A percutaneous minimally invasive lumbar pedicle screw fixation system and matching instruments

Abstract

The application discloses a kind of percutaneous minimally invasive lumbar pedicle screw fixation system and matching instruments, comprising: shell;Telescopic rod, telescopic rod fixedly connected shell side;Handle, telescopic rod is fixedly connected with handle at one end away from shell;Distraction mechanism, located in the shell interior;Strip-shaped plate, located in the shell exterior, and is connected with distraction mechanism;Detection positioning device, located in the two sides of strip-shaped plate;Distraction mechanism contains first recess, motor push rod, trapezoidal slider, special-shaped slider, second recess and first motor, the gap of the skeleton needing to be treated is opened by distraction mechanism, the operation space of medical staff is increased, and medical staff can better observe and handle pathological tissue, wherein the angle and interval of distraction mechanism can be flexibly adjusted, and the operation of subsequent operation is facilitated by maintaining the stability of vertebral body, wherein the detection lamp can display the situation of operation in real time, help medical staff to quickly locate, operate and correct, improve the efficiency of operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medicine, in particular to a percutaneous minimally invasive lumbar pedicle screw fixation system and matching instruments. BACKGROUND

[0002] A percutaneous minimally invasive lumbar pedicle screw fixation system and matching instruments is a percutaneous pedicle screw internal fixation surgery under image guidance, which is a surgery of implanting a pedicle screw rod system through punching on the skin, including pedicle screw implantation, connecting rod implantation, pedicle screw cap implantation, and necessary pedicle distraction or compression techniques during the surgery, and belongs to the field of minimally invasive percutaneous pedicle screw rod system internal fixation surgery.

[0003] During the surgery, medical staff need to perform the surgery of implanting a pedicle screw rod system through punching on the skin, and the pedicle distraction mechanism can play a supporting role, help maintain the stability of the vertebral body, increase the operation space of medical personnel, and make medical personnel better observe and reduce the damage to the surrounding tissues during the surgery and reduce the risk of the surgery. Therefore, a percutaneous minimally invasive lumbar pedicle screw fixation system and matching instruments is proposed. SUMMARY

[0004] The present application aims to provide a percutaneous minimally invasive lumbar pedicle screw fixation system and matching instruments to solve the problem of maintaining the stability of the vertebral body and reducing the damage to the surrounding tissues during the surgery and reducing the risk of the surgery as mentioned in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a percutaneous minimally invasive lumbar pedicle screw fixation system and matching instruments, comprising: a shell; a telescopic rod fixedly connected to one side of the shell; a handle fixedly connected to the end of the telescopic rod away from the shell; a distraction mechanism located inside the shell; a strip-shaped plate located outside the shell and connected with the distraction mechanism; a detection positioning device located on both sides of the strip-shaped plate; the distraction mechanism comprises a first groove, a motor push rod, a trapezoidal slide, a special-shaped slide, a second groove, and a first motor, the outer side wall of the shell is provided with the first groove, the first groove is fixedly connected with the motor push rod inside, the front end of the motor push rod is fixedly connected with the trapezoidal slide, the two sides of the shell are provided with the second groove, the special-shaped slide is slidingly connected to the opposite side of the second groove, the special-shaped slide is slidingly connected with the trapezoidal slide through the second groove, the outer side wall of the special-shaped slide is fixedly connected with the first motor, and the output shaft of the first motor is fixedly connected with the strip-shaped plate.

[0006] Preferably, the detection positioning device comprises a fourth groove, a second motor, a lead screw, a lead screw slider, a third motor and a detection lamp, the fourth groove is arranged on both sides of the strip-shaped plate, the second motor is fixedly connected inside the fourth groove, the output shaft of the second motor is fixedly connected with the lead screw, the end of the lead screw away from the second motor is rotatably connected with the inner wall of the fourth groove, the outer wall of the lead screw is threadedly connected with the lead screw slider, the outer wall of the lead screw slider is fixedly connected with the third motor, and the output shaft of the third motor is fixedly connected with the detection lamp.

[0007] Preferably, the trapezoidal slider is fixedly connected with a measuring instrument on one side, and the side wall of the measuring instrument is marked with scale lines.

[0008] Preferably, the outer wall of the shell is fixedly connected with an air bag, and the measuring instrument is slidably connected with the air bag through the air bag.

[0009] Preferably, the special-shaped slider is provided with a third groove on opposite sides, the trapezoidal slider is fixedly connected with a square block on both sides, and the special-shaped slider is slidably connected with the trapezoidal slider.

[0010] Preferably, the upper surface of the handle is fixedly connected with a protective sleeve, so as to increase friction and protect the stability of use.

[0011] Preferably, the fourth groove is fixedly connected with a sliding rod on one side inside the fourth groove, the sliding rod is arranged in parallel with the lead screw, and the side surface of the lead screw slider is provided with a sliding rod.

[0012] Compared with the prior art, the present application has the following advantages:

[0013] 1. During the operation process, the tool is placed in the bone, the trapezoidal slider is pushed by the motor push rod, the special-shaped slider is driven to slide, the opening mechanism opens the gap of the bone to be treated, the operation space of the medical staff is increased, the opened bone gap can be better observed and treated by the medical staff, the angle and distance of the pedicle opening mechanism can be flexibly adjusted, and the stability of the vertebral body is maintained to facilitate the subsequent implantation of the pedicle screw.

[0014] 2. During the operation process, the detection lamp enters the human body along with the tool, the medical staff can clearly understand the specific situation of the operation site, reduce the damage during the operation, and improve the success rate and safety of the operation; the detection lamp can also reduce the uncertainty and repeated inspection during the operation process, and reduce the radiation to the patient's body; the detection lamp can display the operation in real time, help the medical staff to quickly locate, operate and correct, and improve the operation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0016] Figure 2 It is a schematic diagram of the opening mechanism structure of the present application.

[0017] Figure 3 Structure diagram of the detecting and positioning device of the present application;

[0018] Figure 4 Structure diagram of the trapezoidal slider of the present application.

[0019] In the figure: 1, outer shell; 2, telescopic rod; 3, handle; 4, opening mechanism; 401, first groove; 402, motor push rod; 403, trapezoidal slider; 404, special-shaped slider; 405, second groove; 406, first motor; 407, third groove; 408, square block; 409, air bag; 410, measuring instrument; 411, air bag block; 5, strip plate; 6, detecting and positioning device; 601, fourth groove; 602, second motor; 603, screw rod; 604, screw rod sliding block; 605, third motor; 606, detecting lamp; 607, sliding rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0021] Please refer to Figure 2The application provides a percutaneous minimally invasive lumbar pedicle screw fixation system and matching instruments, which are characterized by the following: a shell 1; a telescopic rod 2 fixedly connected to one side of the shell 1; a handle 3 fixedly connected to the end of the telescopic rod 2 away from the shell 1; a distraction mechanism 4 located inside the shell 1; a strip-shaped plate 5 located outside the shell 1 and connected with the distraction mechanism 4; a detection positioning device 6 located on both sides of the strip-shaped plate 5; the distraction mechanism 4 comprises a first recess 401, a motor push rod 402, a trapezoidal slide block 403, a special-shaped slide block 404, a second recess 405 and a first motor 406; the outer side wall of the shell 1 is provided with the first recess 401, the first recess 401 is fixedly connected with the motor push rod 402 inside, the front end of the motor push rod 402 is fixedly connected with the trapezoidal slide block 403, wherein the motor push rod 402 drives the trapezoidal slide block 403 to slide the special-shaped slide block 404 to both sides, the two sides of the shell 1 are provided with the second recess 405, the second recess 405 is slidably connected with the special-shaped slide block 404 on the opposite side, the special-shaped slide block 404 is slidably connected with the trapezoidal slide block 403 through the second recess 405, the outer side wall of the special-shaped slide block 404 is fixedly connected with the first motor 406, and the output shaft of the first motor 406 is fixedly connected with the strip-shaped plate 5, wherein the sliding of the special-shaped slide block 404 drives the strip-shaped plate 5 to be distracted, the vertebral body and its stability are supported, the first motor 406 can rotate the strip-shaped plate 5, the angle of the strip-shaped plate 5 is flexibly adjusted, and the subsequent pedicle screw implantation and the like after the operation is facilitated.

[0022] Please refer to Figures 1-4 The upper surface of the handle 3 is fixedly connected with a protective sleeve, the friction is increased, and the stability of use is protected; one side of the trapezoidal slide block 403 is fixedly connected with a measuring instrument 410, the side wall of the measuring instrument 410 is marked with a scale line, medical staff can more accurately perform an operation; the outer side wall of the shell 1 is fixedly connected with an air bag 409, the measuring instrument 410 is slidably connected with an air bag block 411 through the air bag 409, wherein the air bag 409 buffers the motor push rod 402 from being too fast, the opposite side of the special-shaped slide block 404 is provided with a third recess 407, the two sides of the trapezoidal slide block 403 are fixedly connected with square blocks 408, and the special-shaped slide block 404 is slidably connected with the trapezoidal slide block 403; one side of the fourth recess 601 is fixedly connected with a sliding rod 607, and the sliding rod 607 is arranged in parallel with the lead screw 603, and the side of the lead screw slide block 604 is provided with a sliding connection with the sliding rod 607.

[0023] Please refer to Figure 3The detection positioning device 6 comprises a fourth groove 601, a second motor 602, a lead screw 603, a lead screw sliding block 604, a third motor 605 and a detection lamp 606. The fourth groove 601 is arranged on both sides of the strip-shaped plate 5, and the second motor 602 is fixedly connected in the fourth groove 601. The output shaft of the second motor 602 is fixedly connected with the lead screw 603, and the lead screw 603 is rotatably connected with the inner wall of the fourth groove 601 at the end away from the second motor 602. The lead screw sliding block 604 is threadedly connected with the outer wall of the lead screw 603. The second motor 602 rotates the lead screw 603, so that the detection lamp 606 on the lead screw sliding block 604 can move and explore in the human body, thereby increasing the accuracy of the operation and the clarity of the internal environment of the human body. The third motor 605 is fixedly connected with the outer wall of the lead screw sliding block 604, and the output shaft of the third motor 605 is fixedly connected with the detection lamp 606. The third motor 605 rotates the detection lamp 606, so that the clarity around the injured vertebral body is increased, and the damage in the operation process is reduced. The flexible use of the detection lamp 606 can display the operation in real time, help medical staff to quickly locate, operate and correct, and improve the operation efficiency.

[0024] Working principle: during the operation, after the soft tissue on both sides is expanded to expose the transverse process, the user first holds the handle 3, adjusts the telescopic rod 2, places the unexpanded tool in the vertebral body to be treated, and pushes the trapezoidal sliding block 403 through the motor push rod 402 after reaching the destination. In order to prevent the motor push rod 402 from moving too fast, the air bag 409 is used for buffering. The driving of the trapezoidal sliding block 403 makes the special-shaped sliding block 404 slide to both sides, drives the strip-shaped plate 5 to expand the vertebral body, and adjusts the distance between the vertebral bodies and fixes them according to the measuring instrument 410. The detection positioning device 6 arranged on the strip-shaped plate 5 rotates the lead screw 603 through the second motor 602, so that the detection lamp 606 on the lead screw sliding block 604 can move in the fourth groove 601. The third motor 605 rotates the detection lamp 606, so that the detection lamp 606 moves and rotates in the human body, increases the accuracy of the operation and the clarity of the internal environment of the human body, and provides positioning for subsequent implantation of pedicle screws and the like.

[0025] It should be noted that, in the present document, relational terms such as first and second and the like can 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. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0026] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A percutaneous minimally invasive lumbar pedicle screw fixation system and instruments, characterized in that, Include: The shell (1); Telescopic rod (2), telescopic rod (2) fixed connection shell (1) one side; Handle (3), telescopic rod (2) fixedly connected with handle (3) at one end away from the shell (1); Open mechanism (4), located inside the shell (1); Strip plate (5), located outside the shell (1), and connected with the open mechanism (4); Detection positioning device (6), located on both sides of the strip plate (5); The open mechanism (4) contains first recess (401), motor push rod (402), trapezoidal slider (403), special-shaped slider (404), second recess (405) and first motor (406), the inside wall of the shell (1) is provided with first recess (401), the inside of first recess (401) is fixedly connected with motor push rod (402), the front end of motor push rod (402) is fixedly connected with trapezoidal slider (403), the two sides of the shell (1) are provided with second recess (405), the opposite side of second recess (405) is slidably connected with special-shaped slider (404), the special-shaped slider (404) penetrates the second recess (405) and is slidably connected with the trapezoidal slider (403), the outside wall of the special-shaped slider (404) is fixedly connected with the first motor (406), and the output shaft of the first motor (406) is fixedly connected with the strip plate (5); The detection positioning device (6) contains fourth recess (601), second motor (602), screw rod (603), screw rod slider (604), third motor (605) and detection lamp (606), the two sides of the strip plate (5) are provided with fourth recess (601), the inside of fourth recess (601) is fixedly connected with second motor (602), the output shaft of second motor (602) is fixedly connected with screw rod (603), one end of screw rod (603) away from second motor (602) is rotatably connected with the inner wall of fourth recess (601), the outside wall of screw rod (603) is threadedly connected with screw rod slider (604), the outside wall of screw rod slider (604) is fixedly connected with third motor (605), and the output shaft of third motor (605) is fixedly connected with detection lamp (606).

2. The minimally invasive trans-soft-tissue lumbar pedicle screw fixation system and the matching instruments according to claim 1, characterized in that: The trapezoidal slider (403) is fixedly connected with the measuring instrument (410) on one side, and the side wall of the measuring instrument (410) is marked with a scale line.

3. The minimally invasive trans-soft-tissue lumbar pedicle screw fixation system and its accessory instruments of claim 2, wherein: The outside wall of the shell (1) is fixedly connected with the air bag (409), and the measuring instrument (410) penetrates the air bag (409) and is slidably connected with the air bag block (411).

4. The minimally invasive trans-soft-tissue lumbar pedicle screw fixation system and its accessory instruments according to claim 1, characterized in that: The opposite side of the special-shaped slider (404) is provided with a third recess (407), and the two sides of the trapezoidal slider (403) are fixedly connected with square blocks (408), and the special-shaped slider (404) is slidably connected with the trapezoidal slider (403).

5. The minimally invasive trans-soft-tissue lumbar pedicle screw fixation system and kit thereof according to claim 1, wherein: The upper surface of the handle (3) is fixedly connected with a protective sleeve, which increases the friction and protects the stability of use.

6. The minimally invasive trans-soft-tissue lumbar pedicle screw fixation system and kit thereof according to claim 1, wherein: The inside of the fourth recess (601) is fixedly connected with a slide rod (607), and the slide rod (607) is arranged in parallel with the screw rod (603), and the side surface of the screw rod slider (604) is arranged in sliding connection with the slide rod (607).

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