JP7421694B1 - Intraperitoneal vessel automatic ligation device - Google Patents

Abstract

[Problem] Intraperitoneal blood vessel automatic ligation device that can realize the adoption of a completely new ligation line ligation method instead of disposable ligation clips, significantly reducing costs, and at the same time solving problems such as foreign body sensation, dislodgement, and patient psychology. I will provide a. [Solution] An intraperitoneal blood vessel automatic ligation device is disclosed, which belongs to the field of blood vessel ligation auxiliary tools, and includes a ligation wire 1, an internal lead wire component 2, an external lead wire component 3, a wire collection component, and a stopper. The inner lead wire, the outer lead wire and the winding wire 4 are distributed in order from the inside to the outside, a fixing point is provided at the tip of the ligature, and the end engages with the tip of the inner lead, the ligature is fixed. Starting from the point, the outer lead wire is evenly wound several times around the outside to form a winding ring, and then it enters the first gap between the outer lead wire and the winding ring and returns to the fixed point. The extending coil and the winding wire are fitted on the outside of the external lead wire in parallel, and the fixing point is located on the side far from the winding wire. [Selection diagram] Figure 1

Description

TECHNICAL FIELD The present invention relates to the field of vascular ligation aid tools, and more particularly to an automatic intraperitoneal vascular ligation device.

Laparoscopic minimally invasive surgery requires permanent ligation of the blood vessels that supply blood to the partial organ after resection of the partial organ. Particularly in intraperitoneal cholecystectomy, it is necessary to ligate the cystic duct and cystic artery after cholecystectomy. Unlike open surgery, the surgeon uses ligatures to manually ligate blood vessels, and in laparoscopic microinvasive surgery, all operations are dependent on specific surgical instruments.
Currently, there is no suitable instrument, and currently, based on the material and application, doctors are dividing into metal titanium ligation clips, hem-o-lok polymer plastic ligation clips, and absorbable biological ligation clips for ligation and anastomosis of internal blood vessels and tissues. I do.
Metallic titanium binders have many drawbacks after use due to their metallic material properties. For example: when encountering electrocoagulation with an electrocoagulator during the operation, it is easy to conduct current and damage the tissue, the tissue edema that was pinched after the operation will gradually disappear, the ligation clip will loosen, move, and early Phenomena such as dislodgement tend to occur, the ligature does not have the desired closing effect, causing peritoneal infection due to bile leakage or bleeding, diagnostic interference tends to occur in imaging examinations, and latent ligatures remain in the body due to foreign substances remaining in the body. physical harm, psychological impact on patients, etc. Therefore, metallic titanium binders are gradually being withdrawn from the market. Although the hem-o-lok polymer plastic binder can well overcome the problems caused by the above-mentioned materials, its cost is relatively high, and problems such as foreign objects, shedding, patient psychology, etc. still exist.

In view of the problems existing in the prior art, the purpose of the present invention is to provide an intraperitoneal blood vessel automatic ligation device, which can realize adopting a completely new ligature wire ligation method instead of disposable ligation clips, and the cost is significantly reduced. At the same time, problems such as foreign body sensation, shedding, and patient psychology were solved.
In order to solve the above problems, the present invention employs the following technical means.
The intraperitoneal blood vessel automatic ligation device includes a ligation wire, an internal lead wire, an external lead wire, a collection wire, and a blocking wire.
The inner lead wire, the outer lead wire, and the winding wire are distributed in order from the inside to the outside. A fixing point is provided at the tip of the ligature, and the end engages the tip of the inner lead. The ligature starts from the fixing point. After winding the outer lead wire uniformly several times around the outside of the outer lead wire to form a winding ring, it enters the first gap between the outer lead wire and the winding ring, returns to the fixed point, and extends. The take-up coil and the winding wire are fitted on the outside of the outer lead wire in parallel, the fixing point is located on the side far from the winding wire, and the second gap between the winding wire and the outer lead wire is A switching mechanism is provided between the inner lead and the outer lead, the first air gap being smaller than the first air gap, thereby allowing the winding wire to press the connection along the outer wall of the outer lead to complete the winding operation. When the distal end of the ligature is at the distal end of the external lead, an "L"-shaped entry path is formed between the internal lead and the distal end of the external lead, and the distal end of the ligature is disposed internally by the switching mechanism. When switched to the tip of the lead wire, the entry passage is closed, the stopper is fixedly connected with the winding wire, the stopper is located outside the coil, the stopper is used to prevent blood vessels from entering inside the coil be done.
Furthermore, the ligature wire includes a wire head and a wire body that are fixedly connected, the wire head is made of a hard material, the wire body is made of a soft material, and the wire head is inserted into a locking hole opened in the external lead wire part. A torsion spring is connected between the engaging end of the wire head remote from the wire body and the switching mechanism.
Additionally, the inner lead includes an inner sleeve and a line block that are integrally connected;
The inner sleeve is located inside the outer lead wire, and the line block is connected to the side remote from the inner sleeve.
Further, the outer lead wire includes an integrally connected outer sleeve, a lead block and a partition plate, the outer sleeve is located between the inner lead and the winding wire, and the lead block faces the side closer to the central axis of the outer sleeve. a bevel, the distal end of the ligature engages the bevel, the switching mechanism is located on the side where the bevel is closer to the central axis of the outer sleeve, the partition plate is fixedly connected to the inner wall of the outer sleeve, and the distal end of the ligature engages the bevel; A slider that fits the partition plate is opened in the side wall, and the partition plate is inserted into the slider and projects into the interior of the internal lead wire.
Furthermore, the outer end of the outer sleeve is provided with a stopper ring, the stopper ring is close to the lead block on the outer sleeve, and the fixing point is between the stopper ring and the winding line.
Furthermore, a positioning post is fixedly connected to the outer wall of the external lead wire, the positioning post is located on the side where the winding wire leaves the ligature, and a snap is attached to the outer wall of the winding wire via a rotating shaft. It is connected, and the snap has a through hole that matches the positioning pillar.
Furthermore, the switching mechanism includes a first positioning part and a second positioning part, the second positioning part is connected to the external lead wire and has a hook shape, and the first positioning part is fixed to the internal lead wire. , the first positioning part is opened with a perforation that matches the hook shape, the second positioning part is located on the side away from the ligation line, and the first positioning part and the second positioning part can engage with each other. .
Furthermore, at least one redundant section is provided on the ligature, located between two adjacent windings.
Furthermore, when the head is in the vertical position, the partition plate is located between the head and the slope.

The advantages of the present invention compared to the prior art are:
1. This solution replaces the vascular ligation method during laparoscopic minimally invasive surgery through a new ligature wire ligation method, effectively avoiding the problems of existing disposable ligation clips and reducing costs.
2. The ligature of this solution has completed a special winding method through various mechanical structures, so that the ligature is more solid on the outside, and the ligature is not easy to fall off. Wrap it several times on average, extend it from the inside to the fixed point, then extend it from outside the necessary ligation point of the blood vessel through the re-stretching area, and finally tighten and cut off the excess part, so that the fixed point and the blood vessel are The knot is secure because it is pinched and difficult to loosen.
3. This solution realizes a series of complicated wire winding methods, which are mainly completed through internal lead wire parts, external lead wire parts, wire collection parts, switching mechanism and stopper parts, and the external lead wire parts connect the wire tip to blood vessels. It is used to send the wire to the ligation station, and at this time, the inner lead wire part and the outer lead wire part are separated to make it easier to open the passage and allow the blood vessel to enter.After entering, the wire tip is transferred to the inner lead wire part through a switching mechanism. , facilitate the wire tip to pass through the outside of the blood vessel, then pull the inner lead wire to return the wire head into the loop, retrieve the outer lead wire, and finally tighten the wire body with a stopper and winding wire. Complete the ligation and cut off excess wire during repair.

FIG. 3 is a schematic diagram of a perspective structure after removing a stopper according to the present invention. FIG. 2 is a schematic diagram of the structure of location A in FIG. 1. FIG. FIG. 2 is a schematic diagram of the ligature three-dimensional structure of the present invention. It is a schematic diagram of the perspective structure of the locking hole of this invention. FIG. 2 is a schematic diagram of a perspective structure of an internal lead wire of the present invention. FIG. 2 is a perspective structural diagram of an external lead wire of the present invention. FIG. 6B is a schematic diagram of the structure in FIG. 6B. FIG. 2 is a schematic diagram of the three-dimensional structure of the cuff portion of the present invention. FIG. 1 is a schematic diagram of a perspective structure of the present invention. FIG. 3 is a schematic diagram of the structure in an L-shaped channel of the present invention. Configuration diagram when the line head of the present invention is in a vertical state (broken lines are blood vessels) Schematic diagram of the structure of the ligature wire of the present invention when ligated (dashed lines indicate blood vessels)

[Explanation of symbols]
1 Ligation wire 1a Fixing point 10 Redundant portion 11 Wire head 12 Wire body 13 Torsion spring 2 Internal lead wire 21 Inner sleeve 22 Line block 23 Slider 3 External lead wire 3a Locking hole 30 Positioning post 31 Outer sleeve 310 Stopper ring 32 Lead block 33 Partition plate 4 Winding wire 40 Snap 5 Switching mechanism 51 First positioning part 52 Second positioning part 6 Stopper

Specific embodiment example 1:
Referring to FIGS. 1 to 12, the intraperitoneal blood vessel automatic ligation device mainly includes a ligation wire 1, an internal lead wire 2, an external lead wire 3, a winding wire 4, and a stopper 6. 3 and the winding wire 4 are distributed from the inside to the outside, and the ligature wire 1 is coated on the outside of the outer lead wire 3, is coated in parallel with the winding wire 4, and between the winding wire 4 and the outer lead wire 3. The gap is smaller than the minimum gap between the ligature 1 and the external lead wire 3, so that when the winding wire 4 is pressed along the external lead wire 3, the winding wire 4 presses the ligature wire 1. Can be done. The outer shapes of the winding wire 4 and the stopper 6 are both cylindrical and tubular.

1 to 3, the ligature 1 is wound around the outside of the external lead wire 3 in a special way, the ligature 1 includes a wire head 11 and a wire body 12 that are fixedly connected, and the wire head 11 is rigid. The wire body 12 is made of a soft material, and there is a fixed point 1a at the tip of the wire body 12, and after starting from the fixed point 1a, it is outside the external lead wire 3 in a direction close to the winding wire 4. The ligature wire is wound several times along the ligature, and there is no overlap between the rings, and the distribution is uniform, and the last ring is wound and fixed from the first gap between the ligature wire 1 and the external lead wire 3. The ligation wire 1 is extended until it returns to the point 1a, and is fixed with the wire head 11 that is engaged in the locking hole 3a after being extended, and the locking hole 3a is opened on the slope of the lead block 32. It is formed by overlapping a double line with a double line, and the appropriate number can be selected according to the actual ligation needs. The fixing point 1a is created by fixing the tip of the wire 12 and itself wound around it so that the tip of the wire 12 is always clamped after the coil is tightened (see FIG. 12). One end of the wire head 11 separated from the wire body 12 is connected to the second positioning section 52 via a torsion spring 13, and a groove shape corresponding to the torsion spring 13 opened at the lower end of the second positioning section 52 can be installed. The rotation range of the line head 11 can be limited, and the maximum included angle between the line head 11 and the slope is best an acute angle, which is 30 degrees, and the center line of the included angle can be made vertical. , This prevents the line head 11 from being pulled by the blood vessel when moving upward.
Further, when the lead block 32 moves upward, the slope is less likely to connect to the blood vessel, which is advantageous for the exit of the external lead wire 3.

See Figures 4-5. A switching mechanism 5 is provided between the internal lead wire 2 and the external lead wire 3, and the switching mechanism 5 includes a first positioning part 51 and a second positioning part 52, and the second positioning part 52 has a hook shape. None, detachably connected to external lead wire 3. The first positioning part 51 is fixed to the internal lead wire 2 and has a hook-shaped matching perforation. To position.
Referring to FIG. 5, the inner lead 2 includes an inner sleeve 21 and a line block 22 that are integrally connected, the inner sleeve 21 is located inside the outer lead 3, and the first positioning part 5
1 is connected to the side of the line block 22 remote from the inner sleeve 21.

Referring to FIGS. 6-7, the outer lead wire 3 includes an outer sleeve 31, a lead block 32, and a partition plate 33 that are integrally connected, and the outer sleeve 31 is between the inner lead wire 2 and the winding wire 4. A stopper ring 310 is provided at the outer end of the outer sleeve 31, and the stopper ring 310 is located near the lead block 32 on the outer sleeve 31, and the stopper ring 310 is located near the lead block 32 on the outer sleeve 31.
10 can prevent the winding wire from coming off the outside of the external lead wire 3 when the winding wire 4 is not pushing the winding wire, and the winding ring can overcome the stopper ring 310 when pushing the winding wire, and is fixed. The point 1a is located between the stopper ring 310 and the winding wire 4, the side near the central axis of the outer sleeve 31 of the lead block 32 is a slope, and the end of the ligature wire 1 is located in the locking hole 3a on the slope.
The second positioning portion 52 is located on the side of the slope near the central axis of the outer sleeve 31, the partition plate 33 is fixedly connected to the inner wall of the outer sleeve 31, and the inner lead wire 2 is A slider 23 that is aligned with the partition plate 33 is provided, and the partition plate 33 is inserted into the slider 23 and protrudes into the interior of the internal lead wire 2 .

See Figure 1. A positioning post 30 is fixedly connected to the outer wall of the external lead wire 3, and the positioning post 30 is located on the side where the winding wire 4 is separated from the ligature wire 1. A rotating shaft is attached to the outer wall of the winding wire 4. A snap 40 is connected to the positioning post 3 through the snap 40.
0 is opened, and the external lead wire 3 and the winding wire 4 can be positioned relative to each other by placing the snap 40 on the positioning post 30, and the internal lead wire 2 can also be positioned in the same way. , the internal lead wire 2, the external lead wire 3, and the winding wire 4 are fixed to each other before use so that they do not move freely, and the internal lead wire 2 and the external lead wire 3 are wound up by the slider and slider block. It is also possible to make the slider linearly in the longitudinal direction of the inner wall of the line 4.
The inner lead wire 2, the outer lead wire 3, and the winding wire 4 are prevented from relative rotation affecting the engagement between the first positioning part 51 and the second positioning part 52, and the slider is It is also possible to restrict the travel length, therefore, the inner lead wire 2, the outer lead wire 3,
It is possible to limit the maximum and minimum degrees of relative sliding between the winding wire 4 and the winding wire 4, and this portion can be set according to the actual usage situation, so the explanation will be omitted here.

Referring to FIG. 3, the ligature 1 is provided with at least one redundant portion 10, and the redundant portion 1
0 is located between two adjacent windings so that when the wire head 11 is pulled back, the wire head 11 is pushed down from the outer sleeve 31 by the winding 4 so that the wire head 11 is inside the winding. remains so that the winding body 12 can have a sufficient amount to pass through the winding so as not to affect the tightening of the winding.

See Figures 9-10. A stopper 6 is fixedly connected to the winding wire 4, the stopper 6 is located on the outside of the coil, and when the inner lead wire 2 and the outer lead wire 3 are pulled back, the stopper 6 prevents the blood vessel from entering the coil. can be hindered.

Referring to FIG. 11, when the wire head 11 is in a vertical state, the head of the wire head 11 is located on the side away from the slope of the partition plate 33, overcomes the restoring force of the torsion spring 13, and forms an L-shape. Located in the passageway,
The tail of the wire head 11 is tilted too much due to the spring action, making it difficult to touch the blood vessel.

In operation, with reference to FIG. 10, the blood vessel passes through an L-shaped passage without obstruction;
When it is necessary to retrieve the wire after entering, first unlock the internal lead wire 2 so that it can be pulled back, grasp the winding wire 4 and pull back the internal lead wire 2, and then the first positioning part 51 moves to the second position.
The torsion spring 13, which moves in the direction approaching the partition plate 33 according to the internal lead wire 2, always moves the tail of the wire head 11 until it engages with the positioning part 52 and moves the second positioning part 52 and the wire head 11 together. There is a force for rotating the external lead wire 3, and the head of the wire head 11 is placed in the second positioning portion 5.
2, the part inside the locking hole 3a rotates while moving and gradually separates from the locking hole 3a.The minimum distance between the locking hole 3a and the partition plate 33 is the line head 11. When the tail of the wire head 11 is released from the locking hole 3a, the torsion spring 13 enters the side away from the slope of the partition plate 33, and the restricting action of the partition plate 33 continues to prevent the wire head 11 from entering the blood vessel. It is difficult to return, that is, the state shown in FIG. In this case, the external lead wire 3 can be unlocked and pulled back (in this case, it can be pulled back by the above-mentioned slider and chute length limitations). It is not easy to bring it back.

When grasping the winding wire 4 and pulling back the external lead wire 3, since the second gap is smaller than the first gap, the winding wire 4 can gradually separate the wire body 12 from the external lead wire 3, and at the same time The wire head 11 can pull back and tighten the wire body 12, and when the wire body 12 is completely separated from the external lead wire 3 and gradually tightened, the wire body 12 ligates the blood vessel, as shown in FIG. Finally, the excess portion of the tail of the wire body 12 may be cut off. By tightening the coil, the tip of the wire 12 is held, and the more the coil is tightened, the more the tip of the wire 12 is held, the stronger the wire
The ligation is less likely to become loose as described in 2, and the ligation becomes stronger.

Claims (6)

including a ligature wire (1), an internal lead wire (2), an external lead wire (3), a winding wire (4), and a stopper (6),
The inner lead wire (2), the outer lead wire (3) and the winding wire (4) are distributed sequentially from the inside to the outside,
A fixation point (1a) is provided at the tip of the ligature (1), the distal end engages the tip of the internal lead wire (2),
After the ligature wire (1) is evenly wound several times from the fixing point (1a) to the outside of the external lead wire (3) to form a coil, a first gap extending between the external lead wire (3) and the coil is formed. returns to the fixed point (1a) and protrudes,
The winding coil and the winding wire (4) are fitted in parallel on the outside of the external lead wire (3), and the fixed point (
1a) is located on the far side from the winding wire (4) and is connected to the winding wire (4) and the external lead wire (3).
) is smaller than the first gap, the winding wire (4) presses the ligature wire (1) along the outer wall of the external lead wire (3) to recover the wire;
A switching mechanism (5) is provided between the internal lead wire (2) and the external lead wire (3),
When the end of the ligature (1) is at the tip of the outer lead wire (3), an "L" shaped entry path is formed between the inner lead wire (2) and the tip of the outer lead wire (3);
When the end of the ligature wire (1) is switched to the tip of the internal lead wire (2) via the switching mechanism (5), the entry passage is closed;
The stopper (6) and the winding wire (4) are fixedly connected, and the stopper (6) for preventing blood vessels from entering the inside of the coil is located on the outside of the coil.
The ligature (1) includes a wire head (11) and a wire body (12) that are fixedly connected,
The wire head (11) is made of a hard material, the wire body (12) is made of a soft material, and the external lead wire (3
), the wire head (11) engages with the locking hole (3a) formed in the wire body (12), and a torsion spring ( 13) is connected,
The external lead wire (3) has an integrally connected outer sleeve (31) and a lead block (
32) and a partition plate (33),
The outer sleeve (31) is located between the inner lead wire (2) and the winding wire (4), and has an inclined surface on the side near the central axis of the outer sleeve (31) of the lead block (32), and has a ligature wire ( 1) is engaged with the slope, the locking hole (3a) is opened in the slope of the reed block (32), and the switching mechanism (5) is located on the slope side close to the central axis of the outer sleeve (31). ,
The partition plate (33) is fixedly connected to the inner wall of the outer sleeve (31), and a slider (23) adapted to the partition plate (33) is provided on the side wall of the inner lead wire (2), and the partition plate (33) teeth,
It is inserted into the slider (23) and extends inside the internal lead wire (2),
When the line head (11) is in a vertical state, the partition plate (33) separates the line head (11) and the lead block (
32) , the minimum distance between the locking hole (3a) and the partition plate (33) is smaller than the length of the line head (11),
The switching mechanism (5) includes a first positioning part (51) and a second positioning part (52),
The second positioning part (52) is connected to the external lead wire (3) and has a hook shape,
The first positioning part (51) is fixed to the internal lead wire (2) and has a through hole that fits in a hook shape, and the first positioning part (51) is connected to the ligature wire (1) of the second positioning part (52). The first positioning part (51) and the second positioning part (52) engage with each other,
One end of the wire head (11) away from the wire body (12) is connected to the second positioning portion (52) via a torsion spring (13).
Intraperitoneal vessel automatic ligation device. The inner lead wire (2) is connected to the inner sleeve (21) and line block (2) which are integrally connected.
2),
The inner sleeve (21) is located inside the outer lead wire (3), and the switching mechanism (5) is connected to the side remote from the inner sleeve (21) on the line block (22).
The intraperitoneal blood vessel automatic ligation device according to claim 1. The maximum angle between the line head (11) and the slope is an acute angle,
The intraperitoneal blood vessel automatic ligation device according to claim 1. A stopper ring (310) is provided at the outer end of the outer sleeve (31).
31) A stopper ring (310) is located near the upper lead block (32), and the fixing point (1a) is located between the stopper ring (310) and the winding wire (4).
The intraperitoneal blood vessel automatic ligation device according to claim 1. A positioning column (30) is fixedly connected to the outer wall of the external lead wire (3), and the positioning column (30) is fixedly connected to the outer wall of the external lead wire (3).
0) is located on the side where the winding wire (4) separates from the ligature (1), and a snap (40) is connected to the outer wall of the winding wire (4) via a rotating shaft. is the positioning pillar (30)
A through hole that fits the
The intraperitoneal blood vessel automatic ligation device according to claim 1. The ligature (1) is provided with at least one redundant part (10), the redundant part (10) being located between two adjacent coils,
The intraperitoneal blood vessel automatic ligation device according to claim 1.