Hypotube

Abstract

The utility model relates to a hypotube which comprises a hypotube body, the hypotube body is of a hollow tubular structure and has a preset length, torsion grooves are formed in the side wall of the hypotube body in a sunken mode, the torsion grooves are formed in the circumferential direction of the hypotube body and are of a closed-loop annular structure, the number of the torsion grooves is multiple, and the torsion grooves are formed in the axial direction of the hypotube body; the positions of the closed rings of any adjacent torsion grooves do not correspond, the positions of the closed rings of any spaced torsion grooves correspond, the torsion grooves are spiral in the axial direction of the wave tube, the softness and flexibility of the cylindrical tube body are regulated and controlled by adjusting the cutting texture of the torsion grooves, and therefore the bending fracture resistance of the wave tube is improved. Specifically, due to the arrangement of the torsion groove, the application value of the hypotube body in the medical interventional operation is greatly improved, and it is ensured that the best controllability, flexibility and stability can be kept when the guide wire penetrates through zigzag and changeable blood vessels or narrow and small spaces.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a hypotube. BACKGROUND

[0002] Due to the small size and numerous bending sections of intracranial blood vessels, the ability to quickly pass through the bending sections of the blood vessels to reach the lesion site becomes a standard for measuring the advantages and disadvantages of the guide wire. Intracranial vascular diseases are increasingly common due to factors such as age and genetics. For example, in the case of aneurysm, an intracranial aneurysm will compress the nerve tissue in the early stage of unrupture, and aneurysms at different locations will cause corresponding pathological symptoms. For example, compression of the optic nerve will cause a dark shadow in the visual field, and in severe cases, blindness. Subarachnoid hemorrhage caused by aneurysm rupture will cause a stroke. Current intracranial aneurysm treatment methods are divided into surgical clipping and interventional therapy. Considering the slow healing of elderly patients after craniotomy, interventional therapy is often used. Interventional therapy devices are divided into auxiliary stent-assisted coil embolization, flow diversion device therapy, and braided embolization. The guide wire is used to deliver such devices to the lesion site to achieve the purpose of treatment.

[0003] The current mainstream guide wire structure is an alloy core wire plus a coiled spring structure. The coiled spring structure guide wire has the defect that the near-end torque cannot be transmitted to the far end in a proportional manner in clinical use, thereby failing to flexibly control the guide wire. The hypotube structure guide wire has excellent torque transmission capability and can quickly super-select to the lesion site under complex vascular conditions. The pipe material of the present application is the outer layer structure necessary for the hypotube guide wire. In the application process of the original cutting structure, it is found that the hypotube as a whole will break under the condition of extreme bending stress. The starting point of the breakage is always a crack at the root of the groove, and the crack expands to break as the bending degree increases. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the present application provides a hypotube with stronger bending fracture resistance.

[0005] According to an aspect of the present application, a hypotube is provided, comprising: a hypotube body;

[0006] The hypotube body is a hollow tubular structure with a predetermined length, and a torsion groove is recessed on the side wall of the hypotube body. The torsion groove is a closed loop annular structure and is arranged along the circumference of the hypotube body.

[0007] The torsion groove is a plurality of grooves arranged along the axial direction of the hypotube body, and the closed loop positions of any adjacent torsion grooves do not correspond. The closed loop positions of any interval torsion grooves correspond, and the axial direction of the hypotube is in a spiral shape.

[0008] In a possible implementation, the interval distances of any adjacent torsion grooves are different.

[0009] In a possible implementation, the length direction of the cross section of the torsion groove is perpendicular to the axial direction of the hypotube body.

[0010] In a possible implementation, a stress groove is formed on the side wall of the hypotube body.

[0011] At least one of the stress grooves is located at one end of the length direction of the torsion groove.

[0012] In a possible implementation, the cross section of the stress groove is circular, elliptical or keyhole-shaped.

[0013] In a possible implementation, the diameter of the cross section of the stress groove is greater than the opening width of the torsion groove.

[0014] In a possible implementation, a plurality of stress grooves are alternately arranged along the axial direction of the hypotube, and the number of the stress grooves is two or more.

[0015] In a possible implementation, the cross section of the torsion groove along the axial direction of the hypotube body is annular with an opening.

[0016] In a possible implementation, the interval angle between two adjacent stress grooves along the axial direction of the hypotube body is 90 degrees.

[0017] The interval angle between two adjacent stress grooves along the axial direction of the hypotube body is in the range of 5 degrees to 20 degrees.

[0018] The hypotube of the embodiment has the following advantages: the hypotube body is a tubular structure used in medical treatment, and a plurality of torsion grooves are arranged on the side wall along the axial direction. The softness and flexibility of the cylindrical tube body are adjusted by adjusting the cutting texture, so that the bending fracture resistance of the hypotube is improved. Specifically, the opening of the torsion groove greatly improves the application value of the hypotube body in medical intervention surgery, so that the guide wire can maintain the best controllability, flexibility and stability when passing through the tortuous and variable blood vessels or narrow space.

[0019] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and serve to explain the principles of the present application.

[0021] Figure 1 A schematic view of the body structure of the hypotube of the embodiment of the present application is shown.

[0022] Figure 2 A front view schematic diagram of a main body structure of a hypotube according to an embodiment of the present application is shown;

[0023] Figure 3 A combined twist groove and stress groove equiaxial side view schematic diagram of a hypotube according to an embodiment of the present application is shown;

[0024] Figure 4 A combined twist groove and stress groove equiaxial front view schematic diagram of a hypotube according to an embodiment of the present application is shown;

[0025] Figure 5 A partial enlarged schematic diagram of a main body structure of a hypotube according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0026] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numbers in the drawings indicate elements or components with the same or similar functionality. Although various aspects of embodiments are illustrated in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0027] It should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application or simplifying 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 cannot be understood as limiting the present application.

[0028] In addition, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implying a specific number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0029] The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations.

[0030] In addition, for a better illustration of the present application, numerous specific details are set forth in the following detailed description. Those skilled in the art will understand, however, that the present application can be practiced without certain specific details, and that the present application can be practiced with certain other methods, techniques, elements, and circuits.

[0031] As shown in Figures 1-5 The hypotube of the present application comprises a hypotube body 100, which is a hollow tubular structure with a preset length, and a torsion groove 110 is formed on the side wall of the hypotube body 100. The torsion groove 110 is a plurality of grooves arranged along the axial direction of the hypotube body 100.

[0032] In the present embodiment, the hypotube body 100 is a tubular structure for medical use, and a plurality of torsion grooves 110 are arranged on the side wall in the axial direction. The softness of the cylindrical tube body is adjusted by adjusting the cutting texture, thereby improving the bending fracture resistance of the hypotube. Specifically, the formation of the torsion groove 110 greatly improves the application value of the hypotube body 100 in medical intervention surgery, and ensures that the guide wire can maintain the best controllability, flexibility and stability when passing through the tortuous and variable blood vessels or narrow space.

[0033] In a specific embodiment, the spacing distance of any adjacent torsion groove is different, and the differentiated spacing further improves the performance of the hypotube. By adjusting the spacing distance, the softness and bending resistance of the hypotube can be finely adjusted to meet the needs of different surgical scenarios.

[0034] In a specific embodiment, the opening direction of the torsion groove 110 is a long strip shape, which can improve the flexibility and stability of the hypotube body 100 in the axial direction, so that the doctor can flexibly control the bending of the distal end of the guide wire during the operation.

[0035] In the present embodiment, the length direction of the cross section of the torsion groove 110 is perpendicular to the axial direction of the hypotube body 100. The torsion groove 110 is formed around the circumference of the hypotube body 100, so that the cross section of the torsion groove 110 is perpendicular to the axial direction of the hypotube body 100. When the hypotube is bent, it can be bent by the formation of the torsion groove 110, and the stability can be improved by the direction of the torsion groove 110 being perpendicular to the axial direction of the hypotube body 100, which is convenient for control.

[0036] In a specific embodiment, the stress groove 120 is formed on the sidewall of the hypotube body 100, and at least one stress groove 120 is located at one end of the length direction of the torsion groove 110, or both ends of the length direction of the torsion groove 110 are provided with the stress groove 120. The formation of the stress groove 120 can further improve the performance and structural strength of the hypotube. Specifically, by combining the stress groove 120 with the torsion groove 110, the concentrated stress generated by torsion or bending is effectively dispersed and relieved, thereby prolonging the service life of the hypotube body 100 and improving its reliability.

[0037] Further, in the present embodiment, the cross section of the stress groove 120 is circular, elliptical or waist hole-shaped. The circular and elliptical cross sections can provide more uniform stress dispersion effect and reduce stress concentration phenomenon; while the waist hole shape can provide stronger support in a specific direction to adapt to different use scenarios and stress requirements.

[0038] Further, in the present embodiment, the diameter of the cross section of the stress groove 120 is greater than the opening width of the torsion groove 110, which ensures that the stress groove 120 can disperse stress without excessively weakening the structural strength of the hypotube body 100. By maintaining a certain size difference, the effective dispersion of stress is realized, and the overall rigidity and stability of the hypotube body 100 are ensured.

[0039] In a specific embodiment, a plurality of stress grooves 120 are alternately arranged along the axial direction of the hypotube, and the number of stress grooves 120 is two or more. The plurality of stress grooves 120 are alternately arranged along the axial direction of the hypotube. When the hypotube is subjected to external load or internal stress, the plurality of stress grooves 120 can effectively absorb, disperse and guide the stress flow, avoid local stress concentration, and thus protect the overall structure of the hypotube from damage.

[0040] In a specific embodiment, the cross section of the torsion groove 110 along the axial direction of the hypotube body 100 is annular with an opening. The annular cross section enables the torsion groove 110 to be more uniformly distributed on the sidewall of the hypotube body 100, which can effectively disperse and relieve the stress generated by torsion or bending. When the hypotube is subjected to torsional force, the opening part can deform slightly to absorb and disperse the torsional stress, thereby protecting the hypotube body 100 from excessive stress.

[0041] In a specific embodiment, the cross section of the torsion groove 110 along the axial direction of the hypotube body 100 has a length of 7 / 10-9 / 10 of the circumferential length of the hypotube.

[0042] In a specific embodiment, the two stress grooves 120 adjacent to each other in the axial direction of the hypotube body 100 are separated by an angle of 90 degrees, and the two stress grooves 120 separated from each other in the axial direction of the hypotube body 100 are separated by an angle in the range of 8-10 degrees. Specifically, the two stress grooves 120 adjacent to each other in the axial direction of the hypotube body 100 are ingeniously arranged to be separated by an angle of 90 degrees. Ensuring that the stress grooves 120 can be evenly distributed around the hypotube, and the separation angle between the two stress grooves 120 separated from each other in the axial direction of the hypotube body 100 is precisely controlled in the range of 5-20 degrees, can avoid the structural weakening caused by the excessive density of the stress grooves 120.

[0043] The above has described the embodiments of the present application, the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles, practical applications, or improvements to the technology in the market of the embodiments, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

Claims

1. A hypodermic tube, suitable for being fitted over a neurointerventional guidewire, characterized in that, include: The main body of the sodium ionizer tube; The main body of the sodium hypochlorite tube is a hollow tubular structure with a preset length, and a torsion groove is recessed on the side wall of the main body of the sodium hypochlorite tube. The torsion groove is opened along the circumference of the main body of the sodium hypochlorite tube and is a closed-loop annular structure. Furthermore, there are multiple torsion grooves arranged along the axial direction of the sodium hypochlorite tube body. The closed-loop positions of any adjacent torsion grooves do not correspond, while the closed-loop positions of any interval torsion grooves correspond, and they are spiral-shaped along the axial direction of the sodium hypochlorite tube. Stress grooves are formed on the side wall of the main body of the hysteresis tube, and at least one of the stress grooves is located at one end of the torsion groove along its length.

2. The sodium hypochlorite tube according to claim 1, characterized in that, The spacing between any two adjacent torsion grooves is different.

3. The sodium hypochlorite tube according to claim 2, characterized in that, The circumferential cross-sectional length direction of the torsion groove is perpendicular to the axial direction of the submersible tube body.

4. The sodium hypochlorite tube according to claim 1, characterized in that, The cross-section of the stress groove is circular, elliptical, or oblong.

5. The sodium hypochlorite tube according to claim 4, characterized in that, The cross-sectional diameter of the stress groove is greater than the opening width of the torsion groove.

6. The sodium hypochlorite tube according to claim 1, characterized in that, Multiple stress grooves are alternately arranged along the axial direction of the hysteresis tube, and the number of intervals between the stress grooves is two or more.

7. The sodium hypochlorite tube according to any one of claims 1-3, characterized in that, The cross-section of the torsion groove along the axial direction of the main body of the hyaluronic acid tube is annular with a notch.

8. The sodium hypochlorite tube according to claim 7, characterized in that, The circumferential length of the cross-section of the torsion groove along the axial direction of the main body of the hyaluronic acid tube is 7 / 10 to 9 / 10 of the circumferential length of the hyaluronic acid tube.

9. The sodium hypochlorite tube according to claim 4, characterized in that, The two stress grooves that are adjacent in the axial direction of the main body of the hyaluronic acid tube are spaced at an angle of 90 degrees. The two stress grooves that are axially separated by the main body of the hygrometer tube have an angle between 5 and 20 degrees.

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