Ultrasonic surgical apparatus with temperature sensing tool bit

Abstract

The utility model provides ultrasonic surgical equipment with a temperature sensing tool bit, which comprises a host, a transducer and an ultrasonic instrument, a temperature sensor is arranged at the tool bit of the ultrasonic instrument and used for collecting temperature parameters of the position of the tool bit, and the host controls driving energy output to the end of the ultrasonic instrument based on the temperature parameters; wherein an inner core of the transducer is provided with an axially-penetrating circuit channel, a circuit channel axially extending to a tool bit from a tool bar is arranged in the tool bar of the ultrasonic instrument, and after the transducer is connected with the ultrasonic instrument, a wire in the transducer is correspondingly communicated with a wire in the tool bar. Therefore, temperature parameters collected by the temperature sensor can be transmitted back to the host. According to the scheme, the temperature at the position of the tool bit can be collected, energy for driving the tool bit is controlled according to the temperature, and thermal damage to biological tissue caused by high temperature is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field especially, relates to a kind of ultrasonic surgical equipment with temperature induction tool bit. BACKGROUND

[0002] Ultrasonic knife is common ultrasonic surgical equipment, ultrasonic electrotome is the novel ultrasonic surgical equipment integrated ultrasonic knife and high-frequency electrotome. Ultrasonic knife or ultrasonic electrotome when cutting biological tissue or carrying out blood coagulation operation to blood vessel, it can cause irreversible thermal injury to biological tissue due to temperature is too high. Control the temperature at tool bit, can reduce the occurrence of thermal injury. SUMMARY

[0003] The utility model discloses a kind of ultrasonic surgical equipment with temperature induction tool bit, to solve the problem that existing ultrasonic surgical instrument is prone to cause thermal injury.

[0004] Therefore, the utility model provides a kind of ultrasonic surgical equipment with temperature induction tool bit, including host computer, transducer and ultrasonic instrument, the ultrasonic instrument includes tool bar and handle, the tool bar front end is tool bit, rear end is fixedly connected with the handle, the head of the transducer can be connected with the handle, tail portion can be connected with the host computer by cable, the tool bit of the ultrasonic instrument is equipped with temperature sensor, for collecting the temperature parameter of tool bit position, the host computer is based on the temperature parameter control drive energy output to the ultrasonic instrument end;Wherein, the inner core of the transducer is equipped with the line channel that is axially penetrated, the wire that is divided from the transducer tail cable is connected with the first electric connection portion that is recessed in the head of the transducer through the line channel of the inner core;The tool bar inside the ultrasonic instrument is equipped with the line channel that is axially extended to the tool bit from the rear end of the tool bar, the wire of temperature sensor is connected with the second electric connection portion that is convex outside the tail portion of the tool bar along the line channel in the tool bar;After the transducer is connected with the ultrasonic instrument, the wire in the transducer is connected with the wire in the tool bar, so that the temperature parameter that the temperature sensor collects can be transmitted back to the host computer.

[0005] The utility model discloses the scheme, by setting temperature sensor at tool bit, by wire, the temperature data collected is transmitted back to host computer, designs electric connection portion at the connecting place of transducer and tool bar, and designs the line channel that is penetrated inside the inner core of tool bar and transducer, ensure that temperature acquisition line is smoothly connected, to realize the purpose of controlling tool bit temperature, greatly reduce the thermal injury that tool bit overheating causes to biological tissue. BRIEF DESCRIPTION OF DRAWINGS

[0006] Other features, objects and advantages of the utility model will become more apparent through the following non-restrictive implementation mode detailed description combined with drawings.

[0007] Figure 1 The connecting state schematic view of the ultrasonic surgical equipment with the temperature sensing tool head is provided for the embodiments of the present application;

[0008] Figure 2 The rear handle connecting portion of the transducer of the ultrasonic instrument is provided for the embodiments of the present application.

[0009] Figure 3 The schematic view of the jaw structure is provided for the embodiments of the present application.

[0010] Figure 4 The schematic view of the head structure of the transducer is provided for the embodiments of the present application.

[0011] Figure 5 The schematic view of the section structure of the inner core of the transducer is provided for the embodiments of the present application.

[0012] Figure 6 The schematic view of the tail structure of the tool bar is provided for the embodiments of the present application.

[0013] Figure 7 The schematic view of the section structure of the tail of the tool bar is provided for the embodiments of the present application.

[0014] Figure 8 The schematic view of the section structure when the tool bar is connected with the amplitude lever is provided for the embodiments of the present application.

[0015] Reference signs:

[0016] Host 100 Ultrasonic instrument 300

[0017] Transducer 200 Tool bar 310

[0018] Inner core of transducer 210 Tool head 311

[0019] Amplitude lever 211 Handle 320

[0020] Inner core circuit channel 220 Temperature sensor 330

[0021] First electric connection portion 230 Second electric connection portion 340

[0022] First electrode ring 231 Third electrode column 341

[0023] Second electrode ring 232 Fourth electrode ring 342

[0024] Limiting ring 343

[0025] Inner circuit channel of tool bar 350

[0026] Forceps 360 DETAILED DESCRIPTION

[0027] Hereinafter, exemplary embodiments of the present application will be described in detail with reference to the accompanying drawings so as to be easily carried out by one of ordinary skill in the art. Also, portions unrelated to the description of the exemplary embodiments are omitted in the drawings for the sake of clarity.

[0028] In the present specification, it is to be understood that terms such as "include" or "has" are intended to indicate that there are constituents, numbers, steps, actions, parts, or combinations thereof disclosed in the specification, and are not intended to exclude the possibility of additional one or more other constituents, numbers, steps, actions, parts, or combinations thereof.

[0029] It is further to be understood that the embodiments and features of the embodiments in the present specification can be combined with each other without conflict. Directions referred to in the present specification are with reference to the handle, "head" or "front end" represents a direction close to the blade head, and "tail" or "rear end" represents a direction away from the blade head. The following will be described in detail with reference to the accompanying drawings and in combination with the embodiments.

[0030] Figure 1 A connection state schematic diagram of the ultrasonic surgical apparatus with the temperature sensing blade head provided by the present application is shown.

[0031] As shown in Figure 1 , the ultrasonic surgical apparatus with the temperature sensing blade head includes a host 100, a transducer 200, and an ultrasonic instrument 300. The ultrasonic instrument 300 includes a blade rod 310 and a handle 320, the blade rod 310 has a blade head 311 at the front end and is fixedly connected with the handle 320 at the rear end. The head of the transducer 200 is connectable with the handle 320, and the tail is connectable with the host 100 through a cable. In use, the transducer 200 is connected with the ultrasonic instrument 300 through the handle 320, the cable of the transducer 200 is connected to the cable port of the host 100, and after being powered on, the host 100 can output ultrasonic energy and high-frequency electric energy to the outside to drive the ultrasonic instrument 300 to perform ultrasonic knife or ultrasonic electric knife operation. The temperature sensor 330 is arranged at the blade head 311 of the ultrasonic instrument 300, and is used to collect the temperature parameter at the blade head position. The host 100 controls the driving energy output to the ultrasonic instrument 300 based on the collected temperature parameter at the blade head 311, so as to avoid the temperature at the blade head being too high to cause thermal damage to the biological tissue.

[0032] Figure 2 A cross-sectional structure diagram of the handle connection part after the transducer is connected with the ultrasonic instrument provided by the present application is shown.

[0033] As shown in Figure 2As shown, the inner core 210 of the transducer 200 is provided with an axial line channel 220, and the wires separated from the cable at the tail of the transducer 200 are connected with the first electric connection part 230 in the recessed head of the transducer 200 through the line channel 220 of the inner core 210. The inner part of the blade rod 310 of the ultrasonic instrument 300 is provided with a line channel 350 extending axially from the rear end of the blade rod to the blade head, and the wires connected with the temperature sensor 330 are connected with the second electric connection part 340 in the protruded tail of the blade rod 310 through the line channel 350 in the blade rod 310. After the transducer 200 is connected with the ultrasonic instrument 300, the wires in the transducer 200 are connected with the wires in the blade rod 310 correspondingly, so that the temperature parameters collected by the temperature sensor 330 can be transmitted back to the host 100.

[0034] In the embodiment, the existing ultrasonic blade rod and the inner core of the transducer are improved, so that the dedicated line channel can be provided for the temperature measuring circuit, and the damage of the wires in the external wiring is avoided.

[0035] The temperature sensor 330 can collect temperature by using a thermocouple temperature sensor. When the temperature changes, the thermocouple generates a voltage difference, and the pressure difference signal is transmitted to the host through the wires, and the temperature is calculated by the host. The scheme of the thermocouple has the advantages of simple structure, wide measurement range, fast thermal response time, and high measurement precision. The temperature sensor 330 can also measure temperature by using a thermistor sensor, for example, an NTC temperature sensor. When the temperature changes, the resistance value changes with the change of the temperature. As the temperature rises, the resistance value decreases, so the change of the resistance value can be used to obtain the temperature change of the blade head. The thermistor sensor has the advantages of stable performance, flexible use, high reliability, etc.

[0036] The temperature sensor 330 can be arranged on the side surface of the blade head 311, as shown in the figure. Figure 3 As shown, the forceps 360 can hold the tissue when the forceps 360 are closed, and the temperature sensor 330 can also be arranged on the surface of the blade head 311 in contact with the clamped tissue. The temperature sensor 330 can be arranged in multiple positions to collect the temperature of the blade head at multiple positions, so as to improve the temperature measurement precision and improve the effect of temperature control. The multiple temperature sensors 330 can be arranged on the surface in contact with the clamped tissue and the side surface of the blade head respectively, so as to analyze the temperature of the clamped tissue through the multiple temperature measuring points, and thus the temperature control is more accurate.

[0037] Figure 4 Fig. 1 is a schematic structural view of the transducer head in the embodiment of the utility model, Figure 5 Fig. 2 is a sectional view of the inner core of the transducer.

[0038] As shown in Fig. 1, Figure 4As shown, the head of the transducer 200 is a tubular amplitude rod 211, which is a part of the inner core 210, and a first electrode ring 231 and a second electrode ring 232 are arranged concentrically in the tube of the amplitude rod 211, wherein the diameter of the second electrode ring 232 is smaller than that of the first electrode ring 231, and the front end surface of the second electrode ring 232 is lower than that of the first electrode ring 231, forming a first electrical connection part 230 with a stepped inner recess. Figure 5 As shown, the first electrode ring 231 and the second electrode ring 232 form a stepped structure in cross section. The inner core 210 is usually made of metal material, and therefore, an insulating material is arranged between the first electrode ring 231, the second electrode ring 232 and the inner core 210, and also between the first electrode ring 231 and the second electrode ring 232. When the host machine outputs high-frequency electric energy outwardly, the shell and the inner core of the transducer serve as two electrodes of the high-frequency current respectively, and by arranging the insulating material, current interference is prevented.

[0039] Figure 6 Fig. 4 is a schematic view of a tail structure of the tool bar in the embodiment of the utility model, Figure 7 Fig. 5 is a schematic view of a cross-sectional structure of the tail of the tool bar, Figure 8 Fig. 6 is a schematic view of a cross-sectional structure when the tool bar is connected to the amplitude rod.

[0040] As shown in Figs. 4 and 5, a third electrode column 341 and a fourth electrode ring 342 are arranged at the end of the tool bar close to the handle, the fourth electrode ring 342 surrounds the third electrode column 341, the rear end surface of the fourth electrode ring 342 is lower than that of the third electrode column 341, and a second electrical connection part 340 with a stepped outer protrusion is formed. Figure 6 Figure 7 As shown in Figs. 4 and 5, a third electrode column 341 and a fourth electrode ring 342 are arranged at the end of the tool bar close to the handle, the fourth electrode ring 342 surrounds the third electrode column 341, the rear end surface of the fourth electrode ring 342 is lower than that of the third electrode column 341, and a second electrical connection part 340 with a stepped outer protrusion is formed. Figure 8 The first electrical connection part 230 of the head of the transducer and the second electrical connection part 340 of the tail of the tool bar have matching concave-convex sizes, so that when the tool bar 310 is connected to the amplitude rod 211, the third electrode column 341 is in contact with the second electrode ring 232, and the fourth electrode ring 342 is in contact with the first electrode ring 231, as shown in Figs. 4 and 5. Such a connection structure enables the circuit of the temperature sensor to be connected to the line in the transducer, so that the temperature measurement signal can be smoothly transmitted back to the host machine.

[0041] In order to properly position the tool bar 310 and the amplitude rod 211, a limiting ring 343 can be further arranged outside the fourth electrode ring 342, the rear end surface of the limiting ring 343 is lower than that of the fourth electrode ring 342, and the second electrical connection part 340 forms a three-step outer protrusion structure. When the tool bar 310 is connected to the amplitude rod 211, the rear end surface of the limiting ring 343 abuts against the front end surface of the amplitude rod 211, so that the electrode abutting position is proper, as shown in Figs. 4 and 5. Figure 7 8

[0042] ​​​In order to improve the convenience, the temperature warning device can be arranged on the host 100, and when the temperature at the position of the cutter head 311 exceeds the set threshold, the temperature warning device sends an alarm to remind. The temperature warning device can remind through the display screen or sound and light alarm.

[0043] The above description is only the preferred embodiment of the present application and the explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combinations of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or equivalent features without departing from the inventive concept. For example, the technical solutions formed by the mutual replacement of the above features and the technical features disclosed in the present specification (but not limited to) having similar functions.

Claims

1. An ultrasonic surgical apparatus with temperature sensing blade head, comprising a main machine, a transducer and an ultrasonic instrument, the ultrasonic instrument comprising a blade rod and a handle, the blade rod having a blade head at the front end and being fixedly connected with the handle at the rear end, the head of the transducer being connectable with the handle and the tail being connectable with the main machine through a cable, characterized in that: a temperature sensor is arranged at the blade head of the ultrasonic instrument for collecting temperature parameters of the blade head position, and the main machine controls the driving energy output to the ultrasonic instrument end based on the temperature parameters; wherein: an internal core of the transducer is provided with an axial line channel, and a wire separated from the tail cable of the transducer is connected with a first electrical connection part recessed in the head of the transducer through the line channel of the internal core; the blade rod of the ultrasonic instrument is internally provided with a line channel extending axially from the rear end of the blade rod to the blade head, and the wire connected with the temperature sensor is connected with a second electrical connection part protruding outward at the tail of the blade rod along the line channel; after the transducer is connected with the ultrasonic instrument, the wire in the transducer and the wire in the blade rod are correspondingly connected to enable the temperature parameters collected by the temperature sensor to be transmitted back to the main machine. The temperature sensor is a thermocouple temperature sensor. The head of the transducer is a tubular amplitude rod, and a first electrode ring and a second electrode ring are arranged concentrically in the tube of the amplitude rod, wherein the diameter of the second electrode ring is smaller than that of the first electrode ring, and the front end surface of the second electrode ring is lower than that of the first electrode ring, forming a first electrical connection part recessed in a stepped manner. An end of the blade rod close to the handle is provided with a third electrode column and a fourth electrode ring, the fourth electrode ring surrounds the third electrode column, the rear end surface of the fourth electrode ring is lower than that of the third electrode column, forming a second electrical connection part protruding outward in a stepped manner, so that after the blade rod is connected with the amplitude rod, the third electrode column is in contact with the second electrode ring, and the fourth electrode ring is in contact with the first electrode ring. Insulating materials are arranged between the first electrode ring, the second electrode ring and the internal core, and between the first electrode ring and the second electrode ring.

2. The ultrasonic surgical apparatus of claim 1, wherein, Insulating materials are arranged between the third electrode column, the fourth electrode ring and the blade rod, and between the third electrode column and the fourth electrode ring.

3. The ultrasonic surgical apparatus of claim 1, wherein, The fourth electrode ring is provided with a limiting ring, the rear end surface of the limiting ring is lower than that of the fourth electrode ring, and when the blade rod is connected with the amplitude rod, the rear end surface of the limiting ring abuts against the front end surface of the amplitude rod.

4. The ultrasonic surgical apparatus of claim 3, wherein, The temperature sensor is arranged on the side surface of the blade head.

5. The ultrasonic surgical apparatus of claim 3, wherein, The temperature sensor has a plurality of temperature sensors arranged respectively on the surface in contact with the clamped tissue and the side surface of the blade head.

6. The ultrasonic surgical apparatus of claim 4, wherein, The main machine is further provided with a temperature warning device, which issues an alarm when the temperature of the blade head position exceeds a set threshold.

7. The ultrasonic surgical apparatus of claim 4, wherein, ​ 8. The ultrasonic surgical apparatus of claim 1, wherein, ​ 9. The ultrasonic surgical apparatus of claim 1, wherein, ​ 10. The ultrasonic surgical apparatus of claim 1, wherein, ​

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