Medical stepping puncture mechanism with motor transmission and medical equipment

Abstract

The utility model provides a medical stepping puncture mechanism with motor transmission and medical equipment, the puncture mechanism is suitable for puncture equipment with image assistance, and the puncture mechanism comprises a fixing part used for fixing a puncture needle; the motor is used for obtaining power from the host; and the transmission device is used for converting power of the motor into non-instantaneous acting force for pushing the fixing component to move, so that the puncture needle is pushed into an area to be punctured. The puncture mechanism is used in cooperation with ultrasonic imaging and puncture integrated equipment, the purpose of conducting imaging and puncture at the same time can be achieved, the stepping type puncture operation and the puncture stopping operation are started through the control key, dependence on manual puncture can be reduced, the puncture difficulty is lowered, and operation degradation is facilitated.

Description

Technical Field

[0001] The present specification relates to the technical field of medical devices, and in particular to a medical step-by-step puncture mechanism with motor drive and a medical device for puncture. Background Art

[0002] In clinical interventional treatments such as puncture and ablation, a guide needle or catheter needs to be placed into the human body, which often requires image-assisted positioning. For example, when puncturing pleural effusion, the operator needs to perform the puncture with the assistance of ultrasound imaging.

[0003] In order to further reduce the reliance on doctor experience and manual puncture during the puncture operation, it is also necessary to design a puncture mechanism suitable for automatic puncture, so as to provide more effective auxiliary effect on the puncture operation. Utility Model Content

[0004] In order to solve the problems in the related art, the embodiments of the present disclosure provide a medical step-by-step puncture mechanism with motor drive, which is suitable for puncture equipment with ultrasound imaging assistance and can cooperate with a host to achieve automatic puncture.

[0005] The present disclosure provides a medical step-by-step puncture mechanism with motor drive, comprising:

[0006] A fixing component, used for fixing the puncture needle;

[0007] A motor, used to obtain power from the host;

[0008] The transmission device is used to convert the power of the motor into a non-instantaneous force that drives the fixed component to move, so that the puncture needle is pushed into the area to be punctured.

[0009] By using the puncture mechanism provided by the present invention in conjunction with a puncture device that integrates ultrasonic imaging, the purpose of simultaneous imaging and puncture can be achieved. By controlling the buttons to start the step-by-step puncture and stop the puncture, the reliance on manual puncture is reduced, the difficulty of puncture is reduced, and surgery downgrade is facilitated. With the assistance of ultrasonic imaging, the puncture positioning accuracy can also be improved, thereby improving surgical efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Other features, objects and advantages of the present disclosure will become more apparent from the following detailed description of non-limiting embodiments in conjunction with the accompanying drawings.

[0011] Figure 1 A structural block diagram of the medical puncture mechanism provided by the present invention;

[0012] Figure 2 It is a schematic diagram of an integrated ultrasound imaging and puncture device in an embodiment of the present disclosure;

[0013] Figure 3This is a diagram showing the use status of the puncture mechanism in the embodiment of the present disclosure in combination with the integrated device;

[0014] Figure 4 It is a structural schematic diagram of the power device part of the puncture mechanism in the embodiment of the present disclosure;

[0015] Figure 5 It is a schematic diagram of the cross-sectional structure of the puncture main body part of the puncture mechanism in the embodiment of the present disclosure. DETAILED DESCRIPTION

[0016] Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement them. In addition, for the sake of clarity, parts not related to the description of the exemplary embodiments are omitted in the accompanying drawings.

[0017] In this specification, it should be understood that terms such as "including" or "having" are intended to indicate the presence of features, numbers, steps, behaviors, components, parts or a combination thereof disclosed in this specification, and are not intended to exclude the possibility that one or more other features, numbers, steps, behaviors, components, parts or a combination thereof exist or are added.

[0018] It should also be noted that, in the absence of conflict, the embodiments and features in the embodiments in this specification can be combined with each other. The direction "front end" in this specification refers to the direction toward the patient, that is, the direction of puncture, and the "rear end" refers to the direction toward the operator, that is, the direction away from puncture; "puncture needle" refers to all kinds of interventional devices used in interventional treatment, including biopsy, injection, drainage puncture needles, etc.

[0019] In most cases, puncture needs to be performed with the assistance of ultrasound imaging. However, ultrasound imaging equipment has limited auxiliary effect on puncture and is highly dependent on the operator's experience. In addition, there is no organic combination between the ultrasound probe and the puncture mechanism, which causes many inconveniences during operation. To this end, the present disclosure provides a medical puncture mechanism that can be organically combined with the ultrasound probe under the control of the host to achieve more accurate automatic puncture. Figure 1 As shown, the medical puncture mechanism comprises:

[0020] A fixing component and a connecting assembly, wherein the fixing component is connected to the host through the connecting assembly; the fixing component is used to fix the puncture needle, and under the control of the host, a non-instantaneous force is applied to the puncture needle through the connecting assembly to push the puncture needle into the area to be punctured.

[0021] As an optional method, the puncture mechanism also includes a puncture body for accommodating a connecting assembly and a fixing component. The provision of a puncture body is conducive to providing protection and support for the connecting assembly and the fixing component. Further, a puncture channel is provided in the puncture body, and the fixing component is allowed to slide in the puncture channel, so that during puncture, the fixing component drives the puncture needle to move forward in the puncture channel. Further, a limiting hole is provided at the front end of the puncture body, which is used to limit the radial displacement of the puncture end of the puncture needle, and only allows the puncture end of the puncture needle to pass through. Further, an opening is provided on one side of the puncture body, and the puncture needle is fixed to the fixing component through the opening. The front side of the fixing component has a structure adapted to the pressing end of the puncture needle, and is detachably connected to the puncture body.

[0022] Furthermore, the puncture mechanism also includes a depth limiting component for limiting the puncture depth of the puncture needle. The depth limiting component can limit the movement of the puncture needle in the puncture direction through a mechanical structure arranged on the puncture mechanism, and the operator can manually adjust the depth limiting component so that the puncture needle stays at a desired position, or the main control unit can automatically adjust the depth limiting component.

[0023] As an optional method, the depth-limiting component includes a resistance detection unit for detecting the resistance encountered by the puncture needle during the puncture process and feeding back the detection result to the host. The host is used to control the puncture mechanism to stop applying force based on the detection result so that the puncture needle stays at a predetermined position. When the puncture needle enters the effusion area in the patient's body, the resistance is significantly reduced. At this time, it can be considered that the puncture target area has been reached and the puncture is stopped. The resistance detection unit can use a pressure sensor. This implementation method has the advantages of mature technology and simple implementation structure. Optionally, the resistance detection unit includes a pressure sensor, which is arranged on the surface in contact with the pressing end of the puncture needle.

[0024] As an optional method, the puncture mechanism also includes an angle adjustment mechanism for adjusting the angle between the puncture needle and the surface to be punctured. The angle adjustment mechanism can be connected to the fixing component, and the angle between the puncture needle and the surface to be punctured can be changed by adjusting the angle of the fixing component. The angle adjustment mechanism can also be connected to the puncture body, and the angle between the puncture needle and the surface to be punctured can be changed by adjusting the inclination angle of the puncture body.

[0025] Furthermore, the angle adjustment mechanism is connected to the host and adjusts the angle under the control of the host. This automatic angle adjustment method is convenient for one-handed operation and helps improve surgical efficiency.

[0026] As an optional method, the connection assembly includes a motor for obtaining power from the host; a transmission device for converting the power of the motor into a non-instantaneous force to push the fixed component to move, so that the puncture needle is pushed into the area to be punctured. The transmission device includes a gear set and a corresponding transmission shaft, the gear set is connected to the motor in a transmission connection, and the transmission shaft is connected to the fixed component to drive the fixed component to move by rotation. Furthermore, the gear set includes a reduction gear set, which is used to reduce the speed of the rotation output by the aforementioned motor and transmit it to the transmission shaft. This implementation method can reduce the speed of the motor output, help control the rotation of the transmission shaft, achieve smaller-scale position movement, and meet the needs of different puncture depths.

[0027] The technical solution disclosed in the present invention also provides a medical device for puncture, which can be organically combined with ultrasonic detection under the control of the host to achieve automatic puncture with higher accuracy. The medical device includes a host, an ultrasonic imaging device, and the puncture mechanism as described above.

[0028] The technical solution of the present disclosure will be described in detail below with reference to the accompanying drawings and in combination with specific embodiments.

[0029] First pass Figure 2 The medical device integrating ultrasonic imaging and puncture functions is schematically illustrated. The puncture mechanism provided in the embodiment of the present disclosure can be used in conjunction with such a device.

[0030] like Figure 2 A portable integrated ultrasound imaging and puncture device is shown, comprising a host 100, a display 200, an ultrasound probe 300 and a puncture mechanism 400. The display, ultrasound probe and puncture mechanism are all electrically connected to the host. The host controls the ultrasound probe to perform ultrasound scanning, and converts ultrasound echoes into electrical signals to generate a scanned surface image, which is then output by the display. The host can simulate the position of the puncture needle in the image by the position of the puncture structure, and generate a puncture guide line in the image, so as to facilitate the operator to locate the puncture point. The display 200 is foldably mounted on the top of the host 100 and unfolded when in use (refer to Figure 2 The puncture mechanism 400 is electrically connected to the host 100 and can perform the puncture operation under the control of the host 100. The host 100 is designed to be easy to hold, with an ultrasonic probe at the bottom, which can be operated by the user with one hand. A puncture button is provided on the surface of the host shell to start or stop the puncture operation.

[0031] Figure 3 A state diagram of the puncture mechanism of the embodiment of the present disclosure being used in conjunction with an integrated device is schematically provided.

[0032] like Figure 3As shown, the puncture mechanism 400 provided in the embodiment of the present disclosure includes a power device 410, a puncture body 420 and a puncture needle mounting seat 430. A needle insertion channel is provided in the puncture body 420, and the puncture needle mounting seat 430 is arranged inside the needle insertion channel. The front end of the puncture needle mounting seat 430 is used to fix the puncture needle, and the rear end is connected to the power device 410. The power device 410 drives the puncture needle mounting seat 430 to step forward under the drive of the host, and pushes the puncture needle to perform puncture.

[0033] like Figure 3 As shown, the puncture needle 440 is installed on the puncture needle mounting seat 430, and the puncture needle head extends forward along the needle insertion channel. When in use, the operator determines the puncture position by observing the scanned surface image displayed on the display and the guide line in the figure, and starts automatic puncture through the puncture button on the integrated device. At this time, the host outputs power to the power device, prompting the power device to push the puncture needle mounting seat forward step by step. The puncture process is a step-by-step puncture, and the puncture button can be used to stop the puncture at any time, that is, stop outputting power to the power device. The puncture mechanism can reduce the requirements for manual puncture by the operator.

[0034] Below through Figure 4 and Figure 5 The structure of the puncture mechanism will be described in detail.

[0035] Figure 4 It is a structural diagram of the power device 410 part of the puncture mechanism. Figure 5 It is a structural schematic diagram of the puncture main body part of the puncture mechanism.

[0036] like Figure 4 , 5 As shown, the power device 410 includes a motor 411, a transmission gear set and a screw 421. The motor 411 is electrically connected to the host and drives the screw 421 to rotate through the transmission gear set. One end of the screw 421 is connected and fixed to the puncture needle mounting seat 430. When the host outputs energy, the driving motor 411 drives the transmission gear set to rotate, and then transmits the rotation to the screw 421. An embodiment of the transmission gear set is as follows Figure 4 As shown, the transmission gear set includes a driving gear 413 and a driven gear 423, and the screw 421 is linked by the meshing of the driven gear 423 and the driving gear 413. In some embodiments, the transmission gear set also includes a reduction gear set 412, which is used to reduce the speed output by the motor 411 and transmit it to the driving gear 413. When the motor 411 rotates, the reduction gear set 412 is driven to rotate, and the reduction gear 412 is meshed with the driving gear 413 for transmission, thereby transmitting the reduced speed to the driving gear 413. The purpose of reducing the speed is to facilitate the control of the puncture progress so as to stop the puncture at an appropriate position. If the motor 411 adopts a low-speed motor, the reduction gear set 412 can also be omitted.

[0037] like Figure 5 As shown, a needle insertion channel 422 is provided inside the puncture body 420, and a screw rod 421 is arranged parallel to the needle insertion channel 422, and the screw rod 421 rotates under the drive of the transmission gear set. In one embodiment, the screw rod 421 is linked by the meshing of the driven gear 423 and the driving gear 413, and the screw rod 421 is driven to rotate under the action of the driving gear 413 and the driven gear 423, so that the screw rod 421 is pushed forward or reset backward along the direction of the needle insertion channel.

[0038] based on Figure 4 and Figure 5 The puncture mechanism shown specifically includes a power device, a puncture body and a puncture needle mounting seat, wherein the power device includes a motor, a reduction gear set, a driving gear, a driven gear and a screw, the motor is electrically connected to the main body, and when the motor rotates, it drives the reduction gear set to rotate, and the reduction gear drives the driving gear to rotate, and the screw is linked by the engagement of the driven gear and the driving gear; a needle insertion channel is provided inside the puncture body, and the screw is arranged parallel to the needle insertion channel; the puncture needle mounting seat is arranged inside the needle insertion channel, and the front end of the puncture needle mounting seat is used to fix the puncture needle, and the rear end is connected and fixed to the screw, and when the motor rotates, it drives the screw to rotate, thereby driving the puncture needle mounting seat to move in the needle insertion channel, and pushing the puncture needle for puncture.

[0039] According to the embodiment of the present disclosure, a pressure sensor may also be provided in the puncture mechanism to detect the resistance encountered by the puncture needle during puncture, and the pressure sensor is provided on the surface where the puncture needle mounting seat contacts the pressing end of the puncture needle. The pressure sensor is electrically connected to the host so as to feed back the detected resistance data to the host, so that the host stops outputting power to the power device when it determines that the puncture resistance meets the predetermined conditions. When the puncture needle 440 is mounted on the puncture needle mounting seat 430, the pressing end of the puncture needle contacts the pressure sensor, and the resistance encountered by one end of the puncture needle during puncture can be fed back to the pressing end of the puncture needle, and transmitted to the pressure sensor, and then fed back to the host, and the host analyzes the resistance change to determine the puncture progress. For example, during thoracic puncture, when the puncture reaches the position of pleural effusion, the resistance encountered by the puncture needle is instantly reduced, meeting the preset conditions, and the host can control the puncture mechanism 400 to stop puncturing. The puncture in this embodiment is a fully automatic puncture process. After the puncture button is started, it can stop automatically after the puncture is in place without human intervention, which further improves the convenience of operation and reduces the dependence on the operator's puncture experience.

[0040] When working, the host outputs energy to drive the motor 411 to rotate. Under the drive of the motor 411, the screw 421 rotates, driving the puncture needle mounting seat 430 to move forward in the needle insertion channel, pushing the puncture needle for puncture. The operator can manually press a button to stop the puncture. If a pressure sensor is used to detect the puncture resistance, during the puncture process, the puncture is stopped when it is detected that the puncture resistance meets the predetermined conditions. Specifically, the host obtains the resistance data fed back by the pressure sensor in real time, and stops outputting driving energy to the motor 411 when it is judged that the predetermined conditions are met. The predetermined conditions can be set according to the treatment purpose or the characteristics of the puncture site. For example, in the puncture and drainage treatment of pleural effusion, the predetermined condition is that the resistance is significantly reduced, and the reduction is greater than 30%.

[0041] The puncture body 420 is in the shape of a long strip, and a long opening is provided on the side of the puncture body 420 so that the puncture needle can be installed on the puncture needle mounting seat 430. The opening is an integrated structure with the needle insertion channel, has a certain elastic force, and can be opened when subjected to force. When installing the puncture needle, the puncture needle is placed along the direction of the opening, and the puncture needle is pressed in parallel so that the puncture needle passes through the opening and enters the internal needle insertion channel. The space in the upper part of the needle insertion channel allows the puncture needle mounting seat to move up and down, and the lower part is the needle limit area, which only allows the needle body of the puncture needle to move up and down, thereby limiting the position of the puncture needle from being offset.

[0042] The puncture body 420 can be an easily replaceable structure and can be detachably connected to the power device 410 to facilitate disinfection and cleaning.

[0043] The puncture needle mounting seat 430 can also be an easily replaceable structure, which is detachably connected to the screw rod 421 and has a corresponding fixed base according to the pressing end tail of the puncture needle of different sizes and types. The puncture needle mounting seat 430 is provided with a corresponding snap-in opening, and when the puncture needle is installed, the puncture needle is pressed into the mounting seat through the snap-in opening and clamped and fixed.

[0044] The above description is only a preferred embodiment of the present disclosure and an explanation of the technical principles used. For example, the ultrasonic puncture device used with the puncture mechanism may also have other mechanisms and appearances, and the puncture mechanism may also be connected to an independent ultrasonic imaging device through a host to form a system, which is not limited in this specification.

[0045] Those skilled in the art should understand that the scope of the invention involved in the present disclosure is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present disclosure.

Claims

1. A medical step-by-step puncture mechanism with motor drive, suitable for image-assisted puncture equipment, characterized in that: include: A fixing component, used for fixing the puncture needle; A motor, used to obtain power from the host; The transmission device is used to convert the power of the motor into a non-instantaneous force that drives the fixed component to move, so that the puncture needle is pushed into the area to be punctured. The transmission device includes a gear set and a matching transmission shaft. The gear set is connected to the motor in a transmission manner, and the transmission shaft is connected to the fixed component to drive the fixed component to move by rotation. The gear set includes a reduction gear set, and the reduction gear set is used to reduce the speed of the rotation output by the motor and transmit it to the transmission shaft.

2. The puncture mechanism according to claim 1, characterized in that: Also includes: The puncture body is used to accommodate the motor, the transmission device and the fixing component.

3. The puncture mechanism according to claim 2, characterized in that: The puncture body is provided with a puncture channel, and the fixing component is arranged in the puncture channel and can slide in the puncture channel.

4. The puncture mechanism according to claim 2, characterized in that: A limiting hole is provided at the front end of the puncture body, which is used to limit the radial displacement of the puncture end of the puncture needle and only allow the puncture end of the puncture needle to pass through.

5. The puncture mechanism according to claim 2, characterized in that: Also includes: An angle adjustment mechanism, the puncture body is connected to the host through the angle adjustment mechanism, and the inclination angle of the puncture body is adjusted under the control of the host to change the angle between the puncture needle and the surface to be punctured.

6. The puncture mechanism according to claim 2, characterized in that: An opening is provided on one side of the puncture body, and the puncture needle is fixed to the fixing component through the opening.

7. The puncture mechanism according to claim 2, characterized in that: The front side of the fixing component has a structure adapted to the pressing end of the puncture needle and is detachably connected to the puncture body.

8. A medical device for puncture, characterized in that: include: A host, an ultrasonic imaging device, and a puncture mechanism as described in any one of claims 1 to 7.

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