阅读说明：本技术 用于微创手术的单端口 (Single port for minimally invasive surgery ) 是由 李起焕 于 2020-10-08 设计创作，主要内容包括：本发明提供了一种用于微创手术的单端口,该单端口包括：具有盖引导件、第一环形凸缘以及把手打开/关闭把手的基部部分；具有第二环形凸缘、盖、以及多个引入通道的通道部分；用于将第二环形凸缘固定到第一环形凸缘的联结部分；具有筛管膜、外环以及内环的筛管部分；以及将筛管部分连接到基部部分的连接件部分。(The present invention provides a single port for minimally invasive surgery, the single port comprising: a base portion having a lid guide, a first annular flange, and a handle opening/closing handle; a channel portion having a second annular flange, a cover, and a plurality of inlet channels; a coupling portion for securing the second annular flange to the first annular flange; a screen section having a screen membrane, an outer ring, and an inner ring; and a connector portion connecting the screen portion to the base portion.)

1. A single port for minimally invasive surgery, comprising:

a base having a cover guide formed with a first through hole through which a surgical instrument passes, a first annular flange formed along an edge of the cover guide, and a plurality of grips formed on the first annular flange at predetermined intervals in a circumferential direction of the first annular flange, each grip having a hook protruding from a lower surface thereof toward a center of the base;

a channel unit having a second annular flange closely contacting an upper surface of the first annular flange, a cover connected to the second annular flange and covering the base, and a plurality of introduction channels protruding from the cover and allowing passage of a surgical instrument;

a coupling unit provided on an upper surface of the second annular flange and fixing the second annular flange to the first annular flange;

a wound retractor having a wound retractor membrane partially inserted into an incision in the abdomen of a patient and guiding a surgical instrument into the abdomen of the patient, an outer ring disposed on an upper portion of the wound retractor membrane, and an inner ring disposed on a lower portion of the wound retractor membrane; and

a connector disposed between the outer ring and the handle and connecting the wound retractor to the base.

2. The single port for minimally invasive surgery as set forth in claim 1, wherein the connector has a connector ring, a rib flange circumferentially protruding from an inner circumferential surface of the connector ring and closely contacting a lower surface of the outer ring, and a locking groove circumferentially formed on an outer circumferential surface of the connector ring and coupled to the hook.

3. The single port for minimally invasive surgery as set forth in claim 2, wherein the hooks are elastically deformed by being pushed by an outer circumferential surface of the connector ring when the connector is moved toward the base, expanded outward, and then restored to an original shape by an elastic restoring force to be coupled to locking grooves.

4. The single port for minimally invasive surgery of claim 1, further comprising:

an exhaust tube coupled at one end to the inner ring for location within the patient's abdominal cavity and at another end located outside the patient's abdominal cavity for directing gas to be exhausted from the patient's abdominal cavity,

wherein, the blast pipe includes discharge pipe and follows the extension rod of the one end of discharge pipe along diameter direction extension.

5. The single port for minimally invasive surgery of claim 4, wherein said inner ring includes:

a coupling hole formed through the inner ring in a height direction of the inner ring and allowing the discharge pipe to be inserted thereinto,

a slit formed by partially cutting off the inner ring and allowing the discharge pipe to be inserted through the coupling hole from the outside of the inner ring, and

a first insertion groove formed on a lower surface of the inner ring and allowing an extension bar to be inserted thereinto.

6. The single port for minimally invasive surgery according to claim 5, wherein the exhaust pipe further includes locking protrusions protruding from both ends of the extension rod toward one end of the exhaust pipe, and the inner ring further includes second insertion grooves formed at both ends of the first insertion groove and allowing the locking protrusions to be inserted thereinto.

7. The single port for minimally invasive surgery as recited in claim 1, wherein the base further has a coupler that radially protrudes from an outer peripheral surface of the first annular flange and is coupled to an infusion tube that guides supply gas infused into the abdominal cavity of a patient, and an inflow guide hole that is radially formed through the first annular flange to be connected to the coupler, the inflow guide hole guiding movement of supply gas introduced into the coupler to the interior of the first annular flange.

8. The single port for minimally invasive surgery as recited in claim 1, wherein the base further has an annular plate disposed along an outer peripheral surface of the first annular flange, the annular plate having a bend that defines a bend space, the handle being bendable into the bend space to separate the hook from the locking groove.

9. The single port for minimally invasive surgery of claim 1, wherein:

the first annular flange has a plurality of first coupling holes formed at predetermined intervals in a circumferential direction of the first annular flange;

the second annular flange having a plurality of second coupling holes corresponding to the first coupling holes; and

the coupling unit has a plurality of coupling protrusions coupled to the first coupling holes, respectively, through the second coupling holes.

10. The single port for minimally invasive surgery as recited in claim 9, wherein said first annular flange further has an alignment groove formed on an upper surface thereof, and said second annular flange further has an alignment protrusion formed on a lower surface thereof, such that said first coupling holes are respectively aligned with said second coupling holes when said alignment groove is coupled to said alignment protrusion.

11. The single port for minimally invasive surgery as recited in claim 1, wherein the inner ring has a guide groove formed on an outer circumferential surface thereof and deforming the inner ring into a straight line.

12. The single port for minimally invasive surgery as recited in claim 11, wherein the guide slot comprises a plurality of guide slots that are symmetrical to each other about a center of the inner ring.

13. The single port for minimally invasive surgery of claim 1, further comprising:

a port unit provided on an upper surface of each introduction channel and allowing a surgical instrument to pass therethrough, the port unit having: a socket coupled to an upper end of the introduction channel and having a first port hole through which a surgical instrument passes; a valve coupled to the socket and having a pair of sprung gates inserted into the first port hole, the pair of sprung gates adapted to open or close the first port hole; a cartridge coupled to the socket from above the valve to secure the valve and having a second port hole through which a surgical instrument passes; a sealing cover disposed on an upper surface of the core and having a third port hole through which a surgical instrument passes; and a cap coupled to the socket, accommodating the sealing cap and the core therein, and having a fourth port hole through which a surgical instrument passes.

14. The single port for minimally invasive surgery as recited in claim 13, wherein the receptacle further has a plurality of locking frames formed along a circumferential direction thereof, each locking frame having a locking hole, a seating hole formed between each pair of adjacent locking frames, and a first annular groove formed circumferentially below the locking frame, and the core further has a first fitting protrusion coupled to the locking hole and a seating protrusion coupled to the seating hole.

Technical Field

The present invention relates to a single port for minimally invasive surgery, and more particularly, to a single port for minimally invasive surgery, which provides enhanced usability during laparoscopic surgery.

Background

Generally, the laparoscopic surgery refers to a surgical operation of making a small incision (hole) in the abdomen, not making a large opening as in the conventional laparotomy, and filling an inflation gas, a camera, and various instruments in the abdominal cavity. Surgical instruments are inserted through the incision into the abdomen. Since the incision size is much smaller than conventional open surgery, laparoscopic surgery can ensure better surgical wound closure cosmetic results and less incision-induced pain. In addition, the laparoscopic surgery is faster to recover than the conventional open surgery, so the laparoscopic surgery has the advantages of short hospitalization time, fast recovery of daily life and the like.

To prevent damage to the incision site by surgical instruments and gas leakage from the incision, a separate port is provided at the incision.

However, since the conventional port is configured to guide only one surgical instrument, an incision needs to be made in the abdomen of the patient according to the number of necessary surgical instruments (gas injector, endoscope, forceps, scissors, etc.).

To solve this problem, a single port access device including one port having a plurality of sleeves is being developed. In particular, the conventional single port access device includes a rigid body contacting an incision of the abdomen, a plurality of cannulas provided on the body, a conduit formed on a lower surface of the body and inserted into the incision to closely contact a side surface of the incision, a gas inlet formed through the body and adapted for gas injection into the abdominal cavity therethrough, and a gas outlet adapted for gas exhaust from the abdominal cavity therethrough.

However, such a conventional single port for laparoscopic surgery has a problem in that the gas injection tube or the gas exhaust tube interferes with the view of the endoscopic camera or collides with the surgical instrument in a narrow space.

An example of the prior document is korean patent registration No. 1042305 (published 6/17/2011).

Disclosure of Invention

Technical problem

Embodiments of the present invention have been conceived to solve such problems in the art and provide a single port for minimally invasive surgery that provides enhanced usability during laparoscopic surgery.

It should be understood that aspects of the present invention are not limited to the above aspects. The above and other aspects of the present invention will become apparent to those skilled in the art from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings.

Technical scheme

According to an aspect of the present invention, there is provided a single port for minimally invasive surgery, comprising: a base having a cover guide formed with a first through hole through which a surgical instrument passes and a first annular flange along an edge of the cover guide, a plurality of grips formed on the first annular flange at predetermined intervals in a circumferential direction of the first annular flange, each grip having a hook protruding from a lower surface thereof toward a center of the base; a channel unit having a second annular flange closely contacting an upper surface of the first annular flange, a cover connected to the second annular flange and covering the base, and a plurality of introduction channels protruding from the cover and allowing a surgical instrument to pass therethrough; a connection unit provided on an upper surface of the second annular flange and fixing the second annular flange to the first annular flange; a wound retractor having a wound retractor membrane partially inserted into an abdominal incision of a patient and guiding a surgical instrument to be inserted into an abdominal cavity of the patient, an outer ring disposed at an upper portion of the wound retractor membrane, an inner ring disposed at a lower portion of the wound retractor membrane; and a connector disposed between the outer ring and the handle and connecting the wound retractor to the base.

The connector may have a connector ring, a rib flange circumferentially protruding from an inner circumferential surface of the connector ring and closely contacting a lower surface of the outer ring, and a locking groove circumferentially formed on an outer circumferential surface of the connector ring and connected to the hook.

In one embodiment of the present invention, once the connector is moved toward the base, the hooks may be elastically deformed to be expanded outward by being pushed by the outer circumferential surface of the ring of the connector, and then may be restored to their original shape by an elastic restoring force to be coupled to the locking grooves.

In one embodiment of the present invention, the single port for minimally invasive surgery may further comprise: an exhaust tube having one end connected to the inner ring for positioning within the patient's abdominal cavity and another end positioned outside the patient's abdominal cavity for directing gas to be exhausted from the patient's abdominal cavity, wherein the exhaust tube may include an exhaust tube and an extension rod extending diametrically from one end of the exhaust tube.

Further, the exhaust pipe may further include locking protrusions protruding from both ends of the extension rod toward one end of the discharge pipe.

The inner ring may include a connection hole formed through the inner ring in a height direction of the inner ring and allowing the discharge pipe to be inserted thereinto, and a slit formed by partially cutting away the inner ring and allowing the discharge pipe to be inserted into the connection hole from an outer side of the inner ring, and a first insertion groove formed on a lower surface of the inner ring and allowing the extension rod to be inserted thereinto.

In addition, the inner ring may further include second insertion grooves formed at both ends of the first insertion groove and allowing the locking protrusions to be inserted thereinto.

In one embodiment of the present invention, the base may further have an injection tube radially protruding from an outer circumferential surface of the first annular flange and connected to guide injection of gas into the abdominal cavity of the patient, and an inflow guide hole radially formed through the first annular flange to be connected to the coupler, the inflow guide hole guiding the supply gas introduced into the coupler to move into the first annular flange.

In one embodiment of the present invention, the base may further have an annular plate disposed along an outer circumferential surface of the first annular flange, wherein the annular plate may have a bent portion defining a bent space into which the handle may be bent to separate the hook from the locking groove.

In one embodiment of the present invention, the first annular flange may have a plurality of first coupling holes formed at predetermined intervals in a circumferential direction of the first annular flange, the second annular flange may have a plurality of second coupling holes corresponding to the first coupling holes, and the coupling unit may have a plurality of coupling protrusions, the plurality of connecting protrusions being connected to the first coupling holes through the second coupling holes, respectively.

In one embodiment of the present invention, the first annular flange may further have an alignment groove formed on an upper surface thereof, and the second annular flange may further have an alignment protrusion formed at a lower surface thereof, such that the first coupling holes may be aligned with the second coupling holes, respectively, when the alignment groove is coupled to the alignment protrusion.

In one embodiment of the present invention, the inner ring may have a guide groove formed on an outer circumferential surface thereof and allowing the inner ring to be deformed into a straight shape.

In one embodiment of the present invention, the guide groove may include a plurality of guide grooves symmetrical to each other with respect to the center of the inner ring.

In one embodiment of the present invention, the single port for minimally invasive surgery may further comprise: a port unit disposed on an upper surface of each of the introduction channels and allowing a surgical instrument to pass therethrough, the port unit having a socket coupled to an upper end of the introduction channel and having a first port hole through which the surgical instrument passes, a valve connected to the socket and having a pair of elastic gates inserted into the first port hole, the pair of elastic gates being adapted to open or close the first port hole, a core coupled to the socket from above the valve to fix the valve and having a second port hole through which the surgical instrument passes, a sealing cap disposed on an upper surface of the core and having a third port hole through which the surgical instrument passes, and a cap coupled to the socket, accommodating the sealing cap and the core therein, and having a fourth port hole through which the surgical instrument passes.

In one embodiment of the present invention, the socket may further have a plurality of locking frames formed in a circumferential direction thereof, each locking frame having a locking hole, a seating hole formed between each pair of adjacent locking frames, and a first annular groove formed circumferentially below the locking frame, and the core may further have a first fitting protrusion coupled to the locking hole and a seating protrusion coupled to the seating hole.

Advantageous effects

According to an embodiment of the invention, the coupling protrudes radially from a side surface of the base. Thus, an infusion tube connected to the coupler may extend laterally from a single port for performing minimally invasive procedures. This reduces the impact of the infusion tube with the surgical instrument and prevents the infusion tube from being compressed or twisted during the surgical procedure.

Further, according to the embodiment of the present invention, the discharge tube may be easily coupled and fixed to the inner ring by inserting the discharge tube into the coupling hole through the slit of the inner ring and inserting the extension bar and the locking protrusion into the first insertion groove and the second insertion groove, respectively. Further, even when the exhaust pipe is pulled upward, the exhaust pipe can be kept fixed to the inner ring without being separated from the inner ring.

Further, according to an embodiment of the present invention, the inner ring has a guide groove formed on an outer circumferential surface thereof. The guide slots allow the inner ring to deform into a nearly rectilinear shape when the inner ring is compressed by an external force, thereby facilitating insertion of the inner ring into an incision in the abdomen of a patient during laparoscopic surgery.

It is to be understood that the advantages of the present invention are not limited to the above, and also include any advantages that can be conceived from the features disclosed in the detailed description of the invention or the appended claims.

Drawings

FIG. 1 is a perspective view of a single port for minimally invasive surgery according to one embodiment of the present invention;

FIG. 2 is an enlarged cross-sectional view of the base of the single port for minimally invasive surgery of FIG. 1;

FIG. 3 is a perspective view of the base of the single port for minimally invasive surgery of FIG. 1;

FIG. 4 is a perspective view of the single-ported access unit of FIG. 1 for minimally invasive surgery;

FIG. 5 is a perspective view of the single-port coupling unit of FIG. 1 for minimally invasive surgery;

FIG. 6 is a perspective view of the single-ported wound retractor of FIG. 1 for minimally invasive surgery;

FIG. 7 is a perspective view of the single-port connector of FIG. 1 for minimally invasive surgery;

FIG. 8 is a perspective view of the inner ring of FIG. 7;

FIG. 9 is an assembled view of the inner ring and exhaust pipe of FIG. 8;

FIG. 10 is a cross-sectional view of the single-port unit of FIG. 1 for use in minimally invasive surgery;

fig. 11 is an exploded perspective view of the port unit in fig. 10.

Detailed Description

Reference will now be made in detail to the various embodiments, examples of which are illustrated in the accompanying drawings. It is to be understood that the present invention may be embodied in various forms and is not limited to the following examples. In the drawings, portions irrelevant to the description will be omitted for clarity. Throughout the specification, like parts will be denoted by like reference numerals.

Throughout the specification, when an element or layer is referred to as being "on," "connected to" or "coupled to" another element or layer, it may be directly on, connected or coupled to the other element or layer or intervening elements or layers may be present. Furthermore, unless otherwise indicated, the term "comprising" should be interpreted as not excluding the presence of other components than those listed herein.

The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, the terms "comprises," "comprising," "includes" and/or "including," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, components, and/or groups, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view of a single port for minimally invasive surgery according to one embodiment of the present invention. Fig. 2 is a sectional view of the single port for minimally invasive surgery of fig. 1, with a base of the single port enlarged, and fig. 3 is a perspective view of the base of the single port for minimally invasive surgery of fig. 1.

Referring to fig. 1 to 3, a single port for minimally invasive surgery includes a base 100, a passage unit 200, a coupling unit 300, a wound retractor 400, and a connector 500.

The base 100 may have a cap guide 110, a first annular flange 120, and a handle 130.

The cover guide 110 may have a first through hole 111, and a surgical instrument passes through the through hole 111. The surgical instrument may be an endoscope, forceps, scissors, or any other instrument used for surgery. The cover guide 110 may have a concave shape to easily guide the surgical instrument to the first through hole 111.

The first annular flange 120 may be formed along an edge of the cover guide 110. The first annular flange 120 may have a plurality of first coupling holes 121 formed on an upper surface thereof, wherein the first coupling holes 121 may be formed at predetermined intervals in a circumferential direction of the first annular flange 120.

Further, the first annular flange 120 may have a first rib 122 and a second rib 123. The first rib 122 may protrude from an upper surface of the first annular flange 120 along a circumference of the first annular flange 120. The second rib 123 may be formed on the upper surface of the first annular flange 120 along the edge of the first through-hole 111.

The handle 130 may include a plurality of handles 130, and the handles 130 are formed on the first annular flange 120 at predetermined intervals along the circumference of the first annular flange 120. The handle 130 may have a hook 131 protruding from a lower surface thereof toward the center of the first annular flange 120. The handle 130 may be resiliently flexible.

Further, the base 100 may have a coupler 150 and an inflow guide hole 151. The coupling 150 may radially protrude from the outer circumferential surface of the first annular flange 120. Coupling 150 may be coupled to an infusion tube 600 that directs a supply of gas for injection into the abdominal cavity of a patient. The inflow guide hole 151 may be radially formed through the first annular flange 120 and may be connected to the coupler 150. The supply gas delivered to the injection pipe 600 and the coupling 150 may move into the first annular flange 120 through the inflow guide holes 151 and then move through the first through holes 111. Since the coupling 150 radially protrudes from the outer circumferential surface of the first annular flange 120, the injection tube 600 may laterally extend from a single port for minimally invasive surgery. In this manner, collisions between the infusion tube 600 and surgical instruments may be reduced and the infusion tube 600 may be prevented from being compressed or distorted during surgery. Further, the coupling 150 may include a plurality of coupling holes 150, whereby the supply of the supply gas may be easily increased as needed.

Further, the base 100 may have an annular plate 140. The annular plate 140 may be disposed along an outer circumferential surface of the first annular flange 120. The ring plate 140 may have a bent portion 141 formed at a position corresponding to the handle 130. The bent portion 141 may be bent upward, thereby defining a bending space 142 between the handle 130 and the bent portion 141. The bending space 142 may be a space that allows the handle 130 to be bent upward. Further, the annular plate 140 may have a plurality of skirts 143, and the skirts 143 protrude from the lower surface of the annular plate 140 at predetermined intervals in the circumferential direction of the annular plate 140.

Preferably, the base 100 is formed of a material that is not excessively flexible while allowing the handle 130 to be elastically deformed, such as Polycarbonate (PC).

Fig. 4 is a perspective view of the single-ported channel unit for minimally invasive surgery of fig. 1.

With further reference to fig. 4, the channel unit 200 may have a second annular flange 210, a cover 220, and an introduction channel 230.

The diameter and width of the second annular flange 210 may correspond to the first annular flange 120. In addition, the second annular flange 210 may have a plurality of second coupling holes 211. The second coupling holes 211 may respectively correspond to the first coupling holes 121 and may be formed through the second annular flange 210.

The first annular flange 120 may also have an alignment groove 125 formed on an upper surface thereof, and the second annular flange 210 may have an alignment protrusion 215 formed on a lower surface thereof and coupled to the alignment groove 125. When the second annular flange 210 is closely contacted to the upper surface of the first annular flange 120, the alignment protrusions 215 are coupled to the alignment grooves 125, and the first coupling holes 121 may be aligned with the second coupling holes 211, respectively.

The cap 220 may be connected to the second annular flange 210. In the case where the second annular flange 210 is in close contact with the first annular flange 120, the cover 220 may cover the base 100.

The introduction channel 230 may protrude from the cover 220 and may include a plurality of introduction channels. Further, each introduction channel 230 may have a different height. The introduction channel 230 allows passage of surgical instruments. Since each introduction channel 230 has a different height, interference between surgical instruments can be reduced. The introduction passage 230 may have a stepped portion 231 formed at an upper end thereof.

The channel unit 200 may be formed of a material having a certain degree of flexibility, such as silicone or urethane.

Fig. 5 is a perspective view of the single-port coupling unit for minimally invasive surgery of fig. 1.

With further reference to fig. 5, the coupling unit 300 may have a pressure ring 310 corresponding in shape to the second annular flange 210 and a plurality of coupling protrusions 320 formed on a lower surface of the pressure ring 310 in a circumferential direction of the pressure ring. A space between each pair of adjacent coupling protrusions 320 may correspond to a space between each pair of adjacent second coupling holes 211. In addition, the coupling protrusions 320 may be fitted into the first coupling holes 121, respectively. The coupling unit 300 may be disposed on an upper surface of the second annular flange 210. In a state where the second annular flange 210 is closely contacted to the upper surface of the first coupling hole 121, the channel unit 200 may be securely connected to the base 100 when the coupling protrusion 320 is fixed to the first coupling hole 121 through the second coupling hole 211. In the case where the first annular flange 120 is in close contact with the second annular flange 210, the first and second ribs 122 and 123 of the first annular flange 120 are in close contact with the lower surface of the second annular flange 210, thereby enhancing the sealing between the first and second annular flanges 120 and 210. Preferably, the coupling unit 300 is formed of a material having a certain strength, such as Polycarbonate (PC).

Figure 6 is a perspective view of the single-ported wound retractor of figure 1 for minimally invasive surgery.

Referring to fig. 6, a wound retractor 400 may have a wound retractor membrane 410, an outer ring 420, and an inner ring 430.

The wound retractor membrane 410 may be a cylindrical elastic membrane. The wound retractor membrane 410 may be partially inserted into an incision in the abdomen of a patient to guide the insertion of surgical instruments into the abdominal cavity of the patient.

An outer ring 420 may be disposed on an upper portion of the wound retractor membrane 410 for positioning outside of the patient's abdominal cavity. An inner ring 430 may be disposed on a lower portion of the wound retractor membrane 410 for insertion into the abdominal cavity of a patient. Wound retractor 400 may be formed of urethane.

A connector 500 can be disposed between the outer ring 420 and the handle 130 to connect the wound retractor 400 to the base 100.

FIG. 7 is a perspective view of the single-ported connector of FIG. 1 for minimally invasive surgery.

With further reference to fig. 7, the connector 500 may have a connector ring 510, a rib flange 520, and a locking groove 530.

The rib flange 520 may protrude from the inner circumferential surface of the connector ring 510 in the circumferential direction of the connector ring 510. The outer ring 420 may be disposed inside the connector ring 510, and the rib flange 520 may closely contact the lower surface of the outer ring 420.

The locking groove 530 may be formed on the outer circumferential surface of the connector ring 510 in the circumferential direction of the connector ring 510. When the connector 500 is moved toward the lower portion of the base 100, i.e., toward the first annular flange 120, the hooks 131 are elastically deformed to be expanded outward by being pushed by the outer circumferential surface of the connector ring 510 with the outer ring 420 positioned inside the connector ring 510. The diameter of the outer circumferential surface of the connector ring 510 may increase toward the lower end thereof. In this way, when the link 500 is moved upward, the hook 131 may naturally expand outward. Then, when the hook 131 reaches the locking groove 530, the hook 131 is contracted to its original shape by an elastic restoring force to be coupled to the locking groove 530. When the hook 131 is coupled to the locking groove 530, the upper surface of the outer ring 420 closely contacts the lower surface of the first annular flange 120 of the base 100. Here, the outer ring 420 closely contacts the rib flange 520, the connector ring 510, and the first annular flange 120, thereby preventing gas leakage. According to the present invention, whenever the user pushes the connector 500 located under the base 100 toward the base 100, the hook 131 may be caught in the locking groove 530, thereby facilitating the coupling between the wound retractor 400 and the base 100.

When the user pulls the handle 130 upward with the hook 131 coupled to the locking groove 530, the handle 130 is bent into the bending space 142 and the hook 131 is released from the locking groove 530, resulting in the separation of the wound retractor 400 from the base 100. The bent portion 141 is formed above the handle 130 to allow the user to hold the bent portion 141 and the handle 130 together, thereby helping the user to easily bend the handle 130 upward.

With the hooks 131 coupled to the locking grooves 530, the skirt 143 of the base 100 closely contacts the outer circumferential surface of the connector ring 510 to help the base 100 to be concentric with the connector 500. The connector 500 may be made of Polycarbonate (PC).

Fig. 8 is a perspective view of the inner ring of fig. 7. Fig. 9 is an assembled view of the inner ring and the exhaust pipe in fig. 8.

Referring to fig. 8 and 9, the single port for minimally invasive surgery may further include an exhaust tube 700.

The lower end of the exhaust tube 700 may be connected to the inner ring 430 for positioning within the abdominal cavity of the patient. Further, the upper end of the exhaust tubing 700 may be located outside the patient's abdominal cavity. The exhaust tube 700 is used to direct gases out of the patient's abdominal cavity.

The exhaust pipe 700 may have a discharge pipe 710, an extension rod 720, and a locking protrusion 730.

The evacuation tube 710 may have a length sufficient to direct evacuation of gas from the patient's abdominal cavity.

An extension rod 720 may be extended in a diameter direction from the lower end of the discharge pipe 710. The locking protrusions 730 may be formed at both ends of the extension rod 720 and may protrude toward the upper end of the drain tube 710.

The inner ring 430 may have a coupling hole 432, a slit 433, a first insertion groove 434, and a second insertion groove 435.

The coupling hole 432 may be formed through the inner ring 430 in a height direction of the inner ring 430.

The slit 433 may be formed by partially cutting out the inner ring 430, i.e., the inner ring body 431, and may be connected to the coupling hole 432. The coupling hole 432 may be connected to the outside of the inner ring 430 through the slit 433 such that the discharge tube 710 may be inserted into the coupling hole 432 from the outside of the inner ring 430.

A first insertion groove 434 may be formed on the lower surface 431 of the inner ring 430 to allow the extension bar 720 to be inserted therein.

The second insertion groove 435 may be formed at both ends of the first insertion groove 434 to allow the locking protrusion 730 to be inserted therein.

By inserting the discharge pipe 710 into the coupling hole 432 through the slit 433 and inserting the extension rod 720 and the locking protrusion 730 into the first insertion groove 434 and the second insertion groove 435, respectively, the exhaust pipe 700 can be easily coupled and fixed to the inner ring 430 without the inner ring 430 having to be moved upward. That is, even when exhaust pipe 700 is pulled upward, exhaust pipe 700 may remain coupled to inner ring 430 without being separated from inner ring 430.

Further, the inner ring 430 may have a guide groove 437. The guide groove 437 may be formed on the outer circumferential surface of the inner ring 430. In a sectional view perpendicular to the height direction of the inner ring 430, the width of the inner ring 430 is reduced at a portion where the guide groove 437 is formed. The guide groove 437 allows the inner ring 430 to be deformed into a straight shape, more specifically, a shape close to a straight line, when the inner ring 430 is compressed by an external force. In laparoscopic surgery, the user compresses the inner ring 430 before inserting the inner ring 430 into an incision in the patient's abdomen. When the inner ring 430 is deformed into a nearly straight shape by the guide groove 437, the inner ring 430 can be inserted into the cutout more easily. The guide groove 437 may include a plurality of guide grooves, wherein the guide grooves 437 may be symmetrical to each other with respect to the center of the inner ring 430. As the number of the guide grooves 437 increases, the inner ring 430 may be deformed into a shape closer to a straight line.

Referring to fig. 1 and 2, a single port for minimally invasive surgery may further include a port unit 800. The port unit 800 may be disposed on an upper surface of the introduction channel 230 and may allow a surgical instrument to pass therethrough.

Fig. 10 is a sectional view of the port unit of fig. 9 for a single port for minimally invasive surgery, and fig. 11 is an exploded perspective view of the port unit of fig. 9.

With further reference to fig. 10 and 11, the port unit 800 may have a socket 810, a valve 820, a core 830, a sealing cap 840, and a cap 850.

The socket 810 may be coupled to an upper end of the introduction channel 230 and may have a first port hole 811 through which a surgical instrument passes. Specifically, the socket 810 may have a ring-shaped body 812, a first locking part 813 formed on a lower surface of the ring-shaped body 812, and a second locking part 814 formed on an upper surface of the ring-shaped body 812. The ring-shaped body 812 of the socket 810 may be inserted into the upper end of the introduction passage 230, and the first locking part 813 may be caught by the stepped portion 231 of the introduction passage 230 to prevent the socket 810 from being separated from the introduction passage 230. The second locking part 814 may closely contact the upper end of the introduction passage 230, and the socket 810 may be firmly coupled to the upper end of the introduction passage 230.

In addition, the receptacle 810 may have a first annular groove 815 and a locking frame 816. A first annular groove 815 may be formed on an upper surface of the second locking part 814 in a circumferential direction of the second locking part. The locking frame 816 may include a plurality of locking frames 816 formed in a circumferential direction of the receptacle 810, and each locking frame 816 has a locking hole 817 formed therethrough. In addition, the receptacle 810 may have a receptacle hole 818 formed between a pair of adjacent locking frames 816.

The valve 820 may be connected to an inner surface of the socket 810 and may have a third locking part 821 and a pair of elastic shutters 822.

The third locking part 821 may be formed at an upper surface of the valve 820 and may be seated on an inner surface of the second locking part 814 of the socket 810.

The pair of sprung gates 822 may be symmetrical to each other about the center of the valve 820. Each of the pair of the sprung gates 822 may be recessed toward the lower end thereof, and the lower ends of the pair of the sprung gates 822 may be in close contact with each other.

The valve 820 may be formed of silicone. When the pair of the elastic shutter 822 is in its initial state, the lower ends of the pair of the elastic shutter 822 may be in close contact with each other. When the pair of the elastic shutter 822 is subjected to an external force, the pair of the elastic shutter 822 is deformed such that the lower ends of the pair of the elastic shutter 822 are separated from each other. In this manner, the pair of elastic shutters 822 can be switched between the open position and the closed position.

Further, the valve 820 may have a rigid rib 823 formed along the lower end of the pair of elastic gates 822. The rigid ribs 823 may be integrally formed with the pair of sprung gates 822. The rigid rib 823 provides a restoring force that brings the lower ends of the pair of elastic gates 822 into close contact with each other, and reduces the risk of damaging the lower ends of the pair of elastic gates 822 when the pair of elastic gates 822 are moved to the open position.

The core 830 may be coupled to the socket 810 from above the valve 820 to secure the valve 820, and may have a second port hole 831 through which a surgical instrument passes. Specifically, the core 830 may have a fourth locking part 834 protruding from a lower end thereof. The fourth locking part 834 may be coupled to an inner surface of the third locking part 821 of the valve 820 to fix the valve 820. In addition, the core 830 may have a plurality of first fitting protrusions 832 having a space therebetween formed in a circumferential direction thereof and a seating protrusion 833 formed between each pair of adjacent first fitting protrusions 832. The first fitting protrusions 832 may respectively correspond to the locking holes 817 of the receptacle 810, and the seating protrusions 833 may correspond to the seating holes 818 of the receptacle 810. That is, the first fitting protrusion 832 may be coupled to the locking hole 817 and the seating protrusion 833 may be coupled to the seating hole 818, while the core 830 may be securely coupled to the socket 810. The core 830 may have a second annular groove 835 circumferentially formed on an outer circumferential surface thereof.

The sealing cover 840 may be disposed on the upper surface of the core 830 and may have a sealing film 841. The sealing film 841 may be downwardly recessed and may be formed at the center thereof with a third port hole 842 through which a surgical instrument passes. The sealing cover 840 may have a fifth locking part 843 formed in a circumferential direction thereof and coupled to the second annular groove 835 of the socket 810.

The cap 850 may be coupled to the socket 810 and may receive the seal cover 840 and the core 830 therein. The cap 850 may have a fourth port hole 851 through which surgical instruments pass. The cap 850 may have a second fitting protrusion 852 formed on an inner surface of a lower end thereof. The second fitting protrusion 852 may be coupled to the first annular groove 815 of the socket 810, and the cap 850 may be securely coupled to the socket 810.

A surgical instrument introduced into the fourth port hole 851 of the cap 850 may be inserted into the introduction passage 230 through the third port hole 842 of the sealing cover 840, the second port hole 831 of the core 830, the pair of elastic shutters 822 of the valve 820, and the first port hole 811 of the socket 810. The pair of elastic shutters 822 may closely contact the outer circumferential surface of the surgical instrument by elastic restoring force, thereby preventing gas leakage.

Although some embodiments have been described herein, it should be understood that they have been presented by way of illustration only, and not limitation, and that various modifications, changes, substitutions, and equivalents may be made by those skilled in the art without departing from the spirit and scope of the invention. For example, components described as being implemented separately may also be implemented in combination and vice versa.

The scope of the present invention is indicated by the appended claims, and all changes or modifications derived from the meaning and scope of the claims and equivalents thereof should be construed as falling within the scope of the present invention.

INDUSTRIAL APPLICABILITY

Laparoscopic surgery uses a single port access device including one port with multiple cannulae to ensure minimally invasive surgery. In particular, the single port for minimally invasive surgery according to the present invention provides enhanced ease of use and may be widely used for robotic surgery as well as simple laparoscopic surgery.