CN214208472U

CN214208472U - Nailing device for pedicle tunnel formation

Info

Publication number: CN214208472U
Application number: CN202023070876.3U
Authority: CN
Inventors: 石斌
Original assignee: First Medical Center of PLA General Hospital
Current assignee: First Medical Center of PLA General Hospital
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-09-17
Anticipated expiration: 2030-12-18

Abstract

The utility model provides a nail is gone into device for formation of pedicle of vertebral arch passageway, it includes: a sleeve and a needle member; the sleeve comprises a vertically formed barrel body, and handles are formed at the upper end of the barrel body in a manner of extending towards two sides; the needle component comprises a limiting cap and a needle body; the limiting cap is formed into a cylinder, a cylindrical cavity is formed at the lower end of the limiting cap, and a threaded hole is formed at the upper end of the limiting cap; the threaded hole is communicated with the cavity; the diameter of the cavity is larger than that of the threaded hole; the needle body is formed into a cylinder shape, the lower end of the needle body is a tip end, and an external thread section is formed at the upper part of the needle body; a plurality of scale marks are formed in the middle of the needle body; the threaded hole of the limiting cap is combined on the external thread section of the needle body; the diameter of the needle body is smaller than the inner diameter of the cylinder body; the outer diameter of the limiting cap is larger than the inner diameter of the cylinder body; the needle body of the needle component can be inserted into the tube body of the sleeve in a pulling way; the limiting cap is positioned above the handle of the sleeve.

Description

Nailing device for pedicle tunnel formation

Technical Field

The utility model relates to a medical instrument, in particular to a nailing device for the formation of a vertebral arch channel.

Background

The percutaneous pedicle puncture technology has become a basic technical means of minimally invasive spine surgery, and has the advantages of small incision, less bleeding, small interference on nerve and muscle, low infection rate and the like. Complications include surgical complications resulting from poor penetration or poor placement of the pedicle cortex, including nerve and vessel damage, visceral damage, and decreased vertebral body stability.

The traditional method is operated by hands under perspective monitoring, and has the defects that in order to obtain the optimal puncture position, medical staff often needs to be exposed to rays for repeated adjustment operation, and the medical staff and a patient are exposed to more radiation exposure. The technology of applying robot-assisted artificial intelligence to pedicle screw implantation is mature day by day, the screw implantation is more accurate and safer, the ray exposure in the operation of doctors and patients is obviously reduced, and the operation is more minimally invasive.

Before the screw is implanted, a needle needs to be manually driven into the pedicle arch according to a needle inserting point determined by the auxiliary artificial intelligence of the robot. However, even if the depth to which the needle needs to be advanced is known in advance by hammering the nail, it is still difficult to accurately control the depth to which the needle actually advances. Once too shallow or too deep, repeated confirmation through intraoperative fluoroscopy is required, and multiple operations are performed until the depth of the needle entry meets the requirement, and the radiation exposure of the patient and medical staff is increased during repeated adjustment.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a pedicle screw device for pedicle screw channel formation, which facilitates accurate control of the depth of the pedicle screw.

The utility model discloses a nail is gone into device for formation of pedicle of vertebral arch passageway, it includes: a sleeve and a needle member;

the sleeve comprises a vertically formed barrel body, and handles are formed at the upper end of the barrel body in a manner of extending towards two sides;

the needle component comprises a limiting cap and a needle body;

the limiting cap is formed into a cylinder, a cylindrical cavity is formed at the lower end of the limiting cap, and a threaded hole is formed at the upper end of the limiting cap; the threaded hole is communicated with the cavity; the diameter of the cavity is larger than that of the threaded hole;

the needle body is formed into a cylinder shape, the lower end of the needle body is a tip end, and an external thread section is formed at the upper part of the needle body; a plurality of scale marks are formed in the middle of the needle body;

the threaded hole of the limiting cap is combined on the external thread section of the needle body;

the diameter of the needle body is smaller than the inner diameter of the cylinder body; the outer diameter of the limiting cap is larger than the inner diameter of the cylinder body;

the needle body of the needle component can be inserted into the tube body of the sleeve in a pulling way; the limiting cap is positioned above the handle of the sleeve.

Preferably, the lowermost one of the plurality of tick marks is a 0 tick mark.

Preferably, the needle body is inserted into the barrel body and the tip is flush with the lower end of the barrel body, the 0 graduation line is flush with the upper end of the barrel body.

Preferably, the threaded hole is located at a central position of the cylindrical cavity.

Through the utility model discloses a nail into device for formation of pedicle of vertebral arch passageway, after the predetermined degree of depth was nailed into to the syringe needle, spacing cap on it can support and lean on the handle, prevents the needle integument from further nailing into, can accurately control the degree of depth that the needle body was nailed into from this.

Drawings

Fig. 1 is a schematic structural view of a nailing device for pedicle tunnel formation according to the present invention;

FIG. 2 is a schematic view of the internal structure of the nailing device for pedicle tunnel formation of FIG. 1;

FIG. 3 is a front view of the sleeve of the nailing device for pedicle tunnel formation of FIG. 1;

FIG. 4 is a cross-sectional structural view of the sleeve of FIG. 3;

FIG. 5 is a schematic top view of the sleeve of FIG. 3;

FIG. 6 is a front view of the needle member of the nailing device for pedicle tunnel formation of FIG. 1;

FIG. 7 is an internal structural view of the needle member of FIG. 6;

FIG. 8 is a front view of the stop cap of the needle member of FIG. 6;

FIG. 9 is a cross-sectional structural view of the retaining cap of the needle member of FIG. 6;

FIG. 10 is a schematic top view of the retaining cap of the needle member of FIG. 6;

FIG. 11 is a bottom view of the stopper cap of the needle member of FIG. 6;

fig. 12 is a front view structural schematic diagram of a needle body of the needle member of fig. 6.

Detailed Description

The following describes in detail the nailing device for pedicle tunnel formation according to the present invention with reference to the accompanying drawings.

The utility model discloses a nail is gone into device for formation of pedicle of vertebral arch passageway, it includes: a sleeve 10 and a needle member 20.

The sleeve 10 includes a vertically formed barrel body 12, and a handle 11 is formed at an upper end of the barrel body 12 to extend to both sides.

The needle member 20 comprises a stop cap 21 and a needle body.

The limit cap 21 is formed as a cylinder, a cylindrical cavity 22 is formed at the lower end thereof, and a threaded hole 26 is formed at the upper end thereof; the threaded bore 26 communicates with the cavity 22; the diameter of the cavity 22 is greater than the diameter of the threaded hole;

the needle body is formed into a cylinder shape, the lower end is a tip 25, and the upper part of the needle body is provided with an external thread section 23; the middle part of the needle body is provided with a plurality of scale marks 24.

The threaded hole 26 of the stop cap 21 is engaged on the external threaded section 23 of the needle body.

The diameter of the needle body is smaller than the inner diameter of the cylinder body 12; the outer diameter of the stopper cap 21 is larger than the inner diameter of the cartridge body 12.

The needle body of the needle member 20 is inserted into the barrel body 12 of the sleeve 10 so as to be able to be pulled out; the stop cap 21 is located above the handle 11 of the sleeve 10.

The lowermost of the plurality of tick marks 24 is the 0 tick mark.

The needle body is inserted into the barrel body 12 and when the tip 25 is flush with the lower end of the barrel body, the 0 scale mark is flush with the upper end of the barrel body 12.

The threaded hole 26 is located in the center of the cavity 22.

When in use, the limit cap is adjusted according to the depth of the needle insertion required; for example, when the depth of the needle required to be inserted is measured to be 3cm through planning before the operation, the lower end of the limiting cap is adjusted to the position of a graduation line representing 3 cm. Then, the sleeve with the inner core is placed into a needle inserting position determined by a robot, the inner core is pulled out (the step is completely the same as the prior art), the needle body is inserted into the sleeve body of the sleeve, the upper end of the needle body is knocked by a hammer, and the tip end of the needle body enters a bone through a puncture point determined by the robot in advance; when the preset depth is reached, the limiting cap is abutted against the upper end of the barrel body, so that the needle body cannot enter a bone further.

Claims

1. A nailing device for pedicle tunnel formation, comprising: a sleeve and a needle member;

the needle component comprises a limiting cap and a needle body;

2. The nailing device for pedicle tunnel formation according to claim 1, wherein:

the lowermost scale mark of the plurality of scale marks is a scale mark 0.

3. The nailing device for pedicle arch channel formation as claimed in claim 2, wherein:

when the needle body is inserted into the tube body and the tip end is flush with the lower end of the tube body, the 0 scale mark is flush with the upper end of the tube body.

4. The nailing device for pedicle tunnel formation according to claim 1, wherein:

the threaded hole is located in the center of the cavity.