Catheter guide wire pushing device

Abstract

The utility model discloses a catheter and guide wire pushing device which comprises a machine frame, a pushing device suitable for clamping a catheter and guide wire and pushing the catheter and guide wire forwards under the action, a catheter and guide wire displacement twisting device and a braking device suitable for penetrating through the catheter and guide wire and braking the catheter and guide wire, and the catheter and guide wire displacement twisting device comprises a displacement assembly and a twisting assembly. The twisting assembly is connected with the displacement assembly, and the twisting assembly is suitable for penetrating through a catheter guide wire and is acted to enable the catheter guide wire to rotate in the circumferential direction; the displacement assembly is adapted to move the twisting assembly and the catheter guidewire thereon. The device can automatically push the catheter and the guide wire, emergency braking is carried out on the catheter and the guide wire under special conditions, and the safety coefficient and precision of an interventional operation are improved.

Description

Technical Field

[0001] The utility model relates to a catheter guide wire pushing device, belonging to the technical field of medical equipment. Background Art

[0002] Currently, vascular interventional surgery is an important treatment for cardiovascular and cerebrovascular diseases, significantly reducing trauma to the body compared to traditional surgical procedures. The typical vascular interventional procedure involves puncturing a superficial artery or vein with a needle. A guidewire and catheter are then inserted through the puncture site into the vascular system. The guidewire and catheter are then alternately advanced until the catheter reaches the target location. The catheter then serves as a conduit for delivering diagnostic and therapeutic devices and / or medications to the target site, thereby treating the lesion within the blood vessel. Common vascular interventional procedures include arterial occlusion recanalization and angioplasty. During vascular interventional surgery, the physician uses angiography and X-ray imaging to guide the catheter / guidewire through the blood vessels to the affected area, where it can then be used to diagnose and treat the lesion. Compared to traditional open surgery, vascular interventional surgery offers advantages such as smaller incisions, faster recovery, fewer complications, and a higher safety profile. However, this procedure also has significant disadvantages: the physician is exposed to radiation during the procedure, and even though they wear a lead vest, prolonged operation can still cause significant harm to the body. In addition, due to the complexity of the surgical operation and the long operation time, it will cause factors such as doctor fatigue and unstable manual operation, which will directly affect the quality of the operation. After searching, it was found that the Chinese patent with publication number CN211962780U discloses a catheter guiding device. In this patent, a catheter is inserted into the catheter guide groove, and the catheter guide diameter reducing section and the catheter head end fixing section guide the catheter movement direction and align the catheter with the centering groove. A guide wire is inserted into the guide wire guide groove, and the guide wire introduction section, transition section and guide wire limiting section guide the guide wire insertion direction and align the guide wire with the centering groove; the second structural member is covered on the first structural member, the catheter head end limiting section and the centering limiting section jointly limit the lateral deviation of the catheter head end, and the guide wire limiting section limits the movement of the guide wire; the locking pin member and the locking member are controlled by the opening and closing mechanism to lock or separate, thereby achieving the closing or opening of the first structural member and the second structural member. When the opening and closing mechanism is in the locked state, the elastic member has an elastic restoring force that drives the first structural member and the second structural member to move away from each other. When the opening and closing mechanism is in the unlocked state, the elastic member releases its elastic restoring force to separate the first structural member from the second structural member. However, this patent is still subject to the influence of the doctor's manual control and judgment, making it impossible to perform the task quickly and accurately in some cases, thereby affecting the efficiency of the operation. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a catheter guidewire pushing device, which can automatically push the catheter guidewire and perform emergency braking on the catheter guidewire in special circumstances, thereby improving the safety factor and accuracy of interventional surgery.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a catheter guidewire pushing device, comprising:

[0005] frame;

[0006] A pushing device adapted to grip the catheter guidewire and passively push it forward;

[0007] A catheter guidewire displacement and twisting device, comprising a displacement assembly and a twisting assembly, wherein the twisting assembly is connected to the displacement assembly, the twisting assembly being adapted to pass through the catheter guidewire and being actuated to cause the catheter guidewire to rotate circumferentially; the displacement assembly being adapted to move the twisting assembly and the catheter guidewire thereon;

[0008] A braking device suitable for passing a catheter guidewire and braking it.

[0009] Furthermore, in order to drive the catheter guidewire for delivery, the pushing device includes a first transmission wheel group and a second transmission wheel group, the first transmission wheel group includes a first transmission belt and two first transmission wheels adapted to be driven to rotate, the first transmission belt connecting the two first transmission wheels, the second transmission wheel group includes a second transmission belt and two second transmission wheels adapted to be driven to rotate, the second transmission belt connecting the two second transmission wheels, the first transmission wheel group and the second transmission wheel group are arranged opposite to each other, and a pushing channel is formed between the first transmission belt and the second transmission belt for passing through and clamping the catheter guidewire.

[0010] Furthermore, a tensioning assembly is provided between the first conveyor belt and the second conveyor belt, and the tensioning assembly is suitable for being actuated to adjust the size of the pushing channel.

[0011] The second gear wheel is engaged with the first gear and the second gear wheel is engaged with the first gear and the second gear wheel is engaged with the first gear and the second gear wheel is engaged with the first gear and the second gear wheel is engaged with the first gear and the second gear wheel is engaged with the first gear and the second gear wheel is engaged with the first gear and the second gear wheel.

[0012] Furthermore, the pushing device also includes a driving mechanism for driving the first transmission wheel and / or the second transmission wheel to rotate.

[0013] Furthermore, the first transmission wheel group and the second transmission wheel group are driven to rotate, thereby pushing the catheter guidewire. The driving mechanism includes a driving bracket, a second driving member, an inner ring gear, a driving wheel, a first driven wheel, a second driven wheel, a third driven wheel and a fourth driven wheel, wherein the inner ring gear is fixedly mounted on the driving bracket, the driving wheel is meshed with the inner ring gear, the second driving member is connected to the driving wheel, the first driven wheel and the second driven wheel are meshed with the driving wheels respectively, the third driven wheel and the fourth driven wheel are meshed with the inner ring gear respectively, the first driven wheel is adapted to be connected to one of the first transmission wheels, the second driven wheel is adapted to be connected to another of the first transmission wheels, the third driven wheel is adapted to be connected to one of the second transmission wheels, and the fourth driven wheel is adapted to be connected to another of the second transmission wheels.

[0014] Furthermore, in order to realize the movement of the twisting assembly in the X, Y and Z directions, the displacement assembly includes a Z-axis movable base, a Y-axis movable frame, an X-axis movable frame, a Y-axis movable drive mechanism, a Z-axis movable drive mechanism and an X-axis movable drive mechanism. The Z-axis movable base is slidably connected to the Y-axis movable frame, the Y-axis movable frame is slidably connected to the X-axis movable frame, and the X-axis movable frame is slidably connected to the frame. The twisting assembly is installed on the Z-axis movable base, the Y-axis movable drive mechanism is installed between the Y-axis movable frame and the X-axis movable frame, the Z-axis movable drive mechanism is installed between the Z-axis movable base and the Y-axis movable frame, and the X-axis movable drive mechanism is installed between the X-axis movable frame and the Z-axis movable base.

[0015] Furthermore, the twisting assembly includes three rollers arranged in a T-shape and a roller rotating mechanism connected to at least one of the rollers to drive the roller to rotate. A spiral structure is provided on the roller along the axial direction, and a twisting channel is formed between the three rollers to pass through the clamping catheter guide wire.

[0016] Furthermore, the braking device is installed on the frame, and the braking device is provided with a clamping channel, and the braking device is suitable for clamping the catheter guide wire extending from the twisting channel; the braking device is also provided with a brake, and the brake is installed in the clamping channel, and the brake is suitable for locking and stopping the pushing of the catheter guide wire when an abnormal pushing occurs.

[0017] After adopting the above technical solution, the utility model has the following beneficial effects:

[0018] In the present invention, the catheter guidewire is placed in a pushing channel formed by the first transmission wheel group and the second transmission wheel group, and the tension of the channel is adjusted by the tensioning assembly to adapt to catheter guidewires of different thicknesses;

[0019] The drive mechanism pushes the catheter guidewire forward, and the displacement assembly moves in three spatial directions (X, Y, and Z axes) to ensure the precise guidance of the catheter guidewire in the body. At the same time, the twisting assembly drives the catheter guidewire to rotate circumferentially, allowing the catheter guidewire to be delivered into the patient's blood vessels. When the catheter guidewire reaches the target location, the guidewire is removed, and the therapeutic drug is delivered to the target location through the catheter, thereby treating the lesion in the blood vessel.

[0020] During the pushing process, when the catheter guidewire has an abnormality during the pushing process, the brake can immediately lock the catheter guidewire, stop pushing and prevent further movement, thereby ensuring the safety of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional catheter guide wire pushing device of the utility model Figure 1 ;

[0022] Figure 2 A three-dimensional catheter guide wire pushing device of the utility model Figure 2 ;

[0023] Figure 3 This is a front view of a catheter guidewire pushing device of the present invention;

[0024] Figure 4 This is a left side view of a catheter guidewire pushing device of the present invention;

[0025] Figure 5 This is a schematic structural diagram of the catheter guidewire displacement and twisting device and the braking device of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the driving mechanism of the utility model. DETAILED DESCRIPTION

[0027] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0028] like Figure 1-6 As shown, a catheter guidewire pushing device includes:

[0029] Rack 1;

[0030] A pushing device adapted to grip the catheter guide wire 8 and be actuated to push it forward;

[0031] The catheter guidewire displacement and twisting device includes a displacement component and a twisting component. The twisting component is connected to the displacement component. The twisting component is suitable for passing through the catheter guidewire 8 and being actuated to cause the catheter guidewire 8 to rotate circumferentially. The displacement component is suitable for moving the twisting component and the catheter guidewire 8 thereon.

[0032] A braking device is suitable for passing through the catheter guide wire 8 and braking it.

[0033] Specifically, if Figure 1-3 As shown, the pushing device includes a first transmission wheel group and a second transmission wheel group. The first transmission wheel group includes a first conveyor belt 21 and two first transmission wheels 22 suitable for being driven to rotate. The first conveyor belt 21 connects the two first transmission wheels 22. The second transmission wheel group includes a second conveyor belt 23 and two second transmission wheels 24 suitable for being driven to rotate. The second conveyor belt 23 connects the two second transmission wheels 24. The first transmission wheel group and the second transmission wheel group are arranged opposite to each other. A pushing channel is formed between the first conveyor belt 21 and the second conveyor belt 23 for passing through the catheter guidewire 8 and clamping the catheter guidewire 8.

[0034] Specifically, a tensioning assembly is provided between the first conveyor belt 21 and the second conveyor belt 23 , and the tensioning assembly is adapted to be actuated to adjust the size of the pushing channel.

[0035] Specifically, if Figure 3 As shown, the tensioning assembly includes a tensioning block group, a first driving member, a driving wheel 35 and a tensioning rack group. The tensioning block group includes a first tensioning block 31 and a second tensioning block 32. The first tensioning block 31 is suitable for contacting the first conveyor belt 21, and the second tensioning block 32 is suitable for contacting the second conveyor belt 23. The tensioning rack group includes a first tensioning rack 33 and a second tensioning rack 34. The first tensioning rack 33 is installed on the first tensioning block 31, and the second tensioning rack 34 is installed on the second tensioning block 32. The driving wheel 35 is arranged between the first tensioning rack 33 and the second tensioning rack 34. The driving wheel 35 is engaged with the first tensioning rack 33 and the second tensioning rack 34. The first driving member is suitable for driving the driving wheel 35 to rotate. The driving of the first driving member causes the driving wheel 35 to drive the first tensioning rack 33 and the second tensioning rack 34 to move toward or away from each other, thereby driving the first tensioning block 31 and the second tensioning block 32 to approach or move away from each other, thereby adjusting the size of the pushing channel.

[0036] Specifically, the pushing device further includes a driving mechanism for driving the first transmission wheel 22 and / or the second transmission wheel 24 to rotate.

[0037] Specifically, if Figure 6As shown, the driving mechanism includes a driving bracket 41, a second driving member, an inner ring gear 42, a driving wheel 43, a first driven wheel 44, a second driven wheel 45, a third driven wheel 46 and a fourth driven wheel 47. The inner ring gear 42 is fixedly mounted on the driving bracket 41, the driving wheel 43 is engaged with the inner ring gear 42, the second driving member is connected to the driving wheel 43, the first driven wheel 44 and the second driven wheel 45 are engaged with the driving wheels 43 respectively, the third driven wheel 46 and the fourth driven wheel 47 are engaged with the inner ring gear 42 respectively, the first driven wheel 44 is suitable for being connected to one of the first transmission wheels 22, the second driven wheel 45 is suitable for being connected to the other first transmission wheel 22, the third driven wheel 46 is suitable for being connected to one of the second transmission wheels 24, and the fourth driven wheel 47 is suitable for being connected to the other second transmission wheel 24.

[0038] In this embodiment, the second driving member drives the driving wheel 43 to rotate counterclockwise, driving the inner ring gear 42 to rotate counterclockwise. The rotation of the inner ring gear 42 rotates counterclockwise through the third driven wheel 46 and the fourth driven wheel 47, thereby driving the two second transmission wheels 24 to rotate counterclockwise. The rotation of the driving wheel 43 drives the first driven wheel 44 and the second driven wheel 45 to rotate forward, thereby driving the two first transmission wheels 22 to rotate clockwise, pushing the catheter guidewire to be delivered in one direction.

[0039] Specifically, if Figure 1-5 As shown, the displacement assembly includes a Z-axis moving base 51, a Y-axis moving frame 52, an X-axis moving frame 53, a Y-axis moving drive mechanism, a Z-axis moving drive mechanism and an X-axis moving drive mechanism. The Z-axis moving base 51 is slidably connected to the Y-axis moving frame 52, the Y-axis moving frame 52 is slidably connected to the X-axis moving frame 53, and the X-axis moving frame 53 is slidably connected to the frame 1. The twisting assembly is installed on the Z-axis moving base 51, the Y-axis moving drive mechanism is installed between the Y-axis moving frame 52 and the X-axis moving frame 53, the Z-axis moving drive mechanism is installed between the Z-axis moving base 51 and the Y-axis moving frame 52, and the X-axis moving drive mechanism is installed between the X-axis moving frame 53 and the Z-axis moving base 51.

[0040] In this embodiment, the Z-axis movable base 51 can slide along the vertical direction (Z-axis), and its displacement in this direction can be adjusted by a Z-axis movable drive mechanism. The Y-axis movable frame 52 can slide along the horizontal direction (Y-axis), and its displacement in this direction can be adjusted by a Y-axis movable drive mechanism. The X-axis movable frame 53 can slide along the horizontal direction (X-axis), and its displacement in this direction can be adjusted by an X-axis movable drive mechanism. This structure enables the twisting assembly to move and position freely in three dimensions, providing flexible position adjustment capabilities for twisting operations.

[0041] Specifically, if Figure 5As shown, the twisting assembly includes three rollers 61 arranged in a finished shape and a roller rotating mechanism connected to at least one of the rollers 61 to drive the roller 61 to rotate. A spiral structure 62 is provided on the roller 61 along the axial direction, and a twisting channel is formed between the three rollers 61 to pass through the clamping catheter guide wire 8.

[0042] In this embodiment, each roller 61 has a spiral structure 62 distributed along its axial direction. This structure helps the roller 61 to apply rotational force and forward propulsion force to the passing material during rotation. When the catheter guidewire passes through the twisting channel, the rotation of the three rollers 61 and the spiral structure 62 act together on the catheter guidewire 8, causing it to rotate and move along a predetermined path, ensuring stable and precise guidance of the catheter guidewire 8 during the delivery process.

[0043] In this embodiment, the twisting assembly further includes a twisting mounting seat, three rollers 61 and a roller rotating mechanism are mounted on the twisting mounting seat, and the twisting mounting seat is slidably mounted on the Z-axis moving base 51 .

[0044] Specifically, if Figure 5 As shown, the braking device is mounted on the frame 1 and is provided with a clamping channel. The braking device is suitable for clamping the catheter guide wire 8 extending from the twisting channel.

[0045] The braking device is further provided with a brake 71 , which is installed in the clamping channel. The brake 71 is suitable for locking and stopping the catheter guide wire 8 when the catheter guide wire 8 is pushed abnormally.

[0046] In this embodiment, the brake 71 may be an electromagnetic brake. When the catheter guidewire encounters an obstacle or special circumstances during the pushing process, the brake 71 will lock the catheter guidewire to stop pushing.

[0047] In this embodiment, the catheter guidewire 8 is placed in a pushing channel formed by the first transmission wheel group and the second transmission wheel group, and the tension of the channel is adjusted by the tensioning assembly to accommodate catheter guidewires 8 of different thicknesses;

[0048] The driving mechanism pushes the catheter guidewire 8 forward, and the displacement assembly moves in three spatial directions (X, Y, and Z axes) to ensure the precise guidance of the catheter guidewire 8 in the body. At the same time, the twisting assembly drives the catheter guidewire 8 to rotate circumferentially, so that the catheter guidewire 8 is delivered into the patient's blood vessel. When the catheter guidewire 8 is delivered to the target location, the guidewire is removed, and the therapeutic drug is delivered to the target location through the catheter, thereby treating the lesion in the blood vessel.

[0049] During the pushing process, when an abnormality occurs in the catheter guide wire 8, the brake 71 can immediately lock the catheter guide wire 8, stop pushing and prevent further movement, thereby ensuring the safety of the operation.

[0050] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A catheter guidewire pushing device, characterized in that: include: Rack (1); A pushing device adapted to grip the catheter guide wire (8) and be actuated to push it forward; A catheter guidewire displacement and twisting device, comprising a displacement assembly and a twisting assembly, wherein the twisting assembly is connected to the displacement assembly, the twisting assembly is adapted to pass through a catheter guidewire (8) and be actuated to cause the catheter guidewire (8) to rotate circumferentially; the displacement assembly is adapted to move the twisting assembly and the catheter guidewire (8) thereon; A braking device is provided which is suitable for passing through a catheter guide wire (8) and braking the same.

2. A catheter guidewire pushing device according to claim 1, characterized in that: The pushing device includes a first transmission wheel group and a second transmission wheel group, the first transmission wheel group includes a first conveyor belt (21) and two first transmission wheels (22) suitable for being driven to rotate, the first conveyor belt (21) connects the two first transmission wheels (22), the second transmission wheel group includes a second conveyor belt (23) and two second transmission wheels (24) suitable for being driven to rotate, the second conveyor belt (23) connects the two second transmission wheels (24), the first transmission wheel group and the second transmission wheel group are arranged opposite to each other, and a pushing channel is formed between the first conveyor belt (21) and the second conveyor belt (23) for passing through the catheter guide wire (8) and clamping the catheter guide wire (8).

3. A catheter guidewire pushing device according to claim 2, characterized in that: A tensioning assembly is provided between the first conveyor belt (21) and the second conveyor belt (23), and the tensioning assembly is adapted to be actuated to adjust the size of the pushing channel.

4. A catheter guidewire pushing device according to claim 3, characterized in that: The tensioning assembly includes a tensioning block group, a first driving member, a driving wheel (35) and a tensioning rack group, the tensioning block group includes a first tensioning block (31) and a second tensioning block (32), the first tensioning block (31) is suitable for conflicting with the first conveyor belt (21), and the second tensioning block (32) is suitable for conflicting with the second conveyor belt (23), the tensioning rack group includes a first tensioning rack (33) and a second tensioning rack (34), the first tensioning rack (33) is installed on the first tensioning block (31), and the second tensioning rack (34) is installed on the second tensioning block (32) The driving wheel (35) is arranged between the first tensioning rack (33) and the second tensioning rack (34), and the driving wheel (35) is engaged with the first tensioning rack (33) and the second tensioning rack (34). The first driving member is suitable for driving the driving wheel (35) to rotate. The driving of the first driving member enables the driving wheel (35) to drive the first tensioning rack (33) and the second tensioning rack (34) to move toward or away from each other, thereby driving the first tensioning block (31) and the second tensioning block (32) to move closer to or away from each other, thereby adjusting the size of the pushing channel.

5. The catheter guidewire pushing device according to claim 2, characterized in that: The pushing device also includes a driving mechanism for driving the first transmission wheel (22) and / or the second transmission wheel (24) to rotate.

6. The catheter guidewire pushing device according to claim 5, characterized in that: The driving mechanism comprises a driving bracket (41), a second driving member, an inner ring gear (42), a driving wheel (43), a first driven wheel (44), a second driven wheel (45), a third driven wheel (46) and a fourth driven wheel (47), wherein the inner ring gear (42) is fixedly mounted on the driving bracket (41), the driving wheel (43) is meshed with the inner ring gear (42), the second driving member is connected to the driving wheel (43), the first driven wheel (44) and the second driven wheel (45) are connected to the respective The driving wheel (43) is meshed with the third driven wheel (46) and the fourth driven wheel (47) are respectively meshed with the inner ring gear (42), the first driven wheel (44) is suitable for being connected to one of the first transmission wheels (22), the second driven wheel (45) is suitable for being connected to the other first transmission wheel (22), the third driven wheel (46) is suitable for being connected to one of the second transmission wheels (24), and the fourth driven wheel (47) is suitable for being connected to the other second transmission wheel (24).

7. The catheter guidewire pushing device according to claim 1, characterized in that: The displacement assembly comprises a Z-axis movable base (51), a Y-axis movable frame (52), an X-axis movable frame (53), a Y-axis movable driving mechanism, a Z-axis movable driving mechanism and an X-axis movable driving mechanism. The Z-axis movable base (51) is slidably connected to the Y-axis movable frame (52), the Y-axis movable frame (52) is slidably connected to the X-axis movable frame (53), and the X-axis movable frame (53) is slidably connected to the frame (1). The twisting assembly is installed on the Z-axis movable base (51), the Y-axis movable driving mechanism is installed between the Y-axis movable frame (52) and the X-axis movable frame (53), the Z-axis movable driving mechanism is installed between the Z-axis movable base (51) and the Y-axis movable frame (52), and the X-axis movable driving mechanism is installed between the X-axis movable frame (53) and the Z-axis movable base (51).

8. The catheter guidewire pushing device according to claim 1, characterized in that: The twisting assembly comprises three rollers (61) arranged in a product shape and a roller rotating mechanism connected to at least one of the rollers (61) to drive the rollers (61) to rotate, a spiral structure (62) is provided on the rollers (61) along the axial direction, and a twisting channel is formed between the three rollers (61) to pass through the clamping catheter guide wire (8).

9. The catheter guidewire pushing device according to claim 8, characterized in that: The braking device is mounted on the frame (1), and is provided with a clamping channel. The braking device is suitable for clamping the catheter guide wire (8) extending from the twisting channel; The braking device is further provided with a brake (71), which is installed in the clamping channel. The brake (71) is suitable for locking and stopping the catheter guide wire (8) when the catheter guide wire (8) is pushed abnormally.

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