CN207152630U - A kind of superelastic NiTi alloy material medical flexible puncture needle - Google Patents

Abstract

The utility model is applied to technical field of medical instruments, there is provided a kind of superelastic NiTi alloy material medical flexible puncture needle, including needle body, the needle body include an at least super-elasticity NiTi memory alloy wire material, and the end face of described needle body one end is inclined-plane.Needle body of the present utility model uses super-elasticity NiTi memory alloy wire material, its coefficient of friction is small, it is in light weight, be less likely to occur to be plastically deformed, turn to flexible, the barriers such as thick blood vessel or nerve can be got around in tissue and reach target point, the puncture needle has good biocompatibility, corrosion-resistant, the advantages that will not causing side effect into human body；Needle body one end end face is inclined-plane, so that puncture needle is in puncture process, the inclined-plane of needle end part by the tissue pressure perpendicular to its inclined-plane cause pin bend realization turn, pass through angle of the rotation adjustment inclined-plane of puncture needle in tissue, it is achieved thereby that the turning of puncture needle different directions in tissue, and then reach target point.

Description

A kind of superelastic NiTi alloy material medical flexible puncture needle

Technical field

The utility model belongs to technical field of medical instruments, more particularly to a kind of superelastic NiTi alloy material medical flexible Puncture needle.

Background technology

With the popularization of Minimally Invasive Surgery, doctor in puncturing operation is intervened in order to reduce to the secondary injury of patient, it is necessary to Get around the barriers such as thick blood vessel or nerve and reach affected part.In intervention operation puncturing treatment, puncture needle bending is appointed without occurring What plastic deformation or broken needle phenomenon, therefore the demand of the puncture needle to can precisely reach affected part is very strong.

Traditional medical puncture needle is fabricated by stainless steel material, and the elastic strain limit of the material is small and bends Curvature is small, substantially straight in puncture process to puncture, it is impossible to turn and can not get around the barriers such as thick blood vessel or nerve and arrive Up to target point；And stainless steel puncture needle unit weight is big, and coefficient of friction is big, the resistance being subject in puncture process compared with Greatly, plastic deformation or broken needle phenomenon easily occur for puncture needle, and difficulty is brought to operation.

In addition, the patent of Application No. 201620098165.1 discloses a kind of PTC insertion puncture needles, applied to puncture courage Pipe Surgery, puncture needle needs percutaneous transhepatic puncture to enter bile duct, and this puncture needle is rigidly big, it is impossible to is bent around blood The barriers such as pipe nerve, Direct perforantes reach bile duct, so easily cause secondary injury to patient.

Utility model content

The purpose of this utility model is to provide a kind of superelastic NiTi alloy material medical flexible puncture needle, it is intended to solves The unit weight for the puncture needle that Surgery uses is big in the prior art, coefficient of friction is big, puncture process is difficult, bullet Strain limit is small, the technical problem of secondary injury is easily caused to patient for property.

What the utility model was realized in：A kind of superelastic NiTi alloy material medical flexible puncture needle is provided, is wrapped Needle body is included, the needle body includes an at least super-elasticity NiTi memory alloy wire material, and the end face of described needle body one end is inclined-plane.

Further, the needle body is single super-elasticity NiTi memory alloy wire material.

Further, a diameter of 0.3mm~1.5mm of the needle body.

Further, a diameter of 1mm of the needle body.

Further, the length of the needle body is 200mm~400mm.

Further, the length of the needle body is 300mm.

Further, the gradient on the inclined-plane is 30 degree~60 degree.

Further, the gradient on the inclined-plane is 45 degree.

Implement a kind of superelastic NiTi alloy material medical flexible puncture needle of the present utility model, have below beneficial to effect Fruit：Needle body uses super-elasticity NiTi memory alloy wire material, its coefficient of friction is small, it is in light weight, there is larger elastic strain limit, It is less likely to occur to be plastically deformed, turns to flexibly, the barriers such as thick blood vessel or nerve can be got around in tissue and reach mesh Punctuate, and the puncture needle has good biocompatibility, corrosion-resistant, the advantages that will not causing side effect into human body；Pin The end face of body one end is inclined-plane so that puncture needle is in puncture process, and the inclined-plane of needle end part is by the human body perpendicular to its inclined-plane Organizational stress causes the pin realization that bends to be turned, by angle of the rotation adjustment inclined-plane in tissue of puncture needle, from And the turning of puncture needle different directions in tissue is realized, and then reach target point.

Brief description of the drawings

In order to illustrate more clearly of the technical scheme in the embodiment of the utility model, will make below to required in embodiment Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the utility model, For those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings Other accompanying drawings.

Fig. 1 is the structural representation for the superelastic NiTi alloy material medical flexible puncture needle that the utility model embodiment provides Figure；

Fig. 2 is the superelastic NiTi alloy material medical flexible puncture needle of the utility model embodiment offer in puncture process Middle cut-through thing reaches the schematic diagram of target point.

Embodiment

In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining The utility model, it is not used to limit the utility model.

It should be noted that when element is referred to as " being fixed on " or " being arranged at " another element, it can directly or It is connected on another element.When an element is known as " being connected to " another element, it can be direct or indirect connection To another element.

It should also be noted that, the orientation term such as left and right, upper and lower in the utility model embodiment, is only relative each other Concept or using the normal operating condition of product as reference, and should not be regarded as restrictive.

The medical puncture needle elastic strain limit of the utility model embodiment is big, can get around the obstacles such as thick blood vessel or nerve Thing reaches the clinical demand in affected part without any plastic deformation or broken needle situation occurs, medical by super-elasticity Ultimum Ti The design of flexible puncture needle, the unit weight that solves the puncture needle that current Surgery uses is big, coefficient of friction Greatly, puncture process is difficult, elastic strain limit is small, and plastic deformation or broken needle problem easily occurs.

Specifically, as depicted in figs. 1 and 2, the superelastic NiTi alloy material that the utility model embodiment provides is medical soft Property puncture needle includes needle body 1, and the needle body 1 includes an at least super-elasticity NiTi memory alloy wire material, and an at least super-elasticity Ultimum Ti silk material is intertwined to form needle body 1.In addition, the end face of one end of needle body 1 is inclined-plane 11.

The needle body 1 of the utility model embodiment uses super-elasticity NiTi memory alloy wire material, and its coefficient of friction is small, weight Gently, there is larger elastic strain limit, it is not easy to be plastically deformed, turn to flexibly, tissue interior energy gets around thick blood Pipe or the barrier 2 such as nerve reach target point 3, and the puncture needle has good biocompatibility, corrosion-resistant, into human body The advantages that side effect will not be caused；In addition, the end face of one end of needle body 1 is inclined-plane 11 so that puncture needle is in puncture process, pin The inclined-plane 11 of end by the tissue pressure perpendicular to its inclined-plane 11 cause pin bend realization turn, pass through puncture needle Angle of the rotation adjustment inclined-plane in tissue, it is achieved thereby that the turning of puncture needle different directions in tissue, And then reach target point 3.

Preferably, in one embodiment of the present utility model, needle body 1 is single super-elasticity NiTi memory alloy wire material, To ensure the smoothness on the surface of needle body 1 so that the secondary injury of human body is preferably minimized when needle body 1 punctures in tissue.

Preferably, in one embodiment of the present utility model, a diameter of 0.3mm~1.5mm of needle body 1, to ensure pin Its weight in the case where that can reach rigid demand and curvature demand of body 1 is minimum.Wherein, super-elasticity Ultimum Ti is medical The different-diameter of flexible puncture needle has different rigidity, and diameter is bigger, and rigidity is bigger, and radius of curvature is smaller, but its is heavy simultaneously Amount is also bigger, therefore needs the super-elasticity Ultimum Ti from different-diameter size to cure for the tissue of different hardness Use flexible puncture needle.It is further preferred that a diameter of 0.5mm or 0.8mm or 1mm or 1.2mm of needle body 1.It is understood that In other embodiments of the present utility model, the diameter of needle body 1 might be less that 0.3mm or more than 1.5mm.

Preferably, in one embodiment of the present utility model, the length of needle body 1 is 200mm~400mm, to ensure pin Its weight in the case where that can reach target point 3 of body 1 reaches minimum.Wherein, the overall length of needle body 1 is longer, and it can be arrived The target point 3 reached is more remote, while also longer positioned at the remaining length of human external, but the total length of needle body 1 is longer that its is heavy Amount is bigger, therefore needs the super-elasticity Ultimum Ti from different length size medical for the tissue of diverse location Flexible puncture needle.It is further preferred that the length of needle body 1 is 250mm or 300mm or 350mm.It is understood that in this reality With in new other embodiments, the length of needle body 1 might be less that 200mm or more than 400mm.

Preferably, in one embodiment of the present utility model, the gradient on the inclined-plane 11 of needle body 1 is 30 degree~60 degree, To ensure that needle body 1 can carry out turning puncture in tissue with certain radius of curvature, but it is unlikely to again simultaneously Very big injury is caused to tissue.Wherein, super-elasticity Ultimum Ti medical flexible puncture needle needle end part inclined-plane 11 Inclination angle is different, and the inclined-plane 11 of its needle end part is different by the tissue pressure perpendicular to its inclined-plane 11, in tissue Radius of curvature is different, and the inclination angle of inclined-plane 11 of puncture needle needle end part is smaller, and the inclined-plane 11 of its needle end part is by perpendicular to its inclined-plane Tissue pressure is bigger, and radius of curvature is bigger.It is further preferred that the gradient on the inclined-plane 11 of needle body 1 is 35 degree or 40 degree Or 45 degree or 50 degree or 55 degree.It is understood that in other embodiments of the present utility model, the inclined-plane 11 of needle body 1 inclines Gradient might be less that 30 degree or more than 60 degree.

In addition, handle can be installed in the one end of needle body 1 away from inclined-plane 11, in order to hand-held.Meanwhile can also be in needle body 1 Upper install sensor, in order to position of the real-time tracking positioning needle body 1 in tissue.

In summary, the medical flexible puncture needle of the utility model embodiment, its elastic strain limit is big, bending curvature half Footpath is big, and coefficient of friction is small, simple in construction, in light weight；It should using small, in light weight, the larger elasticity of Nitinol coefficient of friction Become the limit, and with good biocompatibility, corrosion-resistant, the advantages that will not causing side effect into human body, there is provided one Kind super-elasticity Ultimum Ti medical flexible puncture needle, the puncture needle elastic strain limit are big, it is not easy to it be plastically deformed, Turn to flexibly, the barriers 2 such as thick blood vessel or nerve can be got around in tissue and reach target point 3.

Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model Any modification, equivalent substitution or improvement made within the spirit and principle of utility model etc., should be included in the utility model Protection domain within.

Claims (8)

1. a kind of superelastic NiTi alloy material medical flexible puncture needle, it is characterised in that including needle body, the needle body is included extremely A few super-elasticity NiTi memory alloy wire material, the end face of described needle body one end is inclined-plane；It is provided with the needle body for real When position of the needle body in tissue described in track and localization sensor.

2. superelastic NiTi alloy material medical flexible puncture needle as claimed in claim 1, it is characterised in that the needle body is Single super-elasticity NiTi memory alloy wire material.

3. superelastic NiTi alloy material medical flexible puncture needle as claimed in claim 2, it is characterised in that the needle body A diameter of 0.3mm~1.5mm.

4. superelastic NiTi alloy material medical flexible puncture needle as claimed in claim 3, it is characterised in that the needle body A diameter of 1mm.

5. superelastic NiTi alloy material medical flexible puncture needle as claimed in claim 2, it is characterised in that the needle body Length is 200mm~400mm.

6. superelastic NiTi alloy material medical flexible puncture needle as claimed in claim 5, it is characterised in that the needle body Length is 300mm.

7. the superelastic NiTi alloy material medical flexible puncture needle as described in any one of claim 1~6, it is characterised in that The gradient on the inclined-plane is 30 degree~60 degree.

8. superelastic NiTi alloy material medical flexible puncture needle as claimed in claim 7, it is characterised in that the inclined-plane Gradient is 45 degree.