CN113288353A - Minimally invasive spinal access - Google Patents

Minimally invasive spinal access Download PDF

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Publication number
CN113288353A
CN113288353A CN202110527181.3A CN202110527181A CN113288353A CN 113288353 A CN113288353 A CN 113288353A CN 202110527181 A CN202110527181 A CN 202110527181A CN 113288353 A CN113288353 A CN 113288353A
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CN
China
Prior art keywords
fixing ring
fixing
hook
drag
minimally invasive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110527181.3A
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Chinese (zh)
Inventor
王永峰
原杰
徐朝健
卫鑫源
山卫东
姬长远
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Wentai Baide Medical Devices Co ltd
Original Assignee
Wuxi Wentai Baide Medical Devices Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuxi Wentai Baide Medical Devices Co ltd filed Critical Wuxi Wentai Baide Medical Devices Co ltd
Priority to CN202110527181.3A priority Critical patent/CN113288353A/en
Publication of CN113288353A publication Critical patent/CN113288353A/en
Pending legal-status Critical Current

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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
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • A61B17/3421—Cannulas
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • A61B17/3421—Cannulas
    • A61B17/3439—Cannulas with means for changing the inner diameter of the cannula, e.g. expandable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3462—Trocars; Puncturing needles with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Pathology (AREA)
  • Heart & Thoracic Surgery (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 minimally invasive spine channel, which comprises: the annular fixing ring comprises a plurality of adjusting holes, the adjusting holes are arranged at intervals along the circumferential direction of the fixing ring, and each adjusting hole longitudinally extends along the circumferential direction of the fixing ring; the connecting rods are respectively connected with the adjusting holes through the fixing assemblies, and each connecting rod extends along the diameter direction of the fixing ring; the plurality of drag hooks are respectively arranged at one end of the connecting rods extending into the inner holes of the fixing rings, each drag hook comprises a connecting end and a hook end which are opposite, the connecting end of each drag hook is connected with the corresponding connecting rod, the hook end of each drag hook extends along the direction forming an angle with the fixing ring, and the hook ends of the plurality of drag hooks are positioned at the same side of the fixing ring; a plurality of guide pins, one-to-one sets up on a plurality of drag hooks, and every guide pin extends the setting along the lengthwise direction of the drag hook that corresponds. The multi-freedom-degree adjusting device can realize multi-freedom-degree adjustment of the plurality of drag hooks, and the channels are convenient to assemble and disassemble.

Description

Minimally invasive spinal access
Technical Field
The invention relates to the technical field of medical instruments, in particular to a minimally invasive spinal channel.
Background
The minimally invasive channel has been used in clinic for a long time, and different channel technologies have large differences, and the minimally invasive channel has technologies such as a multi-stage expansion channel, a clamp type expansion channel, a single channel and a double channel. However, the existing channels have the following drawbacks:
(1) the channel is unstably fixed in the body and is easy to lose position;
(2) the channel is troublesome to assemble and complicated to operate;
(3) the degree of freedom of channel adjustment is low, and it is difficult to achieve an ideal position.
Disclosure of Invention
The invention aims to provide a minimally invasive spinal canal to solve the technical problems.
Therefore, the invention adopts a technical scheme that a minimally invasive spinal channel is provided, which comprises:
the annular fixing ring comprises a plurality of adjusting holes, the adjusting holes are arranged at intervals along the circumferential direction of the fixing ring, and each adjusting hole longitudinally extends along the circumferential direction of the fixing ring;
the connecting rods are respectively connected with the adjusting holes through a plurality of fixing assemblies, and each connecting rod extends along the diameter direction of the fixing ring;
the plurality of drag hooks are respectively arranged at one end of each connecting rod extending into the inner hole of the fixing ring, each drag hook comprises a connecting end and a hook end which are opposite, the connecting end of each drag hook is connected with the corresponding connecting rod, the hook end of each drag hook extends along the direction forming an angle with the fixing ring, and the hook ends of the drag hooks are positioned at the same side of the fixing ring;
a plurality of guide pins, one-to-one sets up in a plurality of on the drag hook, every the guide pin is along corresponding the lengthwise direction extension setting of drag hook.
In one embodiment of the invention, the upper and lower surfaces of the fixing ring are both cambered surfaces.
In one embodiment of the invention, the fixing component comprises a knob and a fixing piece, the fixing piece comprises a fixed end and a clamping end which are opposite, an external thread is arranged on the outer peripheral wall of the fixed end, the clamping end is provided with a clamping groove in a penetrating manner along a direction, and the clamping groove is matched with the outer peripheral wall of the connecting rod; the knob is arranged at the fixed end.
In an embodiment of the invention, the fixing assembly further includes a cushion block, the cushion block is sleeved on the fixing end of the fixing member and located on the upper side of the fixing ring, and the lower surface of the knob abuts against the cushion block.
In one embodiment of the invention, an arc-shaped surface is arranged on one side surface of the cushion block close to the fixing ring, and the arc-shaped surface is matched with the upper surface of the fixing ring.
In an embodiment of the present invention, each of the drag hooks further includes a needle guide tube, the needle guide tube is disposed inside the drag hook along a longitudinal direction of the drag hook, and a guide hole for guiding the needle guide is disposed in each of the needle guide tubes.
In an embodiment of the invention, each draw hook is further provided with an avoiding hole, the avoiding hole extends along the longitudinal direction of the draw hook, and at least part of each needle guide tube is embedded into the avoiding hole and welded with the draw hook.
In one embodiment of the invention, the hook end of at least one of the plurality of the drag hooks extends away from the other drag hooks to form a hook part.
In an embodiment of the invention, the fixing ring is further provided with a plurality of fixing holes, the plurality of fixing holes are arranged at intervals along the circumferential direction of the fixing ring, and the plurality of fixing holes are used for being connected and fixed with an external mechanical arm.
In an embodiment of the invention, the number of the adjusting holes, the fixing assemblies, the connecting rods, the pulling hooks and the guide pins is four, and the four adjusting holes, the fixing assemblies, the connecting rods, the pulling hooks and the guide pins are uniformly arranged along the circumferential direction of the fixing ring.
The invention has the advantages that:
different from the prior art, by applying the technical scheme of the invention, the connecting rod and the fixing ring can be quickly assembled and disassembled through the fixing component in practical application. Because the fixing ring is provided with a plurality of adjusting holes which extend along the circumferential direction of the fixing ring, the opening degree of the plurality of drag hooks can be adjusted by moving the connecting rod relative to the fixing ring along the longitudinal direction of the connecting rod; the included angle between every two of the plurality of draw hooks can be adjusted by moving the connecting rod relative to the fixing ring along the longitudinal direction of the adjusting hole; therefore, the multi-degree-of-freedom adjustment of the plurality of draw hooks can be realized, and the channel assembly and disassembly are convenient. In addition, through setting up the guide pin along the lengthwise direction of every drag hook for realize stably fixing between drag hook and the bone, the drag hook is difficult to lose the position in vivo.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural view of a minimally invasive approach to the spine according to an embodiment of the present invention;
FIG. 2 is a schematic side view of a minimally invasive approach to the spine in accordance with an embodiment of the invention;
FIG. 3 is a schematic bottom view of a minimally invasive approach to the spine in accordance with an embodiment of the invention;
FIG. 4 is a schematic side view of a minimally invasive approach to the spine in accordance with another embodiment of the invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to fig. 1-4, a minimally invasive spinal canal according to an embodiment of the present invention includes a fixing ring 1, a fixing assembly 2, a connecting rod 3, a retractor 4, and a guide pin 5. The fixed ring 1 is the ring form, including a plurality of regulation holes 11, and a plurality of regulation holes 11 set up along the circumferencial direction interval of fixed ring 1, and every regulation hole 11 extends along the circumferencial direction lengthwise of fixed ring 1. The connecting rods 3 are respectively connected through the fixing assemblies 2 and the adjusting holes 11, and each connecting rod 3 extends along the diameter direction of the fixing ring 1. A plurality of drag hooks 4 set up respectively and stretch into the one end of solid fixed ring 1 downthehole at a plurality of connecting rods 3, and every drag hook 4 includes relative link 43 and hook end 42, and the link 43 of every drag hook 4 is connected with the connecting rod 3 that corresponds, and the hook end 42 of every drag hook 4 extends the setting along the direction that is the angle with solid fixed ring 1, and the hook end 42 of a plurality of drag hooks 4 lies in solid fixed ring 1's same one side. A plurality of guide pins 5 set up on a plurality of drag hooks 4 one-to-one, and every guide pin 5 extends the setting along the lengthwise direction of the drag hook 4 that corresponds.
Above-mentioned backbone wicresoft passageway during practical application, can realize connecting rod 3 and solid fixed ring 1's fast loading and unloading through fixed subassembly 2. Because the fixing ring 1 is provided with a plurality of adjusting holes 11 which extend along the circumferential direction of the fixing ring 1, the opening degree of the plurality of draw hooks 4 can be adjusted by moving the connecting rod 3 along the lengthwise direction of the connecting rod 3 relative to the fixing ring 1; the included angle between each two of the plurality of draw hooks 4 can be adjusted by moving the connecting rod 3 relative to the fixing ring 1 along the lengthwise direction of the adjusting hole 11; so, can realize the multi freedom of a plurality of drag hooks 4 and adjust, and the passageway assembly and disassembly is comparatively convenient. In addition, through setting up guide pin 5 along the lengthwise direction of every drag hook 4 for realize stably fixing between drag hook 4 and the bone, drag hook 4 is difficult to lose the position in vivo.
It should be noted that the spreading degree of the plurality of drag hooks 4 refers to the size of a channel formed by the multiple drag hooks 4 in a surrounding manner, and the channel is larger when the spreading degree is large, and the channel is smaller when the spreading degree is small.
Specifically to the embodiment, the quantity of regulation hole 11, fixed subassembly 2, connecting rod 3, drag hook 4 and guide pin 5 is four, and four regulation holes 11, fixed subassembly 2, connecting rod 3, drag hook 4 and guide pin 5 evenly set up along the circumferencial direction of solid fixed ring 1. Therefore, the channel is fixed stably.
In the embodiment of the invention, the upper surface and the lower surface of the fixing ring 1 are cambered surfaces. Thus, when the connecting rod 3 is fixed by the fixing component 2, the connecting rod 3 can have a certain angle adjustment relative to the fixing ring 1. As shown in fig. 2, when the connecting rod 3 and the fixing ring 1 form an acute angle, the hook ends 42 of the plurality of hooks 4 are in an open state (the upper end of the passage is small, and the lower end is large); as shown in fig. 4, when the connecting rod 3 forms an obtuse angle with the fixing ring 1, the hook ends of the plurality of hooks 4 are in a contracted state (the upper end of the passage is large, and the lower end is small). So, be the cambered surface through the upper and lower surface setting with solid fixed ring 1, can adjust the state of strutting of the hook end 42 of a plurality of drag hooks 4, be favorable to the fixed of passageway and bone.
It should be noted that, the upper and lower surfaces of the fixing ring 1 are both arc surfaces, which means that the upper and lower edges of the section of the fixing ring 1 are both arc surfaces. In this embodiment, both the upper and lower surfaces of the fixing ring 1 are curved upward.
In an embodiment of the present invention, the fixing assembly 2 includes a knob 21 and a fixing member 22. The mounting 22 includes relative stiff end and presss from both sides and embraces the end, is provided with the external screw thread on the periphery wall of stiff end, presss from both sides to embrace the end and runs through along a direction and be provided with the draw-in groove, draw-in groove and connecting rod 3's outer peripheral wall looks adaptation. The knob 21 is provided at the fixed end. During actual assembly, the stiff end of mounting 22 passes regulation hole 11 and extends to the top of solid fixed ring 1, and knob 21 is connected with the stiff end of mounting 22, and the lower surface butt of knob 21 in the upper surface of solid fixed ring 1 for the end is embraced by the clamp of mounting 22 holds connecting rod 3 tightly, so, can realize connecting rod 3's fast loading and unloading.
Further, the fixing assembly 2 further includes a cushion block 23, the cushion block 23 is sleeved on the fixing end of the fixing member 22 and located on the upper side of the fixing ring 1, and the lower surface of the knob 21 abuts against the cushion block 23.
Furthermore, a side surface of the pad 23 close to the fixing ring 1 is provided with an arc surface, and the arc surface is matched with the upper surface of the fixing ring 1. So, be convenient for adjust the angle of fixed subassembly 2 relative solid fixed ring 1, further adjust the angle of connecting rod 3 relative solid fixed ring 1.
In the embodiment of the present invention, each drag hook 4 further includes a needle guiding tube 41, the needle guiding tube 41 is disposed inside the drag hook 4 along the longitudinal direction of the drag hook 4, and a guiding hole for guiding the guiding needle 5 is disposed in each needle guiding tube 41.
Furthermore, each drag hook 4 is further provided with an avoiding hole 44, the avoiding hole 44 extends along the longitudinal direction of the drag hook 4, and at least part of each needle guiding tube 41 is embedded into the avoiding hole 44 and welded with the drag hook 4. Thus, the needle guide tube 41 can be easily formed, and the needle guide tube 41 can be prevented from excessively protruding from the inner surface of the hook 4.
Further, the hook end 42 of at least one of the plurality of hooks 4 is provided with a hook portion extending away from the other hooks 4.
In the embodiment, the hook ends 42 of two opposite hooks 4 extend away from each other to form a hook portion, wherein the hook end 42 of one hook 4 is pointed, and the hook end 42 of the other hook 4 is wider.
In the embodiment of the invention, the fixing ring 1 is further provided with a plurality of fixing holes 12, the plurality of fixing holes 12 are arranged at intervals along the circumferential direction of the fixing ring 1, and the plurality of fixing holes 12 are used for being connected and fixed with an external mechanical arm, so that the spinal minimally invasive channel is fixed.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A minimally invasive spine tunnel comprising:
the annular fixing ring comprises a plurality of adjusting holes, the adjusting holes are arranged at intervals along the circumferential direction of the fixing ring, and each adjusting hole longitudinally extends along the circumferential direction of the fixing ring;
the connecting rods are respectively connected with the adjusting holes through a plurality of fixing assemblies, and each connecting rod extends along the diameter direction of the fixing ring;
the plurality of drag hooks are respectively arranged at one end of each connecting rod extending into the inner hole of the fixing ring, each drag hook comprises a connecting end and a hook end which are opposite, the connecting end of each drag hook is connected with the corresponding connecting rod, the hook end of each drag hook extends along the direction forming an angle with the fixing ring, and the hook ends of the drag hooks are positioned at the same side of the fixing ring;
a plurality of guide pins, one-to-one sets up in a plurality of on the drag hook, every the guide pin is along corresponding the lengthwise direction extension setting of drag hook.
2. The minimally invasive spinal channel of claim 1, wherein the upper and lower surfaces of the fixation ring are both curved.
3. The minimally invasive spinal channel according to claim 1, wherein the fixing assembly comprises a knob and a fixing member, the fixing member comprises a fixed end and a clamping and embracing end which are opposite, an external thread is arranged on the outer peripheral wall of the fixed end, a clamping groove is arranged at the clamping and embracing end in a penetrating manner along a direction, and the clamping groove is matched with the outer peripheral wall of the connecting rod; the knob is arranged at the fixed end.
4. The minimally invasive spinal channel according to claim 3, wherein the fixing member further includes a cushion block, the cushion block is sleeved on the fixing end of the fixing member and located on the upper side of the fixing ring, and the lower surface of the knob abuts against the cushion block.
5. The minimally invasive spinal channel according to claim 4, wherein a side surface of the cushion block close to the fixing ring is provided with an arc-shaped surface, and the arc-shaped surface is matched with the upper surface of the fixing ring.
6. The minimally invasive spinal channel according to claim 1, wherein each of the drag hooks further comprises a needle guide tube, the needle guide tube is disposed inside the drag hook along a longitudinal direction of the drag hook, and a guide hole for guiding the needle guide is disposed in each of the needle guide tubes.
7. The minimally invasive spinal channel according to claim 6, wherein each of the hooks is further provided with an avoiding hole extending along a longitudinal direction of the hook, and at least a portion of each of the needle guide tubes is embedded in the avoiding hole and welded to the hook.
8. The minimally invasive spinal access system according to claim 1, wherein a hook portion is provided to extend from the hook end of at least one of the plurality of the retractor to a direction away from the other retractor.
9. The minimally invasive spinal channel according to claim 1, wherein a plurality of fixing holes are further formed in the fixing ring, the fixing holes are spaced along a circumferential direction of the fixing ring, and the fixing holes are used for being fixedly connected with an external mechanical arm.
10. The minimally invasive spinal channel according to claim 1, wherein the number of the adjusting holes, the fixing assemblies, the connecting rods, the pulling hooks and the guide pins is four, and the four adjusting holes, the fixing assemblies, the connecting rods, the pulling hooks and the guide pins are uniformly arranged along the circumferential direction of the fixing ring.
CN202110527181.3A 2021-05-14 2021-05-14 Minimally invasive spinal access Pending CN113288353A (en)

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Application Number Priority Date Filing Date Title
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050215866A1 (en) * 2004-03-25 2005-09-29 Depuy Spine, Inc. Surgical retractor positioning device
US20080300465A1 (en) * 2005-09-08 2008-12-04 Gregor Feigenwinter Spine Retractor and Distractor Device
CN103190936A (en) * 2013-03-11 2013-07-10 黄义星 Automatic hooking device for minimally invasive surgical operation of cervicothoracic junction of spinal column
CN107049384A (en) * 2017-03-11 2017-08-18 中国人民武装警察部队后勤学院附属医院 A kind of cervical spine chest section anterior minimally invasive automatic drag hook for operation device
CN108201453A (en) * 2016-12-20 2018-06-26 上海三友医疗器械股份有限公司 For the multidirectional pull device of spinal surgery
CN109745089A (en) * 2018-12-19 2019-05-14 贵阳市第四人民医院 A kind of orthopaedics operation on vertebra drag hook
CN111603211A (en) * 2020-06-09 2020-09-01 河南省中医院（河南中医药大学第二附属医院） Spreading hook in lumbar vertebra operation

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050215866A1 (en) * 2004-03-25 2005-09-29 Depuy Spine, Inc. Surgical retractor positioning device
US20080300465A1 (en) * 2005-09-08 2008-12-04 Gregor Feigenwinter Spine Retractor and Distractor Device
CN103190936A (en) * 2013-03-11 2013-07-10 黄义星 Automatic hooking device for minimally invasive surgical operation of cervicothoracic junction of spinal column
CN108201453A (en) * 2016-12-20 2018-06-26 上海三友医疗器械股份有限公司 For the multidirectional pull device of spinal surgery
CN107049384A (en) * 2017-03-11 2017-08-18 中国人民武装警察部队后勤学院附属医院 A kind of cervical spine chest section anterior minimally invasive automatic drag hook for operation device
CN109745089A (en) * 2018-12-19 2019-05-14 贵阳市第四人民医院 A kind of orthopaedics operation on vertebra drag hook
CN111603211A (en) * 2020-06-09 2020-09-01 河南省中医院（河南中医药大学第二附属医院） Spreading hook in lumbar vertebra operation

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Application publication date: 20210824