Medical line

Abstract

The invention relates to the technical field of medical instruments, and provides a medical wire which comprises a conductor used for electric signal transmission; the isolation part is arranged on the conductor and is used for isolating electric signal leakage and electromagnetic interference of the conductor; and the sheath part sleeves the isolation part and is used for being in contact with a human body. External electromagnetic waves are absorbed or reflected through the isolation part, electromagnetic interference of strong interference equipment on the monitoring medical line is avoided, and the misdiagnosis risk is reduced; and an electromagnetic field generated by an internal signal can be limited in a shielding range, so that energy loss or interference to other equipment caused by outward radiation of the signal is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a medical wire. Background Art

[0002] Minimally invasive surgery refers to a surgical technique that uses modern medical devices and related equipment such as laparoscopes and thoracoscopes to enter the human body through small incisions or natural body cavities and complete surgical operations under the guidance of imaging technology. In cardiac surgery, due to the poor shielding effect of traditional medical wires, internal electromagnetic interference is likely to occur, affecting the operation, and internal electromagnetic leakage may occur, causing an impact on other devices. Summary of the Invention

[0003] Aiming at the deficiency of the existing technology in the poor shielding effect, the purpose of the present invention is to provide a medical wire with good shielding effect.

[0004] To solve the above problems, the present invention provides the following technical solutions: An embodiment of the present application provides a medical wire, including: a conductor for transmitting electrical signals; An isolation part provided on the conductor for isolating the leakage of electrical signals of the conductor and the electromagnetic interference received; A sheath part sleeved on the isolation part for contacting the human body.

[0005] In some embodiments, the isolation part includes an insulating layer and a shielding layer; The insulating layer is sleeved on the conductor for isolating electrical signals; The shielding layer is provided between the insulating layer and the sheath part or embedded in the insulating layer. The shielding layer is used for shielding electromagnetic interference and the leakage of internal electromagnetic signals; the shielding layer does not contact the conductor.

[0006] In some embodiments, the medical wire further includes a developing layer; the developing layer is located between the sheath part and the isolation part, and the developing layer is used for developing during fluoroscopy.

[0007] In some embodiments, the sheath part is biodegradable.

[0008] In some embodiments, the material of the sheath part includes at least one of thermoplastic elastomer, polyglycerol sebacate elastomer and polylactic acid.

[0009] In some embodiments, the sheath part includes an inner sheath and an outer sheath; The inner sheath is provided outside the isolation part; The outer sheath is provided outside the inner sheath, and the inner sheath and the outer sheath can be separated or installed.

[0010] In some embodiments, there is a gap between the outer sheath and the inner sheath, and the difference between the inner diameter of the outer sheath and the outer diameter of the inner sheath is 0.2 - 0.3 mm.

[0011] In some embodiments, the medical wire further includes a connecting member; the connecting member is used for the installation and fixation of the inner sheath and the outer sheath.

[0012] In some embodiments, the connecting member includes a first connecting member and a second connecting member; The first connecting member is disposed at both ends of the inner sheath; After the outer sheath is sleeved on the inner sheath, the second connecting member approaches the first connecting member, and the second connecting member presses the end of the outer sheath between the first connecting member and the second connecting member.

[0013] In some embodiments, the medical wire further includes a sealing member; the sealing member is used for sealing the inner sheath and the outer sheath at the connecting member.

[0014] The beneficial effects of the present invention are: the isolation part absorbs or reflects external electromagnetic waves, avoiding electromagnetic interference from strong interference devices to the monitoring medical wire and reducing the risk of misdiagnosis; it can also limit the electromagnetic field generated by internal signals within the shielding range, reducing energy loss caused by signal radiation outward or interference to other devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a perspective view of the present invention; Figure 2 is a cross-sectional view of one kind of medical wire of the present invention; Figure 3 is another cross-sectional view of the medical wire of the present invention.

[0016] REFERENCE NUMERALS: 100, medical wire; 110, conductor; 120, isolation part; 130, sheath; 140, imaging layer; 150, connecting member; 160, sealing member; 121, insulating layer; 122, shielding layer; 131, inner sheath; 132, outer sheath; 151, first connecting member; 152, second connecting member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts belong to the scope of protection of the present application.

[0018] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0019] For the convenience of describing the first direction, the second direction, and the third direction in the embodiments of the present application, the first direction is the left-right direction in the accompanying drawings, the second direction is the front-back direction in the accompanying drawings, and the third direction is the up-down direction in the accompanying drawings. Among them, the direction of the x-axis arrow is used as the "right" direction in the following text, the direction of the y-axis arrow is used as the "up" direction in the following text, and the direction of the z-axis arrow is used as the "back" direction in the following text. In the actual application of the present application, this is not limited thereto.

[0020] As Figures 1-2 shown, this embodiment provides a medical wire, which includes a conductor 110, an insulating part 120, and a sheath part 130. The conductor 110 is used for electrical signal transmission; the insulating part 120 is arranged outside the conductor 110 and is used for preventing the leakage of electrical signals of the conductor 110 and the electromagnetic interference received; the sheath part 130 is sleeved on the insulating part 120 and is used for contacting the human body. That is, when operating through the medical wire 100, under the isolation of the insulating part 120, it is possible to prevent the leakage of the circuit, and it is also possible to avoid the electromagnetic interference of strong interference devices on the monitoring medical wire by absorbing or reflecting external electromagnetic waves, reducing the risk of misdiagnosis; it is also possible to limit the electromagnetic field generated by the internal signal within the shielding range, reducing the energy loss caused by the outward radiation of the signal or the interference to other devices.

[0021] In some embodiments, the material of the conductor is copper alloy to ensure its sufficient tensile strength.

[0022] In some embodiments, the copper alloy can be one of copper-nickel alloy, copper-aluminum alloy, etc., so that its tensile strength is greater than 200 MPa.

[0023] As Figure 2 or Figure 3As shown, in this embodiment, the isolation part 120 includes an insulating layer 121 and a shielding layer 122; the insulating layer 121 is sleeved on the conductor 110 and is used to isolate electrical signals. The design of using the insulating layer 121 can prevent the outflow of current, enabling normal detection, and also avoid the harm caused by the outflow of current to the human body. The design of using the shielding layer 122 can prevent electromagnetic signal interference by absorbing or reflecting external electromagnetic waves.

[0024] As Figure 2 shown, in some embodiments, the shielding layer 122 is disposed between the insulating layer 121 and the sheath part 130, and the shielding layer 122 is used to shield electromagnetic interference and the leakage of internal electromagnetic signals; As Figure 3 shown, in another embodiment, the shielding layer 122 is embedded in the insulating layer 121, that is, the shielding layer 122 does not contact the conductor 110, and the shielding layer 122 is used to shield electromagnetic interference and the leakage of internal electromagnetic signals.

[0025] In some embodiments, the shielding layer 122 is one of a tin-plated braided layer and a silver-plated braided layer; In some embodiments, the examples of the shielding layer 122 are not limited to the tin-plated braided layer and the silver-plated braided layer. Through braiding and surface plating treatment, the shielding layer 122 has a good shielding effect on high-frequency interference.

[0026] As Figure 2 Or Figure 3 shown, in some embodiments, a developing layer 140 is further included; the developing layer 140 is located between the sheath part 130 and the insulating part, and the developing layer 140 is used for developing during fluoroscopy. That is, during the movement of the medical wire 100, the dynamic state of the development is observed through a fluoroscopy device, which is convenient for precise positioning and real-time observation of the traveling state.

[0027] The developing layer 140 is composed of one of barium sulfate and iodide, ensuring that the medical wire 100 is clearly visible under fluoroscopy and facilitating the precise operation of doctors.

[0028] In this embodiment, the sheath part 130 is biodegradable. The use of a biodegradable sheath part 130 can prevent the problem of foreign body retention caused by the shedding of the outer components of the sheath part 130 during the movement of the medical wire 100.

[0029] In this embodiment, the material of the sheath part 130 includes at least one of thermoplastic elastomer and polyglycerol sebacate elastomer and polylactic acid. That is, the biocompatibility and biodegradability of thermoplastic elastomer, polyglycerol sebacate elastomer, and polylactic acid are used to solve the problem of foreign body retention.

[0030] In some embodiments, the material of the sheath portion 130 includes a thermoplastic elastomer and a glycerol sebacate elastomer.

[0031] In some embodiments, the material of the sheath portion 130 includes a thermoplastic elastomer and polylactic acid.

[0032] In some embodiments, the material of the sheath portion 130 includes a thermoplastic elastomer, a glycerol sebacate elastomer, and polylactic acid.

[0033] As Figures 1-2 shown, in this embodiment, the sheath portion 130 includes an inner sheath 131 and an outer sheath 132; the inner sheath 131 is disposed outside the isolation portion 120; the outer sheath 132 is disposed outside the inner sheath 131, and the inner sheath 131 and the outer sheath 132 can be separated or installed. Since the absorbable medical thread 100 is relatively expensive, and in order to prevent the outer side of the absorbable medical thread 100 from being damaged, after being used a certain number of times, a new medical thread 100 needs to be replaced, which will increase the medical cost. By adopting the arrangement of the inner sheath 131 and the outer sheath 132, and the inner sheath 131 and the outer sheath 132 can be separated or installed, it is convenient to replace the outer sheath 132, thereby reducing the cost of replacing the entire medical thread 100.

[0034] As Figure 2 or Figure 3 shown, in this embodiment, there is a gap between the outer sheath 132 and the inner sheath 131, and the difference between the inner diameter of the outer sheath 132 and the outer diameter of the inner sheath 131 is 0.2 - 0.3 mm.

[0035] In some embodiments, the difference between the inner diameter of the outer sheath 132 and the outer diameter of the inner sheath 131 is 0.2 mm or 0.3 mm. When the diameter difference is 0.2 mm, it is convenient to remove the outer sheath 132, and it can also prevent large - distance offset problems between the inner sheath 131 and the outer sheath 132, that is, to ensure the stability during the operation of the medical thread 100.

[0036] In this embodiment, the thickness of the outer sheath 132 is 0.1 - 0.3 mm.

[0037] In some embodiments, the thickness of the outer sheath 132 is 0.1 mm, 0.2 mm, or 0.3 mm. When the thickness of the outer sheath 132 is 0.2 mm, it is the optimal thickness. That is, it can ensure the service life, and it can also ensure that there will be no problems such as wrinkles due to being too thin or difficulty in bending due to being too thick.

[0038] As Figure 1As shown, in this embodiment, the connecting member 150 includes a first connecting member 151 and a second connecting member 152; the first connecting member 151 is provided at both ends of the inner sheath 131; when the outer sheath 132 is sleeved on the inner sheath 131, the second connecting member 152 approaches the first connecting member 151, and the second connecting member 152 presses the end of the outer sheath 132 between the first connecting member 151 and the second connecting member 152. That is to say, when the outer sheath 132 needs to be installed, the second connecting member 152 is separated from the first connecting member 151, and the outer sheath 132 is moved to the outside of the inner sheath 131 from one side. When the outer sheath 132 completely sleeves the inner sheath 131, only by installing the second connecting member 152 on the first connecting member 151 can the end of the outer sheath 132 be pressed between the first connecting member 151 and the second connecting member 152 to prevent the separation of the inner sheath 131 and the outer sheath 132. When the outer sheath 132 needs to be removed, the second connecting member 152 is separated from the first connecting member 151, and the outer sheath 132 is moved out of the inner sheath 131 from one side to complete the separation of the inner sheath 131 and the outer sheath 132.

[0039] As Figure 1 , in some embodiments, the first connecting member 151 is provided with an external thread, the second connecting member 152 is provided with an internal thread, and the first connecting member 151 and the second connecting member 152 are connected by threads.

[0040] As Figure 2 or Figure 3 As shown, in this embodiment, a seal 160 is further included; the seal 160 is used for sealing the inner sheath 131 and the outer sheath 132 at the connecting member 150. When the outer sheath 132 is installed with the inner sheath 131 through the connecting member 150, the seal 160 prevents liquid leakage at the ends between the inner sheath 131 and the outer sheath 132 during use.

[0041] The seal 160 includes a sealing ring; the sealing ring is sleeved on the first connecting member 151, and the outer sheath 132 is located between the second connecting member 152 and the sealing ring. By placing the seal 160 on the side of the outer sheath 132 close to the inner sheath 131, a better sealing effect is formed between the inner sheath 131 and the outer sheath 132.

[0042] In summary, the present invention provides a medical wire, which absorbs or reflects external electromagnetic waves through the isolation part, avoids electromagnetic interference of strong interference devices on the monitoring medical wire, and reduces the risk of misdiagnosis; it can also limit the electromagnetic field generated by internal signals within the shielding range, reducing energy loss caused by signal radiation outward or interference to other devices.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A medical line, characterized in that: include: Conductors, used for electrical signal transmission; An isolation part, provided on the conductor, for isolating the conductor from electrical signal leakage and electromagnetic interference; The sheath part is sleeved on the isolation part and is used for contacting with the human body.

2. The medical cable according to claim 1, characterized in that: The isolation part includes an insulating layer and a shielding layer; The insulating layer is sleeved on the conductor to isolate the electrical signal; The shielding layer is arranged between the insulating layer and the sheath part or embedded in the insulating layer, and the shielding layer is used to shield electromagnetic interference and leakage of internal electromagnetic signals; the shielding layer does not contact the conductor.

3. The medical cable according to claim 1, characterized in that: The medical wire further comprises a developing layer; the developing layer is located between the sheath portion and the insulating portion, and the developing layer is used for developing during perspective viewing.

4. The medical cable according to claim 1, characterized in that: The sheath portion is degradable.

5. The medical cable according to claim 4, characterized in that: The material of the sheath portion includes at least one of a thermoplastic elastomer, polyglyceryl sebacate elastomer and polylactic acid.

6. The medical cable according to claim 1 or 5, characterized in that: The sheath portion comprises an inner sheath and an outer sheath; The inner sheath is arranged outside the isolation part; The outer sheath is arranged outside the inner sheath, and the inner sheath and the outer sheath can be separated or installed.

7. The medical cable according to claim 6, characterized in that: There is a gap between the outer sheath and the inner sheath, and the difference between the inner edge diameter of the outer sheath and the outer edge diameter of the inner sheath is 0.2-0.3 mm.

8. The medical cable according to claim 6, characterized in that: The medical cable also includes a connector; the connector is used for installing and fixing the inner sheath and the outer sheath.

9. The medical cable according to claim 8, characterized in that: The connecting member includes a first connecting member and a second connecting member; The first connecting member is provided at both ends of the inner sheath; When the outer sheath is sleeved on the inner sheath, the second connecting member approaches the first connecting member, and the second connecting member presses the end of the outer sheath between the first connecting member and the second connecting member.

10. The medical cable according to claim 9, characterized in that: The medical cable further comprises a sealing member; the sealing member is used for sealing the inner sheath and the outer sheath at the connecting member.

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