KR101525126B1 - Troca assembly - Google Patents

Abstract

Disclosed is a trocar assembly. The trocar assembly according to the present invention comprises: a head housing which is vertically penetrated; a lip valve which is configured to be opened when inserting a laparoscopic surgical tool thereto and closed when separating the laparoscopic surgical tool therefrom and which is inserted into the head housing; and a gas sealing stopper which is formed with a through-hole through which the laparoscopic surgical tool is inserted and disposed on an upper side of the lip valve so as to prevent a leakage of gas inserted into a body to the outside thereof when the lip valve is opened depending on an insertion of the laparoscopic surgical tool, wherein at least a part of the gas sealing stopper is configured to pivot around the head housing, when the laparoscopic surgical tool moves, while maintaining a sealed state. According to the present invention, the laparoscopic surgical tool is inserted into the trocar assembly to conduct an operation, and the gas sealing stopper closely coupled to the laparoscopic surgical tool is transformed to be movable. Accordingly, the operation can be easily conducted by expanding the range where the laparoscopic surgical tool can be moved and not necessarily forming a large through hole of the gas sealing stopper, thereby effectively preventing a leakage of gas to the outside thereof.

Description

A trocar assembly {TROCA ASSEMBLY}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a trocar assembly, and more particularly, to a trocar assembly that enables an operation of a laparoscopic surgical instrument to be easily performed, with the function of a gas sealer preventing gas leakage effectively performed.

Unlike conventional laparotomy, laparoscopic surgery is being performed to minimize the incision of the skin and to restore the patient 's speed.

This laparoscopic operation is a surgical procedure performed by observing the operation site of the abdominal cavity by making a tube through the abdomen of the patient using a surgical apparatus called a trocar (Trocar) and introducing a surgical instrument such as an endoscope into a surgical site in the abdominal cavity, , Biliary stones removal, head protrusion, general surgery and so on.

Here, Trocar refers to a medical instrument used to access the abdominal cavity. The trocar includes a sleeve inserted and fixed into the body through a navel or a skin incision of the patient, and a sleeve inserted through the sleeve to insert a laparoscopic surgical instrument And a body coupled to an upper end of the externally exposed sleeve.

Meanwhile, a head for inserting various laparoscopic surgical instruments is provided in the main body. Inside the head, a silicone material lip for preventing the gas injected into the patient's body from leaking to the outside, Valve or the like is inserted.

However, since the conventional trocar head does not include a separate structure for protecting the lip valve, there is a problem that when the laparoscopic surgical instrument is inserted, the lip valve is easily broken by the sharp end of the instrument for laparoscopic surgery do.

In addition, on the upper side of the conventional trocar head, there is provided a gas leakage prevention valve formed by overlapping a trapezoidal silicon film in addition to a lip valve. Such a gas leakage prevention valve causes a lot of resistance when inserting a laparoscopic surgical instrument, There is a problem that becomes an obstacle to prevent smooth insertion or movement of the laparoscopic surgical instrument.

Korean Patent No. 10-1319970, filed and registered by the applicant of the present invention, discloses a " trocar head assembly ", specifically, a head housing having a hollow cylindrical shape; A lip valve which opens when inserting a laparoscopic surgical instrument and which is inserted into the interior of the head housing for closing when a laparoscopic surgical instrument is detached; A gas seal disposed above the lip valve to prevent gas injected into the body from leaking to the outside when the lip valve is opened according to the insertion of the laparoscopic surgical instrument; And a lip valve protection unit interposed between the lip valve and the gas enclosure to minimize the insertion resistance occurring when the laparoscopic surgical instrument is inserted, while preventing the lip valve from being damaged by the end of the laparoscopic surgical instrument Thus, it is possible to effectively prevent the insertion resistance generated when the instrument for laparoscopic surgery is inserted while preventing breakage of the lip valve.

However, in the trocar head assembly disclosed in Korean Patent No. 10-1319970, a circular ring-shaped gas hermetically sealed state is maintained between the head housing and the cover, and the gas hermetic body protection unit The structure of the laparoscopic surgical instrument inserted into the trocar head assembly is very limited and the leakage of the gas through the gas tight body is difficult to perform. .

That is, even if the gas hermetically sealing member is elastically deformed, it is fixed between the head housing and the cover so that the amount of deformation in the centrifugal direction is small and the moving radius of the laparoscopic instrument is limited. To solve this problem, the through- In this case, there is a problem that leakage of gas is not properly prevented.

In addition, since the gas-tight enclosure protecting unit is disposed in a laminated form on the upper side of the gas-tight enclosure, the movement of the apparatus for laparoscopic surgery is also restricted by the gas enclosure protecting unit.

(0001) Korean Patent No. 10-1319970 (Published on October 17, 2013)

It is an object of the present invention to provide a laparoscopic surgical instrument having a laparoscopic surgical instrument and a laparoscopic surgical instrument which are capable of effectively preventing the gas hermetically sealed body from being leaked and damaging the gas hermetically sealed body, So that the laparoscopic surgery can be easily performed.

The object is achieved by a head device comprising: a head housing vertically penetrating; A lip valve which is opened when inserting a laparoscopic surgical instrument and is closed when the laparoscopic surgical instrument is separated, the lip valve being inserted into the head housing; And a laparoscopic surgical instrument for inserting a laparoscopic surgical instrument into the laparoscopic surgical instrument, the laparoscopic surgical instrument being inserted into the laparoscopic surgical instrument, Wherein the gas confinement is configured such that when the laparoscopic surgical instrument moves, at least a portion of the gas confinement is deformed and moved relative to the head housing while maintaining a closed state. Lt; / RTI >

The gas enclosure may further include: a through-hole through which the through-hole is formed; A rim wall extending upward from the rim of the through-film; And an upper ring formed along the upper rim of the rim wall, wherein the rim and rim walls are resiliently deformed against the upper ring.

In addition, the trocar assembly according to the present invention is characterized in that, when inserting the laparoscopic surgical instrument, the gas mantle disposed inside the gas insulator, And may further comprise a protection unit.

Wherein the gas hermetic body protection unit comprises: a hollow hoop frame disposed on the upper side of the through-hole; And a plurality of wings fixed at one end to the hoop frame and deformed downward when the laparoscopic surgical instrument is inserted and folded laterally.

The plurality of wings may overlap each other to cover the penetrating membrane.

Further, the rim wall may include a lower rim wall to which the outer circumferential surface of the hoop frame closely contacts; A latching protrusion protruding inwardly from above the lower rim wall to fix the gas mantle protection unit on the lower rim wall; And an upper edge wall formed on the upper side of the engaging projection.

Further, the rim wall may further include a protrusion protruding downward from an inner end of the locking protrusion.

The trocar assembly according to the present invention comprises: an enclosure fixing unit for supporting a lower end of the upper ring; And a cover having an insertion hole formed at the center for insertion of the laparoscopic surgical instrument, and a cover coupled to the enclosure fixing unit and detachably coupled to the head housing.

At this time, a fitting groove into which the upper ring and the enclosure fixing unit are inserted may be formed in the cover around the insertion hole.

The trocar assembly according to the present invention may further comprise a hollow pipe-shaped sleeve coupled to the underside of the head housing.

The trocar assembly according to the present invention further comprises a lip valve retaining ring formed along the rim of the lip valve above the lip valve and coupled to the inside of the head housing to fix the lip valve to the head housing Lt; / RTI >

According to the present invention, when the laparoscopic surgical instrument is inserted into the trocar assembly, the gas seal which is tightly coupled with the laparoscopic surgical instrument is deformed and moved so that the range of movement of the laparoscopic surgical instrument So that it is not necessary to form the through-hole of the gas-tight material unnecessarily large, and it is also possible to effectively prevent the gas from leaking to the outside.

1 is a perspective view illustrating a trocar assembly according to one embodiment of the present invention,
Figure 2 is an exploded perspective view of the trocar assembly shown in Figure 1,
Figure 3 is a cross-sectional view of the trocar assembly shown in Figure 1,
Fig. 4 is a perspective view showing the gas mantle and the gas mantle protection unit shown in Fig. 2,
FIG. 5 is a view showing the use state of the trocar assembly shown in FIG. 1,
6 is a cross-sectional view of a trocar assembly according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the well-known functions or constructions are not described in order to simplify the gist of the present invention.

1 is a perspective view showing a trocar assembly 1 according to an embodiment of the present invention, FIG. 2 is an exploded perspective view showing a trocar assembly 1 shown in FIG. 1, and FIG. 3 is a cross- 4 is a perspective view showing the gas enclosure 30 and the gas enclosure protection unit 40 shown in Fig. 2, and Fig. 5 is a perspective view showing the gas enclosure 30 and the gas enclosure protection unit 40 shown in Fig. 1 shows the use state of the illustrated trocar assembly 1. Fig.

The trocar assembly 1 according to the present invention is used for laparoscopic surgery and is configured such that a portion (sleeve 70) can be inserted into the body through the navel or skin incision of the patient, and the trocar assembly 1 ) Is inserted into the laparoscopic instrument for surgery.

Hereinafter, the trocar assembly 1 according to the present invention will be described by defining the upward or downward direction based on the shape shown in FIG.

A trocar assembly 1 according to the present invention comprises a head housing 10, a lid valve 20 and a gas enclosure 30 and is also provided with a gas enclosure protection unit 40, (50), a cover (60) and a sleeve (70).

The sleeve 70 made of a hollow pipe is formed in a longitudinally elongated cylindrical shape, and means for inserting a surgical instrument and connecting a gas pipe are coupled to the upper side of the sleeve 70.

The sleeve 70 allows the laparoscopic surgical instrument inserted through the trocar assembly 1 to be inserted therethrough and inserted through the interior of the body through the navel or skin incision of the patient.

As shown in FIG. 1, a threaded portion 71 is formed on the outer circumferential surface of the hollow cylindrical body of the sleeve 70. The threaded portion 71 may be continuously formed around the body of the sleeve 70 so that the sleeve 70 itself can be inserted into the body while being rotated.

In the trocar assembly 1 according to the present invention, the threaded portion 71 is formed by a double line (two-wire or three-threaded screw) so that the sleeve 70 can be inserted with a small number of revolutions when the sleeve 70 is inserted by turning. .

In the conventional trocar, the sleeve 70 is manufactured by a method in which the outer circumferential surface has a smooth hollow cylindrical shape or a protrusion is provided on the outer circumferential surface so as to have a certain fixing force in a state of being inserted into the body. 70 have a problem in that they are not only convenient for insertion or firmness of fixing but can not simultaneously provide convenience of insertion and firmness of fixing. In the present invention, the threaded portion 71 is easily inserted into the body of the patient So that it can be stably fixed.

Meanwhile, the trocar assembly 1 according to the present invention can be used in combination with a separate device (not shown) that is fixed (attached) to the body before the sleeve 70 is inserted into the body, And a thread corresponding to the threaded portion 71 of the sleeve 70 is formed on the inner circumferential surface of the separate device so that the separate device and the sleeve 70 can be screwed together have. At this time, it is preferable that the sleeve 70 is formed in a fixed form (it is made of a rigid material, not elastically deformable or warpable).

When the insertion depth of the sleeve 70 is required to be adjusted according to the insertion depth of the laparoscopic surgical instrument inserted at the time of surgery, the separate device attached to the body is gripped, and when the sleeve 70 is rotated, So that the sleeve 70 smoothly moves up and down.

As described above, in the trocar assembly 1 according to the present invention, the sleeve 70 can be finely adjusted in height, and the insertion of the sleeve 70 can be performed while keeping the stable fixing of the sleeve 70, The depth adjustment is performed.

The head housing 10 is coupled to the upper end of the externally exposed sleeve 70 so that a laparoscopic surgical instrument can be inserted therethrough and disposed through the sleeve 70, And is formed in the shape of a cylinder passing through in a generally vertical direction.

One end of the head housing 10 is coupled with a gas insertion tube 12 communicating with the inside of the sleeve 70 so that carbon dioxide can be supplied to the gas insertion tube 12 to allow carbon dioxide to be injected into the body. The gas insertion tube 12 may be made of a material such as plastic, or may be made of a flexible material that is elastically deformed and flexibly bent.

The gas inlet tube 12 is provided with a valve 13 for controlling whether the gas inlet tube 12 is open or closed.

A first engaging projection 11 for engaging with the cover 60 is protruded from one side of the upper edge of the head housing 10. As shown in Fig. 2, the first coupling protrusions 11 may be provided in two or more.

The lip valve 20 is inserted and fixed in the head housing 10 and is opened when the laparoscopic surgical instrument is inserted and closed when the laparoscopic surgical instrument is separated so that the gas injected into the body is not leaked to the outside.

For this purpose, the lip valve 20 is made of silicon or the like having its own elasticity, and a plurality of cut-outs 21 are formed in the center of the lip valve 20. [ At this time, it is preferable that the incision 21 is radially formed at the center of the lip valve 20.

In the state where the external force is not applied, the incision 21 of the lip valve 20 is maintained in a state in which the laparoscopic surgical instrument is in close contact with or close to the laparoscope, and the laparoscopic surgical instrument is inserted The laparoscopic surgical instrument will penetrate the lip valve 20 while flaring at the incision 21.

3), and an upper edge of the lip valve 20 is seated in the seating jaw 14 (see Fig. 3), and the upper lip of the lip valve 20 is seated in the seating jaw 14 A lip valve retaining ring 80 formed along the upper edge of the lip valve 20 is coupled to the interior of the head housing 10 such that the lip valve retainer ring 80 allows the lip valve 20 to be inserted into the head housing 10 So as to be stably fixed in the inside thereof.

The gas-tight body 30 is for preventing the gas injected into the body from leaking to the outside when the lip valve 20 is opened according to the insertion of the laparoscopic surgical instrument. That is, even when the lip valve 20 is opened by the gas hermetically sealed body 30 that is closely attached to the outer peripheral surface of the laparoscopic surgical instrument inserted through the through hole 31a, the gas injected into the patient's body leaks to the outside . Like the lip valve 20, the gas enclosure 30 is made of a silicon material.

The gas enclosure 30 according to the present invention is divided into the penetrating film 31, the rim wall 32, and the upper ring 33, and is integrally formed as a whole.

The through-hole 31 is the lowermost portion of the gas-tight material 30, is formed in the form of a thin film, and a through-hole 31a penetrating in the vertical direction is formed at the center of the through- The through hole 31a is smaller than the diameter of a commonly used laparoscopic surgical instrument A so that when the laparoscopic surgical instrument A is inserted, the through hole 31 is elastically deformed, Hole 31a) is brought into close contact with the laparoscopic surgical instrument A.

The rim wall 32 is a portion extending upward from the outer edge of the through-hole 31, and may be formed in a substantially cylindrical shape. The upper edge of the rim 32 has a length sufficient to allow the through-hole 31 to move with respect to the upper ring 33 (see Fig. 5) It is preferable that the diameter is equal to or larger than the diameter.

 The rim wall 32 is divided into a lower rim 32a, a locking ridge 32b, and an upper rim 32c.

The lower edge wall 32a is connected to the through-hole 31 and is formed in a generally cylindrical shape and accommodates the gas enclosure protection unit 40 inside the lower edge wall 32a. The lower edge wall 32a has a diameter smaller than or equal to that of the upper edge wall 32c so that smooth movement of the lower edge wall 32a in the head housing 10 can be ensured. 3 and 5)

The locking protrusion 32b protrudes inward from the upper side of the lower rim wall 32a and fixes the gas mantel protection unit 40 on the lower rim wall 32a. That is, the locking protrusion 32b is formed in the shape of a band protruding inward in the circumferential direction of the rim wall 32, and the gas mantle protection unit 40 is caught by the locking protrusion 32b, ).

The upper edge wall 32c extends upwardly from the lower edge wall 32a integrally with the locking projection 32b and has a generally cylindrical shape and is connected to the upper ring 33 at the upper end. It is preferable that the thickness of the upper edge wall 32c is smaller than the thickness of the lower edge wall 32a so that the movement of the through film 31 with respect to the upper ring 33, The deformation of the portion of the through-hole 31 can be reduced while smoothly performing the deformation (see Figs. 5 (a) and 5 (b)).

The upper ring 33 is formed in the shape of an expanded diameter at the upper end of the upper edge wall 32c, and is formed in the shape of a circular ring.

The gas confinement protection unit 40 is disposed inside the gas tight body 30 and particularly when the gas confinement body 30 is damaged by the end of the laparoscopic surgical instrument A upon insertion of the laparoscopic surgical instrument A, The gas-tight material 30 is bonded on the upper side of the penetrating film 31 so as to prevent the gasket 30 from being damaged.

That is, when the laparoscopic surgical instrument (A) is inserted into the trocar assembly (1), the insertion end of the laparoscopic surgical instrument (A) is prevented from being in direct contact with the soft gas- .

The gas enclosure protection unit 40 is made of a harder material than the gas enclosure 30 (the gas enclosure protection unit 40 may also be made of a silicon material, Or made of hard silicon), and a synthetic resin capable of being elastically deformed. The gas enclosure protection unit 40 is divided into a hoop frame 41 and a plurality of wing portions 42.

The hoop frame 41 is formed in a generally cylindrical shape and its outer peripheral surface is in close contact with the rim 32 of the gas-tight body 30, particularly the inner peripheral surface of the lower rim wall 32a, Or close to the bottom surface. That is, the FOUP frame 41 is fixed in position by the penetrating film 31, the lower frame wall 32a and the locking projection 32b.

One end of the wing portion 42 is fixed to the FOUP frame 41 and is located inside the FOUP frame 41. The wing portion 42 is deformed downwardly when inserted into the laparoscopic surgical instrument A and folded laterally. The wing portion (42) is integrally formed with the FOUP frame (41). The plurality of wing portions 42 are repeatedly formed along the circumferential direction of the FOUP frame 41 to form the bottom surface of the gas mantle protection unit 40 and the plurality of wing portions 42 are bent downward .

The plurality of wing portions 42 overlap each other in a state in which no external force is applied (a state in which the laparoscopic surgical instrument A is not inserted) and cover the upper surface of the through-hole 31 except for the central portion. A hole 43 for exposing the through hole 31a of the gas tight body 30 is provided at the center of the plurality of wing portions 42.

The wing portion 42 prevents direct penetration of the penetration membrane 31 which is the bottom surface of the gas mantle 30 when the laparoscopic surgical instrument A is inserted into the gas tight body 30, So that the end portion of the application mechanism A is inserted into the through hole 31a.

As described above, in the trocar assembly 1 according to the present invention, the gas-tight enclosure protection unit 40 is accommodated in the gas-tight enclosure 30 in the form of being stacked on the upper side of the penetration membrane 31, The penetrating membrane 31 (including the lower rim wall 32a) and the gas confinement protection unit 40 can move together with each other as a reference, thereby extending the moving range of the laparoscopic surgical instrument A, Therefore, laparoscopic surgery can be performed more easily.

The enclosure fixing unit 50 fixes the gas enclosure 30 to the cover 60 so that the upper ring 33 portion of the gas enclosure 30 is fixed to the cover 60.

The enclosure fixing unit 50 is made of a material such as plastic that can be fixed in shape and is divided into an upper portion 51, a central portion 52 and a lower portion 53. [

The upper side portion 51 is in the form of a circular ring, and the upper end surface is in close contact with the bottom surface of the upper ring 33.

The central portion 52 is bent downward at the outer end of the upper portion 51 and is formed in a generally cylindrical shape. The inner surface of the central portion 52 is spaced apart from the rim 32 of the gas mantle 30 so as not to interfere with the movement of the gas mantle 30. [ A second engaging projection (54) protruding outward is formed at one side of the outer peripheral surface of the central portion (52).

The lower portion 53 is formed in a shape that the diameter of the lower portion 53 is extended along the lower edge of the central portion 52 and the upper portion of the lower portion 53 is formed with an o- (55) are fitted and engaged.

The cover 60 forms the uppermost portion of the trocar assembly 1, and an insertion hole 67 is formed at the center of the cover 60 so as to be inserted into the laparoscopic surgical instrument.

Specifically, the cover 60 is divided into an inner wall 61, an outer wall 62, and an upper surface 63.

The inner space of the inner wall 61 becomes the insertion hole 67 and the inner diameter of the inner wall 61 (the diameter of the insertion hole 67) becomes larger than the inner diameter of the gas enclosure 30 and the enclosure fixing unit 50 Lt; / RTI > size.

The upper surface 63 is a portion connecting the inner wall 61 and the upper end of the outer wall 62.

The outer wall 62 is spaced apart from the inner wall 61 to surround the inner wall 61 and the fitting groove 64 is provided by the space between the inner wall 61 and the outer wall 62. The upper ring 33 and the enclosure fixing unit 50 are inserted into the fitting grooves 64 of the cover 60 and the gas enclosure 30, the enclosure fixing unit 50, Lt; / RTI >

The cover 60 and the gas tight body 30 are engaged with each other in such a manner that the upper ring 33 of the gas tight body 30 and the enclosure fixing unit 50 are inserted into the fitting groove 64, It is possible to effectively prevent the surgical instrument from contacting the rim wall portion 32 of the gas-tight body 30, thereby preventing the gas-tight body 30 from being damaged.

A first engaging groove 65 is formed in the lower edge of the cover 60, particularly the lower edge of the outer wall 62, for engaging the head housing 10 with the first engaging projection 11 inserted therein .

The cover 60 is fastened to the enclosure fixing unit 50. The cover 60 is fixed to one side of the rim of the outer wall 62 by a second engaging groove (not shown) in which the second engaging protrusion 54 of the enclosure fixing unit 50 is fitted 66 are formed.

6 is a cross-sectional view illustrating a trocar assembly 1 according to another embodiment of the present invention.

In the trocar assembly 1 according to the present invention, the rim wall 32 further comprises a protection protrusion 32d.

The protrusion protrusion 32d protrudes downward from the inner end of the locking protrusion 32b and is formed in the shape of a band protruding downward along the circumferential direction of the protrusion 32b.

The protective protrusion 32d allows the upper end portion of the FOUP frame 41 of the protection unit 40 to be more effectively covered from above. That is, the protection protrusion 32d more effectively fixes the gas mantle protection unit 40 on the lower rim wall 32a, and prevents the gas mantle protection unit 40 from being detached outside the gas mantle 30 do.

As described above, according to the trocar assembly 1 of the present invention, when the laparoscopic surgical instrument A is inserted into the trocar assembly 1, The operation of the laparoscopic surgical instrument A is facilitated by enlarging the range of movement of the laparoscopic surgical instrument A and the operation of the laparoscopic surgical instrument A is facilitated and the through hole 31a of the gas closure body 30 It is not necessary to form it unnecessarily large, and it is also possible to effectively prevent the gas from leaking to the outside.

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 embodiments, but, on the contrary, It is obvious to those who have. Accordingly, it should be understood that such modifications or alterations should not be understood individually from the technical spirit and viewpoint of the present invention, and that modified embodiments fall within the scope of the claims of the present invention.

1: trocar assembly 10: head housing
11: first coupling projection 12: gas insertion tube
13: valve 20: lip valve
30: gas enclosure 31: penetrating membrane
31a: through hole 32: rim wall
32a: Lower edge wall 32b:
32c: upper edge wall 32d: protective projection
33: upper ring
40: gas enclosure protection unit 41: hoop frame
42: Wing part 50: Enclosure fixing unit
54: second engaging projection 60: cover
61: inner side wall 62:
63: upper surface 64:
65: first engaging groove 66: second engaging groove
70: Sleeve 71:
80: Lip valve retaining ring

Claims (11)

A head housing vertically penetrating the head housing;
A lip valve which is opened when inserting a laparoscopic surgical instrument and is closed when the laparoscopic surgical instrument is separated, the lip valve being inserted into the head housing; And
The laparoscopic surgical instrument according to any one of claims 1 to 3, wherein the laparoscopic surgical instrument is inserted into the laparoscopic surgical instrument. And a gas enclosure disposed therein,
Wherein the gas confinement structure is configured such that at least a part of the gas confinement structure is deformed and moved relative to the head housing when the laparoscopic surgical instrument moves,
The gas-
A through-hole through which the through-hole is formed;
A rim wall extending upward from the rim of the through-film; And
And an upper ring formed along the upper edge of the rim wall,
Wherein the through-membrane and the rim wall are resiliently deformed against the upper ring. delete The method according to claim 1,
Further comprising a gas hermetic body protection unit disposed inside the gas hermetic body so as to prevent the gas hermetic body from being damaged by the end of the laparoscopic surgical instrument when the laparoscopic surgical instrument is inserted. A trocar assembly. The method of claim 3,
The gas enclosure protection unit may include:
A hollow hoop frame disposed above the through-film; And
And a plurality of wings fixed at one end to the hoop frame and adapted to be deformed downward when the laparoscopic surgical instrument is inserted and folded laterally. 5. The method of claim 4,
Wherein the plurality of wings overlap each other to cover the through-membrane. 5. The method of claim 4,
The edge wall
A lower frame wall to which the FOUP frame outer peripheral surface is closely attached;
A latching protrusion protruding inwardly from above the lower rim wall to fix the gas mantle protection unit on the lower rim wall; And
And an upper rim wall formed on the upper side of the engaging projection. The method according to claim 6,
The edge wall
Further comprising a protrusion protruding downward from an inner end of the latching protrusion. The method according to claim 1,
An enclosure fixing unit for supporting a lower end of the upper ring; And
Further comprising a cover having an insertion hole formed at the center thereof for insertion of the laparoscopic surgical instrument, and a cover coupled with the enclosure fixing unit and detachably coupled to the head housing. 9. The method of claim 8,
Wherein the cover is formed with a fitting groove into which the upper ring and the enclosure fixing unit are inserted, around the insertion hole. 10. The method according to any one of claims 1 to 9,
≪ / RTI > further comprising a sleeve in the form of a hollow pipe coupled to the underside of the head housing. 10. The method according to any one of claims 1 to 9,
Further comprising a lip valve retaining ring formed along an edge of the lip valve above the lip valve and coupled to the inside of the head housing to secure the lip valve to the head housing.

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