the end parts of the intramedullary nail can be always positioned on the axis of the basic screw by more than two groups of set screws, namely the two set screws are always coaxial, so that the position of the intramedullary nail in the marrow locking cavity can be accurately positioned, and the purpose of reliably fixing the fracture part is ensured.
The cooperation of the tabs with the pressure ring is another important part of the present invention. In fact, the base insert cooperates with the fins to form a flower insert-like structure. The flowering screw sleeve is provided with a wing or a blade on the nut section on the basis of the screw sleeve as the name suggests. In fact, in normal use, if the end of the intramedullary nail is threaded, the compression ring can be directly threaded onto the intramedullary nail without the involvement of fins. However, in reality, most intramedullary nails are of a structure such as a kirschner wire, which is a smooth rod structure, and therefore require the participation of fins to function like a shim. When the press ring goes down along the axial direction of the basic threaded sleeve, the fins are forced to generate a converging action similar to closure of buds, so that the corresponding end parts of the intramedullary nail are locked and locked, and the purpose of radial locking relative to the end parts of the intramedullary nail is conveniently realized.
3) When the fin is actually arranged, the fin can be a conventional smooth sheet, and mortise and tenon joints or snap rings and the like are arranged on the nut section, and then the corresponding mortise and tenon joints or the corresponding clamping grooves are arranged on the compression ring, so that the purpose of forced compression of the fin is realized while the relative positions of the compression ring and the basic screw sleeve are fixed in a mortise and tenon joint or clamping and embedding manner. Preferably, the wing pieces are threaded, so that structures such as mortise and tenon joints or clamping and embedding are not needed, the locking nuts serving as the compression rings are directly in threaded fit with the preliminarily contracted wing pieces, the function of continuously tightening the wing pieces is realized by continuously screwing the compression rings, and the purpose of locking the end parts of the intramedullary nails is finally realized.
4) The thickness of the fin is thin at the top and thick at the bottom, so that the fin can be uniformly folded when the pressing ring is assembled, and larger radial locking force can be gradually applied. Of course, in actual layout, the end of the inner ring surface of the pressure ring facing the basic screw sleeve is preferably in a flared shape with a gradually flared mouth, so that the assembly efficiency and the fastening efficiency of the pressure ring can be improved by utilizing the guidance of the flared hole.
5) The arrangement of the notch groove reduces the bending amplitude of the intramedullary nail as much as possible, so that the intramedullary nail can enter the marrow-locking cavity with the gradient as slow as possible, thereby keeping the bending bearing characteristic of the intramedullary nail, avoiding the problem that the intramedullary nail cannot normally pass along the narrow marrow-locking cavity due to overlarge bending curvature of the intramedullary nail, and obviously improving the use reliability and the installation efficiency of the intramedullary nail. Certainly, still further, can seal the cover chamber bottom of basic swivel nut and form the direction slope form to make the intramedullary nail pass the chamber and get into the lock marrow intracavity by the breach groove slant naturally after also can be passed through the chamber, can obtain further promotion in the simple operation degree by the direction slope direction.
6) When the invention works practically, a group of the clavicle intramedullary nail fixing anchors can be arranged independently, and two groups of the clavicle intramedullary nail fixing anchors can be arranged and matched with each other. Take two sets of designs as an example: positioning holes can be arranged on two sides of the fracture area of the clavicle in advance, and a basic threaded sleeve is fixed. Then, the intramedullary nail is inserted into the clavicle fracture part, and the two ends of the intramedullary nail extend out of the clavicle through the passing cavity of the basic threaded sleeve after being bent. Subsequently, the intramedullary nail is locked using locators such as tabs and compression rings. At the moment, the two groups of the intramedullary nail fixing anchors play a role in positioning two ends of the intramedullary nail, and the intramedullary nail plays a role in supporting two parts of the clavicle fracture. After the fracture is healed, the fixing anchors are taken out in sequence, and then the intramedullary nail is directly removed from the positioning hole along the bending direction of the intramedullary nail, the whole operation process is carried out under the condition of minimal invasion, and the operation is very convenient.
Drawings
FIG. 1 is a cross-sectional view of a mounting structure of one embodiment of the present invention;
FIG. 2 is an enlarged view of a portion I of FIG. 1;
FIG. 3 is a schematic perspective view of a basic threaded insert;
FIG. 4 is a cross-sectional view of the pressure ring;
fig. 5 is a sectional view of a mounting structure of another embodiment of the present invention.
The actual correspondence between each label and the part name of the invention is as follows:
a-intramedullary nail, b-clavicle
10-basic thread insert 11-notch groove 12-indication mark
21-vane 21 a-outer flank 22-pressure ring
Detailed Description
For the purposes of understanding, the invention will be further described in its specific structure and mode of operation with reference to the accompanying drawings in which:
one embodiment of the intramedullary nail fixation device is shown in fig. 1-5, and its main structure comprises a set of intramedullary nails a passing along the medullary cavity of the clavicle b, and intramedullary nail fixation anchors arranged at one end of the intramedullary nails a for locking the proximal ends of the intramedullary nails a. Wherein:
the intramedullary nail of clavicle fixes the anchor and is the core structure of the invention. The intramedullary nail anchoring anchor comprises a basic threaded sleeve 10 and a positioning piece for radially locking the intramedullary nail. During actual assembly, the basic threaded sleeve 10 is directly assembled on the positioning hole drilled in the radial direction at the clavicle b, and of course, the positioning hole can be drilled in a slightly inclined manner during actual arrangement. The intramedullary nail a is then threaded along the passage cavity of the basic nut 10. Then, the pressing ring 22 with the locking nut structure is assembled on the wings 21 which are in the shape of a convergent beam on the basic threaded sleeve 10, so that the purpose of radial locking of the end part of the intramedullary nail a can be realized as shown in fig. 1-2. Due to the arc-shaped guide channel formed by the matching of the notch groove 11 and the passing cavity, the intramedullary nail a can enter the marrow-locking cavity in a smooth arc shape and naturally presents a smooth curve configuration as shown in fig. 1. Fig. 1 is a schematic drawing only for the purpose of facilitating the understanding of the present invention, and the magnitude of bending of an intramedullary nail is not considered as a practical reference.
The specific structure of the tab 21 is shown in fig. 3 when actually assembled, and in fig. 2 when assembled. It can be seen from this point that the tab 21 is normally hinged at its root, i.e. hinged end, to the top end face of the base insert 10, while the extension end extends outwardly and forms a cantilevered leaf-like configuration of the tab 21. Due to the hinged structure of the wings 21, upon receiving radial force, can be gathered like a bud at the outer wall of the end of the intramedullary nail a passing through the passage cavity of the basic screw sleeve 10. At this time, the converging fins 21 are combined to form a screw column similar to a cone shape by the common engagement of the screw surfaces at the outer wing surfaces 21 a. In practice, however, it is also possible to provide a separate intermediate sleeve screw which is screwed into the cavity of the basic threaded sleeve 10 and on the other hand is provided with the above-mentioned tab 21 at the end, i.e. the intermediate sleeve screw fully functions as a coupling transition piece. Through the size parameters such as thickness of rational arrangement fin 21, for example fin 21 appearance is by extension end to articulated end plate width water droplet form plate form body form of thickening gradually, and the thick board of fin is by extension end to articulated end thickening gradually etc. can be very convenient rely on the screw-thread fit of clamping ring 22, realize fin 21 to the further beam-closing and compress tightly the effect of intramedullary nail. In order to increase the drawing speed of the fins 21, after the intramedullary nail a penetrates into the passing cavity of the basic threaded sleeve 10 and is in place, before the compression ring 22 is assembled, the fins 21 may be slightly drawn in by using forceps or the like and preliminarily pressed on the exposed rod body of the intramedullary nail a, and then the compression ring 22 is assembled, which will not be described herein again.
Of course, the above structure is in actual operation: a positioning hole can be arranged at one side of the fracture area of the clavicle in advance, and the basic screw sleeve 10 is fixed; at this time, the position of the indication mark 12 needs to be confirmed to ensure that the outlet of the arc-shaped guide cavity where the gap slot 11 is located can be accurately aligned with the direction of the clavicle fracture region. Then, the intramedullary nail a is extended along the passing cavity of the basic threaded sleeve 10 and is guided by the arc-shaped guide cavity channel to enter the marrow locking cavity smoothly. The intramedullary nail a is pushed all the way until the distal end of the intramedullary nail a enters the distal end of the clavicle deeply and is stuck. The intramedullary nail a is then locked using the cooperation of the tabs 21 and the compression ring 22. At this time, the single group of intramedullary nail fixing anchor has the function of positioning the proximal end of the intramedullary nail a, the distal end of the intramedullary nail a is positioned by the distal end of the locked bone marrow cavity, and the intramedullary nail a plays the role of supporting two parts of the fracture of the clavicle. After the fracture is healed, the intramedullary nail is taken out, and then the intramedullary nail is directly pulled out from the positioning hole along the bending direction of the intramedullary nail a, the whole operation process is carried out under the minimally invasive condition, and the operation is very convenient.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (7)
1. A clavicle intramedullary nail fixation anchor characterized in that: the intramedullary nail fixing device comprises a basic threaded sleeve (10), wherein the outer wall of the basic threaded sleeve (10) forms a matching surface which is used for being in expansion type or threaded type matching on a positioning hole at the clavicle, and a tube cavity of the basic threaded sleeve (10) forms a passing cavity which can be used for the intramedullary nail to enter a medullary cavity of the clavicle through the positioning hole; the intramedullary nail fixing anchor also comprises a positioning piece for radially locking the end part of the intramedullary nail;
fins (21) extend upwards from the top end face of the basic threaded sleeve (10) positioned outside the clavicle, and the fins (21) are uniformly distributed around the axis of the basic threaded sleeve (10) in sequence; the root of the wing (21) is in hinged fit with the top end face of the basic threaded sleeve (10), so that the wing (21) can do hinged swinging motion close to and away from the axis of the basic threaded sleeve (10); the setting element still includes clamping ring (22), clamping ring (22) are down along the axis direction of basic swivel nut (10), and the interior anchor ring of clamping ring (22) constitutes the receipts beam cavity that is used for contracting to restraint whole fin (21), and whole fin (21) all are located the tip outer wall of intramedullary nail and clamping ring (22) interior anchor ring between regional department this moment, and thereby whole fin (21) are because of the radial pressure who receives the interior anchor ring of clamping ring (22) radial locking intramedullary nail.
2. The intramedullary nail fixation anchor of claim 1, wherein: the outer side wing surface (21 a) of the wing piece (21) is a threaded surface, and the pressing ring (22) is a locking nut; when the fins (21) generate similar action towards the axis of the basic threaded sleeve (10), the thread surfaces of the fins (21) are combined together to form an external thread section which can be matched with the internal thread section at the inner ring surface of the pressure ring (22).
3. The intramedullary nail fixation anchor of claim 2, wherein: the shape of the fin (21) is in a water drop-shaped plate shape with the width gradually increased from the extension end to the hinged end, and the plate thickness of the fin (21) is gradually increased from the extension end to the hinged end.
4. The intramedullary nail fixation anchor of claim 1, 2 or 3, wherein: one end of the inner ring surface of the pressing ring (22) facing the basic threaded sleeve (10) is in a flared hole shape with a gradually expanded opening.
5. The intramedullary nail fixation anchor of claim 1, 2 or 3, wherein: a gap groove (11) for avoiding an intramedullary nail installation path is formed in the bottom end cylinder wall of the basic threaded sleeve (10) which extends into the marrow cavity of the clavicle; an indication mark (12) used for pointing to the direction of the notch groove (11) is arranged on the top end face of the basic screw sleeve (10).
6. The intramedullary nail fixation anchor of claim 5, wherein: the bottom end of the passing cavity of the basic threaded sleeve (10) is sealed, so that the passing cavity and the notch groove (11) are matched together to form an arc-shaped guide cavity channel for guiding the advancing direction of the intramedullary nail; the bottom surface of the lower thread section of the basic threaded sleeve (10) is attached to the bottom surface of the clavicle medullary cavity or forms hole-shaft fit with preset holes in the bottom surface of the clavicle medullary cavity.
7. The intramedullary nail fixation anchor of claim 1, wherein: the positioning piece comprises a set screw, radial threaded holes are arranged on the basic threaded sleeve (10), and the radial threaded holes are sequentially and uniformly distributed in a surrounding manner along the passing cavity; after the fastening screw is in threaded fit with the radial threaded hole, the top end of the fastening screw is in abutting fit with the outer wall of the intramedullary nail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011353974.XA CN112451073B (en) | 2020-11-26 | 2020-11-26 | Clavicle intramedullary nail fixing anchor and clavicle intramedullary nail fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011353974.XA CN112451073B (en) | 2020-11-26 | 2020-11-26 | Clavicle intramedullary nail fixing anchor and clavicle intramedullary nail fixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112451073A CN112451073A (en) | 2021-03-09 |
| CN112451073B true CN112451073B (en) | 2022-03-08 |
Family
ID=74808984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011353974.XA Active CN112451073B (en) | 2020-11-26 | 2020-11-26 | Clavicle intramedullary nail fixing anchor and clavicle intramedullary nail fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112451073B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5443466A (en) * | 1991-12-13 | 1995-08-22 | Shah; Mrugesh K. | Method and apparatus for treating fractures of a bone |
| CN201290756Y (en) * | 2008-11-13 | 2009-08-19 | 廖军 | Clavicle active lock-tail thread intramedullary pin device |
| CN101803943A (en) * | 2010-04-23 | 2010-08-18 | 刘志春 | Combined type clavicular intramedullary pin |
| CN106264700A (en) * | 2016-08-31 | 2017-01-04 | 李志强 | A kind of pivotal expansion bone nail |
| CN109662769A (en) * | 2018-11-30 | 2019-04-23 | 陈聚伍 | Through towed Medullary fixation device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1287271B1 (en) * | 1996-04-05 | 1998-08-04 | Antonio Chemello | ENDOMIDOLLAR NAIL FOR THE OSTEOSYNTHESIS OF LONG BONE FRACTURES |
| CN2375260Y (en) * | 1999-02-25 | 2000-04-26 | 杨哲忠 | Intramedullary nail |
| CN2562737Y (en) * | 2002-09-02 | 2003-07-30 | 宋文超 | Spring cross locked intramedullary nail |
| TWI678184B (en) * | 2014-04-25 | 2019-12-01 | 德派信迪思產品公司 | Aiming device system |
| CN208838130U (en) * | 2018-06-05 | 2019-05-10 | 常州市南翔医疗器械有限公司 | Femoral interlocking nail |
-
2020
- 2020-11-26 CN CN202011353974.XA patent/CN112451073B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5443466A (en) * | 1991-12-13 | 1995-08-22 | Shah; Mrugesh K. | Method and apparatus for treating fractures of a bone |
| CN201290756Y (en) * | 2008-11-13 | 2009-08-19 | 廖军 | Clavicle active lock-tail thread intramedullary pin device |
| CN101803943A (en) * | 2010-04-23 | 2010-08-18 | 刘志春 | Combined type clavicular intramedullary pin |
| CN106264700A (en) * | 2016-08-31 | 2017-01-04 | 李志强 | A kind of pivotal expansion bone nail |
| CN109662769A (en) * | 2018-11-30 | 2019-04-23 | 陈聚伍 | Through towed Medullary fixation device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112451073A (en) | 2021-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5370646A (en) | Bone clamp and installation tool | |
| JP5931924B2 (en) | Augmentable trochanteric femoral nail | |
| CN101601605B (en) | Intramedullary nail fixation device for fractured near end of thighbone | |
| US5098433A (en) | Winged compression bolt orthopedic fastener | |
| US9814501B2 (en) | Cannulated telescopic femoral neck screw device and related fixation method | |
| US5409486A (en) | Double threaded arthrodesis screw | |
| CA2386621A1 (en) | Threaded suture anchor | |
| JP6811498B2 (en) | Implants and methods for long bone fixation | |
| US10085779B2 (en) | Intramedullary device for mid-shaft clavicle fractures | |
| CN209966532U (en) | Pressure internal fixer capable of making two ends of fracture position between femur neck and tuberosity tightly combined | |
| CN112451073B (en) | Clavicle intramedullary nail fixing anchor and clavicle intramedullary nail fixing device | |
| US9402664B2 (en) | Dynamic intramedullary hardware | |
| CN201445555U (en) | Thigh bone near-end fracture intramedullary nail fixing device | |
| CN216797796U (en) | Intramedullary fixing device | |
| CN2540163Y (en) | Internal fixator for fracture of neck of femur | |
| CN2366066Y (en) | Intramedullary nail for-treating fracture of long tube like bone | |
| CN216754577U (en) | Proximal femur anti-rotation intramedullary nail | |
| CN2403374Y (en) | Combined self-locking intramedullary nail | |
| CN219250302U (en) | Medical anchor with wire | |
| CN220001893U (en) | Femoral intramedullary nail capable of preventing nail backing | |
| CN215688366U (en) | Implanting tool for implant of femoral neck fracture patient | |
| CN216603037U (en) | Minimally invasive pressurization intramedullary fixing system for olecranal fracture | |
| CN209847354U (en) | Medical implanted lag screw, intramedullary nail and fixing system | |
| CN2712293Y (en) | Self-locking intramedullary nail with rotary arm | |
| US20210282821A1 (en) | Compression nut, a system and a method for treating a bone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |