Unlock instant, AI-driven research and patent intelligence for your innovation.

Nickel-titanium alloy hyperelastic puncture needle

A nickel-titanium alloy and puncture needle technology, which is applied in puncture needles, trocars, medical science, etc., can solve the problem of the location and angle difference of the puncture of the right ventricular septum, the difficulty in controlling the positioning and puncture direction, and the unclear long-term prognosis and other issues to achieve the effect of excellent security, increased function scalability, and high security

Pending Publication Date: 2021-06-25
江苏盛玛特新材料科技有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above three devices and methods all have major defects, such as combined atrial septal bulge tumor, huge right atrium, postoperative patients with atrial septum, etc., making it difficult to popularize and apply clinically
1. The above three methods must enter the right ventricular septum through the superior vena cava approach, which makes it difficult to control the positioning and puncture direction when puncturing the ventricular septum; 2. The Brockenbrough puncture needle is a metal hollow needle, which is hard and difficult to bend. The position and angle of the right ventricular septum are poor; 3. Although the radiofrequency ablation puncture needle for puncturing the interatrial septum or the guide wire connected to the radiofrequency energy diathermy pen improves the puncture angle, radiofrequency ablation brings irreversible incidental effects on the puncture site and surrounding areas. Injury, long-term prognosis unknown

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Nickel-titanium alloy hyperelastic puncture needle
  • Nickel-titanium alloy hyperelastic puncture needle
  • Nickel-titanium alloy hyperelastic puncture needle

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The puncture needle preparation method of the present invention comprises the following steps:

[0030] 1) Select wire or pipe: the material of wire or pipe is NiTi or NiTi-X alloy, where X is one or more elements selected from Nb, Cu, Fe and Ag;

[0031] 2) Needle point production: the needle point 101 is manufactured by machining and grinding the needle point or by etching, and the shape of the end of the needle point is conical or elliptical in oblique section;

[0032] 3) Sizing and aging treatment: carry out sizing treatment on the puncture needle, first install a sizing device on the needle tip 101 and the middle section 102, and preset the bending angle of one end of the needle tip (including the needle tip and part of the needle body) to be 30-90°; then Place the puncture needle in a shaping furnace for shaping;

[0033] 4) Surface treatment: Clean the surface of the shaped puncture needle body.

[0034] In step 1), the atomic ratio of Ni in the NiTi alloy is ...

Embodiment 1

[0039]A solid wire puncture needle having a chemical composition of NiTi (Ti-51at%Ni) alloy was prepared.

[0040] 1) Select NiTi wire, round wire with an outer diameter of 1mm, and cut the wire with a suitable length;

[0041] 2) Through mechanical processing, the length of the needle tip 101 is 0.5 cm, and the angle between the oblique section and the middle section 102 is 30°;

[0042] 3) First install a shaping device at the needle tip 101, with a preset bending angle of 60° at one end of the needle tip and a length of 2 cm; then place the tubular puncture needle in a shaping treatment furnace with a shaping temperature of 500°C and a shaping time of 10 minutes;

[0043] 4) Carry out surface pickling cleaning treatment.

[0044] Such as figure 2 As shown, the superelastic critical stress of the puncture needle is 700MPa, and the tensile breaking strength is 1400MPa. The metal protective sheath provided for the puncture needle is a metal circular tube with an outer diam...

Embodiment 2

[0046] A tubular puncture needle having a chemical composition of NiTiNb (the atomic ratio of Ti:Ni element is 0.9:1, and the atomic percentage of Nb element is 10%) was prepared.

[0047] 1) Select a NiTiNb pipe with an outer diameter of 1 mm, and cut a pipe of appropriate length;

[0048] 2) Through mechanical processing, the length of the needle tip 101 is 0.3 cm, and the angle between the oblique section and the middle section 102 is 20°;

[0049] 3) First install a shaping device at the needle tip 101, with a preset bending angle of 50° at one end of the needle tip and a length of 2 cm; then place the tubular puncture needle in a shaping treatment furnace with a shaping temperature of 530°C and a shaping time of 15 minutes;

[0050] 4) Carry out surface pickling cleaning treatment.

[0051] Such as image 3 As shown, the superelastic critical stress of the puncture needle is 780MPa, and the tensile breaking strength is 1100MPa. The metal protective sheath is a circular...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
angleaaaaaaaaaa
elastic modulusaaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

According to the nickel-titanium alloy hyperelastic puncture needle, the preset angles of the needle point part are diversified, and different interventricular septum and interventricular septum puncture tasks can be completed. According to the hollow tube puncture needle device, the functions of radiography positioning and heart internal pressure monitoring can be achieved in an auxiliary mode through the five-way piston arranged at the tail. Compared with the prior art, the puncture needle has a large-deformation mechanical supporting effect, has an excellent needle inserting angle, is small in needle body and high in safety, and can try atrial septum or septum puncture for multiple times. The puncture needle has small incidental damage to cardiac septum and puncture surrounding tissues through a physical puncture method, the brought potential hazards are greatly reduced, and the safety of the puncture needle is superior to that of the prior art.

Description

technical field [0001] The invention relates to the field of alloy metal material processing, in particular to a nickel-titanium alloy superelastic puncture needle. Background technique [0002] Transcatheter transseptal puncture of the heart is one of the commonly used techniques in clinical practice. It provides an effective surgical path for interventional therapy of the left heart through the venous-right heart system, and is an indispensable method for many cardiac interventional procedures. Such as transcatheter radiofrequency ablation of atrial fibrillation, transcatheter mitral valvuloplasty, transcatheter left atrial ear closure, transcatheter atrial septostomy and so on. [0003] At present, the commonly used devices and methods for transcatheter puncture of the heart ventricular septum mainly include the following three types: (1) from the superior vena cava approach, using a Brockenbrough puncture needle (St Jude Medical Inc) into the right ventricle to puncture ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/34A61L31/02A61L31/14
CPCA61B17/3417A61B2017/00526A61B2017/3454A61L31/022A61L31/14A61L2400/16
Inventor 刘晶杜宝鹏郝世杰
Owner 江苏盛玛特新材料科技有限公司