KR102562939B1 - Surgical Wound Retractor - Google Patents

Abstract

The present invention relates to a surgical wound retractor. It takes the form of a ring of a certain diameter and has a flexible ring body in which an accommodation space portion extending in the circumferential direction is formed therein, and a reinforcing core material embedded in the accommodation space portion, elastically deformable, and maintaining the shape of the ring body. an upper ring; a lower ring corresponding to the upper ring, having a shape of a ring of a predetermined diameter, being placed in the abdominal cavity through an incision secured in the abdomen in a folded state, and then being elastically restored into a ring shape to provide support; It is characterized in that it includes a flexible sleeve for providing a passage through the incision in a state where the upper end is coupled to the upper ring and the lower end is coupled to the lower ring, and the lower ring is located in the abdominal cavity.
In the surgical wound retractor of the present invention made as described above, since the reinforcing core is built into the upper ring, the shape of the upper ring is maintained during surgery, so that the incision can be stably opened. In addition, when the lower ring is folded and inserted into the incision, there is no slipping phenomenon of the lower ring, enabling rapid and accurate installation.

Description

Surgical Wound Retractor {Surgical Wound Retractor}

The present invention relates to a wound retractor used in laparoscopic surgery, and more particularly, to a surgical wound retractor that is easy to attach to and separate from an incision and does not change the shape of an inlet during use.

BACKGROUND ART With the development of medical-related technologies, cases in which previously performed open surgery are replaced with laparoscopic surgery are increasing. Laparoscopic surgery is a surgical method in which an incision is made in the abdomen of a patient and a surgical instrument such as an endoscope, forceps, or a cauterizer is inserted through the incision. Since laparoscopic surgery does not involve a long incision in the abdomen, there are advantages in that the patient's or doctor's burden is small and recovery after surgery is fast.

A wound retractor is used in such laparoscopic surgery. The wound retractor is a device that is inserted into an incision secured in the abdomen to open the incision in a round shape, and provides a good view to the doctor, blocks the direct contact of the excised material with the incision, and furthermore, provides a channel device play a supporting role.

What is important in the wound retractor is keeping the incision as wide as possible in a circular shape and its own durability. This is because the incision should be kept in a circular shape to minimize interference between surgical tools and to provide a field of view as mentioned above.

In order to maintain the incision in a circular shape, the mechanical rigidity of the upper ring provided in the wound retractor must be supported to some extent. This is because the upper ring must hold up in the form of a ring so that the incision is kept circular. However, the conventional wheel retractor has a disadvantage that the rigidity of the upper ring is weak. The upper ring does not overcome the contraction force of the incision and is crushed, resulting in narrowing of the incision.

As a background technology of an invention related to a wound retractor, Korean Patent Registration No. 10-1438800 (a wound retractor) has been disclosed.

The disclosed wound retractor is a wound retractor that includes a flexible sleeve installed on a tissue wound and providing a passage for access to a body cavity, and includes a tightening means provided on the flexible sleeve to adjust the cross-sectional area of the passage However, the tightening means is a tightening strap provided to surround the circumference of the flexible sleeve and configured to enable a tightening operation for adjusting the cross-sectional area of the passage, and includes a holding means for maintaining the state in which the tightening strap wraps around the flexible sleeve, The means has a structure configured in the form of a channel functioning to hold the tightening cord at a predetermined position around the flexible sleeve in a state where it passes through.

Korean Patent Registration No. 10-1438800 (wound retractor) Korean Registered Patent Publication No. 10-1172660 (wound retractor for laparoscopic surgery)

The present invention was created to solve the above problems, and the shape of the upper ring is maintained during surgery to maintain a stable open state of the incision hole, and it is possible to install quickly and accurately. It is an object to provide a surgical wound retractor .

The surgical wound retractor of the present invention as a means of solving the problems for achieving the above object takes the form of a ring of a certain diameter and has a flexible ring body in which an accommodation space portion extending in the circumferential direction is formed inside, the accommodation space An upper ring having a reinforcing core material embedded in the unit, elastically deformable, and maintaining the shape of the ring body; a lower ring corresponding to the upper ring, having a shape of a ring of a predetermined diameter, being placed in the abdominal cavity through an incision secured in the abdomen in a folded state, and then being elastically restored into a ring shape to provide support; It is characterized in that it includes a flexible sleeve for providing a passage through the incision in a state where the upper end is coupled to the upper ring and the lower end is coupled to the lower ring, and the lower ring is located in the abdominal cavity.

In addition, the cross section of the upper ring takes the shape of an ellipse, and the sleeve is in a state of being heat-sealed to the upper ring, and when the upper ring rotates using the center line connecting the center of the cross section of the ring body as a rotation axis, the upper ring It is wound on, and the accommodation space is characterized in that located in the center of the ring body.

In addition, the ring body is characterized in that the side space portion is further formed in parallel to the opposite side with the accommodating space portion therebetween, and lowers the rotational resistance when the upper ring rotates.

In addition, the reinforcing core; It is characterized in that it has the same curvature as the ring body and is an arc-shaped embedded iron core with both ends spaced apart.

In addition, the reinforcing core; It is characterized in that it is a spiral built-in iron core that extends in a spiral shape and has a shape in which both ends are offset from each other.

In addition, the reinforcing core; It takes the shape of a ring having the same curvature as the ring body, but a guide hole is formed at one end, and an insertion part is formed that is partially inserted into the entrance of the guide hole and can enter the inside of the guide hole by an external force at the other end. to be

And, it is characterized in that a planar fusion flat portion thermally fused to the upper end of the sleeve is provided on the inner circumferential surface of the ring body of the upper ring.

In addition, the lower end of the sleeve is heat-sealed to the lower ring, and the inner circumferential surface of the lower ring is characterized in that a planar fusion flat portion heat-sealed to the sleeve is provided.

In addition, the sleeve; It is characterized in that two layers of light-transmitting sheets are in close contact with each other, and a plurality of flexible reinforcing wires interposed between the light-transmitting sheets and spaced apart in parallel to each other to reinforce the strength of the light-transmitting sheet are embedded.

In addition, the reinforcing wire is made of nylon fiber, is orthogonal to the upper ring and the lower ring, and is characterized in that it protrudes toward the passage through which the extraction material passes to form a guide protrusion for guiding the movement of the extraction material.

In the surgical wound retractor of the present invention made as described above, since the reinforcing core is built into the upper ring, the shape of the upper ring is maintained during surgery, so that the incision can be stably opened.

In addition, when the lower ring is folded and inserted into the incision, there is no slipping phenomenon of the lower ring, enabling rapid and accurate installation.

1 is a cutaway perspective view of a wound retractor for surgery according to an embodiment of the present invention.
2 is a cross-sectional view of the wound retractor shown in FIG. 1;
Figure 3 is a cutaway perspective view for explaining the configuration of the upper ring shown in Figure 1;
Figure 4 is a cross-sectional view of the upper ring of Figure 3;
5 is a view for explaining the characteristics of the lower ring of FIG.
FIG. 6 is a view showing a state in which a lower ring is compressed to insert the wound retractor shown in FIG. 1 into an incision.
7 is a cross-sectional view showing a modified example of an upper ring applicable to a surgical wound retractor according to an embodiment of the present invention.
Figure 8 is a cross-sectional view showing a modified example of the ring body shown in Figure 3;
9 is a cross-sectional view showing a modified example of a surgical wound retractor according to an embodiment of the present invention.
10 is a cutaway perspective view showing a modified example of an upper ring applicable to a surgical wound retractor according to an embodiment of the present invention.
FIG. 11 is a view showing the embedded iron core shown in FIG. 10 separately.
12 is a view for explaining the operation of the upper ring shown in FIG. 10;
13 is a perspective view showing another modified example of a surgical wound retractor according to an embodiment of the present invention.
FIG. 14 is a cross-sectional view along line EE of FIG. 13 .

Hereinafter, one embodiment according to the present invention will be described in more detail with reference to the accompanying drawings.

The surgical wound retractor of the present invention is a surgical tool that maintains a wide incision hole by inserting it into an incision hole secured in the abdomen during laparoscopic surgery, and takes the form of a ring with a constant diameter and has an accommodation extending in the circumferential direction inside. an upper ring having a flexible ring body in which a space portion is formed, and a reinforcing core material embedded in the accommodation space portion and elastically deformable to maintain the shape of the ring body; a lower ring corresponding to the upper ring, having a shape of a ring of a predetermined diameter, being placed in the abdominal cavity through an incision secured in the abdomen in a folded state, and then being elastically restored into a ring shape to provide support; The upper end is coupled to the upper ring and the lower end is coupled to the lower ring, and has a basic configuration of a flexible sleeve providing a passage through the incision while the lower ring is located in the abdominal cavity.

1 is a cutaway perspective view of a wound retractor 10 for surgery according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the wound retractor shown in FIG. 1 . In addition, Figure 3 is a cutaway perspective view for explaining the configuration of the upper ring shown in Figure 1, Figure 4 is a cross-sectional view of the upper ring of FIG. In addition, FIG. 5 is a view for explaining the characteristics of the lower ring of FIG. 1, and FIG. 6 is a view showing a state in which the lower ring is compressed in order to insert the wound retractor shown in FIG. 1 into the cut hole.

As shown, the surgical wound retractor 10 according to the present embodiment has a basic configuration of an upper ring 20, a lower ring 40, and a sleeve 30. The size or method of use of the wound retractor 10 itself is the same as that of a general wound retractor.

The upper ring 20 is composed of a ring body 21 and a reinforcing core. The ring body 21 is a flexible member made of synthetic resin such as medical rubber or polyurethane, and has a constant diameter as a whole.

In particular, the circumferential cross section of the ring body 21 takes the shape of an ellipse, as shown enlarged in FIG. 2 . In this way, by implementing the ring body 21 in an elliptical shape, the thermal fusion area of the sleeve 30 to the ring body 21 is widened, so that the sleeve 30 is more stably fixed to the ring body 21. In addition, there is no spontaneous loosening in the state in which the upper ring 20 is fully rotated in the direction of arrow a.

As is known, in order to use the wound retractor, the lower ring 40 is inserted into the abdominal cavity through the incision 101 secured in the abdominal wall 100, and then the upper ring 20 is inserted along the center line S. As a reference, by rotating in the direction of arrow a, the sleeve 30 is wound up as much as possible until the upper ring 20 reaches the abdomen, so that the sleeve 30 is pulled tight. The upper ring 20 is tightly fixed on the abdomen with the sleeve rolled up to the maximum.

However, since the cross section of the upper ring 20 is elliptical, even if the upper ring 20 is in a state where the sleeve 30 is wound up to the maximum, it does not unwind in the opposite direction (opposite direction of arrow a). This is to keep the sleeve 30 wound.

Inside the ring body 21, one receiving space 21a and two side spaces 21c are formed. The accommodating space 21a and the side space 21c are, so to speak, ring-shaped spaces that extend side by side in the circumferential direction of the ring body 21 .

The accommodating space 21a is located in the central portion of the ring body 21 in cross section and has a predetermined inner diameter and accommodates the embedded iron core 23. In addition, the side space portion 21c is a ring-shaped space located on the opposite side with the accommodating space portion 21a interposed therebetween. In particular, the inner diameters of both side space parts 21c are the same, and the distance between the side space parts 21c with respect to the accommodation space part 21a is also the same.

The side space portion 21a serves to lower rotational resistance when the upper ring 20 rotates in the direction indicated by the arrow a. For example, to make the upper ring 20 rotate smoothly with less force. The principle is as follows.

While rotating the ring body 21 having an elliptical cross section in the direction of the arrow a, repetitive tensile and compressive forces are applied to one side and the other side in the width direction of the ring body 21 based on the center of the receiving space 21a. is authorized

For example, if the ring body 21 shown in FIG. 2 is rotated by 90 degrees in the direction of arrow a, one end 21m in the width direction of the ring body is stretched and the other end 21n is compressed. The half toward one end of the receiving space 21a based on the center is stretched, and the other half is compressed. In this state, if the ring body 21 further rotates by 180 degrees, tension and compression are reversed.

The greater the tensile force and the compressive force, the greater the resistance of the ring body 21 to rotate in the direction of arrow a. If the cross section of the ring main body 21 is not an ellipse but a circle, the rotational resistance is small, and the rotational resistance is small with at least the cross-sectional area of each of the above-mentioned halves centered on the accommodating space portion 21a.

The side space portion 21c in this embodiment is for reducing the rotational resistance of the ring body 21 in the direction indicated by the arrow a. In the ring body 21 made of a flexible material that can be stretched, it is natural that the side space portion 21c is formed so that it can be rotated more easily than a solid body without any space.

On the other hand, the reinforcing core plays a role of maintaining the shape of the ring body 21 in a state embedded in the accommodating space 21a. In this embodiment, an arc-shaped embedded iron core 23 that can be elastically deformed is used as a reinforcing core.

The built-in iron core 23 has the same curvature as the ring body 21, and as shown in FIG. 3, both ends are spaced apart by a distance G. The reason why the ends of the embedded iron core 23 are spaced apart is to give room for elastic deformation when an external force in the direction of the arrow p is applied. For reference, even if the ring body 21 rotates in the direction of arrow a in FIG. 2, the built-in iron core 23 does not rotate and serves only to support the ring body within the ring body 21.

The sleeve 30 is made of a film-type light-transmitting sheet 31 having a certain thickness, and the upper end is heat-sealed to the upper ring 20 and the lower end to the lower ring 40. The sleeve 30, while the lower ring 40 is located in the abdominal cavity, is pulled tight to cover the incision 101 and provides a passage through the abdominal cavity. The sleeve 30 may be made of medical polyurethane or silicone.

The lower ring 40 is a ring-shaped member made of polyurethane or rubber, has a ring shape of a predetermined diameter, and is coupled to the lower end of the sleeve 30. The diameter of the lower ring 40 is the same as that of the upper ring 20 . As shown in FIG. 6, the lower ring 40 is placed in the abdominal cavity through the incision 101 secured in the abdominal wall 100 in a folded state by an external force, and then elastically restored to the initial state to provide support. to provide.

The circumferential cross section of the lower ring 40 has an approximate D-shape, providing a fusion flat portion 41 and an engaging flat portion 43. The fusion plane portion 41 is a portion where the lower end of the sleeve 30 is interviewed. In addition, the engaging plane portion 43 is a part where the lower ring 40 located in the abdominal cavity is caught on the abdominal wall.

In particular, as shown in FIG. 5, the fusion flat portions 41 face each other with the sleeve 30 interposed therebetween when the lower ring 40 is closed in the direction of the arrow t. Since the fusion flat portion 41 is flat, there is no misalignment even if it is retracted in the direction of arrow t. For example, if the lower ring 40 is in the shape of a general O-ring having a circular cross section, when the lower ring 40 is closed, it is bound to shift up and down. Even if the lower ring 40 is closed in this way, since the lower ring does not shift up and down, insertion in the direction of arrow s in FIG. 6 becomes more rapid and accurate.

Reference numeral 50 is connected to the lower ring 40 as a lead wire. After the operation is completed, when the handle 51 is pulled, the lower ring 40 is pulled by the wire 50 and pulled out of the body.

7 is a cross-sectional view showing a modified example of an upper ring 20 applicable to a surgical wound retractor according to an embodiment of the present invention.

The embedded iron core 23 shown in Fig. 7 has guide holes 23a and insertion portions 23c at both ends. The guide hole 23a is a groove formed at one end of the embedded iron core 23 and opens toward the other end. In addition, the insertion portion 23c is a rod-shaped protrusion formed at the other end of the embedded iron core 23 and is partially accommodated in the guide hole 23a. The extended end of the insertion portion 23c and the bottom portion 23d of the guide hole 23a are separated by a distance G. The distance G is a design matter applied in consideration of the elastic deformation of the upper ring 20.

Figure 8 is a cross-sectional view showing a modified example of the ring body shown in Figure 3;

Referring to the drawings, it can be seen that two side space parts 21d are located on both sides of the accommodation space part 21a. The side space portion 21d takes the shape of a slit. The function of the side space part 21d is the same as the side space part (21c in FIG. 2) described above.

9 is a cross-sectional view showing a modified example of a surgical wound retractor 10 according to an embodiment of the present invention.

As shown, a fusion plane portion 21f is formed on the inner circumferential surface of the ring body 21 of the upper ring 20. The fused flat portion 21f is a flat portion heat-sealed to the upper end of the sleeve 30. By applying the fused plane portion 21f to the ring body 21, the fixation of the sleeve 30 to the upper ring 20 becomes more robust.

10 is a cutaway perspective view showing a modified example of the upper ring 20 applicable to the surgical wound retractor according to an embodiment of the present invention, and FIG. 11 shows the embedded iron core 25 shown in FIG. 10 separately. This is one side view. 12 is a view for explaining the operation of the upper ring shown in FIG. 10;

Referring to the drawing, it can be seen that the built-in iron core 25 accommodated in the ring body 21 is formed in a substantially spiral shape. That is, the built-in iron core 25 is inclined upward or downward while extending in a circular arc direction to have a spiral structure. Both ends of the built-in iron core 25 are spaced apart by a distance G, and in particular have a height difference by Z.

In this way, since the embedded iron core 25 takes the shape of a spiral and both ends are shifted, the upper ring 20 accommodating the embedded iron core 25 can output elastic force in the thickness direction, that is, in the direction of arrow k in FIG. 12 . there is. Therefore, when the upper ring 20 is pressed into the fitting groove 61 of the channel device 60 having the fitting groove 61 of a certain width (R), both ends of the embedded iron core 25 support the fitting groove 61. A more stable bond can be maintained by pressing the surface 61a up and down.

13 is a perspective view showing another modified example of a surgical wound retractor 10 according to an embodiment of the present invention, and FIG. 14 is a cross-sectional view taken along line E-E of FIG.

As shown, it can be seen that the sleeve 30 is composed of two layers of light transmitting sheet 31 and a plurality of reinforcing wires 33. The light transmitting sheets 31 are bonded to each other with reinforcing wires 33 interposed therebetween to function as one sheet.

The reinforcing wire 33 is a wire made of nylon fiber, and reinforces the strength of the light transmitting sheet 31 while interposed between the light transmitting sheet 31 . For example, it prevents the light transmitting sheet 31 from being torn or punctured. The reinforcing wires 33 are flexible and spaced parallel to each other. The extending direction of the reinforcing wire 33 is orthogonal to the upper ring and the lower ring.

A guide protrusion 35 is formed on the inner surface of the sleeve 30 by the reinforcing wire 33, that is, in the passage direction through which the extraction material passes. The guide protrusion 35 is a linear protrusion protruded by the reinforcing wire 33, and guides the movement of the extraction material and minimizes friction between the extraction material and the sleeve 30.

By the guide protrusions 35, a relatively concave interspace 36 is formed between neighboring guide protrusions 35, and the excised material in contact with the guide protrusions 35 is at the bottom of the interspace 36. It spreads from the part (inner wall surface of the sleeve), so the friction is reduced by that much.

In the above, the present invention has been described in detail through specific embodiments, but the present invention is not limited to the above embodiments, and various modifications are possible by those skilled in the art within the scope of the technical idea of the present invention.

10: wound retractor 20: upper ring 21: ring body
21a: receiving space 21c, 21d: side space 21f: fusion plane
21m: one end 21n: the other end 23: built-in iron core
23a: guide hole 23c: insertion part 23d: bottom part
25: Built-in iron core 30: Sleeve 31: Translucent sheet
33: reinforcing wire 35: guide protrusion 36: space between
40: lower ring 41: fusion plane portion 43: engagement plane portion
50: withdrawal wire 51: handle 60: channel device
61: fitting groove 61a: support surface 100: abdominal wall
101: incision

Claims (10)

A flexible ring body in the form of a ring of a certain diameter and having an accommodation space extending in the circumferential direction inside, an upper ring having a reinforcing core material embedded in the accommodation space and elastically deformable and maintaining the shape of the ring body class;
a lower ring corresponding to the upper ring, having a shape of a ring of a predetermined diameter, being placed in the abdominal cavity through an incision secured in the abdomen in a folded state, and then being elastically restored into a ring shape to provide support;
A flexible sleeve having an upper end coupled to the upper ring and a lower end coupled to the lower ring, and providing a passage through the incision while the lower ring is located in the abdominal cavity,
The cross section of the upper ring takes the shape of an ellipse,
The sleeve is thermally fused to the upper ring, and is wound around the upper ring when the upper ring rotates using the center line connecting the center of the end surface of the ring body as a rotation axis,
The receiving space is located in the center of the ring body,
The accommodation space is disposed in parallel on the opposite side with the accommodation space therebetween, and when the upper ring rotates, two side space parts are further formed to lower the rotational resistance, and the two side space parts extend side by side in the circumferential direction of the flexible ring body Surgical wound retractor, characterized in that the ring-shaped space. delete delete According to claim 1,
The reinforcing core;
A wound retractor for surgery, characterized in that it is an arc-shaped built-in iron core having the same curvature as the ring body and having both ends spaced apart. According to claim 1,
The reinforcing core;
A wound retractor for surgery, characterized in that it is a spirally built-in iron core that extends in a spiral shape and has a shape in which both ends are offset from each other. According to claim 1,
The reinforcing core;
It takes the shape of a ring having the same curvature as the ring body, but a guide hole is formed at one end, and an insertion part is formed that is partially inserted into the entrance of the guide hole and can enter the inside of the guide hole by an external force at the other end. Surgical Wound Retractor. According to claim 1,
Surgical wound retractor, characterized in that the inner circumferential surface of the ring body of the upper ring is provided with a planar fusion flat portion heat-sealed to the upper end of the sleeve. According to claim 1,
The lower end of the sleeve is heat-sealed to the lower ring,
A surgical wound retractor, characterized in that the inner circumferential surface of the lower ring is provided with a planar fusion plane portion thermally fused with the sleeve. According to claim 1,
The sleeve;
Two layers of light-transmitting sheets in close contact with each other;
Surgical wound retractor, characterized in that a plurality of flexible reinforcing wires are interposed between the light-transmitting sheets and spaced apart in parallel to each other to reinforce the strength of the light-transmitting sheet. According to claim 9,
The reinforcing wire is made of nylon fiber, is orthogonal to the upper ring and the lower ring, and protrudes toward the passage through which the extraction material passes to form a guide protrusion for guiding the movement of the extraction material.

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