KR102614337B1 - Retractor for surgical operation - Google Patents

Abstract

The present invention relates to a retractor for surgical operations, and more specifically, to a retractor for surgical operations, in which the epidermis is incised for surgical operations, the incision is expanded to allow surgical tools to easily enter, and an elastic inner unit is formed in a cylindrical shape. This relates to a surgical retractor that maintains the incision expanded by hanging it on the upper outer unit.
According to the present invention, an inner unit made of an elastic material can be inserted into the incision to form a space for surgical operation, and the inner unit can be easily coupled to or separated from the outer unit, allowing for position changes or retractor use during surgery. This has the effect of making removal easier.

Description

Retractor for surgical operation}

The present invention relates to a retractor for surgical operations, and more specifically, when the epidermis is incised for surgical operations, the incision is expanded and kept in an expanded state so that surgical tools can easily enter, and the elastic inner It relates to a surgical retractor that maintains the incision expanded by forming the unit into a cylindrical shape and hanging it on the outer unit at the top.

Diseases that occur inside the patient's body may be curable with drug treatment, but in many cases, surgery is necessary depending on the degree of disease progression or type. Surgical surgery involves making an incision in a part of the patient's body, and performing direct procedures on organs, organs, muscles, etc. located inside the body through the incision using surgical tools. During surgical procedures, incisions on the surface of the patient's body need to remain open.

To keep the incision open during surgery, an elastic silicone ring or vinyl tube is inserted into the incision to keep it open, or forceps or clasps are pulled to the left or right to keep the incision open. .

Figure 1 is a perspective view showing the structure of a retractor for open surgery according to the prior art.

The retractor of the prior art includes a vise device 10 mounted on one corner of the surgical table, a holding device 20 mounted on the top of the vise device 10, and fixed to the top of the holding device 20. A ring fixing device (30), one end of which is fixed to the ring fixing device (30), and a blade fixing device (60) that hangs on the ring (50) in one direction to fix the blade in one direction, It consists of a blade (70) that is inserted and fixed into the blade fixing device (60).

The vise device (10) in the retractor (1) for laparotomy of the present invention includes two outer unit materials (13) and (14) that approach and move away from each other through the guide members (11) and (12). It consists of a fixing screw (15) that moves at least one of the outer unit materials along the guide members (11) and (12).

An upper outer unit material (13) fixed to a large-diameter, hollow guide member (11) and a small-diameter guide member (12), and a fixing screw on the lower side along the guide members (11) and (12) ( The lower outer unit material 14, which is moved by 15 and associated with the upper outer unit material 13, has a long concave portion 16 coupled to one corner of the surgical table on one side of the opposing surface, ( 17) are provided separately from one corner. A fixing lever 18 is mounted on one side of the upper outer unit material 13 to secure one end of the first support of the support device inserted into the hollow guide member 13.

The prior art retractor (1) for open surgery, configured as described above, first mounts the vise device (10) on one corner of the surgical table, then positions the ring (50) in accordance with the abdomen of the surgical patient, and then performs several fixations. Tighten the screw to secure it. Afterwards, during surgery, the blade can be fixed at an appropriate position with a blade fixation device depending on the surgical condition.

This conventional retractor for laparotomy has problems in that the size and installation of the device are inconvenient. More specifically, the existing retractor for open surgery had a problem in that it took a considerable amount of time to install due to the structure of the retractor, thereby prolonging the overall surgery time.

In addition, the existing retractor for open surgery is composed of a number of detailed devices such as a vise device, a holding device, a ring fixture, a blade fixture, and a blade, so the size of the device is very large. Existing retractors for open surgery require a space of a certain size or more to install the retractor. In this way, the existing retractor for open surgery has limitations in installation due to its size, and there is a problem in that the size interferes with the operator's procedure.

In order to complement the problems of existing retractors for open surgery, Republic of Korea Patent No. 10-1592975, “Retraction device for surgical surgery,” was designed, but the extension part of this surgical retractor is not tightly coupled to the fixing part, so it cannot be used during surgery. There was a problem with the expansion part being separated from the fixing part.

Republic of Korea Utility Model Bulletin No. 20-1996-0003177 Republic of Korea Patent Publication No. 10-1101184 Republic of Korea Patent Publication No. 10-1592975

The object is to provide a surgical retractor that is easy to fix to the incision during surgical surgery. In addition, it is not limited to the technical challenges as described above, and other technical challenges may be derived from the description in this section.

A surgical retractor according to an embodiment of the present invention includes an outer unit seated around the incision; It includes an inner unit that passes through the outer unit and is inserted into the incision to maintain the incision in an open state, wherein the inner unit is formed in a cone shape with circular openings at both ends, and has an opening at one end and an opening at the other end. A cone-shaped body with different opening sizes; and a plurality of expansion parts connected to the periphery of one end of the opening of the cone-shaped body and disposed radially, wherein the outer unit is formed in a ring shape and includes a plurality of fixing grooves formed on the upper surface, each of the plurality of expansion parts The inner unit is fixed to the outer unit by being inserted into each of the plurality of fixing grooves.

Each of the plurality of expansion parts protrudes from the surface of the expansion part and extends in the longitudinal direction of each expansion part. It includes at least two or more fixing protrusions arranged, and the at least two or more fixing protrusions are spaced apart by a predetermined distance.

The plurality of fixing grooves are formed in the same direction, either clockwise or counterclockwise, on the surface of the outer unit.

The outer unit includes fixing protrusions formed on upper surfaces of each of the plurality of fixing grooves; and a locking protrusion protruding toward a lower surface of the outer unit at an end of the fixing protrusion, and the fixing protrusion includes a concave engraving formed in a shape corresponding to the fixing protrusion and concave from the outer surface toward the inner surface of the outer unit. .

Each of the fixing protrusions and the intaglio of the outer unit is formed in a rectangular parallelepiped shape, and the inner unit is fixed to the outer unit in such a way that one of at least two fixing protrusions of each expansion part is inserted into the intaglio of the fixing protrusion.

The size of the central through hole of the inner unit varies depending on which of the at least two or more fixing protrusions is inserted into the intaglio of the fixing protrusion.

According to the present invention, an inner unit made of an elastic material can be inserted into the incision to form a space for surgery, and the inner unit can be easily coupled to or separated from the outer unit, allowing for position changes or removal of the retractor during surgery. It has the effect of making it easier.

In the surgical retractor, the inner unit is inserted into the patient's incision, and the expansion portion of the inner unit is fixed to the outer unit, so that the central through hole of the inner unit remains open. During surgery, the operator can stably operate on the inside of the incision through the central penetration hole of the open inner unit. The surgical retractor according to the present invention prevents the incision from being closed again due to the elasticity of the skin, allowing the operator to easily perform the surgery.

In addition, in the surgical retractor according to embodiments of the present invention, the extension of the inner unit is inserted into the fixing groove of the outer unit, and in addition, the fixing protrusion protruding from the surface of the extension is inserted into the intaglio of the fixing protrusion. As previously described, the extended portion of the inner unit is firmly fixed to the outer unit as the fixing protrusion of the inner unit is tightly fitted into the intaglio of the outer unit. Accordingly, it is possible to effectively prevent the inner unit from being separated from the outer unit during surgery.

Additionally, in the surgical retractor according to embodiments of the present invention, a plurality of fixing protrusions protrude on the expansion part of the inner unit, depending on which fixing protrusion of the plurality of fixing protrusions is coupled to the intaglio of the outer unit. The size of the central through hole of the inner unit is variable. Therefore, the surgical retractor according to embodiments of the present invention can adjust the size of the central through hole according to the size of the incision. The surgical retractor according to embodiments of the present invention can be applied to incisions of various sizes.

Figure 1 is a perspective view showing the structure of a retractor for open surgery according to the prior art.
Figure 2 is a perspective view of a surgical retractor according to an embodiment of the present invention.
Figure 3 is a diagram showing a state in which the outer unit and the inner unit are separated from the surgical retractor shown in Figure 2.
Figure 4 is a perspective view of the outer unit shown in Figure 3.
Figure 5 is a side view of the outer unit shown in Figure 3.
FIG. 6 is an enlarged view of the fixing groove of the outer unit shown in FIG. 5.
Figure 7 is a perspective view of the inner unit shown in Figure 3.
Figure 8 is a side view of the inner unit shown in Figure 3.
Figure 9 is a side view showing a state in which the outer unit and the inner unit are combined.
Figure 10 is a diagram showing an example of using a surgical retractor for an incision according to an embodiment of the present invention.

The present invention can be modified in various ways and can have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

First, the terms used in the specification and claims are general terms selected in consideration of their functions in various embodiments of the present invention. However, these terms may vary depending on the intention of technicians working in the field, legal or technical interpretation, and the emergence of new technologies. Additionally, some terms may be terms arbitrarily selected by the applicant. These terms may be interpreted as defined in this specification, and if there is no specific term definition, they may be interpreted based on the overall content of this specification and common technical knowledge in the relevant technical field.

In addition, the same reference numerals or symbols in each drawing attached to this specification indicate parts or components that perform substantially the same function. For convenience of explanation and understanding, different embodiments will be described using the same reference numbers or symbols. That is, even if all components having the same reference number are shown in multiple drawings, the multiple drawings do not represent one embodiment.

Additionally, in this specification and claims, terms including ordinal numbers such as 'first', 'second', etc. may be used to distinguish between components. These ordinal numbers are used to distinguish identical or similar components from each other, and the meaning of the term should not be interpreted limitedly due to the use of these ordinal numbers. For example, components combined with these ordinal numbers should not be interpreted as having a limited order of use or arrangement based on the number. If necessary, each ordinal number may be used interchangeably.

In this specification, singular expressions include plural expressions, unless the context clearly dictates otherwise. In the present application, terms such as 'comprise' or 'constitute' are intended to designate the presence of characteristics, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are intended to indicate the presence of one or more other It should be understood that this does not preclude the presence or addition of features, numbers, steps, operations, components, parts or combinations thereof.

Additionally, in an embodiment of the present invention, when a part is connected to another part, this includes not only direct connection but also indirect connection through other media. Additionally, the fact that a part includes a certain component does not mean that other components are excluded, but that it may further include other components, unless specifically stated to the contrary.

Hereinafter, a “retractor for surgery” according to an embodiment of the present invention will be described with reference to the drawings.

Figure 2 is a perspective view of a surgical retractor according to an embodiment of the present invention, and Figure 3 is a diagram showing a state in which the outer unit and the inner unit are separated from the surgical retractor shown in Figure 2.

Referring to Figures 2 and 3, the surgical retractor (1) consists of an outer unit (10) and an inner unit (20). The surgical retractor 1 is inserted into an incision in the patient's skin so that the incision can remain open during the surgical procedure. The surgical retractor (1) consists of an inner unit (20) that has an opening in the center and is inserted into the incision site, and an outer unit (10) in which the inner unit (20) is coupled and fixed.

The outer unit 10 is manufactured in a ring shape and fixes the inner unit 20 inserted into the inner opening of the ring. More specifically, the outer unit 10 fixes the inner unit 20 so that the opening of the inner unit 20 coupled to the outer unit 10 can be maintained in an open state. The outer unit 10 is made of a relatively hard material so that the inner unit 20 can be firmly fixed. For example, the outer unit 10 is made of polycarbonate (PC).

The inner unit 20 is manufactured in a cone shape with an opening formed in the center, and allows the incision in the patient's skin to remain incised. The inner unit 20 is inserted into the incision to keep the incision open. The inner unit 20 allows surgical instruments including clamps, scissors, knives, etc. to enter and exit through an opening formed in the center of the inner unit 20. The inner unit 20 is made of a material with good elasticity so that it can be easily inserted into the incision and the incision can be easily expanded. For example, the inner unit 20 is made of silicone. The outer unit 10 and the inner unit 20 will be described in detail below along with the drawings.

Figure 4 is a perspective view of the outer unit shown in Figure 3, and Figure 5 is a side view of the outer unit shown in Figure 3. Referring to Figures 4 and 5, the outer unit 10 includes a ring-shaped body 101 formed in a ring shape. The ring-shaped body 101 includes a circular central opening 102 at its center. The outer unit 10 serves to maintain the extended portion 202 of the inner unit 20 pulled outward so that surgical tools can smoothly enter and exit through the inner unit 120.

The shape of the outer unit 10 has a ring-shaped body 101 that is a thin disc with a hole in the center, and the diameter of the ring-shaped body 101 is determined depending on the size of the incision. It is desirable that the inner diameter of the ring-shaped body 101 is approximately larger than the size of the incision, but is not too different from the size of the incision. If the diameter of the ring-shaped body 101 is too large compared to the size of the incision, excessive force is applied to the incision during the process of fixing the inner unit 20 to the outer unit 11, and there is a risk that the patient's incision may become larger. Because there is.

A circular central opening 102 is formed in the center of the ring-shaped body 101. The inner unit 20 may be inserted into the central opening 102. In the drawing of the present invention, the shape of the ring-shaped body 101 and the central opening 102 is most preferably circular, but it is not limited thereto and may be changed to an oval or polygonal shape depending on the case.

The outer unit 10 includes a plurality of fixing grooves 103 formed in the circumferential direction on the upper surface of the ring-shaped body 101. Each fixing groove 103 is a groove engraved in the circumferential direction on the upper surface of the ring-shaped body 101. More specifically, the fixing groove 103 is composed of an inclined surface having a certain inclination with the upper surface of the ring-shaped body 101 and a groove parallel to the upper surface of the ring-shaped body 101. The expansion portion 202 of the inner unit 20 is inserted into the fixing groove 103.

A plurality of fixing grooves 103 are formed clockwise or counterclockwise on the upper surface of the ring-shaped body 101 of the outer unit 10. According to one embodiment of the present invention, the plurality of fixing grooves 103 are all formed in the same clockwise/counterclockwise direction. Since the plurality of fixing grooves 103 are formed in the same direction, all of the plurality of expansion parts 202 of the inner unit 20 are fitted into the fixing grooves 103 in the same direction. Accordingly, the inner unit 20 can be easily coupled to the outer unit 10.

According to another embodiment of the present invention, each of the plurality of fixing grooves 103 is formed in a different direction from the fixing grooves 103 adjacent to each other. More specifically, when the first fixing groove among the plurality of fixing grooves 103 is formed in a clockwise direction, the second and third fixing grooves adjacent to the first fixing groove are formed in a counterclockwise direction. As the plurality of fixing grooves 103 engraved in the ring-shaped body 101 are formed differently, the inner unit 20 is firmly coupled to the outer unit 10 without being easily separated.

FIG. 6 is an enlarged view of the fixing groove of the outer unit shown in FIG. 5. Referring to FIG. 6, the fixing groove 103 formed on the side of the ring-shaped body 101 is a groove engraved on the upper surface of the outer unit 10. The fixing groove 103 is composed of an inclined surface facing from the upper surface of the outer unit 10 to the lower surface, and an internal groove parallel to the lower surface at the end of the inclined surface. The expanded portion 202 of the inner unit 20 is inserted into the inner groove of the fixing groove 103 through the inclined surface of the fixing groove 103.

The outer unit 10 has a fixing protrusion 1031 that protrudes in a direction different from the direction of the groove in which the fixing groove 103 is formed on the fixing groove 103, and a lower surface of the outer unit 10 at one end of the fixing protrusion 1031. It further includes a locking protrusion 1032 protruding towards. The extension 202 of the inner unit 20 is fixed to the fixing groove 103 of the outer unit 10 by being inserted under the fixing protrusion 1031.

The locking protrusion 1032 protrudes from one end of the fixing protrusion 1031 toward the lower surface of the outer unit 10. The locking protrusion 1032 has a fan-shaped cross-section so that the expanded portion 202 can be easily inserted into the fixing groove 103 and the inserted expanded portion 202 cannot be easily separated from the fixing groove 103. The locking protrusion 1032, which has a fan-shaped cross section, is arranged so that the fan-shaped arc portion faces the outside of the fixing groove 103.

The fixing protrusion 1032 includes a concave portion 1033 into which the fixing protrusion 2021 formed on the surface of the expanded portion 202 of the inner unit 20 is inserted. More specifically, a concave engraving 1033 is formed on the outer surface of the fixing protrusion 1031 in a shape corresponding to the shape of the fixing protrusion 2021. According to an embodiment of the present invention shown in FIG. 3, when the fixing protrusion 2021 of the inner unit 20 is formed in a hexahedron, the intaglio 1033 is cut into a hexahedron shape. In addition to the hexahedral shape shown in one embodiment of the present invention, the fixing protrusion 2021 may be formed in various other shapes. The fixing protrusion 2021 is preferably formed in a shape with an edge so that the fixing protrusion 2021 is firmly fixed to the intaglio 1033 of the outer unit 10.

Figure 7 is a perspective view of the inner unit shown in Figure 3, and Figure 8 is a side view of the inner unit shown in Figure 3. Referring to Figures 7 and 8, the inner unit 20 includes a cone-shaped body portion 201 formed in a cone shape with both ends open and a through hole in the center, and one end of the cone-shaped body portion 201 having a cone shape. It includes a plurality of expansion parts 202 connected to the circumference of the through hole and arranged radially.

The cone-shaped body portion 201 is formed in a cone shape with both ends open and a central through hole 203 at the center, and the sizes of the openings at both ends are different. The diameters of the openings formed at both ends of the cone-shaped body portion 201 are different. Here, among both ends of the cone-shaped body portion 201, the side with the smaller opening size is referred to as the upper end, and the side with the larger opening size is referred to as the lower end.

A ring-shaped upper ring 2011 is coupled to the upper opening of the cone-shaped body 201, and a ring-shaped lower ring 2012 is coupled to the lower opening of the cone-shaped body 201.

The cone-shaped body portion 201 of the inner unit 20 is inserted into an incision in the patient's skin. More specifically, the lower end of the cone-shaped body 201, which has a large diameter opening, is inserted into the patient's body through the incision and is located in the patient's body, and the cone-shaped body 201 The top of is located outside the patient's body. The cone-shaped body portion 201 of the inner unit 20 inserted into the incision allows the incision to remain open. During surgery, surgical instruments can be inserted into and removed from the patient's body through the central through hole 203 penetrating the center of the cone-shaped body 201.

The plurality of expansion portions 202 are radially coupled around one opening with a smaller diameter among the openings formed at both ends of the cone-shaped body portion 201. More specifically, each of the plurality of expansion parts 202 is radially attached to the outer peripheral surface of the upper ring 2011 and spaced apart from each other at regular intervals.

Each extension 202 is formed in the shape of a rectangular panel. Each expansion part 202 of the inner unit 20 is inserted into the fixing groove 103 of the outer unit 10.

A plurality of fixing protrusions 2021 protrude from the upper surface facing the direction opposite to the cone-shaped body part 201 among both surfaces of each expansion part 202. Each expansion portion 202 includes at least two fixing protrusions 2021. At least two fixing protrusions 2021 protruding from one expansion portion 202 are protruded at a predetermined distance from each other in the longitudinal direction of the expansion portion 202. Here, the longitudinal direction of the expansion portion 202 is away from the upper ring 2011 of the inner unit 20.

The fixing protrusion 2021 of the expansion part 202 is coupled to the intaglio 1033 formed on the side of the fixing protrusion 1031 of the outer unit 10. The fixing protrusion 2021 of the expansion portion 202 may be formed in various shapes. In the embodiment shown in FIGS. 7 and 8 of the present invention, the fixing protrusion 2021 is formed in a hexahedral shape.

Figure 9 is a side view showing the outer unit 10 and the inner unit 20 combined. Referring to FIG. 9, the inner unit 20 is inserted into the central opening of the outer unit 10. The outer unit 10 surrounds the cone-shaped body portion 201 of the inner unit 20. Here, because the extension 202 of the inner unit 20 extends radially toward the outer unit 10, the outer unit 10 is located below the extension 202 of the inner unit 20. Then, each of the plurality of expansion parts 202 is pulled and inserted into the fixing groove 103 of each outer unit 10.

The thickness of the expansion part 202 is narrower than the spacing of the fixing groove 103, and the combined thickness of the expansion part 202 and the fixing protrusion 2021 is manufactured to be thicker than the thickness of the fixing groove 103, so that the inner unit ( The expansion part 202 of 20) can be maintained without being separated while inserted into the fixing groove 103 of the outer unit 10.

Figure 10 is a diagram showing an example of using a surgical retractor for an incision according to an embodiment of the present invention. More specifically, Figure 10a is a side view showing the inner unit 20 being inserted into the incision in the epidermis 200, and Figure 10b is a side view showing the outer unit 10 with the inner unit 20 inserted into the incision. This is a side view showing the fixed state.

Referring to Figure 10, the inner unit 20 is inserted into the area where the epidermis 200 is cut for surgery. Since the inner unit 20 is made of an elastic and flexible material, the lower ring 126 is slightly distorted to reduce its volume, and then it is inserted into the patient's body through an incision.

The incision before expansion has a shape close to a straight line. The lower ring (2012) is elongated and the epidermis (200) is lifted slightly and inserted underneath. The lower ring 2012 opens slightly due to its elasticity and enters the interior of the epidermis 200. When the lower ring 2012 enters the inside of the outer skin 200, the lower ring 2012 is fixed to the bottom of the outer skin 200 to prevent the inner unit 20 from coming out immediately.

Next, as shown in FIG. 10A, with the inner unit 20 inserted into the outer skin 200, the plurality of extensions 202 of the inner unit 20 are folded inward to insert the outer unit 10. The outer unit 10 is located between the bottom of the expanded portion 202 of the inner unit 20 and the upper surface of the skin 200. Alternatively, before inserting the inner unit 20, the inner unit 120 may be inserted into the incision while the outer unit 10 is placed on the epidermis 200 of the incision.

Next, as shown in FIG. 10b, the extension 202 of the inner unit 20 is pulled outward and inserted into the fixing groove 103 of the outer unit 10. A plurality of fixing protrusions 2021 protruding from the surface of each extension 202 of the inner unit 20 are supported by the outer surface of the outer unit 10. Accordingly, the inner unit 20 is fixed to the outer unit 10, and the through hole of the inner unit 20 is maintained in an expanded state.

In addition, the fixing protrusion 2021 protruding from the surface of the expanded portion 202 of the inner unit 20 is inserted into the intaglio 1033 formed on the side of the fixing protrusion 202 of the outer unit 10. As described above, the engraving 1033 of the outer unit 10 is formed on the outer surface of the outer unit 10 in a shape corresponding to the fixing protrusion 2021 of the inner unit 20. The fixing protrusion 2021 of the inner unit 20 is inserted into the intaglio 1033 of the outer unit 10. In this way, the expansion portion 202 of the inner unit 20 is coupled to the fixing groove 103 of the outer unit 10. Accordingly, the inner unit 20 is strongly fixed to the outer unit 10.

The size of the through hole of the inner unit 20 can be varied by changing the fixing protrusion 2021 of the expansion part 202 inserted into the fixing groove 103 according to the size of the incision on the patient's skin. More specifically, among the at least two fixing protrusions 2021 protruding on the expanded portion 202 of the inner unit 20, the fixing protrusion 2021 farthest from the center of the inner unit 20 is used for fixing the outer unit 10. As it is inserted into the groove 103, the size of the through hole 20 of the inner unit 20 increases. If the incision is straight, the incision is expanded into a circular shape by pulling the extension 202 of the inner unit 20 located in a direction perpendicular to the straight direction of the incision centered on the center of the outer unit 10 to perform surgery. It can be made into an easy form.

The doctor performing the surgery inserts a surgical tool into the central through hole 203 of the inner unit 20 and the incision 200 on the epidermis and performs surgery on the inside of the incision. After the surgery is completed, the fixing protrusion 2021 of the inner unit 20, which is inserted into the fixing groove 103 of the outer unit 10, is moved toward the inclined surface of the fixing groove 103, and the expansion part 202 is placed in the fixing groove ( 103). When all the extensions 202 of the inner unit 20 are separated from all the fixing grooves 103 of the outer unit 10, the upper ring 2011 gathers inward and the incision becomes narrow again. Then, the expansion portion 202 of the inner unit 20 is retracted inward to remove the outer unit 10, and the lower ring 2012 of the inner unit 20 is crushed to reduce its volume and removed from the incision. . Afterwards, the incision can be sutured with the inner unit 120 removed.

According to the above-described embodiments of the present invention, the inner unit of the surgical retractor is inserted into the patient's incision, and the central through hole of the inner unit is kept open as the extension of the inner unit is fixed to the outer unit. . During surgery, the operator can stably operate on the inside of the incision through the central penetration hole of the open inner unit. The surgical retractor according to the present invention prevents the incision from being closed again due to the elasticity of the skin, allowing the operator to easily perform the surgery.

In addition, in the surgical retractor according to embodiments of the present invention, the extension of the inner unit is inserted into the fixing groove of the outer unit, and in addition, the fixing protrusion protruding from the surface of the extension is inserted into the intaglio of the fixing protrusion. As previously described, the extended portion of the inner unit is firmly fixed to the outer unit as the fixing protrusion of the inner unit is tightly fitted into the intaglio of the outer unit. Accordingly, it is possible to effectively prevent the inner unit from being separated from the outer unit during surgery.

Additionally, in the surgical retractor according to embodiments of the present invention, a plurality of fixing protrusions protrude on the expansion part of the inner unit, depending on which fixing protrusion of the plurality of fixing protrusions is coupled to the intaglio of the outer unit. The size of the central through hole of the inner unit is variable. Therefore, the surgical retractor according to embodiments of the present invention can adjust the size of the central through hole according to the size of the incision. The surgical retractor according to embodiments of the present invention can be applied to incisions of various sizes.

Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the technical configuration of the present invention described above can be changed to other specific forms by those skilled in the art without changing the technical idea or essential features of the present invention. You will be able to understand that this can be implemented. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive, and the scope of the present invention is indicated by the claims described later rather than the detailed description above, and the meaning and scope of the claims and All changes or modified forms derived from the equivalent concept should be construed as falling within the scope of the present invention.

1: Retractor
10: Outer unit
101: Ring-shaped body 102: Center opening
103: fixing groove 1031: fixing protrusion
1032: Obstacle 1033: Engraved
20: Inner unit
201: cone-shaped body part 202: expansion part
2011: Upper ring 2012: Lower ring
2021: Fixed protrusion
203: Center through hole

Claims (6)

A surgical retractor that expands the incision formed in the epidermis 200 for surgery,
an outer unit (10) seated around the cutout portion;
It includes an inner unit 20 that passes through the outer unit 10 and is inserted into the incision to maintain the incision in an open state,
The inner unit 20 is
A cone-shaped body portion (201) formed in a cone shape with circular openings at both ends, and the openings at one end and the other end having different sizes; and
It includes a plurality of extension parts 202 connected to the periphery of one end of the opening of the cone-shaped body part 201 and arranged radially,
The outer unit 10 is
It is formed in a ring shape and includes a plurality of fixing grooves 103 formed on the upper surface,
The inner unit 20 is fixed to the outer unit 10 in such a way that each of the plurality of expansion parts 202 is inserted into each of the plurality of fixing grooves 103,
Each of the plurality of expansion parts 202 is
It protrudes from the surface of the expansion portion 202 and extends in the longitudinal direction of each expansion portion 202. It includes at least two fixing protrusions (2021) arranged,
The at least two fixing protrusions 2021 are spaced apart by a predetermined distance,
The plurality of fixing grooves 103 are formed in the same direction, either clockwise or counterclockwise, on the surface of the outer unit 10,
The outer unit 10 is
Fixing protrusions 1031 formed on the upper surfaces of each of the plurality of fixing grooves 103; and
At the end of the fixing protrusion 1031, a locking protrusion 1032 protruding toward the lower surface of the outer unit 10 is included,
The fixing protrusion 1031 has a shape corresponding to the fixing protrusion 2021 and includes a concave engraving 1033 formed concavely from the outer surface toward the inner surface of the outer unit 10. Tractor. delete delete delete According to claim 1,
Each of the fixing protrusion 1031 and the engraving 1033 of the outer unit 10 is formed in a rectangular parallelepiped shape,
The inner unit 20 is fixed to the outer unit 10 in such a way that one of the at least two fixing protrusions 2021 of each expansion part 202 is inserted into the intaglio 1033 of the fixing protrusion 1031. A retractor for surgery, characterized in that: According to claim 5,
As any of the at least two fixing protrusions 2021 is inserted into the intaglio 1033 of the fixing protrusion 1031, the size of the central through hole 203 of the inner unit 20 increases. A surgical retractor characterized by being variable.