CN218922638U - Pulling and inserting mechanism, retracting device and intravascular ultrasonic diagnosis system - Google Patents

Abstract

The application relates to a pulling and inserting mechanism, a retracting device and an intravascular ultrasound diagnostic system, wherein the pulling and inserting mechanism comprises a base, a first tilting rod and a first elastic piece, wherein a through hole for a diagnostic catheter to penetrate is formed in the base along a first direction; the two ends of the first tilting rod are respectively provided with a first locking part and a first pressing part, the first locking part extends towards the through hole and can be propped against the diagnosis catheter, the first tilting rod is rotationally connected with the base at a first rotating part, and the first rotating part is positioned between the first pressing part and the first locking part; one end of the first elastic piece is abutted to the base, the other end of the first elastic piece is abutted to the first pressing portion, and when the first elastic piece is in a natural state, the first elastic piece pushes the first pressing portion to rotate in a direction away from the base. The pulling and inserting mechanism can realize automatic locking and one-key unlocking of the diagnosis catheter.

Description

Pulling and inserting mechanism, retracting device and intravascular ultrasonic diagnosis system

Technical Field

The application relates to the technical field of medical equipment, in particular to a pulling and inserting mechanism, a retracting device and an intravascular ultrasound diagnosis system.

Background

The intravascular ultrasonic diagnosis device can play a role in pushing and pulling the catheter, thereby meeting the necessary requirement of an intravascular ultrasonic retracting mechanism on axial imaging of the blood vessel.

In clinical applications, the vascular ultrasound diagnostic apparatus includes a retracting mechanism capable of controlling the movement and fixation of the diagnostic catheter, and the retracting mechanism needs to be provided with a mechanism capable of rapidly and conveniently inserting and extracting the diagnostic catheter, and also needs to ensure that the diagnostic catheter remains connected and in communication stably and reliably during operation.

At present, the existing retracting mechanism often adopts structures such as a buckle and the like to fix the diagnosis catheter. However, because the structures such as the buckle and the like can not simultaneously realize the functions of automatic locking and one-key unlocking of the diagnosis catheter, the operation steps of medical staff in the use process are complicated, and the diagnosis efficiency is reduced.

Disclosure of Invention

Based on the above, the utility model needs to provide a pulling and inserting mechanism, a retracting device and an intravascular ultrasound diagnosis system, so as to realize the functions of automatic locking and one-key unlocking of a diagnosis catheter, simplify the operation steps of medical staff in the use process and improve the diagnosis efficiency.

The plug-pull mechanism comprises a base, a first warping rod and a first elastic piece, wherein a through hole for a diagnosis catheter to penetrate is formed in the base along a first direction; the two ends of the first tilting rod are respectively provided with a first locking part and a first pressing part, the first locking part extends towards the through hole and can be propped against the diagnosis catheter, the first tilting rod is rotationally connected with the base at a first rotating part, and the first rotating part is positioned between the first pressing part and the first locking part; one end of the first elastic piece is abutted to the base, the other end of the first elastic piece is abutted to the first pressing portion, and when the first elastic piece is in a natural state, the first elastic piece pushes the first pressing portion to rotate in a direction away from the base.

The above-mentioned pull-plug mechanism, first perk pole uses first rotation portion as center of rotation, forms "teeterboard" formula structure, in the use, medical personnel can insert the through-hole on the base with diagnosis pipe along first direction, under the effect of first elastic component, first pressing part rotates towards the direction of keeping away from the base, first perk pole rotates this moment with first rotation portion as the axle, the first locking part of the other end then rotates towards the direction that is close to the base, increase the pressure of first locking part to the periphery of diagnosis pipe to realize the automatic locking to diagnosis pipe. When the locking of the diagnosis catheter needs to be released, medical staff can overcome the elasticity of the first elastic piece by pressing one side surface of the first pressing part, push the first pressing part to rotate towards the direction close to the base, at the moment, the first tilting rod reversely rotates by taking the first rotating part as an axis, and the first locking part at the other end rotates towards the direction far away from the base, so that the pressure of the first locking part on the periphery of the diagnosis catheter is reduced and even released, and the one-key unlocking of the diagnosis catheter is realized.

In one embodiment, the pulling and inserting mechanism further comprises a first limiting piece, the first limiting piece penetrates through the first rotating portion and the base, and the first tilting rod can rotate by taking the first limiting piece as an axis.

In one embodiment, the first locking portion and the first pressing portion are respectively located at two adjacent side surfaces of the base.

In one embodiment, the pulling and inserting mechanism further includes a second tilting rod and a second elastic member, two ends of the second tilting rod are respectively provided with a second locking portion and a second pressing portion, the second locking portion extends towards the through hole and can be abutted against the diagnosis catheter, the second tilting rod is rotatably connected with the base at a second rotating portion, the second rotating portion is located between the second pressing portion and the second locking portion, one end of the second elastic member is abutted to the base, the other end of the second elastic member is abutted to the second pressing portion, and when the second elastic member is in a natural state, the second elastic member pushes the second pressing portion to rotate in a direction away from the base.

In one embodiment, the second locking portion and the second pressing portion are respectively located on two adjacent side surfaces of the base, and the second pressing portion and the first pressing portion are located on the same side surface of the base.

In one embodiment, a protrusion is disposed in the direction of the first pressing portion facing the base, and the protrusion abuts against a side surface of the second pressing portion facing away from the second elastic member.

In one embodiment, the plugging mechanism further comprises a detector, the detector body is connected to the base, and a detection end of the detector is disposed towards the through hole to detect whether the diagnostic catheter is inserted in place.

In one embodiment, the plugging mechanism further comprises a locking piece, and the locking piece is arranged on the detector in a penetrating manner and is in threaded connection with the base.

The utility model provides a withdrawing device, includes unblock button, pedestal and foretell plug mechanism, plug mechanism locates inside the pedestal, the unblock button activity is worn to locate the pedestal, and the butt in a first pressing part deviates from a side of first elastic component.

An intravascular ultrasound diagnostic system comprises a diagnostic catheter and the retraction device, wherein at least one positioning hole is formed in the side wall of the diagnostic catheter, and the first locking part can partially extend into the positioning hole so as to limit the diagnostic catheter to move along a first direction.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic diagram of an overall structure of an intravascular ultrasound diagnostic system according to an embodiment of the present application;

FIG. 2 is a schematic diagram of the overall structure of an intravascular ultrasound diagnostic system according to an embodiment of the present application;

fig. 3 is a schematic overall structure of a plug-and-pull mechanism according to an embodiment of the present application;

fig. 4 is an exploded view of the overall structure of a plugging mechanism according to an embodiment of the present application.

Description of the reference numerals

1. An intravascular ultrasound diagnostic system; 10. a retracting device; 20. diagnosing the catheter; 21. positioning holes; 100. a pulling and inserting mechanism; 200. a base; 300. unlocking the key; 110. a base; 111. a through hole; 120. a first warping rod; 121. a first locking portion; 122. a first pressing portion; 1221. a protrusion; 123. a first rotating part; 130. a second warping rod; 131. a second locking portion; 132. a second pressing portion; 133. a second rotating part; 141. a first elastic member; 142. a second elastic member; 151. a first limiting member; 152. a second limiting piece; 161. a first spring hole; 162. a second spring hole; 171. a detector; 172. a locking member.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.

As shown in fig. 1-4, the present application provides an intravascular ultrasound diagnostic system 1 comprising a diagnostic catheter 20 and a retraction device 10. The side wall of the diagnostic catheter 20 is provided with at least one positioning hole 21. The withdrawal device 10 is provided with a locking portion which can extend at least partially into the positioning hole 21 to limit the movement of the diagnostic catheter 20 in a first direction (as indicated by the arrow T in fig. 4).

The retracting device 10 includes an unlocking button 300, a base 200, and a plugging mechanism 100. The plug-and-pull mechanism 100 is disposed inside the base 200. The unlocking key 300 is movably arranged on the base 200 in a penetrating manner and is abutted against the control part of the plug-and-pull mechanism 100. When the medical care worker presses the unlocking key 300, the locking of the diagnosis catheter 20 by the plugging mechanism 100 can be released, and the one-key unlocking can be realized.

As shown in fig. 1-4, the present application provides a plug-in mechanism 100, which includes a base 110, a first tilting lever 120, and a first elastic member 141. The base 110 is provided with a through hole 111 in a first direction through which the diagnostic catheter 20 is inserted. The first tilting lever 120 is provided at both ends thereof with a first locking part 121 and a first pressing part 122, respectively. The first locking portion 121 extends toward the through hole 111 and can abut against the diagnostic catheter 20. The first tilting lever 120 is rotatably connected to the base 110 at a first rotation portion 123. Wherein the first rotating portion 123 is located between the first pressing portion 122 and the first locking portion 121. One end of the first elastic member 141 abuts against the base 110, and the other end abuts against the first pressing portion 122. When the first elastic member 141 is in a natural state, the first elastic member 141 pushes the first pressing part 122 to rotate in a direction away from the base 110.

In the above-mentioned plug-pull mechanism 100, the first tilting lever 120 takes the first rotating portion 123 as the rotation center to form a "see-saw" structure, and in the use process, the medical staff can insert the diagnostic catheter 20 into the through hole 111 on the base 110 along the first direction, under the action of the first elastic member 141, the first pressing portion 122 rotates in the direction away from the base 110, at this time, the first tilting lever 120 rotates with the first rotating portion 123 as the axis, and the first locking portion 121 at the other end rotates in the direction close to the base 110, so as to increase the pressure of the first locking portion 121 on the outer periphery of the diagnostic catheter 20, thereby realizing automatic locking of the diagnostic catheter 20. When the locking of the diagnostic catheter 20 needs to be released, the medical staff can overcome the elastic force of the first elastic member 141 by pressing one side surface of the first pressing part 122, which is away from the first elastic member 141, to push the first pressing part 122 to rotate towards the direction close to the base 110, at this time, the first tilting lever 120 reversely rotates by taking the first rotating part 123 as an axis, and the first locking part 121 at the other end rotates towards the direction far away from the base 110, so that the pressure of the first locking part 121 on the periphery of the diagnostic catheter 20 is reduced, even released, and the one-key unlocking of the diagnostic catheter 20 is realized.

It should be noted that, the first tilting lever 120 should have a certain rigidity to ensure that when the first elastic member 141 pushes the first pressing portion 122 to rotate in a direction away from the base 110 under the action of its own elastic force, the first tilting lever 120 can rotate about the first rotating portion 123, even if the first locking portion 121 rotates in a direction approaching the base 110, so that, after the diagnostic catheter 20 penetrates the through hole 111, the first locking portion 121 can be tightly attached to the outer periphery of the diagnostic catheter 20, thereby locking the position of the diagnostic catheter 20.

It should be understood that the base 110 should be provided with a via hole through which the first locking portion 121 can be inserted, so that the first locking portion 121 at least partially passes through the via hole and enters the space where the through hole 111 is located when the plugging mechanism 100 is in the original state (when the diagnostic catheter 20 is not inserted into the through hole 111). When the diagnostic catheter 20 is inserted into the through hole 111, the outer circumference of the diagnostic catheter 20 is partially abutted against the first locking part 121 to push the first locking part 121 partially out of the through hole, and at this time, the first locking part 121 is closely abutted against the outer circumference of the diagnostic catheter 20 by the first elastic member 141. When the first locking portion 121 extends at least partially into the positioning hole 21 on the diagnostic catheter 20, the diagnostic catheter 20 cannot move in the first direction any more, and locking of the diagnostic catheter 20 is achieved.

It should be noted that, the first warping rod 120 may be a straight rod or a bending rod. In this application, as shown in fig. 3 and fig. 4, the projection of the base 110 in the first direction has at least three edges with included angles, and the first tilting bar 120 is a bending bar, where the first locking portion 121 and the first pressing portion 122 are respectively located on two adjacent sides of the base 110.

Further, in one embodiment, a bevel (not shown) is provided on the side of the first locking portion 121 facing the diagnostic catheter 20 to facilitate the outward pushing of the first locking portion 121 by the diagnostic catheter 20. During insertion of the diagnostic catheter 20 into the through hole 111 in the first direction, the end surface of the diagnostic catheter 20 presses the inclined surface so that the first pressing portion 122 compresses the first spring, and the first tilting lever 120 rotates about the first rotating portion 123 as the central axis until the first locking portion 121 is completely separated from the cylindrical surface range required for insertion of the diagnostic catheter 20 into the through hole 111. The diagnostic catheter 20 continues to move along the first direction, and the first locking part 121 slides against the cylindrical surface of the diagnostic catheter 20 until the first locking part 121 is inserted into the positioning hole 21, so that the diagnostic catheter 20 is locked.

In one embodiment, as shown in fig. 4, the plug mechanism 100 further includes a first stop 151. The first limiting member 151 is disposed through the first rotating portion 123 and the base 110. The first tilting lever 120 can rotate about the first limiting member 151. Specifically, in the present embodiment, the first limiting member 151 is a pin. The first tilting lever 120 can rotate around the pin with the pin as an axis.

In one embodiment, as shown in fig. 4, the plug mechanism 100 further includes a second stick-up lever 130 and a second elastic element 142. The second tilting lever 130 is provided at both ends thereof with a second locking part 131 and a second pressing part 132, respectively. The second locking portion 131 extends toward the through hole 111 and can abut against the diagnosis catheter 20. The second tilting lever 130 is rotatably connected to the base 110 at a second rotation portion 133. Wherein the second rotating portion 133 is located between the second pressing portion 132 and the second locking portion 131. One end of the second elastic member 142 abuts against the base 110, and the other end abuts against the second pressing portion 132. When the second elastic member 142 is in a natural state, the second elastic member 142 pushes the second pressing portion 132 to rotate in a direction away from the base 110.

The second tilting lever 130 has substantially the same function as the first tilting lever 120, and can perform the functions of automatically locking and unlocking the diagnostic catheter 20 by one key. The locking direction of the second locking portion 131 and the first locking portion 121 is not exactly the same, i.e. the locking direction therebetween may be an acute angle, a right angle, an obtuse angle, a flat angle, etc. Specifically, in the present embodiment, the second locking portion 131 is opposite (disposed at a flat angle) to the locking direction of the first locking portion 121 to achieve locking of the diagnostic catheter 20 in two opposite directions, which is advantageous in enhancing the locking effect of the diagnostic catheter 20.

It should be further noted that the number of positioning holes 21 on the diagnostic catheter 20 may be two: the first locking portion 121 and the second locking portion 131 are aligned with each other, and the first locking portion 121 and the second locking portion 131 can be inserted. Of course, the number of the positioning holes 21 on the diagnostic catheter 20 may be multiple, so as to facilitate the first locking portion 121 and/or the second locking portion 131 to extend into the positioning holes 21 to lock the diagnostic catheter 20 when the diagnostic catheter 20 is rotated at different angles (when the positioning holes 21 are circumferentially spaced apart), and has different insertion depths (when the positioning holes 21 are circumferentially spaced apart along the length direction of the diagnostic catheter 20).

It will be appreciated that the side of the second locking portion 131 facing the diagnostic catheter 20 may also be provided with a bevel (not shown) to facilitate the outward pushing of the second locking portion 131 by the diagnostic catheter 20. The inclined surfaces acting on the first locking portion 121 are the same, and will not be described again.

Further, as shown in fig. 4, the plug mechanism 100 further includes a second limiting member 152. The second limiting member 152 is disposed through the second rotating portion 133 and the base 110. The second tilting lever 130 can rotate about the second limiting member 152. Specifically, in the present embodiment, the second limiting member 152 is a pin. The second tilting lever 130 can rotate around the pin with the pin as an axis.

In this embodiment, as shown in fig. 4, the first elastic member 141 and the second elastic member 142 are both springs. The base 110 is provided with a first spring hole 161 and a second spring hole 162. The first elastic member 141 is partially inserted into the first spring hole 161, and the second elastic member 142 is partially inserted into the second spring hole 162.

Further, the second locking part 131 and the second pressing part 132 are respectively located at two adjacent side surfaces of the base 110. The second pressing portion 132 is located on the same side of the base 110 as the first pressing portion 122. Accordingly, the first spring hole 161 and the second spring hole 162 are opened at the same side of the base 110.

In one embodiment, as shown in fig. 3 and 4, the first pressing part 122 is provided with a protrusion 1221 toward the base 110. The protrusion 1221 abuts against a side surface of the second pressing portion 132 facing away from the second elastic member 142. Therefore, when the first pressing portion 122 is pressed to rotate in a direction approaching the base 110, the boss 1221 can push the second pressing portion 132 to rotate also in a direction approaching the base 110, thereby simultaneously realizing: pushing the first tilting lever 120 to rotate around the first rotating portion 123 and the second tilting lever 130 to rotate around the second rotating portion 133, the first locking portion 121 and the second locking portion 131 simultaneously unlock the diagnostic catheter 20.

In one embodiment, as shown in fig. 3 and 4, the unplug mechanism 100 further comprises a detector 171. The detector 171 body is connected to the base 110. The detection end of the detector 171 is disposed toward the through hole 111 to detect whether the diagnostic catheter 20 is inserted in place.

In addition, the plug mechanism 100 also includes a locking member 172. The locking member 172 is disposed through the detector 171 and is screwed with the base 110.

It should be noted that the retracting device 10 is further provided with an operating system. When the detector 171 detects that the diagnostic catheter 20 is inserted in place (i.e., the detector 171 is triggered), the detector 171 will send a trigger signal to the operating system, which correspondingly prompts the insertion in place.

To facilitate understanding of the operation of the insertion and withdrawal mechanism 100, the retraction device 10, and the intravascular ultrasound diagnostic system 1 of the present application, the principles of locking and unlocking, respectively, will now be described:

locking working principle: the diagnostic catheter 20 is inserted into the through hole 111 of the plugging mechanism 100, the end surface of the diagnostic catheter 20 presses the inclined surface of the first locking part 121 and the inclined surface of the second locking part 131 inwards, the first tilting lever 120 is pushed to rotate along the axial direction of the first limiting piece 151, the second tilting lever 130 is pushed to rotate along the axial direction of the second limiting piece 152 until the first locking part 121 and the second locking part 131 are completely separated from the range of the cylindrical surface required by the insertion of the diagnostic catheter 20, and at the moment, the first spring is compressed by the first pressing part 122, and the second spring is compressed by the second pressing part 132. Continuing to push the diagnostic catheter 20 into the first direction, the first locking portion 121 and the second locking portion 131 slide against the cylindrical surface of the diagnostic catheter 20. When the diagnostic catheter 20 is inserted into place (as shown in fig. 2), the first locking portion 121 and the second locking portion 131 are respectively inserted into the positioning holes 21 aligned therewith, thereby locking the diagnostic catheter 20 in the through hole 111 of the insertion mechanism 100 such that the diagnostic catheter 20 cannot move in the first direction (i.e., cannot be pulled out or cannot continue to move forward). At this time, when the diagnostic catheter 20 is inserted in place, the detector 171 is triggered, the detector 171 signals the operating system, and a corresponding notification of the insertion of the diagnostic catheter 20 in place is made.

Unlocking working principle: the medical staff presses the unlocking key 300, and the unlocking key 300 applies a pushing force capable of overcoming the self elastic force of the first elastic member 141 (the self elastic force of the second elastic member 142 is not greater than the self elastic force of the first elastic member 141) to the first pressing portion 122, so that the first tilting lever 120 rotates around the first limiting member 151 until the first locking portion 121 is completely separated from the positioning hole 21 on the diagnosis catheter 20 (the first locking portion 121 is disengaged from the positioning hole 21). While the first tilting lever 120 is forced to rotate, the first pressing portion 122 drives the protrusion 1221 to apply a pushing force to the second pressing portion 132, which can overcome the self elastic force of the second elastic member 142, so that the second tilting lever 130 rotates around the second limiting member 152 until the second locking portion 131 is completely separated from the positioning hole 21 on the diagnostic catheter 20 (the first locking portion 121 is disengaged from the positioning hole 21). So far, the diagnosis catheter 20 is in an unlocking state, and the medical staff can pull out the diagnosis catheter 20 from the through hole 111, so that unlocking can be realized. After the diagnostic catheter 20 is pulled out (as shown in fig. 1), the detector 171 resumes its original state. After the unlocking key 300 is released, the first tilting lever 120 is reset to the original state under the self-elastic force of the first spring, and the second tilting lever 130 is reset to the original state under the self-elastic force of the second spring (as shown in fig. 3).

It should be noted that, as shown in fig. 3, when the unlocking key 300 is pressed, the included angle α formed by the movement direction of the first pressing portion 122 and the movement direction of the first locking portion 121 is variable, that is, the bending angle of the first tilting lever 120 can be changed to adapt to and satisfy the bases with different shapes. Similarly, the angle β (not shown) formed by the movement direction of the second pressing portion 132 and the movement direction of the first locking portion 121 may also be variable, i.e. by changing the bending angle of the second tilting lever 130, so as to adapt to and satisfy the bases having different shapes.

It should be noted that, the included angle α formed by the movement direction of the first pressing portion 122 and the movement direction of the first locking portion 121 may be any angle between 45 ° and 100 °. Preferably, in one embodiment, the angle α is 80 °, and in another embodiment, the angle α is 70 °. The angle β formed between the movement direction of the second pressing portion 132 and the movement direction of the first locking portion 121 may be any angle between 45 ° and 100 °.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

It should be readily understood that the terms "on … …", "above … …" and "above … …" in this disclosure should be interpreted in the broadest sense such that "on … …" means not only "directly on something", but also includes "on something" with intermediate features or layers therebetween, and "above … …" or "above … …" includes not only the meaning "on something" or "above" but also the meaning "above something" or "above" without intermediate features or layers therebetween (i.e., directly on something).

Further, spatially relative terms, such as "below," "beneath," "above," "over," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that in this document, 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. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A plug and play mechanism, comprising:

a base provided with a through hole for the diagnostic catheter to pass through along a first direction;

the first tilting rod is rotatably connected with the base at a first rotating part, and the first rotating part is positioned between the first pressing part and the first locking part; and

and one end of the first elastic piece is abutted to the base, the other end of the first elastic piece is abutted to the first pressing part, and when the first elastic piece is in a natural state, the first elastic piece pushes the first pressing part to rotate in a direction away from the base.

2. The pulling and inserting mechanism according to claim 1, further comprising a first limiting member, wherein the first limiting member is disposed through the first rotating portion and the base, and the first tilting lever is capable of rotating with the first limiting member as an axis.

3. The plug-and-pull mechanism of claim 2, wherein the first locking portion and the first pressing portion are located on two adjacent sides of the base, respectively.

4. The pulling and inserting mechanism according to claim 3, further comprising a second tilting lever and a second elastic member, wherein a second locking portion and a second pressing portion are respectively provided at two ends of the second tilting lever, the second locking portion extends toward the through hole and can abut against the diagnosis catheter, the second tilting lever is rotatably connected with the base at a second rotating portion, the second rotating portion is located between the second pressing portion and the second locking portion, one end of the second elastic member abuts against the base, the other end of the second elastic member abuts against the second pressing portion, and when the second elastic member is in a natural state, the second elastic member pushes the second pressing portion to rotate in a direction away from the base.

5. The plug-and-pull mechanism of claim 4, wherein the second locking portion and the second pressing portion are respectively located on two adjacent side surfaces of the base, and the second pressing portion and the first pressing portion are located on the same side surface of the base.

6. The plug-in mechanism according to claim 5, wherein the first pressing portion is provided with a protrusion toward the base, and the protrusion abuts against a side surface of the second pressing portion facing away from the second elastic member.

7. The unplugging mechanism according to any one of claims 1 to 6, further comprising a detector, wherein the detector body is coupled to the base, and wherein a detection end of the detector is disposed toward the through hole to detect whether the diagnostic catheter is inserted in place.

8. The plug mechanism of claim 7, further comprising a locking member disposed through the detector and threaded with the base.

9. The retracting device is characterized by comprising an unlocking key, a base and the pulling and inserting mechanism according to any one of claims 1-7, wherein the pulling and inserting mechanism is arranged in the base, and the unlocking key movably penetrates through the base and is abutted to one side surface of the first pressing part, which is away from the first elastic piece.

10. An intravascular ultrasound diagnostic system comprising a diagnostic catheter and a retraction device according to claim 9 wherein the sidewall of the diagnostic catheter is provided with at least one locating aperture and the first locking portion is capable of extending partially into the locating aperture to limit movement of the diagnostic catheter in a first direction.

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