CN105476704B - Anterior locking cervical plate system - Google Patents

Anterior locking cervical plate system Download PDF

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Publication number
CN105476704B
CN105476704B CN201510947530.1A CN201510947530A CN105476704B CN 105476704 B CN105476704 B CN 105476704B CN 201510947530 A CN201510947530 A CN 201510947530A CN 105476704 B CN105476704 B CN 105476704B
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China
Prior art keywords
screw
anterior
angle
piece
plate fixation
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CN201510947530.1A
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Chinese (zh)
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CN105476704A (en
Inventor
周建明
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浙江康慈医疗科技有限公司
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Publication of CN105476704A publication Critical patent/CN105476704A/en
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Publication of CN105476704B publication Critical patent/CN105476704B/en

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Abstract

The invention discloses a kind of anterior locking cervical plate systems to belong to the field of medical instrument technology for fixed form treatment before carrying out to cervical vertebra.The fixed system includes anterior plate fixation and screw, anterior plate fixation is equipped with the screw hole group of several columns arrangement parallel to each other, each column screw hole group is made of two adjacent screw holes, screw is mounted in screw hole, it is structurally characterized in that further include compressing piece, compressing piece is integrally in dual U-shaped, its two sides is equipped with opening, and the opening direction of both-side opening is opposite, the groove to match with compression piece is equipped between described two adjacent screw holes, it compresses piece to be mounted in groove, the opening for compressing piece two sides can be with the head of clamping screw.The present invention has the advantages that structure is simple and convenient to operate, is quickly fixed, safe and reliable.

Description

Anterior locking cervical plate system

Technical field

The present invention relates to a kind of anterior locking cervical plate systems to belong to for fixed form treatment before carrying out to cervical vertebra The field of medical instrument technology.

Background technique

It is de- to be easy to happen plant bone mass since On graft area lacks reliable stabilizing measures for the fusion of anterior cervical vertebrae simple bone graft Fall, bone grafting disunion or delayed union or pseudarthrosis are formed, the pseudarthrosis incidence of anterior cervical decompression bone grafting fusion is high, and more piece The pseudarthrosis incidence of the bone grafting fusion of section is higher, becomes the problem of puzzlement clinician.

The appearance of anterior plate fixation, only clinic does not provide good fixing means, provides for Cervical anterior fusion One stable support shortens plant bone mass time of fusion, improves fusion rate, can also prevent Delayed onset cervical kyphosis With holding cervical vertebrae height.The technology of fixed form treatment, is widely used to vertebra before being carried out using anterior plate fixation to cervical vertebra The clinical treatments such as disk lesion, wound, tumour, deformity, pseudarthrosis.Anterior plate fixation is fixed using screw, but is performed the operation After the completion, screw is easy to produce loosening and exits anterior plate fixation, causes operative failure even threat to life, brings to patient It seriously affecting, existing screw locking mode is to be screwed into other screws again after screw is fixed or locked again with modes such as snap rings, Operating procedure is not only increased, and locking is unreliable, there are security risks.

Summary of the invention

Technical problem to be solved by the invention is to provide a kind of structures to be simple and convenient to operate, quickly fixed, safe and reliable Anterior locking cervical plate system.

Technical solution used by the present invention solves the above problems is: the fixed system includes anterior plate fixation and spiral shell Nail, anterior plate fixation are equipped with the screw hole group of several columns arrangement parallel to each other, and each column screw hole group is by two adjacent spiral shells Nail hole composition, screw are mounted in screw hole, it is characterized in that: further including compressing piece, compressing piece is integrally in dual U-shaped, and two sides are set There is opening, and the opening direction of both-side opening between described two adjacent screw holes on the contrary, being equipped with and compressing what piece matched Groove compresses piece and is mounted in groove, and the opening for compressing piece two sides can be with the head of clamping screw.

Screw of the present invention is fixed angle screw or angle adjustable screw of the self tapping from brill.

The present invention is when screw is fixed angle screw, in the longitudinal surface of anterior plate fixation, the axis and screw of screw Angle between the vertical line of place plane is 7 ° or ﹣ 7 °;In the lateral face of anterior plate fixation, the axis of screw and screw institute Angle between the vertical line of plane is 8 ° or ﹣ 8 °.

The present invention is when screw is angle adjustable screw, in the longitudinal surface of anterior plate fixation, the axis and screw of screw Angle between the vertical line of place plane can adjust between 8 ° to 6 ° of ﹣, 2 ° to 10 ° of ﹣, 6 ° to 8 ° or 10 ° to 2 ° of ﹣ of ﹣;In neck The lateral face of vertebra anterior plate, the angle where the axis and screw of screw between the vertical line of plane can be at 0 ° to 8 ° or 8 ° of ﹣ It is adjusted between to 0 °.

The quantity of screw hole group of the present invention is two groups, three groups, four groups or five groups.

Anterior plate fixation of the present invention is equipped with window between adjacent screw hole group, and window is in rectangular Shape.

Anterior plate fixation of the present invention arrives 4mm with a thickness of 2.

Compared with the prior art, the present invention has the following beneficial effects: 1, the fixed system structure is simple, in anterior cervical vertebrae Steel plate is equipped with several columns screw hole group, and each column screw hole group is made of two screw holes, and self tapping self-drilling screw is mounted on screw hole Interior, fixed angle screw or angle adjustable screw can be used according to the different situations of patient in screw, and screw hole is eccentric orfice, makes every The angle between two screws in column screw hole group can be adjusted in a certain range, and the adjustable-angle of screw extensively makes screw Adaptability enhancing, provides conveniently for operation, and generates relative motion when screw placement between anterior plate fixation and can play pair The effect of plant bone mass pressurization can promote bone grafting to merge plant bone mass pressurization;2, after the fixed anterior plate fixation of screw, each screw it Between angle and cervical vertebrae physiological radian in a parabola change, meet " tension band " principle of interior fixation in this way, be more advantageous to plant The fusion of bone block;3, the fixed system includes that the compression piece in dual U-shaped compresses the opening of piece after screw screws in screw hole That is the head of clamping screw plays the role of compressing two screws, and the intrinsic stability of screw depends primarily on how it is pressed Tightly, good compression can highly desirable join anterior plate fixation and screw together, make the fatigue fracture at screw hole It effectively reduces, which compresses reliably, is unlikely to deform failure, clinical manipulation is very convenient;4, basis on anterior plate fixation The physiologic radian and length of each centrum are equipped with rectangular window, and anterior plate fixation is the physiological camber phase with cervical vertebra The problems such as load distribution is uneven, stress distribution is uneven can be effectively avoided in matched undercut mark pre-bending steel plate, while before cervical vertebra Road steel plate will generate pressing effect to bone grafting, and the width and thickness of steel plate need to be suitable for, wide, often need incision musculus longus colli, and mistake It is narrow, except fixed function cannot be played, it is also possible to plant bone mass is influenced, although the mechanical property of thicker steel plate is good, due to can With cause patient it is postoperative swallow sense of discomfort, so the thickness of steel plate should be on the basis of meeting mechanical requirements, as far as possible Thinner, the anterior plate fixation in the fixed system arrives 4mm with a thickness of 2.

Detailed description of the invention

Fig. 1 is the main view of embodiment 1.

Fig. 2 is the top view of embodiment 1.

Fig. 3 is the perspective view of embodiment 1.

Fig. 4 is the perspective view of anterior plate fixation in embodiment 1.

Fig. 5 is the perspective view that piece is compressed in embodiment 1.

Fig. 6 is the A-A cross-sectional view of Fig. 2.

Fig. 7 is the B-B cross-sectional view of Fig. 2.

Fig. 8 is the C-C cross-sectional view of Fig. 2.

Fig. 9 is schematic diagram when screw is located in anterior plate fixation in embodiment 1.

Figure 10 is enlarged drawing at the I of Fig. 9.

Figure 11 is schematic diagram when embodiment 1 is applied to neck.

Figure 12 is enlarged drawing at the II of Figure 11.

Figure 13 is the top view of embodiment 2.

Figure 14 is the D-D cross-sectional view of Figure 13.

Figure 15 is the E-E cross-sectional view of Figure 13.

Figure 16 is the F-F cross-sectional view of Figure 13.

Figure 17 is schematic diagram when screw is located in anterior plate fixation in embodiment 2.

Figure 18 is enlarged drawing at the III of Figure 17.

Figure 19 is the main view of embodiment 3.

Figure 20 is the top view of embodiment 3.

Figure 21 is the perspective view of embodiment 3.

Figure 22 is the perspective view of anterior plate fixation in embodiment 3.

Figure 23 is the perspective view that piece is compressed in embodiment 3.

Figure 24 is the G-G cross-sectional view of Figure 20.

Figure 25 is the H-H cross-sectional view of Figure 20.

Figure 26 is the I-I cross-sectional view of Figure 20.

Figure 27 is schematic diagram when embodiment 3 is applied to neck.

Figure 28 is enlarged drawing at the IV of Figure 27.

Figure 29 is the top view of embodiment 4.

Figure 30 is the J-J cross-sectional view of Figure 29.

Figure 31 is the K-K cross-sectional view of Figure 29.

Figure 32 is the L-L cross-sectional view of Figure 29.

Figure 33 is the main view of embodiment 5.

Figure 34 is the top view of embodiment 5.

Figure 35 is the perspective view of embodiment 5.

Figure 36 is the perspective view of anterior plate fixation in embodiment 5.

Figure 37 is the perspective view that piece is compressed in embodiment 5.

Figure 38 is the M-M cross-sectional view of Figure 34.

Figure 39 is the N-N cross-sectional view of Figure 34.

Figure 40 is the O-O cross-sectional view of Figure 34.

Figure 41 is schematic diagram when embodiment 5 is applied to neck.

Figure 42 is enlarged drawing at the V of Figure 41.

Figure 43 is the top view of embodiment 6.

Figure 44 is the P-P cross-sectional view of Figure 43.

Figure 45 is the Q-Q cross-sectional view of Figure 43.

Figure 46 is the R-R cross-sectional view of Figure 43.

Figure 47 is the main view of embodiment 7.

Figure 48 is the top view of embodiment 7.

Figure 49 is the perspective view of embodiment 7.

Figure 50 is the perspective view of anterior plate fixation in embodiment 7.

Figure 51 is the perspective view that piece is compressed in embodiment 7.

Figure 52 is the S-S cross-sectional view of Figure 48.

Figure 53 is the T-T cross-sectional view of Figure 48.

Figure 54 is the U-U cross-sectional view of Figure 48.

Figure 55 is schematic diagram when embodiment 7 is applied to neck.

Figure 56 is enlarged drawing at the VI of Figure 55.

Figure 57 is the top view of embodiment 8.

Figure 58 is the J-J cross-sectional view of Figure 57.

Figure 59 is the K-K cross-sectional view of Figure 57.

Figure 60 is the L-L cross-sectional view of Figure 57.

Specific embodiment

Embodiment 1:

Referring to Fig. 1-Fig. 5, the present embodiment includes anterior plate fixation 1, screw 2 and compression piece 4.Anterior plate fixation 1 With a thickness of 2mm, the screw hole group of two column arrangement parallel to each other which is provided with, each column screw hole group is by two adjacent screw holes 3 Composition, screw 2 are mounted in screw hole 3;Anterior plate fixation 1 is equipped with window 7, window between adjacent screw hole group 7 are rectangle.It is in dual U-shaped that it is whole, which to compress piece 4, and two sides are equipped with opening 6, and the opening direction of both-side opening 6 is on the contrary, each column spiral shell The groove 5 to match with compression 4 shape size of piece is equipped in nail hole group between two adjacent screw holes 3, piece 4 is compressed and is mounted on In groove 5, the opening 6 for compressing 4 two sides of piece can be with the ailhead 21 of clamping screw 2.

Referring to Fig. 6-Figure 10, screw 2 is fixed angle screw, and the interconnecting piece 23 between ailhead 21 and rivet nut 22 is cylinder Design, after screw 2 is put into screw hole 3, interconnecting piece 23 and the inner wall of screw hole 3 fit, axis and the screw hole 3 of screw 2 On the same line, screw 2 can not adjust the angle axis again.In the longitudinal surface of anterior plate fixation 1, the axis alpha of screw 2 with should Angle where longitudinal surface between the vertical line β of plane (i.e. A-A section in Fig. 2 and the plane where B-B section) is 7 ° or ﹣ 7 ° (rotate clockwise and be negative, rotation is positive counterclockwise, similarly hereinafter);In the lateral face of anterior plate fixation 1, the axis alpha of screw 2 with Angle where the transverse direction face between the vertical line γ (i.e. the plane where C-C section in Fig. 2) of plane is 8 ° or ﹣ 8 °.

Referring to Figure 11 and Figure 12, in use, screw 2 is screwed into cervical vertebra out of anterior plate fixation 1 screw hole 3, by cervical vertebra Anterior plate 1 is fixed on cervical vertebra, and when the head of screw 2 enters in the opening 6 for compressing piece 4, the opening 6 for compressing piece 4 is blocked The ailhead 21 of tight screw 2, screw 2 is fixed, prevent it from loosening, falling off.

Embodiment 2:

Referring to Figure 13-Figure 18, screw 2 is angle adjustable screw, the connection between ailhead 21 and rivet nut 22 in the present embodiment Portion 23 is that the cambered surface of indent designs, and after screw 2 is put into screw hole 3, is not pasted between rivet nut interconnecting piece 23 and the inner wall of screw hole 3 Splice grafting touching, screw 2 can adjust the angle within the scope of certain angle.In the longitudinal surface of anterior plate fixation 1, the axis alpha of screw 2 It can with the angle where the longitudinal surface between the vertical line β of plane (i.e. D-D section in Figure 13 and the plane where E-E section) To be adjusted between -8 ° to 6 ° or 6 ° to 8 ° of ﹣;In the lateral face of anterior plate fixation 1, the axis alpha of screw 2 and the transverse direction face institute Angle between the vertical line γ (i.e. the plane where F-F section in Figure 13) of plane can be at 0 ° to 8 ° or 8 ° to 0 ° of ﹣ Between adjust.

Remaining structure and application method of the present embodiment are same as Example 1.

Embodiment 3:

Referring to Figure 19-Figure 23, the present embodiment includes anterior plate fixation 1, screw 2 and compression piece 4.Anterior plate fixation 1 With a thickness of 3mm, which is provided with the screw hole group of three column arrangement parallel to each other, each column screw hole group is by two adjacent screw holes 3 compositions, screw 2 are mounted in screw hole 3;Anterior plate fixation 1 is equipped with window 7, perspective between adjacent screw hole group Window 7 is rectangle.It is in dual U-shaped that it is whole, which to compress piece 4, and two sides are equipped with opening 6, and the opening direction of both-side opening 6 is on the contrary, each column The groove 5 to match with compression 4 shape size of piece is equipped in screw hole group between two adjacent screw holes 3, piece 4 is compressed and installs In groove 5, the opening 6 for compressing 4 two sides of piece can be with the ailhead 21 of clamping screw 2.

4- Figure 26 referring to fig. 2, screw 2 are fixed angle screw same as Example 1, the axis and screw hole 3 of screw 2 Axis on the same line, screw 2 can not adjust the angle again in screw hole 3.In the longitudinal surface of anterior plate fixation 1, spiral shell Nail 2 axis alpha and the longitudinal surface where plane (i.e. the plane where G-G section and H-H section in Figure 20) vertical line β it Between angle be 7 ° or ﹣ 7 °;In the lateral face of anterior plate fixation 1, plane where the axis alpha of screw 2 and the transverse direction face is hung down Angle between straight line γ (i.e. the plane where I-I section in Figure 20) is 8 ° or ﹣ 8 °.

The application method of 7 and Figure 28 referring to fig. 2, the present embodiment are same as Example 1.

Embodiment 4:

9- Figure 32 referring to fig. 2, the screw 2 in the present embodiment is angle adjustable screw same as Example 2, and screw 2 exists It can be adjusted the angle within the scope of certain angle in screw hole 3.In the longitudinal surface of anterior plate fixation 1, the axis alpha of screw 2 with Angle where the longitudinal surface between the vertical line β of plane (i.e. J-J section in Figure 29 and the plane where K-K section) can It is adjusted between 8 ° to 6 ° of ﹣, 2 ° to 10 ° of ﹣, 6 ° to 8 ° or 10 ° to 2 ° of ﹣ of ﹣;In the lateral face of anterior plate fixation 1, screw 2 Angle where axis alpha and the transverse direction face between the vertical line γ (i.e. the plane where L-L section in Figure 29) of plane can be It is adjusted between 0 ° to 8 ° or 8 ° to 0 ° of ﹣.

Remaining structure and application method of the present embodiment are same as Example 3.

Embodiment 5:

Referring to Figure 33-Figure 37, the present embodiment includes anterior plate fixation 1, screw 2 and compression piece 4.Anterior plate fixation 1 With a thickness of 4mm, which is provided with the screw hole group of four column arrangement parallel to each other, each column screw hole group is by two adjacent screw holes 3 compositions, screw 2 are mounted in screw hole 3;Anterior plate fixation 1 is equipped with window 7, perspective between adjacent screw hole group Window 7 is rectangle.It is in dual U-shaped that it is whole, which to compress piece 4, and two sides are equipped with opening 6, and the opening direction of both-side opening 6 is on the contrary, each column The groove 5 to match with compression 4 shape size of piece is equipped in screw hole group between two adjacent screw holes 3, piece 4 is compressed and installs In groove 5, the opening 6 for compressing 4 two sides of piece can be with the ailhead 21 of clamping screw 2.

Referring to Figure 38-Figure 40, screw 2 is fixed angle screw same as Example 1, the axis and screw hole 3 of screw 2 Axis on the same line, screw 2 can not adjust the angle again in screw hole 3.In the longitudinal surface of anterior plate fixation 1, spiral shell Nail 2 axis alpha and the longitudinal surface where plane (i.e. the plane where M-M section and N-N section in Figure 34) vertical line β it Between angle be 7 ° of ﹢ or 7 ° of ﹣;In the lateral face of anterior plate fixation 1, plane where the axis alpha of screw 2 and the transverse direction face is hung down Angle between straight line γ (i.e. the plane where O-O section in Figure 34) is 8 ° of ﹢ or 8 ° of ﹣.

The application method of 1 and Figure 42 referring to fig. 4, the present embodiment are same as Example 1.

Embodiment 6:

3- Figure 46 referring to fig. 4, the screw 2 in the present embodiment is angle adjustable screw same as Example 2, and screw 2 exists It can be adjusted the angle within the scope of certain angle in screw hole 3.In the longitudinal surface of anterior plate fixation 1, the axis alpha of screw 2 with Angle where the longitudinal surface between the vertical line β of plane (i.e. P-P section in Figure 43 and the plane where Q-Q section) can It is adjusted between 8 ° to 6 ° of ﹣, 2 ° to 10 ° of ﹣, 6 ° to 8 ° or 10 ° to 2 ° of ﹣ of ﹣;In the lateral face of anterior plate fixation 1, screw 2 Angle where axis alpha and the transverse direction face between the vertical line γ (i.e. the plane where R-R section in Figure 43) of plane can be in ﹢ It is adjusted between 8 ° to 0 ° or 8 ° to 0 ° of ﹣.

Remaining structure and application method of the present embodiment are same as Example 5.

Embodiment 7:

7- Figure 51 referring to fig. 4, the present embodiment include anterior plate fixation 1, screw 2 and compression piece 4.Anterior plate fixation 1 With a thickness of 3mm, which is provided with the screw hole group of five column arrangement parallel to each other, each column screw hole group is by two adjacent screw holes 3 compositions, screw 2 are mounted in screw hole 3;Anterior plate fixation 1 is equipped with window 7, perspective between adjacent screw hole group Window 7 is rectangle.It is in X-shaped that it is whole, which to compress piece 4, and two sides are equipped with opening 6, and the opening direction of both-side opening 6 is on the contrary, each column spiral shell The groove 5 to match with compression 4 shape size of piece is equipped in nail hole group between two adjacent screw holes 3, piece 4 is compressed and is mounted on In groove 5, the opening 6 for compressing 4 two sides of piece can be with the ailhead 21 of clamping screw 2.

Referring to Figure 52-Figure 54, screw 2 is fixed angle screw same as Example 1, the axis and screw hole 3 of screw 2 Axis on the same line, screw 2 can not adjust the angle again in screw hole 3.In the longitudinal surface of anterior plate fixation 1, spiral shell Nail 2 axis alpha and the longitudinal surface where plane (i.e. the plane where S-S section and T-T section in Figure 48) vertical line β it Between angle be 7 ° of ﹢ or 7 ° of ﹣;In the lateral face of anterior plate fixation 1, plane where the axis alpha of screw 2 and the transverse direction face is hung down Angle between straight line γ (i.e. the plane where U-U section in Figure 48) is 8 ° of ﹢ or 8 ° of ﹣.

Referring to Figure 55 and Figure 56, the application method of the present embodiment is same as Example 1.

Embodiment 8:

Referring to Figure 57-Figure 60, the screw 2 in the present embodiment is angle adjustable screw same as Example 2, and screw 2 exists It can be adjusted the angle within the scope of certain angle in screw hole 3.In the longitudinal surface of anterior plate fixation 1, the axis alpha of screw 2 with Angle where the longitudinal surface between the vertical line β of plane (i.e. V-V section in Figure 57 and the plane where W-W section) can It is adjusted between 8 ° to 6 ° of ﹣, 2 ° to 10 ° of ﹣, 6 ° to 8 ° or 10 ° to 2 ° of ﹣ of ﹣;In the lateral face of anterior plate fixation 1, screw 2 Angle where axis alpha and the transverse direction face between the vertical line γ (i.e. the plane where X-X section in Figure 57) of plane can be in ﹢ It is adjusted between 8 ° to 0 ° or 8 ° to 0 ° of ﹣.

Remaining structure and application method of the present embodiment are same as Example 7.

Claims (7)

1. a kind of anterior locking cervical plate system, including anterior plate fixation and screw, anterior plate fixation is equipped with several The screw hole group of arrangement parallel to each other is arranged, each column screw hole group is made of two adjacent screw holes, and screw is mounted on screw hole Interior, it is characterized in that: further including compressing piece, compressing piece is integrally in dual U-shaped, and two sides are equipped with opening, and the opening side of both-side opening To on the contrary, being equipped with the groove to match with compression piece between described two adjacent screw holes, compression piece is mounted in groove, presses The head of the opening clamping screw of tight piece two sides.
2. anterior locking cervical plate system according to claim 1, it is characterized in that: the screw is that self tapping is consolidated from what is bored Determine angle screw or angle adjustable screw.
3. anterior locking cervical plate system according to claim 1 or 2, it is characterized in that: when screw is fixed angle spiral shell It is 7 ° or ﹣ in the angle where the longitudinal surface of anterior plate fixation, the axis and screw of screw between the vertical line of plane when nail 7°;In the lateral face of anterior plate fixation, the angle where the axis and screw of screw between the vertical line of plane is 8 ° or ﹣ 8°。
4. anterior locking cervical plate system according to claim 1 or 2, it is characterized in that: when screw is angle adjustable spiral shell When nail, the angle between the longitudinal surface of anterior plate fixation, the vertical line of axis and screw the place plane of screw can be in ﹣ 8 ° to 6 °, 2 ° to 10 ° of ﹣, adjust between 6 ° to 8 ° or 10 ° to 2 ° of ﹣ of ﹣;In the lateral face of anterior plate fixation, the axis of screw with Angle where screw between the vertical line of plane can adjust between 0 ° to 8 ° or 8 ° to 0 ° of ﹣.
5. anterior locking cervical plate system according to claim 1, it is characterized in that: the quantity of the screw hole group is two Group, three groups, four groups or five groups.
6. anterior locking cervical plate system according to claim 1 or 5, it is characterized in that: the anterior plate fixation Window is equipped between adjacent screw hole group, window is rectangle.
7. anterior locking cervical plate system according to claim 1, it is characterized in that: the thickness of the anterior plate fixation 4mm is arrived for 2.
CN201510947530.1A 2015-12-17 2015-12-17 Anterior locking cervical plate system CN105476704B (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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CN105476704B true CN105476704B (en) 2019-01-25

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