CN113648021A

CN113648021A - Ge-shaped hook knife for minimally invasive spine surgery under microscope

Info

Publication number: CN113648021A
Application number: CN202110941485.4A
Authority: CN
Inventors: 张晗祥; 袁浩; 王翀
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2021-11-16

Abstract

The invention belongs to the field of surgical instruments, and provides a Ge-shaped hook knife for minimally invasive spine surgery under a microscope, which comprises a knife head part, wherein the top of the knife head part is fixedly connected with a knife handle, the top of the knife handle is provided with a knife handle, the knife head part consists of a cutting knife and a drag hook, the drag hook is laterally and fixedly connected above the cutting edge of the cutting knife, the knife handle is in a flat elliptic cylinder or sheet structure, the joint of the bottom of the knife handle and the knife head part is in a smooth curve design, and the knife handle is in a double 90-degree bending design. Reduce the risk that the cutting edge lacerated nerve root causes nerve damage.

Description

Ge-shaped hook knife for minimally invasive spine surgery under microscope

Technical Field

The invention relates to the field of surgical instruments, in particular to a Go-type hook knife for minimally invasive spine surgery under a microscope.

Background

In the discectomy, there is a step of cutting the annulus fibrosus of the herniated disc in order to remove the herniated disc tissue, but when performing the microscopic discectomy, the laminotomy range is limited due to the limited surgical field, which often faces the following problems;

(1) the diameter of the operating channel under the microscope is limited, and the hands of an operator can also shield the operating field by operating instruments with both hands;

(2) because the windowing range of the vertebral plate is small, the stability of the vertebral column is affected by biting excessive bone, the windowing range is generally reduced as much as possible, and a suction tube is sometimes required to be accommodated to suck blood away after instruments such as a nerve retractor, a scalpel and the like are accommodated to keep the operative field clear, the scalpel is difficult to perform resection operation in the vertebral canal, and the scalpel is easy to accidentally injure nerves in a crowded and narrow vertebral canal;

therefore, the utility model provides a Ge type hook knife for minimally invasive spine surgery under a microscope to solve the problems.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a Go-type hook knife for minimally invasive spine surgery under a microscope, which aims to solve the problem that the surgical knife is difficult to perform resection operation in a vertebral canal in the existing discectomy surgery.

In order to solve the technical problem, the Ge-shaped bush-hook for minimally invasive spine surgery under a microscope provided by the invention comprises a tool bit part, wherein the top of the tool bit part is fixedly connected with a tool handle, the top of the tool handle is provided with a tool holder, the tool bit part consists of a cutting knife and a drag hook, and the drag hook is laterally and fixedly connected above the cutting edge of the cutting knife.

Furthermore, the shape of the knife handle is a flat elliptic cylinder or a sheet structure, and the joint of the bottom of the knife handle and the knife head is designed into a smooth curve.

Further, the handle of a knife is two 90 design of buckling, and the kink is the quarter circular arc, handle of a knife buckling department and cutting knife tip distance are 10 cm.

Furthermore, anti-skidding grooves are formed in two sides of the knife handle.

Furthermore, the tool bit part, the tool handle and the tool handle are connected into an integral structure and made of any one of stainless steel or carbon steel materials.

Further, the length of the cutting knife is between 3 and 5 mm.

Furthermore, the connecting part of the draw hook and the cutting knife is a smooth cambered surface, and the length of the draw hook is 7-8 mm.

Furthermore, the cutting knife is of a small needle knife-shaped double-edge structure.

According to the technical scheme, the Ge-shaped hook cutter for the minimally invasive spine surgery under the microscope is characterized in that the cutter and the hook cutter are fixed into a whole through the cutter head part, the space occupation of surgical instruments can be reduced, a good visual field is provided for the surgery, the cutter is used for surgical cutting, the hook cutter can effectively separate nerve roots when moving up and down along with the cutter, the risk of nerve injury caused by scratching of the nerve roots by the cutting edge is reduced, the visual line can not be blocked by hands or the cutter when a doctor performs the surgery through the bending design of the cutter handle, and the doctor can perform the surgery conveniently.

Drawings

In order to more clearly illustrate the embodiments of the present invention, reference will now be made briefly to the embodiments or to the accompanying drawings that are needed in the description of the prior art. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

FIG. 1 is a schematic structural diagram of an embodiment 1 of a Goya-type hook knife for minimally invasive spine surgery under a microscope according to the invention; (ii) a

Fig. 2 is a schematic structural view of a ge-shaped hook knife in an embodiment 2 of the invention, which is used for minimally invasive spine surgery under a microscope.

Reference numerals: the tool bit part 1, the cutting knife 2, the drag hook 3, the tool shank 4, the tool holder 5 and the anti-skid groove 6.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

Embodiment 1, which is shown in fig. 1, the ge-shaped bush-hook for minimally invasive spine surgery under microscope of the invention comprises a tool bit part 1, wherein the top of the tool bit part 1 is fixedly connected with a tool handle 4, the top of the tool handle 4 is provided with a tool holder 5, the tool bit part 1 consists of a cutting knife 2 and a drag hook 3, and the drag hook 3 is laterally and fixedly connected above the cutting edge of the cutting knife 2 in parallel;

in this embodiment, cutting knife 2 and drag hook 3 are located the coplanar, and when the cutting intervertebral disc, drag hook 3 can separate the effectual same cutting edge of nerve root along with the upper and lower or inside and outside removal of cutting knife 2.

Further, handle of a knife 4 shape is flat elliptic cylinder or slice, makes things convenient for handle of a knife 4 to get into human inside along wound windowing department and operates, and the 4 bottoms of handle of a knife are smooth curve design with 1 junction of tool bit portion, and the junction is scraped and is bumped human tissue and cause the secondary damage when can preventing handle of a knife 4 to get into.

Further, handle of a knife 4 is two 90 design of buckling, and the kink is the quarter circular arc, and 4 kinks of handle of a knife are 10cm with 2 knife tip distances of cutting knife, and 4 design of buckling of handle of a knife can make the doctor when the operation, and the sight can not blockked by hand or cutter itself, and the doctor of being convenient for carries out the operation.

Further, antiskid groove 6 has all been seted up to 5 both sides of handle of a knife, prevents to bleed to lead to metal handle of a knife 5 too smooth because of the patient wound, and the condition of inconvenient doctor handheld operation appears.

Furthermore, the tool bit part 1, the tool handle 4 and the tool holder 5 are connected into an integral structure, and are made of any one of stainless steel or carbon steel materials, so that the design integrity is good, the falling is not easy, the operation is easy, and the production and the manufacture are easy.

Furthermore, the cutting direction of the cutting edge of the cutting knife 2 is parallel to the draw hook 3, the length of the cutting knife 2 is 3-5mm, the length of the cutting knife 2 is not too large, the fibrous ring can be punctured for cutting by 3-5mm, otherwise, the cutting edge is too long, and the intervertebral disc is not flexible when being cut.

Further, drag hook 3 is the level and smooth cambered surface with 2 connecting portions of cutting knife, makes bottom cutting knife 2 when cutting the removal, and other tissues of human body can not be touched in drag hook 3 and the 2 junctions of cutting knife, avoid the secondary damage, and drag hook 3 length be 7-8mm, and drag hook 3 is used for the separation nervous, and length is too long be convenient for put into the vertebral canal originally, and as preferred, 3 cross sections of drag hook are blunt, flat or oval type design, can avoid drag hook 3 to cause the damage to nervous.

Furthermore, the cutting knife 2 is a small needle knife-shaped double-edge structure and is used for cutting the intervertebral disc structure, and the cutting knife is sharp and easy to operate.

Example 2, given by figure 2, differs from example 1 in that:

the invention relates to a Ge-shaped bush-hook for minimally invasive spine surgery under a microscope, which comprises a tool bit part 1, wherein the top of the tool bit part 1 is fixedly connected with a tool handle 4, the top of the tool handle 4 is provided with a tool holder 5, the tool bit part 1 consists of a cutting knife 2 and a drag hook 3, and the drag hook 3 is vertically and fixedly connected above the cutting edge of the cutting knife 2 in the lateral direction.

In this embodiment, drag hook 3 and cutting knife 2 are located the plane of difference respectively, and mutually perpendicular sets up, when the cutting intervertebral disc, drag hook 3 can be with the effectual same cutting edge of nerve root separation of hindering along with upper and lower or inside and outside removal of cutting knife 2, can make the doctor when carrying out the operation through this kind of vertical relation, only need hand the separation that can realize the nerve root with scalpel incline direction, and nerve root can provide more fields of vision in cutting direction one side for the doctor, and the operation is lighter.

The working principle is as follows: doctor is when carrying out the operation, puts into along the direction from the push pedal side of windowing with ge type bush-hook, and 2 knife noses of cutting knife can pierce the intervertebral disc, then rotatory ge type bush-hook makes drag hook 3 stretch into the nerve root below, has played the effect of dragging, and the doctor can hand the sword at this moment and operate cutting 5, and the handle of a knife 4 of bending design can provide good field of vision for the doctor operates, reduces the nervous risk of damage.

In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims

1. The utility model provides a ge type bush-hook for backbone minimal access surgery under microscope, includes the tool bit portion, tool bit portion top fixedly connected with handle of a knife, just the handle of a knife top is equipped with the handle of a knife, its characterized in that, the tool bit portion comprises cutting knife and drag hook two parts, drag hook side direction fixed connection is in cutting knife cutting edge top.

2. The Go-type bush-hook for minimally invasive surgery on spine under microscope according to claim 1, characterized in that the shape of the handle is a flat elliptic cylinder or a sheet structure, and the joint of the bottom of the handle and the head of the knife is designed to be smooth curve.

3. The Ge-type bush-hook for minimally invasive surgery on vertebral column under microscope according to claim 1, wherein the handle is designed to be double 90 ° bent, the bent part is a quarter of a circular arc, and the distance between the bent part of the handle and the tip of the cutting knife is 10 cm.

4. The Go-type bush-hook for minimally invasive surgery on vertebral column under microscope according to claim 1, characterized in that both sides of the handle are provided with anti-slip grooves.

5. The Go-type bush-hook for minimally invasive spine surgery under microscope according to claim 1, characterized in that the tool bit part, the tool handle and the tool holder are connected into an integral structure and made of any one of stainless steel or carbon steel material.

6. The Go-type hook knife for minimally invasive spinal surgery under a microscope according to claim 1, characterized in that the cutting knife is between 3-5mm in length.

7. The Go-type bush-hook for minimally invasive surgery on vertebral column under microscope as claimed in claim 1, wherein the connecting portion of the draw hook and the cutting knife is a smooth arc surface, and the length of the draw hook is 7-8 mm.

8. The Go-type hook knife for minimally invasive spinal surgery under microscope according to claim 1, characterized in that the cutting knife is a double-edged structure in the shape of a small needle knife.