CN112890944A - Novel high-strength self-holding locking bolt screwdriver - Google Patents
Novel high-strength self-holding locking bolt screwdriver Download PDFInfo
- Publication number
- CN112890944A CN112890944A CN202110057888.2A CN202110057888A CN112890944A CN 112890944 A CN112890944 A CN 112890944A CN 202110057888 A CN202110057888 A CN 202110057888A CN 112890944 A CN112890944 A CN 112890944A
- Authority
- CN
- China
- Prior art keywords
- locking bolt
- screwdriver
- hole
- rod
- rubber coating
- 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.)
- Granted
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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
-
- 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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
- A61B2017/922—Devices for impaction, impact element
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Medical Informatics (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Surgical Instruments (AREA)
Abstract
The invention provides a novel high-strength self-holding locking bolt screwdriver which comprises a screwdriver rod and a fixing rubber coating, wherein the fixing rubber coating is made of a high polymer material. The far end of the screwdriver rod is provided with a fixing hole which comprises a counter bore and a through hole, the counter bore is positioned in the center of the far end face of the screwdriver rod, and the through hole takes the counter bore as the center and is distributed on the radial section of the screwdriver rod; filling counter bores and through holes through a rubber coating process to form fixed rubber coating with a specific structure, and protruding relative to a plum blossom outer contour structure of the screwdriver; when the screwdriver is matched with the locking bolt, the fixed rubber coating fills a clearance between the plum blossom structure of the screwdriver rod and the locking bolt, the rubber coating structure with a specific shape is formed at the matched locking part of the screwdriver rod and the locking bolt, self-holding is realized through interference fit, the head of the screwdriver rod has strong torsion resistance, and the screwdriver is convenient and quick to use, strong in practicability and wide in application range.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a novel high-strength self-sustaining locking bolt screwdriver.
Background
In an orthopedic surgery, such as an internal spinal fixation surgery, a corresponding vertebral body nail, a connecting rod and the like need to be implanted, and a screwdriver is generally needed to provide holding, taking and locking fixation effects on a locking bolt. In the existing operation, firstly, a screwdriver is required to hold and take a locking bolt to be screwed into the corresponding position of the vertebral nail in advance, the general head of the screwdriver is provided with a slot, the screwdriver generates elastic deformation when being matched with the locking bolt, the locking bolt is self-held, and after the corresponding operation is finished, the locking bolt is screwed in by using another screwdriver capable of bearing certain torsion and then is completely locked. From the above, it can be seen that two drivers are required in the prior art, that is, the strength of the torque-bearing portion of the instrument is reduced due to the slot on the head of the conventional driver rod with a self-supporting function, however, the torque-bearing portion at the distal end of the driver rod is relatively large when the locking portion is locked, and if the locking portion cannot bear the relatively strong torque, the locking is difficult to achieve, and the risk is relatively high during the operation.
To solve the problem of low torsional strength of a self-sustaining screw driver, the skilled person has conducted a great deal of research, for example:
patent CN104825224B provides a high strength self-holding type locking screwdriver, which realizes self-holding function by arranging a self-holding spring plate at the far end. This design has the following drawbacks: (1) the structure is complex, the installation difficulty is high, and the requirement on the precision of matched use is high; (2) the head of the instrument is provided with a slotted structure, so that the strength is greatly reduced, and risks such as fracture and the like are easy to occur when the instrument is used; (3) because the locking bolt structure is little, and the size is also less, this apparatus part is more, and the practicality is poor, and application scope is narrow.
Patent CN210871989U provides a self-holding lock nut driver, which comprises a sleeve, a push rod and a lock catch; when the push rod moves backwards along the axial direction of the sleeve, the push rod drives the front end of the buckling claw to open outwards along the radial direction of the sleeve, and the front end of the outer side wall of the buckling claw is provided with a hook part which hooks the nut when the buckling claw opens outwards, so that a self-holding function is realized. This design has the following drawbacks: (1) the whole structure of the instrument is complex, the number of accessories is large, and the installation is difficult; (2) the interior of the instrument is hollow, and the structure can weaken the strength of the whole structure of the instrument and has higher risk in use; (3) the self-supporting part of the instrument is complex to operate, and has no strong practicability in the operation.
Therefore, it is an urgent technical problem to provide a locking driver which is self-sustaining and has a strong torsion strength.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the novel high-strength self-sustaining locking bolt screwdriver which is simple in structure, less in operation steps, capable of realizing self-sustaining and strong in torsion resistance.
The invention adopts the following technical scheme for solving the technical problems:
a novel high-strength self-sustaining locking bolt screwdriver comprises a screwdriver rod and a fixing rubber coating, wherein the fixing rubber coating is made of high polymer materials; the far end of the screwdriver rod is provided with a fixing hole which comprises a counter bore and a through hole, the counter bore is positioned in the center of the far end face of the screwdriver rod, the through hole takes the counter bore as the center, is distributed on the radial section of the screwdriver rod and is provided with at least one through hole; filling the counter bore and the through hole through an encapsulation process to form the fixed encapsulation, wherein the fixed encapsulation protrudes relative to the other end, away from the counter bore, of the through hole; when the far end of the screwdriver rod is matched with the locking bolt, the fixed rubber coating fills a matched gap between the screwdriver rod and the locking bolt, and interference fit is achieved.
Preferably, the fixed rubber coating protrudes relative to the plum-blossom-shaped outer contour structure of the screwdriver rod.
Preferably, the fixing and encapsulating material has elasticity and can elastically deform under pressure.
Preferably, the counter bore comprises a proximal bore and a distal bore which are coaxially communicated, the bore diameter of the proximal bore is not distinguished by a specific size compared with the bore diameter of the distal bore, and the through bore is communicated with the proximal bore.
Preferably, the fixed rubber coating is matched with a cutting groove on the quincuncial structure to realize the limiting of the rubber coating.
Preferably, the inner hole of the locking bolt is in interference fit with the outer surface of the distal end of the screwdriver rod, and finally the holding and locking functions are achieved.
Further, the inner hole of the locking bolt and the outer surface of the far end of the screwdriver rod are in an inner quincunx shape and an outer quincunx shape which can be matched with each other.
Preferably, the through hole is located on a central axis of the plum blossom-shaped protrusion of the screwdriver rod, and the other end far away from the counter bore is located at the top of the plum blossom-shaped protrusion of the screwdriver rod.
Further, the fixed rubber coating protrudes relative to the top of the plum blossom protrusion.
Preferably, a cutting groove is formed in the top of the quincuncial protrusion and communicated with the through hole, and one end, close to the cutting groove, of the through hole is located at the center of the bottom of the cutting groove.
Preferably, the proximal end of the screwdriver rod is provided with a connecting structure matched with the driving device.
By adopting the technical scheme, compared with the prior art, the invention has the following technical effects:
(1) according to the high-strength self-sustaining locking bolt screwdriver, the rubber coating structure with the specific shape is formed at the locking part where the screwdriver rod is matched with the locking bolt, when the screwdriver rod is matched with the locking bolt, the fixed rubber coating fills the matched gap between the screwdriver rod and the locking bolt to form interference fit, and self-sustaining is realized;
(2) the locking part is only provided with the fixing hole with a specific shape, so that the locking screw rod has extremely strong torsion resistance, and compared with the existing self-holding screw rod, the locking screw rod has the advantages of high strength, large bearable torque, exquisite structure, convenience and rapidness in use, strong practicability, wide application range, capability of locking various bolts, great reduction of operation risk, improvement of operation efficiency and the like;
(3) the invention has simple structure and easy manufacture, and reduces the cost of the instrument.
Drawings
FIG. 1 is a schematic view of a high strength self-sustaining locking bolt driver according to the present invention;
FIG. 2 is a schematic cross-sectional view of area A-A of FIG. 1;
FIG. 3 is an enlarged view of the head of the screwdriver rod of FIG. 1;
FIG. 4 is a schematic sectional view taken along line B-B in FIG. 3;
FIG. 5 is a schematic view of a novel high strength self-sustaining locking bolt driver in combination with a locking bolt of the present invention;
FIG. 6 is a schematic sectional view B-B of the region III in FIG. 5;
the reference numerals denote the description:
1-screwdriver rod, 11-fixing hole, 111-counter bore, 112-through hole, 12-plum blossom protrusion top, 121-cutting slot, 2-fixing rubber coating and 3-locking bolt.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail below with reference to the accompanying drawings and examples.
As shown in fig. 1-6, the invention relates to a novel high-strength self-sustaining locking bolt screwdriver, belonging to the technical field of medical instruments and comprising a screwdriver rod 1 and a fixing rubber coating 2.
Specifically, fig. 1 shows the overall structure of the screwdriver rod 1, the distal end of the screwdriver rod 1 is provided with a locking part matched with the locking bolt 3, and the proximal end of the screwdriver rod 1 is provided with a structure matched with the driving device. As can be seen from fig. 3, the locking portion is in a quincunx shape, the top 12 of the quincunx protrusion is provided with a cutting slot 121 communicated with a through hole 112, one end of the through hole 112 close to the cutting slot 121 is located at the center of the cutting slot 121, and the distal end surface of the screwdriver rod 1 is smoothly processed.
Specifically, fig. 2 is a schematic sectional view a-a of a region I in fig. 1, that is, a schematic sectional view after the screw driver rod is encapsulated, and as can be seen from fig. 3-4, the fixing hole 11 includes a counter bore 111 and a through hole 112, the counter bore 111 is located in the center of the distal end face of the screw driver rod 1, the through hole 112 is communicated with the counter bore 111, and the through hole 112 is distributed on a radial section of the screw driver rod 1 with the counter bore 111 as the center, and at least one through hole is provided. And the through hole 112 is positioned on the central axis of the quincuncial protrusion of the screwdriver rod 1, and the other end of the through hole 112, which is far away from the counter bore 111, is communicated with the cutting notch 121 of the top 12 of the quincuncial protrusion on the outer surface of the screwdriver rod 1.
Specifically, as shown in fig. 2, during encapsulation, the fixed encapsulation 2 fills the counter bores 111 and the through holes 112 to form a star shape, and through the structural cooperation, the fixed encapsulation 2 is ensured to be firmly fixed at the locking part of the screwdriver rod 1, so that the encapsulation is prevented from falling off; and a single structure can be formed, so that the effect of holding and taking the locking bolt is achieved. The outermost end of the fixed rubber coating 2 is higher than the initial contour of the top 12 of the quincuncial protrusion, when the fixed rubber coating 2 is matched with the locking bolt 3, as shown in figures 5-6, interference fit is formed, the fixed rubber coating 2 fills a matched gap between the screwdriver rod 1 and the locking bolt 3, and the friction force between the locking part of the screwdriver rod 1 and the locking bolt 3 is increased due to the action of the radial elastic force of the fixed rubber coating 2, so that self-holding is realized.
Through the exquisite structure, the self-holding function is realized, the strength of the locking part of the screwdriver rod 1 is not influenced, the torsion resistance is strong, and the self-holding and the locking can be realized.
Example 1
Referring to fig. 1-6, the present embodiment provides a novel high-strength self-sustaining locking bolt screwdriver, which includes a screwdriver rod 1 and a fixing rubber coating 2, wherein a distal end of the screwdriver rod 1 is provided with a hexagonal quincunx locking portion engaged with a locking bolt 3, and a proximal end of the screwdriver rod 1 is provided with a structure capable of engaging with a driving device; the locking part is provided with a fixing hole 11 which comprises a counter bore 111 and a through hole 112, the counter bore 111 is positioned in the center of the far end face of the screwdriver rod 1, the counter bore 111 comprises a near end hole and a far end hole which are coaxially communicated, the aperture of the near end hole is smaller than that of the far end hole, the through hole 112 is communicated with the near end hole, the through hole 112 takes the near end hole as the center, the centers are symmetrically distributed on the radial cross section of the screwdriver rod 1, the central axis of the through hole 112 is coaxial with the central axis of the plum blossom protrusion of the screwdriver rod 1, the other end of the through hole 112, which is far away from the near end hole, is communicated with the cutting notch 121 of the plum blossom protrusion top 12 on.
In this embodiment, as shown in fig. 2, the fixing rubber coating 2 fills the counter bore 111 and the through hole 112 through the rubber coating process to form a star-shaped or single strip-shaped rubber coating structure, or through the cooperation of such a structure, the fixing rubber coating 2 is ensured to be firmly fixed at the locking part of the screwdriver rod 1, and the rubber coating is prevented from falling off; the outermost end of the fixed rubber coating 2 is higher than the initial contour of the top 12 of the quincuncial protrusion, when the fixed rubber coating 2 is matched with the locking bolt 3, as shown in figures 5-6, interference fit is formed, the fixed rubber coating 2 fills a matched gap between the screwdriver rod 1 and the locking bolt 3, and the friction force between the locking part of the screwdriver rod 1 and the locking bolt 3 is increased due to the action of the radial elastic force of the fixed rubber coating 2, so that self-holding is realized.
In the concrete operation, utilize above-mentioned self-sustaining function of screwdriver pole 1 to put into the centrum nail back with locking bolt 3, after corresponding operation steps are accomplished, lock locking bolt 3 through rotatory screwdriver pole 1 near-end, in operation process, screwdriver pole 1 need bear considerable moment of torsion, because the moment of torsion mainly bears by the proximal part of plum blossom structure on the screwdriver pole, near-end overall structure is still complete, although the distal part has the cutting fluting, but not too much weakening to the bearing strength of screwdriver pole 1, still can bear big moment of torsion, the great reduction of the risk of operation.
The embodiments of the present invention have been described in detail, but the embodiments are merely examples, and the present invention is not limited to the embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, equivalent changes and modifications made without departing from the spirit and scope of the present invention should be covered by the present invention.
Claims (8)
1. A novel high-strength self-sustaining locking bolt screwdriver is characterized by comprising a screwdriver rod (1) and a fixing rubber coating (2), wherein the fixing rubber coating (2) is made of a high polymer material; the far end of the screwdriver rod (1) is provided with a fixing hole (11) which comprises a counter bore (111) and a through hole (112), the counter bore (111) is located in the center of the far end face of the screwdriver rod (1), the through hole (112) takes the counter bore (111) as the center, is distributed on the radial cross section of the screwdriver rod (1), and is provided with at least one through hole (112); filling the counter bore (111) and the through hole (112) through an encapsulation process to form the fixed encapsulation (2), wherein the fixed encapsulation (2) protrudes relative to the plum blossom outer contour structure of the screwdriver; when the far end of the screwdriver rod (1) is matched with the locking bolt (3), the fixed rubber coating (2) fills a matched gap between the screwdriver rod (1) and the locking bolt (3).
2. A new high strength self-sustaining locking bolt driver as claimed in claim 1, characterized by the fact that the fixed encapsulation (2) protrudes with respect to the quincunx protruding top (12).
3. The new high strength self-sustaining locking bolt driver as set forth in claim 1, characterized in that said counter bore (111) comprises a proximal bore and a distal bore in coaxial communication, said through bore (112) communicating with said proximal bore.
4. The new high strength self-sustaining locking bolt driver as set forth in claim 1, characterized in that the fixed overmold (2) cooperates with the cutting slot (121) on the quincunx structure to achieve the spacing of the overmold.
5. A new high strength self-sustaining locking bolt driver as claimed in claim 1, characterized by that the inner bore of the locking bolt (3) and the outer surface of the distal end of the driver shaft (1) are of inner and outer quincunx shape which can be fitted to each other.
6. The novel high-strength self-sustaining locking bolt driver as claimed in claim 5, characterized in that the through hole (112) is located on the central axis of the quincunx protrusion of the driver rod (1), and the other end far away from the counter bore (111) is located on the top (12) of the quincunx protrusion of the driver rod (1).
7. The new high strength self-sustaining locking bolt driver as set forth in claim 6, characterized in that the quincuncial projection top (12) is provided with a cutting slot (121) communicating with the through hole (112), and one end of the through hole (112) near the cutting slot (121) is located at the center of the bottom of the cutting slot (121).
8. A new high strength self-sustaining locking bolt driver according to claim 1, characterized by that the proximal end of the driver rod (1) is provided with a connection structure to cooperate with a driving device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110057888.2A CN112890944B (en) | 2021-01-15 | 2021-01-15 | Self-holding locking bolt screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110057888.2A CN112890944B (en) | 2021-01-15 | 2021-01-15 | Self-holding locking bolt screwdriver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112890944A true CN112890944A (en) | 2021-06-04 |
| CN112890944B CN112890944B (en) | 2022-07-05 |
Family
ID=76113910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110057888.2A Active CN112890944B (en) | 2021-01-15 | 2021-01-15 | Self-holding locking bolt screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112890944B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2243315A1 (en) * | 1998-07-16 | 2000-01-16 | Willi Hahn Gmbh & Co. Kg | Screwdriver |
| JP3144450U (en) * | 2008-06-19 | 2008-08-28 | 大成ラミック株式会社 | Duckbill valve mounting structure |
| CN103393463A (en) * | 2013-07-16 | 2013-11-20 | 江苏双羊医疗器械有限公司 | Screwdriver |
| US20150209941A1 (en) * | 2014-01-28 | 2015-07-30 | Shyh-Ming Wang | Anti-disengagement structure of a tool head for a fastener |
| CN104825224A (en) * | 2015-05-19 | 2015-08-12 | 山东威高骨科材料股份有限公司 | High-strength self-supporting type locking screw driver |
| CN204765893U (en) * | 2015-05-19 | 2015-11-18 | 山东威高骨科材料股份有限公司 | Self -sustained formula locking bottle opener of high strength |
| US20160121464A1 (en) * | 2014-01-28 | 2016-05-05 | Shyh-Ming Wang | Anti-disengagement structure of a tool head for a fastener |
| CN206972710U (en) * | 2017-06-07 | 2018-02-06 | 天津市永基成五金制品有限公司 | A kind of high strength fiberboard nail |
| CN107717815A (en) * | 2016-08-10 | 2018-02-23 | 富泰华工业（深圳）有限公司 | A kind of screwdriver head and the electric screw driver with the screwdriver head |
| CN207416439U (en) * | 2017-09-15 | 2018-05-29 | 东莞怡合达自动化股份有限公司 | A kind of encapsulated idler wheel applied to automatic intelligent equipment |
| CN109501125A (en) * | 2019-01-26 | 2019-03-22 | 庐江凯胜塑胶有限公司 | A kind of double-colored plus in-molded power button injection molding process method |
| CN210871989U (en) * | 2019-09-27 | 2020-06-30 | 大博医疗科技股份有限公司 | Self-holding locking nut's bottle opener |
| CN211907003U (en) * | 2020-06-17 | 2020-11-10 | 江苏源达线缆科技有限公司 | Wear-resisting thin-wall electric wire for automobile |
-
2021
- 2021-01-15 CN CN202110057888.2A patent/CN112890944B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2243315A1 (en) * | 1998-07-16 | 2000-01-16 | Willi Hahn Gmbh & Co. Kg | Screwdriver |
| JP3144450U (en) * | 2008-06-19 | 2008-08-28 | 大成ラミック株式会社 | Duckbill valve mounting structure |
| CN103393463A (en) * | 2013-07-16 | 2013-11-20 | 江苏双羊医疗器械有限公司 | Screwdriver |
| US20160121464A1 (en) * | 2014-01-28 | 2016-05-05 | Shyh-Ming Wang | Anti-disengagement structure of a tool head for a fastener |
| US20150209941A1 (en) * | 2014-01-28 | 2015-07-30 | Shyh-Ming Wang | Anti-disengagement structure of a tool head for a fastener |
| CN104825224A (en) * | 2015-05-19 | 2015-08-12 | 山东威高骨科材料股份有限公司 | High-strength self-supporting type locking screw driver |
| CN204765893U (en) * | 2015-05-19 | 2015-11-18 | 山东威高骨科材料股份有限公司 | Self -sustained formula locking bottle opener of high strength |
| CN107717815A (en) * | 2016-08-10 | 2018-02-23 | 富泰华工业（深圳）有限公司 | A kind of screwdriver head and the electric screw driver with the screwdriver head |
| TW201808551A (en) * | 2016-08-10 | 2018-03-16 | 鴻海精密工業股份有限公司 | Screwdriver head and electronic screwdriver with the screwdriver head |
| CN206972710U (en) * | 2017-06-07 | 2018-02-06 | 天津市永基成五金制品有限公司 | A kind of high strength fiberboard nail |
| CN207416439U (en) * | 2017-09-15 | 2018-05-29 | 东莞怡合达自动化股份有限公司 | A kind of encapsulated idler wheel applied to automatic intelligent equipment |
| CN109501125A (en) * | 2019-01-26 | 2019-03-22 | 庐江凯胜塑胶有限公司 | A kind of double-colored plus in-molded power button injection molding process method |
| CN210871989U (en) * | 2019-09-27 | 2020-06-30 | 大博医疗科技股份有限公司 | Self-holding locking nut's bottle opener |
| CN211907003U (en) * | 2020-06-17 | 2020-11-10 | 江苏源达线缆科技有限公司 | Wear-resisting thin-wall electric wire for automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112890944B (en) | 2022-07-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10335137B2 (en) | Fenestrated locking suture anchor assembly | |
| US20070043379A1 (en) | Bone screw/driver assembly and method | |
| AU2014346778B2 (en) | Lockable pedicle fastener | |
| KR101501272B1 (en) | Tool for use with a bone anchor, in particular for spinal surgery | |
| EP2219541B1 (en) | An instrument for placing a "polyaxial" bone screw of vertebral osteosynthesis equipment | |
| US6059786A (en) | Set screw for medical implants | |
| US6299616B1 (en) | Endoscopic insertion apparatus | |
| CA2990073C (en) | Self-holding screw head | |
| US7784166B2 (en) | Coupling device | |
| US7891743B2 (en) | Locking hub cap for wheel hub assembly | |
| CN101790438B (en) | Torque wrench, handle and head piece | |
| WO1996022471A1 (en) | Threaded fastener with torque calibrating mechanism | |
| EP1208806A3 (en) | Osteosynthetic Fastener | |
| WO2013059070A1 (en) | Blended shaft drive | |
| CN112890944B (en) | Self-holding locking bolt screwdriver | |
| US20200289183A1 (en) | Driver for the insertion and removal of flexible fastening devices | |
| AU2003282181B2 (en) | Device for solidly connecting a part to a support and method of fitting one such device | |
| DE102012107861A1 (en) | fastening device | |
| WO2021086517A1 (en) | Healicoil knotless distal tip and plug transmission | |
| US6234735B1 (en) | Spring-loaded compression and tension pin | |
| CN216797806U (en) | Matching hole structure of orthopedic implant and self-holding locking screwdriver matched with same | |
| DE102017120620B4 (en) | Bone anchor and extension device | |
| CN215129969U (en) | Self-holding screwdriver | |
| CN211300291U (en) | Last nail subassembly of staple | |
| CN219439380U (en) | Self-unlocking steel plate capable of achieving single-axial micro-motion and fixing system thereof |
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 |