阅读说明：本技术 一种超声椎弓根开路器 (Ultrasonic pedicle of vertebral arch ware of opening a way ) 是由 温世锋 王宁 郑伟鹏 陈豪逸 黄远平 于 2021-09-02 设计创作，主要内容包括：本发明提供了一种超声椎弓根开路器,涉及超声骨刀领域。超声椎弓根开路器包括手柄和刀体,刀体连接在手柄上,刀体的前端设置有刀头,刀体上靠近刀头处设有压力感应结构,压力感应结构与刀体之间还安装有弹性挤压层,压力感应结构具有在弹性挤压层的作用下压紧周围组织的感应部；手柄中还设有电路板,电路板用于在压力感应结构反馈的压力检测信号大于压力设定值时控制超声骨刀暂停工作。当压力感应结构的感应部检测到的压力值小于设定压力值时,说明刀头接触到椎弓根的松质骨,超声骨刀启动工作；而大于设定压力值时,说明刀头接触到椎弓根的皮质骨,超声骨刀暂停工作,可更加安全地操作超声椎弓根开路器,保证螺钉通道的准确建立。(The invention provides an ultrasonic pedicle of vertebral arch channel opener, and relates to the field of ultrasonic osteotomes. The ultrasonic pedicle of vertebral arch open circuit device comprises a handle and a cutter body, wherein the cutter body is connected to the handle, a cutter head is arranged at the front end of the cutter body, a pressure sensing structure is arranged on the cutter body and close to the cutter head, an elastic extrusion layer is further arranged between the pressure sensing structure and the cutter body, and the pressure sensing structure is provided with a sensing part which is used for pressing surrounding tissues under the action of the elastic extrusion layer; the handle is also provided with a circuit board which is used for controlling the ultrasonic osteotome to pause when the pressure detection signal fed back by the pressure sensing structure is greater than the pressure set value. When the pressure value detected by the sensing part of the pressure sensing structure is smaller than the set pressure value, the cutter head is in contact with cancellous bone of the pedicle of vertebral arch, and the ultrasonic osteotome is started to work; when the pressure value is greater than the set pressure value, the cutter head contacts the cortical bone of the pedicle of vertebral arch, the ultrasonic osteotome stops working, the ultrasonic pedicle of vertebral arch opener can be operated more safely, and the accurate establishment of the screw channel is ensured.)

1. An ultrasonic pedicle of vertebral arch ware of opening a way, characterized by, including hand grip and cutter body, the said cutter body is connected to the said hand grip, the front end of the said cutter body has tool bits, there are pressure sensing structures on the said cutter body close to the said tool bit, still install the elastic extrusion layer between cutter body and the said pressure sensing structure, the said pressure sensing structure has the reaction part to compress the surrounding tissue under the influence of the said elastic extrusion layer;

the handle is also internally provided with a circuit board which is electrically connected with the pressure sensing structure, a pressure set value is preset in the circuit board, and the circuit board is used for controlling the ultrasonic osteotome to pause when a pressure detection signal fed back by the pressure sensing structure is greater than the pressure set value.

2. The ultrasonic pedicle opener according to claim 1, wherein the cutter body is provided with a positioning groove near the cutter head, the elastic extrusion layer and the pressure sensing structure are installed in the positioning groove, and the sensing part protrudes out of the outer surface of the cutter body.

3. The ultrasonic pedicle opener according to claim 2, wherein the pressure sensing structure comprises a plurality of circumferentially spaced pressure sensors, and a plurality of indicator lights corresponding to the pressure sensors are further mounted on the handle; the indicating lamps are respectively and electrically connected with the circuit board, so that the corresponding indicating lamps are started when a pressure detection signal fed back by the pressure sensor is greater than the pressure set value.

4. The ultrasonic pedicle opener according to claim 3, wherein the cutter body is coaxially arranged with a handle, a plurality of indicator lamps are arranged at the rear part of the handle, and the indicator lamps and the pressure sensor are in the same radial position along the projection of the cutter body in the axial direction.

5. The ultrasonic pedicle opener according to claim 4, wherein the pressure sensors are arranged in four in a central symmetry manner about the central axis of the cutter body, and the indicator lamps are also arranged in four in a central symmetry manner about the central axis of the handle.

6. The ultrasonic pedicle opener of claim 1, wherein the elastic extrusion layer is an elastic rubber gasket.

7. The ultrasonic pedicle opener according to claim 1, further comprising an ultrasonic host, wherein an ultrasonic generator and a transducer are arranged in the ultrasonic host, the ultrasonic generator is electrically connected with the transducer, and the transducer is connected with the cutter body.

Technical Field

The invention relates to the technical field of ultrasonic osteotomes, in particular to an ultrasonic pedicle opener.

Background

In spinal surgery pedicle screw fixation, pedicle screws are used to fix spinal bones, and before the pedicle screws are implanted, screw channels are usually established in spinal pedicles to ensure safe implantation of the screws.

The pedicle of vertebral arch open circuit ware is a special medical instrument used for establishing screw passageway, for example chinese invention patent application with application publication No. CN109124723A and application publication No. 2019.01.04 discloses a pedicle of vertebral arch open circuit and control method capable of early warning, and specifically discloses a pedicle of vertebral arch open circuit ware capable of early warning, which comprises: the disconnector body comprises a head part and a body part; the air bag is provided with at least one strain gauge, so that when the screw channel is established in the pedicle of vertebral arch opener, the air bag generates mechanical deformation under the action of surrounding human tissues, and the at least one strain gauge generates a strain effect; at least one acoustic reminding module and at least one optical display module are respectively connected with at least one strain gauge so as to send out acoustic reminding and optical alarm according to the current value in the circuit loop. The air bag generates mechanical deformation under the action of surrounding human tissues, so that the strain gauge generates a strain effect, and acoustic reminding and optical alarming are sent out according to the current value in the circuit loop.

However, the pedicle openers in the prior art mainly remind doctors of the entry position of the pedicle opener through acoustic and optical alarm to prevent the pedicle from being drilled through the bone wall. However, when a doctor manually operates the pedicle opening device, the doctor usually needs to match the eyes and concentrate on the driving position, and attention paid to sound and optical signals can cause distraction, so that accurate establishment of a screw channel cannot be guaranteed, and the operation effect and safety are poor.

Disclosure of Invention

In order to solve the above problems, the present invention aims to provide an ultrasonic pedicle opening device to solve the problems that the existing pedicle opening device cannot ensure the accurate establishment of a screw channel, and the operation effect and safety are poor.

The technical scheme of the ultrasonic pedicle of vertebral arch road opener is as follows:

the ultrasonic pedicle of vertebral arch open circuit device comprises a handle and a cutter body, wherein the cutter body is connected to the handle, a cutter head is arranged at the front end of the cutter body, a pressure sensing structure is arranged on the cutter body and close to the cutter head, an elastic extrusion layer is further arranged between the pressure sensing structure and the cutter body, and the pressure sensing structure is provided with a sensing part which is used for pressing surrounding tissues under the action of the elastic extrusion layer;

the handle is also internally provided with a circuit board which is electrically connected with the pressure sensing structure, a pressure set value is preset in the circuit board, and the circuit board is used for controlling the ultrasonic osteotome to pause when a pressure detection signal fed back by the pressure sensing structure is greater than the pressure set value.

Has the advantages that: when the tool bit works, the tool bit of the tool body can generate micro-amplitude vibration, and the structure of bone tissues is damaged due to high acoustic impedance of the tool bit, so that bones are locally crushed and a screw channel is formed; the sensing part of the pressure sensing structure is tightly pressed and attached to surrounding tissues through the elastic extrusion layer, and the cortical bone of the pedicle of vertebral arch has higher hardness compared with the cancellous bone, so that the cortical bone can form larger pressure on the sensing part of the pressure sensing structure, and the cancellous bone enables the sensing part of the pressure sensing structure to bear small pressure;

the circuit board is electrically connected with the pressure sensing structure, the pressure sensing structure feeds back a pressure detection signal to the circuit board, when the pressure value of surrounding tissues detected by the sensing part of the pressure sensing structure is greater than a set pressure value, the fact that the cutter head of the cutter body is in contact with the cortical bone is indicated, and at the moment, the circuit board controls the ultrasonic osteotome to pause to work, so that an operator is prompted to adaptively adjust the position, the direction and the depth of the cutter head; compared with the pedicle of vertebral arch channel-opening device in the prior art, the automatic control ultrasonic power system is provided, the ultrasonic pedicle of vertebral arch channel-opening device can be operated more safely, the accurate establishment of a screw channel is ensured, and the operation effect and the safety are better.

Furthermore, a positioning groove is formed in the cutter body and close to the cutter head, the elastic extrusion layer and the pressure sensing structure are installed in the positioning groove, and the sensing part protrudes out of the outer surface of the cutter body.

Furthermore, the pressure sensing structure comprises a plurality of pressure sensors which are circumferentially arranged at intervals, and a plurality of indicator lights corresponding to the pressure sensors are further installed on the handle; the indicating lamps are respectively and electrically connected with the circuit board, so that the corresponding indicating lamps are started when a pressure detection signal fed back by the pressure sensor is greater than the pressure set value.

Furthermore, the cutter body and the handle are coaxially arranged, the plurality of indicator lights are arranged at the rear part of the handle, and the projection of the indicator lights and the projection of the pressure sensor along the axial direction of the cutter body are located at the same radius position.

Furthermore, the pressure sensors are arranged in a central symmetry manner about the central axis of the cutter body, and the indicator lamps are also arranged in a central symmetry manner about the central axis of the handle.

Furthermore, the elastic extrusion layer is an elastic rubber gasket.

Furthermore, the ultrasonic pedicle of vertebral arch ware of opening a way still includes the ultrasonic wave host computer, be equipped with supersonic generator and transducer in the ultrasonic wave host computer, supersonic generator is connected with the transducer electricity, the transducer with the cutter body is connected.

Drawings

Fig. 1 is a perspective view of an ultrasonic pedicle opener in a specific embodiment 1 of the ultrasonic pedicle opener of the invention;

FIG. 2 is a schematic cross-sectional view of the cutter body of FIG. 1 at A-A;

fig. 3 is a schematic perspective view of the assembly of the pressure sensor on the cutter body in the embodiment 1 of the ultrasonic pedicle opener.

In the figure: 1. a handle; 2. a cutter body; 20. a cutter head; 3. a pressure sensor; 31. an elastic extrusion layer; 4. a circuit board; 5. and an indicator light.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

As shown in fig. 1 to 3, the ultrasonic pedicle opener of the present invention includes a handle 1 and a cutter body 2, the cutter body 2 is connected to the handle 1, a cutter head 20 is disposed at a front end of the cutter body 2, a pressure sensing structure is disposed on the cutter body 2 near the cutter head 20, an elastic extrusion layer 31 is further disposed between the pressure sensing structure and the cutter body 2, and the pressure sensing structure has a sensing portion for pressing surrounding tissues under the action of the elastic extrusion layer 31; the handle 1 is also provided with a circuit board 4, the circuit board 4 is electrically connected with the pressure sensing structure, a pressure set value is preset in the circuit board 4, and the circuit board 4 is used for controlling the ultrasonic osteotome to pause when a pressure detection signal fed back by the pressure sensing structure is greater than the pressure set value.

When the device works, the cutter head 20 of the cutter body 2 can generate micro-amplitude vibration, the spongy bone is structurally damaged under the action of the cutter head 20 due to high acoustic impedance of bone tissues, and therefore the spongy bone is locally crushed along the pedicle of vertebral arch and forms a screw channel; make the response portion of forced induction structure compress tightly the laminating with tissue around through elasticity extrusion layer 31, because pedicle of vertebral arch cortex bone is compared and is bigger in cancellous bone hardness, the cortex bone can form great pressure to the response portion of forced induction structure, and the cancellous bone makes the response portion of forced induction structure receive pressure little.

The circuit board 4 is electrically connected with the pressure sensing structure, the pressure sensing structure feeds back a pressure detection signal to the circuit board 4, when the sensing part of the pressure sensing structure detects that the pressure value of surrounding tissues is greater than a set pressure value, the fact that the cutter head 20 of the cutter body 2 contacts with the pedicle of vertebral arch cortex is indicated, and at the moment, the circuit board 4 controls the ultrasonic osteotome to pause working, so that an operator is prompted to adaptively adjust the position, direction and depth of the cutter head 20; compared with the pedicle of vertebral arch circuit-opening device in the prior art, the automatic control ultrasonic power system is provided, so that the ultrasonic pedicle of vertebral arch circuit-opening device can be operated more safely, the accurate establishment of a screw channel is ensured, and the operation effect and the safety are better.

Wherein, cutter body 2 is provided with positioning groove near tool bit 20 department, and elasticity extrusion layer 31 and forced induction structure are installed in positioning groove, and the response portion protrusion of forced induction structure is in the surface of cutter body 2. The elastic extrusion layer 31 and the pressure sensing structure are arranged in the positioning groove, the situation that the part of the elastic extrusion layer 31 and the pressure sensing structure protruding out of the outer surface of the cutter body 2 is too large to affect the normal operation of a screw channel is avoided, only the sensing part of the pressure sensing structure protrudes outwards, the sensing part is guaranteed to be in effective extrusion contact with surrounding tissues, and the effect of accurately identifying sclerotin is achieved.

In order to improve the operability in practical use, the pressure sensing structure comprises a plurality of pressure sensors 3 arranged at intervals in the circumferential direction, a plurality of indicator lamps 5 corresponding to the pressure sensors 3 are further mounted on the handle 1, and the plurality of indicator lamps 5 are respectively electrically connected with the circuit board 4 so as to be started when a pressure detection signal fed back by the pressure sensors 3 is greater than a pressure set value. The cutter body 2 and the handle 1 are coaxially arranged, the plurality of indicator lamps 5 are arranged at the rear part of the handle 1, and the projections of the indicator lamps 5 and the pressure sensor 3 along the axial direction of the cutter body 2 are respectively positioned on the same radius.

Namely, a plurality of indicator lamps 5 are arranged corresponding to a plurality of pressure sensors 3 on the cutter body 2 one by one, when the pressure value detected by one of the pressure sensors 3 on the cutter body 2 is large, the circuit board 4 immediately controls the indicator lamp 5 corresponding to the pressure sensor 3 to start, and the indicator lamp 5 is turned on to indicate that the cutter body 2 at the corresponding position is in contact with the vertebral pedicle cortical bone, so that a doctor is reminded to take corresponding adjustment operation.

Specifically, pressure sensor 3 is central symmetry about the axis of cutter body 2 and is provided with four, and pilot lamp 5 also is central symmetry about the axis of handle 1 and is provided with four, and four pressure sensor 3 are about the axis of cutter body 2 and distribute about, and four pilot lamps 5 also distribute about the axis of handle 1, if left pilot lamp 5 lights, then explain cutter body 2 left side part has contacted pedicle of vertebral arch cortex bone. In this embodiment, the elastic pressing layer 31 is an elastic rubber gasket, and the elastic rubber gasket can provide a powerful pressing force for the pressure sensor 3, so as to ensure that the pressure sensor 3 can accurately detect the hardness of the surrounding tissue.

The ultrasonic pedicle opener further comprises an ultrasonic host, wherein an ultrasonic generator and a transducer are arranged in the ultrasonic host, the ultrasonic generator is electrically connected with the transducer, and the transducer is connected with the cutter body 2. The ultrasonic generator is used for converting alternating current into an ultrasonic frequency electric signal and providing power for the whole ultrasonic pedicle opening device; the transducer is used for converting ultrasonic frequency electric signals into high-frequency vibration mechanical energy, is connected with the cutter body 2 and transmits vibration to the cutter head 20, and therefore the spongy bone is ultrasonically crushed.

In other specific embodiments of the ultrasonic pedicle of vertebral arch road-opener, in order to meet different use requirements, the pressure sensors are not limited to four in the specific embodiment 1, three pressure sensors can be uniformly arranged on the cutter body at intervals in the circumferential direction, correspondingly, three indicator lights are correspondingly arranged at the rear part of the handle, and the projection of the indicator lights and the projection of the pressure sensors along the axial direction of the cutter body are respectively positioned on the same radius, so that a doctor can be prompted to adopt corresponding adjustment operation when the cutter body contacts with the cortical bone of the pedicle of vertebral arch. Simultaneously, still can set up more than four at the circumference interval equipartition on the cutter body, corresponding, the rear portion of handle also corresponds is provided with more than four pilot lamps.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.