WO2014042600A2

WO2014042600A2 - Shaped surgical thread for intracorporal knotting and method of production

Info

Publication number: WO2014042600A2
Application number: PCT/SK2013/000010
Authority: WO
Inventors: Jozef BABALA
Original assignee: Babala Jozef
Priority date: 2012-09-17
Filing date: 2013-09-16
Publication date: 2014-03-20
Also published as: EP2895082A2; CN104619268A; IN2015KN00608A; WO2014042600A3; HK1210003A1

Abstract

Shaped surgical suture for intracorporeal knotting is shaped from an elastic surgical suture that is gelatine coated or thermally treated with shape memory to form two 3D open and unfastened loops (1) ended with "C" curve (2) whereas the first loop (1) is equipped with a surgical needle (3).

Description

SHAPED SURGICAL THREAD FOR INTRACORPORAL KNOTTING AND

METHOD OF PRODUCTION

Technical Field of the Invention

The invention applies to the shaped surgical sutu re for intracorporeal knotting in laparoscopy and thoracoscopy stitching and the method of its fabrication . The invention is classified among surgical instruments.

Existing Status of the Technique

There currently are various types of surgical stitching materials specified by the quality of the suture itself: knitted suture and monofilament suture, absorbable and non-absorbable suture as well as by various thickness. Atraumatic stitching material that is used almost exclusively today is equipped with a needle on one end. Surgical needles are characterised by their size, curving, needle body and point section shape. During our resecurveh of the instruments available, we have not come across a suture with modified shape for the purposes of knot tying in the endoscopic surgery. For example, we know of the endoloop ligature used in the endoscopic surgery that enables tightening a pre-prepared loop which differs from the knitting and knotting method proposed by us mainly in the fact that it is not knitting . The endoscoping surgery knows also instruments for knitting using atraumatic stitching material that is equipped with a long suture and the knot is made extracorporeally, i.e. outside the body cavity where the surgery is made. Also mechanical instruments for endoscopic stitching were developed : LSI Solition refers to the "Titanium knot device for minimally invasive surgery" „Nobel Automatic Laparoscopic Knotting and Suturing device" published in October 2010 in the Health Care & Hospitals news in Delhi, Delhi, I ndia or laparoscopic Knot-Tying Device for Minimally Invasive Cardiac Surgery" (Eur J Card iothorac Surg .) and many others. Our design is different because it does not presuppose use of a sewing machine but uses common endo-surg ical instruments. Another area covers mechanical instruments - endo staplers that put the tissue together by stapling it with staples and close the tissue mechanically. However, they cannot fully replace stitching by a surgical atraumatic material.

Stitching and correct making of the first knot to prevent any unwanted unfastening is still a demanding and various time requiring activity in the endoscopic surgery. We can assume that the atraumatic sewing material will always have its place in the open as well as mini-invasive endoscopic surgery.

These facts led to the effort to make the intracorporeal knotting more simple during stitching in laparoscopic and thoracoscopic surgery by applying during surgery a device in the involved place as a surgical aid in the form of an open and unfastened knot.

This effort resulted in the invention described below and this invention solves the shaped surgical suture for intracorporeal knotting and the method of its fabrication .

Background of the Invention

The above described drawbacks are removed by the shaped surgical suture for intracorporeal knotting and the method of its fabrication according this invention . The essence of the shaped surgical suture for intracorporeal knotting lies in the fact that the suture is shaped from an elastic surgical suture with shape memory to form two 3D open and unfastened loops finished with a "C" curve while the first loop is equipped with a surgical needle. The surgical suture is either heat treated on a special device or gelatine coated to attain its shape memory. This innovative idea can be used to produce a pre-prepared double knot where two 3D open and unfastened loops turn clockwise and are arranged in a series. The "C" section of the curve that ties on them is left-handed and its bottom curve ends before the central area of the first loop. This innovative idea can also be applied to fabrication of another pre-prepared double knot where the two 3D open and unfastened loops turn anticlockwise and are arranged in a series. The "C" section of the curve that ties on them is right-handed and its upper curve ends before the central area of the first loop. This innovative idea can also be applied to make another pre-prepared slip knot where the two 3D open and unfastened loops are arranged parallelly whereas the first loop turns to the left and the second loop turns to the right and the bottom curve of the "C" section of the curve that ties on it ends before the central area of the second loop.

The method of fabrication of the shaped surgical suture for intracorporeal knotting consists in the fact that the elasticity and shape memory of the surgical suture is the result of thermal treatment of the surgical suture or gelatine coating of the surgical suture. Surgical suture undergoes thermal treatment where surgical suture is reeled on a 3D device of open and unfastened loops and "C" curve of the double or slip knot and is exposed to the temperature of up to 90°C for 1 minute at the most. In case of gelatine coating, surgical suture is coated with liquid gelatine and then reeled on the 3D device of open and unfastened loops and "C" curve of the double or slip knot until the gelatine solidifies.

The advantages of the shaped surgical suture for intracorporeal knotting and the method of its fabrication accord ing to this invention consist in the fact that the suture has a pre-prepared 3D shape with loops that the surgical instrument can easily and precisely thread through . After grasping the correctly directed end of the suture with the instrument threaded through and after the subsequent traction of both ends of the suture apart from each other, a precise knot is created and fastened . This way, one saves the time necessary to make the knot using endoscopic instruments. The pre-defined shape of the suture does not allow making a wrong step, e.g. a loop oriented the other way round . This way, one can achieve constant knotting with the resulting higher safety of the knot applied .

The proposed methods to attain the shape memory of the suture, namely: thermal treatment of the material and suture gelatine coating appear not to have an influence on the nature of the material. The suture becomes elastic as regards its 3D shape but its strength and the longitudinal pulling length remains unchanged .

Description of the Invention

The invention of the shaped surgical suture for intracorporeal knotting is further explained on drawings where fig . 1 illustrates the pre- prepared unfastened double knot with left-handed "C" curve. Fig. 2 illustrates the pre-prepared unfastened double knot with right-hand "C" curve. Fig. 3 illustrates the pre-prepared unfastened slip knot.

Examples of Application

Individual applications of the invention are for illustration only and should not be understood as restrictive as to the technical solutions. Experts familiar with the technique can run no more than routine experiments to find many equivalents to the specific application of the technical solution . Such equivalents will come under the scope of the below patent claims as well.

Experts familiar with the technique cannot have any problem with optimum design and, therefore, these signs have not been solved in detail.

Example 1

In this case of application of the invention , the described shaped surgical suture for intracorporeal knotting is the first version of the double knot as shown in the figure 1 . The elastic surgical suture with shape memory is shaped to form two 3D open and unfastened loops 1 finished with a "C" curve 2. The first loop 1 is equipped with a surgical needle 3. The surgical suture used is gelatine coated to make it remember the shape. In this pre-prepared double knot, there are to 3D open and unfastened loops that turn clockwise and are arranged in a series and the "C" section of the curve 2 ties on them ; this "C" section is left-handed and its bottom curve ends before the central area of the first loop 1_.

A surgical suture thermally treated d uring fabrication of 3D open and unfastened loops and "C" curve 2 with a shape memory can be used as an alternative.

Example 2

This example of a particular application of the invention describes the shaped suture for intracorporeal knotting in the second version to make the double knot as shown in figure 2. Elastic surgical suture with shape memory is shaped to form two 3D open and unfastened loops finished with a "C" curve 2. The first loop 1 is equipped with a surgical needle 3. The surgical suture used is gelatine coated to make it remember the shape. I n this pre-prepared double knot, there are two 3D open and unfastened loops 1 that turn anticlockwise and are arranged in a series and the "C" section of the curve 2 ties on them ; this "C" section is right- handed and its upper curve ends before the central area of the first loop 1_.

A surgical suture thermally treated during fabrication of 3D open and unfastened loops and "C" curve 2 with a shape memory can be used as an alternative.

Example 3

This example of a particular application of the invention describes the shaped surgical suture for intracorporeal knotting in the third modification to make the slip knot as shown in figure 3. Elastic surgical suture with shape memory is shaped to form two 3D open and unfastened loops 1 finished with a "C" curve 2. The first loop 1 is equipped with a surgical needle 3. The surgical suture used is gelatine coated to make it remember the shape. I n this pre-prepared slip knot, there are two 3D open and unfastened loops 1_ that are arranged parallelly and the first loop 1_ turns to left and the second loop turns to the right and the "C" section of the curve 2 ties on them ; the bottom curve of this "C" section ends before the central area of the first loop 1_. A surgical suture thermally treated d uring fabrication of 3D open and unfastened loops 1 and "C" curve 2 with a shape memory can be used as an alternative.

Example 4

This example of a particular application of the invention describes the method of fabrication of the shaped surgical suture for intracorporeal knotting for stitching . In the first case, the elasticity and shape memory of the surgical suture is the result of thermal treatment of the surgical suture. The surgical suture is thermally treated ; the surgical suture is reeled on a 3D device of the open and unfastened loops and "C" curve of the double or slip knot and is exposed to the temperature of up to 90°C for 1 minute at the most.

Example 5

This example of a particular application of the invention describes the method of fabrication of the shaped surgical sutu re for intracorporeal knotting for stitch ing. I n the second case, the elasticity and shape memory of the surgical suture is the result of gelatine coating of the surgical suture. The surgical suture is coated with liquid gelatine and then reeled on the 3D device of open and unfastened loops and "C" curve of the double or slip knot until the gelatine solidifies.

I ndustrial Applicability

The shaped surgical suture for intracorporeal knotting and the method of its fabrication accord ing to the invention is applicable particularly in the mini-invasive endoscopic surgery.

Claims

PATE NT C LAI MS

1 . The shaped surgical suture for intracorporeal knotting is characterised by being shaped from the elastic surgical suture with shape memory to form two 3D open and unfastened loops (1 ) finished with a "C" curve (2) whereas the first loop (1 ) is equipped with a surgical needle (3).

2. The shaped surgical suture for intracorporeal knotting under claim 1 is characterised in the version of the double knot by two 3D open and unfastened loops ( 1 ) that turn clockwise and are arranged in a series whereas the "C" curve (2) is left-handed and the bottom curve ends before the central area of the first loop (1 ).

3. The shaped surgical suture for intracorporeal knotting under claim 1 is characterised in the version of the double knot by two 3D open and unfastened loops (1 ) that turn anticlockwise and are arranged in a series whereas the "C" curve (2) is right-handed and the upper curve ends before the central area of the first loop (1 ).

4. The shaped surgical suture for intracorporeal knotting under claim 1 is characterised in the version of the slip knot by two 3D open and unfastened loops ( 1 ) that are arranged parallelly whereas the first loop (1 ) turns to the left and the second loop ( 1 ) turns to the right and the bottom curve of the "C" curve (2) ends before the central area of the first loop (1 ).

5. The shaped surgical suture for intracorporeal knotting under at least one of the claims 1 - 4 is characterised by being gelatine coated .

6. The method of fabrication of the surgical suture for intracorporeal knotting is characterised by the fact that the elasticity and shape memory of the surgical suture is the result of thermal treatment of the surgical suture or the result of gelatine coating of the surgical suture.

7. The method of fabrication of the shaped surgical suture for intracorporeal knotting under claim 6 is c haracterised by the fact that the elasticity and shape memory of the surgical suture is the result of such thermal treatment of the surgical suture where the surgical suture is reeled on a 3D device of open and unfastened loops and "C" curve of the double or slip knot and is exposed to the temperature not exceeding 90°C for 1 minute at the most.

8. The method of fabrication of the shaped surgical suture for intracorporeal knotting under claim 6 is cha racterised by the fact that the elasticity and shape memory of the surgical suture is the result of such gelatine coating of the surgical suture where the surgical suture is gelatine coated and then reeled on a 3D device of open and unfastened loops and "C" curve of the double or slip knot left to solidify.