CN210990667U - Pedicle screw - Google Patents

Abstract

The utility model discloses a pedicle screw, this pedicle screw includes: the screw body is of a hollow structure; a detection section for detecting impedance of human tissue; a controller for identifying the type of the human tissue according to the impedance; wherein the detection part is connected with the controller and is arranged in the screw main body. The pedicle screw utilizes the detection part to detect the impedance information of the human tissue according to the different impedance of different human tissues; then, identifying the type of human tissue according to the impedance information through a controller; the process that the pedicle screw is implanted into human tissue can be monitored in real time, and the human tissue information can be fed back to a doctor in real time through the controller, so that the doctor is assisted to perform operation safely and conveniently.

Description

Pedicle screw

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a pedicle of vertebral arch screw.

Background

At present, pedicle screw fixation is one of common operations in spinal surgery, and the screw feeding technology is the key for successful operation. As the spinal cord and the nerves are distributed in the human tissue, once the pedicle screws are drilled into the spinal cord or the nerves in the process of implanting the pedicle screws, paralysis or dysfunction of the patient is easily caused, and even the life is threatened.

SUMMERY OF THE UTILITY MODEL

The present invention aims to solve at least one of the technical problems in the related art to a certain extent.

Therefore, an object of the utility model is to provide a pedicle screw can its process of implanting human tissue of real-time supervision to can feed back the human tissue information at its head place to the doctor in real time, and then supplementary doctor safety, conveniently carry out the operation work.

In order to achieve the above object, an embodiment of the present invention provides a pedicle screw, including:

the screw body is of a hollow structure;

a detection section for detecting impedance of human tissue;

a controller for identifying the type of the human tissue according to the impedance;

wherein the detection part is connected with the controller and is arranged in the screw main body.

According to the utility model discloses an embodiment still includes: the display assembly is connected with the controller; the display component is used for displaying the type of the human tissue.

According to the utility model discloses an embodiment, the controller, the display module is flash light or bee calling organ.

According to the utility model discloses an embodiment, still include the power, the power is used for detection portion and/or the controller provides the electric energy.

According to the utility model discloses an embodiment, the detection part includes electrode contact, wire and detection part main part, wherein, the electrode contact with the detection part main part links to each other, the first end of wire with the electrode contact links to each other, the second end of wire with the controller links to each other, just the wire is located at least partially in the detection part main part.

According to an embodiment of the present invention, the number of the electrode contacts is two, and the number of the wires is two.

According to the utility model discloses an embodiment, the head end of screw main part is provided with spacing portion, wherein, spacing portion is used for the restriction the detection part orientation the head end of screw main part removes.

According to the utility model discloses an embodiment, spacing portion is the ring form.

According to an embodiment of the utility model, the tail end of screw main part is provided with detachable lock nut.

According to an embodiment of the present invention, the locking nut and the screw main body are connected by a thread.

The embodiment of the utility model provides a pedicle screw, which utilizes a detection part to detect the impedance of human tissues according to the different impedances of different human tissues; then, identifying the type of human tissue according to the impedance through a controller; the process that the pedicle screw is implanted into human tissue can be monitored in real time, and the human tissue information can be fed back to a doctor in real time through the controller, so that the doctor is assisted to perform operation safely and conveniently.

Drawings

Fig. 1 is a schematic structural view of a pedicle screw according to an embodiment of the present disclosure;

FIG. 2 is an exploded view of the pedicle screw of FIG. 1;

fig. 3 is a schematic structural view of a detection part in a pedicle screw according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of a pedicle screw entering body tissue according to one embodiment of the present disclosure;

fig. 5 is a schematic structural view of a pedicle screw according to another embodiment of the present disclosure.

In the figure:

1-pedicle screws; 11-a screw body; 12-a limiting part; 13-a locking nut; 2-a detection section; 21-electrode contact; 22-a wire; 23-a detection part main body; 3-a controller; 4-cancellous bone; 5-cortical bone; 6-soft tissue; 7-a display component; 71-a light module; 72-a sound module; 8-power supply module.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Pedicle screws according to embodiments of the invention are described below with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of a pedicle screw according to an embodiment of the present disclosure; fig. 2 is an exploded view of the pedicle screw of fig. 1. As shown in fig. 1 and 2, the present embodiment provides a pedicle screw, comprising: screw body 11, detection part 2 and controller 3. The screw main body 11 is a hollow structure; a detection section 2 for detecting the impedance of human tissue; and the controller 3 is used for identifying the type of the human tissue according to the impedance. Wherein the detection part 2 is connected with the controller 3 and arranged in the screw body 11. It should be understood that the controller in this embodiment may be, but is not limited to being, a programmable logic controller.

Alternatively, the detection section 2 may be an impedance detection component. In particular, it may be an impedance electrode, such as: force transfer electrode blocks, etc. In some embodiments, it comprises: an electrode contact 21, a lead wire 22, and a detection part main body 23. Wherein the electrode contact 21 is connected to the detection part main body 23; a first end of the lead wire 22 is connected to the electrode contact 21, and a second end thereof is connected to the controller 3; further, the lead wire 22 is at least partially located in the detection section main body 23. It should be understood that, in the present embodiment, there are two electrode contacts 21 and two lead wires 22.

Further, the controller 3 may send a trigger signal to the detecting part 2 to trigger the detecting part 2 to detect the impedance of the human tissue in the process of detecting the impedance of the human tissue by the detecting part 2. It should be understood that the trigger signal is used to trigger the detection section 2 to detect the impedance of the human tissue.

Alternatively, the trigger signal may be a 5k-30k sine wave signal at a preset voltage. The preset voltage may be, but is not limited to, a low voltage, such as 12V, 24V, etc.

Further, in order to restrict the movement of the detection unit 2, a stopper 12 is provided at the head end of the screw body 11, and a detachable lock nut 13 is provided at the tail end of the screw body 11. The position-limiting part 12 may be fixedly connected to the screw main body 11, for example, both may be integrally designed. In addition, the limiting part 12 may be annular, and the center of the circle is the axis of the screw main body 11; specifically, it may extend toward the axial center of the screw body 11 by a certain distance from the inner wall of the head end of the screw body 11, which may be determined according to the actual situation, and is not limited herein. The locking nut 13 may be threadedly coupled to the rear end of the screw body 11.

It should be noted that, in the present embodiment, a passage for placing a wire may be provided in the lock nut 13, considering that the detection portion 2 and the controller 3 are connected by a wire.

Further, since different tissues in the human tissue have different impedances, when the controller 3 acquires the impedance detected by the detection section, the type of the human tissue can be identified based on the impedance. For example, cortical bone in human tissue, has an impedance in the interval 10-20; if the impedance acquired by the controller 3 is 12, it can be determined that the human tissue is cortical bone.

Further, pedicle screw 1 also includes a display assembly. In order to facilitate the doctor to know the condition of the human tissue in time, the controller 3 can also control the display component to display the type of the human tissue; the controller 3 and the display module may be connected by wire or wirelessly. Wherein, the display component can be a flash lamp and/or a buzzer. For example, the controller 3 may control the flash lamp to emit light corresponding to the type of the human tissue, e.g., the flash lamp may flash three times to determine that the type of the human tissue is cancellous bone.

Further, the controller 3 may also send the impedance to a terminal device for recording the detection result or facilitating other doctors to view. The controller 3 and the terminal device may be connected by wire or wirelessly.

It should be understood that the controller 3 of the present embodiment may be removably attached to the pedicle screw body 1, such as by adhesive; the material can be separately arranged at other places, and the material can be determined according to actual conditions, and is not limited herein.

Fig. 4 is a schematic view of a pedicle screw entering human tissue according to an embodiment of the present disclosure. As shown in fig. 4, the pedicle screw 1 is currently actually in the cancellous bone 4, and the detected impedance thereof can be identified as being within the impedance range of the cancellous bone 4. As the pedicle screw 1 continues to move into the body tissue, it will detect the impedance of the cortical bone 4, as well as the impedance of the soft tissue 5.

Fig. 5 is a schematic structural view of a pedicle screw according to another embodiment of the present disclosure. As shown in fig. 5, the pedicle screw includes a screw body 11, a detection part 2, a controller 3, a display assembly 7 and a power module 8. Wherein, the detection part 2 is used for detecting the biological characteristics of human tissues; the controller 3 is used for identifying the type of human tissue according to the biological characteristics; the power module 8 is used for providing power for the detection part 2, the controller 3 and the display component 7; the display assembly 7 includes a light module 71 and/or a sound module 72 for displaying the type of human tissue. The light module 71 may be a flash, and the sound module 72 may be a buzzer.

It should be noted that, in the pedicle screw provided in this embodiment, after the pedicle screw is implanted into a human tissue, the detachable nut 13 at the tail end of the pedicle screw may be removed, and the detection part 2 in the screw body 11 may be removed; further, the screw body 11 is left in the human tissue.

In summary, in the pedicle screw provided by the embodiment, the impedance of the human tissue is detected by the detection part according to different impedances of different human tissues; then, identifying the type of human tissue according to the impedance through a controller; the process that the pedicle screw is implanted into human tissue can be monitored in real time, and the human tissue information can be fed back to a doctor in real time through the controller, so that the doctor is assisted to perform operation safely and conveniently.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

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.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. A pedicle screw, comprising:

the screw body is of a hollow structure;

a detection section for detecting impedance of human tissue;

a controller for identifying the type of the human tissue according to the impedance;

wherein the detection part is connected with the controller and is arranged in the screw main body.

2. The pedicle screw as claimed in claim 1, further comprising: the display assembly is connected with the controller; the display component is used for displaying the type of the human tissue.

3. The pedicle screw according to claim 2, wherein the display component is a flashing light or a buzzer.

4. The pedicle screw according to claim 1, further comprising a power source for providing electrical power to the detection portion and/or the controller.

5. The pedicle screw according to any one of claims 1 to 4, wherein the sensing portion comprises an electrode contact, a lead and a sensing portion body, wherein the electrode contact is connected to the sensing portion body, a first end of the lead is connected to the electrode contact, a second end of the lead is connected to the controller, and the lead is at least partially located in the sensing portion body.

6. The pedicle screw according to claim 5, wherein there are two electrode contacts and two lead wires.

7. The pedicle screw according to any one of claims 1 to 4, wherein the head end of the screw body is provided with a limiting portion, wherein the limiting portion is configured to limit the movement of the detection portion towards the head end of the screw body.

8. The pedicle screw according to claim 7, wherein the stop portion is annular.

9. Pedicle screw according to claim 7, wherein the screw body is provided with a detachable locking nut at its trailing end.

10. The pedicle screw according to claim 9, wherein the locking nut is threadedly connected to the screw body.

Images