WO2022077419A1

WO2022077419A1 - Device for knotting by tube pushing for medical suture thread

Info

Publication number: WO2022077419A1
Application number: PCT/CN2020/121413
Authority: WO
Inventors: 杜方超; 吴文毅; 陈贵华
Original assignee: 迈磊医疗器材股份有限公司
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2022-04-21
Also published as: CN114760934A

Abstract

A device for knotting by tube pushing for a medical suture thread. A sliding tube (11) is slidably sleeved in an outer tube (10); the front end of the sliding tube (11) extends out of the outer tube (10) to form a tying part (111); a tying thread (20) runs through the sliding tube (11) and is tied on the tying part (111) to form a slip knot (21), and a binding loop (22) is formed between the extending part and the slip knot (21); a knotting segment (31) different from the tying thread (20) is provided in a manner of threading through the loop; when the tying thread (20) is pulled backwards, the tying part (111) is moved into the outer tube (10), the binding loop (22) becomes smaller, the knotting segment (31) is folded such that a folded end (311) of the knotting segment (31) is received in the front end of a threading hole (112), and the slip knot (21) falls off from the tying part (111) and moves across the binding loop (22) to be tightly bound at the folding position of the knotting segment (31) so that a thread knot structure (A) is formed. The formation of the structure (A) allows a user to make a thread knot easily and quickly at the knotting segment (31) of the thread, and thus the device is suitable for operation of suturing surgical wounds or making knots of various threads.

Description

Push tube knotting device for medical sutures

technical field

The invention relates to a knotted structure, in particular to a push tube knotting device for medical sutures.

Background technique

When the existing string is passed through the object and fixed, it is usually knotted at the end of the string to form a head or fixed knot to fasten the end of the string. For example, when a wound is sutured with a surgical suture, the suture needle is used to drive the surgical suture to cross both sides of the wound tissue and tie a knot at the end of the suture operation, so that the surgical suture can tighten the tissue on both sides of the wound, so that the The efficacy of wound healing.

In the above-mentioned method for fixing the rope, since the end of the rope needs to be knotted to form the head, the tying operation is complicated and time-consuming. When it needs to be fast, especially when it is used for surgical suturing of wounds, the operation of fixing the rope becomes less efficient, and it is necessary to improve the method to simplify the method of knotting the ends of the rope to form the head, and to speed up the operation of the surgical suturing of the wound.

SUMMARY OF THE INVENTION

Since the existing rope needs a complicated tying operation when forming a head or tying a knot at the end, the knotting process is particularly inefficient when used in the closure of surgically sutured wounds. For this reason, the present invention enables the user to use the slip knot to form a thread end structure on the wire when using the present invention by forming the structure of the slip knot in advance, so as to achieve the knotting effect of quickly forming the thread end on the wire.

In order to achieve the above-mentioned purpose of the invention, the present invention provides a push tube knotting device for medical sutures, which is provided with an outer tube, and a sliding tube is slidably inserted in the outer tube, and the front end of the sliding tube passes through the outer tube. The outer tube forms a set portion, a threading hole is formed through the sliding tube in the axial direction, and a tie wire is provided. A hole is formed in the part of the tie wire between the slip knot and the front end of the threading hole, and a knotted line segment different from the tie wire is inserted into the ferrule, and the tie is pulled backward. The rear end of the wire is tied, and the ferrule folds more than one knotted wire segment to form a folded end that sinks into the front end of the threading hole, wherein the knotted wire that enters the sleeve part is paired due to the folded back. A stacked polygon formed with the tie wire is accommodated in an inner circumference of the section of the sleeve portion.

As a further improvement of the present invention, the stacked polygon is a pentagon.

As a further improvement of the present invention, the stacked polygon is a hexagon.

As a further improvement of the present invention, wherein two or more knotted line segments described above are pierced through the ferrule, and the two or more knotted line segments are the same knotted wire that is wound through the ferrule twice or more. part.

As a further improvement of the present invention, the compressive deformation of a projected cross-sectional area of the stacked polygon is between 3% and 30%.

As a further improvement of the present invention, part of the tying wire is fixed to the outer tube.

As a further improvement of the present invention, the packed polygon is a closest packed polygon.

As a further improvement of the present invention, the stacked polygon may include at least one segment of an arc edge.

Compared with the prior art, the beneficial effects of the present invention are:

When using the present invention, the knotted line segment to be knotted is passed through the ferrule, and then the tying wire is pulled back, so that the thread head structure can be easily formed at the reverse fold of the knotted line segment. The operation of tying a knot at the end of the surgical suture wound or forming the head of various wires can speed up the operation of the surgical suture wound or quickly complete the knotting operation after various wires are tied.

Description of drawings

Fig. 1 is the schematic diagram of the first preferred embodiment of the present invention in which the knotted wire is inserted into the ferrule;

2 to 4 are schematic diagrams of each stage of the knotting process according to the first preferred embodiment of the present invention;

5 is a schematic diagram of the second preferred embodiment of the present invention, a schematic diagram of threading a knotted wire in a ferrule;

6 to 8 are schematic diagrams of each stage of the knotting process according to the second preferred embodiment of the present invention;

FIG. 9 is a schematic diagram of the third preferred embodiment of the present invention, where the knotted wire is inserted into the ferrule;

Fig. 10 is the schematic diagram of another preferred embodiment of the present invention's slip-knot type;

11 to 15 are schematic diagrams showing the relationship between the cross-sectional dimensions of the sliding tube and different wires according to the preferred embodiment of the present invention;

16 is a schematic diagram of the cross-sectional relationship between the sliding tube and different wires after deformation according to the preferred embodiment of the present invention;

17 is a schematic diagram of the cross-sectional relationship between the sliding tube and different wires after deformation according to another embodiment of the present invention.

Symbol Description:

10 outer tube

11 Slide Tube

111 Set Department

112 Threading holes

20 tie wire

201 tied wire stranded wire

21 Slip Knot

22 bunch ferrules

30 knotted wire

301 Knotted Wire Stranded Wire

31 Knotted line segment

311 Reflex end

A wire head structure

Organization B

X Stacked Polygons

Y arc side

Detailed ways

In order to understand the technical features and practical effects of the present invention in detail, and to implement it according to the contents of the description, the preferred embodiments shown in the drawings are further described in detail as follows.

As shown in the first preferred embodiment shown in FIG. 1 to FIG. 4 , the present invention provides a push tube knotting device for medical sutures, which is provided with an outer tube 10 , the outer tube 10 is a straight tube body, in the A sliding tube 11 is slidably inserted in the outer tube 10. The sliding tube 11 is a straight tube body and the front end passes through the outer tube 10. A threading hole 112 is formed in the pipe 11 along the axial direction; a tying wire 20 is provided, and the wire body is wound around the sleeve 111 to form a double loop sling 21 and the rear end penetrates the threading hole 112, and is tied to the tying part 111. The part of the wire 20 between the slip knot 21 and the front end of the threading hole 112 forms a bundle of ferrules 22 .

A knotting wire 30 is provided. In this preferred embodiment, the tying wire 20 and the knotting wire 30 are surgical sutures of the same size. In other preferred embodiments, the tying wire 20 and the knotting wire The knot wire 30 may be other types of string, not limited to surgical sutures. A knotted wire segment 31 is formed at the predetermined knotted portion of the knotted wire 30, and the knotted wire segment 31 is inserted into the ferrule 22, and then the rear end of the tied wire 20 is pulled backwards. The rear end of the wire tie 20 is pulled backward to shrink the size of the ferrule 22 and drive the sleeve portion 111 to move into the outer tube 10 in a way that interferes with the front end of the sliding tube 11 . At this time, the ferrule 22 is tightened. Tie the knotted line segment 31 across the outer tube 10 and the front end of the sliding tube 11, fold the knotted line segment 31 to form a folded end 311, and make the folded end 311 sink into the threading hole 112 In the front end of the knot, the slip knot 21 falls off from the sleeve part 111 and crosses the ferrule 22 forward in the process, and the slip knot 21 is tightly tied at the reverse fold of the knotted line segment 31 to form a thread end structure A, and finally according to It is required to selectively cut the front end of the tying wire 20 and the excessively long part of the front end of the knotted wire 30 .

The folded end 311 of the knotted wire segment 31 of the present invention needs to sink into the front end of the threading hole 112 before forming the wire end structure A. Therefore, preferably, the diameter size of the front end of the threading hole 112 in the present invention needs to be larger than the width size sufficient for the tying wire 20 and the folded end 311 to pass through; and in order to prevent the thread end structure A from falling into the In the threading hole 112, the size of the front end of the threading hole 112 needs to be smaller than the width of the tying wire 20 wrapped around the tie wire 20 together with the inversion of the knotted wire segment 31.

In addition to the above-mentioned first preferred embodiment of the present invention, the slip knot 21 is tightly tied at the reverse fold of the knotted line segment 31 of a knotted wire 30 to form the thread end structure A, and the slip knot 21 can also be tightly tied between two The above-mentioned knotted wires 30 are folded to form the wire end structure A, as shown in the second preferred embodiment of the present invention as shown in FIG. 5 to FIG. 8 .

The second preferred embodiment is the same as the first preferred embodiment with respect to the structure of the outer tube 10 , the sliding tube 11 , and the tying wire 20 . In the second preferred embodiment, two knotted wires 30 are provided, and a knotted wire segment 31 is respectively formed at the predetermined knotted position of the two knotted wires 30, and the two knotted wire segments 31 are passed through the ferrule. 22, then pull the rear end of the tie wire 20 backwards, with the rear end of the tie wire 20 being pulled backwards, the size of the ferrule 22 is closed and the front end of the sliding tube 11 is driven to drive the The sleeve portion 111 is moved into the outer tube 10, and the ferrule 22 is fastened on the knotted line section 31 that spans the outer tube 10 and the front end of the sliding tube 11, and the two knotted line sections 31 are folded back. And a reversed end 311 is formed, so that the reversed end 311 sinks into the front end of the threading hole 112. During the process, the slip knot 21 falls off the sleeve part 111 and crosses the ferrule 22 forward, and the slip knot 21 is tightened. The bundle forms a line end structure A at the inversion of the two knotted line segments 31 .

In addition to the above-mentioned second preferred embodiment of the present invention, the slip knot 21 is tightly bundled at the reverse folds of the knotted line segments 31 of two different knotted wire rods 30 to form the thread head structure A. The above two or more knotted line segments 31 It can also be from the same knotted wire 30, the third preferred embodiment of the present invention as shown in FIG. twenty two.

The third preferred embodiment is the same as the first and second preferred embodiments with respect to the structure of the outer tube 10 , the sliding tube 11 , and the tying wire 20 . In the second preferred embodiment, a knotted wire 30 is provided, and the knotted wire 30 is cross-sutured on both sides of the wound tissue B. When the wound is sutured and needs to be knotted at the end of the knotted wire 30, the After the knotted wire 30 is passed through the ferrule 22 for the first time, it first passes through the tissue B on both sides of the wound and then passes through the ferrule 22 for the second time, and the knotted wire 30 passes through the bundle twice. The predetermined knotted portion of the ferrule 22 is the two knotted line segments 31, and then the operations below the rear end of the tying wire 20 are pulled back because they are the same as those in the second preferred embodiment, so they will not be repeated here. .

In addition to the above-mentioned first to third preferred embodiments of the present invention, the slip knot 21 is a double-turn slip-knot, the slip-knot 21 pre-wound on the sleeve part 111 can also be a single-turn or three-turn slip-knot, such as The slip knot 21 shown in FIG. 10 is a three-turn slip knot, and the number of turns of the slip knot 21 in the present invention is not limited to the type in the above preferred embodiment.

Further, the free end of the tying wire 20 can be fixed to the outer tube 10 , which helps to prevent the loose knot 21 from loosening when the section of the tying wire 20 placed in the sliding tube 11 is pulled toward the inside of the tube. Or, preferably, a tensioned bonding relationship is formed between the tying wire 20 and the outer tube 10, for example, an elastic component is fixedly combined between the tying wire 20 and the outer tube 10 to provide the tie wire 20 and the outer tube 10. The tension required for the tying process of the binding wire 20 to the slip knot 21, the elastic component can be a spring, a silicone rope, a rubber rope, or the like. The effect of fixing the free end of the tying wire 20 is that the user in the process of applying the knot can reduce the difficulty of applying, and at the same time, it can reduce the probability of the finished knot being loosened.

The above statement that the tying wire 20 and the knotting wire 30 enter into the sliding tube 11 after being knotted, the diameter of the front end of the threading hole 112 needs to be larger than the width of the tying wire 20 and the knotting wire 30. The space surrounded by an inner circumference of the sleeve portion 111 should be able to accommodate at least a stacking polygon formed by the pair of the knotted wires 30 and the tied wires 20 , and the stacking polygon is the position where all the

wires

20 and 30 are at the most Under close packing, the knotted wire 30 and each outermost point of each tied wire 30 form a polygon. Please refer to FIG. 11 as an example, the wire diameter of the tying wire 20 is the same as the wire diameter of the knotted wire 30 that enters the sleeve portion 111 after being folded in pairs. Therefore, the tying wire 20 is paired with the folded wire 20 . The knotted wires 30 enter the sleeve portion 111 of the sliding tube 11 together, and the stacking polygon X formed by the

wires

20 and 30 is an equilateral triangle without considering the deformation of the

wires

20 and 30 due to compression. , the stacking polygon X should be at least tangent to the inner circumference.

Please refer to FIG. 12 , the two tying wires 30 and one tying wire 20 after being folded enter the sleeve portion 111 , wherein the diameter of the tying wire 30 is smaller than the tying wire 20 , so that the stacking polygon X is an isosceles triangle.

Please refer to FIGS. 13 and 14 , which show that two strands of knotted wires 30 are inserted into the ferrule 22 , so that the tied wires 20 are pulled into the knotted wires 30 to form the stacked polygon X as a pentagon. 13 shows an example in which the wire diameters of the knotted wire 30 and the tie wire 20 are the same, and FIG. 14 shows that the wire diameter of the knotted wire 30 is smaller than that of the tie wire 20 .

Please refer to FIG. 15 , which shows that three strands of the knotted wire 30 pass through the ferrule 22 , so that the stacked polygon X is hexagonal.

Further, the materials of the

wires

20 and 30 can be selected to enter the sleeve portion 111 to generate deformation, wherein the compression deformation of a projected cross-sectional area of the stacked polygon is preferably between 3% and 30%, which is beneficial to reduce the Risk of slip knot 21 loosening and failure in the knotting process.

Referring to FIGS. 16 and 17 , when the

wires

20 and 30 enter the sheathing portion 111 , the stacked polygons generated by the

wires

20 and 30 change by 10% and 30% respectively, wherein FIG. 17 shows the knotted wires 30 and the tying wire 20 are both a stranded wire, the tying wire 30 is formed by combining three strands of tying wire strands 301, and the tying wire 20 is formed by twisting three strands of tying wire strands 201, Therefore, by selecting the material of the tying wire 20 and the knotting wire 30, the change of the projected cross-sectional area between 10% and 30% is the best for the knotting effect and the degree of difficulty in loosening.

Further, the above-mentioned stacked polygon may be a closest-packed polygon.

Further, the stacking polygon may include at least a segment of an arc-shaped side Y, which is correspondingly generated when the tying wire 20 or the knotting wire 30 enters the sleeve portion 111 and compresses the inner surface of the sleeve portion 111 . Local cross-sectional shape changes.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of the claims of the present invention. All other equivalent changes or modifications without departing from the spirit disclosed in the present invention shall be included in the present invention. within the scope of the patent application.

Claims

A push-tube knotting device for medical sutures, characterized in that an outer tube is provided, a sliding tube is slidably inserted in the outer tube, and the front end of the sliding tube penetrates out of the outer tube to form a set of part, a threading hole is formed through the sliding tube in the axial direction, and a tie wire is arranged, and the wire body is wound around the sleeve part to form a slipknot with more than a single turn and the rear end penetrates the threading hole, and the tie The part of the wire between the slip-knot and the front end of the threading hole forms a bundle of ferrules, and more than one knotted line segment different from the tie wire is passed through the bundle ferrule, and the rear end of the tie wire is pulled backwards, The ferrule folds more than one knotted wire segment to form a folded end that sinks into the front end of the threading hole, wherein the knotted wire and the tied wire entered into the sleeve part by the folded back. The formed stacked polygon is accommodated in an inner circumference of the section of the sleeve portion.
The push tube knotting device for medical sutures according to claim 1, wherein the stacked polygon is a pentagon.
The push tube knotting device for medical sutures according to claim 1, wherein the stacked polygon is a hexagon.
The push tube knotting device for medical sutures as claimed in claim 1, wherein more than two knotted line segments are inserted into the ferrule, and the two or more knotted line segments are The portion where the same knotted wire is wound more than twice through the ferrule.
The push-tube knotting device for medical sutures as claimed in claim 4, wherein the compression deformation of a projected cross-sectional area of the stacked polygon is between 3% and 30%.
The push tube knotting device for medical sutures as claimed in claim 4, wherein a portion of the tying wire is fixed to the outer tube.
The push tube knotting device for medical sutures as claimed in claim 5, wherein the packed polygon is a closest packed polygon.
The push-tube knotting device for medical sutures as claimed in claim 5, wherein the stacked polygon can include at least one segment of an arc edge.
The push tube knotting device for medical sutures as claimed in claim 1, wherein more than two knotted line segments are inserted through the ferrule, and the two or more knotted line segments are It is the part where the same knotted wire is wound through the ferrule more than twice.