CN113576535B - Intravascular ultrasound retraction device and system - Google Patents
Intravascular ultrasound retraction device and system Download PDFInfo
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- CN113576535B CN113576535B CN202111136817.8A CN202111136817A CN113576535B CN 113576535 B CN113576535 B CN 113576535B CN 202111136817 A CN202111136817 A CN 202111136817A CN 113576535 B CN113576535 B CN 113576535B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/12—Diagnosis using ultrasonic, sonic or infrasonic waves in body cavities or body tracts, e.g. by using catheters
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/08—Detecting organic movements or changes, e.g. tumours, cysts, swellings
- A61B8/0891—Detecting organic movements or changes, e.g. tumours, cysts, swellings for diagnosis of blood vessels
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/54—Control of the diagnostic device
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Abstract
The application relates to an intravascular ultrasound retraction device and system. The intravascular ultrasonic withdrawing device is used for withdrawing the catheter in the blood vessel and comprises a base, a power source component and a transmission component, wherein the power source component and the transmission component are assembled on the base, and the power source component is used for providing power for the transmission component; the transmission assembly comprises a first transmission part, a second transmission part and a clutch mechanism; the first transmission part is connected with the power source assembly, the clutch mechanism is connected between the first transmission part and the second transmission part, and the second transmission part is used for driving the guide pipe to perform retraction movement; the clutch mechanism comprises a first sleeve, a second sleeve and an operating component; and the abutting surface of the first sleeve and the second sleeve comprises a bevel; the operating component is used for controlling the relative rotation of the first sleeve and the second sleeve so as to align or stagger the first sleeve and the second sleeve, thereby enabling the transmission connection or the transmission disconnection of the first transmission part and the second transmission part. It is possible to realize smooth switching between manual and automatic.
Description
Technical Field
The application relates to the technical field of medical equipment, in particular to an intravascular ultrasound retraction device and system.
Background
The intravascular ultrasound retraction device can play a role in pushing and pulling the catheter, so that the necessary requirement of the intravascular ultrasound retraction device on the axial imaging of the blood vessel is met. In clinical application, the intravascular ultrasound retraction device needs to be capable of switching between a manual mode and an automatic mode.
In the current products on the market, manual and automatic switching of the intravascular ultrasonic retraction device is realized by an electromagnetic clutch or a mechanical clutch and an unlocking mechanism together.
Mechanical clutches include dog tooth or cone tooth meshes. The unlocking mechanism is provided with a multi-link mechanism, a shifting fork is used for directly separating the mechanical clutch, and the swing rod drives the rotor of the mechanical clutch to rotate and separate.
The mode of many link mechanism is high to the requirement of manufacturing, appears the card phenomenon dead easily in the assembling process, debugs difficult and inefficiency.
The mode structure of pendulum rod drive mechanical type clutch rotor rotation separation is simple, and part is small in quantity, and the assembly is simple, but its unilateral direction causes the clutch to break away from easily and the meshing motion is not steady, perhaps causes the whole intravascular supersound withdrawal device motion transmission unstability, and the resistance is great, and user experience degree is not high.
Although the electromagnetic clutch is convenient to assemble, the electromagnetic clutch needs circuit control, the design cost of a circuit is increased, and heat is easy to generate, so that the use of a product is influenced.
Disclosure of Invention
In order to solve the technical problem of motion transmission stability of an intravascular ultrasound retraction device between automatic switching and manual switching in the related art, the application provides an intravascular ultrasound retraction device and system.
In a first aspect, an embodiment of the present application provides an intravascular ultrasound retraction device for achieving retraction of a catheter in a blood vessel, including: the power source assembly and the transmission assembly are assembled on the base, and the power source assembly is used for providing power for the transmission assembly;
the transmission assembly comprises a first transmission part, a second transmission part and a clutch mechanism; the first transmission part is connected with the power source assembly, the clutch mechanism is connected between the first transmission part and the second transmission part, and the second transmission part is used for driving the catheter to perform retraction movement;
the clutch mechanism comprises a first sleeve, a second sleeve and an operating component, the first sleeve is connected with the first transmission part, and the second sleeve is connected with the second transmission part; the first sleeve and the second sleeve are coaxially arranged, and the abutting surfaces of the first sleeve and the second sleeve comprise inclined surfaces;
the operating component is used for controlling the first sleeve and the second sleeve to relatively rotate so as to align or stagger the first sleeve and the second sleeve, thereby enabling the transmission connection or the transmission disconnection of the first transmission part and the second transmission part.
Optionally, the power source assembly comprises an electric motor; the first transmission part comprises a motor gear, a clutch gear, a first transmission piece, a clutch upper shaft, a clutch intermediate shaft and a first spring;
the motor drives the motor gear to rotate, the clutch gear is meshed with the motor gear, the clutch gear is rigidly connected with the clutch upper shaft, the first spring sleeve is arranged on the outer peripheral side of the clutch upper shaft in a sleeved mode, the clutch upper shaft and the clutch intermediate shaft are circumferentially limited, the clutch intermediate shaft is in transmission connection with the first transmission piece, and the first transmission piece is in transmission connection with the second transmission part.
Optionally, the second transmission part comprises a second transmission part, a clutch lower shaft, a withdrawing lower gear and a rack;
the second transmission part is in transmission connection with the first transmission part, the second transmission part is connected with the clutch lower shaft, the withdrawing lower gear is arranged on the clutch lower shaft, and the withdrawing lower gear is meshed with the rack.
Optionally, the first transmission part and the second transmission part are in transmission connection through gears; or the first transmission part and the second transmission part are in transmission connection through a friction wheel.
Optionally, the operating component includes a connecting rod, a guide shaft, and a second spring, the second spring is sleeved on the guide shaft, the guide shaft is disposed on the connecting rod, and the guide shaft extends along a moving direction of the connecting rod;
one end of the connecting rod is rotatably fixed, and the other end of the connecting rod is connected with the first sleeve to control the relative approach or the relative distance of the first sleeve and the second sleeve.
Optionally, the operating component further includes a button, and the button is disposed on the connecting rod and used for pressing and controlling the connecting rod to move.
Optionally, the intravascular ultrasound retraction device further comprises a displacement sensor disposed on the base, the displacement sensor configured to detect displacement of the first sleeve in a vertical direction relative to the second sleeve.
Optionally, the ramp comprises a helical ramp having a lead angle greater than or equal to 20 ° and less than or equal to 40 °.
Optionally, the lead angle of the helical ramp is greater than or equal to 30 ° and less than or equal to 35 °.
Optionally, the intravascular ultrasound retraction device further comprises a sensor assembly for detecting a motion state and/or an operating state of the intravascular ultrasound retraction device.
Optionally, the sensor assembly comprises a coded detection assembly, the coded detection assembly comprises a code disc and a reading head, the code disc is arranged on the second transmission part, the reading head is arranged on the base, and the coded detection assembly is used for feeding back the withdrawal speed and the distance of the intravascular ultrasound withdrawal device.
Optionally, the sensor assembly comprises a motion detection assembly mounted on the base; the movement detection assembly includes a movement detection piece provided on a movement path of the operation member for detecting a movement state of the operation member.
Optionally, the sensor assembly comprises a clutch detection assembly configured to detect relative proximity or distancing of the first and second sleeves; the clutch detection assembly is arranged on the base, or the clutch detection assembly is arranged on the second sleeve.
In a second aspect, an embodiment of the present application further provides an intravascular ultrasound retraction system, where the intravascular ultrasound retraction system includes a base and the intravascular ultrasound retraction device described above, and the intravascular ultrasound retraction device is mounted on the base.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
an intravascular ultrasound retraction device provided by an embodiment of the present application for enabling a catheter to be retracted within a blood vessel includes a base, a power source assembly, and a transmission assembly. The transmission assembly comprises a first transmission part, a second transmission part and a clutch mechanism. The clutch mechanism includes a first sleeve, a second sleeve, and an operating member. The operating component is used for controlling the relative rotation of the first sleeve and the second sleeve so as to align or stagger the first sleeve and the second sleeve, thereby realizing the transmission connection or the transmission disconnection of the first transmission part and the second transmission part. The first sleeve and the second sleeve are controlled to rotate relatively through the operating part, so that the first sleeve and the second sleeve are close to or far away from each other, power of the power source assembly is transmitted to the first transmission part, and the first transmission part transmits the power to the second transmission part. Or, the motion of the second transmission part is realized through manual control, so that the intravascular ultrasound retraction device is stably switched between manual operation and automatic operation, and the diversified use requirements of users are met.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an intravascular ultrasound retraction device according to an embodiment of the present disclosure;
figure 2 is a partially exploded view of an intravascular ultrasound retraction device according to an embodiment of the present application;
FIG. 3 is a schematic view of an aligned configuration of a first sleeve and a second sleeve provided by an embodiment of the present application;
FIG. 4 is a schematic view of an embodiment of the present disclosure showing a first sleeve and a second sleeve in a staggered configuration;
FIG. 5 is a schematic structural diagram of a first sleeve and a second sleeve provided in an embodiment of the present application;
figure 6 is a cross-sectional view of an intravascular ultrasound retraction device according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a pressing state of a connecting rod according to an embodiment of the present disclosure;
FIG. 8 is a schematic structural diagram of a connecting rod according to an embodiment of the present disclosure in its original state;
fig. 9 and 10 are force-exploded schematic views of an intravascular ultrasound retraction device provided in an embodiment of the present application.
Reference numerals:
1. an intravascular ultrasound retraction device; 100. a power source assembly; 200. a transmission assembly; 400. a frame; 600. a base;
110. a motor;
210. a first transmission unit; 211. a first transmission member; 212. an upper shaft is clutched; 213. a middle clutch shaft; 214. a first spring; 215. a bearing limit ring; 216. a first pin; 217. a first bearing; 218. a clutch gear; 219. a motor gear;
220. a second transmission part; 221. a second transmission member; 222. the lower shaft is clutched; 223. retracting the lower gear;
230. a clutch mechanism; 231. a first sleeve; 232. a second sleeve; 233. an operating member; 2331. a connecting rod; 2332. a guide shaft; 2333. a second spring; 2334. a flat washer; 2335. pressing a key;
310. code disc; 320. a read head; 510. a motion detection member.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in 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 obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
With reference to fig. 1 to 10, an intravascular ultrasound retraction device 1 for achieving catheter retraction in a blood vessel is provided in an embodiment of the present application, including: a base 600, a power source assembly 100, and a transmission assembly 200. The power source assembly 100 and the transmission assembly 200 are mounted on the base 600, and the power source assembly 100 is used for providing power for the transmission assembly 200.
Referring to fig. 3 and 4, the transmission assembly 200 includes a first transmission part 210, a second transmission part 220, and a clutch mechanism 230; the first transmission part 210 is connected with the power source assembly 100, the clutch mechanism 230 is connected between the first transmission part 210 and the second transmission part 220, and the second transmission part 220 is used for driving the catheter to perform retraction movement.
The clutch mechanism 230 includes a first sleeve 231, a second sleeve 232, and an operating member 233, the first sleeve 231 is connected with the first transmission part 210, and the second sleeve 232 is connected with the second transmission part 220; the first sleeve 231 and the second sleeve 232 are coaxially arranged, and the contact surface of the first sleeve 231 and the second sleeve 232 comprises an inclined surface; the operating member 233 is used to control the relative rotation of the first sleeve 231 and the second sleeve 232, so that the first sleeve 231 and the second sleeve 232 are aligned or staggered, thereby enabling the transmission connection or the transmission disconnection of the first transmission part 210 and the second transmission part 220.
The embodiment of the application also provides an intravascular ultrasound retraction system, which comprises a base and an intravascular ultrasound retraction device 1. The intravascular ultrasound retraction device 1 is mounted on a base. The intravascular ultrasound retraction device 1 is connected to a base (not shown) of the intravascular ultrasound retraction system through the second transmission part 220.
With the intravascular ultrasound retraction device 1 provided in the embodiment of the present application, the first sleeve 231 and the second sleeve 232 are controlled to be relatively close by the operating member 233, so that the first sleeve 231 and the second sleeve 232 are aligned, and the first transmission part 210 is in transmission connection with the second transmission part 220. Then, the power source assembly 100 transmits the power to the first transmission part 210, and the first transmission part 210 transmits the power to the second transmission part 220, so that the intravascular ultrasound retraction device 1 can move relative to the base of the intravascular ultrasound retraction system, and the intravascular ultrasound retraction device 1 drives the catheter to retract in the blood vessel.
The transmission connection means that the power provided by the power source assembly 100 can be transmitted to the second transmission portion 220 through the first transmission portion 210, and the transmission disconnection means that the power provided by the power source assembly 100 cannot be transmitted to the second transmission portion 220 through the first transmission portion 210, that is, the connection relationship between the first transmission portion 210 and the second transmission portion 220 is disconnected.
With continued reference to fig. 3 and 4, the first sleeve 231 and the second sleeve 232 are controlled to move away from each other by the operating member 233, so that the first sleeve 231 and the second sleeve 232 are staggered, the first transmission part 210 is disconnected from the second transmission part 220, and therefore, the intravascular ultrasound retraction device 1 is manually controlled to move relative to the base so as to retract the catheter in the blood vessel.
In summary, the intravascular ultrasound retraction device 1 is smoothly switched between manual operation and automatic control by using the transmission connection or transmission disconnection between the first transmission part 210 and the second transmission part 220, so that the movement of the intravascular ultrasound retraction device 1 is more accurately controlled, and the diversified use requirements in clinical application are met.
Referring to fig. 5, the first sleeve 231 is circumferentially limited by the outer circumferential surface and the second sleeve 232, and the contact surface of the first sleeve 231 and the second sleeve 232 is an inclined surface, which includes a spiral inclined surface. The first sleeve 231 is provided with a spiral inclined surface, the second sleeve 232 is also provided with a spiral inclined surface, and the two spiral inclined surfaces are symmetrically distributed and are mutually matched. So that the first sleeve 231 moves around the spiral slope of the second sleeve 232 during the rotation and the first sleeve 231 is ensured to move smoothly.
When the helical ramps of the first sleeve 231 and the second sleeve 232 are aligned, the motion of the power source assembly 100 is transmitted smoothly, and is in the automatic retraction mode. When the helical ramps of the first and second sleeves 231, 232 are misaligned, the transmission of motion of the power source assembly 100 is halted, which is in the manual retraction mode.
On one hand, the operation part 233 is used for driving the first sleeve 231 and the second sleeve 232 to rotate and separate, the spiral inclined planes of the first sleeve 231 and the second sleeve 232 are in a symmetrical double-guiding mode, the number of parts is reduced, and the whole intravascular ultrasound retraction device 1 is simple in structure; on the other hand, the switching between the automatic retraction and the manual retraction is realized by utilizing the spiral inclined surface, the movement stability between the manual retraction and the automatic retraction is improved, the experience of the user operation is improved,
the number of the inclined surfaces of the first sleeve 231 and the second sleeve 232 may be 2 or 3, and the number may be set according to requirements without limitation, as long as the number of the inclined surfaces of the first sleeve 231 and the second sleeve 232 corresponds to each other.
Further, the lead angle of the spiral slope is greater than or equal to 20 ° and less than or equal to 40 °. The lead angle, also called the lead angle, is the angle between the circumference of the pitch diameter development of the thread and the helix. The lead angle of the spiral slope is set to be greater than or equal to 20 °, which allows the user to switch between manual and automatic retraction with less force and makes the relative movement of the first sleeve 231 and the second sleeve 232 smoother and smoother.
In a specific embodiment, the lead angle of the helical ramp is set to be greater than or equal to 30 ° and less than or equal to 35 °. The lead angle of the spiral slope is set to be greater than or equal to 30 °, so that the user can switch between manual withdrawal and automatic withdrawal with smaller force, and further the relative movement of the first sleeve 231 and the second sleeve 232 is more stable and smooth. The lead angle of the helical slope is set to 35 ° or less, and the first sleeve 231 and the second sleeve 232 can be prevented from slipping off in the manual and automatic retraction switching.
Referring to fig. 6, power source assembly 100 includes a motor 110. The first transmission part 210 includes a gear set, a first transmission member 211, a clutch upper shaft 212, a clutch intermediate shaft 213, and a first spring 214. The gear set includes an intermeshing motor gear 219 and a clutch gear 218. The motor gear 219 meshes with the clutch gear 218 to constitute a gear train transmission. The motor 110 includes a reduction motor. The reduction motor transmits the rotational motion to the motor gear 219, and the motor gear 219 transmits the rotational motion to the clutch gear 218. The clutch gear 218 is rigidly connected with the clutch upper shaft 212, and the clutch upper shaft 212 and the clutch intermediate shaft 213 are circumferentially limited so as to realize the transmission of motion.
Specifically, the clutch upper shaft 212 is provided with a flat position, the clutch intermediate shaft 213 is provided with a groove, and the flat position of the clutch upper shaft 212 is matched with the groove of the clutch intermediate shaft 213, so that circumferential limiting of the clutch upper shaft 212 and the clutch intermediate shaft 213 is realized, and further, the rotary motion is transmitted to the clutch intermediate shaft 213 from the clutch upper shaft 212.
The first spring 214 is sleeved on the outer periphery of the clutch upper shaft 212, and the clutch gear 218 can make the first sleeve 231 rotate and descend along the abutting surface with the second sleeve 232 under the action of the restoring force of the first spring 214, so that the motion transmission is continued. The first spring 214 is used for restoring, and the force transmission between the first sleeve 231 and the second sleeve 232 is smooth.
The clutch intermediate shaft 213 is in transmission connection with the first transmission member 211, and the clutch intermediate shaft 213 is fixedly connected with the first transmission member 211 through a set screw. The first transmission member 211 is in transmission connection with the second transmission part 220, so that the transmission of motion is realized.
The first transmission part 210 further includes a bearing retainer 215, a first pin 216, a first bearing 217, and a second bearing. The first bearing 217 and the second bearing are assembled on the first sleeve 231, and the bearing limiting ring 215 is used for limiting and fixing the first bearing 217; the clutch intermediate shaft 213 is configured to rotate relative to the first sleeve 231. In this way, the first transmission part 210 is prevented from being over-constrained when being relatively far away from the second transmission part 220. And the first pin 216 is in interference fit with the first sleeve 231, and can provide a motion support for the first transmission part 210.
The second transmission part 220 includes a second transmission member 221, a clutch lower shaft 222, and a rack and pinion assembly. The rack and pinion assembly includes a retract gear 223 and a rack. The second transmission member 221 is in transmission connection with the first transmission member 211, and the first transmission member 211 and the second transmission member 221 can be in transmission connection through a gear. Of course, the first transmission member 211 and the second transmission member 221 may be connected by a friction wheel transmission.
The first transmission member 211 and the second transmission member 221 are in transmission connection, and may be in a gear engagement manner or a friction wheel manner, and both may realize transmission of motion. Of course, the motion transmission manner between the first transmission member 211 and the second transmission member 221 is not limited to the above two manners, and other manners to realize the motion transmission between the first transmission member 211 and the second transmission member 221 may be applied to the embodiment of the present application.
The second transmission member 221 is connected to the clutch lower shaft 222, and the second transmission member 221 is fixed to the clutch lower shaft 222 by a set screw. The withdrawing lower gear 223 is arranged on the clutch lower shaft 222, the other end of the clutch lower shaft 222 is provided with a square flat position, and the clutch lower shaft 222 is fixedly connected with the withdrawing lower gear 223 through a screw and the square flat position. Thereby realizing the transmission of the whole rotating motion.
The withdrawing gear 223 is meshed with the rack, and the withdrawing gear 223 is in transmission connection with the rack arranged on the base, so that the rotary motion is converted into linear motion, and the requirement of the intravascular ultrasound system on automatic withdrawing motion is met.
The operation member 233 is used for controlling the relative rotation of the first sleeve 231 and the second sleeve 232 so as to align or misalign the first sleeve 231 and the second sleeve 232, and may be a structure in which the first sleeve 231 can rotate relative to the second sleeve 232 and the second sleeve 232 is fixed; the second sleeve 232 may be capable of rotating relative to the first sleeve 231, the first sleeve 231 may be stationary, and both the first sleeve 231 and the second sleeve 232 may be rotatable.
Specifically, the second sleeve 232 is fixed on the base 600, and the first sleeve 231 can rotate and separate and move in the vertical direction relative to the first sleeve 231 under the action of the operating member 233, wherein when the first transmission piece 211 and the second transmission piece 221 are connected through gear transmission, the depth of engagement of the two gears (which means the distance of engagement of the two gears in the vertical direction) can be obtained through measurement before the intravascular ultrasound retraction device 1 is assembled, a displacement sensor (not shown) is arranged on the base 600, the displacement of the first sleeve 231 relative to the second sleeve 232 in the vertical direction is detected through the displacement sensor, and the obtained displacement of the first sleeve 231 is compared with the depth of engagement of the two gears, so that whether the two gears are in a complete engagement state, a incomplete engagement state or a disengagement state can be known.
For example, if the displacement of the first sleeve 231 is detected to be zero, it indicates that the two gears are in a completely meshed state, and if the displacement is about half of the depth, it indicates that the two gears are in an incompletely meshed state, at this time, the manual retraction or the automatic retraction should not be performed, the retraction should be stopped to check the problem, and the retraction operation is performed after the problem is solved.
The displacement sensor is any one of a potentiometer-type displacement sensor, a photoelectric displacement sensor or a laser displacement sensor, for example, the laser displacement sensor is arranged on the base 600, the laser displacement sensor is positioned above the first sleeve 231, and the laser displacement sensor is internally composed of a processor unit, an echo processing unit, a laser transmitter, a laser receiver and the like. The laser displacement sensor transmits one million laser pulses per second to the first sleeve 231 and returns to the receiver through the laser transmitter, and the processor calculates the time required for the laser pulses to encounter the first sleeve 231 and return to the receiver, thereby calculating a distance value, so that the displacement amount can be calculated.
Referring to fig. 1 and 2, the operating member 233 includes a connecting rod 2331, a guide shaft 2332, and a second spring 2333, the second spring 2333 is sleeved on the guide shaft 2332, the guide shaft 2332 is disposed on the connecting rod 2331, and the guide shaft 2332 extends in the moving direction of the connecting rod 2331. One end of the connecting rod 2331 is rotatably fixed, and the other end of the connecting rod 2331 is connected with the first sleeve 231 for controlling the relative approaching or distancing of the first sleeve 231 and the second sleeve 232.
The operation part 233 further includes a button 2335, and the button 2335 is disposed on the connecting rod 2331 for pressing the connecting rod 2331 to be controlled to move. The keys 2335 include silicone keys which are arranged on the connecting rod 2331 in a protruding manner, so that users can press the silicone keys conveniently, comfort level of pressing is provided for the users, user experience is better, and movement of the connecting rod 2331 is controlled conveniently.
The intravascular ultrasound retraction device 1 further includes a holster 400, and the base 600 is mounted on the holster 400. The connecting rod 2331 is mounted on the frame 400 by screws. The operating member 233 further includes a second pin and a flat washer 2334. The connecting rod 2331 is sleeved on the second pin, and the silica gel key is sleeved on the connecting rod 2331. The guide shaft 2332 sequentially passes through the second spring 2333, the flat washer 2334 and the connecting rod 2331, and is fixedly assembled to the base 600 by means of two screws to guide and assist the swing motion of the connecting rod 2331.
Referring to fig. 7, when the user presses the connecting rod 2331, the connecting rod 2331 swings about a fixed fulcrum. During the swing, the connecting rod 2331 compresses the second spring 2333, thereby rotating the first sleeve 231 about the second sleeve 232.
During the rotation, the second sleeve 232 rises around the spiral slope of the first sleeve 231, and after the second sleeve 232 rises for a certain distance, the first transmission piece 211 is separated from the second transmission piece 221, so that the power transmission of the power source assembly 100 is stopped. At this time, the intravascular ultrasound retraction device 1 can be caused to perform a retraction motion by manually operating the intravascular ultrasound retraction device 1.
Referring to fig. 8, when the user releases the connecting rod 2331, the connecting rod 2331 is reset by the compressive force of the second spring 2333 and drives the first sleeve 231 to rotate again. Thus, the second sleeve 232 descends along the spiral slope of the first sleeve 231 during the rotation. So that the first transmission member 211 is attached to the second transmission member 221, and the power transmission of the power source assembly 100 is continued. The motion of the intravascular ultrasound retraction device 1 may now be controlled by the power source assembly 100.
The connecting rod 2331 moves in a first direction, the first sleeve 231 rotates in the first direction, and the first sleeve 231 reciprocates up and down in a direction perpendicular to the first direction. The first direction is the direction of the pressing force F1.
Referring to fig. 9 and 10, the connecting rod 2331 is rotated about a fixed fulcrum by an external pressing force F1. The pressing force F1 counteracts the resisting force F2 of the second spring 2333 and also provides the circumferential force F3 required for the rotation of the first sleeve 231. The first sleeve 231 rotates around the second sleeve 232 under the action of the circumferential force F3, and the spiral slope of the second sleeve 232 is pressed by the spiral slope of the first sleeve 231, thereby exerting a reaction force F4. The reaction force F4 is partially used to balance the circumferential force F3, and the other part is converted into a component force F5, the component force F5 overcomes the elastic force F6 to move the first sleeve 231 upward, so that the first transmission member 211 is disengaged from the second transmission member 221, and the automatic retraction movement is converted into the manual retraction movement.
When the pressing force F1 pressing the connecting rod 2331 is released, the resistance force F2 of the second spring 2333 forces the connecting rod 2331 to return, providing a part of the circumferential force to rotate the first sleeve 231 during the return of the connecting rod 2331. Meanwhile, under the action of the elastic force F6, the first sleeve 231 moves downward, and the spiral inclined surface of the second sleeve 232 is aligned and attached to the spiral inclined surface of the first sleeve 231, so that the first transmission piece 211 is attached to the second transmission piece 221, and the power of the power source assembly 100 is continuously transmitted to the second transmission piece 221. The manual retracting movement is converted into the automatic retracting movement.
Thus, the short-distance operation stroke is converted into the long-distance working stroke by the swing motion of the connecting rod 2331. Effectively utilizes the layout space of the intravascular ultrasound retraction device 1 and reduces the overall dimension of the intravascular ultrasound retraction device 1. The spiral slope of the first sleeve 231 is caused to perform a spiral elevating motion around the central axis of the second sleeve 232 while being guided by the spiral slope of the second sleeve 232 by the swing motion of the connecting rod 2331.
In a specific embodiment, the intravascular ultrasound retraction device 1 further comprises a sensor assembly for detecting a motion state of the intravascular ultrasound retraction device 1. In this way, the first sleeve 231 and the second sleeve 232 are controlled to rotate relatively by the operating member 233, so that the first sleeve 231 and the second sleeve 232 approach or separate from each other, and thus the power of the power source assembly 100 is transmitted to the first transmission part 210, and the first transmission part 210 transmits the power to the second transmission part 220. Or, the motion of the second transmission part 220 is realized through manual control, so that the intravascular ultrasound retraction device 1 is smoothly switched between manual operation and automatic operation, and the diversified use requirements of users are met. And the sensor component can feed back the motion state and/or the working state of the intravascular ultrasound retraction device 1 in time, so that the process of automatic control or manual control is more accurate, and the conditions of speed jump and motion transmission mutation are avoided.
The sensor assembly can timely feed back the motion state or the working state of the intravascular ultrasound retraction device 1, so that the process of automatic control or manual control is more accurate, and the conditions of jumping and abrupt change of motion transmission of the speed are avoided. Of course, the sensor assembly can also feed back the motion state and the working state of the intravascular ultrasound retraction device 1 in time, so that more accurate operation is realized.
The motion state of the intravascular ultrasound retraction device 1 refers to the retraction speed and distance of the intravascular ultrasound retraction device 1, and the working state of the intravascular ultrasound retraction device 1 refers to whether the intravascular ultrasound retraction device 1 is in an automatic working state or a manual working state. Specifically, the sensor assembly can detect the withdrawal speed of the intravascular ultrasound withdrawal device 1, so that the withdrawal speed of the intravascular ultrasound withdrawal device 1 is ensured to be uniform and stable in the withdrawal process, and the condition of speed jump is avoided. Meanwhile, the sensor assembly can also control the retracting stroke, so that the condition that the intravascular ultrasonic retracting device 1 impacts the structural part in the retracting process is avoided. And the sensor assembly can also detect whether the actual motion parameters of the intravascular ultrasound retraction device 1 meet the control requirements, so that the stability of the retraction process is ensured. The sensor assembly can also detect the motion state of the operating member 233, so as to monitor the switching of the automatic control state or the manual control state of the intravascular ultrasound retraction device 1, and determine whether the intravascular ultrasound retraction device 1 is in the automatic operation state or the manual operation state. The sensor assembly may further detect whether the first sleeve 231 and the second sleeve 232 are in a staggered state or an aligned state, so as to feed back whether the intravascular ultrasound retraction device 1 is in an automatic working state or a manual working state, specifically, when the first sleeve 231 and the second sleeve 232 are detected to be in a staggered state, this indicates that the intravascular ultrasound retraction device 1 is in a manually controlled working state, and when the first sleeve 231 and the second sleeve 232 are detected to be in an aligned state, this indicates that the intravascular ultrasound retraction device 1 is in an automatically controlled working state.
To sum up, the intravascular ultrasound retraction device 1 is smoothly switched between manual operation and automatic control by using the transmission connection or transmission disconnection between the first transmission part 210 and the second transmission part 220, so that the movement of the intravascular ultrasound retraction device 1 is more accurately controlled, and the diversified use requirements in clinical application are met. And can feed back the motion state of endovascular supersound withdrawal device 1 fast through setting up the sensor subassembly, improve motion control's accuracy nature.
Referring to fig. 7 and 8, the sensor assembly includes a motion detecting assembly 500, and the motion detecting assembly 500 is mounted on the base 600 for detecting a motion state of the connecting rod 2331. The movement detecting assembly 500 includes a movement detecting member 510, and the movement detecting member 510 is disposed on a movement path of the operating part 233. The motion detector 510 is disposed on a motion path of the connecting rod 2331. The motion detector 510 includes a toggle lever. The connecting rod 2331 can make a reciprocating swing motion, and the motion detecting part 510 is disposed on a motion path of the connecting rod 2331, and when the connecting rod 2331 swings, the motion detecting part 510 can be triggered by the connecting rod 2331, so that the motion detecting assembly 500 feeds back a circuit control signal.
The motion detecting assembly 500 detects a motion state of the connecting rod 2331, and determines whether the first sleeve 231 and the second sleeve 232 of the clutch mechanism 230 are staggered or aligned through the motion state of the connecting rod 2331, so as to timely feed back a circuit control signal and issue a circuit control command.
Under normal conditions, the connecting rod 2331 is not pressed, the first sleeve 231 and the second sleeve 232 are attached and aligned, and the motion detection assembly 500 is pressed by the connecting rod 2331, so as to trigger a circuit control signal and feed back the circuit control signal to a control system. When the connecting rod 2331 is pressed, the first sleeve 231 and the second sleeve 232 are staggered, the motion detection assembly 500 is reset, the switch circuit signal is disconnected, and the control system judges the states of the first sleeve 231 and the second sleeve 232 according to the circuit signal, namely the first sleeve 231 and the second sleeve 232 are in a staggered state or an aligned state, so as to determine the working state of the intravascular ultrasound retraction device 1.
The motion detection assembly 500 also includes a micro switch. The micro switch includes three pins, pin a, pin B, and pin C. And the pin C is a public end, the pin A and the pin C form a circuit loop when the pin C is not triggered, and the pin B and the pin C form the circuit loop when the pin C is triggered.
The sensor assembly further includes a clutch detection assembly (not shown) configured to detect relative proximity or distancing of the first sleeve 231 and the second sleeve 232. The clutch detection assembly is provided on the base 600. Of course, the clutch detection assembly may also be provided on the second sleeve 232. The clutch detection assembly comprises a microswitch, the detection principle of the microswitch is consistent with that of the motion detection assembly 500, the clutch detection piece of the clutch detection assembly is arranged on the motion path of the first sleeve 231, and the microswitch can perform automatic control and safety protection, so that the control precision of the clutch detection assembly is improved.
The retracting movement of the intravascular ultrasound retraction device 1 does not allow disengagement between the first transmission part 210 and the second transmission part 220 in the automatic operation mode. The automatic operation mode must be controlled to be immediately stopped once the disengagement occurs. Likewise, the retraction movement of the intravascular ultrasound retraction device 1 does not allow for a power-up triggered automatic operation state in the manual operation mode. Therefore, in order to ensure the safety and effectiveness of the intravascular ultrasound retraction device 1 during the switching between automatic and manual operation, the transmission state between the first transmission part 210 and the second transmission part 220 is detected by providing a clutch detection assembly. Once the clutch detection assembly detects the state change of the first transmission part 210 and the second transmission part 220, the clutch detection assembly can feed back a circuit signal to the control system in time, and the control system sends out a corresponding control command.
Referring to fig. 6, the sensor assembly further includes a code detection assembly 300, the clutch lower shaft 222 is fixed on the base 600 through two bearing assemblies, and the code detection assembly 300 is disposed on the second transmission part 220 for monitoring and feeding back the parameters of the retracting movement. The code detection assembly 300 is disposed on the clutch lower shaft 222.
The coded detection assembly 300 comprises a code wheel 310 and a read head 320, and the coded detection assembly 300 is configured to feed back the withdrawal speed and distance of the intravascular ultrasound withdrawal device 1 in real time. The coded detection assembly 300 is arranged on the clutch lower shaft 222 to monitor the withdrawal speed of the intravascular ultrasound withdrawal device 1, so that the withdrawal speed is ensured to be uniform and stable in the withdrawal process, and the condition of speed jump is avoided.
In a specific embodiment, a code detection assembly 300 may be further disposed in the second transmission portion 220 for detecting whether the actual motion parameters of the intravascular ultrasound retraction device 1 meet the control requirements.
The intravascular ultrasound retraction device 1 further comprises an electronic limit switch which is arranged on the base 600 for controlling the retraction stroke and avoiding the retraction process from impacting other structural components.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be 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. Also, 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 an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (13)
1. An intravascular ultrasound retraction device for effecting retraction of a catheter within a blood vessel, comprising: the power source assembly and the transmission assembly are assembled on the base, and the power source assembly is used for providing power for the transmission assembly;
the transmission assembly comprises a first transmission part, a second transmission part and a clutch mechanism; the first transmission part is connected with the power source assembly, the clutch mechanism is connected between the first transmission part and the second transmission part, and the second transmission part is used for driving the catheter to perform retraction movement;
the clutch mechanism comprises a first sleeve, a second sleeve and an operating component, the first sleeve is connected with the first transmission part, and the second sleeve is connected with the second transmission part; the first sleeve and the second sleeve are coaxially arranged, and the abutting surfaces of the first sleeve and the second sleeve comprise inclined surfaces; the inclined plane comprises a symmetrical double-guide spiral inclined plane;
the operating component is used for controlling the first sleeve and the second sleeve to relatively rotate so as to align or stagger the first sleeve and the second sleeve, thereby enabling the transmission connection or the transmission disconnection of the first transmission part and the second transmission part;
the operating part comprises a connecting rod, a guide shaft and a second spring, the second spring is sleeved on the guide shaft, the guide shaft is arranged on the connecting rod, and the guide shaft extends along the movement direction of the connecting rod;
one end of the connecting rod is rotatably fixed, and the other end of the connecting rod is connected with the first sleeve to control the relative approach or the relative distance of the first sleeve and the second sleeve.
2. The intravascular ultrasound retraction device according to claim 1 wherein said power source assembly comprises a motor; the first transmission part comprises a motor gear, a clutch gear, a first transmission piece, a clutch upper shaft, a clutch intermediate shaft and a first spring;
the motor drives the motor gear to rotate, the clutch gear is meshed with the motor gear, the clutch gear is rigidly connected with the clutch upper shaft, the first spring sleeve is arranged on the outer peripheral side of the clutch upper shaft in a sleeved mode, the clutch upper shaft and the clutch intermediate shaft are circumferentially limited, the clutch intermediate shaft is in transmission connection with the first transmission piece, and the first transmission piece is in transmission connection with the second transmission part.
3. The intravascular ultrasound retraction device according to claim 1 wherein said second transmission comprises a second transmission member, a clutch lower shaft, a retraction lower gear and a rack;
the second transmission part is in transmission connection with the first transmission part, the second transmission part is connected with the clutch lower shaft, the withdrawing lower gear is arranged on the clutch lower shaft, and the withdrawing lower gear is meshed with the rack.
4. The intravascular ultrasound retraction device according to claim 1 wherein said first transmission and said second transmission are geared; or the first transmission part and the second transmission part are in transmission connection through a friction wheel.
5. The intravascular ultrasound retraction device according to claim 1 wherein said operating member further comprises a button disposed on said connecting rod for depressing control of movement of said connecting rod.
6. The intravascular ultrasound retraction device according to claim 1, further comprising a displacement sensor disposed on said base, said displacement sensor configured to detect displacement of said first sleeve in a vertical direction relative to said second sleeve.
7. The intravascular ultrasound retraction device according to claim 1 wherein the lead angle of said helical ramp is greater than or equal to 20 ° and less than or equal to 40 °.
8. The intravascular ultrasound retraction device according to claim 7 wherein the lead angle of said helical ramp is greater than or equal to 30 ° and less than or equal to 35 °.
9. The intravascular ultrasound retraction device according to claim 1, further comprising a sensor assembly for detecting a motion state and/or an operational state of the intravascular ultrasound retraction device.
10. The intravascular ultrasound retraction device according to claim 9 wherein said sensor assembly comprises a coded detection assembly comprising a code wheel and a read head, said code wheel being disposed on said second transmission portion and said read head being disposed on said base, said coded detection assembly for feeding back a retraction speed and distance of said intravascular ultrasound retraction device.
11. The intravascular ultrasound retraction device according to claim 9 wherein said sensor assembly comprises a motion detection assembly, said motion detection assembly being mounted on said base; the movement detection assembly includes a movement detection piece provided on a movement path of the operation member for detecting a movement state of the operation member.
12. The intravascular ultrasound retraction device according to claim 9 wherein said sensor assembly comprises a clutch detection assembly configured to detect relative proximity or distal of said first and second sleeves; the clutch detection assembly is arranged on the base, or the clutch detection assembly is arranged on the second sleeve.
13. An intravascular ultrasound retrieval system comprising a base and an intravascular ultrasound retrieval device according to any one of claims 1 to 12, the intravascular ultrasound retrieval device being mounted on the base.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111136817.8A CN113576535B (en) | 2021-09-27 | 2021-09-27 | Intravascular ultrasound retraction device and system |
| CN202210094180.9A CN114569160A (en) | 2021-09-27 | 2021-09-27 | Intravascular ultrasound retraction device and system |
| PCT/CN2022/089702 WO2023045329A1 (en) | 2021-09-27 | 2022-04-28 | Intravascular ultrasound retraction apparatus and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111136817.8A CN113576535B (en) | 2021-09-27 | 2021-09-27 | Intravascular ultrasound retraction device and system |
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| CN202210094180.9A Division CN114569160A (en) | 2021-09-27 | 2021-09-27 | Intravascular ultrasound retraction device and system |
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| CN113576535A CN113576535A (en) | 2021-11-02 |
| CN113576535B true CN113576535B (en) | 2022-03-08 |
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| CN202210094180.9A Pending CN114569160A (en) | 2021-09-27 | 2021-09-27 | Intravascular ultrasound retraction device and system |
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| WO (1) | WO2023045329A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113576535B (en) * | 2021-09-27 | 2022-03-08 | 深圳北芯生命科技股份有限公司 | Intravascular ultrasound retraction device and system |
| CN114391880A (en) * | 2022-01-26 | 2022-04-26 | 深圳北芯生命科技股份有限公司 | Retraction device and intravascular ultrasound device comprising same |
| CN114176643B (en) * | 2022-02-17 | 2022-04-26 | 天津恒宇医疗科技有限公司 | Intravascular ultrasonic imaging withdrawing device |
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Also Published As
| Publication number | Publication date |
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| CN114569160A (en) | 2022-06-03 |
| WO2023045329A1 (en) | 2023-03-30 |
| CN113576535A (en) | 2021-11-02 |
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