A tubular structure and connector assembly device

Abstract

The present invention provides a device for assembling a tubular structure and a connector, comprising: a base; a first support platform and a second support platform which are arranged adjacent to each other and are disposed on the base. A placement groove is provided on one of the first support platform and the second support platform, and a fixing portion is provided on the other. A fixing groove is formed on the fixing portion for realizing the clamping operation on the tubular structure; a pistol drill is disposed on a side of the first support platform away from the second support platform. The pistol drill is adapted to drive the connector to rotate and translate close to the first support platform. In the assembled state, the axis of the connector is collinear with the axis of the placement groove and the axis of the fixing groove. By driving the pistol drill to drive the connector to expand one end of the tubular structure to achieve assembly, the problems that medical devices applying catheter and wire technologies have weak reliability after preparation and pose risks to subsequent treatments are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of micro medical devices, and particularly relates to an assembly device for a tubular structure and a connector. Background Art

[0002] With the development of medical technology, the application of catheter and wire technologies in human organs for the treatment of organ diseases is becoming more and more widespread. For example, when treating cardiovascular system diseases, balloon catheters can be used to relieve valvular stenosis, relieve stenosis of coronary arteries, renal arteries and other peripheral arteries, etc.; when treating non-cardiovascular system diseases, vascular catheters can be used to inject adhesives to fill arterial blood vessels, thereby treating various hemangiomas.

[0003] In the above-mentioned medical devices, connection structures such as catheters and wires are usually adopted. These structures generally include a main body section, with an operating end provided at one end of the main body section and an acting end provided at the other end. For example, for a balloon catheter, it includes a main body catheter, with a distal balloon provided at one end of the main body catheter and a Luer connector provided at the other end.

[0004] In the prior art, in order to achieve the assembly operation between the main body section and the operating end or the acting end, the main body section and the operating end are usually first fitted through a gap, and then fixed directly by bonding or welding between the two. The above connection method is first prone to insufficient connection strength, resulting in easy loosening during the treatment process. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the medical devices applying catheter and wire technologies in the prior art have weak reliability after being prepared and pose risks to subsequent treatments.

[0006] To solve the above problems, the present invention provides an assembly device for a tubular structure and a connector, where the inner diameter of the end of the connector is greater than the inner diameter of the tubular structure, and includes:

[0007] A base;

[0008] A first support platform and a second support platform arranged adjacent to each other, provided on the base, and a placement groove is provided on one of the first support platform and the second support platform;

[0009] A fixing part, provided on the other of the first support platform and the second support platform, and a fixing groove is formed on the fixing part for realizing the clamping operation of the tubular structure;

[0010] A pistol drill is provided on the side of the first support platform away from the second support platform. A connector is provided at the end. The pistol drill is adapted to drive the connector to rotate and translate closer to the first support platform. In the assembled state, the axis of the connector is collinear with the axis of the placement groove and the axis of the fixing groove. The connector is used to drive the connector to rotate.

[0011] Preferably, waist-shaped long holes are provided at positions on the base corresponding to the first support platform and / or the second support platform, and the first support platform can move relative to the second support platform.

[0012] Preferably, a clamping portion is provided on the first support platform, and a space for clamping the connector is formed between the clamping portion and the first support platform.

[0013] Preferably, a threaded hole is provided at the top of the first support platform. The clamping portion includes:

[0014] A clamping block is provided above the first support platform, and a number of through holes are provided thereon;

[0015] Screws corresponding to the through holes are connected to the threaded hole;

[0016] A return spring corresponding to the screw abuts against the clamping block and the screw at both ends respectively.

[0017] Preferably, the fixing portion includes: a first fixing block and a second fixing block arranged opposite to each other, and the fixing grooves are correspondingly provided on the first fixing block and the second fixing block;

[0018] A receiving portion is provided on the second support platform in a sunken manner. The fixing portion is arranged in the receiving portion. A threaded through hole and a fastening handle matched with the threaded through hole are correspondingly provided on the second support platform. The fastening handle is adapted to rotate relative to the threaded through hole so that the first fixing block and the second fixing block approach each other.

[0019] Preferably, a step is provided on the receiving portion, and the step is provided on the side of the fixing portion away from the first support platform.

[0020] Preferably, a measuring portion is provided on the second support platform for observing the state of the tubular structure relative to the insertion into the connector.

[0021] Preferably, the measuring portion includes:

[0022] A side threaded hole on the second support platform and a shoulder screw corresponding to the side threaded hole; and

[0023] A scale, on which a through hole suitable for the shoulder screw to pass through is provided.

[0024] Preferably, the measuring part further includes: a limiting groove, the limiting groove is provided with a limiting edge, and the limiting edge extends towards the first support platform.

[0025] Preferably, the fixing part includes:

[0026] A connecting hole provided on the second support platform;

[0027] An external thread boss, provided on the inner wall of the connecting hole;

[0028] A chuck, provided at the inner wall position of the external thread boss;

[0029] A locking member, on which an internal thread matching the external thread boss is provided, for rotating and clamping the external thread boss.

[0030] Preferably, it further includes a mandrel, one end of which is suitable for being connected to the connector and is sleeved on the tubular structure.

[0031] The present invention has the following advantages:

[0032] 1. For the tubular structure and connector assembly device provided by the present invention, the pistol drill is arranged on the side of the first support platform away from the second support platform, and a connecting head is provided at the end. The pistol drill is suitable for driving the connecting head to rotate and translate close to the first support platform. In the assembled state, the axis of the connecting head is collinear with the axis of the placement groove and the axis of the fixing groove, and the connecting head is used to drive the connector to rotate.

[0033] By driving the pistol drill to drive the connector to rotate, one end of the tubular structure is expanded, so as to push out the mandrel to have an interference fit with the operating end, improving the assembly strength of the main body section and the operating end. Furthermore, it can effectively solve the problem of too low connection strength caused by the clearance fit and glue connection methods in the prior art.

[0034] In addition, the setting of the placement groove and the fixing part can fix and limit the positions of the connector and the tubular structure, thereby avoiding uneven stress on the tubular structure during the assembly process and reducing the rejection rate during the assembly process. In the assembled state, the axis of the connector, the axis of the placement groove and the axis of the fixing groove are collinear, which can avoid the skew of the mandrel during the pushing process, thereby improving the yield rate of the assembly.

[0035] 2. For the tubular structure and connector assembly device provided by the present invention, by setting the measuring part, the pushing-out length of the mandrel can be accurately mastered, and at the same time, the relative position of the connector inside the tubular structure can be obtained, so as to clearly know the connection state between the two, and further ensure the improvement of the assembly accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0037] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0038] Figure 2 It is a schematic diagram of the main structure of the first support platform of the present invention;

[0039] Figure 3 It is a schematic diagram of the main structure of the second support platform of the present invention.

[0040] Description of reference numerals: 1, base; 100, waist-shaped long hole; 2, first support platform; 200, clamping part; 2001, threaded hole; 2002, clamping block; 2003, through hole; 2004, screw; 2005, return spring; 2006, placement groove; 3, second support platform; 300, fixing part; 3001, first fixing block; 3002, second fixing block; 3003, fixing groove; 301, accommodating part; 3011, threaded through hole; 3012, fastening handle; 3013, step; 302, measuring part; 3021, side threaded hole; 3022, shoulder screw; 3023, scale; 3024, limiting groove; 3004, connecting hole; 3005, external thread boss; 3006, chuck; 3007, locking part; 500, hand drill cavity; 550, connector; 560, tubular structure; 570, mandrel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0041] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0042] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0043] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0045] Embodiment

[0046] During the process of assembling the main body section and the operation section of traditional medical devices, it is necessary to flare one end of the main body section, then sleeved the operation section at the flared main body section, and then fix them directly by bonding or welding. There is a problem of weak connection reliability in this assembly process. The present invention can push the mandrel in the tubular structure forward while expanding the tubular structure at one end of the main body section, so that the mandrel extruded from the other end of the tubular structure and the operation end achieve interference fit, thereby improving the connection strength between the operation section and the main body section.

[0047] In one embodiment, please refer to Figures 1 - 3 , the embodiment of the present invention provides a device for assembling a tubular structure and a connector, which is used to realize the assembly operation between the tubular structure and the connector. Among them, the tubular structure can be a catheter or a wire. Specifically, the catheter and the wire generally include: a net-shaped tubular structure main body section, a distal acting end, and a proximal operation end. Such as the distal balloon of a balloon catheter, the main catheter, and the proximal luer connector; the distal electrode head of an electrode wire, the main wire section, and the proximal connector; the distal stent of a stent delivery system, the catheter of the main body section, and the proximal operation handle.

[0048] In this embodiment, the tubular structure is a wire. The central material of the wire is a mandrel with good conductivity. The outer wall of the mandrel is wrapped with a mesh wire tube. When the wire tube and the mandrel are subjected to a thrust greater than or equal to the preset thrust, the mandrel can be pushed out. When the thrust is less than the preset thrust, the mandrel will not be pushed out. The pushed-out mandrel will have an interference fit with the connector / operating handle, thus completing the assembly, and the interference fit can improve the assembly strength.

[0049] In this embodiment, the inner diameter of the end of the connector 550 is greater than the inner diameter of the tubular structure 560. Through the above-mentioned dimension setting method, the connector 550 can be used to expand the diameter of the end of the tubular structure 560, including:

[0050] Base 1. In this embodiment, as Figure 1 shown, the base 1 is arranged in a plate shape and is used to support other structures;

[0051] The adjacent first support platform 2 and second support platform 3 are arranged on the base 1. A placement groove 2006 is arranged on one of the first support platform 2 and the second support platform 3;

[0052] Specifically, from the perspective as Figure 1 shown, the first support platform 2 is arranged on the left side of the second support platform 3. The placement groove 2006 is arranged in a concave shape on the first support platform 2 or the second support platform 3. The tubular structure can be prevented from shaking through the placement groove 2006. At the same time, the placement groove 2006 itself can be arranged in a regular semi-circular or semi-elliptical shape, or in an irregular shape, as long as it can achieve the function of accommodation;

[0053] The fixing part 300 is arranged on the other one of the first support platform 2 and the second support platform 3. A fixing groove 3003 is formed on the fixing part 300 for clamping the tubular structure 560;

[0054] Specifically, the structure of the fixing part 300 itself is not limited. Together with the placement groove 2006, it can limit at least two parts of the tubular structure 560, so as to prevent the tubular structure 560 from shaking;

[0055] The pistol drill 500 is arranged on the side of the first support platform 2 away from the second support platform 3. A connecting head is arranged at the end. The pistol drill 500 is adapted to drive the connecting head to rotate and translate close to the first support platform 2. In the assembled state, the axis of the connecting head is collinear with the axis of the placement groove 2006 and the axis of the fixing groove 3003. The connecting head is used to drive the connector 550 to rotate.

[0056] When the above-mentioned tubular structure and the connector device are in use, first, the connector 550 is assembled at the connection head of the output end of the pistol drill 500, and then the connector 550 is placed at the placement groove 2006. Then, the screwing dimension of the screw 2004 is adjusted so that the clamping block 2002 can fix the connector 550. Then, the tubular structure 560 is placed into the fixing groove 3003. It should be noted that in order to prevent slipping during the clamping process, the working surfaces of the placement groove 2006 and the fixing groove 3003 are provided with anti-slip patterns or are made of anti-slip materials; the rotation speed of the pistol drill 500 is stable, which can avoid uneven expansion of the tubular structure 560 during rotation, resulting in uneven extrusion speed of the mandrel 570. The mandrel 570 is externally sleeved with the tubular structure 560, and the two are not fixedly connected. The mandrel 570 can be extruded from the tubular structure 560 under the application of a preset external force, and the mandrel 570 will not be extruded from the tubular structure 560 without applying a preset external force or applying an external force less than the preset external force.

[0057] Specifically, the mandrel 570 is made of a conductive metal material, and the tubular structure 560 is made of a material with strong corrosion resistance. The tubular structure 560 can be a flexible material or a rigid material, as long as it will not be corroded and damaged by tissue fluid after entering the human body and can protect the internal mandrel 570.

[0058] Optionally, waist-shaped long holes 100 are provided at the positions on the base 1 corresponding to the first support platform 2 and / or the second support platform 3, and the first support platform 2 can move relative to the second support platform 3.

[0059] During use, the second support platform 3 can be locked to the base 1 by a nut passing through the waist-shaped long hole 100. During the working process of the hand drill cavity 500, the first support platform 2 will be pushed towards the second support platform 3. The first support platform 2 can be slidably connected to the base 1 by a nut passing through the waist-shaped long hole 100, or a sliding platform is provided on the side of the first support platform 2 close to the waist-shaped long hole 100, and then the sliding platform is slidably connected in the waist-shaped long hole 100. Four waist-shaped long holes 100 are symmetrically arranged and are all parallel to the tubular structure 560.

[0060] Optionally, a clamping portion 200 is provided on the first support platform 2, and a space for clamping the connector 550 is formed between the clamping portion 200 and the first support platform 2.

[0061] During use, the clamping portion is suitable for fastening the connector 550 and driving the first support platform 2 to move translationally. An anti-slip material or anti-slip pattern with a large friction coefficient is provided at the connection between the clamping portion 200 and the connector 550, which can avoid slipping of the connector 550 during rotation.

[0062] Optionally, a threaded hole 2001 is provided at the top of the first support platform 2, and the clamping portion 200 includes:

[0063] The clamping block 2002 is arranged above the first support platform 2, and a plurality of through holes 2003 are arranged thereon;

[0064] The screw 2004 corresponding to the through hole 2003 is connected to the threaded hole 2001;

[0065] The return spring 2005 corresponding to the screw 2004 has two ends respectively abutted against the clamping block 2002 and the screw 2004.

[0066] During use, the connector 550 is placed into the placement groove 2006, and then two screws 2004 are screwed into the threaded holes 2001 on the first support platform 2, so that the screws 2004 penetrate through the return spring 2005 and the through holes 2003 on the clamping block 2002. When the clamping block 2002 contacts the connector 550, the rotation stops. The return spring 2005 can reduce the vibration generated during the rotation of the connector 550, thereby reducing the error of expanding the tubular structure 560. Specifically, an arc-shaped groove can be arranged on the contact surface where the clamping block 2002 contacts the connector 550, and an anti-slip material can be added to the outer wall of the arc-shaped groove, so as to increase the contact area between the clamping block 2002 and the connector 550, and the arc-shaped surface can reduce the occurrence of slipping. The anti-slip material can reduce the wear of the clamping block 2002 during the manufacturing process of the connector 550, thereby increasing the service life of the device.

[0067] In an alternative embodiment, there are two threaded holes 2001, which can be arranged on the left and right sides or the same side of the placement groove 2006, as long as it is ensured that the connector 550 can be placed into the placement groove 2006.

[0068] Optionally, the fixing part 300 includes: a first fixing block 3001 and a second fixing block 3002 which are oppositely arranged, and fixing grooves 3003 are correspondingly arranged on the first fixing block 3001 and the second fixing block 3002;

[0069] A receiving part 301 is arranged on the second support platform 3 in a sunken manner, the fixing part 300 is arranged in the receiving part 301, and a threaded through hole 3011 and a fastening handle 3012 matched with the threaded through hole 3011 are correspondingly arranged on the second support platform 3. The fastening handle 3012 is adapted to rotate relative to the threaded through hole 3011 to make the first fixing block 3001 and the second fixing block 3002 approach each other.

[0070] During use, first adjust the positions of the first fixing block 3001 and the second fixing block 3002 so that the tubular structure 560 is placed into the fixing groove 3003, and then rotate the fastening handle 3012 to make the second fixing block 3002 and the first fixing block 3001 clamp the tubular structure 560. The first fixing block 3001 and the second fixing block 3002 are made of rigid materials, and the surface of the fixing groove 3003 provided thereon is provided with anti-slip lines or an anti-slip layer pasted thereon, which can prevent the tubular structure 560 from being pushed out during the process of pushing out the mandrel 570, thereby improving the yield rate of the expanded tubular structure 560.

[0071] In an alternative embodiment, an air pump may be provided at one end of the second fixing block 3002 facing away from the first fixing block 3001. The output end of the air pump is fixedly connected to the second fixing block 3002, so as to push the second fixing block 3002 closer to the first fixing block 3001. The shapes of the threaded through hole 3011 and the fastening handle 3012 are not specifically limited, as long as the second fixing block 3002 is pushed closer to the first fixing block 3001 and the tubular structure 560 can be clamped.

[0072] Optionally, a step 3013 is provided on the accommodating portion 301, and the step 3013 is provided on the side of the fixing portion 300 away from the first support platform 2.

[0073] Specifically, the step 3013 can prevent the situation that the second fixing block 3002 is extruded and separated from the second support platform 3 during the process of approaching the first fixing block 3001, thereby improving the stability of the device. In an alternative embodiment, a groove may be provided on the side of the second support platform 3 close to the accommodating portion 301, and a sliding table matching the groove is provided on the bottom wall or side wall of the first fixing block 3001 and the second fixing block 3002. The shape of the step 3013 is not limited, as long as it is ensured that the second fixing block 3002 will not slide out of the second support platform 3 when approaching the first fixing block 3001.

[0074] Optionally, a measuring portion 302 is provided on the second support platform 3 for observing the state of the tubular structure 560 relative to the connector 550 inserted therein.

[0075] Optionally, the measuring portion 302 includes:

[0076] A side threaded hole 3021 located on the second support platform 3 and a shoulder screw 3022 corresponding to the side threaded hole 3021; and

[0077] A scale 3023, on which a through hole adapted for the shoulder screw 3022 to pass through is provided.

[0078] Optionally, the measuring unit 302 further includes: a limiting groove 3024, which is provided with a limiting edge, and the limiting edge extends towards the first support platform 2. In an alternative embodiment, a control device and an infrared detection device may be provided at the measuring unit 302. The infrared detection device is adapted to detect the length of the expansion end. The control device is electrically connected to the infrared detection device and the pistol drill 500. When the infrared detection device detects that the expansion length reaches the position of the preset pushing length of the system, the infrared detection device transmits a detection signal so that the control device can turn off the pistol drill 500 and remind the operator that the expansion work has been completed.

[0079] Specifically, there are no restrictions on the installation position and rotation direction of the detection unit 302. When the detection unit 302 is installed on the second support platform 3, the scale 3023 can be rotated counterclockwise to make it parallel to the tubular structure 560. When the detection unit 302 is installed on the first support platform 2, the scale 3023 can be rotated clockwise to make it parallel to the tubular structure 560.

[0080] Optionally, the fixing part 300 includes:

[0081] A connecting hole 3004 provided on the second support platform 3;

[0082] An external thread boss 3005 provided on the inner wall of the connecting hole 3004;

[0083] A chuck 3006 provided at the inner wall position of the external thread boss 3005;

[0084] A locking member 3007, which is provided with an internal thread matching the external thread boss 3005 for rotating and clamping the external thread boss 3005.

[0085] In an alternative embodiment, the fixing part 300 can realize the approach of the second fixing block 3002 to the first fixing block 3001 by providing a through chute inside the chuck 3006 and sliding a sliding rod in the chute. The shapes of the external thread boss 3005, the chuck 3006, and the locking member 3007 are not specifically limited, as long as the second fixing block 3002 is pushed towards the first fixing block 3001.

[0086] Optionally, it further includes a mandrel 570, one end of which is adapted to be connected to the connector 550 and is threaded through the tubular structure 560.

[0087] Specifically, the mandrel 570 is made of a metal material that is easy to conduct electricity and has good ductility. Under the pushing action of the connector 550, the mandrel 570 will be extruded from the tubular structure 550 by a preset length. One end facing away from the connector 550 will be in interference fit with the operating end under the action of the axial force. The interference fit can reduce the probability of detachment between the main body end and the operating end, thereby improving the problems of weak reliability of medical devices applying catheter and wire technologies in the prior art after preparation and posing risks to subsequent treatments.

[0088] The working principle of the above technical solution: Before assembly, one end of the connector 550 is installed at the connection head of the output end of the pistol drill 500, then the connector 550 is placed inside the placement groove 2006, and then the screwing dimension of the screw 2004 is adjusted so that the clamping block 2002 can fix the connector 550. During this process, by setting the return spring 2005, the vibration of the connector 550 during the pushing process can be reduced, thereby reducing the probability of tilting due to vibration. Then, the end of the connector 550 facing away from the pistol drill 500 is brought into contact with the tubular structure 560 so that the tubular structure 560 and the connector 550 are on the same horizontal line. One end of the tubular structure 560 facing away from the connector 550 is placed in the fixing groove 3003, and then by rotating the fastening handle 3012, the locking member 3007 is pushed to rotate, driving the external thread boss 3005 to rotate towards the end close to the second fixing block 3002, so that the second fixing block 3002 and the first fixing block 3001 come into contact to achieve fixation, thereby fixing the tubular structure 560 in the fixing groove 3003, and then rotating the scale 3023 to a position parallel to the tubular structure 560;

[0089] Drive the pistol drill 500 to drive the connector 550 to push towards the end close to the tubular structure 560. During the pushing process, the connector will be nested into one side of the tubular structure 560, and then the mandrel 570 inside the tubular structure 560 is pushed. During the pushing process, the pushed mandrel 570 can be in interference fit with the operating end to achieve assembly. When the pushed length reaches the system preset push length, turn off the pistol drill.

[0090] In an alternative embodiment, the tubular structure is a catheter. Specifically, the central material of the catheter is a mandrel with good electrical conductivity, and the outer wall of the mandrel is wrapped with a corrosion-resistant protective outer tube. One end of the protective outer tube can be expanded to form an expanded end, and then the expanded end is sleeved on the outer wall of the catheter base to improve the assembly strength. Specifically, the catheter base can be clamped in the placement groove 2006, and the catheter can be placed in the fixing groove 3003, so that the output end of the catheter base contacts one end of the catheter and the catheter base and the catheter are arranged in parallel above the base 1. Then, a pistol drill 500 is fixedly connected to the end of the catheter base facing away from the catheter through a three-jaw chuck. The pistol drill 500 is driven and pushed in the direction of the second support platform 3, so that the output end of the catheter base expands one end of the catheter to form a catheter expansion end. During the pushing process, the output end of the catheter base will be embedded in and expand the expansion end of the catheter, thus realizing the assembly.

[0091] Wherein, before expansion, the outer diameter of the output end of the catheter base is larger than the inner diameter of the protective outer tube of the catheter; after expansion, the outer diameter of the output end of the catheter is smaller than the inner diameter of the expanded end of the protective outer tube of the catheter.

[0092] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A tubular structure and connector assembly device, wherein the inner diameter of the end of the connector (550) is greater than the inner diameter of the tubular structure (560), characterized in that, Comprising: Base (1); The first support platform (2) and the second support platform (3) which are arranged adjacent to each other, are arranged on the base (1), and a placement groove (2006) is arranged on one of the first support platform (2) and the second support platform (3); Fixing part (300), arranged on the other one of the first support platform (2) and the second support platform (3), a fixing groove (3003) is formed on the fixing part (300) for realizing the clamping operation on the tubular structure (560); Pistol drill (500), arranged on the side of the first support platform (2) away from the second support platform (3), with a connector at the end, the pistol drill (500) is adapted to drive the connector to rotate and translate close to the first support platform (2), in the assembled state, the axis of the connector is collinear with the axis of the placement groove (2006) and the axis of the fixing groove (3003), and the connector is used to drive the connector (550) to rotate; At the part of the base (1) corresponding to the first support platform (2) and / or the second support platform (3), there is an oblong hole (100), and the first support platform (2) can move relative to the second support platform (3); The fixing part (300) includes: Connection hole (3004) arranged on the second support platform (3); External thread boss (3005), arranged on the inner wall of the connection hole (3004); Collet (3006), arranged at the inner wall position of the external thread boss (3005); Locking piece (3007), which is provided with internal threads matching the external thread boss (3005) for rotating and clamping the external thread boss (3005); It further includes a mandrel (570), one end of which is adapted to be connected to the connector (550) and is arranged on the tubular structure (560).

2. The tubular structure and connector assembly device according to claim 1, characterized in that, A clamping part (200) is arranged on the first support platform (2), and a space for clamping the connector (550) is formed between the clamping part (200) and the first support platform (2).

3. The tubular structure and connector assembly device according to claim 2, characterized in that, A threaded hole (2001) is arranged at the top end of the first support platform (2), and the clamping part (200) includes: Clamping block (2002), arranged above the first support platform (2), and is provided with a plurality of through holes (2003) thereon; Screws (2004) corresponding to the through holes (2003), which are connected to the threaded hole (2001); Return springs (2005) corresponding to the screws (2004), with both ends respectively abutted against the clamping block (2002) and the screws (2004).

4. The tubular structure and connector assembly device according to claim 1, characterized in that, The fixing part (300) includes: a first fixing block (3001) and a second fixing block (3002) which are arranged oppositely, and the fixing grooves (3003) are correspondingly arranged on the first fixing block (3001) and the second fixing block (3002); The second support platform (3) is provided with a recessed accommodation portion (301). The fixing portion (300) is disposed in the accommodation portion (301). The second support platform (3) is correspondingly provided with a threaded through-hole (3011) and a fastening handle (3012) that cooperates with the threaded through-hole (3011). The fastening handle (3012) is adapted to rotate relative to the threaded through-hole (3011) such that the first fixing block (3001) and the second fixing block (3002) approach each other.

5. The tubular structure and connector assembly device according to claim 4, characterized in that, The accommodation portion (301) is provided with a step (3013). The step (3013) is disposed on a side of the fixing portion (300) away from the first support platform (2).

6. The tubular structure and connector assembly device according to claim 1, characterized in that The second support platform (3) is provided with a measuring portion (302) for observing the state of the tubular structure (560) relative to its insertion into the connector (550).

7. The tubular structure and connector assembly device according to claim 6, characterized in that, The measuring portion (302) includes: a side threaded hole (3021) located on the second support platform (3) and a shoulder screw (3022) corresponding to the side threaded hole (3021); and a scale (3023) provided with a through-hole adapted for the shoulder screw (3022) to pass through.

8. The tubular structure and connector assembly device according to claim 7, characterized in that, The measuring portion (302) further includes: a limiting groove (3024) provided with a limiting edge that extends towards the first support platform (2).

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