CN214175721U - Cable and ventricular assist device - Google Patents

Abstract

The utility model belongs to the technical field of medical instrument, especially, relate to a cable and ventricular auxiliary device, the cable includes first bullet-proof silk, shellproof silk weaving layer, first insulation layer and many wires, and many wires twine in first bullet-proof silk along the extending direction spiral of first bullet-proof silk in order to form first sinle silk, shellproof silk weaving layer cladding in first sinle silk, first insulation layer cladding in shellproof silk weaving layer. The first core is wrapped with the bulletproof wire braided layer, and the first insulating layer is wrapped outside the bulletproof wire braided layer, so that the cable has better overall bending resistance, and in a bending resistance test, the cable can be bent for 60 ten thousand times without breaking under the harsh test condition that the hanging weight is 500g, the bending angle is +/-45 degrees, the bending radius reaches 1.5 times of the diameter, and the swinging frequency reaches 2Hz (120 times/min).

Description

Cable and ventricular assist device

Technical Field

The application belongs to the technical field of medical equipment, especially, relate to a cable and ventricular assist device.

Background

The cable is usually directly electrically connected with the device, the service life of the cable directly affects the service life of the device, for the device installed in the living organism, the cable must have good bending resistance, especially for the device worn or implanted for a long time, such as an artificial heart, the artificial heart implanted in animals or human beings is usually electrically connected with the external device through the cable, animals and human beings are often in an active state, so that the cable is often required to be bent, and the current cable has poor bending resistance and cannot meet the requirement of long-term use of the device.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a cable with better bending resistance.

In order to achieve the purpose, the technical scheme adopted by the application is as follows:

in a first aspect: the utility model provides a cable, includes first bulletproof silk, shellproof silk weaving layer, first insulating layer and many wires, many the wire is followed the extending direction spiral of first bulletproof silk twine in first bulletproof silk is in order to form first sinle silk, the cladding of bulletproof silk weaving layer in first sinle silk, the cladding of first insulating layer in shellproof silk weaving layer.

Optionally, each of the conductive wires includes a second bulletproof wire, a second insulating layer, and a metal foil wire, the metal foil wire is spirally wound around the second bulletproof wire along an extending direction of the second bulletproof wire to form a second wire core, and the second insulating layer is wrapped around the second wire core.

Optionally, the cross-section of the metal foil wire is quadrilateral.

Optionally, the metal foil wire includes a tin-copper alloy wire and a silver metal layer coated on the tin-copper alloy wire.

Optionally, the second insulating layer is a perfluoroalkoxy resin layer or a perfluoroethylene propylene copolymer layer.

Optionally, the first bulletproof wire is formed by twisting a plurality of bulletproof wires, and/or the second bulletproof wire is formed by twisting a plurality of bulletproof wires.

Optionally, the ballistic resistant filaments are poly-paraphenylene terephthalamide filaments.

Optionally, the first insulating layer is a silicone rubber layer or a thermoplastic polyurethane elastomer rubber layer.

Optionally, the bulletproof filament braided layer comprises a net structure braided by a plurality of poly-p-phenylene terephthalamide fiber filaments.

The embodiment of the application has at least the following beneficial effects: the cable that this application embodiment provided, it has the first sinle silk that is formed by the first bullet silk of many wire spiral winding. Therefore, the first cable core formed by twisting the plurality of conducting wires and the first bulletproof wire has good bending resistance, and the first cable core is wrapped with the bulletproof wire braided layer and the first insulating layer, so that the cable has better overall bending resistance. In the bending resistance test, the cable can be bent for 60 ten thousand times without disconnection under the harsh test conditions that the hanging weight is 500g, the bending angle is +/-45 degrees, the bending radius reaches 1.5 times of the diameter, and the swinging frequency reaches 2Hz (120 times/min).

In a second aspect: a ventricular assist device is provided, comprising a percutaneous cable, wherein the percutaneous cable is the cable.

The ventricular assist device provided by the embodiment of the application comprises the cable, and the cable can be bent for 60 ten thousand times without disconnection under the harsh test conditions that the hanging weight is 500g, the bending angle is +/-45 degrees, the bending radius reaches 1.5 times of the diameter, and the swinging frequency reaches 2Hz (120 times/min), so that the ventricular assist device has better bending resistance and is beneficial to prolonging the service life of the ventricular assist device.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a cross-sectional cutaway view of a cable provided by an embodiment of the present application;

fig. 2 is a perspective view of a metal foil wire of a cable provided in an embodiment of the present application;

FIG. 3 is a cross-sectional cutaway view of the metal foil wire shown in FIG. 2;

fig. 4 is a cross-sectional cut-away view of a first ballistic wire of a cable provided by an embodiment of the present application.

Wherein, in the figures, the respective reference numerals:

10-cable 11-first core 12-first bulletproof wire

13-conducting wire 14-bulletproof wire braided layer 15-first insulating layer

16-second wire core 17-second bulletproof wire 18-metal foil wire

19-second insulating layer 121-bulletproof wire 181-tin-copper alloy wire

182-silver metal layer.

Detailed Description

Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1-4 are exemplary and intended to be used to illustrate the present application and should not be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be considered as limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

As shown in fig. 1, embodiments of the present application provide a cable 10 that may be used in any scenario where a cable is required, particularly a percutaneous cable suitable as a ventricular assist device. When the device is applied to a ventricular assist device, the cable 10 is electrically connected with a blood pump, and an external control device or a power supply device and the like are electrically connected with the blood pump through the cable 10.

Specifically, the cable 10 includes a first bulletproof wire 12, a bulletproof wire braid 14, a first insulating layer 15 and a plurality of wires 13, the plurality of wires 13 are spirally wound around the first bulletproof wire 12 along the extending direction of the first bulletproof wire 12 to form a first core 11, so that the bending resistance of the first core 11 can be improved, the bulletproof wire braid 14 is wrapped on the first core 11, and the first insulating layer 15 is wrapped on the bulletproof wire braid 14, so that the overall bending resistance of the cable 10 can be obviously improved. Meanwhile, the presence of the first insulating layer 15 also insulates the cable 10 from the outside while protecting the first core 11, the bulletproof wire braid 14, and the like within the first insulating layer 15.

The cable 10 provided by the embodiments of the present application is further described below: the cable 10 provided by the embodiment of the application has a first wire core 11 formed by spirally winding a plurality of conducting wires 13 around a first bulletproof wire 12. Therefore, the first wire core 11 formed by winding the plurality of wires 13 on the first bulletproof wire 12 has good bending resistance, and the first wire core 11 is wrapped with the bulletproof wire woven layer 14 and the bulletproof wire woven layer 14 is wrapped with the first insulating layer 15, so that the cable 10 has better overall bending resistance to achieve a better level, which is embodied in a bending resistance test, and the cable 10 can be bent 60 ten thousand times without breaking under a harsh test condition that the hoisting weight is 500g, the bending angle is +/-45 degrees, the bending radius reaches 1.5 times of the diameter, and the swinging frequency reaches 2Hz (120 times/min).

In one embodiment, as shown in fig. 1, each conductive wire 13 includes a second bulletproof wire 17, a second insulating layer 19, and a metal foil wire 18, the metal foil wire 18 is spirally wound around the second bulletproof wire 17 along an extending direction of the second bulletproof wire 17 to form a second wire core 16, and the second insulating layer 19 is wrapped around the second wire core 16.

Specifically, as a specific configuration form of the wire 13, it has the second wire core 16 formed by spirally winding the metal foil wire 18 on the second bulletproof wire 17, and similarly, as above, since the second wire core 16 is formed by winding the metal foil wire 18 on the second bulletproof wire 17, the second wire core 16 also has better bending resistance, so as to further improve the overall bending resistance of the cable 10; and the second insulating layer 19 wrapped around the second core 16 can insulate the wires 13 from each other.

In one embodiment, the metal foil wires 18 are quadrilateral in cross-section. Specifically, by designing the cross section of the metal foil wire 18 to be a quadrangle, it has a better bending resistance than the metal foil wire 18 having a circular cross section or the like. In the embodiment shown in fig. 2 in particular, the cross-section of the foil wires 18 is rectangular, which has a better bending resistance. The cross section of the metal foil wire 18 is not limited to a rectangle, and may be, for example, a square, a trapezoid, or a parallelogram.

In one embodiment, as shown in fig. 3, the metal foil wire 18 includes a tin-copper alloy wire 181 and a silver metal layer 182 coated on the tin-copper alloy wire 181. Specifically, by providing the metal foil wire 18 to be wrapped with the silver metal layer 182 and the tin-copper alloy wire 181, on the one hand, the bending resistance of the metal foil wire 18 can be improved, and the presence of the silver metal layer 182 also enables the metal foil wire 18 to have good electrical conductivity, thus improving the overall electrical conductivity of the cable 10.

In one embodiment, the second insulating layer 19 is a perfluoroalkoxy resin layer or a perfluoroethylene propylene copolymer layer. Specifically, by designing the second insulating layer 19 as a perfluoroalkoxy resin layer or a perfluoroethylene propylene copolymer layer, the insulating property and the waterproof sealing property of the second insulating layer 19 are effectively ensured, and since the second insulating layer 19 does not directly contact the human body internal environment, it is not necessary to consider the biocompatibility thereof with the human body internal environment, so that the manufacturing cost of the cable 10 can be effectively reduced by using the perfluoroalkoxy resin layer or the perfluoroethylene propylene copolymer layer.

In one embodiment, as shown in fig. 4, the first ballistic wire 12 is stranded from a plurality of ballistic wires. Specifically, the first bulletproof wire 12 is formed by twisting a plurality of strands of bulletproof wires 121, so that the first bulletproof wire 12 has better tensile resistance and bending resistance, and the overall mechanical performance of the cable 10 is also remarkably improved, and the quality reliability of the cable 10 is also improved. It should be noted that the first ballistic resistant wire 12 can also be one or more non-stranded ballistic resistant wires 121.

In one embodiment, the second ballistic wire 17 is similar in structure to the first ballistic wire 12, and the second ballistic wire 17 is also twisted from multiple ballistic wires. Specifically, by twisting the second bulletproof wire 17 with a plurality of bulletproof wires, the second bulletproof wire 17 has better tensile resistance and bending resistance, and the overall mechanical performance and quality reliability of the cable 10 are further improved. It should be noted that the second ballistic filament 17 can also be one or more non-twisted ballistic filaments.

In one embodiment, the ballistic resistant filaments are poly (paraphenylene terephthalamide) filaments. In particular, thanks to the preferred tensile strength, initial modulus of elasticity and specific strength 5 times that of steel, the poly (p-phenylene terephthalamide) fibers also ensure the tensile strength and bending resistance of the first and second bulletproof wires 12 and 17 formed by twisting the bulletproof wires, thereby further improving the overall bending resistance of the cable 10.

In one embodiment, the first insulating layer 15 is a silicone rubber layer or a thermoplastic polyurethane elastomer rubber layer. In particular, when the cable 10 is used for percutaneous or implantation, the first insulating layer 15 is preferably a silicone layer, and the silicone layer is preferably medical implant grade silicone to ensure biocompatibility of the cable 10 in the human body's environment. When the use environment of the cable 10 is not very harsh, the thermoplastic polyurethane elastomer rubber layer can be used as the first insulating layer 15, so as to reduce the overall manufacturing material cost of the cable 10.

In one embodiment, as shown in fig. 1, the bulletproof filament braid 14 comprises a net structure woven by a plurality of poly-paraphenylene terephthalamide fiber filaments. Specifically, the polyparaphenylene terephthalamide fiber filaments are woven to form a net structure, so that the surface mechanical property of the cable 10 tends to be isotropic due to the net structure, and the cable 10 can be better adapted to the use environment which needs to be frequently bent during the internal activities of a human body or an animal body.

The embodiment of the application provides a ventricular assist device, which comprises a percutaneous cable, wherein the percutaneous cable is the cable 10. In one embodiment, the ventricular assist device further comprises a blood pump and an external controller, and the two ends of the percutaneous cable are respectively electrically connected with the blood pump and the external controller. In particular, the blood pump is an implantable blood pump.

The ventricular assist device provided by the embodiment of the application comprises the cable 10, and the cable 10 can be bent for 60 ten thousand times without disconnection under the harsh test conditions that the hanging weight is 500g, the bending angle is +/-45 degrees, the bending radius reaches 1.5 times of the diameter, and the swinging frequency reaches 2Hz (120 times/min), so that the ventricular assist device has better bending resistance and is beneficial to prolonging the service life of the ventricular assist device.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims (10)

1. A cable, characterized by: the wire winding device comprises a first bulletproof wire, a bulletproof wire weaving layer, a first insulating layer and a plurality of wires, wherein the wires are spirally wound on the first bulletproof wire along the extending direction of the first bulletproof wire to form a first wire core, the bulletproof wire weaving layer is coated on the first wire core, and the first insulating layer is coated on the bulletproof wire weaving layer.

2. The cable according to claim 1, characterized in that: each wire comprises a second bulletproof wire, a second insulating layer and a metal foil wire, the metal foil wire is spirally wound on the second bulletproof wire along the extending direction of the second bulletproof wire so as to form a second wire core, and the second insulating layer is wrapped on the second wire core.

3. The cable according to claim 2, characterized in that: the cross section of the metal foil wire is quadrilateral.

4. The cable according to claim 2, characterized in that: the metal foil wire comprises a tin-copper alloy wire and a silver metal layer coated on the tin-copper alloy wire.

5. The cable according to claim 2, characterized in that: the second insulating layer is a perfluoroalkoxy resin layer or a perfluoroethylene propylene copolymer layer.

6. A cable according to any one of claims 2 to 5, wherein: the first bulletproof wire is formed by twisting a plurality of bulletproof wires, and/or the second bulletproof wire is formed by twisting a plurality of bulletproof wires.

7. The cable of claim 6, wherein: the bulletproof silk is poly-p-phenylene terephthamide fiber silk.

8. The cable according to claim 1, characterized in that: the first insulating layer is a silica gel layer or a thermoplastic polyurethane elastomer rubber layer.

9. A cable according to any one of claims 1 to 5 or 8, wherein: the bulletproof wire braided layer comprises a net structure formed by braiding a plurality of poly-p-phenylene terephthamide fiber wires.

10. A ventricular assist device, characterized by: comprising a percutaneous cable as claimed in any one of claims 1 to 9.

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