CN202637097U - Minimally-invasive spine pedicle-screw holding sleeve - Google Patents

Minimally-invasive spine pedicle-screw holding sleeve Download PDF

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Publication number
CN202637097U
CN202637097U CN 201220327648 CN201220327648U CN202637097U CN 202637097 U CN202637097 U CN 202637097U CN 201220327648 CN201220327648 CN 201220327648 CN 201220327648 U CN201220327648 U CN 201220327648U CN 202637097 U CN202637097 U CN 202637097U
Authority
CN
China
Prior art keywords
sleeve
wicresoft
screw
lock
pin
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.)
Expired - Fee Related
Application number
CN 201220327648
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Chinese (zh)
Inventor
谭军
陶凯
山卫东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KANGHUI MEDICAL INNOVATION CO Ltd
Changzhou Kanghui Medical Innovation Co Ltd
Original Assignee
KANGHUI MEDICAL INNOVATION CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by KANGHUI MEDICAL INNOVATION CO Ltd filed Critical KANGHUI MEDICAL INNOVATION CO Ltd
Priority to CN 201220327648 priority Critical patent/CN202637097U/en
Application granted granted Critical
Publication of CN202637097U publication Critical patent/CN202637097U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a minimally-invasive spine pedicle-screw holding sleeve, which is characterized by consisting of a minimally-invasive sleeve, a locking sleeve, a sliding groove pin, a locking screw and an anti-spinning pin, wherein the locking sleeve is sheathed outside the minimally-invasive sleeve; the locking sleeve is connected with the minimally-invasive sleeve by the sliding groove pin; the locking sleeve and the minimally-invasive sleeve can be fixed by the locking screw; and the anti-spinning pin is positioned at the front end of the minimally-invasive sleeve. The minimally-invasive spine pedicle-screw holding sleeve has the advantages that the anti-spinning pin at the inner wall and horizontal bosses are designed to be matched with pedicle screws to limit the movement in multiple directions, so that the use in operation is simple and convenient and the operation for nail holding and disassembly is fast and effective; by the boss and elastic design at the outer side, the locking is carried out by matching with the locking sleeve, so that the convenient and effective effects are achieved; and the wound of the two thin walls at the front end to the tissue channel is less, and especially, the cross section of the wound is greatly reduced compared with the existing product.

Description

A kind of vertebral column minimally invasive pedicle screw is holding sleeve
[technical field]
This utility model relates to the surgical medical equipment technical field, specifically, is that a kind of vertebral column minimally invasive pedicle screw is holding sleeve.
[background technology]
Along with operating theater instruments is constantly updated, the continuous appearance of advanced medical imaging equipment and the application of art Computer assisting navigation, less invasive techniques develops very fast in spinal surgery.Wicresoft refers to disturb with the invasion and attack of minimum and minimum physiology a kind of operation or the test mode of the operative effect that reaches best, and topmost feature is the wound microminiaturization.Surgical operation is as planned wound, and the patient should make every effort to the wound of operation is reduced to bottom line, reaches the purpose of Wicresoft.Minimally Invasive Surgery reduces operating time, reduces the sickness rate of complication, alleviates tissue injury and hemorrhage in the art, shortens patient's recovery time, alleviates operation pain, is that otch is attractive in appearance, shortens and is in hospital and rehabilitation duration, reduces drug use and the Financial cost of the cost of being in hospital.In a word, Minimally Invasive Surgery has satisfied the requirement of harmonious society to the public medical and health cause from medical speciality attribute and this two aspect of social property, along with the development of science and technology, the vertebral column minimally invasive technology will as the part of conventional surgical technology, become a main trend of internal fixation of spine technical development.
Find by the research to Wicresoft's system design of current in the world several famous brand names, although the tool design of existing international Related product can both satisfy the basic demand of vertebral column minimally invasive, it is complicated that but problem is design concept, operating process is loaded down with trivial details, need to have the surgeon of very high skill experience could finish smoothly operation, this has just hindered popularizing of minimally invasive spine surgical greatly.Therefore provide a kind of vertebral column minimally invasive pedicle screw with independent intellectual property right holding sleeve, reach that the Minimally Invasive Surgery wound minimizes, the process of whole operation is simple and instrument is convenient and reliable, very important meaning is arranged.
[utility model content]
The purpose of this utility model is to provide a kind of vertebral column minimally invasive pedicle screw holding sleeve, and is simple to operate, little to skin injury.
The purpose of this utility model is achieved through the following technical solutions:
A kind of vertebral column minimally invasive pedicle screw is holding sleeve, by Wicresoft's sleeve pipe, lock sleeve, chute pin, lock screw with anti-ly revolve pin and form.Lock sleeve is placed in outside Wicresoft's sleeve pipe; The chute pin is telescopic joint with lock sleeve and Wicresoft, and lock sleeve can be moved in limited range in the axial direction with Wicresoft's sleeve pipe; Lock sleeve and Wicresoft's sleeve pipe can be fixed by lock screw; Anti-revolve pin and be positioned at Wicresoft's sleeve pipe front end, in order to the axial rotation of the telescopic joint pedicle screw of restriction and Wicresoft.
Described Wicresoft sleeve pipe is hollow design; Front end is provided with U-shaped elongated slot, and U-shaped groove is divided into both sides with the sleeve pipe front end; The outside, two side is provided with gradual change projection, locks cover and realizes elastic locking; Sidewall fore-end thin-walled can better reduce the wound to tissue; Be respectively equipped with string or multiple row aperture on the two side, to revolve the pin connection with being connected, the restriction screw axial rotatablely moves; The inboard front end in two side is provided with horizontal projection, cooperates pedicle screw head of a nail outside groove, with moving up and down of restriction screw axial; Wicresoft's sleeve pipe is provided with the elongated slot of two symmetries, to cooperate the chute pin lock sleeve can be moved up and down vertically; Wicresoft's sleeve pipe is provided with groove II, uses to cooperate other operation tools.
Described lock sleeve is hollow design, and front end is provided with U-shaped groove II, and U-shaped groove II is divided into both sides with lock sleeve; The two side is respectively equipped with a screwed hole I, cooperates the chute pin; Outside, lock sleeve both sides respectively is provided with a recess, in order to control; The recess front-end and back-end respectively are provided with protruding I and an II, use with convenient, are beneficial to and control; The locker rear end is provided with a screwed hole II, cooperates with lock screw, in order to fixing and locking cover and Wicresoft's sleeve pipe.
Described chute pin, an end is provided with external screw thread I, and head is provided with flat recess; The other end is cylinder II, and nose circle is blunt.
Described lock screw is provided with external screw thread II, and an end is provided with inner hexagonal hole or plum blossom hole.
Described resisting revolved pin, is cylinder II shape, and an end is spherical.
A kind of vertebral column minimally invasive pedicle screw is holding sleeve, and its assembling process is: will resist and revolve pin insertion Wicresoft sleeve pipe front end aperture, and with Wicresoft's sleeve pipe welding and with surface finish; Lock sleeve is placed in outside Wicresoft's sleeve pipe; The chute pin is screwed in the screwed hole of lock sleeve both sides, and front end inserts in Wicresoft's sleeve pipe elongated slot, and is so far that lock sleeve and Wicresoft is telescopic joint, and lock sleeve can move in limited range in the axial direction with Wicresoft's sleeve pipe; Be screwed into lock screw at lock sleeve.
A kind of vertebral column minimally invasive pedicle screw uses holding sleeve matching with micro-traumatic pedicle screw,
Wicresoft's pedicle screw is comprised of the head of a nail, rivet nut, packing washer, and rivet nut is passed the head of a nail, and spacing fixing by packing washer.
The described head of a nail, an end are provided with U-shaped groove I, and U-shaped groove I opening one end inwall is provided with female thread I; The inwall main body is cylinder I, and the outside, head of a nail two ends pars intermedia is provided with respectively one or more horizontal grooves, is used to limit axially moving up and down of screw with operation tool; The head of a nail outside respectively is provided with one or more vertical elongated slots along its axis direction in the middle of both sides, cooperate operation tool to use in order to limit screw around axial rotatablely moving; The horizontal groove of head of a nail outside decussation and vertical elongated slot design fits operation tool, it is simple to operation to hold nail, and the anatomic passages wound is little, and particularly the wound cross section is little.
During use the vertebral column minimally invasive pedicle screw is inserted holding sleeve from the nut upper end, the horizontal projection that pedicle screw is controlled the barrel forward end inwall cooperates pedicle screw head of a nail outside groove, with moving up and down of restriction screw axial; Pedicle screw is controlled the anti-vertical elongated slot that revolves the pin cooperation nut outside of sleeve lining, limits rotatablely moving of screw axial.Utilize simultaneously the elasticity of Wicresoft's sleeve pipe front-end architecture, move forward being connected between locking and the pedicle screw by lock sleeve, can strengthen by lock screw at last fixing.Little cyclone during removal can nail on it and extract from pedicle of vertebral arch screw.
Compared with prior art, good effect of the present utility model is:
(1) unique Wicresoft's sleeve lining is anti-revolves pin and horizontal projection design, cooperates with pedicle screw, limits the motion of its a plurality of directions, easy to use in the art, holds nail and removal and operates quick effective.
(2) this utility model passes through Wicresoft's outside of sleeve projection and Flexible Design, cooperates with lock sleeve and locks, easily and effectively.
(3) this utility model is connected with pedicle nail by front end two thin-walleds, and the anatomic passages wound is little, and particularly the wound cross section greatly reduces than existing product.
[description of drawings]
A kind of vertebral column minimally invasive pedicle screw of Fig. 1 this utility model uses schematic three dimensional views to holding sleeve;
A kind of vertebral column minimally invasive pedicle screw of Fig. 2 this utility model is the holding sleeve schematic three dimensional views;
A kind of vertebral column minimally invasive pedicle screw of Fig. 3 this utility model is holding sleeve decomposition explosion figure;
Fig. 4 this utility model assembly---Wicresoft's sleeve pipe sketch map; Fig. 4 A this utility model assembly Wicresoft sleeve pipe front view; Fig. 4 B this utility model assembly Wicresoft sleeve pipe top plan view; Fig. 4 C this utility model assembly Wicresoft sleeve pipe schematic three dimensional views;
Fig. 5 this utility model assembly---lock sleeve sketch map; Fig. 5 A this utility model assembly lock sleeve elevational cross-sectional view; Fig. 5 B this utility model assembly lock sleeve left view; Fig. 5 C this utility model assembly lock sleeve top view; Fig. 5 D this utility model assembly lock sleeve schematic three dimensional views;
Fig. 6 this utility model assembly---chute pin sketch map; Fig. 6 A this utility model assembly chute pin front view; Fig. 6 B this utility model assembly chute pin top view;
Fig. 7 this utility model assembly---lock-screw sketch map; Fig. 7 A this utility model assembly lock-screw front view; Fig. 7 B this utility model assembly lock-screw top view;
Fig. 8 this utility model assembly---the anti-pin sketch map that revolves; The anti-pin front view that revolves of Fig. 8 A this utility model assembly; The anti-pin top view that revolves of Fig. 8 B this utility model assembly; The anti-pin 3-D view that revolves of Fig. 8 C this utility model assembly;
Fig. 9 this utility model coupling Wicresoft pedicle screw schematic three dimensional views;
Figure 10 this utility model and pedicle screw assembling two dimensional representation; Figure 10 A this utility model sectional arrangement drawing; Figure 10 B this utility model assembling left view.
Label in the accompanying drawing is: 1, hollow pedicle screw, 11, nut, 111, U-shaped groove I, 112, female thread, 115, horizontal groove, 116, vertical elongated slot, 117, cylinder I, 118, groove I, 12, rivet nut, 13, packing washer, 2, Wicresoft's pedicle screw is holding sleeve, and 21, Wicresoft's sleeve pipe, 211, U-shaped elongated slot, 212, through hole I, 213, the gradual change projection, 214, front end hangs down incisura thin-walled, 215, the inwall cylinder, 216, horizontal projection, 217, aperture, 218, elongated slot, 219, groove II, 22 lock sleeves, 221, through hole II, 222, U-shaped groove II, 223, screwed hole I, 224, groove, 225, projection I, 226, projection II, 227 screwed hole II, 23, the chute pin, 231, cylinder II, 232 external screw thread I, 233, flat recess, 24, lock-screw, 241, external screw thread II, 242, inner hexagonal hole II, 25 anti-revolve pin, 251, cylinder II, 252, hemisphere.
[specific embodiment]
Below provide a kind of vertebral column minimally invasive pedicle screw of this utility model the specific embodiment of holding sleeve.
Embodiment 1
Accompanying drawing 1 is that a kind of vertebral column minimally invasive pedicle screw of this utility model is holding sleeve rigging screw schematic three dimensional views; Accompanying drawing 2 and Fig. 3 are respectively schematic three dimensional views of the present utility model and explosive view; Fig. 4 is each assembly sketch map of this utility model to accompanying drawing 8, and Fig. 9 is this utility model coupling pedicle screw sketch map, and Figure 10 is this utility model and pedicle screw assembling two dimensional representation.
A kind of vertebral column minimally invasive pedicle screw is holding sleeve 2, by Wicresoft's sleeve pipe 21, lock sleeve 22, chute pin 23, lock screw 24 with anti-ly revolve pin 25 and form.Lock sleeve 22 is placed in outside Wicresoft's sleeve pipe 21; Chute pin 23 is connected lock sleeve 22 with Wicresoft sleeve pipe 21, lock sleeve 22 can be moved in limited range in the axial direction with Wicresoft sleeve pipe 21; Can lock sleeve 22 is fixing with Wicresoft's sleeve pipe 21 by lock screw 24; Anti-revolve pin 25 and be connected in Wicresoft's sleeve pipe 21 front ends, the rotation that the pedicle screw that is connected with Wicresoft sleeve pipe 21 in order to restriction 1 is axial.
Described Wicresoft sleeve pipe 21 is hollow design 212; Front end is provided with U-shaped elongated slot 211, and U-shaped groove 211 is divided into both sides with the sleeve pipe front end; The outside, two side is provided with a gradual change projection 213; Sidewall fore-end thin-walled 214 can reduce the wound to tissue better; Front end inboard, two side is column 215, with pedicle screw head of a nail outside coupling; The inboard front end in two side is provided with horizontal projection 216, cooperates pedicle screw head of a nail outside groove, with moving up and down of restriction screw axial; The two side front end is respectively equipped with string or multiple row aperture 217, to revolve the pin connection with being connected; Wicresoft's sleeve pipe 21 is provided with the elongated slot 218 of two symmetries, to cooperate chute pin 23 lock sleeve 22 can be moved up and down vertically; Wicresoft's sleeve pipe 21 is provided with groove II219, uses to cooperate other operation tools.
Described lock sleeve 22 is hollow design 221, and front end is provided with U-shaped groove II222, and U-shaped groove II222 is divided into both sides with lock sleeve 22; The two side is respectively equipped with a screwed hole I223, cooperates chute pin 23; Outside, lock sleeve 22 both sides respectively is provided with a recess 224, in order to control; Recess 224 front-end and back-end respectively are provided with a projection 225,226, use with convenient, are beneficial to and control; The locker rear end is provided with a screwed hole II227, cooperates with lock screw 24, in order to fixing and locking cover 22 and Wicresoft's sleeve pipe 21.
Described chute pin 23, one ends are provided with external screw thread I232, and head is provided with flat recess 233; The other end is cylinder II231, and nose circle is blunt.
Described lock screw 24 is provided with external screw thread II241, and an end is provided with inner hexagonal hole II242.
Described resisting revolved pin 25, is cylinder II251, and an end is spherical 252.
A kind of vertebral column minimally invasive pedicle screw is holding sleeve, and its assembling process is: will resist and revolve pin 25 insertion Wicresoft sleeve pipe 21 front end apertures 217, and with Wicresoft's sleeve pipe 21 welding and with surface finish; Lock sleeve 22 is placed in outside Wicresoft's sleeve pipe 21; Chute pin 23 is screwed among the lock sleeve 22 both sides screwed hole I223, and front end inserts in Wicresoft's sleeve pipe elongated slot 218, so far lock sleeve 22 is connected with Wicresoft sleeve pipe 21, and lock sleeve 22 can move in limited range in the axial direction with Wicresoft sleeve pipe 21; Be screwed into lock screw 24 at lock sleeve 22.
A kind of vertebral column minimally invasive pedicle screw uses holding sleeve 2 matching with micro-traumatic pedicle screws 1, and a kind of Wicresoft pedicle screw is comprised of the head of a nail 11, rivet nut 12, packing washer 13, and rivet nut 12 is passed the head of a nail 11, and spacing fixing by packing washer 13.
The described head of a nail 11, one ends are provided with U-shaped groove I111, and U-shaped groove I opening one end inwall is provided with female thread 112; The inwall main body is cylinder I117, and two side has and the axial vertical groove I118 of the head of a nail on it; The other end is provided with spherical mortar cup I and through hole I; The outside, the head of a nail 11 two ends pars intermedia is provided with respectively one or more horizontal grooves 115, is used to limit axially moving up and down of screw with operation tool; The head of a nail outside respectively is provided with one or more vertical elongated slots 116 along its axis direction in the middle of both sides, cooperate operation tool to use in order to limit screw around axial rotatablely moving; The horizontal groove of head of a nail outside decussation and vertical elongated slot design fits operation tool, it is simple to operation to hold nail, and the anatomic passages wound is little, and particularly the wound cross section is little.
During use the vertebral column minimally invasive pedicle screw is inserted holding sleeve from nut 11 upper ends, the horizontal projection 216 of its front inner wall cooperates pedicle screw head of a nail outside groove 115, with moving up and down of restriction screw axial; The anti-vertical elongated slot 116 that revolves the pin 25 cooperation nut outsides of its inwall limits rotatablely moving of screw axial.Utilize simultaneously the elasticity of Wicresoft's sleeve pipe 21 front-end architectures, move forward being connected between locking and the pedicle screw 1 by lock sleeve 22, can strengthen fixing by lock screw 24 at last.Little cyclone during removal can nail on it and extract from pedicle of vertebral arch screw.
The above only is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, without departing from the concept of the premise utility; can also make some improvements and modifications, these improvements and modifications also should be considered as in the protection domain of the present utility model.

Claims (6)

1. a vertebral column minimally invasive pedicle screw is characterized in that holding sleeve, by Wicresoft's sleeve pipe, lock sleeve, chute pin, lock screw with anti-ly revolve pin and form; Lock sleeve is placed in outside Wicresoft's sleeve pipe; The chute pin is telescopic joint with lock sleeve and Wicresoft, and lock sleeve can be moved in limited range in the axial direction with Wicresoft's sleeve pipe; Lock sleeve and Wicresoft's sleeve pipe can be fixed by lock screw; Anti-revolve pin and be positioned at Wicresoft's sleeve pipe front end, in order to the axial rotation of the telescopic joint pedicle screw of restriction and Wicresoft.
Such as claim 1 vertebral column minimally invasive pedicle screw holding sleeve, it is characterized in that described Wicresoft sleeve pipe is hollow design; Front end is provided with U-shaped elongated slot, and U-shaped groove is divided into both sides with the sleeve pipe front end; The outside, two side is provided with gradual change projection, locks cover and realizes elastic locking; Sidewall fore-end thin-walled can better reduce the wound to tissue; Be respectively equipped with string or multiple row aperture on the two side, to revolve the pin connection with being connected, the restriction screw axial rotatablely moves; The inboard front end in two side is provided with horizontal projection, cooperates pedicle screw head of a nail outside groove, with moving up and down of restriction screw axial; Wicresoft's sleeve pipe is provided with the elongated slot of two symmetries, to cooperate the chute pin lock sleeve can be moved up and down vertically; Wicresoft's sleeve pipe is provided with groove II.
Such as claim 1 vertebral column minimally invasive pedicle screw holding sleeve, it is characterized in that described lock sleeve is hollow design, front end is provided with U-shaped groove II, U-shaped groove II is divided into both sides with lock sleeve; The two side is respectively equipped with a screwed hole I, cooperates the chute pin; Outside, lock sleeve both sides respectively is provided with a recess; The recess front-end and back-end respectively are provided with a projection; The locker rear end is provided with a screwed hole II, cooperates with lock screw, in order to fixing and locking cover and Wicresoft's sleeve pipe.
Such as claim 1 vertebral column minimally invasive pedicle screw holding sleeve, it is characterized in that, described chute pin, an end is provided with external screw thread I, and head is provided with a word hole; The other end is cylinder II, and nose circle is blunt.
Such as claim 1 vertebral column minimally invasive pedicle screw holding sleeve, it is characterized in that described lock screw is provided with external screw thread II, an end is provided with inner hexagonal hole or plum blossom hole.
Such as claim 1 vertebral column minimally invasive pedicle screw holding sleeve, it is characterized in that describedly anti-revolve pin, for cylindric, an end be sphere.
CN 201220327648 2012-07-06 2012-07-06 Minimally-invasive spine pedicle-screw holding sleeve Expired - Fee Related CN202637097U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220327648 CN202637097U (en) 2012-07-06 2012-07-06 Minimally-invasive spine pedicle-screw holding sleeve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220327648 CN202637097U (en) 2012-07-06 2012-07-06 Minimally-invasive spine pedicle-screw holding sleeve

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014005378A1 (en) * 2012-07-06 2014-01-09 常州市康辉医疗器械有限公司 Minimally invasive and percutaneous internal fixation device
CN104095673A (en) * 2014-03-11 2014-10-15 无锡市闻泰百得医疗器械有限公司 Vertebral pedicle screw sleeve
CN104905872A (en) * 2015-05-12 2015-09-16 山东威高骨科材料股份有限公司 Tong head of fog type tongs
CN106361425A (en) * 2015-07-24 2017-02-01 比德尔曼技术有限责任两合公司 Polyaxial bone anchoring device and instrument for use with the same
CN107260280A (en) * 2017-06-29 2017-10-20 闻泰医疗科技(上海)有限公司 Pedicle nail lifts component
WO2020088127A1 (en) * 2018-11-02 2020-05-07 河北瑞鹤医疗器械有限公司 Single-sided screw holder

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014005378A1 (en) * 2012-07-06 2014-01-09 常州市康辉医疗器械有限公司 Minimally invasive and percutaneous internal fixation device
CN104095673A (en) * 2014-03-11 2014-10-15 无锡市闻泰百得医疗器械有限公司 Vertebral pedicle screw sleeve
CN104095673B (en) * 2014-03-11 2016-06-15 无锡市闻泰百得医疗器械有限公司 A kind of pedicle nail sleeve pipe
CN104905872A (en) * 2015-05-12 2015-09-16 山东威高骨科材料股份有限公司 Tong head of fog type tongs
US11191572B2 (en) 2015-07-24 2021-12-07 Biedermann Technologies Gmbh & Co. Kg Polyaxial bone anchoring device and instrument for use with the same
CN106361425B (en) * 2015-07-24 2021-06-11 比德尔曼技术有限责任两合公司 Polyaxial bone anchoring device and instruments for use therewith
US11083499B2 (en) 2015-07-24 2021-08-10 Biedermann Technologies Gmbh & Co. Kg Polyaxial bone anchoring device and instrument for use with the same
CN106361425A (en) * 2015-07-24 2017-02-01 比德尔曼技术有限责任两合公司 Polyaxial bone anchoring device and instrument for use with the same
US11399874B2 (en) 2015-07-24 2022-08-02 Biedermann Technologies Gmbh & Co. Kg Polyaxial bone anchoring device and instrument for use with the same
US12029452B2 (en) 2015-07-24 2024-07-09 Biedermann Technologies Gmbh & Co. Kg Polyaxial bone anchoring device and instrument for use with the same
CN107260280A (en) * 2017-06-29 2017-10-20 闻泰医疗科技(上海)有限公司 Pedicle nail lifts component
CN107260280B (en) * 2017-06-29 2023-04-07 闻泰医疗科技(上海)有限公司 Pedicle screw lifting assembly
WO2020088127A1 (en) * 2018-11-02 2020-05-07 河北瑞鹤医疗器械有限公司 Single-sided screw holder
US11311319B2 (en) 2018-11-02 2022-04-26 Hebei Ruihe Medical Devices Co., Ltd. Unilateral nail holder

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GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20130102

Termination date: 20190706