JP4040169B2 - Parent-child endoscope - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a parent-child endoscope used by inserting a child scope through a guide channel of the parent scope.
[0002]
[Prior art]
The operation unit of the child scope is generally held by an assistant, but a child scope holder for holding the operation unit of the child scope is attached to the entrance part of the guide channel of the parent scope, and the operation unit of both the parent and child scopes is operated. There is something that can be held and operated by a person.
[0003]
[Problems to be solved by the invention]
When observing with the child scope, it is necessary to keep the distal end of the insertion portion of the child scope protruding from the tip of the guide channel of the parent scope. Therefore, when the operation unit of the child scope is held by the child scope holder as described above, the distal end of the insertion unit of the child scope protrudes from the distal end of the insertion unit of the parent scope.
[0004]
However, if the parent scope is guided and operated in the body cavity with the distal end of the insertion portion of the child scope protruding from the distal end of the insertion portion of the parent scope, the child scope hits the tissue in the body cavity and damages the mucosal surface. There is a case.
[0005]
In view of the above, an object of the present invention is to provide a highly safe parent-child endoscope that does not cause a risk of damaging the mucosal surface when the parent scope is guided and operated with the operation section of the child scope held by a holder.
[0006]
[Means for Solving the Problems]
To achieve the above object, the parent-child endoscope of the present invention is used by inserting the insertion portion of the child scope into a guide channel provided in the parent scope, and a child scope holder for holding the child scope. In the parent-child endoscope attached to the entrance portion of the guide channel of the parent scope, the child scope holder can be expanded and contracted in the axial direction, and when the child scope holder is most contracted, the distal end of the parent scope is The extension / contraction length (B) of the child scope holder is made longer than the length (A) at which the distal end of the insertion portion of the child scope protrudes.
[0007]
The child scope holder may be detachably attached to the entrance portion of the guide channel of the parent scope, and the child scope holders are connected to each other so as to be slidable relative to each other in the axial direction. You may have a plurality of made cylindrical bodies, and a lock mechanism which can fix / release a connection part of the plurality of cylindrical bodies.
[0008]
Further, a mechanism may be provided in which when the plurality of cylindrical bodies are relatively moved in the axial direction, clicks are made at a plurality of locations in the middle of the movement range.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a parent scope 10, a child scope 30, and a child scope holder 50 that constitute a parent-child endoscope side by side.
[0010]
The parent scope 10 has an operation portion 12 connected to a proximal end of a flexible insertion portion 11 covered with a flexible tube, and a bending portion 11a that can be bent at an arbitrary angle by remote operation from the operation portion 12. It is formed at the distal end portion of the insertion portion 11. And an observation window, an illumination window, etc. are provided in the front-end | tip part main body 11b connected with the front-end | tip of the curved part 11a. In addition, the insertion part 11 means the part including the bending part 11a and the front-end | tip part main body 11b.
[0011]
The lower half of the operation part 12 is a grip part 12a gripped by an operator, a suction (or water supply) operation button 16 is arranged on the front side of the upper half mechanism part 12b, and a bending operation lever ( (Not shown) is arranged.
[0012]
The guide channel 14 for inserting the insertion part 31 of the child scope 30 is inserted and arranged over the entire length in the insertion part 11, and its outlet is opened at the tip of the tip part main body 11b along with the observation window and the like. .
[0013]
The inlet 14b of the guide channel 14 opens straight upward at the upper end portion of the operation portion 12, and a so-called luer lock male base-shaped base 17 is attached, and the axis thereof is the base end portion of the insertion portion 11. It is located almost on the extension line of the axis.
[0014]
The endoscopic observation image of the parent scope 10 is transmitted to the operation unit 12 side by an image guide fiber bundle inserted and arranged in the insertion unit 11, and can be observed with the naked eye through the eyepiece unit 20.
[0015]
The eyepiece unit 20 is disposed obliquely upward on the side surface portion on the upper end side of the operation unit 12. A television camera (not shown) can be connected / removed to / from the eyepiece 20, and an endoscope observation image can be displayed on the television monitor by connecting the television camera.
[0016]
In the child scope 30, an operation unit 32 is connected to a proximal end of a flexible insertion unit 31 covered with a flexible tube, and a bending unit 31a that can be bent at an arbitrary angle is inserted by remote operation from the operation unit 32. It is formed at the tip of the part 31.
[0017]
The insertion part 31 of the child scope 30 is formed with a thickness that can be inserted into and removed from the guide channel 14 of the parent scope 10, and the observation window and the illumination window are connected to the distal end of the bending part 31a. 31b is provided. In addition, the insertion part 31 means the part including the bending part 31a and the front-end | tip part main body 31b.
[0018]
The lower half part of the operation part 32 is a grip part 32a grasped by an operator, a suction (or water supply) operation button 36 is arranged on the front side of the mechanism part 32b of the upper half part, and a bending operation lever ( (Not shown) is arranged.
[0019]
Reference numeral 34 denotes a forceps plug attached to the entrance portion of the treatment instrument insertion channel of the child scope 30, and is arranged at the lower part of the operation unit 32. The endoscopic observation image can be observed through the eyepiece 40 disposed upward at the upper end of the operation unit 32. Reference numeral 41 denotes a light source unit that generates illumination light, and a small light bulb is lit by a built-in battery.
[0020]
Reference numeral 50 denotes a child scope holder, which can be connected / removed to / from the inlet 14b portion of the guide channel 14 of the parent scope 10 at a parent scope connecting portion 53 provided at the lower end. The insertion part 31 of the child scope 30 can be inserted into the intermediate cylinders 51 and 52, and the operation part 32 of the child scope 30 can be held in the child scope holding part 54 provided at the upper end part.
[0021]
55 is a parent lock screw for fixing the parent scope connecting portion 53 to the parent scope 10 side, 56 is a child lock screw for fixing the operation portion 32 of the child scope 30 to the child scope holding portion 54, and 57 is This is a cylinder length lock screw for adjusting and fixing the length of the intermediate cylinders 51 and 52. On the proximal side of each of the lock screws 55, 56, 57, there are formed knobs for picking up with the fingertips and rotating the screws.
[0022]
FIG. 2 shows the child scope holder 50. Each of the fixing screws 55, 56, and 57 is shown in half in a fixed state and a fixed release state. Further, the parent scope 10 and the child scope 30 are indicated by a two-dot chain line.
[0023]
The parent scope connecting portion 53 is placed on the upper end portion of the operation portion 12 so as to surround the inlet 14b portion of the guide channel 14 of the parent scope 10, and the plastic inner cylinder 53a is fitted to the operation portion 12 side.
[0024]
Then, the parent scope connecting portion 53 is fixed to the operation portion 12 of the parent scope 10 by tightening a pointed screw-like parent lock screw 55 that is screwed into a screw hole formed in the side wall of the parent scope connecting portion 53. The intermediate cylinders 51 and 52 communicate with the guide channel 14 in a straight line.
[0025]
The child scope holding portion 54 is fitted with the lower end portion of the operation portion 32 of the child scope 30 from above and is screwed into a screw hole formed on the side wall of the child scope holding portion 54 and is a child-side lock screw 56 having a pointed tip shape. The operation unit 32 of the child scope 30 is fixed to the child scope holding unit 54. Reference numeral 60 denotes a positioning slot for engaging a pin or the like protruding from the operation unit 32 of the child scope 30.
[0026]
The intermediate cylinders 51 and 52 are, for example, the narrower one formed integrally with the parent scope connecting part 53 made of aluminum alloy in the thicker cylinder 51 formed integrally with the child scope holding part 54 made of aluminum alloy. The cylinder 52 is slidably inserted and connected in the axial direction, and both the cylinders 51 and 52 are configured to have a double cylinder structure in which stainless steel pipes 51a and 52a are arranged in the fitting portions. Yes.
[0027]
The threaded portion of the tube length lock screw 57 is screwed into a screw hole formed in the vicinity of the lower end portion of the thicker tube 51 from the side, and contacts the outer surface of the thinner tube 52 at the tip. A friction plate 58 made of rubber or plastic is attached.
[0028]
Therefore, if the tube length lock screw 57 is loosened by grasping the knob portion of the tube length lock screw 57 with the fingertip, the insertion length of the thin tube 52 with respect to the thick tube 51 is changed, so that the intermediate tubes 51, 52 are changed. Can be adjusted to an arbitrary length, and the state can be fixed by tightening the tube length lock screw 57.
[0029]
It should be noted that when the tube length lock screw 57 is loosened, both the tubes 51, 52 are arranged so that the intermediate tubes 51, 52 are not contracted by the weight of the operation unit 32 of the child scope 30 held by the child scope holding unit 54. An O-ring 61 for applying a frictional force is attached to the fitting portion.
[0030]
A plurality of circumferential grooves 59 serving as indexes for adjusting the length are formed at equal intervals on the outer surface of the narrower cylinder 52, and an O-ring 61 is a portion of each circumferential groove 59. A light click is required when passing through.
[0031]
FIG. 3 shows a state in which the child scope holder 50 is attached to the parent scope 10 and the operation unit 32 of the child scope 30 is held by the child scope holding unit 54. Thus, since the parent scope 10 and the child scope 30 are integrated by the child scope holder 50, the surgeon can operate both the parent scope 10 and the child scope 30 alone.
[0032]
And since the child scope holder 50 and the operation part 32 of the child scope 30 are located on the extension line of the axis of the base end part of the insertion part 11 of the parent scope 10, the parent scope 10 was rotated for guidance operation. Sometimes, the operation unit 32 of the child scope 30 is not greatly swung, and an operator can easily operate both the parent scope 10 and the child scope 30 alone.
[0033]
Also, if the cylinder length lock screw 57 is loosened, the intermediate cylinders 51 and 52 can be expanded and contracted, and the thicker cylinder 51 is rotatable around the axis with respect to the thinner cylinder 52, so that the parent scope 10 can be moved. The child scope 30 can be freely advanced and retracted and rotated.
[0034]
In the state shown in FIG. 3, the intermediate cylinders 51 and 52 are shortened to the shortest. At this time, as shown in FIG. 4, the distal end of the insertion part 31 of the child scope 30 is inserted into the insertion part 11 of the parent scope 10. It will be in the state which protrudes most from the tip. Let A be the maximum protrusion length.
[0035]
On the other hand, FIG. 5 shows a state in which the intermediate tubes 51 and 52 of the child scope holder 50 are extended to the longest, and the expansion and contraction length B of the intermediate tubes 51 and 52 is the maximum of the insertion portion 31 of the child scope 30. It is configured to be longer than the protruding length A. That is, A <B.
[0036]
Therefore, in the state where the intermediate cylinders 51 and 52 are extended the longest as shown in FIG. 5, the insertion portion 31 of the child scope 30 is completely drawn into the guide channel 14 of the parent scope 10.
[0037]
Therefore, when guiding the parent scope 10 in the body cavity of the patient, if the tube length lock screw 57 is tightened with the intermediate cylinders 51 and 52 extended to the longest, the child scope 30 can enter the body cavity. Endoscopic operation can be performed safely without damaging the mucous membrane.
[0038]
【The invention's effect】
According to the present invention, the child scope holder is configured to be extendable in the axial direction, and the extension length of the child scope holder is longer than the length that the tip of the child scope protrudes from the tip of the parent scope when the child scope holder is most contracted. When the child scope holder is extended to the longest, the insertion part of the child scope is completely pulled into the guide channel of the parent scope. The child scope can safely guide and operate the parent scope in the body cavity without damaging the mucosal surface.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of a parent-child endoscope according to an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of a child scope holder according to the embodiment of the present invention.
FIG. 3 is a front view of the child scope holder according to the embodiment of the present invention in a most contracted state.
FIG. 4 is a front view showing a state in which the distal end of the child scope protrudes from the distal end of the parent scope when the child scope holder according to the embodiment of the present invention is most contracted.
FIG. 5 is a front view showing a state in which the child scope holder according to the embodiment of the present invention is most extended.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Parent scope 11 Insertion part 12 Operation part 14 Guide channel 14a Outlet 14b Inlet 20 Eyepiece part 30 Child scope 31 Insertion part 32 Operation part 40 Eyepiece part 50 Child scope holder 51,52 Intermediate cylinder 53 Parent scope connection part 54 Child scope Holding part 57 Tube length lock screw

Claims (4)

A parent-child endoscope is used by inserting a child scope insertion portion into a guide channel provided in the parent scope, and a child scope holder for holding the child scope is attached to the entrance portion of the guide channel of the parent scope. In the mirror
The child scope holder is extendable in the axial direction, and the child scope has a length (A) from which the distal end of the insertion portion of the child scope protrudes from the distal end of the parent scope when the child scope holder is most contracted. A parent-child endoscope characterized in that the extendable length (B) of the holder is increased. The parent-child endoscope according to claim 1, wherein the child scope holder is detachably attached to an inlet portion of a guide channel of the parent scope. The child scope holder includes a plurality of cylindrical bodies that are fitted to each other and are slidably connected in the axial direction, and a lock mechanism that can fix / release the connection portions of the plurality of cylindrical bodies. The parent-child endoscope according to claim 1 or 2. 4. The parent-child endoscope according to claim 3, wherein when the plurality of cylindrical bodies are moved relative to each other in the axial direction, a mechanism for clicking is provided at a plurality of locations in the middle of the movement range.

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