Retraction device and intravascular ultrasound system

Abstract

The utility model discloses a withdrawing device and an intravascular ultrasound system, comprising: a base assembly comprising a conducting strip and a first lead; the first wire is connected to the conducting strip, and the conducting strip is provided with a sliding groove. The sliding assembly is provided with a signal input end and a signal output end; the signal input end is used for fixing an ultrasonic catheter and can receive information collected by withdrawing the ultrasonic catheter; the signal output end can be in sliding fit with and electrically connected with the sliding groove. The driving assembly is used for driving the sliding assembly to slide along the sliding groove, so that information collected by the retracement ultrasonic catheter is sequentially transmitted to a signal processing unit of an intravascular ultrasonic system from the signal input end, the signal output end and the conducting strip through the first wire. According to the technical scheme, the first wire for outputting the signal is arranged on the base assembly, external extra gravity and resistance of the sliding assembly caused by the signal output wire are eliminated, the stability of the sliding assembly in the withdrawing device and the signal transmission stability are improved, and therefore the imaging quality stability is improved.

Description

Technical Field

[0001] This utility model relates to the field of intravascular ultrasound technology, and in particular to a retraction device and an intravascular ultrasound system. Background Technology

[0002] Intravascular ultrasound (IVUS) is a medical imaging technique that combines non-invasive ultrasound technology with invasive catheter technology, using a special catheter with an ultrasound probe attached to its end. IVUS inserts a miniaturized ultrasound transducer into the cardiovascular cavity through a cardiac catheter to display the cross-sectional morphology and / or blood flow patterns of the cardiovascular system. It mainly includes ultrasound imaging technology and Doppler flow measurement. Based on angiography, the blood vessel and lesion site to be examined are selected. Taking the coronary artery as an example, a guiding catheter is placed at the coronary ostium, and a guide wire is advanced to the distal end of the target vessel. The IVUS catheter is then advanced along the guide wire to the distal end of the lesion site to be examined. Generally, the examination is performed by continuously withdrawing the catheter from the distal end to the proximal end of the target vessel at a certain speed, and then focusing on the area of ​​interest.

[0003] The intravascular ultrasound imaging system includes an ultrasound catheter, a retraction device, and a signal processing unit. The retraction device, as the main component of the intravascular ultrasound imaging system, enables the retraction of the ultrasound catheter. In traditional retraction devices, the lead wire of the retraction body is used to transmit the signal. However, due to its weight and unreasonable arrangement, there is a risk of jamming during the signal acquisition process or the retraction device falling due to a change in the center of gravity, which affects the imaging quality of the intravascular ultrasound system terminal. Utility Model Content

[0004] In view of this, the present invention provides a retraction device, which sets the first wire of the output signal on the base assembly to avoid the wire affecting the movement stability of the sliding assembly (i.e., the retraction body), improves the accuracy of signal collection, and thus improves the imaging quality of the intravascular ultrasound system terminal.

[0005] This invention also provides an intravascular ultrasound system including the above-mentioned retraction device.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A retraction device for use in an intravascular ultrasound system, comprising:

[0008] The base assembly includes a conductive sheet and a first wire; the first wire is connected to the conductive sheet, and the conductive sheet has a groove.

[0009] A sliding assembly has a signal input end and a signal output end; the signal input end is used to fix the ultrasound catheter and can receive information collected by retracting the ultrasound catheter; the signal output end can slide and be electrically connected to the sliding groove.

[0010] A driving component is provided to drive the sliding component to slide along the groove so that the information collected by the retracted ultrasound catheter is transmitted sequentially from the signal input end, the signal output end and the conductive sheet through the first wire to the signal processing unit of the intravascular ultrasound system.

[0011] Preferably, the sliding assembly includes: a housing assembly and a slider assembly;

[0012] The slider assembly has a slider input end and a slider output end, and the slider output end is the signal output end;

[0013] The housing assembly includes: a housing body having an ultrasound catheter connection port; the ultrasound catheter connection port is the signal input end, used to fix the ultrasound catheter, and capable of receiving information collected by retracting the ultrasound catheter; the housing body also has a housing output end for transmitting the information collected by the ultrasound catheter to the slider input end;

[0014] The driving component is used to drive the main body of the box to cause the slider output end of the slider assembly to slide within the slide groove.

[0015] Preferably, the slider assembly includes: a slider base, a bracket, and a transmission module;

[0016] The transmission module includes: a conductive bead, a conductive spring, and a conductive contact piece;

[0017] The slider base is connected to the main body of the box via the bracket, and the slider base has a through hole along its axial direction; the first end of the conductive contact is disposed in the through hole, and the second end of the conductive contact passes through the peripheral wall of the slider base and is connected to the output end of the box.

[0018] One end of the conductive spring abuts against the first end of the conductive contact piece, and the other end abuts against the conductive bead. The conductive bead can slide with the groove and is electrically connected.

[0019] The slider base is an insulating base.

[0020] Preferably, the transmission module further includes: a preload bolt;

[0021] The first end of the conductive contact divides the through hole into an upper through portion and a lower through portion;

[0022] The pre-tightening bolt is assembled inside the upper through portion, and the pre-tightening bolt abuts against the upper end face of the first end of the conductive contact piece; the lower through portion is equipped with the conductive bead and the conductive spring.

[0023] Preferably, the transmission module further includes: a second wire;

[0024] The second end of the conductive contact is connected to the output end of the housing via the second wire.

[0025] Preferably, the number of transmission modules is multiple sets, and the multiple sets of transmission modules are arranged circumferentially around the slider base;

[0026] The conductive sheet and the first wire constitute a base conductive module, and the number of the base conductive modules corresponds one-to-one with the number of the multiple sets of transmission modules.

[0027] The conductive beads of each group of transmission modules are slidably engaged with and electrically connected to the grooves of the corresponding conductive sheets, and the conductive contacts of each group of transmission modules are connected to the output end of the housing.

[0028] In each group, the first wire of the base conductive module is connected to the signal processing unit of the intravascular ultrasound system.

[0029] Preferably, the base assembly further includes: a fixing plate and an insulating pad;

[0030] The groove is formed on the upper surface of the conductive sheet, and the lower surface of the conductive sheet is fixed to the fixing plate by the insulating pad.

[0031] Preferably, the drive assembly includes: a motor, a rack and pinion, and a gear;

[0032] The motor is fixed to the bottom of the sliding assembly, the rack is disposed on the fixed plate, and the length direction of the slide groove is parallel to the rack;

[0033] The output end of the motor is provided with a gear that meshes with the rack.

[0034] Preferably, the drive component further includes: a mounting base;

[0035] The motor is fixed to the bottom of the sliding assembly 1 by a mounting bracket.

[0036] An intravascular ultrasound system includes: the aforementioned retraction device.

[0037] As can be seen from the above technical solution, the retraction device provided by this utility model sets the first wire of the output signal on the base assembly, avoiding the wire being set on the sliding assembly (which would affect the movement stability of the retraction body). At the same time, it reduces the weight of the sliding assembly, eliminates the external additional gravity and resistance caused by the output signal wire, improves the stability of the sliding assembly and the signal transmission stability in the retraction device, thereby improving the stability of the imaging quality.

[0038] This invention also provides an intravascular ultrasound system. Due to the adoption of the above-mentioned retraction device, it has corresponding beneficial effects, which can be referred to in the previous description and will not be repeated here. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 A schematic diagram of the overall structure of the retraction device provided in this embodiment of the utility model;

[0041] Figure 2 This is a schematic diagram of the structure of the cooperation between the sliding component and the driving component provided in an embodiment of the present utility model;

[0042] Figure 3 This is a schematic diagram of the overall structure of the slider assembly provided in an embodiment of the present utility model;

[0043] Figure 4 for Figure 3 A cross-sectional view from the perspective of AA;

[0044] Figure 5 A side view of the retraction device provided in an embodiment of this utility model.

[0045] The meanings of the various reference numerals in the figure are as follows:

[0046] 10 is the base assembly, 11 is the conductive sheet, 12 is the first wire, 13 is the slide groove, 14 is the fixing plate, 15 is the insulating pad, and 16 is the first wire sleeve;

[0047] 20 is a sliding component, 21 is a housing component, 211 is the housing body, 212 is an ultrasonic catheter connection port, and 213 is the housing output end; 22 is a slider component, 221 is a slider base, 222 is a bracket, 223 is a conductive bead, 224 is a conductive spring, 225 is a conductive contact, 226 is a through hole, 227 is a preload bolt, 228 is a second wire, and 229 is a second wire sleeve;

[0048] 30 is the drive component, 31 is the motor, 32 is the rack, 33 is the gear, and 34 is the mounting base. Detailed Implementation

[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0050] The retraction device provided in this embodiment of the invention is applied to an intravascular ultrasound system, such as... Figures 1-5 As shown, it includes:

[0051] The base assembly 10 includes a conductive sheet 11 and a first wire 12; the first wire 12 is connected to the conductive sheet 11, and the conductive sheet 11 has a groove 13.

[0052] The sliding component 20 has a signal input end and a signal output end; the signal input end is used to fix the ultrasonic catheter and can receive information collected by retracting the ultrasonic catheter; the signal output end can slide and be electrically connected to the sliding groove 13.

[0053] The driving component 30 is used to drive the sliding component 20 to slide along the slide groove 13 so that the information collected by the retracted ultrasound catheter is transmitted sequentially from the signal input end, the signal output end and the conductive sheet 11 through the first wire 12 to the signal processing unit of the intravascular ultrasound system, and then the intravascular ultrasound image is generated after the signal processing unit.

[0054] In the above technical solution, the information acquired by the retracted ultrasound catheter is transmitted sequentially from the signal input end, signal output end, and conductive sheet 11 to the signal processing unit of the intravascular ultrasound system via the first wire 12. In this process, compared with the prior art, the signal transmission is achieved by utilizing the contact between various components, and the first wire 12 for output signal is set on the base assembly 10, avoiding the first wire 12 being set on the sliding assembly 20, reducing the weight of the sliding assembly 20, and eliminating its external additional gravity and resistance, thereby improving the stability of the sliding assembly 20 and the signal transmission stability in the retraction device, and thus improving the stability of imaging quality.

[0055] In one possible embodiment, such as Figure 1 and Figure 2 As shown, the sliding component 20 includes: a box component 21 and a slider component 22;

[0056] The slider assembly 22 has a slider input end and a slider output end, and the slider output end is a signal output end;

[0057] The housing assembly 21 includes: a housing body 211, the housing body 211 having an ultrasonic catheter connection port 212; the ultrasonic catheter connection port 212 is a signal input end, the ultrasonic catheter connection port 212 is used to fix the ultrasonic catheter, and can receive information collected by retracting the ultrasonic catheter; the housing body 211 also has a housing output end 213 that transmits the information collected by the ultrasonic catheter to the slider input end.

[0058] The driving component 30 is used to drive the main body 211 of the box to drive the slider output end of the slider assembly 22 to slide in the groove 13. During the sliding process, the slider output end transmits the signal to the groove 13 of the conductive sheet 11, and the conductive sheet 11 transmits the signal to the signal processing unit.

[0059] In the above technical solution, the driving component 30 drives the housing body 211 to retract the ultrasound catheter connected to the ultrasound catheter connection port 212. During the retraction of the ultrasound catheter, the acquisition end of the ultrasound catheter acquires the corresponding vascular information. The corresponding vascular information is transmitted sequentially through the housing body 211 and the slider assembly 22 to the signal processing unit of the intravascular ultrasound system. In this way, the signal transmission can be completed using the various components of the housing body 211, avoiding the use of redundant cables. Preferably, the housing assembly 21 also includes a housing signal module for processing and converting the information received by the ultrasound catheter connection port 212, and then transmitting it to the housing output end 213.

[0060] Optimize the above technical solutions, such as Figures 2-4 As shown, the slider assembly 22 includes: a slider base 221, a bracket 222, and a transmission module;

[0061] The transmission module includes: a conductive bead 223, a conductive spring 224, and a conductive contact 225;

[0062] The slider base 221 is connected to the box body 211 via the bracket 222, so that the drive assembly 30 drives the box body 211 to move while driving it to move synchronously. The slider base 221 has a through hole 226 along its axial direction. The first end of the conductive contact 225 is disposed in the through hole 226, and the second end of the conductive contact 225 passes through the peripheral wall of the slider base 221 and is connected to the box output end 213.

[0063] One end of the conductive spring 224 abuts against the first end of the conductive contact 225, and the other end abuts against the conductive bead 223. The conductive bead 223 can slide and be electrically connected with the slide groove 13. Preferably, the conductive bead 223 can slide and roll at the same time.

[0064] Among them, the slider base 221 is an insulated base to prevent leakage of electrical signals.

[0065] In the above technical solution, the signal output from the box output terminal 213 passes sequentially through the conductive contact 225, the conductive spring 224 and the conductive bead 223, and then is transmitted from the slide groove 13 to the first wire 12. During this process, the contact between the conductive contact 225, the conductive spring 224, the conductive bead 223 and the slide groove 13 plays the role of transmitting electrical signals, reducing the use of redundant cables and avoiding instability in the movement of the slider assembly.

[0066] Further optimization of the above technical solutions, such as Figure 4 As shown, the transmission module also includes: a preload bolt 227;

[0067] The first end of the conductive contact 225 divides the through hole 226 into an upper through part and a lower through part;

[0068] The preload bolt 227 is assembled in the upper through part and abuts against the upper end face of the first end of the conductive contact piece 225; the lower through part is equipped with a conductive bead 223 and a conductive spring 224; one end of the conductive spring 224 abuts against the lower end face of the first end of the conductive contact piece 225, and the other end abuts against the conductive bead 223; it should be noted that the upper through part of the through hole 226 is provided with a thread that mates with the preload bolt 227.

[0069] In the above technical solution, the pre-tightening bolt 227 plays a role in pre-tightening and fixing, preventing the passage between the conductive bead 223, the conductive spring 224 and the conductive contact 225 from being broken. It can be understood that by tightening the pre-tightening bolt 227 with an appropriate pre-tightening force, the conductive contact 225 is connected to the conductive spring 224, while the conductive spring 224 is in full contact with the conductive bead 223, and the conductive bead 223 is also in full contact with the groove 13 of the conductive sheet 11 and makes sliding contact during the movement, so that the electrical signal can be transmitted to the conductive sheet 11.

[0070] Further optimization of the above technical solutions, such as Figure 2 As shown, the transmission module also includes: a second wire 228;

[0071] The second end of the conductive contact 225 is connected to the output end 213 of the housing via the second wire 228. The second wire 228 is used to realize the transmission of signals inside the sliding component 20, and the second wire 228 can move with the slider component 22 without affecting the movement stability of the sliding component 20.

[0072] Further optimization of the above technical solutions, such as Figure 3 As shown, there are multiple sets of transmission modules, which are arranged around the circumference of the slider base 221. It can be understood that the slider base 221 has a number of through holes 226 corresponding to the number of transmission modules.

[0073] The conductive sheet 11 and the first wire 12 constitute the base conductive module, and the number of the base conductive modules corresponds one-to-one with the number of multiple sets of transmission modules.

[0074] The conductive beads 223 of each group of transmission modules are slidably engaged with and electrically connected to the grooves 13 of the corresponding conductive sheets 11, and the conductive contacts 225 of each group of transmission modules are connected to the output end 213 of the box.

[0075] The first wire 12 of each group of base conductive modules is connected to the signal processing unit of the intravascular ultrasound system.

[0076] In the above technical solution, the arrangement of multiple sets of base conductive modules and multiple sets of transmission modules constitutes multiple electrical signal channels. This arrangement allows multiple electrical signal channels to be transmitted to the signal processing unit without interference. It should be noted that the information transmitted by each electrical signal channel is different.

[0077] In one possible embodiment, such as Figure 1 As shown, the base assembly 10 also includes: a fixing plate 14 and an insulating pad 15;

[0078] The groove 13 is formed on the upper surface of the conductive sheet 11, and the lower surface of the conductive sheet 11 is fixed to the fixing plate 14 by the insulating pad 15. The insulating pad 15 prevents the leakage of electrical signals on the conductive sheet 11 and improves the accuracy of electrical signal transmission. Preferably, the insulating pad 15 can prevent the electrical signals between the conductive sheets 11 from interfering with each other.

[0079] Optimize the above technical solutions, such as Figure 1 and Figure 2 As shown, the drive assembly 30 includes: a motor 31, a rack 32, and a gear 33;

[0080] The motor 31 is fixed to the bottom of the sliding assembly 20, the rack 32 is set on the fixed plate 14, and the length direction of the slide groove 13 is parallel to the rack 32. It can be understood that the length direction of the slide groove 13 is the sliding direction of the sliding assembly 20.

[0081] The output end of the motor 31 is provided with a gear 33 that meshes with the rack 32.

[0082] In the above technical solution, when the retraction device needs to retract, the motor 31 starts. The motor 31 uses gear 33 and rack 32 to mesh and drive, so that the sliding component 20 retracts along the length of the slide groove 13. It should also be noted that after the retraction is completed, the sliding component 20 can be returned to its original position as needed (that is, under the action of the motor 31, the sliding component 20 can move back and forth along the length of the slide groove 13).

[0083] To further optimize the above technical solution, the drive component 30 also includes: a mounting base 34;

[0084] The motor 31 is fixed to the bottom of the sliding assembly 20 by the mounting base 34. The mounting base 34 makes the connection between the motor 31 and the bottom of the sliding assembly 20 more secure.

[0085] In one embodiment, multiple first conductors 12 are wrapped by a first conductor sleeve 16, and multiple second conductors 228 are wrapped by a second conductor sleeve 229, wherein both the first conductors 12 and the second conductors 228 are cables.

[0086] This utility model also provides an intravascular ultrasound system, including: the retraction device as described above. Because this solution uses the aforementioned retraction device, it has corresponding beneficial effects, as detailed in the preceding description, which will not be repeated here.

[0087] The technical features mentioned above, those to be mentioned below, and those shown individually in the accompanying drawings can be combined arbitrarily, provided that the combined technical features are not contradictory. All feasible combinations of features are the technical content explicitly described herein. Any one of the multiple sub-features contained in the same statement can be applied independently, without necessarily being applied together with other sub-features.

[0088] Key points and areas to be protected in this plan:

[0089] 1. The first wire is distributed on the fixed base assembly, and the sliding assembly is not affected by the gravity and resistance of the external cable (i.e., the first wire);

[0090] 2. Wireless multi-channel electrical signal transmission is achieved between the box assembly and the slider assembly.

[0091] Advantages of this solution:

[0092] The advantage of this solution lies in its optimized structure, moving the external cable to the base assembly. This resolves the issue of motion obstruction and inaccurate signal transmission caused by uncontrollable factors such as gravity and resistance from the external cable in the IVUS motion structure, thus affecting image quality. Simultaneously, it reduces the weight of the sliding assembly, making it easier for operators to use. Compared to existing technologies, the cable-free sliding assembly is lighter and reduces resistance during retraction, improving the stability of the image signal transmitted by the ultrasound catheter and ultimately enhancing image quality.

[0093] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0094] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not 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

1. A retraction device for use in an intravascular ultrasound system, characterized in that, include: The base assembly (10) includes a conductive sheet (11) and a first wire (12); the first wire (12) is connected to the conductive sheet (11), and the conductive sheet (11) has a groove (13). The sliding component (20) has a signal input end and a signal output end; the signal input end is used to fix the ultrasonic catheter and can receive information collected by retracting the ultrasonic catheter; the signal output end can slide and be electrically connected to the sliding groove (13); A drive assembly (30) is used to drive the sliding assembly (20) to slide along the groove (13) so that the information collected by the retracted ultrasound catheter is transmitted sequentially from the signal input end, the signal output end and the conductive sheet (11) through the first wire (12) to the signal processing unit of the intravascular ultrasound system.

2. The retraction device according to claim 1, characterized in that, The sliding assembly (20) includes: a housing assembly (21) and a slider assembly (22); The slider assembly (22) has a slider input end and a slider output end, wherein the slider output end is the signal output end; The housing assembly (21) includes: a housing body (211), the housing body (211) having an ultrasound catheter connection port (212); the ultrasound catheter connection port (212) is the signal input end, the ultrasound catheter connection port (212) is used to fix the ultrasound catheter, and is capable of receiving information collected by withdrawing the ultrasound catheter; the housing body (211) also has a housing output end (213) that transmits the information collected by the ultrasound catheter to the slider input end. The drive assembly (30) is used to drive the main body of the box (211) to cause the slider output end of the slider assembly (22) to slide in the groove (13).

3. The retraction device according to claim 2, characterized in that, The slider assembly (22) includes: a slider base (221), a bracket (222), and a transmission module; The transmission module includes: a conductive bead (223), a conductive spring (224), and a conductive contact (225); The slider base (221) is connected to the box body (211) through the bracket (222), and the slider base (221) has a through hole (226) along its axial direction; the first end of the conductive contact (225) is disposed in the through hole (226), and the second end of the conductive contact (225) passes through the peripheral wall of the slider base (221) and is connected to the box output end (213); One end of the conductive spring (224) abuts against the first end of the conductive contact (225), and the other end abuts against the conductive bead (223). The conductive bead (223) can slide and be electrically connected with the groove (13). The slider base (221) is an insulating base.

4. The retraction device according to claim 3, characterized in that, The transmission module also includes: a preload bolt (227); The first end of the conductive contact (225) divides the through hole (226) into an upper through portion and a lower through portion; The preload bolt (227) is assembled inside the upper through part, and the preload bolt (227) abuts against the upper end face of the first end of the conductive contact (225); the lower through part is equipped with the conductive bead (223) and the conductive spring (224).

5. The retraction device according to claim 3, characterized in that, The transmission module further includes: a second wire (228); The second end of the conductive contact (225) is connected to the output end (213) of the housing via the second wire (228).

6. The retraction device according to any one of claims 3-5, characterized in that, The number of transmission modules is multiple sets, and the multiple sets of transmission modules are arranged circumferentially around the slider base (221); The conductive sheet (11) and the first wire (12) constitute a base conductive module, and the number of the base conductive modules corresponds one-to-one with the number of the multiple sets of transmission modules; The conductive beads (223) of each group of transmission modules are slidably engaged with and electrically connected to the grooves (13) of the corresponding conductive sheets (11), and the conductive contacts (225) of each group of transmission modules are connected to the output end (213) of the box. In this case, the first wire (12) of each group of base conductive modules is connected to the signal processing unit of the intravascular ultrasound system.

7. The retraction device according to claim 1, characterized in that, The base assembly (10) further includes: a fixing plate (14) and an insulating pad (15); The groove (13) is formed on the upper surface of the conductive sheet (11), and the lower surface of the conductive sheet (11) is fixed to the fixing plate (14) by the insulating pad (15).

8. The retraction device according to claim 7, characterized in that, The drive assembly (30) includes: a motor (31), a rack (32), and a gear (33); The motor (31) is fixed to the bottom of the sliding assembly (20), the rack (32) is disposed on the fixed plate (14), and the length direction of the groove (13) is parallel to the rack (32); The output end of the motor (31) is provided with a gear (33) that meshes with the rack (32).

9. The retraction device according to claim 8, characterized in that, The drive assembly (30) further includes: a mounting base (34); The motor (31) is fixed to the bottom of the sliding assembly (20) by a mounting base (34).

10. An intravascular ultrasound system, characterized in that, include: The retraction device as described in any one of claims 1-9.

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