Ejection puncture mechanism and medical equipment for puncture

Abstract

The embodiment of the utility model provides an ejection puncture mechanism and medical equipment used for puncture, the ejection puncture mechanism is suitable for the medical puncture equipment with image assistance, and the ejection puncture mechanism comprises a fixing component, the front portion of the fixing component is used for fixing the pressing end of a puncture needle; the ejection device is connected with the main machine, and the ejection device is used for applying ejection thrust to the fixing part under the control of the main machine so that the puncture needle can be pushed into an area to be punctured. The puncture mechanism is used in cooperation with puncture equipment, rapid puncture is started through control of the host, dependence on manual puncture is reduced, puncture deviation is reduced, and the puncture precision and the operation efficiency can be improved with the assistance of ultrasonic imaging.

Description

Technical Field

[0001] The present specification relates to the technical field of medical devices, and in particular to an ejection puncture mechanism 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 technology, the present disclosure provides a catapult puncture mechanism, which can be used in conjunction with an ultrasonic imaging puncture device, or can be used in conjunction with a puncture device and an ultrasonic imaging device. It can achieve rapid puncture through host control, reduce dependence on manual puncture by the operator, and improve the puncture effect.

[0005] The present disclosure provides an ejection puncture mechanism, which is applicable to medical puncture equipment with image assistance, including:

[0006] A fixing component, the front side of which is used to fix the pressing end of the puncture needle;

[0007] The ejection device is connected to the host, and is used to apply an ejection thrust to the fixed component under the control of the host, so that the puncture needle is pushed into the area to be punctured.

[0008] The puncture mechanism provided by the present invention cooperates with the main machine through a connecting component, applies force to the puncture needle through a fixed component, and realizes rapid puncture under the control of the main machine, thereby reducing dependence on manual puncture and reducing puncture deviation. With the assistance of ultrasonic imaging, the puncture accuracy can also be improved, thereby improving surgical efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] 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.

[0010] Figure 1 A structural block diagram of the medical puncture mechanism provided by the present invention;

[0011] Figure 2 is a schematic diagram of an integrated ultrasound imaging and puncture device in an embodiment of the present disclosure;

[0012] 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;

[0013] Figure 4 It is a structural schematic diagram of the puncture body of the puncture mechanism in the embodiment of the present disclosure;

[0014] Figure 5 It is a structural schematic diagram of a puncture needle mounting seat of a puncture mechanism in an embodiment of the present disclosure;

[0015] Figure 6 It is a schematic diagram of a puncture mechanism with a limiting device in an embodiment of the present disclosure;

[0016] Figure 7 It is a schematic diagram of the cross-sectional structure of the puncture mechanism with a limiting device in the embodiment of the present disclosure. DETAILED DESCRIPTION

[0017] 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.

[0018] 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.

[0019] 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.

[0020] In most cases, puncture needs to be performed with the assistance of ultrasound images. However, the existing ultrasound imaging equipment has limited auxiliary effect on puncture, is highly dependent on the operator's experience, and 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. The medical puncture mechanism is suitable for puncture devices with image assistance, such as Figure 1 As shown, including:

[0021] A fixing component, the front portion of which is used to fix the pressing end of the puncture needle;

[0022] The ejection device is connected to the host and is used to apply an ejection thrust to the fixed component under the control of the host so as to push the puncture needle into the area to be punctured.

[0023] As an optional method, the connection assembly includes a blocking member, which is used to generate a force in the opposite direction of puncture to stop the puncture needle from puncturing. The operator can manually adjust the blocking member to make the puncture needle stay at the desired position, or adjust the depth-limiting member automatically through the main control unit. When the puncture needle is subjected to an instantaneous force and punctures, it stops under the reaction of the blocking member, which can prevent the puncture from being too deep.

[0024] Furthermore, the connection assembly also includes a power device, which is connected to the host and the blocking member, and is used to move the blocking member to a predetermined position under the control of the host. This method automatically adjusts the stop position of the blocking member, is convenient to operate, has high accuracy, and can also prevent the deviation of the puncture needle caused by manual adjustment.

[0025] Furthermore, the power device includes a motor for obtaining power from the main machine; a gear set and a matching transmission shaft, wherein the gear set is in transmission connection with the motor, and the transmission shaft is connected to the blocking member, and drives the blocking member 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 requirements of different puncture depths.

[0026] As an optional method, the connection assembly includes a force applying device, which is connected to the host and applies force to the fixing component under the control of the host. This implementation method applies force to the puncture needle through the connection assembly, which can simplify the structure and cost of the fixing component and facilitate replacement of the fixing component.

[0027] Further, the force-applying device is an ejection device, which applies an ejection thrust to the fixed component under the control of the host so as to push the puncture needle therein into the area to be punctured. Further, the ejection device is an electromagnetic ejector, including an electromagnet and a permanent magnet, the electromagnet is connected to the host, and the permanent magnet is arranged at the rear of the fixed component and opposite to the action surface of the electromagnet. Under the control of the host, the electromagnet changes the magnetism by reversing the electrode, and generates a corresponding attraction or repulsion force on the permanent magnet. In the repulsion state, the fixed component is ejected, driving the puncture needle to achieve rapid puncture. In the attraction state, the fixed component can be reset to the initial position. The electromagnetic ejector has the advantages of simple structure, low cost and stable performance. Optionally, the ejection device is a pneumatic ejector, or a hydraulic ejector, or a compression ejector with a spring as the main component.

[0028] 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 beneficial to providing protection and support for the connecting assembly and the fixing component. Furthermore, 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. Furthermore, 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. Furthermore, 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 part of the fixing component has a structure adapted to the pressing end of the puncture needle, which is used to fix the puncture needle, and the fixing component is detachably connected to the puncture body.

[0029] 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 a fixed component, and the angle between the puncture needle and the surface to be punctured can be changed by adjusting the angle of the fixed component. The angle adjustment mechanism can also be connected to a puncture body, and the angle between the puncture needle and the surface to be punctured can be changed by adjusting the inclination of the puncture body. The angle adjustment mechanism is connected to the host, and is used to adjust the angle under the control of the host.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] First pass Figure 2 The medical device integrating ultrasound imaging and puncture functions is schematically illustrated. The puncture mechanism in the embodiment of the present disclosure can be used in conjunction with such a device.

[0034] like Figure 2The figure shows a portable integrated ultrasound imaging and puncture device, which includes 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 100 controls the ultrasound probe 300 to perform ultrasound scanning, and converts the ultrasound echo into an electrical signal to generate a scanned surface image, which is then output by the display 200. The host 100 can simulate the position of the puncture needle in the image through the position of the puncture mechanism 400, 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 3 ), it can be folded and stored when not in use. 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 adopts a shape design that is easy to hold vertically. The ultrasonic probe 300 is at the bottom of the host and can be operated by the user with one hand. A puncture button is also provided on the surface of the host 100 shell to start the puncture operation.

[0035] Figure 3 A diagram schematically shows the usage status of the puncture mechanism of the embodiment of the present disclosure in combination with the integrated device.

[0036] like Figure 3 As shown, the puncture mechanism 400 in the embodiment of the present disclosure includes a puncture body 420, a puncture needle mounting seat 430 and an ejection device 450. The puncture needle 440 is mounted 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 scan surface image displayed on the display and the guide line in the figure, and activates the ejection device through the puncture button on the integrated device to eject the puncture needle mounting seat, thereby realizing rapid and automatic puncture.

[0037] The puncture mechanism provided in the embodiment of the present disclosure is suitable for an integrated ultrasonic imaging puncture device, and includes a puncture body, a puncture needle mounting seat and an ejection device, wherein a needle insertion channel is provided in the puncture body, and an ejection device is provided at the rear end of the needle insertion channel, and the ejection device is electrically connected to the host; the puncture needle mounting seat is arranged inside the puncture body, and the front end is used to fix the puncture needle, and the rear end is opposite to the ejection device. When the ejection device is ejected, the puncture needle mounting seat is ejected forward along the needle insertion channel to push the puncture needle for puncture.

[0038] The puncture process achieved by the puncture mechanism of the embodiment of the present disclosure is fast puncture, which has the advantages of strong puncture force and small trajectory deviation, and can effectively reduce the requirements for manual puncture by the operator.

[0039] The ejection device may be an electromagnetic ejection device, or a spring ejector, or a pneumatic ejector, a hydraulic ejector, etc. The electromagnetic ejection device will be described in detail below.

[0040] When the ejection device adopts an electromagnetic ejection device, the ejection device includes: a permanent magnet arranged at the rear end of the puncture needle mounting seat, and an electromagnet arranged at the rear end of the needle insertion channel, the action surface of the electromagnet faces the needle insertion channel, opposite to the permanent magnet, and the electromagnet attracts or repels the permanent magnet by electrode reversal under the control of the host, and when repelling, the puncture needle mounting seat is quickly ejected. The electromagnetic ejection method has the characteristics of simple structure, low cost, and easy operation, and can withstand high-temperature disinfection in a medical environment, which is a better implementation method.

[0041] Figure 4 and Figure 5 This is a schematic diagram of the structure of the electromagnetic catapult device.

[0042] Figure 4 The structure of the puncture body 420 is as follows: Figure 4 As shown, the puncture body 420 is in the shape of a long strip, with a long opening on the side and a needle insertion channel inside, and its cross section is an open circle. The rear end of the needle insertion channel is an electromagnet 425, and its electromagnetic action surface 426 faces the needle insertion channel.

[0043] Figure 5 The structure of the puncture needle mounting seat 430 is as follows: Figure 5 As shown, the front end of the puncture needle mounting seat is used to fix the puncture needle and is provided with a needle tail fixing groove. A permanent magnet 427 is provided at the rear end of the puncture needle mounting seat, which matches the shape of the action surface of the electromagnet 425. The electromagnet 425 is electrically connected to the host 100, and the electrode can be reversed under the control of the host 100 to achieve attraction and repulsion of the permanent magnet 427. When attracting, the puncture needle mounting seat 430 can be adsorbed on the top to achieve reset; when repelling, the puncture needle mounting seat 430 can be quickly ejected to drive the puncture needle to complete the puncture.

[0044] The long opening on the side of the puncture body 420 is convenient for the user to install the puncture needle into the puncture body 420 and fix it on the puncture needle mounting seat 430. The opening is an integrated structure with the needle insertion channel, has a certain elasticity, and can be opened when subjected to force. When installing the puncture needle, place the puncture needle along the direction of the opening, press the puncture needle 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.

[0045] The puncture body 420 can be an easily replaceable structure and can be detachably connected to the host for easy disinfection and cleaning.

[0046] The puncture needle mounting seat 430 can also be an easily replaceable structure, which is detachably connected to the puncture body 420 and has a corresponding fixed base to match the tail structure of puncture needles of different sizes and types. The puncture needle mounting seat 430 is provided with a corresponding needle tail fixing groove and a clamping opening. When the puncture needle is installed, the puncture needle is pressed into the needle tail fixing groove through the clamping opening and clamped and fixed.

[0047] The ejection puncture mechanism provided in the embodiment of the present disclosure can be used to perform rapid ejection puncture, reduce the deviation of the puncture trajectory, and save the operator's effort. To achieve better results, the embodiment of the present disclosure further provides an ejection puncture mechanism with limited depth.

[0048] Specifically, in Figure 2-5 Based on the illustrated embodiment, the puncture mechanism provided in the embodiment of the present disclosure also includes a limiting device, which includes a motor, a screw and a limiting plate. The screw is parallel to the needle insertion channel, and the limiting plate is fixed in the middle of the screw and is perpendicular to the screw. When the motor rotates, it drives the screw to rotate, and the limiting plate moves in the needle insertion channel with the rotation of the screw to change the staying position.

[0049] Figure 6 and Figure 7 It is a structural schematic diagram of a puncture mechanism with a limiting device.

[0050] like Figure 6 As shown, the puncture mechanism includes a puncture body 420, a puncture needle mounting seat 430, an ejection device 450 and a limiting device. Figure 7 As shown, the limiting device includes a screw 421, a limiting plate 424, a transmission gear 423 and a motor 422. The screw 421 is arranged parallel to the needle insertion channel, and the limiting plate 424 has an annular structure, which is fixed in the middle of the screw 421 and arranged perpendicularly to the screw, and can move up and down in the needle insertion channel. The motor 421 is electrically connected to the host. When the motor 422 rotates, it drives the screw 421 to rotate, and the limiting plate 424 moves in the needle insertion channel with the rotation of the screw 421 to change the stop position. The screw 421 is arranged inside the puncture body 420 and is connected to the motor 422 through the transmission gear 423. The function of the limiting plate 424 is to prevent the movement of the puncture needle mounting seat 430. When the limiting plate 424 stays in an appropriate position, it can prevent the puncture needle mounting seat 430 from advancing forward, thereby preventing the puncture needle from puncturing, thereby achieving the purpose of limiting the puncture depth.

[0051] The position where the limit plate 424 stops determines the depth of the puncture, and the stop position can be automatically calculated by the host through the ultrasonic scan image, the position of the puncture mechanism and the model of the puncture needle. The host outputs energy to the motor 422, drives the rotation of the motor 422 to control the depth of the screw, and accurately stops the limit plate at the set position. In addition, manual assistance can be used to set the depth. The host calculates the stop position of the limit plate according to the set depth and drives the rotation of the motor.

[0052] In addition, the limit device can also adopt a manually adjusted structure without the need for motor drive. The limit plate can be fixed in a certain position by means of a paddle or a buckle. This method is highly dependent on the operator and requires sufficient experience in the depth of puncture. It is only suitable for some scenarios.

[0053] The puncture needle mounting seat 430 is detachably connected to the screw rod 421, thereby achieving a detachable connection with the puncture body.

[0054] According to the puncture mechanism of the embodiment of the present disclosure, while automatically ejecting the puncture, it can also limit the puncture depth to prevent the puncture from being too deep, which has a better auxiliary effect on the puncture operation and helps to reduce the difficulty and level of the operation.

[0055] The above description is only a preferred embodiment of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present disclosure is not limited to the technical solution 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 the technical features with similar functions disclosed in the present disclosure (but not limited to) by each other.

Claims

1. An ejection puncture mechanism, suitable for medical puncture equipment with image assistance, characterized in that: include: A fixing component, the front portion of which is used to fix the pressing end of the puncture needle; An ejection device is connected to the host, and is used to apply an ejection thrust to the fixed component under the control of the host to push the puncture needle into the area to be punctured. The ejection device includes an electromagnet and a permanent magnet. The electromagnet is connected to the host, and the permanent magnet is arranged at the rear of the fixed component and opposite to the action surface of the electromagnet. The electromagnet changes its magnetism by reversing the electrode under the control of the host, thereby generating a corresponding attraction or repulsion force on the permanent magnet.

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

3. The puncture mechanism according to claim 2, characterized in that: The puncture body is in the shape of an elongated strip and has a puncture channel therein.

4. The puncture mechanism according to claim 3, characterized in that: The fixing component is arranged in the puncture channel and can slide in the puncture channel.

5. The puncture mechanism according to claim 3, characterized in that: A limiting hole is provided at the front end of the puncture channel for limiting the radial displacement of the puncture end of the puncture needle and only allowing the puncture end of the puncture needle to pass through.

6. The puncture mechanism according to claim 2, characterized in that: Also includes: An angle adjustment mechanism, through which the puncture body is connected to the host, and the inclination angle of the puncture body is adjusted under the control of the host.

7. 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.

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

9. 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 8.

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