Reinforced composite sheath tubeTechnical Field
The invention relates to the field of reinforced composite sheath pipes, in particular to a reinforced composite sheath pipe.
Background
Minimally invasive interventional procedures are currently a surgical treatment performed under image guidance, in which medical device implants or drugs are delivered to the lesion site with minimal trauma by a delivery system to perform physical, mechanical or chemical treatment. Among them, the sheath, as an important component of the delivery system, has been widely used for minimally invasive interventional procedures.
For minimally invasive interventional procedures of vascular types, the operating physician typically makes an anatomic incision in a small blood vessel (e.g., at the femoral artery) or performs a puncture to form an access, and then delivers the medical device implant, such as a stent graft, to the targeted lesion site, such as coronary artery, aortic valve, thoracic aorta, abdominal aorta, intracranial artery, carotid artery, etc., via a delivery system through the access and small blood vessel, etc. The sheath must provide a sufficiently high radial strength so that the medical device implant, such as a stent graft, can be loaded within the sheath, and also a sufficiently high axial strength so that the medical device implant, such as a stent graft, can be released from within the sheath, thereby allowing for safe implantation of the medical device implant. The axial and radial strength of the existing sheath tube is low.
Disclosure of Invention
Aiming at the problems, the invention provides a reinforced composite sheath tube, which solves the defect that the axial and radial strength of the existing sheath tube is low.
The technical scheme adopted by the invention is as follows:
a reinforced composite sheath, comprising: the pipe body, the lateral wall of pipe body is embedded to have the strengthening rib that double helix winding was arranged, the strengthening rib includes the strengthening pipe, the center is equipped with the heater in the strengthening pipe, the heater outside is equipped with the flexible membrane, the hot melt adhesive is filled with to flexible membrane and heater. According to the invention, the reinforcing ribs which are arranged in a double spiral winding way are embedded on the side wall of the tube body, so that the axial and radial strength of the sheath tube is greatly enhanced, the hot melt adhesive filled between the flexible film and the heating wire is heated through the heating wire, when the tube enters a blood vessel, the heating wire heats and enables the hot melt adhesive to be melted and liquefied, so that the reinforcing tube is more flexible, the tube is convenient to enter the blood vessel, and when the structural strength of the sheath tube needs to be enhanced after entering the blood vessel, the heating wire does not heat at the moment, the hot melt is gelled to fix, so that the strength of the sheath tube is higher, and the structural strength of the reinforcing rib of the reinforcing tube can be adjusted according to requirements.
Optionally, a heat conducting medium is arranged between the flexible film and the side wall of the reinforced pipe.
Optionally, the heat conducting medium is a liquid.
Optionally, the external connecting rod of heater, the connecting rod end is equipped with curved heat conduction and strengthens the arc.
Optionally, the number of the connecting rods is four, and the connecting rods are uniformly distributed on the heating wires.
Optionally, the connecting rod and the heat conduction reinforcing arc plate are made of flexible materials.
Optionally, the flexible film is coated on the outer side of the heat conduction reinforced arc plate. According to the heat exchange tube, the heat exchange efficiency is improved through the connecting rod and the heat conduction reinforcing arc plate, and the connecting rod and the heat conduction reinforcing arc plate play a role of a framework, so that the reinforcing tube is more flexible, the bending resistance of the reinforcing tube is enhanced, and breakage is avoided.
Optionally, be equipped with a plurality of annular cavitys in the lateral wall of body, the both sides of the enhancement pipe of duplex screw are connected simultaneously to annular cavity, be equipped with opening intercommunication cavity on the enhancement pipe. The cavity is arranged, so that the winding and bending heating wires can perform heat exchange, the temperature of the heating wires is more balanced, and the structural strength of the reinforcing rib of the reinforced composite sheath tube is more rapidly adjusted.
Optionally, the tail end of the heating wire is connected with an external power supply.
Optionally, the pipe body is made of a high polymer material.
Advantageous effects
1. According to the invention, the reinforcing ribs which are arranged in a double spiral winding way are embedded on the side wall of the tube body, so that the axial and radial strength of the sheath tube is greatly enhanced, the hot melt adhesive filled between the flexible film and the heating wire is heated through the heating wire, when the tube enters a blood vessel, the heating wire heats and enables the hot melt adhesive to be melted and liquefied, so that the reinforcing tube is more flexible, the tube is convenient to enter the blood vessel, and when the structural strength of the sheath tube needs to be enhanced after entering the blood vessel, the heating wire does not heat at the moment, the hot melt is gelled to fix, so that the strength of the sheath tube is higher, and the structural strength of the reinforcing rib of the reinforcing tube can be adjusted according to requirements.
2. The cavity is arranged, so that the winding and bending heating wires can perform heat exchange, the temperature of the heating wires is more balanced, and the structural strength of the reinforcing rib of the reinforced composite sheath tube is more rapidly adjusted.
3. According to the heat exchange tube, the heat exchange efficiency is improved through the connecting rod and the heat conduction reinforcing arc plate, and the connecting rod and the heat conduction reinforcing arc plate play a role of a framework, so that the reinforcing tube is more flexible, the bending resistance of the reinforcing tube is enhanced, and breakage is avoided.
Drawings
FIG. 1 is a front partial construction view of a reinforced composite sheath of embodiment 1 of the present invention;
FIG. 2 is a cross-sectional view of the reinforced composite sheath of example 1 of the present invention;
fig. 3 is a sectional view showing the structure of a reinforcing rib for reinforcing a composite sheath according to example 1 of the present invention.
The reference numerals in the drawings are as follows:
1. the pipe body, 2, the strengthening rib, 3, the strengthening tube, 4, the heater, 5, flexible membrane, 6, the connecting rod, 7, heat conduction enhancement arc, 8, cavity, 9, opening.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1 the technical scheme adopted by the invention is as follows:
as shown in fig. 1, 2 and 3, a reinforced composite sheath, comprising: the pipe body 1, the lateral wall of pipe body is embedded to have the strengthening rib 2 that double helix winding was arranged, the strengthening rib includes strengthening tube 3, the center is equipped with heater 4 in the strengthening tube, the heater outside is equipped with flexible membrane 5, flexible membrane and heater fill hot melt adhesive. And a heat conducting medium is arranged between the flexible film and the side wall of the reinforcing pipe. The heat conducting medium is liquid. The heating wire is externally connected with a connecting rod 6, and the tail end of the connecting rod is provided with an arc-shaped heat conduction reinforcing arc-shaped plate 7.
The number of the connecting rods is four, and the connecting rods are uniformly distributed on the heating wires. The connecting rod and the heat conduction reinforcing arc plate are made of flexible materials. The heating wire of the embodiment can actively heat, can be externally connected with an external heat source, and has a heat conduction effect.
The flexible film is coated on the outer side of the heat conduction reinforced arc-shaped plate.
A plurality of annular cavities 8 are arranged in the side wall of the pipe body, the annular cavities are simultaneously connected with two sides of the double-spiral reinforcing pipe, and an opening 9 is arranged on the reinforcing pipe and communicated with the cavities.
The tail end of the heating wire is connected with an external power supply.
The pipe body is made of high polymer materials. The heating wire can adopt an electrified heating wire, and the heating wire is formed by winding a single wire body on the inner side wall of the sheath tube in a double-spiral manner to form a crossed spiral structure and returns to the same end part at the same time.
When this embodiment is implemented, when getting into the blood vessel, can make hot melt adhesive melt liquefaction when the heater generates heat for the stiffening tube is more flexible, in order to conveniently get into the blood vessel, needs to strengthen sheath structural strength after getting into the blood vessel and is, can make hot melt gel admittedly when the heater does not generate heat this moment, makes the intensity of sheath higher, makes the structural strength of stiffening rib of stiffening tube can adjust as required.
Example 2
The invention also discloses an enhanced composite sheath tube, which comprises: the pipe body, the lateral wall of pipe body is embedded to have the strengthening rib that double helix winding was arranged, the strengthening rib includes the strengthening pipe, the center is equipped with the heater in the strengthening pipe, the heater outside is equipped with the flexible membrane, the hot melt adhesive is filled with to flexible membrane and heater.
When this embodiment is implemented, when getting into the blood vessel, can make hot melt adhesive melt liquefaction when the heater generates heat for the stiffening tube is more flexible, in order to conveniently get into the blood vessel, needs to strengthen sheath structural strength after getting into the blood vessel and is, can make hot melt gel admittedly when the heater does not generate heat this moment, makes the intensity of sheath higher, makes the structural strength of stiffening rib of stiffening tube can adjust as required.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover all equivalent structures as modifications within the scope of the invention, either directly or indirectly, as may be contemplated by the present invention.