CN113499106B - Elastic spine spinous process opening device - Google Patents
Elastic spine spinous process opening device Download PDFInfo
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- CN113499106B CN113499106B CN202110791503.5A CN202110791503A CN113499106B CN 113499106 B CN113499106 B CN 113499106B CN 202110791503 A CN202110791503 A CN 202110791503A CN 113499106 B CN113499106 B CN 113499106B
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000008569 process Effects 0.000 title claims abstract description 43
- 125000006850 spacer group Chemical group 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 16
- 241000425571 Trepanes Species 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000005036 nerve Anatomy 0.000 description 2
- 206010003694 Atrophy Diseases 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- 208000020307 Spinal disease Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000037444 atrophy Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001537 neural effect Effects 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 210000000278 spinal cord Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/02—Surgical instruments, devices or methods for holding wounds open, e.g. retractors; Tractors
- A61B17/025—Joint distractors
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/02—Surgical instruments, devices or methods for holding wounds open, e.g. retractors; Tractors
- A61B17/025—Joint distractors
- A61B2017/0256—Joint distractors for the spine
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Abstract
The invention relates to the field of medical instruments, and provides an elastic spine spinous process distraction device, which comprises: the locking device comprises a first clamping piece, a second clamping piece and a first locking component; the clamping surfaces of the first clamping piece and the second clamping piece are arranged in parallel, and the spinous process of the vertebra is clamped between the first clamping piece and the second clamping piece; the first locking assembly comprises a first locking column and a first locking sleeve; a first locking column is fixed at the center of one side of the first clamping piece facing the second clamping piece; a first locking sleeve is fixed at a measuring center of the second clamping piece far away from the first clamping piece; the first locking column is inserted into the first locking sleeve from one side of the second clamping piece facing the first clamping piece; the first clamping piece and the second clamping piece are respectively arranged on two sides of the spinous process of the spine, the first clamping piece is operated to gradually approach towards the second clamping piece, the first locking column is pushed into the first locking sleeve, and the first clamping piece and the second clamping piece can be fixed after being pushed tightly by force; therefore, the fixing device has the technical advantages of simple operation and good fixing effect.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to an elastic spine spinous process distraction device.
Background
A significant proportion of the conventional spinal disorders are caused by pathological atrophy of intervertebral discs, so that the intervertebral space between vertebras is reduced, and the nerve foramen between intervertebral joints (i.e. intervertebral foramen) is also relatively reduced, so that the nerve roots of spinal cords are pressed to cause paralysis or pain to patients. The existing treatment methods for the problems mainly comprise the steps of implanting pedicle screws to pull out an intervertebral space or implanting artificial intervertebral disc fillers to fill the intervertebral space, so that the intervertebral space of the spine is heightened and the neural foramen space is pulled out. Patent document No. 201820989961.3, which discloses an elastic spinous process distraction device, including a first distraction element and a second distraction element, the first distraction element and the second distraction element having an overlapping portion, an elastic element is arranged in a cavity of the overlapping portion, two U-shaped legs of the first distraction element are respectively hinged with a rigid guide plate, and the other end of the guide plate opposite to the hinged end is provided with a guide rod; the outer side surfaces of the two U-shaped supporting legs of the second distraction element are provided with guide grooves; the guide rod can slide in the guide groove. The elastic spine spinous process distraction device has good flexibility. Meanwhile, the spinous process of the spine abuts against the elastic bandage, the elastic bandage can effectively buffer the action of the spinous process of the spine, can prevent the spinous process of the spine from being abraded, and effectively protects the spinous process of the spine. However, the two clamping pieces of the elastic spinal spinous process distraction device have poor fixing and mounting effects, so that the two clamping pieces are easy to separate in use, and the treatment effect is difficult to achieve.
Therefore, it is necessary to develop an elastic spinous process distraction device to solve at least one of the above technical problems.
Disclosure of Invention
The invention aims to provide an elastic spine spinous process distraction device with good installation and fixation effects.
The above object of the present invention can be achieved by the following technical solutions:
the invention provides an elastic spine spinous process distraction device, which comprises: the locking device comprises a first clamping piece, a second clamping piece and a first locking component; the clamping surfaces of the first clamping piece and the second clamping piece are arranged in parallel; the first clamping piece and the second clamping piece clamp the spinous process of the spine; the first locking assembly comprises a first locking column and a first locking sleeve; a first locking column is fixed at the center of one side of the first clamping piece facing the second clamping piece; a first locking sleeve is fixed at the center of one side of the second clamping piece, which is far away from the first clamping piece; the first locking column is inserted with the first locking sleeve along the direction of the second clamping piece towards one side of the first clamping piece.
The second clamping piece is arranged on one side of the spinous process of the spine, the first clamping piece is arranged on the other side of the spinous process of the spine, the first clamping piece is pushed close to the second clamping piece, the first locking column is pushed into the first locking sleeve, and the first clamping piece and the second clamping piece are fixed through the forced pushing.
Preferably, the first locking post comprises a first post body and a second post body; the first column body is fixed at the center of one side of the first clamping piece facing the second clamping piece; the outer end of the first column body and the second column body are integrally formed; the second column body is a wedge-shaped column, and an included angle between the outer wall of the second column body and the center line of the second column body ranges from 175 degrees to 178 degrees.
The second cylinder body is a wedge-shaped cylinder which is conveniently inserted into the first locking sleeve.
Preferably, the first locking sleeve comprises a sleeve body, a first sleeve hole and a second sleeve hole; a sleeve body is fixed on one side of the second clamping piece, which is far away from the first clamping piece; a first sleeve hole which is in clearance fit with the first column body is formed in the sleeve body along the center of one side, facing the first clamping piece, of the second clamping piece; the tail end of the first sleeve hole is also provided with a second sleeve hole arranged in the sleeve body; one end, far away from the inner wall of the first clamping piece, of the second sleeve hole inclines towards the hole center.
The second trepanning all inclines with second barrel lateral wall, makes things convenient for both to closely laminate, improves fixed effect.
Preferably, the included angle between the inner wall of the second trepan boring and the center line of the second trepan boring is smaller than the included angle between the outer wall of the second column body and the center line of the second column body by 0-1 degrees.
The clamping force of the second column body in the matching process with the second sleeve hole is improved, and then the fixing effect of the first clamping piece and the second clamping piece is enhanced.
Preferably, the corner of the tail end of the second trepan is adhered with a cushion block with elasticity.
Insert in the second trepanning at the second shaft, the terminal of second shaft supports the terminal of second trepanning to the extrusion cushion improves the clamp force that second shaft and second trepanning combined.
Preferably, a third locking assembly is inserted into the first locking column along the center of the plate surface of the first clamping piece; the third locking assembly comprises a second locking column and a second locking sleeve; a second locking sleeve is arranged in the first locking column; a second locking column which expands the outer wall of the first locking column outwards is inserted into the second locking sleeve along one side of the first clamping piece, which is far away from the second clamping piece.
The second locking post inserts in the second locking cover for first locking post outer wall expands outwards, and then makes first locking post outer wall tightly support the inner wall of first locking cover, guarantees that first locking post does not drop from in the first locking cover, improves the installation fixed effect of first clamping piece and second clamping piece.
Preferably, the second locking column comprises a column cap, an external thread and a third column body; a column cap with a circular surface radius larger than that of the third column body is fixed at one end of the third column body; an external thread is arranged outside a section of the third column body close to the column cap; the radial length of the external thread is two thirds of the length of the third column body; the second locking sleeve comprises a through hole, an internal thread hole and a wedge-shaped hole; the center of the plate surface of the first clamping piece penetrates through a through hole with the aperture slightly larger than the radius of the circular surface of the third cylinder; an internal thread hole which is connected with the external thread in a thread fit manner is formed in the first column body towards the direction of the second clamping piece; one end of the internal thread hole facing the second clamping piece is connected with a wedge-shaped hole formed in the second column body; the tail end of the wedge-shaped hole is closer to the hole center of the wedge-shaped hole than the initial end.
Through rotatory cap, it passes the through-hole to drive third shaft, then make the external screw thread and the internal thread hole screw-thread fit that third shaft set up outward, make one section crowded wedge hole that does not contain the external screw thread at third shaft end, make the wedge hole inflation, and then make the second shaft that the wedge hole located expand outwards, and the inner wall that supports second cover hole tightly, improve first locking post and first locking cover zonulae occludens, accomplish the fixed of first clamping piece and second clamping piece, otherwise, take out second locking post from second locking cover, can make things convenient for the dismantlement of first locking post and first locking cover, whole dismouting is convenient and fixed effectual.
Preferably, an integrally formed gasket is fixed on the side surface of the second clamping piece; the plate surface of the gasket is arranged outside the first locking sleeve and is parallel to the plate surface of the first locking sleeve; the center of the gasket is screwed with a pressure bolt; the tail end of the pressure bolt is abutted against the outer wall of the first locking sleeve.
After the first clamping piece and the second clamping piece are fixed, the pressure bolt penetrates through the center of the gasket, and the tail end of the pressure bolt applies pressure to the outer wall of the first locking sleeve, so that the first locking sleeve is firmly attached to the first locking column inside the first locking sleeve, the fixing effect is improved, and the first clamping piece and the second clamping piece are prevented from falling off.
Preferably, the outer wall of the first locking sleeve is provided with anti-skid grains. Is convenient for protection.
Preferably, a positioning component is arranged between the first clamping piece and the second clamping piece; the positioning assembly comprises a first positioning pin and a second positioning pin; the upper end and the lower end of one side of the first clamping piece facing the second clamping piece are respectively fixed with a first positioning thorn; and the upper end and the lower end of one side of the second clamping piece facing the first clamping piece are respectively fixed with a second positioning thorn which is matched with the first positioning thorn to play a positioning role.
The first positioning spine and the second positioning spine are positioned on the surface of the spinous process of the spine, so that the positioning accuracy of the elastic spinous process distraction device is improved.
The invention has the characteristics and advantages that:
A. by arranging the first locking column and the first locking sleeve, the first clamping piece and the second clamping piece are convenient to mount, and the fixing effect of the first clamping piece and the second clamping piece is improved;
B. the second sleeve hole and the side wall of the second cylinder body are obliquely arranged, so that the second cylinder body can conveniently enter the first sleeve hole, and the inclination degree of the side wall of the second sleeve hole is slightly larger than that of the side wall of the second cylinder body, so that the second sleeve hole and the second cylinder body are tightly attached to each other, and the fixing effect is improved; the cushion block is arranged, so that the clamping force of the combination of the second column body and the second sleeve hole is further improved; the second locking column is inserted into the second locking sleeve to expand the outer wall of the first locking column outwards, so that the outer wall of the first locking column is tightly attached to the inner wall of the first locking sleeve, and the mounting and fixing effects of the first clamping piece and the second clamping piece are improved; the arranged external thread is matched with the internal thread hole, so that the second locking column is prevented from being separated from the second locking sleeve; the pressure bolt is arranged to apply pressure to the outer wall of the first locking sleeve, so that the first locking sleeve is firmly attached to the first locking column in the first locking sleeve, the fixing effect is improved, and the first clamping piece and the second clamping piece are prevented from falling off; the outer wall of the first locking sleeve is provided with anti-skid lines, so that the protection is facilitated; the first positioning spine and the second positioning spine are positioned on the surface of the spinous process of the spine, so that the positioning accuracy of the elastic spinous process distraction device is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a front view structural view of an elastic spinous process distraction device according to an embodiment of the invention;
fig. 2 is an exploded view of the elastic spinous process distraction device according to an embodiment of the invention;
FIG. 3 is an enlarged view of area A of FIG. 2 according to the present invention;
fig. 4 is a front view structural view of the elastic spinous process distraction device according to the second embodiment of the invention;
FIG. 5 is an exploded view of the assembly mounted on the second clip of the second embodiment of the present invention;
fig. 6 is a front view structural view of the elastic spinous process distraction device according to the third embodiment of the invention.
The reference numbers illustrate:
1a, a first clamping piece; 1b, a second clamping piece; 2. a first locking assembly; 21. a first locking post; 211. a first column body; 212. a second cylinder body; 22. a first locking collar; 221. sleeving a body; 222. a first trepan boring; 223. a second trepan boring; 224. cushion blocks; 3. a second locking assembly; 31. a gasket; 32. a pressure bolt; 4. a positioning assembly; 41. a first positioning thorn; 42. a second positioning pin; 5. anti-skid lines; 6. a third locking assembly; 61. a second locking post; 611. a cap; 612. an external thread; 613. a third shaft; 62. a second locking sleeve; 621. a through hole; 622. an internally threaded bore; 623. a wedge-shaped hole.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The first embodiment is as follows:
as shown in fig. 1, the present invention provides an elastic spinous process distraction device, which includes a first clamping piece 1a, a second clamping piece 1b, a first locking component 2 and a positioning component 4. The clamping surfaces of the first clamping piece 1a and the second clamping piece 1b are arranged in parallel, and the spinous process of the spine is clamped between the first clamping piece 1a and the second clamping piece 1 b. As shown in fig. 2, the first locking assembly 2 includes a first locking post 21 and a first locking sleeve 22.
Preferably, in one preferred embodiment of the present invention, the first locking column 21 includes a first column shaft 211 and a second column shaft 212. The first shaft 211 is welded to the center of the first clip piece 1a on the side facing the second clip piece 1 b. The outer end of the first shaft 211 and the second shaft 212 are integrally formed. The second column 212 is a wedge-shaped column, and an included angle between the outer wall of the second column 212 and the center line of the second column 212 is 175-178 degrees.
Preferably, in one preferred embodiment of the present invention, the first locking sleeve 22 includes a sleeve body 221, a first sleeve hole 222 and a second sleeve hole 223. The sleeve body 221 is welded on one side of the second clamping piece 1b, which is far away from the first clamping piece 1 a. A first sleeve hole 222 which is in clearance fit with the first column body 211 is formed in the sleeve body 221 along the center of one side of the second clip piece 1b facing the first clip piece 1 a. The end of the first sleeve hole 222 is further provided with a second sleeve hole 223 opened in the sleeve body 221. One end, far away from the first clamping piece 1a, of the inner wall of the second sleeve hole 223 inclines towards the hole center, and an included angle formed between the inner wall of the second sleeve hole 223 and the hole center line of the second cylinder 212 is smaller than an included angle formed between the outer wall of the second cylinder 212 and the center line of the second cylinder 212 by 0-1 degree.
Preferably, as shown in fig. 3, in one preferred embodiment of the present invention, the cushion block 224 having elasticity is adhered to the corner of the end of the second sleeve hole 223.
The second shaft 212 is inserted into the second sleeve 223, and the end of the second shaft 212 abuts against the end of the second sleeve 223 and presses the pad 224, so that the clamping force of the combination of the second shaft 212 and the second sleeve 223 can be improved.
Preferably, as shown in fig. 2, in one preferred embodiment of the present invention, the first positioning barbs 41 are welded on both upper and lower ends of one side of the first clamping piece 1a facing the second clamping piece 1 b. The upper end and the lower end of one side of the second clamping piece 1b facing the first clamping piece 1a are welded with second positioning thorns 42 which are matched with the first positioning thorns 41 to play a positioning role.
The first positioning spine 41 and the second positioning spine 42 are positioned on the surface of the spinous process of the spine, so that the positioning accuracy of the elastic spinous process distraction device is improved.
The working principle is as follows: the second clamping piece 1b is placed on one side of the spinous process of the spine, then the first clamping piece 1a is placed on the other side of the spinous process of the spine, the first clamping piece 1a is pushed towards the second clamping piece 1b, the first locking column 21 is pushed into the first locking sleeve 22 and pushed tightly by force, after the second column body 212 is combined with the second sleeve hole 223, because the included angle between the inner wall of the second sleeve hole 223 and the hole center line of the second sleeve hole 223 is smaller than the included angle between the outer wall of the second column body 212 and the center line of the second column body 212 by 0-1 degree, the first locking column 21 is pushed into the first locking sleeve 22 to be tightly combined, the fixing effect of the first clamping piece 1a and the second clamping piece 1b is improved, and meanwhile, the first positioning barbs 41 and the second positioning barbs 42 are positioned on the surface of the spinous process of the spine, and the clamping effect is improved.
Example two:
as shown in fig. 4, in this embodiment, on the basis of embodiment 1, a third locking assembly 6 is inserted into the first locking column 21 along the center of the plate surface of the first clamping piece 1 a. The third locking assembly 6 includes a second locking column 61 and a second locking sleeve 62.
Preferably, as shown in fig. 5, in one preferred embodiment of the present invention, the second locking post 61 includes a cap 611, an external thread 612, and a third shaft 613. A column cap 611 with a radius larger than that of the third column body 613 is welded at one end of the third column body 613. An external thread 612 is arranged outside a section of the third shaft 613, which is close to the cap. The radial length of the external thread 612 is two thirds of the length of the third shaft 613.
Preferably, in one preferred embodiment of the present invention, the second locking sleeve 62 includes a through hole 621, an internal threaded hole 622, and a wedge hole 623. The center of the plate surface of the first clamping piece 1a penetrates through a through hole 621 with an aperture slightly larger than the radius of the circular surface of the third barrel 613. An internal thread hole 622 is formed in the first column body 211 towards the second clamping piece 1b and is connected with the external thread 612 in a threaded fit manner. One end of the internal thread hole 622 facing the second jaw 1b is connected with a wedge hole 623 formed in the second column 212. The end of wedge-shaped hole 623 is closer to the center of wedge-shaped hole 623 than the initial end.
In the above scheme of this embodiment, the third column 613 is driven to pass through the through hole 621 by rotating the column cap 611, and then the external thread 612 arranged outside the third column 613 is in thread fit with the internal thread hole 622, and a section of the third column 613 not containing the external thread 612 is extruded into the wedge-shaped hole 623, so that the wedge-shaped hole 623 expands, and then the second column 212 where the wedge-shaped hole 623 is located expands outwards and tightly supports against the inner wall of the second sleeve hole 223, thereby improving the tight combination of the first locking column 21 and the first locking sleeve 22, and completing the fixation of the first clamping piece 1a and the second clamping piece 1b, otherwise, the second locking column 61 is taken out from the second locking sleeve 62, which can facilitate the detachment of the first locking column 21 and the first locking sleeve 22, and is convenient to disassemble and has good fixation effect.
Example three:
as shown in fig. 6, in the present embodiment, in addition to the above embodiments, an integrally formed pad 31 is fixed to a side surface of the second clip 1 b. The plate surface of the gasket 31 is arranged outside the first locking sleeve 22 and is parallel to the plate surface of the first locking sleeve 22. The center of the gasket 31 is screwed with a pressure bolt 32. The end of the pressure bolt 32 rests against the outer wall of the first locking sleeve 22.
Preferably, in one preferred technical solution of the present invention, the outer wall of the first locking sleeve 22 is provided with anti-slip threads 5. Is convenient for protection.
In this embodiment, after the first clip piece 1a and the second clip piece 1b are fixed, the pressure bolt 32 penetrates through the center of the gasket 31, and the end of the pressure bolt 32 applies pressure to the outer wall of the first locking sleeve 22, so that the first locking sleeve 22 and the first locking column 21 inside the first locking sleeve are firmly attached together, the fixing effect is improved, and the first clip piece 1a and the second clip piece 1b are prevented from falling off.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. An elastic spinal process distraction device, comprising: the clamping device comprises a first clamping piece, a second clamping piece and a first locking assembly, wherein the clamping surfaces of the first clamping piece and the second clamping piece are arranged in parallel, and the spinous process of the spine is clamped between the first clamping piece and the second clamping piece; the first locking assembly comprises a first locking column and a first locking sleeve, the first locking column is fixed at the center of one side of the first clamping piece, which faces the second clamping piece, the first locking sleeve is fixed at the center of one side of the second clamping piece, which is far away from the first clamping piece, and the first locking column is spliced with the first locking sleeve along the direction of the second clamping piece, which faces one side of the first clamping piece;
the first locking column comprises a first column body and a second column body; first locking cover is including cover body, first trepanning and second trepanning, one side that the second clamping piece deviates from first clamping piece is fixed with the cover body, along one side center department court of second clamping piece towards first clamping piece seted up in the cover body with first shaft clearance fit's first trepanning, the end of first trepanning still is provided with the second trepanning of seting up in the cover body, the slope is located to the hole center to the inner wall one end that first clamping piece was kept away from in the second trepanning, the inner wall of second trepanning is less than with the contained angle of second cover hole center line the outer wall of second shaft and the contained angle of second shaft central line between 0 ~ 1 degree, the adhesion of the terminal angle department of second trepanning has elastic cushion.
2. The elastic spinous process distraction device of claim 1, wherein the first shaft is fixed at a center of a side of the first clip facing the second clip, an outer end of the first shaft is integrally formed with the second shaft, the second shaft is a wedge-shaped column, and an included angle between an outer wall of the second shaft and a center line of the second shaft is 175-178 degrees.
3. The elastic spinous process distraction device of claim 2, wherein a third locking assembly is inserted into the first locking column along the center of the plate surface of the first clamping piece, the third locking assembly comprises a second locking column and a second locking sleeve, the second locking sleeve is installed in the first locking column, and a second locking column which expands the outer wall of the first locking column outwards is inserted into the second locking sleeve along one side of the first clamping piece away from the second clamping piece.
4. The elastic spinous process distraction device of claim 3, wherein the second locking post comprises a cap, an external thread, and a third shaft; a column cap with a circular surface radius larger than that of the third column body is fixed at one end of the third column body, an external thread is arranged outside a section of the third column body close to the column cap, and the radial length of the external thread is two thirds of the length of the third column body; the second locking sleeve comprises a through hole, an internal thread hole and a wedge-shaped hole, the center of the plate surface of the first clamping piece penetrates through the through hole, the diameter of the through hole is slightly larger than the radius of the circular surface of the third column body, the first column body is internally provided with the internal thread hole which is in threaded fit connection with the external thread in the direction towards the second clamping piece, and one end, facing the second clamping piece, of the internal thread hole is connected with the wedge-shaped hole formed in the second column body; the tail end of the wedge-shaped hole is closer to the hole center of the wedge-shaped hole than the initial end.
5. The elastic spinous process distraction device of spine according to claim 1, wherein an integrally formed spacer is fixed to a side surface of the second clip, a plate surface of the spacer is arranged outside the first locking sleeve and parallel to the plate surface of the first locking sleeve, a pressure bolt is screwed to a center of the spacer, and a tip of the pressure bolt abuts against an outer wall of the first locking sleeve.
6. The elastic spinous process distraction device of claim 5, wherein the outer wall of the first locking sleeve is provided with anti-slip threads.
7. The elastic spinous process distraction device of claim 1, wherein a positioning assembly is arranged between the first clamping piece and the second clamping piece, the positioning assembly comprises a first positioning spine and a second positioning spine, the upper end and the lower end of one side of the first clamping piece facing the second clamping piece are both fixed with the first positioning spine, and the upper end and the lower end of one side of the second clamping piece facing the first clamping piece are both fixed with the second positioning spine which is matched with the first positioning spine to play a positioning role.
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| CN202110791503.5A CN113499106B (en) | 2021-07-13 | 2021-07-13 | Elastic spine spinous process opening device |
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| CN202110791503.5A CN113499106B (en) | 2021-07-13 | 2021-07-13 | Elastic spine spinous process opening device |
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| CN101708128A (en) * | 2009-12-11 | 2010-05-19 | 上海凯利泰医疗科技有限公司 | Device for spreading spinous process |
| CN102440832A (en) * | 2010-10-08 | 2012-05-09 | 宝楠生技股份有限公司 | Device for fastening and fixing spinous process of spine |
| WO2013072582A2 (en) * | 2011-11-17 | 2013-05-23 | Prosteel | Spinal intervertebral implant |
| CN107374716A (en) * | 2017-09-06 | 2017-11-24 | 博能华医疗器械（北京）有限公司 | A kind of reducing spinous process merges Interal fixation system |
| CN207750361U (en) * | 2017-12-28 | 2018-08-21 | 李建伟 | A clamping self-locking nut |
| CN210931805U (en) * | 2019-08-15 | 2020-07-07 | 北京天智航医疗科技股份有限公司 | Adapter and surgical tool assembly of tracer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101136632B1 (en) * | 2009-07-03 | 2012-04-18 | 이범규 | Buckle device with elastic band and article including the same |
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| WO2003096916A1 (en) * | 2002-05-21 | 2003-11-27 | Peter Metz-Stavenhagen | Anchoring element for securing a rod on a vertebra |
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| CN101708128A (en) * | 2009-12-11 | 2010-05-19 | 上海凯利泰医疗科技有限公司 | Device for spreading spinous process |
| CN102440832A (en) * | 2010-10-08 | 2012-05-09 | 宝楠生技股份有限公司 | Device for fastening and fixing spinous process of spine |
| WO2013072582A2 (en) * | 2011-11-17 | 2013-05-23 | Prosteel | Spinal intervertebral implant |
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| CN113499106A (en) | 2021-10-15 |
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