CN113633329A - 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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- CN113633329A CN113633329A CN202110943913.7A CN202110943913A CN113633329A CN 113633329 A CN113633329 A CN 113633329A CN 202110943913 A CN202110943913 A CN 202110943913A CN 113633329 A CN113633329 A CN 113633329A
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- 238000001356 surgical procedure Methods 0.000 title claims abstract description 30
- 230000000903 blocking effect Effects 0.000 claims abstract description 69
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 17
- 238000000926 separation method Methods 0.000 claims abstract description 13
- 210000000988 bone and bone Anatomy 0.000 claims description 7
- 238000013519 translation Methods 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 abstract description 26
- 230000000694 effects Effects 0.000 abstract description 11
- 210000004872 soft tissue Anatomy 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 108010048734 sclerotin Proteins 0.000 abstract description 2
- 210000003205 muscle Anatomy 0.000 description 23
- 238000005516 engineering process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 238000002674 endoscopic surgery Methods 0.000 description 3
- 230000025712 muscle attachment Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 210000003484 anatomy Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000006837 decompression Effects 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
- 210000004705 lumbosacral region Anatomy 0.000 description 1
- 238000002406 microsurgery Methods 0.000 description 1
- 238000002324 minimally invasive surgery 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
- 239000000126 substance Substances 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, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0218—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; 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, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0206—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors with antagonistic arms as supports for retractor elements
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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
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
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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
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
- A61B2017/0256—Joint distractors for the spine
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Abstract
The application provides a minimal access device for backbone minimal access surgery under microscope, utilizes operating handle and contained angle regulating part, can make first stabilizer blade and second stabilizer blade rotate around the fulcrum relatively, adjusts the interval between first stabilizer blade and the second stabilizer blade in order to adjust the contained angle between first stabilizer blade and the second stabilizer blade to make and keep away from relatively between the terminal first separation blade of first stabilizer blade and the terminal second separation blade of second stabilizer blade. The additional rod arranged between the first support leg and the second support leg can translate along the axis direction of the additional rod, the position of the third blocking piece 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 the fastener. The first baffle plate and the second baffle plate can well block soft tissues, and the third baffle plate can be very easily clamped on the articular process sclerotin of a patient, so that a very good expansion effect is achieved. The minimally invasive channel device can provide a good surgical field so as to facilitate the operation of a surgeon.
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
The minimally invasive spine surgery technology means that large incisions are avoided under certain medical risks, tiny incisions or puncture channels are adopted, special instruments and devices are used, under the monitoring of an image instrument or the guidance of a navigation technology, various miniature manual or electric instruments and equipment are used for reaching the lesion from a normal anatomical structure, the whole operation process is completed under a visual condition, and the aims of being smaller than the traditional or standard spine operation incision, small in tissue trauma, less in bleeding, high in operation accuracy, positive in effect and fast in postoperative function recovery are achieved. "spinal surgery" (minimally invasive surgery) is more widespread than "endoscopic surgery", "endoscopic surgery" (endoscopic surgery), "small incision surgery" (small incision surgery) and "microsurgery" (mlcrosurgery).
With the continuous progress of modern science and technology, the minimally invasive spinal surgery technology is continuously developed, wherein the core steps of spinal surgeries such as decompression and fusion can be performed under a minimally invasive channel, and the smoothness of the surgeries is determined by the problems of easiness, accuracy, adjustability of exposure range and the like of the channel establishing process.
The two-way minimally invasive channels widely used at present are the following: r396121, R302191 and the like, but the minimally invasive distraction channels have the same problems:
1. the two-way minimally invasive channels are retracted towards the head and the tail, so that muscles expanded from the inner side and the outer side are difficult to block, and the surgical field is influenced. For example, after stripping the multifidus muscle along the spinous process, the two sides of the head and tail are spread apart, and the multifidus muscle still bulges to the medial side to shield the surgical field.
2. At present, the design of the two-way minimally invasive channels is not beneficial to opening the multifidus muscles at the bottom, so that the multifidus muscles are expanded from the bottom to shield the surgical field.
Disclosure of Invention
An object of the embodiment of the application is to provide a minimally invasive channel device for minimally invasive spine surgery under a microscope, so that the expanded muscles on the inner side and the outer side are blocked, a better surgical field is provided, and the surgery is convenient to perform.
In order to achieve the above object, embodiments of the present application are implemented as follows:
in a first aspect, embodiments of the present application provide a minimally invasive access device for minimally invasive spine surgery under a microscope, including: 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 rotate around the fulcrum relatively to adjust an 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 blocking piece is arranged at the tail end of the first supporting leg, the angle between the first blocking piece and the first supporting leg is within 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 supporting leg, and the angle between the second baffle plate and the second supporting leg is within the set angle range; the additional rod is arranged between the first supporting leg and the second supporting leg and can translate along the axial direction of the additional rod, wherein a fastener is arranged on the first supporting leg and/or the second supporting leg and is used for fixing the relative position of the additional rod relative to the first supporting leg and the second supporting leg; and the third blocking piece is vertically arranged on the additional rod, and the first blocking piece, the second blocking piece and the third blocking piece can surround into a cylinder shape.
In this application embodiment, utilize operating handle and contained angle regulating part, can make first stabilizer blade and second stabilizer blade rotate around the fulcrum relatively, adjust the interval between first stabilizer blade and the second stabilizer blade in order to adjust the contained angle between first stabilizer blade and the second stabilizer blade to make and keep away from relatively between the terminal first separation blade of first stabilizer blade and the terminal second separation blade of second stabilizer blade. And the additional rod of setting between first stabilizer blade and second stabilizer blade can carry out the translation along its axis direction, adjusts the position of the third separation blade on the additional rod to utilize the fixed relative position of additional rod for first stabilizer blade and second stabilizer blade of fastener, make first separation blade, second separation blade and third separation blade can realize the expansion of three parties, block better the muscle that the inside and outside expands: the design position of the third baffle is located between the first support leg and the second support leg, when the medical dilator is in actual use, the first baffle and the second baffle can well block soft tissues, and the third baffle can be very easily clamped on articular process sclerotin of a patient, so that a very good expansion effect is achieved. Therefore, the minimally invasive channel device for the minimally invasive spine surgery under the microscope can provide a good surgical field so as to facilitate the operation of an operator.
With reference to the first aspect, in a first possible implementation manner of the first aspect, the bottom of the first blocking piece and the bottom of the second blocking piece are both designed to be beveled, and both are inclined downward from a side away from the fulcrum to a side close to the fulcrum.
In this implementation, the bottom of the first blocking piece and the bottom of the second blocking piece are both designed as a bevel (both are inclined downwards from the side far away from the fulcrum to the side close to the fulcrum). Therefore, when the operation instrument is used, the structural characteristic of the spine of a human body, namely the lumbar spinous process vertebral plate has an oblique angle, is considered, so that the multifidus muscle at the bottom is better expanded, the operation field is prevented from being expanded from the bottom, and the effect of better exposing the operation field is achieved.
With reference to the first aspect, in a second possible implementation manner of the first aspect, a sharp foot is provided at the bottom of the third blocking plate, and is used for being clamped on the articular process bone substance.
In the implementation mode, the sharp foot is designed at the bottom of the third baffle plate, so that the third baffle plate can be very conveniently and stably clamped on articular bone of the articular process, and the articular process joint is a muscle attachment point of multifidus muscles, so that the third baffle plate can not influence the attachment of the muscles, and can block the muscles outside (outside the range surrounded by the first baffle plate, the second baffle plate and the third baffle plate), and a very good effect of exposing the operative field is achieved.
With reference to the first aspect, in a third possible implementation manner of the first aspect, a groove is formed in the inner side of the first support leg, a threaded hole is formed in the second support leg, the position of the groove is opposite to the position of the threaded hole, the included angle adjusting element 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 support leg and the second support leg is adjusted by changing the length of the threaded rod supported between the first support leg and the second support leg.
In the implementation mode, a groove is formed in the inner side of the first support leg, a threaded hole is formed in the second support leg (the position of the groove is opposite to that of the threaded hole), the threaded rod is screwed into the threaded hole through the operation adjusting handle, so that the foot end of the threaded rod is embedded into the groove, the length of the threaded rod supported between the first support leg and the second support leg is changed, and the included angle between the first support leg and the second support leg is adjusted. Not only can play the effect of adjusting and fixing contained angle between first stabilizer blade and the second foot like this, can also improve the regulation precision (convert the translation volume into rotary displacement volume), effectively prevent the condition of the excessive expansion that the maloperation brought.
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 disposed at the same position of the first support leg and the second support leg, and both the first channel and the second channel can accommodate the additional rod, and both ends of the additional rod respectively pass through the first channel and the second channel and can perform reciprocating translation along an axial direction of the additional rod; when the fastener is arranged on the first supporting leg, the fastener is used for abutting the additional rod on the body of the first supporting leg so as to fix the relative position of the additional rod relative to the first supporting leg and the second supporting leg; when the fastener is arranged on the second supporting leg, the fastener is used for enabling the additional rod to be abutted against the body of the second supporting leg so as to fix the relative position of the additional rod relative to the first supporting leg and the second supporting leg.
In this implementation, the both ends of additional rod pass the second passageway that sets up on the first stabilizer blade and the second stabilizer blade respectively, and the fastener can set up on first stabilizer blade or second stabilizer blade, can support the additional rod and hold on the body of first stabilizer blade, realizes the relatively fixed of additional rod to the position of fixed third separation blade.
With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, a fastening screw hole perpendicular to the second channel direction is formed in the second supporting leg, and correspondingly, the fastening member is a fastening screw; and by screwing the fastening screw into the fastening screw hole, the foot end of the fastening screw is abutted against an additional rod positioned in the second channel so as to abut against the inner wall of the second channel, thereby fixing the relative position of the additional rod relative to the first support leg and the second support leg.
In this implementation manner, a fastening screw hole perpendicular to the direction of the second channel is formed in the second support leg, the fastening screw is used as a fastening piece, the fastening screw is screwed into the fastening screw hole, and the foot end of the fastening screw abuts against the additional rod located in the second channel so as to abut against the inner wall of the second channel, thereby fixing the relative position of the additional rod with respect to the first support leg and the second support leg. Therefore, the operation is very convenient, and the relative position of the additional rod can be reliably fixed.
With reference to the first aspect, in a sixth possible implementation manner of the first aspect, a plurality of strip-row hollow areas are formed in bodies of the first blocking piece, the second blocking piece, and the third blocking piece.
In this implementation, set up a plurality of strip row fretwork regions on the body of first separation blade, second separation blade and third separation blade, can utilize strip row fretwork region to alleviate the pressure that muscle expands like this, and the size in strip row fretwork region has restricted the size that muscle expands, can not influence the art field hardly, can also alleviate the muscle expansion pressure elsewhere.
In order to make the aforementioned 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 required to be used 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 therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic view of a minimally invasive access device for minimally invasive spine surgery under a microscope according to an embodiment of the application.
Fig. 2 is a medical image of a human spine provided by an embodiment of the present application.
Fig. 3 is a schematic view of a first blocking sheet, a second blocking sheet and a third blocking sheet provided in an embodiment of the present application.
Icon: 100-a minimally invasive access device; 110-an operating handle; 111-a first leg; 112-a second leg; 120-included angle adjustment; 130-a first flap; 140-a second baffle plate; 150-an additional rod; 151-fasteners; 160-a third baffle plate; 171-a 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 drawings in the embodiments of the present application.
Referring to fig. 1, fig. 1 is a schematic view of a minimally invasive access device 100 for minimally invasive spine surgery under a microscope according to an embodiment of the present application.
In this embodiment, a minimally invasive access device 100 for minimally invasive spine surgery under a microscope may comprise: an operating handle 110, an angle adjusting member 120, a first blocking piece 130, a second blocking piece 140, an additional rod 150 and a 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 pivot point and can relatively rotate around the pivot point 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-type" as a whole, or may be "half-scissors-type" (including a portion from the fulcrum of the scissors to the scissor leg), and are not limited herein.
For example, the angle adjusting member 120 may connect the first leg 111 and the second leg 112 for adjusting the distance between the first leg 111 and the second leg 112. The angle adjusting member 120 may be disposed between the fulcrum and a midpoint between the ends of the first leg 111 and the second leg 112 and the fulcrum.
For example, the first blocking piece 130 may be disposed at the end of the first leg 111, and the angle between the first blocking piece 130 and the first leg 111 is in a set angle range, and the set angle range is between 45 ° and 135 °. In the present embodiment, an example of about 90 ° (85 ° to 95 °, for example, 90 °) is described, but the present invention is not limited thereto, and the adjustment can be performed according to actual needs and specific application scenarios.
For example, the second blocking piece 140 may be disposed at the end of the second leg 112, and the angle between the second blocking piece 140 and the second leg 112 is within a set angle range. Here, the angle between the second blocking piece 140 and the second leg 112 is the same as the angle between the first blocking piece 130 and the first leg 111.
For example, the additional rod 150 may be disposed between the first leg 111 and the second leg 112, and may be capable of translating along the axial direction of the additional rod 150, wherein a fastener 151 (which may be disposed singly or two at the same time) is disposed on the first leg 111 and/or the second leg 112 for fixing the relative position of the additional rod 150 with respect to the first leg 111 and the second leg 112. Here, the additional bar 150 is disposed near the ends of the first leg 111 and the second leg 112 so that the third flap 160 is engaged with the first flap 130 and the second flap 140.
For example, the third blocking piece 160 may be vertically disposed on the additional rod 150, and the first blocking piece 130, the second blocking piece 140, and the third blocking piece 160 may surround a cylinder shape.
By using the operating handle 110 and the angle adjusting member 120, the first leg 111 and the second leg 112 can be relatively rotated around the fulcrum, and the distance between the first leg 111 and the second leg 112 is adjusted to adjust the 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 and the second blocking piece 140 at the end of the second leg 112 are relatively far away. The additional rod 150 disposed between the first leg 111 and the second leg 112 can be translated along the axial direction thereof, the position of the third blocking piece 160 on the additional rod 150 is adjusted, and the relative position of the additional rod 150 with respect to the first leg 111 and the second leg 112 is fixed by the fastener 151, so that the first blocking piece 130, the second blocking piece 140 and the third blocking piece 160 can achieve three-way expansion, and better block the muscles swelling from the inside and the outside: the third blocking piece 160 is designed to be located between the first leg 111 and the second leg 112, so that the first blocking piece 130 and the second blocking piece 140 can well block soft tissues during actual use, and the third blocking piece 160 can be very easily clamped on the articular process bone of a patient, thereby achieving a very good expansion effect. Therefore, the use of the minimally invasive access device 100 for minimally invasive spine surgery under a microscope can provide a good surgical field for the operator to perform the surgery.
Due to the structural features of the human spine, the spinous process of lumbar vertebrae has a bevel, as shown in fig. 2, which is shown by the black line in fig. 2.
Based on this, referring to fig. 3, in the present embodiment, the bottom of the first blocking plate 130 and the bottom of the second blocking plate 140 are both designed as a bevel, and both are inclined downward from the side far from the fulcrum to the side near the fulcrum. That is, the lowest point of the side far from the fulcrum is higher than the lowest point of the side near the fulcrum.
Therefore, the structural characteristics of the spine of the human body can be considered, so that the multifidus muscle at the bottom is better expanded, the operation field is prevented from being affected by the bulging of the multifidus muscle from the bottom, and the effect of better exposing the operation field is achieved.
Of course, in other possible implementations, the bezel design may be a bezel with a convex curvature to better match the structural characteristics of the spinous process lamina of the lumbar spine, and is not limited herein.
In this embodiment, the bottom of the third stopping sheet 160 is provided with a sharp foot for being stuck on the articular process bone.
Because the joint of the articular process is the muscle attachment point of the multifidus muscle, the bottom of the third blocking piece 160 is provided with the sharp foot, so that the third blocking piece 160 can be very conveniently and stably clamped on the articular bone of the articular process, the muscle attachment is not influenced, the muscle can be blocked outside (outside the range surrounded by the first blocking piece 130, the second blocking piece 140 and the third blocking piece 160), and the very good effect of exposing the operative field is achieved.
In this embodiment, the inner side of the first supporting leg 111 is provided with a groove, the second supporting leg 112 is provided with a threaded hole, the position of the groove is opposite to the position of the threaded hole, the included angle adjusting piece 120 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 111 and the second supporting leg 112 is changed, and the included angle between the first supporting leg 111 and the second supporting leg is adjusted.
Not only can play the effect of adjusting and fixing contained angle between first leg 111 and the second foot like this, can also improve the regulation precision (convert the translation volume into rotary displacement volume), effectively prevent the condition of the excessive expansion that the maloperation brought.
Of course, the angle adjusting member 120 may be implemented by other structures, which are not limited herein.
In this embodiment, the first leg 111 and the second leg 112 are provided with a first channel 171 and a second channel 172 at the same position, respectively, and both the first channel 171 and the second channel 172 can accommodate the additional rod 150. The first and second passages 171 and 172 may be formed in the bodies of the first and second legs 111 and 112, or may be formed by using corresponding structural components to match the bodies of the first and second legs 111 and 112, which is not limited herein.
Both ends of the attachment lever 150 may respectively pass through the first and second passages 171 and 172 and may be reciprocally translated in the axial direction of the attachment lever 150.
The fastener 151 may be disposed on the first leg 111, and at this time, the fastener 151 is used for supporting the additional rod 150 against the body of the first leg 111 to fix the relative position of the additional rod 150 with respect to the first leg 111 and the second leg 112. The fastening member 151 may also be disposed on the second leg 112, and the fastening member 151 is used to support the additional rod 150 against the body of the second leg 112 to fix the relative position of the additional rod 150 with respect to the first leg 111 and the second leg 112. Of course, two fasteners 151 may be provided on the first leg 111 and the second leg 112, respectively. This allows the relative fixation of the attachment lever 150 and thus the position of the third flap 160 to be fixed in a simple and reliable manner.
For example, the fastener 151 is disposed on the second leg 112: fastening screw holes perpendicular to the direction of the second channel 172 are formed in the second leg 112, and correspondingly, the fastening members 151 are fastening screws. The foot end of the fastening screw abuts against the additional rod 150 located in the second channel 172 by screwing the fastening screw into the fastening screw hole, so that the additional rod 150 abuts against the inner wall of the second channel 172, thereby fixing the relative position of the additional rod 150 with respect to the first leg 111 and the second leg 112. This is very convenient and the relative position of the attachment lever 150 can be fixed relatively reliably.
In the embodiment, the body of the first barrier 130, the second barrier 140 and the third barrier 160 has a plurality of row-by-row hollow areas. Can utilize the strip row fretwork region like this to alleviate the pressure that muscle was expanded, and the size that muscle was expanded has been restricted to the size in strip row fretwork region, can not influence the art field hardly, can also alleviate the muscle pressure that expands elsewhere.
In summary, the minimally invasive access device 100 for minimally invasive spine surgery under microscope provided by the embodiment of the present application utilizes the operating handle 110 and the angle adjusting member 120 to enable the first leg 111 and the second leg 112 to relatively rotate around the fulcrum, and adjusts the distance between the first leg 111 and the second leg 112 to adjust the 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 and the second blocking piece 140 at the end of the second leg 112 are relatively far away. The additional rod 150 disposed between the first leg 111 and the second leg 112 can be translated along the axial direction thereof, the position of the third blocking piece 160 on the additional rod 150 is adjusted, and the relative position of the additional rod 150 with respect to the first leg 111 and the second leg 112 is fixed by the fastener 151, so that the first blocking piece 130, the second blocking piece 140 and the third blocking piece 160 can achieve three-way expansion, and better block the muscles swelling from the inside and the outside: the third blocking piece 160 is designed to be located between the first leg 111 and the second leg 112, so that the first blocking piece 130 and the second blocking piece 140 can well block soft tissues during actual use, and the third blocking piece 160 can be very easily clamped on the articular process bone of a patient, thereby achieving a very good expansion effect. Therefore, the use of the minimally invasive access device 100 for minimally invasive spine surgery under a microscope can provide a good surgical field for the operator to perform the surgery.
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 changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (7)
1. A minimally invasive access device for minimally invasive spine 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 rotate around the fulcrum relatively to adjust an 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 blocking piece is arranged at the tail end of the first supporting leg, the angle between the first blocking piece and the first supporting leg is within 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 supporting leg, and the angle between the second baffle plate and the second supporting leg is within the set angle range;
the additional rod is arranged between the first supporting leg and the second supporting leg and can translate along the axial direction of the additional rod, wherein a fastener is arranged on the first supporting leg and/or the second supporting leg and is used for fixing the relative position of the additional rod relative to the first supporting leg and the second supporting leg;
and the third blocking piece is vertically arranged on the additional rod, and the first blocking piece, the second blocking piece and the third blocking piece can surround into a cylinder shape.
2. The minimally invasive access device for minimally invasive spine surgery according to claim 1, wherein the bottom of the first blocking piece and the bottom of the second blocking piece are both of a beveled design and both are inclined downwards from a side away from the fulcrum to a side close to the fulcrum.
3. The minimally invasive access device for minimally invasive spine surgery under microscope according to claim 1, wherein the bottom of the third separation blade is provided with a sharp foot for being clamped on the articular process bone.
4. The minimally invasive access device for minimally invasive spine surgery under microscope according to claim 1, wherein the first leg is provided with a groove on the inner side, the second leg is provided with a threaded hole, and the position of the groove is opposite to the position of the threaded hole,
the included angle adjusting piece 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 supporting foot and the second supporting foot is adjusted by changing the length of the threaded rod supported between the first supporting foot and the second supporting foot.
5. The minimally invasive access device for minimally invasive spine surgery under microscope according to claim 1, wherein a first channel and a second channel are respectively arranged on the same positions of the first support leg and the second support leg, and both the first channel and the second channel can accommodate the additional rod,
two ends of the additional rod respectively penetrate through the first channel and the second channel and can perform reciprocating translation along the axial direction of the additional rod;
when the fastener is arranged on the first supporting leg, the fastener is used for abutting the additional rod on the body of the first supporting leg so as to fix the relative position of the additional rod relative to the first supporting leg and the second supporting leg;
when the fastener is arranged on the second supporting leg, the fastener is used for enabling the additional rod to be abutted against the body of the second supporting leg so as to fix the relative position of the additional rod relative to the first supporting leg and the second supporting leg.
6. The minimally invasive access device for minimally invasive spine surgery under microscope according to claim 5, wherein the second leg is provided with a fastening screw hole perpendicular to the direction of the second access,
correspondingly, the fastening piece is a fastening screw;
and by screwing the fastening screw into the fastening screw hole, the foot end of the fastening screw is abutted against an additional rod positioned in the second channel so as to abut against the inner wall of the second channel, thereby fixing the relative position of the additional rod relative to the first support leg and the second support leg.
7. The minimally invasive access device for minimally invasive spine surgery under microscope according to claim 1, wherein a plurality of strip-row hollowed-out areas are opened on the body of the first blocking plate, the body of the second blocking plate and the body of the third blocking plate.
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| CN113633329B (en) | 2024-06-11 |
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