CN217365913U

CN217365913U - Automatic withdrawing device for intravascular ultrasound catheter

Info

Publication number: CN217365913U
Application number: CN202220673719.1U
Authority: CN
Inventors: 李银
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-09-06
Anticipated expiration: 2032-03-25

Abstract

The utility model discloses an automatic withdrawing device for an intravascular ultrasound catheter, which relates to the field of medical auxiliary appliances and comprises a casing, a withdrawing mechanism, a first pipe clamp, a second pipe clamp, an extension piece and a positioning mechanism, wherein a guide piece in the withdrawing mechanism is connected with the first pipe clamp and is used for withdrawing the first pipe clamp, the first pipe clamp is used for fixing the ultrasound catheter, the extension piece is connected in a guide pipe arranged in the casing in a sliding way and is used for adjusting the distance between a Y valve in the ultrasound catheter and the first pipe clamp, the positioning mechanism is arranged on the side surface of the casing and is used for fixing the extension piece and a guide wire in the ultrasound catheter, the utility model simplifies the structural design of the withdrawing device, is easy to operate, the length of the extension piece is adjustable, so that the distance between the Y valve and the first pipe clamp can be adjusted as required, and the positioning of the extension piece can be realized by the positioning mechanism, and the device can also be used for assisting in fixing and guiding the guide wire, so that the convenience of withdrawing the ultrasonic catheter is improved.

Description

Automatic withdrawing device for intravascular ultrasound catheter

Technical Field

The utility model belongs to the field of medical auxiliary appliances, concretely relates to an automatic withdrawing device for intravascular ultrasound catheter.

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. Although the existing withdrawing device has high precision, the existing withdrawing device has the defects of complicated operation process and high learning cost, and medical staff is required to manually guide the guide wire in the finger-controlled ultrasonic catheter in the withdrawing process of the catheter, so that the guide wire and the catheter are prevented from being withdrawn together, and the operation is inconvenient.

Disclosure of Invention

An object of the utility model is to provide an automatic withdrawing device for intravascular ultrasound catheter to solve the above-mentioned defect that leads to among the prior art.

The automatic withdrawing device for the intravascular ultrasound catheter comprises a shell, a withdrawing mechanism, a first pipe clamp, a second pipe clamp, an extending part and a positioning mechanism, wherein the withdrawing mechanism is installed in the shell, a guide part in the withdrawing mechanism is connected with the first pipe clamp and used for withdrawing the first pipe clamp, the first pipe clamp is used for fixing the ultrasound catheter, the extending part is connected in a guide pipe arranged in the shell in a sliding mode and used for adjusting the distance between a Y valve in the ultrasound catheter and the first pipe clamp, the second pipe clamp is installed at the outer end of the extending part by means of a fixing block and used for fixing the Y valve, a plurality of positioning holes matched with the positioning mechanism are formed in the side face of the extending part, and the positioning mechanism is installed on the side face of the shell and used for guiding and fixing the extending part and a guide wire in the ultrasound catheter.

Preferably, the withdrawing mechanism comprises a guide piece, a traction rope, a guide wheel, a winding wheel and a driving motor, the guide piece is connected to the slide rail at the upper end of the guide pipe in a sliding mode through a sliding block, a guide hole matched with the guide piece is formed in a top cover of the machine shell, one end of the traction rope is connected to the guide piece, the other end of the traction rope bypasses the guide wheel and is wound on the winding wheel, the guide wheel is installed on a bearing seat on the machine shell through a rotating shaft and a bearing, and the winding wheel is installed at the output end of the driving motor.

Preferably, the positioning mechanism comprises a base, a sliding part, a positioning pin, a pull rod, a first return spring, a fixing plate and a movable plate, the base is fixed on one side of the shell, which faces the second pipe clamp, the sliding part is connected in a sliding groove formed in the base in a sliding mode, the positioning pin is fixed at one end of the sliding part, the other end of the sliding part is connected to the pull rod, the pull rod is connected to the base at one end of the sliding groove in a sliding mode, the return spring is sleeved on the pull rod of the sliding part and the base support and used for resetting of the sliding part, the fixing plate is arranged at one end, which faces the extending part, of the upper portion of the base, the guide hole is formed in the upper end of the base, the movable plate is fixed at the upper end of the sliding part and can be connected in the guide hole in a sliding mode, and an anti-slip block is arranged at one side, which faces the movable plate, of the upper end of the fixing plate.

Preferably, the first pipe clamp and the second pipe clamp are identical in structure composition and respectively comprise a fixed clamping part, a movable clamping part and a second reset spring, the fixed clamping part is hinged to the movable clamping part, positioning columns for positioning the second reset spring are arranged on the fixed clamping part and the movable clamping part, and two ends of the second reset spring are sleeved on the positioning columns and located between the fixed clamping part and the movable clamping part.

Preferably, the tail end of the pull rod is connected with a handle.

The utility model has the advantages that: the structure design of the withdrawing device is simplified, the operation is easy, the length of the extending piece is adjustable, so that the distance between the Y valve and the first pipe clamp can be adjusted as required, the positioning of the extending piece can be realized by means of a positioning mechanism, the extending piece can also be used for assisting in fixing and guiding a guide wire, and the withdrawing convenience of the ultrasonic catheter is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of fig. 1 with the top cover removed.

Fig. 3 is a schematic view of the positioning mechanism.

Figure 4 is a schematic view of a second pipe clamp.

The method comprises the following steps: the device comprises a machine shell, a top cover, a guide hole, a retracting mechanism, a guide part, a traction rope, a guide wheel, a winding wheel, a driving motor, a first pipe clamp, a second pipe clamp, a fixing block, a fixing clamping part, a fixed clamping part, a movable clamping part, a return spring II, a positioning column 53, an extension part 6, a positioning hole 60, a positioning mechanism 7, a base 70, a sliding part 71, a positioning pin 72, a pull rod 73, a return spring I, a fixing plate 74, a movable plate 76, a sliding groove 77, a guide hole 78, an anti-slip block 79, a handle 710, a guide pipe 8, a retracting switch 9, a stop switch 10 and a power switch 11.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1 to 4, an automatic withdrawing device for an intravascular ultrasound catheter comprises a housing 1, a withdrawing mechanism 3, a first pipe clamp 4, a second pipe clamp 5, an extending member 6 and a positioning mechanism 7, the withdrawing mechanism 3 is arranged in the machine shell 1, a guide piece 30 in the withdrawing mechanism 3 is connected with the first pipe clamp 4 and is used for withdrawing the first pipe clamp 4, the first pipe clamp 4 is used for fixing the ultrasonic catheter, the extension piece 6 is slidably connected in a guide tube 8 provided in the cabinet 1 and is used to adjust the distance between the Y-valve in the ultrasound catheter and the first tube clamp 4, the second pipe clamp 5 is mounted to the outer end of the extension member 6 by means of a fixing block 500 and serves to fix the Y-valve, the side of the extension piece 6 is provided with a plurality of positioning holes 60 matched with the positioning mechanism 7, and the positioning mechanism 7 is installed on the side of the casing 1 and used for fixing the extension piece 6 and the guide wire in the ultrasonic catheter. The first pipe clamp 4 and the second pipe clamp 5 are identical in structure composition and respectively comprise a fixed clamping part 50, a movable clamping part 51 and a second return spring 52, the fixed clamping part 50 is hinged to the movable clamping part 51, positioning columns 53 for positioning the second return spring 52 are arranged on the fixed clamping part 50 and the movable clamping part 51, and two ends of each return spring are sleeved on the positioning columns 53 and located between the fixed clamping part 50 and the movable clamping part 51. Other pipe clamps with similar clamping functions on the market can also be used.

The withdrawing mechanism 3 comprises a guide piece 30, a traction rope 31, a guide wheel 32, a winding wheel 33 and a driving motor 34, wherein the guide piece 30 is connected to a slide rail at the upper end of the guide pipe 8 in a sliding mode through a sliding block, a guide hole 20 matched with the guide piece 30 is formed in the top cover 2 of the machine shell 1, scale marks are arranged on the top cover 2 on one side of the guide hole 20, one end of the traction rope 31 is connected to the guide piece 30, the other end of the traction rope 31 bypasses the guide wheel 32 and is wound on the winding wheel 33, the guide wheel 32 is installed on a bearing seat on the machine shell 1 through a rotating shaft and a bearing, and the winding wheel 33 is installed at the output end of the driving motor 34. The retraction of the first tube clamp 4 and thus of the ultrasound catheter fixed to the first tube clamp 4 is effected by means of the drive motor 34. In order to realize automatic control, the driving motor 34 may be connected to a corresponding controller, and the corresponding retraction switch 9, the stop switch 10, the power switch 11, and the like may be disposed on the top cover 2, specifically, they may be disposed as required.

The positioning mechanism 7 comprises a base 70, a sliding part 71, a positioning pin 72, a pull rod 73, a first return spring 74, a fixed plate 75 and a movable plate 76, the base 70 is fixed on one side of the machine shell 1 facing the second pipe clamp 5, the sliding part 71 is slidably connected in a sliding groove 77 formed in the base 70, the positioning pin 72 is fixed at one end of the sliding part 71, the other end of the sliding part 71 is connected to a pull rod 73, the pull rod 73 is slidably connected to the base 70 at one end of the sliding groove 77, a first return spring 74 is sleeved on the pull rod 73 of the bracket of the sliding part 71 and the base 70 and is used for returning the sliding part 71, the fixing plate 75 is arranged at one end of the upper part of the base 70 facing the extension part 6, a guide hole 78 is formed at the upper end of the base 70, the movable plate 76 is fixed at the upper end of the sliding part 71 and can be slidably connected in the guide hole 78, and an anti-slip block 79 is arranged at one side of the upper end of the fixing plate 75 facing the movable plate 76. To facilitate the manipulation of the pull rod 73, a handle 710 is connected to the end of the pull rod 73.

The working principle of the utility model is as follows:

the first pipe clamp 4 is reset to be close to one end of the first pipe clamp 4, the pull rod 73 is pulled backwards, the extension piece 6 is unlocked, the extension piece 6 is pulled to be in a proper length, the pull rod 73 is loosened, the extension piece 6 is positioned by means of the positioning pin 72, meanwhile, the Y valve in the ultrasonic catheter is fixed on the second fixing clamp, the ultrasonic catheter is fixed on the first pipe clamp 4, the pull rod 73 is pulled backwards slightly, the anti-skid block 79 and the movable plate 76 are separated, the guide wire is placed between the two, and the pull rod 73 is loosened to clamp and fix the guide wire, so that the early preparation work for withdrawing the ultrasonic catheter can be completed.

Thereafter, the drive motor 34 is activated to perform the retraction operation of the ultrasonic catheter.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.

Claims

1. An automatic withdrawing device for an intravascular ultrasound catheter is characterized by comprising a machine shell (1), a withdrawing mechanism (3), a first pipe clamp (4), a second pipe clamp (5), an extending part (6) and a positioning mechanism (7), wherein the withdrawing mechanism (3) is installed in the machine shell (1), a guide part (30) in the withdrawing mechanism (3) is connected with the first pipe clamp (4) and used for withdrawing the first pipe clamp (4), the first pipe clamp (4) is used for fixing the ultrasound catheter, the extending part (6) is connected in a sliding manner in a guide pipe (8) arranged in the machine shell (1) and used for adjusting the distance between a Y valve in the ultrasound catheter and the first pipe clamp (4), the second pipe clamp (5) is installed at the outer end of the extending part (6) by means of a fixing block (500) and used for fixing the Y valve, a plurality of positioning holes (60) matched with the positioning mechanism (7) are formed in the side face of the extending part (6), the positioning mechanism (7) is arranged on the side surface of the shell (1) and is used for fixing the extending piece (6) and the guide wire in the ultrasonic catheter.

2. An automatic retraction device for an intravascular ultrasound catheter according to claim 1, wherein: the withdrawing mechanism (3) comprises a guide piece (30), a traction rope (31), a guide wheel (32), a winding wheel (33) and a driving motor (34), the guide piece (30) is connected to a slide rail at the upper end of a guide pipe (8) in a sliding mode through a slide block, a guide hole (20) matched with the guide piece (30) is formed in a top cover (2) of the machine shell (1), one end of the traction rope (31) is connected to the guide piece (30), the other end of the traction rope (31) bypasses the guide wheel (32) and is wound on the winding wheel (33), the guide wheel (32) is installed on a bearing seat on the machine shell (1) through a rotating shaft and a bearing, and the winding wheel (33) is installed at the output end of the driving motor (34).

3. An automatic retraction device for an intravascular ultrasound catheter according to claim 1, wherein: the positioning mechanism (7) comprises a base (70), a sliding part (71), a positioning pin (72), a pull rod (73), a first return spring (74), a fixed plate (75) and a movable plate (76), the base (70) is fixed on one side of the machine shell (1) facing the second pipe clamp (5), the sliding part (71) is connected in a sliding groove (77) formed in the base (70) in a sliding mode, the positioning pin (72) is fixed at one end of the sliding part (71), the other end of the sliding part (71) is connected to the pull rod (73), the pull rod (73) is connected to the base (70) at one end of the sliding groove (77) in a sliding mode, the first return spring (74) is sleeved on the pull rod (73) of the support of the sliding part (71) and the base (70) and used for resetting the sliding part (71), the fixed plate (75) is arranged on one end, facing the extending part (6), of the upper portion of the base (70), the upper end of the base (70) is provided with a guide hole (78), the movable plate (76) is fixed at the upper end of the sliding part (71) and can be connected in the guide hole (78) in a sliding way, and one side of the upper end of the fixed plate (75) facing the movable plate (76) is provided with an anti-slip block (79).

4. An automatic retraction device for an intravascular ultrasound catheter according to claim 1, wherein: the structure of first pipe clamp (4) and second pipe clamp (5) is constituteed the same, all includes fixed clamping part (50), activity clamping part (51) and reset spring two (52), fixed clamping part (50) and activity clamping part (51) are articulated each other, and all be provided with reference column (53) that are used for fixing a position reset spring two (52) on fixed clamping part (50), activity clamping part (51), reset spring's both ends cover is located on reference column (53) and is located between fixed clamping part (50), the activity clamping part (51).

5. An automatic retraction device for an intravascular ultrasound catheter according to claim 3, wherein: the tail end of the pull rod (73) is connected with a handle (710).