CN211355637U

CN211355637U - Semi-vertebral plate drag hook with light source

Info

Publication number: CN211355637U
Application number: CN201921796615.4U
Authority: CN
Inventors: 彭自强
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2020-08-28
Anticipated expiration: 2029-10-24

Abstract

A semi-vertebral plate drag hook with a light source comprises a drag hook handle (11) and an arc-shaped baffle plate (12) connected with the drag hook handle at a certain angle alpha, wherein a forward arc-shaped sharp tooth (13) is arranged below the arc-shaped baffle plate (12), a U-shaped groove (14) is formed between the two sharp teeth, a light guide optical fiber (17) is arranged on the drag hook handle (11), and the light guide optical fiber (17) is connected with a light-emitting device arranged on the arc-shaped baffle plate (12). The lumbar vertebra pedicle screw inserting device has the advantages of being simple in structure and convenient to use, enabling an anatomical structure to be clear, quickly and accurately positioning an inserting needle point, quickly punching and quickly inserting a screw when the lumbar vertebra pedicle screw is inserted.

Description

Semi-vertebral plate drag hook with light source

Technical Field

The utility model relates to an orthopedic surgery instrument, in particular to an instrument for keeping an incision open, in particular to a semi-vertebral plate drag hook with a light source.

Background

The half vertebral plate draw hook is widely used in orthopedic surgery as an operation tool, especially the spine surgery is indispensable, and the half vertebral plate draw hook is needed to draw soft tissues no matter the pure intervertebral plate windowing nuclectomy or the vertebral canal enlarging decompression pedicle screw fixation. The half vertebral plate drag hook that uses widely at present comprises handle and plane baffle, and the tip top of below with parallel baffle pushes down the handle tail end along the lateral margin of facet joint process when needing to draw out the paravertebral soft tissue and blocks the paravertebral soft tissue outside the plane baffle through lever strength. When the drag hook is used for nail placement of a single-tooth tine design, the tine needs to be placed at the tip of the outer edge of the facet joint process, the facet joint process is easy to pierce, the placement of a pedicle screw is affected, and the facet joint process is easy to crack when the tine props against the facet joint process for a patient with osteoporosis due to the fact that the facet joint process is small and shallow. Present lumbar vertebrae way of escape operation mostly is little incision minimal access surgery, and often the incision is very little and half vertebral plate drag hook of tradition does not have the supplementary often field of vision unclear, the operation difficulty, simultaneously because the baffle is the horizontal plane and the pedicle of vertebral arch screw is cylindrical and bulky, horizontal baffle occupies the screw and puts into the space when putting the nail, influences the screw and puts into along the correct direction, injures the dura mater bag easily by mistake and nerve root or leads to putting the nail failure.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a half vertebral plate drag hook with a light source. Aims to solve the following defects when the existing half vertebral plate draw hook is arranged on the pedicle screw for placing the nail: 1. the field of operation is not clear without the assistance of a light source; 2. the lower end of the baffle is designed to be single-tooth, so that the facet joint is easy to burst when the baffle props against the lateral edge of the facet joint, and the screw insertion point of the pedicle screw is blocked by the baffle and the screw insertion is often influenced; 3. the horizontal baffle plate occupies the screw placing space, the screw placing in the right direction is influenced, and the defects that the dural sac and the nerve root are easily accidentally injured or the screw placing fails and the like are caused.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a take half vertebral plate drag hook of light source which characterized in that: the retractor comprises a retractor handle and an arc-shaped baffle plate connected with the retractor handle at a certain angle, wherein forward arc-shaped sharp teeth are arranged below the arc-shaped baffle plate, a U-shaped groove is formed between the two sharp teeth, a light guide optical fiber is arranged on the retractor handle, and the light guide optical fiber is connected with a light-emitting device arranged on the arc-shaped baffle plate.

Further:

the certain angle is 90-130 degrees.

The arc-shaped baffle is 1/3 circular arcs and is made of medical stainless steel.

The utility model discloses: 1. the incision anatomy is clearly visible with its own light source. 2. The lower end of the baffle is designed in a double-tooth U shape, the baffle directly straddles above the transverse process of the lumbar vertebra during operation, the needle point is quickly and accurately positioned when entering (the intersection point of the middle point of the transverse process and the outer side edge of the facet joint is the needle point of the vertebral pedicle), the double-pointed teeth support the facet joint process and the vertebral plate, the stress area is increased, the stress is uniform, and the facet joint process and the vertebral pedicle are not easy to crack. 3. The middle of the nail placing device is designed to be a U-shaped groove which does not block the punching and nail placing. 4. The baffle is designed into 1/3 circular arc shape to be matched with the arc surface at the tail end of the pedicle screw, so that the screw can be placed more smoothly and accurately. 5. The connection of the baffle and the handle is designed to be different in angle, so that the internal inclination angle can be determined conveniently when the nail is placed.

The utility model has the advantages that: has simple structure and convenient use, and can make the anatomical structure clear, quickly and accurately position the needle inlet point, quickly punch and quickly place the screw when the lumbar vertebral pedicle screw is placed.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 11 is a draw hook handle, 12 is an arc baffle, 13 is a forward arc sharp tooth, 14 is a U-shaped groove, 15 is a light-emitting device, and 17 is a light guide optical fiber.

Alpha denotes the angle between the flap and the handle.

Detailed Description

Referring to the attached drawings, the utility model relates to a take half vertebral plate drag hook of light source, its characterized in that: the retractor comprises a retractor handle 11 and an arc-shaped baffle 12 connected with the retractor handle at a certain angle alpha, wherein a front arc-shaped sharp tooth 13 is arranged below the arc-shaped baffle 12, a U-shaped groove 14 is formed between the two sharp teeth, a light guide optical fiber 17 is arranged on the retractor handle 11, and the light guide optical fiber 17 is connected with a light-emitting device arranged on the arc-shaped baffle 12.

In the embodiment of the present invention:

the certain angle alpha is 90-130 degrees.

The arc-shaped baffle plate 12 is in the shape of 1/3 circular arcs and is made of medical stainless steel.

The using method comprises the following steps: the incision is made layer by layer to expose, and the paravertebral muscles are stripped to the lateral margin of the facet joint by using a periosteum stripper. Will the utility model discloses ride and stride in lumbar vertebrae transverse process (the crossing point of transverse process mid point and facet joint outside edge is the pedicle of vertebral arch point of entry promptly), push down drag hook handle 11 and show pedicle of vertebral arch screw point of entry, then follow the point of entry and carry out the opening, open a way, the probe is probed, put into the pedicle of vertebral arch screw according to pedicle of vertebral arch axial axis.

Claims

1. The utility model provides a take half vertebral plate drag hook of light source which characterized in that: the retractor comprises a retractor handle (11) and an arc-shaped baffle (12) connected with the retractor handle at a certain angle alpha, wherein a front arc-shaped sharp tooth (13) is arranged below the arc-shaped baffle (12), a U-shaped groove (14) is formed between the two sharp teeth, a light guide optical fiber (17) is arranged on the retractor handle (11), and the light guide optical fiber (17) is connected with a light-emitting device arranged on the arc-shaped baffle (12).

2. The illuminated hemilaminar retractor of claim 1 wherein: the certain angle alpha is 90-130 degrees.

3. The illuminated hemilaminar retractor of claim 1 wherein: the arc-shaped baffle (12) is in the shape of 1/3 circular arcs and is made of medical stainless steel.