JPH0520714U - Connection structure of surgical pinsets - Google Patents

Abstract

(57) [Summary] [Purpose] Surgery that can be easily attached to and detached from a socket, and when surgical tweezers are used, it is firmly connected and fixed to the socket, and there is no risk of the insertion becoming loose or coming off. A tweezers connecting structure is provided. [Structure] A concave groove 17 provided on an outer periphery of a connector 12 of a surgical tweezers 10 and a sleeve 18 forming a fitting concave portion for fitting the connector 12 on a tip end surface of a socket 14.
A through hole 19 formed in the sleeve 18, a steel ball 20 housed in the through hole 19;
And a leaf spring 22 that urges the steel ball 20 inward in the radial direction to cause a part of the steel ball 20 to project from the inner peripheral surface of the sleeve 18.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a connection structure for connecting surgical tweezers to a socket attached to an electric cord so that a high frequency current is passed through the surgical tweezers.

[0002]

[Prior Art]

 Conventionally, surgical tweezers have been used to stop bleeding of cut thin blood vessels in, for example, brain surgery, and sandwich the blood vessel with the tweezers and apply a high-frequency current to the tweezers to burn the blood vessel and stop the bleeding. is there. As shown in FIG. 4, the conventional external tweezers 30 is composed of tweezers 31 and a connector portion 32, and is sterilized and cleaned, and a socket 34 is provided at the tip of the electric cord 33. The connector pin 36 is used by inserting it into the insertion hole 35 of FIG.

[0003]

[Problems to be solved by the device]

 However, since the conventional surgical tweezers 30 is fixed to the socket 34 only by inserting the connector pin 36 into the insertion hole 35, the connection is not stable, and therefore, the insertion of the connector pin 35 is loose or comes off during use. There is a problem that careful handling is required because there is a possibility that

Therefore, the present invention has been made in order to solve the above problems, and it is a connecting structure for surgical tweezers that can be easily attached and detached and that there is no fear that the insertion will loosen or come off after attachment. The purpose is to provide.

[0005]

[Means for Solving the Problems]

 The present invention has been made in view of the above object, and a concave groove is provided at a predetermined position in the circumferential direction on the outer periphery of the connector of the surgical tweezers, and the socket attached to the electric cord projects from the tip thereof. A sleeve is provided which forms a fitting recess for inserting the connector, and the sleeve has a through hole formed at a predetermined position in the circumferential direction thereof, a ball accommodated in the through hole, a through hole and a ball. And a ring-shaped leaf spring that is attached to the outer circumference of the sleeve to cover the ball and engages the ball with the groove of the connector by the bias of the leaf spring when the connector is inserted into the fitting recess. The outline is the connection structure of the surgical tweezers to the socket.

Here, when the connector pin is inserted into the socket and the end face of the connector and the end face of the socket come into contact with each other, the recessed groove provided on the outer periphery of the connector is located at the position of the through hole of the sleeve. The predetermined position in the circumferential direction may be formed so as to coincide with the position, and at least a part thereof may coincide with the through hole, and thus may be formed, for example, over the entire circumference of the connector.

Further, the through hole is formed so that the diameter of the ball to be housed is reduced toward the inner peripheral surface of the sleeve so as not to fall off, and the inner peripheral surface of the sleeve opens in a shape smaller than the cross section of the ball.

Further, the leaf spring is a ring-shaped member with a part cut away, and is attached to the outer circumference of the sleeve, and acts to shrink the widened notch, so that the ring spring is attached inward in the radial direction. It creates power.

[0009]

[Action]

 In the surgical tweezers connection structure of the present invention, when the connector is inserted into the sleeve to insert the connector pin into the insertion hole of the socket, a ball partially protruding from the inner peripheral surface of the sleeve acts on the biasing force of the leaf spring. Riding against the outer peripheral surface of the connector, move the outer peripheral surface of the connector. When the connector pin is inserted into the insertion hole and the end faces of the connector and socket abut, the ball fits into the groove of the connector due to the biasing force of the leaf spring, which facilitates socket and surgical tweezers. And it is firmly connected and fixed. Further, when the surgical tweezers are pulled out, the ball easily rides on the outer peripheral surface of the connector against the biasing force of the leaf spring and moves, whereby the external tweezers can be easily removed from the socket. I can.

[0010]

【Example】

 Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

As shown in FIGS. 1 to 3, the surgical tweezers connection structure of the present embodiment attaches a surgical tweezers 10 composed of a tweezers 11 and a connector 12 to the tip of an electric cord 13. A high frequency current is supplied to the tweezers 11 via a connector pin 16 which is connected to the socket 14 and is inserted into the insertion hole 15 of the socket 14, and is used for processing such as hemostasis of a blood vessel that is pinched by the tweezers 11.

In the connection structure, the groove 12 having an arcuate cross section is provided on the outer circumference of the connector 12, and the connector 12 is attached to the outer circumference of the socket 14 so as to project from the end face of the socket 14. And a sleeve 18 that forms a fitting recessed portion for forming the fitting recessed portion. The sleeve 18 further includes three through holes 19 that are provided at predetermined positions (described later) related to the recessed groove 17 at equal intervals in the circumferential direction, It is provided with three steel balls 20 housed therein and a leaf spring 22 which covers the through holes 19 and the steel balls 20 and is fitted in a fitting groove 21 on the outer circumference of the sleeve 18. Here, the through hole 19 is opened on the outer peripheral surface of the sleeve 18 with a diameter larger than the diameter of the steel ball 20, has a tapered surface, and is reduced in diameter toward the inner peripheral surface of the sleeve 18, and thus the sleeve 18 The steel balls 20 that are opened and accommodated in the inner peripheral surface of the steel balls 20 with a diameter smaller than the diameter of the steel balls 20 do not fall off to the inner peripheral surface side. Further, the steel ball 20 has a diameter slightly larger than the thickness of the sleeve 18 at the portion where the through hole 19 is formed, and therefore is urged by the leaf spring 22 so that a part of the inner surface of the sleeve 18 is urged. More prominent. Further, the leaf spring 22 is a ring-shaped member, a part of which is cut, and which generates a biasing force inward in the radial direction in an attempt to reduce the cut portion by expanding the cut portion, and is attached to the outer peripheral surface of the sleeve 18. The steel balls 20 inward.

Then, in order to connect the surgical tweezers 10 to the socket 14 by the connection structure, the connector 12 is inserted into the sleeve 18 of the socket 14. At this time, the steel ball 20 rides on the outer periphery of the connector 12 against the urging force of the leaf spring 22, and the rotation thereof smoothly moves on the outer peripheral surface, and at the same time, the concave groove is formed from the end surface of the connector 12. Since the distance to 17 and the distance from the end face of the socket 14 to the through hole 19 are set to be equal, when the connector pin 16 is inserted into the insertion hole 15 and the end faces of the connector 12 and the socket 14 come into contact with each other, The position of the recessed groove 17 and the position of the through hole 19 are matched, and the steel ball 20 is dropped into the recessed groove 17 by the biasing force of the leaf spring 22 to firmly connect and fix the surgical tweezers 10 and the socket 14. Will be touched. To remove the surgical tweezers 10 from the socket 14 after the procedure with the surgical tweezers 10 is completed, pull out the surgical tweezers 10 from the sleeve 18, and the steel ball 20 resists the bias of the leaf spring 22 and the connector. The surgical tweezers 10 can be easily removed by riding on the outer circumference of 12 and smoothly moving the outer circumferential surface by the rotation.

[0014]

[Effect of the device]

 As described above, the connection structure of the surgical tweezers of the present invention comprises the concave groove provided in the connector, the sleeve provided in the socket, the through hole provided in the sleeve, the ball and the leaf spring, and The surgical tweezers and socket can be easily attached and detached by inserting it into the sleeve and pulling it out from the sleeve, and when connecting the surgical tweezers to the socket, only connect the connector pin. Unlike the above case, the ball provided on the sleeve has a special effect of engaging the concave groove of the connector and firmly fixing the connection, and facilitating the handling of the surgical tweezers.

[Brief description of drawings]

FIG. 1 is a perspective view showing a structure of a connection structure for surgical tweezers of the present invention.

FIG. 2 is an enlarged side view of a connecting portion in FIG.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a perspective view showing a configuration of a connection structure of a conventional surgical tweezers.

[Explanation of symbols]

 10 surgical tweezers 11 tweezers 12 connector 14 socket 17 concave groove 18 sleeve 19 through hole 20 steel ball 22 leaf spring

Claims (1)

[Scope of utility model registration request] 1. A connection structure for connecting a connector of a surgical tweezers to a socket for applying a high frequency current to the surgical tweezers to use the same. At the same time, the sleeve is provided with a sleeve for forming a fitting recess for fitting with the connector at the socket tip, and the sleeve has a through hole formed at a predetermined position in the circumferential direction of the sleeve and the through hole. The connector includes the ball accommodated therein and a leaf spring which covers the ball and is attached to the outer circumference of the sleeve, and biases the ball inward to project a part of the ball from the inner peripheral surface of the sleeve. When inserted in the mating recess,
A connecting structure for surgical tweezers, wherein the ball is engaged with a groove of the connector portion by biasing a leaf spring.