JPH0517049Y2 - - Google Patents

Description

[Detailed description of the invention] [Summary] A support member in which a transducer element for transmitting and receiving ultrasonic waves is mounted and supported, and a hook fitted with this support member are slid by the elastic force of an elastic member. As a result, the semicircular grooves formed at the distal end of the support member and the folded distal end of the hook are brought close together to hold the blood vessel in the circular space formed, and the blood vessel is held in the direction that resists the elastic force. By sliding, both grooves are retracted and separated, and the space between them is opened sufficiently to be wider than the width of the blood vessel, allowing the blood vessel to be removed.There is no risk of damaging the blood vessel when holding or removing the blood vessel, making it easy to remove. It is easy to operate.

[Industrial application field]

The present invention relates to a Doppler probe that uses ultrasonic waves to measure blood flow in blood vessels through the Doppler effect.In particular, it is designed to facilitate the operation of holding and releasing blood vessels in a subject and to simplify the structure. Regarding the ivy Doppler probe.

The ultrasound diagnostic apparatus is configured so that an ultrasound probe is brought into contact with a predetermined location of a subject to be diagnosed, and a diagnostic image of the location is obtained by ultrasound transmitted from the ultrasound probe.

When such an ultrasound probe is a Doppler probe used as a Doppler blood flow meter, the transducer element provided on the Doppler probe is tilted at a predetermined angle with respect to the blood vessel of the subject. Measurements are taken in close proximity to the outer surface.

Although this blood flow measurement may last for a long time,
Even in this case, it is necessary to hold the radiating portion of the transducer element relative to the blood vessel so that the above-mentioned angular relationship does not change.

It is important that such blood vessel holding can be carried out without damaging the blood vessel, and it is also necessary that the blood vessel can be easily held and removed.

In addition, when making a diagnosis, sterilization by disinfection, etc.
Since sterilization is required, if the structure is complex, it is difficult to perform sufficient disinfection treatment. Therefore, it is desirable to have a simple structure suitable for such processing.

[Conventional technology]

The conventional one was a holder as shown in the plan view of FIG.

That is, the holder 10 has two claw parts 11, 11 forming a circular part 16 for holding the blood vessel 6.
and a knob 1 that opens the claws 11, 11.
2, 12, and an insertion portion 13 provided on one side for inserting and holding the deep probe 14, and are integrally molded from an elastic material.

With the above configuration, pinch the knobs 12, 12 in the direction of arrow A to open the claw parts 11, 11, and open the circular part 1.
6, the blood vessel 6 is inserted and held, or removed from the circular portion 16.

A probe 14, which transmits and receives signals through a cable 15, is inserted and held in the insertion part 13, and the tip of the probe 14 is brought close to the outer surface of the blood vessel 6, which is inserted and held in the circular part 16, to perform measurements. It is done.

[Problem that the invention attempts to solve]

In the above-mentioned conventional configuration, there is a limit to the opening width of the claw parts 11, 11 that are opened when inserting and holding the blood vessel 6 or removing it, and it is difficult to make the opening width sufficient so as not to touch the blood vessel 6. It was hot.

For this reason, in order to insert and retain or withdraw the blood vessel 6, it is necessary to deform the blood vessel 6 to match the opening width of the claw portion 11. There is a risk of damaging the blood vessel 6.

Furthermore, since there are protruding parts such as the knob 12, the shape is complicated, and there is also the problem that it is difficult to reliably perform sterilization and sterilization treatments such as disinfection.

[Means for solving problems]

The means of the present invention for solving the above conventional problems will be explained with reference to the principle diagram of FIG.

As shown in the plan view of FIG.
a support member 2 having a semicircular groove 2b and mounted and supported therein so that the end face of the transducer element 1 for transmitting and receiving ultrasonic waves is exposed to the inner surface of the semicircular groove 2b; The guide portion 3c is fitted with the support member 2 and is slidable in the axial direction, so that the semicircular groove 3b formed in the folded-back portion 3a of the tip faces the groove 2b of the support member 2. By energizing the arranged hooks 3 and the hooks 3 fitted to the support member 2, the semicircular grooves 2b and 3b are brought closer together to form the grooves 2b and 3b.
an elastic member 5 for forming a holding part 4 consisting of a circular cavity for holding blood vessels between the two;
By sliding the supporting member 2 and the hook 3 coaxially and moving the elastic member 5 in the compression direction, the grooves 2b and 3b are retracted and separated coaxially, thereby creating an opening necessary for insertion and removal of the blood vessel. It is in the composition that was made to form.

With such a configuration, the above-mentioned conventional problems are solved.

[Effect]

The concave groove at the tip of the support member and the concave groove at the tip of the hook into which the support member and the guide part are slidably fitted are opposed to each other, and the concave grooves are brought close to each other by the elastic force of the elastic member, and the blood vessel Since a circular holding part for holding a blood vessel is formed so as to be in contact with the periphery of the blood vessel, the blood vessel can be held in this holding part.

The spacing between the recessed grooves due to this sliding movement can provide a sufficient opening width, so the blood vessel can be inserted and removed with one touch without any risk of damaging the blood vessel.

The retention of the blood vessel in the inserted state is maintained by the elastic force of the elastic member without causing any fluctuation in the retention posture.
Stable measurements can be performed.

Since the main components are the support member and the hook, the structure is simple and disinfection treatment such as sterilization and sterilization can be performed reliably.

〔Example〕

An embodiment of the Doppler probe of the present invention will be described below in detail with reference to FIG.

In FIG. 2, figure a shows a plan view, figure b shows a side view, and figure c shows a sectional view of the ring portion of the support member.

A transducer element 1 that transmits and receives ultrasonic waves by a signal transmitted within a cord 15 is connected to a through hole 2.
The transducer element 1 has a semicircular groove 2b in the distal end 2a, and the end face of the transducer element 1 can be seen through the through hole 2c inside the groove 2b. support member 2 and support member 2
A hook 3 having a semicircular groove 3b in a folded-back portion 3a of the tip, and an outer circumferential groove on the tip 2a side of the support member 2. A compression coil type spring 21, which is an elastic member, is inserted between a C-shaped ring 20 fitted into the ring 20 and an end face of the guide portion 3c of the hook 3 and fitted into a circumferential groove on the outer periphery 2e of the support member 2. , constitutes a Doppler probe.

The end surfaces of the ring 20 and the guide portion 3c are biased in a direction in which they are repelled from each other by the biasing force in the axial direction of the spring 21, and as a result, the semicircular groove 2b of the support member 2 and the folded portion 3a of the hook 3 are biased. concave groove 3
b are brought close to each other and their ends abut, forming a holding portion 4 consisting of a cavity for holding a blood vessel.

The center of the circular holding part 4 is set in an angular direction that intersects the center C2 of the support member 2 and the hook 3 including the transducer element ₁ by an angle θ, as shown by _C1 in Figure B. ing.

As the material of the support member 2 and the hook 3, it is preferable to use a synthetic resin such as tetrafluoroethylene (trade name: Teflon), which is chemically stable and difficult to deteriorate.
Since the hook 3 requires a certain degree of strength, it is preferable to insert reinforcing metal inside or to make it from stainless steel or the like.

As shown in the cross-sectional view of Figure c, the C-shaped ring 20 fitted into the circumferential groove of the support member 2 can be fitted by expanding the C-shaped opening, and can also be removed if necessary. . Further, a part of the outer periphery of the support member 2 is formed into a flat surface 2d over the entire length, and is designed not to rotate with respect to the guide portion 3c of the hook 3. Concave groove 2 by rotating
This is because the opposing positions of the guide portions 3b and 3b do not match, and for this reason, the fitting hole of the guide portion 3c is formed in a D shape.

In order to hold the blood vessel 6 (shown in FIG. 1) with the above configuration, the hook 3 is attached to the support member 2.
is slid in the direction of arrow _F1 , and the folded portion 3a is retracted and separated from the tip portion 2a of the support member 2. As a result, the abutting portions around both grooves 2b and 3b are opened, and an opening width necessary for inserting the blood vessel 6 is obtained, so that the blood vessel 6 is positioned between the opposing grooves 2b and 3b. If necessary, the groove 2 is brought into contact with one of the grooves, and then the spring 20 gradually returns to the groove 2.
b and 3b are brought closer to each other. That is, the hook 3 is slid in the direction of arrow _F2 . The blood vessel 6 is held by this Doppler probe by again contacting the parts around the grooves 2b and 3b and forming a circular holding part 4.

The supporting member 2 and the guide portion 3c of the hook 3 are C ₂
Since they are fitted on the same axis centered on the grooves 2b and 2b, the sliding movement is naturally coaxial.
3b will also move on the same plane.

Transmission and reception of ultrasonic waves by the transducer element 1 to the blood vessel 6 held in the holding part 4 is performed through the concave groove 2b.
The end face of the transducer element 1 is seen through the through hole 2c. This through hole 2c is filled in advance with a gel for ultrasound, thereby eliminating the presence of an air layer between it and the blood vessel 6, thereby ensuring reliable transmission and reception of ultrasound.

The blood vessel 6 can be easily removed from the Doppler probe by reversing the insertion and holding procedure described above.

FIG. 3 is a plan view showing another embodiment of the present invention.

A circumferential groove 22 is provided on the tip end 2a side of the support member 2.
One end of a compression coil spring 23, which is an elastic member, is fitted into the groove 22 so as to be wound therein, and the other end is brought into contact with the end surface of the guide portion 3c of the hook 3. The other configurations are the same as those shown in FIG. 2 described above.

According to such a configuration, the C-shaped ring described above can be eliminated, and the structure becomes simpler.

[Effect of idea]

As explained in detail above, according to the Doppler probe of this configuration, the opening of the holding portion of the blood vessel can be performed by a simple operation by sliding the support member or the hook, and the opening width can be made sufficiently larger than the blood vessel. Therefore, there is no risk of damaging the blood vessel when it is inserted into or removed from the blood vessel.

Blood flow is always measured at a predetermined angle θ with respect to the blood vessel.
This can be stably maintained by forming the holding portion in a circular shape using an elastic member.

Since the holding portion is formed into a circular shape by advancing and retracting the groove, and the opening moves linearly, the blood vessel can be easily held and removed safely and reliably.

Since the shapes of both the support member and the hook are simpler than conventional ones, sterilization and sterilization by disinfection are ensured, and the practical effects are extremely significant.

[Brief explanation of drawings]

Figure 1 is a principle diagram (plan view) of the present invention, Figure 2 is an embodiment of the present invention, where figure a is a plan view, figure b is a side view, and figure c is a sectional view of the ring portion of the support member. , FIG. 3 shows a plan view of another embodiment of the present invention, and FIG. 4 shows a conventional plan view. In the figure, 1 is a transducer element, 2 is a support member, 3 is a hook, 4 is a holding part, 5 is an elastic member (spring), 6 is a blood vessel, 2a is a tip part, 2
b is a groove, 3a is a folded portion, and 3b is a groove.

Claims (1)

[Claims for Utility Model Registration] The end face of the transducer element 1, which has a semicircular groove 2b at its tip and is used for transmitting and receiving ultrasonic waves, can be seen inside the semicircular groove 2b. A support member 2 is installed and supported inside, and a guide portion 3c is fitted into the support member 2 to be slidable in the axial direction, and a semicircular groove 3b formed in a folded-back portion 3a of the distal end is attached to the support member 2. A hook 3 is arranged and formed to face the groove 2b of No. 2, and the hook 3 is fitted into the support member 2 and is energized to bring the semicircular grooves 2b and 3b closer together to form the groove 2b. , 3b to form a holding part 4 consisting of a circular space for holding blood vessels.
By sliding the supporting member 2 and the hook 3 coaxially and moving the elastic member 5 in the compression direction, the grooves 2b and 3b are retracted and separated coaxially, allowing insertion and removal of the blood vessel. A Doppler probe characterized by forming an aperture necessary for.