Medical skull base operation plasma knife with Doppler ultrasound internal carotid artery position early warning function

Abstract

The utility model relates to the technical field of medical surgical instruments, and provides a medical skull base surgical plasma knife with a Doppler ultrasonic internal carotid artery position early warning function, which comprises a plasma knife device and a Doppler ultrasonic early warning device, the plasma knife device comprises a knife head, a knife bar, a knife handle and a plasma knife controller; the knife handle is provided with a plasma interface and an ultrasonic interface; the Doppler ultrasonic early warning device comprises an ultrasonic probe, a transcranial Doppler diasonograph and an alarm, the ultrasonic probe is fixedly arranged on the surface of the cutter head, the ultrasonic probe is connected with the ultrasonic interface through a first wire, the first wire is attached to the surface of the cutter bar, the transcranial Doppler diasonograph is connected with the ultrasonic plug through a second wire, and the alarm is connected with the transcranial Doppler diasonograph. And the ultrasonic plug is inserted into the ultrasonic interface. The ultrasonic probe plasma knife has the advantages that the ultrasonic probe is combined with the plasma knife, internal carotid artery blood vessels are detected in real time in the process of cutting tissue around a tumor, and the resection efficiency of the skull base tumor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical surgical instruments, in particular to a medical skull base surgical plasma knife with the function of early warning the position of the internal carotid artery by Doppler ultrasound. Background Art

[0002] In current skull base tumor surgery, CT scans are used to check the location of the tumor. Then, the surgeon makes a hole in the patient's head and neck. With the help of a tiny light source and a tiny camera, the surgeon inserts the separation forceps into the hole and operates the separation forceps to separate and peel off the surrounding muscle and other tissues to find the tumor at the skull base. After finding the tumor at the skull base, the surgeon uses a plasma knife to remove the tumor.

[0003] The working principle of the plasma knife is that a thin plasma layer is formed between the electrode of the knife head and the tissue. The ions in the layer are accelerated by the electric field and transfer energy to the tissue, opening the molecular bonds between the cells of the tissue at low temperatures, so that the cells in the target tissue are decomposed into carbohydrates and oxides, causing liquefaction and ablation of the diseased tissue, thereby achieving the effect of reducing the volume of the target tissue.

[0004] Before removing the tumor, the surgeon uses the transcranial Doppler ultrasound diagnostic instrument's ultrasound probe to insert the ultrasound probe into the hole to detect the blood vessels of the internal carotid artery and confirm the positional relationship between the tumor and the internal carotid artery. This allows the surgeon to avoid the internal carotid artery when using the ion knife to remove the tumor, preventing damage to the internal carotid artery and causing heavy bleeding. The transcranial ultrasound Doppler diagnostic instrument is a non-invasive ultrasound detection technology that uses the weak part of the skull as an inspection window and applies the Doppler effect to study the hemodynamics of the cerebral artery.

[0005] Due to the small operating space of the channel, it is not advisable to insert too many surgical instruments at the same time. The surgical instruments will interfere with each other in the channel and affect the operation. The surgeon uses the plasma knife and the ultrasonic probe to insert the two instruments alternately into the channel. When using the ultrasonic probe to detect the tissue around the tumor, the surgeon checks the transcranial Doppler ultrasound diagnostic instrument to determine whether the internal carotid artery is touched. When the ultrasonic probe touches the internal carotid artery, the location of the internal carotid artery is determined. When using the plasma knife, the internal carotid artery is bypassed, and then the muscle and other tissues around the tumor are cut; when the ultrasonic probe does not touch the internal carotid artery, the surgeon operates the plasma knife to directly cut the muscle and other tissues around the tumor. Each time the plasma knife is operated, the tissue around the tumor must be finely cut, and then the ultrasonic probe is replaced; the tumor must be completely removed, and the internal carotid artery must be avoided during the removal process. However, the operation of inserting the two instruments, the plasma knife and the ultrasonic probe, into the channel alternately is very cumbersome, and the removal efficiency of skull base tumors is low.

[0006] Therefore, how to combine an ultrasonic probe with a plasma knife to detect the internal carotid artery in real time during the process of cutting the surrounding tissue of the tumor and improve the removal efficiency of skull base tumors is a technical problem that needs to be solved urgently in this field. Utility Model Content

[0007] The technical problem to be solved by the utility model is to provide a medical skull base surgery plasma knife with the function of Doppler ultrasound early warning of the position of the internal carotid artery, and to combine the ultrasonic probe with the plasma knife. During the process of cutting the tissue around the tumor, the internal carotid artery blood vessels can be detected in real time, thereby improving the removal efficiency of skull base tumors.

[0008] The utility model is realized as follows: a medical skull base surgery plasma knife with Doppler ultrasound early warning function of the internal carotid artery position, comprising:

[0009] Plasma knife device and Doppler ultrasound early warning device;

[0010] The plasma knife device comprises a knife head, a knife rod, a knife handle and a plasma knife controller, wherein the knife head is fixedly arranged at the left end of the knife rod, the knife handle is fixedly arranged at the right end of the knife rod, the knife handle has a plasma interface and an ultrasonic interface, the plasma knife controller is connected to a plasma plug through a wire, and the plasma plug is inserted into the plasma interface;

[0011] The Doppler ultrasound early warning device includes an ultrasound probe, a transcranial Doppler ultrasound diagnostic instrument and an alarm. The ultrasound probe is fixedly arranged on the surface of the knife head. The ultrasound probe is connected to the ultrasound interface through a first wire, and the first wire is attached to the surface of the knife rod. The transcranial Doppler ultrasound diagnostic instrument is connected to the ultrasound plug through a second wire, and the ultrasound plug is inserted into the ultrasound interface. The alarm is connected to the transcranial Doppler ultrasound diagnostic instrument through a third wire.

[0012] Furthermore, a groove is provided on the surface of the cutter head, the ultrasonic probe is built into the groove, a wire groove is provided on the surface of the cutter rod, and the first wire is built into the wire groove.

[0013] Further, the alarm is a speaker.

[0014] Furthermore, it also includes an MCU, and the MCU is electrically connected to the plasma knife controller and the transcranial Doppler ultrasound diagnostic instrument;

[0015] When the transcranial Doppler ultrasound diagnostic instrument is in a detection state, the plasma knife controller is locked in a standby state by the MCU;

[0016] When the transcranial Doppler ultrasound diagnostic instrument is in a waiting state, the MCU unlocks the plasma knife controller.

[0017] Compared with the background technology, the advantages of the utility model are: the ultrasonic probe is located at the blade head, during the skull base tumor surgery, the surgeon inserts the blade head of the utility model into the channel, the plasma knife controller is first in a standby state, when the ultrasonic probe of the blade head contacts the tissue around the skull base tumor, when the alarm sends a signal to remind the surgeon that the blade head has touched the internal carotid artery, the surgeon changes the position of the blade head to bypass the internal carotid artery, when the alarm does not send a signal, it means that the blade head has not touched the internal carotid artery, the plasma knife controller is started again, and the blade head cuts the tissue around the tumor; because the surgeon has determined the position of the internal carotid artery in advance, the blade head is prevented from damaging the internal carotid artery; there is no need to alternately use the plasma knife and the ultrasonic probe in the background technology to insert the two instruments into the channel; the utility model combines the ultrasonic probe with the plasma knife, and in the process of cutting the tissue around the tumor, the internal carotid artery is detected in real time, thereby improving the removal efficiency of the skull base tumor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0019] Figure 1 It is a structural schematic diagram of a plasma knife in the background technology.

[0020] Figure 2 It is a schematic diagram of the structure of an ultrasonic probe in the background technology.

[0021] Figure 3 The utility model is a schematic diagram of the structure of a medical skull base surgery plasma knife with the function of early warning the position of the internal carotid artery by Doppler ultrasound.

[0022] Figure 4 It is a schematic diagram of the positions of the grooves and wire grooves on the tool rod in the embodiment of the utility model.

[0023] Figure 5 The utility model is a diagram showing the use status of a medical skull base surgery plasma knife with a Doppler ultrasound early warning function for the position of the internal carotid artery.

[0024] Figure numerals: plasma knife device 1; knife head 11; groove 111; knife rod 12; wire groove 121; knife handle 13; plasma interface 131; ultrasound interface 132; plasma knife controller 14; plasma plug 141; Doppler ultrasound early warning device 2; ultrasound probe 21; transcranial Doppler ultrasound diagnostic instrument 22; ultrasound plug 221; alarm 23; first wire 24; second wire 25; third wire 26; MCU3; channel 4; internal carotid artery 41; skull base tumor 42. DETAILED DESCRIPTION

[0025] The utility model embodiment provides a medical skull base surgery plasma knife with Doppler ultrasound early warning function of the internal carotid artery position, which overcomes the disadvantage of the background technology that the surgeon uses a plasma knife and an ultrasonic probe to alternately insert the two instruments into the channel, which is cumbersome to operate; it realizes the technical effect of combining the ultrasonic probe with the plasma knife, and detecting the internal carotid artery in real time during the process of cutting the surrounding tissue of the tumor, thereby improving the removal efficiency of the skull base tumor.

[0026] The overall idea of ​​the technical solution of the embodiment of the utility model is as follows:

[0027] The ultrasonic probe is fixedly arranged on the knife head, and the ultrasonic probe is connected to the ultrasonic interface on the knife handle through a first wire, and the first wire is attached to the surface of the knife rod. Before using the utility model, the ultrasonic interface of the knife handle is connected to the transcranial Doppler ultrasound diagnostic instrument through a second wire and an ultrasonic plug, and the plasma interface of the knife handle is connected to the plasma knife controller through a wire and a plasma plug; when the utility model is not in use, the plug is pulled out from the interface to facilitate the transportation and disinfection of the instrument.

[0028] When it is necessary to remove a skull base tumor, the blade of the utility model is inserted into the hole, and the ultrasonic probe located at the blade comes into contact with the surrounding tissue of the skull base tumor. When the transcranial Doppler ultrasonic diagnostic instrument detects the internal carotid artery through the ultrasonic probe, the transcranial Doppler ultrasonic diagnostic instrument controls the alarm to send a signal to remind the operating staff that the blade has touched the internal carotid artery, and the operating staff changes the position of the blade to bypass the internal carotid artery. When the alarm does not send a signal, it means that the blade has not touched the internal carotid artery. When detecting the position of the internal carotid artery, the plasma knife controller is first in a standby state to prevent damage to the internal carotid artery during the detection process. After the detection, the plasma knife controller is started, and the blade releases plasma energy to cut the surrounding tissue of the skull base tumor.

[0029] During the process of cutting the surrounding tissue of the skull base tumor, the surgeon can switch to the ultrasonic probe at any time. The ultrasonic probe can detect in real time whether it touches the internal carotid artery, thus efficiently removing the skull base tumor. Since the surgeon has determined the location of the internal carotid artery in advance, the surgeon can avoid damaging the internal carotid artery with the blade.

[0030] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] See also Figures 1 to 5 , a preferred embodiment of the utility model.

[0032] A medical skull base surgery plasma knife with Doppler ultrasound early warning function for the position of the internal carotid artery, comprising:

[0033] Plasma knife device 1 and Doppler ultrasonic early warning device 2;

[0034] The plasma knife device 1 comprises a knife head 11, a knife rod 12, a knife handle 13 and a plasma knife controller 14, wherein the knife head 11 is fixedly arranged at the left end of the knife rod 12, the knife handle 13 is fixedly arranged at the right end of the knife rod 12, the knife handle 13 has a plasma interface 131 and an ultrasonic interface 132, the plasma knife controller 14 is connected to a plasma plug 141 through a wire, and the plasma plug 141 is inserted into the plasma interface 131;

[0035] The Doppler ultrasound early warning device 2 includes an ultrasound probe 21, a transcranial Doppler ultrasound diagnostic instrument 22 and an alarm 23. The ultrasound probe 21 is fixedly arranged on the surface of the cutter head 11. The ultrasound probe 21 is connected to the ultrasound interface 132 through a first wire 24. The first wire 24 is attached to the surface of the cutter rod 12. The transcranial Doppler ultrasound diagnostic instrument 22 is connected to an ultrasound plug 221 through a second wire 25. The ultrasound plug 221 is inserted into the ultrasound interface 132. The alarm 23 is connected to the transcranial Doppler ultrasound diagnostic instrument 22 through a third wire 26.

[0036] In the utility model, the ultrasonic probe 21 is located at the knife head 11. During the skull base tumor 42 operation, the surgeon inserts the knife head 11 of the utility model into the channel 4, and the plasma knife controller 14 is in a standby state. When the ultrasonic probe 21 of the knife head 11 contacts the tissue around the skull base tumor 42, the alarm 23 sends a signal to remind the surgeon that the knife head 11 touches the internal carotid artery 41. The surgeon changes the position of the knife head 11 to bypass the internal carotid artery 41. When the alarm 23 does not send a signal, it means that the knife head 11 has not touched the internal carotid artery 41. When the internal carotid artery 41 is encountered, the plasma knife controller 14 is started, and the knife head 11 cuts the tissue around the tumor. Since the surgeon has determined the position of the internal carotid artery 41 in advance, the knife head 11 is prevented from damaging the internal carotid artery 41. There is no need to alternately use the plasma knife and the ultrasonic probe 21 in the background technology to extend into the channel 4. The utility model combines the ultrasonic probe 21 with the plasma knife, and in the process of cutting the tissue around the tumor, the internal carotid artery 41 is detected in real time, thereby improving the removal efficiency of the skull base tumor 42.

[0037] The surface of the cutter head 11 is provided with a groove 111, the ultrasonic probe 21 is built into the groove 111, the surface of the cutter bar 12 is provided with a wire groove 121, and the first wire 24 is built into the wire groove 121. The beneficial effect of this technical solution is that the ultrasonic probe 21 does not emerge from the surface of the cutter bar 12, and the first wire 24 does not emerge from the surface of the cutter bar 12, which effectively prevents the ultrasonic probe 21 and the first wire 24 from being damaged. A heat insulating pad is provided between the ultrasonic probe 21 and the cutter head 11.

[0038] The alarm 23 is a speaker. The beneficial effect of this technical solution is that when the transcranial ultrasound Doppler diagnostic instrument detects the internal carotid artery 41 through the ultrasound probe 21, it sends a signal to the speaker, and the speaker reminds the operating personnel to confirm the position of the internal carotid artery 41, so that the operating personnel can focus more on changing the position of the blade 11 and bypassing the internal carotid artery 41, and even do not need to check the transcranial ultrasound Doppler diagnostic instrument.

[0039] It also includes an MCU3, which is electrically connected to the plasma knife controller 14 and the transcranial Doppler ultrasound diagnostic instrument 22;

[0040] When the transcranial Doppler ultrasound diagnostic instrument 22 is in the detection state, the plasma knife controller 14 is locked in the standby state by the MCU3;

[0041] When the transcranial Doppler ultrasound diagnostic instrument 22 is in a waiting state, the MCU3 unlocks the plasma knife controller 14. The beneficial effect of this technical solution is that it effectively prevents the blade head 11 from cutting the internal carotid artery 41 when the ultrasonic probe 21 is detecting. The ultrasonic probe 21 contacts the tissue surrounding the skull base tumor 42 to detect whether the internal carotid artery 41 exists. After receiving the signal from the transcranial Doppler ultrasound diagnostic instrument 22, the MCU3 locks the plasma knife controller 14 in a standby state. At this time, the plasma knife controller 14 cannot be started, and the blade head 11 cannot spray plasma energy. When the transcranial Doppler ultrasound diagnostic instrument 22 is in a waiting state, the ultrasonic probe 21 loses its detection function, and the MCU3 unlocks the plasma knife controller 14. At this time, the surgeon can start the plasma knife controller 14, and the blade head 11 can cut the tissue surrounding the skull base tumor 42.

[0042] Working mode of the utility model:

[0043] During the skull base tumor 42 surgery, after the tumor location is found, the new type of cutter head 11 is inserted into the pre-made channel 4, the transcranial Doppler ultrasound diagnostic instrument 22 is first in the detection state, the plasma knife controller 14 is in the standby state, the cutter head 11 carries the ultrasonic probe 21 and contacts the surrounding tissues of the skull base tumor 42 in the channel 4, and the transcranial Doppler ultrasound diagnostic instrument 22 detects whether it touches the internal carotid artery 41; when it touches the internal carotid artery 41, the alarm 23 sends out a warning signal to remind the operating personnel of the location of the internal carotid artery 41; then the operating personnel bypass the internal carotid artery 41, operate the transcranial Doppler ultrasound diagnosis to the waiting state, operate the plasma knife controller 14 to the starting state, and the cutter head 11 sprays plasma energy to cut the surrounding tissues of the skull base tumor 42. The tumor removal process is carried out step by step. The operating personnel can switch to use the ultrasonic probe 21 at any time to detect in real time whether it touches the internal carotid artery 41, both completely remove the tumor and avoid the internal carotid artery 41 during the removal process, and efficiently complete the removal of the skull base tumor 42.

[0044] Although the specific implementation methods of the present invention are described above, those skilled in the art should understand that the specific embodiments described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A plasma knife for skull base surgery with Doppler ultrasound early warning of the position of the internal carotid artery, characterized in that: include: Plasma knife device and Doppler ultrasound early warning device; The plasma knife device comprises a knife head, a knife rod, a knife handle and a plasma knife controller, wherein the knife head is fixedly arranged at the left end of the knife rod, the knife handle is fixedly arranged at the right end of the knife rod, the knife handle has a plasma interface and an ultrasonic interface, the plasma knife controller is connected to a plasma plug through a wire, and the plasma plug is inserted into the plasma interface; The Doppler ultrasound early warning device includes an ultrasound probe, a transcranial Doppler ultrasound diagnostic instrument and an alarm. The ultrasound probe is fixedly arranged on the surface of the knife head. The ultrasound probe is connected to the ultrasound interface through a first wire, and the first wire is attached to the surface of the knife rod. The transcranial Doppler ultrasound diagnostic instrument is connected to the ultrasound plug through a second wire, and the ultrasound plug is inserted into the ultrasound interface. The alarm is connected to the transcranial Doppler ultrasound diagnostic instrument through a third wire.

2. The medical skull base surgery plasma knife with Doppler ultrasound early warning function of the internal carotid artery position according to claim 1, characterized in that: A groove is formed on the surface of the cutter head, and the ultrasonic probe is built into the groove. A wire groove is formed on the surface of the cutter rod, and the first wire is built into the wire groove.

3. The medical skull base surgery plasma knife with Doppler ultrasound early warning function of the internal carotid artery position according to claim 1, characterized in that: The alarm is a loudspeaker.

4. The medical skull base surgery plasma knife with Doppler ultrasound early warning function of the internal carotid artery position according to claim 1, characterized in that: It also includes an MCU, which is electrically connected to the plasma knife controller and the transcranial Doppler ultrasound diagnostic instrument; When the transcranial Doppler ultrasound diagnostic instrument is in a detection state, the plasma knife controller is locked in a standby state by the MCU; When the transcranial Doppler ultrasound diagnostic instrument is in a waiting state, the MCU unlocks the plasma knife controller.

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