KR20160082018A - Surgical retractor - Google Patents

Abstract

The present invention relates to a surgical retractor which enables an operator to easily extend a cut portion. A surgical retractor according to an embodiment of the present invention includes a frame attachable to an operating table; and a plurality of retractor assemblies installed to the frame, wherein each of the retractor assemblies includes a frame connecting part detachably fixed to the frame; a moving part slidably connected to the frame connecting part; an arm having a tilting part installed to be tilted to the moving part; a blade support installed to the tilting part; a blade slidably installed to the blade support; and a blade part connected to the blade and having a blade fixing part coupled to or decoupled from the blade support.

Description

[0001] Surgical retractor [0002]

The present invention relates to a surgical retractor.

A retractor is a medical instrument that assists an operator's view by cutting the skin or muscle under the skin and fixing them during surgery.

FIG. 14 shows an example of a conventional retractor 200. As shown in FIG. The conventional retractor 200 has one blade 220 attached to the lever 210 so that the operator can widen the operative space to secure a field of view.

However, when the incision is enlarged due to the wide surgical region, since the blade 220 is attached to each lever 210, the incision can not be fixed at one time. Therefore, the incision should be continuously used along the incision site There was an inconvenience.

In addition, there is a problem that the operator's vision for the surgical site is insufficient, the operation time is delayed, and the patient's bleeding or post-operative pain increases.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a retractor for surgical operation which can easily expand the incision part, adjust the length of the retracted blade, The purpose is to provide.

In addition, the present invention includes other objects which are not explicitly described, but can be derived from the constitution of the present invention.

In order to achieve the above object, a retractor for surgical operation according to an embodiment of the present invention includes a frame attachable to a surgical table, and a plurality of retractor assemblies mounted on the frame, Each of the retractor assemblies includes a frame part connecting part detachably fixed to the frame part, a moving part slidably connected to the frame part connecting part, and an arm part having a tilting part tilably mounted on the moving part and a blade portion having a blade supporting portion mounted on the tilting portion, a blade slidably mounted on the blade supporting portion, and a blade fixing portion connected to the blade and engaged or disengaged from the blade supporting portion, .

The blade support portion has a plurality of engagement grooves formed in its longitudinal direction on an inner rear surface thereof, and the blade fixing portion has a engagement protrusion. The engagement protrusion is inserted into any one of the plurality of engagement grooves by the restoring force of the elastic member And when the force acting in a direction opposite to the restoring force of the elastic member acts, the engaging jaw is disengaged from any one of the plurality of engaging grooves.

Further, while the plurality of latching grooves are engaged with the latching jaw, the blade fixing portion is allowed to move downward, but the upward movement is restricted.

The blade fixing part is rotatably connected to the blade through a fixing pin. The elastic member is supported on a lower back surface of the blade fixing part at one end in a state of being wound on the fixing pin, Supported by a support.

In addition, the blades are provided with blade portions on both sides, and the blade supporting portion is formed with blade insertion grooves into which the blade portions are inserted.

The frame portion connecting portion may include a pair of grip portions supported on both ends of the elastic member and movable in a direction to be close to each other when a force in a direction opposite to the restoring force of the elastic member acts, And a connecting body portion having a through groove having a clearance allowing the grip portion to move and a slide groove on which the moving portion is slidable.

The moving part has a first plurality of grooves formed on one side thereof and a second plurality of grooves formed on the other side thereof. The frame part connecting part includes a first gear rotatably engaged with the first plurality of grooves on one side, And a retaining jaw which is engaged with the second plurality of grooves by a restoring force of the elastic member on the other side and is released from engagement with the two plurality of retaining grooves when a force in a direction opposite to the restoring force of the elastic member acts, And an auxiliary fixing unit.

In addition, while the second plurality of grooves are engaged with the engaging jaws, the moving unit is allowed to move in one direction but is restricted from moving in the other direction.

The moving part includes a worm shaft at one end thereof. The tilting part has a worm wheel engaged with the worm shaft. The worm wheel is rotated in conjunction with rotation of the worm shaft to tilt the tilting part .

The surgical retractor further includes an elastic membrane surrounding or connecting the plurality of the blade supports.

According to the present invention, the following effects can be obtained.

When the practitioner needs to support the incision part of the skin or the like deeper by using the retractor, the operator simply moves the blade downward as needed with respect to the blade supporting part. When the length of the blade part is reduced, A force in a direction opposite to the restoring force of the engaging jaw may be applied so that the engaging jaw is released from engagement with the engaging groove and then moved upward. Therefore, the support depth of the incision can be adjusted through a simple operation.

In addition, when the practitioner attaches the arm portion to the frame, the elastic member is compressed by applying the force in the direction in which the grip portions are opposed to each other, and then inserted into the arm portion fastening groove and then the force is removed. The arm portion is not separated from the arm engagement groove of the frame. Therefore, the practitioner can simply mount or mount the arm portion on the frame.

In addition, since the elastic membrane is installed in a manner to surround the blade supporting portions or connect the elastic supporting membranes to each other, the space between the blades formed during the operation can be prevented, thereby preventing the inflow of the tissue and advantageously securing the space.

In addition, since the moving part of the arm can be easily moved from the frame part connecting part, it can be easily applied even in Minimal Invasive Surgery.

Also, since the blade portion can be easily and easily tilted by using the tilting portion, it is possible to easily enlarge the incision portion during the operation and to secure the operation space efficiently.

Further, the effects of the present invention are not limited to these, and include other effects derived from the detailed description of the present invention described later.

1 is a perspective view of a retractor according to an embodiment of the present invention.
Figure 2 shows a retractor assembly of the retractor of Figure 1;
3 is an exploded perspective view of the main configuration of the retractor assembly of FIG. 2;
Fig. 4 shows the main configuration of the blade portion of the retractor assembly of Fig. 2, with the 'A' portion being a rear perspective view of the blades and the blade fixing portion coupled to each other.
Fig. 5 is a side sectional view of the blade portion of Fig. 4, wherein Fig. 5 (a) shows a state where the blade fixing portion is engaged with the blade supporting portion, and Fig.
Figure 6 is a perspective view of the arm of the retractor assembly of Figure 2;
Fig. 7 is a plan sectional view in the X direction in Fig. 6, Fig. 6 (a) shows a state in which the moving part fixing part is engaged with the moving part, and Fig.
Fig. 8 shows a side sectional view in the Y direction of Fig.
Fig. 9 shows a cross-sectional view taken along the Z direction in Fig.
10 is a perspective view of a frame portion of the retractor assembly of Fig. 2;
11 shows the retractor assembly coupled to the frame portion of FIG.
12 shows the elastic membrane of the retractor of Fig.
13 shows a state in which the blade portion is tilted with the elastic membrane of Fig. 12 mounted.
Figure 14 shows a conventional retractor for surgical operation.

Hereinafter, a retractor for surgical operation (hereinafter referred to as a "retractor") according to an embodiment of the present invention will be described with reference to the drawings. In the following description, well-known functions or constructions are not described in detail to avoid unnecessarily obscuring the subject matter of the present invention. And certain features shown in the drawings are to be enlarged or reduced or simplified for ease of explanation, and the drawings and their components are not necessarily drawn to scale. However, those skilled in the art will readily understand these details.

As shown in Figs. 1 and 2, the present retractor includes a frame 3 attachable to a surgical table and a plurality of retractor assemblies 100 mounted on the frame 3. FIG. 1 shows an exemplary embodiment in which four retractor assemblies 100 are mounted.

Each of the plurality of retractor assemblies 100 is largely composed of a blade member 1 and an arm 2.

3 to 5, the blade portion 1 includes a blade supporting portion 12 mounted on a tilting portion 23 of the arm portion 2 to be described later, and a blade supporting portion 12 slidably mounted on the blade supporting portion 12 A blade 11 and a blade fixing part 13 connected to the blade 11 and engaged or disengaged from the blade supporting part 12. [

The blade supporting portion 12 has a plurality of engaging grooves 121 formed on the inner rear surface thereof in the longitudinal direction of the blade supporting portion 12 (reference vertical direction in FIG. 5). The blade fixing part 13 has a locking step 131 on its back surface.

The engaging jaw 131 is engaged with the engaging groove 121 by a resilient force (first elastic member) 14, for example, a restoring force F1 of the spring (refer to FIG.

When the blade fixing portion 13 is engaged with the engagement protrusion 131 of the blade fixing portion 13 and the predetermined force is applied downwardly, the engagement portion of the blade supporting portion 12 To move relatively downward, but to move upward is constrained. 5, the upper side 1211 of the latching groove 121 is formed in a transverse direction (left and right direction in FIG. 5) perpendicular to the longitudinal direction of the blade supporting portion 12, The lower side 1212 of the latching groove 121 is inclined downward to the left so that it can be slidably moved when the latching jig 131 moves downward and the upper side 1212 of the latching groove 121 is moved upward (See Fig. 5 (a)).

Therefore, when it is necessary for the operator to support the incision part of the skin or the like deeper, the operator simply moves the blade 11 downward as necessary with respect to the blade supporting part 12. [ In order to reduce the length of the blade part 1, a force F2 in a direction opposite to the restoring force of the elastic member 14 is applied so that the engaging jaw 131 is disengaged from the engaging groove 121, (See Fig. 5 (b)).

On the other hand, the blade fixing portion 13 is rotatably connected to the blade 11 through the fixing pin 15. [

One end of the elastic member 14 is supported by the lower back surface of the blade fixing portion 131 while the other end of the elastic member 14 is supported by the fixing pin 15 as shown in 'A' And is supported on the member support 112.

The blades 11 are provided with wing portions 111 on both sides and the blade supporting portion 12 is formed with wing portion insertion grooves 122 into which the wing portions 111 are inserted. The wing portions 111 of the blades 11 are inserted into the wing portion insertion grooves 122 of the blade support portion 12 so that they can slide relative to each other.

As shown in FIGS. 3 and 6, the arm portion 2 includes a frame portion connecting portion 21, a moving portion 22, and a tilting portion 23. 7 is a plan sectional view in the X direction in Fig. 6, Fig. 8 is a side sectional view in the Y direction in Fig. 6, and Fig. 9 is a rear sectional view in the Z direction in Fig.

3 and 9, the frame connecting portion 21 is detachably fixed to the frame portion 3. More specifically, the frame connecting portion 21 includes an elastic member (second elastic member) A pair of holding members 212 which can be moved in a direction to be close to each other when a force in a direction opposite to the restoring force F3 of the elastic member 211 is applied, .

The frame connecting portion 21 includes a through groove 2131 having a clearance allowing the grip portion 212 to pass therethrough and allowing the grip portion 212 to move in the direction of approaching each other, And a connecting body portion 213 having a groove 2132 formed therein.

The practitioner compresses the elastic member 211 by applying a force in a direction in which the grip portions 212 are opposed to each other when the arm portion 2 is mounted on the frame 3, The grip portion 212 returns to the original position due to the restoring force of the elastic member 211 and the arm portion 2 is not released from the arm portion locking groove 31 of the frame 3 . Thus, the practitioner can simply mount or mount the arm 2 on the frame 3. [

Further, the arm portion 2 has a moving portion 22 slidably connected to the frame portion connecting portion 21.

Specifically, as shown in FIG. 7, the moving part 22 has a first plurality of grooves 221 formed on one side and a second plurality of grooves 222 formed on the other side. Here, the second plurality of grooves 222 allow the moving part 22 to move in one direction while being coupled with the engaging protrusion 2151, but restrict movement of the moving part 22 in the other direction. That is, it has the same structure as the engaging groove 131 of the blade fixing portion 13 and the engaging groove 121 of the blade supporting portion 12 already described.

The frame connecting portion 21 has a first gear 214 and a moving portion fixing portion 215 as shown in FIG.

The first gear 214 is provided at one side of the frame portion connecting portion 21 and can be rotated by engaging with the first plurality of grooves 221.

The moving part fixing part 215 is provided on the other side of the frame part connecting part 21 and is engaged with and engaged with the second plurality of grooves 222 by the restoring force of the elastic member (third elastic member) 216, And a hooking jaw 2151 for releasing the engagement with the second hooking groove 222 when the force F5 acts in the opposite direction to the restoring force F4 of the second hooking groove 216. [

3, 6 and 8, the arm portion 2 is provided with a tilting portion 23 which is tiltably mounted on the moving portion 22. [ The tilting portion 23 is provided with a worm wheel 232 engaged with a worm shaft 223 mounted on one end of the moving portion 22.

The operator rotates the worm shaft 223 when necessary so that the worm wheel 232 rotates in conjunction with the rotation of the worm shaft 223. Specifically, the worm gear 232 rotates the worm wheel 232 Is rotated. As a result, the tilting portion 23 is tilted (or pivoted) so that the blade portion 1 can be tilted as necessary as shown in FIG. Therefore, the surgeon can easily expand the incision to secure the surgical site.

Further, the tilting portion 23 may be formed with a fitting groove 231 into which the blade supporting portion 12 can be fitted.

On the other hand, the present retractor may further include an elastic membrane 4 surrounding or connecting the plurality of blade supports 12. Illustratively, Figs. 12 and 13 show the elastic membrane 4 mounted to surround the blade support 12. At this time, the elastic membrane 4 may be mounted on the elastic membrane mounting groove 123 of the blade supporting portion 12.

The elastic membrane 4 may be formed of a cylindrical film of a silicone rubber type, a mesh net made of a stretchable polymer material, or a mesh of a dense mesh in proportion to the strength of the elastic polymer material.

By doing so, it is possible to prevent the inflow of tissue between the blades during the operation, and thus it is possible to obtain an easy effect in securing the space.

Further, the retractor can secure a treatment space in four directions, for example, to minimize additional damage of the incision.

In addition, a plurality of blades have been conventionally prepared and used for various lengths depending on the operation method and the patient. However, when the retractor is used, the types of blades can be minimized through a telescopic blade.

Further, it is possible to easily and easily fasten or separate the frame portion, the arm portion, and the blade portion, thereby shortening the operation time and increasing the efficiency.

In addition, the retractor can be subjected to surface treatments such as durability, corrosion resistance, PVD coating for prevention of light reflection, and CrN coating.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of the right.

100 ... retractor assembly
1 ... blade portion, 11 ... blade
111 ... wing portion 112 ... elastic member support
12 ... blade supporting portion, 121 ... engaging groove
122 ... wing portion insertion groove, 13 ... blade fixing portion
131 ... engaging jaw, 14 ... elastic member (first elastic member)
15 ... a fixing pin, 2 ... an arm,
21: frame connecting portion, 211: elastic member (second elastic member)
212 ... grip portion, 213 ... connection portion body portion
2131 ... through groove, 2132 ... slide groove
214 ... first gear, 215 ... shifting portion fixing portion
2151 ... hanging jaw, 22 ... moving part
221 ... a first plurality of grooves, 222 ... a second plurality of grooves
223 ... worm shaft, 23 ... tilting portion
232 ... worm wheel, 3 ... frame,
4 ... elastic membrane

Claims (10)

A frame attachable to the operating table; and a plurality of retractor assemblies mounted on the frame,
Wherein each of the plurality of retractor assemblies includes:
An arm including a frame part connecting part detachably fixed to the frame part, a moving part slidably connected to the frame part connecting part, and a tilting part tiltingly mounted on the moving part, and
A blade supporting portion mounted on the tilting portion, a blade slidably mounted on the blade supporting portion, and a blade fixing portion connected to the blade and fixed to the blade supporting portion,
A surgical retractor. The method of claim 1,
Wherein the blade support portion has a plurality of engagement grooves formed in its longitudinal direction on an inner rear surface thereof,
Wherein the blade fixing portion has a catching jaw,
Wherein the engaging jaw is engaged with any one of the plurality of engaging grooves by a restoring force of the first elastic member, and when a force in a direction opposite to the restoring force of the first elastic member acts, Lt; RTI ID = 0.0 >
Surgical Retractor. 3. The method of claim 2,
The plurality of latching grooves are allowed to move downward in a state where the plurality of latching grooves are engaged with the latching jaws, but the upward movement is restricted
Surgical Retractor. 4. The method of claim 3,
Wherein the blade fixing portion is rotatably connected to the blade through a fixing pin,
One end of the elastic member is supported by the lower back surface of the blade fixing portion while the other end of the elastic member is supported by the elastic member support of the blade
Surgical Retractor. The method of claim 1,
Wherein the blade has wings on both sides thereof, and the blade supporting portion has a wing portion insertion groove into which the wing portion is inserted. The method of claim 1,
Wherein the frame-
A pair of grip portions which are respectively supported at both ends of the second elastic member and can be moved in a direction to be close to each other when a force in a direction opposite to the restoring force of the second elastic member acts,
A through-hole having a clearance through which the grip portion can move and the grip portion can move, and a slide groove in which the movement portion is slidable,
Containing
Surgical Retractor. The method of claim 1,
The moving part has a first plurality of grooves formed on one side and a second plurality of grooves on the other side,
Wherein the frame-
A first gear rotatably engaged with the first plurality of grooves on one side,
And the engagement with the second plurality of engagement grooves is released when a force in a direction opposite to the restoring force of the third elastic member acts on the other side of the second elastic member, The moving unit fixing unit
Having a
Surgical Retractor. 8. The method of claim 7,
While the second plurality of grooves are allowed to move in one direction in a state where the second plurality of grooves are engaged with the engaging jaws,
Surgical Retractor. The method of claim 1,
Wherein the moving unit includes a worm shaft at one end thereof,
Wherein the tilting portion includes a worm wheel engaged with the worm shaft,
The worm wheel is rotated in conjunction with the rotation of the worm shaft to tilt the tilting portion
Surgical Retractor. The method of claim 1,
Further comprising an elastic membrane surrounding or interconnecting the plurality of blade supports.

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