KR102254131B1 - Multistage polymer clips remover - Google Patents

Abstract

The present invention relates to a polymer clip remover for temporarily ligating a blood vessel and a conduit during a surgical operation or removing an incorrectly ligated polymer clip from the blood vessel and a conduit, comprising: a pressure release unit for releasing a locked state of the clip, and a pressure release unit It is composed of a handle part to operate and a connecting rod connecting the pressure release part and the handle part, and the pressure release part is a pair of jaws having mutually opposing operation surfaces that are folded or spread around the hinge axis according to the operation of the handle part. However, the operation surface of the jaw for pressing the clip to be removed is characterized in that it has a multi-stage gradient.

Description

Multi-stage polymer clip remover {MULTISTAGE POLYMER CLIPS REMOVER}

The present invention relates to a polymer clip remover for temporarily ligating blood vessels and conduits during a surgical operation or removing an incorrectly ligated polymer clip from the blood vessels and conduits, and more specifically, to a jaw part structure of the polymer clip remover. will be.

In the past, leaks of blood or body fluid that occur during surgical operations have been tied using sutures or ligation using a U-shaped symmetric titanium alloy clip, but recently, a polymer clip 100 made of a polymer resin is mainly used.

The reason for this is that the titanium alloy clip is often not able to maintain a certain tension because the ligating force is limited by one deformation, but the polymer clip 100 has appropriate modified physical properties unlike the titanium alloy clip. This is because it has phosphorus repellency and the stability of ligation has been sufficiently verified with the locking function using it.

The polymer ligation clip 100 has a shape corresponding to the arm leg 110 so that the inner surface is folded around the arm leg 110 and the hinge 130 forming a gentle curve, as shown in FIG. 1. The branch is composed of a male leg 120, an arm head 111 formed on the head of the arm leg 110, and a male head 121 formed on the neck of the male leg 120.

Such a polymer ligation clip 100 is mounted on a dedicated tool called an applicator and used, and when the blood vessel is ligated, the arm head 111 and the male head 121 having a male and female structure are locked by the rotational force of the polymer, and the arm leg ( 110) and the suleg 120 pressurize the blood vessel to prevent leakage of body fluids therein.

On the other hand, there are cases in which a blood vessel and a conduit must be temporarily closed during the surgical procedure and then reopened, and in rare cases, it may be necessary to correct it due to incorrect ligation. In this case, there is a need to remove the ligated clip 100, in which case a clip remover is used.

The clip remover reverses the releasability of the polymer used during ligation to unlock the recess of the male and female structure and the insertion tip. As an example, the clip remover of U.S. Patent No. 6,391,053 has been proposed.

The clip remover 10 of U.S. Patent No. 6,391,053 is a pair that is opened or closed according to the operation of the handles 50 and 52 around the hinge shaft 56 of the pin coupling part 54 as shown in FIG. 2. It consists of a stepped jaw (80,82) of. On the inner surfaces of the jaws 80 and 82, flat clip operation surfaces 90 and 92 and stepped stop surfaces 84 and 86 are formed in a straight line so that an open slot 94 is formed.

The clip remover 10 of the U.S. Patent No. 6,391,053 configured as described above is the arm leg 110 by pressing the curved back 112 portion inside the protrusion formed on the arm leg 110 of the clip 100 as shown in FIG. 3. It is that the male head 121, which was fastened to the arm head 111, is separated by pushing the head of the head toward the front.

However, in the clip remover 10 of U.S. Patent No. 6,391,053, the clip operation surfaces 90 and 92 are made of a single flat straight surface, so when the back 112 of the clip 100 and the arm leg 110 is pressed, As shown in 3, the back 112 is flattened to increase the contact surface p with the clip operation surface, and this increase in the contact area prevents the head of the arm leg 110 from being pushed forward. In addition to removing the deformable space (s), and when continuously pressurized in that state, a situation in which the arm leg 110 is broken often occurs.

In addition, the male head 121 is also pushed forward along with the arm head 111 while the curved wheel 120 is unfolded in a straight line, so that the number that is fastened to the arm head 111 of the arm leg 110 There is a problem that the male head 121 of the leg 120 does not easily come off.

In addition, the clip remover 10 of U.S. Patent No. 6,391,053 has a limitation in use in that the clip operation surfaces 90 and 92 are formed at the same angle and can be used only for a clip of a standard suitable for a specific angle.

US 6391035 B1

The present invention is to solve the above-described problems of the prior art, and the clip is not broken due to excessive pressure during the removal process of the polymer clip ligated to the blood vessel or conduit, and the locking state can be easily released. Its purpose is to provide a multi-stage polymer clip remover that can be used universally even for the standard.

According to the most preferred embodiment of the present invention for solving the above problems, comprising a pressure release portion for releasing the locked state of the clip, a handle portion for operating the pressure release portion, and a connecting rod connecting the pressure release portion and the handle portion. As such, the pressure release portion is formed of a pair of jaws having operating surfaces facing each other while being folded or widened around the hinge axis according to the operation of the handle portion, but the operating surface of the jaws for pressing the clip to be removed is A multi-stage polymer clip remover is provided, characterized in that it has a multi-stage gradient. At this time, the operating surface of the jaws is made of a two-stage gradient having a first flat gradient surface located in the front and a second flat gradient surface located in the rear. When it fades, it is preferable that the angle of inclination of the second flat inclined surface is formed larger than that of the first flat inclined surface.

In addition, the length of the first flat slope and the second flat slope is that when the clip to be removed is inserted into a pair of jaws, one end of the clip is on the first flat slope and the other end is on the second flat slope. It is desirable to set it so that it can be located in.

In addition, a round surface is formed at a point where the second flat gradient surface ends so that the clip can be smoothly deformed while limiting the insertion of the clip.

In addition, a concave groove for securing visibility is provided on the side of the jaw so that the degree of insertion and posture of the clip can be visually confirmed, and a plurality of protrusions in the longitudinal direction are formed on the operation surface of the jaw to ensure You can ensure that the direction of deformation is maintained correctly.

In the present invention, the arm leg is deformed while suppressing the deformation of the hand leg of the clip as much as possible, and the pressure for the deformation of the arm leg is applied to the vertex portion formed between the first and second flat gradient surfaces having different gradients. As a result, since the friction surface that hinders the deformation of the arm leg is reduced and the space in which the change is possible is enlarged, the arm leg can be smoothly opened so that a problem such as a clip breakage does not occur.

In addition, in the present invention, a protrusion in the longitudinal direction is formed on the operation surface of the jaw, so that the deformation direction of the arm leg is made in a straight direction by the protrusion, and the upper and lower portions of the arm leg and the hand leg of the clip are between the protrusions. Since the clip is bitten, it is possible to maintain a vertical posture without tilting the clip during the deformation process of the clip, so that the clip can be removed quickly and accurately.

In addition, in the present invention, since the clip can be removed while confirming the state in which the clip is bitten in the pressure release portion through the concave groove for securing the field of view, the efficiency of the operation is increased.

1 is a perspective view of a commonly used asymmetric polymer ligation clip.
2 is a cross-sectional view of a clip remover according to the prior art,
3 is a cross-sectional view illustrating a problem of the clip remover according to the prior art.
4 is a perspective view of a clip remover according to an embodiment of the present invention.
5 is a perspective view and a cross-sectional view of an embodiment of a pressure release unit constituting the clip remover of the present invention.
6 is a cross-sectional view illustrating a process of releasing a locked state of an asymmetric polymer ligation clip using the clip remover of the present invention.

Hereinafter, a most preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, in the case of obscuring or obscuring the technical idea of the present invention due to a detailed description of a known configuration in the description of the present invention, a description of the known configuration will be omitted.

FIG. 4 is an overall view of the shape of the clip remover 200 according to an embodiment of the present invention, and FIG. 5 is a pressurization to release the lock of the clip 100 by placing the clip 100 in the clip remover 200. It shows in detail an embodiment of the branch 210.

The clip remover 200 of the present invention is a clip remover 200 for removing the polymer clip 100 ligated to a blood vessel or a conduit, and as shown in FIG. 4, the pressure release part 210 and the handle part 220 ) And a connecting rod 230.

The clip 100 that can be removed by the clip remover 200 of the present invention configured as described above is an asymmetric polymer clip, and as shown in FIG. 1, the rear end is connected by a hinge 130 and is convex upwardly. ) And a blood vessel or conduit placed between the female leg 110 and the male leg 120 as the arm head 111 and the male head 121 provided at each tip of the upwardly convex male leg 120 are elastically coupled to each other. It is configured to be capable of ligation.

The pressure release part 210 of the clip remover 200 separates the arm head 111 and the male head 121 by pressing the back 112 of the upper convex arm leg 110 of the clip 100 To release the locked state of the clip 100 is made of a pair of jaws (210A, 210B).

The jaws 210A and 210B have a semicircular cross section having a flat operation surface 211 to support or press the clip 100 to be removed, but the operation surface 211 has a multi-stage gradient. It is configured to be, and is preferably configured to have a two-stage gradient as shown in Figure 5 (b).

In the case of the operating surface 211 having a two-stage gradient as described above, it is composed of a first flat gradient surface 211a located in the front and a second flat gradient surface 211b located in the rear, and more specifically, the jaws 210A, 210B) toward the hinge axis 212, which will be described later, on the inner side, a first flat gradient surface 211a is formed, and the first flat gradient surface 211a is bent again at the end of the second The differential flatness gradient surface 211b is formed.

A pair of these jaws 210A and 210B is centered on the hinge shaft 212 in a state in which the operating surfaces 211 are positioned so as to face each other as the handle unit 220 for operating the pressure release unit 210 is operated. As it collapses or opens, the locking state of the clip 100 is released.

At this time, when the pair of jaws 210A, 210B is maximally squeezed based on the axis oo of the connecting rod 230 connecting the pressure release part 210 and the handle part 220, the second flat slope surface By making the gradient angle α2 of (211b) larger than the gradient angle α1 of the first flat gradient surface 211a, problems that have often occurred in the prior art, that is, the clip 100 during the removal process, as described above. ) Is broken or the unlocking of the locked state is incomplete.

Each of the above-described draft angles (α1, α2) may vary depending on the degree of curvature formed by the arm leg 110 and the hand leg 120 of the clip 100, but based on the commonly used clip 100 When the first flat gradient surface 211a has a gradient angle of 0.9 to 1.0° and the second flat gradient surface 211b has a gradient angle of 6.0° to 15°, the pressurization release unit 210 is the most efficient. Works.

6 shows a process in which the locking state of the clip 100 is released by the pressure release unit 210 having the operating surface 211 of such a two-stage gradient.

6A is a state in which the clip 100 to be removed is inserted into a pair of jaws 210A and 210B.

The clip 100 is placed so that one end is positioned on the first flat slope surface 211a and the other end is positioned on the second flat slope surface 211b. That is, if the head portion of the clip 100 in which the female head 111 and the male head 121 are locked is located on the first flat slope surface 211a, the hinge 130, which is the tail portion of the clip 100, is a second flat ball. They are located on the rear surface 211b, and they may be located even if the directions are reversed.

Therefore, each length of the first flat gradient surface 211a and the second flat gradient surface 211b is when the clip 100 to be removed is inserted into the pair of jaws 210A and 210B, the clip 100 It should be set so that both ends of the are positioned on the first and second flat slope surfaces 211a and 211b, respectively.

Accordingly, the portion of the vertex 213a where the first flat gradient surface 211a and the second flat gradient surface 211b of the operating surface 211 meet is in contact with the arm leg 110 of the clip 100, the outer, etc. 112 Then, between the inner lower surface 122 of the curved portion of the wrist leg 120 and the operation surface 211 are brought close to each other by the vertex 213b of the opposite operation surface 211. The degree of proximity varies depending on the degree of the curvature of the clip 100 and the gradient angle deviation α2-α1 between the first and second flat gradient surfaces 211a and 211b. If the lower surface 122 of the wheel leg 120 is in contact with the vertex 213b from the beginning before the pressurization release unit 210 operates, the deformation of the arm leg 110 may be excessively limited, It is desirable that a slight gap is maintained.

At the point where the second flat gradient surface 211b ends, a round surface 216 is formed to limit the degree to which the clip 100 is inserted into the Make it possible to move forward.

6B shows a state in which the clip 100 is first deformed during the process of operating the pressure release unit 210 by manipulating the handle unit 220.

As the pressure release unit 210 operates, the portion of the vertex 213a where the first flat gradient surface 211a and the second flat gradient surface 211b meet is the arm leg 110 of the clip 100, the outer, etc. 112 When pressed, the arm leg 110 is partially unfolded and the arm head 111 is slightly pushed forward. At this time, the pressing force for the arm leg 110 is partially transmitted to the wrist leg 120, so that the curved cross section of the wrist leg 120 may be partially unfolded. However, the opening of the wheel leg 120 is limited by the portion of the vertex 213b where the first flat gradient surface 211a and the second flat gradient surface 211b meet.

Figure 6 (c) shows a state in which the lock is released because the male head 121 is separated from the arm head 111 of the clip 100 by sufficiently pressing the pressure release unit 210.

Even if the pressing force on the arm leg 110 is increased, the position of the male head 121 is fixed because the lower surface 122 is overlaid by the vertex 213b. , As only the arm leg 110 is further unfolded, the arm head 111 is further advanced so that the male head 121 is separated from the arm head 111.

At this time, the arm leg 110 is pressed against the outer light 112 of the arm leg 110 by the vertex 213a where the first flat gradient surface 211a and the second flat gradient surface 211b meet. Not only does the contact surface p between the back 112 and the operating surface 211 increase, and there is a space s that allows deformation of the arm leg 110 between them, so that the arm leg ( 110) is made more smoothly.

A plurality of protrusions 214 continuous in the longitudinal direction may be further formed on the operation surfaces 211 of the jaws 210A and 210B so that the advance of the arm head 111 is made in a straight direction. The protrusion 214 also functions to prevent the clip 100 from being laid sideways during the process of unlocking the clip 100 by the pressure of the pressure release unit 210.

On the other hand, even if the pressure release part 210 of the clip remover 200 is inserted into the patient's human body and asked for the clip 100 to be removed, the clip 100 has an accurate posture between the operating surfaces 211 on both sides, In other words, it is not easy to check whether it is bitten vertically.

Accordingly, in an embodiment of the present invention, a concave groove 215 for securing a field of view is further provided on the side surfaces of the jaws 210A and 210B.

The concave groove 215 is positioned between the second flat slope surface 211b and the round surface 216 so that the degree of insertion of the clip 100 into the pressure release unit 210 and the bited posture can be confirmed.

As described above, in the clip remover 200 of the present invention, the clip 100 is placed between the first flat gradient surface 211a and the second flat gradient surface 211b having different gradients, and between them. Since the arm leg 110 is unfolded while being fixed and supported so that the wrist leg 120 of the clip 100 is not unfolded by the bent portion of the clip, it can be used for all the clips 100 of the commonly used standard. Do.

In the above, the present invention has been described in detail with reference to specific embodiments, but since the above embodiments are only examples for making the present invention easier to understand, those of ordinary skill in the art will have the scope of the technical idea of the present invention. It is obvious that it will be possible to implement this by various modifications within. Therefore, such modified examples will be said to belong to the scope of the present invention as described in the claims.

100; Clip 110; Amleg
111; Arm head 112; (Arm leg) back
120; Sureg 121; Male head
122; If (Sureg's) is 130; Hinge
200; Clip remover 210; Pressurization release unit
210A, 210B; Joe 211; Working side
211a; First flat gradient surface 211b; 2nd flat slope
212; Hinge shafts 213a, 213b; vertex
214; Protrusion 215; Concave groove
216; Round side 220; Handle part
230; Connecting rod

Claims (6)

A polymer clip consisting of an arm leg 110 and a hand leg 120 for ligating blood vessels or conduits while the rear end is connected by a hinge 130 and the arm head 111 and the male head 121 provided at each end are elastically fastened In a clip remover for removing from a blood vessel or a conduit,
A pressure release unit 210 for releasing the locked state of the clip 100, a handle unit 220 for operating the pressure release unit 210, and a connecting rod connecting the pressure release unit 210 and the handle unit 220 Consisting of (230),
The pressure release part 210 is formed into a pair of jaws 210A and 210B having operating surfaces 211 facing each other while being folded or widened around the hinge shaft 212 according to the operation of the handle part 220. Done,
The operation surface 211 of the jaws 210A and 210B for pressing the clip 100 to be removed includes a first flat slope rear surface 211a located in front and on which one end of the clip 100 is placed, It is located at the rear and is made of a two-stage gradient having a second flat gradient surface 211b on which the other end of the clip 100 is placed,
When the pair of jaws 210A and 210B is maximally indented based on the axis oo of the connecting rod 230, the draft angle α2 of the second flat slope surface 211b is the first flat slope surface ( A multistage polymer clip remover, characterized in that it is formed larger than the gradient angle α1 of 211a).
delete delete The method of claim 1,
A multistage polymer clip remover, characterized in that a round surface 216 is formed at a point where the second flat gradient surface 211b ends.
The method of claim 1,
A multi-stage polymer clip remover, characterized in that a concave groove 215 for securing a field of view is provided on side surfaces of the jaws 210A and 210B.
The method of claim 1,
A multi-stage polymer clip remover, characterized in that a plurality of protrusions 214 are formed in a lengthwise direction on the operation surface 211 of the jaws 210A and 210B.

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