CN212308012U - Distal hole positioning device of intramedullary nail - Google Patents
Distal hole positioning device of intramedullary nail Download PDFInfo
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- CN212308012U CN212308012U CN202021742485.9U CN202021742485U CN212308012U CN 212308012 U CN212308012 U CN 212308012U CN 202021742485 U CN202021742485 U CN 202021742485U CN 212308012 U CN212308012 U CN 212308012U
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Abstract
The utility model discloses a distal end hole positioner of intramedullary nail, which comprises a bracket, the probe, the sight, the benchmark gyroscope, probe gyroscope and reading device, the support is suitable for the near-end with the intramedullary nail to be connected, the probe stretches into in the intramedullary nail from the near-end of intramedullary nail, the sight is installed on the support adjustably, a distal end hole for aiming the intramedullary nail, the benchmark gyroscope is installed on the support and is adjustable together with the sight, the probe gyroscope is established on the probe and the distal end hole of neighbouring intramedullary nail, reading device links to each other with probe gyroscope and benchmark gyroscope, an attitude data for reading probe gyroscope and benchmark gyroscope. The utility model discloses a positioner is convenient for fix a position the distal end hole of intramedullary nail, reduces the fixed time of intramedullary nail, improves the fixed success rate of intramedullary nail.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, concretely relates to far-end hole positioner of intramedullary nail.
Background
When treating a tubular fracture patient, the internal fixation technology of the intramedullary nail with a lock is widely applied clinically, the installation of the distal locking nail of the intramedullary nail is a key link of the technology, and the accuracy of the position positioning of the distal nail hole of the intramedullary nail directly influences the operation difficulty and the operation quality.
In the related technology, the location of the distal nail hole of the intramedullary nail mainly comprises three ways, namely firstly, searching the hole position by means of X-ray imaging equipment in the operation, but the way has high requirements on the operation experience of doctors, and X-rays can generate a large amount of radiation to hurt medical staff and patients. Secondly, a limiting and aiming technology of the positioning rod is adopted, but in the mode, a drill hole needs to be added on the bone tissue, so that the operation steps are multiple, and extra trauma is also added to a patient. Thirdly, a magnetic aiming and positioning technology is adopted, but in the operation drilling process, the drill bit slides and deviates due to the fact that the cutting edge of the drill bit is not sharp or the drilling speed is high, and the drilling direction is deviated.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent.
To this end, an embodiment of an aspect of the present invention provides a distal hole positioning device for an intramedullary nail, which facilitates positioning of the distal hole of the intramedullary nail, so as to reduce the time for fixing the intramedullary nail and improve the success rate of fixing the intramedullary nail.
According to the utility model discloses distal end hole positioner of intramedullary nail, include: a bracket adapted to be coupled to a proximal end of an intramedullary nail; a probe extending into the intramedullary nail from a proximal end of the intramedullary nail; an aimer adjustably mounted on the support for aiming at a distal hole of the intramedullary nail; a reference gyroscope mounted on a mount and adjustable with the sight; a probe gyroscope disposed on the probe and adjacent to the distal bore of the intramedullary nail; and the reading device is connected with the probe gyroscope and the reference gyroscope and is used for reading the attitude data of the probe gyroscope and the reference gyroscope.
According to the utility model discloses distal hole positioner of intramedullary nail, posture data through the benchmark gyroscope and the probe gyroscope that will read compares with the initial posture data of benchmark gyroscope and probe gyroscope when sight and distal hole calibration, confirm the intramedullary nail and implant the deflection angle of intramedullary nail distal end in the broken bone behind the broken bone, and realize the alignment of the distal hole of sight and intramedullary nail through adjusting sight and benchmark gyroscope, need not with the help of X-ray, operating procedure is simple, be convenient for fix a position intramedullary nail distal hole, can reduce the fixed time of intramedullary nail, improve the fixed success rate of intramedullary nail.
In some embodiments, the positioning device further comprises an aiming adjuster mounted on the carriage for adjusting the aiming arm and the reference gyroscope.
In some embodiments, the probe is provided with a scale value for reading the length of the probe extending into the intramedullary nail.
In some embodiments, the probe gyroscope and reference gyroscope are connected to the reading device either wirelessly or wirelessly.
In some embodiments, the bracket is coupled to the proximal end of the intramedullary nail by a threaded interface.
In some embodiments, the support comprises a support frame and a swing rod, the support frame is suitable for being connected with the proximal end of the intramedullary nail, the swing rod is swingably supported by the support frame, the sighting device and the reference gyroscope are mounted at one end of the swing rod, the other end of the swing rod is hinged with the support frame, and a pressing hand wheel is mounted on a pivot between the other end of the swing rod and the support frame.
According to another aspect of the present invention, a method for locating a distal hole of an intramedullary nail comprises the steps of:
connecting the proximal end of an intramedullary nail to be placed in a fractured bone with a bracket;
extending a probe provided with a probe gyroscope into the intramedullary nail so that the probe gyroscope reaches near a distal hole of the intramedullary nail;
aligning a sighting device provided with a reference gyroscope to a distal hole of the intramedullary nail and reading initial posture data of the probe gyroscope and the reference gyroscope;
removing the probe from within the intramedullary nail and separating the intramedullary nail from the stent;
placing the intramedullary nail into a fractured bone;
extending the probe into the intramedullary nail such that the probe gyroscope reaches near a distal hole of the intramedullary nail;
adjusting the sight and the reference gyroscope to make attitude data of the reference gyroscope and probe gyroscope respectively the same as the initial attitude data and locking the sight, thereby determining alignment of the sight with the distal hole of the intramedullary nail.
According to the utility model discloses the distal hole location method of intramedullary nail of on the other hand embodiment, adjust the position of sight and benchmark gyroscope, make the gesture data of benchmark gyroscope and probe gyroscope the same with initial gesture data respectively, confirm from this that the distal hole of sight and intramedullary nail aligns, need not with the help of X-ray, operating procedure is simple, is convenient for fix an position intramedullary nail distal hole, can reduce the fixed time of intramedullary nail, improves the fixed success rate of intramedullary nail.
In some embodiments, the position of the probe gyroscope within the intramedullary nail is determined based on graduation marks on the probe.
Drawings
Fig. 1 is a schematic structural view of a distal hole locating device of an intramedullary nail according to an embodiment of the present invention.
Fig. 2 is a top view of the positioning device shown in fig. 1.
Reference numerals:
the intramedullary nail comprises an intramedullary nail 1, a distal end hole 101, a support 2, a support frame 201, a swing rod 202, a probe 3, a sighting device 4, a reference gyroscope 5, a probe gyroscope 6, a sighting adjuster 7, a threaded interface 8, a pressing hand wheel 9 and a supporting leg 10.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
The following describes a distal hole positioning device for an intramedullary nail according to an embodiment of the present invention with reference to the accompanying drawings.
According to the utility model discloses distal hole positioner of intramedullary nail includes support 2, probe 3, sight 4, benchmark gyroscope 5, probe gyroscope 6 and reading device.
The support 2 is adapted to be coupled to a proximal end of the intramedullary nail 1, the probe 3 extends from the proximal end of the intramedullary nail 1 into the interior of the intramedullary nail 1, and the aimer 4 is adjustably mounted on the support 2. As shown in fig. 1, the aiming device 4 is fixedly connected with the support 2, the aiming device 4 is vertically arranged in the up-down direction (the up-down direction shown in fig. 1), and the aiming device 4 is used for aiming at a distal hole 101 of the intramedullary nail 1.
A reference gyroscope 5 is mounted on the stand 2 in close proximity to the sight 4, the reference gyroscope 5 being adjustable with the sight 4. The probe gyroscope 6 is provided on the probe 3 adjacent to the distal hole 101 of the intramedullary nail 1. Preferably, the probe gyro 6 is fixed to a head portion of the probe 3, i.e., a left end (left-right direction shown in fig. 1) of the probe 3, and a reading device (not shown) for reading attitude data of the probe gyro 6 and the reference gyro 5 is connected to the probe gyro 6 and the reference gyro 5.
According to the distal hole positioning device of the intramedullary nail of the present embodiment, by comparing the read attitude data of the reference gyroscope and the probe gyroscope with the initial attitude data of the reference gyroscope and the probe gyroscope at the time of aligning the collimator with the distal hole before the intramedullary nail is not inserted into the fractured bone, the collimator is aligned with the distal hole of the intramedullary nail and the attitude data of the probe gyroscope and the reference gyroscope at the time is read as the initial attitude data. The deflection angle of the far end of the intramedullary nail in the fractured bone after the intramedullary nail is implanted into the fractured bone is determined, the aiming of the sighting device and the far end hole of the intramedullary nail is realized by adjusting the sighting device and the reference gyroscope, the X-ray is not needed, the operation steps are simple, the far end hole of the intramedullary nail is conveniently positioned, the fixation time of the intramedullary nail can be shortened, and the success rate of the fixation of the intramedullary nail is improved.
In some embodiments, the positioning device further comprises an aiming adjuster 7 mounted on the stand 2 for adjusting the sighting device 4 and the reference gyroscope 5, the sighting device 4 and the reference gyroscope 5 being horizontally swingable about the aiming adjuster 7.
In some embodiments, the probe 3 is provided with a scale value for reading the length of the probe 3 extending into the intramedullary nail 1, and whether the probe gyroscope 6 reaches the position of the distal hole 101 of the intramedullary nail 1 is known by reading the scale value on the probe 3.
In some embodiments, probe gyroscope 6 and reference gyroscope 5 are connected to the reader device either wirelessly or wirelessly, but are not so limited.
In some embodiments, the stent 2 is connected to the proximal end of the intramedullary nail 1 by a threaded interface 8, but is not so limited.
In some embodiments, the stent 2 comprises a supporting frame 201 and a swinging rod 202, the supporting frame 201 is adapted to be connected with the proximal end of the intramedullary nail 1, and the swinging rod 202 is swingably supported by the supporting frame 201. Preferably, the pendulum 202 is provided with a leg 10 for stabilizing the pendulum 202, the sight 4 and the reference gyroscope 5 are mounted at one end of the pendulum 202, as shown in fig. 1, the sighting device 4 and the reference gyroscope 5 are installed at the left end of a swing link 202, the other end of the swing link 202 is hinged with a supporting frame 201, as shown in fig. 1, the right end of the swing link 202 is hinged with the supporting frame 201, the aiming adjuster 7 is installed at the hinged position of the swing link 202 and the supporting frame 201, the pressing hand wheel 9 is installed on the pivot between the other end of the swing link 202 and the supporting frame 201, namely, a pressing hand wheel 9 is arranged on a pivot between the right end of the swing rod 202 and the supporting frame 201, as shown in fig. 1, when the pressing handwheel 9 is released, the swing rod 202 can swing horizontally around the pivot, the pressing handwheel 9 is screwed, and the swing rod 202 and the support frame 201 are relatively fixed, i.e. the swing rod 202 is locked by the pressing handwheel 9, and then the position of the sighting device 4 is also fixed.
The following describes a distal hole 101 positioning device of an intramedullary nail 1 according to some specific examples of the present invention with reference to fig. 1 and 2.
The distal hole positioning device for intramedullary nail according to the present invention comprises a support 2, a probe 3, a collimator 4, a reference gyroscope 5, a probe gyroscope 6 and a reading device. The support 2 comprises a support frame 201 and a swing rod 202, the support frame 201 is suitable for being connected with the proximal end of the intramedullary nail 1, the swing rod 202 is supported by the support frame 201 in a swinging mode, the sighting device 4 and the reference gyroscope 5 are installed at the left end of the swing rod 202, the sighting device 4 is fixedly connected with the swing rod 202, the sighting device 4 is vertically arranged in the vertical direction, the right end of the swing rod 202 is hinged with the support frame 201, the aiming adjuster 7 is installed at the hinged position of the swing rod 202 and the support frame 201, a pressing hand wheel 9 is installed on a pivot between the right end of the swing rod 202 and the support frame 201, the pressing hand wheel 9 is loosened, the swing rod 202 can horizontally swing around the pivot, the pressing hand wheel 9 is screwed, the swing rod 202 and the support frame 201 are relatively fixed, namely the. The probe 3 extends into the intramedullary nail 1 from the proximal end of the intramedullary nail 1, the probe gyroscope 6 is fixed at the head of the probe 3, namely the left end of the probe 3, the probe gyroscope 6 is adjacent to the distal hole 101 of the intramedullary nail 1, and a reading device (not shown) is in wired or wireless connection with the probe gyroscope 6 and the reference gyroscope 5 and is used for posture data of the probe gyroscope 6 and the reference gyroscope 5.
The method of using the distal hole locating device for intramedullary nail according to the embodiments of the present invention will be described with reference to fig. 1 and 2.
Before use, the near end of an intramedullary nail 1 to be placed in a fractured bone is connected with a support 2, a probe 3 extends into the intramedullary nail 1 from the near end of the intramedullary nail 1, a probe gyroscope 6 extends into the intramedullary nail 1 along with the probe 3, the fact that the probe gyroscope 6 reaches the position near a far end hole 101 of the intramedullary nail 1 is determined according to scale values on the probe 3, and then a sighting device 4 provided with a reference gyroscope 5 is aligned to the far end hole 101 of the intramedullary nail 1 and initial posture data of the probe gyroscope 6 and the reference gyroscope 5 are read.
The method comprises the steps of taking out a probe 3 from the intramedullary nail 1, separating the intramedullary nail 1 from a support 2, placing the intramedullary nail 1 into a fractured bone, extending the probe 3 into the intramedullary nail 1, adjusting a sighting device 4 and a reference gyroscope 5 after a probe gyroscope 6 reaches the position close to a distal hole 101 of the intramedullary nail 1, enabling attitude data of the reference gyroscope 5 and the probe gyroscope 6 to be respectively the same as initial attitude data, locking the sighting device 4, determining that the sighting device 4 is aligned with the distal hole 101 of the intramedullary nail 1, and further matching screws with the distal hole 101 of the intramedullary nail to fix the intramedullary nail on the fractured bone.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (6)
1. A distal hole positioning device for an intramedullary nail, comprising:
a bracket adapted to be coupled to a proximal end of an intramedullary nail;
a probe extending into the intramedullary nail from a proximal end of the intramedullary nail;
an aimer adjustably mounted on the support for aiming at a distal hole of the intramedullary nail;
a reference gyroscope mounted on a mount and adjustable with the sight;
a probe gyroscope disposed on the probe and adjacent to the distal bore of the intramedullary nail;
and the reading device is connected with the probe gyroscope and the reference gyroscope and is used for reading the attitude data of the probe gyroscope and the reference gyroscope.
2. The intramedullary nail distal hole locating device of claim 1, further comprising an aiming adjuster mounted on the bracket for adjusting the aimer and the reference gyroscope.
3. The distal hole locating device of intramedullary nail of claim 1, wherein said probe is provided with scale values for reading the length of said probe extending into said intramedullary nail.
4. The intramedullary nail distal hole locating device of any one of claims 1-3, wherein the probe gyroscope and reference gyroscope are connected to the reading device either wirelessly or wirelessly.
5. The distal hole positioning device of an intramedullary nail of any one of claims 1 to 3, wherein the bracket is connected to the proximal end of the intramedullary nail by a threaded interface.
6. The distal hole positioning device of intramedullary nail of any one of claims 1 to 3, wherein the support comprises a support frame and a swing link, the support frame is adapted to be connected with the proximal end of the intramedullary nail, the swing link is swingably supported by the support frame, the sighting device and the reference gyroscope are mounted at one end of the swing link, the other end of the swing link is hinged with the support frame, and a pressing hand wheel is mounted on a pivot between the other end of the swing link and the support frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021742485.9U CN212308012U (en) | 2020-08-19 | 2020-08-19 | Distal hole positioning device of intramedullary nail |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021742485.9U CN212308012U (en) | 2020-08-19 | 2020-08-19 | Distal hole positioning device of intramedullary nail |
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| CN212308012U true CN212308012U (en) | 2021-01-08 |
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| CN202021742485.9U Active CN212308012U (en) | 2020-08-19 | 2020-08-19 | Distal hole positioning device of intramedullary nail |
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| CN (1) | CN212308012U (en) |
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