CN103519876B - Internal fixing device for minimally-invasive percutaneous penetration - Google Patents
Internal fixing device for minimally-invasive percutaneous penetration Download PDFInfo
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- CN103519876B CN103519876B CN201210233886.5A CN201210233886A CN103519876B CN 103519876 B CN103519876 B CN 103519876B CN 201210233886 A CN201210233886 A CN 201210233886A CN 103519876 B CN103519876 B CN 103519876B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
- A61B17/7076—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
- A61B17/7037—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other wherein pivoting is blocked when the rod is clamped
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/03—Automatic limiting or abutting means, e.g. for safety
- A61B2090/037—Automatic limiting or abutting means, e.g. for safety with a frangible part, e.g. by reduced diameter
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Neurology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to an internal fixing device for minimally-invasive percutaneous penetration. The internal fixing device comprises a minimally-invasive holding sleeve and a minimally-invasive pedicle screw. The minimally-invasive holding sleeve is composed of a minimally-invasive casing pipe, a locking sleeve, a sliding groove pin, a locking screw and an anti-rotation pin. The minimally-invasive pedicle screw is composed of a screw cap, a screw body and a pressing washer. A horizontal protrusion of the inner wall of the front end of the minimally-invasive holding sleeve and the anti-rotation pin are matched with a cross-shaped groove of the outer side of the screw cap of the minimally-invasive pedicle screw, so that the multi-direction movement of the screw is limited. Automatic bar pressing can be achieved in an operation through the lengthening design of the screw cap of the minimally-invasive pedicle screw, bar penetrating is simple, the protrusion of the outer side of the minimally-invasive holding sleeve and the elastic design are utilized to lock the screw in the use process, and the screw is reinforced and fixed through the locking screw. The internal fixing device has the advantages that as the unique design of the inner wall of the minimally-invasive holding sleeve is matched with the cross-shaped groove of the outer side of the screw cap of the minimally-invasive pedicle screw, screw holding and dismantling operation is simple, fast and effective; due to the design of the two thin walls of the front end of the holding sleeve, trauma of tissue channels is small; the problems of difficulty of bar penetrating and complexity of locking and pressurizing of the screw cap and the like in the operation can be solved.
Description
[technical field]
The present invention relates to surgical medical equipment technical field, specifically, being that one is micro-wound percutaneous enters inner fixing device.
[background technology]
Along with operating theater instruments continuous renewal, the advanced continuous appearance of medical imaging equipment and the application of art Computer assisting navigation, less invasive techniques develops very fast in spinal surgery.Wicresoft refers to the one operation or the test mode that reach best operative effect with minimum invasion and attack and the interference of minimum physiology, and topmost feature is wound microminiaturization.Surgical operation is as planned wound, and patient should make every effort to the wound of operation be reduced to bottom line, reaches the object of Wicresoft.Minimally Invasive Surgery reduces operating time, reduces the sickness rate of complication, and alleviate Shu Zhong tissue injury and hemorrhage, shorten patient recovery times, alleviating operation pain, is that otch is attractive in appearance, shortens and is in hospital and rehabilitation duration, reduces the Financial cost of drug use and hospital costs.In a word, Minimally Invasive Surgery meets the requirement of harmonious society to public medical and health cause from medical science professional attributes and social property these two aspects, along with the development of science and technology, vertebral column minimally invasive technology, using the part as conventional surgical techniques, becomes a main trend of internal fixation of spine technical development.
Found by the research of the Wicresoft's system design to current several famous brand names in the world, although the tool design of existing international Related product can both meet the basic demand of vertebral column minimally invasive, but problem is that design concept is complicated, operating process is loaded down with trivial details, the surgeon needing very high skill experience could complete operation smoothly, and this just hinders popularizing of minimally invasive spine surgical greatly; On the other hand, for vertebral column minimally invasive implant, existing pedicle screw has two classes substantially, and a class is common standard nail, and a class is long-tail nail.Common standard nail realizes operation technique by branch sleeve, and now the size of sleeve pipe determines the size to tissue injury; The afterbody of the lengthening of long-tail nail self itself serves the effect of sleeve pipe, easy to use, but the afterbody that rear portion lengthens especially needs to fracture to abandon in art, and work in-process waste material, be a kind of waste to material itself.Although can both meet the basic demand of vertebral column minimally invasive when coordinating operation tool to use, problem is that its operating process is loaded down with trivial details, also exists and wears the problems such as rod is difficult, the locking compress of nut is complicated.Therefore a kind of vertebral column minimally invasive system with independent intellectual property right is provided, reaches that Minimally Invasive Surgery wound minimizes, the process of whole operation is simple and instrument is convenient and reliable, has very important meaning.
[summary of the invention]
The object of the present invention is to provide and a kind of micro-wound percutaneously enter inner fixing device, simple to operate, little to skin injury, the problems such as locking compress is complicated of wearing rod difficulty, nut can be solved simultaneously.
The object of the invention is to be achieved through the following technical solutions:
One is micro-wound percutaneous enters inner fixing device, and comprise Wicresoft holding sleeve and Wicresoft's pedicle screw, Wicresoft uses holding sleeve matching with micro-traumatic pedicle screw; It is characterized in that, horizontal groove outside the head of a nail of the horizontal projection matching with micro-traumatic pedicle screw of Wicresoft's holding barrel forward end inwall, to limit screw axial motion; Wicresoft is the anti-vertical elongated slot revolving pin and coordinate nut side of the inwall of holding sleeve, and restriction screw is around the rotary motion of axis; By Wicresoft, the lock sleeve of holding sleeve is moved forward the connection of locking between itself and Wicresoft's pedicle screw, the lock screw of holding sleeve is strengthened fixing finally by Wicresoft.
Described Wicresoft holding sleeve, by Wicresoft's sleeve pipe, lock sleeve, chute pin, lock screw with anti-revolve pin and form.Lock sleeve is placed on outside Wicresoft's sleeve pipe; Chute pin by lock sleeve and Wicresoft telescopic joint, lock sleeve can be moved in the axial direction with Wicresoft's sleeve pipe in limited range; 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 rotation of the restriction pedicle screw axis telescopic joint with Wicresoft.
Described Wicresoft's sleeve pipe is hollow design; Front end is provided with U-shaped elongated slot, and sleeve pipe front end is divided into both sides by U-type groove; Be provided with a gradual change outside two side protruding, lock cover and realize elastic locking; Sidewall fore-end thin-walled, better can reduce the wound to tissue; Two side is respectively equipped with string or multiple row aperture, to revolve pin is connected with anti-, limits screw axial rotary motion; Two side inside front ends is provided with horizontal projection, coordinates groove outside the pedicle screw head of a nail, to limit moving up and down of screw axial; Wicresoft's sleeve pipe is provided with the elongated slot of two symmetries, to coordinate chute pin, lock sleeve can be moved up and down vertically; Wicresoft's sleeve pipe is provided with groove III, uses to coordinate other operation tools.
Described lock sleeve, be hollow design, front end is provided with U-type groove III, and lock sleeve is divided into both sides by U-type groove III; Two side is respectively equipped with a screwed hole I, coordinates chute pin; Outside, lock sleeve both sides is respectively provided with a recess, in order to hold; Recess front-end and back-end are respectively provided with a projection, with easy to use, are beneficial to holding; Locker rear end is provided with a screwed hole II, coordinates with lock screw, in order to fixing and locking cover and Wicresoft's sleeve pipe.
Described chute pin, one end is provided with external screw thread I, and head is provided with flat recess; The other end is cylinder III, and nose circle is blunt.
Described lock screw, is provided with external screw thread II, and one end is provided with inner hexagonal hole or plum blossom hole.
Described anti-ly revolve pin, be cylinder IV shape, one end is spherical.
A kind of Wicresoft is holding sleeve, and its assembling process is: the anti-pin that revolves is inserted Wicresoft's sleeve pipe front end aperture, and welds with Wicresoft sleeve pipe and by surface finish; Lock sleeve is placed on outside Wicresoft's sleeve pipe; Be screwed into by chute pin in the screwed hole of lock sleeve both sides, front end is inserted in Wicresoft sleeve pipe elongated slot, so far by lock sleeve and Wicresoft telescopic joint, and lock sleeve can move in the axial direction with Wicresoft's sleeve pipe in limited range; Lock sleeve is screwed into lock screw.
A kind of Wicresoft uses holding sleeve matching with micro-traumatic pedicle screw.
Wicresoft's pedicle screw is made up of the head of a nail, rivet nut, packing washer, and rivet nut through the head of a nail, and is fixed by packing washer is spacing.
The described head of a nail, head of a nail afterbody comparatively standard nail is provided with elongated portion, can realize pressure bar voluntarily, and it is simple to wear rod in art; One end is provided with U-type groove I, and U-type groove I open at one end inwall is provided with female thread I; Inwall main body is cylinder I, and on it, two side has the groove I axially vertical with the head of a nail and groove II; The other end is provided with spherical mortar cup I and through hole I; Outside head of a nail two ends, middle side part is respectively equipped with one or more horizontal groove, moves up and down with the use of the axis in order to limit screw with operation tool; In the middle of both sides, be respectively provided with one or more vertical elongated slot along its axis direction outside the head of a nail, coordinate operation tool to use in order to limit the rotary motion of screw around axis; The horizontal groove of decussation and longitudinal elongated slot design fits operation tool outside the head of a nail, hold nail simple to operation, anatomic passages wound is little, and particularly wound cross section is little.
Described rivet nut head is provided with spherical mortar body and inner hexagonal hole I, and spherical mortar end of body is provided with some steps, and the spherical mortar body of rivet nut head coordinates with the spherical mortar cup II on the spherical mortar cup I on the head of a nail and packing washer; Rivet nut body portion is provided with reducing screw thread, and footpath at the bottom of head proximal threads is comparatively large, and at the bottom of head distal threads, footpath is less, and tip diminishes gradually, adds the hold of screw; Rivet nut body spiro stricture of vagina is multiple thread, can increase the hold of screw, and it is fast to enter nail; Rivet nut is hollow design.
Described packing washer, be provided with through hole III, one end has U-type groove II, and two edges projection is stuck in the groove I place of head of a nail inwall in order to spacing, and packing washer lower end is provided with spherical mortar cup II, and packing washer outside main body is cylinder II, mates with head of a nail inwall body cylindrical I.
This pedicle screw assemble flow is: first by the through hole I place of rivet nut through the head of a nail, its bulb mortar body coordinates with the spherical mortar cup I of the head of a nail; Snapped in by packing washer, the spherical mortar cup II of packing ring coordinates with the spherical mortar body of rivet nut again, and two edges projection is stuck in the groove I place of the head of a nail; After assembling, rivet nut and packing washer can not be deviate from from the head of a nail.
Pedicle screw head of a nail elongated portion makes pedicle screw in art after rod implantation, and use lock screw coordinates upper nail instrument directly can be screwed into pressure bar, simple to operate.This part fractures by postoperative period again.
The present invention can be used for Minimally Invasive Surgery, also can be used for open surgery and spine corrective operation.
During use, Wicresoft is inserted nut side holding sleeve from top, the horizontal projection of sleeve pipe front inner wall coordinates groove outside the pedicle screw head of a nail, to limit screw axial motion; The anti-vertical elongated slot revolving pin and coordinate nut side of device inwall, restriction screw is around the rotary motion of axis.Utilize the elasticity of Wicresoft's sleeve pipe front-end architecture simultaneously, move forward the connection between locking and pedicle screw by lock sleeve, finally strengthen by lock screw fixing.It, holding sleeve, can nail on from pedicle of vertebral arch screw and extract by removal Shi Weixuan Wicresoft.
Compared with prior art, good effect of the present invention is:
(1) unique Wicresoft's sleeve lining is anti-revolves pin with horizontal projection design, coordinates, limit the motion of its multiple directions with pedicle screw nut side cross recess, easy to use in art, holds nail and removal operates quick effective.
(2) the present invention is by Wicresoft's outside of sleeve projection and Flexible Design, coordinates and locks, easily and effectively with lock sleeve.
(3) the present invention is connected with pedicle nail by front end two thin-walled, and anatomic passages wound is little, and particularly wound cross section greatly reduces than existing product.
(4) the orthogonal cross groove designs of pedicle screw head of a nail side of the present invention uniqueness, holds nail simple to operate;
(5) pedicle screw head of a nail elongated portion of the present invention coordinates operation tool to use lock screw can realize the pressurization voluntarily of rod, and it is simple to wear rod;
(6) this practical pedicle screw rivet nut screw thread multiple thread variable diameter design can increase the hold of screw and to enter nail speed fast;
(7) this real invention pedicle screw rivet nut is hollow design, can be used for Minimally Invasive Surgery, also can be used for open surgery and spine corrective operation.
[accompanying drawing explanation]
A kind of vertebral column minimally invasive percutaneous of Fig. 1 the present invention enters inner fixing device schematic three dimensional views;
Fig. 2 invention components---Wicresoft is the schematic three dimensional views of holding sleeve;
Fig. 3 invention components---Wicresoft is holding sleeve decomposition explosion figure;
Fig. 4 invention components---Wicresoft's sleeve pipe schematic diagram; Fig. 4 A invention components Wicresoft sleeve pipe front view; Fig. 4 B invention components Wicresoft sleeve pipe top plan view; Fig. 4 C invention components Wicresoft sleeve pipe schematic three dimensional views;
Fig. 5 invention components---lock sleeve schematic diagram; Fig. 5 A invention components lock sleeve elevational cross-sectional view; Fig. 5 B invention components lock sleeve left view; Fig. 5 C invention components lock sleeve top view; Fig. 5 D invention components lock sleeve schematic three dimensional views;
Fig. 6 invention components---chute pin schematic diagram; Fig. 6 A invention components chute pin front view; Fig. 6 B invention components chute pin top view;
Fig. 7 invention components---lock-screw schematic diagram; Fig. 7 A invention components lock-screw front view; Fig. 7 B invention components lock-screw top view;
Fig. 8 invention components---resist and revolve pin schematic diagram; Fig. 8 A invention components is anti-revolves pin front view; Fig. 8 B invention components is anti-revolves pin top view; Fig. 8 C invention components is anti-revolves pin 3-D view;
Fig. 9 invention components---Wicresoft's hollow pedicle screw schematic three dimensional views;
Figure 10 invention components---Wicresoft's hollow pedicle screw two dimensional representation; Figure 10 A invention components---Wicresoft's hollow pedicle screw front view; Figure 10 B invention components---Wicresoft's hollow pedicle screw left view;
Figure 11 the present invention assembles two dimensional representation; Figure 11 A sectional arrangement drawing of the present invention; Figure 11 B the present invention assembles left view.
Label in accompanying drawing is: 1, hollow pedicle screw, 11, nut, 111, U-type groove I, 112, female thread, 113, spherical mortar cup I, 114, through hole I, 115, horizontal groove, 116, longitudinal elongated slot, 117, cylinder I, 118, groove I, 119, groove II, 1110, elongated portion, 12, rivet nut, 121, spherical mortar body, 122, step, 123, inner hexagonal hole I, 124, reducing multiple thread, 125, through hole II, 13, packing washer, 131, cylinder II, 132, U-type groove II, 133, through hole III, 134, spherical mortar cup II, 135, protruding I, 2, Wicresoft holding sleeve, 21, Wicresoft's sleeve pipe, 211, U-shaped elongated slot, 212, through hole IV, 213, gradual change is protruding, and 214, the low incisura thin-walled in front end, 215, inwall cylinder, 216, horizontal projection, 217, aperture, 218, elongated slot, 219, groove III, 22 lock sleeves, 221, through hole V, 222, U-type groove III, 223, screwed hole I, 224, groove, 225, protruding II, 226, protruding III, 227 screwed hole II, 23, chute pin, 231, cylinder III, 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 IV, 252, hemisphere.
[detailed description of the invention]
A kind of spinal column percutaneous of the present invention is below provided to enter the detailed description of the invention of inner fixing device.
Embodiment 1
Accompanying drawing 1 is that a kind of spinal column percutaneous of the present invention enters inner fixing device schematic three dimensional views; Accompanying drawing 2 to accompanying drawing 8 be invention components Wicresoft holding sleeve schematic diagram, Fig. 9 and Figure 10 is invention components Wicresoft pedicle screw schematic diagram, and Figure 11 is that the present invention assembles two dimensional representation.
One is micro-wound percutaneous enters inner fixing device, comprises Wicresoft holding sleeve 2 and Wicresoft's pedicle screw 1.
A kind of Wicresoft 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 on outside Wicresoft's sleeve pipe 21; Lock sleeve 22 is connected with Wicresoft sleeve pipe 21 by chute pin 23, and lock sleeve 22 can be moved in the axial direction with Wicresoft sleeve pipe 21 in limited range; Lock sleeve 22 and Wicresoft's sleeve pipe 21 can be fixed by lock screw 24; Anti-revolve pin 25 and be connected to Wicresoft's sleeve pipe 21 front end, the rotation of pedicle screw 1 axis be connected with Wicresoft sleeve pipe 21 in order to restriction.
Described Wicresoft's sleeve pipe 21 is hollow design 212; Front end is provided with U-shaped elongated slot 211, and sleeve pipe front end is divided into both sides by U-type groove 211; Be provided with a gradual change projection 213 outside two side, lock cover and realize elastic locking; Sidewall fore-end thin-walled 214, can reduce the wound to tissue better; Two side leading inside is column 215, mates with outside the pedicle screw head of a nail; Two side inside front ends is provided with horizontal projection 216, coordinates groove outside the pedicle screw head of a nail, to limit moving up and down of screw axial; Front end, two side is respectively equipped with string or multiple row aperture 217, to revolve pin be connected with anti-; Wicresoft's sleeve pipe 21 is provided with the elongated slot 218 of two symmetries, to coordinate chute pin 23, lock sleeve 22 can be moved up and down vertically; Wicresoft's sleeve pipe 21 is provided with groove III219, uses to coordinate other operation tools.
Described lock sleeve 22, be hollow design 221, front end is provided with U-type groove 222, and lock sleeve 22 is divided into both sides by U-type groove 222; Two side is respectively equipped with a screwed hole I223, coordinates chute pin 23; Outside, lock sleeve 22 both sides is respectively provided with a recess 224, in order to hold; Recess 224 front-end and back-end are respectively provided with a projection 225,226, with easy to use, are beneficial to holding; Locker rear end is provided with a screwed hole II227, coordinates with lock screw 24, in order to fixing and locking cover 22 and Wicresoft's sleeve pipe 21.
Described chute pin 23, one end is provided with external screw thread I232, and head is provided with flat recess 233; The other end is cylinder III231, and nose circle is blunt.
Described lock screw 24, is provided with external screw thread II241, and one end is provided with inner hexagonal hole II242.
Described anti-ly revolve pin 25, be cylinder IV shape 251, one end is spherical 252.
A kind of Wicresoft is holding sleeve 2, and its assembling process is: revolve pin 25 insert Wicresoft's sleeve pipe 21 front end aperture 217 by anti-, and welds with Wicresoft sleeve pipe 21 and by surface finish; Lock sleeve 22 is placed on outside Wicresoft's sleeve pipe 21; Be screwed into by chute pin 23 in lock sleeve 22 both sides screwed hole 223, front end to insert in Wicresoft sleeve pipe elongated slot 218, is so far connected with Wicresoft sleeve pipe 21 by lock sleeve 22, and lock sleeve 22 can move in the axial direction with Wicresoft sleeve pipe 21 in limited range; Lock sleeve 22 is screwed into lock screw 24.
A kind of Wicresoft uses holding sleeve 2 matching with micro-traumatic pedicle screw 1, and a kind of Wicresoft pedicle screw is made up of the head of a nail 11, rivet nut 12, packing washer 13, and rivet nut 12 through the head of a nail 11, and is fixed by packing washer 13 is spacing.
The described head of a nail 11, head of a nail afterbody comparatively standard nail is provided with elongated portion 1110, can realize pressure bar voluntarily, and it is simple to wear rod in art; One end is provided with U-type groove I111, and U-type groove I111 open at one end inwall is provided with female thread I112; Inwall main body is cylinder I117, and on it, two side has the groove I118 axially vertical with the head of a nail and groove II 119; The other end is provided with spherical mortar cup I113 and through hole I114; Outside head of a nail two ends, middle side part is respectively equipped with a horizontal groove 115, moves up and down with the use of the axis in order to limit screw with operation tool; In the middle of both sides, be respectively provided with a vertical elongated slot 116 along its axis direction outside the head of a nail, coordinate operation tool to use in order to limit the rotary motion of screw around axis; The wedge-shaped slot 115 of decussation and longitudinal elongated slot 116 design fits operation tool outside the head of a nail, hold nail simple to operation, anatomic passages wound is little, and particularly wound cross section is little.
Described rivet nut 12 head is provided with spherical mortar body 121 and inner hexagonal hole I123, and spherical mortar end of body is provided with some steps 122, and the spherical mortar body 121 of rivet nut head coordinates with the spherical mortar cup II 134 on the spherical mortar cup I 113 on the head of a nail and packing washer; Rivet nut body portion is provided with reducing screw thread 124, and footpath at the bottom of head proximal threads is comparatively large, and at the bottom of head distal threads, footpath is less, and tip diminishes gradually; Rivet nut body spiro stricture of vagina is multiple thread 124; Rivet nut multiple thread and reducing screw thread design can increase the hold of screw and enter nail soon; ; Rivet nut is hollow design 125.
Described packing washer 13, be provided with through hole II133, one end has U-type groove II132, the protruding I135 in two edges is stuck in the groove I118 place of head of a nail inwall in order to spacing, packing washer lower end is provided with spherical mortar cup II134, packing washer outside main body is cylinder II 131, mates with head of a nail inwall body cylindrical I117.
This Wicresoft's pedicle screw 1 assemble flow is: first by the through hole I114 place of rivet nut 12 through the head of a nail 11, its bulb mortar body 121 coordinates with the spherical mortar cup I 113 of the head of a nail; Snapped in by packing washer 13, the spherical mortar cup II134 of packing ring coordinates with the spherical mortar body 121 of rivet nut, and two edges projection 135 is stuck in the groove I118 place of the head of a nail again.After assembling, rivet nut 12 and packing washer 13 can not be deviate from from the head of a nail 11.
Holding sleeve 2 is inserted from the head of a nail 11 upper end Wicresoft during use, the horizontal projection 216 that Wicresoft holds barrel forward end inwall coordinates groove 115 outside the pedicle screw head of a nail, to limit screw axial motion; Wicresoft holds the anti-vertical elongated slot 116 revolving pin 25 and coordinate nut side of sleeve lining, and restriction screw is around the rotary motion of axis.Utilize the elasticity of Wicresoft's sleeve pipe 21 front-end architecture simultaneously, move forward the connection between locking and pedicle screw 1 by lock sleeve 22, finally strengthen by lock screw 24 fixing.Micro-cyclone during removal, can nail on it from pedicle of vertebral arch screw and extract.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, without departing from the inventive concept of the premise; can also make some improvements and modifications, these improvements and modifications also should be considered within the scope of protection of the present invention.
Claims (7)
1. micro-wound percutaneously enter an inner fixing device, comprise Wicresoft holding sleeve and Wicresoft's pedicle screw, Wicresoft uses holding sleeve matching with micro-traumatic pedicle screw; It is characterized in that, horizontal groove outside the head of a nail of the horizontal projection matching with micro-traumatic pedicle screw of Wicresoft's holding barrel forward end inwall, to limit screw axial motion; Wicresoft is the anti-vertical elongated slot revolving pin and coordinate nut side of the inwall of holding sleeve, and restriction screw is around the rotary motion of axis; By Wicresoft, the lock sleeve of holding sleeve is moved forward the connection of locking between itself and Wicresoft's pedicle screw, the lock screw of holding sleeve is strengthened fixing finally by Wicresoft.
2. as claimed in claim 1 a kind of micro-wound percutaneously enters inner fixing device, it is characterized in that, described Wicresoft holding sleeve, by Wicresoft's sleeve pipe, lock sleeve, chute pin, lock screw with anti-ly revolve pin and form; Lock sleeve is placed on outside Wicresoft's sleeve pipe; Chute pin by lock sleeve and Wicresoft telescopic joint; 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 rotation of the restriction pedicle screw axis telescopic joint with Wicresoft.
3. one as claimed in claim 2 is micro-wound percutaneous enters inner fixing device, it is characterized in that described Wicresoft's sleeve pipe is hollow design; Front end is provided with U-shaped elongated slot, and sleeve pipe front end is divided into both sides by U-type groove; Be provided with a gradual change outside two side protruding, lock cover and realize elastic locking; Sidewall fore-end thin-walled; Two side is respectively equipped with string or multiple row aperture, to revolve pin is connected with anti-, limits screw axial rotary motion; Two side inside front ends is provided with horizontal projection, coordinates groove outside the pedicle screw head of a nail, to limit moving up and down of screw axial; Wicresoft's sleeve pipe is provided with the elongated slot of two symmetries, to coordinate chute pin, lock sleeve can be moved up and down vertically; Wicresoft's sleeve pipe is provided with groove III.
4. one as claimed in claim 2 is micro-wound percutaneous enters inner fixing device, and it is characterized in that, described lock sleeve, be hollow design, front end is provided with U-type groove III, and lock sleeve is divided into both sides by U-type groove III; Two side is respectively equipped with a screwed hole I, coordinates chute pin; Outside, lock sleeve both sides is respectively provided with a recess; Recess front-end and back-end are respectively provided with a projection; Locker rear end is provided with a screwed hole II, coordinates with lock screw, in order to fixing and locking cover and Wicresoft's sleeve pipe.
5. one as claimed in claim 2 is micro-wound percutaneous enters inner fixing device, and it is characterized in that, described chute pin, one end is provided with external screw thread I, and head is provided with flat recess; The other end is cylinder III, and nose circle is blunt;
Described lock screw, is provided with external screw thread II, and one end is provided with inner hexagonal hole or plum blossom hole;
Described anti-ly revolve pin, be cylinder IV shape, one end is spherical.
6. Wicresoft is a holding sleeve, it is characterized in that, its assembling process is: the anti-pin that revolves is inserted Wicresoft's sleeve pipe front end aperture, and welds with Wicresoft sleeve pipe and by surface finish; Lock sleeve is placed on outside Wicresoft's sleeve pipe; Be screwed into by chute pin in the screwed hole I of lock sleeve both sides, front end is inserted in Wicresoft sleeve pipe elongated slot, so far by lock sleeve and Wicresoft telescopic joint; Lock sleeve is screwed into lock screw;
Described Wicresoft's pedicle screw is made up of the head of a nail, rivet nut, packing washer, and rivet nut through the head of a nail, and is fixed by packing washer is spacing;
The described head of a nail, head of a nail afterbody comparatively standard nail is provided with elongated portion; One end is provided with U-type groove I, and U-type groove I open at one end inwall is provided with female thread; Inwall main body is cylinder I, and on it, two side has the groove I axially vertical with the head of a nail and groove II; The other end is provided with spherical mortar cup I and through hole I; Outside head of a nail two ends, middle side part is respectively equipped with one or more horizontal groove; In the middle of both sides, one or more vertical elongated slot is respectively provided with along its axis direction outside the head of a nail.
7. a kind of Wicresoft as claimed in claim 6 is holding sleeve, it is characterized in that, described rivet nut head is provided with spherical mortar body and inner hexagonal hole I, and spherical mortar end of body is provided with some steps, and the spherical mortar body of rivet nut head coordinates with the spherical mortar cup II on the spherical mortar cup I on the head of a nail and packing washer; Rivet nut body portion is provided with reducing screw thread, and footpath at the bottom of head proximal threads is comparatively large, and at the bottom of head distal threads, footpath is less, and tip diminishes gradually; Rivet nut body spiro stricture of vagina is multiple thread; Rivet nut is hollow design;
Described packing washer, be provided with through hole III, one end has U-type groove II, and two edges projection is stuck in the groove I place of head of a nail inwall in order to spacing, and packing washer lower end is provided with spherical mortar cup II, and packing washer outside main body is cylinder II, mates with head of a nail inwall body cylindrical I.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210233886.5A CN103519876B (en) | 2012-07-06 | 2012-07-06 | Internal fixing device for minimally-invasive percutaneous penetration |
| PCT/CN2012/081888 WO2014005378A1 (en) | 2012-07-06 | 2012-09-25 | Minimally invasive and percutaneous internal fixation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210233886.5A CN103519876B (en) | 2012-07-06 | 2012-07-06 | Internal fixing device for minimally-invasive percutaneous penetration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103519876A CN103519876A (en) | 2014-01-22 |
| CN103519876B true CN103519876B (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210233886.5A Active CN103519876B (en) | 2012-07-06 | 2012-07-06 | Internal fixing device for minimally-invasive percutaneous penetration |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103519876B (en) |
| WO (1) | WO2014005378A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103989517B (en) * | 2014-05-07 | 2016-12-07 | 广州医科大学附属第一医院 | The guider of the solid pedicle nail of Thoracolumbar disk |
| CN104188718A (en) * | 2014-09-17 | 2014-12-10 | 常州市康辉医疗器械有限公司 | Lengthened minimally-invasive hollow pedicle screw |
| CN104905872B (en) * | 2015-05-12 | 2017-05-31 | 山东威高骨科材料股份有限公司 | A kind of breast-stroke clamps binding clip |
| CN104783879B (en) * | 2015-05-12 | 2017-07-11 | 山东威高骨科材料股份有限公司 | A kind of pedicle screw and pressure bar device |
| US9615855B2 (en) * | 2015-05-15 | 2017-04-11 | Baui Biotech Co., Ltd. | Bone screw and percutaneous minimally invasive pedicle fixation system |
| CN105832394A (en) * | 2016-02-26 | 2016-08-10 | 邓宇 | Posterior minimally invasive screw-rod fixation skin-outer resetting system for thoracolumbar vertebral fracture |
| CN105662564A (en) * | 2016-02-26 | 2016-06-15 | 邓宇 | Fixing sleeve of thoracolumbar vertebral fracture posterior minimally-invasive nail rod fixing external skin restoration system |
| EP3708097B1 (en) * | 2017-12-22 | 2023-06-14 | Biedermann Technologies GmbH & Co. KG | Polyaxial bone anchoring device and system of an instrument and a polyaxial bone anchoring device |
| CN108324357B (en) * | 2018-03-14 | 2024-04-30 | 熊鹰 | Minimally invasive drifting fixed support device |
| CN110432963A (en) * | 2019-08-26 | 2019-11-12 | 牛国旗 | A kind of pedicle of vertebral arch Minimally Invasive Surgery instrument |
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| CN201631368U (en) * | 2009-12-31 | 2010-11-17 | 上海微创骨科医疗科技有限公司 | Hidden reset pedicle screw with fractured surface |
| DE202011051211U1 (en) * | 2011-09-06 | 2011-12-01 | Aesculap Ag | Polyaxial pedicle screw with provisional fixation |
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| US8002798B2 (en) * | 2003-09-24 | 2011-08-23 | Stryker Spine | System and method for spinal implant placement |
| US20080200918A1 (en) * | 2007-02-12 | 2008-08-21 | James Spitler | Pedicle screw driver |
| US8747411B2 (en) * | 2009-09-30 | 2014-06-10 | Michael David Mitchell | Fluid delivery and bone screw driver apparatus |
| CN202637097U (en) * | 2012-07-06 | 2013-01-02 | 常州市康辉医疗器械有限公司 | Minimally-invasive spine pedicle-screw holding sleeve |
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- 2012-07-06 CN CN201210233886.5A patent/CN103519876B/en active Active
- 2012-09-25 WO PCT/CN2012/081888 patent/WO2014005378A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201631368U (en) * | 2009-12-31 | 2010-11-17 | 上海微创骨科医疗科技有限公司 | Hidden reset pedicle screw with fractured surface |
| CN202270059U (en) * | 2011-08-23 | 2012-06-13 | 常州市康辉医疗器械有限公司 | One-way automatically distracting pedicle screw for correcting and fixing vertebral column |
| DE202011051211U1 (en) * | 2011-09-06 | 2011-12-01 | Aesculap Ag | Polyaxial pedicle screw with provisional fixation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103519876A (en) | 2014-01-22 |
| WO2014005378A1 (en) | 2014-01-09 |
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