JPS63252Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a stone crusher for crushing stones that is clogged in the secretory or excretory ducts of organs and allows them to be naturally discharged from the secretory ducts or excretory ducts. be.

(Configuration of conventional examples and their problems) Conventionally, this type of lithotripter for calculus has a plurality of claw-like forceps installed at the tip of a catheter that are opened and closed to grasp and crush the calculus. When grasping the stone, the forceps may damage the wall of the secretory or excretory canal, the forceps may not be strong enough and it takes time to break up the stone, and sometimes the stone cannot be broken at all. It was hot.

(Purpose of the invention) The object of the invention is to provide a lithotripter for stones that can easily and reliably crush stones in a short time without damaging the walls of secretory or excretory ducts.

(Structure of the device) The device uses a drill to break up stones held by a basket and a tool.

(Description of Embodiment) Fig. 1 shows the configuration of an embodiment of the present invention, in which reference numeral 1 denotes a basket formed by bundling both ends of four flexible wires 2 into a basket shape. The binding part at the tip of No. 1 is attached in order to avoid damaging the wall of the secretory or excretory duct of the organ.
It is formed into a ball shape. 3 is a flexible basket shaft with a basket 1 attached to its tip; 4 is a drill shaft with a drill 5 attached to its tip;
When this drill shaft 4 rotates, the drill 5 also rotates. Reference numeral 6 denotes a catheter having a basket shaft 3 and a drill shaft 4 movable in the center line direction; 7, a hole 8 for pressing against a calculus (not shown) is bored in the distal end, and the drill 5 is rotated and moved; A hole 9 for free holding is bored in the center of the rear end,
Further, a hole 10 for movably holding the wire 2 is formed on the outside of the hole 9 so as to be spaced apart from each other.
Refer to Figures a and b], this tool 7 is a catheter 6
attached to the tip of the Reference numeral 11 indicates a separation tube attached to the rear end of the catheter 6 in order to separate and guide the basket shaft 3 and the drill shaft 4, and reference numeral 12 indicates two guide rods 13 protruding from the rear end of the separation tube 11. This basket operating tool has a slider 14 which is slidably attached to the rear end of the basket shaft 3. This basket operating tool 12 has a finger hole 15 for inserting the user's finger into the rear end of the guide rod 13. and are integrally provided on both sides of the slider 14, and when the slider 14 is moved,
The basket 1 is moved in and out of the tip of the tool 7 via the basket shaft 3. Reference numeral 16 denotes a rotating device such as a dental straight handpiece, in which the rear end of the drill shaft 4 is attached to a rotating shaft (not shown). When the rotating device 16 is driven, the drill 5 rotates via the drill shaft 4. At the same time, when the drill shaft 4 is inserted into and taken out from the separation pipe 11, the drill 5 is inserted through the drill shaft 4.
moves inside the tool 7 in the direction of the center line.

In this embodiment configured as described above, first, the tip of the catheter 6 is inserted to the stone clogged in the secretory or excretory canal of an organ, and then the slider 14 is moved toward the tip to remove the catheter 6. After inserting the basket 1 protruding from the tip 7 from between the wall of the secretory or excretory canal and the stone to the depths therein, the basket 1 is moved toward the rear end of the slider 14 relative to the slider 14. The stone is captured in the basket 1, and the stone is held between the basket 1 and the hole 8 of the tool 7. next,
When the drill shaft 4 is pushed into the separating tube 11 and the rotating drill 5 is pressed against the calculus, the calculus is crushed into small pieces by the drill 5.

(Effects of the invention) As explained above, according to the invention, the stone held in the basket and the tool is crushed by the drill that moves almost parallel to the wall of the secretory or excretory duct of the organ. This method has the advantage of not damaging the walls of the secretory or excretory ducts, ensuring that the stones are crushed, and that the time required to crush the stones is shortened.

[Brief explanation of the drawing]

Figure 1 is a configuration diagram of an embodiment of the present invention, Figure 2 a
is a front view of the tool used in one embodiment of the present invention;
Figure b is a sectional view of the tool used in one embodiment of the present invention. 1...Basket, 2...Wire, 3...Basket shaft, 4...Drill shaft, 5...
Drill, 6... Catheter, 7... Tool, 16...
...rotating equipment.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A flexible basket shaft with a basket shaped like a basket made of a plurality of flexible wires attached to its tip, and a drill attached to its tip. The device further includes: a flexible drill shaft driven by a rotating device; a catheter in which the basket shaft and the drill shaft are movably housed; and a tool attached to the distal end of the catheter; A lithotripter for stones, characterized in that the stone held by the tool is crushed by the drill. (2) The wires are separated from each other,
The lithotripter for calculus according to claim (1), which is movably held by the tool.