Needle threading auxiliary mechanism of indwelling needle safety clamp

Abstract

The invention provides an indwelling needle safety clamp needle threading auxiliary mechanism which comprises a base, a needle base fixing assembly, a first double-shaft positioning assembly and a needle threading assembly, a second double-shaft positioning assembly is arranged at the top of the base, and the output end of the second double-shaft positioning assembly is fixedly connected with a first pneumatic clamping jaw; needle guiding frames are fixed to the two movable ends of the first pneumatic clamping jaw correspondingly, a needle guiding base is arranged between the two needle guiding frames and detachably installed between the two needle guiding frames through a first double-shaft positioning assembly, and needle guiding holes allowing indwelling needle heads to penetrate through are formed in the needle guiding frames and the needle guiding base correspondingly; an elastic sheet is further arranged in the needle guiding seat, and one end of the elastic sheet is fixedly connected with the interior of the needle guiding seat; according to the remaining needle fixing device, one end of the elastic piece gradually moves downwards and is attached to the surface of the remaining needle head, the remaining needle head is assisted to be fixed, and the situation that the assembly effect is affected due to excessive movement of the remaining needle head is avoided.

Description

Technical Field

[0001] The present invention belongs to the field of indwelling needle assembly equipment, and more specifically, relates to an indwelling needle safety clip needle threading auxiliary mechanism. Background Art

[0002] In the modern medical industry, indwelling needles are a commonly used medical device, mainly used for long-term infusion or drug injection. Traditionally, the assembly of indwelling needles mostly relies on manual operation, which not only results in high labor costs, but also low assembly efficiency and accuracy. With the development of technology, fully automated indwelling needle assembly production lines have emerged, which can significantly improve production efficiency and product quality.

[0003] The structure of an indwelling needle includes a catheter hub and a catheter. Among them, an assembly hole is provided on the abutting surface of the catheter hub. The catheter includes a butt joint portion, a mating portion, and a liquid guiding portion connected in sequence. The outer diameter of the mating portion is larger than the aperture of the assembly hole. Before pressing, the liquid guiding portion is passed through the assembly hole on the catheter hub. At this time, there is still a certain gap between the mating portion and the abutting surface. During pressing, the catheter hub is fixed, and the butt joint portion is pushed towards the abutting surface, so that the mating portion extends into the assembly hole until the butt joint portion abuts against the abutting surface, then the assembly of the catheter and the catheter hub can be completed. However, this manual assembly process is difficult, and a relatively large force is required to firmly press the interference fit portion of the catheter and the catheter hub. Therefore, this manual assembly method is prone to the situation of insufficient pressing, cannot guarantee the assembly quality, and has low assembly efficiency. Summary of the Invention

[0004] Aiming at the above problems existing in the prior art, the purpose of the present invention is to provide an indwelling needle safety clip needle threading auxiliary mechanism, which can achieve accurate and rapid indwelling needle threading operations, and avoid the influence of excessive movement of the indwelling needle tip on the installation effect.

[0005] In order to solve the above problems, the technical solutions adopted by the present invention are as follows: The indwelling needle safety clip needle threading auxiliary mechanism provided by the present invention includes a base, a needle hub fixing component, a first double-axis positioning component, and a needle threading component. The first double-axis positioning component is located on one side of the base, the needle threading component is located on the top of the base, a second double-axis positioning component is provided on the top of the base, and the output end of the second double-axis positioning component is fixedly connected to a first pneumatic gripper. Needle guiding frames are fixed to both movable ends of the first pneumatic gripper. A needle guiding seat is provided between the two needle guiding frames. The needle guiding seat is detachably installed between the two needle guiding frames through the first double-axis positioning component. Needle guiding holes for the indwelling needle tip to pass through are provided inside the needle guiding frames and the needle guiding seat; An elastic sheet is further provided inside the needle guiding seat. One end of the elastic sheet is fixedly connected to the inside of the needle guiding seat, and the other end of the elastic sheet bends inward and has elasticity; One side of the needle guiding seat is also penetrated by a driving rod, and one end of the driving rod has a right-angled triangular cross-section, and one end of the driving rod penetrates through the inner side of the elastic sheet.

[0006] Further, the first biaxial positioning assembly includes a support frame, a back plate, a first sliding seat, a first telescopic electric cylinder, a second telescopic electric cylinder, and a second sliding seat. The back plate is fixedly installed at the top of the support frame. A first slide rail for the first sliding seat to slide horizontally is installed on the opposite side of the back plate. The first telescopic electric cylinder is fixedly installed at one end of the back plate, and the output end of the first telescopic electric cylinder is fixedly connected to one end of the first sliding seat. A second slide rail for the second sliding seat to slide vertically is installed on the opposite side of the first sliding seat. The second telescopic electric cylinder is fixedly installed at the top of the first sliding seat, and the output end of the second telescopic electric cylinder is fixedly connected to one end of the second sliding seat.

[0007] Further, the second biaxial positioning assembly includes a support plate, a third sliding seat, a third telescopic electric cylinder, a fourth telescopic electric cylinder, and a fourth sliding seat. The support plate is fixedly installed at the top of the base. A third slide rail for the third sliding seat to slide horizontally is installed on the top of the support plate. The third telescopic electric cylinder is fixedly installed at one end of the support plate, and the output end of the third telescopic electric cylinder is fixedly connected to one end of the third sliding seat. A fourth slide rail for the fourth sliding seat to slide vertically is provided on the top of the third sliding seat. The fourth telescopic electric cylinder is fixedly installed on the top of the third sliding seat, and one end of the fourth telescopic electric cylinder is fixedly connected to one end of the fourth sliding seat.

[0008] Further, the needle seat fixing assembly includes a mounting frame, a fifth telescopic electric cylinder, a fifth sliding seat, and a third pneumatic gripper. The mounting frame is fixedly installed on one side of the base. A fifth slide rail for the fifth sliding seat to slide vertically is installed on one side of the mounting frame. The fifth telescopic electric cylinder is fixedly installed on the fifth slide rail on one side of the mounting frame, and one end of the fifth telescopic electric cylinder is fixedly connected to one end of the fifth sliding seat. The third pneumatic gripper is fixedly installed on one side of the fifth sliding seat.

[0009] Further, a through groove for the output end of the second pneumatic gripper to penetrate is opened at the top of the needle guiding frame, and the horizontal dimension of the through groove is larger than the width dimension of the needle guiding seat.

[0010] Further, the needle threading assembly includes a fixing frame, a fixing seat, a movable rod, and a mounting seat. The fixing frame is fixedly installed on the top of the support plate. The fixing seat and the mounting seat are respectively fixedly installed at both ends of the top of the fixing frame. One end of the movable rod is slidably installed inside the fixing seat, and an elastic member for resetting the movable rod is provided inside the mounting seat.

[0011] Further, a groove for the indwelling needle to penetrate is formed at one end of the movable rod, and the depth of the groove is less than the length of the indwelling needle.

[0012] Further, the elastic member is a compression spring, and both ends of the compression spring are fixedly connected to the inner side wall of the mounting seat and one end of the movable rod respectively.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention completes the positioning of the indwelling needle, the needle seat, the first pneumatic gripper and the second pneumatic gripper through the first biaxial positioning assembly, the second biaxial positioning assembly and the needle-passing assembly. By pushing the driving rod, the right-angled inclined surface of the driving rod squeezes the elastic piece. At this time, one end of the elastic piece gradually lifts with the extrusion of the driving rod. At this time, the indwelling needle can pass through. After the indwelling needle passes through the needle guiding hole, the driving rod can be retracted so that the right-angled inclined surface of the driving rod disengages from the elastic piece. At this time, one end of the elastic piece gradually moves down and fits on the surface of the indwelling needle head to assist in fixing the indwelling needle head and prevent the indwelling needle head from being too movable and affecting the assembly effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the indwelling needle safety clip needle-passing auxiliary mechanism of the present invention; Figure 2 is a schematic diagram of the structure of the first biaxial positioning assembly and the needle-passing assembly of the present invention; Figure 3 is a schematic diagram of the overall structure of the second biaxial positioning assembly of the present invention; Figure 4 is a sectional structure schematic diagram of the second biaxial positioning assembly of the present invention; Figure 5 is a schematic diagram of the structure of the needle guiding frame and the needle guiding seat of the present invention.

[0015] Reference numerals in the drawings: 1 - base; 2 - first pneumatic gripper; 3 - needle guiding frame; 4 - needle guiding seat; 5 - needle guiding hole; 6 - elastic piece; 7 - driving rod; 8 - support frame; 9 - back plate; 10 - first sliding seat; 11 - first telescopic electric cylinder; 12 - second telescopic electric cylinder; 13 - second sliding seat; 14 - second pneumatic gripper; 15 - support plate; 16 - third sliding seat; 17 - third telescopic electric cylinder; 18 - fourth telescopic electric cylinder; 19 - fourth sliding seat; 20 - mounting frame; 21 - fifth telescopic electric cylinder; 22 - fifth sliding seat; 23 - third pneumatic gripper; 24 - through groove; 25 - fixing frame; 26 - fixing seat; 27 - movable rod; 28 - mounting seat; 29 - compression spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The present invention will be further described below in conjunction with specific embodiments.

[0017] AsFigures 1 - 5 As shown in the figure, the puncture needle auxiliary mechanism of the indwelling needle safety clip of the present invention includes a base 1, a needle seat fixing component, a support frame 8, a back plate 9, a first sliding seat 10, a first telescopic electric cylinder 11, a second telescopic electric cylinder 12, a second sliding seat 13, and a puncture needle component. The back plate 9 is fixedly installed at the top of the support frame 8. A slide rail for the horizontal sliding of the first sliding seat 10 is installed on the opposite side of the back plate 9. The first telescopic electric cylinder 11 is fixedly installed at one end of the back plate 9, and the output end of the first telescopic electric cylinder 11 is fixedly connected to one end of the first sliding seat 10. A slide rail for the vertical sliding of the second sliding seat 13 is installed on the opposite side of the first sliding seat 10. The second telescopic electric cylinder 12 is fixedly installed at the top of the first sliding seat 10, and the output end of the second telescopic electric cylinder 12 is fixedly connected to one end of the second sliding seat 13. A second pneumatic gripper 14 is also provided on one side of the second sliding seat 13; The puncture needle component is located on the top of the base 1. A second double-axis positioning component is provided on the top of the base 1, and the output end of the second double-axis positioning component is fixedly connected to a first pneumatic gripper 2. Needle guiding frames 3 are fixed to both movable ends of the first pneumatic gripper 2. A needle guiding seat 4 is provided between the two needle guiding frames 3. The needle guiding seat 4 is detachably installed between the two needle guiding frames 3 through the second pneumatic gripper. A through groove 24 for the penetration of the output end of the second pneumatic gripper 14 is opened at the top of the needle guiding frame 3. The horizontal dimension of the through groove 24 is larger than the width dimension of the needle guiding seat 4. By clamping the needle guiding seat 4 with the second pneumatic gripper 14 and opening the two needle guiding frames 3 with the first pneumatic gripper, the needle guiding seat 4 is exposed outside at this time. By starting the first telescopic electric cylinder 11 to drive the first sliding seat 10 to slide horizontally along the back plate 9, and then driving the second sliding seat 13 to slide vertically along the first sliding seat 10 through the second telescopic electric cylinder 12, it is convenient to adjust the position of the second pneumatic gripper 14, so that the second pneumatic gripper drives the needle guiding seat 4 to move, completing the installation or disassembly work of the needle guiding seat 4. Needle guiding holes 5 for the indwelling needle head to pass through are opened inside both the needle guiding frame 3 and the needle guiding seat 4; An elastic sheet 6 is further provided inside the needle guiding seat 4. One end of the elastic sheet 6 is fixedly connected to the inside of the needle guiding seat 4, and the other end of the elastic sheet 6 bends inward and has elasticity. A driving rod 7 is also inserted through one side of the needle guiding seat. One end of the driving rod 7 has a right-angled triangular cross-section, and one end of the driving rod 7 passes through the inside of the elastic sheet 6 horizontally; It should be noted that the driving rod 7 is pneumatically or electrically driven, such as a telescopic electric cylinder or a telescopic air cylinder. By pushing the driving rod 7, its right-angled inclined surface squeezes the elastic sheet 6. At this time, one end of the elastic sheet 6 gradually lifts with the extrusion of the driving rod 7, and at this time the indwelling needle can pass through. After the indwelling needle passes through the needle guiding hole 5, the driving rod 7 can be retracted so that its right-angled inclined surface disengages from the elastic sheet 6. At this time, one end of the elastic sheet 6 gradually moves down and fits on the surface of the indwelling needle head, assisting in fixing the indwelling needle head and preventing the indwelling needle head from being too movable and affecting the assembly effect.

[0018] In a specific implementation process, the second dual-axis positioning component includes a support plate 15, a third sliding seat 16, a third telescopic electric cylinder 17, a fourth telescopic electric cylinder 18, and a fourth sliding seat 19. The support plate 15 is fixedly installed on the top of the base 1. A slide rail for the lateral sliding of the third sliding seat 16 is installed on the top of the support plate 15. The third telescopic electric cylinder 17 is fixedly installed at one end of the support plate 15, and the output end of the third telescopic electric cylinder 17 is fixedly connected to one end of the third sliding seat 16. A slide rail for the vertical sliding of the fourth sliding seat 19 is provided on the top of the third sliding seat 16. The fourth telescopic electric cylinder 18 is fixedly installed on the top of the third sliding seat 16, and one end of the fourth telescopic electric cylinder 18 is fixedly connected to one end of the fourth sliding seat 19. By starting the third telescopic electric cylinder 17 to drive the third sliding seat 16 to slide laterally along the support plate 15, and then driving the fourth sliding seat 19 to slide vertically along the third sliding seat 16 through the fourth telescopic electric cylinder 18, it is convenient to adjust the position of the first pneumatic gripper 2.

[0019] It should be noted that the needle seat fixing component includes a mounting frame 20, a fifth telescopic electric cylinder 21, a fifth sliding seat 22, and a third pneumatic gripper 23. The mounting frame 20 is fixedly installed on one side of the base 1. A slide rail for the perpendicular sliding of the fifth sliding seat 22 is installed on one side of the mounting frame 20. The fifth telescopic electric cylinder 21 is fixedly installed on the slide rail on one side of the mounting frame 20, and one end of the fifth telescopic electric cylinder 21 is fixedly connected to one end of the fifth sliding seat 22. The third pneumatic gripper 23 is fixedly installed on one side of the fifth sliding seat 22. By starting the fifth telescopic electric cylinder 21 to drive the fifth sliding seat 22 to slide perpendicularly along the slide rail on the mounting frame 20, it is convenient to adjust the perpendicular distance of the third pneumatic gripper 23, and the needle seat is clamped by the third pneumatic gripper 23.

[0020] Furthermore, the needle threading component includes a fixing frame 25, a fixing seat 26, a movable rod 27, and a mounting seat 28. The fixing frame 25 is fixedly installed on the top of the support plate 15. The fixing seat 26 and the mounting seat 28 are respectively fixedly installed at both ends of the top of the fixing frame 25. One end of the movable rod 27 is slidably installed inside the fixing seat 26, and a groove for the insertion of the indwelling needle is formed at one end of the movable rod 27. An elastic member for the reset of the movable rod 27 is provided inside the mounting seat 28. One end of the indwelling needle is inserted into the groove at one end of the movable rod 27, and the needle threading component is moved to drive the indwelling needle to pass through the needle guiding frame 3 and the needle guiding seat 4. It should be noted that the elastic member is a compression spring 29. Both ends of the compression spring 29 are fixedly connected to the inner side wall of the mounting seat 28 and one end of the movable rod 27 respectively. After the assembly of the indwelling needle is completed, the movable rod 27 is driven to reset by the resilience of the compression spring 29, and the work of separating the indwelling needle from the movable rod 27 is completed.

[0021] The working principle of the present invention is as follows: By starting the fifth telescopic cylinder 21 to drive the fifth sliding seat 22 to slide vertically along the slide rail on the mounting frame 20, it is convenient to adjust the vertical distance of the third pneumatic gripper 23. The third pneumatic gripper 23 is used to grip the needle seat, insert one end of the indwelling needle into the groove at one end of the movable rod 27, and move the needle-piercing assembly to drive the indwelling needle through the needle guiding frame 3 and the needle guiding seat 4, and insert one end of the indwelling needle into the needle seat to complete the assembly work of the indwelling needle. After the assembly of the indwelling needle is completed, the movable rod 27 is driven to reset by the resilience of the compression spring 29 to complete the separation work of the indwelling needle and the movable rod 27. The second pneumatic gripper 14 is used to grip the needle guiding seat 4, and the first gripper is started to open the two needle guiding frames 3. At this time, the needle guiding seat 4 is exposed outside. By starting the first telescopic cylinder 11 to drive the first sliding seat 10 to slide horizontally along the back plate 9, and then driving the second sliding seat 13 to slide vertically along the first sliding seat 10 by the second telescopic cylinder 12, it is convenient to adjust the position of the second pneumatic gripper 14, so that the second gripper is started to drive the needle guiding seat 4 to move to complete the installation or disassembly work of the needle guiding seat 4..

Claims

1. A puncture assistance mechanism for a safety clip of an indwelling needle, characterized in that, The mechanism includes a base, a needle seat fixing component, a first double-axis positioning component, and a needle threading component. The first double-axis positioning component is located on one side of the base, and the needle threading component is located on the top of the base. A second double-axis positioning component is also provided on the top of the base, and the output end of the second double-axis positioning component is fixedly connected to a first pneumatic gripper. The first pneumatic gripper includes two movable ends, and a needle guiding frame is fixedly connected to each of the two movable ends. A needle guiding seat is connected between the two needle guiding frames. The needle guiding seat is detachably installed between the two needle guiding frames through the first double-axis positioning component. Needle guiding holes for the indwelling needle to pass through are provided inside both the needle guiding frame and the needle guiding seat. An elastic sheet is further provided inside the needle guiding seat. One end of the elastic sheet is fixedly connected to the inside of the needle guiding seat, and the other end of the elastic sheet bends inward and has elasticity. A driving rod is also inserted through one side of the needle guiding seat. One end of the driving rod has a right-angled triangle cross-section, and one end of the driving rod passes through the inside of the elastic sheet.

2. The indwelling needle safety clip needle-piercing auxiliary mechanism according to claim 1, wherein, The first double-axis positioning component includes a support frame, a back plate, a first sliding seat, a first telescopic electric cylinder, a second telescopic electric cylinder, and a second sliding seat. The back plate is fixedly installed at the top of the support frame. A first slide rail for the first sliding seat to slide horizontally is installed on the front side of the back plate. The first telescopic electric cylinder is fixedly installed at one end of the back plate, and the output end of the first telescopic electric cylinder is fixedly connected to one end of the first sliding seat. A second slide rail for the second sliding seat to slide vertically is installed on the front side of the first sliding seat. The second telescopic electric cylinder is fixedly installed at the top of the first sliding seat, and the output end of the second telescopic electric cylinder is fixedly connected to one end of the second sliding seat.

3. The indwelling needle safety clip needle-piercing auxiliary mechanism according to claim 1, wherein The second double-axis positioning component includes a support plate, a third sliding seat, a third telescopic electric cylinder, a fourth telescopic electric cylinder, and a fourth sliding seat. The support plate is fixedly installed on the top of the base. A third slide rail for the third sliding seat to slide horizontally is installed on the top of the support plate. The third telescopic electric cylinder is fixedly installed at one end of the support plate, and the output end of the third telescopic electric cylinder is fixedly connected to one end of the third sliding seat. A fourth slide rail for the fourth sliding seat to slide vertically is provided on the top of the third sliding seat. The fourth telescopic electric cylinder is fixedly installed on the top of the third sliding seat, and one end of the fourth telescopic electric cylinder is fixedly connected to one end of the fourth sliding seat.

4. The puncture assistance mechanism for the indwelling needle safety clip according to claim 1, wherein, The needle seat fixing component includes a mounting frame, a fifth telescopic electric cylinder, a fifth sliding seat, and a third pneumatic gripper. The mounting frame is fixedly installed on one side of the base. A fifth slide rail for the fifth sliding seat to slide vertically is installed on one side of the mounting frame. The fifth telescopic electric cylinder is fixedly installed on the fifth slide rail on one side of the mounting frame, and one end of the fifth telescopic electric cylinder is fixedly connected to one end of the fifth sliding seat. The third pneumatic gripper is fixedly installed on one side of the fifth sliding seat.

5. The needle-piercing assisting mechanism of the indwelling needle safety clip according to claim 2, wherein A second pneumatic gripper is also provided on one side of the second sliding seat.

6. The needle-piercing assisting mechanism of the indwelling needle safety clip according to claim 5, characterized in that, A through groove for the output end of the second pneumatic gripper to penetrate is provided at the top of the needle guiding frame.

7. The puncture assisting mechanism for the indwelling needle safety clip according to claim 6, characterized in that, The lateral dimension of the through groove is greater than the width dimension of the lead pin base.

8. The puncture assistance mechanism of the safety clip for the indwelling needle according to claim 1, wherein, The needle threading assembly includes a fixing frame, a fixing base, a movable rod, and a mounting base. The fixing frame is fixedly installed on the top of the support plate. The fixing base and the mounting base are respectively fixedly installed at both ends of the top of the fixing frame. One end of the movable rod is slidably installed inside the fixing base. The movable rod is used for fixedly retaining the needle head. An elastic member for resetting the movable rod is provided inside the mounting base.

9. The puncture assistance mechanism for the safety clip of the indwelling needle according to claim 8, characterized in that, A groove for the needle head to penetrate is formed at one end of the movable rod, and the depth of the groove is less than the length of the needle head.

10. The indwelling needle safety clip needle-piercing auxiliary mechanism according to claim 8, characterized in that, The elastic member is a compression spring, and both ends of the compression spring are fixedly connected to the inner side wall of the mounting base and one end of the movable rod respectively.

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