KR102055767B1 - Trocar - Google Patents

Abstract

The present invention relates to a trocar, the trocar according to the present invention is inserted into the sleeve portion 100, the sleeve portion 100 is inserted through the incision of the human body, the knife portion 200 for cutting the abdominal wall, and Removably coupled to the upper side of the sleeve portion 100, and includes a valve portion 300 for supporting the knife portion 200 or surgical instruments to flow, the sleeve portion 100 has a length of the sleeve portion 100 A fluid supply unit 400 for supplying a fluid downward in a spiral having the direction A as an axis is formed.

Description

Trocar

The present invention relates to trocars.

In general, in the case of the conventional open surgery for the treatment of patients, the incision site is large, the amount of bleeding occurs during surgery. Thus, the patient's recovery is slow after surgery, leaving a large scar. Minimally Invasive Surgery (MIS) techniques have been developed to overcome these shortcomings.

Minimally invasive surgery is a technique that is performed using an elongated surgical tool designed to minimize the incision site. This minimally invasive surgery has a small incision and significantly less bleeding than open surgery. Therefore, there is an advantage that the recovery of the patient after the surgery is fast and the scars appearing on the outside are small.

Specifically, minimally invasive surgery is one of the methods of laparoscopic endoscopic surgery, using a trocar that allows the surgical tool to enter a small hole of the laparoscopic or thoracoscopic, etc. into the abdomen or chest. Here, the trocar makes one or more small holes in the abdomen or the chest of the patient, penetrates the surgical tool such as endoscope through the trocar's insertion tube, and performs the operation while observing the surgical site.

Laparoscopic endoscopic methods described above can reduce the pain of the patient by minimizing the incision of the skin, recover the patient quickly, reduce the risk of infection and scarring, and therefore, gallbladder resection, biliary stone removal, and protruding dendritic resection In addition, it is widely used in general surgery.

However, the trocar according to the prior art may leak gas inside the abdomen during the surgical procedure. In order to prevent such leakage, the trocar according to the prior art is provided with a sealing body and sealed, but there is a problem in that the sealing body alone cannot completely prevent leakage of gas inside the abdomen.

KR 10-1612718 B1

The present invention is to solve the above-mentioned problems of the prior art, and by providing a fluid supply portion for spirally supplying the fluid in the abdomen inner direction in the sleeve portion, relates to a trocar that can prevent the gas inside the abdomen to leak. .

Trocar according to an embodiment of the present invention is inserted into the sleeve portion through the incision of the human body, the knife portion which is inserted into the sleeve portion, the abdominal wall incision, and detachably coupled to the upper side of the sleeve portion, the knife portion Or a valve portion for fluidly supporting the surgical instrument, wherein the sleeve portion is provided with a fluid supply portion for supplying fluid downwardly in a helical shape along the longitudinal direction of the sleeve portion.

In the trocar according to the embodiment of the present invention, the fluid supply part is formed on one side of the sleeve part to receive the fluid from the outside, and is formed inside the outer wall of the sleeve part, the longitudinal direction of the sleeve part to the axis It extends in a spiral, one side is in communication with the supply portion, the other side includes a fluid passage communicating with the inside of the sleeve portion.

In the trocar according to an embodiment of the present invention, the fluid passage, a predetermined space provided between the outer wall of the sleeve portion and the separation wall formed inside the outer wall of the sleeve portion, and protrudes from the outer wall of the sleeve portion or the separation wall Protruded from and formed by a spirally extending protrusion.

In the trocar according to the embodiment of the present invention, the supply part is provided between a pipe part for receiving fluid from the outside, and a supply wall formed on an outer wall of the sleeve part and an outer wall of the sleeve part, and one side of the pipe part is provided. It is in communication with, the other side includes a supply passage in communication with the fluid passage through the communication hole.

In the trocar according to the embodiment of the present invention, the communication hole is formed on the upper end of the sleeve portion.

In the trocar according to the embodiment of the present invention, the sleeve portion, the expansion portion to which the valve portion is detachably coupled, the insertion portion having a smaller diameter than the expansion portion, the tubular extension to be inserted through the incision, and The expansion pipe portion and the insertion portion is connected, and includes a connecting portion that is smaller in diameter toward the insertion portion, the fluid passage extends from the upper end of the expansion pipe portion to the lower end of the connecting portion.

In the trocar according to an embodiment of the present invention, the valve unit is provided in the case having a space therein, the inside of the case, to support the knife unit or the surgical instrument to slide back and forth, left and right, A support portion for slidably supporting the knife portion or the surgical instrument so that the knife portion or the surgical instrument is inclined with respect to the longitudinal direction of the sleeve portion, and a seal provided in the support portion to be in close contact with the knife portion or the surgical instrument Contains wealth.

In the trocar according to an embodiment of the present invention, the support portion, a support member for supporting the sealing portion, a guide portion for slidably guiding the support member, and one end is coupled to the case, the other end is the support member Is coupled to, after the support member slides, and includes an elastic body for moving the support member to the initial position.

In the trocar according to the embodiment of the present invention, the guide portion is fixed to the case above the sealing portion, the first guide portion formed with a first protrusion protruding toward the center of the case, the first protrusion A second guide portion including a first contact surface sliding in front, rear, left and right in contact with the second surface, and a second contact surface formed to be inclined with respect to the longitudinal direction of the sleeve portion, and fixed to the case below the sealing portion, the center of the case being A fourth guide portion including a third guide portion protruding in a direction, a third contact surface sliding back, front, left, and right in contact with the second protrusion, and a fourth contact surface inclined with respect to the longitudinal direction of the sleeve portion; And a guide part, wherein the support member is formed to be inclined with respect to the longitudinal direction of the sleeve part to be in contact with the second contact surface. And is formed on the top of the fifth contact surface to slide, is formed to be inclined with respect to the sleeve portion longitudinal direction, the sixth contact surface that slides in contact with the fourth contact surface is formed at the bottom.

In the trocar according to the embodiment of the present invention, the sealing portion includes six sealing pieces.

In the trocar according to the embodiment of the present invention, the support member includes two or more support pieces, and each of the support pieces is coupled in a hook manner.

In the trocar according to the embodiment of the present invention, the case includes two or more case members, and each case member is coupled in a hook manner.

In the trocar according to the embodiment of the present invention, the first projection is formed on any one of the predetermined surface of the support member and the sealing portion in contact with each other, the first groove is inserted into the other one Is formed.

In the trocar according to the embodiment of the present invention, a second protrusion is formed on any one of a predetermined surface of the case and the predetermined surface of the elastic body which are in contact with each other, and a second groove into which the second protrusion is inserted is formed on the other. The third projection may be formed on one of the predetermined surface of the support member and the predetermined surface of the elastic body which are in contact with each other, and the third groove may be formed at the other one.

In the trocar according to an embodiment of the present invention, the knife portion or the surgical instrument penetrates through the sleeve portion and prevents fluid from moving in the direction of the valve portion.

In the trocar according to the embodiment of the present invention, the check valve includes six check valve pieces.

In the trocar according to the embodiment of the present invention, the knife portion is formed in a tubular shape so as to form a space therein, the upper end is opened, the protrusion formed protruding in the center direction is formed in the space formed inside the knife portion.

In the trocar according to the embodiment of the present invention, when the knife portion is inserted into the guide tube formed in the center of the valve portion, the knife portion is formed with an extension protruding in the direction of the guide tube to face the upper side of the guide tube do.

In the trocar according to the embodiment of the present invention, the sharp end of the knife portion for cutting the abdominal wall is formed with a wing portion protruding to extend in the longitudinal direction of the knife portion.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to this, the terms or words used in this specification and claims are not to be interpreted in a conventional and dictionary sense, and the inventors may appropriately define the concept of terms in order to best explain their invention in the best way possible. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention.

According to the present invention, by providing a fluid supply portion for spirally supplying a fluid in the abdomen inner direction in the sleeve portion, there is an effect that can prevent the gas inside the abdomen leak.

In addition, according to the present invention, six sealing pieces are provided, thereby minimizing frictional resistance during the flow of the knife part or the surgical instrument, thereby reducing the fatigue of the doctor and applying the doctor's technique as it is to the affected part.

Further, according to the present invention, six sealing pieces are provided, and even when using an ultrasonic device having a large frictional force due to vibration and a high frictional heat, the frictional resistance is small, so that the durability of the sealing portion can be maintained.

1 is a perspective view of a trocar according to an embodiment of the present invention;
Figure 2 is an exploded perspective view of the trocar shown in Figure 1,
3 is a partial cross-sectional view of the trocar shown in FIG. 1;
4 is a cross-sectional view of the valve unit shown in FIG. 1.

The objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and the preferred embodiments associated with the accompanying drawings. In the present specification, in adding reference numerals to the components of each drawing, it should be noted that the same components as possible, even if displayed on different drawings have the same number as possible. In addition, terms such as “first” and “second” are used to distinguish one component from another component, and the component is not limited by the terms. In the following description, detailed descriptions of related well-known techniques that may unnecessarily obscure the subject matter of the present invention will be omitted.

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

1 is a perspective view of a trocar according to an embodiment of the present invention.

Basically, when performing laparoscopic surgery to install a laparoscopic surgical traction device in the incision portion of the human body, to maintain the traction state open the incision, incision using the trocar knife 200 according to this embodiment The abdominal wall of the inner side is cut off.

After cutting the abdominal wall, the knife unit 200 may be removed from the sleeve unit 100 and the valve unit 300, and then laparoscopic surgery may be performed by inserting surgical instruments into the sleeve unit 100 and the valve unit 300. have.

Hereinafter, the trocar according to an embodiment of the present invention will be described in detail.

2 is an exploded perspective view of the trocar shown in FIG. 1, FIG. 3 is a partial cross-sectional view of the trocar shown in FIG. 1, and FIG. 4 is a cross-sectional view of the valve unit shown in FIG. 1.

As shown in Figures 2 to 4, the trocar according to the present embodiment is inserted into the sleeve portion 100, the sleeve portion 100 is inserted through the incision of the human body, the knife portion 200 for cutting the abdominal wall And a valve portion 300 detachably coupled to the upper side of the sleeve portion 100 and supporting the knife portion 200 or the surgical instrument in a flowable manner, and the sleeve portion 100 includes a sleeve portion 100. Fluid supply unit 400 for supplying the fluid to the lower side in a spiral with the longitudinal direction (A) of the axis is formed.

The sleeve 100 is inserted through the incision of the human body, and serves to guide the knife unit 200 or the surgical instrument. Here, the sleeve 100 may be formed in a tubular shape as a whole. In detail, the sleeve part 100 may include an expansion part 110, an insertion part 120, and a connection part 130. At this time, the expansion unit 110 is to be detachably coupled to the valve unit 300, it may be formed in a relatively expanded form on the upper side of the sleeve portion (100). In addition, the insertion part 120 has a diameter smaller than the expansion part 110 and extends in a tubular shape so as to be inserted through the incision part, and is relatively formed on the lower side of the sleeve part 100 so as to have a knife part 200 or a surgical instrument. Can pass. Therefore, the knife unit 200 or the surgical instrument may be inserted into the incision through the insertion unit 120. The connecting portion 130 connects the expansion pipe 110 and the insertion portion 120, and the diameter thereof decreases toward the insertion portion 120.

On the other hand, as shown in Figure 3, the sleeve 100 is formed with a fluid supply unit 400 for supplying a fluid to the lower side (inner abdominal direction). Here, the fluid supply unit 400 supplies the fluid in a helical axis with the longitudinal direction A of the sleeve unit 100 as an axis. In this case, the fluid supply unit 400 may include a supply unit 410 and a fluid passage 420. In detail, the supply part 410 is formed at one side of the sleeve part 100 to receive the fluid from the outside. In addition, the fluid passage 420 is formed inside the outer wall 423 of the sleeve portion 100, extends helically around the longitudinal direction (A) of the sleeve portion 100, one side and the supply portion 410 In communication, the other side is in communication with the inside of the sleeve portion (100). Therefore, the fluid supplied to the supply unit 410 may pass through the fluid passage 420 extending in a helical manner, and may be spirally supplied to the inside of the sleeve unit 100. More specifically, the fluid passage 420 is a predetermined space provided between the outer wall 423 of the sleeve portion 100 and the separation wall 425 formed inside the outer wall 423 of the sleeve portion 100, and the sleeve portion ( It may be formed by a protrusion 427 protruding from the outer wall 423 of the 100 or protruding from the separation wall 425 and helically extending. For example, the outer wall 423 and the separating wall 425 of the sleeve portion 100 may be formed in parallel to each other, the protrusion 427 is a sleeve (from the separating wall 425 as shown in FIG. 2). It may protrude to the outer wall 423 of the 100. The fluid passage 420 may extend helically by a predetermined space between the outer wall 423 and the separation wall 425 of the sleeve part 100 and a protrusion 427 spirally formed in the predetermined space. Meanwhile, as shown in FIG. 3, the supply unit 410 may include a pipe unit 413 and a supply passage 415. Here, the pipe portion 413 is formed to protrude outside the sleeve portion 100 is connected to a separate source, it can receive the fluid from the outside. In addition, the supply passage 415 is provided in the space between the outer wall 423 of the sleeve portion 100 and the supply wall 415a formed outside the outer wall 423 of the sleeve portion 100, one side of the pipe portion 413. ), And the other side may be in communication with the fluid passage 420 through the communication hole (416). Therefore, the fluid supplied from a separate source may be delivered to the supply passage 415 via the pipe portion 413, and again to the fluid passage 420 from the supply passage 415. In addition, the pipe part 413 is provided with an on / off valve 417 to control the opening and closing of the pipe part 413. Meanwhile, a communication hole 416 in which the supply passage 415 and the fluid passage 420 communicate with each other may be formed at an upper end of the sleeve 100. As such, since the communication hole 416 is formed at the upper end of the sleeve part 100, the fluid may move from the supply passage 415 toward the upper end of the sleeve part 100 via the pipe part 413, and then the fluid May move from the top to the bottom of the sleeve portion 100 in the fluid passage 420 through the communication hole 416. By this configuration, the fluid passage 420 can be secured to a sufficient length, so that the fluid can be guided completely spiral while passing through the fluid passage 420. Meanwhile, the fluid passage 420 may extend from the upper end of the expansion part 110 to the lower end of the connection part 130. For example, the fluid passage 420 receives the fluid through the communication hole 416 formed at the upper end of the expansion pipe 110, and discharges the fluid through the exhaust hole 419 formed at the lower end of the connection part 130. It can be. As a result, the fluid may be helically guided through the fluid passage 420, and may be helically supplied to the insertion part 120 of the sleeve part 100.

As described above, when the fluid supply unit 400 spirally supplies the fluid to the lower side (abdominal inward direction), the supplied fluid prevents the gas inside the abdomen from rising through the sleeve 100 and the gas inside the abdomen. Can be prevented from leaking to the outside. In particular, since the fluid supply unit 400 supplies the fluid in a spiral manner, it is possible to prevent the gas from leaking to the outside without applying excessive pressure to the inside of the abdomen.

In addition, the sleeve 100 may be provided with a check valve 430. Here, the check valve 430 is disposed below the valve unit 300 to prevent the fluid from moving in the direction of the valve unit 300. In detail, since the check valve 430 is disposed below the valve part 300, even when the valve part 300 is separated from the sleeve part 100, the gas inside the abdomen can be prevented from leaking, and the fluid passage Since it is disposed above the exhaust hole 419 of 420, it is possible to prevent the fluid supplied from the fluid passage 420 to leak. Meanwhile, as shown in FIG. 2, the check valve 430 may be formed of, for example, six check valve pieces 435. In this way, since the check valve 430 is formed of six check valve pieces 435, the durability of the check valve 430 can be improved, and the check valve 430 and the knife unit 200 or between the surgical instrument The friction force can be reduced, and even if the check valve 430 is reversed, the original recovery is fast.

The valve unit 300 serves to support the knife unit 200 or the surgical instrument to flow. Here, the valve 300 is detachably coupled to the upper side of the sleeve 100. In this case, as shown in FIG. 3, the valve part 300 may include a case 310, a support part 320, and a sealing part 360.

Specifically, as shown in Figure 4, the case 310 is formed to the exterior of the valve unit 300 is provided with a space therein. For example, the case 310 may be formed by combining four case members 311, 313, 315, and 317. For convenience, the four case members 311, 313, 315, and 317 are the first case member 311, the second case member 313, the third case member 315, and the fourth case member 317 in order from the upper side. To be defined). In this case, a separate sealing member 314 may be disposed between the second case member 313 and the third case member 315 to seal the case 310.

On the other hand, the support 320 is provided inside the case 310, it can support the knife unit 200 or the surgical instrument to be slidable. In detail, the support part 320 may slidably support the knife part 200 or the surgical instrument in the front, rear, left, and right directions (a plane perpendicular to the longitudinal direction A of the sleeve part 100). At the same time, the support part 320 is such that the knife part 200 or the surgical instrument is inclined with respect to the longitudinal direction A of the sleeve part 100 (at an acute angle with respect to the longitudinal direction A of the sleeve part 100). The knife unit 200 or the surgical instrument may be slidably supported. That is, the support part 320 may support the knife part 200 or the surgical instrument to swing. In addition, the support 320 may support the knife unit 200 or the surgical instrument to be rotatable about the longitudinal direction A of the sleeve unit 100.

In addition, the sealing part 360 is installed on the support part 320 and is in close contact with the outer peripheral surface of the knife part 200 or the surgical instrument. That is, the sealing part 360 serves to seal around the knife part 200 or the surgical tool when the knife part 200 or the surgical tool is inserted into the sleeve part 100.

Here, referring to the support part 320 in detail, the support part 320 may include a support member 330, a guide part 340, and an elastic body 350. In this case, the support member 330 supports the sealing part 360, and the guide part 340 guides the support member 330 to be slidable. In addition, one end of the elastic member 350 is coupled to the case 310 (between the third case member 315 and the fourth case member 317), and the other end thereof is the support member 330 (first support piece 331). And between the second support piece 333), after the support member 330 slides, moves the support member 330 to an initial position. That is, when the knife unit 200 or the surgical instrument is inserted, the support member 330 slides, and the elastic body 350 is deformed to generate an elastic force, and the knife unit 200 or the surgery is caused by the elastic force of the elastic body 350. If the mechanism is removed is to move the support member 330 to the initial position. Here, the elastic member 350 may be extended to be bent twice to provide sufficient elastic force to the support member 330. By this elastic body 350, the sealing portion 360 supported by the support member 330 can be always located in the initial position (correct position), it can induce a stable insertion of the knife unit 200 or surgical instruments have.

More specifically, the guide part 340 may include a first guide part 341, a second guide part 343, a third guide part 345, and a fourth guide part 347. Here, the first guide part 341 is fixed to the case 310 above the sealing part 360 (upper side of the third case member 315), and is formed in an annular shape as a whole, so that the center direction of the case 310 is increased. The first protrusion 342 protruded to be formed. In this case, the second guide part 343 may include a first contact surface 343a that contacts the upper surface of the first protrusion 342 and slides forward, backward, left and right. Therefore, the second guide part 343 may be slid back, front, left, and right while the first contact surface 343a is supported by the first protrusion 342. In addition, the third guide part 345 is fixed to the case 310 below the sealing part 360 (lower side of the fourth case member 317), and is formed in an annular shape as a whole, and thus the center direction of the case 310 is provided. A second protrusion 346 protruding into the shape may be formed. In this case, the fourth guide part 347 may include a third contact surface 347a that contacts the upper surface of the second protrusion 346 and slides forward, backward, left and right. Therefore, in the fourth guide part 347, the third contact surface 347a is supported by the second protrusion 346 so that the fourth guide part 347 can slide back, forth, left, and right.

The second guide part 343 may include a second contact surface 343b formed to be inclined with respect to the longitudinal direction A of the sleeve part 100. At this time, the upper end of the support member 330 (the upper end of the first support piece 331) is formed to be inclined with respect to the longitudinal direction (A) of the sleeve portion 100, the second contact surface of the second guide portion 343 A fifth contact surface 337 sliding in contact with the 343b may be formed. Accordingly, the support member 330 may support the fifth contact surface 337 on the second contact surface 343b to swing the knife portion 200 or the surgical instrument. In addition, the fourth guide part 347 may include a fourth contact surface 347b formed to be inclined with respect to the longitudinal direction A of the sleeve part 100. At this time, the lower end of the support member 330 (lower end of the third support piece 335) is formed to be inclined with respect to the longitudinal direction A of the sleeve portion 100, the fourth contact surface of the fourth guide portion 347 A sixth contact surface 339 sliding in contact with the 347b may be formed. Accordingly, the support member 330 may support the sixth contact surface 339 on the fourth contact surface 347b to swing the knife unit 200 or the surgical instrument.

As a result, the sliding between the first protrusion 342 of the first guide portion 341 and the first contact surface 343a of the second guide portion 343, and the second protrusion 346 of the third guide portion 345. By sliding between the third contact surface 347a of the fourth guide part 347, the support member 330 may support the knife part 200 or the surgical instrument to slide forward, backward, left, and right. In addition, sliding between the second contact surface 343b of the second guide portion 343 and the fifth contact surface 337 of the support member 330 and the fourth contact surface 347b of the fourth guide portion 347 are supported. By sliding between the sixth contact surfaces 339 of the member 330, the support member 330 may support the knife unit 200 or the surgical instrument to swing.

The support member 330 may include a first support piece 331, a second support piece 333, and a third support piece 335. Here, the first support piece 331 and the third support piece 335 may be coupled with the second support piece 333 therebetween. At this time, the end of the elastic member 350 is coupled between the first support piece 331 and the second support piece 333, and the sealing portion 360 between the second support piece 333 and the third support piece 335. ) May be combined. Meanwhile, the first support piece 331, the second support piece 333, and the third support piece 335 may be coupled to each other in a hook type. For example, a first fastening protrusion 336 having a hook shape is formed in the third support piece 335, and a first fastening groove in which the first fastening protrusion 336 is inserted and fixed to the second support piece 333. 334 is formed, and the third support piece 335 and the second support piece 333 may be stably coupled.

Similarly, the first case member 311, the second case member 313, the third case member 315, and the fourth case member 317 constituting the case 310 are coupled to each other by a hook method. Can be. For example, a second fastening groove 316 having a hook shape is formed in the third case member 315, and a second fastening protrusion 316 is inserted into and fixed to the fourth case member 317. 318 is formed, and the third case member 315 and the fourth case member 317 may be stably coupled.

As described above, since two or more support pieces and two or more case members are coupled in a hook manner, a spring back phenomenon does not occur regardless of oil penetration or environmental factors, so that the sealing can be stably maintained. .

Meanwhile, as shown in FIG. 2, the sealing part 360 may include six sealing covers 363 disposed to overlap each other and six sealing pieces 365 disposed under the sealing cover 363. have. As such, since six sealing pieces 365 are provided, the sealing part 360 may minimize frictional resistance during the flow of the knife part 200 or the surgical instrument. Therefore, the fatigue of the doctor can be reduced and the doctor's technique can be applied to the affected part as it is. In addition, even when an ultrasonic device having a large frictional force due to vibration and a high frictional heat is used, the frictional resistance is small, so that the durability of the sealing unit 360 can be maintained.

In addition, as shown in FIG. 4, a first protrusion 335a is formed on one of a predetermined surface of the support member 330 and the sealing surface 360 which are in contact with each other, and a first protrusion 335a on the other. ) May be formed a first groove 365a. For example, a first protrusion 335a is formed on a predetermined surface of the third support piece 335 of the support member 330, and a first protrusion 335a is provided on a predetermined surface of the sealing piece 365 of the sealing portion 360. First grooves 365a into which the holes are inserted may be formed.

As described above, since the support member 330 and the sealing portion 360 having elasticity are coupled by the combination of the first protrusion 335a and the first groove 365a, the gas due to the thickness unevenness of the sealing portion 360. Leakage may be prevented and the sealing part 360 may be prevented from being separated from the support member 330.

In addition, a second protrusion 315a is formed on any one of a predetermined surface of the case 310 and a predetermined surface of the elastic body 350, and the second groove 350a into which the second protrusion 315a is inserted. This can be formed. For example, a second protrusion 315a is formed on a predetermined surface of the third case member 315 and the fourth case member 317 of the case 310, and a second protrusion 315a is formed on a predetermined surface of the elastic body 350. A second groove 350a into which the is inserted may be formed.

Similarly, the third groove 331b is formed on one of the predetermined surface of the support member 330 and the predetermined surface of the elastic member 350 which are in contact with each other, and the third groove into which the third protrusion 331b is inserted into the other. 350b may be formed. For example, a third groove 331b is formed on a predetermined surface of the first support piece 331 of the support member 330, and a third groove (3b) into which the third protrusion 331b is inserted into the predetermined surface of the elastic member 350 ( 350b) may be formed.

As described above, the case 310 and the elastic body 350 having elasticity are combined in a combination of the second protrusion 315a and the second groove 350a, and the support member 330 and the elastic body 350 having elasticity. Is coupled to the combination of the third protrusion (331b) and the third groove (350b), it is possible to prevent the gas leakage due to the thickness irregularity of the elastic body 350, the elastic body 350 is the case 310 or the support member ( Deviation from 330 may be prevented.

The knife part 200 (refer to FIG. 1) serves to cut the abdominal wall. Here, the knife part 200 is formed in a tubular shape as a whole, and can be inserted into or detached from the sleeve part 100, and when inserted into the sleeve part 100, the lower end may protrude from the sleeve part 100.

On the other hand, the knife portion 200 is formed in a tubular shape so that a space is formed therein, the top may be open. Therefore, an endoscope or the like may be inserted through the upper end of the opened knife part 200. In this case, two protrusion pieces 210 protruding in the center direction may be formed in a space formed inside the knife part 200 (see FIG. 2). The protrusion piece 210 has an elastic force and contacts the outer circumferential surface of the endoscope, thereby stably fixing the endoscope. Specifically, an elastic ring 220 surrounding the outer circumferential surface of the knife part 200 may be provided. The through-hole 230 in which the protruding piece 210 protruding from the elastic ring 220 is formed in the knife part 200 is provided. Through) may protrude into a space formed inside the knife unit 200. In this case, the elastic ring 220 and the protruding piece 210 may be formed integrally with silicon, for example.

In addition, as shown in FIG. 3, the knife part 200 may be inserted and fixed through the guide tube 305 formed at the center of the valve part 300. As such, when the knife unit 200 is inserted into the guide tube 305 of the valve unit 300, the knife unit 200 protrudes in the direction of the guide tube 305 to face the upper side of the guide tube 305. An extension 240 (increased in diameter) may be formed. By the extension part 240, the knife part 200 can be securely fixed to the guide tube 305 of the valve part 300. Therefore, by preventing the unintentional movement of the knife unit 200, the force of the surgeon can be accurately transmitted to the knife unit 200.

In addition, as shown in Figure 2, the sharp end of the knife portion 200 that actually cuts the abdominal wall may be formed wing portion 250 protruding to extend in the longitudinal direction of the knife portion 200. In this case, four wings 250 may be provided, for example. By the wing portion 250, the knife portion 200 can hold the abdominal wall strongly and be perforated, so that the peritoneum can be easily permeated.

In addition, the knife unit 200 may be integrally formed with a basic configuration. For example, the knife part 200 may be formed by one injection, thereby reducing the number of parts and ensuring uniformity of quality.

Although the present invention has been described in detail through specific examples, it is intended to describe the present invention in detail, and the present invention is not limited thereto, and should be understood by those skilled in the art within the technical spirit of the present invention. It is obvious that modifications and improvements are possible.

All simple modifications and variations of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be apparent from the appended claims.

100: sleeve 110: expansion pipe
120: insertion portion 130: connection portion
200: knife portion 210: protrusion
220: elastic ring 230: through hole
240: extension portion 250: wing portion
300: valve portion 305: guide tube
310: case 311: first case member
313: second case member 314: sealing member
315: third case member 315a: second projection
316: second fastening protrusion 317: fourth case member
318: second fastening groove 320: support portion
330: support member 331: first support piece
331b: 3rd protrusion 333: 2nd support piece
334: first fastening groove 335: third support piece
335a: first protrusion 336: first fastening protrusion
337: fifth contact surface 339: sixth contact surface
340: guide portion 341: first guide portion
342: first protrusion 343: second guide portion
343a: first contact surface 343b: second contact surface
345: third guide portion 346: second protrusion
347: fourth guide portion 347a: third contact surface
347b: fourth contact surface 350: elastic body
350a: second groove 350b: third groove
360: sealing unit 363: sealing cover
365: sealing service 365a: first groove
400: fluid supply part 410: supply part
413: pipe portion 415: supply passage
415a: supply wall 416: communication hole
417: on-off valve 419: exhaust hole
420: fluid passage 423: outer wall
425 separation wall 427 projection
430: check valve 435: check valve piece
A: longitudinal direction of the sleeve portion

Claims (19)

Sleeve portion inserted through the incision of the human body;
A knife portion that is insertable into the sleeve portion and cuts the abdominal wall; And
A valve portion detachably coupled to an upper side of the sleeve portion and movably supporting the knife portion or a surgical instrument;
Including,
The sleeve portion is provided with a fluid supply portion for supplying the fluid in a spiral in the axial direction of the sleeve portion,
The fluid supply unit,
A supply part formed at one side of the sleeve part to receive a fluid from the outside; And
A fluid passage formed inside the outer wall of the sleeve part, extending in a helical shape having an axis in the longitudinal direction of the sleeve part, one side communicating with the supply part, and the other side communicating with the inside of the sleeve part;
Including,
The fluid is helically guided through the fluid passage, spirally supplied downward, to prevent gas inside the abdomen from rising through the sleeve,
The fluid passage,
A trocar formed by a predetermined space provided between the outer wall of the sleeve portion and the separation wall formed inside the outer wall of the sleeve portion, and a protrusion protruding from the outer wall of the sleeve portion or protruding from the separation wall and extending spirally.
delete delete The method according to claim 1,
The supply unit,
Pipe part for receiving the fluid from the outside; And
A supply passage provided between an outer wall of the sleeve portion and a supply wall formed outside the outer wall of the sleeve portion, one side of which is in communication with the pipe portion, and the other side of which is in communication with the fluid passage through a communication hole;
Trocar comprising.
The method according to claim 4,
The communication hole is formed on the upper end of the sleeve trocar.
The method according to claim 1,
The sleeve portion,
An expansion pipe part to which the valve part is detachably coupled;
An insertion portion having a diameter smaller than the expansion portion and extending in a tubular shape so as to be inserted through the incision portion; And
A connecting part connecting the expansion pipe part to the insertion part and having a diameter smaller toward the insertion part;
Including,
And the fluid passage extends from an upper end of the expansion part to a lower end of the connection part.
The method according to claim 1,
The valve unit,
A case having a space therein;
The knife unit or the surgical instrument is provided inside the case so as to slidably support the knife unit or the surgical instrument in front, rear, left and right, and the knife unit or the surgical instrument is inclined with respect to the longitudinal direction of the sleeve unit. Support for supporting the slide; And
A sealing part installed on the support part and in close contact with the knife part or the surgical instrument;
Trocar comprising.
The method according to claim 7,
The support portion,
A support member for supporting the sealing portion;
A guide part slidably guiding the support member; And
An elastic body having one end coupled to the case and the other end coupled to the support member to move the support member to an initial position after the support member slides;
Trocar comprising.
The method according to claim 8,
The guide unit,
A first guide part fixed to the case above the sealing part and having a first protrusion protruding toward the center of the case;
A second guide part including a first contact surface sliding in front, left, and right sides in contact with the first protrusion, and a second contact surface formed to be inclined with respect to the longitudinal direction of the sleeve part;
A third guide part fixed to the case below the sealing part and having a second protrusion protruding toward the center of the case; And
A fourth guide part including a third contact surface sliding in front, rear, left and right sides in contact with the second protrusion, and a fourth contact surface inclined with respect to the longitudinal direction of the sleeve part;
Including,
The support member,
A fifth contact surface is formed to be inclined with respect to the longitudinal direction of the sleeve portion, the fifth contact surface sliding in contact with the second contact surface is formed at the upper end, is formed to be inclined with respect to the longitudinal direction of the sleeve portion, sliding in contact with the fourth contact surface A trocar having a sixth contact surface formed at the bottom thereof.
The method according to claim 7,
The sealing unit,
Trocar containing six sealing pieces.
The method according to claim 8,
The support member,
A trocar comprising at least two support pieces, each said support piece being hooked together.
The method according to claim 7,
The case,
A trocar comprising two or more case members, each case member coupled in a hooked manner.
The method according to claim 8,
A trocar having a first protrusion formed on one of a predetermined surface of the support member and a predetermined surface of the sealing portion which are in contact with each other, and a first groove into which the first protrusion is inserted.
The method according to claim 8,
One of the predetermined surface of the case and the predetermined surface of the elastic body in contact with each other is formed with a second projection, the other is formed with a second groove into which the second projection is inserted,
One of the predetermined surface of the support member and the predetermined surface of the elastic body in contact with each other, the third projection is formed, the other is a trocar formed with a third groove into which the third projection is inserted.
The method according to claim 1,
The trolka is provided with a check valve through which the knife unit or the surgical instrument penetrates, and prevents fluid from moving in the direction of the valve unit.
The method according to claim 15,
The check valve,
Trocar with six check valve pieces.
The method according to claim 1,
The knife portion is formed in a tubular shape so as to form a space therein, the top is open,
The trocar is formed in the space formed inside the knife portion protruding in the center direction.
The method according to claim 1,
When the knife portion is inserted into the guide tube formed in the center of the valve portion,
The trocar is provided with an extension protruding in the direction of the guide tube to face the upper side of the guide tube.
The method according to claim 1,
The sharp end of the knife portion for cutting the abdominal wall is formed trocar wings protruding to extend in the longitudinal direction of the knife portion.

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