CN112545723A - Intervertebral space height measuring device - Google Patents

Intervertebral space height measuring device Download PDF

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Publication number
CN112545723A
CN112545723A CN202011560428.3A CN202011560428A CN112545723A CN 112545723 A CN112545723 A CN 112545723A CN 202011560428 A CN202011560428 A CN 202011560428A CN 112545723 A CN112545723 A CN 112545723A
Authority
CN
China
Prior art keywords
test mold
slider
intervertebral space
cover
marking
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Granted
Application number
CN202011560428.3A
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Chinese (zh)
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CN112545723B (en
Inventor
赵晓阳
申春林
范立堃
张涛
贾祥勇
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Beijing Zhong An Tai Hua Science & Technology Co ltd
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Beijing Zhong An Tai Hua Science & Technology Co ltd
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Application filed by Beijing Zhong An Tai Hua Science & Technology Co ltd filed Critical Beijing Zhong An Tai Hua Science & Technology Co ltd
Priority to CN202011560428.3A priority Critical patent/CN112545723B/en
Publication of CN112545723A publication Critical patent/CN112545723A/en
Application granted granted Critical
Publication of CN112545723B publication Critical patent/CN112545723B/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4684—Trial or dummy prostheses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/442—Intervertebral or spinal discs, e.g. resilient

Abstract

The application relates to an intervertebral space height measuring device belongs to the medical instrument field, includes: a test mold upper cover and a test mold lower cover; one end of the driving rod penetrates through the lower test mold cover and can rotate relative to the lower test mold cover; the linkage assembly is movably connected with the driving rod and the test mold upper cover and can drive the test mold upper cover to be close to or far away from the test mold lower cover under the driving of the driving rod; a holding rod fixedly connected with the lower cover of the test mold is sleeved outside the driving rod, and a marking sliding block is sleeved at one end of the holding rod, which is far away from the lower cover of the test mold; a handle is arranged at one end of the driving rod, which is far away from the lower cover of the test mold, and the handle can drive the marking slide block to slide along the axial direction of the holding rod; the outside of the marking sliding block is provided with an indicating sleeve, the indicating sleeve is fixedly connected with the holding rod, and the marking sliding block is matched with the indicating sleeve to display the height of the intervertebral space. The application provides an intervertebral space height measuring device has easy and simple to handle, advantage that measurement accuracy is high.

Description

Intervertebral space height measuring device
Technical Field
The application relates to the technical field of medical equipment, especially, relate to a intervertebral space height measuring device.
Background
At present, when the fusion cage is implanted in the process of the spinal interbody fusion, the test molds with different height specifications are firstly used and are sequentially placed in the intervertebral space to measure the height of the intervertebral space, and the corresponding fusion cage is implanted into a human body until the test molds are matched with the intervertebral space.
In view of the above-mentioned related art, the inventors have considered that the process of measuring the height of the intervertebral space has a problem that the operation steps are troublesome.
Disclosure of Invention
In order to improve the loaded down with trivial details problem of the operating procedure that the measurement process of intervertebral disc space height exists among the correlation technique, this application provides an intervertebral disc space height measuring device.
The application provides a high measuring device in intervertebral space adopts following technical scheme:
an intervertebral space height measuring device comprising:
a test mold upper cover and a test mold lower cover;
one end of the driving rod penetrates through the lower test mold cover and can rotate relative to the lower test mold cover;
the linkage assembly is movably connected with the driving rod and the test mold upper cover, and can drive the test mold upper cover to be close to or far away from the test mold lower cover under the driving of the driving rod;
a holding rod fixedly connected with the lower cover of the test mold is sleeved outside the driving rod, and a marking sliding block is sleeved at one end, far away from the lower cover of the test mold, of the holding rod;
a handle is arranged at one end of the driving rod, which is far away from the lower cover of the test mold, and the handle can drive the marking slide block to slide along the axial direction of the holding rod;
the outside of the marking sliding block is provided with an indicating sleeve, the indicating sleeve is fixedly connected with the holding rod, and the marking sliding block is matched with the indicating sleeve to display the height of the intervertebral space.
Through adopting above-mentioned technical scheme, can measure the height in intervertebral space through the relative motion of examination mould upper cover and examination mould lower cover, improve intervertebral space height measurement's convenience.
Optionally, the linkage assembly includes a first slider and a second slider, and the first slider and the second slider can move along the axial direction of the driving rod and have opposite moving directions;
a first connecting rod is rotatably connected to the first sliding block, and one end, far away from the first sliding block, of the first connecting rod is rotatably connected with the upper cover of the test mold;
and a second connecting rod is rotatably connected to the second sliding block, and one end, far away from the second sliding block, of the second connecting rod is rotatably connected with the upper cover of the test mold.
Through adopting above-mentioned technical scheme, the interlock subassembly can drive the examination mould upper cover for examination mould lower cover motion.
Optionally, the surface of the end of the first link rod away from the first slider and the surface of the second link rod away from the second slider are provided with engaged gear teeth.
Through adopting above-mentioned technical scheme, can improve intervertebral space height measurement's precision.
Optionally, a limiting block is fixedly arranged on the side, facing the marking sliding block, of the holding rod, and a sliding groove matched with the limiting block is arranged on the marking sliding block.
Through adopting above-mentioned technical scheme, can prevent that the mark slider from rotating for holding the pole.
Optionally, one end of the marking slider, which is far away from the lower cover of the test mold, is provided with a first threaded hole, the handle comprises a knob portion and a transmission portion, and the transmission portion penetrates through the first threaded hole and is in threaded fit with the first threaded hole.
Through adopting above-mentioned technical scheme, the handle can drive the mark slider and slide for holding the pole.
Optionally, a marking line is arranged on the marking slider, a strip-shaped hole is formed in the indicating sleeve, and the marking line can be exposed from the strip-shaped hole;
and scale marks are arranged on the two sides of the strip-shaped hole along the length direction on the indicating sleeve.
Through adopting above-mentioned technical scheme, can show intervertebral space height.
Optionally, the outer surface of the middle part of the holding rod is provided with an anti-slip structure.
Optionally, the part of examination mould lower cover and actuating lever joint is provided with two spacing posts, the position that the actuating lever corresponds with spacing post is provided with the spacing groove, two spacing posts can the joint in spacing inslot carries out the axial spacing to the actuating lever.
Through adopting above-mentioned technical scheme, can prevent that the actuating lever from at the axial float for the examination mould lower cover.
In summary, the present application has at least one of the following technical effects:
1. the intervertebral space height is measured through the relative movement between the test mold upper cover and the test mold lower cover, so that the convenience of intervertebral space height measurement is improved;
2. adopt the teeth of a cogwheel meshing between first connecting rod and the second connecting rod, improved the synchronism of first connecting rod and second connecting rod motion to the precision of intervertebral space height measurement has further been improved.
Drawings
FIG. 1 is a schematic three-dimensional view of an intervertebral space height measuring device according to the present application;
FIG. 2 is a schematic cross-sectional view of an intervertebral space height measuring device according to the present application;
FIG. 3 is a schematic view of the linkage assembly;
FIG. 4 is a schematic diagram of the positional relationship of the mark lines and the graduation lines;
fig. 5 is an exploded view of the gripping rod, marking slide and indicating sleeve.
Description of reference numerals: 1. testing the upper cover of the mold; 2. testing a lower cover of the mold; 21. a limiting column; 3. a drive rod; 31. a limiting groove; 4. a linkage assembly; 41. a first slider; 42. a second slider; 43. a first link; 44. a second link; 45. gear teeth; 46. a first pin rod; 47. a second pin; 5. a holding rod; 51. an anti-slip structure; 52. a limiting block; 6. marking a sliding block; 61. marking a line; 62. a first threaded hole; 63. a chute; 7. an indicator sleeve; 71. a strip-shaped hole; 72. scale lines; 8. a handle; 81. a knob portion; 82. a transmission part.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
Referring to fig. 1 and 2, the embodiment of the application discloses intervertebral space height measuring device, including examination mould upper cover 1 and examination mould lower cover 2, wear to be equipped with actuating lever 3 in examination mould lower cover 2, be provided with interlock subassembly 4 between actuating lever 3 and the examination mould upper cover 1. When the driving rod 3 rotates, the upper test mold cover 1 can be driven to be close to or far away from the lower test mold cover 2 through the linkage assembly 4. Therefore, when the upper test mold cover 1 is attached to the upper surface of the intervertebral space and the lower test mold cover 2 is attached to the lower surface of the intervertebral space, the distance between the upper surface of the upper test mold cover 1 and the lower surface of the lower test mold cover 2 is the height of the intervertebral space.
Specifically, referring to fig. 2, the shape of the upper surface of the trial mold upper cover 1 can be matched with the shape of the upper surface of the intervertebral space, and the shape of the lower surface of the trial mold upper cover 1 can be matched with the shape of the lower surface of the intervertebral space.
The actuating lever 3 is cylindricly, and inside the one end of actuating lever 3 was worn to locate examination mould lower cover 2, the actuating lever 3 can use its self axis as the rotation of axes.
Referring to fig. 3, the linkage assembly 4 includes a first slider 41 and a second slider 42, the first slider 41 and the second slider 42 are both sleeved on the portion of the driving rod 3 inside the lower cover 2 of the test mold, the first slider 41 and the second slider 42 are both in threaded connection with the driving rod 3, and when the driving rod 3 rotates, the moving directions of the first slider 41 and the second slider 42 are opposite.
The linkage assembly 4 further includes a first link 43 and a second link 44. One end of the first connecting rod 43 is hinged with the first sliding block 41, and the other end of the first connecting rod 43 is rotatably connected with the edge of the test mold upper cover 1 through a first pin rod 46; one end of the second connecting rod 44 is hinged with the second sliding block 42, and the other end of the second connecting rod 44 is rotatably connected with the upper cover 1 of the test mold through a second pin 47. Thus, when the first slider 41 and the second slider 42 move towards each other along the driving rod 3, the first link 43 and the second link 44 can push the mold upper cover 1 to move away from the mold lower cover 2; when the first slider 41 and the second slider 42 move back to back along the driving rod 3, the first link 43 and the second link 44 can drive the upper test mold cover 1 to move close to the lower test mold cover 2.
In order to improve the synchronism of the movement of the first link 43 and the second link 44 to improve the accuracy of the measurement of the intervertebral height, gear teeth 45 engaging with each other may be provided on the surfaces of the end of the first link 43 remote from the first slider 41 and the end of the second link 44 remote from the second slider 42. Therefore, the test mold upper cover 1 can only move along the direction of the central connecting line of the test mold upper cover 1 and the test mold lower cover 2.
Referring to fig. 3, two limiting columns 21 are arranged at the joint of the lower cover 2 and the driving rod 3, correspondingly, a limiting groove 31 is arranged on the driving rod 3, the limiting groove 31 is annular, and the limiting columns 21 can be clamped in the limiting groove 31. So that the limit post 21 can axially limit the driving rod 3 when the driving rod 3 rotates. The limiting column 21 can adopt a pin.
Referring to fig. 2, the outside cover of actuating lever 3 is equipped with holding rod 5, and holding rod 5 and examination mould lower cover 2 fixed connection, holding rod 5 are used for gripping in intervertebral disc space height measurement process. Wherein, the holding rod 5 can be detachably connected with the lower test mold cover 2 by screws or the like, and can also be integrally formed with the lower test mold cover 2.
Referring to fig. 1, in order to improve the stability of the grip, an anti-slip structure 51 may be provided on the outer surface of the grip lever 5. The anti-slip structure 51 is a plurality of anti-slip grooves, and the anti-slip grooves are annular and distributed along the length direction of the holding rod 5. Alternatively, the anti-slip structure 51 may be a stripe pressed on the outer surface of the grip rod 5, and the like, and those skilled in the art may select the structure as needed, which is not limited in detail herein.
Referring to fig. 2 and 4, the diameter of the end of the holding rod 5 far away from the lower cover 2 of the test mold is larger than that of the middle part. One end cover that holding rod 5 kept away from examination mould lower cover 2 is equipped with mark slider 6, and mark slider 6 can slide along holding rod 5's axial direction, is provided with annular mark line 61 on the mark slider 6. One end of the marking slide block 6, which is far away from the lower cover 2 of the test mold, is provided with a first threaded hole 62.
Referring to fig. 5, in order to prevent the relative rotation between the marking slider 6 and the holding rod 5, a limiting block 52 is fixedly arranged on the outer surface of the side wall of one end of the holding rod 5, which is far away from the lower cover 2 of the test mold, and the limiting block 52 is a strip-shaped structure arranged along the axial direction of the holding rod 5. The number of the stopper 52 may be one or more, and in the present application, the number of the stopper 52 is two and is symmetrical with respect to the axial direction of the grip lever 5. Correspondingly, a sliding groove 63 matched with the limiting block 52 is arranged on the side wall of the marking slider 6 at a position corresponding to the limiting block 52, and when the marking slider 6 moves along the axial direction, the limiting block 52 slides along the sliding groove 63.
Referring to fig. 2 and 5, an indication sleeve 7 is sleeved outside the marking slider 6. Specifically, the indication sleeve 7 is detachably connected to the holding rod 5, and may be, for example, a threaded connection or a snap connection. The indicating sleeve 7 is provided with a strip-shaped hole 71, and the length direction of the strip-shaped hole 71 is consistent with the length direction of the holding rod 5. The marking line 61 of the marking slider 6 can be exposed from the strip-shaped hole 71. The outer surface of the indication sleeve 7 is provided with scale marks 72 along the length direction of the strip-shaped hole 71, and when the marking slider 6 slides along the length direction of the holding rod 5, the marking lines 61 can correspond to different scales. In this application, the number of bar hole 71 both can be one also can be a plurality of, for example, the number of bar hole 71 can be two, and two bar holes 71 are symmetrical for the axis of indicating sleeve 7 to be convenient for observing the high numerical value of intervertebral space.
Referring to fig. 2, the one end that examination mould lower cover 2 was kept away from to actuating lever 3 is connected with handle 8, and handle 8 center is provided with the through-hole along length direction, and actuating lever 3 can peg graft in the through-hole of handle 8, and handle 8 can drive actuating lever 3 rotatory. Wherein, the driving rod 3 can be connected with the handle 8 by screw thread or key connection; or the end of the driving rod 3 far away from the lower cover 2 of the test mold can be set to be prism-shaped, and the through hole of the handle 8 is set to be a polygon matched with the driving rod 3.
The handle 8 includes a knob portion 81 and a transmission portion 82. The knob part 81 is positioned outside the indicating sleeve 7, and the transmission part 82 penetrates through one end of the indicating sleeve 7 far away from the lower cover 2 of the test mold and is in threaded connection with the first threaded hole 62 on the marking slide block 6. When the handle 8 is rotated, the marking slider 6 can be moved in the axial direction of the drive rod 3.
The application discloses a high measuring device of intervertebral space's theory of operation does:
in the initial state, the upper test mold cover 1 and the lower test mold cover 2 are attached to each other. When in use, the test mold upper cover 1 and the test mold lower cover 2 in a fitting state are placed in the intervertebral space. Then the handle 8 is rotated, the handle 8 drives the driving rod 3 to rotate, the driving rod 3 further drives the first slider 41 and the second slider 42 of the linkage assembly 4 to move oppositely, and the linkage assembly 4 jacks up the test mold upper cover 1. During the rotation of the driving rod 3, the transmission part 82 of the handle 8 drives the marking slider 6 to move along the axial direction of the holding rod 5, and at the same time, the positions of the marking lines 61 and the graduation lines 72 are changed relatively. When the test mold upper cover 1 is attached to the upper surface of the intervertebral space and the test mold lower cover 2 is attached to the lower surface of the intervertebral space, the scale value corresponding to the mark line 61 is the currently measured size of the intervertebral space.
The application provides a high measuring device in intervertebral space is easy and simple to handle, and applicable in the intervertebral space of co-altitude not is measured, compares in adopting the slide hammer to strike the examination mould and carries out the measurement of intervertebral space height, can shorten operation time, reduces operation risk and patient's misery. Meanwhile, the intervertebral space height detection precision is high, and the display is visual.
The above is a preferred embodiment of the present application, and the scope of protection of the present application is not limited by the above, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. An intervertebral space height measuring device, comprising:
a test mold upper cover (1) and a test mold lower cover (2);
one end of the driving rod (3) penetrates through the lower test mold cover (2) and can rotate relative to the lower test mold cover (2);
the linkage assembly (4) is movably connected with the driving rod (3) and the test mold upper cover (1), and the linkage assembly (4) can drive the test mold upper cover (1) to be close to or far away from the test mold lower cover (2) under the driving of the driving rod (3);
a holding rod (5) fixedly connected with the test mold lower cover (2) is sleeved outside the driving rod (3), and a marking sliding block (6) is sleeved at one end, far away from the test mold lower cover (2), of the holding rod (5);
a handle (8) is arranged at one end, away from the lower test mold cover (2), of the driving rod (3), and the handle (8) can drive the marking slide block (6) to slide along the axial direction of the holding rod (5);
the outside of the marking sliding block (6) is provided with an indicating sleeve (7), the indicating sleeve (7) is fixedly connected with the holding rod (5), and the marking sliding block (6) is matched with the indicating sleeve (7) to display the height of the intervertebral space.
2. The intervertebral space height measuring device according to claim 1, wherein the linkage assembly (4) comprises a first slider (41) and a second slider (42), the first slider (41) and the second slider (42) can move along the axial direction of the driving rod (3) and the moving directions of the first slider and the second slider are opposite;
a first connecting rod (43) is rotatably connected to the first sliding block (41), and one end, far away from the first sliding block (41), of the first connecting rod (43) is rotatably connected with the upper test mould cover (1);
and a second connecting rod (44) is rotatably connected to the second sliding block (42), and one end, far away from the second sliding block (42), of the second connecting rod (44) is rotatably connected with the test mold upper cover (1).
3. Intervertebral space height measuring device according to claim 2, characterized in that the surfaces of the end of the first link (43) remote from the first slider (41) and the end of the second link (44) remote from the second slider (42) are provided with meshing gear teeth (45).
4. The intervertebral space height measuring device according to claim 1, characterized in that a limit block (52) is fixedly arranged on the side of the holding rod (5) facing the marking slider (6), and a sliding groove (63) matched with the limit block (52) is arranged on the marking slider (6).
5. The intervertebral space height measuring device according to claim 1, wherein one end of the marking slider (6) far away from the lower cover (2) of the trial mold is provided with a first threaded hole (62), the handle (8) comprises a knob part (81) and a transmission part (82), and the transmission part (82) passes through the first threaded hole (62) and is in threaded fit with the first threaded hole (62).
6. The intervertebral space height measuring device according to claim 1, characterized in that the marking slider (6) is provided with a marking line (61), the indicating sleeve (7) is provided with a strip-shaped hole (71), and the marking line (61) can be exposed from the strip-shaped hole (71);
and scale marks (72) are arranged on the two sides of the strip-shaped hole (71) along the length direction on the indicating sleeve (7).
7. Intervertebral space height measuring device according to claim 1, characterized in that the outer surface of the middle part of the holding rod (5) is provided with an anti-slip structure (51).
8. The intervertebral space height measuring device according to claim 1, wherein two limiting columns (21) are arranged at the joint part of the lower cover (2) of the trial mold and the driving rod (3), a limiting groove (31) is arranged at the part of the driving rod (3) corresponding to the limiting columns (21), and the two limiting columns (21) can be clamped in the limiting groove (31) to axially limit the driving rod (3).
CN202011560428.3A 2020-12-25 2020-12-25 Intervertebral space height measuring device Active CN112545723B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113440319A (en) * 2021-07-29 2021-09-28 佛山健翔医院有限公司 Expandable interbody fusion cage test mold

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US20070161930A1 (en) * 2005-11-23 2007-07-12 Cliff Reitzig Sizing instrument for a bodily joint such as an intervertebral disc space
US20150148809A1 (en) * 2013-11-27 2015-05-28 Institute for Musculoskeletal Science and Education, Ltd. Dynamic corpectomy calipers and methods of use thereof
US20170215767A1 (en) * 2016-02-01 2017-08-03 Zimmer Biomet Spine, Inc. Expandable paddle distractor
CN110025412A (en) * 2019-05-21 2019-07-19 谢林 The minimally invasive expanding Invasive lumbar fusion device of novel cervical vertebra under a kind of Percutaneous endoscopic
CN210185582U (en) * 2018-12-11 2020-03-27 上海交通大学医学院附属第九人民医院 Device for measuring intervertebral space length in operation
CN210903513U (en) * 2019-05-21 2020-07-03 宁夏医科大学 Intervertebral height and pressure measurer
CN211633288U (en) * 2019-12-10 2020-10-09 上海长海医院 Intervertebral height measuring device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070161930A1 (en) * 2005-11-23 2007-07-12 Cliff Reitzig Sizing instrument for a bodily joint such as an intervertebral disc space
US20150148809A1 (en) * 2013-11-27 2015-05-28 Institute for Musculoskeletal Science and Education, Ltd. Dynamic corpectomy calipers and methods of use thereof
US20170215767A1 (en) * 2016-02-01 2017-08-03 Zimmer Biomet Spine, Inc. Expandable paddle distractor
CN210185582U (en) * 2018-12-11 2020-03-27 上海交通大学医学院附属第九人民医院 Device for measuring intervertebral space length in operation
CN110025412A (en) * 2019-05-21 2019-07-19 谢林 The minimally invasive expanding Invasive lumbar fusion device of novel cervical vertebra under a kind of Percutaneous endoscopic
CN210903513U (en) * 2019-05-21 2020-07-03 宁夏医科大学 Intervertebral height and pressure measurer
CN211633288U (en) * 2019-12-10 2020-10-09 上海长海医院 Intervertebral height measuring device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113440319A (en) * 2021-07-29 2021-09-28 佛山健翔医院有限公司 Expandable interbody fusion cage test mold

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