CN219306765U - Rotating device for intravascular ultrasound equipment and intravascular ultrasound equipment - Google Patents

Abstract

The utility model discloses a rotating device for intravascular ultrasound equipment and intravascular ultrasound equipment, comprising: a rotary driving member including a driving shaft for outputting a rotary motion; a rotating shaft coaxially connected with the driving shaft and used for being connected with the ultrasonic catheter; a first support for mounting the rotary driving member; a second support for mounting the rotation shaft; and the installation datum piece is provided with an installation datum surface, and the first supporting piece and the second supporting piece are both installed on the installation datum surface. Because rotation axis and drive shaft coaxial coupling, and first support piece and second support piece install in same installation reference plane, promptly, first support piece and second support piece's assembly reference are the same, consequently, can effectively ensure the axiality of rotation axis and drive shaft, reduce rotation axis and supersound pipe speed instability because of mechanical assembly deviation leads to, avoid because of the inhomogeneous rotatory image deformation that leads to its acquisition of supersound pipe.

Description

Rotating device for intravascular ultrasound equipment and intravascular ultrasound equipment

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a rotating device for intravascular ultrasound equipment. In addition, the utility model also relates to an intravascular ultrasound device comprising the rotating device for the intravascular ultrasound device.

Background

The intravascular ultrasonic diagnosis system comprises a rotary driving device and an ultrasonic catheter connected with the rotary driving device, wherein the ultrasonic catheter is driven to rotate when the rotary driving device rotates, so that an ultrasonic sensor at the tip of the ultrasonic catheter detects an inner circumference section image of a blood vessel.

However, in the prior art, the rotational movement speed of such a mechanical rotary catheter is poor in stability, and particularly in a curved blood vessel section, uneven rotation of the ultrasonic catheter is liable to generate periodic vibration, causing image deformation.

Therefore, how to avoid causing the speed fluctuation of the ultrasonic catheter, improve the stability of the motion speed of the ultrasonic catheter, and avoid the image deformation acquired by the ultrasonic catheter caused by the uneven rotation of the ultrasonic catheter is a problem to be solved by the people in the art.

Disclosure of Invention

In view of the above, the present utility model is to provide a rotating device for intravascular ultrasound apparatus, which can improve the stability of the movement speed of the ultrasound catheter.

Another object of the present utility model is to provide an intravascular ultrasound device including the above-described rotation device for an intravascular ultrasound device, which has a smooth movement speed of an ultrasound catheter and high accuracy in obtaining a pattern.

In order to achieve the above object, the present utility model provides the following technical solutions:

a rotational device for an intravascular ultrasound device, comprising:

a rotary driving member including a driving shaft for outputting a rotary motion;

a rotating shaft coaxially connected with the driving shaft and used for being connected with an ultrasonic catheter;

a first support for mounting the rotary drive;

a second support for mounting the rotation shaft;

and the installation datum piece is provided with an installation datum surface, and the first supporting piece and the second supporting piece are both installed on the installation datum surface.

Optionally, the rotation shaft is provided with grooves to increase flexibility of the rotation shaft.

Optionally, the rotating shaft is provided with a plurality of grooves at intervals along the axial direction thereof.

Optionally, the groove comprises at least two arc-shaped groove sections arranged along the same circumference of the rotating shaft, and two adjacent arc-shaped groove sections along the axial direction are staggered in the circumferential direction of the rotating shaft.

Optionally, a speed detection device for detecting the rotational speed of the rotating shaft is further included to provide a signal input for speed feedback control of the rotating shaft.

Optionally, the speed detecting device and the rotary driving piece are both connected with a controller, and the controller controls the rotation speed of the rotary driving piece according to the detection signal of the speed detecting device.

Optionally, the speed detection device includes:

the code wheel shaft is respectively and coaxially connected with the driving shaft and the rotating shaft;

the code disc is arranged on the code disc shaft;

and the encoder is arranged on the installation reference piece.

Optionally, the code wheel shaft is mounted on a third support, and the third support is mounted on the mounting reference surface.

Optionally, the third support and the first support are of a unitary structure;

or, the third support and the second support are of an integral structure;

or, the first support, the second support and the third support are of a unitary structure.

Optionally, the code wheel shaft is connected with the driving shaft through a first coupling and is connected with the rotating shaft through a second coupling.

An intravascular ultrasound device comprises an ultrasound catheter and further comprises any rotating device for intravascular ultrasound device, wherein the rotating shaft of the rotating device for intravascular ultrasound device is connected with the ultrasound catheter.

The rotating device for the intravascular ultrasound equipment provided by the utility model works, and the rotating driving piece works to drive the driving shaft to rotate so that the rotating shaft can drive the ultrasound catheter connected with the rotating shaft to rotate, and the ultrasound catheter can acquire the section image of the inner circumference of the blood vessel. The rotating shaft is coaxially connected with the driving shaft, so that direct driving from the driving shaft to the rotating shaft is ensured, and coaxiality between the rotating shaft and the driving shaft is ensured; further, the rotation driving piece is installed on the first supporting piece, the rotation shaft is installed on the second supporting piece, and the first supporting piece and the second supporting piece are both installed on the same installation datum plane, namely, the assembly datum of the first supporting piece and the assembly datum of the second supporting piece are the same, so that the coaxiality of the rotation shaft and the driving shaft is improved, the speed instability of the rotation shaft and the ultrasonic catheter caused by mechanical assembly deviation can be reduced, and the image deformation acquired by the ultrasonic catheter caused by uneven rotation is avoided.

The intravascular ultrasound device provided by the utility model comprises the rotating device for intravascular ultrasound device, and has the beneficial effects.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings may be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 is a front view (partially cut-away) of a rotating device for an intravascular ultrasound device according to an embodiment of the present utility model;

FIG. 2 is a schematic structural view of a rotating device for intravascular ultrasound equipment;

FIG. 3 is a schematic view of the structure of the mounting datum;

fig. 4 is a schematic structural view of the rotary shaft.

Reference numerals in fig. 1 to 4 are as follows:

the device comprises a rotary driving piece 1, a driving shaft 11, a rotary shaft 2, a groove 21, an arc-shaped groove section 211, a first supporting piece 3, a second supporting piece 4, a mounting reference piece 5, a mounting reference surface 51, a speed detecting device 6, a code wheel shaft 61, a code wheel 62, an encoder 63, a third supporting piece 7, a first coupling 8 and a second coupling 9.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The core of the utility model is to provide a rotating device for intravascular ultrasound equipment, which can improve the stability of the movement speed of an ultrasound catheter. Another core of the utility model is to provide an intravascular ultrasound device comprising the rotating device for intravascular ultrasound device, which has stable movement speed of an ultrasound catheter and high accuracy of obtaining patterns.

Referring to fig. 1 and 2, an embodiment of the present utility model provides a rotating device for an intravascular ultrasound device, including a rotation driving member 1, a rotation shaft 2, a first support member 3, a second support member 4, and a mounting reference member 5, the rotation driving member 1 including a driving shaft 11 for outputting a rotational motion; the rotating shaft 2 is used for being connected with an ultrasonic catheter, and the rotating shaft 2 is coaxially connected with the driving shaft 11; the first support 3 is used for mounting the rotary driving member 1; the second support 4 is used for mounting the rotating shaft 2; the mounting reference member 5 is provided with a mounting reference surface 51 (as shown in fig. 3), and the first support member 3 and the second support member 4 are each mounted on the mounting reference surface 51.

When the ultrasonic catheter is in operation, the rotary driving piece 1 works, so that the driving shaft 11 drives the rotary shaft 2 to rotate, and the rotary shaft 2 can drive the ultrasonic catheter connected with the rotary shaft to rotate, so that the ultrasonic catheter can acquire the blood vessel inner circumference section image. Since the rotation shaft 2 is coaxially connected with the driving shaft 11, the direct drive from the driving shaft 11 to the rotation shaft 2 is ensured, which is beneficial to ensuring the coaxiality between the rotation shaft 2 and the driving shaft 11; further, the rotation driving member 1 is mounted on the first supporting member 3, the rotation shaft 2 is mounted on the second supporting member 4, and the first supporting member 3 and the second supporting member 4 are both mounted on the same mounting reference surface 51, that is, the assembly references of the first supporting member 3 and the second supporting member 4 are the same, which is beneficial to further improving the coaxiality of the rotation shaft 2 and the driving shaft 11, so that the speed instability of the rotation shaft 2 and the ultrasonic catheter caused by mechanical assembly deviation can be reduced, and the image deformation obtained by the uneven rotation of the ultrasonic catheter can be avoided.

The specific structure of the rotary driving member 1 according to the embodiment of the present utility model is not limited. In some embodiments, the rotary drive 1 is a motor, for example, a dc brush motor or a stepper motor, or the like.

In addition, the embodiment of the present utility model is not limited to a specific manner in which the first support 3 and the second support 4 are respectively connected to the mounting reference 5. In some embodiments, the first support 3 and the second support 4 are respectively mounted on the mounting reference surface 51 by threads, pins or adhesives, so as to fix the first support 3 and the second support 4 to the mounting reference 5 respectively.

In addition, the specific connection manner of the driving shaft 11 and the first support 3 and the connection manner of the rotation shaft 2 and the second support 4 are not limited in the embodiment of the present utility model. In some embodiments, the drive shaft 11 is rotatably connected to the first support 3 by means of bearings or bushings; the rotation shaft 2 is rotatably connected to the second support 4 through a bearing or a bushing.

Referring to fig. 4, in order to further enhance the rotational stability of the ultrasound catheter, in some embodiments, the rotation shaft 2 is provided with grooves 21 to enhance the flexibility of the rotation shaft 2. That is, the embodiment of the utility model improves the flexibility of the rotating shaft 2 and reduces the torsional rigidity of the rotating shaft 2 by providing the groove 21 on the rotating shaft 2, so that the pure rigid hard contact between the rotating shaft 2 and the ultrasonic catheter can be avoided, the assembly deviation between the rotating shaft 2 and the ultrasonic catheter can be eliminated, the speed instability of the ultrasonic catheter caused by the assembly deviation between the rotating shaft 2 and the ultrasonic catheter can be reduced, and the uniform rotation of the ultrasonic catheter can be ensured.

The specific shape and the installation position of the groove 21 are not particularly limited in the embodiment of the present utility model, as long as the rigidity of the rotation shaft 2 can be reduced and the flexibility of the rotation shaft 2 can be improved.

With continued reference to fig. 4, in some embodiments, the rotating shaft 2 is provided with a plurality of grooves 21 at intervals along an axial direction thereof. That is, the embodiment of the present utility model improves the flexibility of the rotating shaft 2 by providing the plurality of grooves 21 on the rotating shaft 2, utilizing the coaction of the plurality of grooves 21, which is advantageous in ensuring the uniformity of the strength of the rotating shaft 2 while weakening the torsional rigidity of the rotating shaft 2.

Further, with continued reference to fig. 4, in some embodiments, the groove 21 includes at least two arcuate groove segments 211 disposed along the same circumference of the rotating shaft 2, with axially adjacent arcuate groove segments 211 being staggered in the circumferential direction of the rotating shaft 2. That is, the grooves 21 are distributed in more than two arcuate groove sections 211 along the same circumferential direction of the rotary shaft 2, which is advantageous in ensuring the structural strength of the rotary shaft 2. For example, in some embodiments, two arcuate slot segments 211 are disposed along the same circumferential direction of the rotating shaft 2, the two arcuate slot segments 211 being disposed symmetrically about an axial cross-section of the rotating shaft 2.

In addition, the two axially adjacent arc-shaped groove sections 211 are staggered in the circumferential direction of the rotating shaft 2, so that the torsional rigidity of the rotating shaft 2 can be weakened along all directions of the rotating shaft 2, assembly deviation between the rotating shaft 2 and the ultrasonic catheter can be eliminated along all directions, and the rotating stability of the ultrasonic catheter can be improved.

To further improve the smoothness of rotation of the rotating shaft 2, please refer to fig. 2, in some embodiments, the rotating device for an intravascular ultrasound device further comprises a speed detecting device 6 for detecting the rotational speed of the rotating shaft 2, so as to provide a signal input for the speed feedback control of the rotating shaft 2. That is, when the rotation shaft 2 rotates, the speed detecting device 6 is used for detecting the rotation speed of the rotation shaft 2 in real time, so as to realize the speed feedback control of the rotation shaft 2, thereby improving the capability of the rotating device for the intravascular ultrasound device to resist external disturbance and improving the speed stability performance of the rotation motion of the rotation shaft 2 under the disturbance of external load.

In some embodiments, the speed detecting device 6 and the rotary driving member 1 are both connected to a controller, and the controller controls the rotary driving member 1 to adjust the rotation speed according to the detection signal of the speed detecting device 6. In some embodiments, the rotary drive 1 is a motor; the controller is an integrated circuit, and the integrated circuit comprises a speed acquisition module, a PID (proportion integration differentiation) control regulation module and a motor drive module, and when the speed detection device 6 is in operation, pulse signals acquired by the speed detection device are transmitted to the speed acquisition module, are processed by the PID regulation module, and the motor drive module controls the rotating speed of the rotary driving piece 1, so that the speed feedback control of the rotary shaft 2 is realized.

The specific configuration of the speed detecting device 6 is not limited in the embodiment of the present utility model, as long as it can detect the speed of the rotating shaft 2.

As shown in fig. 1 and 2, in some embodiments, the speed detecting device 6 includes a code wheel shaft 61, a code wheel 62, and an encoder 63, the code wheel shaft 61 being coaxially connected with the drive shaft 11 and the rotation shaft 2, respectively; the code wheel 62 is mounted on the code wheel shaft 61; the encoder 63 is mounted to the mounting reference 5. When the driving shaft 11 rotates, the code wheel shaft 61 and the rotating shaft 2 are driven to synchronously rotate, and as the code wheel shaft 61 is respectively and coaxially connected with the driving shaft 11 and the rotating shaft 2, direct driving from the driving shaft 11 to the rotating shaft 2 is ensured, and coaxiality between the rotating shaft 2 and the driving shaft 11 is ensured. In addition, when the code wheel shaft 61 rotates, the code wheel 62 is driven to rotate, and the rotation speed of the rotating shaft 2 can be detected by matching with the encoder 63.

The specific mounting manner of the code wheel 62 and the encoder 63 is not limited in the embodiment of the present utility model, as long as the mounting of the code wheel 62 and the encoder 63 can be realized. In some embodiments, the code wheel 62 is circumferentially mated to the code wheel shaft 61 and secured by threads or an adhesive. In some embodiments, the encoder 63 is connected to the mounting datum 5 by threads or an adhesive.

In addition, the speed detecting device 6 is not limited to the above implementation, and in other embodiments, the speed detecting device 6 may also use a rotary transformer, a photoelectric sensor, a pulse encoder 63, a circular magnetic scale, etc. to detect the rotation speed of the rotating shaft 2.

To further improve the mounting accuracy of the code wheel shaft 61, the code wheel shaft 61 is prevented from being not coaxial with the driving shaft 11 and the rotation shaft 2 due to assembly deviation, and as shown in fig. 1 and 2, in some embodiments, the code wheel shaft 61 is mounted to the third support 7, and the third support 7 is mounted to the mounting reference surface 51. That is, in the embodiment of the present utility model, the first support 3, the second support 4 and the third support 7 are all mounted on the same mounting reference surface 51, that is, the mounting references of the first support 3, the second support 4 and the third support 7 are the same, which is advantageous for improving the coaxiality of the driving shaft 11, the code wheel shaft 61 and the rotating shaft 2, so that the speed instability of the rotating shaft 2 and the ultrasonic catheter due to the mechanical assembly deviation can be reduced.

Further, please continue to refer to fig. 2, in some embodiments, the third support 7 and the first support 3 are integrally formed. That is, in the embodiment of the present utility model, the third supporting member 7 is integrally formed with the first supporting member 3, which is advantageous in ensuring the processing precision and the relative positional precision between the third supporting member 7 and the first supporting member 3, and further improving the coaxiality between the code wheel shaft 61 and the drive shaft 11.

In other embodiments, the third support 7 is of unitary construction with the second support 4. That is, the third support 7 is integrally formed with the second support 4, which is advantageous in ensuring the machining accuracy and the relative positional accuracy between the third support 7 and the second support 4, further improving the coaxiality between the code wheel shaft 61 and the rotary shaft 2.

In other embodiments, the first support 3, the second support 4 and the third support 7 are of unitary construction. That is, the first support 3, the second support 4, and the third support 7 are integrally formed, which is advantageous in ensuring the processing precision and the relative positional precision between the first support 3, the second support 4, and the third support 7, and further improving the coaxiality between the drive shaft 11, the code wheel shaft 61, and the rotary shaft 2.

As shown in fig. 1 and 2, considering the convenience of the coupling of the code wheel shaft 61 to the driving shaft 11 and the rotating shaft 2, respectively, in some embodiments, the code wheel shaft 61 is coupled to the driving shaft 11 through the first coupling 8, and the code wheel shaft 61 is coupled to the rotating shaft 2 through the second coupling 9. The connection is convenient and the implementation is convenient.

In addition to the rotating device for intravascular ultrasound equipment, the present utility model further provides intravascular ultrasound equipment including the rotating device for intravascular ultrasound equipment disclosed in the above embodiment, and the intravascular ultrasound equipment further includes an ultrasound catheter, wherein the ultrasound catheter is connected with the rotating shaft 2 of the rotating device for intravascular ultrasound equipment, and the structure of other parts of the rotating device for intravascular ultrasound equipment is referred to the prior art, and is not repeated herein.

That is, the embodiment of the present utility model focuses on: by adopting the rotating device for intravascular ultrasound equipment, the rotating shaft 2 of the rotating device for intravascular ultrasound equipment is coaxially connected with the driving shaft 11, the first supporting piece 3 for installing the rotary driving piece 1 and the second supporting piece 4 for installing the rotating shaft 2 are installed on the same installation datum plane 51, that is, the assembly datum of the first supporting piece 3 and the assembly datum of the second supporting piece 4 are the same, the coaxiality of the rotating shaft 2 and the driving shaft 11 can be effectively ensured, the speed instability of the rotating shaft 2 and the ultrasonic catheter caused by mechanical assembly deviation is reduced, and the image deformation acquired by the ultrasonic catheter caused by uneven rotation is avoided.

It should also be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by a difference from other embodiments, and identical and similar parts between the embodiments are referred to each other.

The rotating device for the intravascular ultrasound device and the intravascular ultrasound device provided by the utility model are described in detail above. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (11)

1. A rotating device for an intravascular ultrasound device, comprising:

a rotary drive (1) comprising a drive shaft (11) for outputting a rotary motion;

a rotation shaft (2) coaxially connected to the drive shaft (11) and adapted to be connected to an ultrasonic catheter;

a first support (3) for mounting the rotary drive (1);

a second support (4) for mounting the rotating shaft (2);

and the installation reference piece (5) is provided with an installation reference surface (51), and the first support piece (3) and the second support piece (4) are both installed on the installation reference surface (51).

2. The rotating device for intravascular ultrasound equipment according to claim 1, wherein the rotating shaft (2) is provided with grooves (21) to increase the flexibility of the rotating shaft (2).

3. The rotating device for intravascular ultrasound equipment according to claim 2, characterized in that the rotating shaft (2) is provided with a number of grooves (21) at intervals along its axial direction.

4. A rotation device for an intravascular ultrasound device according to claim 3, characterized in that the groove (21) comprises at least two arcuate groove segments (211) arranged along the same circumference of the rotation shaft (2), the two axially adjacent arcuate groove segments (211) being arranged offset in the circumferential direction of the rotation shaft (2).

5. The rotational device for an intravascular ultrasound device according to any one of claims 1-4, further comprising a speed detection means (6) for detecting a rotational speed of the rotational shaft (2) to provide a signal input for a speed feedback control of the rotational shaft (2).

6. The rotating device for intravascular ultrasound equipment according to claim 5, wherein the speed detecting device (6) and the rotary driving member (1) are both connected to a controller, and the controller controls the rotational speed of the rotary driving member (1) according to a detection signal of the speed detecting device (6).

7. The rotating device for an intravascular ultrasound device according to claim 5, wherein the speed detecting means (6) comprises:

a code wheel shaft (61) coaxially connected to the drive shaft (11) and the rotary shaft (2), respectively;

a code wheel (62) mounted on the code wheel shaft (61);

an encoder (63) mounted to the mounting reference member (5).

8. The rotating device for intravascular ultrasound equipment according to claim 7, wherein the code wheel shaft (61) is mounted to a third support (7), the third support (7) being mounted to the mounting reference surface (51).

9. The rotating device for an intravascular ultrasound device according to claim 8, wherein the third support (7) is of unitary construction with the first support (3);

or the third supporting piece (7) and the second supporting piece (4) are of an integrated structure;

or, the first support (3), the second support (4) and the third support (7) are of a unitary structure.

10. The rotating device for intravascular ultrasound equipment according to claim 7, wherein the code wheel shaft (61) is connected to the drive shaft (11) by a first coupling (8) and to the rotation shaft (2) by a second coupling (9).

11. An intravascular ultrasound device comprising an ultrasound catheter, characterized in that it further comprises a rotation means for an intravascular ultrasound device according to any one of claims 1-10, said rotation shaft (2) of said rotation means for an intravascular ultrasound device being connected to said ultrasound catheter.

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