CN111358546B - Screw plug mounting device - Google Patents
Screw plug mounting device Download PDFInfo
- Publication number
- CN111358546B CN111358546B CN201811600888.7A CN201811600888A CN111358546B CN 111358546 B CN111358546 B CN 111358546B CN 201811600888 A CN201811600888 A CN 201811600888A CN 111358546 B CN111358546 B CN 111358546B
- Authority
- CN
- China
- Prior art keywords
- sleeve
- screw
- plug
- screw plug
- mounting device
- 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
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
-
- 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
- A61B17/686—Plugs, i.e. elements forming interface between bone hole and implant or fastener, e.g. screw
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
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)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Neurology (AREA)
- Transplanting Machines (AREA)
- Insertion Pins And Rivets (AREA)
Abstract
The present disclosure relates to a screw plug mounting device, comprising: the device comprises a first sleeve, a second sleeve, a third sleeve and a guide rod, wherein an alignment part, a first opening and a first limiting device are arranged on the first sleeve; the guide rod is used for installing a first screw plug and a second screw plug and is arranged in the first sleeve; the second sleeve is sleeved on the first sleeve, and a second limiting device for limiting the position of the second plug screw is arranged on the second sleeve; the first end of third sleeve pipe cover is located the second sleeve pipe, the second end to keeping away from the direction extension of counterpoint portion and cover are located first sleeve pipe can counterpoint fast, improves plug screw installation effectiveness.
Description
Technical Field
The disclosure relates to the technical field of medical instruments, in particular to a screw plug mounting device.
Background
In spinal internal fixation surgery, a rod-and-staple system is a common fixation device used to join and fix the upper and lower vertebral bodies. The locking plug is typically required to be installed into the spinal screw during use of the rod system. Currently, in the process of installing locking plugs into spinal screws, it is necessary to use plug holders to hold a locking plug for alignment and pre-tightening and then locking.
Because the nail rod system comprises more spinal screws and locking plugs, the locking plugs are installed by adopting a plug holder, and multiple holding, aligning and locking are needed. The locking screw plug is low in installation efficiency and long in installation time.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The application aims to provide a screw plug installation device, and further at least solves the problems that in the prior art, the screw plug installation device is low in installation efficiency and long in installation time because the screw plug is installed into a locking screw plug by adopting a screw plug holder and needs to be held, aligned and locked for a plurality of times.
According to the present disclosure there is provided a screw plug mounting device comprising:
the first sleeve is provided with an alignment part at the first end for aligning with the screw, a first opening is arranged on the side wall of the first sleeve, and a first limiting device is arranged on one side of the first opening away from the alignment part;
the guide rod penetrates through the first sleeve and can rotate and slide in the first sleeve, and is used for installing a first screw plug and a second screw plug, the first screw plug and the second screw plug are sleeved on the guide rod, and the second screw plug is positioned at one side of the first screw plug far away from the alignment part;
the second sleeve is sleeved on the first sleeve, a second limiting device is arranged on the second sleeve and extends into the first sleeve through the first opening, the second sleeve can move axially relative to the first sleeve, when the second sleeve is located at a first position, the second limiting device is in a limiting state to limit the position of the first plug screw, and when the second sleeve is located at a second position, the first opening is used for expanding the second limiting device, and limiting of the first plug screw is relieved;
the first end of the third sleeve is sleeved on the second sleeve, the second end of the third sleeve extends away from the direction of the alignment part and is sleeved on the first sleeve, the inner wall of the third sleeve is provided with a compression part, the third sleeve can move along the axial direction relative to the first sleeve, when the third sleeve is positioned at a third position, the first limiting device is in a free state, and when the third sleeve is positioned at the third position, the compression part compresses the first limiting device to limit the second screw plug.
According to an embodiment of the present disclosure, the first limiting device includes:
the compression part is used for compressing the first bulge in the process that the third sleeve moves from the third position to the fourth position, so that the first elastic sheet compresses the second plug screw.
According to an embodiment of the disclosure, the first end of the compression portion has an inner diameter larger than that of the second end, and an end of the compression portion, which is close to the alignment portion, is the first end.
According to an embodiment of the present disclosure, the second limiting device includes:
the second elastic piece is positioned on the side wall of the second sleeve, a second bulge is arranged on the inner side of the second elastic piece and stretches into the first sleeve through the first opening, when the second sleeve is positioned at the first position, the second bulge is in a free state to limit the position of the first screw plug, and when the second sleeve is positioned at the second position, the second bulge is in an expanded state to release the limit of the first screw plug.
According to one embodiment of the disclosure, a first inclined surface is disposed on one side of the first opening near the alignment portion, the first inclined surface extends from the outer wall of the first sleeve to the inner wall of the first sleeve along a direction away from the alignment portion, and when the second sleeve approaches the alignment portion along the first sleeve, the second protrusion moves along the first inclined surface, so that the restriction on the first plug screw is released.
According to an embodiment of the present disclosure, the screw plug mounting device further includes:
the first spring is arranged on one side, close to the alignment part, of the first opening on the first sleeve, and the first boss is sleeved on the first sleeve and located between the boss and the first end face of the second sleeve.
According to an embodiment of the present disclosure, the screw plug mounting device further includes:
the inner wall of the second end of the third sleeve is provided with a second boss, and the second spring is sleeved on the guide rod and is positioned between the second end face of the first sleeve and the second boss.
According to one embodiment of the disclosure, a thread is provided on an inner wall of the first sleeve adjacent to the alignment portion, the thread being adapted to mate with the plug screw.
According to one embodiment of the present disclosure, the second sleeve is provided with a guide protrusion, the third sleeve is provided with a guide groove, and the guide protrusion is mounted in the guide groove.
According to an embodiment of the present disclosure, the guide bar includes:
the guide part is matched with the inner hole of the screw plug, so that the screw plug can rotate along with the guide rod;
and the rotating part is connected with the guide part and is used for driving the guide part to rotate.
According to the screw plug installation device, a plurality of screw plugs can be sleeved on the guide rod at the same time, and when the second sleeve is in the first position, the second limiting device is in a limiting state to limit the position of the first screw plug, so that the screw plug is prevented from moving to the first end of the first sleeve; when the third sleeve moves from the third position to the fourth position, the compression part compresses the first limiting device to limit the second plug screw; when the second sleeve moves from the first position to the second position, the second limiting device is converted from a limiting state to an opening state, at the moment, the first screw plug is released from limiting, the second screw plug is still limited, the first screw plug falls to the alignment part through self gravity, and then the installation of the screw plug is completed through the guide rod. The screw plug locking device has the advantages that the screw plugs can be held at one time, and can be aligned with the screws rapidly, so that the problems of low installation efficiency and long installation time of the locking screw plugs are solved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.
Fig. 1 is an isometric view of a screw plug mounting device provided in an exemplary embodiment of the present disclosure.
Fig. 2 is a schematic cross-sectional view of a screw plug mounting device provided in an exemplary embodiment of the present disclosure.
Fig. 3 is a schematic partial cross-sectional view of a plug installation device provided in an exemplary embodiment of the present disclosure.
Fig. 4 is a schematic view of a first sleeve provided in an exemplary embodiment of the present disclosure.
Fig. 5 is an isometric view of a first sleeve provided in an exemplary embodiment of the present disclosure.
Fig. 6 is an isometric view of a second sleeve provided in an exemplary embodiment of the present disclosure.
Fig. 7 is a schematic left-hand view of a second sleeve provided in an exemplary embodiment of the present disclosure.
Fig. 8 is an isometric view of a third sleeve provided in an exemplary embodiment of the present disclosure.
Fig. 9 is a schematic diagram of a third sleeve provided in an exemplary embodiment of the present disclosure.
Fig. 10 is a schematic cross-sectional view of a third sleeve provided in an exemplary embodiment of the present disclosure.
Fig. 11 is a schematic view of a guide bar according to an exemplary embodiment of the present disclosure.
Fig. 12 is a schematic cross-sectional view of a guide bar provided in an exemplary embodiment of the present disclosure.
Fig. 13 is an isometric view of a guide bar according to an exemplary embodiment of the present disclosure.
Fig. 14 is a schematic view of a threaded sleeve provided in an exemplary embodiment of the present disclosure.
Fig. 15 is a schematic cross-sectional view of a threaded sleeve provided in an exemplary embodiment of the present disclosure.
Fig. 16 is an exploded view of a component provided in an exemplary embodiment of the present disclosure.
Fig. 17 is a schematic view of a screw plug provided in an exemplary embodiment of the present disclosure.
Fig. 18 is a schematic view of a screw provided in an exemplary embodiment of the present disclosure.
Fig. 19 is a schematic view of another screw provided in an exemplary embodiment of the present disclosure.
In the figure:
100. a first sleeve; 110. an alignment part; 120. a first opening; 121. a first inclined surface; 130. a first elastic sheet; 131. a first protrusion; 140. a first boss; 200. a second sleeve; 210. a second spring plate; 211. a second protrusion; 212. inscribing a circle; 220. a guide protrusion; 300. a third sleeve; 310. a compression section; 320. a guide groove; 400. a guide rod; 410. a guide part; 420. a rotating part; 421. limit pins; 422. a limit boss; 430. a thread sleeve; 431. an external thread; 432. a flange plate; 500. a first spring; 600. a second spring; 700. a first plug screw; 800. a second plug screw; 900. a screw; 910. and (5) nailing the tail.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.
Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification for convenience only, such as in terms of the orientation of the examples described in the figures. It will be appreciated that if the device of the icon is flipped upside down, the recited "up" component will become the "down" component. When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.
The terms "a," "an," "the," "said" and "at least one" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. in addition to the listed elements/components/etc.; the terms "first," "second," and "third," etc. are used merely as labels, and do not limit the number of their objects.
In the present exemplary embodiment, there is first provided a screw plug mounting device including a first sleeve 100, a second sleeve 200, a third sleeve 300, and a guide rod 400, as shown in fig. 1, 2, and 3:
the first end of the first sleeve 100 is provided with an alignment part 110 for aligning with the screw 900, a first opening 120 is arranged on the side wall of the first sleeve 100, and a first limiting device is arranged on one side of the first opening 120 away from the alignment part 110; the guide rod 400 passes through the first sleeve 100 and can rotate and slide in the first sleeve 100, and is used for installing a first screw plug 700 and a second screw plug 800, the first screw plug 700 and the second screw plug 800 are sleeved on the guide rod 400, and the second screw plug 800 is positioned on one side of the first screw plug 700 away from the alignment part 110;
the second sleeve 200 is sleeved on the first sleeve 100, a second limiting device is arranged on the second sleeve 200, the second limiting device extends into the first sleeve 100 through the first opening 120, the second sleeve 200 can move relative to the first sleeve 100 along the axial direction, when the second sleeve 200 is positioned at a first position, the second limiting device is in a limiting state to limit the position of the first screw plug 700, and when the second sleeve 200 is positioned at a second position, the first opening 120 supports the second limiting device, so that the limitation of the first screw plug 700 is released;
the first end of the third sleeve 300 is sleeved on the second sleeve 200, the second end extends away from the alignment portion 110, and is sleeved on the first sleeve 100, a compression portion 310 is disposed on the inner wall of the third sleeve 300, the third sleeve 300 can move relative to the first sleeve 100 along the axial direction, when the third sleeve 300 is located at the third position, the first limiting device is in a free state, and when the third sleeve 300 is located at the fourth position, the compression portion 310 compresses the first limiting device to limit the second plug screw 800.
The plug screw mounting device provided in the embodiments of the present disclosure can simultaneously sleeve a plurality of plug screws on the guide rod 400, and when the second sleeve 200 is in the first position, the second limiting device is in a limiting state to limit the position of the first plug screw 700, so as to prevent the plug screw from moving to the first end of the first sleeve 100; when the third sleeve 300 moves from the third position to the fourth position, the compression part 310 compresses the first limiting device to limit the second plug screw 800; when the second sleeve 200 moves from the first position to the second position, the second limiting device is switched from the limiting state to the opening state, at this time, the limit of the first screw plug 700 is released, the second screw plug 800 is still limited, the first screw plug 700 falls down to the alignment part 110 by self gravity, and then the installation of the screw plug is completed by the guide rod 400. The screw plug locking device has the advantages that the screw plugs can be held once, can be aligned with the screws 900 quickly, and solves the problems of low installation efficiency and long installation time of the locking screw plugs.
The following describes each part of the screw plug installation device provided in the embodiments of the present disclosure in detail:
as shown in fig. 4 and 5, the first sleeve 100 is provided with an alignment portion 110, a first opening 120 and a first limiting device, the alignment portion 110 is disposed at a first end of the first sleeve 100, and a side of the first opening 120 away from the alignment portion 110 is provided with the first limiting device.
The alignment portion 110 is configured to align with the screw 900, where the shape of the alignment portion 110 matches the shape of the portion of the screw 900 where the screw plug is mounted, for example, the outer contour of the portion of the screw 900 where the screw plug is mounted is cylindrical, and the alignment portion 110 may have a structure with an open cylindrical cavity, and the open cylindrical cavity is in clearance fit with the screw 900, so that rapid alignment is achieved through the open cylindrical cavity and the screw 900. The first sleeve 100 and the inner wall adjacent to the alignment portion 110 are provided with threads for mating with the screw plug.
The first limiting device comprises at least one first elastic piece 130, the at least one elastic piece is located on the side wall of the first sleeve 100, a first protrusion 131 is arranged on the outer side of the first elastic piece 130, and the compression part 310 presses the first protrusion 131 in the process that the third sleeve 300 moves from the third position to the fourth position, so that the first elastic piece 130 presses the second plug screw 800.
The first elastic piece 130 may be an integrally formed structure with the first sleeve 100, for example, the edge of the first elastic piece 130 is cut off on the side wall of the first sleeve 100 to form the first elastic piece 130, or an elastic piece mounting groove may be machined on the wall of the first sleeve 100, and then the elastic piece is mounted in the elastic piece mounting groove by welding or screwing, etc., which is not particularly limited in the embodiment of the disclosure.
When the first limiting device includes a plurality of first elastic pieces 130, the plurality of first elastic pieces 130 may be uniformly distributed on the side wall of the first sleeve 100 along the circumferential direction, for example, the first limiting device includes three first elastic pieces 130, at this time, the three first elastic pieces 130 are uniformly distributed on the side wall of the first sleeve 100 along the circumferential direction, and the central angle of two adjacent first elastic pieces 130 is 120 degrees. In practical applications, the plurality of first elastic pieces 130 may be distributed unevenly, which is not limited to the embodiment of the disclosure.
The first protrusion 131 is disposed on the outer side of the first elastic sheet 130, and when the first protrusion 131 is compressed, the first elastic sheet 130 is pressed inwards, and the first elastic sheet 130 presses the second screw plug 800 sleeved on the guide rod 400. In the embodiment of the disclosure, the first plug 700 and the second plug 800 are both plugs to be installed, a plurality of plugs to be installed are sleeved on the guide rod 400, at this time, one plug close to the alignment portion 110 is the first plug 700, and the other plugs are the second plugs 800.
As shown in fig. 6 and 7, the second sleeve 200 is provided with a second limiting device, the second sleeve 200 is sleeved on the first sleeve 100, the second limiting device extends into the first sleeve 100 through the first opening 120, and the second sleeve 200 can move relative to the first sleeve 100 along the axial direction.
The second limiting device includes: at least one second elastic sheet 210 is located on the side wall of the second sleeve 200, a second protrusion 211 is disposed on the inner side of the second elastic sheet 210, the second protrusion 211 extends into the first sleeve 100 through the first opening 120, when the second sleeve 200 is located at the first position, the second protrusion 211 is in a free state to limit the position of the first plug 700, and when the second sleeve 200 is located at the second position, the second protrusion 211 is in an expanded state to release the limit of the first plug 700.
The second elastic sheet 210 may be an integrally formed structure with the second sleeve 200, for example, the edge of the second elastic sheet 210 is cut off on the side wall of the second sleeve 200 to form the second elastic sheet 210, or an elastic sheet mounting groove may be machined on the wall of the second sleeve 200, and then the second elastic sheet 210 is mounted in the elastic sheet mounting groove by welding or screwing, etc., which is not limited in this embodiment of the disclosure.
When the second limiting device includes a plurality of second elastic pieces 210, the plurality of second elastic pieces 210 may be uniformly distributed on the side wall of the second sleeve 200 along the circumferential direction, for example, the second limiting device includes three second elastic pieces 210, at this time, the three second elastic pieces 210 are uniformly distributed on the side wall of the second sleeve 200 along the circumferential direction, and the central angle of two adjacent second elastic pieces 210 is 120 degrees. Of course, in practical applications, the plurality of second elastic pieces 210 may be unevenly distributed, and the arrangement of the second openings may be the same as that of the first openings 120
Correspondingly, the number of the first openings 120 and the number of the second elastic pieces 210 may be the same, and the plurality of first openings 120 are uniformly distributed on the side wall of the first sleeve 100 along the circumferential direction, for example, the second limiting device includes three second elastic pieces 210, where the first sleeve 100 may be provided with three first openings 120, and the central angles of two adjacent first openings 120 are 120 degrees.
The second elastic sheet 210 is provided with a second protrusion 211, the second protrusion 211 extends into the first sleeve 100 through the first opening 120, in the initial state, the second elastic sheet 210 is in a free state, the diameter of an inscribed circle 212 formed by the second protrusions 211 on the plurality of second elastic sheets 210 in the free state is smaller than the outer diameter of the plug screw, the first plug screw 700 is blocked, and the axial limiting of the first plug screw 700 is realized. The initial state is the first position, the second sleeve 200 is pushed to move to the side close to the aligning part 110 along the axial direction, the second protrusions 211 are outwards spread during the movement, the diameter of the inscribed circle 212 of the second protrusions 211 becomes larger, and when the diameter of the inscribed circle 212 is larger than the outer diameter of the screw plug, the second limiting device loses the limiting effect, and the limitation of the first screw plug 700 is released.
In order to expand the second elastic sheet 210 outwards during the movement of the second sleeve 200, a first inclined surface 121 is disposed on one side of the first opening 120 near the alignment portion 110, the first inclined surface 121 extends from the outer wall of the first sleeve 100 to the inner wall of the first sleeve 100 along the direction away from the alignment portion 110, and when the second sleeve 200 moves along the first sleeve 100 near the alignment portion 110, the second protrusions 211 move along the first inclined surface 121, so that the diameter of the inscribed circle 212 of the second protrusions 211 becomes larger.
The second protrusion 211 may be a pin, the pin is disposed at an end of the second elastic sheet 210, and a contact portion of the pin and the first inclined surface 121 is provided with a second inclined surface, and the second inclined surface slides on the first inclined surface 121 during the movement of the second sleeve 200.
As shown in fig. 8, 9 and 10, the first end of the third sleeve 300 is sleeved on the second sleeve 200, the second end extends away from the alignment portion 110 and is sleeved on the first sleeve 100, the inner wall of the third sleeve 300 is provided with a compression portion 310, the inner diameter of the first end of the compression portion 310 is larger than the inner diameter of the second end, and the end of the compression portion 310 close to the alignment portion 110 is the first end. When the third sleeve 300 is pushed to move to a side close to the alignment part 110, the compression part 310 contacts with the first protrusion 131, and presses the first protrusion 131, so that the first elastic piece 130 compresses the second plug 800.
The second sleeve 200 is provided with a guide protrusion 220, the third sleeve 300 is provided with a guide groove 320, and the guide protrusion 220 is mounted on the guide groove 320. The guide groove 320 moves relative to the guide protrusion 220 when the third socket 300 is pushed to a side near the alignment part 110, and the second socket 200 and the third socket 300 move together after the guide protrusion 220 is positioned at an end of the guide groove 320 far from the alignment part 110. The guide protrusion 220 may be a pin and the guide groove 320 may be a long hole.
As shown in fig. 11, 12 and 13, the guide rod 400 includes a guide portion 410 and a rotation portion 420, and the guide portion 410 is engaged with the inner hole of the screw plug so that the screw plug can rotate with the guide rod 400. For example, the inner hole of the screw plug is quincuncial in shape, and the cross section of the guide rod 400 may be quincuncial. The rotating part 420 is connected to the guiding part 410, and is used for driving the guiding part 410 to rotate. The rotating part 420 is sleeved with the threaded sleeve 430, the rotating part 420 is provided with the limiting step 422, one side of the limiting step 422, which is close to the aligning part 110, is provided with the limiting pin 421, the threaded sleeve 430 is positioned between the limiting step 422 and the limiting pin 421 and is in clearance fit with the rotating part 420, and can rotate and slide on the guide rod 400, so that the length of the guide part 410 extending out of the first sleeve 100 can be adjusted to adapt to screws with different tail lengths.
As shown in fig. 14 and 15, one end of the threaded sleeve 430 is provided with an external thread 431, the external thread 431 is used for being matched with an internal thread of the second end of the first sleeve 100, the other end of the threaded sleeve 430 is provided with a flange 432, and the flange 432 is clamped on the second end surface of the third sleeve 300, so as to clamp the third sleeve 300.
For example, the screw plug according to the embodiments of the present disclosure may be a screw plug as shown in fig. 17, the screw may be a screw as shown in fig. 18 and 19, a short tail nail as shown in fig. 18, and a long tail nail as shown in fig. 19, where the tail 910 of the long tail nail is longer than the tail 910 of the short tail nail, and of course, other screw plugs and screws may be used in practical applications, and the embodiments of the present disclosure are not limited thereto.
Further, in order to ensure that the second sleeve 200 and the third sleeve 300 can be restored after the screw plug is installed, the screw plug installation device further includes a first spring 500 and a second spring 600; a first boss 140 is disposed on a side of the first opening 120 of the first sleeve 100, which is close to the alignment portion 110, and the first spring 500 is sleeved on the first sleeve 100 and is located between the first boss 140 and the first end surface of the second sleeve 200; as shown in fig. 16, a second boss is disposed on an inner wall of the second end of the third sleeve 300, and the second spring 600 is sleeved on the guide rod 400 and is located between the second end surface of the first sleeve 100 and the second boss.
In one possible implementation manner provided by the embodiment of the disclosure, the second sleeve may include a second sleeve body, a second protrusion 211 and a guide protrusion 220, where the second protrusion 211 is disposed on a second elastic sheet of the second sleeve body, and the guide protrusion 220 is disposed on an outer sidewall of the second sleeve body. When in assembly, the third sleeve 300 is sleeved on the second sleeve body, the second protrusion 211 is riveted on the second elastic sheet 210, the guide protrusion 220 is riveted on the outer wall of the second sleeve, and the guide protrusion 220 is positioned in the guide groove 320 to form a sleeve assembly; the first spring 500, the second spring 600 and the sleeve assembly are sleeved on the first sleeve 100, and one end of the second protrusion 211 extends into the first sleeve 100 through the first opening 120; the screw is fitted over the guide rod 400, and the guide rod 400 with the screw is penetrated from the second end of the third sleeve 300 so that the screw thread of the screw sleeve 430 and the first sleeve 100 are screwed.
In use, the third sleeve 300 is pushed towards the direction close to the alignment part 110, the compression part 310 on the third sleeve 300 presses the first bulge 131, the first bulge 131 presses the first elastic sheet 130, and the second screw plug 800 is pressed; when the guide groove 320 on the third sleeve 300 is far from one end of the alignment part 110 and contacts with the guide protrusion 220 on the second sleeve 200, the third sleeve 300 drives the second sleeve 200 to move together, the second protrusion 211 slides along the first inclined plane 121, the second elastic sheet 210 expands outwards, the limit of the first screw plug 700 is released, the first screw plug 700 falls to the screw thread part adjacent to the alignment part 110 of the first sleeve 100 due to the self gravity, the guide rod 400 is rotated by the rotating part 420, the first screw plug 700 is driven to screw in the screw thread part, then the screw 900 is entered, and the screw plug is screwed with the internal screw thread on the screw 900, so that the installation of the screw plug is completed.
After the first screw plug 700 falls into the threaded portion, the third sleeve 300 is loosened, the second sleeve 200 is reset under the drive of the second spring 600, the third sleeve 300 is reset under the drive of the third spring, the first limiting device and the second limiting device are restored to the initial state, at this time, the second screw plug 800 is released from the limit and falls to the position of the second protrusion 211, at this time, the second screw plug 800 closest to the second protrusion 211 becomes the first screw plug 700. The above steps are then repeated for the installation of another plug.
The screw plug installation device provided by the embodiment of the disclosure can be preloaded with a certain number of locking screw plugs, and the alignment part 110 can be sleeved into the screw heads of the spine screws to realize positioning, so that sliding wires during screwing of the locking screw plugs are avoided. After the locking screw plug is screwed into the screw head, a new locking screw plug is delivered to the front end of the first sleeve 100 by pushing and pulling the third sleeve 300 to perform the next operation; can simultaneously meet the requirements of long and short tail nails.
The alignment part is matched with the appearance of the spine screw and realizes tiny clearance fit, the coaxiality of the guide rod and the spine screw head is good, and the phenomenon of sliding wires caused by the deflection of the axis when the locking screw plug is screwed into the screw is avoided; the guide rod 400 is provided with a limit pin, so that the guide rod can move in a certain range in the axial direction, and the operation of the long tail nail and the short tail nail can be simultaneously adapted; the guide bar 400 is preloaded with a number of locking plugs to reduce the time required for the locking plugs to be re-held, aligned and locked. The front end of the first sleeve 100 has several fastening threads to achieve self-holding of the locking plug screw. After the first locking screw plug is screwed in, the new locking screw plug can be output to the front end of the guide rod, so that the current locking screw plug is prevented from being screwed in place, and the new locking screw plug is also screwed out and falls into a human body. The locking plug screw is pulled down through the push-pull of the third sleeve, the elasticity of each sleeve and the gravity of the plug screw, and the structure is simple.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (10)
1. A screw plug mounting device, comprising:
the first sleeve is provided with an alignment part at the first end for aligning with the screw, a first opening is arranged on the side wall of the first sleeve, and a first limiting device is arranged on one side of the first opening away from the alignment part;
the guide rod penetrates through the first sleeve and can rotate and slide in the first sleeve, and is used for installing a first screw plug and a second screw plug, the first screw plug and the second screw plug are sleeved on the guide rod, and the second screw plug is positioned at one side of the first screw plug far away from the alignment part;
the second sleeve is sleeved on the first sleeve, a second limiting device is arranged on the second sleeve and extends into the first sleeve through the first opening, the second sleeve can move axially relative to the first sleeve, when the second sleeve is located at a first position, the second limiting device is in a limiting state to limit the position of the first plug screw, and when the second sleeve is located at a second position, the first opening is used for expanding the second limiting device, and limiting of the first plug screw is relieved;
the first end of the third sleeve is sleeved on the second sleeve, the second end of the third sleeve extends away from the direction of the alignment part and is sleeved on the first sleeve, the inner wall of the third sleeve is provided with a compression part, the third sleeve can move along the axial direction relative to the first sleeve, when the third sleeve is positioned at a third position, the first limiting device is in a free state, and when the third sleeve is positioned at a fourth position, the compression part compresses the first limiting device to limit the second screw plug.
2. The plug screw mounting device of claim 1, wherein said first stop means comprises:
the compression part is used for compressing the first bulge in the process that the third sleeve moves from the third position to the fourth position, so that the first elastic sheet compresses the second plug screw.
3. The plug screw mounting device of claim 2, wherein the first end of the compression portion has a larger inner diameter than the second end, and wherein the end of the compression portion adjacent the alignment portion is the first end.
4. The plug screw mounting device of claim 1, wherein said second stop means comprises:
the second elastic piece is positioned on the side wall of the second sleeve, a second bulge is arranged on the inner side of the second elastic piece and stretches into the first sleeve through the first opening, when the second sleeve is positioned at the first position, the second bulge is in a free state to limit the position of the first screw plug, and when the second sleeve is positioned at the second position, the second bulge is in an expanded state to release the limit of the first screw plug.
5. The plug screw mounting device of claim 4, wherein a side of the first opening adjacent to the alignment portion is provided with a first slope extending from the outer wall of the first sleeve in a direction away from the alignment portion to the inner wall of the first sleeve, and wherein the second protrusion moves along the first slope when the second sleeve approaches the alignment portion along the first sleeve, releasing the restriction of the first plug screw.
6. The screw plug mounting device of claim 1, further comprising:
the first spring is sleeved on the first sleeve and is located between the first boss and the first end face of the second sleeve.
7. The screw plug mounting device of claim 1, further comprising:
the inner wall of the second end of the third sleeve is provided with a second boss, and the second spring is sleeved on the guide rod and is positioned between the second end face of the first sleeve and the second boss.
8. The plug screw mounting device of claim 1, wherein threads are provided on an inner wall of said first sleeve adjacent said alignment portion, said threads being adapted to mate with said plug screw.
9. The plug screw mounting device of claim 1, wherein the second sleeve is provided with a guide projection and the third sleeve is provided with a guide groove, the guide projection being mounted to the guide groove.
10. The plug screw mounting device of claim 1, wherein said guide rod comprises:
the guide part is matched with the inner hole of the screw plug, so that the screw plug can rotate along with the guide rod;
and the rotating part is connected with the guide part and is used for driving the guide part to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811600888.7A CN111358546B (en) | 2018-12-26 | 2018-12-26 | Screw plug mounting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811600888.7A CN111358546B (en) | 2018-12-26 | 2018-12-26 | Screw plug mounting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111358546A CN111358546A (en) | 2020-07-03 |
| CN111358546B true CN111358546B (en) | 2023-10-17 |
Family
ID=71198913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811600888.7A Active CN111358546B (en) | 2018-12-26 | 2018-12-26 | Screw plug mounting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111358546B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014090114A1 (en) * | 2012-12-12 | 2014-06-19 | 上海微创骨科医疗科技有限公司 | Pedicle screw and anterior thoracic/lumbar vertebral internal fixation system |
| CN104783879A (en) * | 2015-05-12 | 2015-07-22 | 山东威高骨科材料股份有限公司 | Pedicle screw and bar pressing device |
| CN105496533A (en) * | 2015-12-07 | 2016-04-20 | 北京市富乐科技开发有限公司 | Self-locking universal nail |
| CN206896389U (en) * | 2016-12-26 | 2018-01-19 | 贺新宁 | Scoliosis follows closely rod correction bracket system |
| CN209529314U (en) * | 2018-12-26 | 2019-10-25 | 北京纳通医学科技研究院有限公司 | Plug screw mounting device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016164541A1 (en) * | 2015-04-07 | 2016-10-13 | K2M, Inc. | Spinal stabilization device, system, and method of use |
-
2018
- 2018-12-26 CN CN201811600888.7A patent/CN111358546B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014090114A1 (en) * | 2012-12-12 | 2014-06-19 | 上海微创骨科医疗科技有限公司 | Pedicle screw and anterior thoracic/lumbar vertebral internal fixation system |
| CN104783879A (en) * | 2015-05-12 | 2015-07-22 | 山东威高骨科材料股份有限公司 | Pedicle screw and bar pressing device |
| CN105496533A (en) * | 2015-12-07 | 2016-04-20 | 北京市富乐科技开发有限公司 | Self-locking universal nail |
| CN206896389U (en) * | 2016-12-26 | 2018-01-19 | 贺新宁 | Scoliosis follows closely rod correction bracket system |
| CN209529314U (en) * | 2018-12-26 | 2019-10-25 | 北京纳通医学科技研究院有限公司 | Plug screw mounting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111358546A (en) | 2020-07-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8034089B2 (en) | Bone anchoring device | |
| US11486435B2 (en) | Expansion connector | |
| KR20110114503A (en) | Bone anchoring device | |
| JP7138124B2 (en) | A cutting tool body having a holding member for holding a cutting tool and a connecting screw | |
| US20200156161A1 (en) | Device for removing an installed fastener in an opening | |
| US20190059525A1 (en) | Slider with reboundable pull-tab | |
| US20140001714A1 (en) | Clamping device for clamping a fastener | |
| US20050258326A1 (en) | Recessed electrical equipment fixture | |
| CN218832903U (en) | Quick connecting device and surgical robot | |
| CN106981778B (en) | A kind of connector and connector assembly | |
| CN111358546B (en) | Screw plug mounting device | |
| AU2018391659A1 (en) | Load carrier foot | |
| DE19714874C1 (en) | Mounting socket for LV-halogen lamps or starter for fluorescent lamps | |
| JP5968387B2 (en) | Frame connector | |
| CN111185868B (en) | movable sleeve | |
| US7614835B2 (en) | Simple fastening device | |
| KR101870317B1 (en) | A expanding hexagonal wrench | |
| US20170020349A1 (en) | Fixing device of toilet cover | |
| CN212773790U (en) | But quick assembly disassembly's handle device | |
| CN211117015U (en) | Quick-release positioning pin | |
| US20050013550A1 (en) | Clip disk for grinding optical fibers | |
| CN219089595U (en) | Vertebral body nail and vertebral body nail dismounting device | |
| CN114148537B (en) | Unmanned aerial vehicle illumination lamp | |
| TWM513103U (en) | Cutter wheel clamping device | |
| CN110242677A (en) | Two-period form universal joint |
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 |