JPS62127040A - Grasping forcept - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a grasping forceps that can coagulate while grasping a bleeding part of living tissue, fallopian tubes, vas deferens, etc., and perform treatments such as hemostasis or ligation. .

[Problems to be solved by conventional techniques and inventions] In recent years,
2. Description of the Related Art Endoscopes that allow diagnosis or inspection of the inside of a body cavity by inserting an elongated insertion section are widely used.

This endoscope consists of a flexible endoscope that has a bendable and flexible insertion section that can be inserted into a curved route from the oral cavity, etc., and a puncture hole formed in the abdominal wall etc. that allows the insertion of the endoscope into the target area in a straight line. There is also a rigid endoscope that is inserted into the side.

Incidentally, the endoscope has a gripper as a winding component that is introduced into the body cavity through the forceps channel of the endoscope inserted into the body cavity, and is used to grasp and recover foreign objects such as stones and abnormal tissues in the body cavity. There are forceps.

Conventional grasping forceps can grasp foreign objects and abnormal tissues in body cavities, but they can also be used, for example, to coagulate and stop bleeding while grasping a bleeding part of a living tissue, or to coagulate while grasping fallopian tubes, vas deferens, etc. Treatment such as ligation could not be performed.

2. Description of the Related Art Conventionally, there is a device for grasping tissue with a clip, as shown in Japanese Patent Application Laid-Open No. 156752/1983, as a device for cutting tissue in a body cavity or stopping bleeding. However, this device removes the clip after gripping the object, and there is a problem that the clip remains as a foreign object in the body cavity.

Further, as a conventional method for ligating the fallopian tubes and the like, there is a method of irradiating the fallopian tubes and the like with high-frequency current to coagulate the fallopian tubes and the like. However, in this method, the shock of the frequency current causes a stretch reflex in the patient, which may cause the cauterization of areas other than the targeted fallopian tubes, thereby inflicting damage to them.

There is another method, as shown in Japanese Patent Application Laid-open No. 54-33395, in which the fallopian tube is grasped with forceps and ligated with a loop-shaped wire, but this method does not require manipulation of the forceps and wire. However, there is a problem in that the configuration and operation of the device become complicated.

[Purpose of the Invention] The present invention has been made in view of the above circumstances, and has a simple structure and operation, and is capable of safely coagulating living tissue while gently grasping the bleeding part, fallopian tube, or sperm ring. , stop bleeding,
It is an object of the present invention to provide grasping forceps that can perform procedures such as ligation.

[Means and effects for solving the problems] The grasping forceps according to the present invention (a plurality of forceps members are provided at the tip so as to be openable and closable)
], and is provided with an operation part for opening and closing the forceps part, wherein at least a part of the forceps member is formed of a positive temperature coefficient thermistor as a constant temperature heating element that generates heat by electrical means. be.

That is, the forceps members grasp the bleeding part of the living tissue, the fallopian tube, the vas deferens, etc., the forceps members are heated by the positive temperature coefficient thermistor, and the forceps members heat and coagulate the bleeding part, the fallopian tube, the vas deferens, etc. , to perform procedures such as hemostasis or ligation.

[Embodiments of the invention] Hereinafter, the present invention will be described in detail with reference to the drawings.

1 to 3 relate to one embodiment of the present invention, in which FIG. 1 is a front view of the entire grasping forceps, FIG. 2 is a perspective view of the forceps section, and FIG. 3 is a partial sectional view of the forceps section. .

The grasping forceps 1 is provided with two forceps members 3.4 in the forceps part 2, which is the distal end.
is pivotally supported by the sleeve 6 by the bottle 5, and its tip can be opened and closed. The other end of the forceps member 3°4 is attached to one end of the link plate 9.10 by means of a pin 7.8, and the other end of the forceps member 3.
．． The other end of 10 is attached to a connecting member 12 by a pin 11. The connecting member 12 is connected to the operating handle 13 on the hand side.
and are connected by four operating shafts 14. The operating shaft 14 is inserted into the sheath 15. Sheath 15 may be a hard sheath or a soft sheath.

One of the forceps members 3 and 4 is formed into a plate shape with its tip bent inward, and the other forceps member 4 is formed into an alligator mouth shape. Inside the forceps member 3, as shown in FIG.
tive temperature coeffi-c
icnt ther+n1stor: Hereinafter abbreviated as PTC element.

)21 is buried. Electrodes 122 and 23 are attached to the inner and outer end surfaces of the PTC element 21, respectively.

The PTC element 21 is a thermistor having a positive resistance-temperature characteristic, and the PTC element itself has an automatic temperature control function, and is used as a constant temperature heating element in the present invention. Furthermore, by changing the material composition of the PTC element 21, it is possible to generate heat to a temperature suitable for hemostasis or ligation of the fallopian tube, vas deferens, and the like.

A lead wire 24 such as a coaxial cable is wired in the axial direction within the shaft 14 in the sheath 15, and the PTC element 2
The proximal end of this lead wire 24 is electrically connected to the electrodes 22 and 23 of the gripping forceps 1.
The power supply controller 25 is electrically connected to the power supply control unit 25 that is connected to the power supply controller 25 .

Further, the outer periphery of the forceps member 3.4 is coated with Teflon or the like which does not adhere to tissues within the body cavity.

Next, the operation of the gripping forceps 1 made rigid as described above will be explained.

First, the grasping forceps 1 are inserted into a forceps channel of an endoscope (not shown), and the insertion section of the endoscope is inserted into a body cavity. Next, the lead wire 24 is connected to the power source υ control section 25, and the PTC element 21 is energized. When energized, the PTC element 21 generates heat, and the automatic temperature control function of the PTC element itself maintains a constant temperature suitable for coagulating hemostasis of tissues or coagulating and ligating fallopian tubes, vas deferens, etc.

In this state, while inspecting the inside of the body cavity wA with the endoscope, open and close the operating handle 13 to open and close the forceps member 3 of the grasping forceps 1.
．． 4. Grasp the part where the bleeding is to be stopped, the fallopian tube, the vas deferens, etc. The tissue of the portion gripped by the forceps members 3 and 4 is
It is heated and coagulated by the PTC element 21, and the bleeding is stopped or ligated.

As described above, by using the grasping forceps of the present embodiment, it is possible to coagulate a bleeding part of living tissue, fallopian tubes, vas deferens, etc. while grasping it, and perform treatments such as hemostasis or ligation.

In this embodiment, the P 1'C element 21 is embedded in the forceps member 3, but the entire forceps member may be formed by processing a PTC element. Furthermore, in this embodiment, the PTC element 21
is provided on one of the forceps members, but may be provided on both of the forceps members. Further, the shape of the forceps member is not limited to the shape in this embodiment, and may be formed into any shape depending on the purpose.

In this example, the forceps member 3.4 was opened and closed using a link mechanism, but the forceps member to which elastic force is applied in the opening direction is housed in a pipe, the forceps member is made to protrude from the tip of the pipe, and the pipe is opened and closed. Any UVI closing mechanism may be used, such as opening and closing by axial movement.

[Effects of the Invention] As described above, according to the present invention, a PT as a constant temperature heating element that generates heat by electrical means at least a part of a plurality of forceps members provided at the tip of a grasping forceps so as to be openable and closable.
Since it is formed using a C element, it has a simple configuration and operation, and can safely perform heating and coagulation while grasping bleeding parts of living tissues, fallopian tubes, vas deferens, etc., and can stop bleeding or ligate the body without passing high-frequency current into the body. There is an effect that can be achieved by processing the following.

In addition, by using a PTC element as a heating element,
Since the PTC element itself has an automatic temperature 1i1i function, a temperature control circuit is not required.

[Brief explanation of drawings]

1 to 3 relate to one embodiment of the present invention, in which FIG. 1 is a front view of the entire grasping forceps, FIG. 2 is a perspective view of the forceps section, and FIG. 3 is a partial sectional view of the forceps section. .

Claims (2)

[Claims] (1) In a grasping forceps in which a plurality of forceps members are provided at the tip so as to be freely openable and closable, and an operation section for operating the forceps members to open and close is provided, at least a part of the forceps members generates heat by an electric means at a constant temperature. A gripping forceps characterized in that it is formed of a positive temperature coefficient thermistor as an element. (2) The grasping forceps according to claim 1, wherein the outer surface of the forceps member is coated with a material to which tissue does not adhere.