JPH0627129Y2 - Puncture needle adapter for probe - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention provides a puncture needle adapter for a probe, particularly a probe for observing tomographic images of various organs in a body cavity, and punctures the observed region. The present invention relates to a structure of a puncture needle adapter for guiding a needle or the like.

[Prior Art] An ultrasonic diagnostic apparatus that transmits and receives ultrasonic waves to and from a subject and displays a tomographic image in the subject is well-known, and those that observe the abdomen, heart, etc. from the body surface, vagina, and rectum. Some observe a specific organ or site from inside a body cavity such as the esophagus.

Then, in such an ultrasonic diagnostic apparatus, a puncture needle is inserted into the tissue of the observed site to introduce blood or body fluid to the outside of the body, or forceps is inserted to take out the affected tissue, and the like. If this operation is performed while observing the image displayed on the device, the positioning of the puncture needle and the forceps can be made accurate, and thus, treatment and tissue diagnosis of cancer or the like can be performed.

FIG. 4 shows a state in which a conventional puncture adapter is attached to a probe for body cavity, and this probe 10 is for transvaginal and transrectal purposes in which a transducer 11 is provided at the tip thereof. It is a probe, and a sterilized balloon 12 is covered on the probe 10. Then, the adapter 14 for guiding the puncture needle is placed in the groove 16 formed on the upper surface of the probe 10, and the two rubber bands 18-1 and 18-2 are wound as shown in the figure. The adapter 14 is firmly fixed to the probe 10.

Then, with the adapter 14 attached to the probe 10, the probe 10 is inserted into the body cavity for a predetermined length from the distal end portion, and ultrasonic waves are transmitted and received from the distal end portion by the transducer 11 and the distal end portion is transmitted. A tomographic image of the tissue is displayed as an image. Therefore, the operator introduces a puncture needle or forceps (not shown) from the introduction port 14a, and while watching the displayed image of the inside of the subject, the front end port 14b.
A puncture needle or the like can reach the affected area.

[Problems to be Solved by the Invention] However, since the conventional puncture adapter has to be attached by the rubber band 18 as described above, there is a problem that it takes time and effort to attach it. In addition, since the adapter 14 and the rubber band 18 are separate members, the rubber band 18 is often lost, and there is a problem that it is difficult to handle.

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above conventional problems, and an object thereof is to provide a probe puncture needle adapter that is easy to mount and easy to handle.

[Means for Solving the Problems] In order to achieve the above object, a probe puncture needle adapter according to the present invention includes a guide tube which is arranged at a predetermined position on the outer circumference of a probe and which guides a puncture needle. A pair of clamp arms that grips the probe by rotating around one end and closing the other end, an arm support shaft that supports the center of rotation of each clamp arm, an arm support shaft and a guide tube. A support body that is integrally fixedly supported, and a spring that is hung between the pair of clamp arms to apply a clamping force to the probe when the clamp arms are closed and an arm opening tension when the clamp arms are opened at a predetermined angle, It is characterized by having.

[Operation] According to the above configuration, the guide tube is placed in a predetermined position such as a groove formed on the outer circumference of the probe with the clamp arm opened, and the clamp arm is closed. Then, the pair of clamp arms firmly holds the probe by the biasing force of the spring, and the guide tube is fixed to the probe. On the other hand, when the clamp arm is removed, by opening the clamp arm to a predetermined position, the arm opening tension of the spring acts and the gripped state of the clamp arm can be easily released.

In this way, the guide tube can be attached to the probe with one touch by the clamp arm.

[Embodiment] A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a schematic configuration of a probe puncture needle adapter according to the present invention. A guide tube 14 for guiding a puncture needle or the like is provided on a support 20.

The present invention is characterized by a pair of clamp arms 2 for mounting the guide tube 14 on the probe with one touch.
2-1 and 22-2 are provided, and one end of the clamp arm 22 is rotatably attached to the arm shaft 24 formed on the support body 20. In the embodiment, the clamp arm 22 is formed in a semi-ring shape as shown in the drawing, and has a shape capable of holding a cylindrical probe.

That is, as shown in FIG. 2, a cylindrical grip portion 34 is formed on the probe 32, and the clamp arm 22 is gripped by the grip portion 34. Further, the operation projections 22a-1 and 22a- are provided on the clamp arm 22 on the arm shaft 24 side.
2 is provided, and the clamp arm 22 can be opened and closed by operating the operating protrusion 22a with a finger as shown in FIG. 1 (b).

A spring 26 is stretched between the pair of clamp arms 22-1 and 22-2, and the spring 26 has a ring shape in which a biasing force is applied to the inside, as shown in the embodiment. The spring of The spring 26 is stopped by a stopper 28 at a substantially middle point of the clamp arm 22, and the spring 26 applies a tightening force to the probe when the clamp arm 22 is closed.

In addition, as shown in FIG. 1 (b), the clamp arm 22 has a stopper 28a when the clamp arm 22 is opened at a predetermined angle.
The line 100 connecting the and 28b exceeds the arm shaft 24, and the spring 26 gives the clamp arm 22 its opening tension. In this case, although not shown in the embodiment, a stopper for locking the pair of clamp arms 22 at a predetermined opening angle is provided, thereby ensuring stability when the arms are opened. .

The arm shape of the clamp arm 22 is not limited to the half ring shape and may be a U-shape, which is a shape capable of holding the probe 32. Further, the spring 26 is also the clamp arm 2
A spring having another shape can be used as long as it can apply the probe tightening force and the arm opening tension to 2.

Further, in the embodiment, the tip end of the guide tube 14 is engaged with the probe 32, and the guide tube 14 has the projection 3
0a-shaped (downward) engaging blades 30 are provided, and the probe 32 is provided with a probe 3 as shown in FIG.
An engaging step 36 with which the projection 30a of the engaging wing 30 engages is provided on the flat side surface of the tip of the second blade 2.

The embodiment has the above configuration, and its operation will be described below.

As shown in FIG. 2, the sterilized balloon 12 is covered on the probe 32 for use in the body cavity, and the probe 3 is placed in this state.
The guide tube 14 is attached to the upper surface of the guide tube 2. First, the engagement blade 30 at the tip of the guide tube 14 is fitted into the tip of the probe 32, and the engagement protrusion 30a is engaged with the engagement step 36.
Then, the clamp arm 22 is attached to the grip portion 34 of the probe 32.
Attach to.

That is, FIG. 3 shows the mounting state of the guide tube 14 on the probe 32, and as shown in FIG. 3A, the pair of clamp arms 22 is kept open by the spring 26. However, at the time of mounting, the guide tube 14 is first put in the groove 16 of the probe 32 as shown in FIG.
When the two operation protrusions 22a-1 and 22a-2 are pushed down, the pair of clamp arms 22-1 and 22-2 are pressed.
As shown in FIG. 3C, the probe 32 is gripped by the biasing force of the spring 26 and is firmly fixed to the probe 32.

In this way, the guide tube 14 has the engagement blade 30 at the tip thereof.
The clamp arm 22 allows the probe 32 to be attached to the probe 32 with one touch, and in this state, the probe 32 is inserted into the body cavity. Then, the transducer 11 provided at the tip of the probe 32 displays a tomographic image of the tip organ on the CRT display of the ultrasonic diagnostic apparatus main body.
As shown in FIG. 1A, the operator inserts the puncture needle into the introduction port 1
The puncture needle can be pierced into the affected tissue while observing the tomographic image from the distal end opening 14b by introducing the puncture needle 4a into the guide tube 14. In this way, the puncture needle is accurately punctured into the target affected tissue.

[Advantage of the Invention] As described above, according to the present invention, the guide arm is provided with the clamp arm to which the tightening force and the opening tension are applied by the spring, so that the guide tube can be easily searched with one touch. Can be attached to the tentacle. Therefore, there is an advantage that the mounting operation of the guide tube can be performed in a short time and there is no need to worry about losing parts such as a rubber band as in the related art.

[Brief description of drawings]

FIG. 1 is a diagram showing a structure of a puncture needle adapter for a probe according to the present invention, FIG. 1 (a) is a perspective view, FIG. 1 (b) is a view showing a state in which a clamp arm is opened, and FIG. FIG. 3 is a side view of the probe and guide tube for inside the body cavity, FIG. 3 is a view showing a state in which a clamp arm is attached to the probe, and FIG. 4 is a perspective view showing a configuration of a conventional adapter. 10, 32 ...... Probe 14 ...... Guide tube 16 ...... Groove 18 ...... Rubber band 20 ...... Support 22 ...... Clamp arm 22a ...... Operating protrusion 24 ...... Arm shaft 26 ...... Spring 30 ...... Synthetic wing 36 ... Engagement step.

Claims (1)

[Scope of utility model registration request] 1. A guide tube disposed at a predetermined position on the outer circumference of a probe for guiding a puncture needle, and a pair of clamp arms for gripping the probe by rotating around one end and closing the other end. When,
An arm support shaft that supports the center of rotation of each clamp arm, a support body that integrally and fixedly supports the arm support shaft and the guide tube, and a pair of clamp arms that are suspended between the clamp arms when the clamp arms are closed. A probe puncture needle adapter having: a spring that applies a tightening force to the probe and also provides an arm opening tension when the probe is opened at a predetermined angle.