Automatic production equipment for medical venous catheter

Abstract

The invention relates to the technical field of venous catheters, in particular to medical venous catheter automatic production equipment which comprises an equipment body and a multi-axial adjusting mechanism arranged on the equipment body and further comprises a fixing plate arranged on the multi-axial adjusting mechanism; the movable plate is arranged on the multi-axial adjusting mechanism in a sliding manner; the adjusting part is arranged between the fixed plate and the movable plate and used for adjusting the distance between the movable plate and the fixed plate; the two switching type cutting head mechanisms are arranged on the fixed plate and the movable plate correspondingly, according to the automatic production equipment for the medical venous catheters, when a worker machines the venous catheters, the two catheters can be cut through the arrangement of the adjusting piece, the catheter production efficiency is improved, meanwhile, the labor intensity of workers is lowered, and meanwhile the labor intensity of workers is lowered. By means of the switching type cutting head mechanism, cutting heads of different specifications can be switched according to production requirements, and cutting treatment is conducted on the end portion of the guide pipe after film blowing is completed.

Description

Technical Field

[0001] The invention relates to the technical field of intravenous catheters, in particular to automatic production equipment for medical intravenous catheters. Background Art

[0002] The tube part of the medical catheter is produced by an extrusion molding method. The production process of the catheter is: raw material drying, plasticizing extrusion, mold molding, cooling and shaping, pulling and cutting, and post-processing of the tube, etc. For example, the medical catheter automatic production equipment with announcement number CN210750829U includes a control box, a main frame and a catheter conveying mechanism arranged on the main frame, and also includes a first processing station and a second processing station arranged downstream of the first processing station; wherein the first processing station is configured to perform a head cutting process on the first end of the catheter and a glue coating process on the second end of the catheter at the same time, and the second processing station is configured to perform a punching process on the first end of the catheter and a joint assembly process on the second end of the catheter at the same time.

[0003] However, we found in actual use that when the intravenous catheter is in use, the end of the intravenous catheter inserted into the patient's body is not a completely straight incision. Sometimes, in order to smoothly and accurately insert the intravenous catheter into the target blood vessel, some intravenous catheters with specific incisions are used, such as inclined incisions. When the head cutting mechanism in the above case is used for production, the incision of the intravenous catheter is generally a standard straight incision. In this way, it is necessary to add a trimming mechanism behind the mechanism to assist in the incision processing, which not only increases the floor space of the automatic production equipment, but also due to the problem of shearing direction, the sheared intravenous catheter may fly around, affecting the normal cutting work of the subsequent intravenous catheter. For this reason, we propose an automatic production equipment for medical intravenous catheters. Summary of the invention

[0004] A technical problem to be solved by the present application is: how to design an automatic production device for medical intravenous catheters capable of adjusting the end incision of the intravenous catheter.

[0005] In order to solve the above technical problems, the embodiment of the present application provides an automatic production device for medical intravenous catheters, including a device body and a multi-axial adjustment mechanism arranged on the device body, and also includes:

[0006] A fixing plate, wherein the fixing plate is arranged on the multi-axial adjustment mechanism;

[0007] A movable plate, wherein the movable plate is slidably arranged on the multi-axial adjustment mechanism;

[0008] An adjusting member, which is disposed between the fixed plate and the movable plate and is used to adjust the distance between the movable plate and the fixed plate;

[0009] Two switchable head cutting mechanisms are respectively arranged on a fixed plate and a movable plate, and are used to shear the end of the conduit after the film blowing is completed, and shearing parts of different specifications can be switched according to production requirements.

[0010] In some embodiments, the adjusting member includes a screw rod threadedly connected to the fixed plate, one end of the screw rod is rotatably connected to the movable plate, and the other end of the screw rod is provided with a knob.

[0011] In some embodiments, the switchable head cutting mechanism includes a mounting frame arranged on a fixed plate, and a clamping assembly is arranged on the mounting frame for clamping and positioning the catheter to be cut. A head changing assembly cooperating with the clamping assembly is arranged on the fixed plate for switching shearing parts of different specifications and flattening the catheter to be cut during shearing.

[0012] In some embodiments, the clamping assembly includes two bending clamps that are respectively slidably arranged in the mounting frame, a bidirectional screw rod is rotatably arranged in the mounting frame, the bending clamps are respectively threadedly connected on both sides of the bidirectional screw rod, a first motor is arranged on the fixed plate, one end of the bidirectional screw rod extends to the outside of the mounting frame and is connected to the output end of the first motor, and elastic parts are arranged on the opposite sides of the two bending clamps for squeezing the catheter to be cut.

[0013] In some embodiments, the elastic member includes a spring 1 disposed on a bending clamp, and an extrusion plate is disposed at one end of the spring 1.

[0014] In some embodiments, the head replacement assembly includes a fixed shaft rotatably set on a fixed plate, a rotating part connected to the fixed shaft is set on the equipment body for providing driving force, a contraction part is set on the rotating part, and two shearing knives of different specifications are set on both sides of the contraction part for retracting the shearing knives inward when the rotating part is working, a wedge-shaped top block is set on the bending splint, and two extrusion parts respectively matched with the wedge-shaped top block are set on the equipment body for flattening the catheter to be cut during shearing.

[0015] In some embodiments, the rotating member includes two receiving plates respectively disposed on fixed shafts, a second motor is disposed on the fixed plates, and an output end of the second motor is connected to the receiving plates.

[0016] In some embodiments, shifting grooves are provided on both sides of the two receiving plates, the retracting member includes four springs respectively arranged in the shifting grooves, and U-shaped frames are slidably arranged in the two shifting grooves located on the same side, and the two ends of the U-shaped frames are respectively inserted into the shifting grooves on different receiving plates, and the shearing knives are respectively arranged on the two U-shaped frames.

[0017] In some embodiments, the extrusion member includes two guide columns respectively arranged on a U-shaped frame, and a wedge-shaped top block 2 is slidably arranged on each of the guide columns for use with an adjacent wedge-shaped top block 1. A spring 3 is sleeved on the outer side of each of the guide columns, and the two ends of the spring 3 are respectively connected to the U-shaped frame and the wedge-shaped top block 2, and shear splints that cooperate with the adjacent shearing knives are arranged at both ends of the wedge-shaped top block.

[0018] In some embodiments, the shear clamps at the bottom are all provided with bottom support plates.

[0019] The present invention has at least the following beneficial effects:

[0020] 1. When processing the intravenous catheter, the staff can cut two catheters by setting the adjustment parts, thereby improving the efficiency of catheter production. At the same time, the switchable cutting head mechanism can switch the cutting heads of different specifications according to production needs, and cut the catheter end after the film blowing is completed;

[0021] 2. Efficient shearing: The switchable cutting head mechanism can switch shearing parts of different specifications according to the needs, so as to achieve accurate shearing of the catheter ends of different cutters. The shearing process is automated, which improves production efficiency and ensures the consistency of shearing quality.

[0022] 3. Stable clamping and positioning: The clamping assembly can firmly clamp the catheter to be cut through the design of bidirectional screw rod and bent clamp plate to prevent deviation or sliding during the shearing process. The setting of elastic parts further enhances the stability and reliability of clamping, while reducing damage to the catheter. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 For the present invention Figure 1 Another structural diagram;

[0025] Figure 3 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0026] Figure 4 Another schematic diagram of the cross-sectional structure of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the multi-axial adjustment mechanism and the switchable head cutting mechanism of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the switchable head cutting mechanism of the present invention;

[0029] Figure 7It is a schematic diagram of the structure of a single switchable head cutting mechanism of the present invention;

[0030] Figure 8 It is a schematic diagram of the partial structure explosion of the clamping assembly of the present invention;

[0031] Fig. 9 This is a schematic diagram of the structure of the head changing assembly of the present invention;

[0032] Fig.10 For the present invention Fig. 9 Schematic diagram of some structures;

[0033] Fig.11 It is an exploded schematic diagram of a part of the structure of the head changing mechanism of the present invention;

[0034] Fig.12 This is a schematic diagram of the bottom support plate structure in Example 2 of the present invention.

[0035] In the figure: 1. Equipment body; 2. Adjusting part; 21. Screw; 3. Switching head cutting mechanism; 31. Mounting frame; 4. Clamping assembly; 41. Bending splint; 42. Bidirectional screw; 43. First motor; 5. Elastic part; 51. Spring one; 52. Extrusion plate; 6. Head changing assembly; 61. Fixed shaft; 62. Shearing knife; 63. Wedge-shaped top block one; 7. Rotating part; 71. Receiver plate; 72. Second motor; 8. Contraction part; 81. Shifting slide; 82. Spring two; 83. U-shaped frame; 9. Extrusion part; 91. Guide column; 92. Wedge-shaped top block two; 93. Spring three; 94. Shearing splint; 10. Multi-axial adjustment mechanism; 11. Fixed plate; 12. Movable plate; 13. Bottom support plate. DETAILED DESCRIPTION

[0036] The following will be combined with the 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0037] Example 1

[0038] See also Figure 1-Figure 11 , the present invention provides a technical solution:

[0039] A medical intravenous catheter automatic production equipment includes an equipment body 1 and a multi-axial adjustment mechanism 10 arranged on the equipment body 1. A catheter film blowing mechanism is arranged at the front end of the equipment body 1. A catheter transmission mechanism, a switchable head cutting mechanism 3, a gluing mechanism, a punching mechanism and a joint assembly mechanism are arranged on the equipment body 1. The multi-axial adjustment mechanism 10 is used in conjunction with the switchable head cutting mechanism 3. It mainly drives the screw rod to rotate through a servo motor, thereby completing the X-axis, Y-axis and Z-axis three-directional adjustment of the fixed plate 11 and the movable plate 12. It is an existing common structure and will not be described in detail here. It also includes:

[0040] A fixing plate 11, wherein the fixing plate 11 is arranged on the multi-axial adjustment mechanism 10;

[0041] A movable plate 12, wherein the movable plate 12 is slidably disposed on the multi-axial adjustment mechanism 10;

[0042] An adjusting member 2, wherein the adjusting member 2 is disposed between the fixed plate 11 and the movable plate 12, and is used to adjust the distance between the movable plate 12 and the fixed plate 11;

[0043] Two switchable head cutting mechanisms 3, which are respectively arranged on the fixed plate 11 and the movable plate 12, and are used to shear the end of the conduit after the film blowing is completed, and can switch shearing parts of different specifications according to production requirements;

[0044] The adjusting member 2 comprises a screw rod 21 threadedly connected to the fixed plate 11, one end of the screw rod 21 is rotatably connected to the movable plate 12, and the other end is provided with a knob;

[0045] The switchable head cutting mechanism 3 comprises a mounting frame 31 arranged on the fixed plate 11, the mounting frame 31 is provided with a clamping assembly 4 for clamping and positioning the catheter to be cut, and the fixed plate 11 is provided with a head changing assembly 6 matched with the clamping assembly 4 for switching shearing parts of different specifications and flattening the catheter to be cut during shearing;

[0046] The clamping assembly 4 includes two bending clamps 41 respectively slidably arranged in the mounting frame 31, a bidirectional screw rod 42 is rotatably arranged in the mounting frame 31, the bending clamps 41 are respectively threadedly connected to both sides of the bidirectional screw rod 42, a first motor 43 is arranged on the fixing plate 11, one end of the bidirectional screw rod 42 extends to the outside of the mounting frame 31 and is connected to the output end of the first motor 43, and elastic members 5 are arranged on opposite sides of the two bending clamps 41 for squeezing the catheter to be cut;

[0047] The elastic member 5 comprises a spring 51 arranged on the bending clamp plate 41, and an extrusion plate 52 is arranged at the end of the spring 51;

[0048] The head-changing assembly 6 includes a fixed shaft 61 rotatably arranged on the fixed plate 11, a rotating member 7 connected to the fixed shaft 61 is arranged on the device body 1 for providing driving force, a contraction member 8 is arranged on the rotating member 7, and two shearing knives 62 of different specifications are arranged on both sides of the contraction member 8 for retracting the shearing knives 62 inward when the rotating member 7 is working, and a wedge-shaped top block 63 is arranged on the bending clamp plate 41, and two extrusion members 9 respectively matched with the wedge-shaped top block 63 are arranged on the device body 1 for flattening the catheter to be cut during shearing;

[0049] The rotating member 7 includes two receiving plates 71 respectively arranged on the fixed shaft 61, and the fixed plate 11 is provided with a second motor 72, and the output end of the second motor 72 is connected to the receiving plate 71. When the second motor 72 rotates counterclockwise, the U-shaped frame 83 will directly contact the wedge-shaped top block 1 63, and then be squeezed into the receiving plate 71, and the shearing knife 62 and the second wedge-shaped top block 92 on the U-shaped frame 83 will be retracted, so that the U-shaped frame 83 passes over the wedge-shaped top block 1 63, and then the second motor 72 rotates clockwise, and the second wedge-shaped top block 92 on the U-shaped frame 83 will be attached to the wedge-shaped top block 1 63 and squeezed, and the two shearing clamps 94 are squeezed inward, so as to achieve the flattening of the catheter to be cut;

[0050] Both sides of the two receiving plates 71 are provided with shifting grooves 81, the contraction member 8 includes four springs 82 respectively arranged in the shifting grooves 81, and the two shifting grooves 81 on the same side are both slidably provided with U-shaped frames 83, and the two ends of the U-shaped frames 83 are respectively inserted into the shifting grooves 81 on different receiving plates 71, and the shearing knives 62 are respectively arranged on the two U-shaped frames 83;

[0051] The extrusion member 9 includes two guide columns 91 respectively arranged on the U-shaped frame 83, and a wedge-shaped top block 92 is slidably arranged on the guide columns 91 for use with the adjacent wedge-shaped top block 1 63. A spring 3 93 is sleeved on the outer side of the guide columns 91, and the two ends of the spring 3 93 are respectively connected to the U-shaped frame 83 and the wedge-shaped top block 2 92, and the end of the wedge-shaped top block 2 92 is provided with a shearing clamp 94 that cooperates with the adjacent shearing knife 62.

[0052] When in use, the catheter film blowing mechanism first works to blow out a venous catheter, and then the catheter is transported to the multi-axial adjustment mechanism 10 through the catheter conveying mechanism. The multi-axial adjustment mechanism 10 drives the screw to rotate through the servo motor to achieve precise adjustment of the fixed plate 11 and the movable plate 12 in the three directions of the X-axis, Y-axis and Z-axis. This adjustment can ensure that the device can adapt to catheters of different specifications and sizes;

[0053] The work of the head changing assembly 6 is controlled according to the demand. The second motor 72 in the rotating member 7 provides driving force, which rotates counterclockwise at this time, driving the receiving plate 71 and the U-shaped frame 83 to rotate around the fixed shaft 61. When contacting the wedge-shaped top block 1 63, the U-shaped frame 83 slides in the shifting slot 81. During the sliding process, the shearing knife 62 and the wedge-shaped top block 2 92 on the U-shaped frame 83 will be retracted so as to pass over the wedge-shaped top block 1 63, thereby realizing the switching of the shearing knife 62 and the shearing clamp 94;

[0054] After the adjustment is completed, the two switching head cutting mechanisms 3 start to work. The two mechanisms are respectively arranged on the fixed plate 11 and the movable plate 12, and can cut two catheters to improve the efficiency of catheter production. The clamping assembly 4 in the switching head cutting mechanism 3 stably clamps the catheter to be cut through the bidirectional screw rod 42 and the bending clamp plate 41. The spring 1 51 and the extrusion plate 52 in the elastic member 5 on the bending clamp plate 41 ensure that the catheter will not be damaged during the clamping process, and provide sufficient clamping force;

[0055] The second motor 72 in the rotating member 7 provides driving force, and rotates clockwise at the beginning. The second wedge-shaped top block 92 on the U-shaped frame 83 is attached to and squeezed with the first wedge-shaped top block 63, and the two shearing clamps 94 are squeezed inward, so as to flatten the catheter to be cut. The shearing knife 62 starts to work and shears the catheter. Due to the setting of the clamping assembly 4, the catheter will not fly around. Then, the second motor 72 changes the rotation direction to release the squeezed catheter. After the catheter is re-delivered, it rotates clockwise again to complete a new round of flattening and shearing work, and the above work can be repeated;

[0056] After the shearing is completed, the clamping assembly 4 releases the clamped catheter, and the catheter continues to be transported to the next process (such as the gluing mechanism, the punching mechanism and the joint assembly mechanism) through the catheter conveying mechanism for further processing;

[0057] During the whole process, the coordinated use of the multi-axial adjustment mechanism 10 and the switchable head cutting mechanism 3 ensures the adaptability and production efficiency of the equipment to catheters of different specifications. At the same time, the design of the clamping assembly 4 and the head changing assembly 6 improves the clamping stability and shearing quality of the catheter.

[0058] Example 2

[0059] See also Fig.12 , the present invention provides a technical solution:

[0060] Different from Example 1, the shearing clamp 94 at the bottom is provided with a bottom support plate 13. The provision of the bottom support plate 13 ensures that the incision is straight during shearing, avoids pulling deformation, and is conducive to improving the shearing effect at the incision position.

[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0062] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. An automatic production device for medical intravenous catheters, comprising a device body (1) and a multi-axial adjustment mechanism (10) arranged on the device body (1), characterized in that: Also included are: A fixing plate (11), wherein the fixing plate (11) is arranged on the multi-axial adjustment mechanism (10); A movable plate (12), wherein the movable plate (12) is slidably arranged on the multi-axial adjustment mechanism (10); An adjusting member (2), the adjusting member (2) being arranged between the fixed plate (11) and the movable plate (12) and being used for adjusting the distance between the movable plate (12) and the fixed plate (11); Two switchable head cutting mechanisms (3) are respectively arranged on a fixed plate (11) and a movable plate (12) and are used to perform shearing processing on the end of the conduit after the film blowing is completed, and shearing parts of different specifications can be switched according to production requirements.

2. The automatic production equipment for medical intravenous catheters according to claim 1 is characterized in that: The adjusting member (2) comprises a screw rod (21) threadedly connected to the fixed plate (11); one end of the screw rod (21) is rotatably connected to the movable plate (12), and the other end is provided with a knob.

3. The automatic production equipment for medical intravenous catheters according to claim 1 is characterized in that: The switchable head cutting mechanism (3) comprises a mounting frame (31) arranged on a fixed plate (11); a clamping assembly (4) is arranged on the mounting frame (31) for clamping and positioning the catheter to be cut; and a head changing assembly (6) matched with the clamping assembly (4) is arranged on the fixed plate (11) for switching shearing parts of different specifications and flattening the catheter to be cut during shearing.

4. The automatic production equipment for medical intravenous catheters according to claim 3 is characterized in that: The clamping assembly (4) comprises two bending clamps (41) which are respectively slidably arranged in the mounting frame (31); a bidirectional screw rod (42) is rotatably arranged in the mounting frame (31); the bending clamps (41) are respectively threadedly connected to the two sides of the bidirectional screw rod (42); a first motor (43) is arranged on the fixing plate (11); one end of the bidirectional screw rod (42) extends to the outside of the mounting frame (31) and is connected to the output end of the first motor (43); elastic members (5) are arranged on opposite sides of the two bending clamps (41) for squeezing the catheter to be cut.

5. The automatic production equipment for medical intravenous catheters according to claim 4 is characterized in that: The elastic member (5) comprises a spring one (51) arranged on the bending clamping plate (41), and a pressing plate (52) is arranged at the end of the spring one (51).

6. The automatic production equipment for medical intravenous catheters according to claim 4, characterized in that: The head changing assembly (6) comprises a fixed shaft (61) rotatably arranged on a fixed plate (11); a rotating member (7) connected to the fixed shaft (61) is arranged on the device body (1) for providing a driving force; a contraction member (8) is arranged on the rotating member (7); two shearing knives (62) of different specifications are arranged on both sides of the contraction member (8) for retracting the shearing knives (62) inward when the rotating member (7) is working; a wedge-shaped top block (63) is arranged on the bending clamp (41); and two extrusion members (9) respectively matched with the wedge-shaped top block (63) are arranged on the device body (1) for flattening the catheter to be cut during shearing.

7. The automatic production equipment for medical intravenous catheters according to claim 6, characterized in that: The rotating member (7) comprises two receiving plates (71) respectively arranged on the fixed shaft (61); a second motor (72) is arranged on the fixed plate (11); and an output end of the second motor (72) is connected to the receiving plate (71).

8. The automatic production equipment for medical intravenous catheters according to claim 7, characterized in that: Both sides of the two receiving plates (71) are provided with shifting grooves (81), the contraction member (8) comprises four springs (82) respectively arranged in the shifting grooves (81), and U-shaped frames (83) are slidably arranged in the two shifting grooves (81) located on the same side, and the two ends of the U-shaped frame (83) are respectively inserted into the shifting grooves (81) on different receiving plates (71), and the shearing knives (62) are respectively arranged on the two U-shaped frames (83).

9. The automatic production equipment for medical intravenous catheters according to claim 8, characterized in that: The extrusion member (9) comprises two guide posts (91) respectively arranged on the U-shaped frame (83), and a wedge-shaped top block (92) matched with an adjacent wedge-shaped top block (63) is slidably arranged on the guide posts (91), and a spring (93) is sleeved on the outer side of the guide posts (91), and the two ends of the spring (93) are respectively connected to the U-shaped frame (83) and the wedge-shaped top block (92), and a shearing clamp (94) matched with an adjacent shearing knife (62) is arranged at the end of the wedge-shaped top block (92).

10. The automatic production equipment for medical intravenous catheters according to claim 9, characterized in that: The shearing clamps (94) at the bottom are all provided with bottom support plates (13).

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