Vertebral pedicle puncture arc-shaped track

Abstract

A vertebral pedicle puncture arc-shaped track relates to the technical field of positioning devices and comprises a horizontally arranged guide rod, two arc-shaped guide frames are arranged on the guide rod in parallel in a sliding mode, each arc-shaped guide frame is provided with a puncture guide sleeve in a sliding mode in the arc direction of the arc-shaped guide frame, and the axis of each puncture guide sleeve is located in the radial direction of the arc-shaped guide frame. The utility model solves the problems that the device in the prior art cannot accurately quantify the angle and the operation risk of a green hand is high; and the problems that the tails of several nails on the same side are difficult to be on the same straight line when the nails are placed according to experience, and the follow-up titanium rod fixing is difficult are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning devices, in particular to an arc-shaped track for pedicle puncture. Background Art

[0002] During spinal surgery, pedicle puncture or screw placement is often required. Each vertebral pedicle has an inclination range. The doctor determines the degree of inclination of the vertebral body based on experience, and then estimates the inclination of the puncture tool by feeling during puncture. For novices, the estimated degree deviation during puncture will be higher, increasing the risk of damaging nearby nerves. There is currently no similar device. Electromagnetic navigation can guide puncture, but the principle and design are completely different.

[0003] The prior art discloses a patent with a publication number of CN220360449U, which includes a mounting frame, a guide rod is inserted horizontally and slidably on the mounting frame, a lateral measurement rod is inserted vertically and slidably on the support end of the guide rod, and a perpendicular anteroposterior measurement rod is also inserted horizontally and slidably on the support end of the guide rod, and the anteroposterior measurement rod can also be inserted horizontally and slidably on the lower end of the lateral measurement rod, and a rotating frame is rotatably provided on the mounting frame and arranged in parallel with the guide rod, and a guide seat is rotatably provided on the rotating frame and arranged perpendicularly with the rotation center. The utility model solves the problem that the traditional technique of endoscopic discectomy requires fluoroscopic positioning of the puncture needle point and puncture path, the current puncture is not accurate enough, the number of fluoroscopy is too many, the risk of dura mater sac and nerve root damage is increased, the operation time is prolonged, and the patient and medical staff are exposed to too much radiation, which affects their health.

[0004] As the existing technologies including the above patents are used, their shortcomings are gradually exposed, mainly in the following aspects:

[0005] There is a U-shaped opening at the tail of the pedicle screw. The pedicle screw is screwed into the pedicle, and the U-shaped opening is left outside the body in the opposite direction of the screw head. If you want to fix three adjacent vertebrae, two pedicle screws are placed in each vertebra, one on each side, so there are three nails on each side. Put the titanium rod into the U-shaped opening of the three nails, screw in the inner bolts to combine the nails and rods together, and the titanium rod indirectly fixes the vertebrae through the nails. The titanium rod is easy to put in when the three U-shaped openings are in a straight line and the inward inclination angles are in an arithmetic progression. Otherwise, it will be difficult to put in and will form undesirable stress.

[0006] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0007] In view of the defects in the prior art, the utility model solves the problems that the devices in the traditional technology are currently unable to accurately quantify the inclination angle of the pedicle screws, which leads to high risks for novices to operate; and that when the screws are placed based on experience, the tails of several screws on the same side are difficult to be in a straight line, which increases the difficulty of subsequent fixation of the titanium rod.

[0008] In order to solve the above problems, the utility model provides the following technical solutions:

[0009] The pedicle puncture arc track comprises a horizontally arranged guide rod, wherein the guide rod is provided with two arc guide frames for sliding in parallel, each arc guide frame is provided with a puncture guide sleeve for sliding along its arc direction, and the axis of the puncture guide sleeve is in the radial direction of the arc guide frame.

[0010] As an optimized solution, a side arc guide hole is formed on the side wall of the arc guide frame, a top arc guide hole connected to the side arc guide hole is formed on the top of the arc guide frame, an upper clamping plate that slides against the top of the arc guide frame is fixed to the upper end of the puncture guide sleeve, a lower clamping plate is slidably abutted against the top surface of the side arc guide hole, and the upper clamping plate and the lower clamping plate are connected by an adjusting bolt.

[0011] As an optimized solution, two support bars are respectively arranged side by side on the lower surface of the upper clamping plate and the upper surface of the lower clamping plate, and the opposite edges of the two support bars are in friction contact with the arc-shaped guide frame.

[0012] As an optimized solution, a through hole is provided on the upper clamping plate, and a threaded hole coaxially arranged with the through hole is provided on the lower clamping plate. The end of the adjusting bolt passes through the through hole and is connected to the threaded hole, and the handle end of the adjusting bolt abuts against the upper surface of the upper clamping plate.

[0013] As an optimized solution, the guide rod is slidably provided with a slider corresponding to each of the arc-shaped guide frames, a connecting block is fixedly connected to the lower end of the arc-shaped guide frame, and the slider is detachably connected to the connecting block.

[0014] As an optimized solution, a plug-in protrusion is horizontally fixed on the side wall of the sliding block, and a matching plug-in hole is opened on the side wall of the connecting block.

[0015] As an optimized solution, a first bolt is threadedly connected to the side wall of the connecting block, and the end of the first bolt abuts against the insertion protrusion.

[0016] As an optimized solution, a second bolt is threadedly connected to the sliding block, and the end of the second bolt abuts against the guide rod.

[0017] As an optimized solution, horizontal scale lines are provided on the guide rod along its extension direction.

[0018] As an optimized solution, the arc-shaped guide frame is provided with angle scale lines.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] Different arc guide frames are set with different distances from the puncture point as radius, and the puncture guide sleeve slides along the arc guide frame to ensure that the puncture direction can always point to the puncture point;

[0021] The curved guide surface is set at an angle to quantitatively guide the inclination direction;

[0022] The shape of the arc guide is an arc on a circle with the puncture point as the center. The radius of the circle is different for different patients with different physiques and weights. Therefore, the arc guide needs to be set in several specifications to meet the needs of different patients.

[0023] If the vertical radius of the circle pointing upward is 0 degrees, the arc of the left arc guide frame is from -40 to 0 degrees, and the arc of the right arc guide frame is from 0 to 40 degrees. The guide rod can be adjusted up and down and fixed at different heights to meet the needs of patients with different physiques. The distance of each position relative to the puncture point is different, which corresponds to different specifications of the arc guide frame. The arc guide frame can be slid along the guide rod to adjust the position and be fixed;

[0024] When the 0-degree line is perpendicular to the puncture point, the normal line of any point on the arc guide frame passes through the puncture point. A puncture guide sleeve is designed, which can slide along the surface of the arc guide frame and can be locked by setting the upper and lower splints. No matter how it slides, the axis of the puncture guide sleeve always passes through the puncture point. Angle scale lines are set on the surface of the arc guide frame to facilitate doctors to quantify the inclination angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0026] Figure 1 It is a structural schematic diagram of the utility model.

[0027] In the figure: 1-guide rod; 2-first bolt; 3-arc guide frame; 4-puncture guide sleeve; 5-upper clamp; 6-side arc guide hole; 7-top arc guide hole; 8-second bolt; 9-lower clamp; 10-adjusting bolt; 11-angle scale line; 12-horizontal scale line. DETAILED DESCRIPTION

[0028] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0029] like Figure 1 As shown, the pedicle puncture arc track includes a horizontally arranged guide rod 1, and the guide rod 1 is provided with two arc guide frames 3 sliding in parallel. Each arc guide frame 3 is provided with a puncture guide sleeve 4 sliding along its arc direction, and the axis of the puncture guide sleeve 4 is in the radial direction of the arc guide frame 3.

[0030] A side arc guide hole 6 is formed on the side wall of the arc guide frame 3, a top arc guide hole 7 connected to the side arc guide hole 6 is formed on the top of the arc guide frame 3, an upper clamping plate 5 is fixed to the upper end of the puncture guide sleeve 4, which slides against the top of the arc guide frame 3, and a lower clamping plate 9 is slidably abutted on the top surface of the side arc guide hole 6, and the upper clamping plate 5 and the lower clamping plate 9 are connected by an adjusting bolt 10.

[0031] Two support bars are arranged side by side on the lower surface of the upper clamping plate 5 and the upper surface of the lower clamping plate 9 , respectively. The opposite edges of the two support bars are in frictional contact with the arc-shaped guide frame 3 .

[0032] The upper clamping plate 5 is provided with a through hole, the lower clamping plate 9 is provided with a threaded hole coaxially arranged with the through hole, the end of the adjusting bolt 10 passes through the through hole and is connected with the threaded hole, and the handle end of the adjusting bolt 10 abuts against the upper surface of the upper clamping plate 5.

[0033] The guide rod 1 is slidably provided with a slider corresponding to each arc-shaped guide frame 3, and a connecting block is fixedly connected to the lower end of the arc-shaped guide frame 3, and the slider is detachably connected to the connecting block.

[0034] An inserting protrusion is horizontally fixed on the side wall of the sliding block, and a matching inserting hole is opened on the side wall of the connecting block.

[0035] A first bolt 2 is threadedly connected to the side wall of the connecting block, and the end of the first bolt 2 abuts against the insertion protrusion.

[0036] A second bolt 8 is threadedly connected to the slider, and the end of the second bolt 8 abuts against the guide rod 1 .

[0037] The guide rod 1 is provided with horizontal scale lines 12 along its extending direction.

[0038] The arc-shaped guide frame 3 is provided with angle scale lines 11 .

[0039] The working principle of this device is:

[0040] Different arc guide frames 3 are set with different distances from the puncture point as radius, and the puncture guide sleeve 4 slides along the arc guide frame 3 to ensure that the puncture direction can always point to the puncture point;

[0041] The surface of the arc guide frame 3 is set at an angle to quantitatively guide the inclination direction;

[0042] The shape of the arc guide frame 3 is an arc on a circle with the puncture point as the center. The radius of the circle is different for different patients with different physiques and weights. Therefore, the arc guide frame 3 needs to be set in several specifications to meet the needs of different patients.

[0043] If the vertical radius of the circle facing upward is 0 degrees, the arc of the left arc guide frame 3 is taken from about -40 to 0 degrees, and the arc of the right arc guide frame 3 is taken from about 0 to 40 degrees. The guide rod can be adjusted up and down and can be fixed at different heights to meet the needs of patients with different physiques. The distance of each position relative to the puncture point is different, which corresponds to different specifications of the arc guide frame 3. The arc guide frame 3 can be slid along the guide rod 1 to adjust the position and be fixed;

[0044] When the 0 degree line is perpendicular to the puncture point, the normal line of any point on the arc guide frame 3 passes through the puncture point. A puncture guide sleeve 4 is designed, which can slide along the surface of the arc guide frame 3 and can be locked by setting an upper clamp 5 and a lower clamp 9. No matter how it slides, the axis of the puncture guide sleeve 4 always passes through the puncture point. Angle scale lines 11 are set on the surface of the arc guide frame 3 to facilitate doctors to quantify the inclination angle.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. Pedicle puncture arc track, characterized by: The invention comprises a horizontally arranged guide rod (1), wherein the guide rod (1) is provided with two arc-shaped guide frames (3) for sliding in parallel, and each of the arc-shaped guide frames (3) is provided with a puncture guide sleeve (4) for sliding along its arc direction, and the axis of the puncture guide sleeve (4) is located in the radial direction of the arc-shaped guide frame (3).

2. The pedicle puncture arc track according to claim 1, characterized in that: A side arc guide hole (6) is formed on the side wall of the arc guide frame (3); a top arc guide hole (7) connected to the side arc guide hole (6) is formed on the top of the arc guide frame (3); an upper clamping plate (5) is fixedly connected to the upper end of the puncture guide sleeve (4) and is slidably abutted against the top of the arc guide frame (3); a lower clamping plate (9) is slidably abutted on the top surface of the side arc guide hole (6); and the upper clamping plate (5) and the lower clamping plate (9) are connected by an adjusting bolt (10).

3. The pedicle puncture arc track according to claim 2, characterized in that: Two support bars are arranged in parallel on the lower surface of the upper clamping plate (5) and the upper surface of the lower clamping plate (9), respectively, and the opposite edges of the two support bars are in frictional contact with the arc-shaped guide frame (3).

4. The pedicle puncture arc track according to claim 2, characterized in that: The upper clamping plate (5) is provided with a through hole, and the lower clamping plate (9) is provided with a threaded hole coaxially arranged with the through hole. The end of the adjusting bolt (10) passes through the through hole and is connected with the threaded hole, and the handle end of the adjusting bolt (10) abuts against the upper surface of the upper clamping plate (5).

5. The pedicle puncture arc track according to claim 1, characterized in that: The guide rod (1) is slidably provided with a slider corresponding to each of the arc-shaped guide frames (3); a connecting block is fixedly connected to the lower end of the arc-shaped guide frame (3); and the slider is detachably connected to the connecting block.

6. The pedicle puncture arc track according to claim 5, characterized in that: An inserting protrusion is horizontally fixedly connected to the side wall of the sliding block, and a matching inserting hole is opened on the side wall of the connecting block.

7. The pedicle puncture arc track according to claim 6, characterized in that: A first bolt (2) is threadedly connected to the side wall of the connection block, and the end of the first bolt (2) abuts against the insertion protrusion.

8. The pedicle puncture arc track according to claim 5, characterized in that: A second bolt (8) is threadedly connected to the sliding block, and the end of the second bolt (8) abuts against the guide rod (1).

9. The pedicle puncture arc track according to claim 1, characterized in that: The guide rod (1) is provided with horizontal scale lines (12) along its extension direction.

10. The pedicle puncture arc track according to claim 1, characterized in that: The arc-shaped guide frame (3) is provided with angle scale lines (11).

Images