CN113456202A - Accurate measurement matching device before spinal titanium rod is implanted - Google Patents
Accurate measurement matching device before spinal titanium rod is implanted Download PDFInfo
- Publication number
- CN113456202A CN113456202A CN202110306118.7A CN202110306118A CN113456202A CN 113456202 A CN113456202 A CN 113456202A CN 202110306118 A CN202110306118 A CN 202110306118A CN 113456202 A CN113456202 A CN 113456202A
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- Prior art keywords
- support arm
- spinal
- length
- titanium
- rod
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000005259 measurement Methods 0.000 title claims abstract description 21
- 238000002513 implantation Methods 0.000 claims abstract description 14
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 11
- 239000010936 titanium Substances 0.000 claims abstract description 11
- 210000004872 soft tissue Anatomy 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 210000003205 muscle Anatomy 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 208000008035 Back Pain Diseases 0.000 description 1
- 208000008930 Low Back Pain Diseases 0.000 description 1
- 208000002193 Pain Diseases 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 210000002517 zygapophyseal joint Anatomy 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
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7049—Connectors, not bearing on the vertebrae, for linking longitudinal elements together
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
- A61B2090/061—Measuring instruments not otherwise provided for for measuring dimensions, e.g. length
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Pathology (AREA)
- Surgical Instruments (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
本发明涉及一种脊柱钛棒植入前精确测量匹配装置，包括两个支臂和螺栓，所述支臂呈倒L型，所述支臂的上横部侧面开设沿长度方向延伸的长槽孔，所述支臂的下竖部底端延伸出用于插入固定至脊椎螺钉头部的直凸杆；所述螺栓的直径与所述长槽孔宽度匹配，所述螺栓通过依次穿入两个支臂的长槽孔并在螺栓尾端螺接螺帽压紧固定两个支臂；所述支臂的下竖部底端设便于捏持的增宽部，所述增宽部沿支臂的侧面平面延伸。本发明的有益效果是能直接实现钛棒待剪裁长度的测量，排除脊椎螺钉的头尾倾、外向螺钉尾叶摆动、软组织遮挡等因素对模棒长度的判断带来的影响。
The invention relates to a precise measurement and matching device for spinal titanium rods before implantation, which comprises two support arms and bolts. The bottom end of the lower vertical part of the support arm extends out of a straight convex rod for inserting and fixing to the head of the vertebral screw; the diameter of the bolt matches the width of the long slot hole, and the bolt passes through the two holes in turn. The long slot holes of each support arm are screwed with nuts at the tail ends of the bolts to press and fix the two support arms; the bottom end of the lower vertical part of the support arm is provided with a widened part for easy pinching, and the widened part is arranged along the support The lateral plane of the arm extends. The invention has the beneficial effects that the measurement of the length of the titanium rod to be cut can be directly realized, and the influence of factors such as head-caudal inclination of the vertebral screw, swinging of the caudal lobe of the outward screw, soft tissue occlusion and other factors on the judgment of the die rod length can be eliminated.
Description
Technical Field
The invention relates to a neurosurgery and spinal surgery surgical instrument, in particular to a device for accurately measuring and matching a spinal titanium rod before implantation.
Background
In the prior art of spinal surgery, the length of measuring the titanium stick can only be judged according to experience under the operator looks directly at, perhaps measures the approximate length of titanium stick through the mold stick, because the sheltering from of soft tissue such as muscle, the swing of universal nut tail leaf to and do not consider the head slope and the tail slope of screw, the length deviation of the titanium stick according to the mold stick measurement is great, leads to the length of the titanium stick of can't cutting out according to patient's actual conditions individuation in the art. The titanium rod cut according to the mold rod is easy to loose the nut due to too short, and the titanium rod is broken and falls off; or is susceptible to overlong impact on the zygapophyseal joint of adjacent segments, resulting in pain and accelerated degeneration. In addition, the mold rod needs to be placed in a screw cap during measurement, the stripper is used for blocking off soft tissues such as muscles, the two ends of the mold rod are fully exposed, the soft tissues can be damaged in the exposure process, and postoperative intractable low back pain, fever and the like are caused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and solve the problem of measuring the length of a titanium rod in spinal surgery.
In order to achieve the purpose, the invention provides a precise measurement matching device before the implantation of a spinal titanium rod, which comprises two support arms and a bolt, wherein the support arms are in an inverted L shape, the side surface of the upper transverse part of each support arm is provided with a long slotted hole extending along the length direction, and the bottom end of the lower vertical part of each support arm extends out of a straight convex rod used for being inserted and fixed to the head part of a spinal screw; the diameter of the bolt is matched with the width of the long slotted hole, and the bolt sequentially penetrates through the long slotted holes of the two support arms and is tightly pressed and fixed with the nut in a threaded mode at the tail end of the bolt.
The upper portion of the support arm of the inverted L shape is transversely extended for the upper transverse portion, the lower portion of the support arm of the inverted L shape is vertically extended for the lower vertical portion, and the upper transverse portion and the lower vertical portion of the support arm are perpendicular to each other. The cross section of the straight convex rod is matched with the target vertebral screw, so that the straight convex rod and the target vertebral screw can be fixed. The upper transverse part and the lower vertical part of the support arms are positioned on the same plane, and the side surfaces of the two support arms, which are provided with the long slotted holes, are parallel to the plane. The slotted hole penetrates through the support arm. The term "the diameter of the bolt is matched with the width of the slotted hole" means that the bolt head can be abutted against the side face of the support arm while the bolt in the prior art can smoothly penetrate into the slotted hole.
Preferably, the side surface of the upper transverse part of the support arm, which is provided with the long slot hole, is provided with a convex pattern for increasing friction force.
The convex lines referred to herein may be in the form of transverse lines, point-like protrusions, frosted surfaces, etc.
Preferably, the bottom end of the lower vertical part of the support arm is provided with a widened part which is convenient to hold, and the widened part extends along the side plane of the support arm.
The widening part is flat.
Preferably, the widened portion is widened by 3mm at both sides and has a length of 1 cm.
The length direction of the widened part is perpendicular to the extending direction of the lower vertical part, and the widened part is a flat cuboid. The broadening of the broadening part is relative to the width of the lower vertical part.
Preferably, the bolt is a butterfly bolt.
Preferably, the underside of the bolt head is provided with a ridge for increasing friction.
Preferably, the nut is a butterfly nut.
Preferably, the length of the upper transverse part of the support arm is 10 cm; the length of the lower vertical part of the support arm is 15cm, the width is 1cm, and the thickness is 6 mm.
The structure that two types of falling L support arms cooperate can reduce the whole height of device, makes things convenient for the operation space to arrange. After the measurer is fixed to the head of the vertebra screw, the bolt and the nut are screwed at the crossed part of the long slotted hole, so that the two support arms are fixed. And taking out the fixed support arms, and measuring the distance between the bottom ends of the lower vertical parts of the two support arms to obtain the length of the titanium rod.
Through the design of the convex patterns, on one hand, the object is held and adjusted when being lifted, and on the other hand, the bolt and the nut are locked and then are stably and not slid at the side position of the support arm.
Through the design of widening portion, conveniently grip and angle modulation, the user of being convenient for carries out accurate control to the lower vertical part bottom of support arm. Meanwhile, the marking is easy to scratch on the widening part, and the measurement after the widening part is taken out is convenient.
The titanium rod installed in the wound is fixed at the head of the vertebral screw in the operation, and can exceed the target vertebral screw by 3mm in the vertebral direction generally; if the length exceeds the length, the articular processes and other structures of the non-operative segment can be touched; if the excess part is less than 3mm, the locking space is insufficient, and the titanium rod can slip out of the tail end of the locked screw after long-term movement.
The butterfly bolt and the butterfly nut can be arranged simultaneously or independently.
Through suitable support arm size setting, can let the caliber size minimize on the basis of guaranteeing the measurement demand.
The method has the advantages that the method can directly realize the measurement of the length of the titanium rod to be cut, and eliminate the influence of factors such as head and tail inclination of the vertebral screw, tail leaf swing of the outward screw, soft tissue shielding and the like on the judgment of the length of the mold rod.
Drawings
FIG. 1 is a general schematic view of a precise measurement and matching device of the present invention before implantation of a spinal titanium rod;
FIG. 2 is an exploded view of the assembled precision measuring and matching device of the present invention before implantation of a spinal titanium rod;
FIG. 3 is a schematic view of the bottom end of the support arm of the precise measurement matching device before the implantation of the spinal titanium rod of the present invention;
wherein:
1-arm 11-upper transverse part 111-long slotted hole
12-lower vertical part 13-widening part 14-straight convex rod
2-bolt 3-nut
Detailed Description
The invention is further described below with reference to the following figures and specific examples.
The device for accurately measuring and matching the titanium spinal rod before implantation shown in fig. 1 to 3 comprises two support arms 1 and a bolt 2, wherein each support arm 1 is in an inverted L shape, a long slotted hole 111 extending along the length direction is formed in the side surface of an upper transverse part 11 of each support arm 1, and a straight convex rod 14 used for being inserted and fixed to the head of a spinal screw is extended from the bottom end of a lower vertical part 12 of each support arm 1; the diameter of the bolt 2 is matched with the width of the long slotted hole 111, and the bolt 2 sequentially penetrates through the long slotted holes 111 of the two support arms 1 and is screwed with a nut 3 at the tail end of the bolt 2 to tightly press and fix the two support arms 1. The side of the upper cross part 11 of the arm 1, which is provided with a slotted hole, is provided with a frosted convex pattern for increasing friction, and the bottom side of the head of the bolt 2 is provided with a convex pattern for increasing friction (not shown, but the structure can be understood by those skilled in the art). The bottom end of the lower vertical part 12 of the arm 1 is provided with a flat widening 13 which is easy to grip, and the widening 13 extends along the side plane of the arm.
In the specific dimension, the length of the upper transverse part 11 of the support arm 1 is 10cm, the width is 10mm, the thickness is 6mm, the length of the upper slotted hole 111 is 8cm, and the width is 6 mm; the length of the lower vertical part 12 of the support arm 1 is 15cm, the width is 1cm, and the thickness is 6 mm. The widening 13 is widened by 3mm at both sides relative to the lower vertical part 12, and the length is 1 cm. The bolt 2 and the nut 3 are respectively a butterfly bolt and a butterfly nut. The straight convex rod 14 is a hexagonal protrusion, and the length and the diameter of the protrusion are the same as those of the groove at the head of the vertebral screw. The diameter of the butterfly bolt is 5mm, and the length of the butterfly bolt is 20 mm.
The use process comprises the following steps:
1. after the tail lobe of the head of the spinal screw is exposed, a straight convex rod 14 of a support arm 1 is directly inserted into a hexagonal groove of the head of the spinal screw until the support arm 1 does not swing;
2. in the same way, the straight convex rod 14 of the other support arm 1 is fixed;
3. jointing the long slotted holes 111 of the two support arms 1, and locking by matching butterfly bolts with nuts;
4. the measuring device is taken out as a whole, and the distance between the farthest points of the two widening parts 13 is measured, and the length is the length of the titanium rod. And then cutting the titanium rod according to the length, and then bending the titanium rod to install and lock the titanium rod.
The advantages of using this embodiment are:
1. compared with the prior art, the length of the titanium rod is measured by using a mold rod; the influence of the angle of the screw on the length of the titanium rod is considered, and the length of the titanium rod can be more finely cut.
2. The existing mold rod measurement needs to use a stripper to block soft tissues such as muscles and the like, so that the visual field is fully exposed, and the soft tissues are possibly damaged. This embodiment requires only the soft tissue above the nut to be kept off.
3. When the traditional mold rod is used for measurement, the tail end of the mold rod is judged inaccurately because of the swinging of the tail blade of the universal screw, so that the measurement error of the length of the mold rod is large. The straight convex rod 14 of the embodiment is directly inserted into the groove at the head part of the vertebral screw, the length of the titanium rod is not needed to be judged through the edge of the tail lobe, and the influence caused by the swinging of the tail lobe of the universal screw is ignored.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the embodiments disclosed, but is capable of numerous equivalents and substitutions, all of which are within the scope of the invention as defined by the appended claims.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110306118.7A CN113456202A (en) | 2021-03-23 | 2021-03-23 | Accurate measurement matching device before spinal titanium rod is implanted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110306118.7A CN113456202A (en) | 2021-03-23 | 2021-03-23 | Accurate measurement matching device before spinal titanium rod is implanted |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113456202A true CN113456202A (en) | 2021-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110306118.7A Pending CN113456202A (en) | 2021-03-23 | 2021-03-23 | Accurate measurement matching device before spinal titanium rod is implanted |
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| CN (1) | CN113456202A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5092866A (en) * | 1989-02-03 | 1992-03-03 | Breard Francis H | Flexible inter-vertebral stabilizer as well as process and apparatus for determining or verifying its tension before installation on the spinal column |
| CN202304688U (en) * | 2011-10-20 | 2012-07-04 | 四川长虹电器股份有限公司 | Tin peak height detection device for wave soldering |
| US20120265212A1 (en) * | 2011-04-18 | 2012-10-18 | Warsaw Orthopedic, Inc | Apparatus and method for sizing a connecting element for positioning along a bone structure |
| US20140107659A1 (en) * | 2012-10-12 | 2014-04-17 | Alphatec Spine, Inc. | In situ rod measuring instrument and method of use |
| CN203873854U (en) * | 2014-03-30 | 2014-10-15 | 无锡市闻泰百得医疗器械有限公司 | Horizontal connecting device |
| US20140343561A1 (en) * | 2013-05-15 | 2014-11-20 | Ebi, Llc | Apparatus and method for measuring a length between implanted bone anchors |
| CN207718567U (en) * | 2018-01-12 | 2018-08-10 | 昆明冶金高等专科学校 | A kind of interesting push type think of political affairs teaching device for answering question being installed on desk |
| CN210447178U (en) * | 2019-04-23 | 2020-05-05 | 上海三友医疗器械股份有限公司 | Measuring assembly for pedicle screw spacing |
| CN111419418A (en) * | 2020-04-02 | 2020-07-17 | 北京大学第三医院（北京大学第三临床医学院） | A titanium rod curvature goniometer for thoracolumbar surgery |
-
2021
- 2021-03-23 CN CN202110306118.7A patent/CN113456202A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5092866A (en) * | 1989-02-03 | 1992-03-03 | Breard Francis H | Flexible inter-vertebral stabilizer as well as process and apparatus for determining or verifying its tension before installation on the spinal column |
| US20120265212A1 (en) * | 2011-04-18 | 2012-10-18 | Warsaw Orthopedic, Inc | Apparatus and method for sizing a connecting element for positioning along a bone structure |
| CN202304688U (en) * | 2011-10-20 | 2012-07-04 | 四川长虹电器股份有限公司 | Tin peak height detection device for wave soldering |
| US20140107659A1 (en) * | 2012-10-12 | 2014-04-17 | Alphatec Spine, Inc. | In situ rod measuring instrument and method of use |
| US20140343561A1 (en) * | 2013-05-15 | 2014-11-20 | Ebi, Llc | Apparatus and method for measuring a length between implanted bone anchors |
| CN203873854U (en) * | 2014-03-30 | 2014-10-15 | 无锡市闻泰百得医疗器械有限公司 | Horizontal connecting device |
| CN207718567U (en) * | 2018-01-12 | 2018-08-10 | 昆明冶金高等专科学校 | A kind of interesting push type think of political affairs teaching device for answering question being installed on desk |
| CN210447178U (en) * | 2019-04-23 | 2020-05-05 | 上海三友医疗器械股份有限公司 | Measuring assembly for pedicle screw spacing |
| CN111419418A (en) * | 2020-04-02 | 2020-07-17 | 北京大学第三医院（北京大学第三临床医学院） | A titanium rod curvature goniometer for thoracolumbar surgery |
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Application publication date: 20211001 |
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