An intelligent needle changing system and its control method based on an automated blood collection machine

Abstract

This invention discloses an intelligent needle changing system based on an automatic blood collection machine, comprising: a base plate; a blood collection tube holder, which is annular and rotatably supported on the base plate, wherein the blood collection tubes are arranged in a circumferential array and placed on the blood collection tube holder; a turntable, which is elastically supported on the base plate and rotatably fitted inside the blood collection tube holder, capable of clamping a return needle and sliding along the axial direction of the blood collection tube holder, allowing the return needle to be inserted into or removed from the blood collection tube; and a pressing mechanism disposed on the top of the turntable, capable of engaging with the turntable to drive the turntable to rotate and push the turntable to slide along the axial direction of the blood collection tube holder. This invention also discloses a control method for the intelligent needle changing system based on an automatic blood collection machine.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and in particular to an intelligent needle changing system based on an automated blood collection machine and its control method. Background Technology

[0002] During manual blood draws, if a vein is not found or the needle is inserted too deeply, it often causes pain for the patient. However, most hospitals currently use manual blood draws, and the experience is largely dependent on the skill of the medical staff. Furthermore, manual blood draws are cumbersome and inefficient. Therefore, with the development of science and technology, medical devices are becoming increasingly intelligent, and products using robots to replace manual blood draws have appeared on the market. These blood collection robots utilize infrared and ultrasound imaging technology to replace nurses in administering injections and drawing blood. Although they currently boast an 83% accuracy rate, the entire process still requires manual control. Each needle change still cannot avoid the problem of secondary needle injury and infection inherent in manual blood draws. Moreover, the needle-changing and blood-drawing process cannot be fully automated, resulting in overall low efficiency and failing to fundamentally solve the problems associated with manual blood draws.

[0003] Patent application number 201810439539.5 discloses an automatic needle-changing robot that can automatically complete the process of changing needles, drawing blood, sealing needles, and removing needles, thus completing the process of changing the reflux needle. Although it avoids the need for manual replacement of the reflux needle, it cannot automatically change the connection between the reflux needle and the blood collection tube, which is not conducive to the process of collecting blood from multiple blood collection tubes in one puncture.

[0004] Patent application number 201620901679.6 discloses an automatic needle changing device for continuous infusion of infusion bottles. Multiple infusion bottles are placed on a rotating support, and the needle is changed by rotating the turntable. However, the infusion bottles are heavy and are prone to shaking during rotation. In actual operation, the needle may not be able to be aligned with the infusion bottle, which has poor application prospects. Summary of the Invention

[0005] This invention provides an intelligent needle changing system based on an automated blood collection machine, which has a rotatable blood collection tube holder and a rotatable reflux needle turntable. The relative positions of the reflux needle holder and the turntable can be changed by rotation to achieve the matching of the reflux needle with any blood collection tube without manual operation, thus realizing automated needle changing in the blood collection process.

[0006] This invention also provides a control method for an intelligent needle changing system based on an automatic blood collection machine, which provides a method for the rotation and coordination of the reflux needle holder and the turntable, enabling precise coordination between the blood collection tube and the reflux needle, effectively controlling the needle changing time, ensuring a smooth blood collection and needle changing process, and improving blood collection efficiency.

[0007] An intelligent needle changing system based on an automated blood collection machine includes:

[0008] Blood collection needles, which include a reflux needle and a puncture needle connected by a catheter;

[0009] Base plate;

[0010] The blood collection tube holder is ring-shaped and rotatably supported on the base plate, and the blood collection tubes are arranged in a circumferential array and fixed on the blood collection tube holder;

[0011] The turntable, which is elastically supported on the base plate and can be rotatably fitted inside the blood collection tube holder, can hold the reflux needle and can slide along the axial direction of the blood collection tube holder, so that the reflux needle can be inserted into or pulled out of the blood collection tube.

[0012] A pressing mechanism is disposed on the top of the turntable, which can be engaged with the turntable to drive the turntable to rotate and push the turntable to slide along the axial direction of the blood collection tube holder.

[0013] Preferably, the blood collection tube holder includes:

[0014] The base has multiple arrayed grooves on its surface to accommodate blood collection tubes;

[0015] The ring frame is ring-shaped and integrally connected to the top of the base;

[0016] Multiple annular fins are arranged in an array on the ring frame and have arrayed notches to help fix the blood collection tube.

[0017] Preferably, the turntable includes:

[0018] Rotating column;

[0019] Multiple clamping parts are arranged in an array on the top of the rotating column.

[0020] Preferably, each of the clamping portions includes:

[0021] The return needle clamping groove is an "n" shaped notch;

[0022] A drive notch is provided on the outer edge of the clamping part and located on one side of the return needle clamping groove.

[0023] Preferably, the pressing mechanism includes:

[0024] A longitudinal telescopic frame, which is supported on one side of the base plate and located at one end of the turntable, can extend and retract along the height direction of the base plate;

[0025] A drive disc, which is rotatably supported on the longitudinal telescopic frame, has a columnar protrusion at the other end;

[0026] The columnar protrusion can extend into the drive notch to drive the drive disk to rotate, and through the longitudinal telescopic frame, the turntable slides along the axial direction of the blood collection tube fixing frame.

[0027] Preferably, it also includes a drive motor, which is disposed at one end of the blood collection tube holder and is capable of driving the blood collection tube holder to rotate.

[0028] A control method based on an automatic reflux needle intelligent needle changing system includes:

[0029] The multiple fixing notches arranged in an array on the blood collection tube holder are marked clockwise as n. i =1,2…i…N; and according to the fixed notch n corresponding to the return needle. i and the target blood collection tube number n′ i Calculate the rotation angle of the blood collection tube holder.

[0030] The longitudinal telescopic frame is driven to insert the reflux needle into the target blood collection tube, wherein the sliding speed of the longitudinal telescopic frame;

[0031] The rotation speed of the blood collection tube holder is set according to the needle changing angle and needle changing time.

[0032] Preferably, the sliding speed of the longitudinal telescopic frame is:

[0033]

[0034] Where π is the mathematical constant Pi, e is the sliding resistance coefficient of the longitudinal telescopic frame, and T s denoted as the shortest sliding time, h as the distance between the turntable and the blood collection fixture, k as the conversion coefficient, T0 as the delay time, and G as the stroke of the longitudinal telescopic frame.

[0035] Preferably, the rotational speed of the return needle holder is:

[0036]

[0037] Where ω is the rotational speed of the return needle holder, and T h This represents the total needle change time.

[0038] Beneficial effects

[0039] This invention provides an intelligent needle changing system based on an automated blood collection machine, which has a rotatable blood collection tube holder and a rotatable reflux needle turntable. The relative positions of the reflux needle holder and the turntable can be changed by rotation to achieve the matching of the reflux needle with any blood collection tube without manual operation, thus realizing automated needle changing in the blood collection process.

[0040] This invention also provides a control method for an intelligent needle changing system based on an automatic blood collection machine, which provides a method for the rotation and coordination of the reflux needle holder and the turntable, enabling precise coordination between the blood collection tube and the reflux needle, effectively controlling the needle changing time, ensuring a smooth blood collection and needle changing process, and improving blood collection efficiency. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the intelligent needle changing system of the dynamic blood collection machine described in this invention.

[0042] Figure 2 This is a schematic diagram of the structure of the blood collection tube fixation frame described in this invention.

[0043] Figure 3 This is a schematic diagram of the structure of the turntable described in this invention.

[0044] Figure 4 This is a schematic diagram of the pressing mechanism described in this invention. Detailed Implementation

[0045] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0046] like Figure 1 As shown, the intelligent needle changing system based on an automatic blood collection machine provided by the present invention includes: a base plate 110, a blood collection tube fixing frame 120, a turntable 130, and a pressing mechanism 140.

[0047] Blood collection needles, which include a reflux needle and a puncture needle connected by a catheter.

[0048] The blood collection tube holder 120 is ring-shaped and can be rotatably supported on the base plate 110. The blood collection tubes 100 are arranged in a circular array on the blood collection tube holder 120. The turntable 130 is elastically supported on the base plate 110 by a spring and can be rotatably fitted inside the blood collection tube holder 120. It can hold the reflux needle 100 and slide along the axial direction of the blood collection tube holder 120, so that the reflux needle can be inserted into or removed from the blood collection tube.

[0049] The pressing mechanism 140 is located on the top of the turntable 130, and can be combined with the turntable 130 to drive the turntable 130 to rotate, and can push the turntable 130 to slide axially along the blood collection tube holder 120.

[0050] like Figure 2As shown, the blood collection tube holder 120 includes: a base 121, a ring frame 122, and multiple annular fins 123. The surface of the base 121 has multiple arrayed grooves for accommodating the blood collection tubes 100; the ring frame is annular and integrally connected to the top of the base 121; multiple annular fins 123 are arrayed and sleeved on the ring frame 122, and have arrayed notches 122a to assist in fixing the blood collection tubes 100.

[0051] like Figure 3 As shown, the turntable 130 includes a rotating column 131 and a plurality of clamping parts 132, wherein the plurality of clamping parts 132 are arrayed on the top of the rotating column 131. Each clamping part 132 includes a return needle clamping groove 132a and a drive notch 132b. The return needle clamping groove 132a is an "n"-shaped notch. The drive notch 132b is disposed on the outer edge of the clamping part 132 and is located on one side of the return needle clamping groove 131.

[0052] like Figure 4 As shown, the pressing mechanism 140 includes a longitudinal telescopic frame 141 and a drive disk 142. The longitudinal telescopic frame 141 is supported on one side of the base plate 110 and located at one end of the turntable 130, and can extend and retract along the height direction of the base plate 110. The drive disk 142 is rotatably supported on the longitudinal telescopic frame 141, and has a columnar protrusion 142a at the other end. The columnar protrusion 142a can extend into the drive notch 132b to rotate the turntable 130, and through the longitudinal telescopic frame 141, the turntable 130 slides along the axial direction of the blood collection tube fixing frame 120.

[0053] As a preferred embodiment, a drive motor 150 is also included, which is disposed at one end of the blood collection tube holder 120 and is capable of driving the blood collection tube holder 120 to rotate.

[0054] A control method based on an automatic reflux needle intelligent needle changing system includes:

[0055] The multiple fixing notches arranged in an array on the blood collection tube holder are marked clockwise as n. i =1,2…i…N; and according to the fixed notch n corresponding to the return needle. i and the target blood collection tube number n′ i Calculate the rotation angle of the blood collection tube holder.

[0056] The longitudinal telescopic frame is driven to insert the reflux needle into the target blood collection tube, wherein the sliding speed of the longitudinal telescopic frame;

[0057] The rotation speed of the blood collection tube holder is set according to the needle changing angle and needle changing time.

[0058] Preferably, the sliding speed of the longitudinal telescopic frame is:

[0059]

[0060] Where π is the mathematical constant Pi, e is the sliding resistance coefficient of the longitudinal telescopic frame, and T s denoted as the shortest sliding time, h as the distance between the turntable and the blood collection fixture, k as the conversion coefficient, T0 as the delay time, and G as the stroke of the longitudinal telescopic frame.

[0061] Preferably, the rotational speed of the return needle holder is:

[0062]

[0063] Where ω is the rotational speed of the return needle holder, and T h This represents the total needle change time.

[0064] This invention provides an intelligent needle changing system based on an automated blood collection machine, which has a rotatable blood collection tube holder and a rotatable reflux needle turntable. The relative positions of the reflux needle holder and the turntable can be changed by rotation to achieve the matching of the reflux needle with any blood collection tube without manual operation, thus realizing automated needle changing in the blood collection process.

[0065] This invention also provides a control method for an intelligent needle changing system based on an automatic blood collection machine, which provides a method for the rotation and coordination of the reflux needle holder and the turntable, enabling precise coordination between the blood collection tube and the reflux needle, effectively controlling the needle changing time, ensuring a smooth blood collection and needle changing process, and improving blood collection efficiency.

[0066] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. An intelligent needle changing system based on an automatic blood sampling machine, characterized in that, The utility model relates to a blood sampling device, which comprises: a blood sampling needle comprising a backflow needle and a puncture needle connected by a conduit; a base plate; a blood sampling tube fixing frame in the shape of a ring and rotatably supported on the base plate, wherein the blood sampling tubes are arranged in a circumferential array on the blood sampling tube fixing frame; a rotating disc elastically supported on the base plate and rotatably sleeved on the blood sampling tube fixing frame, capable of clamping the backflow needle and axially sliding along the blood sampling tube fixing frame to insert or pull out the backflow needle from the blood sampling tubes; a pressing mechanism arranged on the top of the rotating disc, capable of rotating the rotating disc and pushing the rotating disc to axially slide along the blood sampling tube fixing frame; the blood sampling tube fixing frame comprises: a base having a plurality of grooves arranged in an array on the surface for accommodating the blood sampling tubes; a ring frame in the shape of a ring and integrally connected to the top of the base; a plurality of annular fins arranged in an array on the ring frame and having a plurality of apertures arranged in an array to assist in fixing the blood sampling tubes; the rotating disc comprises: a rotating column; a plurality of clamping portions arranged in an array on the top of the rotating column; each clamping portion comprises: a backflow needle clamping groove in the shape of an "n" aperture; a driving aperture arranged on the outer edge of the clamping portion and located on one side of the backflow needle clamping groove; the pressing mechanism comprises: a longitudinal telescopic frame supported on one side of the base plate and located at one end of the rotating disc, capable of telescoping along the height direction of the base plate; a driving disc rotatably supported on the longitudinal telescopic frame and having a columnar protrusion on the other end; wherein the columnar protrusion can extend into the driving aperture to drive the rotating disc to rotate and axially slide along the blood sampling tube fixing frame through the longitudinal telescopic frame; a driving motor arranged at one end of the blood sampling tube fixing frame and capable of driving the blood sampling tube fixing frame to rotate.

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