Medical portable electrostatic spinning device

Abstract

The utility model relates to the technical field of manufacturing of medical instruments, in particular to a medical portable electrostatic spinning device which is simple and convenient to operate, reasonable in structure and capable of forming nanofiber braided fabrics, and is characterized in that a shell comprises a hollow strip-shaped shell and a handle shell communicated with the strip-shaped shell, the handle shell is connected to the rear end of the strip-shaped shell, a connecting opening is formed in the front end of the strip-shaped shell, and the front end of the infusion tube extends to the connecting opening in the front end of the shell; an extension pipe is further arranged, a gas conveying pipeline and a liquid conveying pipeline are arranged in the extension pipe, two electrodes are embedded in the extension pipe, the rear ends of the two electrodes are connected with the voltage output end of the high-voltage electrostatic generation component in the shell, and the extension pipe is connected between the spraying head and the connector at the front end of the shell. And the rear end of the liquid conveying pipeline in the extension pipe is connected with the front end of the liquid conveying pipe at the front end of the shell.

Description

Technical field:

[0001] The utility model relates to the technical field of medical device manufacturing, in particular to a portable medical electrostatic spinning device which is simple to operate, reasonable in structure and can form nanofiber braids. Background technology:

[0002] In the clinical medical field, portable electrospinning devices are being widely researched and applied to generate nanofiber materials on-site. Traditional portable electrospinning devices typically consist of a small high-voltage power supply and an injection device, which convert a polymer solution into nanofibers through electrospinning. Existing nanofiber materials often require prefabrication before surgery and then application during the procedure, lacking flexibility and immediacy. For example, patent CN104790049B describes a portable electrospinning device and its method of use. Designed for on-site nanofiber generation, the device features a relatively compact structure and simple operation. The core components of the device include a dry cell power supply, a high-voltage electrostatic generator (to provide the voltage required for electrospinning), a spinning jet (to deliver the polymer solution), and a gas generator (to emit a flowing gas in the same direction as the spinning jet). Furthermore, to facilitate long-distance electrospinning, patent CN110670152A discloses a nozzle device with a protective insulating tube and metal capillary for extended electrospinning. A metal capillary tube, serving as the electrospinning jet delivery conduit, is placed along the central axis of a protective insulating tube. A wire is also placed within the device to supply high-voltage static electricity to the metal capillary tube. This solution can be used for targeted application to deep wounds or internal wounds.

[0003] The above-mentioned existing technologies have the following disadvantages: (1) The device structure is not specially designed for laparoscopic surgery, which makes it inconvenient to operate; (2) Traditional equipment usually only supports a single type of liquid material and lacks diverse application possibilities; (3) An electrode sheet opposite to the electrospinning jet needs to be set at the target deposition position as a receiving device to guide the spinning direction, so there is a risk of leakage when applied in situ in the body. Summary of the invention:

[0004] In view of the shortcomings and deficiencies in the prior art, the utility model provides a portable medical electrospinning device which is simple to operate, has a reasonable structure and can form nanofiber braids.

[0005] The utility model is achieved through the following measures:

[0006] A medical portable electrospinning device is provided with a shell, in which an electrospinning generating mechanism is provided. The electrospinning generating mechanism includes a liquid storage tank, a jet power component, a gas generating component, a control component, a high-voltage electrostatic generating component and a power supply. The liquid storage tank is connected to an infusion tube. The device is characterized in that the shell includes a hollow strip shell and a handle shell connected to the strip shell, the handle shell is connected to the rear end of the strip shell, the front end of the strip shell is provided with a connection port, and the front end of the infusion tube extends to the connection port at the front end of the shell; an extension tube is also provided, and a gas delivery pipeline is provided in the extension tube. Two electrodes are buried in the liquid delivery pipeline, the rear ends of the two electrodes are connected to the voltage output end of the high-voltage electrostatic generating component in the shell, the extension tube is connected between the injection head and the front end connection port of the shell, the rear end of the liquid delivery pipeline in the extension tube is connected to the front end of the infusion tube at the front end of the shell, the injection head includes a capillary metal needle and a metal bell-mouth electrode, the front end of the liquid delivery pipeline in the extension tube is connected to the capillary metal needle, the gas delivery pipeline in the extension tube is connected to the metal bell-mouth electrode, and the front ends of the two electrodes in the extension tube are respectively connected to the capillary metal needle and the metal bell-mouth electrode.

[0007] The liquid storage tank of the present invention includes multiple independent compartments for holding liquids of different components. Furthermore, the liquid storage tank is arranged in the strip shell area of ​​the shell and is located in front of the injection power component. When working, the injection power component pushes the liquid in the liquid storage tank to be sent out along the infusion pipe.

[0008] The extension tube of the present invention is an insulating material pipeline. Furthermore, a liquid delivery pipeline is provided in the extension tube coaxially with the extension tube. The liquid delivery pipeline can be made of non-metallic material. Furthermore, when the liquid delivery pipeline is made of metal material, the embedded electrode in the extension tube can be replaced to realize the connection between the capillary metal needle and the high-voltage electrostatic generating component in the shell. Furthermore, the metal bell-mouth electrode is grounded.

[0009] The liquid storage tank of the utility model is connected to the infusion tube, the injection power component is used to send the liquid in the liquid storage tank along the infusion tube, the gas generating component is used to output the flowing gas in the same direction as the spinning jet direction, and the control component is respectively connected to the injection power component, the gas generating component, the high-voltage static electricity generating component and the power supply. The control component is provided with an operation button, which is fixed on the outside of the handle shell to facilitate the user to operate when grasping the handle.

[0010] When the utility model is in use, the extension tube is connected to the end of the shell, and the other end of the extension tube is connected to the injection head. The outer wall of the extension tube is made of insulating material, and the interior is connected by a liquid injection pipeline, a gas pipeline and an electrical pipeline. Each pipeline is arranged axially of the extension tube. The injection head is composed of a capillary metal needle and a bell-mouth electrode. The bell-mouth is connected to the gas pipeline in the extension tube, and the capillary metal needle is connected to the liquid injection pipeline in the extension tube. The two electrodes in the electrical pipeline in the extension tube are respectively connected to the capillary metal needle and the bell-mouth electrode. A stable electric field is formed between the two electrodes, and the electrostatic spinning jet is broken in this electric field. At the same time, the solvent evaporates to form extremely fine fibers. Due to the airflow-assisted injection, the fibers cannot remain normally on the bell-mouth electrode, but are guided by the airflow to be deposited on the target position to achieve in-situ spinning. Compared with the previous technical solutions in which two electrodes are not set at the same time, it is necessary to set an electrode sheet with an electric charge opposite to that carried by the electrospinning jet at the target deposition position as a receiving device to guide the spinning direction. Therefore, there is a risk of leakage when applied in situ in the body; the operation buttons of the utility model can select the working mode, voltage gear, and airflow gear, and the operation buttons can adjust the working status of the jet power device, high-voltage electrostatic generator, and gas generator.

[0011] Compared with the existing technology, the present invention has the following advantages: (1) Through in-situ electrospinning technology, nanofiber braids can be directly generated at the required location during surgery, providing better adaptability and immediate therapeutic effect. (2) Compatibility with multiple spinning materials: The liquid storage tank has multiple chambers that can store different absorbable material solutions, even including medical glue, so as to achieve the combined use of multiple materials and enhance the therapeutic effect and adaptability. (3) Convenience of minimally invasive operation: The appearance of this device is similar to that of a laparoscopic stapler. It is easy to hold and operate with one hand, suitable for minimally invasive surgery, and reduces the trauma of surgery and recovery time. Description of the drawings:

[0012] Attachment Figure 1 It is a schematic diagram of the shell and its internal structure of the utility model.

[0013] Attachment Figure 2 It is a structural diagram of the injection head in the utility model.

[0014] Attachment Figure 3 It is a schematic diagram of the connection of the extension tube in the utility model.

[0015] Figure numerals: liquid storage tank 1, injection power component 2, gas generating component 3, control component 4, high-voltage static electricity generating component 5, power supply 6, infusion tube 7, strip shell 8, handle shell 9, extension tube 10, gas delivery pipeline 11, liquid delivery pipeline 12, injection head 13, capillary metal needle 14, metal bell-mouth electrode 15, operation button 16, firing button 17, gas pipeline 18. Specific implementation method:

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Example:

[0018] This example provides a Figure 1 and attached Figure 3 The portable medical electrospinning device shown is provided with a shell, in which an electrospinning generating mechanism is provided. The electrospinning generating mechanism includes a liquid storage tank 1, a jet power component 2, a gas generating component 3, a control component 4, a high-voltage electrostatic generating component 5 and a power supply 6. The liquid storage tank 1 is connected to the infusion tube 7. The shell includes a hollow strip shell 8 and a handle shell 9 connected to the strip shell 8. The handle shell 9 is connected to the rear end of the strip shell 8. The front end of the strip shell 8 is provided with a connection port, and the front end of the infusion tube 7 extends to the connection port at the front end of the shell. ; An extension tube 10 is also provided, in which a gas delivery pipeline 11 and a liquid delivery pipeline 12 are provided and two electrodes are buried. The rear ends of the two electrodes are connected to the voltage output end of the high-voltage electrostatic generating component 5 in the shell. The extension tube 10 is connected between the injection head 13 and the front end connection port of the shell. The rear end of the liquid delivery pipeline 12 in the extension tube 10 is connected to the front end of the infusion tube 7 at the front end of the shell. The injection head 13 includes a capillary metal needle 14 and a metal bell-mouth electrode 15. In this example, the capillary metal needle 14 is coaxially arranged in the bell-mouth electrode 15;

[0019] In this example, the front end of the liquid delivery pipeline 12 in the extension tube 10 is connected to the capillary metal needle 14, and the front and rear ends of the gas delivery pipeline 11 in the extension tube 10 are respectively connected to the rear port of the metal bell-mouth electrode 15 of the gas pipeline 18 inside the shell, so that the gas generated by the gas generating component 3 in the shell is delivered to the metal bell-mouth electrode 15 through the gas pipeline 18 and the gas delivery pipeline 11. The front ends of the two electrodes in the extension tube 10 are respectively connected to the capillary metal needle 14 and the metal bell-mouth electrode 15, wherein the metal bell-mouth electrode 15 is grounded, and the front end of the capillary metal needle 14 is located inside the metal bell-mouth electrode 15 to avoid the risk of leakage;

[0020] The liquid storage tank in this example includes multiple independent compartments for containing liquids of different components. Furthermore, the liquid storage tank 1 is arranged in the strip-shaped housing 8 area of ​​the housing and is located in front of the injection power component 2. During operation, the injection power component 2 pushes the liquid in the liquid storage tank 1 to be sent out along the liquid delivery tube 7;

[0021] The extension tube 10 in this example is an insulating material pipeline, and a liquid delivery pipeline 12 is provided in the extension tube 10 coaxially arranged with the extension tube 10. The liquid delivery pipeline 12 can be made of non-metallic material. Furthermore, when the liquid delivery pipeline 12 is made of metal material, it can replace the pre-buried electrode in the extension tube 10 to realize the connection between the capillary metal needle 14 and the high-voltage electrostatic generating component in the shell, and the metal bell-mouth electrode 15 is grounded.

[0022] In this example, the liquid storage tank 1 is connected to the infusion tube 7, the jet power component 2 is used to deliver the liquid in the liquid storage tank along the infusion tube, and the gas generating component 3 is used to output flowing gas in the same direction as the spinning jet. The control component is respectively connected to the jet power component 2, the gas generating component 3, the high-voltage static electricity generating component 5 and the power supply 6. The control component is provided with an operation button, which is fixed to the outside of the handle housing for the user to operate when grasping the handle. The control component is also connected to the firing button on the outside of the housing to start the working state of the entire device.

[0023] When in use, the extension tube 10 is connected to the front end of the shell, and the other end of the extension tube 10 is connected to the injection head 13. The outer wall of the extension tube 10 is made of insulating material, and there are gas delivery pipelines 11 and liquid delivery pipelines 12 inside. The gas delivery pipeline 11 is connected to the electrical pipeline, and each pipeline is arranged axially of the extension tube 10. The injection head 13 is composed of a capillary metal needle 14 and a bell-mouth electrode 15. The bell-mouth electrode 15 is connected to the gas pipeline in the extension tube 10, and the capillary metal needle 14 is connected to the liquid delivery pipeline 12 in the extension tube 10. The two electrodes in the electrical pipeline in the extension tube 10 are respectively connected to the capillary metal needle 14 and the bell-mouth electrode 15, forming a stable gas flow between the two electrodes. A certain electric field is created in which the electrospinning jet is broken up, and the solvent evaporates to form extremely fine fibers. Due to the airflow-assisted injection, the fibers cannot remain on the bell-mouth electrode 15 normally, but are guided by the airflow to be deposited on the target position to achieve in-situ spinning. Compared with the previous technical solutions in which two electrodes are not set at the same time, an electrode sheet with an electric charge opposite to that carried by the electrospinning jet needs to be set at the target deposition position as a receiving device to guide the spinning direction. Therefore, there is a risk of leakage when applied in situ in the body. The operation buttons of the utility model can select the working mode, voltage gear, and airflow gear, and the operation buttons can adjust the working status of the jet power device, high-voltage electrostatic generator, and gas generator.

Claims

1. A portable medical electrospinning device, comprising a housing, an electrospinning generating mechanism disposed within the housing, the electrospinning generating mechanism comprising a liquid storage tank, a jet power component, a gas generating component, a control component, a high-voltage electrostatic generating component, and a power supply, wherein the liquid storage tank is connected to an infusion tube, and wherein: The shell includes a hollow strip shell and a handle shell connected to the strip shell, the handle shell is connected to the rear end of the strip shell, and a connection port is opened at the front end of the strip shell, and the front end of the infusion tube extends to the connection port at the front end of the shell; an extension tube is also provided, in which a gas delivery pipeline and a liquid delivery pipeline are provided and two electrodes are buried, and the rear ends of the two electrodes are connected to the voltage output end of the high-voltage electrostatic generating component in the shell, the extension tube is connected between the injection head and the front end connection port of the shell, the rear end of the liquid delivery pipeline in the extension tube is connected to the front end of the infusion tube at the front end of the shell, the injection head includes a capillary metal needle and a metal bell-mouth electrode, the front end of the liquid delivery pipeline in the extension tube is connected to the capillary metal needle, the gas delivery pipeline in the extension tube is connected to the metal bell-mouth electrode, and the front ends of the two electrodes in the extension tube are respectively connected to the capillary metal needle and the metal bell-mouth electrode.

2. A portable medical electrospinning device according to claim 1, characterized in that: The liquid storage tank includes a plurality of independent compartments for containing liquids of different components.

3. A portable medical electrospinning device according to claim 2, characterized in that: The liquid storage tank is arranged in the strip-shaped housing area of ​​the housing and is located in front of the injection power component.

4. A portable medical electrospinning device according to claim 1, characterized in that: The extension tube is an insulating material pipeline, and a liquid delivery pipeline is provided in the extension tube coaxially arranged with the extension tube. The liquid delivery pipeline is made of non-metallic material, or, when the liquid delivery pipeline is made of metal material, the liquid delivery pipeline replaces the embedded electrode in the extension tube to realize the connection between the capillary metal needle and the high-voltage electrostatic generating component in the shell, and the metal bell-mouth electrode is grounded.

5. A portable medical electrospinning device according to claim 1, characterized in that: The liquid storage tank is connected to the infusion tube, the injection power component is used to send the liquid in the liquid storage tank out along the infusion tube, the gas generating component is used to output flowing gas in the same direction as the spinning jet, and the control component is respectively connected to the injection power component, the gas generating component, the high-voltage electrostatic generating component and the power supply. The control component is provided with an operation button, which is fixed on the outside of the handle shell.

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