WO2011162491A2

WO2011162491A2 - Trocar for single port surgery

Info

Publication number: WO2011162491A2
Application number: PCT/KR2011/004071
Authority: WO
Inventors: 김송이; 김사임; 김수정
Original assignee: 주식회사 세종메디칼
Priority date: 2010-06-21
Filing date: 2011-06-03
Publication date: 2011-12-29
Also published as: WO2011162491A3; KR20110138696A; KR101109675B1

Abstract

The present invention relates to a trocar for single port surgery which is installed at a hole incised in a patient's abdomen through which a laparoscopic surgical instrument is inserted, wherein the trocar comprises: an upper body disposed on the outside of the patient's abdomen, and including an insert hole in which the laparoscopic surgical instrument is inserted; a tubular body formed extending from the bottom of the upper body, having a cross-sectional area that is less than that of the bottom of the upper body, and which is formed of a ductile material so as to closely contact the inner periphery of the hole incised into the abdomen; a lower body formed extending from the bottom of the tubular body, inserted into the hole incised into the abdomen, and positioned inside the patient's abdomen, whereupon the lower body expands to have a cross-sectional area greater than that of the tubular body; and a rigid tubular member provided on the inner periphery of the tubular body, formed of a rigid material so as to reduce friction that can occur when the laparoscopic surgical instrument is inserted into the human body, and which has a bottom portion corresponding to the bottom of the tubular body and increases in cross-sectional area when the laparoscopic surgical instrument is inserted therein.

Description

Single Port Surgical Trocar

The present invention relates to a trocar for single port surgery, and more particularly, to performing laparoscopic surgery with a single port, it is easy to insert and withdraw a plurality of laparoscopic surgical instruments, and from a hole drilled in the abdomen of a patient with a trocar installed. The present invention relates to a single-port surgical trocar that can easily operate on tissues present in small medial angles.

Medically, surgery means repairing a disease by cutting, slitting, or manipulating skin, mucous membranes, or other tissues with an instrument. Laparoscopic surgery during surgery is a method of drilling a small hole in the abdomen of the patient and observing the inside of the abdominal cavity through the hole. have.

In order to perform such laparoscopic surgery, at least three surgical instruments are required. In other words, an endoscope for observing the inside of the abdominal cavity during surgery, a forceps for holding the tissue, and a surgical instrument for manipulating a tissue such as a cutter or an ultrasonic generator for treatment. To do this.

In addition, in order to safely insert or withdraw such laparoscopic surgical instruments through the hole drilled in the abdomen of the patient, a trocar is generally installed in the hole drilled in the abdomen of the patient.

In this case, in order to minimize the scars that may occur after surgery on the abdomen of the patient, there is a case in which a single port is to be operated by installing only one trocar unlike the conventional installation of a plurality of trocars.

However, when only one trocar is installed and a single port is operated, not only a plurality of laparoscopic surgical instruments as described above are easy to insert and withdraw, but also the outer shell is formed in a hole drilled in the abdomen of the trocar. It is difficult to operate on tissues present in small areas.

Technical problem of the present invention, in performing a laparoscopic surgery with a single port, it is easy to insert and withdraw a large number of laparoscopic surgical instruments, for tissues present in the small outer shell in the hole drilled in the abdomen of the patient with a trocar installed It is to provide a single-port surgical trocar that can be easily operated.

The technical problem to be achieved by the present invention is not limited to the technical problem mentioned above, and other technical problems not mentioned above may be clearly understood by those skilled in the art from the following description. There will be.

The technical problem is a trocar provided in a hole drilled in the abdomen of the patient to provide a passage through which the laparoscopic surgical instrument is inserted, and has an insertion hole into which the laparoscopic surgical instrument is inserted, and an upper body disposed outside the abdomen of the patient. ; A tubular body extending from a lower end of the upper body and having a smaller cross-sectional area than the lower end of the upper body and formed of a soft material to be in close contact with an inner circumferential surface of a hole drilled in the abdomen; A lower body extending from a lower end of the body, the lower body being inserted into a hole drilled in the abdomen and disposed inside the abdomen of the patient and then spreading to an area larger than the cross-sectional area of the body; And a lower portion of the upper body and an inner circumferential surface of the body, wherein the lower end portion corresponding to the lower end of the body is formed of a rigid material to reduce friction that may occur when the laparoscopic surgical instrument is inserted into the body. It can be achieved by a single port surgical trocar according to the invention, characterized in that it comprises a tubular rigid member having a larger cross-sectional area than usual when the laparoscopic surgical instrument is inserted.

Here, the lower end of the rigid member is formed toward the upper side along the circumference, the upper side is formed with a fixed end and the lower side has a plurality of expansion grooves formed as a free end, the lower body is unfolded when the laparoscopic surgical instrument is inserted By spreading in the direction, it can have a larger cross-sectional area than usual.

In addition, the upper end of the rigid member corresponding to the lower end of the upper body, may have a larger cross-sectional area than usual when the laparoscopic surgical instrument is inserted, in order to realize this, the upper end of the rigid member is lower along the circumference It is formed as, the upper side and the lower side is provided with a plurality of expansion holes formed as a fixed end, the area of the expansion hole when the laparoscopic surgical instrument is inserted, thereby having a larger cross-sectional area than usual.

In addition, the upper body may further include a gas entrance to which a gas pipe for introducing or discharging gas into the abdomen of the patient is further mounted, and the insertion aid is mounted to the insertion hole to assist insertion of the laparoscopic surgical instrument. It may be provided.

At this time, one side of the insertion aid may be connected to the auxiliary gas pipe for introducing or discharging gas into the abdomen of the patient, the inner side of the gas pipe mounted on the gas inlet or the auxiliary gas pipe connected to the insertion aid by the external force A prevention member may be provided to prevent the shape from being deformed.

In addition, in the single-port surgical trocar according to the present invention, the body may be formed of silicon (silicon) material, the rigid member may be formed of Teflon (teflon) material.

According to the single-port surgical trocar according to the present invention, a plurality of laparoscopic surgery is provided by providing a rigid member formed of a rigid material on the inner circumferential surface of the body formed of a soft material in order to contact the hole drilled in the abdomen of the patient There is an advantage that the insertion and withdrawal of the instrument is easy.

In addition, even if the rigid member is provided on the inner circumferential surface of the body, the upper and lower portions of the rigid member is configured to have a larger cross-sectional area when the laparoscopic surgical instrument is inserted, so that the outer shell is formed in a hole drilled in the abdomen of the trocar installed patient. There is an advantage that the surgery can be easily performed on the tissue existing in a small area.

1 is a perspective view showing an embodiment of a single port surgical trocar according to the present invention.

Figure 2 is an exploded perspective view showing an embodiment of a single port surgical trocar according to the present invention in accordance with each component.

Figure 3 is a perspective view showing a rigid member of an embodiment of a single port surgical trocar according to the present invention.

4 and 5 are cross-sectional views showing the action of a single-port surgical trocar, for example.

Figure 6 is a cross-sectional view showing the operation of one embodiment of a single port surgical trocar according to the present invention.

B: Skin constituting the abdomen of the patient I: Laparoscopic surgical instruments

100: upper body 110: insertion hole

120: gas outlet 122: gas pipe

130: insertion aid 132: auxiliary gas pipe

124, 134: prevention member 200: body

210: upper part of the body 220: lower part of the body

300: lower body 400: rigid member

410: expansion groove 420: expansion hole

Hereinafter, an embodiment of a single port surgical trocar according to the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted to clarify the gist of the present invention.

First, referring to Figures 1 to 3, each component included in one embodiment of the single port surgical trocar according to the present invention will be described.

1 is a perspective view showing an embodiment of a single port surgical trocar according to the present invention, and FIG. 2 is an exploded view of an embodiment of the single port surgical trocar according to the present invention for each component. 1 is an exploded perspective view, Figure 3 is a perspective view showing a rigid member of an embodiment of a single port surgical trocar according to the present invention.

As shown in Figures 1 to 3, one embodiment of a single port surgical trocar according to the present invention, the upper body 100 and the body 200 and the lower body 300 and the rigid member 400 It can be configured to include.

The upper body 100 is a portion disposed outside the abdomen of the patient, and is formed in a larger cross-sectional area than the body 200 to be described later so as not to be inserted into a hole drilled in the abdomen of the patient. That is, the upper body 100 serves to fix the body 200 to a hole drilled in the abdomen of the patient together with the lower body 300 to be described later.

In addition, the upper body 100 serves as an inlet to allow the gas and laparoscopic surgical instrument (I) necessary to perform the laparoscopic surgery. That is, the upper body 100 includes an insertion opening 110 into which the laparoscopic surgical instrument I is inserted, and a gas entrance 120 to which the gas pipe 120 provided to introduce gas is mounted.

The insertion hole 110 and the gas outlet 120 may be located at the upper end of the upper body 100 as shown, but may also be located on the side according to the surgical site of the patient. In addition, the number of the insertion hole 110 and the gas outlet 120 is not limited as the position, and may be provided in large numbers according to the number of laparoscopic surgical instruments I used at the time of surgery.

In addition, the insertion hole 110 and the gas outlet 120 may protrude from the upper body 100. This is to prevent the gas in the abdomen due to the movement of the laparoscopic surgical instrument (I) during surgery, while the gas pipe 122 and the insertion aid 130 is easy to be mounted.

Here, the gas pipe 122 is mounted to the gas inlet 120 to inject or discharge gas into the abdomen of the patient, one side is connected to the gas inlet 120 and the other side of the valve to control the inlet and outlet of the gas It may be provided. In this case, the gas pipe 122 may include a disaster prevention member 124 to prevent the pipe shape from being deformed by external force during surgery. That is, the prevention member 124 is required to prevent the case where the gas pipe 122 is unexpectedly pressed to prevent the gas from flowing in and out, and may be configured in the form of a rigid coil spring to maintain the pipe shape. .

And, the insertion aid 130 is mounted to the insertion hole 110 to assist the laparoscopic surgical instrument (I) is inserted, one side is inserted into the insertion hole 110 is connected and the other side is laparoscopic surgical instrument (I) Is provided with a hole having a larger diameter than the insertion hole 110 to facilitate the insertion of. However, the hole will be provided with a rubber plate, a valve or the like so that the gas inside the abdomen before and after the insertion of the laparoscopic surgical instrument (I). An auxiliary gas pipe 132 having a function similar to the above-described gas pipe 122 may be provided on one side of the insertion aid 130, and the auxiliary gas pipe 132 may be deformed by external force during surgery. In order to prevent the disaster prevention member 134 may be provided. In addition, the insertion aid 130 is rigid, unlike the upper body 100 and the insertion hole 110, in order to prevent damage to the upper body 100 and the insertion hole 110 during insertion of the laparoscopic surgical instrument (I). It may be composed of a material.

The upper body 100 having the insertion hole 110 or the insertion aid 130 as described above allows the laparoscopic surgical instrument I to be inserted at various angles, and the movement of the laparoscopic surgical instrument I during surgery. It is advantageous not to restrain. Therefore, the upper body 100 is advantageously formed to have an empty space inside, it is advantageous to be formed of a soft material, such as the body 200 to be described later. However, the material of the upper body 100 does not necessarily need to be formed of the same material as the body 200.

On the other hand, the body 200 is a portion in contact with the inner circumferential surface of the hole drilled in the abdomen of the patient, is formed in a tubular shape, serves as a passage for the insertion or withdrawal of laparoscopic surgical instrument (I).

The body 200 is formed to extend from the lower end of the upper body 100, it is configured to have a smaller cross-sectional area than the lower end of the upper body (100). At this time, the point extending from the lower end of the upper body 100 may be formed to be smoothly curved so as not to be caught when the laparoscopic surgical instrument (I) is inserted. As such, the boundary surface of the upper body 100 and the body 200 may be formed to be able to be in close contact with the abdomen of the patient according to an embodiment of the single-port surgical trocar according to the present invention.

In addition, the body 200 may be formed of a soft material to contact the inner circumferential surface of the hole drilled in the abdomen of the patient. This is to prevent the outflow of gas present in the abdomen which may occur when the body 200 does not come in close contact with the inner circumferential surface of the hole drilled in the abdomen of the patient.

The kind of the soft material forming the body 200 may be any material as long as it is harmless to the human body and can be in close contact with the inner circumferential surface of the hole drilled in the abdomen of the patient. (silicon) is mentioned.

Silicon is a high molecular compound made of silicon and oxygen. It is not only harmless to human body, but also has little property of being invaded by polar organic compounds such as acid and alkali, and its elasticity is good due to its high molecular structure. It may be used as a material for forming the body 200.

On the other hand, the lower body 300 is a portion that serves to fix an embodiment of the single port surgical trocar according to the present invention from the inside of the abdomen, is inserted into a hole drilled in the abdomen of the patient inside the abdomen of the patient After being disposed, it is possible to fix the embodiment by expanding the area larger than the cross-sectional area of the body 200.

Therefore, the lower body 300 is formed of a material such as silicone having elasticity as a soft material like the above-described body 200 is inserted into a hole drilled in the abdomen of the patient and then deployed inside the abdomen of the patient. It is advantageous.

The lower body 300 may extend from the lower end of the body 200. That is, the upper body 100 and the body 200 and the lower body 300 may be formed in one piece.

At this time, the point extending from the lower end of the body 200, such as the interface between the upper body 100 and the body 200, may be formed to be smoothly curved so as not to be caught when the laparoscopic surgical instrument (I) is inserted, the present invention According to one embodiment of the single port surgical trocar according to may also serve to be in close contact with the abdomen of the patient.

As such, in one embodiment of the single port surgical trocar according to the present invention, the upper body 100 is outside the abdomen of the patient, the body 200 in the hole drilled in the abdomen, the lower body 300 is the abdomen In close contact with each other, the laparoscopic surgical instrument I forms a passage through which the instrument can be safely inserted or withdrawn.

However, if an embodiment of the single-port surgical trocar according to the present invention is formed only of a soft material such as a silicon member, the adhesiveness with the abdomen as described above and the degree of freedom of the laparoscopic surgical instrument I during surgery (the Although there is an advantage of securing a degree of freedom, there may be a problem that friction may occur when the laparoscopic surgical instrument I is inserted. Therefore, one embodiment of the single port surgical trocar according to the present invention includes a rigid member 400 of the tubular shape as described below.

That is, the rigid member 400 is provided on the lower end of the upper body 100 and the inner circumferential surface of the body 200, and serves to reduce friction that may occur when the laparoscopic surgical instrument I is inserted into the body 200. do.

At this time, there may be a variety of ways to reduce the friction that may occur when the laparoscopic surgical instrument (I) is inserted into the body 200. In one of the methods, unlike the material of the body 200, the rigid member 400 may be formed of a rigid material.

That is, when a laparoscopy surgical instrument (I) is inclined a lot in order to operate the tissue existing in the small outer shell in the hole drilled in the abdomen of the patient, as shown in FIG. 5, if there is no rigid member 400, Since the body 200 is made of a soft material, the body 200 is crushed to increase the surface contact with the laparoscopic surgical instrument (I) may increase the friction. However, if there is a rigid member 400 made of a rigid material as shown in Figure 6, since the body 200 is not crushed, the surface in contact with the laparoscopic surgical instrument (I) can be reduced to reduce friction.

In this case, the material of the rigid material forming the rigid member 400 is harmless to the human body, and any material as long as the material has strength enough to maintain the appearance of the body 200 when the laparoscopic surgical instrument I is inserted. For the sake of more specific explanation, teflon can be used.

Teflon is a fluorine resin (polytetrafluoroethylene (PTFE)) refers to a plastic (polytetrafluoroethylene; PTFE), which is harmless to the human body, the friction coefficient is extremely low, and has a strong characteristic against chemicals to form a rigid member 400 It can be used as a material.

However, the rigid member 400 formed of such a rigid material may interfere with tilting the laparoscopic surgical instrument (I) during surgery, that is, may inhibit the degree of freedom of the laparoscopic surgical instrument (I). Therefore, it can be configured as follows.

That is, the lower end of the rigid member 400 corresponding to the lower end of the body 200 may be configured to have a larger cross-sectional area than usual when the laparoscopic surgical instrument I is inserted.

At this time, the lower end of the rigid member 400 may be configured to have a larger cross-sectional area than usual when the laparoscopic surgical instrument (I) is inserted, there can be a variety of methods, but as an example method having an expansion groove 410 Will be described below.

That is, the lower end of the rigid member 400 is provided with a plurality of expansion grooves 410 formed toward the upper side along the circumference, the rigidity divided by the expansion groove 410 when the laparoscopic surgical instrument (I) is inserted A portion of the lower end of the member 400 may have a larger cross-sectional area by spreading in the direction in which the lower body 300 is unfolded.

At this time, the expansion groove 410, unlike the expansion hole 420 formed in the upper end of the rigid member 400 to be described later, so that a portion of the lower end of the rigid member 400 is opened in the unfolding direction of the lower body 300 , The upper side is formed as a fixed end and the lower side is formed as a free end.

On the other hand, the rigid member 400 may be configured as follows in addition to the above-described configuration in order not to interfere with the tilting of the laparoscopic surgical instrument (I) during surgery.

That is, the upper end of the rigid member 400 corresponding to the lower end of the upper body 100 may be configured to have a larger cross-sectional area than usual when the laparoscopic surgical instrument I is inserted.

At this time, there may be a variety of methods to configure the upper end of the rigid member 400 to have a larger cross-sectional area than usual when the laparoscopic surgical instrument (I) is inserted, but as an example method having an expansion hole 420 Will be described below.

That is, the upper end of the rigid member 400 is provided with a plurality of expansion holes 420 formed downward along the circumference thereof, so that the area of the expansion hole 420 is increased when the laparoscopic surgical instrument I is inserted It is possible to have a larger cross-sectional area.

At this time, the upper end of the rigid member 400, so as not to interfere with the insertion of the laparoscopic surgical instrument (I), unlike the lower end of the rigid member 400 should not be opened in the direction in which the upper body 100 is formed. Therefore, the expansion hole 420, unlike the expansion groove 410, both the upper side and the lower side is formed as a fixed end. That is, since both the upper side and the lower side of the expansion hole 420 is formed as a fixed end, the upper end of the rigid member 400 only the surface in contact with the laparoscopic surgical instrument (I) when the laparoscopic surgical instrument (I) is inserted into the upper body 100 Will be pushed toward the bottom or body 200.

Hereinafter, the operation and effects of one embodiment of the single port surgical trocar according to the present invention will be described in detail by assuming a different single port surgical trocar.

4 and 5 are cross-sectional views showing the operation of the single-port surgical trocar, for example, while FIG. 6 is a cross-sectional view showing the operation of an embodiment of the single-port surgical trocar according to the present invention. In order to help those skilled in the art to understand, components having the same shape and similar functions have the same reference numerals, but are not substantially the same components.

As shown in FIG. 4, instead of the rigid member 400 having the single port surgical trocar, the body 200 may be assumed to be a rigid material rather than a flexible material.

In this case, since the body 200 is made of a rigid material, the area between the body 200 and the laparoscopic surgical instrument I is not large, so that friction between the laparoscopic surgical instrument I and the assumed single-port surgical trocar is assumed. Is less. Therefore, it is easy to insert or withdraw the laparoscopic surgical instrument (I).

However, the spatial angle θ ₁ through which one laparoscopic surgical instrument I can move from side to side in the drawing is a laparoscopic surgical instrument ( Compared to the space angle θ ₂ where I) can move, it is very limited. This limited spatial angle will be exacerbated when additional laparoscopic surgical instruments are inserted.

This limited spatial angle not only makes it very difficult to operate on the tissues in the small outer shell of the hole in the patient's abdomen. It is possible to induce a situation that is very dangerous to the patient, such as a departure from the skin (B) constituting the patient's abdomen to leak gas in the abdomen.

Therefore, since it is difficult to install a single-port surgical trocar in this way, it is difficult to perform laparoscopic surgery in a single port. You will have to drill a hole and multi-port surgery.

Meanwhile, as shown in FIG. 5, it may be assumed that the single port surgical trocar is formed of a flexible material without having the rigid member 400.

In this case, as opposed to the single-port surgical trocar assumed in FIG. 4, a space angle at which one laparoscopic surgical instrument I can move from side to side in the drawing may be sufficiently secured.

However, because the area where the body 200 and the laparoscopic surgical instrument (I) is large, the friction between the laparoscopic surgical instrument (I) and the assumed single-port surgical trocar will increase. Therefore, there will be considerable difficulty in inserting or withdrawing laparoscopic surgical instruments (I), which will be aggravated when additional laparoscopic surgical instruments are additionally inserted.

This difficulty enables surgery on tissues present in the small crust in the perforated hole in the patient's abdomen.However, the single port surgical trocar is damaged during insertion and withdrawal of the laparoscopy instrument (I). It can lead to a very dangerous situation.

However, if laparoscopic surgery is performed by installing the single port surgical trocar according to the present invention as shown in FIG. 6, since the above-mentioned difficulties can be overcome, the single port without additional puncture in the abdomen of the patient is provided. Surgery is possible.

That is, in one embodiment of the single-port surgical trocar according to the present invention, since the friction between the laparoscopic surgical instrument I and the body 200 by the rigid member 400, a plurality of laparoscopic surgical instruments single port It will be possible to easily perform laparoscopic surgery while inserting or withdrawing it in.

In addition, one embodiment of the single-port surgical trocar according to the present invention, the body made of a flexible material by the expansion groove 410 provided on the lower end of the rigid member 400 and the expansion hole 420 provided on the upper end Since the characteristics of 200 can be utilized, a sufficient space angle θ ₂ can be secured, while laparoscopic surgery can be easily performed even if another laparoscopic surgical instrument I is inserted.

While specific embodiments of the invention have been described and illustrated above, it is to be understood that the invention is not limited to the described embodiments, and that various modifications and changes can be made without departing from the spirit and scope of the invention. It is self-evident to those who have. Therefore, such modifications or variations are not to be understood individually from the technical spirit or point of view of the present invention, the modified embodiments will belong to the claims of the present invention.

Claims

A trocar installed in a hole drilled in a patient's abdomen to provide a passage into which a laparoscopic surgical instrument is inserted,

An upper body having an insertion hole into which the laparoscopic surgical instrument is inserted and disposed outside the abdomen of the patient;

A tubular body extending from a lower end of the upper body and having a smaller cross-sectional area than the lower end of the upper body and formed of a soft material to be in close contact with an inner circumferential surface of a hole drilled in the abdomen;

A lower body extending from a lower end of the body, the lower body being inserted into a hole drilled in the abdomen and disposed inside the abdomen of the patient and then spreading to an area larger than the cross-sectional area of the body; And

It is provided on the lower end of the upper body and the inner circumferential surface of the body, is formed of a rigid material to reduce the friction that may occur when the laparoscopic surgical instrument is inserted into the body, the lower end corresponding to the lower end of the body And a tubular rigid member having a larger cross-sectional area than usual when the laparoscopic surgical instrument is inserted.
According to claim 1, wherein the lower end of the rigid member is formed toward the upper side along the circumference, the upper side is formed with a fixed end and the lower side is provided with a plurality of expansion grooves formed as a free end, when the laparoscopic surgical instrument is inserted By unfolding the lower body in the unfolded direction, it characterized in that it has a larger cross-sectional area than usual, single port surgical trocar.
The single port surgical trocar according to claim 1, wherein the upper end of the rigid member corresponding to the lower end of the upper body has a larger cross-sectional area than usual when the laparoscopic surgical instrument is inserted.
According to claim 3, wherein the upper end of the rigid member is formed in the lower side along the circumference, the upper side and the lower side is provided with a plurality of expansion holes formed as a fixed end, the area of the expansion hole when the laparoscopic surgical instrument is inserted A single-port surgical trocar, characterized by having a larger cross-sectional area than usual.
The single port surgical trocar according to claim 1, wherein the upper body further comprises a gas entrance to which a gas pipe for introducing or discharging gas into the abdomen of the patient is mounted.
The single port surgical trocar according to claim 5, wherein the upper body further includes an insertion aid provided in the insertion hole to assist the insertion of the laparoscopic surgical instrument.
According to claim 6, One side of the insertion aid is connected to the auxiliary gas pipe for introducing or discharging gas into the abdomen of the patient, the inner side of the gas pipe mounted on the gas inlet or the auxiliary gas pipe connected to the insertion aid Single-port surgical trocar, characterized in that the prevention member for preventing the deformation of the tubular shape by the external force is provided.
The single port surgical trocar according to any one of claims 1 to 7, wherein the body is formed of a silicon material.
The trocar according to any one of claims 1 to 7, wherein the rigid member is formed of a teflon material.