Double-channel sleeve needle applicable to magnetic field application
A dual-channel, trocar technology, applied to trocars, needles, catheters, etc., can solve the problems of needle blockage, increased puncture operation treatment costs, unfavorable fixation and disinfection protection, etc. , Easy to fix and the effect of disinfection care
Pending Publication Date: 2020-05-15
HARBIN MEDICAL UNIVERSITY
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Problems solved by technology
[0005] 1. The puncture needle is used for one-way infusion, that is, infusion from the outside to the body. It does not have bidirectionality, and cannot realize the drainage function from the body to the outside.
[0006] 2. The existing puncture needles matching the indwelling cystic structures below the body surface do not have the characteristics suitable for magnetic field application. The puncture needle needs to be removed during the MRI examination of the patient, which increases the pain of the patient and increases the treatment cost of the puncture operation
[0007] 3. The needle end of the puncture needle is a single channel, and there is a risk of needle blockage, especially when the nature of the drainage fluid is abnormal, the risk of needle blockage will increase significantly
[0008] 4. The body of the existing puncture needle matching the indwelling cystic structure below the body surface is rigid in design. At the same time, its rigid body is in contact with the body surface tissue, and the angle cannot be changed. Shape, not conducive to fixation and disinfection protection
Method used
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[0038] like Figure 1-Figure 4 As shown, the present invention provides a dual-channel trocar suitable for magnetic field application, mainly including a cannula 10 and a puncture needle 20, wherein:
[0039] The cannula 10 is composed of two parts, the needle point 11 and the main body 15. The needle point 11 is made of a material suitable for the magnetic field, such as: titanium metal, aviation aluminum, carbon fiber, etc., and does not need to be replaced or replaced when nuclear magnetic resonance examination is required. Removed, it has a wider range of application safety in specific environments; and the needle tip 11 is made of the above materials and has relatively high hardness, which is suitable for piercing into subcutaneous and cystic devices without deformation; one end of the needle tip 11 has a bevel And the other end has the connection section 12 that diameter becomes smaller; One end of described main body 15 is closely connected with the connection section 1...
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The invention provides a double-channel sleeve needle applicable to magnetic field application. The double-channel sleeve needle mainly comprises a sleeve and a puncture needle, wherein the sleeve consists of two combined parts, namely a pinhead and a main body; the pinhead is made of a material applicable to a magnetic field; the main body part is made of a medical plastic and thus has flexibility; a main needle tail is formed at the other end of the main body; a first angle marker is formed at the main needle tail; one end of the puncture needle is a head end; the other end of the puncture needle is fixed on a positioning cover; and a second angle marker which can be observed from outside is arranged on the positioning cover or the tail end of the puncture needle.
Description
technical field [0001] The invention relates to a double-channel soft body side-hole trocar suitable for magnetic field application, which is mainly used for puncturing a sac-shaped channel placed under the patient's body surface (skin or scalp) to establish a complete drainage channel. On the one hand, this device can be used to complete the establishment of a conventional drug delivery channel from the outside to the body, and on the other hand, there is also a drainage channel to complete the function of drainage from the body to the outside. In addition, the head end of the puncture needle is made of materials suitable for magnetic field applications, and the device is suitable for magnetic field applications as a whole, which provides convenience for patients' MRI examinations, and at the same time, it is convenient for operation, application, nursing and disinfection. Background technique [0002] With the advancement of medical technology and people's living standards...
Claims
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IPC IPC(8): A61B17/34A61M5/158A61M25/06
CPCA61B17/3421A61M5/158A61M25/0662
Inventor 程义鹏刘菲岳鹏高伟达
Owner HARBIN MEDICAL UNIVERSITY