CN111419418B - Titanium stick curvature protractor in thoracolumbar surgery - Google Patents
Titanium stick curvature protractor in thoracolumbar surgery Download PDFInfo
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- CN111419418B CN111419418B CN202010256235.2A CN202010256235A CN111419418B CN 111419418 B CN111419418 B CN 111419418B CN 202010256235 A CN202010256235 A CN 202010256235A CN 111419418 B CN111419418 B CN 111419418B
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- 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
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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
- A61B17/56—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, setting implements or the like
- 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 ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
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- 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
- A61B2090/067—Measuring instruments not otherwise provided for for measuring angles
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Abstract
The invention relates to a titanium rod curvature protractor in thoracolumbar surgery, which comprises a first part, a second part and a scale turntable, wherein the first part comprises a first cross arm and a first vertical arm; the first cross arm is provided with a disc sliding groove extending along the length direction of the first cross arm; an auxiliary chute is arranged on the first vertical arm; the second part comprises a second cross arm and a second vertical arm; the scale turntable is fixed at the end part of the free end of the second cross arm through a disc nut; the disc nut penetrates through the disc sliding groove and fixes the scale turntable at a proper position in the disc sliding groove; a fixed component chute is arranged on the second vertical arm; a titanium bar clamping component is arranged in the auxiliary sliding chute, a titanium bar fixing component is arranged in the fixing component sliding chute, and the titanium bar fixing component can slide along the fixing component sliding chute and can be fixed at a proper position in the fixing component sliding chute; the titanium rod is fixed between the titanium rod clamping assembly and the titanium rod fixing assembly, and the bending angle of the titanium rod is read through the scales on the scale turntable.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a titanium rod curvature protractor in thoracolumbar surgery.
Background
The curvature of Lumbar Lordosis (LL) is closely related to the quality of life of patients with degenerative disease of the lumbar spine, deformity after surgery, which has been confirmed in many studies. The degree of lumbar lordosis reconstruction that is suitable has been a focus of research in the past. The pelvic incidence angle (PI) was proposed by Duval-Beaupre et al in 1992 as representing the sagittal morphology of the pelvis, which remains unchanged after adulthood. The pelvis incident angle PI and the curvature LL of lumbar lordosis have close correlation, and the Western scholar Duval-Beaup re provides a simplified approximate corresponding relation of LL +/-9 degrees, so that the pelvis incident angle PI and the curvature LL are used as the reference for reconstructing the lumbar lordosis in the operation, have the characteristics of simplicity and effectiveness, and are widely applied to reconstruction of the lordosis in the lumbar operation by scholars at home and abroad. However, due to the difference in the skeletal morphological development between Chinese population and Western population, the reconstruction fitting standard of Western population is not suitable for Chinese.
The subject group of the applicant of the application explores the characteristics of the Chinese spine-pelvis sagittal line sequence and the fitting relation of the lumbar lordosis curvature of young Chinese people and middle-aged and old people in the past 6 years, further explores the appropriate range of lumbar degenerative disease and deformed lumbar reconstruction, and provides guidance for reconstructing the lumbar lordosis curvature in the operation.
In the thoracolumbar spine fixation fusion operation, the pre-bent titanium alloy fixing rod is required to be connected with the pedicle screw, and the curvature of the pre-bent titanium alloy fixing rod is the curvature of thoracolumbar spine reconstruction of the postoperative operation section. In the prior art, the pre-bending curvature of the titanium rod in the operation can not be accurately measured, and can only be estimated by visual inspection experience, and whether the pre-bending curvature reaches the range of the expected reconstruction of the operation can only be verified by the measurement result after the operation. Therefore, there is a need in the art for an intraoperative measuring instrument that performs accurate measurements.
Disclosure of Invention
The invention aims to provide a titanium rod curvature protractor in thoracolumbar surgery, and aims to solve the technical problem of how to accurately measure the bending angle of a titanium rod in thoracolumbar surgery.
In order to achieve the aim, the invention provides a titanium rod curvature protractor in thoracolumbar surgery, which comprises a first part, a second part and a scale turntable, wherein the first part comprises a first cross arm and a first vertical arm, and the first cross arm and the first vertical arm are intersected to form an L-shaped first part; the first cross arm is provided with a disc sliding groove extending along the length direction of the first cross arm; the first vertical arm is provided with an auxiliary sliding chute extending along the length direction of the first vertical arm; the second part comprises a second cross arm and a second vertical arm, and the second cross arm and the second vertical arm are intersected and form an L-shaped second part; the scale turntable is fixed at the end part of the free end of the second cross arm through a disc nut; the disc nut penetrates through the disc sliding groove and fixes the scale turntable at a proper position in the disc sliding groove; the second vertical arm is provided with a fixed assembly sliding groove extending along the length direction of the second vertical arm; a titanium bar clamping assembly is arranged in the auxiliary sliding chute, can slide along the auxiliary sliding chute and can be fixed at a proper position in the auxiliary sliding chute; a titanium bar fixing component is arranged in the fixing component sliding groove, can slide along the fixing component sliding groove and can be fixed at a proper position in the fixing component sliding groove; the titanium rod is fixed between the titanium rod clamping assembly and the titanium rod fixing assembly, and the bending angle of the titanium rod is read through the scales on the scale turntable.
The bending angle of the titanium rod read out through the scales on the scale turntable is as follows: when the position of the disc nut in the disc chute, the position of the titanium bar clamping component in the auxiliary chute and the position of the titanium bar fixing component in the fixing component chute are fixed, the scale on the scale turntable corresponding to the disc chute is the bending angle of the titanium bar.
The position of the scale turntable in the disc chute is adjusted by the disc nut according to the length of the titanium rod.
The titanium bar clamping component comprises a titanium bar clamping groove, a clamping screw hole and a clamping groove fixing nut, wherein the clamping screw hole is formed in the bottom of the titanium bar clamping component; the clamping groove fixing nut penetrates through the auxiliary sliding groove and is screwed into the clamping screw hole, so that the titanium bar clamping assembly is fixed on the auxiliary sliding groove.
The width of the titanium bar clamping groove is 7 mm.
The diameter of the nut of the clamping groove fixing nut is larger than the width of the auxiliary sliding groove.
The titanium bar fixing component comprises a titanium bar fixing groove, a titanium bar fixing nut and a component fixing nut, wherein a titanium bar fixing screw hole is formed in the top of the titanium bar fixing groove, a component fixing screw hole is formed in the bottom of the titanium bar fixing groove, the titanium bar fixing nut is screwed into the titanium bar fixing screw hole, and the depth of the titanium bar fixing nut screwed into the titanium bar fixing screw hole is determined according to the diameter of a titanium bar.
The component fixing nut penetrates through the fixing component sliding groove and is screwed into the component fixing screw hole, and therefore the titanium rod fixing component is fixed on the fixing component sliding groove.
The width of the titanium bar fixing groove is 7mm, and the titanium bar fixing groove can be suitable for titanium bars with all widths on the market.
Preferably, the position of the titanium bar clamping assembly in the auxiliary sliding groove and the position of the titanium bar fixing assembly in the fixing assembly sliding groove are adjusted according to the length of the titanium bar.
Advantageous effects
Compared with the prior art, the invention has the beneficial effects that: the titanium rod curvature protractor in the thoracolumbar surgery is designed according to a clinically general Cobb angle measuring method, can be adjusted according to the actual diameter and length of the titanium rod in the surgery, is simple in device, and can be conveniently used in the surgery.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a schematic structural diagram of the titanium rod curvature protractor of the present invention.
Fig. 2 is a schematic structural view of the left side member of the present invention.
Fig. 3 is a schematic structural view of the left fixing member of the present invention.
Fig. 4 is a schematic view of the structure of the right side member of the present invention.
Fig. 5 is a schematic structural view of the right fixing member of the present invention.
FIG. 6 is a schematic structural view of a protractor according to the present invention, wherein the bending angle of the titanium rod is 10 degrees.
Fig. 7 is a schematic structural diagram of a protractor with a bending angle of 20 degrees of a titanium rod according to the invention.
Detailed Description
The present invention is described in more detail below to facilitate an understanding of the present invention.
As shown in fig. 1 to 7, the titanium rod curvature protractor in thoracolumbar surgery of the present invention comprises a first component 1 (left component), a second component 2 (right component) and a scale dial 3, wherein the first component comprises a first cross arm 11 and a first vertical arm 12, and the first cross arm 11 and the first vertical arm 12 intersect to form an L-shaped first component; the first cross arm is provided with a disc sliding groove 14 extending along the length direction of the first cross arm; the first vertical arm is provided with an auxiliary sliding chute 13 extending along the length direction of the first vertical arm; the second part comprises a second cross arm 21 and a second vertical arm 22, and the second cross arm 21 and the second vertical arm 22 intersect to form an L-shaped second part; the scale turntable is fixed at the end part of the free end of the second cross arm 21 through a disc nut 24; the disc nut 24 passes through the disc chute 14 and fixes the scale dial at a proper position in the disc chute; scales for representing angles are arranged on the surface of the scale turntable; the second vertical arm 22 is provided with a fixed assembly sliding groove 23 extending along the length direction of the second vertical arm; a titanium bar clamping component 4 (a left fixing component) is arranged in the auxiliary sliding chute 13, and the titanium bar clamping component 4 can slide along the auxiliary sliding chute and can be fixed at a proper position in the auxiliary sliding chute; a titanium bar fixing component 5 (a right fixing part) is arranged in the fixing component sliding groove 23, and the titanium bar fixing component 5 can slide along the fixing component sliding groove and can be fixed at a proper position in the fixing component sliding groove; the titanium rod is fixed between the titanium rod clamping component 4 and the titanium rod fixing component 5, and the bending angle of the titanium rod is read through the scales on the scale turntable.
The bending angle of the titanium rod read out through the scales on the scale turntable is as follows: when the position of the disc nut 24 in the disc sliding groove 14, the position of the titanium rod clamping component 4 in the auxiliary sliding groove 13 and the position of the titanium rod fixing component 5 in the fixing component sliding groove 23 are fixed, the scale on the scale turntable corresponding to the disc sliding groove 14 is the bending angle of the titanium rod.
The position of the scale turntable in the disc chute is adjusted by the disc nut according to the length of the titanium rod.
As shown in fig. 3, the titanium bar clamping component 4 includes a titanium bar clamping groove 41, a clamping screw hole 42 arranged at the bottom of the titanium bar clamping component, and a clamping groove fixing nut 43; the clamping groove fixing nut penetrates through the auxiliary sliding groove 13 and is screwed into the clamping screw hole 42, so that the titanium bar clamping component 4 is fixed on the auxiliary sliding groove 13.
The width of the titanium bar clamping groove is 7 mm.
The diameter of the nut of the slot fixing nut 43 is larger than the width of the auxiliary chute 13.
As shown in fig. 5, the titanium rod fixing component 5 includes a titanium rod fixing groove 51, a titanium rod fixing nut 54 and a component fixing nut 55, the top of the titanium rod fixing groove is provided with a titanium rod fixing screw hole 52, the bottom of the titanium rod fixing groove is provided with a component fixing screw hole 53, the titanium rod fixing nut 54 is screwed into the titanium rod fixing screw hole 52, and the depth of screwing the titanium rod fixing nut 54 into the titanium rod fixing screw hole 52 is determined according to the diameter of the titanium rod.
The component fixing nut 55 passes through the fixing component slide groove 23 and is screwed into the component fixing screw hole 53, thereby fixing the titanium rod fixing component 5 to the fixing component slide groove 23.
The width of the titanium bar fixing groove is 7mm, and the titanium bar fixing groove can be suitable for titanium bars with all widths on the market.
Preferably, the position of the titanium bar clamping assembly 4 in the auxiliary sliding groove 13 and the position of the titanium bar fixing assembly 5 in the fixing assembly sliding groove 23 are adjusted according to the length of the titanium bar.
In the titanium rod curvature protractor in thoracolumbar surgery, the assembly fixing nut 55 is used for fixing the titanium rod fixing assembly 5 to the fixing assembly sliding groove 23, and the position of the titanium rod fixing assembly 5 in the fixing assembly sliding groove 23 can be adjusted in a loosening manner.
When the device is used, one end of a titanium rod to be measured is inserted into the titanium rod fixing groove 51, the depth of screwing the titanium rod fixing nut 54 into the titanium rod fixing screw hole 52 is determined according to the diameter of the titanium rod, and if the diameter of the titanium rod is large, the depth of screwing the titanium rod fixing nut 54 into the titanium rod fixing screw hole 52 is shallow; if the diameter of the titanium rod is small, the depth to which the titanium rod fixing nut 54 is screwed into the titanium rod fixing screw hole 52 is deep. The component fixing nut 55 passes through the fixing component slide groove 23 and is screwed into the component fixing screw hole 53, thereby fixing the titanium rod fixing component 5 to the fixing component slide groove 23. The other end of the titanium rod is inserted into the titanium rod clamping groove 41, the clamping groove fixing nut 43 is loosened, and the position of the titanium rod clamping component 4 on the auxiliary sliding groove 13 is adjusted. At this moment disc nut 24 keeps not hard up for disc nut 24 and scale carousel 3 can slide along disc spout 14, and draw-in groove fixation nut 43 also keeps not hard up simultaneously, and titanium stick joint subassembly 4 can slide along supplementary spout 13, and titanium stick joint subassembly 4 and scale carousel 3 slide simultaneously and adjust, and scale carousel 3 when sliding to suitable position, titanium stick joint subassembly 4, the position of first part 1 and second part 2 remain stable, tighten draw-in groove fixation nut 43 and disc nut 24 this moment, and the scale on the scale carousel that disc spout 14 is right is the bending angle of titanium stick promptly.
The foregoing describes preferred embodiments of the present invention, but is not intended to limit the invention thereto. Modifications and variations of the embodiments disclosed herein may be made by those skilled in the art without departing from the scope and spirit of the invention.
Claims (9)
1. The titanium rod curvature protractor in the thoracolumbar surgery is characterized by comprising a first component, a second component and a scale turntable, wherein the first component comprises a first cross arm and a first vertical arm which are intersected to form an L-shaped first component; the first cross arm is provided with a disc sliding groove extending along the length direction of the first cross arm; the first vertical arm is provided with an auxiliary sliding chute extending along the length direction of the first vertical arm; the second part comprises a second cross arm and a second vertical arm, and the second cross arm and the second vertical arm are intersected and form an L-shaped second part; the scale turntable is fixed at the end part of the free end of the second cross arm through a disc nut; the disc nut penetrates through the disc sliding groove and fixes the scale turntable at a proper position in the disc sliding groove; the second vertical arm is provided with a fixed assembly sliding groove extending along the length direction of the second vertical arm; a titanium bar clamping assembly is arranged in the auxiliary sliding chute, can slide along the auxiliary sliding chute and can be fixed at a proper position in the auxiliary sliding chute; a titanium bar fixing component is arranged in the fixing component sliding groove, can slide along the fixing component sliding groove and can be fixed at a proper position in the fixing component sliding groove; the titanium rod is fixed between the titanium rod clamping assembly and the titanium rod fixing assembly, and the bending angle of the titanium rod is read through the scale on the scale turntable; the titanium bar clamping component comprises a titanium bar clamping groove, a clamping screw hole and a clamping groove fixing nut, wherein the clamping screw hole is formed in the bottom of the titanium bar clamping component; the clamping groove fixing nut penetrates through the auxiliary sliding groove and is screwed into the clamping screw hole, so that the titanium bar clamping assembly is fixed on the auxiliary sliding groove.
2. The titanium rod curvature protractor in thoracolumbar surgery according to claim 1, wherein the reading of the bending angle of the titanium rod through the scale on the scale dial is specifically: when the position of the disc nut in the disc chute, the position of the titanium bar clamping component in the auxiliary chute and the position of the titanium bar fixing component in the fixing component chute are fixed, the scale on the scale turntable corresponding to the disc chute is the bending angle of the titanium bar.
3. The titanium rod curvature protractor in thoracolumbar surgery as recited in claim 1, wherein the disc nut adjusts the position of the scale dial in the disc chute according to the length of the titanium rod.
4. The titanium rod curvature protractor in thoracolumbar surgery of claim 1, wherein the width of the titanium rod slot is 7 mm.
5. The titanium rod curvature protractor in thoracolumbar surgery as recited in claim 1, wherein the diameter of the nut of the slot fixing nut is larger than the width of the auxiliary chute.
6. The titanium rod curvature protractor in thoracolumbar surgery according to claim 1, wherein the titanium rod fixing assembly comprises a titanium rod fixing groove, a titanium rod fixing nut and an assembly fixing nut, a titanium rod fixing screw hole is formed in the top of the titanium rod fixing groove, an assembly fixing screw hole is formed in the bottom of the titanium rod fixing groove, the titanium rod fixing nut is screwed into the titanium rod fixing screw hole, and the depth of the titanium rod fixing nut screwed into the titanium rod fixing screw hole is determined according to the diameter of the titanium rod.
7. The titanium rod curvature protractor in thoracolumbar surgery as recited in claim 6, wherein the assembly fixing nut is passed through the fixing assembly sliding groove and screwed into the assembly fixing screw hole, thereby fixing the titanium rod fixing assembly on the fixing assembly sliding groove.
8. The titanium rod curvature protractor in thoracolumbar surgery of claim 6, wherein the width of the titanium rod fixing groove is 7 mm.
9. The titanium rod curvature protractor in thoracolumbar surgery as recited in any one of claims 1-8, wherein the position of the titanium rod clamping assembly in the auxiliary sliding groove and the position of the titanium rod fixing assembly in the fixing assembly sliding groove are adjusted according to the length of the titanium rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010256235.2A CN111419418B (en) | 2020-04-02 | 2020-04-02 | Titanium stick curvature protractor in thoracolumbar surgery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010256235.2A CN111419418B (en) | 2020-04-02 | 2020-04-02 | Titanium stick curvature protractor in thoracolumbar surgery |
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| Publication Number | Publication Date |
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| CN111419418A CN111419418A (en) | 2020-07-17 |
| CN111419418B true CN111419418B (en) | 2021-02-19 |
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| CN202010256235.2A Active CN111419418B (en) | 2020-04-02 | 2020-04-02 | Titanium stick curvature protractor in thoracolumbar surgery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113456202A (en) * | 2021-03-23 | 2021-10-01 | 上海长征医院 | Accurate measurement matching device before spinal titanium rod is implanted |
Citations (5)
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|---|---|---|---|---|
| CN2928022Y (en) * | 2006-03-28 | 2007-08-01 | 山东省立医院 | Angle measurer for thoracolumbar vertebra fracture vertebral arch pedicle nail |
| CN201088615Y (en) * | 2007-10-19 | 2008-07-23 | 崔学文 | Standaway gear spinal reducible fixture device |
| CN205607316U (en) * | 2016-05-09 | 2016-09-28 | 遵义医学院附属医院 | Cobb angular measurement measuring tape |
| CN206239485U (en) * | 2016-08-16 | 2017-06-13 | 南阳市第二人民医院 | Puncture needle fixer under a kind of color ultrasound guidance |
| US10004609B2 (en) * | 2016-09-23 | 2018-06-26 | Warsaw Orthopedic, Inc. | Surgical instrument and method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201115669Y (en) * | 2007-09-06 | 2008-09-17 | 李明 | Vertebral column multifunctional measuring instrument |
| CN201088623Y (en) * | 2007-10-17 | 2008-07-23 | 徐荣明 | Position device for the cervical pedicle for screw placement |
| US20140107659A1 (en) * | 2012-10-12 | 2014-04-17 | Alphatec Spine, Inc. | In situ rod measuring instrument and method of use |
| CN203458473U (en) * | 2013-09-05 | 2014-03-05 | 张家富 | Radian measuring instrument for connecting rod of screw-rod system in orthopedics department |
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2020
- 2020-04-02 CN CN202010256235.2A patent/CN111419418B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2928022Y (en) * | 2006-03-28 | 2007-08-01 | 山东省立医院 | Angle measurer for thoracolumbar vertebra fracture vertebral arch pedicle nail |
| CN201088615Y (en) * | 2007-10-19 | 2008-07-23 | 崔学文 | Standaway gear spinal reducible fixture device |
| CN205607316U (en) * | 2016-05-09 | 2016-09-28 | 遵义医学院附属医院 | Cobb angular measurement measuring tape |
| CN206239485U (en) * | 2016-08-16 | 2017-06-13 | 南阳市第二人民医院 | Puncture needle fixer under a kind of color ultrasound guidance |
| US10004609B2 (en) * | 2016-09-23 | 2018-06-26 | Warsaw Orthopedic, Inc. | Surgical instrument and method |
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