KR100851844B1 - Trocar - Google Patents

Abstract

A filter embedded trocar is provided to improve efficiency of a space during surgery by implementing a compact structure while performing an air discharging operation. A filter embedded trocar includes an insertion tube(110), a body(120), a tube(10), a pin(20), and a filter unit(140). The insertion tube is inserted into abdomen of a patient. The body is connected with the insertion tube and includes a valve(150). The valve draws in air into the abdomen of a patient and discharges the air to the outside of the abdomen of a patient. The tube includes a cap(130). The cap is coupled to the body. The pin is inserted in the tube and includes a sharp portion(210) for being inserted into the abdomen of a patient. The filter unit filters harm air during inflow and outflow of the air from the abdomen of a patient.

Description

Filter built-in trocar with stability of surgical operation {TROCAR}

The present invention relates to a laparoscopic trocar (TROCAR) that is able to perform a laparoscopic surgery by opening a small hole without opening the stomach of the patient,

More specifically, a filter is provided to filter the discharge of the injected air during the surgery or the finishing stage to be discharged to the outside, and such a filter is provided inside the trocar to utilize the space for the surgical operation while being compact in structure. To maximize

In addition, the present invention relates to a filter-mounted trocar equipped with various necessary structures to ensure the stability of the surgical operation.

Unlike conventional laparotomy, laparoscopic surgery has recently been developed to incise the incision of the skin and the number of procedures using it is increasing day by day.

Such laparoscopic surgery is performed by using a trocar through a trocar inserted through a plurality of small holes in the abdomen of the patient and inserting surgical instruments such as an endoscope into the surgical site of the abdominal cavity, and then performing an abdominal surgery through an endoscope. As a method of operating while observing a site, gallbladder resection, biliary stone removal, hepatic stone removal, appendectomy, general surgery and the like are widely used.

Trocar used in laparoscopic surgery is a trocar sleeve that is inserted into the surgical site and provides a working space for various surgical tools, and a trocar needle inserted into the trocar to puncture the surgical site. It is composed.

That is, when the surgical site is punctured by using the needle in the state of being fastened to the trocar, the inserted needle is removed from the trocar, thereby providing a working space of the surgical tool in the state where the trocar is inserted into the skin.

In this case, in order to secure the surgical field in the abdominal surgery using an endoscope, carbon dioxide gas is injected through a valve provided on one side of the trocar to maintain ups and downs.

The excellent trocar condition to improve the stability of the surgical operation should be provided with a valve structure that prevents external air from entering the inside of the surgical instrument and prevents internal carbon gas injected into the abdomen from leaking to the outside.

In addition, in discharging the internal gas generated during the operation or the gas injected into the outside after the completion of the operation, it is to be provided with a filter structure that can filter the harmful gas from the trocar without directly discharging the harmful gas to the outside. .

In addition, a lot of requirements are required in terms of excellent trocar condition, but in the present invention, the structure required at the rear end of the above-described structure, that is, the gas contained in the abdomen of the patient during the operation or at the completion of the operation, is not harmful to those in the operating room And a trocar equipped with a structure for effectively discharging in operation.

First of all, for the safety of operating room workers, it is necessary to develop a trocar structure that allows the filter to pass through the abdomen without releasing harmful gases.

A trocar structure with a filter is disclosed in US Pat. No. 5,722,962 (1998.03.03) and in German patent DE 199,18,847 (2000.12.28).

However, the above-mentioned prior arts have a filter that is separately provided to the trocar external structure, and the trocar volume itself is large due to the filter structure attached to the outside.

In the surgical operation, due to the filter structure provided outside the trocar, the working radius is limited and there is a problem in that the precision of the surgical operation cannot be expected.

Next, a trocar of a structure in which gas is easily injected into the affected part in a single trocar and the internal gas is discharged out is not disclosed at all.

More specifically, the internal gas generated during the surgical operation among the above-mentioned contents refers to a gas generated when the tissue or blood vessels are removed through the electrocautery and the bleeding site is bleeded accordingly. That is, toxic gas generated when burning tissues or blood vessels. The generated gas should be discharged to the outside at any time even during surgery to secure the surgical field of view, the discharged gas is of course harmful to the human body.

As a result, in laparoscopic surgery, a number of trocars are inserted into the abdomen of the patient, and in some trocars, carbon dioxide is injected to maintain ups and downs in order to secure a surgical field of view. It is responsible for discharging the gas outside to secure visibility.

In other words, in a single trocar, gas injection can only perform a limited function of injection and gas discharge.

If you need to insert as many trocars as you need for gas injection and discharge into your abdomen, and you need to discharge the internal gas through the trocar connected to the gas injection device, you should disconnect the connected gas injection device. The separate connection for the discharge must be done again, there is a problem that the last effective operation is not made.

The present invention for solving the above problems is provided with a filter structure necessary for discharging the harmful gas injected into the human body to the gas generated inside the abdomen during the operation to the outside to increase the sophistication of the surgical operation The first objective is to provide a trocar with a more compact structure.

In addition, it is an object to provide a trocar with a simple structure and a stable mounting of the filter, and excellent filter performance in mounting the filter inside the trocar.

In addition, by providing a valve having a separate flow path for gas injection and discharge in the trocar of a compact structure to provide a trocar that can easily inject or discharge gas as needed during the operation operation to increase the efficiency of the operation operation It aims to do it.

It is also an object of the present invention to provide a trocar with a separate stabilizer so that the trocar inserted into the abdomen does not fall out at an undesired moment for stable surgical operation.

In order to solve the above problems, the filter-embedded trocar according to the present invention has an insertion tube inserted into the patient's abdomen and a body having a valve body communicating with the insertion tube and provided with an air inlet and discharge to the patient's abdomen, and fastening with the body. The cap is made of a bushing and inserted into the bushing and the tip is made of a penetrating needle formed for perforation of the affected part, the body is characterized in that the built-in filter for filtering harmful air during the air inflow into the patient's abdomen.

In addition, the filter unit according to the present invention comprises a support portion for intermittently partitioning the space communicated from the insertion pipe to the valve body, and a filter supported by the support portion while covering the opening portion due to the intermittent section of the support portion. It is a technical feature.

In addition, the valve body according to the present invention is characterized in that the flow path for air inlet and outlet is separated to enable the air inlet and outlet within a single trocar.

In addition, the insertion tube according to the present invention is characterized in that the separation prevention means for preventing the separation of the bushing after the patient abdomen is provided.

As described above, according to the present invention, a filter is provided in the trocar structure and exhibits a filtering function.

While performing the desired function of releasing harmful air through filtering, it is possible to use the space efficiently during the surgical operation due to the apparently compact structure. Furthermore, by maximizing the utilization of the space, precise arm movement is possible without disturbing the operation. The effect is that it can be stabilized.

In particular, the filter is not mounted on the outside of the trocar, but can be formed as large as possible by the built-in trocar, but does not affect the appearance of the trocar. .

In addition, it is equipped with a valve having a separate flow path for gas injection and discharge, so that the gas can be easily injected or discharged as needed during the operation operation to increase the efficiency of the operation, and when the trocar inserted into the abdomen is unwanted Equipped with a separate stabilizer to prevent falling out

Eventually, the stability of the operation can be secured.

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

Trocar (T) according to the present invention is inserted into the trocar sleeve (Trocar Sleeve) 10 to provide a working space of various surgical tools after the configuration is inserted into the surgical site as in the conventional trocar, It consists of a trocar needle (20) to puncture the surgical site.

1 to 3, first, the penetrating needle 20 has a structure that is commonly used, and a tip portion 210 is formed at the end to puncture the abdomen, and a head portion for fastening with a bushing to be described later on the opposite side. 220 is provided.

Next, the bushing 10 includes an insertion tube 110 inserted into the abdomen of the patient, a body 120 in communication with the insertion tube and provided with a valve body 150 for introducing and discharging air into the abdomen of the patient, And it is made of a cap 130 is fastened to the body,

As shown in the figure, the insertion tube 110 and the body 120 is also configured in a manner that is separated and coupled to each part, but the insertion tube and the body may be formed integrally.

In particular, in the bushing body 120 of the present invention, as shown in Figure 3, the filter unit 140 is embedded in the body. That is, the filter part 140 has a support part 141 for intermittently partitioning the space communicated from the insertion pipe 110 to the valve body 150, protrudes from the bottom of the body, and intermittently spaces the space. The filter 142 is positioned to cover the opening 143 that is open without being blocked by the support 141 partitioning into the opening 143.

More specifically, the bottom of the body 120 is formed with a hole in communication with the insertion tube 110, the support 141 is formed to protrude to the bottom of the body along the circumference of the hole. Of course, the support 141 is formed intermittently along the circumference of the hole so that the opening 143 for gas flow in and out is formed, and some of the support is formed for stable support of the filter to be inserted thereafter. It is preferable that the other supporting portion is formed to be drawn inward from the formed circumferential line.

Next, the filter 142 is inserted along the inner surface of the protruding support 141, and the position of the filter is fixed due to the support formed by drawing inwardly from the other support.

In addition, in connection with fixing the filter, it is possible to bond the filter and the support part more stably by using an adhesive tape, if necessary. That is, the double-sided tape is attached to the filter surface in contact with the support to adhere the support to the filter. In this case, in order to discharge the gas through filtering, the double-sided adhesive tape is preferably formed in an intermittent shape in accordance with the opening shape.

Filter fixing method for the support of the present invention can be considered in various ways in addition to the method shown in Figure 3, another embodiment is shown in FIG.

Referring to FIG. 4A, the support part 141 protrudes from the bottom of the body 120 along the circumference of the hole, and an insertion groove 141 a is formed at the side of the support part 141 to insert the filter 142. Both side portions of the side portion 142 are inserted into the insertion groove 141a so that the filter 142 is seated on the body 120 and is firmly fixed.

4B, the support part 141 shown in FIG. 4B is also protruded from the bottom of the body, and intermittently controls a space communicating from the insertion pipe 110 to the valve body 150 for air inflow and outflow. By partitioning to form an open portion 143,

As shown in FIG. 4A, the filter 142 inserted into the support part 141 is not a piece but a cylindrical shape. The filter 142 is also formed in a cylindrical shape.

That is, the insertion groove 141a is not formed on the side of the support portion, but is formed by being drilled in a predetermined depth from the upper surface of the support portion 141, and the filter portion is formed by inserting a cylindrical filter into the formed insertion groove 141a.

Referring back to FIG. 1, the body 120 according to the present invention is fastened to the cap 130 to maintain a sealed state, and the penetrating needle 20 is inserted into the top of the cap or a surgical tool. Insertion passage 131 is formed, the insertion passage 131 is configured to communicate the cap 130 and the insertion tube 110 when the cap 130 and the body 120 is fastened. Of course, at a predetermined position of the insertion path communicating with the insertion tube 110 as in a conventional trocar, a valve (not shown) is provided to prevent external air from flowing into the inside when the surgical tool is inserted.

Next, looking at the valve body 150, the valve body 150 is provided on the side of the body 120 for the air inlet and outlet to the patient's abdomen, the flow path for the air inlet and outlet unlike the conventional trocar It is.

That is, the valve body 150 may include a first flow path 151a for introducing air, a second flow path 151b for discharging air, and a body 120 and the first and second flow paths 151a and 151b. The handle 152 is fastened to the communication unit 151c and determines whether to open or close each of the flow paths 151a and 151b with respect to the body.

As shown in Figure 1 and 5, the handle body 152a is formed with three through holes 153,

For convenience of description, the direction in which the first channel 151a extends to the right side, the direction in which the second channel 151b extends to the left side, and the part connected to the body 120 is set to the rear side and the opposite side to the front side. To explain,

The through hole 153 is formed at a right position (see FIG. 5A), a right through hole 153a communicating with the first flow passage 151a, a left through hole 153b communicating with the second flow passage 151b, and formed at the front side. It consists of a connection hole (153c).

Therefore, when the valve is not opened by the body 120, the through hole 153 is positioned as shown in FIGS. 1 and 5A,

When the first channel 151a and the carbon dioxide gas injector are connected to inject gas, the handle 152 is turned to the right to inject carbon dioxide into the abdomen. The position of the through hole 153 is as shown in FIG. 5B.

Next, when it is difficult to secure a field of vision during surgery, when the gas filled in the abdomen needs to be discharged, the handle 152 is turned to the left to stop the injection of carbon dioxide, and the abdominal gas is discharged through the second flow path 151b.

In this case, as described above, the abdominal gas comes up along the insertion pipe 110 to be discharged through the second passage 151b through the body 120, and when passing through the body 120 to the body 120. Through the built-in filter unit 140 is toxic gas is filtered and discharged to the outside.

Next, after the insertion tube is inserted into the abdomen below the insertion tube 110, the separation preventing means 160 is provided so as not to be separated by an external force.

That is, as shown in Figures 1 and 2, the separation preventing means 160 is inserted into the groove formed on the outer peripheral surface of the insertion tube is mounted on the insertion tube 161 and the shape formed on one side of the mounting portion extending out The locking portion 162 is composed of.

The catching portion 162 is formed so as to be stretched out as the upper portion of the inverted solid shape, the material is preferably soft, such as silicon.

Therefore, due to the soft characteristics such as silicone, the locking portion 162 is lifted by the pushing force when the insertion tube 110 is inserted into the abdomen, and is easily inserted into the abdomen while being attached to the insertion tube.

Once inserted, the insertion tube is not easily pulled out by an external force due to the upside-down latching portion 162.

Next, when it is necessary to remove the trocar after the completion of the surgical operation, when the operator pulls the trocar with the force, the soft locking part 162, which used to be in the upward shape, is turned upside down so that the insertion tube 110 is removed from the abdomen. do.

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

1 is an exploded perspective view showing a trocar according to the present invention.

Figure 2 is a perspective view showing a coupled state of FIG.

Figure 3 is a partially enlarged view showing the trocar bushing according to the present invention.

Figure 4 is a partially enlarged view showing another embodiment of the filter unit according to the present invention.

Fig. 5 is a sectional view showing the through hole of the valve body according to the present invention.

* Description of the symbols for the main parts of the drawings *

10: bushing

110: insertion tube 120: body 130: cap 140: filter portion

150: valve body 160: separation prevention means

20: penetrating

210: tentative 220: head

Claims (5)

An insertion tube inserted into the patient's abdomen, A body in communication with the insertion tube and having a valve body for introducing and discharging air into the abdomen of the patient, and Bushing made of a cap coupled to the body; And Inserted into the bushing and the tip is formed in the tip for puncture the affected area; The body is characterized in that the built-in filter unit for filtering harmful air when the air flow into the patient abdomen, The filter unit A support portion for intermittently dividing a space communicating from the insertion pipe to the valve body; The trocar with a built-in filter to ensure the stability of the surgical operation, characterized in that made of a filter supported by the support while covering the opening due to the intermittent section of the support. delete The filter-embedded trocar according to claim 1, wherein the valve body has a separate flow path for inflow and outflow of air, thereby securing the stability of the surgical operation to enable the inflow and outflow of the air within a single trocar. The method of claim 3, wherein the valve body The first flow path for air inflow, A second flow path for air discharge, and A trocar with a built-in filter to ensure the stability of the surgical operation, characterized in that the handle is fastened to the communication portion of the body and the first and second flow paths to determine the opening and closing of each flow path to the body. According to claim 1, wherein the insertion tube A trocar with built-in filter to ensure the stability of the surgical operation, characterized in that the separation prevention means for preventing the separation of the trocar after insertion of the patient abdomen.

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