KR102147765B1 - Trocar assembly - Google Patents

Abstract

The present invention relates to a trocar assembly compatible with patients of various body types. According to the present invention, the trocar assembly includes: a body part (100) which has a penetration needle (120) inserted into abdomen of a patient, and a body (110) coupled to a rear end of the penetration needle (120); and an elastic support part (200) into which the penetration needle (120) is penetrated and inserted, and has a length extending and contracting elastically in a length direction of the penetration needle (120).

Description

Trocar assembly{TROCAR ASSEMBLY}

The present invention relates to a trocar assembly, which can be used interchangeably with patients of various body types, and to a trocar assembly capable of automatically fixing a position on the skin by an elastic force.

Unlike conventional laparoscopic surgery, laparoscopic surgery is performed while observing the inside of the abdominal cavity by making an incision in the abdomen of about 0.5 to 1 cm, making 3 to 4 holes, inserting a laparoscope. For laparoscopic surgery, a number of trocars are inserted into the patient's abdomen, and gas such as carbon dioxide is injected through any one trocar to create intra-abdominal relief to secure an operating space. In addition, the procedure is performed while observing the surgical site using an endoscope and a surgical instrument inserted through another trocar.

An example of a conventional trocar has been disclosed in Korean Patent Publication No. 10-2015-0144954 "Trocar".

1 and 2 are schematic diagrams showing the configuration and use process of a conventional trocar 10. As shown, the conventional trocar 10 includes a trocar 11 inserted into the patient's abdomen 11, a balloon 12 coupled to the tip of the trocar 11, and a trocar 13 surrounding the trocar 13 ), and a body 14 coupled to the trocar 13, and a skin fixing member 17 that is moved along the trocar 13 and fixed to the patient's skin (A).

When using the conventional trocar 10, as shown in FIG. 1, the tip of the trocar 11 is inserted into the patient's abdomen B, and air is supplied through the air supply pipe 15. Air is supplied to the balloon 12 through the space between the trocar 11 and the trocar 13 to inflate the balloon 12.

As shown in FIG. 2, when the balloon 12 is inflated, the position is fixed inside the abdomen B of the patient. At this time, the doctor or nurse pressurizes the skin fixing member 17 by hand and moves it along the trocar 13 to make it in close contact with the patient's skin 17. Accordingly, the balloon 12 and the skin fixing member 17 are in close contact with the abdomen and the skin so that the location of the trocar 10 is fixed.

However, in the conventional trocar 10, the length (L1) at which the permeate needle 11 is inserted into the abdomen injected with gas is different depending on the patient's body shape, that is, a skinny body or a fat body. Accordingly, the conventional trocar 10 is provided with different types of the overall length (L2) of the trocar 11 inserted into the abdomen of the patient. In the case of a slender patient, a trocar with a short overall length (L2) was used, and in the case of a fat patient, a trocar having a long overall length (L2) was used.

In addition, the conventional trocar 10 has a disadvantage in that the procedure is complicated and cumbersome since the operator must directly move the skin fixing member 17 after inflating the balloon 12 by supplying air.

An object of the present invention is to solve the above-described problem, and to provide a trocar assembly that can be used interchangeably with patients of various body types with one length.

Another object of the present invention is to provide a trocar assembly that automatically moves by an elastic force without manual manipulation by a practitioner and is in close contact with the patient's skin to fix the position.

Another object of the present invention is to provide a trocar assembly that can be easily separated and used when a relatively large tissue must be removed during surgery.

Another object of the present invention is to provide a trocar assembly capable of minimizing leakage of gas injected into the abdomen of a patient to the outside.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention by those skilled in the art.

The object of the present invention can be achieved by the trocar assembly. The trocar assembly of the present invention includes a body portion 100 having a body 110 coupled to the rear end of the trocar 120 and a trocar 120 inserted into the abdomen of the patient; The penetration needle 120 is inserted through the inside and is provided to elastically extend and contract in the length direction of the penetration needle 120, and when the penetration needle 120 is inserted into the abdomen of the patient, the length is elastically increased. Including an elastic support portion 200 that is contracted and supported in close contact with the skin of the patient, wherein the elastic support portion 200 accommodates the permeation needle 120 therein, and the immersion tube 210 of a hard material provided to be variable in length and; An elastic cap 220 that accommodates the immersion tube 210 inside, the tip is fixedly coupled to the immersion tube 210 and is made of an elastic material; Separation cap 230 is detachably coupled to the upper portion of the immersion tube 210 and is detachably coupled to the body 110 when the elastic cap 220 and the immersion tube 210 are lengthened. Including, the immersion pipe 210, and a fixed pipe 211; A moving tube 213 movably coupled to the fixing tube 211 and having a tip fixed to the tip of the elastic cap 220; An immersion pipe support pipe 216 coupled to an upper portion of the fixed pipe 211 and to which a gas inlet pipe 240 for introducing gas into the fixed pipe 211 is coupled to an outer periphery; A gas that is seated on the stepped portion 216a of the submerged pipe support pipe 216 and prevents the gas flowing back into the fixing pipe 211 through the gas inlet pipe 240 in the direction of the separation cap 230 A leakage blocking member 217; It is fixedly coupled to the submerged tube support pipe 216, characterized in that it comprises a separation cap connecting member 219 coupled to the separation cap 230.

According to an embodiment, the separation cap 230 includes a lower coupling ring 231 detachably coupled to the separation cap connection member 219; A lower gas backflow prevention member 235 coupled to the upper surface of the lower coupling ring 231 to allow the movement of the permeate 120 and prevent the upward movement of the gas; An upper gas backflow preventing member 237 which is coupled to be superimposed on an upper portion of the lower gas backflow preventing member 235 to allow movement of the penetrating needle 120 and prevent upward movement of gas; It is fixedly coupled to the lower coupling ring 231, and includes an upper coupling ring 239 detachably coupled to the body 110 when the length of the elastic cap 220 and the immersion tube 210 is elongated, and , A plurality of coupling hooks 231a protruding toward the lower portion at predetermined angle intervals along the radial direction are provided on the outer periphery of the lower coupling ring 231, and the upper outer periphery of the separating cap connecting member 219 is provided with the A coupling hook fitting groove (219c) into which the coupling hook (231a) is fitted, and a hook fitting rail (219d) formed in a spiral shape to be connected to the coupling hook fitting groove (219c) to fix the position of the coupling hook (231a) It can be provided.

According to one embodiment, the gas leakage blocking member 217 is formed in a bag shape formed of an elastic material extending toward the bottom, and the gas leakage blocking member 217 is cut in a "+" shape to When the penetrating needle 120 is moved, a penetrating cutting line 217 that opens corresponding to the diameter of the penetrating needle 120 may be provided.

According to an embodiment, the lower gas backflow prevention member 235 is formed to protrude toward the lower portion and is provided with a hemispherical rubber film 235c having a hemispherical shape in which a lower surgical member movable hole 235d is formed through the middle region, and the A plurality of cutout grooves 235e are radially formed in the hemispherical rubber film 235c, and the upper gas backflow prevention member 237 is a plurality of elastic skirts 237b disposed along the circumferential direction of the hemispherical rubber film 235c. ), and when the gas flows backward from the bottom, the hemispherical rubber film (235c) moves upward and presses the plurality of elastic skirts (237b), and the plurality of elastic skirts (237b) gather in the center direction. The lower surgical member moving hole 235d may be blocked.

The trocar assembly according to the present invention can be used interchangeably with patients of various body types by using a single length of the trocar. Accordingly, it is possible to solve the conventional inconvenience of replacing and using trocars of different lengths for patients of different body types.

In addition, in the trocar assembly according to the present invention, the user manipulates the detachable operation bar using the elastic force of the elastic cap so that the elastic support part automatically adheres to the patient's skin. Accordingly, the inconvenience of manually moving the skin fixing member during the laparoscopic procedure can be eliminated.

In addition, the trocar assembly according to the present invention has the convenience that the separation cap is detachably coupled to the immersion tube, so that it can be separated and used according to the size of the tissue to be stored during surgery.

In addition, the trocar assembly according to the present invention has a triple structure of a gas leakage blocking member, a lower gas backflow prevention member, and an upper gas backflow prevention member to prevent gas leakage to prevent the gas injected into the patient's abdominal cavity from leaking to the outside. It has the advantage of being able to block stably.

1 and 2 are schematic diagrams showing the configuration and operation process of a conventional trocar,
3 is a perspective view showing a state in which the body portion and the elastic support portion of the trocar assembly according to the present invention are separated;
4 is a perspective view showing a state in which an elastic support part is inserted into the main body of the trocar assembly according to the present invention;
5 is a perspective view showing a state in which an elastic support portion is extended and coupled to the body portion of the trocar assembly according to the present invention;
6 is a perspective view showing a state in which the separation cap is separated from the elastic support portion of the trocar assembly according to the present invention;
7 and 8 are exploded perspective views showing the exploded configuration of the trocar assembly according to the present invention,
9 and 10 are exemplary views showing the gas backflow prevention structure of the trocar assembly according to the present invention,
11 to 13 are cross-sectional views showing a process of using the trocar assembly according to the present invention.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those with average knowledge in the art. Accordingly, the shape of the element in the drawings may be exaggerated to emphasize a clearer description. It should be noted that in each drawing, the same member may be indicated by the same reference numeral. Detailed descriptions of known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention will be omitted.

3 is a perspective view showing a state in which the body portion 100 and the elastic support portion 200 of the trocar assembly 1 according to the present invention are separated, and FIG. 4 is a body portion 100 of the trocar assembly 1 It is a perspective view showing a state in which the elastic support portion 200 is fitted to the permeation needle 120 of, and FIG. 5 is a perspective view showing a state in which the elastic support portion 200 is extended and coupled to the body portion 100.

As shown, the trocar assembly 1 according to the present invention includes a body portion 100 for supporting the permeate 120 and an elastic support portion 200 that is elastically stretched and contracted to the permeate 120 do. The elastic support 200 is inserted into the penetrating needle 120 by penetrating through the penetrating needle 120 as shown in FIG. 4, and is elastically extended to the body 110 as shown in FIG. Or, it is released from the main body 110 and elastically contracted and supported in contact with the patient's skin.

In addition, the trocar assembly 1 according to the present invention is a separation cap of the elastic support part 200 as shown in FIG. 6 when it is necessary to extract tissues from the surgical site during the week of surgery using a surgical tool (not shown). There is an advantage of separating (230) to facilitate tissue extraction.

The main body 100 serves as a trigger to press the penetrating needle 120 or a surgical tool (not shown) to the abdomen of the patient, and the elastic support 200 to be in close contact with the patient's skin. The main body 100 includes a main body 110 formed in a rod shape as shown in FIGS. 3 and 7, and a penetrating needle 120 coupled to the front end of the main body 110 and inserted into the abdomen of the patient.

The main body 110 has a predetermined length formed at the front end to which the penetrating needle 120 is coupled to the upper coupling ring 239 of the elastic support portion 200, and a handle held by the operator at the rear end ( 111) is provided, and a detachable operation bar 113 for binding the upper coupling ring 239 to the support pipe 112 or releasing the binding state is provided on the outer circumferential surface of the main body 110.

The body 110 fixes the rear end of the penetrating needle 120 inserted through the piercing/detaching hole 111a formed in the handle 111. The penetrating needle 120 is accommodated in the body 110 at the rear end, and the front end is exposed to the front of the body 110 for a predetermined length. Inside the main body 110, as shown in FIG. 11, a needle guide hole 115 for supporting the penetrating needle 120 and a plate spring 113c of the detachable operation bar 113 are moved up and down by a lever principle. A hook support shaft 113e for supporting the spring 113c is provided.

The handle 111 is formed in a shape that can be easily gripped by the operator. At the rear end of the handle 111, a penetration/detachment hole 111a is formed so that the operator can insert the penetration needle 120 or a surgical tool (not shown) into the body 110.

The support pipe 112 is formed to extend a predetermined length from the front end of the main body 110, and the upper coupling ring 239 when the length of the elastic support part 200 is extended as shown in FIGS. 5 and 11(b). ) Is accommodated inside. The locking hook (113b) formed at the front end of the detachable operation bar (113) formed on the outer circumferential surface of the main body (110) extends toward the support pipe (112) to support the upper coupling ring (239) accommodated in the support pipe (112). do.

The detachable operation bar 113 is engaged with the upper coupling ring 239 of the elastic support part 200 whose length is elastically elongated, so that the elastic support part 200 maintains a longer length, and FIG. 12(a) ), when the user pressurizes, the engagement with the upper coupling ring 239 is released, so that the elastic support part 200 is contracted.

The detachable operation bar 113 is formed in the shape of a bar inserted into the main body 110. A pressure button 113a that the operator presses is formed to protrude on the upper part of the detachable operation bar 113, and a hook support shaft 113e is provided at the lower part of the detachable operation bar 113 in a direction opposite to the pressure button 113a. It is elongated. The hook support shaft 113e also serves to form a moving path of the penetrating needle 120 inserted into the body 110.

On the other hand, the end of the detachable operation bar 113 is provided with a locking hook (113b) is engaged with the hook engaging projection (239c) of the upper coupling ring (239).

When the user presses the pressing button 113a, the detachable operation bar 113 moves obliquely around the hook support shaft 113e as shown in (a) of FIG. 12, and the locking hook 113b moves upward. Can be heard. Accordingly, the locking hook 113b is released from the upper coupling ring 239.

On the other hand, an interlocking member 117 is provided inside the main body 110 to transmit the pressing of the pressing button 113a provided on the upper part to a pair of detachable operation bars 113 provided at the top and bottom. The interlocking member 117 is provided in the form of a spring, and when the user's pressure disappears, the pair of detachable operation bars 113 are horizontally returned.

The penetrant 120 is inserted into the patient's abdomen. The penetrating needle 120 is inserted through the body 110 and the tip is exposed to the outside. The tip of the penetrating needle 120 exposed to the outside is inserted into the elastic support part 200. The sharp needle tip 121 of the penetrating needle 120 is exposed to the outside through the needle external exposure hole 221a.

Here, the length of the penetrating needle 120 exposed to the front end of the main body 110 without being accommodated in the main body 110 (L in FIG. 3) is the longest length compared to the trocar 10 provided with various lengths in the related art. It is formed to correspond to the length of the trocar 10 having.

After the elastic support 200 is inserted into the permeate 120 of the main body 100, its length is elastically adjusted and is supported in close contact with the patient's skin so that the position of the trocar assembly 1 is fixed. The elastic support part 200 includes an immersion pipe 210 for guiding the permeation needle 120, an elastic cap 220 coupled to the outside of the immersion pipe 210 and formed of an elastic material, and the immersion pipe 210 and an elastic cap It couples 220 to each other and includes a separation cap 230 that is detachably coupled to the main body 100.

7 and 8 are exploded perspective views showing an exploded configuration of the elastic support part 200. As shown, the submerged pipe 210 includes a fixed pipe 211 and a moving pipe 213 coupled to overlap each other, a fixed pipe connector 215 coupled to the upper portion of the fixed pipe 211, and a fixed pipe connector 215. A gas leakage blocking member 217 that is accommodated in the fixed pipe connection pipe 215 through the submerged pipe support pipe 216 provided in the upper part and the submerged pipe support pipe 216 to prevent gas leakage, and a fixed pipe ( An elastic cap fixed cap 218 that is inserted into the fixed pipe connector 215 through 211) to fix the elastic cap 220 to the immersion pipe 210, and a separation cap fixedly coupled to the upper surface of the immersion pipe support pipe 216 It includes a connecting member 219 and a lower packing member 212 coupled to the upper surface of the separation cap connecting member 219.

The fixed pipe 211 and the moving pipe 213 are formed of a hard material and are coupled to overlap each other. The fixed pipe 211 and the moving pipe 213 change in length in conjunction with the change in length of the elastic cap 220 and accommodate the penetrating needle 120 therein. A moving pipe insertion hole 211a is formed open at the front end of the fixed pipe 211, and the fixed pipe coupling pipe 215 is coupled to the rear end. The movable pipe 213 is accommodated inside or protruded to the outside through the movable pipe insertion hole 211a of the fixed pipe 211, so that the length of the entire immersion pipe 210 is extended or reduced.

At this time, a ring insertion hole 211b is formed at the front end of the fixing tube 211, and a fixing ring 214 is inserted into the ring insertion hole 211b. The fixing ring 214 is formed in the shape of a plate spring having an elastic force, and both ends are inserted to protrude toward the moving pipe 213 through the ring insertion hole 211b. When the moving tube 213 is moved back and forth, both ends of the fixing ring 214 are pressed against the inner wall surface of the moving tube 213 so as not to interfere with the movement of the moving tube 213.

On the other hand, when the moving pipe 213 is exposed from the fixed pipe 211 as much as possible, the end of the fixed ring 214 is caught in the hook engaging groove 213b of the moving pipe 213, and the moving pipe 213 is no longer of the fixed pipe 211 It prevents movement to the outside. This prevents the moving pipe 213 from being separated to the outside of the fixed pipe 211.

The tip of the moving pipe 213 is provided with a needle internal exposure hole 213a for exposing the needle tip 121 of the penetrating needle 120 to the outside. Here, the front end of the moving pipe 213 forms an inclined surface whose diameter is gradually increased, and at the end thereof, a locking end 213c formed to be depressed at a predetermined depth from the surface of the moving pipe 213 is provided.

The locking end 213c is engaged with the inner wall surface of the needle external exposure hole 221a of the elastic tube 221 as shown in FIG. 11. That is, the locking end 213c is supported by the inner wall surface of the needle external exposure hole 221a, so that the length of the elastic cap 220 may be elastically increased.

7 and 8, the fixed pipe connection pipe 215 is provided on the upper portion of the fixed pipe 211, and the gas inlet pipe 240 is coupled to the outer circumferential surface. The fixed pipe connection pipe 215 connects the fixed pipe 211 and the submerged pipe support pipe 216. The fixed pipe connector 215 is provided with a diameter larger than that of the fixed pipe 211 and has a smaller diameter than the submerged pipe support pipe 216.

A gas inlet pipe 240 is integrally formed on the side of the fixed pipe connection pipe 215, and a gas inlet hole (not shown) communicating with the gas inlet pipe 240 is formed on the side to which the gas inlet pipe 240 is coupled. do. The gas introduced through the gas inlet hole (not shown) is moved along the fixed pipe 211 and the moving pipe 213 and then supplied to the abdomen of the patient.

The submerged pipe support pipe 216 is provided on the upper portion of the fixed pipe connection pipe 215 and fixes the positions of the elastic cap fixing cap 218 and the separating cap connection member 219 fitted through the fixed pipe connection pipe 215. The submerged pipe support pipe 216 has a larger diameter than the fixed pipe connector 215. Due to this difference in diameter, a stepped portion 216a is formed in a predetermined area in the coupling region of the submerged pipe support pipe 216 and the fixed pipe connector 215.

In the stepped jaw 216a, protrusion insertion holes 216b into which the fitting protrusions 218e of the elastic cap fixing cap 218 are inserted are formed at predetermined angle intervals. Accordingly, when the elastic cap fixing cap 218 is fitted into the fixing pipe connector 215, the fitting protrusion 218e is inserted into the protrusion insertion hole 216b to fix the position of the elastic cap fixing cap 218.

Hook fitting holes 216c are formed on the upper side wall of the stepped jaws 216a at predetermined angular intervals. The support pipe coupling hook (219b) of the separation cap connecting member 219 is inserted into the hook fitting hole (216c). Thereby, the separating cap connecting member 219 is fixed to the submerged pipe support pipe 216.

The gas leakage blocking member 217 is mounted on the immersion pipe support pipe 216 so that the gas flowing into the immersion pipe 210 through a gas inlet hole (not shown) flows upward and moves toward the separation cap 230 Prevent it from becoming.

The gas leakage blocking member 217 is accommodated in the fixed pipe connection pipe 215 having a gas inlet hole (not shown) formed in the form of a rubber bag to shield the gas flowing to the top of the gas inlet hole (not shown) do. A seating ring 217b is provided in the upper edge region of the gas leakage blocking member 217. The seating ring (217b) is seated on the stepped (216a) of the immersion pipe support pipe 216 so that the gas leakage blocking member 217 is fixed in the position between the immersion pipe support pipe 216 and the separating cap connection member 219 do.

The gas leakage blocking member 217 has a "+" shaped permeation moving incision line 217 in the lower center. The lower part of the gas leakage blocking member 217 is formed in a form in which four triangular pyramid patterns 217c are gathered at the vertices around the "+"-shaped penetrative moving incision line 217.

Each triangular pyramid pattern 217c serves to form an elastic force in the direction in which the penetrating cutting line 217 is closed. Accordingly, if the penetration needle 120 is not inserted, the penetration needle movement of the gas leakage blocking member 217 is closed, and when the penetration needle 120 is inserted, the penetration needle 120 moves to the area corresponding to the diameter. Only the incision line 217 is open and the rest of the area is closed.

Accordingly, it is minimized that the gas introduced into the gas inlet hole (not shown) is blocked by the gas leakage blocking member 217 and flows back upward.

The elastic cap fixing cap 218 fixes the elastic cap 220 to the immersion tube 210. The elastic cap fixing cap 218 is formed to have an inner diameter corresponding to the outer diameter of the fixed pipe connection pipe 215 so that it can be fitted into the fixed pipe connection pipe 215. A lower fitting hole 218a corresponding to the outer diameter of the elastic tube 221 of the elastic cap 220 is formed under the elastic cap fixing cap 218.

The elastic cap fixing cap 218 through the lower fitting hole 218a is fitted outside of the fixing pipe 211 covered with the elastic cap 220.

On the inner wall surface where the lower fitting hole 218a is formed, a separation cap pressing protrusion 218c is formed in a predetermined area. An elastic tube fixing ring 223 of the elastic cap 220 is seated on the separation cap pressing protrusion 218c. When the elastic cap 220 is covered on the outside of the fixing pipe 211, the elastic pipe fixing ring 223 is disposed on the side of the fixing pipe connector 215. In this state, when the elastic cap fixing cap 218 is inserted into the outside of the elastic cap 220 and inserted into the outside of the fixed pipe connector 215, the elastic pipe fixing ring 223 is in contact with the separating cap pressure jaw 218c. Is fixed.

A gas inlet pipe insertion groove 218d in which the gas inlet pipe 240 is accommodated is formed in the upper one side of the elastic cap fixing cap 218 to a predetermined depth.

The upper end of the elastic cap fixing cap 218 is provided with a plurality of fitting protrusions 218e protruding upward at predetermined angular intervals. The fitting protrusion 218e is fitted into the protrusion insertion hole 216b of the submerging pipe support pipe 216 when the elastic cap fixing cap 218 is fitted into the fixed pipe connector 215. Accordingly, the position of the elastic cap fixing cap 218 is fixed to the submerged pipe support pipe 216.

The separation cap connecting member 219 is fixedly coupled to the submerged tube support pipe 216, and is detachably coupled to the separation cap 230. Separation cap connection member 219 is formed through a surgical tool insertion hole (219a) therein. A plurality of support pipe coupling hooks 219b are provided below the separating cap connecting member 219 as shown in FIG. 8. The support pipe coupling hook (219b) is hooked to the hook fitting hole (216c) of the immersion pipe support pipe 216 so that the separation cap connection member 219 and the immersion pipe support pipe 216 are firmly fixed.

The gas leakage blocking member 217 is fixed together between the two by the coupling of the separation cap connection member 219 and the submerged pipe support pipe 216.

Separation cap connecting member 219 is formed with a coupling hook fitting groove (219c) at a predetermined angle on the upper outer wall surface. In addition, the hook fitting rail (219d) is formed in a helical direction to be connected to the coupling hook fitting groove (219c).

The coupling hook fitting groove (219c) is fitted with a coupling hook (231a) of the lower coupling ring (231) of the separation cap (230) detachably. When the user rotates the lower coupling ring 231 while the coupling hook 231a is inserted into the coupling hook fitting groove 219c, the coupling hook 231a is moved along the hook fitting rail 219d, and then the position is restricted.

By the coupling structure of the coupling hook (231a) and the coupling hook fitting groove (219c), as shown in Fig. 6, the elastic support portion 200 is fitted with the elastic cap 220, the submerged tube 210 and the separation cap 230 Can be separated by

Here, the second diameter (R2) of the lower surgical member moving hole (235d) of the separation cap (230) is remarkable compared to the first diameter (R1) of the surgical tool insertion hole (219a) formed in the separation cap connecting member 219 Is formed small. Accordingly, when the operator wants to remove tissue from the surgical site while the separation cap 230 is coupled to the separation cap connecting member 219, the tissue is removed through the second diameter R2 of the lower surgical member moving hole 235d. It must be removed.

Therefore, when the size of the tissue is larger than the second diameter R2, there may be difficulties in extraction. In this case, the operator separates the separation cap 230 from the separation cap connection member 219. When the separation cap 230 is separated, the operator can remove the tissue through the surgical tool insertion hole 219a having a relatively large diameter, so that the extraction can be facilitated.

The elastic cap 220 is coupled to the outside of the immersion tube 210 to elastically change its length. The elastic cap 220 is formed of an elastic material and includes an elastic tube 221 coupled to the outside of the submerged tube 210 and an elastic tube fixing ring 223 coupled to the upper end of the elastic tube 221.

The elastic tube 221 is formed of a material having elasticity such as rubber and silicone. The elastic tube 221 is formed to correspond to the length of the immersion tube 210 having a minimum length in which the moving tube 213 is completely inserted into the fixed tube 211 in the contracted initial state. Elastic wrinkles 221b are formed at regular intervals on the surface of the elastic tube 221 so that the elastic tube 221 may be elastically elongated in length.

The elastic tube fixing ring 223 is coupled to the upper end of the elastic tube 221 and is accommodated in the elastic cap fixing cap 218. Since the elastic tube fixing ring 223 is accommodated in the elastic cap fixing cap 218, when the user presses the separation cap 230 toward the main body 110, the pressing force is transmitted to the elastic tube 221 and the elastic tube 221 Is elongated.

The separation cap 230 is coupled to the immersion tube 210 so that the elastic length change of the elastic cap 220 is transmitted to the immersion tube 210. In addition, the separation cap 230 is separated from the separation cap connecting member 219 of the immersion tube 210 according to the size of the tissue to be extracted when tissue extraction is required during the operation to facilitate tissue extraction.

The separating cap 230 includes a lower coupling ring 231 detachably coupled to the separating cap connection member 219, a lower coupling ring 231, and an upper packing member 233 seated on the lower coupling ring 231 And, the lower gas backflow preventing member 235 seated on the upper packing member 233, the upper gas backflow preventing member 237 coupled to the lower gas backflow preventing member 235, the lower coupling ring 231, and It is coupled and includes an upper coupling ring 239 for accommodating an upper packing member 233, a lower gas backflow prevention member 235, and an upper gas backflow prevention member 237 therein.

The lower coupling ring 231 is detachably coupled to the separating cap connecting member 219 so that the separating cap 230 is coupled to or separated from the submerged tube 210. The lower coupling ring 231 is provided with a plurality of coupling hooks 231a protruding inwardly on a lower inner wall surface. The coupling hook (231a) is inserted into the coupling hook fitting groove (219c) of the separating cap connection member (219) and the position is fixed.

The lower coupling ring 231 is formed with a through hole (231b) through which the penetrating needle 120 or the surgical tool is moved.

The upper packing member 233 is seated inside the lower coupling ring 231 to fill the space between the upper coupling ring 239 and the lower coupling ring 231, and the lower gas backflow preventing member 235 and the upper gas backflow preventing member 237 ) To be fixed.

The lower gas backflow prevention member 235 and the upper gas backflow prevention member 237 are provided between the upper coupling ring 239 and the lower coupling ring 231 so that the gas flowing backward through the through hole 231b is further Block it from moving to the upper part.

The lower gas backflow preventing member 235 includes an outer fitting ring 235a loaded on the upper packing member 233, an inner fitting ring 235b coupled to the outer fitting ring 235a, and an inner fitting ring 235b It includes a hemispherical rubber film (235c) of a hemispherical shape protruding from the bottom of the.

The hemispherical rubber film 235c is disposed in the through hole 231b of the lower coupling ring 231 through the upper packing member 233. In the center region of the hemispherical rubber membrane 235c, a permeation needle 120 or a lower surgical member moving hole 235d through which the surgical member is moved is formed.

It is formed with a second diameter R2 having the minimum size of the lower surgical member moving hole 235d. Since the hemispherical rubber film 235c is formed of rubber having elasticity, it is elastically elongated when the penetrating needle 120 or the surgical tool is inserted into the lower surgical member moving hole 235d. Since the lower surgical member moving hole (235d) is stretched to fit the outer diameter of the permeating needle 120 or the lower surgical member moving hole (235d), there is no free space between the permeating needle 120 or the surgical tool and the lower surgical member moving hole (235d). It prevents the gas flowing back from the immersion pipe 210 from moving upward.

The hemispherical rubber film 235c is radially formed with a cut groove 235e. The incision groove 235e allows the hemispherical rubber film 235c to be folded upward and moved.

The upper gas backflow preventing member 237 is disposed to overlap with the lower gas backflow preventing member 235 to double-block the gas from flowing backward. The upper gas backflow preventing member 237 includes a support ring 237a seated on the inner fitting ring 235b of the lower gas backflow preventing member 235, and a plurality of formed extending downward along the circumferential direction of the support ring 237a. It includes an elastic skirt (237b).

The support ring 237a is seated on the inner fitting ring 235b, and an upper surgical member moving hole 237c is formed therein. At this time, a plurality of lower fitting protrusions 237d protruding toward the lower portion are provided on the lower surface of the support ring 237a. The lower fitting protrusion 237d is inserted into the lower fitting protrusion coupling hole 235f formed in the inner fitting ring 235b so that the position of the upper gas backflow preventing member 237 is fixed.

The plurality of elastic skirts 237b are formed in a trapezoidal shape whose width becomes narrower toward the bottom.

When the gas does not flow back from the bottom, the elastic skirt 237b is stacked on the hemispherical rubber film 235c as shown in FIGS. 9A and 10A and is disposed toward the bottom. .

When the length of the elastic skirt 237b is disposed in the horizontal direction, it is formed larger than the radius of the upper surgical tool insertion hole 239a. Accordingly, when the plurality of elastic skirts 237b are disposed horizontally, they overlap each other in the middle region.

On the other hand, when the gas (G) flows backward from the bottom, the hemispherical rubber film 235c is pressed upward, and a plurality of elastic skirts 237b are pushed upward as shown in FIG. 10B. .

A plurality of elastic skirts (237b) pushed up in the upward direction are collected toward the center of the upper surgical member moving hole (237c) as shown in (b) of FIG. 9 to narrow or block the upper surgical member moving hole (237c). do. Thereby, the gas flowing back from the bottom to the top is blocked from leaking through the upper surgical member moving hole (237c).

That is, the trocar assembly 1 of the present invention first blocks gas leakage in the gas leakage blocking member 217 provided in the immersion pipe 210 of the elastic support part 200, and is provided in the separating cap 230. The lower gas backflow prevention member 235 and the upper gas backflow prevention member 237 secondly block gas leakage. This has the advantage of being able to stably block gas backflow.

The upper coupling ring 239 is fixedly coupled to the lower coupling ring 231. The upper coupling ring 239 and the lower coupling ring 231 have a structure in which male and female are coupled to each other on an inner peripheral surface. An upper surgical tool insertion hole (239a) is formed in the center of the upper coupling ring (239).

A main body insertion tube 239b protruding a predetermined length toward the upper portion is formed around the upper surgical tool insertion hole 239a. The main body insertion pipe 239b is accommodated in the support pipe 112 of the main body 110 when the upper coupling ring 239 is coupled to the main body 110.

An end of the main body insertion pipe 239b is provided with a hook engaging jaw 239c extending a predetermined length outward in the radial direction. When the upper coupling ring 239 is coupled to the main body 110 as shown in (b) of FIG. 11, the hooking hook 113b of the detachable operation bar 113 is hooked. .

A support protrusion fitting hum (239d) is formed in the hook engaging jaw (239c) in a facing direction. When the support protrusion fitting hum (239d) is coupled to the upper coupling ring 239 to the main body 110, the support protrusion 112a formed inside the support pipe 112 of the main body 110 is fitted to the main body 110 and elasticity It serves to guide the coupling direction of the support portion 200.

The gas inlet pipe 240 is coupled to the side of the fixed pipe connection pipe 215 to supply gas to the inside. A gas valve 241 may be provided inside the gas inlet pipe 240 to regulate whether gas is supplied.

A process of using the trocar assembly 1 according to the present invention having such a configuration will be described with reference to FIGS. 3 to 13.

First, as shown in FIG. 3, a main body 110 and an elastic support part 200 are prepared. In addition, as shown in FIG. 4, the penetration needle 120 is inserted into the body 110 through the penetration/detachment hole 111a formed in the handle 111 of the body 110. Through the body 110, a certain length (L) of the penetrating needle 120 is exposed to the outside.

The user inserts the penetrant 120 into the immersion tube 210 of the elastic support part 200.

As shown in (a) of FIG. 11, in the initial state, the length W1 of the elastic support part 200 is provided at the tip of the fixed pipe 211 with a portion of the moving pipe 213 shortly exposed. In this state, as shown in (b) of FIG. 6, the user presses the separation cap 230 toward the main body 110, inserts the upper coupling ring 239 into the support pipe 112, and inserts the main body insertion pipe. Hook the hooking hook (113b) to the hook hook (239c) of (239b).

When the separating cap 230 is pressed toward the main body 110, the elastic tube 221 is extended by an elastic force, and the fixed tube 211 and the moving tube 213 move relative to each other and increase in length.

In this state, the user, i.e., the medical staff, presses the permeate 120 toward the patient's abdomen and inserts the permeate 120 into the abdomen B. At this time, gas is inserted into the patient's abdomen, so that the organ and the abdominal wall are separated.

When the penetrating needle 120 is inserted into a desired position, the user presses the pressing button 113a of the detachable operation bar 113. Thereby, as shown in (a) of FIG. 12, the pressing button 113a of the detachable operation bar 113 is moved downward, the locking hook 113b moves upward, and the binding force for the upper coupling ring 239 is It is released.

Accordingly, the elastic support 200 is momentarily compressed by the elastic force of the elastic cap 220 to be restored to its initial length. The fixing pipe 211 is also moved by the compressive force of the elastic cap 220.

As the elastic cap 220 is compressed, the elastic cap fixing cap 218 is supported in contact with the skin (A), and accordingly, the position of the trocar assembly 1 is fixed.

Here, the trocar assembly 1 of the present invention has a length L of the trocar 120 that is long enough to fit a patient with a fat body, so it can be used interchangeably with patients of various body types. That is, from a patient having a short length W3 inserted into the abdomen as shown in (a) of FIG. 12 to a patient having a long length W4 inserted into the abdomen as shown in FIG. 12 (b) One length of trocar assembly (1) can be used interchangeably. Accordingly, it is possible to solve the hassle of conventional trocars that have been used by replacing trocars of different lengths according to the patient's body shape.

On the other hand, for the operation, the user may perform the operation by separating the body part 100 from the elastic support part 200 and inserting a surgical tool into the elastic support part 200.

In this process, when a tissue larger in size than the upper surgical tool insertion hole 239a of the separating cap 230 needs to be removed, the user may use the body part from the elastic support part 200 as shown in FIG. 13(a). 100).

In addition, the separation cap 230 may be separated from the immersion tube 210 as shown in FIGS. 6 and 13B. That is, the lower coupling ring 231 may be separated from the separation cap connection member 219 of the submerged pipe 210. Accordingly, the tissue can be smoothly removed through the surgical tool insertion hole 219a having a relatively larger diameter than the upper surgical tool insertion hole 239a.

As described above, the trocar assembly according to the present invention can be used interchangeably with patients of various body types by using a single length of dip. Accordingly, it is possible to solve the conventional inconvenience of replacing and using trocars of different lengths for patients of different body types.

In addition, in the trocar assembly according to the present invention, the user manipulates the detachable operation bar using the elastic force of the elastic cap so that the elastic support part automatically adheres to the patient's skin. Accordingly, the inconvenience of manually moving the skin fixing member during the laparoscopic procedure can be eliminated.

In addition, the trocar assembly according to the present invention has the convenience that the separation cap is detachably coupled to the immersion tube, so that it can be separated and used according to the size of the tissue to be stored during surgery.

In addition, the trocar assembly according to the present invention has a triple structure of a gas leakage blocking member, a lower gas backflow prevention member, and an upper gas backflow prevention member to prevent gas leakage to prevent the gas injected into the patient's abdominal cavity from leaking to the outside. It has the advantage of being able to block stably.

The embodiments of the trocar assembly of the present invention described above are merely exemplary, and those of ordinary skill in the art to which the present invention belongs are well aware that various modifications and other equivalent embodiments are possible. I will be able to. Therefore, it will be appreciated that the present invention is not limited to the form mentioned in the detailed description above. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. In addition, the present invention is to be understood as including the spirit of the present invention as defined by the appended claims and all modifications, equivalents and substitutes within the scope thereof.

1: trocar assembly 100: main body
110: main body 111: handle
111a: penetration and removal of the hole 112: support pipe
112a: support protrusion 113: detachable operation bar
113a: pressing button 113b: locking hook
113e: hook support shaft 115: needle guide hole
117: interlocking member 120: penetration
121: needle tip 123: locking end
200: elastic support 210: submerged pipe
211: fixed pipe 211a: moving pipe insertion hole
211b: ring insertion hole 212: lower packing member
213: moving pipe 213a: exposed hole inside needle
213b: hook locking groove 213c: locking end
214: fixing ring 215: fixing pipe connector
216: submerged pipe support pipe 216a: stepped
216b: protrusion insertion hole 216c: hook insertion hole
217: gas leakage blocking member 217a: impermeable moving incision
217b: seating ring 217c: triangular pyramid pattern
218: elastic cap fixing cap 218a: lower fitting hole
218c: separation cap pressure jaw 218d: gas inlet pipe insertion groove
218e: fitting protrusion 219: separation cap connecting member
219a: surgical tool insertion hole 219b: support pipe coupling hook
219c: coupling hook fitting groove 219d: hook fitting rail
220: elastic cap 221: elastic tube
221a: needle external exposure hole 221b: elastic wrinkle
223: elastic pipe fixing ring 230: separation cap
231: lower coupling ring 231a: coupling hook
231b: through hole 233: upper packing member
235: lower gas backflow prevention member 235a: outer fitting ring
235b: inner fitting ring 235c: hemispherical rubber membrane
235d: lower surgical member moving hole 235e: incision groove
235f: lower fitting protrusion coupling hole 237: upper gas backflow prevention member
237a: support ring 237b: elastic skirt
237d: lower fitting protrusion 239: upper coupling ring
239a: upper surgical tool insertion hole 239b: main body insertion tube
239c: hook hook 239d: support protrusion fitting groove
240: gas inlet pipe 241: gas inlet valve

Claims (4)

A body part 100 having a body 110 that is inserted into the patient's abdomen and a body 110 that is coupled to the rear end of the implantation needle 120;
The penetration needle 120 is inserted through the inside and is provided to elastically extend and contract in the length direction of the penetration needle 120, and when the penetration needle 120 is inserted into the abdomen of the patient, the length is elastically increased. It contracts and includes an elastic support part 200 that is in close contact with the patient's skin,
The elastic support part 200,
A hard material immersion tube 210 that accommodates the permeation needle 120 and has a variable length therein;
An elastic cap 220 that accommodates the immersion tube 210 inside, the tip is fixedly coupled to the immersion tube 210 and is made of an elastic material;
Separation cap 230 is detachably coupled to the upper portion of the immersion tube 210 and is detachably coupled to the body 110 when the length of the elastic cap 220 and the immersion tube 210 is lengthened. Includes,
The immersion pipe 210,
A fixed pipe 211;
A moving tube 213 movably coupled to the fixing tube 211 and having a tip fixed to the tip of the elastic cap 220;
An immersion pipe support pipe 216 coupled to an upper portion of the fixed pipe 211 and to which a gas inlet pipe 240 for introducing gas into the fixed pipe 211 is coupled to an outer periphery;
A gas that is seated on the step 216a of the submerged pipe support pipe 216 and prevents the gas flowing into the fixing pipe 211 through the gas inlet pipe 240 from flowing backward in the direction of the separation cap 230 A leakage blocking member 217;
A trocar assembly, characterized in that it comprises a separation cap connecting member (219) fixedly coupled to the submerged pipe support pipe (216) and coupled to the separation cap (230).
The method of claim 1,
The separation cap 230,
A lower coupling ring 231 detachably coupled to the separating cap connection member 219;
A lower gas backflow prevention member 235 coupled to the upper surface of the lower coupling ring 231 to allow the movement of the permeate 120 and prevent the upward movement of the gas;
An upper gas backflow preventing member 237 which is coupled to be superimposed on an upper portion of the lower gas backflow preventing member 235 to allow movement of the penetrating needle 120 and prevent upward movement of gas;
It is fixedly coupled to the lower coupling ring 231, and includes an upper coupling ring 239 detachably coupled to the body 110 when the length of the elastic cap 220 and the immersion tube 210 is elongated, and ,
The outer periphery of the lower coupling ring 231 is provided with a plurality of coupling hooks 231a protruding downward at a predetermined angular interval along the radial direction,
The upper outer periphery of the separating cap connecting member 219 is formed in a spiral shape so as to be connected to the coupling hook fitting groove 219c into which the coupling hook 231a is fitted, and the coupling hook fitting groove 219c. Trocar assembly, characterized in that the hook fitting rail (219d) for fixing the position of 231a) is provided.
The method of claim 2,
The gas leakage blocking member 217 is formed in a bag shape formed of an elastic material extending toward the bottom,
The gas leakage blocking member 217 is cut in a "+" shape, and when the penetration needle 120 is moved, a penetration needle moving cutting line 217 that opens corresponding to the diameter of the penetration needle 120 is provided. Car assembly.
The method of claim 3,
The lower gas backflow preventing member 235 is formed to protrude toward the lower portion and is provided with a hemispherical rubber film 235c having a lower surgical member movable hole 235d penetrating through the center region,
A plurality of cut grooves 235e are formed radially in the hemispherical rubber film 235c,
The upper gas backflow prevention member 237 includes a plurality of elastic skirts 237b disposed along the circumferential direction of the hemispherical rubber film 235c,
When the gas flows back from the bottom, the hemispherical rubber film 235c moves upward and presses the plurality of elastic skirts 237b, and the plurality of elastic skirts 237b gather in the center direction to move the lower surgical member. Trocar assembly, characterized in that blocking the ball (235d).

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