JP2012080944A - Surgical endoscope apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a surgical endoscope apparatus capable of maintaining airtightness even though soft endoscopes with various outer diameters are passed through a trocar, in which how to use is simple, and which can be easily used.SOLUTION: Magnets 110, 32 generating attraction force by magnetic force in a radial direction between a flexible tube part 11 and the trocar 30 with the flexible tube part 11 passed through the trocar 30 are arranged in the outer peripheral wall of the flexible tube part 11 and in the inner peripheral wall of the trocar 30, the flexible tube part 11 is passed through the trocar 30, the magnet 110 of the flexible tube part 11 side and the magnet 32 of the trocar 30 side are attracted to each other, thereby the outer peripheral face of the flexible tube part 11 and the inner peripheral face of the trocar 30 come into close contact with each other with at least one of them expanded.

Description

  The present invention provides a flexible endoscope for observing a surgical site in the body during laparoscopic surgery (or thoracoscopic surgery), and the like, and is inserted into a body wall portion to guide the flexible endoscope into the body. The present invention relates to an endoscopic apparatus for surgery provided with a trocar disposed in a stagnation state.

  Laparoscopic surgery or the like is performed in a state where the abdominal cavity is inflated with pneumoperitone gas injected from the outside in order to ensure an appropriate interval between the endoscope and the affected part. If there is a gap between the trocar and the flexible endoscope when the flexible endoscope is inserted into the trocar, the pneumoperitoneum gas escapes from it, making it impossible to maintain an appropriate distance from the affected area. End up.

  Therefore, a trocar provided with an airtight valve for preventing the insufflation gas from escaping is used. Specifically, there is a seal member provided with a flap valve that can be closed by a magnetic force at the tip opening of the trocar (for example, Patent Document 1) or a through-hole through which a flexible endoscope or the like passes. There are provided trocars (for example, Patent Document 2).

JP 2000-246 JP-A-5-293112

  However, the invention described in Patent Document 1 requires a lid-like member for closing the opening on the inlet side of the trocar in addition to the flap valve, and is airtight in a state where the flexible endoscope is passed through the trocar. Is difficult to hold.

  On the other hand, in the invention described in the cited document 2, from among a large number of sealing members having different through-hole diameters so that airtightness can be maintained even when a flexible endoscope having various outer diameters is passed through the trocar. One of them can be selected and used.

  However, such a trocar is not only difficult to select a seal member and difficult to use, but also has a perfect through-hole (that is, airtightness) to the outer diameter of the insertion portion of the flexible endoscope that is passed through the trocar. If there is no through-hole having a diameter that allows the flexible endoscope to be advanced and retracted in the state, it cannot be used.

  An object of the present invention is to provide a surgical endoscope apparatus that can maintain airtightness even through a flexible endoscope having various outer diameters through a trocar, and that is easy to use and easy to use.

  In order to achieve the above object, the surgical endoscope apparatus of the present invention has a bending portion that can be bent by remote operation connected to the distal end of a flexible flexible tube portion, and an observation window is provided. A flexible endoscope having a flexible insertion portion having a configuration in which a disposed distal end portion body is connected to a distal end of a bending portion, and a trocar for guiding the flexible insertion portion of the flexible endoscope into the body And at least one of the inner peripheral surface of the trocar through which the flexible tube portion passes and the outer peripheral surface of the flexible tube portion is formed of a wall surface having an expansion / contraction property. When the flexible tube portion is passed through the trocar, a magnetic force is generated between the flexible tube portion and the trocar in the radial direction between the flexible tube portion and the trocar. Placed, the flexible tube part is passed through the trocar, the magnet and trocar on the flexible tube side By the magnets attract each other, and a flexible tube portion outer peripheral surface and the inner circumferential surface of the trocar of, but in close contact is at least one of which inflated state.

  In addition, the magnet provided in the flexible tube portion may be a permanent magnet arranged around the axis of the flexible tube portion, and the magnet provided in the trocar is arranged around the axis of the trocar. An electromagnet may be used.

  According to the present invention, the flexible tube portion is passed through the trocar, and the magnet on the flexible tube portion side and the magnet on the trocar side attract each other, so that the outer peripheral surface of the flexible tube portion and the inner peripheral surface of the trocar are Therefore, the trocar can be kept airtight even through flexible endoscopes having various outer diameters, and it is possible to obtain special effects such as ease of use and ease of use.

1 is a schematic side cross-sectional view of a surgical endoscope apparatus according to an embodiment of the present invention. 1 is a schematic side cross-sectional view of a surgical endoscope apparatus according to an embodiment of the present invention. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2 of the surgical endoscope apparatus according to the embodiment of the present invention. It is sectional drawing of the other structural example of the permanent magnet used for the endoscope apparatus for a surgery of the Example of this invention.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 2 shows the surgical endoscope apparatus of the present invention. The surgical endoscope apparatus according to the present invention includes a flexible endoscope 10 and a trocar 30.

  The trocar 30 disposed in a state of being pierced into the body wall 100 during the endoscopic operation serves as a guide tube for guiding the flexible endoscope 10 into the body, and the flexible endoscope 10 is trocared. 30 is inserted into the body. On the proximal end side of the trocar 30, a hook-like portion 31 is formed so as to protrude from the body.

  In the trocar 30 of this embodiment, a cylindrical electromagnet 32 is arranged around the axis of the trocar 30 over substantially the entire length. The magnetic poles of the electromagnet 32 are an inner peripheral surface and an outer peripheral surface. In this embodiment, the inner peripheral surface side is the S pole and the outer peripheral surface side is the N pole. However, the reverse is also acceptable.

  Reference numerals 33 and 34 denote a switch button and a switching circuit for turning on / off the electromagnet 32. For example, the electromagnet 32 is turned on when the switch button 33 is pressed once, and is turned off when the switch button 33 is pressed again.

  The outer peripheral side of the trocar 30 configured in this way is made of hard plastic, but the inner peripheral portion of the electromagnet 32 is formed of a resilient material, and the inner peripheral wall 30i is inward (that is, It is configured to be able to swell inward in the radial direction.

  The electromagnet 32 is not fixed in the trocar 30 and is arranged so as to be able to move inward (inward in the radial direction) by elastically deforming the flexible inner peripheral wall 30i from the outer peripheral side.

  The flexible insertion portion of the flexible endoscope 10 formed so as to be able to pass through the trocar 30 loosely can be arbitrarily bent by a flexible flexible tube portion 11 and an operation from the proximal end side. The bending portion 12 connected to the distal end of the flexible tube portion 11 and the distal end portion main body 13 in which an observation window, an illumination window, and the like are arranged on the distal end surface 13a and connected to the distal end of the bending portion 12 are configured. ing.

  Various operation members such as a bending operation knob 15 that can be bent arbitrarily by remotely operating the bending portion 12 are disposed on the operation portion 14 connected to the proximal end of the flexible tube portion 11. Yes.

  The configuration of the bending portion 12 is the same as the bending portion of a known endoscope. For example, a reticulated tube is coated on the outer surface of a skeleton that is configured by a plurality of articulated rings being rotatably connected by rivets or the like. Further, the outer surface of the bending portion is covered with a flexible tube covered with a flexible rubber tube or the like, and bent by pulling the bending operation wire connected to the distal end portion of the bending portion 12 from the operation portion 14 side.

  The flexible tube portion 11 of this embodiment that constitutes the flexible insertion portions 11, 12, and 13 has a permanent magnet 110 incorporated into a tubular shape over a substantially entire length in the configuration of the flexible tube portion of a known endoscope. It is configured. The permanent magnet 110 is formed in a cylindrical shape surrounding the axis of the flexible tube portion 11.

  FIG. 3 illustrates a cross section (III-III cross section in FIG. 2) perpendicular to the axial direction when the flexible tube portion 11 is passed through the trocar 30. The flexible tube portion 11 is formed by, for example, covering a mesh tube 112 on the outer surface of a spiral tube 111 made of a metal strip having a spring property, a permanent magnet 110 is disposed along the outer surface, and a synthetic resin material on the outermost layer. The outer skin 113 is covered and covered by extrusion molding or the like.

  In the flexible tube portion 11, various signals such as an observation system signal cable 21, an illumination light guide 22, a treatment instrument insertion channel 23, an air / water supply tube 24, and a guide coil 25 through which a bending operation wire is inserted. The built-in objects are inserted through the entire length.

  The permanent magnet 110 is obtained by mixing a permanent magnet powder such as ferrite with a flexible synthetic resin material, for example. Like the electromagnet 32, the inner peripheral surface side is an S pole and the outer peripheral surface side is an N pole. It has become.

  The surgical endoscope apparatus configured as described above is inserted by inserting the flexible insertion portions 11, 12, and 13 of the flexible endoscope 10 into the trocar 30 from the outside as shown in FIG. When the electromagnet 32 is turned on when the flexible tube portion 11 is passed through the trocar 30, the permanent magnet 110 provided on the flexible tube portion 11 and the electromagnet 32 provided on the trocar 30 are connected. Adsorption force due to magnetic force is generated between them.

  Then, as shown in FIG. 1, when the electromagnet 32 is attracted to the permanent magnet 110, the elastic inner peripheral wall 30 i of the trocar 30 is elastically deformed inward and a gap is formed in the outer peripheral surface of the flexible tube portion 11. Closely seal and seal. When the electromagnet 32 is turned off, the state returns to a state in which there is a gap between the outer peripheral surface of the flexible tube portion 11 and the inner peripheral wall 30i of the trocar 30 as shown in FIG.

  In this way, the inner peripheral wall 30 i of the trocar 30 is brought into close contact with the outer peripheral surface of the flexible tube portion 11 regardless of the outer diameter of the flexible tube portion 11, and the outer peripheral surface of the flexible tube portion 11 and the trocar 30. The inner wall 30i can be kept airtight, easy to use and very easy to use.

  The present invention is not limited to the above-described embodiment. For example, the magnetic poles of the electromagnet 32 on the trocar 30 side and the permanent magnet 110 on the flexible tube portion 11 side are on the flexible tube portion 11 side and the trocar 30 side. What is necessary is just to arrange | position in the relationship which a suction force produces.

  In the present invention, the electromagnet 32 provided on the trocar 30 side may be replaced with a permanent magnet. In that case, as illustrated in FIG. 4, the permanent magnet 32 ′ may be divided into a plurality in the circumferential direction and configured to be movable in the radial direction.

  In addition, although there are manufacturing difficulties, if a product that can be used as the flexible tube portion 11 of the flexible endoscope 10 can be manufactured, the permanent magnet 110 provided on the flexible endoscope 10 side can be used as an electromagnet. It can be replaced.

  In the present invention, when the magnet on the flexible tube portion 11 side and the magnet on the trocar side attract each other, at least one of the outer peripheral surface of the flexible tube portion 11 and the inner peripheral surface of the trocar 30 swells. Any structure that adheres closely may be used.

10 flexible endoscope 11 flexible tube part (flexible insertion part)
12 Curved part (flexible insertion part)
13 Tip body (flexible insertion part)
30 trocar 32 electromagnet 32 'permanent magnet 110 permanent magnet

Claims (3)

It is possible to have a configuration in which a bending portion that can be bent by remote operation is connected to the distal end of a flexible flexible tube portion, and a distal end main body on which an observation window is arranged is connected to the distal end of the bending portion. In a surgical endoscope apparatus provided with a flexible endoscope provided with a flexible insertion portion and a trocar for guiding the flexible insertion portion of the flexible endoscope into the body,
At least one of the inner peripheral surface of the trocar or the outer peripheral surface of the flexible tube portion through which the flexible tube portion passes is formed of a wall surface having expansion / contraction properties,
When the flexible tube portion is passed through the trocar, magnets that generate a magnetic attractive force between the flexible tube portion and the trocar in the radial direction are formed in the outer peripheral wall of the flexible tube portion and the Arranged in the inner wall of the trocar,
The flexible tube portion is passed through the trocar, and the flexible tube portion side magnet and the trocar side magnet attract each other, whereby the outer peripheral surface of the flexible tube portion and the inner peripheral surface of the trocar However, at least one of them is in a swelled state and is in close contact with the surgical endoscope apparatus.   The surgical endoscope apparatus according to claim 1, wherein the magnet provided in the flexible tube portion is a permanent magnet disposed so as to surround the axis of the flexible tube portion.   The surgical endoscope apparatus according to claim 1 or 2, wherein the magnet provided on the trocar is an electromagnet disposed around the axis of the trocar.

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