Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Tissue anastomat made by low-temperature phase-change memory alloy

A technology of memory alloy and low-temperature phase change, which is applied in the fields of surgical instruments, medical science, and pharmaceutical formulations. It can solve the problems of skin tissue contusion, affecting suturing effect, cracking, etc., and achieves high production efficiency and smooth operation process.

Active Publication Date: 2015-09-09
珠海拓爱医疗科技有限公司
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This connection method has problems that are difficult or impossible to realize in actual process production
First of all, in the actual production process of titanium-nickel memory alloy wire, the required small-diameter wire is formed from a large-diameter wire after repeated stretching (the commonly used wire diameter for intradermal tissue suture is 0.070mm-0.299mm, that is, USP6-0 to USP2-0 / T), the diameter is uniform and the surface of the wire is flat, so it is impossible to form the protruding end at one time during the wire drawing process
In addition, due to the extremely small diameter of the wire, after the wire is stretched, it is almost impossible to form a firm protruding end through stamping, hot-melt deformation and other post-processing methods without affecting the tensile strength of the wire. possible or the process is extremely complex
At the same time, as recorded in the patent, it is difficult or impossible to realize the connection by welding after the middle section is sunken.
Since the material of the suture thread is titanium-nickel, and the material of the suture needle is stainless steel, this method not only has the risk of welding material falling off, but also puts forward higher technical requirements for the welding material and welding tools used; The gap between the inner walls of the blind hole is usually between 0.03 and 0.08mm. Normally, a high-power magnifying glass is required for observation. The welding material is difficult to melt into the tiny gap due to surface tension factors.
Moreover, any hot-melt method may denature and fuse the suture wire at the connection part, or form irregular solder joints on the edge of the blind hole entrance, which will increase the puncture resistance and affect the suture effect
[0004] In addition, the memory alloy intradermal tissue stapler used clinically in the hospital mostly uses non-invasive medical suture needles that are semicircular triangular needles (1 / 2 arc triangular needles), and the needle arc is too large, which is not suitable for intradermal tissue suturing; At the same time, although triangular needles are good for suturing tough tissues (such as abdomen and back), when using triangular needles to suture the eyes and face, it is easy to cause secondary damage such as contusion and cracking of skin tissue, and it is easy to form scars or affect wounds. healing time
Therefore, connecting the semicircular triangular needle has certain limitations in clinical use

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
  • Tissue anastomat made by low-temperature phase-change memory alloy
  • Tissue anastomat made by low-temperature phase-change memory alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A low-temperature phase-change memory alloy tissue stapler, including a medical suture 1 made of titanium-nickel memory alloy and a layer of silver ion plating material with a thickness of 0.1-1 μm deposited on the surface, and one end of the suture 1 is connected to a 3 / 8-arc non-injury medical suture needle 2, the needle type is a round needle, the non-puncture end of non-injury medical suture needle 2 adopts 3 laser drilling methods to form blind holes, the hole depth is 1.5mm, and different suture needles are connected to meet Surgical suturing needs of different parts. The phase transition temperature of the suture was set at 24°C, and the memorized shape was a straight line.

Embodiment 2

[0027] A low-temperature phase-change memory alloy tissue stapler, including a medical suture 1 made of a titanium-nickel memory alloy and a silver ion plating layer with a thickness of 0.1 to 1 μm deposited on the surface of the alloy. One end of the suture 1 is connected to a 3 made of stainless steel. / 8 degree arc non-invasive medical suture needle 2, the needle type is triangular needle, the non-puncture end of non-invasive medical suture needle 2 adopts 3 laser drilling methods to form a blind hole, the hole depth is 1.8mm, by connecting different suture needles, To meet the suturing needs of different parts. The phase transition temperature of the suture was set at 25°C, and the memorized shape was a straight line.

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a tissue anastomat made by low-temperature phase-change memory alloy. The tissue anastomat comprises a suture line and a non-damage medical suture line fixedly connected with one end or two ends of the suture line. The suture line is a titanium-nickel alloy wire which has a linear memory shape in the range from 18 to 26 DEG C. The tissue anastomat made by low-temperature phase-change memory alloy has following beneficial effects: with a product, the suture line is at the conventional room temperature ranging from 18 to 26 DEG C in an operating room; after the package of the product is opened, the suture line naturally restores in the linear memory state; before stitching, the suture line is shaped under effect of external force; after stitched into a human body, the suture line again restores in the linear memory state; and purposes of conducting an intradermal suture operation smoothly, improving saturation precision of the operation and decreasing the duration for saturation of operation are fulfilled.

Description

technical field [0001] The invention relates to a medical tissue stapler, in particular to a tissue stapler using a titanium-nickel memory alloy wire as a base material. Background technique [0002] At present, a memory alloy intradermal tissue stapler commonly used clinically in hospitals includes a medical suture made of titanium-nickel or titanium-nickel-silver memory alloy. The memory shape is a straight line, and it is connected to one or both ends of the suture. It is composed of non-damaging medical suture needles of different specifications and shapes made of stainless steel. And set the shape memory of the memory alloy suture wire to be linear, and the phase transition temperature is between 27 and 33°C. The intradermal suture method is used for suture. When the suture wire enters the human body, the linear memory state is restored, and the recovery process produces mechanical damage. The tension makes the surgical incisions fit together naturally, thus meeting th...

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): A61B17/06A61L17/04A61L17/14
CPCA61B17/06066A61B17/06166A61B2017/00867A61B2017/06028A61B2017/06052A61B2017/0608A61B2017/06176A61L17/04A61L17/14A61L17/145A61L2300/104A61L2400/16
Inventor 韩永俊
Owner 珠海拓爱医疗科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products