JP2006325780A - Distal end of ultrasonic endoscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the distal end section of an ultrasonic endoscope capable of spouting a jelly filling toward the surface of an ultrasonic probe easily and immediately according to the necessity. <P>SOLUTION: A filling feeding conduit 6 for letting the jelly filling 20 pass to eliminate an air layer between the surface of the ultrasonic probe 3 and an intracorporeal mucous membrane 100 is inserted into/disposed in an insertion tube 1 parallel to a treatment instrument insertion channel 5. A filling spout 6o, the exit of the filling feeding conduit 6, is opened/formed at a position closer to the ultrasonic probe 3 than a treatment instrument projecting port 5o. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a distal end portion of an ultrasonic endoscope.

Ultrasound has low propagation in the air. Therefore, in an ultrasonic endoscope, it is necessary to eliminate an air layer between the surface of the ultrasonic probe and the body mucous membrane.
Therefore, an ultrasonic endoscope for the digestive tract has a configuration in which an inflatable and inflatable balloon surrounding the ultrasonic probe is provided and the balloon is filled with deaerated water, but the airway is blocked when the balloon is inflated. In an ultrasonic endoscope or the like, a jelly-like filling material is filled between the surface of an ultrasonic probe and a body mucosa using a treatment instrument insertion channel (for example, Patent Document 1).
JP 2001-276074 A

  FIG. 7 shows the distal end portion of the conventional ultrasonic endoscope as described above, and an ultrasonic probe 92 is disposed at the most distal end portion of the insertion portion 91, and the treatment instrument is inserted through the entire length of the insertion portion 91. A channel 93 is inserted and arranged.

  When filling a jelly-like filler 94 between the surface of the ultrasonic probe 92 and the body mucosa 100 in such an ultrasonic endoscope, the filler is supplied through the filler supply tube 95 to the treatment instrument insertion channel 93. A filler 94 is discharged from the tip of the supply tube 95 toward the surface of the ultrasonic probe 92.

  However, in such an operation, every time it is necessary to discharge the filler 94 onto the surface of the ultrasonic probe 92, the treatment instrument inserted through the treatment instrument insertion channel 93 is temporarily removed from the treatment instrument insertion channel 93. Then, after the filler supply tube 95 is passed through the treatment instrument insertion channel 93 and the filler 94 is discharged, the filler supply tube 95 must be removed and the treatment instrument inserted into the treatment instrument insertion channel 93 again. Therefore, it takes time to operate, and it may be a heavy burden on both the operator and the subject.

  Therefore, an object of the present invention is to provide a distal end portion of an ultrasonic endoscope capable of ejecting a jelly-like filler immediately and easily toward the surface of an ultrasonic probe as necessary.

  In order to achieve the above object, the distal end portion of the ultrasonic endoscope according to the present invention includes an ultrasonic wave for performing ultrasonic scanning in which a treatment instrument insertion channel for guiding treatment instruments is inserted and arranged in the insertion section. A treatment tool projection opening for projecting the probe and the distal end of the treatment instrument through the treatment instrument insertion channel into the ultrasonic scanning range by the ultrasonic probe is arranged at the distal end of the insertion portion. At the distal end of the ultrasonic endoscope, a filler supply conduit for passing a jelly-like filler filled for the purpose of eliminating an air layer between the surface of the ultrasonic probe and the body mucosa is treated. It is inserted and arranged in the insertion portion in parallel with the instrument insertion channel, and the filler discharge port, which is the outlet of the filler supply conduit, is formed at a position closer to the ultrasonic probe than the treatment instrument protrusion. .

  In addition, it is good for the filler injection port for inject | pouring a filler into a filler supply pipe line to be provided in the hand side position from the base end of an insertion part. The filler discharge port may be formed in a flat shape along the rear end side edge of the ultrasonic probe, in which case the filler discharge port extends along the entire width of the rear end side edge of the ultrasonic probe. May be open. Further, the filler supply pipe line may be formed in a cross-sectional shape that gradually becomes flat as it approaches the filler discharge port side in the vicinity of the tip.

  Further, the filler discharge port is disposed adjacent to the rear end side edge of the ultrasonic probe, and a bank-like protruding wall is formed on the side edge near the rear end of the ultrasonic probe. In this case, the protruding wall may be formed only on the side edge of the portion near the rear end of the ultrasonic probe.

  According to the present invention, the filler supply conduit for passing the jelly-like filler is inserted and arranged in the insertion portion in parallel with the treatment instrument insertion channel, and the filler discharge port serving as the outlet of the filler supply conduit is provided. Since the opening is formed at a position closer to the ultrasonic probe than the treatment tool protruding port, the filling material can be ultrasonicated immediately and easily as needed without removing the treatment tool inserted into the treatment tool insertion channel. It can be discharged toward the surface of the probe.

  A treatment instrument insertion channel for guiding treatment instruments is inserted and arranged in the insertion portion, and an ultrasonic probe for performing ultrasonic scanning, an observation window for performing optical observation, and a treatment instrument through the treatment instrument insertion channel. In the distal end portion of the ultrasonic endoscope in which the treatment tool projection for projecting the distal end portion of the distal end of the distal end portion into the ultrasonic scanning range by the ultrasonic probe is disposed at the distal end of the insertion portion, A filling material supply line for passing a jelly-like filling material filled for the purpose of eliminating an air layer between them is inserted in the insertion portion in parallel with the treatment instrument insertion channel, and the filling material supply line A filler discharge port that is an outlet is formed at a position closer to the ultrasonic probe than the treatment instrument protruding port.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 2 shows the entire configuration of the insertion portion of the ultrasonic endoscope, and an ultrasonic probe 3 is provided at the front half of the distal end body 2 connected to the distal end of the flexible insertion portion 1. An operation unit 4 is connected to the proximal end of the insertion unit 1.

  A treatment instrument insertion channel 5 for inserting and guiding treatment instruments is inserted through the entire length of the insertion section 1, and a treatment instrument insertion cap 5 i serving as the inlet is connected to the insertion section 1 and the operation section 4. A treatment instrument projecting port 5o that is disposed in the vicinity and is an outlet is disposed in the distal end portion body 2.

  Further, a filler supply conduit 6 for passing a jelly-like filler filled for the purpose of eliminating an air layer between the surface of the ultrasonic probe 3 and the mucous membrane of the body is inserted in parallel with the treatment instrument insertion channel 5. The filler 1 is inserted through the entire length of the portion 1, the filler inlet 6i serving as the inlet thereof is disposed in the vicinity of the connecting portion between the insertion portion 1 and the operating portion 4, and the filler outlet 6o serving as the outlet is disposed at the tip body. 2 is arranged.

  1 is a perspective view of the distal end portion of the insertion portion 1 of such an ultrasonic endoscope, FIG. 3 is a side sectional view, FIG. 4 is a plan view, and FIG. 5 is a VV sectional view in FIG. 4 shows a state in which a treatment instrument 50 such as an injection needle is projected from the treatment instrument projection port 5o.

  The ultrasonic probe 3 is a so-called convex-type electronic scanning type, and is configured so that an ultrasonic tomographic image of a body tissue or the like can be obtained by ultrasonically scanning the side of the tip body 2 in a fan shape. Are known.

  A treatment instrument protrusion port 5o is arranged at the central portion of the inclined surface 10 formed in the distal end portion body 2 adjacent to the rear side of the ultrasonic probe 3, and an optical observation window 11 and an illumination window 12 are provided on the left and right sides thereof. And are arranged.

  Thereby, optical observation in the ultrasonic scanning direction by the ultrasonic probe 3 can be performed, and the distal end portion of the treatment instrument 50 is protruded into the ultrasonic scanning range by the ultrasonic probe 3, so Endoscopic treatment can be performed.

  The filler discharge port 6o is located closer to the ultrasonic probe 3 than the treatment instrument projection port 5o, and the rear end of the ultrasonic probe 3 is opened along the entire width of the rear end side edge of the ultrasonic probe 3. It is formed in a flat shape along the surface of the side edge.

  As shown in FIG. 5, such a filler discharge port 6 o has a filler passage hole 6 a formed in the distal end body 2 so as to communicate with the filler supply pipe 6 and to the filler discharge port 6 o. It is formed in a cross-sectional shape that gradually becomes wider and flatter as it approaches. Therefore, the filler 20 is discharged in a state where it is uniformly applied to the surface of the ultrasonic probe 3.

  Further, the tip body 2 is formed with bank-like protruding walls 13 at the left and right side edges of the rear half of the surface of the ultrasonic probe 3, and is formed on the surface of the ultrasonic probe 3 from the filler discharge port 6 o. The jelly-like filler discharged toward the outside is prevented from leaking outward.

  However, if the protruding half 13 of the front half of the ultrasonic probe 3 is in close contact with the mucous membrane in the body, the ultrasonic probe 3 is provided behind the ultrasonic probe 3. Only the side half.

  FIG. 6 shows the state of use of the distal end portion of the ultrasonic endoscope of the above embodiment, and a jelly-like filler 20 is injected into the filler supply pipe 6 from a syringe or the like connected to the filler injection port 6i. As a result, the filler 20 is discharged from the filler discharge port 6o between the surface of the ultrasonic probe 3 and the body mucosa 100 to fill the space, and the body tissue located behind the body mucosa 100 is improved. An ultrasonic tomographic image can be obtained.

  In such a case, even if the treatment instrument 50 is inserted into the treatment instrument insertion channel 5, the distal end of the treatment instrument 50 is removed as shown in FIG. 6 without removing the treatment instrument 50 from the treatment instrument insertion channel 5. Is simply retracted into the treatment instrument insertion channel 5 (or with the distal end of the treatment instrument 50 protruding from the treatment instrument projection port 5o if necessary), and the filling material can be discharged appropriately whenever necessary. An operation of discharging the filler 20 from the outlet 6o can be performed.

It is a perspective view of the front-end | tip part of the ultrasonic endoscope of the Example of this invention. It is a side view which shows the whole structure of the insertion part of the ultrasonic endoscope of the Example of this invention. It is side surface sectional drawing of the front-end | tip part of the ultrasonic endoscope of the Example of this invention. It is a top view of the front-end | tip part of the ultrasonic endoscope of the Example of this invention. It is VV sectional drawing in FIG. 3 of the front-end | tip part of the ultrasonic endoscope of the Example of this invention. It is side surface sectional drawing of the use condition of the front-end | tip part of the ultrasonic endoscope of the Example of this invention. It is side surface sectional drawing of the use condition of the front-end | tip part of the conventional ultrasonic endoscope.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Insertion part 2 Front-end | tip part body 3 Ultrasonic probe 5 Treatment tool insertion channel 5o Treatment tool protrusion 6 Filling material supply line 6a Filling material passage hole 6i Filling material inlet 6o Filling material discharge port 11 Observation window 13 Protruding wall 20 Filling Material 50 Treatment tool 100 Internal mucosa

Claims (7)

A treatment instrument insertion channel for guiding treatment instruments is inserted and disposed in the insertion portion, and an ultrasonic probe for performing ultrasonic scanning, an observation window for performing optical observation, and a treatment instrument that has passed through the treatment instrument insertion channel. In the distal end portion of the ultrasonic endoscope in which a treatment instrument projecting port for projecting a distal end portion of a kind into the ultrasonic scanning range by the ultrasonic probe is disposed at the distal end of the insertion portion,
A filler supply conduit for passing a jelly-like filler filled for the purpose of eliminating an air layer between the surface of the ultrasonic probe and the mucous membrane of the body is provided in the insertion portion in parallel with the treatment instrument insertion channel. An ultrasonic endoscope characterized in that the filler discharge port, which is inserted and disposed, is formed at a position closer to the ultrasonic probe than the treatment instrument protrusion port, which is an outlet of the filler supply conduit. The tip of the mirror.   The distal end portion of the ultrasonic endoscope according to claim 1, wherein a filler inlet for injecting the filler into the filler supply conduit is provided at a position closer to the proximal side of the insertion portion.   The distal end portion of the ultrasonic endoscope according to claim 1 or 2, wherein the filler discharge port is formed in a flat shape along a rear end side edge portion of the ultrasonic probe.   The distal end portion of the ultrasonic endoscope according to claim 3, wherein the filling material discharge port is opened along the entire width of the rear end side edge portion of the ultrasonic probe.   The distal end portion of the ultrasonic endoscope according to claim 3 or 4, wherein the filler supply conduit is formed in a cross-sectional shape that gradually becomes flat as it approaches the filler discharge port side in the vicinity of the distal end.   The filler discharge port is disposed adjacent to the rear end side edge of the ultrasonic probe, and a bank-like protruding wall is formed on the side edge of the portion near the rear end of the ultrasonic probe. The distal end portion of the ultrasonic endoscope according to any one of claims 1 to 5.   The distal end portion of the ultrasonic endoscope according to claim 6, wherein the protruding wall is formed only on a side edge portion of a portion near the rear end of the ultrasonic probe.

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