CN118576864A - Catheter reinforcement - Google Patents

Abstract

The application relates to a catheter reinforcement, which comprises a reinforcement pipe body, wherein the reinforcement pipe body is of a cylindrical structure, at least one side hole is formed in the peripheral surface of the reinforcement pipe body, a plurality of first hollowed-out grooves are formed in the peripheral surface of the reinforcement pipe body at intervals, and partition ribs are arranged between any adjacent first hollowed-out grooves or between any adjacent first hollowed-out grooves and the side holes and used for partitioning the adjacent first hollowed-out grooves or the adjacent first hollowed-out grooves and the side holes. Above-mentioned scheme first fretwork groove intercommunication strengthens the inside and outside of body, can make the inside and outside glue film of pipe alternate through first fretwork groove and fuse together, promote the firmness of pipe reinforcement in the pipe, prevent that the pipe reinforcement from peeling off the pipe, can promote the axial bending flexibility of pipe reinforcement for the pipe is more smooth and easy when getting into the blood vessel of tortuosity, and the partition rib that lies in between the adjacent first fretwork groove can provide radial support simultaneously, prevents that side opening position from discounting and inhaling flat deformation, very big reduction the position discounting that the hole of pipe corresponds and the risk of slumping.

Description

Catheter reinforcement

Technical Field

The present application relates to the technical field of medical devices, and in particular to a catheter reinforcement.

Background Art

In extracorporeal circulation cardiovascular surgery and other surgeries, femoral artery cannulation and venous cannulation have been widely used for auxiliary drainage. At present, femoral artery cannulation and venous cannulation will open one or more holes on the side wall of the cannula body according to the needs of different types of surgeries, and in order to enhance the strength of the cannula body, spirally wound reinforcing ribs will be set in the cannula body. At least one or more coils of the reinforcing ribs corresponding to the positions where the holes are set in the cannula body are disconnected, resulting in the destruction of the overall connectivity of the reinforcing ribs.

In the prior art, in order to ensure the strength of the side hole of the tube body, the following solutions are adopted: 1. A slender coil is set at the side hole to prevent the coil at the side hole corresponding to the opening of the reinforcing rib from being disconnected; 2. A ring is set at the side hole to connect the ends of the disconnected coil; however, the above two methods cannot effectively improve the strength of the side hole. 3. An additional layer is set at the side hole position, and a groove is set on the outside of the additional layer so that the slender coil can pass through the transition part through the groove, but the flexibility of the transition part of the tube body will be greatly reduced, and it cannot be bent as flexibly as the parts other than the transition part.

Summary of the invention

Based on this, it is necessary to provide a catheter reinforcement member, aiming to solve the problem that the strength and flexibility of the catheter reinforcement member in the prior art cannot be taken into account at the same time.

The present application provides a catheter reinforcement, including a reinforcement tube body, which is a cylindrical structure. The circumference of the reinforcement tube body is provided with at least one side hole, and the circumference of the reinforcement tube body is also provided with a plurality of first hollow grooves at intervals. Partition ribs are provided between any adjacent first hollow grooves or between any adjacent first hollow grooves and the side holes for separating adjacent first hollow grooves or adjacent first hollow grooves and the side holes.

The catheter reinforcement provided in the above scheme provides radial support for the catheter by setting a reinforced tube body with a cylindrical structure, and also sets a plurality of first hollow grooves at intervals on the circumferential surface of the reinforced tube body, so that the first hollow grooves connect the inside and outside of the reinforced tube body, and the inner and outer rubber layers of the catheter can be interlaced and fused together through the first hollow grooves, thereby improving the firmness of the catheter reinforcement in the catheter and preventing the catheter reinforcement from being peeled off the catheter. The first hollow groove makes the circumferential surface of the reinforced tube body present a hollow structure, which can improve the axial bending flexibility of the catheter reinforcement, so that the catheter can enter the tortuous blood vessel more smoothly. At the same time, the partition ribs located between adjacent first hollow grooves can provide radial support to prevent the side hole position from being folded and deformed by suction, thereby greatly reducing the risk of folding and collapse of the position corresponding to the hole of the catheter.

In one embodiment, one end of the reinforced tube body is connected to a head reinforcement section, and a plurality of second hollow grooves are arranged at intervals on the circumference of the head reinforcement section, and reinforcing ribs are arranged between adjacent second hollow grooves, and the ratio of the reinforcing ribs to the circumferential area of the head reinforcement section is greater than the ratio of the partition ribs to the circumferential area of the reinforcing tube body.

In one embodiment, the head reinforcement section is a cylindrical structure, and the cross-sectional diameter of the head reinforcement section gradually decreases from one end connected to the reinforcement tube body to one end away from the reinforcement tube body.

In one embodiment, the partition rib or the reinforcing rib is provided between the second hollow groove and the first hollow groove, and between the second hollow groove and the side hole.

In one embodiment, a plurality of the second hollow grooves are distributed in a circumferential array along the circumference of the head reinforcement section.

In one embodiment, the second hollow groove is one or more polygonal grooves.

In one embodiment, the second hollow groove is a diamond-shaped structure, a plurality of the second hollow grooves are evenly spaced along the circumference of the head reinforcement section, and adjacent second hollow grooves along the axial direction of the head reinforcement section are staggered.

In one embodiment, the second hollow grooves include at least two groups of the first hollow grooves with different shapes, wherein the distribution length of one group of the first hollow grooves in the axial direction of the head reinforcement section is smaller than the distribution length of another group of the first hollow grooves in the axial direction of the head reinforcement section.

In one embodiment, the at least two groups of the first hollow grooves with different shapes include quadrilateral first hollow grooves and triangular first hollow grooves, and the distribution length of the quadrilateral first hollow grooves in the axial direction of the head reinforcement section is smaller than the distribution length of the triangular first hollow grooves in the axial direction of the head reinforcement section.

In one embodiment, the cross-section of the end of the head reinforcement section is a closed or semi-closed circle, ellipse or polygon.

In one embodiment, the first hollow groove and the second hollow groove have the same shape but different sizes.

In one of the embodiments, an annular reinforcement band is provided on the circumference of the side hole, and the first hollow groove is not provided in the annular reinforcement band.

In one embodiment, the plurality of first hollow grooves are spirally distributed along a plurality of spiral lines disposed on the circumference of the reinforcement tube body.

In one embodiment, the first hollow groove is a polygonal groove or a circular groove.

The present application also provides a catheter, which is a hollow tubular structure, comprising a side wall and a catheter reinforcement member as described in any of the above embodiments, wherein the catheter reinforcement member is coaxially arranged with the side wall.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings constituting a part of this application are used to provide further understanding of this application. The schematic implementation modes and descriptions of this application are used to explain this application and do not constitute improper limitations on this application.

In order to more clearly illustrate the technical solutions in the implementation modes of the present application, the drawings required for use in the description of the implementation modes will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

FIG1 is a diagram showing a catheter reinforcement member in use according to any embodiment of the present application;

FIG2 is a catheter reinforcement member shown in the first embodiment of the present application, wherein (a) is a right side view of the catheter reinforcement member shown in the first embodiment of the present application; (b) is a rear view of the catheter reinforcement member shown in the first embodiment of the present application; (c) is a stereoscopic view of the catheter reinforcement member shown in the first embodiment of the present application;

FIG3 is a catheter reinforcement member shown in Embodiment 2 of the present application, wherein (a) is a right side view of the catheter reinforcement member shown in Embodiment 2 of the present application; (b) is a rear view of the catheter reinforcement member shown in Embodiment 2 of the present application; (c) is a stereoscopic view of the catheter reinforcement member shown in Embodiment 2 of the present application;

Figure 4 is a catheter reinforcement member shown in embodiment 3 of the present application, wherein (a) is a right view of the catheter reinforcement member shown in embodiment 3 of the present application; (b) is a rear view of the catheter reinforcement member shown in embodiment 3 of the present application; and (c) is a stereoscopic view of the catheter reinforcement member shown in embodiment 3 of the present application.

Description of reference numerals:

100, catheter reinforcement; 110, reinforcement tube body; 111, side hole; 112, first hollow groove; 113, partition rib; 114, annular reinforcement belt; 120, head reinforcement section; 121, second hollow groove; 122, reinforcement rib;

200. Catheter.

DETAILED DESCRIPTION

In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific implementation methods disclosed below.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific implementation methods and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the term "and/or" is only a description of the association relationship of associated objects, indicating that there may be three relationships. For example, A and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character "/" in this article generally indicates that the associated objects before and after are in an "or" relationship.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

The preferred implementation of the present application is described below in conjunction with the accompanying drawings.

As shown in FIGS. 2 to 4 , the catheter reinforcement member 100 shown in the present application can be applied to the medical catheter 200 shown in FIG. 1 , especially the implanted catheter such as the femoral artery cannula and the venous cannula, and is coaxially arranged with the medical catheter 200 to improve the strength of the medical catheter 200. In the present application, the catheter reinforcement member 100 is embedded between the inner wall and the outer wall of the catheter 200, but it is not used as a limitation on the scope of application of the catheter reinforcement member 100.

As shown in FIG2 , a catheter reinforcement member 100 is shown in the first embodiment of the present application, including a reinforcement tube body 110. The reinforcement tube body 110 is a cylindrical structure, and at least one side hole 111 is provided on the circumference of the reinforcement tube body 110. The position and size of the side hole 111 correspond to the position and size of the hole on the catheter 200. The reinforcement tube body 110 provides radial support for the catheter 200 to prevent the position corresponding to the hole of the catheter 200 from being folded and deformed by suction.

The circumference of the reinforced tube body 110 is also provided with a plurality of first hollow grooves 112 at intervals. The first hollow grooves 112 connect the inside and outside of the reinforced tube body 110, providing a space for the catheter colloid (molding material) to be inserted, which can make the inner and outer rubber layers (inner wall and outer wall) of the catheter 200 be inserted and fused together through the first hollow grooves 112, thereby improving the firmness of the catheter reinforcement member 100 in the catheter 200 and preventing the catheter reinforcement member 100 from being peeled off from the catheter 200. Moreover, the first hollow grooves 112 make the circumference of the reinforced tube body 110 present a hollow structure, which can improve the axial bending flexibility of the catheter reinforcement member 100, so that the catheter 200 can enter the tortuous blood vessel more smoothly.

Any first hollow groove 112 is not connected to the side hole 111. Partition ribs 113 are provided between adjacent first hollow grooves 112 or between the first hollow grooves 112 and the side hole 111. The partition ribs 113 provide radial support to prevent the side hole 111 from being bent and deformed by suction, thereby greatly reducing the risk of bending and collapse at the position corresponding to the hole of the catheter 200.

It can be understood that both ends of the reinforcing tube body 110 are provided with partition ribs 113 arranged along the circumference to prevent the first hollow groove 112 from becoming an open groove and protruding from the catheter 200 when the reinforcing tube body 110 is bent, causing the reinforcing tube body 110 to scratch the blood vessel, thereby affecting the implantation of the catheter 200 into the human body, making it smoother for the catheter 200 to enter the tortuous blood vessel.

As shown in Figure 2, according to some embodiments of the present application, optionally, an annular reinforcement band 114 is provided on the circumference of the side hole 111, and the first hollow groove 112 is not provided in the annular reinforcement band 114. Preferably, the width of the annular reinforcement band 114 is consistent with the width of the partition rib 113, so that the strength of the reinforced tube body 110 is evenly distributed.

As shown in FIG. 2 , according to some embodiments of the present application, optionally, a plurality of first hollow grooves 112 are spirally distributed along a plurality of spiral lines disposed on the circumference of the reinforcing tube body 110. In this embodiment, the first hollow grooves 112 adopt a quadrilateral structure (specifically a diamond or square structure), and the plurality of first hollow grooves 112 are spirally distributed along 8 spiral lines disposed on the circumference of the reinforcing tube body 110. In actual production and use, the number of spiral lines can be set according to the size of the first hollow grooves 112.

As shown in FIG. 2 , according to some embodiments of the present application, optionally, one end of the reinforcing tube body 110 is connected to a head reinforcing section 120, and a plurality of second hollow grooves 121 are arranged at intervals on the circumference of the head reinforcing section 120. Optionally, the second hollow grooves 121 and the first hollow grooves 112 have the same shape but different sizes, and the second hollow grooves 121 are smaller than the first hollow grooves 112. Reinforcing ribs 122 are arranged between adjacent second hollow grooves 121. It can be understood that the head reinforcing section 120 is provided with reinforcing ribs 122 arranged along the circumference at both ends of the axial direction to prevent the second hollow grooves 121 from becoming open grooves, thereby affecting the implantation of the catheter 200 into the human body. The ratio of the circumferential area of the reinforcing ribs 122 to the head reinforcing section 120 is greater than the ratio of the circumferential area of the partition ribs 113 to the reinforcing tube body 110, so as to improve the structural strength of the plug position and provide better insertion performance for the cannula.

According to some embodiments of the present application, optionally, the head reinforcement section 120 is a cylindrical structure, and the cross-sectional diameter of the head reinforcement section 120 gradually decreases from one end connected to the reinforcement tube body 110 to the end away from the reinforcement tube body 110, thereby improving the insertability and flexibility of the head reinforcement section 120, greatly improving the application value of the medical catheter 200 in clinical practice, and reducing clinical risks.

According to some embodiments of the present application, optionally, the cross-section of the end of the head reinforcement section 120 is a closed or semi-closed circle, ellipse or polygon, which can be selected according to the needs during the specific implementation process.

According to some embodiments of the present application, optionally, the second hollow groove 121 and the first hollow groove 112, and the second hollow groove 121 and the side hole 111 are not connected on the tube wall surface of the reinforced tube body 110, so as to avoid the second hollow groove 121 and the first hollow groove 112 being connected or the second hollow groove 121 and the side hole 111 being connected, which may cause the strength of the catheter reinforcement 100 to be reduced and uneven.

As shown in FIG. 2 , according to some embodiments of the present application, optionally, a plurality of second hollow grooves 121 are distributed in an array along the circumferential direction of the circumference of the head reinforcement section 120. In this embodiment, the second hollow grooves 121 have the same structure as the first hollow grooves 112, both of which are diamond-shaped structures, and the plurality of second hollow grooves 121 are distributed at equal intervals along the circumferential direction of the circumference of the head reinforcement section 120, and the second hollow grooves 121 adjacent to each other along the axial direction of the head reinforcement section 120 are distributed in a staggered manner.

As shown in Figure 3, a catheter reinforcement member 100 is shown in the second embodiment of the present application. The difference between the first embodiment and the first embodiment is that the first hollow groove 112 adopts a rectangular long groove structure, and the length direction of the rectangular long groove is the same as the circumferential direction, and the width direction is the same as the axial direction. Multiple first hollow grooves 112 are spirally distributed along four spiral lines arranged on the circumferential surface of the reinforced tube body 110. When used in actual production, the number of spiral lines can be set according to the length of the first hollow groove 112.

The second hollow groove 121 is a square groove, and the sides of the square groove are respectively the same as the circumferential direction and the axial direction. Multiple second hollow grooves 121 are distributed in a rectangular array along the circumference of the head reinforcement section 120, and there are 2 rows along the axial direction of the head reinforcement section 120, and adjacent second hollow grooves 121 are distributed in parallel.

As shown in FIG4 , a catheter reinforcement member 100 is shown in the third embodiment of the present application, which is different from the second embodiment in that the second hollow groove 121 includes two groups of first hollow grooves 121 of different shapes, wherein the distribution length of one group of first hollow grooves 121 in the axial direction of the head reinforcement section 120 is smaller than the distribution length of the other group of first hollow grooves 121 in the axial direction of the head reinforcement section 120. Specifically, the second hollow groove 121 includes a quadrilateral first hollow groove and a triangular first hollow groove, and the distribution length of the quadrilateral first hollow groove in the axial direction of the head reinforcement section 120 is smaller than the distribution length of the triangular first hollow groove in the axial direction of the head reinforcement section 120.

As shown in Fig. 4, a plurality of quadrilateral first hollow grooves are distributed in a rectangular array along the circumference of the head reinforcement section 120, and there are two rows along the axis direction of the head reinforcement section 120, and adjacent quadrilateral first hollow grooves are distributed in parallel. Among them, the triangular first hollow groove is located at the end of the head reinforcement section 120 away from the reinforcement tube body 110, and the bottom side of the triangular first hollow groove is located at the end of the head reinforcement section 120 away from the reinforcement tube body 110 and is parallel to the end surface.

The catheter reinforcement 100 provided in the above scheme provides radial support for the catheter 200 by setting a cylindrical reinforcement tube body 110, and also sets a plurality of first hollow grooves 112 at intervals on the circumference of the reinforcement tube body 110, so that the first hollow grooves 112 connect the inside and outside of the reinforcement tube body 110, and the inner and outer rubber layers of the catheter 200 can be interlaced and fused together through the first hollow grooves 112, thereby improving the firmness of the catheter reinforcement 100 in the catheter 200 and preventing the catheter reinforcement 100 from being peeled off from the catheter 200. The first hollow grooves 112 make the circumference of the reinforcement tube body 110 present a hollow structure, which can improve the axial bending flexibility of the catheter reinforcement 100, so that the catheter 200 can enter the tortuous blood vessel more smoothly. At the same time, the partition ribs 113 located between adjacent first hollow grooves 112 can provide radial support to prevent the side hole 111 from being folded and deformed by suction, thereby greatly reducing the risk of folding and collapse at the position corresponding to the hole of the catheter 200.

As shown in FIG1 , the present application also provides a catheter 200, which is a tubular structure, including an annular side wall, and a catheter reinforcement member 100 as in any of the above embodiments, the catheter reinforcement member 100 is coaxially arranged with the side wall, preferably, the side wall includes an inner and outer rubber layer, the catheter reinforcement member 100 is located between the inner rubber layer and the outer rubber layer, provides radial support to the catheter 200, prevents the position of the catheter 200 hole from being folded and deformed by suction, greatly reduces the risk of folding and collapse at the position corresponding to the hole of the catheter 200, thereby improving the strength of the catheter 200. Moreover, since the peripheral surface of the reinforcement tube body 110 of the catheter reinforcement member 100 is a hollow structure, the axial bending flexibility of the catheter reinforcement member 100 can be improved, so that the catheter 200 can enter the tortuous blood vessel more smoothly; in addition, the inner and outer rubber layers are interlaced and fused together through the first hollow groove 112 and the second hollow groove 121 on the catheter reinforcement member 100, so as to improve the firmness of the catheter reinforcement member 100 in the catheter 200 and prevent the catheter reinforcement member 100 from being peeled off from the catheter 200.

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 above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims (16)

1. A catheter reinforcement, characterized in that it comprises a reinforcement tube body, the reinforcement tube body is a cylindrical structure, the circumference of the reinforcement tube body is provided with at least one side hole, the circumference of the reinforcement tube body is also provided with a plurality of first hollow grooves at intervals, and a partition rib is provided between any adjacent first hollow grooves or between any adjacent first hollow grooves and the side hole for separating adjacent first hollow grooves or adjacent first hollow grooves and the side hole. 2 . The catheter reinforcement according to claim 1 , wherein the partition ribs are provided along the circumference at both ends of the reinforcement tube body in the axial direction. 3. The catheter reinforcement according to claim 1 is characterized in that one end of the reinforced tube body is connected to a head reinforcement section, a plurality of second hollow grooves are arranged at intervals on the circumference of the head reinforcement section, reinforcing ribs are arranged between adjacent second hollow grooves, and a ratio of the reinforcing ribs to the circumferential area of the head reinforcement section is greater than a ratio of the partition ribs to the circumferential area of the reinforced tube body. 4 . The catheter reinforcement according to claim 3 , wherein the head reinforcement section is a cylindrical structure, and a cross-sectional diameter of the head reinforcement section gradually decreases from an end connected to the reinforcement tube body to an end away from the reinforcement tube body. 5 . The catheter reinforcement member according to claim 3 , wherein the partition rib or the reinforcement rib is provided between the second hollow groove and the first hollow groove, and between the second hollow groove and the side hole. 6 . The catheter reinforcement according to claim 3 , wherein a plurality of the second hollow grooves are distributed in a circumferential array along the circumference of the head reinforcement section. 7 . The catheter reinforcement according to claim 3 , wherein the second hollow groove is one or more polygonal grooves. 8. The catheter reinforcement according to claim 7 is characterized in that the second hollow groove is a diamond structure, a plurality of the second hollow grooves are evenly spaced along the circumference of the head reinforcement section, and adjacent second hollow grooves along the axial direction of the head reinforcement section are staggered. 9. The catheter reinforcement according to claim 7 is characterized in that the second hollow grooves include at least two groups of the first hollow grooves with different shapes, wherein the distribution length of one group of the first hollow grooves in the axial direction of the head reinforcement section is smaller than the distribution length of another group of the first hollow grooves in the axial direction of the head reinforcement section. 10. The catheter reinforcement according to claim 9 is characterized in that the at least two groups of the first hollow grooves with different shapes include quadrilateral first hollow grooves and triangular first hollow grooves, and the distribution length of the quadrilateral first hollow grooves in the axial direction of the head reinforcement section is smaller than the distribution length of the triangular first hollow grooves in the axial direction of the head reinforcement section. 11 . The catheter reinforcement according to claim 3 , wherein the cross-section of the end of the head reinforcement section is a closed or semi-closed circle, ellipse or polygon. 12 . The catheter reinforcement member according to claim 3 , wherein the first hollow groove and the second hollow groove have the same shape but different sizes. 13 . The catheter reinforcement according to claim 1 , wherein an annular reinforcement band is provided on the circumference of the side hole, and the first hollow groove is not provided in the annular reinforcement band. 14 . The catheter reinforcement member according to claim 1 , wherein the plurality of first hollow grooves are spirally distributed along a plurality of spiral lines disposed on a circumferential surface of the reinforcement tube body. 15 . The catheter reinforcement according to claim 1 , wherein the first hollow groove is a polygonal groove or a circular groove. 16. A catheter, characterized in that it is a hollow tubular structure, comprising a side wall and a catheter reinforcement member according to any one of claims 1 to 15, wherein the catheter reinforcement member is coaxially arranged with the side wall.