WO2010104259A1

WO2010104259A1 - Multichannel trocar

Info

Publication number: WO2010104259A1
Application number: PCT/KR2009/006112
Authority: WO
Inventors: 홍두표
Original assignee: (주)다림써지넷
Priority date: 2009-03-13
Filing date: 2009-10-22
Publication date: 2010-09-16
Also published as: KR100913743B1

Abstract

The present invention relates to a trocar which helps the laparoscopic surgery in the abdomen to be performed through small incisions without opening the abdomen. More specifically, the present invention relates to a trocar provided with a multichannel, particularly attachable/detachable sealing member characterized in that the incisions of the abdomen of a patient are minimized by mounting various kinds of surgical instruments on one trocar for the laparoscopic surgery, the burden of costs of a patient is relieved by using a small number of trocars, a sealing member for preventing the inflow or outflow of gas can be attached to or detached from a trocar, and the sealing member can be separated from the trocar of the present invention so as to be used by being mounted on the existing trocar in case that multiple parts of the abdomen should be cut and a plurality of existing trocars (that is, trocars where only one surgical instrument is penetrated and inserted) should be used because of the deterioration in a patient's condition. The mulitichannel trocar of the present invention comprises a main body which comprises a body that has space between the upper and lower parts of the main body, a valve member which is coupled to the outer circumference of the body that injects gas into the body and discharges the gas from the inside of the body, and a mounting member which covers the upper aperture part of the body and is provided with a mount part; a trocar sleeve which covers the lower aperture part of the body and is inserted into the abdomen of a patient, and a sealing member which is mounted on the mount part of the mounting member and seals the outer circumference of penetrated and inserted laparoscopic instruments to block the outflow of air, wherein because the mounting member of the present invention is made of a soft material, it is swollen convexly by the gas pressure inside the body and the sealing member mounted on the mount part is inclined toward the center of the trocar sleeve by the swelling.

Description

Multichannel Trocar

The present invention relates to a trocar that supports laparoscopic surgery by opening a small hole without opening the stomach of the patient,

More specifically, it is possible to minimize the incision site of the patient's abdomen by using various types of surgical instruments in one trocar and to reduce the patient's cost by using a small number of trocars.

The sealing member, which seals the outer periphery of the surgical instrument inserted through the trocar and prevents the internal air from leaking out, can be detached and detached from the trocar. In a situation where a car (that is, a trocar in which only one surgical instrument is inserted through) is used, a sealing member is detached from the trocar of the present invention and a multi-channel trocar can be mounted and used in an existing trocar. Will,

In particular, when the gas is filled in the body, the surgical member is inserted into the sealing member is naturally inclined toward the center of the bushing, surgical instruments are inserted into the abdomen without traveling to each other,

The sealing member tightly seals the outer circumference of the surgical instrument so that the internal air does not leak out through the sealing member, and when the surgical instrument is detached from the sealing member, the opening and closing member immediately closes the instrument hole of the sealing member and leaks air. The present invention relates to a multi-channel trocar which prevents the damage.

Laparoscopic surgery is a method of drilling a small hole in the abdomen of the patient and observing the inside of the abdominal cavity through the hole, and is widely used for gallbladder resection, appendectomy, stone removal, and general surgery.

In conventional laparoscopic surgery, several holes are drilled in the abdomen, a trocar is inserted into each hole, and a surgical instrument such as an endoscope, a gas injector, a laser generator, a cutter, etc. is inserted into each trocar and the inside is observed. The operation was performed.

That is, the conventional trocar has a single channel structure in which only one surgical instrument is inserted through one trocar.

Laparoscopic surgery requires at least three surgical instruments. The first is a laparoscopic forcep to hold tissue during surgery, the second is an endoscope for the doctor to observe the inside of the abdominal cavity, and the third is a therapeutic device (eg, a laser generator, an ultrasound generator) to directly treat the affected part of the patient. , Cutters, etc.).

Therefore, in order to perform laparoscopic surgery using a conventional trocar, in which a trocar and a surgical instrument are combined one-to-one, multiple holes must be drilled in the abdomen of a patient. This damages the patient's skin as much, and the use of multiple trocars is a burden on the patient.

And laparoscopic surgery injects gas into the abdomen through the trocar to secure a surgical space, which should minimize the outflow of this gas (injected gas and gas discharged from the abdomen) to reduce the operation time or operation cost. To this end, it is necessary to prevent the outflow of gas other than the gas normally discharged through the valve member. That is, the gas should be prevented from flowing out through the gap of the body or the gap of the sealing member.

The present invention has been made to solve the above problems, to minimize the damage to the patient's skin by reducing the number of patient's skin damage by reducing the cost of the patient and the material cost of the hospital by allowing a plurality of surgical instruments can be inserted through a single trocar To do it,

In addition, the sealing member, which constitutes the core of the trocar, is made detachable, so that the patient's condition is deteriorated, and inevitably, a plurality of existing single channel trocars in which the trocar and surgical instruments are combined in one-to-one laparoscope are used. When surgery is required to reduce the patient's cost burden by separating the sealing member mounted on the multi-channel trocar of the present invention to be mounted on the existing single-channel trocar can be used,

It is an object of the present invention to provide a multi-channel trocar with an improved structure of the sealing member to prevent the gas from being discharged in addition to the discharge of the gas through the valve member.

The multi-channel trocar of the present invention for achieving the above object is

A body having a space portion penetrating up and down,

A valve member coupled to the outer circumference of the body and injecting gas into the body and discharging gas in the body;

A main body covering the upper opening of the body and including a mounting member having a mounting portion;

A bushing covering the lower body opening of the main body and inserted into the abdomen of the patient;

Is mounted to the mounting member mounting portion of the main body, sealing member for sealing the outer periphery of the laparoscopic surgical instruments inserted through to block the outflow of air;

The mounting member of the main body is made of a soft material, convexly inflated by the gas pressure inside the body, and as inflated, the sealing member mounted on the mounting portion is inclined toward the center of the bushing, and the surgery is coupled to the sealing member. It is characterized in that the direction of the mechanism is free to change.

And the body is

A support cover which is mounted on and supported by an edge of the mounting member and surrounds an upper outer circumference of the body;

It is coupled to the upper support cover to press the edge of the mounting member in close contact, further comprising a close cover rotatably coupled to the outer periphery of the body,

The mounting member is made of a transparent material, characterized in that the lower portion is bent to the outside by the gas pressure inside the body is in close contact with the inner surface of the support cover is formed,

The sealing member

A body having a through hole penetrating up and down, and having an insertion groove formed at a lower outer circumferential edge thereof to which an end portion of the mounting member forming the mounting portion is inserted and coupled;

And a sealing member embedded in the body and sealing the outer periphery of the surgical instrument inserted into the instrument hole.

The sealing member

An opening / closing member embedded in the body to be disposed below the sealing member to be pushed downward to the surgical instrument to be inserted to open the instrument hole, and to be pushed upward to the gas pressure inside the body to close the instrument hole when the surgical instrument is removed. Characterized in that it further comprises,

The sealing member further includes a support member that is inserted into the end of the opening and closing member to support the opening and closing member,

The contact surface of the support member and the sealing member is inclined, and their contact surface edges are formed with alignment grooves and alignment protrusions for holding and fixing the contact position,

The combination of the close cover, the mounting member and the support cover is rotatably coupled to the outer periphery of the body while being detachable,

The combination is characterized in that a plurality of a variety of dimensions and number of the mounting portion provided in the mounting member is provided.

The present invention having the configuration as described above can use a variety of surgical instruments with only one multi-channel trocar can minimize the number of abdominal incision site of the patient, also reduce the medical cost burden of the patient, the hospital side Again, fewer trocars can be used to reduce material costs.

And due to the sealing member of the detachable structure as in the present invention, if an unexpected situation occurs during the procedure by separating only the sealing member to be used in the existing single-channel trocar, further increase the effect of cost reduction and material cost reduction Can be.

In addition, the multi-channel trocar of the present invention has a trocar structure of the trocar using the characteristics of the navel tissue in the treatment site of the patient, thereby obtaining a trocar having a simple structure, thereby reducing the manufacturing cost. .

In addition, in addition to the normal discharge of the gas through the valve member to prevent the gas is abnormally discharged to prevent the sealing member from increasing the operation time, operation cost, and improve the efficiency of laparoscopic surgery.

1 is a perspective view of a combined multi-channel trocar according to the present invention.

2 is an exploded perspective view of FIG.

3 is a partial cutaway perspective view of the bushing;

4 is an exploded perspective view of the main body;

5 and 6 are a partially cutaway perspective view and an exploded perspective view of the sealing member.

7 is an exploded perspective view of the gas amount adjusting member.

8 is an exploded perspective view of the filter member.

9 and 10 are combined perspective and exploded perspective views of the single channel trocar.

100: body 110: body

120: mounting member 130: close cover

140: support cover 150: fixing member

160: valve member 170: gas amount adjusting member

180: filter member 200: bushing

300: sealing member 310: upper body

320: sealing member 330: opening and closing member

350: lower body 600: single channel trocar

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

Figure 1 is a combined perspective view of a multi-channel trocar according to the present invention, Figure 2 is an exploded perspective view of Figure 1, Figure 3 is a partial cutaway perspective view of the bushings, Figure 4 is an exploded perspective view of the body, Figures 5 and 6 Is a partially cutaway perspective view and an exploded perspective view of the sealing member, Figure 7 is an exploded perspective view of the gas amount control member, Figure 8 is an exploded perspective view of the filter member,

As shown in Figures 1 and 2, the trocar according to the present invention seals the periphery 200 inserted into the abdomen of the patient and the outer periphery of the surgical instrument inserted therethrough to prevent the air from flowing in and out of the abdominal cavity. A plurality of sealing members 300, the main body 100 for connecting the bushing 200 and the sealing member 30, and the valve structure for stepwise adjusting the amount of gas injected into the body and discharged from the inside of the body It is made, including.

As shown in FIG. 3, the bushing 200 has a short inner shape of the center and gradually increases in length as it goes up and down, and upper and

lower ring members

210 and 220 are respectively coupled to maintain their shape. Hook portion 230 is protrudingly formed on the inner surface of the lower portion, a plurality of grip portions (10) to easily grip the upper ring member 210 to increase the diameter of the ring member 21 to be coupled to the main body 100 ( 240 is protruded outward. Thus, the upper part is coupled with the main body 100 and the lower part is inserted into the patient's abdomen to prevent departure.

The bushing 200 is inserted into the navel of the abdomen of the patient. It is preferable that the trocar of the present invention is inserted into the navel of the patient's abdomen having softness compared to other tissues, considering that the procedure is performed by inserting a plurality of surgical instruments. This is because it has the advantage of not displaying the incision afterwards.

And the bushing 200 should be inserted into the small hole that is cut into the abdomen of the patient, so that the diameter (especially the diameter of the lower) has a soft material so as to reduce the external force, but after being inserted into the abdominal hole is easily removed In order to provide the working environment of the surgical instruments that are inserted into the abdomen inner skin to be subsequently inserted for the procedure, it has an elastic material that is restored to a circular shape in the state that no external force other than the external force of the abdomen is added. At this time, the upper and lower ring members (210, 220) to help restore the circle. Soft silicone or natural rubber may be used as a material having such characteristics.

And ring members (210, 220) are provided at the top and bottom of the bushing, respectively, the bushing is more firmly coupled to the main body 100, so as not to be easily detached from the abdomen of the patient, so as not to deform the shape of the bushing even after long-term use. .

And the hook portion 220 provided on the lower inner surface of the bushing is used to separate the bushing 200 from the abdomen of the patient after the surgery is completed.

That is, when the operation is completed, the main body 100 is separated from the bushing 200, and the finger is inserted into the bushing to grasp the hook 220 or the hook is put into the bushing by pulling on the hook 220 to pull out the bushing. Separate from the abdomen. By removing the trocar in this manner, the trocar can be easily separated while minimizing irritation to the patient's abdominal skin during the trocar removal process.

Since the hook portion 220 is provided on the inner surface of the lower portion of the bushing 200, the hook portion 220 is not in contact with the surgical instrument during the surgery and does not interfere with the surgery. It is desirable to have.

As shown in FIG. 4, the main body 100 includes a body 110, a mounting member 120, a close cover 130, a support cover 140, a fixing member 150, a valve member 160, and a gas amount adjusting member ( 170), including a filter member 180, the lower portion of the bushing 200 is coupled, the upper portion of the sealing member 300 is mounted.

The body 110 has a space 111 penetrating up and down,

In the lower portion of the coupling ring 117 is coupled to the upper ring member 210 of the bushing 200 is formed in an annular shape,

The valve member 160 and the fixing member 150 are supported on the coupling groove 117 is supported by the support 113 is formed, the support member 113 is fixed member 150 coupled to the outer periphery of the body The fixing step 119 is fixed to prevent the rotation.

The inlet 161 and the outlet 162 of the valve member 160 are connected to the support part 113, and a plurality of distribution holes 112 are connected to the space 111 to distribute gas.

And the outer periphery of the body is formed with the distribution holes 112, the receiving portion 116 is formed to accommodate the gas amount adjusting member 170 is formed, the valve on the outer peripheral body of the opposite side of the receiving portion 116 A step groove 114 having a 'b' shape is formed to which the first step protrusion 164 of the member 160 is inserted and coupled. In addition, as the valve member 160 rotates in the vertical direction of the step groove 114, the second and third step protrusions 164a and b are engaged to assist the valve member to rotate step by step at the outer periphery of the body.

In addition, the upper outer circumference of the body 110 has a coupling pin groove 115 to which the stepped portion of the coupling pin 135 protruding from the bottom of the close cover 130 is formed in an annular shape. A packing groove 118 is formed in close contact with the inner surface of the cover 140 to insert a packing to prevent the outflow of gas.

The mounting member 120 includes a plurality of mounting portions 121 on which a plurality of sealing members 300 are mounted, and an insertion groove 342 formed at an inner surface end of each mounting portion 121 at a lower portion of the sealing member 300. The engaging step portion 122 that is inserted into the hook is formed, and the lower edge is formed to extend outwardly by the gas pressure inside the body to be in close contact with the inner surface of the support cover 140 to close the gap 124. have.

In addition, the mounting member 120 may be made of a soft material such as silicon, and the mounting portion may be inverted to protrude upward. After the sealing member 300 is coupled in an inverted state, the mounting part is pushed downward to return to the original state. In addition, it expands to protrude concave upward by the internal air pressure. As the mounting member is concavely expanded by the internal air pressure, the mounting portion on which the sealing member is mounted is naturally inclined toward the center of the bushing. Thus, when the surgical instrument is inserted into the sealing member and pushed into the abdomen, the surgical instrument reduces the collision between the surgical instruments without puncturing the trocar.

In addition, the mounting portion 121 may have various diameters, such as diameters of 3 mm, 5 mm, 12 mm, and 30 mm, to match the sealing member 300 to be mounted. The diameter of 30 mm is the dimension that can accommodate the circular auto suture which has the big dimension among surgical instruments.

The close cover 130 is in close contact with the support cover 140 by pressing the upper edge of the mounting member 120.

The close cover 130 has an opening 131 in the center to expose the mounting portion 121 while pressing the edge of the mounting member 120, the coupling pin hole formed in the support cover 140 on the lower surface of the edge 145 and the auxiliary coupling pin hole 146, respectively, the insertion coupling coupling pin 135 and the auxiliary coupling pin is formed to protrude.

The support cover 140 is assembled and coupled to the close cover 130 to press the edge of the mounting member 120 provided therebetween to eliminate the gap that the gas can flow out, the outer periphery of the body 110 Rotatably coupled thereto.

Since the support cover 140 is rotatably coupled to the outer circumference of the body, the doctor can arbitrarily adjust the position of the sealing member so that the surgical instruments are positioned at a position convenient for surgery.

The fixing member 150 is coupled to the outer periphery of the body 110 while covering the valve member 160, and is fastened to the fixing step 119 so as not to rotate on the outer periphery of the body. Placing the fixing member 150 is the support cover 140 is rotatably coupled to the body, so if you want to rotate the valve member 160 to hold the support that can counter the force of the valve member to rotate Because you need a point. The body 110 is difficult to grip because the exposed portion is less, the support cover is rotatable because it is difficult to counter the rotating force of the valve member is to place the fixing member.

The fixing member 150 covers the valve member 160, and has an opening 151 so that the inlet 161 and the outlet 162 are exposed to the outside and the valve member is rotatable in a certain range.

The valve member 160 has an inlet 161 through which gas is injected from the outside, and an outlet 162 through which gas is discharged from the outside, and the filter member 180 is accommodated on an inner surface side of the outlet 162. The filter accommodating part 163 is formed.

And the inner surface is caught in the step groove 114 of the body by adjusting the rotation angle at the outer periphery of the body of the valve member 160 step 1, 2, 3 step projection to adjust the gas injection amount and discharge step by step (164, 164a, 164b) are formed.

As the valve member 160 is rotated in stages, the inlet 161 and the outlet 162 are blocked (connected) or not connected to the distribution hole 112, respectively, thereby controlling the amount of gas injected or discharged step by step. .

That is, only gas can be injected, only gas can be discharged, or gas can be injected and discharged at the same time, and the amount of gas can be controlled at the time of gas injection and discharge.

The gas amount adjusting member 170 is seated on the outer circumferential receiving portion of the body and is disposed on the plurality of distribution holes 112. And a plurality of

distribution holes

172 and 174 facing one-to-one with each distribution hole. Three distribution holes are shown in the figure.

Some of the plurality of

distribution holes

172 and 174 can distribute gas in both directions and some can distribute only in one direction, ie inside the body.

Referring to this in more detail with reference to the drawings, the gas amount adjusting member 170 is provided with an outer plate 171 having a plurality of distribution holes 172, and a plurality of further distribution holes 174 provided inside the outer plate. Including the inner plate 173 having a, the distribution hole 174 of the inner plate 173 is provided with a rubber plate 175 for opening and closing the distribution hole 172 of the outer plate 171. Thus, one flow hole is capable of outflow and inflow of gas into and out of the body based on the drawing, and the two flow holes are capable of introducing gas into the body due to the rubber plate, but the gas is not discharged out of the body.

In addition, as the valve member 160 rotates, the inlet 161 is sequentially disposed at the outer periphery of the body having no flow hole and two flow holes that allow gas to flow in only one direction, and the outlet hole 162 is rotated when the valve member 160 rotates in the same direction. The outer periphery of the body and the gas are arranged in a sequential distribution hole that allows the flow of gas in both directions. Thus, as the valve member rotates, the gas is in a state where only injection is possible, while the injection and discharge are simultaneously performed, and only the discharge is possible again. This is a reference with reference to the drawings, and by increasing the number of outlets and holes, the number of outlets, and the number of inlets, it is possible to control the amount of injection and discharge in the state that both injection and discharge are possible.

The filter member 180 is inserted and seated in the filter accommodating portion 163 of the valve member 160 and disposed on the communication holes 112 connected to the outlet 162 among the communication holes 112. Thus, noxious components are removed from the emitted gases.

The filter member 180 has a plurality of holes and is disposed between the outer filter case 181 and the inner filter case 182 that are engaged with each other and are disposed between the outer filter case 181 and the inner filter case 182 and discharged. It comprises a filter sheet 183 for directly blocking harmful components of the gas.

The filter member 180 is supported by the lower cover 186 coupled to the lower portion of the valve member 160 so as not to be separated from the filter accommodating portion 163.

As shown in FIGS. 5 and 6, the sealing member 300 includes an upper body 310 and a lower body 350, a sealing member 320, an opening and closing member 330, and a supporting member 340. , A plurality of having various sizes (diameter) to fit the diameter of the surgical unit to be coupled is detachably mounted to the mounting member 120 of the main body 100.

The upper body 310 and the lower body 340 is coupled to form an accommodation space in which the opening and closing member 330, the support member 340 is accommodated, including the sealing member 320, the sealing member 320 Is wrapped around the outer periphery of the inserted surgical instrument to prevent gas from flowing out through the sealing member 300, and the opening and closing member 330 opens the instrument hole 321 of the sealing member, and the support member 340. ) Supports the opening and closing member.

A plurality of fixing pins 311 are formed on the lower surface of the upper body for coupling the upper body 310 and the lower body 350, and the fixing pins 311 are formed on the upper surface of the lower body 350. A plurality of fixing pin holes 351 are inserted and formed.

And the lower outer periphery of the lower body 350 is inserted into the mounting portion 121 of the mounting member 120 is formed with an insertion groove 352 to be caught on the engaging step portion 122, the upper surface of the lower body 350 In the support member 340 is formed a seating portion 353 is seated.

The upper body and the lower body penetrate the upper and lower through-holes (315,355) are formed to accommodate the sealing member, opening and closing member, the support member, the surgical instrument is inserted.

The lower body 350 is tightly coupled to the mounting portion 121 to prevent the outflow of gas through the gap, it is preferably made of a soft material so as to be separated from the mounting portion 121 by an external force.

The sealing member 320 is made of a material having excellent elasticity if it is soft, such as silicone or natural rubber, so as to closely wrap the outer periphery of the surgical instrument to be inserted therethrough, and an instrument hole 321 is formed in the center through the upper and lower sides. .

And the lower surface is inclined at an angle to contact the upper surface of the support member 340, the lower end of the alignment protrusion 323 which is seated in the alignment groove 343 of the support member protrudes.

The opening and closing member 330 is lowered to one end by the surgical instrument is inserted and inserted below the sealing member 320 and the one end to the axis by the gas pressure inside the body to open and close the instrument hole 321 of the sealing member do.

The support member 340 fixes and supports one end of the opening and closing member 330. And the upper surface is inclined at an angle so as to contact the lower surface of the sealing member, the upper outer periphery is formed with an alignment groove (343) is inserted into the alignment projection is seated.

When a patient is inserted into a multi-channel trocar according to the present invention and a patient is operated, an unexpected situation occurs and the patient's abdomen must be incised and a plurality of single-channel trocars are required. Only the sealing member in the invention is removed and mounted on a single channel trocar to perform the procedure.

9 and 10 illustrate a perspective view and an exploded perspective view according to an example of a single channel trocar in which the sealing member separated in the multi-channel trocar of the present invention is coupled one-to-one.

The single channel trocar 600 shown in FIGS. 9 and 10 is a bigo that reveals that it is another invention by the applicant, not a known trocar, and the names of each component are the names used in the multi channel trocar according to their function. The components described in the multi-channel trocar and the components performing finite functions are briefly described.

The single channel trocar 600 is an injection tube 610, a body 620, a valve member 630, a filter member 670, a cap 640, an upper fixing member 650, as shown in FIG. The lower fixing member 660 is formed, and the sealing member 300 separated from the multi-channel trocar is coupled to the upper fixing member 650 and the lower fixing member 660 and disposed inside the body 620. do.

The inlet tube 610 is inserted into the abdomen of the patient to guide the surgical instrument to be inserted into the patient abdomen, and the sucker shape projection 611 to increase the adhesion so that it is not easily separated from the inserted patient abdomen in the outer peripheral section Many are formed.

The body 620 is the inlet pipe 610 is connected to the bottom, the cap 640 is coupled to the top. A valve member 630 is inserted into and coupled to the upper outer circumference stepwise to adjust the injection amount and the discharge amount of the gas, and a lower fixing member 660 is provided at the inner lower portion thereof to fix and seal the sealing member 300.

And at the outer periphery of the central portion of the body 620 into which the valve member 630 is inserted is formed a support 621 on which the lower surface of the valve member 630 is mounted and supported.

A plurality of communication holes 625 are formed in the upper portion and communicate with the inside of the body, and the communication holes 625 vary in diameter and are connected to the inlet 631 and the outlet 633 of the valve member.

In addition, a plurality of step grooves 627 are formed in the support part 621 to adjust the rotational angle of the valve member 630 step by step to adjust the injection amount and discharge amount of the gas. The step groove 627 is coupled to the step protrusion 637 protruding from the lower surface of the valve member 630.

In addition, a filter member 670 is disposed in the communication hole 625 communicating with the discharge port 633 to remove harmful components of the discharged gas, and a filter seat 629 in which the filter member 670 is seated is disposed inside the body. Formed.

And the upper portion of the body 'b' shaped detachable groove 623 is formed so that the detachable protrusion 645 protruding on the inner surface of the cap 640 is horizontally moved after the vertical movement is detachably coupled.

The valve member 630 has an injection port 631 through which gas is injected and a discharge port 633 through which gas is discharged, and a step protrusion 637 coupled to the step groove 627 of the body 620 is provided at a lower surface of the valve member 630. Is formed, is inserted into the upper outer periphery of the body 620 and coupled, the cap 640 is coupled to cover the opening of the upper.

The lower fixing member 660 is fixed to the inside of the body 620 and in communication with the inlet pipe 610. In the center, a through hole 661 is formed to be connected to the sealing member and the surgical instrument is inserted therethrough, and the inner wall forming the through hole is inclined to be in close contact with the lower outer surface of the sealing member.

Next, the through hole 661 is formed with a moving hole 663 connected to the inlet tube 610 to allow gas to move between the abdomen and the inner space of the body. A fixing hole 665 for fixing is formed.

The upper fixing member 650 includes an insertion part 651 into which the protrusion 643 protruding from the cap 640 is inserted and fixed, and a cover part 653 covering the upper outer circumference of the sealing member 300. )

The cap 640 has an insertion hole 641 through which the surgical instrument is inserted through the top and bottom thereof, and a protrusion 643 in which the upper fixing member 650 is inserted and the insertion hole is formed in the lower inner surface thereof. ) Is formed, the lower inner wall is formed with a detachable protrusion 645 detachably coupled to the detachable groove 623 of the body 620.

In the above description of the present invention, a trocar having a specific shape and structure has been described with reference to the accompanying drawings. However, the present invention may be variously modified and changed by those skilled in the art. Such modifications and changes are the scope of protection of the present invention. Should be interpreted as belonging to.

Claims

A body having a space portion penetrating up and down,

A valve member coupled to the outer circumference of the body and configured to inject gas into the body;

A main body covering the upper opening of the body and including a mounting member having a mounting portion;

A bushing covering the lower body opening of the main body and inserted into the abdomen of the patient;

Is mounted to the mounting member mounting portion of the main body, sealing member for sealing the outer periphery of the laparoscopic surgical instruments inserted through to block the outflow of air;

The mounting member of the main body is made of a soft transparent material

It is free to change the direction of the surgical instrument inserted into the sealing member,

The inner surface of the trocar through the opening of the body through the projection, the multi-channel trocar characterized in that the laparoscopic surgical instrument guides so as not to contact the trocar during the process of insertion advance.
The method of claim 1,

The main body

A support cover which is mounted on and supported by an edge of the mounting member and surrounds an upper outer circumference of the body;

It is coupled to the upper support cover to press the edge of the mounting member in close contact, further comprising a close cover rotatably coupled to the outer periphery of the body,

The lower portion of the mounting member is a multi-channel trocar, characterized in that the contact portion is bent to the outside by the gas pressure inside the body is in close contact with the inner surface of the support cover.
The method of claim 2,

The combination of the close cover, the mounting member and the support cover is rotatably coupled to the outer periphery of the body while being detachable,

The combination is a multi-channel trocar, characterized in that a plurality of a variety of dimensions and number of the mounting portion provided in the mounting member is provided.
The method of claim 1, wherein the sealing member

A body having a through hole penetrating up and down, and having an insertion groove formed at a lower outer circumferential edge thereof to which an end portion of the mounting member forming the mounting portion is inserted and coupled;

And a sealing member embedded in the body and sealing the outer periphery of the surgical instrument inserted into the instrument hole.
The method of claim 4, wherein the sealing member

An opening / closing member embedded in the body to be disposed below the sealing member to be pushed downward to the surgical instrument to be inserted to open the instrument hole, and to be pushed upward to the gas pressure inside the body to close the instrument hole when the surgical instrument is removed. Multi-channel trocar further comprising.
The method of claim 5,

The sealing member further includes a support member that is inserted into the end of the opening and closing member to support the opening and closing member,

The contact surface of the support member and the sealing member is inclined, and the multi-channel trocar characterized in that the contact surface edges are formed with alignment grooves and alignment projections for holding and fixing the contact position.
The method of claim 1,

The bushing is made of a soft material having elasticity, and the upper and lower portions are coupled to the lower part of the body and a ring member is attached to the inner skin of the patient's abdomen, respectively.

It can be inserted into the patient's abdomen by reducing the diameter by external force, and after insertion, it is restored by the elasticity and the ring member to expand the hole (incision) of the patient's abdomen and not be separated from the patient's abdomen by accidental external force. Multi-channel trocar, characterized in that not to.
The method of claim 1,

Multi-channel trocar, characterized in that the hook portion is formed on the lower inner surface of the bushing.