CN212394983U - Spine minimally invasive multifunctional distraction device - Google Patents
Spine minimally invasive multifunctional distraction device Download PDFInfo
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- CN212394983U CN212394983U CN202021232806.0U CN202021232806U CN212394983U CN 212394983 U CN212394983 U CN 212394983U CN 202021232806 U CN202021232806 U CN 202021232806U CN 212394983 U CN212394983 U CN 212394983U
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- 230000007246 mechanism Effects 0.000 claims abstract description 55
- 230000007480 spreading Effects 0.000 claims description 34
- 230000009471 action Effects 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 10
- 230000008901 benefit Effects 0.000 description 4
- 238000001356 surgical procedure Methods 0.000 description 4
- 230000009545 invasion Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000002324 minimally invasive surgery Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 208000002847 Surgical Wound Diseases 0.000 description 1
- 206010052428 Wound Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model belongs to the technical field of the medical instrument technique and specifically relates to a multi-functional distraction device of backbone wicresoft. The spine minimally invasive multifunctional distraction device comprises a first rack, a first direction distraction mechanism and a second direction distraction mechanism, wherein the first direction distraction mechanism is vertically arranged on the first rack and can move or lock on the first rack along a first direction vertical to the arrangement direction of the first rack; the second direction expanding mechanism is vertically arranged on the first rack and can move or lock on the first rack along a second direction parallel to the arrangement direction of the first rack; the second direction struts the mechanism and is provided with two along first direction struts the mechanism symmetry. The utility model discloses a multi-functional distraction device of backbone wicresoft, first direction distraction mechanism and second direction distraction mechanism adjustment are convenient, and the adjustment process is steady, struts effectually to the incision of wicresoft, can only change local structure, material saving after the local damage.
Description
Technical Field
The utility model belongs to the technical field of the medical instrument technique and specifically relates to a multi-functional distraction device of backbone wicresoft.
Background
In the technical field of minimally invasive spine surgery, the minimally invasive spine surgery has the advantages of small incision, less wound, quick recovery and the like, and is a development trend of spine surgery; for the operation of only needing to do single-section vertebral body nail and rod placing and the simple intervertebral disc decompression operation, the operation visual field can be opened only by a small channel to perform the operation.
Minimally invasive surgery has many difficulties in implementation due to the small surgical incision, such as: limited field of view, limited light source, limited operable space, etc. In order to make the minimally invasive surgery more smoothly, the spine minimally invasive hand mainly establishes a channel through a distraction mechanism at present, enlarges and improves the surgical field of the bottom layer of the skin, avoids the infiltration of muscle tissues and blood in the surgery and avoids the damage to the muscle tissues.
The existing minimally invasive multifunctional spinal distraction device has at least the following defects in the practical application process: (1) the position of the opening mechanism of the opening device is inconvenient to adjust, and the stability of the position adjusting process is insufficient; (2) the distraction device generally only comprises a left distraction mechanism and a right distraction mechanism, so that the distraction effect on the incision is poor; (3) the structure of the opening mechanism is unreasonable, and the opening mechanism needs to be integrally replaced when being partially damaged, thereby causing resource waste.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a multi-functional distraction device of backbone wicresoft overcomes among the aforementioned prior art that the distraction mechanism position adjustment of distraction device is inconvenient, the distraction mechanism position adjustment process stationarity is not enough, it is not good to the notched effect of strutting, the distraction mechanism structure sets up unreasonablely, need wholly change when the distraction mechanism part damages etc. not enough.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides a multi-functional distraction device of backbone wicresoft, includes that first rack, first direction strut mechanism and second direction strut the mechanism, wherein:
the first direction distraction mechanism is vertically arranged on the first rack and can move or lock on the first rack along a first direction vertical to the arrangement direction of the first rack;
the second direction distraction mechanism is vertically arranged on the first rack and can move or lock on the first rack along a second direction parallel to the arrangement direction of the first rack;
two second direction opening mechanisms are symmetrically arranged along the first direction opening mechanism;
when the incision dilator is used, the incision is propped open in the second direction through the two second-direction propping mechanisms, and the incision is propped open in the first direction through the first-direction propping mechanism, so that the propping effect on the incision is improved.
Further, the first direction struts the mechanism and includes that first link block, second rack remove spacing subassembly, push jack, first piece, the first piece adjustment subassembly that struts, wherein:
the first connecting block is vertically arranged in the middle of the first rack, a first through hole perpendicular to the arrangement direction of the first rack is formed in the first connecting block, the second rack is inserted into the first through hole, a first groove perpendicular to the first through hole is formed in the first connecting block, the first groove and the first through hole form a cross-shaped structure, and a second rack moving limiting assembly is arranged in the first groove;
the second rack moving limiting component comprises a first spring, a first rectangular block, a first limiting rod and a rack clamping block, the first spring is arranged at the bottom of the first groove, the first spring is connected with the first rectangular block, the tail end of the first rectangular block extends out of the first groove, a second through hole is formed in the first rectangular block, the rack clamping block matched with teeth of the second rack is fixed on the second through hole of the first rectangular block, the second rack penetrates through the second through hole, the teeth of the second rack are meshed with the rack clamping block, a first strip hole is formed above the second through hole of the first rectangular block, the first limiting rod penetrates into the first strip hole, two ends of the first limiting rod are installed on the side wall of the first groove, when the second rack does not move, the rack clamping block is clamped in two adjacent teeth of the second rack under the action of the first spring, so that the position of the second rack is kept stable, when the second rack is pulled and pulled, under the action of tooth pushing friction of the second rack and the elastic force of the first spring, the first rectangular block moves back and forth along the first groove, but the moving range is limited by the first long-strip-shaped hole and the first limiting rod until the position of the second rack is well adjusted and does not move any more, and at the moment, the rack clamping block is clamped in two adjacent teeth of the second rack again;
a part of the second rack extending out of the first connecting block is provided with a push sheet for pushing the second rack to move, the second rack is moved by holding the push sheet, so that the second rack and the first connecting block generate relative displacement, one end of the second rack is sequentially provided with a first opening and a first threaded hole, the first spreading member is in an inverted L-shaped plate body structure, the initial end of a horizontal plate body of the first spreading member is hinged in the first opening of the second rack, a horizontal plate body of the first spreading member is provided with a first limiting hole, a limiting clamping plate is arranged in the first limiting hole, the first spreading member adjusting assembly comprises a first bolt, the lower end of a screw rod of the first bolt is provided with a conical groove, the first bolt is screwed in from the first threaded hole of the second rack, the tail end of the screw rod of the first bolt is positioned in the first limiting hole, and the limiting clamping plate is clamped in the conical groove; when the first bolt is screwed, the second rack is kept still, and the conical groove of the first bolt is clamped by the limiting clamping plate, so that the screw rod of the first bolt forms pushing or pulling force on the first opening part, the first opening part moves along the hinged end of the first opening part, and the longitudinal plate body of the first opening part opens the notch or relaxes and resets the notch.
Furthermore, a second threaded hole is formed in the first connecting block, a second bolt is arranged in the second threaded hole, and after the position of the second rack is adjusted, the second bolt is screwed, so that the second rack is extruded and locked by the second bolt.
Furthermore, first piece that struts is integrated into one piece's plate body structure, or for the plate body structure of joint installation, when setting up to the joint structure, be convenient for change alone when local structure appears damaging and damage the part.
Further, the second direction struts the mechanism and includes rack connecting subassembly, rotatory benchmark piece, rotating member, rotation regulation spare and second strut the piece, wherein:
the rack connecting assembly comprises a second connecting block, a first gear, a gear rotating rod and an arc limiting handle, wherein a third through hole is formed in the second connecting block along the second direction, a first rack penetrates into the third through hole, a gear containing hole communicated with the third through hole is formed in the second connecting block, a first gear is rotatably arranged in the gear containing hole and meshed with the first rack, the gear rotating rod is connected to the first gear and extends out of the second connecting block, when the gear rotating rod is manually rotated after the first rack is fixed in position, the first gear rotates to enable the rack connecting assembly to integrally move along the first rack, a second opening communicated with the third through hole is formed in the end face of the second connecting block, which is on the same side with the teeth of the first rack, an arc limiting handle is hinged in the second opening, one end of the arc limiting handle is clamped between two adjacent teeth of the first rack, the other end of the arc-shaped limiting handle extends out of the second connecting block and is connected with the second connecting block through a second spring, when the gear rotating rod is screwed, the rack connecting assembly integrally moves along the first rack, one end of the arc-shaped limiting handle moves and is meshed with two adjacent teeth of the first rack under the thrust action of the second spring, the position of the rack connecting assembly on the first rack is stable when the gear rotating rod is stopped being screwed, when the arc-shaped limiting handle is pressed down to the second connecting block, the arc-shaped limiting handle is not contacted with the first rack, and the rack connecting assembly is pushed at the moment and can rapidly slide on the first rack;
the rotary reference part is arranged along a first direction, the starting end of the rotary reference part is connected with a second connecting block, the main body of the rotary reference part is of a rod body structure, one side of the main body of the rotary reference part is provided with a connecting lug, the connecting lug is arranged along a second direction, a second strip-shaped hole is formed in the connecting lug along the second direction, and a rotary adjusting part moving groove is formed in the position, corresponding to the connecting lug, of the main body of the rotary reference part;
the main body of the rotating part is of a cylindrical structure, the rotating part is sleeved on the outer side of the main body of the rotating reference part, a connecting lug movable opening and a rotating adjusting part movable opening are formed in the main body of the rotating part, the position of the rotating adjusting part movable opening corresponds to the position of a rotating adjusting part movable groove, rotating adjusting part clamping plates are arranged on two sides of the rotating adjusting part movable opening along a first direction, the rotating adjusting part clamping plates are arranged along a second direction, and the position of the rotating adjusting part clamping plates corresponds to the position of the connecting lugs;
the rotary adjusting piece comprises a ball body, a hinged rod, a threaded rod and an I-shaped piece, the ball body is connected with the initial end of the threaded rod, a threaded hole is formed in the I-shaped piece, the tail end of the threaded rod is screwed into the threaded hole, the middle part of the outer wall of the I-shaped piece is rotationally limited between two clamping plates of the rotary adjusting piece, the ball body is hinged in a second long strip hole of the connecting lug through the hinged rod, due to the fact that the position of the rotary reference piece is fixed, when the I-shaped piece is screwed between the two clamping plates of the rotary adjusting piece, the relative position of the threaded rod and the I-shaped piece changes, and due to the fact that the ball body is hinged in a second long strip hole of the connecting lug, when the I-shaped piece is screwed, the;
the second props open the piece and includes the connector and props open the board, and the top of connector and the end-to-end connection of rotating member, the end and the board of propping open of connector are connected, prop open the board and be the arc structure, when the rotating member was rotatory on rotatory benchmark piece, drive the second and prop open the piece and rotate thereupon, form to the incision and strut the expansion effect.
Further, the second spreading member and the rotating member are integrally formed.
Furthermore, the second strutting piece is connected with the rotating reference piece and the rotating piece in a clamping mode.
Further, the end of the rotating reference piece is provided with a connecting rod, the end of the connecting rod is provided with a circle of annular groove, a jack capable of being inserted into the connecting rod is formed in the connecting head of the second spreading piece, the jack is in clearance fit with the connecting rod, a second groove is formed in the side face of the connecting head, the second groove and the jack are of a cross-shaped structure, a connecting rod limiting component is arranged in the second groove, and after the connecting rod is inserted into the jack, the connecting rod is limited by the connecting rod limiting component.
Furthermore, the connecting rod limiting component comprises a third spring, a second rectangular block, a second limiting rod and a connecting rod clamping edge, the starting end of the third spring is connected with the bottom of the second groove, the tail end of the third spring is connected with the second rectangular block, the second rectangular block is positioned in the second groove, the tail end of the second rectangular block extends out of the opening end of the second groove, the second rectangular block is provided with a fourth through hole, a connecting rod clamping edge is arranged in the fourth through hole, when the connecting rod penetrates through the fourth through hole, the annular groove on the connecting rod is clamped by the connecting rod clamping edge under the action of the third spring, a third strip hole is arranged on the second rectangular block, a second limiting rod penetrates into the third strip hole, two ends of the second limiting rod are arranged on the side wall of the second groove, under the effect of the connecting rod limiting assembly, the second spreading part and the rotating reference part can be quickly installed and detached.
Further, the end of rotating member is provided with fan-shaped recess, the connector top that the second propped open the piece is provided with fan-shaped flange, and rotating member and connector are through fan-shaped recess and fan-shaped flange joint, ensure when the second propped open the piece and is in the mounted state with rotatory benchmark piece, the second propped open the piece and can rotate along with the rotation of rotating member under the joint restriction of fan-shaped recess and fan-shaped flange.
The utility model has the advantages that: compared with the prior art, the utility model discloses a multi-functional distraction device of backbone wicresoft has following advantage: (1) the first direction opening mechanism is convenient to adjust and good in stability in the adjusting process through the arrangement of the second rack moving limiting assembly, the first opening piece can also adjust the angle after opening the minimally invasive incision to the designated position through the arrangement of the first opening piece adjusting assembly, the opening effect is improved, the second direction opening mechanism is convenient to adjust and good in stability in the adjusting process through the arrangement of the rack connecting assembly, and the angle can be adjusted after the second opening piece opens the minimally invasive incision to the designated position through the arrangement of the connecting rod limiting assembly, so that the opening effect is improved; (2) the first direction opening mechanism and the second direction opening mechanism can open the minimally invasive incision in three directions, so that the opening effect is better; (3) the first spreading piece and the second spreading piece are convenient to mount and dismount, local replacement is facilitated, and resources are saved.
Drawings
Fig. 1 is a perspective view of the overall structure of the utility model in the use state;
fig. 2 is a schematic top view of the overall structure of the utility model in the use state;
FIG. 3 is a schematic view of the internal structure of the utility model in the use state;
FIG. 4 is a schematic cross-sectional view A-A' of FIG. 2 according to the present invention;
fig. 5 is an enlarged schematic view of the structure of the second rack movement limiting component of the present invention;
fig. 6 is an enlarged schematic view of the structure of the rotating reference member, the rotating member and the second spreader in the connection state of the present invention;
fig. 7 is an enlarged schematic view of the structure of the rotating reference member of the present invention;
FIG. 8 is an enlarged view of the structure of the rotary member of the present invention;
fig. 9 is an enlarged schematic view of the structure of the rotary adjusting member of the present invention;
fig. 10 is a cross-sectional view of the rotary adjustment member of the present invention;
fig. 11 is an enlarged schematic view of the structure of the connecting rod limiting assembly of the present invention;
fig. 12 is an enlarged schematic view of the second spreader of the present invention;
fig. 13 is a schematic plan view of the structure of the present invention in an unused state;
wherein, 1 a first rack, 2 a first direction opening mechanism, 201 a first connecting block, 202 a second rack, 203 a pushing sheet, 204 a first opening piece, 205 a first through hole, 206 a first groove, 207 a first spring, 208 a first rectangular block, 209 a first limit rod, 210 a rack clamping block, 211 a second through hole, 212 a first long hole, 213 a first opening, 214 a first threaded hole, 215 a first limit hole, 216 a limit clamping plate, 217 a first bolt, 218 a conical groove, 219 a second threaded hole, 220 a second bolt, 3 a second direction opening mechanism, 301 a rotating reference piece, 302 a rotating piece, 303 a second opening piece, 3031, 3032 an opening plate, 304 a second connecting block, 305 a first gear, 306 a gear rotating rod, 307 an arc limit handle, 308 a third through hole, 309 a gear containing hole, 310 a second opening, 311 a second spring, 312 a connecting lug, 313 a second long hole and 314 a movable groove of a rotary adjusting piece, 315 a movable opening of a connecting lug, 316 a movable opening of a rotary adjusting piece, 317 a clamping plate of the rotary adjusting piece, 318 a sphere, 319 a hinged rod, 320 a threaded rod, 321 an I-shaped piece, 322 a threaded hole, 323 a connecting rod, 324 a ring-shaped groove, 325 a second groove, 326 a third spring, 327 a second rectangular block, 328 a second limiting rod, 329 a connecting rod clamping edge, 330 a fourth through hole, 331 a third long hole, 332 a fan-shaped groove and 333 a fan-shaped flange.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.
In the embodiment shown in fig. 1 to 13, a minimally invasive multifunctional spine distraction device comprises a first rack 1, a first direction distraction mechanism 2 and a second direction distraction mechanism 3, wherein:
the first direction opening mechanism 2 is vertically arranged on the first rack 1 and can move or lock on the first rack 1 along a first direction vertical to the arrangement direction of the first rack 1;
the second direction expanding mechanism 3 is vertically arranged on the first rack 1 and can move or lock on the first rack 1 along a second direction parallel to the arrangement direction of the first rack 1;
two second direction opening mechanisms 3 are symmetrically arranged along the first direction opening mechanism 2;
when the minimally invasive incision dilator is used, the minimally invasive incision is distracted in the second direction through the two second direction distraction mechanisms 3, and the minimally invasive incision is distracted in the first direction through the first direction distraction mechanism 2, so that the distraction effect of the minimally invasive incision is improved.
In this embodiment, the first direction opening mechanism 2 includes a first connecting block 201, a second rack 202, a second rack moving limit component, a push plate 203, a first opening component 204, and a first opening component adjusting component, wherein:
the first connecting block 201 is vertically arranged in the middle of the first rack 1, a first through hole 205 perpendicular to the arrangement direction of the first rack is formed in the first connecting block 201, the second rack 202 is inserted into the first through hole 205, a first groove 206 perpendicular to the first through hole 205 is formed in the first connecting block 201, the first groove 206 and the first through hole 205 form a cross-shaped structure, and a second rack movement limiting component is arranged in the first groove 206;
the second rack movement limiting assembly comprises a first spring 207, a first rectangular block 208, a first limiting rod 209 and a rack clamping block 210, the first spring 207 is arranged at the bottom of the first groove 206, the first spring 207 is connected with the first rectangular block 208, the tail end of the first rectangular block 208 extends out of the first groove 206, the first rectangular block 208 is provided with a second through hole 211, the second through hole 211 of the first rectangular block 208 is fixedly provided with the rack clamping block 210 matched with teeth of the second rack 202, the second rack 202 penetrates through the second through hole 211, the teeth of the second rack 202 are meshed with the rack clamping block 210, a first long hole 212 is arranged above the second through hole 211 of the first rectangular block 208, the first limiting rod 209 penetrates into the first long hole 212, two ends of the first limiting rod 209 are arranged on the side wall of the first groove 206, when the second rack 202 does not move, the rack clamping block 210 is clamped in two adjacent teeth of the second rack 202 under the action of the first spring 207, the position of the second rack 202 is kept stable, when the second rack 202 is pulled and pulled, under the tooth pushing friction action of the second rack 202 and the elastic force action of the first spring 207, the first rectangular block 208 moves back and forth along the first groove 206, but the moving range is limited by the first long strip hole 212 and the first limiting rod 209 until the position of the second rack 202 is well adjusted and does not move any more, and at the moment, the rack fixture block 210 is clamped in two adjacent teeth of the second rack 202 again;
a pushing plate 203 for pushing the second rack 202 to move is arranged on the part of the second rack 202 extending out of the first connecting block 201, the second rack 202 is moved by holding the pushing plate 203, so that the second rack 202 and the first connecting block 201 generate relative displacement, one end of the second rack 202 is sequentially provided with a first opening 213 and a first threaded hole 214, the first spreading member 204 is in an inverted L-shaped plate structure, the initial end of the horizontal plate of the first spreading member 204 is hinged in the first opening 213 of the second rack 202, a first limiting hole 215 is formed on the horizontal plate of the first spreading member 204, a limiting clamping plate 216 is arranged in the first limiting hole 215, the first spreading member adjusting assembly comprises a first bolt 217, a conical groove 218 is arranged at the lower end of the screw of the first bolt 217, the first bolt 217 is screwed into the first threaded hole 214 of the second rack 202, the end of the screw of the first bolt 217 is positioned in the first limiting hole 215, and the limiting clamping plate 216 is clamped in the conical groove 218; when the first bolt 217 is screwed, the second rack 202 is kept still, and the tapered groove 218 of the first bolt 217 is clamped by the limiting clamping plate 216, so that the screw of the first bolt 217 forms pushing or pulling force on the first spreading member 204, so that the first spreading member 204 moves along the hinged end of the first spreading member 204 and the first opening 213, and the longitudinal plate body of the first spreading member 204 spreads or loosely resets the minimally invasive incision.
In this embodiment, the first connecting block 201 is provided with a second threaded hole 219, a second bolt 220 is disposed in the second threaded hole 219, and after the position of the second rack 202 is adjusted, the second bolt 220 is screwed, so that the second bolt 220 extrudes and locks the second rack 202.
In this embodiment, the first spreader 204 is an integrally formed plate structure, or a plate structure mounted in a clamping manner, and when the first spreader is configured as a clamping structure, it is convenient to replace a damaged portion alone when a local structure is damaged.
In this embodiment, the second direction stretching mechanism 3 includes a rack connecting assembly, a rotating reference member 301, a rotating member 302, a rotating adjusting member, and a second stretching member 303, wherein:
the rack connecting assembly comprises a second connecting block 304, a first gear 305, a gear rotating rod 306 and an arc-shaped limiting handle 307, a third through hole 308 is formed in the second connecting block 304 along the second direction, the first rack 1 penetrates into the third through hole 308, a gear accommodating hole 309 communicated with the third through hole 308 is formed in the second connecting block 304, the first gear 305 is rotatably arranged in the gear accommodating hole 309, the first gear 305 is meshed with the first rack 1, the gear rotating rod 306 is connected to the first gear 305, the gear rotating rod 306 extends out of the second connecting block 304, after the position of the first rack 1 is fixed, when the gear rotating rod 306 is manually rotated, the first gear 305 rotates, so that the rack connecting assembly integrally moves along the first rack 1, a second opening 310 communicated with the third through hole 308 is formed in the end face of the second connecting block 304 and the same side as the teeth of the first rack 1, the arc-shaped limiting handle 307 is hinged in the second opening 310, one end of an arc-shaped limiting handle 307 is clamped between two adjacent teeth of the first rack 1, the other end of the arc-shaped limiting handle 307 extends out of the second connecting block 304 and is connected with the second connecting block 304 through a second spring 311, when the gear rotating rod 306 is screwed, the whole rack connecting assembly moves along the first rack 1, one end of the arc-shaped limiting handle 307 moves and is meshed with some two adjacent teeth of the first rack under the thrust action of the second spring 311, the position of the rack connecting assembly on the first rack 1 is stable when the gear rotating rod is stopped being screwed, when the arc-shaped limiting handle 307 is pressed downwards towards the second connecting block 304, the arc-shaped limiting handle 307 is not contacted with the first rack 1, the rack connecting assembly is pushed at the moment, and the rack connecting assembly can rapidly slide on the first rack 1;
the rotary reference piece 301 is arranged along a first direction, the starting end of the rotary reference piece 301 is connected with the second connecting block 304, the main body of the rotary reference piece 301 is of a rod body structure, one side of the main body of the rotary reference piece 301 is provided with a connecting lug 312, the connecting lug 312 is arranged along a second direction, a second long hole 313 is formed in the connecting lug 312 along the second direction, and a rotary adjusting piece moving groove 314 is formed in the position, corresponding to the connecting lug 312, of the main body of the rotary reference piece 301;
the main body of the rotating part 302 is of a cylindrical structure, the rotating part 302 is sleeved outside the main body of the rotating reference part 301, the main body of the rotating part 302 is provided with a connecting lug movable opening 315 and a rotating adjusting part movable opening 316, the position of the rotating adjusting part movable opening 316 corresponds to the position of the rotating adjusting part movable groove 314, two sides of the rotating adjusting part movable opening 315 in the first direction are both provided with rotating adjusting part clamping plates 317, the rotating adjusting part clamping plates 317 are arranged in the second direction, and the position of the rotating adjusting part clamping plates 317 corresponds to the position of the connecting lug 312;
the rotary adjusting piece comprises a ball 318, a hinged rod 319, a threaded rod 320 and an I-shaped piece 321, the ball 318 is connected with the beginning end of the threaded rod 320, the I-shaped piece 321 is provided with a threaded hole 322, the tail end of the threaded rod 320 is screwed into the threaded hole 322, the middle part of the outer wall of the I-shaped piece 321 is rotationally limited between the two rotary adjusting piece clamping plates 317, the ball 318 is hinged in the second long hole 313 of the connecting lug 312 through the hinged rod 319, and due to the fixed position of the rotary reference piece 301, when the I-shaped piece 321 is screwed between the two rotary adjusting piece clamping plates 317, the relative position of the threaded rod 320 and the I-shaped piece 321 changes, and because the ball 318 is hinged in the second long hole 313 of the connecting lug 312, when the I-shaped piece 321 is screwed, the I-shaped piece 321 drives the two rotary adjusting piece clamping plates 317 to displace, and further drives the rotary piece 302;
the second spreading member 303 comprises a connector 3031 and a spreading plate 3032, the starting end of the connector 3031 is connected with the tail end of the rotating member 302, the tail end of the connector 3031 is connected with the spreading plate 3032, the spreading plate 3032 is in an arc-shaped structure, and when the rotating member 302 rotates on the rotating reference member 301, the second spreading member 3032 is driven to rotate along with the rotating member, so that a spreading and expanding effect is formed on the minimally invasive incision. In this embodiment, the second spreader 303 is engaged with the rotating reference member 301 and the rotating member 302.
In this embodiment, a connecting rod 323 is disposed at the end of the rotating reference component 301, a ring of annular groove 324 is disposed at the end of the connecting rod 323, a jack 324 capable of being inserted into the connecting rod 323 is disposed on the connecting head 3031 of the second spreading component 303, the jack 324 is in clearance fit with the connecting rod 323, a second groove 325 is disposed on the side surface of the connecting head 3031, the second groove 325 and the jack 324 are in a cross-shaped structure, a connecting rod limiting component is disposed in the second groove 325, and after the connecting rod is inserted into the jack 324, the connecting rod 323 is limited by the connecting rod limiting component.
In this embodiment, the connecting rod limiting assembly includes a third spring 326, a second rectangular block 327, a second limiting rod 328 and a connecting rod clamping edge 329, the starting end of the third spring 326 is connected with the bottom of the second groove 325, the terminal end of the third spring 326 is connected with the second rectangular block 327, the second rectangular block 327 is located in the second groove 325, the terminal end of the second rectangular block 327 extends out from the open end of the second groove 325, the second rectangular block 327 is provided with a fourth through hole 330, a connecting rod clamping edge 329 is arranged in the fourth through hole 330, when the connecting rod 323 penetrates through the fourth through hole 330, the annular groove 324 on the connecting rod 323 is clamped by the connecting rod clamping edge 329 under the action of the third spring 326, the second rectangular block 327 is provided with a third long hole 331, the second limiting rod 328 penetrates through the third long hole 331, both ends of the second limiting rod 328 are mounted on the side wall of the second groove 325, under the action of the connecting rod limiting assembly, quick mounting and dismounting of the second spreader 303 to and from the rotating reference 301 can be achieved.
In this embodiment, the end of the rotating member 302 is provided with a sector groove 332, the starting end of the connector 3031 of the second spreading member 303 is provided with a sector flange 333, and the rotating member 302 and the connector 3031 are clamped by the sector groove 332 and the sector flange 333, so that when the second spreading member 303 and the rotating reference member 301 are in the mounted state, the second spreading member 303 can rotate along with the rotation of the rotating member 301 under the limitation of the clamping of the sector groove 332 and the sector flange 333.
The working principle is as follows: the utility model discloses a spine minimal invasion multifunctional distraction device, two second direction distraction mechanisms 3 are close to a first direction distraction mechanism 2 under the initial state, at the moment, two second distraction pieces 303 and a first distraction piece lean against each other, the minimal invasion operation distraction device is integrally moved until the first distraction piece and the second distraction piece both enter a minimal invasion incision, a first rack 1 is fixed in position, the position of a second rack 202 is adjusted by pushing a push sheet 203, a limiting component is moved by a second rack after a first distraction piece 204 is adjusted to a proper position, the second rack 202 is locked by a second bolt 220, then the angle of the first distraction piece 204 is adjusted by a first distraction piece adjusting component, the distraction range is expanded, the position of the second direction distraction mechanism 2 in a second direction is adjusted by a rack connecting component, the position is automatically locked by the rack connecting component after the adjustment, then the angle of the second distraction piece 303 is adjusted by rotating an adjusting component, the expansion range is enlarged.
The above embodiments are only specific cases of the present invention, and the protection scope of the present invention includes but is not limited to the forms and styles of the above embodiments, and any suitable changes or modifications made thereto by those skilled in the art according to the claims of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a multi-functional distraction device of backbone wicresoft which characterized in that: including first rack, first direction distraction mechanism and second direction distraction mechanism, wherein:
the first direction distraction mechanism is vertically arranged on the first rack and can move or lock on the first rack along a first direction vertical to the arrangement direction of the first rack;
the second direction distraction mechanism is vertically arranged on the first rack and can move or lock on the first rack along a second direction parallel to the arrangement direction of the first rack;
and two second direction opening mechanisms are symmetrically arranged along the first direction opening mechanism.
2. The minimally invasive multifunctional distraction device of the spine of claim 1, wherein: first direction struts mechanism includes that first connecting block, second rack remove spacing subassembly, push jack, first piece, the first piece adjustment subassembly that struts, wherein:
the first connecting block is vertically arranged in the middle of the first rack, a first through hole perpendicular to the arrangement direction of the first rack is formed in the first connecting block, the second rack is inserted into the first through hole, a first groove perpendicular to the first through hole is formed in the first connecting block, the first groove and the first through hole form a cross-shaped structure, and a second rack moving limiting assembly is arranged in the first groove;
the second rack moving limiting assembly comprises a first spring, a first rectangular block, a first limiting rod and a rack clamping block, the first spring is arranged at the bottom of the first groove, the first spring is connected with the first rectangular block, the tail end of the first rectangular block extends out of the first groove, a second through hole is formed in the first rectangular block, the rack clamping block matched with teeth of the second rack is fixed on the second through hole of the first rectangular block, the second rack penetrates through the second through hole, the teeth of the second rack are meshed with the rack clamping block, a first strip hole is formed above the second through hole of the first rectangular block, the first limiting rod penetrates into the first strip hole, and two ends of the first limiting rod are mounted on the side wall of the first groove;
the part of the second rack extending out of the first connecting block is provided with a push sheet for pushing the second rack to move, one end of the second rack is sequentially provided with a first opening and a first threaded hole, the first spreading piece is of an inverted L-shaped plate body structure, the initial end of a horizontal plate body of the first spreading piece is hinged in the first opening of the second rack, a first limiting hole is formed in the horizontal plate body of the first spreading piece, a limiting clamping plate is arranged in the first limiting hole, the first spreading piece adjusting assembly comprises a first bolt, a conical groove is formed in the lower end of a screw rod of the first bolt, the first bolt is screwed in from the first threaded hole of the second rack, the tail end of the screw rod of the first bolt is located in the first limiting hole, and the limiting clamping plate is clamped in the conical groove.
3. The minimally invasive multifunctional distraction device of the spine of claim 2, wherein: and a second threaded hole is formed in the first connecting block, and a second bolt is arranged in the second threaded hole.
4. The minimally invasive multifunctional distraction device of the spine of claim 2, wherein: the first opening piece is of an integrally formed plate body structure or a plate body structure installed in a clamping mode.
5. The minimally invasive multifunctional distraction device of the spine of claim 1, wherein: the second direction struts the mechanism and includes rack coupling assembling, rotatory benchmark piece, rotating member, rotation regulation spare and second and struts the piece, wherein:
the rack connecting assembly comprises a second connecting block, a first gear, a gear rotating rod and an arc-shaped limiting handle, wherein a third through hole is formed in the second connecting block along the second direction, the first rack penetrates into the third through hole, a gear accommodating hole communicated with the third through hole is formed in the second connecting block, the first gear is rotatably arranged in the gear accommodating hole and meshed with the first rack, the gear rotating rod is connected to the first gear and extends out of the second connecting block, a second opening communicated with the third through hole is formed in the end face, on the same side of teeth of the first rack, of the second connecting block, the arc-shaped limiting handle is hinged in the second opening, one end of the arc-shaped limiting handle is clamped between two adjacent teeth of the first rack, and the other end of the arc-shaped limiting handle extends out of the second connecting block and is connected with the second connecting block through a second spring;
the rotary reference part is arranged along a first direction, the starting end of the rotary reference part is connected with a second connecting block, the main body of the rotary reference part is of a rod body structure, one side of the main body of the rotary reference part is provided with a connecting lug, the connecting lug is arranged along a second direction, a second strip-shaped hole is formed in the connecting lug along the second direction, and a rotary adjusting part moving groove is formed in the position, corresponding to the connecting lug, of the main body of the rotary reference part;
the main body of the rotating part is of a cylindrical structure, the rotating part is sleeved on the outer side of the main body of the rotating reference part, a connecting lug movable opening and a rotating adjusting part movable opening are formed in the main body of the rotating part, the position of the rotating adjusting part movable opening corresponds to the position of a rotating adjusting part movable groove, rotating adjusting part clamping plates are arranged on two sides of the rotating adjusting part movable opening along a first direction, the rotating adjusting part clamping plates are arranged along a second direction, and the position of the rotating adjusting part clamping plates corresponds to the position of the connecting lugs;
the rotary adjusting piece comprises a ball body, a hinge rod, a threaded rod and an I-shaped piece, the ball body is connected with the initial end of the threaded rod, a threaded hole is formed in the I-shaped piece, the tail end of the threaded rod is screwed into the threaded hole, the middle part of the outer wall of the I-shaped piece is rotationally limited between two clamping plates of the rotary adjusting piece, and the ball body is hinged in a second long strip hole of the connecting lug through the hinge rod;
the second strutting piece comprises a connector and a strutting plate, the starting end of the connector is connected with the tail end of the rotating piece, the tail end of the connector is connected with the strutting plate, and the strutting plate is of an arc structure.
6. The minimally invasive multifunctional distraction device of the spine of claim 5, wherein: the second spreader is integrally formed with the rotating member.
7. The minimally invasive multifunctional distraction device of the spine of claim 5, wherein: the second spreading part is clamped with the rotating reference part and the rotating part.
8. The minimally invasive multifunctional distraction device of the spine of claim 7, wherein: the end of the rotating reference piece is provided with a connecting rod, the end of the connecting rod is provided with a circle of annular groove, a jack capable of being inserted into the connecting rod is formed in the connecting head of the second spreading piece, the jack is in clearance fit with the connecting rod, a second groove is formed in the side face of the connecting head, the second groove and the jack are of a cross-shaped structure, and a connecting rod limiting assembly is arranged in the second groove.
9. The minimally invasive multifunctional distraction device of the spine of claim 8, wherein: the connecting rod limiting component comprises a third spring, a second rectangular block, a second limiting rod and a connecting rod clamping edge, the starting end of the third spring is connected with the groove bottom of the second groove, the tail end of the third spring is connected with the second rectangular block, the second rectangular block is located in the second groove, the tail end of the second rectangular block extends out of the opening end of the second groove, a fourth through hole is formed in the second rectangular block, the connecting rod clamping edge is arranged in the fourth through hole, the annular groove in the connecting rod is clamped by the connecting rod clamping edge under the action of the third spring when the connecting rod penetrates through the fourth through hole, a third strip hole is formed in the second rectangular block, the second limiting rod penetrates into the third strip hole, and two ends of the second limiting rod are installed on the side wall of the second groove.
10. The minimally invasive multifunctional distraction device of the spine of claim 9, wherein: the end of the rotating piece is provided with a fan-shaped groove, the starting end of the connector of the second spreading piece is provided with a fan-shaped flange, and the rotating piece and the connector are connected in a clamping mode through the fan-shaped groove and the fan-shaped flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021232806.0U CN212394983U (en) | 2020-06-30 | 2020-06-30 | Spine minimally invasive multifunctional distraction device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021232806.0U CN212394983U (en) | 2020-06-30 | 2020-06-30 | Spine minimally invasive multifunctional distraction device |
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| CN212394983U true CN212394983U (en) | 2021-01-26 |
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| CN202021232806.0U Active CN212394983U (en) | 2020-06-30 | 2020-06-30 | Spine minimally invasive multifunctional distraction device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111658032A (en) * | 2020-06-30 | 2020-09-15 | 山东威高骨科材料股份有限公司 | Strutting device for minimally invasive surgery |
| CN113317831A (en) * | 2021-07-09 | 2021-08-31 | 莒县人民医院 | Distractor for spinal surgery |
| CN115500878A (en) * | 2022-09-27 | 2022-12-23 | 四川大学华西医院 | Olif operation passageway distraction device |
| NL2037190A (en) * | 2024-03-06 | 2024-03-26 | The Second Affiliated Hospital Of Wenzhou Medical Univ | A Muscle-stretching Device for Spinal Surgery |
-
2020
- 2020-06-30 CN CN202021232806.0U patent/CN212394983U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111658032A (en) * | 2020-06-30 | 2020-09-15 | 山东威高骨科材料股份有限公司 | Strutting device for minimally invasive surgery |
| CN111658032B (en) * | 2020-06-30 | 2024-06-14 | 山东威高骨科材料股份有限公司 | Opening device for minimally invasive surgery |
| CN113317831A (en) * | 2021-07-09 | 2021-08-31 | 莒县人民医院 | Distractor for spinal surgery |
| CN115500878A (en) * | 2022-09-27 | 2022-12-23 | 四川大学华西医院 | Olif operation passageway distraction device |
| NL2037190A (en) * | 2024-03-06 | 2024-03-26 | The Second Affiliated Hospital Of Wenzhou Medical Univ | A Muscle-stretching Device for Spinal Surgery |
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