CN211187500U - Pedicle screw placing wrench - Google Patents
Pedicle screw placing wrench Download PDFInfo
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- CN211187500U CN211187500U CN201920971914.0U CN201920971914U CN211187500U CN 211187500 U CN211187500 U CN 211187500U CN 201920971914 U CN201920971914 U CN 201920971914U CN 211187500 U CN211187500 U CN 211187500U
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- pedicle screw
- wrench
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- torque sensor
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Abstract
The utility model discloses a nail spanner is put to pedicle of vertebral arch, the pedicle of vertebral arch is put nail spanner and is included: the pedicle screw wrench comprises a wrench body, wherein one end of the wrench body is provided with a connecting part for connecting a pedicle screw; the torque sensor is arranged on the wrench body and used for detecting the torque borne by the pedicle screw when being placed into a human body; the warning device is used for sending a warning signal; the torque sensor and the warning device are connected with the control device, and the control device controls the warning device to send out warning signals according to the torque detected by the torque sensor. The utility model discloses a nail spanner is put to pedicle of vertebral arch can assist the operation doctor safe, conveniently develop the operation to reduce the operation risk.
Description
Technical Field
The utility model belongs to the technical field of the medical instrument technique and specifically relates to a nail spanner is put to pedicle of vertebral arch.
Background
At present, the internal fixation of the pedicle screw is one of the common operations in the spinal surgery, and the screw feeding technology is the key for successful operation. In the process of implanting the pedicle screw, spinal cords and nerves are distributed around the pedicle screw, and once the screw is drilled into the spinal cords or the nerves, paralysis or dysfunction of a patient can be easily caused, and even the life can be threatened.
However, the current placement of the pedicle screws is mainly controlled according to the hand feeling and experience of the operating doctor and the influence monitoring, so that the pedicle screws are easy to drill into the spinal cord or nerves, and the operation risk is high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. For this reason, an object of the utility model is to provide a pedicle of vertebral arch puts nail spanner, pedicle of vertebral arch puts nail spanner through setting up torque sensor and warning device, utilizes different tissue hardness such as cancellous bone, cortical bone, soft tissue, spinal cord, blood in the human body different, and torque sensor real-time supervision pedicle of vertebral arch screw puts into the in-process, and the doctor puts the tightening moment of nail to give doctor feedback information in real time, when having an emergency, warning device in time sends warning signal for the doctor, supplementary operation doctor safety, conveniently develop the operation.
According to the utility model discloses nail spanner is put to pedicle of vertebral arch, include: the pedicle screw wrench comprises a wrench body, wherein one end of the wrench body is provided with a connecting part for connecting a pedicle screw; the torque sensor is arranged on the wrench body and used for detecting the torque borne by the pedicle screw when being placed into a human body; the warning device is used for sending a warning signal; the torque sensor and the warning device are connected with the control device, and the control device controls the warning device to send out warning signals according to the torque detected by the torque sensor.
According to the utility model discloses pedicle of vertebral arch puts nail spanner, through setting up torque sensor and warning device, utilize different tissue hardness such as cancellous bone, cortical bone, soft tissue, spinal cord, blood in the human body different, torque sensor real-time supervision pedicle of vertebral arch screw puts into the in-process, the doctor puts the tightening torque of nail to give doctor feedback information in real time, when having an emergency, warning device in time sends the signal of warning for the doctor, supplementary operation doctor safety, conveniently develop the operation.
Additionally, according to the utility model discloses a pedicle of vertebral arch puts nail spanner can also have following additional technical characterstic:
according to an embodiment of the present invention, the warning device includes a sound generating device.
According to an embodiment of the invention, the warning device comprises a light emitting device.
According to an embodiment of the present invention, the warning device includes a sound generating device and a light emitting device, the sound generating device and the light emitting device are connected in series or in parallel.
According to the utility model discloses an embodiment still includes the gyroscope, the gyroscope is located on the spanner body, the gyroscope with controlling means links to each other in order to detect the angle and the number of turns of pedicle screw at human internal rotation.
According to the utility model discloses an embodiment, the device of warning can send low danger warning signal and high danger warning signal.
Optionally, when the torque value detected by the torque sensor is within a first preset torque range, the warning device sends out a low-risk warning signal; when the torque value detected by the torque sensor is within a second preset torque range, the warning device sends a high-risk warning signal, wherein the first preset torque range is a torque value borne by the pedicle screw when the pedicle screw is placed in a cortical bone; the second preset torque range is a torque value borne by the pedicle screw when the pedicle screw is placed in soft tissue.
Optionally, the pedicle screw placing wrench further comprises a gyroscope, the gyroscope is arranged on the wrench body, the gyroscope is connected with the control device to detect the rotation angle and the number of turns of the pedicle screw in the human body, the control device takes the average value of the torque detected by the torque sensor when the pedicle screw rotates in the cancellous bone for the nth turn as a reference torque value, the first preset torque range is a range in which the torque value is greater than the reference torque value, the second preset torque range is a range in which the torque value is less than the reference torque value, and N is an integer greater than or equal to 1.
According to the utility model discloses an embodiment, the spanner body includes the handle and the body of rod, the handle with connecting portion are located respectively the both ends of the body of rod.
Optionally, the torque sensor is disposed between the handle and the shaft.
According to the utility model discloses an embodiment still includes display terminal, display terminal with controlling means links to each other.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view of a pedicle screw wrench according to an embodiment of the present invention;
fig. 2 is a schematic view of a pedicle screw placing wrench according to an embodiment of the present invention;
fig. 3 is a schematic view of a control system of the pedicle screw wrench according to an embodiment of the present invention.
Reference numerals:
a nail placing wrench 100;
a wrench body 1; a handle 11; a rod body 12; a connecting portion 121;
a torque sensor 2; a sound generating device 3; a light-emitting device 4; a control device 5; a gyroscope 6; a power supply 7; a switch 8; a wireless connection module 9;
a screw 200; cancellous bone 300; a cortical bone 400; the soft tissue 500.
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 only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
A pedicle screw driver 100 according to an embodiment of the invention will be described with reference to fig. 1 to 3
First, it should be noted that the pedicle screw driver 100 is used to drive the pedicle screws 200 into the cancellous bone 300 of the vertebra, which contains spinal nerves, soft tissues 500, muscles and blood vessels, and the cancellous bone 300 and the cortical bone 400 are arranged inside the vertebra itself, so as to perform pedicle screw internal fixation. The procedure is required to ensure that the screws 200 are in cancellous bone 300 and cannot pass out of cortical bone 400 to the spinal cord or soft tissue 500. Cortical bone 400 has the greatest hardness, soft tissue 500, muscles, blood vessels, and spinal cord are softer, and cancellous bone 300 has a hardness in between.
Referring to fig. 1 to 3, a pedicle screw wrench 100 according to an embodiment of the present invention includes: spanner body 1, torque sensor 2, warning device and controlling means 5.
One end of the wrench body 1 is provided with a connecting part 121 for connecting the pedicle screw 200, wherein the structure of the connecting part 121 can be set arbitrarily as required as long as the pedicle screw 200 can be connected to one end of the wrench body 1, for example, the connecting part 121 can form an insertion protrusion, and at this time, a nut cap of the pedicle screw 200 is provided with an insertion groove in insertion fit with the insertion protrusion; or the connecting portion 121 may form an insertion groove, and an insertion protrusion engaged with the insertion groove is provided on the nut of the pedicle screw 200. Preferably, the cross section of the insertion protrusion and the insertion groove is polygonal, such as triangular, quadrangular, pentagonal, hexagonal, or the like.
The torque sensor 2 is arranged on the wrench body 1, the torque sensor 2 is used for detecting the torque applied to the pedicle screw 200 when the pedicle screw 200 is placed into a human body, and the torque applied to the pedicle screw 200 by an operator through the wrench body 1. It is understood that the torque applied to screw the pedicle screw 200 in the cancellous bone 300 is between the torque applied to screw the pedicle screw 200 in the cortical bone 400 and the torque applied to screw the pedicle screw 200 in the soft tissue 500, and more specifically, the torque applied to screw the pedicle screw 200 in the cancellous bone 300 is less than the torque applied to screw the pedicle screw 200 in the cortical bone 400, and the torque applied to screw the pedicle screw 200 in the cancellous bone 300 is greater than the torque applied to screw the pedicle screw 200 in the soft tissue 500. During the operation, the torque value detected by the torque sensor 2 can be used to determine at which part (cancellous bone 300, cortical bone 400 or soft tissue 500) the pedicle screw 200 is screwed.
The warning device is used for sending out the signal of warning, torque sensor 2 and the device of warning all link to each other with controlling means 5, torque sensor 2 and controlling means 5 link to each other promptly, the device of warning also links to each other with controlling means 5, controlling means 5 controls the device of warning according to the moment of torsion that torque sensor 2 detected and sends out the signal of warning, specifically, judge through the torque value that torque sensor 2 detected, when pedicle of vertebral arch screw 200 puts into cortex bone 400 or soft tissue 500, the device of warning sends out the signal of warning, the operation doctor adjusts the operation state according to the signal of warning, thereby reduce the operation risk.
According to the utility model discloses pedicle of vertebral arch puts nail spanner 100, through setting up torque sensor 2 and warning device, utilize cancellous bone 300 in the human body, cortical bone 400, soft tissue 500, spinal cord, different tissue hardness such as blood are different, torque sensor 2 real-time supervision pedicle of vertebral arch screw 200 puts into the in-process, the doctor puts the tightening moment of nail, and give doctor feedback information in real time, when risking, warning device in time sends alarm signal for the doctor, supplementary operation doctor safety, conveniently develop the operation.
In an embodiment of the present invention, the warning device includes the sound generating device 3, so that the warning device can send sound to remind the surgeon through the sound generating device 3. Alternatively, the sound emitting device 3 may be a horn.
In one embodiment of the present invention, the warning device includes the light emitting device 4, so that the warning device can remind the surgeon by the light emitting device 4 emitting light. Alternatively, the light emitting device 4 may be a lamp.
The utility model discloses an in an embodiment, the warning device includes sound generating mechanism 3 and illuminator 4, and the warning device not only can remind the doctor through sound generating mechanism 3 sounding like this, can also give out light through illuminator 4 and remind the doctor, makes the doctor can acquire the signal of warning faster, more in time like this.
Optionally, the sound generating device 3 and the light emitting device 4 are connected in series, so that the warning device can simultaneously generate an audible alarm and a light alarm, and the purpose of reminding can be achieved more effectively.
Optionally, the sounding device 3 and the light-emitting device 4 are connected in parallel, and when one of the sounding device 3 and the light-emitting device 4 is damaged, the normal operation of the other one is not affected, so that the reliability of warning and reminding of the warning device can be ensured.
In an embodiment of the present invention, the pedicle screw wrench 100 further includes a gyroscope 6, the gyroscope 6 is disposed on the wrench body 1, and the gyroscope 6 is connected to the control device 5 to detect the rotation angle and the number of turns of the pedicle screw 200 in the human body. In the process that the pedicle screw wrench 100 is used for screwing the pedicle screw 200, the control device 5 acquires signals of the torque sensor 2 and the gyroscope 6, and in the process that the pedicle screw 200 is screwed, the gyroscope 6 has two functions, so that on one hand, the rotation angle and the rotation number of the pedicle screw 200 can be judged, and on the other hand, the control device 5 only acquires the rotating dynamic torque of the pedicle screw 200. By arranging the gyroscope 6, the operation progress can be better controlled by an operator.
In an embodiment of the utility model, the warning device can send low-risk warning signal and high-risk warning signal, so that the operating doctor can better judge the operation state, and the success rate of the operation is further improved. For example, when the warning device gives out a low-risk warning signal, the sounding device 3 can give out low-frequency sound, and the light-emitting device 4 can give out yellow light; when the warning device sends out a high-risk warning signal, the sound generating device 3 can generate high-frequency sound, and the light emitting device 4 can generate red light.
Optionally, when the torque value detected by the torque sensor 2 is within a first preset torque range, the warning device sends out a low-risk warning signal; when the torque value detected by the torque sensor 2 is within a second preset torque range, the warning device sends a high-risk warning signal, wherein the first preset torque range is a torque value borne by the pedicle screw 200 when the pedicle screw is placed in the cortical bone 400; the second predetermined torque range is the amount of torque that the pedicle screw 200 will experience when placed in the soft tissue 500.
The first preset torque range and the second preset torque range can be obtained through clinical tests, and understandably, the first preset torque range and the second preset torque range obtained through the clinical tests have universality, but lack pertinence, and the first preset torque range and the second preset torque range of different patients have specificity at times.
Preferably, the pedicle screw placing wrench 100 further includes a gyroscope 6, the gyroscope 6 is disposed on the wrench body 1, the gyroscope 6 is connected to the control device 5 to detect the rotation angle and the number of turns of the pedicle screw 200 in the human body, the control device 5 uses the average value of the torque detected by the torque sensor 2 when the pedicle screw 200 rotates in the cancellous bone 300 for the nth turn as a reference torque value, the first preset torque range is a range in which the torque value is greater than the reference torque value, the second preset torque range is a range in which the torque value is less than the reference torque value, and N is an integer greater than or equal to 1. By determining the first and second predetermined torque ranges for the characteristics of the patient's own cancellous bone 300, the accuracy of the procedure may be further improved. Preferably, N has a value of 2 or 3, so that the detected reference torque value is more accurate.
In an embodiment of the present invention, as shown in fig. 1, the wrench body 1 includes a handle 11 and a rod 12, and the handle 11 and the connecting portion 121 are respectively disposed at two ends of the rod 12. Further, as shown in fig. 1, the torque sensor 2 is provided between the handle 11 and the rod body 12. Of course, the present application is not limited thereto, and the torque sensor 2 is disposed at a position that ensures that the torque applied to the handle 11 by the surgeon can be transmitted to the pedicle screw 200 through the torque sensor 2. For example, the rod 12 may be made into a two-segment structure, and the torque sensor 2 is disposed between the two segments of the rod 12. The position where the torque sensor 2 is disposed is thereby more flexible and diversified.
In an embodiment of the present invention, the pedicle screw placing wrench 100 further includes a power supply 7, and the power supply 7 can be disposed on the wrench body 1 to supply power to the pedicle screw placing wrench 100. Of course, the power source 7 may be provided separately, i.e. the power source 7 is separate from the wrench body 1.
In an embodiment of the present invention, the pedicle screw setting wrench 100 further includes a switch 8, and the switch 8 is connected to the control device 5 to control the operation of the pedicle screw setting wrench 100.
In an embodiment of the present invention, the pedicle screw placing wrench 100 further includes a display terminal, and the display terminal is connected to the control device 5. Optionally, the display terminal may be a mobile phone, a tablet, a computer, a terminal display, etc., and the torque detected by the torque sensor 2, the calculated reference torque value of the cancellous bone 300, the screwing angle or number of the pedicle screws 200, the power supply 7, and the like may be transmitted to the display terminal for displaying by setting the display terminal, so that the surgeon can know the operation state more conveniently. Alternatively, the display terminal is connected to the control device 5 through a wireless connection module 9 (e.g. bluetooth, zigbee, etc.), and the wireless connection module 9 may be disposed in the wrench body 1.
A pedicle screw placing wrench 100 and a specific process for placing a screw according to a specific embodiment of the present invention will be described with reference to fig. 1 to 3.
As shown in fig. 1-3, the pedicle screw wrench 100 includes: a wrench body 1, the torque sensor 2, the gyroscope 6, a warning device, the power supply 7, the switch 8, and the control device 5. Torque sensor 2, gyroscope 6, warning device, power 7, switch 8 and controlling means 5 all locate on spanner body 1. The torque sensor 2, the gyroscope 6, the warning device, the power supply 7 and the switch 8 are all connected with the control device 5. The wrench body 1 comprises a handle 11 and a rod body 12, wherein the handle 11 is arranged at one end of the rod body 12, the other end of the rod body 12 is provided with a connecting part 121 used for connecting the pedicle screw 200, and the pedicle screw 200 is connected with the connecting part 121, so that the pedicle screw 200 is connected at the other end of the rod body 12. The control device 5 is arranged in the handle 11, and the torque sensor 2 is arranged between the handle 11 and the rod body 12. The warning device comprises the sounding device 3 (a horn or a buzzer) and the light-emitting device 4 (a lamp).
When the operation is performed, the pedicle screw 200 is firstly connected with the connecting part 121 of the pedicle screw wrench 100, and the pedicle screw 200 is preliminarily positioned at the position where the patient needs to be installed. Before screwing the nail, the switch 8 is pressed, and the control device 5 starts to collect signals of the torque sensor 2 and the gyroscope 6. In the process of screwing, the signal of the gyroscope 6 plays two roles, on one hand, the degree and the number of turns of the handle 11 are judged, and on the other hand, the control device 5 only acquires the kinetic moment of the handle 11 rotating. Within two initial tightening rounds, based on the value of the torque sensor 2, a tightening reference torque value of the cancellous bone 300 of the patient is calculated, and the magnitude of the reference torque value may be an average of the torques of the second initial tightening round. In the subsequent tightening process, the control device 5 collects the signal of the torque sensor 2 and compares the signal with the acquired reference torque value of the cancellous bone 300: if the collected torque value is suddenly increased, the screw 200 can be judged to possibly enter the cortical bone 400, the control device 5 controls the sounding device 3 (loudspeaker) to play low-frequency sound, and controls the light-emitting device 4 to flash the yellow light to perform low-risk alarm; if the control device 5 collects signals of the torque sensor 2 and then the signals become small after increasing, the screw 200 possibly penetrates through the cortical bone 400 to enter soft tissues 500 of a body, the sound generating device 3 (loudspeaker) is controlled to play high-frequency sound, and the light emitting device 4 is controlled to flash a red light to perform high-risk alarm. The alarm of sound and light can assist the doctor to judge the state of the hand area, and the success rate of the operation is improved.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include both the first and second features being in direct contact, and may also include the first and second features being in contact, not being in direct contact, but rather being in contact with each other through additional features therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning 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 illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 present invention. In this specification, the schematic representations of the terms used above do not necessarily 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.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (11)
1. A pedicle screw placing wrench is characterized by comprising:
the pedicle screw wrench comprises a wrench body, wherein one end of the wrench body is provided with a connecting part for connecting a pedicle screw;
the torque sensor is arranged on the wrench body and used for detecting the torque borne by the pedicle screw when being placed into a human body;
the warning device is used for sending a warning signal;
the torque sensor and the warning device are connected with the control device, and the control device controls the warning device to send out warning signals according to the torque detected by the torque sensor.
2. The pedicle screw wrench of claim 1, wherein the warning device comprises a sound emitting device.
3. The pedicle screw wrench of claim 1, wherein the warning device comprises a light emitting device.
4. The pedicle screw wrench of claim 1, wherein the warning device comprises a sound-emitting device and a light-emitting device, and the sound-emitting device and the light-emitting device are connected in series or in parallel.
5. The pedicle screw wrench of claim 1, further comprising a gyroscope disposed on the wrench body, the gyroscope being connected to the control device to detect the angle and number of turns of the pedicle screw in the human body.
6. The pedicle screw wrench of claim 1, wherein the warning device is capable of emitting a low-risk warning signal and a high-risk warning signal.
7. The pedicle screw wrench as claimed in claim 6, wherein the warning device issues a low-risk warning signal when the torque value detected by the torque sensor is within a first preset torque range;
when the torque value detected by the torque sensor is in a second preset torque range, the warning device sends out a high-risk warning signal,
wherein the first preset torque range is a torque value borne by the pedicle screw when the pedicle screw is placed in a cortical bone;
the second preset torque range is a torque value borne by the pedicle screw when the pedicle screw is placed in soft tissue.
8. The pedicle screw setting wrench according to claim 7, further comprising a gyroscope disposed on the wrench body, wherein the gyroscope is connected to the control device to detect the rotation angle and the number of turns of the pedicle screw in the human body, the control device uses an average value of the torques detected by the torque sensor when the pedicle screw rotates in the cancellous bone for an nth turn as a reference torque value, the first preset torque range is a range in which the torque value is greater than the reference torque value, the second preset torque range is a range in which the torque value is less than the reference torque value, and N is an integer greater than or equal to 1.
9. The pedicle screw wrench according to claim 1, wherein the wrench body includes a handle and a rod, and the handle and the connecting portion are respectively disposed at two ends of the rod.
10. A pedicle screw wrench as claimed in claim 9, wherein the torque sensor is provided between the handle and the rod.
11. The pedicle screw wrench of claim 1, further comprising a display terminal connected to the control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920971914.0U CN211187500U (en) | 2019-06-25 | 2019-06-25 | Pedicle screw placing wrench |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920971914.0U CN211187500U (en) | 2019-06-25 | 2019-06-25 | Pedicle screw placing wrench |
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| Publication Number | Publication Date |
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| CN211187500U true CN211187500U (en) | 2020-08-07 |
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| CN201920971914.0U Active CN211187500U (en) | 2019-06-25 | 2019-06-25 | Pedicle screw placing wrench |
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| CN (1) | CN211187500U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110200694A (en) * | 2019-06-25 | 2019-09-06 | 中国医学科学院北京协和医院 | Pedicle of vertebral arch sets nail spanner |
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2019
- 2019-06-25 CN CN201920971914.0U patent/CN211187500U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110200694A (en) * | 2019-06-25 | 2019-09-06 | 中国医学科学院北京协和医院 | Pedicle of vertebral arch sets nail spanner |
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