JPS632020Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to gallstone removal forceps that are suitably used when removing gallstones surgically.

BACKGROUND ART Cholelithiasis is a disease caused by the formation of stones (gallstones) in the biliary tract (gallbladder and bile duct), and is known to be accompanied by severe pain. To surgically remove gallstones, forceps must be inserted into the biliary tract depending on the degree of curvature of the biliary tract. It is difficult to realize gallstone removal forceps that have the ability to remove gallstones. For example, Utility Model Application No. 59-30212 has been proposed, but this proposal involves inserting a cable into the inside of a flexible tube, pushing and pulling the cable with a handle means, and holding the tip of the flexible tube. However, because the flexible tube and cable are too weak to maintain their shape, the operation is not smooth and the tip clamping part cannot be opened and closed smoothly. Currently, there are no removal forceps that are in practical use.

Problems to be Solved by the Invention The present invention was devised by focusing on the above-mentioned points. A clamping member that can be opened and closed is provided at the tip of a flexible long tubular part, and the clamping member is attached to the tip of the flexible long tubular part. By operating a handle member provided at the proximal end of the elongated tubular part, the holding member can be opened and closed to pinch the gallstone, and can be bent or folded as appropriate depending on the affected area during surgery. To provide gallstone removal forceps that can be inserted into the biliary tract to reliably take out and remove gallstones, and are also mechanically reliable.

Means for Solving the Problems The gist of the present invention is to include: a long tubular part that is hollow and flexible; a pair of handle members rotatably attached to the proximal end of the tubular part; A flexible mandrel member slidably housed in a hollow tube part, one end rotatably connected to the proximal end of the mandrel member, and the other end rotatable to the central part of the handle member. A pair of connecting pieces are connected to each other, and the tip part can be opened and closed freely, and the inner part is serrated or uneven with many grooves arranged in parallel, and the central part rotates with respect to each other so that gallstones can be clamped. a pair of clamping members that are freely pivoted; and a pair of connecting pieces that have one end rotatably connected to the proximal end of the clamping member and the other end rotatably connected to the distal end of the mandrel member. A gallstone removal forceps is characterized by comprising:

Embodiment An embodiment of the present invention will be described below based on the accompanying drawings.

In the figure, reference numeral 2 denotes a gallstone removal forceps according to the present invention, which has a long tubular portion 6 with a hollow tube portion 4 inside. The proximal end of the tubular portion 6 becomes a two-pronged base 8, and a pair of handle members 1 are attached to the two-pronged base 8.
0 and 10 are rotatably attached. 12
is a shaft member that is slidably housed in the hollow tube portion 4. 14, 14 are a pair of connecting pieces, one end of which is rotatably connected to the proximal end of the mandrel member 12, and the other end rotatably connected to the central portion of the handle members 10, 10. . 16, 16 is the holding part 18
A pair of clamping members forming a pair of clamping members whose distal ends can be freely opened and closed to clamp gallstones, and are rotatably connected to each other at the center by a shaft 20, and the distal end of the tubular portion 6 It is fixed by the shaft 20 to a cover member having a U-shape on the side projecting from the side. 22, 22 are a pair of connecting pieces, one end of which is rotatably connected to the proximal end of the holding members 16, 16, and the other end rotatably connected to the distal end of the mandrel member 12. . In order to easily hold gallstones, it is preferable that the inner surfaces of the distal ends of the holding members 16, 16 have an uneven shape such as serrations or a plurality of grooves arranged in parallel to prevent gallstones from sliding off.

The gallstone removal forceps 2 are preferably made of a flexible material such as stainless steel, silver, or copper. By providing flexibility in this way,
There is an advantage that the gallstone removal forceps 2 can be bent or bent as appropriate depending on the position and condition of the affected area and used in an optimal shape.

With the above-described configuration, the handle members 10, 1
0 is opened outward, the mandrel member 12 is pushed out in the distal direction inside the hollow tube section 4 via the connecting pieces 14,
22, the proximal ends of the sandwiching members 16, 16 are pushed outward, and at the same time, the sandwiching members 16, 1
The tip of No. 6 is also opened outward (first
figure). Conversely, when the handle members 10, 10 are closed inward, the mandrel member 12 returns to the proximal direction in the hollow tube portion 4 via the connecting pieces 14, 14, and the distal end of the mandrel member 12 returns the holding members 16, 16 inwardly via the connecting pieces 22, 22, and at the same time, the tip portions of the holding members 16, 16 also become inwardly closed (FIG. 2). Therefore, the gallstone removal forceps can be inserted into the biliary tract, the holding members 16, 16 may be opened at the location of the gallstone, and the holding members 16, 16 may then be closed to hold the gallstone and easily remove it from the biliary duct.

Effects of the invention As described above, the present invention provides a handle member in which a holding member that can be opened and closed is provided at the distal end of a long tubular part, and the holding member is provided at the base end of the long tubular part. It can be operated and the holding member can be opened and closed to hold the gallstone, so during surgery, it can be bent or bent as appropriate depending on the affected area and inserted into the biliary tract to ensure removal of the gallstone. It has the practical effects of being removable and mechanically superior.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a front view showing the gripping part in an open state, FIG. 2 is a front view showing the gripping part in a closed state, and FIG. 3 is a front view showing the gripping part in a closed state. FIG. 4 is an enlarged partial front view showing the holding portion, and FIG. 4 is an enlarged partial side view of the holding portion. 2... Gallstone removal forceps, 4... Hollow tube section, 6...
Tubular part, 8... bifurcated base, 10... handle member, 1
2... Mandrel member, 14... Connection piece, 16... Sandwiching member, 18... Sandwiching part, 20... Shaft, 22... Connection piece.

Claims (1)

[Scope of utility model registration request] A long tubular part having a hollow interior and having flexibility, a pair of handle members rotatably attached to the proximal end of the tubular part, and a flexible part slidably housed in the hollow tubular part. a pair of connecting pieces having one end rotatably connected to the proximal end of the mandrel member and the other end rotatably connected to the central portion of the handle member; a pair of clamping members that can be freely opened and closed and have an inner surface that is serrated or has a concavo-convex shape with a large number of grooves arranged in parallel, and that are pivotally connected to each other in the central part so as to be able to clamp gallstones;
A gallstone removal forceps comprising a pair of connecting pieces, one end of which is rotatably connected to the proximal end of the holding member, and the other end of which is rotatably connected to the distal end of the mandrel member.