A minimally invasive ultrasonic blade and a minimally invasive ultrasonic bone powered system

Abstract

A minimally invasive ultrasonic knife head and a minimally invasive ultrasonic bone power system, the minimally invasive ultrasonic knife head comprises a knife rod and a head end, the head end is located at the front end of the knife rod, the head end is curved to the side at a certain angle, and the knurled teeth or bevel teeth are arranged on the curved part. By bending the head end, the bone tissue around the intervertebral foramen mirror can be removed, so that the operator has more operation space under the limited foramen mirror channel, and the bone removal efficiency is improved. The knurled teeth or bevel teeth are arranged on the curved part, so that the bone tissue around the intervertebral foramen mirror can be better polished or cut.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a minimally invasive ultrasonic knife head and a minimally invasive ultrasonic bone power system. BACKGROUND

[0002] With the development of modern medical technology, minimally invasive surgery under the intervertebral foramen mirror has been widely used in clinical orthopedic surgery treatment. The existing power tool under the intervertebral foramen mirror is mainly a high-speed drill, which removes bone tissue by high-speed rotation of the drill head. Because of the rotating working mode, the drill is easy to roll and scrape soft tissue in operation, produce a pulling effect, and easily produce blood blindness, causing the medical staff's vision to be unclear, and thus causing medical accidents.

[0003] The ultrasonic bone power system is a power tool for surgery using ultrasonic energy, which has the outstanding characteristics of fine cutting / attraction, no damage to blood vessels and nerves and other soft tissues, and low-temperature hemostasis. The minimally invasive ultrasonic bone power system combines the characteristics of minimally invasive and ultrasonic, and realizes ultrasonic cutting operation of bone tissue through the tool channel of the intervertebral foramen mirror, greatly enriching the means of spinal surgery and improving the safety of spinal surgery. However, the tool hole of the intervertebral foramen mirror is relatively small, and the diameter of the working channel is usually 2-6mm, while the length of the entire channel is relatively long, usually more than 20cm. When the ultrasonic bone knife head system is inserted into the mirror, it cannot be bent horizontally due to the influence of ultrasonic principle, so the operation space is very limited and can only be operated along the direction of the mirror, and the bone tissue around the mirror head cannot be removed, so the maximum efficiency of the ultrasonic bone knife cannot be achieved. SUMMARY

[0004] The present application provides a minimally invasive ultrasonic knife head and a minimally invasive ultrasonic bone power system to solve the problem of limited operation space and inability to remove bone tissue around the mirror head in the prior art.

[0005] In a first aspect, the present application provides a minimally invasive ultrasonic knife head, comprising a knife rod and a head end, the head end being located at the front end of the knife rod, characterized in that: the head end is bent laterally at a certain angle.

[0006] Further, knurled teeth or inclined teeth are provided on the curved portion.

[0007] Further, the bottom surface of the curved portion is a square arc surface, and knurled teeth are provided on the upper and lower inclined surfaces of the transverse surface of the curved portion.

[0008] Further, the head end is rake-shaped, and inclined teeth are provided on the transverse surface of the curved portion.

[0009] Further, the head end is spoon-shaped, and knurled teeth are provided on the top surface of the curved portion.

[0010] Further, the head end is in the shape of a flat file, and the lateral surface of the curved portion is provided with inclined teeth.

[0011] Further, the head end is in the shape of a flat file, and the lateral surface of the curved portion is provided with inclined teeth.

[0012] Further, the head end is in the shape of a flat file, and the lateral surface of the curved portion is provided with inclined teeth.

[0013] Further, the head end is in the shape of a flat file, and the lateral surface of the curved portion is provided with inclined teeth.

[0014] Further, the knife rod of the minimally invasive ultrasonic knife head comprises two detachable parts, namely a front half part connected with the head end and a rear half part connected with the ultrasonic handle.

[0015] Further, the knife rod is a hollow structure.

[0016] Further, only part of the knife rod is a hollow structure, and water is discharged through the side hole in the middle part of the knife rod.

[0017] In the second aspect, the application further provides a minimally invasive ultrasonic bone power system comprising the minimally invasive ultrasonic knife head.

[0018] Further, the minimally invasive ultrasonic bone power system further comprises a transforaminal endoscope, and the knife rod of the minimally invasive ultrasonic knife head is assembled in the transforaminal endoscope channel.

[0019] The minimally invasive ultrasonic bone power system further comprises a main machine, an ultrasonic handle and a foot switch, the minimally invasive ultrasonic knife head is connected to the ultrasonic handle through a connecting device, and the ultrasonic handle and the foot switch are electrically connected with the main machine respectively.

[0020] Further, the main machine comprises a knife head detection module, a man-machine interaction module, an ultrasonic signal generator, a high-voltage driver, a frequency tracking and fault detection module, and a voltage, current and phase sampler.

[0021] The application uses an ultrasonic bone power system to replace a high-speed grinding drill, reduces medical risks, makes cutting more delicate, does not harm soft tissues such as blood vessels and nerves, and can better stop bleeding.

[0022] In the application, the head end of the minimally invasive ultrasonic knife head is curved to a certain angle in the lateral direction, the head end is curved to remove bone tissue around the hole mirror, so that the operator has more operation space under the limited hole mirror channel, and the bone removal efficiency is improved. Further, the knurled teeth or inclined teeth are arranged in the curved portion, so as to better polish or cut the bone tissue around the transforaminal endoscope.

[0023] The present application also solves the problem that the curved blade cannot pass through the hole mirror channel and the blade rod cannot be assembled to the hole mirror channel by setting the blade rod of the minimally invasive ultrasonic blade head as two detachable parts, further facilitating the assembly of the blade head. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 Structure diagram of the minimally invasive ultrasonic blade head of the first embodiment of the present application;

[0025] Figure 2 Structure diagram of the blade rod of the minimally invasive ultrasonic blade head of the first embodiment of the present application;

[0026] Figure 3 And 4 Structure diagram of the minimally invasive ultrasonic bone power system of the first embodiment of the present application;

[0027] Figure 5 Structure diagram of the main machine of the minimally invasive ultrasonic bone power system of the first embodiment of the present application; Figure 6 Structure diagram of the minimally invasive ultrasonic blade head of the second embodiment of the present application;

[0028] Figure 7 Structure diagram of the minimally invasive ultrasonic blade head of the third embodiment of the present application;

[0029] Figure 8 Structure diagram of the minimally invasive ultrasonic blade head of the fourth embodiment of the present application;

[0030] Figure 9 Structure diagram of the minimally invasive ultrasonic blade head of the fifth embodiment of the present application;

[0031] Figure 10 Structure diagram of the minimally invasive ultrasonic blade head of the sixth embodiment of the present application. DETAILED DESCRIPTION

[0032] In the following various embodiments, the detailed written description and the accompanying drawings together illustrate how the disclosed embodiments are implemented. It should be understood that other embodiments are also possible as long as they do not deviate from the scope of the present disclosure, and structural or logical changes can also be made to the embodiments.

[0033] The present application will be further described in detail below by specific embodiments and in conjunction with the accompanying drawings.

[0034] Embodiment I:

[0035] As Figure 1As shown, this embodiment discloses a minimally invasive ultrasonic scalpel head 1, which includes a shank 11 and a tip 12. The tip 12 is located at the front end of the shank 11 and is bent laterally at a certain angle. The bottom surface 121 of the bent portion is a square arc surface, and knurled teeth are provided on the upper and lower inclined surfaces of the transverse surface 122 of the bent portion.

[0036] During the assembly process, since the bent head end cannot pass through the channel of the foraminal endoscope, in order to enable the minimally invasive ultrasonic blade 1 to work together with the foraminal endoscope, Figure 2 As shown, the shank 11 of the minimally invasive ultrasonic blade is divided into two parts, namely the front half connected to the head end 12 and the back half connected to the ultrasonic handle. The two parts are connected by a thread, and the thread can tightly connect the front half and the back half of the blade to form a complete shank 11. During the installation process, the back half connected to the handle is inserted from the rear of the hole mirror, and the front half of the shank connected to the curved head end is inserted from the front of the hole mirror, and the two parts are tightened by threading. The above-mentioned connection position can be in the middle of the shank 11, the rear end of the shank 11, or the side of the shank close to the head end 12.

[0037] The knife rod 11 can be a hollow structure in its entirety, with water being directly poured out at the head end; or only a portion of the knife rod can be a hollow structure, with water being poured out through a side hole in the middle of the knife rod 11 .

[0038] The minimally invasive ultrasonic blade 1 can be used together with the intervertebral foraminal endoscope in a minimally invasive ultrasonic bone dynamic system. Figures 3-4 As shown, during use, the blade of the minimally invasive ultrasonic scalpel 1 is inserted into the working channel of the intervertebral foraminal endoscope 10 and connected to the ultrasonic handle via a connecting device. The ultrasonic handle is electrically connected to the main unit. A foot switch is also provided, which is also electrically connected to the main unit. The main unit, connecting device, ultrasonic handle, foot switch, minimally invasive ultrasonic scalpel head, and other components together constitute the ultrasonic bone dynamics system. Among the above components, the foot switch is used to control the start or stop of the host, and thus control the output and stop of the ultrasound; the host is used to detect the connection of the ultrasonic handle, control and adjust the ultrasonic drive signal, so that the ultrasonic system operates at the optimal resonant frequency, and can also identify and detect the vibration state of the handle, such as identifying the current, voltage and phase parameters of the ultrasonic drive signal, and detecting whether the drive signal is overcurrent, open circuit or short circuit; the ultrasonic handle is used to convert the high-voltage electrical signal into ultrasonic vibration to drive the ultrasonic blade to work; the minimally invasive ultrasonic blade 1 is used to transmit and amplify ultrasonic vibration to achieve surgical resection of bone tissue. At the same time, because the head end 12 of the minimally invasive ultrasonic blade 1 is bent laterally, it can remove bone tissue around the hole mirror, allowing the operator to have as much operating space as possible under the limited hole mirror channel, thereby improving bone removal efficiency. In addition, knurled teeth are provided on the upper and lower inclined surfaces of the transverse surface 122 of the curved portion, which is more conducive to grinding the bone tissue around the hole mirror, further improving efficiency.

[0039] likeFigure 5 As shown, the host of the minimally invasive ultrasonic bone power system comprises a tool head detection module, a human-machine interaction module, an ultrasonic signal generator, a high-voltage driver, a frequency tracking and fault detection module, and a voltage, current and phase sampler. The tool head detection module is used to identify whether an ultrasonic handle is connected to the host, so as to avoid outputting a high-voltage driving signal by the host in the absence of the ultrasonic handle. The human-machine interaction module identifies, through a circuit, the switching operation of a foot pedal, tool head detection, the control input of the user power and operation mode, the display of the abnormal state of the circuit, and the like, and controls the work of components such as the frequency tracking and fault detection module, and sends a control signal to the ultrasonic signal generator to make it start or stop generating a set ultrasonic frequency signal. The ultrasonic signal generated by the ultrasonic signal generator is output to the high-voltage driver, and the ultrasonic handle is driven to work through the high-voltage driver. The voltage, current and phase sampler samples the voltage and current in the driving circuit of the ultrasonic handle and the phase relationship thereof; the frequency tracking and fault detection module adjusts the frequency and phase of the ultrasonic signal generator according to the acquired voltage, current and phase, so that the ultrasonic handle works in an optimal working state, and can also be used for identifying abnormal working states such as short circuit and open circuit of the ultrasonic handle, and feeding back the result to the human-machine interaction module for user inquiry.

[0040] Embodiment Two

[0041] Figure 6 For the minimally invasive ultrasonic tool head 2 of the second embodiment of the application, the tool head 2 comprises a tool rod 21 and a head end 22, the head end 22 is located at the front end of the tool rod 21, and the head end 22 is curved to the side at a certain angle. The head end 22 is rake-shaped, and the rake teeth are arranged on the transverse surface 222 of the curved portion.

[0042] Similarly to the first embodiment, in order to facilitate assembly, the tool rod 21 is also divided into two parts, i.e. a front half connected with the head end 22 and a rear half connected with the handle, and the two parts are connected through threads. The tool rod 21 can be a hollow structure as a whole, and water is directly injected at the head end; or only part of the tool rod is a hollow structure, and water is injected through a side hole at the middle of the tool rod.

[0043] The minimally invasive ultrasonic tool head 2 can also be used with the intervertebral foramen mirror in the minimally invasive ultrasonic bone power system. In use, the tool rod of the minimally invasive ultrasonic tool 2 is installed in the working channel of the intervertebral foramen mirror, and is connected to the ultrasonic handle through a connecting device, the ultrasonic handle is electrically connected with the host, and a foot pedal switch is also provided and is electrically connected with the host. Since the head end 22 of the minimally invasive ultrasonic tool head 2 is curved to the side at a certain angle, the bone tissue around the foramen mirror can be removed, so that the operator has more operation space under the limited foramen mirror channel, and the bone removal efficiency is improved. In addition, the rake teeth are arranged on the transverse surface 222 of the curved portion, and the rake teeth can better cut the bone tissue around the foramen mirror, and further improve the efficiency.

[0044] Embodiment Three

[0045] Figure 7 For the minimally invasive ultrasonic knife head 3 of the third embodiment of the present application, the knife head 3 comprises a knife rod 31 and a head end 32, the head end 32 is located at the front end of the knife rod 31, and the head end 32 is bent to the side at a certain angle. The head end 32 is spoon-shaped, and the knurled teeth are arranged on the top surface 324 of the bent part. Further, the bevel teeth can be arranged on the transverse surface 322 and the side surface 323 of the bent part.

[0046] Similar to the first embodiment, in order to facilitate assembly, the knife rod 31 is also divided into two parts, namely the front half connected with the head end 32 and the rear half connected with the handle, and the two parts are connected through threads. The knife rod 31 can be a hollow structure throughout the rod, directly irrigating water at the head end; or only part of it is a hollow structure, irrigating water through a side hole in the middle of the knife rod.

[0047] The minimally invasive ultrasonic knife head 3 can also be used with the intervertebral foramen mirror in the ultrasonic bone tissue operation system. When in use, the knife rod 31 of the minimally invasive ultrasonic knife 3 is installed in the working channel of the intervertebral foramen mirror, and is connected to the ultrasonic handle through the connecting device, the ultrasonic handle is electrically connected with the main machine, and a foot switch is also provided, which is also electrically connected with the main machine. Because the head end 32 of the minimally invasive ultrasonic knife head 3 is bent to the side, and the bottom surface is trapezoidal, the bone tissue around the foramen mirror can be removed, so that the operator has more operating space under the limited foramen mirror channel, and the bone removal efficiency is improved. In addition, the knurled teeth are arranged on the top surface 324 of the bent part, and the knurled teeth can better polish the bone tissue around the foramen mirror. Further, the bevel teeth are arranged on the transverse surface 322 and the side surface 323 of the bent part, and the bevel teeth can better cut the bone tissue around the foramen mirror. Through the above arrangement, the bone removal efficiency can be improved to a greater extent, thereby providing more operating space.

[0048] Embodiment four

[0049] Figure 8 For the minimally invasive ultrasonic knife head 4 of the fourth embodiment of the present application, the knife head 4 comprises a knife rod 41 and a head end 42, the head end 42 is located at the front end of the knife rod 41, and the head end 42 is bent to the side at a certain angle. The head end 42 is sheet-shaped, and the bevel teeth are arranged on the transverse surface 422 and the bottom surface 421 of the bent part.

[0050] Similar to the first embodiment, in order to facilitate assembly, the knife rod 41 is also divided into two parts, namely the front half connected with the head end 42 and the rear half connected with the handle, and the two parts are connected through threads. The knife rod 41 can be a hollow structure throughout the rod, directly irrigating water at the head end; or only part of it is a hollow structure, irrigating water through a side hole in the middle of the knife rod.

[0051] The minimally invasive ultrasonic knife head 4 can also be used together with the intervertebral foramen mirror in the ultrasonic bone tissue operation system. In use, the knife rod 41 of the minimally invasive ultrasonic knife 4 is installed in the working channel of the intervertebral foramen mirror, and is connected to the ultrasonic handle through the connecting device, the ultrasonic handle is electrically connected with the main machine, and a foot switch is further provided and is also electrically connected with the main machine. Since the head end 42 of the minimally invasive ultrasonic knife head 4 is bent to the side, the bone tissue around the foramen mirror can be removed, so that the operator has more operation space under the limited foramen mirror channel, and the bone removal efficiency is improved. In addition, inclined teeth are arranged on the bottom surface 421 and the transverse surface 422 of the bent part, and the inclined teeth can better cut the bone tissue around the foramen mirror, further improving the bone removal efficiency.

[0052] Embodiment five

[0053] Figure 9 The minimally invasive ultrasonic knife head 5 of the fifth embodiment of the present application comprises a knife rod 51 and a head end 52, the head end 52 is located at the front end of the knife rod 51, and the head end 52 is bent to the side at a certain angle. The head end 52 is a bevelled square file, and a knurled tooth is arranged on the transverse surface 522 of the bent part.

[0054] Similarly to the first embodiment, in order to facilitate assembly, the knife rod 51 is also divided into two parts, i.e. a front half connected with the head end 52 and a rear half connected with the handle, and the two parts are connected through threads. The knife rod 51 can be a hollow structure as a whole, and water is directly injected at the head end; or only part of the structure is hollow, and water is injected through a side hole at the middle of the knife rod.

[0055] The minimally invasive ultrasonic knife head 5 can also be used together with the intervertebral foramen mirror in the ultrasonic bone tissue operation system. In use, the knife rod 51 of the minimally invasive ultrasonic knife 5 is installed in the working channel of the intervertebral foramen mirror, and is connected to the ultrasonic handle through the connecting device, the ultrasonic handle is electrically connected with the main machine, and a foot switch is further provided and is also electrically connected with the main machine. Since the head end 52 of the minimally invasive ultrasonic knife head 5 is bent to the side, the bone tissue around the foramen mirror can be removed, so that the operator has more operation space under the limited foramen mirror channel, and the bone removal efficiency is improved. In addition, the knurled tooth is arranged on the transverse surface 522 of the bent part, and the knurled tooth can better polish the bone tissue around the foramen mirror, further improving the bone removal efficiency.

[0056] Embodiment six

[0057] Figure 10 The minimally invasive ultrasonic knife head 6 of the sixth embodiment of the present application comprises a knife rod 61 and a head end 62, the head end 62 is located at the front end of the knife rod 61, and the head end 62 is bent to the side at a certain angle. The head end 62 is a prismatic column, a knurled tooth is arranged on the transverse surface 622 of the bent part, and a spiral inclined groove is arranged on the side surface 621.

[0058] Similar to the embodiment one, in order to facilitate assembly, the knife rod 61 is also divided into two parts, i.e. the front half connected with the head end 62 and the rear half connected with the handle, and the two parts are connected through screwing. The knife rod 61 can be a hollow structure as a whole, directly irrigating at the head end; or only part of it is a hollow structure, irrigating through a side hole at the middle part of the knife rod.

[0059] The minimally invasive ultrasonic knife head 6 can also be used with the intervertebral foramen mirror in the ultrasonic bone tissue operation system. In use, the knife rod 61 of the minimally invasive ultrasonic knife 6 is installed in the working channel of the intervertebral foramen mirror, and is connected to the ultrasonic handle through the connecting device, the ultrasonic handle is electrically connected with the main machine, and in addition, a foot switch is also provided, which is also electrically connected with the main machine. Since the head end 62 of the minimally invasive ultrasonic knife head 6 is curved to the side, the bone tissue around the foramen mirror can be removed, so that the operator has more operation space under the limited foramen mirror channel, and the bone removal efficiency is improved. In addition, the knurled teeth are arranged on the transverse surface 622 of the curved part, and the knurled teeth can better polish the bone tissue around the foramen mirror, further improving the bone removal efficiency.

[0060] Although various embodiments have been described in detail above, it should be apparent to those skilled in the art that various substitutions and / or equivalents thereof can be substituted for the specific embodiments described above without departing from the spirit of the present application. The present application is intended to cover any modifications and variations of the various embodiments discussed.

Claims

1. A minimally invasive ultrasonic scalpel head for use with a puncture mirror, comprising a scalpel shaft and a head end, wherein the head end is located at the front end of the scalpel shaft, and is characterized by: The head end is bent laterally at a certain angle; The knife rod comprises two detachable parts, namely a front half connected to the head end and a rear half connected to the ultrasonic handle, the rear half is used to penetrate from the rear of the borescope, and the front half is used to penetrate from the front of the borescope, and the front half and the rear half are connected by a thread; The curved portion is provided with knurled teeth or beveled teeth, and at least part of the knurled teeth or the beveled teeth is located on the transverse surface of the curved portion; Only a portion of the knife rod is a hollow structure, and water is discharged through a side hole in the middle of the knife rod.

2. The minimally invasive ultrasonic scalpel head used in conjunction with a hole mirror as claimed in claim 1, characterized in that: The bottom surface of the curved portion is a square arc surface, and knurled teeth are provided on the upper and lower inclined surfaces of the transverse surface of the curved portion.

3. The minimally invasive ultrasonic scalpel head used in conjunction with a hole mirror as claimed in claim 1, characterized in that: The head end is rake-shaped, and oblique teeth are provided on the transverse surface of the curved portion.

4. The minimally invasive ultrasonic scalpel head used in conjunction with a hole mirror according to claim 1, characterized in that: The head end is spoon-shaped, and knurled teeth are provided on the top surface of the curved portion.

5. The minimally invasive ultrasonic scalpel head used in conjunction with a hole mirror as claimed in claim 4, characterized in that: Bevel teeth are provided on the transverse surface and the side surfaces of the curved portion.

6. The minimally invasive ultrasonic scalpel head used in conjunction with a hole mirror as claimed in claim 1, characterized in that: The head end is in a sheet shape, and oblique teeth are provided on the transverse surface of the curved portion.

7. The minimally invasive ultrasonic scalpel head used in conjunction with a hole mirror as claimed in claim 1, characterized in that: The head end is in the shape of a beveled square file, and knurled teeth are provided on the transverse surface of the curved portion.

8. The minimally invasive ultrasonic scalpel head used in conjunction with a hole mirror as claimed in claim 1, characterized in that: The head end is a prismatic column, a transverse surface of the curved portion is provided with knurled teeth, and a side surface of the curved portion is provided with a spiral bevel groove.

9. A minimally invasive ultrasonic bone dynamics system, comprising the minimally invasive ultrasonic blade according to any one of claims 1 to 8 used in conjunction with a hole mirror.

10. The minimally invasive ultrasonic bone dynamics system according to claim 9, further comprising a transforaminal endoscope, wherein the blade shaft of the minimally invasive ultrasonic blade head is assembled in the channel of the transforaminal endoscope.

11. The minimally invasive ultrasonic bone power system according to claim 9 or 10, further comprising a host, an ultrasonic handle and a foot switch, wherein the minimally invasive ultrasonic blade is connected to the ultrasonic handle via a connecting device, and the ultrasonic handle and the foot switch are electrically connected to the host respectively.

12. The minimally invasive ultrasonic bone dynamics system according to claim 11, wherein: The host includes a tool head detection module, a human-computer interaction module, an ultrasonic signal generator, a high-voltage driver, a frequency tracking and fault detection module, and voltage, current, and phase samplers.

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