CN109431560B - Lumbar vertebra posterior surgery distraction device - Google Patents

Lumbar vertebra posterior surgery distraction device Download PDF

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Publication number
CN109431560B
CN109431560B CN201811519400.8A CN201811519400A CN109431560B CN 109431560 B CN109431560 B CN 109431560B CN 201811519400 A CN201811519400 A CN 201811519400A CN 109431560 B CN109431560 B CN 109431560B
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China
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fixed
transverse moving
block
back plate
support rod
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CN201811519400.8A
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CN109431560A (en
Inventor
廖琦
万文兵
蔡风
黄加裕
刘浪
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Second Affiliated Hospital to Nanchang University
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Second Affiliated Hospital to Nanchang University
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
    • A61B17/025—Joint distractors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
    • A61B17/025—Joint distractors
    • A61B2017/0256—Joint distractors for the spine

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

The invention discloses a lumbar vertebra posterior surgery distraction device, which is used for lumbar vertebra posterior surgery. The device comprises: the rail assembly is provided with a back plate, a rack and a sliding rail which are fixed with the back plate along the length direction; the first opening arm comprises a gear meshed with the rack and a transverse moving part rotationally connected with the gear, the gear is coaxially fixed with a manual wheel, and the transverse moving part is fixed with a first support rod and a sliding block sliding in the sliding rail; the second props open the arm, disposes the fixed block, the fixed block with the one end of horizontal pole is fixed, the fixed block dispose with the parallel second vaulting pole of first vaulting pole. The invention can stably and accurately open the conical section and provide stable operation space for medical staff.

Description

Lumbar vertebra posterior surgery distraction device
Technical Field
The present invention relates to the field of medical devices; in particular to a lumbar vertebra posterior surgery distraction device.
Background
The posterior lumbar interbody fusion cage is one kind of orthopedic spinal fusion surgical operation.
Medical personnel need strut the cone pitch through lumbar vertebrae way of escape retractor when the operation, provide the operation space for medical personnel.
However, the existing lumbar posterior retractor is a forceps-like operating tool. Medical personnel need continuously apply force when using traditional lumbar vertebrae way of escape retractor for keep strutting the taper joint. Meanwhile, when medical staff struts the conical sections, the precise control of the stretching amplitude is difficult.
Disclosure of Invention
The embodiment of the invention at least provides a lumbar vertebra posterior surgery distraction device which is used for lumbar vertebra posterior interbody fusion, can stably and accurately distract a taper joint and provides an operation space for medical staff.
The device comprises:
the rail assembly is provided with a back plate, a rack and a sliding rail which are fixed with the back plate along the length direction;
the first opening arm comprises a gear meshed with the rack and a transverse moving part rotationally connected with the gear, the gear is coaxially fixed with a manual wheel, and the transverse moving part is fixed with a first support rod and a sliding block sliding in the sliding rail;
the second opening arm is provided with a fixed block, the fixed block is fixed with one end of the slide rail, and the fixed block is provided with a second support rod parallel to the first support rod;
the transverse moving part is detachably connected with the first support rod;
the transverse moving part is fixed with a rectangular block, the first support rod is provided with a regular dodecagonal groove, the rectangular block is fixed on the regular dodecagonal groove through any two opposite inner side surfaces of the regular dodecagonal groove, and the first support rod is fixed with the transverse moving part through a screw.
In some embodiments of the present disclosure, the second distraction arm and the first distraction arm are identical in structure.
In some embodiments disclosed in the present invention, an upper plate is fixed at the upper end of the back plate, a lower plate is fixed at the lower end of the back plate, an upper slide rail is fixed on the upper plate along the length direction of the back plate, and a lower slide rail is fixed on the lower plate along the length direction of the back plate;
the transverse moving block is fixed with an upper sliding block and a lower sliding block, the upper sliding block slides on the upper sliding rail, and the lower sliding block slides on the lower sliding rail.
In some embodiments of the disclosure, an elastic body is fixed to each of two ends of the back plate, and one end of the elastic body faces the traverse portion.
In some embodiments of the disclosure, a wire casing is disposed along a length direction of the first stay, at least one light emitting hole communicated with the wire casing is disposed at the other end of the first stay opposite to the traverse portion, the light emitting hole penetrates through two side surfaces of the first stay, at least one lighting fiber is disposed in the wire casing, a tail end of any lighting fiber extends into the light emitting hole, and transparent covers for covering the light emitting hole are disposed on two side surfaces of the first stay respectively.
In some embodiments of the present disclosure, the other side of the first stay bar opposite to the second stay bar is fixed with an arc plate which is bent outwards.
In some embodiments of the present disclosure, the first brace bar is disposed in an inner arc relative to a side of the second brace bar.
In view of the above, other features and advantages of the disclosed exemplary embodiments will become apparent from the following detailed description of the disclosed exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a block diagram of an example apparatus;
FIG. 2 is a detail view of FIG. 1;
FIG. 3 is a detail view of the track assembly;
FIG. 4 is an enlarged view of portion A of FIG. 2;
FIG. 5 is a block diagram of a first distracting arm;
FIG. 6 is an enlarged view of the portion B of FIG. 5;
FIG. 7 is a detail view of the first brace concealing the vanes;
FIG. 8 is a block diagram of a hidden blade of another embodiment of the apparatus.
The attached drawings are marked as follows:
100. a track assembly; 110. a back plate; 120. an upper plate; 121. an upper slide rail; 130. a lower plate; 131; a lower slide rail; 140. a rack; 150. a side plate; 160. an elastic bulge; 200. a first spreader arm; 210. transversely moving the blocks; 220. an operation panel; 230. cushion blocks; 241. a gear; 242. a rotating shaft; 243. a hand-operated wheel; 250. an upper slide block; 260. a lower slide block; 270. a regular dodecagonal groove; 300. a second spreader arm; 400. a first stay bar; 410. a wiring groove; 420. a light emitting hole; 430. a transparent cover; 440. an arc-shaped plate; 450. a rectangular block.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
The embodiment exemplarily discloses a lumbar posterior surgery distraction device; the device of this embodiment can be in the lumbar vertebrae way of escape interbody fusion cage merge the art to the stable and accurate distraction of the conical section.
To achieve the above, please refer to fig. 1 and fig. 2; the device of the present embodiment includes a track assembly 100, a first spreader arm 200 and a second spreader arm 300 parallel to each other. The first spreading arm 200 and the second spreading arm 300 respectively slide in the length direction of the track assembly 100, so that the cone joint is spread in the length direction of the track assembly 100.
Referring to fig. 3, the track assembly 100 of the present embodiment includes a back plate 110, an upper plate 120 and a lower plate 130 integrally formed with the back plate 110. An upper slide rail 121 is fixed to the upper plate 120, and a lower slide rail 131 is fixed to the lower plate 130. The rack 140 is fixed to the back plate 110 along the longitudinal direction at a portion between the upper rail 121 and the lower rail 131.
Referring to fig. 4 and 6, the first spreading arm 200 and the second spreading arm 300 of the present embodiment have the same structure, and thus only the structure of the first spreading arm 200 will be described in the present embodiment. The first distraction arm 200 comprises a traverse block 210, the traverse block 210 is detachably connected with an operation plate 220 through a bolt, the operation plate 220 is provided with a through rotating shaft 242 hole, the rotating shaft 242 hole is connected with a rotating shaft 242 through a bearing, one end of the rotating shaft 242 penetrates through the traverse block 210 and then is coaxially fixed with a gear 241, the other end of the rotating shaft 242 is coaxially fixed with a manual wheel 243, and the gear 241 is meshed with the rack 140.
In some embodiments, the blades of the first and second spreader arms 200, 300 are curved outwardly in an outwardly offset splay configuration.
Referring to fig. 5 and 6, the traverse block 210 of the present embodiment has two upper sliders 250 and two lower sliders 260 fixed to the side surfaces of the rack 140 by bolts. The two upper sliders 250 are respectively engaged with the upper slide rail 121, and the two lower sliders 260 are respectively engaged with the lower slide rail 131.
Through the above scheme, after the manual wheel 243 in the embodiment is shifted, the gear 241 is displaced relative to the rack 140, and the traverse block 210 can only be displaced along the length direction of the rack 140 under the cooperation of the upper slide rail 121, the lower slide rail 131, the upper slide block 250 and the lower slide block 260. The first brace 400, which is fixed to the traverse block 210, can be relatively far apart or close to the second brace. Because the gear 241 and the rack 140 are engaged with each other to have a certain self-locking feature, the first support rod 400 and the second support rod can support the conical section continuously and stably to provide an operation space for medical staff. Meanwhile, the cooperation of the gear 241 and the rack 140 can accurately control the displacement stroke of the first distraction arm 200 relative to the track assembly 100, so as to realize accurate control of distraction amplitude.
Referring to fig. 4, the other side end of the operating plate 220 opposite to the second spreading arm 300 is provided with a pad 230 that is bolted to the traverse block 210. Elastic protrusions 160 are respectively fixed to the side plates 150 at both ends of the back plate 110, and the elastic protrusions 160 face the spacers 230. When the medical staff shifts the hand wheel 243 to make the displacement of the first distraction arm 200 along the rack 140 reach the maximum distance, the elastic protrusion 160 will prop against the cushion block 230, and the first brace 400 and the second brace are placed to excessively distract the taper joint, which causes injury to the patient.
Referring to fig. 7, in the traverse block 210 of the present embodiment, the first stay 400 is detachably fixed by a bolt, and the length direction of the first stay 400 is perpendicular to the length direction of the rack 140. The first stay bar 400 is provided with a wiring groove 410 for laying illumination optical fibers along the length direction, the other end of the first stay bar 400 opposite to the transverse moving block 210 is provided with a light emitting hole 420 communicated with the wiring groove 410, and the light emitting hole 420 penetrates through two sides of the first stay bar 400.
Through the above scheme, the first strut of this embodiment is externally connected with the illumination optical fiber through the wiring groove 410, and the tail end of the illumination optical fiber extends into the light emitting hole 420 through the wiring groove 410 to provide the illumination light source to the two sides of the first strut.
Referring to fig. 7, transparent covers 430 are disposed on two sides of the first supporting rod 400, and the transparent covers 430 are used for sealing the wiring slots 410 and the light emitting holes 420, so as to prevent blood or human tissue from entering the wiring slots 410 or the light emitting holes 420, thereby causing unnecessary cleaning burden to medical staff.
The first stay bar 400 of this embodiment is disposed in an inward arc manner with respect to one side surface of the second stay bar, and an arc plate 440 bent outward is fixed to the other side surface. Then the arc-shaped plate 440 can peel away the human tissue in the direction away from the first stay 400 in the process that the first stay 400 and the second stay prop open the taper; the inner arc arrangement of the first stay bar 400 can enlarge the operation space for medical staff as much as possible.
In some embodiments, please refer to fig. 8. The transverse moving part is fixed with a rectangular block 450, the first stay bar 400 is provided with a regular dodecagonal groove 270, the regular dodecagonal groove 270 is fixed with the rectangular block 450 through any two opposite inner side surfaces, and the first stay bar 400 is fixed with the transverse moving part through bolts.
In some embodiments, the operation panel 220 is fixed with a motor, and a motor shaft of the motor is fixed coaxially with the rotation shaft 242 instead of the manual wheel 243. Medical personnel can realize strutting and keeping the taper joint through external terminal driving motor then.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. A lumbar vertebra posterior surgery distraction device, which is used for lumbar vertebra posterior surgery and is characterized in that,
the device comprises:
the rail assembly is provided with a back plate, a rack and a sliding rail which are fixed with the back plate along the length direction;
the first opening arm comprises a gear meshed with the rack and a transverse moving part rotationally connected with the gear, the gear is coaxially fixed with a manual wheel, and the transverse moving part is fixed with a first support rod and a sliding block sliding in the sliding rail;
the second opening arm is provided with a fixed block, the fixed block is fixed with one end of the slide rail, and the fixed block is provided with a second support rod parallel to the first support rod;
the transverse moving part is detachably connected with the first support rod;
the transverse moving part is fixed with a rectangular block, the first support rod is provided with a regular dodecagonal groove, the rectangular block is fixed on the regular dodecagonal groove through any two opposite inner side surfaces of the regular dodecagonal groove, and the first support rod is fixed with the transverse moving part through a screw.
2. The lumbar posterior surgery distractor device of claim 1,
the second spreading arm and the first spreading arm have the same structure.
3. The lumbar posterior surgery distractor device of claim 1,
an upper plate is fixed at the upper end of the back plate, a lower plate is fixed at the lower end of the back plate, an upper slide rail is fixed on the upper plate along the length direction of the back plate, and a lower slide rail is fixed on the lower plate along the length direction of the back plate;
the transverse moving block is fixed with an upper sliding block and a lower sliding block, the upper sliding block slides on the upper sliding rail, and the lower sliding block slides on the lower sliding rail.
4. The lumbar posterior surgery distractor device of claim 1,
elastic bodies are respectively fixed at two ends of the back plate, and one end of each elastic body faces the transverse moving part.
5. The lumbar posterior surgery distractor device of claim 1,
the first supporting rod is provided with a wiring groove along the length direction, the first supporting rod is opposite to the other end of the transverse moving portion and is provided with at least one light emitting hole communicated with the wiring groove, the light emitting hole penetrates through two side faces of the first supporting rod, the wiring groove is provided with at least one lighting optical fiber, the tail end of the lighting optical fiber extends into the light emitting hole, and two side faces of the first supporting rod are respectively provided with a transparent cover covering the light emitting hole.
6. The lumbar posterior surgery distractor device of claim 1,
and an arc-shaped plate which is bent outwards is fixed on the other side surface of the first support rod relative to the second support rod.
7. The lumbar posterior surgery distractor device of claim 1,
the first supporting rod is arranged in an inner arc mode relative to the side face of the second supporting rod.
CN201811519400.8A 2018-12-12 2018-12-12 Lumbar vertebra posterior surgery distraction device Active CN109431560B (en)

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Publication number Priority date Publication date Assignee Title
CN112294375A (en) * 2020-11-06 2021-02-02 王学庆 Incision traction device for orthopedic surgery
CN115054359A (en) * 2022-08-18 2022-09-16 首都医科大学附属北京潞河医院 Atlantoaxial lateral joint ventral side spreader and use method thereof

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JPH09299373A (en) * 1996-05-09 1997-11-25 Kentsu Medeiko Kk Rib spreader
US8100828B2 (en) * 2002-11-23 2012-01-24 George Frey Distraction and retraction system for spinal surgery
US7927336B2 (en) * 2005-02-08 2011-04-19 Rasmussen G Lynn Guide assembly for guiding cuts to a femur and tibia during a knee arthroplasty
FR2914177B1 (en) * 2007-04-02 2010-03-26 Landanger MULTIFUNCTION STERNAL RETRACTOR
US9113853B1 (en) * 2011-08-31 2015-08-25 Nuvasive, Inc. Systems and methods for performing spine surgery
CN105559869B (en) * 2016-02-06 2019-08-20 贺新宁 A kind of general percutaneous cervical arc root nail stick internal fixation system
CN206183310U (en) * 2016-07-29 2017-05-24 中国人民解放军第二军医大学 Sternal distraction device
CN106580475A (en) * 2016-11-25 2017-04-26 东莞市天合机电开发有限公司 Robot for laparoscopic surgery
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CN206924094U (en) * 2017-02-04 2018-01-26 中国人民解放军***南京总医院 A kind of improved minimally invasive spine surgical drag hook
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Effective date of registration: 20200428

Address after: 330008 No. 1 Minde Road, Donghu District, Nanchang City, Jiangxi Province

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