CN113633329B - Minimally invasive channel device for minimally invasive spine surgery under microscope - Google Patents
Minimally invasive channel device for minimally invasive spine surgery under microscope Download PDFInfo
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- CN113633329B CN113633329B CN202110943913.7A CN202110943913A CN113633329B CN 113633329 B CN113633329 B CN 113633329B CN 202110943913 A CN202110943913 A CN 202110943913A CN 113633329 B CN113633329 B CN 113633329B
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- 238000001356 surgical procedure Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 16
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 9
- 238000002324 minimally invasive surgery Methods 0.000 claims description 7
- 230000037361 pathway Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 210000004872 soft tissue Anatomy 0.000 abstract description 4
- 210000003205 muscle Anatomy 0.000 description 22
- 230000000903 blocking effect Effects 0.000 description 13
- 238000000926 separation method Methods 0.000 description 11
- 239000003381 stabilizer Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 210000004705 lumbosacral region Anatomy 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000025712 muscle attachment Effects 0.000 description 2
- 210000003484 anatomy Anatomy 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002674 endoscopic surgery Methods 0.000 description 1
- 238000001839 endoscopy Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000002406 microsurgery Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- 230000000007 visual effect Effects 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
- A61B17/02—Surgical instruments, devices or methods for holding wounds open, e.g. retractors; Tractors
- A61B17/0218—Surgical instruments, devices or methods for holding wounds open, e.g. retractors; Tractors for minimally invasive surgery
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/02—Surgical instruments, devices or methods for holding wounds open, e.g. retractors; Tractors
- A61B17/0206—Surgical instruments, devices or methods for holding wounds open, e.g. retractors; Tractors with antagonistic arms as supports for retractor elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/02—Surgical instruments, devices or methods for holding wounds open, e.g. retractors; Tractors
- A61B17/025—Joint distractors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/02—Surgical instruments, devices or methods for holding wounds open, e.g. retractors; Tractors
- A61B17/025—Joint distractors
- A61B2017/0256—Joint distractors for the spine
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- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
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Abstract
The application provides a minimally invasive channel device for minimally invasive spine surgery under a microscope, which can enable a first support leg and a second support leg to rotate relatively around a fulcrum by using an operating handle and an included angle adjusting piece, and adjust the interval between the first support leg and the second support leg to adjust the included angle between the first support leg and the second support leg, so that a first baffle at the tail end of the first support leg is relatively far away from a second baffle at the tail end of the second support leg. And the additional rod arranged between the first support leg and the second support leg can translate along the axial direction of the additional rod, the position of the third baffle plate on the additional rod is adjusted, and the relative position of the additional rod relative to the first support leg and the second support leg is fixed by using a fastener. The first baffle and the second baffle can well block soft tissues, and the third baffle can be very easily clamped on the articular process bone of a patient, so that a very good expansion effect is achieved. The minimally invasive channel device can provide a good operation field so as to facilitate the operation of an operator.
Description
Technical Field
The application relates to the field of medical instruments, in particular to a minimally invasive channel device for minimally invasive spine surgery under a microscope.
Background
Minimally invasive spinal surgery means avoiding large incisions under certain medical risks, adopting tiny incisions or puncture channels, applying special instruments and devices, reaching lesions from normal anatomy under the monitoring of an image instrument or the guidance of navigation technology, and completing the whole operation process under visual conditions by using various miniature manual or electric instruments and devices so as to achieve the purposes of smaller incisions, less tissue trauma, less bleeding, high operation accuracy, definite effect and quick postoperative function recovery compared with the traditional or standard spinal surgery. "spinal surgery" (MINIMALLY INVASIVE SPINE surgery) is more extensive than "endoscopic surgery" (endoscopy surgery), "small incision surgery" (smaU incision surgery) and "microsurgery" (mlcrosurgery).
With the continuous progress of modern science and technology, minimally invasive spinal surgery technology is continuously developed, wherein the core steps of spinal surgery such as decompression, fusion and the like can be performed under a minimally invasive channel, and problems of usability, accuracy, adjustability of exposure range and the like of the channel establishment process determine the smoothness of the surgery.
The two-way minimally invasive channels widely used at present are mostly the following: r396121, R302191, etc., but these minimally invasive distraction channels all have the same problems:
1. These two-way minimally invasive channels are retracted towards the two sides of the head and the tail, which is difficult to block the muscles bulging from the inner side and the outer side, and the operation field is affected. For example, after the multifidus is peeled off along the spinous process vertebral lamina, the two sides of the head and the tail are spread, and the multifidus can still bulge inwards to shield the operation field.
2. At present, the design of the bidirectional minimally invasive channels is unfavorable for expanding the multifidus muscle at the bottom, so that the multifidus muscle is expanded from the bottom to shield the operative field.
Disclosure of Invention
The embodiment of the application aims to provide a minimally invasive channel device for minimally invasive spine surgery under a microscope, so as to block muscles bulging from the inner side and the outer side, provide a better surgery field and facilitate surgery.
In order to achieve the above object, an embodiment of the present application is achieved by:
In a first aspect, embodiments of the present application provide a minimally invasive access device for minimally invasive spinal surgery under a microscope, comprising: the operating handle is provided with a first supporting leg and a second supporting leg, the first supporting leg and the second supporting leg are fixedly intersected at a fulcrum, and the operating handle can relatively rotate around the fulcrum to adjust the included angle between the first supporting leg and the second supporting leg; the included angle adjusting piece is connected with the first supporting leg and the second supporting leg and used for adjusting the distance between the first supporting leg and the second supporting leg; the first baffle plate is arranged at the tail end of the first support leg, and the angle between the first baffle plate and the first support leg is in a set angle range, and the set angle range is 45-135 degrees; the second baffle plate is arranged at the tail end of the second support leg, and the angle between the second baffle plate and the second support leg is in the set angle range; an additional bar arranged between the first leg and the second leg and translatable along an axial direction of the additional bar, wherein a fastener is arranged on the first leg and/or the second leg for fixing a relative position of the additional bar with respect to the first leg and the second leg; the third baffle plate is vertically arranged on the additional rod, and the first baffle plate, the second baffle plate and the third baffle plate can be encircled to form a cylinder.
In the embodiment of the application, the first support leg and the second support leg can relatively rotate around the pivot by using the operating handle and the included angle adjusting piece, and the spacing between the first support leg and the second support leg is adjusted to adjust the included angle between the first support leg and the second support leg, so that the first baffle at the tail end of the first support leg is relatively far away from the second baffle at the tail end of the second support leg. And set up the additional pole between first stabilizer blade and second stabilizer blade and can translate along its axis direction, adjust the position of the third separation blade on the additional pole to utilize the fastener fixed additional pole for the relative position of first stabilizer blade and second stabilizer blade, make first separation blade, second separation blade and third separation blade can realize the expansion of three parties, block the muscle of inside and outside expansion better: the design position of third separation blade is located between first stabilizer blade and the second stabilizer blade, and when in actual use, first separation blade and second separation blade can block soft tissue well, and the third separation blade can be very easily blocked on patient's articular process bone to play very good expansion effect. Therefore, the minimally invasive channel device for minimally invasive spine surgery under a microscope can provide a good surgical field, so that an operator can perform surgery conveniently.
With reference to the first aspect, in a first possible implementation manner of the first aspect, the bottom of the first baffle and the bottom of the second baffle are both of a bevel design, and are both inclined downwards from a direction away from the fulcrum to a direction close to the fulcrum.
In this implementation, the bottom of the first flap and the bottom of the second flap are both of a bezel design (both sloped downward from one away from the fulcrum to one closer to the fulcrum). Therefore, when the lumbar spine surgical instrument is used, the structural characteristic of the human spine, namely the lumbar spine lamina, is considered to have an oblique angle, so that the multi-split muscle at the bottom is better propped up, the expansion of the multi-split muscle from the bottom is prevented from affecting the surgical field, and the effect of better exposing the surgical field is achieved.
With reference to the first aspect, in a second possible implementation manner of the first aspect, a tip is provided at a bottom of the third baffle, and the tip is used for being clamped on the articular process bone.
In this implementation manner, the pointed foot is designed at the bottom of the third baffle, which can be very conveniently and stably clamped on the joint bone of the articular process, and the joint of the articular process is the muscle attachment point of the multifidus, so that the third baffle can not influence the attachment of the muscle, but also can block the muscle outside (the range surrounded by the first baffle, the second baffle and the third baffle), thereby achieving a very good effect of exposing the operative field.
With reference to the first aspect, in a third possible implementation manner of the first aspect, the inner side of the first leg is provided with a groove, the second leg is provided with a threaded hole, and the position of the groove is opposite to that of the threaded hole, the included angle adjusting member is a threaded rod with an adjusting handle, the adjusting handle is operated to screw the threaded rod into the threaded hole, so that the foot end of the threaded rod is embedded into the groove, and the included angle between the first leg and the second leg is adjusted by changing the length of the threaded rod supported between the first leg and the second leg.
In this implementation, a groove is provided on the inner side of the first leg, a threaded hole (the position of the groove is opposite to the position of the threaded hole) is provided on the second leg, and the threaded rod is screwed into the threaded hole by operating the adjusting handle, so that the foot end of the threaded rod is embedded into the groove, so that the included angle between the first leg and the second leg is adjusted by changing the length of the threaded rod supported between the first leg and the second leg. Therefore, the device not only can play a role in adjusting and fixing the included angle between the first support leg and the second support leg, but also can improve the adjusting precision (convert the translational quantity into the rotational displacement quantity) and effectively prevent the situation of excessive expansion caused by misoperation.
With reference to the first aspect, in a fourth possible implementation manner of the first aspect, a first channel and a second channel are respectively provided at the same position of the first leg and the second leg, and each of the first channel and the second channel can accommodate the additional rod, and two ends of the additional rod respectively pass through the first channel and the second channel and can reciprocally translate along an axial direction of the additional rod; the fastener is used for propping the additional rod against the body of the first support leg when being arranged on the first support leg so as to fix the relative position of the additional rod relative to the first support leg and the second support leg; the fastener is arranged on the second support leg and is used for propping the additional rod on the body of the second support leg so as to fix the relative position of the additional rod relative to the first support leg and the second support leg.
In this implementation manner, the two ends of the additional rod respectively pass through the first channel arranged on the first support leg and the second channel arranged on the second support leg, the fastener can be arranged on the first support leg or the second support leg, and the additional rod can be propped against the body of the first support leg, so that the relative fixation of the additional rod is realized, and the position of the third baffle plate is fixed.
With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the second leg is provided with a fastening screw hole perpendicular to the second channel direction, and the corresponding fastening piece is a fastening screw; the relative positions of the additional rod with respect to the first leg and the second leg are fixed by screwing the fastening screw into the fastening screw hole, with the foot end of the fastening screw abutting against an additional rod located in the second channel to abut the additional rod against the inner wall of the second channel.
In this embodiment, a fastening screw hole perpendicular to the direction of the second passage is formed in the second leg, the fastening screw is used as a fastening member, and the foot end of the fastening screw is abutted against the additional rod located in the second passage by screwing the fastening screw into the fastening screw hole, so that the additional rod is abutted against the inner wall of the second passage, and the relative positions of the additional rod with respect to the first leg and the second leg are fixed. This is very convenient to operate and the relative position of the additional bar can be fixed relatively reliably.
With reference to the first aspect, in a sixth possible implementation manner of the first aspect, the body of the first baffle, the second baffle, and the third baffle is provided with a plurality of strip hollowed-out areas.
In this implementation mode, set up a plurality of strip line fretwork areas on the body of first separation blade, second separation blade and third separation blade, can utilize strip line fretwork area to alleviate the pressure that the muscle was swelled like this, and strip line fretwork area's size has restricted the size that the muscle was swelled, can not influence the operation field hardly, can also alleviate the muscle pressure that swells elsewhere.
In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a minimally invasive access device for minimally invasive spinal surgery under a microscope according to an embodiment of the present application.
Fig. 2 is a medical image of a human spine provided in an embodiment of the present application.
Fig. 3 is a schematic view of a first baffle, a second baffle, and a third baffle according to an embodiment of the present application.
Icon: 100-minimally invasive access devices; 110-an operating handle; 111-a first leg; 112-a second leg; 120-included angle adjusting piece; 130-a first flap; 140-a second baffle; 150-an additional bar; 151-fasteners; 160-a third baffle; 171-first channel; 172-second channel.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.
Referring to fig. 1, fig. 1 is a schematic diagram of a minimally invasive access device 100 for minimally invasive surgery of the spine under a microscope according to an embodiment of the present application.
In this embodiment, the minimally invasive access device 100 for minimally invasive surgery of the spine under a microscope may include: the operating handle 110, the angle adjusting member 120, the first blocking piece 130, the second blocking piece 140, the additional lever 150, and the third blocking piece 160.
Illustratively, the operating handle 110 has a first leg 111 and a second leg 112, and the first leg 111 and the second leg 112 are fixedly joined at a fulcrum and are rotatable relative to each other about the fulcrum to adjust an included angle between the first leg 111 and the second leg 112. Of course, the first leg 111 and the second leg 112 of the operating handle 110 may be "scissors" or "half scissors" (including the portion from the fulcrum of the scissors to the leg of the scissors), and are not limited herein.
For example, the angle adjuster 120 may connect the first leg 111 and the second leg 112 for adjusting a distance between the first leg 111 and the second leg 112. Here, the angle adjuster 120 may be disposed between the fulcrum and a midpoint between the ends of the first leg 111 and the second leg 112 to the fulcrum.
For example, the first blocking piece 130 may be disposed at an end of the first leg 111, and an angle between the first blocking piece 130 and the first leg 111 is within a set angle range, which is between 45 ° and 135 °. In this embodiment, about 90 ° (85 ° -95 °, for example, 90 °) is taken as an example for illustration, but the present embodiment is not limited thereto, and the present embodiment can be adjusted accordingly based on actual needs and specific application scenarios.
For example, the second blocking piece 140 may be disposed at an end of the second leg 112, and an angle between the second blocking piece 140 and the second leg 112 is located within a set angle range. Here, the angle between the second flap 140 and the second leg 112 is identical to the angle between the first flap 130 and the first leg 111.
For example, the additional bar 150 may be disposed between the first leg 111 and the second leg 112, and may be translatable in an axial direction of the additional bar 150, wherein fasteners 151 (may be disposed singly or in two) are disposed on the first leg 111 and/or on the second leg 112 for fixing a relative position of the additional bar 150 with respect to the first leg 111 and the second leg 112. Here, the additional lever 150 is disposed near the ends of the first leg 111 and the second leg 112 so that the third blocking piece 160 is engaged with the first blocking piece 130 and the second blocking piece 140.
For example, the third barrier 160 may be vertically disposed on the additional lever 150, and the first, second and third barriers 130, 140 and 160 may be surrounded in a cylindrical shape.
By using the operating handle 110 and the included angle adjusting member 120, the first leg 111 and the second leg 112 can be relatively rotated around the pivot, and the distance between the first leg 111 and the second leg 112 is adjusted to adjust the included angle between the first leg 111 and the second leg 112, so that the first blocking piece 130 at the end of the first leg 111 is relatively far away from the second blocking piece 140 at the end of the second leg 112. The additional rod 150 disposed between the first leg 111 and the second leg 112 can translate along the axial direction thereof, adjust the position of the third baffle 160 on the additional rod 150, and fix the relative position of the additional rod 150 with respect to the first leg 111 and the second leg 112 by using the fastener 151, so that the first baffle 130, the second baffle 140 and the third baffle 160 can realize expansion of three parties, and better block the muscles swelled from the inner side and the outer side: the third baffle 160 is designed to be located between the first leg 111 and the second leg 112, and in actual use, the first baffle 130 and the second baffle 140 can well block soft tissues, and the third baffle 160 can be very easily clamped on the articular process bone of the patient, so that a very good expansion effect is achieved. Thus, the use of such a minimally invasive access device 100 for minimally invasive surgery of the spine under a microscope can provide a good surgical field for the operator to perform.
The oblique angle is shown in fig. 2 by the black line in fig. 2 due to the structural feature of the human spine, the lumbar spinous process lamina.
Based on this, referring to fig. 3, in the present embodiment, the bottom of the first baffle 130 and the bottom of the second baffle 140 are both designed with a bevel, and are both inclined downward from one side away from the fulcrum to the side close to the fulcrum. That is, the lowest point of the side away from the fulcrum is higher than the lowest point of the side closer to the fulcrum.
Therefore, the structural characteristics of the human spine can be considered, so that the multi-split muscles at the bottom can be better expanded, the expansion of the multi-split muscles from the bottom can be prevented from affecting the operation field, and the effect of better exposing the operation field can be achieved.
Of course, in other possible implementations, the bezel design may be a bezel with a convex curvature to better match the structural features of the lumbar spinous process lamina, as not limited herein.
In this embodiment, the bottom of the third blocking piece 160 is provided with a spike for being clamped on the articular process bone.
Because the joint of the articular process is the muscle attachment point of the multi-split muscle, the spike is designed at the bottom of the third baffle 160, so that the third baffle 160 can be very conveniently and stably clamped on the joint bone of the articular process, the attachment of the muscle is not affected, the muscle can be blocked outside (the range surrounded by the first baffle 130, the second baffle 140 and the third baffle 160), and the effect of exposing the operation field is very good.
In this embodiment, the inner side of the first leg 111 is provided with a groove, the second leg 112 is provided with a threaded hole, the position of the groove is opposite to that of the threaded hole, the included angle adjusting member 120 is a threaded rod with an adjusting handle, and the adjusting handle is operated to screw the threaded rod into the threaded hole, so that the foot end of the threaded rod is embedded into the groove, and the included angle between the first leg 111 and the second leg is adjusted by changing the length of the threaded rod supported between the first leg 111 and the second leg 112.
Therefore, the device not only can play a role in adjusting and fixing the included angle between the first support leg 111 and the second support leg, but also can improve the adjusting precision (converting the translational amount into the rotational displacement amount) and effectively prevent the situation of excessive expansion caused by misoperation.
Of course, the angle adjusting member 120 may be implemented by other structures, which are not limited herein.
In the present embodiment, the first and second passages 171 and 172 are provided at the same positions of the first and second legs 111 and 112, respectively, and each of the first and second passages 171 and 172 can accommodate the additional lever 150. The first channel 171 and the second channel 172 may be formed on the body of the first leg 111 and the second leg 112, or may be formed by matching the body of the first leg 111 and the second leg 112 with corresponding structural components, which is not limited herein.
Both ends of the additional rod 150 may pass through the first and second passages 171 and 172, respectively, and may reciprocally translate in the axial direction of the additional rod 150.
The fastener 151 may be disposed on the first leg 111, in which case the fastener 151 is used to hold the additional bar 150 against the body of the first leg 111 to fix the relative position of the additional bar 150 with respect to the first and second legs 111, 112. The fastener 151 may also be provided on the second leg 112, in which case the fastener 151 is used to hold the additional bar 150 against the body of the second leg 112 to fix the relative position of the additional bar 150 with respect to the first and second legs 111, 112. Of course, two fasteners 151 may be provided on the first leg 111 and the second leg 112, respectively. This allows a simple and reliable way of achieving a relative fixation of the additional bar 150 and thus of the position of the third flap 160.
Illustratively, the second leg 112 is provided with a fastener 151: the second leg 112 is provided with a fastening screw hole perpendicular to the direction of the second channel 172, and the corresponding fastening piece 151 is a fastening screw. By screwing the fastening screw into the fastening screw hole, the foot end of the fastening screw is used to abut against the additional bar 150 located in the second channel 172 to abut against the inner wall of the second channel 172, thereby fixing the relative position of the additional bar 150 with respect to the first leg 111 and the second leg 112. This is very convenient and the relative position of the additional lever 150 can be fixed more reliably.
In this embodiment, the body of the first baffle 130, the second baffle 140 and the third baffle 160 is provided with a plurality of hollow areas. Therefore, the strip-shaped hollowed-out area can be utilized to relieve the pressure of muscle expansion, the size of the muscle expansion is limited by the size of the strip-shaped hollowed-out area, the operation field is hardly affected, and the pressure of the muscle expansion elsewhere can be relieved.
In summary, the embodiment of the application provides a minimally invasive channel device 100 for minimally invasive spine surgery under a microscope, which uses an operating handle 110 and an included angle adjusting member 120 to enable a first leg 111 and a second leg 112 to rotate relatively around a fulcrum, and adjusts the interval between the first leg 111 and the second leg 112 to adjust the included angle between the first leg 111 and the second leg 112, so that a first baffle 130 at the end of the first leg 111 is relatively far away from a second baffle 140 at the end of the second leg 112. The additional rod 150 disposed between the first leg 111 and the second leg 112 can translate along the axial direction thereof, adjust the position of the third baffle 160 on the additional rod 150, and fix the relative position of the additional rod 150 with respect to the first leg 111 and the second leg 112 by using the fastener 151, so that the first baffle 130, the second baffle 140 and the third baffle 160 can realize expansion of three parties, and better block the muscles swelled from the inner side and the outer side: the third baffle 160 is designed to be located between the first leg 111 and the second leg 112, and in actual use, the first baffle 130 and the second baffle 140 can well block soft tissues, and the third baffle 160 can be very easily clamped on the articular process bone of the patient, so that a very good expansion effect is achieved. Thus, the use of such a minimally invasive access device 100 for minimally invasive surgery of the spine under a microscope can provide a good surgical field for the operator to perform.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (5)
1. A minimally invasive access device for minimally invasive surgery of the spine under a microscope, comprising:
the operating handle is provided with a first supporting leg and a second supporting leg, the first supporting leg and the second supporting leg are fixedly intersected at a fulcrum, and the operating handle can relatively rotate around the fulcrum to adjust the included angle between the first supporting leg and the second supporting leg;
the included angle adjusting piece is connected with the first supporting leg and the second supporting leg and used for adjusting the distance between the first supporting leg and the second supporting leg;
The first baffle plate is arranged at the tail end of the first support leg, and the angle between the first baffle plate and the first support leg is in a set angle range, and the set angle range is 45-135 degrees;
the second baffle plate is arranged at the tail end of the second support leg, and the angle between the second baffle plate and the second support leg is in the set angle range;
An additional bar arranged between the first leg and the second leg and translatable along an axial direction of the additional bar, wherein a fastener is arranged on the first leg and/or the second leg for fixing a relative position of the additional bar with respect to the first leg and the second leg;
the third baffle plate is vertically arranged on the additional rod, and the first baffle plate, the second baffle plate and the third baffle plate can be encircled to form a cylinder;
The first baffle plate, the second baffle plate and the third baffle plate are provided with a plurality of strip hollowed-out areas on the body;
The bottom of the third baffle plate is provided with a pointed foot which is used for being clamped on the articular process bone.
2. The minimally invasive pathway device for minimally invasive spine surgery of claim 1 wherein the bottom of the first baffle and the bottom of the second baffle are both beveled and each slope downward from a direction away from the fulcrum to a direction closer to the fulcrum.
3. The minimally invasive channel device for microscopic spinal minimally invasive surgery of claim 1, wherein the first leg has a groove formed therein, the second leg has a threaded hole formed therein, and the groove is located opposite to the threaded hole,
The contained angle regulating part is a threaded rod with an adjusting handle, the adjusting handle is operated to screw the threaded rod into the threaded hole, so that the foot end of the threaded rod is embedded into the groove, the length of the threaded rod supported between the first supporting leg and the second supporting leg is changed, and the contained angle between the first supporting leg and the second supporting leg is adjusted.
4. The minimally invasive access device for minimally invasive surgery of the spine under a microscope of claim 1, wherein the first and second legs are provided with a first and second channel, respectively, in the same location, and wherein the first and second channels each receive the additional rod,
The two ends of the additional rod respectively pass through the first channel and the second channel and can reciprocally translate along the axial direction of the additional rod;
The fastener is used for propping the additional rod against the body of the first support leg when being arranged on the first support leg so as to fix the relative position of the additional rod relative to the first support leg and the second support leg;
the fastener is arranged on the second support leg and is used for propping the additional rod on the body of the second support leg so as to fix the relative position of the additional rod relative to the first support leg and the second support leg.
5. The minimally invasive spinal canal device for minimally invasive microscopic spinal procedures of claim 4, wherein the second leg has fastening screw holes formed therein perpendicular to the second canal direction,
Correspondingly, the fastening piece is a fastening screw;
The relative positions of the additional rod with respect to the first leg and the second leg are fixed by screwing the fastening screw into the fastening screw hole, with the foot end of the fastening screw abutting against an additional rod located in the second channel to abut the additional rod against the inner wall of the second channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110943913.7A CN113633329B (en) | 2021-08-17 | 2021-08-17 | Minimally invasive channel device for minimally invasive spine surgery under microscope |
Applications Claiming Priority (1)
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