Medical device assembly equipment

Abstract

The present invention relates to a medical device assembly device, comprising a transfer mechanism, a straightening mechanism and a transfer mechanism. The transfer mechanism is used to transfer accessories to an alignment position. The straightening mechanism comprises a carrier for carrying a catheter and a straightening assembly mounted on the carrier. The straightening assembly is used to connect the catheter and has a guide axis for straightening the catheter. When the straightening assembly is connected to the catheter, the carrier can drive the guide axis and at least part of the catheter to point to an alignment position synchronously. The transfer mechanism is used to transfer the accessories from the alignment position to the catheter. The present invention uses the straightening assembly to straighten the catheter. Regardless of whether the catheter and the accessory have a clearance fit through the channel, a transition fit, or even an interference fit, the straightening assembly can maintain the catheter in a straight shape by straightening the catheter. The accessories can be transferred to the catheter along the guide axis. The straightening constraint of the straightening assembly on the catheter can prevent the catheter from bending or wrinkling under the action of external force.

Description

Technical Field

[0001] The present invention relates to the technical field of medical device production, and in particular to medical device assembly equipment. Background Art

[0002] A stopper clamp is a device used to close the flow path within a catheter. To achieve this function, the clamp features a through-channel for the catheter to pass through. Due to the unique characteristics of medical devices, catheters are typically made of plastic, and the outer wall of the catheter easily adheres to the inner wall of the stopper clamp's through-channel. This prevents the clamp from being easily and smoothly applied to the catheter. Increasing the external force on the clamp or catheter can cause the catheter to bend or wrinkle, disrupting assembly.

[0003] In response to the above technical problems, the existing solution is to set the inner wall of the through-channel and the catheter to be clearance-fitted, and to reduce the viscous resistance between the catheter and the inner wall of the through-channel by setting a larger gap between the two.

[0004] The problems with the above countermeasures are: the liquid stop clamp can easily slide on the catheter, making it difficult to keep the liquid stop clamp in a certain position on the catheter; and, due to differences in manufacturing processes, catheters or liquid stop clamps provided by different batches or by different manufacturers may not necessarily be in a clearance fit state. In some cases, the catheter and the liquid stop clamp form a transition fit or even an interference fit, which brings difficulties to the installation of the liquid stop clamp. Summary of the Invention

[0005] In view of this, the present invention provides a medical device assembly device, comprising a transfer mechanism, a straightening mechanism, and a transfer mechanism. The transfer mechanism is used to transfer accessories to an alignment position. The straightening mechanism includes a carrier for carrying a catheter and a straightening assembly mounted on the carrier. The straightening assembly is used to connect the catheter and has a guide axis for straightening the catheter.

[0006] When the straightening assembly is connected to the conduit, the carrier can drive the guide axis and at least part of the conduit to point to the alignment position synchronously; the transfer mechanism is used to transfer the accessory from the alignment position to the conduit.

[0007] The medical device assembly equipment provided by the present invention uses a straightening component to straighten the catheter. Regardless of whether the catheter and the accessories have a clearance fit through the channel, a transition fit, or even an interference fit, the straightening component can maintain the catheter in a straight shape by straightening the catheter. The accessories can be transferred to the catheter along the guide axis. The straightening and restraining effect of the straightening component on the catheter can prevent the catheter from bending or wrinkling under the action of external force.

[0008] In one embodiment, the straightening assembly includes a push rod fixedly connected to the carrier, and the guide axis is the axis of the push rod; the push rod is used to extend from one end of the catheter and can drive the push rod away from one end of the carrier and at least part of the catheter to the alignment position under the control of the carrier.

[0009] With such arrangement, the push rod extends into the conduit to achieve a better effect of straightening and restraining the conduit, and the structure is simple.

[0010] In one embodiment, when the transfer mechanism transfers the accessory to the alignment position, the carrier can drive the guide axis and the axis of the straight portion of the catheter to synchronously pass through the through channel of the accessory.

[0011] With this arrangement, the accessory can be more smoothly installed on the catheter, which is beneficial to reducing the resistance of the accessory during the transfer process from the transfer mechanism to the end of the catheter, and reducing the probability of the accessory falling off during the transfer to the catheter.

[0012] In one embodiment, the transfer mechanism includes an integrally connected swinging part and a picking needle. The swinging part is rotatably mounted on a frame of the medical device assembly equipment. The picking needle is arranged perpendicular to the rotation center of the swinging part. The picking needle is used to extend into the through channel of the accessory.

[0013] With this arrangement, the transfer process of the accessories is completed by the swing part driving the material picking needle and the accessories to rotate synchronously. The transfer steps are simpler, which is conducive to shortening the assembly cycle of the accessories and the catheter, and the space required for setting up the transfer mechanism and making the transfer mechanism move is smaller.

[0014] In one embodiment, the swinging portion can rotate relative to the frame to drive the picking needle and the accessory to move synchronously to the alignment position; when the picking needle is in the alignment position, the carrier can drive the guide axis of the straightening component to point to the tip of the picking needle.

[0015] With such a configuration, the swinging part can drive the material picking needle to align with the internal channel of the catheter at the alignment position, thereby aligning the through channel of the accessory with the catheter. This can significantly shorten the time required for assembly. After the accessory reaches the alignment position, the catheter can be installed. The loading step and the transfer step are closely connected in time, and there is no need to add other intermediate steps to align the through channel with the catheter.

[0016] In one embodiment, the transfer mechanism includes a detection module configured to detect that the conduit passes through an opening in the accessory through-channel facing away from the carrier.

[0017] With such a configuration, by using the detection module to detect whether the catheter passes through the through-channel opening, it is possible to determine whether the catheter has any bends or wrinkles in the through-channel. Passing through the through-channel opening means that the catheter maintains a straight tube shape in the through-channel without any defects such as bends or wrinkles, which means that the accessory is installed smoothly and can drive the accessory to continue moving along the guide axis until the accessory reaches the preset installation position.

[0018] In one embodiment, the detection module is a through-beam optical fiber sensor.

[0019] With such an arrangement, the detection of the optical fiber sensor is sensitive and the detection result is highly reliable.

[0020] In one embodiment, the guide axis of the straightening assembly extends in a vertical direction.

[0021] With such an arrangement, all the gravity exerted on the accessory can be used to drive the accessory to sleeve the conduit along the guide axis, thereby improving the assembly efficiency of the conduit and the accessory.

[0022] In one embodiment, the medical device assembly equipment further includes a catheter control mechanism, which includes a first tube clamping assembly and a second tube clamping assembly arranged in a direction parallel to the guide axis, and a straightening assembly movably arranged in a direction parallel to the guide axis, the straightening assembly having a holding portion for holding the catheter; in a direction parallel to the guide axis, the distance between the straightening assembly and the first tube clamping assembly and / or the second tube clamping assembly is adjustable.

[0023] With such an arrangement, one of the first tube clamping assembly and the second tube clamping assembly can first clamp the catheter, and the straightening assembly moves in a direction parallel to the guide axis and straightens the catheter through the holding portion until the straightening assembly has completed straightening the catheter, and then the other of the first tube clamping assembly and the second tube clamping assembly clamps the catheter; the straightening of the catheter by the straightening assembly can further improve the straightening effect of the catheter and avoid local deviation of the catheter relative to the guide axis. The first tube clamping assembly and the second tube clamping assembly can impose constraints on the catheter after the straightening assembly has completed straightening the catheter, so that the catheter can maintain a straight tube shape for a longer period of time.

[0024] In one embodiment, the transfer mechanism includes a transfer assembly for contacting the accessory, and the transfer assembly is provided with a prying protrusion that cooperates with the accessory. The prying protrusion can press against the claw of the accessory when the transfer assembly applies force to the accessory to increase the minimum passing diameter of the accessory.

[0025] With this arrangement, by prying the protrusion to increase the minimum passing diameter of the accessory, the accessory and the conduit can be switched from the default interference fit state to a transition fit or clearance fit state, which is beneficial to reducing the resistance during assembly and further improving the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of a medical device assembly device according to an embodiment of the present invention;

[0027] Figure 2 is a partial structural diagram of a catheter control mechanism in one embodiment of the present invention;

[0028] Figure 3 A schematic diagram of a portion of the structure of a medical device assembly device in one embodiment of the present invention;

[0029] Figure 4 for Figure 3 A partial enlarged schematic diagram of the medical device assembly equipment shown at point A;

[0030] Figure 5 is a partial structural schematic diagram of a medical device assembly device in another embodiment of the present invention;

[0031] Figure 6 for Figure 5 A partial enlarged schematic diagram of the medical device assembly equipment at point B is shown.

[0032] Description of reference numerals:

[0033] 100. Medical device assembly equipment; 10. Transfer mechanism; 20. Straightening mechanism; 40. Rack; 110. Catheter; 120. Liquid stop clamp;

[0034] 11. Swinging part; 12. Pick-up needle; 21. Carrier; 22. Push rod; 31. Optical fiber sensor; 32. Transfer assembly; 50. Catheter control mechanism; 51. First tube clamping assembly; 52. Second tube clamping assembly; 53. Straightening assembly; 60. Feed channel. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] The present invention provides a medical device assembly apparatus 100 for attaching medical accessories to a medical catheter. The apparatus comprises a frame 40, a feed channel 60, a transfer mechanism 10, and a transfer mechanism. Based on the present invention's medical device assembly apparatus 100, the assembly of a catheter 110 and a liquid stop clamp 120 includes a transfer step and a transfer step.

[0038] The medical device assembly apparatus 100 of the present invention is suitable for attaching medical accessories to flexible, flexible infusion catheters. These accessories can include stoppers, flow control components for controlling fluid flow within the catheter, stop clamps, or other types of accessories, all of which provide a through-channel for the catheter to pass through. For ease of description, the following examples illustrate the structure and operating principles of the medical device assembly apparatus 100 using the example of attaching a stop clamp to a medical catheter.

[0039] Among them, the frame 40 serves as the basic component for supporting the feeding channel 60, the transfer mechanism 10 and the transfer mechanism; the feeding channel 60 is used to transport the liquid stop clamp 120 to the transfer mechanism 10; the transfer mechanism 10 is used to perform the transfer step, moving the liquid stop clamp 120 out of the feeding channel 60 and transferring it to the alignment position; the transfer mechanism is used to perform the transfer step, transferring the liquid stop clamp 120 in the alignment position to the conduit 110.

[0040] The aforementioned alignment position refers to the position of the liquid-stopping clamp 120 relative to the medical device assembly apparatus 100 when the transfer mechanism 10 terminates its movement during the transfer step of transferring the liquid-stopping clamp 120. The liquid-stopping clamp 120 remains connected to the transfer mechanism 10 throughout the transfer process. After the transfer step is completed, the liquid-stopping clamp 120 remains connected to the transfer mechanism 10 while in the alignment position awaiting the transfer step by the transfer mechanism. After the catheter 110 is inserted through the through-channel of the liquid-stopping clamp 120, the transfer mechanism 10 and the liquid-stopping clamp 120 are separated.

[0041] The transfer step of the transfer mechanism is a process in which the transfer mechanism drives the liquid-stopping clamp 120 to pass through the through channel and sleeve the outer periphery of the catheter 110 , and then continues to drive the liquid-stopping clamp 120 to slide toward the preset installation position on the catheter 110 .

[0042] Existing catheters and stop clamps are typically made of plastic, which can cause the outer wall of the catheter to easily stick to the inner wall of the stop clamp's through-hole, making it difficult to install the stop clamp over the catheter. In this case, simply increasing the external force on the stop clamp or catheter can easily cause the catheter to bend or wrinkle, which can further damage the catheter and make installation of the stop clamp even more difficult.

[0043] The current solution to this problem is to create a clearance fit between the inner wall of the through-channel and the catheter. This gap is increased to reduce the viscous resistance between the two walls. However, this solution presents several issues: the stop clamp easily slips on the catheter, making it difficult to maintain a fixed position. Furthermore, due to variations in manufacturing processes, production batches, and manufacturers, it's difficult to ensure a consistent clearance fit between the stop clamp and the catheter. Occasionally, the stop clamp and the catheter may form a transition fit or even an interference fit, which can easily interrupt the assembly of the stop clamp.

[0044] In view of this, the medical device assembly apparatus 100 provided by the present invention further includes a straightening mechanism 20, which is used to constrain the shape of the catheter 110 so that the catheter 110 remains straight. The catheter 110 remains straight, which means that the catheter 110 is cylindrical in this state.

[0045] See also Figures 1 to 6 The straightening mechanism 20 includes a carrier 21 for supporting the catheter 110 and a straightening assembly mounted on the carrier 21. The straightening assembly is capable of connecting to the catheter 110 and has a guide axis for straightening the catheter 110. Once connected to the catheter 110, the straightening assembly applies a restraining force to the catheter 110, maintaining the straight cylindrical shape of the catheter 110 and preventing the catheter 110 from bending or deforming.

[0046] When the straightening assembly is connected to the catheter 110, the carrier 21 can drive the guide axis and the axis of the straightened portion of the catheter 110 to point toward the alignment position. At this point, the axis of the straightened portion of the catheter 110 and the axis of the passage through the liquid-stop clamp 120 at least intersect, and the intersection of the two is located precisely at the geometric center of the end of the catheter 110 near the alignment position. This facilitates the installation of the liquid-stop clamp 120 along the guide axis / the axis of the catheter 110 from the end near the alignment position.

[0047] Since the catheter 110 is continuously restrained by the straightening assembly, even if the transfer mechanism applies force to the liquid-stop clamp 120 in the subsequent transfer step, the catheter 110 remains straight, thereby preventing the catheter 110 from bending or wrinkling due to the resistance of the liquid-stop clamp 120.

[0048] Therefore, based on the medical device assembly apparatus 100 provided by the present invention, the assembly of the catheter 110 and the liquid stop clamp 120 further includes a straightening step, and the transfer step is performed after the straightening step is completed.

[0049] In one embodiment, the straightening assembly includes a tappet 22 with one end fixedly connected to the carrier 21. The aforementioned guide axis is the axis of the tappet 22. After the end of the tappet 22, distal from the carrier 21, extends through one end of the guide tube 110, the axis of the guide tube 110 and the guide axis nearly coincide with each other. By driving the tappet 22 toward the alignment position relative to the end distal from the carrier 21, the carrier 21 indirectly drives the other end of the guide tube 110 toward the alignment position.

[0050] Preferably, when the push rod 22 points to the aligned position, the axis of the push rod 22 and the axis of the through-channel, as well as the axis of the straight portion of the conduit 110 and the axis of the through-channel all intersect at the same point.

[0051] There may be a clearance fit or a transition fit between the push rod 22 extending into the conduit 110 and the inner wall of the conduit 110 .

[0052] The push rod 22 extending into the catheter 110 can more effectively exert a restraining force on the catheter 110, thereby improving the straightness of the catheter 110. The liquid-stop clamp 120 can be more smoothly installed on the catheter 110, which is beneficial to reducing the resistance when the liquid-stop clamp 120 is transferred from the transfer mechanism 10 to the end of the catheter 110 close to the alignment position.

[0053] Furthermore, when the straightening assembly uses a push rod 22, the end of the push rod 22 away from the carrier 21 is preferably set to the end of the catheter 110 that is not extended and is close to the positioning position. This means that there is still an empty section between the end of the catheter 110 close to the positioning position and the end of the push rod 22 that is relatively away from the carrier 21. In accordance with the above, the transfer mechanism 10 includes an integrally connected swinging part 11 and a material picking needle 12. The swinging part 11 is rotatably mounted on the frame 40, and the material picking needle 12 is arranged perpendicular to the rotation center of the swinging part 11. After the material picking needle 12 passes through the liquid stop clamp 120 and rotates with the swinging part 11 to a preset angle stroke, the tip of the material picking needle 120 that extends out of the liquid stop clamp 120 can be inserted into the empty section in the above-mentioned catheter 110.

[0054] With this arrangement, the transfer process is completed by the swinging portion 11 driving the feed needle 12 and the liquid-stopping clamp 120 to rotate synchronously to the aligned position. This simplifies the transfer process, shortens the assembly cycle of the liquid-stopping clamp 120 and the catheter 110, and reduces the space required for the transfer mechanism 10 and the movement of the transfer mechanism 10. The feed needle 12 is inserted into the catheter 110, further improving the reliability of the transfer of the liquid-stopping clamp 120 from the feed needle 12 to the catheter 110, and the liquid-stopping clamp 120 will not fall off the feed needle 12 or the end of the catheter 110.

[0055] It should be noted that the method of inserting the material extraction needle 12 into the liquid-stopping clamp 120 through the passage to obtain the liquid-stopping clamp 120 is only one preferred embodiment of the present invention, and the material extraction needle 12 is not a necessary structure for solving the technical problem of the present invention. In actual application, the liquid-stopping clamp 120 can also be transferred by other means.

[0056] For example, a set of relatively movable finger clamps can be provided, which can conform to and securely mate with the liquid-stop clamp 120. Alternatively, the finger clamps can be mounted on a multi-directional transfer arm, rather than on the swing portion 11. Under the control of a motion control program, the multi-directional transfer arm drives the finger clamps to transfer the liquid-stop clamp 120 from the feed channel 60 to the alignment position, thereby also achieving the purpose of transferring the liquid-stop clamp 120.

[0057] Furthermore, when the material collection needle 12 and the liquid stop clamp 120 reach the alignment position synchronously, the carrier 21 can drive the guide axis of the straightening component to reach a preset position. At this preset position, the guide axis and the axis of the straightened part of the catheter 110 can extend together into the through channel of the liquid stop clamp 120. Preferably, at this preset position, the guide axis is coaxial with the through channel of the liquid stop clamp 120.

[0058] This arrangement can further shorten the time required for assembly. After the liquid stop clamp 120 reaches the alignment position, the catheter 110 can be placed on it. The loading step and the transfer step are connected, and no other steps are required to align the through channel with the catheter 110.

[0059] In one embodiment, the transfer mechanism includes a transfer component 32 that directly contacts the liquid-stop clamp 120 and applies force to the liquid-stop clamp 120. The transfer component 32 is provided with a prying protrusion that cooperates with the liquid-stop clamp 120. The prying protrusion can support the claw of the liquid-stop clamp 120 when the transfer component 32 applies force to the liquid-stop clamp 120, so as to increase the minimum passing diameter of the liquid-stop clamp 120.

[0060] The minimum diameter of the liquid-stop clamp 120 is the smallest diameter within the through-channel. This dimension determines the type of fit between the through-channel and the catheter 110. Increasing the minimum diameter of the through-channel can reduce the viscous and frictional forces between the through-channel and the outer periphery of the catheter 110. In particular, for the liquid-stop clamp 120 that naturally forms an interference fit with the catheter 110, increasing the minimum diameter of the through-channel can shift the fit between the catheter 110 and the liquid-stop clamp 120 from an interference fit to a transition fit or clearance fit, significantly reducing the resistance and difficulty of installation.

[0061] Please refer again Figures 3 and 4As a preferred embodiment, the transfer assembly 32 includes two clamping jaws that can move toward and away from each other, and at least one of the two jaws is provided with a groove that matches the shape of the liquid-stop clamp 120. The two clamping jaws can approach each other and hold the liquid-stop clamp 120 between them. After holding the liquid-stop clamp 120, the two clamping jaws are relatively fixed and drive the liquid-stop clamp 120 to move together in a direction parallel to the guide axis relative to the straightening mechanism 20 and the guide tube 110.

[0062] In this arrangement, the two jaws exert a force on the liquid stop clamp 120 in the same direction as the extension direction of the guide axis by moving relative to the straightening assembly. All of this force is used to change the axial position of the liquid stop clamp 120 on the catheter 110 until the liquid stop clamp 120 reaches the preset installation position on the catheter 110.

[0063] It should be noted that the present invention does not impose any particular restrictions on the timing of the liquid-stop clamp 120 reaching the alignment position and the timing of the straightening assembly's guide axis reaching the preset position. The liquid-stop clamp 120 may reach the alignment position before or after the guide axis reaches the preset position. In other words, the transfer step may be performed before, after, or simultaneously with the straightening step.

[0064] Furthermore, the transfer assembly 32 is not limited to the clamping jaws described above. In other embodiments, the transfer assembly 32 may also include a push block that moves in a direction parallel to the guide axis and applies a thrust to the liquid-stop clamp 120, or it may drive the liquid-stop clamp 120 to slide to a predetermined installation position on the catheter 110. The specific structure of the transfer assembly 32 depends on how the transfer assembly 32 applies force to the liquid-stop clamp 120. The transfer assembly 32 may apply pressure and static friction to the liquid-stop clamp 120, or it may apply a thrust.

[0065] Furthermore, the transfer mechanism further includes a detection module, which is used to detect that the end of the catheter 110 facing away from the carrier 21 passes through the opening of the through-channel of the liquid-stop clamp 120 facing away from the carrier 21 .

[0066] Specifically, the detection module is disposed on the two clamping jaws of the transfer assembly 32. When the detection module detects that the end of the catheter 110 away from the carrier 21 has passed through the opening of the through-channel facing away from the carrier 21, it means that the catheter 110 has successfully passed through the liquid-stop clamp 120 and the catheter 110 within the through-channel has no bends or wrinkles. In this way, the transfer assembly 32 can continue to drive the liquid-stop clamp 120 to slide along the guide axis / the axis of the catheter 110. Otherwise, the transfer assembly 32 should stop applying force to the liquid-stop clamp 120, and the catheter 110 should be reshaped or replaced with a new catheter 110 to assemble with the liquid-stop clamp 120.

[0067] The detection module is arranged on the transfer assembly 32 and can move synchronously with the transfer assembly 32 in a direction parallel to the guide axis relative to the catheter 110 and the straightening assembly, so that the detection accuracy is higher and the detection results can be obtained quickly.

[0068] As a preferred embodiment, the detection module is a through-beam optical fiber sensor 31 .

[0069] Furthermore, as a preferred embodiment, the guide axis of the straightening assembly extends in the vertical direction. Correspondingly, when the liquid stop clamp 120 reaches the alignment position, the axis running through the channel extends in the vertical direction. It should be noted that this embodiment should not be understood as the straightening assembly and the carrier 21 being fixed relative to the transfer mechanism 10, the transfer mechanism or the frame 40. The carrier 21 can also move relative to the above-mentioned mechanisms or components. Especially in the process of large-scale continuous assembly production, it is necessary to drive multiple straightening assemblies to connect to the conduit 110 in turn through the carrier 21 to complete the assembly one by one. This does not affect the guide axis of the straightening assembly always maintaining a vertical extension.

[0070] Optionally, the medical device assembly equipment 100 also includes a horizontal turntable (not shown), which rotates around a vertical axis. The horizontal turntable is provided with a plurality of straightening mechanisms 20 arranged around its vertical axis, wherein the guide axis of the straightening component of each straightening mechanism 20 is parallel to the vertical axis of the horizontal turntable. The horizontal turntable drives the catheter 110 connected to each straightening mechanism 20 to be assembled with the liquid stop clamp 120 in sequence through rotation.

[0071] With such an arrangement, the gravity acting on the liquid stop clamp 120 can be entirely used to drive the liquid stop clamp 120 to sleeve the catheter 110 along the guide axis, thereby improving the efficiency of assembling the catheter 110 and the liquid stop clamp 120. In addition, in order to adapt to the guide axis extending in the vertical direction, the transfer mechanism is also configured to move in the vertical direction relative to the catheter 110 and the straightening component, thereby simplifying the arrangement of the transfer mechanism.

[0072] Please refer again Figures 1 to 4 In one embodiment, the medical device assembly apparatus 100 further includes a catheter control mechanism 50, which includes a first clamping assembly 51 and a second clamping assembly 52 arranged parallel to a guide axis, and a straightening assembly 53 movable parallel to the guide axis. The straightening assembly 53 includes a gripping portion for gripping the catheter 110. The distance between the straightening assembly 53 and the first clamping assembly 51 and / or the second clamping assembly 52 is adjustable parallel to the guide axis.

[0073] In accordance with the fact that the guide axis of the straightening assembly extends in the vertical direction, the first tube clamping assembly 51 and the second tube clamping assembly 52 are arranged in the vertical direction.

[0074] The first clamping assembly 51 and the second clamping assembly 52 are used to clamp the outer wall of the catheter 110. The first clamping assembly 51 is located between the second clamping assembly 52 and the carrier 21. Before transferring the stop clamp 120 to the catheter 110, the first clamping assembly 51 is first fixedly clamped to the outer circumference of the catheter 110. The straightening assembly 53 then clamps the catheter 110 on the side of the first clamping assembly 51 that is closer to the alignment position and moves toward the alignment position in a direction parallel to the guide axis. During this process, the second clamping assembly 52 does not yet clamp the catheter 110 and remains in a waiting state.

[0075] When the distance between the straightening assembly 53 and the first clamping assembly 51 becomes greater than the distance between the second clamping assembly 52 and the first clamping assembly 51 in the waiting state, the second clamping assembly 52 moves closer to the catheter 110 and clamps the outer circumference of the catheter 110. Finally, the straightening assembly 53 is separated from the catheter 110. During the movement of the straightening assembly 53, the distance between the straightening assembly 53 and the first clamping assembly 51 and the second clamping assembly 52 changes.

[0076] The purpose of this process is to straighten the catheter 110 using the straightening assembly 53. After the straightening assembly 53 has completed straightening the catheter 110, the first clamping assembly 51 and the second clamping assembly 52 jointly clamp the catheter 110 to maintain the straightened shape. After the straightened catheter 110, the liquid stop clamp 120 can be applied to the catheter 110 more easily and quickly.

[0077] As a preferred embodiment of the present invention, the length of the push rod 22 is pre-configured to be approximately the same as the straightened length of the catheter 110 to be assembled. When the push rod 22 is fully inserted into the catheter 110, no natural bends appear in any part of the catheter 110. Of course, in other embodiments, the length of the push rod 22 is not limited to the above-mentioned dimensions.

[0078] For example, the straightening assembly may further include a tube-straightening finger clamp, and the length of the push rod 22 may be significantly smaller than the length of the straightened catheter 110. After the push rod 22 is inserted into the catheter 110, the end of the catheter 110 that is relatively close to the carrier is partially straightened by the push rod 22, while the remaining portion of the catheter 110 remains in a freely bent state. The carrier 21 may also drive the guide axis and the partially straightened portion of the catheter 110 to an aligned position. At this time, the guide axis and the axis of the partially straightened portion of the catheter 110 extend into the liquid-stop clamp through-channel 120. Subsequently, the straightening finger clamp is used to clamp the remaining unstraightened portion of the catheter 110, causing the tube-straightening finger clamp to translate along the axis of the push rod 22 relative to the carrier 21. Ultimately, the catheter 110 is fully straightened under the combined action of the push rod 22 and the tube-straightening finger clamp.

[0079] It is readily understood that the straightening assembly is not limited to the tappet 22. It can also be a groove adapted to the outer circumference of the catheter 110, or a plurality of claws arranged around the center of a straight line. The catheter 110 can be inserted into the groove or the gap between the claws. The groove or claws can also partially straighten the portion of the catheter 110 that is relatively close to the carrier 21. In this case, the guiding axis of the straightening assembly is the axis of the groove, or the centerline of the plurality of claws.

[0080] Furthermore, the catheter control mechanism 50 is not a required feature of the present invention. In other embodiments, the catheter control mechanism 50 may be omitted, and the transfer process can be initiated directly after the catheter 110 is connected to the straightening assembly, without straightening the catheter 110. Whether or not to straighten the catheter 110 depends on the material, hardness, and dimensions of the catheter 110.

[0081] The medical device assembly equipment 100 provided by the present invention uses a straightening component to straighten the catheter 110. Regardless of whether the through-channel of the catheter 110 and the accessory is clearance-fitted, transition-fitted, or even interference-fitted, the straightening component can straighten the catheter 110 to maintain the catheter 110 in a straight cylindrical shape, and the accessories can be transferred along the guide axis to the preset installation position of the catheter 110. The straightening constraint effect of the straightening component on the catheter 110 can prevent the catheter 110 from bending or wrinkling under the force of the accessory.

[0082] The various technical features of the above-described embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the various technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] Those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present invention and are not intended to limit the present invention. Any appropriate changes and modifications to the above embodiments fall within the scope of the present invention as long as they are within the spirit of the present invention.

Claims

1. A medical device assembly device for sleeve-mounting medical accessories on a catheter, characterized in that: It includes a transfer mechanism (10), a straightening mechanism (20), a catheter control mechanism and a transfer mechanism; The transfer mechanism (10) is used to transfer the accessory to the alignment position, and the transfer mechanism includes a swinging part rotatably mounted on the frame and a material extraction needle that penetrates the accessory. The swinging part can rotate relative to the frame to drive the material extraction needle and the accessory to move synchronously to the alignment position, and the material extraction needle is used to extend into the through-channel of the accessory; The straightening mechanism (20) comprises a carrier (21) for carrying the catheter (110) and a push rod mounted on the carrier (21), and has a guide axis for straightening the catheter (110), wherein the guide axis is the axis of the push rod (22), and the push rod extends into one end of the catheter (110), and the carrier (21) can drive the guide axis and at least a portion of the catheter (110) to synchronously point to the alignment position, so that the axis of the straightened portion of the catheter at least intersects the axis of the accessory through-channel; The catheter control mechanism includes a first clamping assembly, a second clamping assembly, and a straightening assembly. The first clamping assembly is located between the second clamping assembly and the carrier. The first clamping assembly is first fixedly clamped to the outer periphery of the catheter. The straightening assembly holds the catheter on a side of the first clamping assembly that is relatively close to the alignment position. The straightening assembly moves toward the alignment position in a direction parallel to the guide axis to straighten the catheter. When the distance between the straightening assembly and the first clamping assembly is greater than the distance between the second clamping assembly and the first clamping assembly, the second clamping assembly clamps the catheter. A space is left between the end of the conduit close to the alignment position and the end of the push rod away from the carrier, the tip of the material extraction needle extends out of the accessory and into the space, and the transfer mechanism is used to transfer the accessory from the alignment position to the conduit (110).

2. The medical device assembly equipment according to claim 1, characterized in that: The push rod (22) can drive the push rod (22) away from one end of the carrier (21) and at least a portion of the guide tube (110) to point to the alignment position under the control of the carrier (21).

3. The medical device assembly equipment according to claim 1 or 2, characterized in that: When the transfer mechanism (10) transfers the accessory to the alignment position, the carrier (21) can drive the guide axis and the axis of the straight portion of the conduit (110) to synchronously pass through the through-channel of the accessory.

4. The medical device assembly equipment according to claim 3, characterized in that: The material taking needle (12) is arranged perpendicular to the rotation center of the swinging part (11).

5. The medical device assembly equipment according to claim 4, characterized in that: When the material picking needle (12) is in the alignment position, the carrier (21) can drive the guide axis to point to the tip of the material picking needle (12).

6. The medical device assembly equipment according to claim 1, characterized in that: The transfer mechanism includes a detection module for detecting that the conduit (110) passes through an opening in the accessory through-channel away from the carrier (21).

7. The medical device assembly equipment according to claim 6, characterized in that: The detection module is a through-beam optical fiber sensor (31).

8. The medical device assembly equipment according to claim 1, wherein: The guide axis extends in a vertical direction.

9. The medical device assembly equipment according to claim 1, wherein: The first tube clamping assembly and the second tube clamping assembly are arranged in a direction parallel to the guide axis, and the straightening assembly (53) has a holding portion for holding the catheter (110); in a direction parallel to the guide axis, the distance between the straightening assembly (53) and the first tube clamping assembly (51) and / or the second tube clamping assembly (52) is adjustable.

10. The medical device assembly equipment according to claim 1, wherein: The transfer mechanism comprises a transfer assembly (32) for contacting the accessory, wherein the transfer assembly (32) is provided with a prying protrusion matched with the accessory, and the prying protrusion can abut against the claw of the accessory when the transfer assembly (32) applies force to the accessory, so as to increase the minimum passing diameter of the accessory.

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