Accurate puncture needle placing system

Abstract

A precise puncture needle placement system belongs to the technical field of medical equipment and comprises a puncture needle, a top column, a sleeve, a fixing seat, a storage battery, an element box, a WiFi module, a speed regulator, a power mechanism, an acting force detection circuit, a depth detection circuit, a data receiving and displaying unit and a data analysis unit. Each set of power mechanism comprises a connecting seat, a pressure sensor, a linear resistor, a mounting frame, a screw rod, a bearing seat and a contact rod, an adjusting rod is mounted at the upper end of the screw rod of one set of power mechanism, and the lower end of a power output shaft of motor speed reducing equipment of the other set of power mechanism and the upper end of the screw rod are mounted together; the storage battery, the WiFi module, the acting force detection circuit, the depth detection circuit and the speed regulator are arranged in the element box and are electrically connected; the data receiving and displaying unit and the data analyzing unit are application software. According to the invention, convenience is brought to the surgeon, the safety risk brought to the patient by misoperation is reduced, and the doctor in charge not on site can know the operation condition of the surgeon in real time.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a precise puncture and needle placement system. Background Art

[0002] Pedicle screw internal fixation is a surgical method for treating spinal diseases, mainly used for treating spinal fractures, dislocations, spinal deformities and other diseases. This surgery is to implant nails or screws into the pedicle bone to stabilize the pedicle and achieve the treatment purpose. The main functions of pedicle screw internal fixation are as follows: (1) Stabilize the spine: Pedicle screw internal fixation can fix the vertebrae in a certain position, prevent spinal instability caused by fractures, dislocations, etc., thereby reducing the patient's pain and promoting the healing of spinal fractures or injuries; (2) Restore spinal function: Pedicle screw internal fixation can help the patient restore the normal function of the spine and reduce the limited mobility and dysfunction caused by spinal diseases; (3) Prevent spinal deformity: Pedicle screw internal fixation can prevent the further development of spinal deformity by fixing the vertebrae and reduce the impact on the patient; (4) Promote healing: Pedicle screw internal fixation can provide good internal fixation conditions, promote the healing of fractures or injuries, and reduce the pain and inconvenience to the patient.

[0003] In the prior art, the general operation process of pedicle screw internal fixation is as follows: The surgeon makes an incision at the skin of the patient's surgical site, then uses a puncture needle to puncture and place the needle at the spinal surgical site. After puncture, the puncture needle is removed and the catheter is retained. Tapping is performed at the surgical site through the catheter, and finally a pedicle screw is implanted into the surgical site through the catheter. In the above surgical process, puncture is a very important step. Currently, the puncture and needle placement device generally makes the puncture needle at the lower end inside the catheter enter the spinal surgical site by the surgeon knocking the top column. The above surgical process brings inconvenience to the surgeon and increases the surgical difficulty. When the doctor makes an operation error, it is possible that the depth of the puncture needle entering the surgical site is too deep, which will pose a safety hazard to the patient's health. Finally, when the attending doctor of the surgeon is not on site, it is impossible to understand the depth and acting force of the needle placement during the surgeon's operation, so it is not convenient to guide the surgical process. And when the attending doctor comes to the site to guide the surgery, it will bring certain inconvenience to him. Summary of the Invention

[0004] In order to overcome the drawbacks of the existing puncture and needle placement equipment for pedicle screw internal fixation, which are limited by the structure and have the disadvantages described in the background art, the present invention provides that, under the combined action of relevant structures, a surgeon can smoothly apply a force manually or electrically to make the puncture needle enter the corresponding depth position within the surgical site, which brings convenience to the surgeon, reduces the safety risk to the patient caused by operation errors, and can also transmit the force and depth signals during puncture and needle placement wirelessly. The attending doctor not on site can, through a smartphone or a PC application, understand the operation situation of the surgeon in real time and, if necessary, conduct telephone or video connection to give guidance, thus ensuring the surgical effect as much as possible with a precise puncture and needle placement system.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0006] A precise puncture and needle placement system, comprising a puncture needle, a top column, a sleeve, a fixed seat, a storage battery, an element box, a WiFi module, a speed regulator, and further having a power mechanism, a force detection circuit, a depth detection circuit, a data receiving and display unit, and a data analysis unit; the fixed seat has an opening, the upper end of the sleeve is installed at the lower end of the opening, the outer side of the fixed seat has an external thread, and the top column and the puncture needle are movably sleeved inside the sleeve; there are two sets of power mechanisms, and each set of power mechanisms includes a connecting seat, a pressure sensor, a linear resistor, a mounting frame, a lead screw, a bearing seat, and a contact rod. The connecting seat has an internal thread fixing groove, and there is a guiding hole at the upper end of the fixing groove. The lower end of the mounting frame is installed at the upper end of the connecting seat; there is a threaded hole in the upper part of the mounting frame, the lead screw is connected to the threaded hole by a thread, the lower end of the lead screw is installed together with the upper end of the bearing seat, the connecting rod at the upper end of the pressure sensor is installed inside the bearing inner ring of the bearing seat, and the upper end of the contact rod is installed at the lower end of the pressure sensor; a linkage rod is rotatably installed outside the upper end of the lead screw where the pressure sensor is located, the linear resistor is vertically installed on one side inside the mounting frame, and the side part of the linkage rod is installed together with the handle of the linear resistor. The upper end of the lead screw of one set of power mechanisms is installed with an adjusting rod, and the lower end of the power output shaft of the motor reduction device supporting the other set of power mechanisms is installed together with the upper end of the lead screw; the storage battery, the WiFi module, the force detection circuit, the depth detection circuit, and the speed regulator are installed in the element box and are electrically connected to the power input end of the motor reduction device; the data receiving and display unit and the data analysis unit are application software installed in an Internet device.

[0007] Further, the lower end of the top column contacts the upper end of the puncture needle.

[0008] Further, the contact rod and the top column are in a vertical plane from top to bottom.

[0009] Further, the force detection circuit includes a variable resistor, a resistor, and a voltmeter connected in series, and is connected to the pressure sensor. One end of the variable resistor is connected to one end of the resistor and the positive power input terminal of the voltmeter. The other end of the resistor is connected to the negative power input terminal of the voltmeter and the negative power input terminal of the pressure sensor. The other end of the variable resistor is connected to the signal output terminal of the pressure sensor.

[0010] Further, the depth detection circuit includes a resistor and a voltmeter connected electrically, and is connected to a linear resistor. One end of the linear resistor is connected to one end of the resistor and the positive power input terminal of the voltmeter. The other end of the resistor is connected to the negative power input terminal of the voltmeter.

[0011] Further, the data receiving and displaying unit can receive the up and down depth data of the puncture needle detected by the depth detection circuit and the pressure data acting on the puncture needle detected by the force detection circuit wirelessly transmitted by the WiFi module.

[0012] Further, the data analysis unit can receive the depth and pressure data output by the data receiving and displaying unit, and can give an alarm prompt when the depth and pressure data exceed the normal threshold.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention has two sets of power mechanisms. Before the specific operation, according to the needs, the surgeon combines the voltage signals representing depth and force displayed by the voltmeter, and can smoothly apply force manually or electrically to make the puncture needle enter the corresponding depth position in the surgical site, which brings convenience to the surgeon and reduces the safety risk to the patient caused by operation errors. The WiFi module can also transmit the force and depth signals during puncture placement wirelessly in real time. The attending doctor not on site can understand the operation situation of the surgeon in real time through the data receiving and displaying unit and the data analysis unit on the smart phone or PC, and can conduct telephone or video connection guidance when necessary, thus ensuring the surgical effect as much as possible. Based on the above, the present invention has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the drawings and embodiments.

[0015] Figure 1 is a schematic diagram of the overall structure based on the manually driven power mechanism of the present invention;

[0016] Figure 2 is a schematic diagram of the overall structure based on the electrically driven power mechanism of the present invention;

[0017] Figure 3 is the circuit diagram of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Figures 1 - 3As shown in the figure, a precise puncture needle placement system includes a puncture needle 1, a top column 2, a sleeve 3, a fixed seat 4, a storage battery G1, a charging socket CZ1, a component box 5, a WiFi module A3, a speed regulator A2, a power switch S1, and also has a power mechanism 6, a force detection circuit 7, a depth detection circuit 8, a data receiving and displaying unit, and a data analysis unit; there is an opening in the middle of the fixed seat 4, the upper end of the hollow sleeve 3 is welded outside the lower end of the opening of the fixed seat 4, the fixed seat 4 has an external thread, the top column 2 is movably sleeved inside the upper end of the sleeve 3, and the puncture needle 1 is movably sleeved inside the lower end of the sleeve 3; there are two sets of the power mechanism 6, and each set of the power mechanism includes a connecting seat 61, a pressure sensor A1, a linear resistor RP1, a mounting frame 62, a lead screw 63, a bearing seat 64, a bearing 65, and a contact rod 66. The middle of the connecting seat 61 has an internal thread fixing groove 611, and there is a guiding hole at the upper end of the fixing groove 611. The lower ends on both sides of the mounting frame 62 are respectively welded to the upper ends on both sides of the middle of the connecting seat 61; there is a threaded hole in the upper middle part of the mounting frame 62, the middle of the lead screw 63 is threadedly connected to the threaded hole of the mounting frame 62, the lower end of the lead screw 63 is fixedly installed outside the middle upper part of the bearing seat 64, and a connecting rod is fixedly installed inside the inner ring of the bearing of the bearing seat 64. The lower end of the connecting rod is fixedly installed in the middle of the upper end of the housing of the pressure sensor A1, and the lower end of the force receiving surface of the pressure sensor A1 is fixedly installed with the upper end of the contact rod 66; the inner ring of the bearing 65 is fixedly installed outside the lead screw 63 at the upper part of the pressure sensor A1, and a linkage rod 651 is horizontally welded to the right end of the outer ring of the bearing. The upper end of the linear resistor RP1 is vertically fixedly installed in the middle of the upper right side inside the mounting frame 62, and the right side of the linkage rod 651 is fixedly installed with the left side of the handle of the linear resistor RP1; among the two sets of the power mechanism, a regulating rod 67 is horizontally welded to the upper end of the lead screw 63 of one set of the power mechanism, and the other set of the power mechanism is equipped with a motor reduction device M. The lower end of the power output shaft of the motor reduction device M is fixedly installed with the upper end of the lead screw 63, and both sides of the motor housing of the motor reduction device M are respectively fixedly installed on the outer sides of the upper ends of the mounting frame 62; the storage battery G1, the charging socket CZ1, the WiFi module A3, the force detection circuit 7, the depth detection circuit 8, the speed regulator A2, and the power switch S1 are installed on the circuit board inside the component box 5; the fixing grooves of the connecting seats 61 in the two sets of the power mechanism are respectively threadedly connected to the outside of the fixed seat 4.

[0019] Figures 1 - 3As shown, the lower end of the top column 2 contacts the upper end of the puncture needle 1. The contact rod 66 and the top column 2 are in a vertical plane from top to bottom. The force detection circuit includes a variable resistor RP2, a resistor R2, and a voltmeter V1 connected by circuit board wiring, and is connected to the pressure sensor A1 by a wire. One end of the variable resistor RP1 is connected to one end of the resistor R2 and the positive power input terminal of the voltmeter V1. The other end of the resistor R2 is connected to the negative power input terminal of the voltmeter V and the negative power input terminal of the pressure sensor A1. The other end of the variable resistor RP1 is connected to the signal output terminal 3 of the pressure sensor A1. The depth detection circuit includes a resistor R1 and a voltmeter V connected by circuit board wiring, and is connected to the linear resistor RP1 by a wire. One end of the linear resistor RP1 is connected to one end of the resistor R1 and the positive power input terminal of the voltmeter V. The other end of the resistor R1 is connected to the negative power input terminal of the voltmeter V. The data receiving and displaying unit can receive the up or down depth data of the puncture needle detected by the depth detection circuit and the pressure data acting on the puncture needle detected by the force detection circuit wirelessly transmitted by the WiFi module. The data analysis unit can receive the depth and pressure data output by the data receiving and displaying unit and can give an alarm prompt when the depth and pressure data exceed the normal threshold. The display surfaces of the voltmeter V and the voltmeter V1 are located outside two openings at the front end of the component box. The two poles of the storage battery G1 and both ends of the charging socket CZ1 (for conveniently charging the storage battery), the power input terminals 1 and 2 of the WiFi module A3, the other end of the resistor R2 at the power input terminal of the force detection circuit, the other end of the resistor R1 at the power input terminal of the depth detection circuit, and the power input terminals 1 and 2 of the power switch S1 are respectively connected by wires. The two signal input terminals 3 and 4 of the WiFi module A3 and one end of the resistor R2 at the signal output terminal of the force detection circuit, one end of the resistor R1 at the signal output terminal of the depth detection circuit are respectively connected by wires. One of the power output terminals 5 and 6 of the power switch S1, the power output terminals 3 and 4 of the speed regulator A2 and the positive and negative, negative and positive power input terminals of the motor speed regulation device M are respectively connected by wires. The power input terminals 1 and 2 of the speed regulator A2 and the other power output terminals 3 and 4 of the power switch are connected by wires; the data receiving and displaying unit and the data analysis unit are application software installed in the smartphone or PC of the attending physician.

[0020] Figures 1 - 3As shown, the present invention has two sets of power mechanisms 6. Specifically, before the operation, according to the need, a force can be smoothly applied manually or electrically to make the puncture needle enter the corresponding depth position in the surgical site. After the fixing grooves of the connecting seat 61 in the manual power mechanism are respectively threadedly connected to the outside of the fixing seat 4, the puncture needle can be placed in the relevant part of the patient manually; after the fixing grooves of the connecting seat 61 in the power mechanism driven by the motor reduction device M are respectively threadedly connected to the outside of the fixing seat 4, the puncture needle can be placed in the relevant part of the patient electrically. In application, after necessary disinfection, the surgeon makes an incision at the skin of the surgical site of the patient, and then places the lower end of the cannula 3 into the incision. In the application of the manual power mechanism, the doctor (or another doctor) holds the connecting seat 61 with one hand (pressing down with appropriate pressure), and then rotates the lead screw 63 clockwise through the adjusting rod 67 with the other hand. The lead screw 63 drives the pressure sensor A1 and the contact rod 66 to move downward. Since the upper end of the connecting rod is installed in the inner ring of the bearing of the bearing seat 64 (the outer ring rotates and the inner ring does not rotate), the contact rod 66 vertically drives the ejector pin 2 to move downward, and the ejector pin 2 drives the puncture needle 1 to move downward and gradually enter the spinal surgical site (the pressure sensor does not rotate to prevent the wires connected to it from knotting); when the surgeon rotates the lead screw 63 counterclockwise, the lead screw 63 drives the pressure sensor A1 and the contact rod 66 to move upward, and the lower end of the contact rod 66 is separated from the upper end of the ejector pin 2. In this way, the doctor can use the present invention normally later (the puncture needle is for single use, and other components can be used again after disinfection). In the application of the electric power mechanism, the doctor holds the connecting seat 61 (pressing down with appropriate pressure), and toggles the handle of the power switch S1 to the left. The 1st and 2nd pins and the 3rd and 4th pins of the power switch S1 are respectively connected. In this way, the positive and negative power input terminals of the motor reduction device M are powered on, and its power output shaft drives the lead screw 63 to rotate clockwise. The lead screw 63 drives the pressure sensor A1 and the contact rod 66 to move downward. The lower end of the contact rod 66 vertically drives the ejector pin 2 to move downward, and the ejector pin 2 drives the puncture needle 1 to move downward and gradually enter the spinal surgical site; when the surgeon toggles the handle of the power switch S1 to the right, the 1st and 2nd pins and the 5th and 6th pins of the power switch S1 are respectively connected. In this way, the positive and negative power input terminals of the motor reduction device M are powered on, and its power output shaft drives the lead screw 63 to rotate counterclockwise. The lead screw 63 drives the pressure sensor A1 and the contact rod 66 to move upward, and the lower end of the contact rod 66 is separated from the upper end of the ejector pin 2. In this way, the doctor can use the present invention normally later.

[0021] Figures 1 - 3As shown, after the power supply output by the storage battery G1 enters the power input terminals of the force detection circuit, the depth detection circuit, and the WiFi module A2, the above circuits are powered on and operate. When the puncture needle 1 is implanted into the patient's body manually or electrically, and the contact rod 66 vertically drives the ejector pin 2 and the puncture needle 1 to descend, the reverse force when the puncture needle 1 enters the human body will act on the stress surface of the pressure sensor A1. The pin 3 of the pressure sensor A1 will output a dynamically changing voltage signal (the voltage signal is relatively large when the force applied by the doctor to the contact rod is relatively large, and vice versa, the voltage signal is relatively low). The voltage signal is divided by the adjustable resistor RP2 and the resistor R2 and enters the pin 4 of the WiFi module A2, and at the same time enters the positive power input terminal of the voltmeter V1. When the force applied by the doctor to the contact rod is relatively large, the voltmeter V1 shows a relatively large voltage signal, and vice versa, the displayed voltage signal is relatively low. When the puncture needle 1 is implanted into the patient's body manually or electrically, the outer ring of the bearing 65 (the outer ring does not rotate) will drive the handle of the adjustable resistor RP1 to descend. When the depth of the puncture needle 1 implanted into the human body is greater, the resistance value of the adjustable resistor RP1 is relatively small, and vice versa, the resistance value is relatively large. The voltage signal is divided by the adjustable resistor RP1 and the resistor R1 and enters the pin 3 of the WiFi module A2, and at the same time enters the positive power input terminal of the voltmeter V. When the depth of the puncture needle 1 implanted into the human body is greater, the voltmeter V shows a relatively large voltage signal, and vice versa, the displayed voltage signal is relatively low. Through the above, the surgeon can intuitively understand the depth of the puncture needle inserted into the human body and the force data during the insertion process by observing the voltage numbers of the voltmeters V and V1 in real time. The doctor can apply the force smoothly manually or electrically to make the puncture needle enter the corresponding depth position in the surgical site, which brings convenience to the surgeon and reduces the safety risk to the patient caused by operation errors (when the force applied during the electric insertion of the puncture needle is too large, the surgeon can adjust down the output power supply voltage of the speed regulation module A2. In this way, the rotation speed of the motor reduction device M decreases, the downward force of the puncture needle 1 becomes smaller and the speed becomes slower. When the force applied during the electric insertion of the puncture needle is too small, the surgeon can adjust up the output power supply voltage of the speed regulation module A2. In this way, the rotation speed of the motor reduction device M increases, the downward force of the puncture needle 1 becomes larger and the speed becomes faster). After the WiFi module A2 is powered on and operates, the WiFi module A2 can transmit the force and depth signals during the puncture needle insertion in real time wirelessly. The supervisor doctor not on site can understand the operation situation of the surgeon in real time through the data receiving and displaying unit and the data analysis unit of the smart phone or the PC, and can conduct telephone or video connection guidance when necessary, so as to ensure the surgical effect as much as possible. Figure 3Among them, the resistance values of the adjustable resistors RP1 and RP2 are 10K; the resistance values of the resistors R1 and R2 are 4.7K; the voltmeters V and V1 are four-digit liquid crystal voltage display meters with a range of 12V; the storage battery G1 is a lithium storage battery with a model of 12V / 10Ah; the WiFi module A2 model is ATK-ESP8266; the speed regulation module A2 is a finished adjustable DC-DC power supply module with an input of 12V DC and an output of 0-12V; the motor reduction device M is a finished motor gear reducer with a power of 20W.

[0022] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention.

[0023] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A precise puncture needle placement system, comprising a puncture needle, a top column, a sleeve, a fixing base, a storage battery, a component box, a WiFi module, and a speed regulator, characterized in that, It also has a power mechanism, a force detection circuit, a depth detection circuit, a data receiving and displaying unit, and a data analysis unit; the fixed seat has an opening, the upper end of the sleeve is installed at the lower end of the opening, the outside of the fixed seat has an external thread, and the top column and the puncture needle are movably sleeved in the sleeve; there are two sets of power mechanisms, and each set of power mechanisms includes a connecting seat, a pressure sensor, a linear resistor, a mounting bracket, a lead screw, a bearing seat, and a contact rod. The connecting seat has an internal thread fixing groove, and there is a guiding hole at the upper end of the fixing groove. The lower end of the mounting bracket is installed at the upper end of the connecting seat; there is a threaded hole in the upper part of the mounting bracket, the lead screw is connected to the threaded hole through a thread, the lower end of the lead screw is installed together with the upper end of the bearing seat, the connecting rod at the upper end of the pressure sensor is installed in the inner ring of the bearing of the bearing seat, and the upper end of the contact rod is installed at the lower end of the pressure sensor; a linkage rod is rotatably installed outside the upper end of the pressure sensor of the lead screw, and the linear resistor is vertically installed on one side inside the mounting bracket. The side part of the linkage rod is installed together with the handle of the linear resistor. The upper end of the lead screw of one set of power mechanisms is installed with an adjusting rod, and the lower end of the power output shaft of the motor reduction device matching the other set of power mechanisms is installed together with the upper end of the lead screw; the battery, the WiFi module, the force detection circuit, the depth detection circuit, and the speed regulator are installed in the component box and are electrically connected to the power input end of the motor reduction device; the data receiving and displaying unit and the data analysis unit are application software installed in the Internet device.

2. The precise puncture needle placement system according to claim 1, characterized in that, The lower end of the top column contacts the upper end of the puncture needle.

3. The precise puncture needle placement system according to claim 1, characterized in that, The contact rod and the top column are in a vertical plane from top to bottom.

4. The precise puncture needle placement system according to claim 1, wherein The force detection circuit includes a variable resistor, a resistor, and a voltmeter connected in series, and is connected to the pressure sensor. One end of the variable resistor is connected to one end of the resistor and the positive power input end of the voltmeter. The other end of the resistor is connected to the negative power input end of the voltmeter and the negative power input end of the pressure sensor. The other end of the variable resistor is connected to the signal output end of the pressure sensor.

5. The precise puncture needle placement system according to claim 1, characterized in that, The depth detection circuit includes a resistor and a voltmeter connected electrically, and is connected to the linear resistor. One end of the linear resistor is connected to one end of the resistor and the positive power input end of the voltmeter. The other end of the resistor is connected to the negative power input end of the voltmeter.

6. The precise puncture needle placement system according to claim 1, characterized in that The data receiving and displaying unit can receive the up and down depth data of the puncture needle detected by the depth detection circuit and the pressure data acting on the puncture needle detected by the force detection circuit wirelessly transmitted by the WiFi module.

7. The precise puncture needle placement system according to claim 1, wherein The data analysis unit can receive the depth and pressure data output by the data receiving and displaying unit, and can give an alarm prompt when the depth and pressure data exceed the normal threshold.

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