Developing ring crimping device

Abstract

The application relates to the technical field of medical devices, and provides a developing ring crimping device, which comprises a body, a core mold rotatably arranged on the body, a first accommodating hole for passing a guide wire or a catheter being arranged on the core mold, and a plurality of electromagnetic crimping pieces arranged along the circumference of the first accommodating hole, and a permanent magnet being arranged on the body and matched with the electromagnetic crimping pieces; after the electromagnetic crimping pieces are electrified, the permanent magnet and the electromagnetic crimping pieces repel each other, so as to drive the electromagnetic crimping pieces to move towards the direction of being close to the central axis of the first accommodating hole. The developing ring crimping device provided by the application is controllable in crimping force compared with the use of a crimping clamp, can make the developing ring be tightly crimped without damaging the pipe body, and can uniformly crimp the whole circumference of the developing ring along with the rotation of the core mold, so that non-circular deformation caused by non-uniform circumferential force is avoided, and the performance of the guide wire / catheter is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically to a radiopaque ring crimping device. Background Technology

[0002] Guidewires / catheters are widely used in implantation or interventional procedures. To determine their exact location within the body, radiopaque precious metal alloys (platinum, gold, tantalum, etc.) are typically used to fix them in the desired position, allowing doctors to observe their location under X-rays. However, due to contact with the human body, adhesive bonding is generally not used as a routine method. Cold processing to fix radiopaque materials to guidewires / catheters is widely used, but with current technology, for example, when using crimping pliers, the crimping force is difficult to control, easily causing irregular deformation and uneven deformation of the radiopaque ring, severely affecting the performance of the guidewire / catheter. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is that when using crimping pliers, the crimping force is difficult to control, which easily produces irregular shape deformation, resulting in uneven circumferential deformation of the imaging ring, which seriously affects the performance of the guidewire / conduit. Thus, an imaging ring crimping device is provided.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0005] This invention provides a developing ring crimping device, comprising: a body; a mandrel rotatably disposed on the body, the mandrel having a first clearance hole for a guide wire or conduit to pass through, and a plurality of electromagnet crimping members arranged circumferentially along the first clearance hole, each of the electromagnet crimping members being movable radially along the first clearance hole; a permanent magnet adapted to the electromagnet crimping members and disposed on the body, wherein when the electromagnet crimping members are energized, the permanent magnet and the electromagnet crimping members repel each other to drive the electromagnet crimping members to move toward a direction close to the central axis of the first clearance hole; wherein the rotation axis of the mandrel coincides with the central axis of the first clearance hole.

[0006] Furthermore, the core mold includes an upper cover plate and a lower base plate that are interlocked with each other, and a plurality of receiving grooves are formed between the upper cover plate and the lower base plate, each of the receiving grooves being arranged along the radial direction of the first clearance hole; the electromagnet pressing member is slidably disposed in the receiving groove.

[0007] Furthermore, the electromagnet crimping component includes a steel core, a spiral coil, and a crimping connector; a plurality of wiring grooves are formed between the upper cover plate and the lower base plate; one end of the spiral coil is wound around the outer surface of the steel core, and the other end is embedded in the wiring groove and extends to the outside of the core mold; the crimping connector is disposed at the end of the steel core facing the first clearance hole, and the end of the crimping connector away from the steel core is a curved surface.

[0008] Furthermore, the developing ring pressing device also includes a first base, a core mold chuck, and a driving component; the first base is disposed on the main body; the core mold chuck is rotatably disposed on the first base, the core mold chuck is provided with a clamping station, and the core mold is fixed at the clamping station; the driving component is disposed on the main body, the driving component is connected to the core mold chuck, and is used to drive the core mold chuck to rotate.

[0009] Furthermore, the first base is provided with a bearing mounting hole, and a bearing is provided in the bearing mounting hole; a shaft is provided at the end of the core mold chuck away from the core mold, the shaft is rotatably disposed in the bearing mounting hole via a bearing, and the shaft extends at least partially from the bearing; the driving component includes a motor and a belt; the motor is disposed on the main body, and the output shaft of the motor is connected to the shaft via the belt.

[0010] Furthermore, the developing ring pressing device also includes a second base, which is movable on the main body in a direction close to or away from the first base; the core mold chuck includes a first chuck and a second chuck; the first chuck is disposed on the first base, and the second chuck is disposed on the second base; both the first chuck and the second chuck are provided with limiting meshing teeth, and the limiting meshing teeth on the first chuck and the limiting meshing teeth on the second chuck are misaligned so that the first chuck and the second chuck are connected by meshing through the limiting meshing teeth; the inner ring area surrounded by the plurality of limiting meshing teeth forms the clamping station.

[0011] Furthermore, the first clamp is provided with a second clearance hole for the guide wire or catheter to pass through, and the second clamp is provided with a third clearance hole for the guide wire or catheter to pass through; the first clearance hole, the second clearance hole and the third clearance hole are coaxially arranged.

[0012] Furthermore, the developing ring pressing device also includes a guide rail disposed on the main body; the bottom of the second seat is provided with a sliding groove, and the second seat is slidably disposed on the main body via the sliding groove and the guide rail.

[0013] Furthermore, the core mold clamp is made of shock-resistant electromagnetic shielding material.

[0014] Furthermore, the developing ring pressing device also includes an operation panel disposed on the main body; the operation panel is electrically connected to the electromagnet pressing component, and the operation panel adjusts the pressing force by adjusting the power supply current of the electromagnet pressing component; the operation panel is electrically connected to the motor and is used to adjust the speed of the motor.

[0015] The technical solution of this invention has the following advantages:

[0016] The developing ring crimping device provided by this invention uses the mutual repulsion between a permanent magnet and an electromagnet crimping component as the clamping force for crimping the developing ring. It crimps the developing ring on the guide wire / guide tube. Compared with using crimping pliers, the crimping force is controllable, achieving the goal of crimping the developing ring without damaging the tube body. Moreover, as the mandrel rotates, the developing ring can be crimped evenly throughout its entire circumference, preventing non-circular deformation due to uneven circumferential force and ensuring the performance of the guide wire / guide tube. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the developing ring crimping device (first clamp and second clamp fastened together) in an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the developing ring crimping device (with the first clamp and the second clamp separated) in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the core mold clamp in the developing ring crimping device of the present invention;

[0021] Figure 4 This is a schematic diagram of the first clamp and the core mold in the developing ring crimping device of the present invention;

[0022] Figure 5 This is an enlarged schematic diagram of a portion of the core mold in the developing ring pressing device of this invention.

[0023] Figure 6 This is an exploded view of the core mold in the developing ring crimping device according to an embodiment of the present invention;

[0024] Figure 7 This is a side view of the developing ring crimping device in an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Body; 2. First base; 3. Second base; 4. First chuck; 5. Second chuck; 6. Shaft; 7. Belt; 8. Motor; 9. Operation panel; 10. Guide rail; 11. Guide tube; 12. Core mold; 13. Electromagnet crimping piece; 14. Permanent magnet; 15. Limiting meshing teeth; 16. Crimping joint; 17. Wiring groove; 18. Top cover plate; 19. Bottom plate; 20. First clearance hole; 21. Steel core; 22. Helical coil; 23. Receiving groove. Detailed Implementation

[0027] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] like Figures 1 to 7As shown, this embodiment provides a developing ring crimping device, including: a body 1, which may be a metal or resin plate for placing various components; a core mold 12 rotatably mounted on the body 1, the core mold 12 having a first clearance hole 20 for the guide wire or conduit 11 to pass through, and a plurality of electromagnet crimping members 13 arranged circumferentially along the first clearance hole 20, for example, four electromagnet crimping members 13 may be equally spaced along the circumferential direction of the first clearance hole 20, each electromagnet crimping member 13 being movable in the radial direction of the first clearance hole 20; and a permanent magnet 14 adapted to the electromagnet crimping members 13 and mounted on the body 1. When the electromagnet crimping members 13 are energized, the permanent magnet 14 and the electromagnet crimping members 13 repel each other, thereby driving the electromagnet crimping members 13 to move toward the direction close to the central axis of the first clearance hole 20; wherein, the rotation axis of the core mold 12 coincides with the central axis of the first clearance hole 20. In use, the guide wire or conduit 11 of the developing ring to be crimped can be inserted into the first relief hole 20. After the electromagnet crimping member 13 is energized, it can move along the direction close to the central axis of the first relief hole 20 until the developing ring is pressed tightly. The current applied to the electromagnet crimping member 13 can be adjusted as needed to adjust the crimping force so that it can just deform the developing ring and tighten the guide wire or conduit 11 without damaging the structure of the guide wire or conduit 11.

[0032] The developing ring crimping device provided in this embodiment uses the mutual repulsion between the permanent magnet 14 and the electromagnet crimping member 13 as the clamping force for crimping the developing ring, and crimps the developing ring on the guide wire / guide tube 11. Compared with using crimping pliers, the crimping force is controllable, so that the developing ring can be crimped without damaging the tube body. Moreover, as the mandrel 12 rotates, the developing ring can be crimped evenly in the entire circumference, and non-circular deformation will not occur due to uneven circumferential force, thus ensuring the performance of the guide wire / guide tube 11.

[0033] like Figure 6 As shown, the core mold 12 includes an upper cover plate 18 and a lower base plate 19 that are interlocked with each other. Four receiving grooves 23 can be formed between the upper cover plate 18 and the lower base plate 19. The four receiving grooves 23 can be evenly distributed along the circumferential direction of the first relief hole 20. Each receiving groove 23 is arranged along the radial direction of the first relief hole 20. Each receiving groove 23 is provided with an electromagnet pressing member 13. When a mutual repulsion force is generated between the electromagnet pressing member 13 and the permanent magnet 14, the electromagnet pressing member 13 can slide in the receiving groove 23.

[0034] like Figure 5As shown, the electromagnet crimping component 13 includes a steel core 21, a spiral coil 22, and a crimping connector 16. For example, the steel core 21 can be dumbbell-shaped to facilitate winding the spiral coil 22. Simultaneously, the dumbbell-shaped end can abut against the wall of the receiving groove 23 to prevent the steel core 21 from falling out of the receiving groove 23. Several wiring grooves 17 are formed between the upper cover plate 18 and the lower base plate 19. One end of the spiral coil 22 is wound around the outer surface of the steel core 21, and the other end is embedded in the wiring groove 17 and extends to the outside of the core mold 12, thus facilitating connection to an external power source. For example, the spiral coil 22 can be connected to the power source through a slip ring connector, thus eliminating interference from rotation of the spiral coil 22. For example, the spiral coil 22 can be a four-core cable, with each pair of cores corresponding to one steel core 21, allowing each spiral coil 22 to connect to two steel cores 21 simultaneously. The crimp connector 16 is located at the end of the steel core 21 facing the first relief hole 20, and the end of the crimp connector 16 away from the steel core 21 is curved. This arrangement can prevent stress concentration and avoid irregular deformation.

[0035] The developing ring pressing device also includes a first base 2, a core mold chuck, and a driving component. For example, the first base 2 can be made of metal and can be fixed to the main body 1 by screws. The core mold chuck is rotatably mounted on the first base 2 and has a clamping station. The core mold 12 is fixed at the clamping station. The driving component is mounted on the main body 1 and is connected to the core mold chuck to drive the core mold chuck to rotate.

[0036] like Figure 7 As shown, for example, the first base 2 is provided with a bearing mounting hole, and a bearing is provided in the bearing mounting hole; a shaft 6 is provided at the end of the core mold chuck away from the core mold 12, and the shaft 6 is rotatably mounted in the bearing mounting hole via the bearing, and the shaft 6 extends at least partially from the bearing; wherein, the outer ring of the bearing and the bearing mounting hole are interference-fitted, and the inner ring of the bearing and the shaft 6 are hard-fitted. The driving component includes a motor 8 and a belt 7; the motor 8 is mounted on the body 1, and the output shaft of the motor 8 is connected to the shaft 6 via the belt 7. For example, a groove can be provided on the shaft section of the shaft 6 that extends out of the bearing, and the belt 7 is embedded in the groove. After the motor 8 rotates, the power is transmitted to the shaft 6 through the belt 7, and the rotation of the shaft 6 drives the core mold 12 mounted at the clamping station to rotate.

[0037] The developing ring pressing device also includes a second seat 3. For example, the second seat 3 can be made of metal. The second seat 3 is mounted on the main body 1 and can move in a direction close to or away from the first seat 2. For example, a guide rail 10 can be provided on the main body 1, and a sliding groove can be provided at the bottom of the second seat 3. For example, the sliding groove can be a dovetail groove. The second seat 3 is slidably mounted on the main body 1 through the sliding groove and the guide rail 10.

[0038] like Figure 3 , Figure 4 As shown, the core mold chuck includes a first chuck 4 and a second chuck 5. The first chuck 4 is disposed on the first base 2, and the second chuck 5 is disposed on the second base 3. The connection method between the second chuck 5 and the second base 3 is the same as the connection method between the first chuck 4 and the first base 2, which will not be described again here. Both the first chuck 4 and the second chuck 5 are provided with limiting engagement teeth 15. For example, two limiting engagement teeth 15 can be provided at intervals on the first chuck 4. Similarly, two limiting engagement teeth 15 can also be provided at intervals on the second chuck 5. The limiting engagement teeth 15 on the first chuck 4 and the limiting engagement teeth 15 on the second chuck 5 are misaligned. When the first chuck 4 and the second chuck 5 are engaged with each other, the first chuck 4 and the second chuck 5 are connected by the engagement of the limiting engagement teeth 15. When the first chuck 4 rotates, it can also drive the second chuck 5 to rotate synchronously.

[0039] The inner ring area enclosed by the four limiting meshing teeth 15 forms a clamping station. For example, the side of each limiting meshing tooth 15 facing the core mold 12 can be a plane, and a cuboid groove can be provided on the plane to bond the permanent magnet 14 into the cuboid groove. For example, the permanent magnet 14 can be an ordinary magnet. The upper cover plate 18 and the lower base plate 19 of the core mold 12 are also correspondingly set as rectangular plates. When the core mold 12 is in the clamping station, the core mold 12 can be wrapped by the outer limiting meshing teeth 15, and the four side walls of the core mold 12 can respectively fit with the outer limiting meshing teeth 15. At the same time, each permanent magnet 14 is aligned with the electromagnet pressing part 13 located inside the core mold 12. For example, mounting holes can be provided on the upper cover plate 18, the lower base plate 19 and the first chuck 4 of the core mold 12, and the core mold 12 can be fixed in the clamping station by screws.

[0040] The first clamp 4 has a second clearance hole for the guide wire or conduit 11 to pass through, and the second clamp 5 has a third clearance hole for the guide wire or conduit 11 to pass through. The first clearance hole 20, the second clearance hole, and the third clearance hole are coaxially arranged. In use, the guide wire or conduit 11 can pass through the second clearance hole, the first clearance hole 20, and the third clearance hole in sequence, aligning the position of the developing ring with the position of the mandrel 12, and then the pressing can begin. With this configuration, the two ends of the mandrel 12 can open and close, and the first seat 2 and the second seat 3 are connected by guide rail 10 and bolts to ensure their concentricity. This makes the system operation more reliable, and the dual-axis fixed constraint method can reduce and absorb the vibration and inter-axis deviation caused by rotation.

[0041] The core mold chuck is made of shock-resistant electromagnetic shielding material. For example, the core mold chuck can be made of magnesium alloy AZ91D. This design allows the core mold chuck to absorb vibration while also providing ideal electromagnetic shielding. Vibration absorption improves the device's accuracy, making it more stable during operation and enabling more precise operation. The electromagnetic shielding effect reduces the impact of external electromagnetic fields on the core mold 12, allowing it to execute commands without interference.

[0042] The developing ring pressing device also includes an operation panel 9, which can be a touch screen and is mounted on the main body 1. The operation panel 9 is electrically connected to the electromagnet pressing component 13, and adjusts the pressing force by adjusting the power supply current of the electromagnet pressing component 13. The operation panel 9 is also electrically connected to the motor 8 to adjust the speed of the motor 8.

[0043] Where F=(μ0*4π)*[(m1*m2) / r 2 ].

[0044] F represents the repulsive force between the magnets; μ0 is the permeability of vacuum (a constant); m1 and m2 are the magnetic moments between the two magnets, respectively; and r represents the distance between the two magnets. When the magnet is an electromagnet, the formula for calculating m is m = i * s * e, where i is the current, S is the area of ​​the coil, and e is a unit vector that follows a right-hand rule with respect to the direction of the current. According to the above formula, if other parameters remain constant, simply increasing the current will increase the magnitude of the clamping force.

[0045] In this application, the developing ring crimping device can insert a core needle inside the conduit for auxiliary support when crimping the developing ring onto the conduit, and can directly crimp the developing ring onto the guide wire.

[0046] In summary, the contrast ring crimping device of this application uses the mutual repulsion between the permanent magnet 14 and the electromagnet crimping component 13 as the clamping force to crimp the contrast ring on the medical catheter 11 / guidewire. The motor 8 drives the mandrel 12 to rotate, uniformly crimping the contrast ring circumferentially. The contrast ring undergoes plastic deformation, tightly clamping the guidewire or catheter 11. The contrast ring exhibits high deformation uniformity and will not undergo non-circular deformation due to uneven circumferential force. The clamping force is adjusted by controlling the current, offering a wide adjustment range to achieve crimping of the contrast ring without damaging the catheter body. Furthermore, the device can be programmed to handle various application scenarios, including linear force, non-linear force, periodic pressure application, and speed adjustment.

[0047] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A developing ring crimping device, characterized in that, include: Ontology(1); The core mold (12) is rotatably disposed on the body (1). The core mold (12) is provided with a first clearance hole (20) for the guide wire or conduit (11) to pass through, and a plurality of electromagnet crimping parts (13) arranged circumferentially along the first clearance hole (20). Each of the electromagnet crimping parts (13) can move radially along the first clearance hole (20). A permanent magnet (14) is adapted to the electromagnet crimping member (13) and is disposed on the body (1). When the electromagnet crimping member (13) is energized, the permanent magnet (14) and the electromagnet crimping member (13) repel each other, thereby driving the electromagnet crimping member (13) to move toward the central axis of the first clearance hole (20). The rotation axis of the core mold (12) coincides with the central axis of the first clearance hole (20); The core mold (12) includes an upper cover plate (18) and a lower base plate (19) that are interlocked with each other. A plurality of receiving grooves (23) are formed between the upper cover plate (18) and the lower base plate (19). Each receiving groove (23) is arranged along the radial direction of the first clearance hole (20). The electromagnet crimping member (13) is slidably disposed in the receiving groove (23); The electromagnet crimping component (13) includes a steel core (21), a spiral coil (22), and a crimping connector (16). A plurality of wiring grooves (17) are formed between the upper cover plate (18) and the lower base plate (19). One end of the spiral coil (22) is wound around the outer surface of the steel core (21), and the other end is embedded in the wiring groove (17) and extends to the outside of the core mold (12). The crimp connector (16) is located at one end of the steel core (21) facing the first relief hole (20), and the end of the crimp connector (16) away from the steel core (21) is curved.

2. The developing ring crimping device according to claim 1, characterized in that, It also includes the first base (2), the core mold clamp, and the driving component; The first seat (2) is disposed on the main body (1); The core mold chuck is rotatably mounted on the first base (2), and a clamping station is provided on the core mold chuck. The core mold (12) is fixed on the clamping station. The driving component is disposed on the body (1) and is connected to the core mold chuck to drive the core mold chuck to rotate.

3. The developing ring crimping device according to claim 2, characterized in that, The first base (2) is provided with a bearing mounting hole, and a bearing is provided in the bearing mounting hole; The core mold chuck is provided with a shaft (6) at one end away from the core mold (12). The shaft (6) is rotatably disposed in the bearing mounting hole via a bearing, and the shaft (6) extends at least partially from the bearing. The driving component includes a motor (8) and a belt (7); the motor (8) is mounted on the body (1), and the output shaft of the motor (8) is connected to the shaft (6) via the belt (7).

4. The developing ring crimping device according to claim 2, characterized in that, It also includes a second seat (3), which is movable on the main body (1) in a direction that is close to or far away from the first seat (2); The core mold chuck includes a first chuck (4) and a second chuck (5); The first chuck (4) is disposed on the first base (2), and the second chuck (5) is disposed on the second base (3); Both the first chuck (4) and the second chuck (5) are provided with limiting engagement teeth (15), and the limiting engagement teeth (15) on the first chuck (4) and the limiting engagement teeth (15) on the second chuck (5) are misaligned so that the first chuck (4) and the second chuck (5) are connected by engagement through the limiting engagement teeth (15); The inner ring area enclosed by the plurality of limiting meshing teeth (15) forms the clamping station.

5. The developing ring crimping device according to claim 4, characterized in that, The first clamp (4) is provided with a second clearance hole for the guide wire or catheter (11) to pass through, and the second clamp (5) is provided with a third clearance hole for the guide wire or catheter (11) to pass through; The first clearance hole (20), the second clearance hole, and the third clearance hole are coaxially arranged.

6. The developing ring crimping device according to claim 4, characterized in that, It also includes a guide rail (10) disposed on the body (1); The bottom of the second seat (3) is provided with a sliding groove, and the second seat (3) is slidably mounted on the main body (1) via the sliding groove and the guide rail (10).

7. The developing ring crimping device according to claim 2, characterized in that, The core mold clamp is made of shock-resistant electromagnetic shielding material.

8. The developing ring crimping device according to claim 3, characterized in that, It also includes an operation panel (9) which is disposed on the main body (1); The operation panel (9) is electrically connected to the electromagnet crimping member (13), and the operation panel (9) adjusts the crimping force by adjusting the power supply current of the electromagnet crimping member (13). The operation panel (9) is electrically connected to the motor (8) and is used to adjust the speed of the motor (8).

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