KR20180074398A - Surgical Vessel ligature clip - Google Patents

Abstract

The present invention relates to a surgical clip which will hydrolyze inside a body as a predetermined time goes by, thereby giving no side effects such as inflammation, and which has increased strength and excellent ligation force. The surgical clip comprises: a first leg; a second leg; a hinge unit connecting the first leg to the second leg; a first locking device disposed at a terminal of the first leg; a second locking device disposed at a terminal of the second leg; a first rib formed on the external side surface of the first leg; and a second rib formed on the external side surface of the second leg. The first rib and the second rib are not connected to each other, the first leg and the second leg rotate around the hinge unit to make the inner side surface of the first leg face the inner side surface of the second leg, and the first locking device and the second locking device can be joined to each other.

Description

Surgical clip for ligating blood vessels {Surgical Vessel ligature clip}

TECHNICAL FIELD The present invention relates to a surgical clip capable of accurately ligating a tubular body structure such as a blood vessel during surgical operation. More specifically, after a certain period of time, hydrolysis in the body results in no side effects such as inflammation, To a surgical clip having excellent ligation strength.

To prevent complications such as excessive bleeding and infection during surgery, the surgeon needs to ligate tubular tissue such as blood vessels or lymphatic vessels. In addition, the surgeon must ligate the blood vessels that are connected during the removal of the tumor, such as cancer, or removal of the organ, before tissue separation. For this ligation, the surgeon can use the suture to suture the surrounding area of the surgical vessel, or clips it using a clip. However, there is a limitation in that sufficient suture space is required for suture using suture, and the operation time required for suturing is long, and the sutured thread may be loosened. Recently, a ligature using a vascular ligation clip has been used.

Vascular ligation clips used for the above purposes include metal clips, non-degradable polymer clips, and biodegradable polymer clips. Metal clips have a U-shaped compact design and are made of Titanium, Tantalum and Stainless-steel. However, the above metal clips have a problem that not only interference occurs in imaging devices such as CT and MRI but also there is a high possibility that the ligature is released after ligature.

To solve the problem of metal clips, a non-degradable polymer clip using a material such as polyacetal has been proposed. Examples include ligature clips of U.S. Patent No. 4,834,096 and U.S. Patent No. 5,062,846. However, such non-degradable polymeric clips remain in the body even after the operation, which may cause complications such as inflammation.

Biodegradable polymeric clips made of materials such as lactide, glycolide and p-dioxanone can solve the problem of metal clips because there is no image interference, And hydrolysis is less likely to cause complications. Examples of prior art related thereto are Korean Patent No. 10-1377429 and Korean Patent Laid-Open Publication No. 10-2016-0115163. However, the clip made of such a material has a large rigidity and a small stability (floating property), which can easily break when it is ligated. In addition, in the structure in which the ribs are formed in the hinge portion, there is a risk that the ribs of the hinge portion affect the folding at the time of ligation, so that the distance between the clip legs after ligation may occur, which may cause a problem of weakening the ligation effect.

U.S. Patent No. 4834096 (May 30, 1989) U.S. Patent No. 5,062,846 (November 5, 1991) Korean Patent No. 10-1377429 (March 26, 2014) Korean Patent Publication No. 10-2016-0115163 (October 6, 2016)

The purpose of the surgical clip according to one embodiment of the present invention is to solve the above-mentioned problems of the prior art. As the strength is increased, there is no breakage of clip when ligating a tissue such as a blood vessel, And to provide a surgical vascular ligation clip that does not slip or release ligation for a sufficient time after ligation, and dissolves and disappears in the body after a certain period of time.

The objects of the present invention are not limited to those mentioned above, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

A surgical clip according to an embodiment of the present invention includes a first leg; A second leg; A hinge portion connecting the first leg and the second leg; A first locking device located at an end of the first leg; A second locking device located at an end of the second leg; A first rib formed on an outer surface of the first leg; And a second rib formed on an outer surface of the second leg, wherein the first rib and the second rib are not connected to each other, and the first leg and the second rib are formed so that the inner surface of the first leg and the inner surface of the second leg face each other, The second leg rotates about the hinge portion, and the first locking device and the second locking device can be engaged with each other.

The width of the first rib and the width of the second rib are preferably equal to or smaller than the width of the first leg and the width of the second leg, respectively.

The width of the first rib and the width of the second rib preferably have a value of 0.1 to 1.0 times the width of the first leg and the width of the second leg, respectively.

The thickness of the first rib and the thickness of the second rib are preferably equal to or less than the thickness of the first leg and the thickness of the second leg, respectively.

The thickness of the first rib and the thickness of the second rib preferably have a value of 0.5 to 1.0 times the thickness of the first leg and the thickness of the second leg, respectively.

The surgical clip includes a first leg projection located at the end of the first leg and projecting from the side; And a second leg protrusion located at the end of the second leg and projecting from the side, wherein the first rib is positioned to be spaced apart from the first leg projection, and the second rib is positioned to be spaced apart from the second leg projection.

The material of the surgical clips is PLGA (Poly-lactic-co-glycolic acid), PDO (Polydioxanone), PLDLLA (Poly-L, DL-lactide), PDLLA (Poly- caprolactone, PLLA (Poly-L-lactide), and polyglyconate (polyglyconate).

The material of the surgical clip is preferably a composite of a biodegradable polymer and calcium phosphate (Calclium Phopshate).

The calcium phosphate is preferably at least one selected from the group consisting of hydroxyapatite and tri-calcium phosphate.

The surgical clip according to an embodiment of the present invention has a small strength and a small number of problems such as clip breakage at the time of ligation and is excellent in ligation strength and does not cause slipping and ligation for a sufficient time after ligation, And is absorbed by hydrolysis in the body to solve problems such as inflammation and complications.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

1 is a perspective view of a surgical clip according to an embodiment of the present invention.
2 is a right side view of a surgical clip according to an embodiment of the present invention.
3 is a front view of a surgical clip according to an embodiment of the present invention.
4 is a rear view of a surgical clip according to an embodiment of the present invention.
5 is a view showing a state in which a surgical clip according to an embodiment of the present invention is attached to a ligation mechanism.
6 is a view showing a state in which a surgical clip according to an embodiment of the present invention ligates a tubular tissue.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 is a perspective view of a surgical clip according to an embodiment of the present invention, FIG. 2 is a right side view of a surgical clip according to an embodiment of the present invention, FIG. 3 is a perspective view of a surgical clip according to an embodiment of the present invention Figure 4 is a rear view of a surgical clip according to an embodiment of the present invention. FIG. 5 is a view showing a state in which a surgical clip according to an embodiment of the present invention is attached to a ligation mechanism, FIG. 6 is a view showing a state in which a surgical clip according to an embodiment of the present invention ligates a tubular tissue, FIG.

The surgical clip 100 according to an embodiment of the present invention includes a first leg 110, a second leg 120, a hinge 130, a first locking device 140, a second locking device 150, A first rib 160; And a second rib (170).

The first leg 110 and the second leg 120 are each a curved elongated member and the first leg 110 includes an outer surface 111, an inner surface 112 and a side surface 113 The second leg 120 includes an outer surface 121, an inner surface 122, and a side surface 123. It is preferable that the first leg 110 and the second leg 120 have an asymmetrical shape.

The hinge 130 connects the first leg 110 and the second leg 120. [ The hinge part 130 includes an inner connecting part 131 and an outer connecting part 132 spaced from each other and the inner connecting part 131 connects the inner side surfaces of the first leg 110 and the second leg 120 And the outer connecting part 132 connects the outer side surfaces of the first leg 110 and the second leg 120. [ Thus, a crescent-shaped hinge groove 133 is formed between the inner connection part 131 and the outer connection part 132. [ The R value of the outer connection part 132 is larger than the R value of the inner connection part 131 and the thickness of the inner connection part 131 is smaller than the thickness of the outer connection part 132. [

The first leg 110 and the second leg 120 are positioned at the center of the hinge 130 so that the inner surface 112 of the first leg 110 and the inner surface 122 of the second leg 120 face each other. .

 When the first leg 110 and the second leg 120 are rotated to come close to each other about the hinge 130, the inner connecting part 131 is folded toward the hinge groove 133, And is folded together with the outer connection portion 132. [ At this time, the first locking device 140 and the second locking device 150 complementarily engage and provide a ligation force.

The first locking device 140 is located at the end of the first leg 110 and the second locking device 150 is located at the end of the second leg 120. The first locking device 140 has a bent hook portion 141 like a hook and the second locking device 150 has a hook portion 151 in the form of a triangular column to which the hook portion 141 is hooked.

After the first leg 110 and the second leg 120 are rotated to come close to each other about the hinge 130, the hook 141 is caught by the latch 151, By joining the two legs 120, ligation is enabled.

The first leg protrusion 142 is provided at the beginning of the hook portion 141 of the first locking device 140 and the second leg protrusion 152 is provided at the locking portion 151 of the second locking device 150. [ .

The first leg protrusion 142 is a cylindrical structure protruding from the outer side surface 111 and the side surface 113 of the first leg 110. The second leg protrusion 152 is a protrusion of the second leg 120, Are cylindrical members that are located on both sides of the outer side surface 151 and protrude from the outer side surface 121 and the side surface 123. The second leg protrusion 152 is formed with a triangular prism projection 153 protruding toward the first leg 110.

A surgical clip according to a preferred embodiment of the present invention uses an applier for ligating an actual blood vessel and tissue and is fitted in the groove of the ligature mechanism 200 as shown in FIG. 100 can be mounted on the ligation mechanism 200.

The inner side surface 112 of the first leg 110 and the inner side surface 122 of the second leg 120 have imaginary center lines AA along the longitudinal direction of the legs, Like ligation protrusions 180 are arranged asymmetrically to prevent the slipping of the surgical clip 100. The ligation ligaments 180 are arranged asymmetrically in the asymmetrical manner.

The first ribs 160 may extend along the longitudinal direction of the first legs 110 on the outer surface 111 of the first leg 110 and the second ribs 170 may extend along the longitudinal direction of the second legs 120 The second leg 120 may be formed to extend along the longitudinal direction of the second leg 120 on the outer surface 121 of the second leg 120. Here, the first ribs 160 and the second ribs 170 may be integrally formed with the first legs 110 and the second legs 120.

The first rib 160 and the second rib 170 are not connected to each other. That is, the first rib 160 and the second rib 170 do not cover the outer connecting portion 132 of the hinge portion 130. Accordingly, rotation of the first leg 110 and the second leg 120 with respect to the hinge 130 is facilitated.

The first rib 160 is spaced apart from the first leg protrusion 142 and the second rib 170 is spaced apart from the second leg protrusion 152. When the first rib 160 and the second rib 170 are connected to the first leg protrusion 142 and the second leg protrusion 152 respectively and the first leg protrusion 142 And the second leg protrusion 152 can not be inserted.

The width W1-2 of the first rib 160 and the width W2-2 of the second rib 170 are set such that the width W1-1 of the first leg 110 and the width W2-1 of the second leg 120 Is preferably equal to or smaller than the width W2-1. The width W1-2 of the first rib 160 and the width W2-2 of the second rib 170 are equal to the width W1-1 of the first leg 110 and the width W2-1 of the second leg 120, And has a value of 0.1 to 1.0 times the width W2-1.

The thickness T1-2 of the first ribs 160 and the thickness T2-2 of the second ribs 170 are respectively equal to the thickness T1-1 of the first legs 110 and the thickness T1-1 of the second legs 120 Is preferably equal to or smaller than the thickness (T2-1) The thickness T1-2 of the first ribs 160 and the thickness T2-2 of the second ribs 170 are respectively equal to the thickness T1-1 of the first legs 110 and the thickness T1-2 of the second legs 120, And has a value of 0.5 to 1.0 times the thickness (T2-1).

The ligation failure due to the collision between the ligature mechanism 200 and the clip 100 can be prevented by the numerical range of the width and the thickness of the first rib 160 and the second rib 170.

The shapes of the first rib 160 and the second rib 170 may be a rectangular shape, a cylindrical shape, or a variety of shapes. The first ribs 160 and the second ribs 170 increase the strength of the first legs 110 and the second legs 120 so as to reinforce the ligation force and reduce the breakage rate during ligation.

The material of the surgical clip 100 according to an embodiment of the present invention is a biodegradable polymer material, and is absorbed after a certain period of time in the body, so that there is no problem such as a foreign material problem and complications due to inflammation. Examples of the biodegradable polymer material include PLGA (Poly-lactic-co-glycolic acid), PDO (Polydioxanone), PLDLLA (Poly-L, DL-lactide), PDLLA (Poly- -caprolactone, PLLA (Poly-L-lactide), and polyglyconate may be selected, and the biodegradable polymer may be a composite of calcium phosphate (Calclium Phopshate) And calcium phosphate may be selected from one or more of hydroxyapatite and tri-calcium phosphate. Preferably, it is PLLA (Poly-L-lactide).

While the present invention has been described in connection with certain exemplary embodiments, it will be understood by those skilled in the art that various changes may be made without departing from the scope of the present invention.

100: Surgical clip
110: first leg 111: outer side
112: inner side 113: side
120: second leg 121: outer side
122: inner side 123: side
130: hinge part 131: inner connection part
132: outer connecting portion 133: hinge groove
140: first locking device 141: hook portion
142: first leg protrusion
150: second locking device 151:
152: second leg protrusion 153: protrusion
160: first rib 170: second rib
180: Ligation protrusion 200: Ligation apparatus
W1-1: Width of the first leg W1-2: Width of the first rib
W2-1: width of the second leg W2-2: width of the second rib
T1-1: thickness of the first leg T1-2: thickness of the first rib
T2-1: thickness of the second leg T2-2: thickness of the second rib
AA: imaginary center line

Claims (9)

A first leg;
A second leg;
A hinge portion connecting the first leg and the second leg;
A first locking device located at an end of the first leg;
A second locking device located at an end of the second leg;
A first rib formed on an outer surface of the first leg; And
And a second rib formed on an outer surface of the second leg,
The first rib and the second rib are not connected to each other,
The first leg and the second leg are rotated about the hinge portion so that the inner surface of the first leg and the inner surface of the second leg face each other and the first locking device and the second locking device can be engaged with each other. Surgical clip.
The method according to claim 1,
The width of the first rib and the width of the second rib being equal to or less than the width of the first leg and the width of the second leg, respectively.
The surgical clip according to claim 2, wherein the width of the first rib and the width of the second rib each have a value of 0.1 to 1.0 times the width of the first leg and the width of the second leg.
The method according to claim 1,
Wherein the thickness of the first rib and the thickness of the second rib are equal to or less than the thickness of the first leg and the thickness of the second leg, respectively.
The surgical clip according to claim 4, wherein the thickness of the first rib and the thickness of the second rib each have a value of 0.5 to 1.0 times the thickness of the first leg and the thickness of the second leg, respectively.
The surgical clip of claim 1,
A first leg protrusion located at the end of the first leg and projecting from the side; And
Further comprising a second leg protrusion located at an end of the second leg and projecting from the side,
The first rib is positioned to be spaced apart from the first leg projection,
And the second rib is spaced apart from the second leg projection.
The method according to claim 1,
The material of the surgical clips is PLGA (Poly-lactic-co-glycolic acid), PDO (Polydioxanone), PLDLLA (Poly-L, DL-lactide), PDLLA (Poly- wherein the biodegradable polymer is at least one biodegradable polymer selected from the group consisting of caprolactone, PLLA (Poly-L-lactide), and polyglyconate.
The method according to claim 1,
Wherein the material of the surgical clip is a composite of biodegradable polymer and calcium phosphate (Calclium Phopshate).
9. The method of claim 8,
Wherein the calcium phosphate is at least one selected from the group consisting of Hydroxyapatite and Tri-calcium Phosphate.

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