CN203153823U

CN203153823U - Outer sheath tube

Info

Publication number: CN203153823U
Application number: CN 201320124191
Authority: CN
Inventors: 王约翰; 张志飞; 张启明
Original assignee: HANGZHOU QIMING MEDICAL DEVICE CO Ltd
Current assignee: Hangzhou Qiming Medical Devices Co ltd
Priority date: 2013-03-18
Filing date: 2013-03-18
Publication date: 2013-08-28
Anticipated expiration: 2023-03-18

Abstract

The utility model relates to an outer sheath tube. The outer sheath tube comprises an inner layer, a reinforcing layer and an outer layer, wherein the inner layer, the reinforcing layer and the outer layer are sequentially arranged. The reinforcing layer is arranged between the inner layer and the outer layer and is shaped like a tube, a plurality of layers of incisions are formed in the side wall of the reinforcing layer in the axial direction, every two adjacent layers of incisions are arranged in a staggered mode, and on the axial projective plane of the outer sheath tube, the staggering included angle between connection lines of corresponding ends of every two adjacent layers of incisions to the circle center of the projective plane is alpha, wherein the alpha is larger than 0 degree and smaller than 90 degrees. Axial strength of the outer sheath tube is guaranteed, and meanwhile, the outer sheath tube is strong in axial compliance and can meet the requirement that a released implantable medical instrument is taken back in an interventional operation.

Description

The epitheca pipe

Technical field

This utility model relates to technical field of medical instruments, relates in particular to a kind of epitheca pipe.

Background technology

Wicresoft's interventional therapy refers under the situation of not operating on, do the passage aisle of several millimeters of diameters at skin, blood vessel, or by the original pipeline of human body, under the guiding of image documentation equipment, the Therapeutic Method of the wound minimum that the focus part is treated, its used therapeutic device generally includes sheath pipe induction system.

Sheath pipe induction system generally includes epitheca pipe and interior sheath pipe, be example with the blood vessel access, the epitheca pipe extends along the human vas passage, build a path that arrives focus for implantation instrument, that is: implantation instrument enters the epitheca pipe from epitheca pipe proximal port, and prolong through the epitheca pipe and be released into correct position from the far distance port of epitheca pipe, the focus part is treated, reach the purpose for the treatment of disease.In the implantation instrument dispose procedure, as the case may be, the implantation instrument that needs sometimes to discharge and to launch is retracted in the epitheca pipe again, particularly runs into emergency situation in operation, must race against time and regain implantation instrument as early as possible.

But existing conveying epitheca pipe for delivery of implantation instrument is many to be manufactured by macromolecular material, though the attribute performance of macromolecular material is good, its elasticity and intensity are relatively poor.At present, though also there is employing that reinforcement material is applied in the macromolecular material, for example weave webmaster, or elastic tube is done reinforcement, with the inside and outside formation epitheca pipe of macromolecular material peplos at reinforced pipe, but above-mentioned measure has all just increased fold resistance and the pressure-bearing property of epitheca pipe, and the implantation instrument that runs into when the epitheca pipe is regained implant is difficult to back go into, the problem of sheath pipe fold and obviously do not solve.

Therefore, the epitheca pipe of existing clinical usefulness is because its elasticity is bad or the shape restore funcitons is not strong, a little less than the axial strength, if reclaim implantation instrument by force, then the epitheca pipe far-end mouth of pipe has the situation of tearing to take place, perhaps mouth of pipe expansion can't be satisfied and regain the requirement that has discharged implantation instrument in the intervene operation.

The utility model content

Main purpose of the present utility model is to provide a kind of epitheca pipe, makes the sheath pipe have stronger axial compliance in the time of the axial strength that is intended to guarantee the sheath pipe.

In order to achieve the above object, the utility model proposes a kind of epitheca pipe, comprise the internal layer, enhancement Layer and the skin that set gradually, enhancement Layer places between the ectonexine, and described enhancement Layer is tubulose, and its sidewall upper edge is axially arranged with some layers of otch, otch between the adjacent two layers shifts to install, and on the axis projection face of epitheca pipe, the corresponding end of the otch between the adjacent two layers is α to the formed dislocation angle of the line in the center of circle, perspective plane, 0＜α＜90 °.

Preferably, otch is parallel to each other between each layer.

Preferably, each layer is provided with at least two otch.

Preferably, each layer otch is symmetrical arranged in this aspect.

Preferably, each layer otch asymmetric setting on this aspect.

Preferably, each layer is provided with two otch; The corresponding end of the otch between the adjacent two layers is to the formed dislocation angle of the line in the center of circle, perspective plane α=60 °.

Preferably, described middle level and described inside and outside layer bond by heat fusing or binding agent mode; Perhaps, described inside and outside layer is combined with described middle level by immersion or sprayed coating mode.

A kind of epitheca pipe that the utility model proposes, by on the sidewall of the tubulose enhancement Layer of epitheca pipe, some layers of otch being set vertically, otch between the adjacent two layers shifts to install, and on the axis projection face of epitheca pipe, the corresponding end of the otch between the adjacent two layers to the formed dislocation angle of the line in the center of circle, perspective plane is α, 0＜α＜90 °, thus, in the axial strength that guarantees the epitheca pipe, make the epitheca pipe have stronger axial compliance, satisfy and regain the requirement that has discharged implantation instrument in the intervene operation.

Description of drawings

Fig. 1 is the perspective view of this utility model epitheca pipe preferred embodiment enhancement Layer;

Fig. 2 is the dislocation angle sketch map that otch corresponding end between the adjacent two layers forms on the axis projection face of epitheca pipe shown in Figure 1.

In order to make the technical solution of the utility model clearer, clear, be described in further detail below in conjunction with accompanying drawing.

The specific embodiment

As shown in Figure 1, Fig. 1 is the perspective view of this utility model epitheca pipe preferred embodiment enhancement Layer.

A kind of epitheca pipe that present embodiment proposes, comprise the internal layer, enhancement Layer 10 and the skin that set gradually from the inside to the outside along the radial direction of epitheca pipe, enhancement Layer 10 places between the ectonexine, in the present embodiment, enhancement Layer 10 is tubulose, its sidewall upper edge is axially arranged with the penetrating cross sections 20 of some layers, otch 20 between the adjacent two layers shifts to install, and on the axis projection face of epitheca pipe, the corresponding end of the otch 20 between the adjacent two layers is α to the formed dislocation angle of the line in the center of circle, perspective plane, 0＜α＜90 °.

Particularly, as a kind of preferred implementation, as shown in Figures 1 and 2, otch 20 between each of present embodiment layer is parallel to each other, each layer is arranged with two otch 20 along the circumference of tubulose enhancement Layer 10, and the corresponding end of the otch between the adjacent two layers 20 is to the formed dislocation angle of the line α of the center of circle, perspective plane O=60 °, as shown in Figure 2.Be example with adjacent three layers of otch shown in Figure 1, be designated as 20a, 20b, 20c from top to bottom successively,

otch

20a, 20b, 20c corresponding end are respectively and are expressed as a1, b1, c1, then above-mentioned adjacent three layers of

otch

20a, 20b, 20c be on the axis projection face of epitheca pipe (as shown in Figure 2), and each corresponding end a1, b1, c1 are to the formed dislocation angle of the line α of the center of circle, perspective plane O=60 °.

Said structure makes epitheca pipe integral body have better crooked pliability, have better axial strength simultaneously, and implantation instrument is regained smoothly, and epitheca pipe distal head axially the fold phenomenon can not take place.

Need to prove that the corresponding end of the otch 20 between the above-mentioned adjacent two layers can also be got other values between 0-90 ° to the formed dislocation angle of the line α of the center of circle, perspective plane O, does not repeat them here.

The quantity of above-mentioned each layer otch 20 can also be set to more than three or three as required; Perhaps, each layer otch 20 adopts asymmetric setting in this aspect.

In addition, the enhancement Layer 10 of present embodiment said structure can be arranged on an end or the interlude of epitheca pipe, does not limit at this.

As a kind of embodiment, in the present embodiment, middle level and inside and outside layer can bond by heat fusing or binding agent mode; Perhaps, inside and outside layer is combined with the middle level by immersion or sprayed coating mode.

In addition, as a kind of embodiment, the surface of above-mentioned epitheca pipe can scribble hydrophilic coating, to strengthen the slickness of epitheca tube-surface; Scribble the effective water of epitheca of hydrophilic layer moistening after, have the smooth of similar Misgurni anguillicaudati surface.

This utility model embodiment epitheca pipe, by on the sidewall of the enhancement Layer of epitheca pipe tubulose, some layers of otch 20 being set vertically, otch 20 between the adjacent two layers shifts to install, and on the axis projection face of epitheca pipe, the corresponding end of the otch 20 between the adjacent two layers to the formed dislocation angle of the line in the center of circle, perspective plane is α, 0＜α＜90 °, thus, in the axial strength that guarantees the epitheca pipe, make the epitheca pipe have stronger axial compliance, satisfy and regain the requirement that has discharged implantation instrument in the intervene operation.

The above only is preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or flow process conversion that utilizes this utility model description and accompanying drawing content to do; or directly or indirectly be used in other relevant technical field, all in like manner be included in the scope of patent protection of the present utility model.

Claims

1. epitheca pipe, comprise the internal layer, enhancement Layer and the skin that set gradually, enhancement Layer places between the ectonexine, it is characterized in that described enhancement Layer is tubulose, its sidewall upper edge is axially arranged with some layers of otch, otch between the adjacent two layers shifts to install, and on the axis projection face of epitheca pipe, the corresponding end of the otch between the adjacent two layers is α to the formed dislocation angle of the line in the center of circle, perspective plane, 0＜α＜90 °.

2. epitheca pipe according to claim 1 is characterized in that otch is parallel to each other between each layer.

3. epitheca pipe according to claim 2 is characterized in that, each layer is provided with at least two otch.

4. epitheca pipe according to claim 3 is characterized in that, each layer otch is symmetrical arranged in this aspect.

5. epitheca pipe according to claim 3 is characterized in that, each layer otch be asymmetric setting on this aspect.

6. epitheca pipe according to claim 4 is characterized in that, each layer is provided with two otch; The corresponding end of the otch between the adjacent two layers is to the formed dislocation angle of the line in the center of circle, perspective plane α=60 °.

7. according to each described epitheca pipe among the claim 1-6, it is characterized in that described middle level and described inside and outside layer bond by heat fusing or binding agent mode; Perhaps, described inside and outside layer is combined with described middle level by immersion or sprayed coating mode.