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Suture reinforcing material being for use in automatic suturing devices and containing hydrophilic polymer

The technology of a hydrophilic polymer and automatic suture device is applied in the field of suture reinforcement materials to achieve the effect of reducing the risk of air leakage and the risk of tissue rupture

Active Publication Date: 2013-07-17
DOSHISHA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, although conventional suture reinforcing materials for automatic suturing devices have a certain effect in reinforcing the suture site in order to prevent tissue breakage at the suture site (reinforcing effect), but from the point of view of preventing air leakage or liquid leakage at the suture site From the point of view, there is still room for improvement

Method used

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  • Suture reinforcing material being for use in automatic suturing devices and containing hydrophilic polymer
  • Suture reinforcing material being for use in automatic suturing devices and containing hydrophilic polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0141] (1) Production of suture reinforcement materials for automatic suturers

[0142] The suture reinforcing material for an automatic suture device of the present invention was produced as follows.

[0143] [Production Method]

[0144] (i) A sheet that is a mixture of calcium salt and sodium salt of alginic acid ("Kaltostat" (registered trademark); Convatec Japan K.K.; hereinafter, also referred to as "alginic acid-Ca / Na salt sheet.") is cut Into a 3.5 × 7cm square.

[0145] (ii) A 2% sodium alginate solution was applied to the entire circumference of the cut alginic acid-Ca / Na salt sheet.

[0146] (iii) The alginic acid-Ca / Na salt sheet coated with a 2% sodium alginate solution was frozen at -80°C, and then dried with a freeze dryer to form a sponge (porosity).

[0147] (iv) A spongy alginic acid-Ca / Na salt sheet was superimposed on a felt made of polyglycolic acid ("NEOVEIL" (trade name); GUNZE Co., Ltd.) cut into approximately the same size.

[0148] (2) Suturing...

Embodiment 2

[0166] (1) Production of suture reinforcement materials for automatic suturers

[0167] The suture reinforcing material for an automatic suture device of the present invention was produced as follows.

[0168] [Production Method]

[0169] (i) Sodium alginate aqueous solution (2%, 10mL) was poured into a plastic tray (5.3×8.3cm 2 ).

[0170] (ii) Freezing at -80°C.

[0171] (iii) Load into a freeze dryer, and carry out vacuum freeze drying (24 hours).

[0172] (iv) Cut the resulting sponge into 3.5 x 7.0 cm squares.

[0173] (v) A sponge-formed sodium alginate sheet was superimposed on a felt made of polyglycolic acid ("NEOVEIL" (trade name); GUNZE Co., Ltd.) cut into approximately the same size.

[0174] (vi) The neoveil part of the Neoveil tube type (manufactured by GUNZE Co., Ltd.) was replaced with the sheet-like material produced above to produce the suture reinforcing material for automatic suturing device of the present invention. Specifically, cut the sheet mate...

Embodiment 3

[0180] (1) Production of suture reinforcement materials for automatic suturers

[0181] The suture reinforcing material for an automatic suture device of the present invention was produced as follows.

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PUM

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Abstract

A suture reinforcing material which is for use in automatic suturing devices and which exhibits excellent reinforcing effect is provided. A suture reinforcing material for use in automatic suturing devices which includes a sheet (A) that contains at least one biodegradable and bioabsorbable material selected from the group consisting of aliphatic polyesters, polyester ethers, and copolymers thereof, characterized by bearing, on at least one surface of the sheet (A), a layer (B) that contains a hydrophilic polymer.

Description

technical field [0001] The present invention relates to a suture reinforcement material suitable for use in an automatic stapler used in surgery and the like. Background technique [0002] Conventionally, the technique of simultaneously suturing and dissecting lungs, tubular organs, etc. has been widely used in surgical operations. And, in order to perform this technique, a so-called automatic stapler (sometimes called an automatic suture cutter) in which a plurality of staples are embedded is used (Non-Patent Document 1). In addition, an automatic stapler is sometimes used to anastomose tubular tissues such as separated intestines. [0003] The automatic stapler includes: (1) a cutting section having a cutting knife (cutting knife) that cuts away living tissue by sliding on a central rail in a forward and backward direction; There are 2 to 3 rows of suturing sections with staples for suturing living tissue. The suturing portion also typically includes a canridge portion ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L17/00A61B17/10
CPCA61L31/042A61L31/045A61L31/06A61L31/146A61L31/10A61B17/07292A61L31/044C08L5/04C08L89/06C08L67/04
Inventor 萩原明於辻本洋行桥本步桑原正喜中濑有远森田真一郎
Owner DOSHISHA CO LTD
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