CN209932951U - Bone block fixing screw - Google Patents
Bone block fixing screw Download PDFInfo
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- CN209932951U CN209932951U CN201822249094.2U CN201822249094U CN209932951U CN 209932951 U CN209932951 U CN 209932951U CN 201822249094 U CN201822249094 U CN 201822249094U CN 209932951 U CN209932951 U CN 209932951U
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- bone block
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- 230000003000 nontoxic effect Effects 0.000 description 2
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Abstract
The utility model provides a bone piece set screw, this bone piece set screw includes: the nail post, the nail cap and the traction rope; the nail cap is arranged at the top end of the nail post, and the side wall of the nail post is provided with an external thread; the bottom end of the nail post is provided with a through hole, and the traction rope penetrates through the through hole; in wearing to establish the second mounting hole on the scapula with the haulage rope during the operation, later through drawing the haulage rope so that the nail post removes to the second mounting hole, support the outside at the second mounting hole until the bottom of nail post, in the nail post can be accurate penetrates the second mounting hole, bone piece set screw's installation is comparatively simple, has reduced the operation degree of difficulty.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially, relate to a bone block set screw.
Background
Recurrent shoulder dislocation refers to the repeated dislocation of the shoulder joint caused by the accidental movement of the patient in daily life due to the failure of the injured joint capsule and labrum to repair in time after the first trauma; therefore, how to treat recurrent shoulder dislocation becomes a hot point of research.
In the prior art, a part of a bone block is usually cut on a patient's coracoid process, and then the bone block is fixed on a scapula outside a patient's labrum through a bone block fixing screw, so that the bone block can prevent spherical articular cartilage from being detached from the labrum, and further prevent the shoulder joint from being dislocated. The bone block set screw includes: a nail post and a nail cap; the side wall of the nail post is provided with an external thread, and the top cap is arranged at the top end of the nail post; during operation, firstly cutting a part of bone block on a coracoid process of a patient, and drilling a first mounting hole on the bone block; drilling a second mounting hole on the scapula; and then the bone block is attached to the scapula, the first mounting hole is just opposite to the second mounting hole, the front end of the guide pipe is abutted against the bone block, the guide pipe is communicated with the first mounting hole, the bone block fixing screw is placed in the guide pipe, the nail column is arranged in the first mounting hole in a penetrating mode, the nail column is twisted through the twisting nail column, the nail column is gradually screwed into the second mounting hole under the action of the external thread, and then the bone block is fixed to the scapula to complete the operation.
However, in the prior art, when the bone block fixing screw is installed, the screw needs to be guided by the guide tube, so that the screw column is inserted into the first installation hole; after the front end of stand pipe supported on the bone piece, the front end of stand pipe moved on the bone piece easily, and then leads to the stand pipe can not just to first mounting hole for bone piece set screw is difficult to accurate wearing to establish in first mounting hole, and bone piece set screw installation is difficult, and the operation degree of difficulty is big.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a bone piece set screw to solve and use the stand pipe among the prior art to lead to the screw, the front end of stand pipe supports the back on the bone piece, and the front end of stand pipe moves on the bone piece easily, and the bone piece set screw installation difficulty that leads to, the technical problem that the operation degree of difficulty is big.
The utility model provides a bone block set screw, include: the nail post, the nail cap and the traction rope; the nail cap is arranged at the top end of the nail column, and an external thread is arranged on the side wall of the nail column; the bottom end of the nail post is provided with a through hole, and the traction rope is arranged in the through hole in a penetrating mode.
In the bone block fixing screw as described above, preferably, the bottom end of the stud is provided with a guide portion, and the through hole is provided on the guide portion.
In the bone block fixing screw as described above, preferably, the bottom end of the guide portion is provided with a guide cone.
In the bone block fixing screw, preferably, a receiving groove is formed in a side wall of the guide portion, and the traction rope outside the through hole is received in the receiving groove.
The bone block fixing screw as described above, preferably, the post comprises a first section and a second section, the top end of the first section is connected with the nut, and the top end of the second section is connected with the bottom end of the first section; the via hole is arranged at the bottom end of the second section; the external threads are disposed on a sidewall of the second section.
The bone block fixation screw as described above, preferably, the external thread has an outer diameter greater than a diameter of the first section.
In the bone block fixing screw as described above, preferably, the nut is provided with a driving portion.
In the bone block fixing screw as described above, preferably, the driving part includes a cross-shaped recess provided at a tip end of the nut.
In the bone block fixation screw as described above, preferably, an end of the nut facing the post has a flat surface perpendicular to the post axis.
The bone block fixation screw as described above, preferably, the pull string is a nylon string.
The utility model provides a bone block fixing screw, which is characterized in that a screw cap is arranged at the top end of a screw post, and an external thread is arranged on the side wall of the screw post; a through hole is formed in the bottom end of the nail column, and the traction rope penetrates through the through hole; in wearing to establish the second mounting hole on the scapula with the haulage rope during the operation, later through drawing the haulage rope so that the nail post removes to the second mounting hole, support the outside at the second mounting hole until the bottom of nail post, in the nail post can be accurate penetrates the second mounting hole, bone piece set screw's installation is comparatively simple, has reduced the operation degree of difficulty.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a bone block fixing screw according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a bone block set screw provided in an embodiment of the present invention;
fig. 3 is a partially enlarged view of a portion a in fig. 2.
Description of reference numerals:
10. a nail cap;
20. nailing columns;
30. a hauling rope;
40. a guide portion;
50. a guide cone;
201. a first stage;
202. a second stage;
2021. and (4) external threads.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Fig. 1 is a schematic structural view of a bone block fixing screw according to an embodiment of the present invention; fig. 2 is a cross-sectional view of a bone block set screw provided in an embodiment of the present invention; fig. 3 is a partially enlarged view of a portion a in fig. 2.
Please refer to fig. 1-3. The present embodiment provides a bone block fixation screw, comprising: the nail post 20, the nail cap 10 and the traction rope 30; the nail cap 10 is arranged at the top end of the nail post 20, and the side wall of the nail post 20 is provided with an external thread 2021; the bottom end of the stud 20 is provided with a through hole, and the traction rope 30 penetrates through the through hole.
Specifically, the material of the stud 20 in this embodiment may be various, for example; the nail post 20 can be made of stainless steel material so as to prevent the nail post 20 from rusting in the body and further influencing the body of a patient; alternatively, the post 20 may be constructed primarily of ceramic or plastic. It should be noted that the material of the nail post 20 is required to be non-toxic and harmless, so as to prevent the toxic substances on the nail post 20 from entering the tissue of the patient after the operation and affecting the normal life of the patient.
In the present embodiment, the stud 20 is preferably a titanium alloy stud. The titanium alloy is non-toxic, and has small density, high strength and good affinity with human body.
The titanium alloy is formed by adding other elements into titanium element as a base, has better corrosion resistance and high specific strength, and is widely applied to artificial organs, medical devices implanted into human bodies and the like.
The nail head 10 can be connected with the top end of the nail column 20 through welding or bolting, or the nail head 10 is integrally formed with the nail column 20 through casting. The shape of the nut 10 in this embodiment may be various, for example: the nail cap 10 can be in a regular shape such as a round plate shape and a semispherical shape, or the nail cap 10 can be in other irregular shapes; so long as it is ensured that the nut 10 can abut against the bone block so as to prevent the nut 10 from entering the first mounting hole. Preferably, the contact area between the nail cap 10 and the bone block is increased as much as possible to reduce the pressure between the nail cap 10 and the bone block and avoid the excessive pressure between the nail cap 10 and the bone block from crushing the bone block at the edge of the first mounting hole.
Specifically, the external threads 2021 may be distributed on the entire sidewall of the stud 20, that is, the external threads 2021 are continuously disposed on the sidewall of the stud 20, and at this time, it is required to ensure that the aperture of the first mounting hole is larger than the outer diameter of the external threads 2021, and at the same time, the aperture of the second mounting hole is smaller than the outer diameter of the external threads 2021; thus, when the stud 20 is screwed into the second mounting hole, the external thread 2021 in the first mounting hole does not drive the bone block to move; meanwhile, the external thread 2021 taps an internal thread matched with the external thread 2021 on the side wall of the second mounting hole on the scapula, and the bone block is pressed on the scapula by matching with the internal thread 2021, so that the bone block is fixed.
Preferably, the profile of the external thread 2021 in this embodiment may be triangular, and of course, the profile of the external thread 2021 may also be rectangular or trapezoidal. The thread lead angle of the external thread 2021 is reasonably set so that the thread lead angle is smaller than the equivalent friction angle of a screw pair formed by the scapula and the external thread 2021, and the external thread 2021 has a self-locking function so as to prevent the external thread 2021 from loosening in the second mounting hole after installation and further gradually retreating from the second mounting hole.
It should be noted that, the length of the nail post 20 needs to be greater than the thickness of the bone block, and after the nail post 20 is inserted into the first mounting hole, the bottom end of the nail post 20 passes through the first mounting hole and is located outside the bone block, so as to screw the nail post 20 into the second mounting hole.
Specifically, the via hole in this embodiment may be provided on the sidewall of the stud 20 near the bottom end, the center line of the via hole is perpendicular to the axis of the stud 20, and the via hole penetrates through the entire stud 20. Or a via hole is formed in the bottom end of the stud 20, an opening is correspondingly formed in the bottom end of the stud 20, the center line of the via hole is a curve at the moment, so that the other opening of the via hole is formed in the side wall of the stud 20, and the traction rope 30 penetrates through the via hole from the opening in the bottom end and penetrates out from the other opening in the side wall of the stud 20; or the center line of the via hole is semicircular, and both openings of the via hole are positioned at the bottom end of the nail post 20.
The traction rope 30 in this embodiment can be various, as long as it can pull the stud 20 and the bone block to move; for example: the hauling rope 30 can be a steel wire rope, and the strength of the steel wire rope is high, so that the hauling rope 30 is prevented from being broken due to overlarge pulling force when the hauling rope 30 is pulled; in addition, the hardness of the steel wire rope is high, so that the traction rope 30 can be prevented from being rubbed with the side walls of the first mounting hole and the second mounting hole when the traction rope 30 is pulled, and the traction rope 30 is prevented from being broken.
Preferably, the pull cord 30 is a nylon cord. The nylon rope has small hardness and is convenient to bend. In other embodiments, the pull cord 30 may be a hemp cord, or the like.
The installation process of the bone block fixing screw provided by the embodiment is as follows: firstly, cutting a bone block on a coracoid process of a patient, and then forming a first mounting hole on the bone block; the stud 20 of the screw is arranged in the first mounting hole in a penetrating way, and the traction rope 30 is arranged in the through hole on the stud 20 in a penetrating way; then drilling a second mounting hole in the scapula, wherein the second mounting hole penetrates through the whole scapula, using a guide needle with the diameter smaller than that of the second mounting hole, enabling two ends of the traction rope 30 to penetrate through the second mounting hole, enabling two ends of the traction rope 30 to enter from one end of the second mounting hole, stay at the outer side of the other end after penetrating through the second mounting hole, and then taking out the guide needle; then, drawing the two ends of the traction rope 30, so that the traction rope 30 drives the nail post 20 and the bone block to move towards the scapula; because the traction rope 30 is arranged in the through hole at the bottom end of the nail post 20 in a penetrating way, when the nail post 20 moves, the bottom end of the nail post 20 is closer to the scapula than the top end of the nail post 20; when the pulling rope 30 is pulled to the limit, the bottom end of the stud 20 just props against the opening of the second mounting hole; and then, the nail column 20 is twisted so that the nail column 20 is gradually screwed into the second mounting hole, and meanwhile, the external thread 2021 on the nail column 20 taps an internal thread matched with the external thread on the side wall of the second mounting hole until the bone block abuts against the shoulder blade, so that the mounting of the bone block fixing screw is completed.
The bone block fixing screw provided by the embodiment; the top end of the nail post 20 is provided with the nail cap 10, and the side wall of the nail post 20 is provided with an external thread 2021; a through hole is formed at the bottom end of the nail post 20, and the traction rope 30 penetrates through the through hole; wear to establish in the second mounting hole on the scapula with haulage rope 30 during the operation, later through drawing haulage rope 30 so that post 20 removes to the second mounting hole, supports the outside of pushing up at the second mounting hole until the bottom of post 20, in post 20 can be accurate penetrates the second mounting hole, bone piece set screw's installation is comparatively simple, has reduced the operation degree of difficulty.
With continued reference to fig. 1 and 2. Specifically, the bottom end of the stud 20 is provided with a guide portion 40, and a via hole is provided on the guide portion 40. Pulling the pulling rope 30 can make the guiding part 40 penetrate into the second mounting hole, and then the stud 20 is twisted to screw the stud 20 into the second mounting hole; so as to avoid the difficulty of aligning the bottom end of the post 20 with the second mounting hole when twisting the post 20.
Preferably, the shape of the guiding portion 40 in this embodiment can be various, for example, the guiding portion 40 can be cylindrical, the center line of the guiding portion 40 is arranged in line with the axis of the stud 20, and the diameter of the guiding portion 40 should be smaller than the diameter of the second mounting hole, so that when the guiding portion 40 is pulled by the traction rope 30, the guiding portion 40 can drive the stud 20 and the bone block to move towards the scapula, and the guiding portion 40 can be directly inserted into the second mounting hole; correspondingly, a through hole is formed in the side wall of the guide part 40 towards the inside, two openings of the through hole are both positioned on the side wall of the guide part 40, the center line of the through hole is a straight line, and the center line is perpendicular to the center line of the guide part 40; the via is located as close as possible to the end of the guide 40 facing away from the post 20. Of course, the guide portion 40 may have a hemispherical shape, and in this case, the bottom surface of the guide portion 40 is connected to the stud 20.
Preferably, the guide portion 40 may be connected to the stud 20 by welding, or the guide portion 40 may be integrally formed with the stud 20 by casting.
With continued reference to fig. 1 and 2. Specifically, the bottom end of the guide portion 40 is provided with a guide cone 50. The guide cone 50 can guide the guide part 40, when the conical surface of the guide cone 50 contacts with the side wall of the second mounting hole, the guide cone 50 can enter the second mounting hole along the conical surface by pulling the traction rope 30, so that the bottom end of the guide part 40 is prevented from abutting against the shoulder blade at the edge of the second mounting hole, and further the guide part 40 is prevented from entering the second mounting hole,
in the present embodiment, the guide cone 50 is preferably conical, the bottom surface of the cone is connected with the bottom end of the guide part 40 away from the nail post 20, and the center line of the guide cone 50 is arranged in the same line with the axis of the nail post 20.
In other embodiments, the guide cone 50 may be pyramid-shaped, such as: triangular pyramids, rectangular pyramids, and the like. It should be noted that, when the guiding cone 50 is pyramid-shaped, a rounded corner is required to be disposed on the side edge of the pyramid, so as to prevent the side edge from scratching the tissue of the patient when the pyramid moves.
Preferably, the guide cone 50 and the guide portion 40 may be connected by welding in the present embodiment, or the guide cone 50 and the guide portion 40 may be integrally formed by casting.
The installation process of the bone block fixing screw provided by the embodiment is as follows: firstly, cutting a bone block on a coracoid process of a patient, and then forming a first mounting hole on the bone block; the nail post 20 is arranged in the first mounting hole in a penetrating way, and the traction rope 30 is arranged in the through hole on the nail post 20 in a penetrating way; then, drilling a second mounting hole in the scapula, wherein the second mounting hole penetrates through the whole scapula, using a guide needle with the diameter smaller than that of the second mounting hole, enabling two ends of the traction rope 30 to penetrate through the second mounting hole, enabling two ends of the traction rope 30 to enter from one end of the second mounting hole, stopping at the outer side of the other end after penetrating through the second mounting hole, and then taking out the guide needle; then, drawing the two ends of the traction rope 30, so that the traction rope 30 drives the guide part 40, the guide cone 50, the stud 20 and the bone block to move towards the scapula; because the traction rope 30 is arranged in the through hole on the guide part 40 at the bottom end of the nail post 20 in a penetrating way, when the nail post 20 moves, the guide cone 50 is closer to the scapula than the top end of the nail post 20 and the bone block; the guide cone 50 firstly enters the second mounting hole, and then the guide part 40 enters the second mounting hole under the guide effect of the guide cone 50; when the pulling rope 30 is pulled to the limit, the bottom end of the stud 20 just props against the opening of the second mounting hole; and then, the nail column 20 is twisted so that the nail column 20 is gradually screwed into the second mounting hole, and meanwhile, the external thread 2021 on the nail column 20 taps an internal thread matched with the external thread on the side wall of the second mounting hole until the bone block abuts against the shoulder blade, so that the mounting of the bone block fixing screw is completed.
With continued reference to fig. 1 and 2. Specifically, a receiving groove is provided on a side wall of the guide portion 40, and the pulling rope 30 outside the via hole is received in the receiving groove. So as to avoid when drawing haulage rope 30, haulage rope 30 with the contact of guide part 40 is outwards protruding by guide part 40, and the haulage rope 30 that leads to and the lateral wall of second mounting hole take place the friction between, and then avoid haulage rope 30 fracture.
Specifically, the holding tank is two, and two holding tanks set up respectively on the guide part 40 in the two opening outsides of via hole for the haulage rope 30 that stretches out by the via hole both ends all holds in the holding tank.
Continuing with fig. 1-3. Preferably, the nail post 20 comprises a first section 201 and a second section 202, wherein the top end of the first section 201 is connected with the nail cap 10, and the top end of the second section 202 is connected with the bottom end of the first section 201; the via hole is arranged at the bottom end of the second section 202; external threads 2021 are provided on the sidewall of the second section 202. Do not set up external screw thread 2021 on the first section 201 with first mounting hole complex, can avoid when rotatory nail post 20, drive the bone piece and remove for bone piece installation accuracy is not enough.
It should be noted that, at this time, the aperture of the first mounting hole and the aperture of the second mounting hole may be the same, that is, the aperture of the first mounting hole and the aperture of the second mounting hole are both smaller than the outer diameter of the external thread 2021; the first mounting hole and the second mounting hole can be formed through the same bone drill, and the number of surgical tools is reduced. During operation, a bone block can be cut on the coracoid process of a patient, a first mounting hole is drilled on the coracoid process through a bone drill, the second section 202 is screwed into the first mounting hole, and the second section 202 completely passes through the first mounting hole, and the first section 201 is positioned in the first mounting hole; since the second section 202 is threaded into the first mounting hole when it passes through the first mounting hole, the internal threads and the external threads 2021 engage to prevent the bone block from disengaging from the post 20 when the bone block fixation screw and the bone block are moved.
With continued reference to fig. 2 and 3. Preferably, the external thread 2021 has an outer diameter greater than the diameter of the first section 201. Increasing the outer diameter of the external thread 2021 can enhance the connection strength between the external thread 2021 and the scapula so as to prevent the post 20 from falling out of the second mounting hole after the operation.
Specifically, the nut 10 is provided with a driving portion. The driving part on the nail cap 10 is driven to drive the nail post 20 to rotate, so that the nail post 20 is screwed into the second mounting hole, and the operation is convenient.
Preferably, the driving part may be various, for example: the driving part can be a driving groove with a hexagonal section formed on the nail head 10, and a driving column with six sides can be arranged in the driving groove in a penetrating way during installation, so that the nail head 10 is twisted by the driving column to drive the nail column 20 to rotate; or the driving part can be a clamping column with a hexagonal cross section arranged on the nail head 10, and a wrench matched with the clamping column can be adopted to drive the clamping column to rotate during installation, so as to drive the nail column 20 to rotate.
The present embodiment preferably includes a cross recess that is inwardly recessed at the top end of the nut 10. The bone block fixing screws are installed through the cross screwdriver matched with the cross groove, and the cross groove is not easy to damage by the cross screwdriver.
The installation process of the bone block fixing screw provided by the embodiment is as follows: firstly, cutting a bone block on a coracoid process of a patient, and then forming a first mounting hole on the bone block; the nail post 20 is arranged in the first mounting hole in a penetrating way, and the traction rope 30 is arranged in the through hole on the nail post 20 in a penetrating way; then, drilling a second mounting hole in the scapula, wherein the second mounting hole penetrates through the whole scapula, using a guide needle with the diameter smaller than that of the second mounting hole, enabling two ends of the traction rope 30 to penetrate through the second mounting hole, enabling two ends of the traction rope 30 to enter from one end of the second mounting hole, stopping at the outer side of the other end after penetrating through the second mounting hole, and then taking out the guide needle; then, drawing the two ends of the traction rope 30, so that the traction rope 30 drives the guide part 40, the guide cone 50, the stud 20 and the bone block to move towards the scapula; because the traction rope 30 is arranged in the through hole on the guide part 40 in a penetrating way, when the nail column 20 moves, the guide cone 50 is closer to the scapula than the top end of the nail column 20 and the bone block; the guide cone 50 firstly enters the second mounting hole, and then the guide part 40 enters the second mounting hole under the guide effect of the guide cone 50; in the process of pulling the plate pulling rope 30, the pulling rope 30 is tensioned after being pulled, so that the pulling rope 30 on the side wall of the guide part 40 is accommodated in the accommodating groove; when the pulling rope 30 is pulled to the limit, the bottom end of the stud 20 just props against the opening of the second mounting hole; and then, the cross screwdriver is matched with the cross groove on the screw cap 10, the screw column 20 is further twisted through the cross screwdriver, so that the screw column 20 is gradually screwed into the second mounting hole, meanwhile, the external thread 2021 on the screw column 20 taps an internal thread matched with the second mounting hole on the side wall of the second mounting hole until the bone block abuts against the scapula, and the bone block fixing screw is installed.
In this embodiment, the end of the nut 10 facing the post 20 has a flat surface perpendicular to the axis of the post 20. When the bone block fixing device is used, the plane is attached to a bone block, so that the bone block damage caused by the contact of the nail cap 10 and the bone block can be avoided.
In the present invention, unless explicitly stated otherwise, the terms "mounting," "connecting," "fixing," and the like are to be understood in a broad sense, and for example, may be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, or communicable with each other; they may be directly connected or indirectly connected through an intermediate medium, or they may be connected internally or in any other manner known to those skilled in the art, unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A bone block fixation screw comprising: the nail post, the nail cap and the traction rope; the nail cap is arranged at the top end of the nail column, and an external thread is arranged on the side wall of the nail column; the bottom end of the nail post is provided with a through hole, and the traction rope is arranged in the through hole in a penetrating mode.
2. The bone block fixation screw of claim 1, wherein a guide portion is provided at a bottom end of the post, the via being provided on the guide portion.
3. The bone block fixation screw of claim 2, wherein a bottom end of the guide portion is provided with a guide cone.
4. The bone block fixation screw of claim 2, wherein a receiving groove is provided in a sidewall of the guide portion, the pull cord outside the aperture being received in the receiving groove.
5. The bone block fixation screw of any one of claims 1-4, wherein the post includes a first section and a second section, a top end of the first section being connected to the nut, a top end of the second section being connected to a bottom end of the first section; the via hole is arranged at the bottom end of the second section; the external threads are disposed on a sidewall of the second section.
6. The bone block fixation screw of claim 5, wherein the external thread has an outer diameter greater than a diameter of the first segment.
7. The bone block fixation screw of any one of claims 1-4, wherein a driver portion is provided on the nut.
8. The bone block fixation screw of claim 7, wherein the drive portion includes a cross-slot disposed at a top end of the nut.
9. The bone block fixation screw of any one of claims 1-4, wherein an end of the nut facing the post has a flat surface perpendicular to the post axis.
10. The bone block fixation screw of any one of claims 1-4, wherein the pull string is a nylon string.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822249094.2U CN209932951U (en) | 2018-12-29 | 2018-12-29 | Bone block fixing screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822249094.2U CN209932951U (en) | 2018-12-29 | 2018-12-29 | Bone block fixing screw |
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| Publication Number | Publication Date |
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| CN209932951U true CN209932951U (en) | 2020-01-14 |
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| CN201822249094.2U Active CN209932951U (en) | 2018-12-29 | 2018-12-29 | Bone block fixing screw |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111374748A (en) * | 2018-12-29 | 2020-07-07 | 北京大学第三医院 | Bone block fixing screw |
-
2018
- 2018-12-29 CN CN201822249094.2U patent/CN209932951U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111374748A (en) * | 2018-12-29 | 2020-07-07 | 北京大学第三医院 | Bone block fixing screw |
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| TR01 | Transfer of patent right |
Effective date of registration: 20230324 Address after: 264200 No.26 Xiangjiang street, Weihai tourist resort, Shandong Province Patentee after: SHANDONG WEIGAO ORTHOPEDIC DEVICE Co.,Ltd. Address before: Department of Sports Medicine, Peking University Third Hospital, No. 49 Huayuan North Road, Haidian District, Beijing, 100191 Patentee before: PEKING UNIVERSITY THIRD Hospital |
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| TR01 | Transfer of patent right |