JP2512570Y2 - Filamentous extractor - Google Patents

Description

[Technical Field] The present invention relates to a heartworm (silkworm) parasitic on body tissue, blood, tissue fluid, etc., such as filariasis, filariasis, etc. The present invention relates to a tool for removing a filamentous worm suitable for removing a filamentous heartworm without performing a thoracotomy.

BACKGROUND ART Filariasis and filariasis are parasites of heartworm in body tissues, blood, or tissue fluid, and are found in tropical and subtropical regions. Living heartworms have little tissue reaction and are asymptomatic, but fail after adult death, resulting in granulomatous inflammation and permanent fibrosis. This results in dense hyaline scarring of the subcutaneous tissue, resulting in lymphatic vessel obstruction, and the most serious consequence is elephantiasis or skin thickening, a type of chronic fibrosis of the affected tissue.

In order to treat such filariasis, conventionally, an openable forceps nail is inserted into a blood vessel, and a filamentous worm is grasped and extracted by the forceps nail.

FIG. 4 is a view for explaining an example of a conventional filamentous worm extraction tool, in which 10 is a forceps part which can be opened and closed, 11 is a curved part, and 12 is a curved part.
Is a soft shaft, 13 is a rigid shaft, 14 is a sleeve, 15 is a lock screw, 16 is a bending part bending / extending knob, 17 is a locking screw, 18 is a forceps claw opening / closing knob, 19 is a grip ring, and the forceps 10 to the rigid shaft 13 are inserted. The part I and the sleeve 14 to the grip ring 19 form an operating part II. Further, the forceps claw 10 is composed of a fixed claw 10a and a movable claw 10b, and by operating the grip ring 19 in the direction of the arrow, the movable claw 10b is moved to open and close between the fixed claw 10a and the movable claw 10b, During these periods, the filamentous worms parasitic on the blood vessels are grabbed and taken out.

In the natural state in which the knob 16 and the stopper in the knob are not operated, the forceps claws 10a and 10b are in a lightly closed state and the bending portion 11 is in a substantially straight state. Forceps claw 10a,
The opening and closing of 10b and the bending and stretching of the bending portion 11 can be independently operated regardless of their respective states. A screw type stopper is attached to each of the knobs 18 and 16, and by tightening this screw, the forceps claws 10a and 10b can be held in an open / closed state and the bending portion 11 can be kept in a bent state at any position. Can be done.

Thus, when the filamentous worm in the blood is taken out using the extractor as described above, (1) a method based on feeling, (2) a method using fluoroscopic X-ray, (3) an echo device (ultrasound diagnostic device) However, the method according to the feeling of (1) requires a considerable amount of skill and is inefficient because it concentrates nerves and its efficiency greatly varies depending on ambient noise. Also, (2)
The method using the fluoroscopic X-ray is very efficient because the extraction tool can be operated while observing the condition of the filamentous insect or the forceps nail, but it was dangerous because the radiation dose was large. Further, in the method (3) using the echo device, the image is not clear because the filamentous worm is in the blood, and it requires considerable skill to accurately grasp the filamentous worm. Furthermore, the methods according to the above (2) and (3) have the drawbacks that the apparatus becomes large and the cost is high.

The present invention has been made in view of the above-mentioned circumstances, and in particular, it is more compact and low in size by incorporating an image scope in the forceps nail of a removal tool so that a filamentous worm can be removed while viewing it. The object of the present invention is to provide an extractor that can remove filamentous worms in blood efficiently at a cost.

To achieve the above object, the present invention has (1) a forceps claw that can be opened and closed at one end and a forceps claw open / close operation unit that opens and closes the forceps claw at the other end, The forceps nail is inserted into a blood vessel, and the forceps nail opening / closing operation section is operated to grasp the filamentous insect parasitizing in the blood vessel by the forceps nail and remove the filamentous insect. Has a cavity formed of a transparent member, and a fiberscope is stored in the cavity, and the forceps claw opening / closing operation section is operated while observing the filamentous insects outside the cavity through the fiberscope. It is characterized in that the filamentous insect is grasped with the forceps claw and extracted.
(2) The fiberscope has an image guide and a light guide, and by illuminating with the light guide, white filamentous insects in red blood are clearly projected, (3) With the fiberscope To look at the radial direction of the blood vessel (direction perpendicular to the direction of intrusion of the forceps nail), (4), or to look at the axial direction of the blood vessel (direction of intrusion of the forceps nail), (5), or
Two sets of the fiberscopes are provided, one of which is used to see the direction perpendicular to the forceps claw intrusion direction and the other of which the forceps claw intrusion direction is viewed, so that both fiberscopes can be used at the same time or switched. What you did,
(6) The entire forceps nail on the side where the fiberscope is stored is made of a transparent material member, or
(7) A part of the front of the forceps claw is made of a transparent member, and the fiberscope is housed in the transparent member.
Various improvements are conceivable in regard to the structure of the forceps claw, the location of the fiberscope, the number of fiberscopes, and the like. An embodiment of the present invention will be described below.

FIG. 1 is a view showing a main part of a filamentous worm extraction tool according to the present invention. In the figure, 10a is a fixed forceps claw, 10b is a movable forceps claw, and as described above, these fixed forceps claw 10a and movable forceps claw are used. The forceps claw 10 composed of 10b is inserted into the blood vessel where the filamentous insect is parasitic, and the movable forceps claw 10b is moved in the direction of the arrow C by the operating portion to open and close the forceps claw 10a and 10b. A filamentous insect is sandwiched in between and taken out. Thus, in the present invention, in the extraction tool as described above, a space is formed by the transparent body member 10a 'on the side of the fixed forceps claw 10a, and the fiberscope 1 is housed in the space by the transparent body member. Then
The forceps nail is operated while observing the presence of the filamentous insect with this fiberscope, and the filamentous insect is sandwiched between the forceps nails 10a and 10b and taken out. In the figure, the fixed forceps claw 10a is shown.
An example is shown in which the transparent member 10a 'is separately provided at the tip of the fiberscope 1 and the fiberscope 1 is housed in the transparent member 10a'. However, the entire fixing forceps claw 10a is made of a transparent member to form a portion 10a and a portion 10a '. The fiberscope may be integrally formed, or the fiberscope may be directly housed in the 10a portion without providing the 10a 'portion. Further, in the figure, an example in which the fiberscope is used to view the B direction perpendicular to the invasion direction A of the forceps claw 10, in other words, the radial direction of the blood vessel is shown. You may want to look at it, and further,
It is also possible to provide two fiberscopes, one for viewing the A direction and the other for viewing the B direction, both of them at the same time, or both of them can be switched so that they can be viewed alternately on a single display. As is well known, the fiberscope is most simply composed of an image guide 2 and a light guide 3 as shown in a sectional view in FIG.
The diameter D is about 0.5 mmφ to 1.0 mmφ, and
Since the diameter D ′ of the above-mentioned forceps claw 10 is about 2.5 mmφ,
It is quite possible to store the fiberscope in the forceps nail. As described above, when using a fiberscope and illuminating with a light guide, the outside of the transparent member can be seen from the inside of the transparent member through the transparent member. At this time, in particular, blood is red. Since the filamentous worm is white, when the filamentous worm adheres to the outside of the transparent member, the image can be reliably caught, and the filamentous worm can be removed efficiently. In addition,
When the image guide surface (lens surface) of the fiberscope is configured to be exposed and the image guide surface is directly put into blood, the image guide surface (and of course the ride guide surface) is contaminated with blood, The presence of filamentous insects cannot be accurately projected.

FIG. 3 is an external view showing an example of an image scope suitable for use with the fiber scope as described above. In the figure, 2 is the above image guide, 3 is a light guide,
The light amount of the light guide 3 is adjusted by the light controller knob 4, and the image sent from the image guide 2 is displayed on the display 5.

Effects As is clear from the above description, according to the present invention, a small and inexpensive structure can reliably and safely take out filamentous insects parasitic in blood etc. without requiring special skill. You can

[Brief description of drawings]

FIG. 1 is a configuration diagram of a main part for explaining an example of a filamentousworm extracting tool according to the present invention, FIG. 2 is a view showing an example of a cross section of the fiber scope shown in FIG. 1, and FIG. The figure which shows an example of the image scope used for implementation of this invention, 4th
The figure is a figure for demonstrating an example of the conventional extraction tool. 1 ... Fiberscope, 2 ... Image guide, 3
…… Light guide, 4 …… Light control, 5 ……
Display, 10 …… forceps claw, 10a …… fixed claw, 10b ……
Movable claw, 10a '... Transparent member.

Claims (1)

(57) [Scope of utility model registration request] 1. A forceps claw that can be opened and closed at one end, and a forceps claw opening / closing operation part that opens and closes the forceps claw at the other end, wherein the forceps claw is inserted into a blood vessel, and In a filamentous worm extraction tool that operates a forceps claw opening / closing operation section to grasp a filamentous worm parasitic on a blood vessel with the forceps claw, one of the opening / closing claws has a hollow portion made of a transparent member. Then, a fiberscope is housed in the cavity, and the forceps claw open / close operation unit is operated while observing the filamentous insect outside the cavity through the fiberscope to grasp the filamentous insect with the forceps nail. A tool for removing filamentous insects, which is characterized in that it is extracted with.