KR101243381B1 - Trocar assembly - Google Patents

Abstract

PURPOSE: A trochar assembly is provided to be easily removed from a sleeve when the insertion of the sleeve is completed. CONSTITUTION: A trochar assembly comprises: a hollow cylindrical sleeve(110) which is inserted into and fixed in a human body, and is made of an elastic material; a main body(120) which is combined with the top end portion of a sleeve exposed to the outside; and a needle(140) which can be inserted into a human body through umbilicus or cut skin, and is separated from the sleeve.

Description

Trocar assembly

The present invention relates to a trocar assembly, and more particularly, to a trocar assembly, which allows for ease of use while allowing a laparoscopic surgical instrument to be inserted in an accurate position.

In general, unlike conventional open surgery, the laparotomy is being performed to minimize the incision of the skin and to restore the patient's speed.

Laparoscopic surgery is a surgical method performed by observing the surgical site of the abdominal cavity by making a tube to the abdomen of a patient using a surgical instrument called trocar and entering an surgical site such as an endoscope into the surgical site. It is widely used for biliary stone removal, spinal excision, and general surgery.

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, the sleeve is provided with a soft material such as silicone to minimize the influence of the sleeve when inserted into the patient's body. Due to the nature of the sleeve, it is difficult to insert the sleeve into the body of the patient .

In order to solve this problem, a body and a sleeve have been conventionally formed integrally, and a puncture has been removed by inserting a puncture through the main body and the sleeve, a laparoscopic operation is performed, or a blade is provided inside the sleeve, A trocar for laparoscopic surgery has been developed.

However, such a conventional trocar is not only complicated in configuration but also very large in volume as the body and the sleeve are integrally implemented or have separate blades inside the sleeve, which makes it difficult to make fine adjustments. exist.

In addition, even in the case of the trocar configured by separating the main body and the sleeve, there is a problem that requires a lot of effort and attention in the insertion process of the sleeve since there is no method for maintaining a constant shape of the sleeve inserted into the body. do.

Therefore, it is necessary to easily adjust the position of the sleeve so that the laparoscopic surgical instrument can be inserted in the correct position, but the research and development of the trocar structure that can be used for convenience is required.

Korea Patent Registration No. 10-0975030

It is an object of the present invention to provide a trocar assembly which allows for ease of use while allowing the laparoscopic surgical instrument to be inserted in the correct position.

According to the present invention, a hollow cylindrical sleeve is inserted into the body through the navel or skin incision of the patient and provided with an elastic material; A body coupled to an upper end portion of the sleeve exposed to the outside so that the laparoscopic surgical instrument may be inserted and disposed through the sleeve; And maintaining the shape of the sleeve by pressing the inner circumferential surface of the sleeve when the sleeve is inserted, so that the sleeve can be smoothly inserted into the body through the navel or the skin incision, and the body when the sleeve is completely inserted. Is achieved by a trocar assembly comprising a piercing that is smoothly separated from the sleeve by releasing the pressurized state against the sleeve so that it can be coupled to the sleeve.

The piercing, piercing housing; An insertion part protruding from the lower end of the penetration housing and inserted into the sleeve; A plurality of pressure adjusting units which press or release the inner circumferential surface of the sleeve by protruding to the outside or inserted into the insert; And a locking unit provided to move along the inside of the penetration housing and the insertion part such that the pressure adjusting part protrudes to the outside of the insertion part according to a user's manipulation.

The locking unit, the lock button is provided to protrude from the upper end of the immersion housing; And a locking bar provided at a lower side of the lock button so as to taper from the upper end portion to the lower end portion thereof so that the pressure adjusting part protrudes outwardly while moving downward when the lock button is pressed.

The trocar assembly may further include an unlocking unit for repositioning the locking bar such that the pressure control unit is inserted into the insertion unit according to a user's manipulation.

The unlocking unit may include an unlock button provided at one side of the immersion housing; An unlock frame connected to one side of the unlock button to control the position of the locking bar; A first elastic member for storing the elastic force when the lock button is pressed, and releasing the stored bar by releasing the stored elastic force when the unlock button is pressed; And a second elastic member for storing the elastic force when the unlock button is pressed and releasing the stored elastic force when the force of pressing the unlock button is released to return the unlock button and the unlock frame connected thereto.

A first fixing screw thread is provided at an upper end portion of the locking bar, and on one side of the unlock frame facing the locking bar, the locking bar may be adjusted to the first fixing screw thread so that the position of the locking bar can be finely adjusted according to the degree of pressing of the lock button. A second fixed screw thread may be provided.

The pressure control unit may include a pressure body protrudingly inserted into the through hole formed through the insertion unit; And a contact body connected to one end of the pressure body to have a size larger than the size of the through hole and having one side contacting the outer circumferential surface of the locking bar.

The central portion of the locking bar is provided with a first flange portion protruding from the surface, the central portion of the insertion portion adjacent to the pressure control portion is provided with a second flange portion protruding from the inner peripheral surface, the first elastic member is the first elastic member It may be disposed between the flange portion and the second flange portion.

The through holes are four through holes spaced apart from each other by a predetermined distance along the circumference of the insertion part, and the plurality of pressure adjusting parts are respectively inserted into the four through holes so as to uniformly press the inner circumferential surface of the sleeve. Dog pressure control unit.

The penetrating needle may further include a guide bar extending through the inside of the locking bar to guide the movement of the locking bar.

The main body, the coupling portion coupled to the upper end of the sleeve; And a head portion disposed above the coupling portion to penetrate the laparoscopic surgical instrument, wherein the head portion includes: a head housing connected to the coupling portion; A lip valve which is opened when the laparoscopic surgical instrument is inserted and is provided inside the head housing to be closed when the laparoscopic surgical instrument is separated; A gas sealing valve provided at an upper side of the lip valve to prevent the 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 gas sealing valve protection unit provided at an upper side of the gas sealing valve to prevent the gas sealing valve from being damaged by the laparoscopic surgical instrument and to minimize the insertion resistance generated when the laparoscopic surgical instrument is inserted. It may include.

The gas sealing valve protection unit, the hoop frame is provided to have a predetermined thickness and the hollow portion is formed therein; And one end may be fixed to the inner circumferential surface of the hoop frame may include a plurality of wings provided to be folded laterally and at the same time deformed downward when the laparoscopic surgical instrument is inserted.

The head part is interposed between the lip valve and the gas sealing valve, and prevents the lip valve from being damaged by the laparoscopic surgical instrument and minimizes the insertion resistance generated when the laparoscopic surgical instrument is inserted. To further include a lip valve protection unit is formed with a plurality of anti-slit slit.

The sleeve is a double line along the outer circumference along the outer circumferential surface to reduce the number of rotations for insertion when inserted into the body at the same time, and to maintain a fixed state inserted in the body during insertion and removal of the laparoscopic surgical instrument It may include a protruding thread.

The sleeve and the body is trocar assembly, characterized in that coupled to each other by a screwing method.

According to the present invention, the laparoscopic surgical instrument can be inserted at the correct position, while maintaining its shape when the sleeve is inserted, and can be easily removed from the sleeve when the sleeve is inserted. It is possible to provide a trocar assembly that can be.

1 is an exploded perspective view of a trocar assembly according to an embodiment of the present invention.
FIG. 2 is a perspective view of the body of the trocar assembly of FIG. 1. FIG.
3 is an exploded perspective view of a portion A of FIG. 2.
4 is a perspective view of the lip valve and the lip valve protection unit of FIG.
5 is a perspective view of the gas tight valve protection unit of FIG.
6 is a cross-sectional view of the needle of FIG. 1.
7 is an enlarged cross-sectional view of a portion B of FIG. 1.

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 an exploded perspective view of a trocar assembly according to an embodiment of the present invention, FIG. 2 is a perspective view of a main body of the trocar assembly of FIG. 1, FIG. 3 is an exploded perspective view of part A of FIG. 3 is a perspective view of the lip valve and the lip valve protection unit, Figure 5 is a perspective view of the gas sealing valve protection unit of Figure 3, Figure 6 is a cross-sectional view of the penetration of Figure 1, Figure 7 is a cross-sectional view of the portion B of Figure 1 It is an enlarged view.

Referring to these drawings, the trocar assembly 100 according to an embodiment of the present invention is a sleeve 110 that is inserted into the body fixed through the navel or skin incision of the patient and the sleeve 110 exposed to the outside The body 120 is coupled to the upper end, and the penetrating 140 is coupled to this when the sleeve 110 is inserted and separated from the sleeve 110 when the sleeve 110 and the body 120 is coupled.

Sleeve 110 is configured to be inserted through the body through the navel or skin incision of the patient to be inserted through the laparoscopic surgical instruments to be inserted through the body 120.

As shown in Figure 1, the sleeve 110 of the present embodiment is provided by forming a threaded portion (110a) on the outer peripheral surface of the hollow cylindrical shape. The threaded portion 110a is continuously formed along the circumference of the body so that the sleeve 110 can be inserted into the body while turning the sleeve 110 itself.

In addition, the threaded portion (110a) is formed of a double wire (two or three-wire screw) so that the sleeve can be inserted with only a small number of rotations when the sleeve 110 is inserted by turning.

The conventional sleeve is manufactured by a method such as providing a protrusion on the outer circumferential surface to have a constant fixed force in a state in which the outer circumferential surface has a smooth hollow cylindrical shape or inserted into the body, such a conventional sleeve is the convenience of insertion or firmness of fixing There was a problem in that only the pursuit of the mere aim of the convenience of the insertion and the firmness of the fixing at the same time.

In this embodiment, the thread 110a is formed on the outer circumferential surface of the sleeve 110 so that the thread 110a can be easily inserted into the patient's body according to the method of rotating the sleeve 110, and the fixing force of the thread 110a is fixed. As a result, even when the laparoscopic surgical instrument is inserted along the thin abdominal wall or the instrument is removed from the abdominal wall after the insertion of the sleeve 110 is completed, the sleeve 110 may not be detached.

The main body 120 is configured to be coupled to an upper end portion of the sleeve 110 that is exposed to the outside so that the laparoscopy instrument may be inserted and disposed through the sleeve 110.

As shown in FIG. 2, the main body 120 of the present embodiment includes a coupling portion 121 coupled to the sleeve 110, a head portion 130 disposed above the coupling portion 121, and a patient's body. It includes a pair of gas valves (T1, T2) provided on the upper side of the coupling portion 121 to inject gas into the interior.

Coupling portion 121 is coupled to the upper end of the sleeve exposed to the outside and at the same time provides a frame that can be provided with the head portion 130 and gas valves (T1, T2) to be described later.

A thread 121a is formed at the lower end of the coupling part 121 to be screwed to a thread (not shown) formed along the upper inner circumferential surface of the sleeve 110.

That is, in the present embodiment, when the main body 120 is coupled to the sleeve 110 that is separated from the penetrometer 140 and is exposed to the outside, the convenience of coupling by combining the main body 120 and the sleeve 110 according to the screwing method. In addition, the bond strength is secured.

Of course, a protrusion (not shown) is provided at the lower end of the coupling portion 121 in which the thread 121a is formed according to another embodiment of the present invention, and a protrusion insertion hole (not shown) is provided on the inner circumferential surface of the sleeve 110 corresponding thereto. The two may be combined by a fitting method.

Head portion 130 is configured to be disposed on the upper side of the coupling portion 121 so that various laparoscopic surgical instruments can penetrate. As shown in FIG. 2, the main body 120 of the present embodiment is provided in a multi-head type having a total of four head portions 130. However, the scope of the present invention is not limited by the number of heads, and the inside of each head portion 130 has substantially the same configuration, so that only one head portion 130 will be described below.

The head unit 130 includes a head housing 131, a lip valve 132 inserted into the lower side of the head housing 131, a lip valve protection unit 137 provided above the lip valve 132, and a lip. The gas sealing valve 133 provided above the valve protection unit 137, the gas sealing valve protection unit 134 provided above the gas sealing valve 133, and the upper side of the gas sealing valve protection unit 134. It comprises a cover (C) covering the.

The head housing 131 is configured to form a frame of the head unit 130 to provide a space into which various components such as the lip valve 132 can be inserted.

As shown in FIG. 3, the head housing 131 is composed of an upper housing 131a and a lower housing 131b, both of which are combined into one by fitting. In addition, the lower housing 131b is connected to the upper side of the coupling portion 121.

The lip valve 132 is open when the laparoscopic surgical instrument is penetrated, and is closed when the laparoscopic surgical instrument is completed, thereby preventing the gas injected into the body from leaking to the outside.

To this end, the lip valve 132 is provided with a material such as silicon having its own elastic force, and the incision line CL (see FIG. 4) is formed under the lip valve 132.

The lip valve protection unit 137 guides the insertion direction of the laparoscopic surgical instrument inserted into the lip valve 132 and at the same time, the lip valve 132 to prevent the lip valve 132 from being damaged when the surgical instrument is inserted. It is a structure arrange | positioned above.

As shown in FIGS. 3 and 4, the lip valve protection unit 137 has four slits 137a spaced apart from each other along the outer circumferential surface of the conical shape, and the slit 137a is formed at a lip. It is provided to be disposed in the recessed portion of the valve 132.

According to such a configuration, since the instrument inserted when the laparoscopic surgical instrument is inserted can be naturally inserted along the center portion of the lip valve 132, the lip valve 132 is prevented from being damaged by the sharp front portion of the surgical instrument. It becomes possible.

The gas sealing valve 133 is configured to prevent the gas injected into the body from leaking out as the lip valve 132 is opened when the laparoscopic surgical instrument is inserted. That is, even when the lip valve 132 is opened by the gas sealing valve 133 provided to be in close contact with the outer circumferential surface of the inserted laparoscopic surgical instrument, the gas injected into the patient's body may not leak to the outside. The gas sealing valve 133 is made of silicon material similarly to the lip valve 132.

The gas sealing valve protection unit 134 is configured to be disposed above the gas sealing valve 133 so as to prevent the gas sealing valve 133 from being damaged by the surgical instrument when the laparoscopic surgical instrument is inserted.

As shown in FIGS. 3 and 5, the gas tight valve protection unit 134 includes a hoop frame 135 and four wing portions 136 having one end fixed to an inner circumferential surface of the hoop frame 135.

The hoop frame 135 is provided to have a constant thickness and a hollow portion is formed therein, and the wing portion 136 is fixed at one end to an inner circumferential surface of the hoop frame 135 and the other end is freely folded up and down and laterally. It is a configuration that is prepared to be.

That is, the plurality of wings 136 is configured to minimize the resistance generated when the laparoscopic surgical instrument is inserted by folding downward and at the same time when the laparoscopic surgical instrument is inserted.

Conventionally, a protective unit is provided by overlapping a plurality of wing parts so as to protect the gas sealing valve 133. However, when the plurality of wing parts overlap, the insertion resistance is greatly generated when the laparoscopic surgical instrument is inserted. There is a problem that is difficult to move smoothly.

In this embodiment, a plurality of wing parts 136 can be simultaneously deformed (foldable) in order to solve such a problem, so as to protect the gas sealing valve 133 and the convenience of operation of the surgical instrument. Let's plan at the same time.

After the lip valve 132, the lip valve protection unit 137, the gas sealing valve 133, and the gas sealing valve protection unit 134 are inserted into the head housing 131, they are coupled to the upper housing 143a. By covering the cover C, the configuration of the head portion 130 is completed.

Head portion 130 of the present embodiment is a lip valve 132 and the gas sealing valve 133 to prevent the gas leakage injected into the body and laparoscopic surgery instruments to help insert into the central portion of the lip valve 132 By including the lip valve protection unit 137 and the gas tight valve protection unit 134 to prevent damage to the lip valve 132 and the gas tight valve 133 made of silicon can be leaked to the outside of the body at the same time It is possible to perform the role of blocking the gas present perfectly.

On the other hand, the penetrating 140 is to ensure that the sleeve 110 is made of a soft material such as silicon when the sleeve 110 is inserted to maintain a constant shape, and when the insertion fixing of the sleeve 110 is completed from the sleeve 110 By separating smoothly, the main body 120 and the sleeve 110 are configured to be fastened to each other.

As shown in FIGS. 1, 6, and 7, the penetration needle 140 may include a penetration housing 150, an insertion portion 160 protruding from a lower end of the penetration housing 150, and an insertion portion 160. Protruding outwardly or inserted into the plurality of pressure adjusting units 170 for pressing or releasing the inner circumferential surface of the sleeve 110, and the pressure adjusting unit 170 to the outside of the inserting unit 160 according to a user's manipulation. And a locking unit 180 to protrude, and an unlocking unit 190 to allow the pressure adjusting unit 170 to be inserted into the inserting unit 160 when the penetrating 140 is separated from the sleeve 110. .

The penetrating housing 150 is a hollow member forming a frame of the penetrating 140, and each of the locking unit 180 and the unlocking unit 190, which will be described later, is formed inside the penetrating housing 150 along the inner hollow portion. The components are built in.

The insertion unit 160 protrudes from the lower end of the penetrating housing 150 and is inserted into the sleeve 110. To this end, the diameter of the insert 160 is provided to a size slightly smaller than the diameter of the sleeve 110.

In addition, four through holes are formed along the circumference of the insertion unit 160. Along the through holes, the pressure body 171 of the pressure adjusting unit 170 to be described later may protrude or be inserted.

The pressure control unit 170 protrudes to the outside of the insertion unit 160 in accordance with the adjustment of the locking unit 180 to be described later to press the inner circumferential surface of the sleeve 110 or the insertion unit in accordance with the adjustment of the unlocking unit 190. By inserting into the inside of the 160 is a configuration that allows the piercing 140 to be separated from the sleeve 110 smoothly.

The pressure control unit 170 includes a pressure body 171 inserted into the through hole formed through the insertion unit 160 and a contact body 172 in contact with the outer circumferential surface of the locking bar 182.

The pressure body 171 is provided to have a size slightly smaller than the size of the through hole is a configuration that protrudes or inserted along the through hole, the contact body 172 is connected to one side of the pressure body 171 of the pressure body 171 It is a configuration having a size larger than the size of the through-hole so that it can be caught by the through-hole when protruding.

In addition, one end of the contact body 172 is provided to have a round surface to contact the outer peripheral surface of the locking bar 182.

The locking unit 180 is configured to allow the pressure control unit to protrude to the outside of the insertion unit 160 according to a user's manipulation.

Locking unit 180 is connected to the lock button 181 and the lock button 181 is provided so that the user can press with a finger, when the lock button 181 is pressed while pressing the pressure control unit 170 while moving downward The body 171 includes a locking bar 182 to protrude out of the insertion unit 160.

The locking bar 182 is tapered so that the width gradually narrows from the upper end to the lower end. Accordingly, when the lock button 181 is pressed, the locking bar 182 moves downward while pushing the pressure body 171 downward. do.

In addition, the locking bar 182 is provided using a hollow hollow tube, the guide bar (G) is extended to the inside of the locking bar 182 to guide the vertical movement of the locking bar 182. .

On the other hand, the unlocking unit 190 is configured to allow the pressure adjusting unit 170 to be inserted into the insertion unit 160 in accordance with the user's operation when trying to separate the penetrating 140 from the sleeve 110.

The unlocking unit 190 has an unlock button 191 provided at one side of the penetration housing 150, an unlock frame 192 connected to the unlock, and a locking bar 182 when the unlock button 191 is pressed. The first elastic member 193 and the second elastic member 194 for repositioning the unlock frame 192 when the unlock button 191 is pressed.

The unlock button 191 is configured to be provided on one side of the immersion housing 150 so that the user can press with a finger when separating the immersion 140 from the sleeve 110, the unlock frame 192 is the locking bar 182 The configuration is connected to one side of the unlock button 191 to control the position of.

In addition, the unlock frame 192 is configured to include a first unit frame 192a disposed adjacent to the unlock button 191 and a second unit frame 192b connected to the first unit frame 192a. Of course, the first unit frame 192a and the second unit frame 192b may be integrally manufactured.

As shown in FIGS. 6 and 7, a first fixed screw thread 182a is provided on the outer circumferential surface of the upper end of the locking bar 182, and the first fixed screw thread 182a is a second unit facing the locking bar 182. The second fixing screw thread (not shown) is provided on one side of the frame 192b.

Accordingly, when the user presses the lock button 181, the second unit frame 192b is pushed to one side and returned to its original position by the second elastic member 194 according to the degree of the lock button 181 being pressed. Will be repeated. That is, the fine adjustment of the position of the locking bar 182 is enabled.

The first elastic member 193 is configured to store the elastic force when the lock button 181 is pressed, and to release the locking bar 182 by releasing the stored elastic force when the unlock button 191 is pressed, and the second elastic member 193. When the unlock button 191 is pressed, the elastic force is stored, and when the force of pressing the unlock button 191 is released, the unlocked button 191 and the unlock frame 192 connected thereto are released by releasing the stored elastic force. It is a structure to let.

In the present embodiment, the first elastic member 193 and the second elastic member 194 are provided using a common coil spring, respectively. However, according to another embodiment of the present invention, the first elastic member 193 and the second elastic member 194 may be replaced with an elastic body such as a leaf spring.

The first elastic member 193 is formed of the first flange portion 182b protruding from the surface at the central portion of the locking bar 182 and the second flange portion 160a protruding from the inner circumferential surface at the central portion of the insertion portion 160. Interposed therebetween, the second elastic member 194 is interposed between one inner peripheral surface of the penetration housing 150 and one outer peripheral surface of the second unit frame 192b to facilitate installation.

Now, a method of using the trocar assembly 100 of the present embodiment will be described in detail.

Laparoscopic surgery, the user who wants to insert the sleeve 110 into the patient's body before proceeding proceeds to the operation to ensure that the insertion portion 160 of the piercing 140 is fixed to the sleeve 110 (① of FIG. 1). ). To this end, first, the insertion portion 160 of the penetrating 140 is arranged to penetrate along the inside of the sleeve 110, and presses the lock button 181.

When the lock button 181 is pressed, the locking bar 182 integrally connected thereto gradually moves from the upper side to the lower side. In this case, the locking bar 182 is tapered from the upper end to the lower end of the locking bar 182. In accordance with the movement of the pressure control unit 170 is pushed outward.

That is, since the contact body 172 in contact with the outer circumferential surface of the locking bar 182 is pushed outward as the locking bar 182 moves, the pressure body 171 integrally formed with the contact body 172 is inserted into the insertion part ( It is to be protruded along the through hole formed in 160.

In addition, according to the degree to which the lock button 181 is pressed, the first fixed screw thread 182a provided in the locking bar 182 is stepped to the second fixed screw thread provided in the second unit frame 192b constituting the unlock frame 192. It is to be bite, through which it is possible to easily adjust the degree of protrusion of the pressure body (171).

That is, the locking bar 182 is configured to move downward in a stepwise process through which the first fixing screw thread 182a and the second fixing screw thread are coupled to or released from each other, so that the locking button 181 is pressed according to the degree of pressing the lock button 181. The degree to which the body 171 protrudes is to be determined.

When the pressure body 171 sufficiently presses the lock button 181 to press the inner circumferential surface of the sleeve 110 with sufficient force, the sleeve 110 and the penetrating 140 integrally coupled thereto are inserted into the patient's body. And fix it.

The sleeve 110 is not only maintained in a constant shape through the pressure control unit 170 of the penetrating 140, but because the threaded portion (110a) is formed on the outer peripheral surface thereof is smoothly inserted into the patient's body according to the rotation and fixed It becomes possible.

When the fixing of the sleeve 110 is completed, the user presses the unlock button 191. When the unlock button 191 is pressed, the unlock frame 192 integrally connected thereto is first moved in one direction. The bond between the first fixed screw thread 182a and the second fixed screw thread is dismantled.

At the same time, the locking bar 182 is raised to its original position by the first elastic member 193 that stores the elastic force when the lock button 181 is pressed, and the pressure regulating unit is restored according to the return of the locking bar 182 to the original position. The pressure body 171 of 170 is inserted into the through hole of the insertion unit 160.

In addition, when the locking bar 182 is raised to a certain degree, since the position of the first fixing screw thread 182a is completely away from the second fixing screw thread, when the force used to press the unlock button 191 is released, the second elastic member ( As the stored elastic force of 194 is released, the unlock button 191 and the unlock frame 192 are repositioned to prepare for reuse.

Eventually, as the pressure body 171 is inserted into the through hole, the force that pressurizes the inner circumferential surface of the sleeve 110 is released, so that the piercing 140 can be smoothly separated from the sleeve 110 and the piercing 140 is removed. It can be reused.

After separating the penetrating 140 from the sleeve 110, the main body 120 and the sleeve 110 are coupled (2 in FIG. 1) and gas is injected along the gas valves T1 and T2 provided in the main body 120. And, through the head 130 to insert a variety of laparoscopic surgical instruments to proceed with the surgery.

The trocar assembly 100 of the present embodiment maintains its shape when the sleeve 110 is inserted and includes a piercing 140 that can be easily removed from the sleeve 110 when the sleeve 110 is inserted. The surgical instrument has the advantage of providing a trocar assembly that allows for ease of use while allowing the surgical instrument to be inserted in the correct position.

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.

100: trocar assembly 110: sleeve
120: main body 121: coupling portion
130: head 140: piercing

Claims (15)

A hollow cylindrical sleeve inserted into the body through the navel or the skin incision of the patient and provided with an elastic material;
A body coupled to an upper end portion of the sleeve exposed to the outside so that the laparoscopic surgical instrument may be inserted and disposed through the sleeve; And
When the sleeve is inserted, the inner peripheral surface of the sleeve is pressed to maintain the shape of the sleeve so that the sleeve can be smoothly inserted into the body through the navel or the skin incision window, and when the insertion of the sleeve is completed, the main body And a piercing needle that is smoothly separated from the sleeve by releasing the pressurized state against the sleeve so as to be coupled to the sleeve. The method of claim 1,
The piercing,
Osmosis housing;
An insertion part protruding from the lower end of the penetration housing and inserted into the sleeve;
A plurality of pressure adjusting units which press or release the inner circumferential surface of the sleeve by protruding to the outside or inserted into the insert; And
And a locking unit provided to move along the inside of the penetration housing and the insertion part such that the pressure control part protrudes to the outside of the insertion part according to a user's operation. The method of claim 2,
The locking unit,
A lock button provided to protrude from an upper end of the penetrating housing; And
The trocar is tapered so that the width of the lock button is narrowed from the upper end to the lower end at the lower side of the lock button, and includes a locking bar for moving the pressure control unit to protrude to the outside of the insertion unit while moving to the lower side when the lock button is pressed. assembly. The method of claim 3,
The trocar assembly further comprising an unlocking unit for repositioning the locking bar such that the pressure control unit is inserted into the insertion unit according to a user's manipulation. 5. The method of claim 4,
The unlocking unit,
An unlock button provided at one side of the immersion housing;
An unlock frame connected to one side of the unlock button to control the position of the locking bar;
A first elastic member for storing the elastic force when the lock button is pressed, and releasing the stored bar by releasing the stored elastic force when the unlock button is pressed; And
And a second elastic member for storing the elastic force when the unlock button is pressed and releasing the stored elastic force to release the unlocked button and the unlock frame connected thereto by releasing the stored elastic force when the force of pressing the unlock button is released. Trocar assembly. The method of claim 5,
The first fixing screw thread is provided on the upper end of the locking bar,
One side of the unlock frame facing the locking bar, a trope characterized in that the second fixed screw thread that is bitten by the first fixed screw thread is provided so that the position of the locking bar can be finely adjusted according to the degree of pressing the lock button. Car assembly. The method of claim 3,
The pressure control unit,
A pressure body protrudingly inserted into the through hole formed through the insertion part; And
And a contact body connected to one end of the pressure body to have a size larger than that of the through hole and having one side contacting the outer circumferential surface of the locking bar. The method according to claim 6,
The central portion of the locking bar is provided with a first flange portion protruding from the surface,
A second flange portion protruding from an inner circumferential surface is provided at the central portion of the insertion portion adjacent to the pressure regulating portion,
And the first elastic member is disposed between the first flange portion and the second flange portion. The method of claim 7, wherein
The through holes are four through holes spaced apart from each other by a predetermined distance along the circumference of the insertion portion,
The plurality of pressure control unit is a trocar assembly, characterized in that the four pressure control unit is inserted into each of the four through holes so as to uniformly press the inner peripheral surface of the sleeve. The method of claim 3,
The piercing,
And a guide bar extending through the inside of the locking bar to guide the movement of the locking bar. The method of claim 1,
The main body includes:
A coupling part coupled to an upper end of the sleeve; And
It includes a head portion disposed on the upper side of the coupling portion to penetrate the laparoscopic surgical instrument,
Wherein:
A head housing connected to the coupling part;
A lip valve which is opened when the laparoscopic surgical instrument is inserted and is provided inside the head housing to be closed when the laparoscopic surgical instrument is separated;
A gas sealing valve provided at an upper side of the lip valve to prevent the 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
The gas sealing valve protection unit is provided on the upper side of the gas sealing valve to prevent the gas sealing valve from being damaged by the laparoscopic surgical instrument, and to minimize the insertion resistance generated when the laparoscopic surgical instrument is inserted. Trocar assembly comprising a. The method of claim 11,
The gas sealing valve protection unit,
A hoop frame provided to have a predetermined thickness and having a hollow portion formed therein; And
One end portion is fixed to the inner circumferential surface of the hoop frame trocar assembly characterized in that it comprises a plurality of wings provided to be folded laterally and deformed at the same time when the laparoscopic surgical instrument is inserted. The method of claim 11,
Wherein:
Is interposed between the lip valve and the gas sealing valve, to prevent the lip valve from being damaged by the laparoscopic surgical instruments and at the same time to minimize the insertion resistance generated during the insertion of the laparoscopic surgical instruments A trocar assembly further comprising a lip valve protection unit having an anti-slit slit. The method of claim 1,
The sleeve,
In the case of inserting by turning inside the body, the number of rotations for insertion is reduced, and at the same time, the thread portion protruding into the double line along the outer circumference along the outer circumferential surface is maintained so that the inserted and fixed state inside the body can be continuously maintained when the laparoscopic surgical instrument is inserted and removed. Trocar assembly comprising a. The method of claim 1,
The sleeve and the body is trocar assembly, characterized in that coupled to each other by a screwing method.

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