Socket device and medical device production line

Abstract

The present invention relates to a sleeve connection device and a medical device production line, comprising a sleeve connection linkage and a sleeve connection drive. The sleeve connection device also includes a guide member, one end of which is provided with a positioning hole, a needle body is inserted into the positioning hole, and a sheath is sleeved on the outside of the guide member. The sleeve connection linkage is used to drive the sheath to move, and the sleeve connection drive drives the sleeve connection linkage to move the sheath toward the needle body so that the needle body and the sheath are sleeved. The beneficial effect of the present invention is that the sleeve connection device can prevent the needle tip from piercing the sheath when the needle body and the sheath are sleeved, thereby improving production efficiency.

Description

Technical Field

[0001] The present invention relates to medical devices, and in particular to a sleeve device and a medical device production line. Background Art

[0002] Some medical devices include a needle body and a sheath, and the needle body needs to be sleeved inside the sheath. The needle body is made of a rigid material, while the sheath is made of a flexible material, and the sheath protects the needle body. In the automated production process of such medical devices, the sheath is usually clamped by a sleeve clamping assembly and driven to move relative to the needle body, so that the needle body and the sheath are sleeved. However, the sheath is made of a flexible material, so when the sleeve clamping assembly clamps the sheath, the sheath is easily bent, which makes it easy for the needle tip to pierce the sheath, affecting production efficiency and needs to be improved. Summary of the Invention

[0003] In view of this, it is necessary to provide an improved sleeve device and a medical device production line, which can prevent the needle tip of the needle body from piercing the sheath when the needle body and the sheath are sleeved, thereby improving production efficiency. The medical device production line using the sleeve device has high production efficiency.

[0004] The present invention first provides a socket device, including a socket linkage and a socket drive member. The socket device also includes a guide member. A positioning hole is provided at one end of the guide member. The needle body is inserted into the positioning hole. The sheath is sleeved on the outside of the guide member. The socket linkage is used to drive the sheath to move. The socket drive member drives the socket linkage to drive the sheath to move toward the needle body so that the needle body and the sheath are socketed.

[0005] By adopting the above technical solution, when the needle body and the sheath are connected, the needle tip can enter the positioning hole, so that when the sheath moves toward the needle body, it can avoid the needle tip of the needle body, thereby preventing the needle tip from piercing the sheath. Since both the needle body and the guide member are rigid structures, the needle tip of the needle body will generally not pierce the guide member when entering the positioning hole, thereby improving production efficiency.

[0006] In one embodiment of the present invention, the sleeve connection device further comprises a positioning member, wherein the positioning member abuts against an end of the needle body away from the guide member.

[0007] By adopting the above technical solution, when the sleeve drive member drives the sleeve linkage member to move the sheath toward the needle body so that the needle body and the sleeve are sleeved, the sheath will exert an effect on the needle body, and the needle body may move under the action of the sheath, affecting production efficiency. The positioning member abuts the end of the needle body away from the guide member, so that the needle body is restricted by the positioning member and cannot move under the action of the sheath, thereby improving production efficiency.

[0008] In one embodiment of the present invention, the sleeve device further comprises a guide alignment member, the guide alignment member being used to surround a sheath sleeved outside the guide member to limit the orientation of the guide member;

[0009] And / or, the sleeve device further includes a sleeve alignment member, and the sleeve alignment member is used to surround the needle body to limit the direction of the needle body.

[0010] By adopting the above technical solution, the guide alignment member surrounds the sheath to limit the direction of the guide member, thereby controlling the direction of the guide member, so that the needle body can be inserted into the positioning hole more accurately. The sleeve alignment member surrounds the needle body to limit the direction of the needle body, so that the needle body can be inserted into the positioning hole more accurately.

[0011] In one embodiment of the present invention, the guide member includes a main body portion and a guide portion connected to each other, and the positioning hole is provided in the guide portion.

[0012] By adopting the above technical solution, when the needle body and sheath are connected, as long as the needle tip can enter the positioning hole, the sheath can avoid the needle tip when moving toward the needle body, thereby preventing the needle tip from piercing the sheath. Therefore, the positioning holes do not need to be distributed throughout the guide member, but only need to be distributed in the guide portion, thereby reducing the difficulty of manufacturing the guide member.

[0013] In one embodiment of the present invention, the guide member is provided with an avoidance groove penetrating the guide member, and the avoidance groove is communicated with the positioning hole.

[0014] By adopting the above technical solution, when the needle tip enters the positioning hole, there is a certain probability that the needle tip will pierce the guide member. Therefore, the provision of the avoidance groove reduces the probability of the needle tip entering the positioning hole piercing the guide member, thereby improving production efficiency.

[0015] In one embodiment of the present invention, the guide member includes a main body and a guide portion connected to each other, the positioning hole is provided in the guide portion, and the outer diameter of the guide portion decreases from an end close to the main body to an end away from the main body.

[0016] By adopting the above technical solution, the guide portion can guide the sheath to be sleeved on the outside of the guide member.

[0017] In one embodiment of the present invention, the sleeve device also includes a placement table, a flaring piece, a limiting piece and a flaring drive piece. The placement table is provided with a limiting groove located between the flaring piece and the limiting piece. The sheath is located in the limiting groove. The flaring drive piece drives one end of the flaring piece to extend into one end of the sheath and drives the other end of the sheath to abut against the limiting piece. The outer diameter of the flaring piece gradually increases from the end close to the limiting piece to the end away from the limiting piece.

[0018] By adopting the above technical solution, the expansion piece can enlarge the diameter of the sheath, making it easier to assemble the sheath with the needle body.

[0019] In one embodiment of the present invention, the sleeve connection device further comprises a transfer drive and a transfer clamp, wherein the transfer drive is used to drive the transfer clamp to move so that the end of the sheath away from the expansion member is aligned with the guide member.

[0020] In one embodiment of the present invention, the transfer drive member includes a translation drive portion and a rotation drive portion, the translation drive portion drives the transfer clamp to move translationally, and the rotation drive portion drives the transfer clamp to rotate so that the axial direction of the sheath changes from being parallel to the horizontal plane to being parallel to the vertical plane.

[0021] In one embodiment of the present invention, the sleeve device further includes a silo, a suction piece and a suction drive piece, wherein the silo is used to store the sheath, the suction drive piece drives the suction piece to enter and leave the silo, and the suction piece sucks the sheath when entering the silo.

[0022] In one embodiment of the present invention, there are a plurality of the material bins, and the sleeve device further includes a material-changing driving member, which drives the plurality of the material bins to move alternately to the moving direction of the material suction member.

[0023] In one embodiment of the present invention, the sleeve linkage clamps the sheath to drive the sheath to move;

[0024] Alternatively, the sleeve linkage member abuts against an end of the sheath away from the needle body.

[0025] The present invention further provides a medical device production line, comprising the above-mentioned sleeve connection device.

[0026] By adopting the above technical solution, the production line of medical devices using the sleeve device has higher production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of a sleeve device according to an embodiment of the present invention;

[0028] Figure 2 Schematic diagram of the structure of the transfer assembly and the flaring assembly in an embodiment of the present invention;

[0029] Figure 3 Schematic diagram of the structure of the guide assembly and the socket assembly in an embodiment of the present invention;

[0030] Figure 4 This is a schematic structural diagram of a guide assembly in an embodiment of the present invention;

[0031] Figure 5 for Figure 4 Enlarged view of area A in the middle;

[0032] Figure 6 Schematic diagram of the structure of the socket assembly and the positioning assembly in an embodiment of the present invention.

[0033] Reference numerals: 100, suction assembly; 110, hopper; 120, suction member; 130, suction drive member; 200, transfer assembly; 210, transfer clamping member; 211, material picking clamping portion; 212, material discharge clamping portion; 220, transfer drive member; 221, translation drive portion; 221a, vertical translation portion; 221b, horizontal translation portion; 222, rotation drive portion; 300, flaring assembly; 310, placement table; 311, placement portion; 312, protrusion; 312a, limiting groove; 320, flaring member; 330, Limiting member; 340, flaring drive member; 400, guide assembly; 410, guide member; 411, main body; 412, guide part; 412a, positioning hole; 413, avoidance groove; 420, guide alignment member; 430, guide drive member; 431, horizontal guide drive part; 432, vertical guide drive part; 440, push plate; 500, socket clamping assembly; 510, socket linkage member; 520, socket drive member; 530, socket alignment member; 600, positioning assembly; 610, positioning member; 620, positioning drive member. DETAILED DESCRIPTION

[0034] 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.

[0035] It should be noted that when a component is referred to as being "mounted on" another component, it may be mounted directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component. When a component is considered to be "fixed to" another component, it may be directly fixed to the other component or there may be a central component.

[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 embodiment of the present invention first provides Figure 1 The sleeve connection device shown includes a material suction component 100, a transfer component 200, a flaring component 300, a guide component 400, a sleeve connection clamping component 500, and a positioning component 600.

[0038] Reference Figure 1 The suction assembly 100 includes a plurality of silos 110, a suction member 120, a suction drive 130, and a material-changing drive. The silo 110 is used to store the sheaths, and the axial direction of the sheaths in the silo 110 is parallel to the horizontal plane. The suction drive 130 drives the suction member 120 to enter and leave the silo 110. When entering the silo 110, the suction member 120 can suck the side wall of the sheath so that the sheath can follow the suction member 120 out of the silo 110. The material-changing drive drives the plurality of silos 110 to move alternately to the moving direction of the suction member 120, so that after all the sheaths in one of the silos 110 are sucked away by the suction member 120, the sheaths in another silo 110 can be sucked away by the suction member 120.

[0039] Reference Figure 2 The transfer assembly 200 includes a transfer clamping member 210 and a transfer driving member 220. The transfer clamping member 210 includes a material picking clamping portion 211 and a material unloading clamping portion 212 connected to each other. The transfer driving member 220 includes a translation driving portion 221 and a rotation driving portion 222 connected to each other. The translation driving portion 221 can simultaneously drive the material picking clamping portion 211 and the material unloading clamping portion 212 to move, while the rotation driving portion 222 can only drive the material unloading clamping portion 212 to rotate. The translation driving portion 221 includes a vertical translation portion 221a and a horizontal translation portion 221b. Among them, the vertical translation portion 221a is used to simultaneously drive the material picking clamping portion 211 and the material unloading clamping portion 212 to move vertically, and the horizontal translation portion 221b is used to simultaneously drive the material picking clamping portion 211 and the material unloading clamping portion 212 to move horizontally. Driven by the translational drive unit 221, the material-retrieving clamping unit 211 approaches the suction member 120 after it has left the hopper 110, and then clamps the sheath adsorbed on the suction member 120. Driven by the translational drive unit 221, the material-retrieving clamping unit 211 moves away from the suction member 120. Simultaneously, the material-discharging clamping unit 212 also moves accordingly. Driven by the suction drive unit 130, the suction member 120 can then reenter the hopper 110 to retrieve the sheath.

[0040] Reference Figure 2 The flaring assembly 300 includes a placement platform 310, a flaring member 320, a limiting member 330 and a flaring driving member 340. The placement platform 310 includes a placement portion 311 and two protrusions 312 connected to each other. The two protrusions 312 are connected to the two ends of the same side of the placement portion 311. The surfaces of the two protrusions 312 are provided with limiting grooves 312a, and the extending direction of the limiting grooves 312a is parallel to the horizontal plane. The two ends of the limiting groove 312a of each protrusion 312 pass through the corresponding protrusion 312. Figure 2 In the specific embodiment shown, the limiting groove 312a is in the shape of a triangle. The flaring member 320 and the limiting member 330 are respectively located at both ends of the placement platform 310 along the extension direction of the limiting groove 312a. The limiting member 330 is fixedly connected to the placement platform 310 and the limiting member 330 and the placement platform 310 are spaced apart. The flaring drive member 340 is fixed to the side of the placement portion 311 away from the protrusion 312. The flaring drive member 340 is connected to the flaring member 320 and can drive the flaring member 320 to move toward and away from the limiting member 330. Under the drive of the translation drive portion 221, the material taking clamping portion 211 transfers the sheath to the limiting groove 312a. At this time, the material taking clamping portion 211 releases the sheath, and the flaring member 320 is exactly aligned with the sheath in the limiting groove 312a. The expansion drive 340 drives one end of the expansion member 320 into one end of the sheath, forcing the other end of the sheath into contact with the stopper 330. The outer diameter of the expansion member 320 gradually increases from the end closest to the stopper 330 to the end further away from the stopper 330, thereby expanding the end of the sheath where the expansion member 320 is inserted. When the sheath is fully expanded, the discharging clamp 212, driven by the translation drive 221, approaches the expanded sheath and then clamps it. Simultaneously, the retrieving clamp 211 reapproaches the suction member 120. As the preceding sheath expands, the suction member 120 simultaneously enters the hopper 110 to absorb the following sheath and then exits the hopper 110. Therefore, while the discharging clamp 212 clamps the preceding expanded sheath, the retrieving clamp 211 clamps the following sheath.

[0041] Reference Figure 3 、 Figure 4 and Figure 5The guide assembly 400 includes a guide member 410, a guide alignment member 420, and a guide drive member 430. The guide member 410 includes a main body 411 and a guide member 412 connected to each other. The outer diameter of the main body 411 remains unchanged from the end close to the guide member 412 to the end away from the guide member 412, while the outer diameter of the guide member 412 decreases from the end close to the main body 411 to the end away from the main body 411. Driven by the translation drive 221, the discharge clamping portion 212 drives the expanded sleeve to move toward the guide member 410 and leave the limiting groove 312a. As the discharge clamping portion 212 moves to the top of the guide member 410, the rotation drive 222 drives the discharge clamping portion 212 to rotate, so that the sleeve changes from a horizontal extension state with its axial direction parallel to the horizontal plane to a vertical extension state with its axial direction parallel to the vertical plane, and at the same time, the end of the sleeve away from the expansion member 320 approaches the guide member 410. Subsequently, continued drive by the translational drive unit 221, the material discharging clamping unit 212 drives the expanded sheath to begin to fit onto the exterior of the guide unit 412. After the sheath is partially fitted onto the exterior of the guide unit 412, the material discharging clamping unit 212 releases the sheath. Thereafter, guided by the guide unit 412 and under the action of the sheath's own gravity, the sheath is completely fitted onto the guide member 410. At this point, the guide alignment member 420 clamps the sheath. While the material discharging clamping unit 212 drives the preceding sheath to fit onto the exterior of the guide member 410, the material discharging clamping unit 211 synchronously drives the succeeding sheath into the limiting groove 312a. The guide drive member 430 includes a horizontal guide drive unit 431 and a vertical guide drive unit 432. The horizontal guide drive unit 431 drives the guide member 410 to move toward and away from the needle extension direction, while the vertical guide drive unit 432 drives the guide member 410 to move vertically toward and away from the needle. The end of the guide portion 412 away from the main body 411 is provided with a positioning hole 412a, and the positioning hole 412a is located outside the sheath. The positioning hole 412a is provided with a chamfer to guide the needle body into the positioning hole 412a. The aperture of the positioning hole 412a is as large as possible to facilitate the needle body to be inserted into the positioning hole 412a. Figure 5 In the specific embodiment shown, the axis center line of the positioning hole 412a coincides with the axis center line of the guide member 410. Therefore, in the process of the guide member 410 moving vertically toward the needle body, the needle tip of the needle body will be inserted into the positioning hole 412a. The guide alignment member 420 clamps the guide member 410 while clamping the sheath, thereby controlling the direction of the guide member 410, so that the needle body can be more accurately inserted into the positioning hole 412a. When the needle body and the sheath are socketed, as long as the needle tip of the needle body can enter the positioning hole 412a, the sheath can avoid the needle tip of the needle body when moving toward the needle body, thereby preventing the needle tip of the needle body from piercing the sheath. Therefore, the positioning holes 412a do not need to be distributed throughout the guide member 410, but only need to be distributed in the guide portion 412, thereby reducing the difficulty of processing the guide member 410. Figure 3In the specific embodiment shown, the guide assembly 400 also includes a push plate 440. The push plate 440 is located in the extension direction of the guide member 410. After the sleeve is partially sleeved on the outside of the guide portion 412, the vertical guide drive portion 432 will drive the guide member 410 and the guide alignment member 420 to approach the push plate 440. In the process of the guide member 410 moving to contact the push plate 440, part of the sleeve that is sleeved with the guide member 410 will contact the push plate 440 before the guide member 410, so that the push plate 440 can push the sleeve to be fully sleeved with the guide member 410. At this time, the guide alignment member 420 clamps the sleeve. The setting of the push plate 440 can prevent the sleeve from being unable to be fully sleeved with the guide member 410 under the guidance of the guide portion 412 and the action of the sleeve's own gravity. After the guide member 410 contacts the push plate 440, the vertical guide drive portion 432 drives the guide member 410 and the guide alignment member 420 to reset. Figure 5 In the illustrated embodiment, the guide member 410 is provided with a relief groove 413 extending therethrough, which communicates with the positioning hole 412a. As the needle tip enters the positioning hole 412a, there is a certain probability that the needle tip will pierce the guide member 410. Therefore, the provision of the relief groove 413 reduces the probability of the needle tip entering the positioning hole 412a piercing the guide member 410, thereby improving production efficiency.

[0042] Reference Figure 6The sleeve clamping assembly 500 includes a sleeve linkage 510, a sleeve drive 520, and a sleeve alignment member 530. When the needle tip is inserted into the positioning hole 412a, the sleeve drive 520 drives the sleeve linkage 510 to align with the sheath and clamp it. The guide alignment member 420 releases the sheath, and the sheath moves toward the needle body along with the sleeve linkage 510 under the action of the sleeve drive 520, achieving the sleeve connection between the sleeve and the needle body. During the sleeve connection process, the expanded end of the sheath will eventually mate with the needle body, achieving the correct alignment between the sheath and the needle body. The expansion member 320 can expand the caliber of the sheath, making it easier to assemble the sheath with the needle body. During the sleeve connection between the needle body and the sheath, the needle tip can enter the positioning hole 412a, allowing the sheath to avoid the needle tip when moving toward the needle body, thereby preventing the needle tip from piercing the sheath. The needle body and the guide member 410 are both rigid structures, so that the needle tip of the needle body usually does not pierce the guide member 410 when entering the positioning hole 412a, thereby improving production efficiency. The socket alignment member 530 clamps the end of the needle body close to the guide member 410 to limit the direction of the needle body, so that the needle body can be inserted into the positioning hole 412a more accurately. The socket alignment member 530 is connected to the socket linkage member 510 to enable the socket alignment member 530 and the socket linkage member 510 to move together under the drive of the socket drive member 520. During the socketing process of the sheath and the needle body, the socket alignment member 530 clamps the needle body earlier than the socket linkage member 510 clamps the sheath, and the needle tip of the needle body is inserted into the positioning hole 412a later than the socket alignment member 530 clamps the needle body but earlier than the socket linkage member 510 clamps the sheath.

[0043] Reference Figure 6 The positioning assembly 600 includes a positioning member 610 and a positioning drive member 620. The positioning drive member 620 drives the positioning member 610 to abut against the end of the needle body away from the needle tip, thereby preventing the needle body from moving relative to the conveying device along with the sheath when the sheath is sleeved on the needle body. The sleeve drive member 520 drives the sleeve linkage member 510 to move the sheath toward the needle body so that when the needle body and the sheath are sleeved, the sheath will act on the needle body, so that the needle body may move under the action of the sheath, affecting production efficiency. The positioning member 610 abuts against the end of the needle body away from the guide member 410, so that the needle body is restricted by the positioning member 610 and cannot move under the action of the sheath, thereby improving production efficiency.

[0044] It is understandable that the shape of the limiting groove 312a can be replaced by other shapes such as square, semicircle, or ellipse instead of triangle. The shape of the limiting groove 312a only needs to be able to limit the sheath in a direction perpendicular to the extending direction of the limiting groove 312a.

[0045] It is understood that if the stopper 330 is replaced with the flaring member 320, then when the sheath is flared, both ends of the sheath will be inserted into the flaring member 320, and the two flaring members 320 can be connected to the same flaring driver 340 or to different flaring drivers 340. In this case, the outer diameter of the guide portion 412 does not need to decrease from the end closer to the main body 411 to the end farther away from the main body 411.

[0046] It can be understood that if the guide assembly 400 also includes an alignment drive member for driving the guide alignment member 420 to move relative to the guide member 410 along the axial direction of the guide member 410, then the guide alignment member 420 can serve as a socket linkage member 510, and the socket clamping assembly 500 can cancel the socket linkage member 510 and the socket drive member 520.

[0047] It is understandable that the sleeve linkage 510 can no longer clamp the sheath, but can be sleeved on the outside of the guide member 410. When the sheath is sleeved on the outside of the guide member 410, the sleeve linkage 510 abuts against the end of the sheath away from the needle body. The sleeve drive member 520 drives the sleeve linkage 510 to move toward the needle body, driving the sheath to move toward the needle body so that the needle body and the sheath are sleeved. At this time, the guide alignment member 420 needs to be canceled. The sleeve linkage 510 includes an abutment portion that abuts against the end of the sheath away from the needle body and a limiting portion that abuts against the side wall of the sheath. The sheath cannot enter between the abutment portion and the guide member 410, but can enter between the limiting portion and the guide member 410. At this time, the limiting portion plays the role of surrounding the sheath to limit the direction of the guide member 410.

[0048] It is understood that the sleeve alignment member 530 and the sleeve linkage member 510 can be disconnected and driven by another power source, so that the sleeve alignment member 530 and the sleeve linkage member 510 can move separately. In this case, during the sleeve connection process between the sheath and the needle body, the sleeve alignment member 530 can clamp the needle body simultaneously with the sleeve linkage member 510 clamping the sheath, or it can clamp the sheath earlier than the sleeve linkage member 510.

[0049] Another embodiment of the present invention provides a medical device production line including the sleeve connection device of the above embodiment. The medical device production line using the sleeve connection device has high production efficiency.

[0050] 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.

[0051] 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 sleeve device, comprising a sleeve linkage member (510) and a sleeve drive member (520), characterized in that: The sleeve connection device further comprises a guide member (410), the guide member (410) comprising a main body (411) and a guide member (412), a positioning hole (412a) being provided at one end of the guide member (412) away from the main body (411), the positioning hole (412a) being used for passing the needle tip of the needle body, the sheath being sleeved on the outside of the guide member (410), the sleeve connection linkage member (510) being used for driving the sheath to move, and the sleeve connection driving member (520) driving the sleeve connection linkage member (510) to drive the sheath to move from the guide member (410) toward the needle body so that the needle body and the sheath are sleeved; When the needle body and the sheath are connected, the needle tip of the needle body is located in the positioning hole (412a), and when the sheath moves from the guide member (410) to the needle body, the sheath can avoid the needle tip of the needle body; The sleeve connection device further comprises a guide alignment member (420), wherein the guide alignment member (420) is used to surround a sheath sleeved outside the guide member (410) to limit the orientation of the guide member (410); and / or, The sleeve device further comprises a sleeve alignment member (530), and the sleeve alignment member (530) is used to surround the needle body to limit the direction of the needle body.

2. The sleeve device according to claim 1, characterized in that: The sleeve connection device further comprises a positioning member (610), wherein the positioning member (610) abuts against an end of the needle body away from the guide member (410).

3. The sleeve connection device according to claim 1, characterized in that: The guide member (410) is provided with an avoidance groove (413) penetrating the guide member (410), and the avoidance groove (413) is communicated with the positioning hole (412a).

4. The sleeve device according to claim 1, characterized in that: The outer diameter of the guide portion (412) decreases from an end close to the main body portion (411) to an end away from the main body portion (411).

5. The sleeve connection device according to claim 1, characterized in that: The sleeve connection device further comprises a placement platform (310), a flaring member (320), a limiting member (330) and a flaring drive member (340); the placement platform (310) is provided with a limiting groove (312a) located between the flaring member (320) and the limiting member (330); the sheath is located in the limiting groove (312a); the flaring drive member (340) drives one end of the flaring member (320) to extend into one end of the sheath and drives the other end of the sheath to abut against the limiting member (330); the outer diameter of the flaring member (320) gradually increases from the end close to the limiting member (330) to the end away from the limiting member (330).

6. The sleeve device according to claim 5, characterized in that: The sleeve connection device further comprises a transfer drive member (220) and a transfer clamp member (210), wherein the transfer drive member (220) is used to drive the transfer clamp member (210) to move so that the end of the sheath away from the expansion member (320) is aligned with the guide member (410).

7. The sleeve device according to claim 6, characterized in that: The transfer drive member (220) includes a translation drive portion (221) and a rotation drive portion (222). The translation drive portion (221) drives the transfer clamping member (210) to translate, and the rotation drive portion (222) drives the transfer clamping member (210) to rotate so that the axial direction of the sheath changes from being parallel to the horizontal plane to being parallel to the vertical plane.

8. The sleeve connection device according to claim 1, characterized in that: The sleeve connection device further comprises a material bin (110), a material suction piece (120) and a material suction driving piece (130), wherein the material bin (110) is used to store the sheath, and the material suction driving piece (130) drives the material suction piece (120) to enter and leave the material bin (110), and the material suction piece (120) sucks the sheath when entering the material bin (110).

9. The sleeve device according to claim 8, characterized in that: There are multiple silos (110), and the sleeve device further includes a material-changing driving member, which drives the multiple silos (110) to move alternately to the moving direction of the material suction member (120).

10. The sleeve connection device according to claim 1, characterized in that: The sleeve linkage member (510) clamps the sheath to drive the sheath to move; Alternatively, the sleeve linkage member (510) abuts against an end of the sheath away from the needle body.

11. A medical device production line, characterized by: The invention comprises a sleeve device according to any one of claims 1 to 10.

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