Needle clamping mechanism, needle heat-sealing and cutting-off device, and blood collection equipment

Abstract

An embodiment of the present invention provides a needle clamping mechanism, a needle heat-sealing and severing device, and a blood collection device. The needle clamping mechanism includes a clamping bracket, a first clamping member, a second clamping member, and a limiting member. At least one of the first clamping member and the second clamping member is slidably mounted on the clamping bracket. A clamping space is defined between the first clamping member and the second clamping member, and the clamping space is used to accommodate a needle inserted along the installation direction, and the installation direction is parallel to the axial direction of the needle. The limiting member restricts the movement of the needle along the installation direction, so that the needle clamping mechanism can clamp or release the needle by adjusting the size of the clamping space, thereby replacing the operation of a caregiver holding the needle by hand, avoiding the needle from stabbing the caregiver, and avoiding the influence of hand tremors on heat sealing. Since the installation direction is parallel to the axial direction of the needle, it is convenient for the caregiver to insert the needle into the clamping space along the axial direction of the needle, so that the needle inlet of the device does not need to be set too large. The limiting member prevents the needle from being inserted into the clamping space excessively.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular, to a needle clamping mechanism, a needle heat-sealing and severing device, and a blood collection device. Background Art

[0002] Currently, during the blood collection process in various scenarios such as blood stations, blood collection vehicles, and blood collection rooms, nursing staff need to hold the needle by hand to dock and puncture the sampling tube to complete blood sample collection; or after blood collection, the nursing staff need to hold the needle by hand to thermally sever the blood transfusion tube connected to the needle on the thermal sealing clamp mechanism so as to discard the needle. The above manual operation of holding the needle by hand is likely to cause the needle to stab the nursing staff. In addition, during the process of thermally severing the blood transfusion tube of the needle, the nursing staff need to hold the needle still to avoid affecting the thermal sealing of the thermal sealing clamp mechanism, which is inconvenient to operate. Summary of the Invention

[0003] Embodiments of the present invention provide a needle clamping mechanism, a needle heat-sealing and severing device, and a blood collection device to solve the above technical problems.

[0004] Embodiments of the present invention achieve the above object through the following technical solutions.

[0005] In a first aspect, an embodiment of the present invention provides a needle clamping mechanism, which includes a clamping bracket, a first clamping member, a second clamping member, and a limiting member. At least one of the first clamping member and the second clamping member is slidably mounted on the clamping bracket. A clamping space is formed between the first clamping member and the second clamping member for accommodating a needle inserted along the installation direction, and the installation direction is parallel to the axial direction of the needle. The limiting member restricts the movement of the needle along the installation direction.

[0006] In some embodiments, the second clamping member is slidably mounted on the clamping bracket. The needle clamping mechanism further includes a needle engaging member, which protrudes from the surface of the second clamping member facing the clamping space. The needle engaging member of the clamping mechanism in the clamping state is engaged in the card slot of the needle to restrict the movement of the needle.

[0007] In some embodiments, the limiting member protrudes from the surface of the second clamping member facing the clamping space, and the height by which the limiting member protrudes from the second clamping member is greater than the height by which the needle engaging member protrudes from the second clamping member.

[0008] In some embodiments, the first clamping member is fixedly connected to the clamping bracket, and the second clamping member includes a stopper and a slider. The stopper protrudes from the surface of the slider facing the clamping space, and the slider is slidably mounted on the clamping bracket.

[0009] In some embodiments, the clamping bracket includes a connected clamping base and a slider base. The first clamping member is fixedly connected to the clamping base, the slider is slidably connected to the slider base, and the stopper is disposed at a relative interval from the clamping base.

[0010] In some embodiments, the slider base is provided with a guide hole, and the direction in which the guide hole penetrates the slider base is parallel to the direction of the second clamping member towards the first clamping member, and the slider is slidably disposed through the guide hole.

[0011] In some embodiments, the first clamping member is fixedly connected to the clamping bracket, and the second clamping member is slidably mounted on the clamping bracket. The clamping mechanism further includes a clamping drive motor and a clamping transmission assembly. The clamping transmission assembly is connected between the second clamping member and the clamping drive motor, and the clamping drive motor drives the clamping transmission assembly to move so as to drive the second clamping member to selectively move towards or away from the first clamping member.

[0012] In some embodiments, the clamping transmission assembly includes a crank and a connecting rod. The crank is connected to the output shaft of the clamping drive motor, and the connecting rod is respectively hinged between the crank and the second clamping member. The hinge point of the connecting rod and the crank deviates from the rotation shaft of the crank, and the clamping drive motor drives the crank to move so as to drive the second clamping member to move.

[0013] In some embodiments, the needle clamping mechanism further includes a sensor and a controller. The sensor is mounted on the first clamping member and is used to detect the clamping space. The controller is electrically connected to the sensor and the clamping drive motor respectively, and the controller controls the clamping drive motor according to the detection result of the sensor.

[0014] In a second aspect, an embodiment of the present invention further provides a needle heat-sealing and disconnecting device, which includes the needle clamping mechanism, a heat-sealing caliper mechanism, and a driving mechanism according to any of the above embodiments. The heat-sealing caliper mechanism is used to heat-seal the blood transfusion tube connected to the needle, and the driving mechanism is connected to the needle clamping mechanism and drives the needle clamping mechanism to move relative to the heat-sealing caliper mechanism to disconnect the heat-sealed needle from the blood transfusion tube.

[0015] In a third aspect, an embodiment of the present invention further provides a blood collection device, which includes a housing and the needle heat-sealing and disconnecting device according to any of the above embodiments, and the needle heat-sealing and disconnecting device is installed in the housing.

[0016] In the needle clamping mechanism, the needle heat-sealing and cutting device, and the blood collection device provided by the embodiments of the present invention, at least one of the first clamping member and the second clamping member is slidably mounted on the clamping bracket. A clamping space is defined between the first clamping member and the second clamping member, and the clamping space is used to accommodate a needle inserted along the installation direction, so that the needle clamping mechanism can clamp or release the needle by adjusting the size of the clamping space, thus replacing the operation of a caregiver holding the needle by hand. This not only avoids the needle from stabbing the caregiver but also avoids the influence of the caregiver's hand shaking on the heat-sealing of the heat-sealing caliper mechanism. Since the installation direction is parallel to the axial direction of the needle, the needle clamping mechanism can be adapted to a device with a needle inlet opened on the side. On the one hand, it is convenient for the caregiver to insert the needle into the clamping space along the axial direction of the needle, and on the other hand, it can make the needle inlet of the device match the diameter of the needle without being set too large, avoiding the needle inlet of the device having a too long length due to adapting to the way of inserting the needle along the radial direction, resulting in a too large opening area of the needle inlet that is prone to dust accumulation and inconvenient for the caregiver's daily cleaning. On the other hand, since the caregiver's hand is always outside the clamping space during the process of holding the needle and inserting it into the clamping space along the installation direction, compared with the way of inserting the needle along the radial direction, the risk of the first clamping member and the second clamping member pinching the caregiver can be effectively reduced. In addition, the limiting member of the needle clamping mechanism restricts the axial movement of the needle, which can prevent the caregiver from inserting the needle too shallowly resulting in improper insertion or over-inserting the needle into the clamping space, thus avoiding the needle not being clamped due to improper insertion or the needle directly falling off due to over-insertion, and avoiding the heat-sealing part of the blood transfusion tube being too far from the needle, and also avoiding the needle carrying too long a remaining blood transfusion tube after being separated from the blood transfusion tube, which affects the subsequent needle recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 The structural schematic diagram of the needle and the blood transfusion tube in the prior art is shown.

[0019] Figure 2 The structural schematic diagram of the needle clamping mechanism in the clamping state according to the embodiment of the present invention is shown.

[0020] Figure 3 The structural schematic diagram of the needle clamping mechanism in the released state according to the embodiment of the present invention is shown.

[0021] Figure 4 ShowsFigure 2 Partial structural schematic diagram of the needle clamping mechanism

[0022] Figure 5 Shows Figure 2 Partial structural schematic diagram of the clamping bracket of the needle clamping mechanism

[0023] Figures 6 to 8 Structural schematic diagram of the needle heat-sealing and severing device according to an embodiment of the present invention

[0024] Figures 9 to 11 Structural schematic diagram of the driving mechanism of the needle heat-sealing and severing device according to an embodiment of the present invention

[0025] Figure 12 Schematic diagram showing a part of the driving mode of the needle heat-sealing and severing device according to an embodiment of the present invention

[0026] Figure 13 Partial structural schematic diagram of the needle heat-sealing and severing device according to an embodiment of the present invention

[0027] Figure 14 Shows Figure 13 Structural schematic diagram of another posture of the needle heat-sealing and severing device

[0028] Figure 15 Shows Figure 6 Structural schematic diagram of the needle cap clamping mechanism of the needle heat-sealing and severing device in a clamped state

[0029] Figure 16 Shows Figure 6 Structural schematic diagram of the needle cap clamping mechanism of the needle heat-sealing and severing device in a released state Detailed implementation manners

[0030] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0031] During blood collection, nursing staff generally use a needle to pierce the human body for blood collection. Nursing staff generally use Figure 1The needle 300 shown, the needle 300 of this structure is a common part in the industry. The needle handle 301 of the needle 300 is connected between the needle rod 303 and the blood transfusion tube 400, and the needle handle 301 is provided with a card slot 305.

[0032] Please refer to Figures 2 to 4 , an embodiment of the present invention provides a needle clamping mechanism 50', and the needle clamping mechanism 50' is used for clamping a needle, for example, it can clamp Figure 1 the needle 300 shown. The needle clamping mechanism 50' includes a clamping bracket 410', a first clamping member 420', a second clamping member 430' and a limiting member 49'.

[0033] At least one of the first clamping member 420' and the second clamping member 430' is slidably mounted on the clamping bracket 410'. For example, in the first structural case, the second clamping member 430' is slidably mounted on the clamping bracket 410'; or for example, in the second structural case, the first clamping member 420' is slidably mounted on the clamping bracket 410'; or for example, in the third structural case, the first clamping member 420' is slidably mounted on the clamping bracket 410', and the second clamping member 430' is slidably mounted on the clamping bracket 410'.

[0034] A clamping space 440' is formed between the first clamping member 420' and the second clamping member 430'. The clamping space 440' is used for accommodating the needle 300 loaded along the installation direction, so that the needle clamping mechanism 50' can clamp or release the needle 300 by adjusting the size of the clamping space 440', thus replacing the manual operation of the nursing staff, which is convenient for the nursing staff and avoids affecting the heat sealing of the heat sealing caliper mechanism due to the shaking of the nursing staff's hands.

[0035] Since the installation direction is parallel to the axial direction of the needle 300, the needle clamping mechanism 50' can be adapted to a device with a needle inlet opened on the side. On the one hand, it is convenient for the nursing staff to load the needle 300 into the clamping space 440' along the axial direction of the needle 300; on the other hand, compared with the loading method with the installation direction being the radial direction of the needle 300, it can not only make the needle inlet of the device match the diameter of the needle 300 without being set too large, but also avoid the length of the needle inlet opened due to adapting to the loading method along the radial direction of the needle 300 being too long, resulting in an overly large opening area of the needle inlet that is prone to dust accumulation and inconvenient for the daily cleaning of the nursing staff.

[0036] The limiter 49' limits the movement of the needle 300 along the installation direction, which can prevent the nursing staff from inserting the needle 300 too shallowly and causing it to be not installed in place or over-installing the needle 300 into the clamping space 440', thereby preventing the needle 300 from being unable to be clamped due to incomplete installation or over-installing the needle 300 and causing the needle 300 to fall directly, and prevents the heat-sealed part of the blood transfusion tube 400 from being too far away from the needle 300, thereby preventing the needle 300 from carrying too long a remaining blood transfusion tube after being separated from the blood transfusion tube 400 and affecting the subsequent needle recovery. In addition, when the needle clamping mechanism 50' is used for the needle capping operation, since the needle capping operation is to dock the needle cap 200 with the needle 300 so that the needle cap 200 covers the needle 300 to prevent the needle shaft 303 of the needle 300 from stabbing a person, the limiter 49' can also prevent the nursing staff from over-loading the needle 300 into the needle clamping mechanism 50', resulting in the needle cap 200 and the needle 300 not being properly docked during the subsequent docking.

[0037] The limiting member 49' may be in the shape of a long strip, and the extending direction of the limiting member 49' may be in the direction from the first clamping member 420' to the second clamping member 430', so that one end of the limiting member 49' faces the first clamping member 420', and the other end of the limiting member 49' faces the second clamping member 430'. The length of the limiting member 49' may match the radial dimension of the needle 300, so that the length of the limiting member 49' is not too short, thereby helping the limiting member 49' to better limit the movement of the needle 300 along the installation direction. In other embodiments, the limiting member 49' may be in the shape of a block or other shapes.

[0038] The limiting member 49' may be connected to the first clamping member 420', or may be connected to the second clamping member 430', or may be connected to the clamping bracket 410'. For example, in the present embodiment, the limiting member 49' is fixedly connected to the second clamping member 430', and the limiting member 49' may be convexly disposed on the surface of the second clamping member 430' facing the clamping space 440'. The number of limiting members 49' may be multiple, and the term "multiple" means greater than or equal to two. Multiple limiting members 49' may be spaced and distributed on the second clamping member 430', and multiple limiting members 49' may better limit the movement of the needle 300 along the installation direction.

[0039] The needle clamping mechanism 50' may further include a clamping transmission assembly 450' and a clamping drive motor 460'. The clamping transmission assembly 450' is configured to transmit the power of the clamping drive motor 460' to the clamping member, so that at least one of the first clamping member 420' and the second clamping member 430' slides relative to the clamping bracket 410', thereby changing the size of the clamping space 440' and enabling the needle clamping mechanism 50' to selectively be in a clamping state or a released state. Among them, the clamping space 440' of the needle clamping mechanism 50' in the clamping state is smaller than that in the released state. The needle clamping mechanism 50' in the clamping state can clamp the needle 300, as Figure 2 shown; the needle clamping mechanism 50' in the released state can release the needle 300, as Figure 3 shown.

[0040] In this application, the first structure is taken as an example for illustration, and the structures such as the clamping bracket 410', the first clamping member 420', the second clamping member 430', and the clamping transmission assembly 450' can all be adjusted adaptively. For example, the clamping bracket 410' may include a clamping member base 4101 and a slider base 4102, and the clamping member base 4101 and the slider base 4102 can be connected. For example, the clamping member base 4101 and the slider base 4102 can be independent structures, and the two can be fixedly connected by means such as gluing, snap-fitting, and threaded connection; alternatively, the clamping member base 4101 and the slider base 4102 can be an integral structure, and the two can be integrally formed by a mold. The clamping member base 4101 can be used to carry structures such as the first clamping member 420', the second clamping member 430', and the needle 300; the slider base 4102 can be used to cooperate with the second clamping member 430' to realize slidable installation of the second clamping member 430' on the clamping bracket 410'.

[0041] The first clamping member 420' can be fixedly connected to the clamping member base 4101, and the first clamping member 420' can be fixed to the clamping member base 4101 by fasteners such as bolts and screws; alternatively, the first clamping member 420' can also be an integrally formed structure with the clamping member base 4101.

[0042] The second clamping member 430' may include a slider 4302 and a stopper 4301, the slider 4302 and the stopper 4301 can be connected, and the limiting member 49' can be connected to the slider 4302. The slider 4302 is slidably installed on the slider base 4102, thereby enabling the second clamping member 430' to slide on the clamping bracket 410'.

[0043] The slider 4302 may include a sliding portion 4303 and a clamping portion 4304. The sliding portion 4303 and the clamping portion 4304 may be connected. For example, the sliding portion 4303 and the clamping portion 4304 may be independent structures, and the two may be fixedly connected by means such as gluing, snapping, or threaded connection. Another example is that the sliding portion 4303 and the clamping portion 4304 may be an integral structure, and the two may be integrally formed by a mold. The limiting member 49' may be connected to the clamping portion 4304.

[0044] The sliding portion 4303 is used for sliding connection with the slider base 4102, and the structure of the slider base 4102 may be adaptively adjusted according to the sliding portion 4303. For example, please refer to Figure 4 and Figure 5 , the sliding portion 4303 may be rod-shaped; the slider base 4102 may be provided with a guide hole 4103, and the direction in which the guide hole 4103 penetrates the slider base 4102 may be parallel to the direction of the second clamping member 430' towards the first clamping member 420'. The sliding portion 4303 passes through the guide hole 4103, so that the slider 4302 can slidably pass through the guide hole 4103. The guide hole 4103 helps to guide and limit the sliding of the slider 4302 on the clamping bracket 410', thereby improving the sliding stability of the second clamping member 430'.

[0045] The clamping portion 4304 is used for cooperating with the first clamping member 420' to clamp the needle 300. The clamping portion 4304 may be connected to the surface of the sliding portion 4303 facing the first clamping member 420', so that the clamping portion 4304 can be located between the first clamping member 420' and the sliding portion 4303. The clamping portion 4304 can move towards the first clamping member 420' under the drive of the sliding portion 4303, and can clamp the needle 300 when the clamping portion 4304 and the first clamping member 420' jointly abut against the needle 300; the clamping portion 4304 can also move away from the first clamping member 420' under the drive of the sliding portion 4303 to release the needle 300.

[0046] The stopper 4301 may protrude from the surface of the slider 4302 facing the clamping space 440', and the stopper 4301 may be spaced apart from the clamping member base 4101. The stopper 4301 and the clamping member base 4101 can jointly limit the crosstalk of the needle 300 along the radial direction of the needle 300, making the clamping of the needle 300 by the needle clamping mechanism 50' more stable, thereby reducing the influence on the heat sealing process of the heat sealing caliper mechanism; in addition, when the needle clamping mechanism 50' is applied to the needle capping operation, it also helps to make the process of docking the needle cap 200 and the needle 300 more stable.

[0047] Since the second clamping member 430' is slidably mounted on the clamping bracket 410', the clamping transmission assembly 450' can be connected between the second clamping member 430' and the clamping drive motor 460'. For example, the clamping transmission assembly 450' can be hinged to the sliding portion 4303. The clamping drive motor 460' drives the clamping transmission assembly 450' to move, so as to drive the second clamping member 430' to selectively move towards or away from the first clamping member 420', thereby changing the size of the clamping space 440', and enabling the needle clamping mechanism 50' to be selectively in the clamping state or the released state.

[0048] During the process of the needle clamping mechanism 50' clamping the needle 300, the clamping drive motor 460' can drive the second clamping member 430' to move away from the first clamping member 420' through the clamping transmission assembly 450', so that the needle clamping mechanism 50' is in the released state. Then, the needle 300 can be inserted into the clamping space 440' of the needle clamping mechanism 50' along the installation direction. During the process of the needle 300 being inserted into the clamping space 440', the caregiver can know that the needle 300 has been installed in place by sensing that the needle 300 is blocked by the limiting member 49'. Finally, the clamping drive motor 460' can drive the second clamping member 430' to move towards the first clamping member 420' through the clamping transmission assembly 450', so that the needle clamping mechanism 50' is in the clamping state, thereby clamping the needle 300.

[0049] The clamping transmission assembly 450' can include a crank 57 and a connecting rod 58, and the crank 57 is connected to the connecting rod 58. The crank 57 can be connected to the output shaft of the clamping drive motor 460'. For example, the crank 57 can be fixed to the output shaft of the clamping drive motor 460', so that the clamping drive motor 460' can drive the crank 57 to rotate.

[0050] The connecting rod 58 is respectively hinged between the crank 57 and the second clamping member 430'. For example, one end of the connecting rod 58 is hinged to the crank 57, and the other end of the connecting rod 58 is hinged to the sliding portion 4303 of the second clamping member 430'. The hinge point of the connecting rod 58 and the crank 57 deviates from the rotation axis of the crank 57, which helps to drive the connecting rod 58 to move along the radial direction of the crank 57 when the clamping drive motor 460' drives the crank 57 to rotate. Subsequently, it can be realized that the clamping drive motor 460' drives the crank 57 to move to drive the second clamping member 430' to move, and the needle clamping mechanism 50' can also be selectively in the clamping state or the released state.

[0051] During the process of clamping the needle 300 by the needle clamping mechanism 50', the clamping drive motor 460' can drive the crank 57 to rotate in a direction away from the second clamping member 430', so that the crank 57 drives the second clamping member 430' to slide in a direction away from the first clamping member 420' through the connecting rod 58, so that the needle clamping mechanism 50' is in a loosened state; then the needle 300 can be axially mounted in the clamping space 440' of the needle clamping mechanism 50'; finally, the clamping drive motor 460' can drive the crank 57 to rotate in the direction of the second clamping member 430', so that the crank 57 drives the second clamping member 430' to slide in the direction of the first clamping member 420' through the connecting rod 58. When the clamping drive motor 460' drives the crank 57, the connecting rod 58, and the second clamping member 430' to be generally in a collinear position (the dead center position of the crank 57 and the connecting rod 58), the distance between the second clamping member 430' and the clamping drive motor 460' is the largest. When the clamping drive motor 460' does not move, the second clamping member 430' cannot move, and the distance between the second clamping member 430' and the first clamping member 420' is the smallest and the relative position remains unchanged, so that the needle 300 can be clamped. At this time, the needle clamping mechanism 50' is in a clamping state. After the needle cap 200 is docked with the needle 300 and the blood transfusion tube 400 is heat-sealed and disconnected, the needle clamping mechanism 50' can be in a loosened state, so that the needle 300 can be loosened.

[0052] The needle clamping mechanism 50' can also be provided with corresponding matching structures to further ensure that the needle cap 200 is docked with the needle 300 in place, and the matching structure can be designed according to the structure of the needle 300. For example, please refer to Figure 4 , the needle clamping mechanism 50' can further include a needle engaging member 51. The needle engaging member 51 can protrude from the surface of the second clamping member 430' facing the clamping space 440'. Since the limiting member 49' also protrudes from the surface of the second clamping member 430' facing the clamping space 440', the height of the limiting member 49' protruding from the second clamping member 430' can be greater than the height of the needle engaging member 51 protruding from the second clamping member 430'. In this way, it helps that when the limiting member 49' limits the excessive insertion of the needle 300, the needle engaging member 51 will not block the insertion of the needle 300.

[0053] After the second clamping member 430' drives the needle engaging member 51 to move towards the first clamping member 420' together to make the needle clamping mechanism 50' in a clamping state, the needle engaging member 51 of the needle clamping mechanism 50' in the clamping state is clamped in the card slot 305 of the needle 300 to restrict the movement of the needle 300, so that during the subsequent docking process of the needle cap 200 and the needle 300, the needle 300 will not move backward due to being squeezed by the needle cap 200 and the docking will not be in place. In addition, the second clamping member 430' can also drive the needle engaging member 51 to move away from the first clamping member 420' together to make the needle clamping mechanism 50' in a released state. The needle clamping mechanism 50' in the released state can, on the one hand, make the needle engaging member 51 outside the card slot 305 of the needle 300, avoiding blocking the needle 300 from detaching from the needle clamping mechanism 50'; on the other hand, it can also make the needle engaging member 51 not block the loading of the needle 300.

[0054] The needle clamping mechanism 50' may further include a sensor 401' and a controller (not shown in the figure). The sensor 401' can be installed on the first clamping member 420'. The sensor 401' is used to detect the clamping space 440' to determine whether the needle 300 in the clamping space 440' is loaded in place. The controller can be electrically connected to the sensor 401' and the clamping drive motor 460' respectively. For example, the controller can be electrically connected to the sensor 401' and the clamping drive motor 460' through wires respectively, and then the controller can control the clamping drive motor 460' according to the detection result of the sensor 401'.

[0055] For example, after the controller detects that there is no needle 300 in the clamping space 440' according to the sensor 401', it can control the clamping drive motor 460' to rotate and make the second clamping member 430' move away from the first clamping member 420' to make the needle clamping mechanism 50' in a released state for the caregiver to load the needle 300. Another example is that after the controller detects that there is a needle 300 in the clamping space 440' according to the sensor 401', it can control the clamping drive motor 460' to rotate and make the second clamping member 430' move towards the first clamping member 420' to make the needle clamping mechanism 50' in a clamping state to clamp the needle 300. The controller can be a circuit board.

[0056] In addition, when the needle clamping mechanism 50' is applied to the needle capping operation, before the needle cap 200 is docked with the needle 300, the controller can control the needle clamping mechanism 50' not to perform the docking operation when the sensor 401' does not detect that the needle 300 is inserted into the clamping space 440', thereby avoiding the no-load operation of the needle clamping mechanism 50'. After the needle 300 is separated from the blood transfusion tube 400, the controller can also control the needle clamping mechanism 50' to be in the released state again when the sensor 401' detects that the needle 300 has not disengaged from the clamping space 440', so that the needle 300 together with the needle cap 200 can fall into the recycling box. The sensor 401' can be of types such as an optical fiber sensor or a photoelectric sensor.

[0057] Please refer to Figures 6 to 8 , an embodiment of the present invention further provides a needle heat-sealing and disconnecting device 100. The needle heat-sealing and disconnecting device 100 may include a needle clamping mechanism 50', a heat-sealing caliper mechanism 30, and a driving mechanism 20. The needle clamping mechanism 50' can be of the structural type of any of the above embodiments. The heat-sealing caliper mechanism 30 is used to heat-seal the blood transfusion tube 400 connected to the needle 300. The driving mechanism 20 is connected to the needle clamping mechanism 50' and drives the needle clamping mechanism 50' to move relative to the heat-sealing caliper mechanism 30 to disconnect the heat-sealed needle 300 from the blood transfusion tube 400.

[0058] The heat-sealing caliper mechanism 30 can adopt general components in the industry. Since the heat-sealing caliper mechanism 30 can make the heat-sealed part of the blood transfusion tube 400 and the needle 300 easily break, the driving mechanism 20 can drive the needle clamping mechanism 50' to move in a direction away from the heat-sealing caliper mechanism 30, thereby tearing off the heat-sealed part of the needle 300 and the blood transfusion tube 400.

[0059] In the needle heat-sealing and detaching device 100 provided by the embodiment of the present invention, at least one of the first clamping member 420' and the second clamping member 430' is slidably mounted on the clamping bracket 410'. A clamping space 440' is formed between the first clamping member 420' and the second clamping member 430'. The clamping space 440' is used to accommodate the needle 300 loaded along the installation direction, so that the needle clamping mechanism 50' can clamp or release the needle 300 by adjusting the size of the clamping space 440'. Thus, it can replace the operation of a caregiver holding the needle by hand, avoiding both the needle 300 stabbing the caregiver and the influence of the caregiver's hand shaking on the heat-sealing of the heat-sealing caliper mechanism 30. Since the installation direction is parallel to the axial direction of the needle 300, the needle clamping mechanism 50' can be adapted to a device with a needle inlet opened on the side. On the one hand, it is convenient for the caregiver to load the needle 300 into the clamping space 440' along the axial direction of the needle 300, and the needle inlet of the device can be matched with the diameter of the needle 300 without being set too large, avoiding the needle inlet of the device having a too long length for accommodating the needle loaded along the radial direction of the needle 300, resulting in an overly large opening area of the needle inlet that is prone to dust accumulation and inconvenient for the caregiver's daily cleaning. On the other hand, during the process of the caregiver holding the needle 300 and loading it into the clamping space 440' along the installation direction, the caregiver's hand is always outside the clamping space 440'. Compared with the way of loading along the radial direction of the needle, it can effectively reduce the risk of the first clamping member 420' and the second clamping member 430' pinching the caregiver. In addition, the limiting member 49' of the needle clamping mechanism 50' restricts the axial movement of the needle 300, which can prevent the caregiver from loading the needle 300 too shallowly resulting in improper loading or overloading the needle 300 into the clamping space 440', thus avoiding the needle 300 not being clamped due to improper loading or the needle 300 directly falling due to overloading, and avoiding the heat-sealing position of the blood transfusion tube 400 being too far from the needle 300, and also avoiding the needle 300 carrying an overly long remaining blood transfusion tube 400 after separation from the blood transfusion tube 400, which affects the subsequent needle recovery.

[0060] The needle heat-sealing and detaching device 100 may further include a needle cap clamping mechanism 40'. The needle cap clamping mechanism 40' is used to clamp the needle cap 200. The needle heat-sealing and detaching device 100 can perform the operation of putting a cap on the needle through the needle cap clamping mechanism 40' and the needle clamping mechanism 50', and can also cover the needle cap 200 on the needle 300 before the heat-sealing caliper mechanism 30 performs the heat-sealing operation, which can prevent the blood in the needle 300 from oozing out and dripping from the needle shaft due to the extrusion of the heat-sealing caliper mechanism 30 during the heat-sealing process of the blood transfusion tube 400, avoiding contamination, and can also prevent the residual blood from oozing out and dripping during the separation process of the needle 300 and the blood transfusion tube 400.

[0061] In the operation of putting on the needle cap, the driving mechanism 20 can drive at least one of the needle cap clamping mechanism 40' and the needle tip clamping mechanism 50' to move, so that the needle cap 200 is docked with the needle tip 300, and thus the needle cap 200 can be covered on the needle tip 300. For example, in the first driving mode, the driving mechanism 20 drives both the needle cap clamping mechanism 40' and the needle tip clamping mechanism 50' to move, so that the needle cap 200 is docked with the needle tip 300. Another example is the second driving mode, in which the driving mechanism 20 drives the needle cap clamping mechanism 40' to move, so that the needle cap 200 is docked with the needle tip 300. Another example is the third driving mode, in which the driving mechanism 20 drives the needle tip clamping mechanism 50' to move, so that the needle tip 300 is docked with the needle cap 200.

[0062] In the case of the first driving mode, please refer to Figures 9 to 11 , the driving mechanism 20 may include a first driving component 60 and a second driving component 70, and the first driving component 60 and the second driving component 70 may be connected. The first driving component 60 may be connected to the needle cap clamping mechanism 40', and the first driving component 60 may drive the needle cap clamping mechanism 40' to move. The second driving component 70 may be connected to the needle tip clamping mechanism 50', and the second driving component 70 may drive the needle tip clamping mechanism 50' to move.

[0063] The first driving component 60 can drive the needle cap clamping mechanism 40' to move back and forth along a first path, and the first path may include at least one straight path segment. For example, the first path may include one straight path segment; another example is that the first path may include two straight path segments, and the extending directions of the two straight path segments may be different and connected, and the lengths of the two straight path segments may be the same or different; another example is that the first path may include three straight path segments, and the three straight path segments may be connected, where the extending directions of two of the straight path segments may be different, and the extending direction of the remaining one straight path segment may be the same as that of one of the two straight path segments. In other embodiments, the number of straight path segments included in the first path may also be four, five, six, etc., which will not be listed one by one here.

[0064] The first driving component 60 may include a first-direction needle cap driving unit 61, and the first-direction needle cap driving unit 61 may be connected to the needle cap clamping mechanism 40'. The first-direction needle cap driving unit 61 can drive the needle cap clamping mechanism 40' to move linearly back and forth along a first direction, so that the needle cap clamping mechanism 40' can move along a straight path segment, and the first direction may be Figures 9 to 11 the X-axis direction in

[0065] The first-direction needle cap driving unit 61 may include a first needle cap driving bracket 62, a first needle cap guide rail pair 63, and a first needle cap driving module 64. Both the first needle cap guide rail pair 63 and the first needle cap driving module 64 may be installed on the first needle cap driving bracket 62.

[0066] The first needle cap driving bracket 62 can serve as the base of the first-direction needle cap driving unit 61 and carry structures such as the first needle cap guide rail pair 63 and the first needle cap driving module 64. The first needle cap driving bracket 62 can also serve as a connecting part of the first-direction needle cap driving unit 61 to facilitate connection and combination with other structures.

[0067] The first needle cap guide rail pair 63 can adopt common parts to simplify the manufacturing difficulty and cost of the first driving assembly 60. The guiding part of the first needle cap guide rail pair 63 can be fixedly connected to the first needle cap driving bracket 62. For example, the guiding part of the first needle cap guide rail pair 63 can be connected to the first needle cap driving bracket 62 through fasteners such as bolts and screws. The slider of the first needle cap guide rail pair 63 can be connected to the needle cap clamping mechanism 40'. For example, the slider of the first needle cap guide rail pair 63 and the needle cap clamping mechanism 40' can be connected through fasteners such as bolts and screws.

[0068] The first needle cap driving module 64 can be connected to the needle cap clamping mechanism 40' so that the first needle cap driving module 64 can drive the needle cap clamping mechanism 40' to slide on the first needle cap guide rail pair 63. The first needle cap driving module 64 can include a first needle cap driving motor 641, a first needle cap main synchronous pulley, a first needle cap driven synchronous pulley 643, and a first needle cap synchronous belt 645. Both the first needle cap driving motor 641 and the first needle cap driven synchronous pulley 643 can be installed on the first needle cap driving bracket 62.

[0069] The body of the first needle cap driving motor 641 can be fixedly connected to the first needle cap driving bracket 62 through fasteners such as bolts and screws. The output shaft of the first needle cap driving motor 641 can be fixedly connected to the first needle cap main synchronous pulley. The first needle cap driven synchronous pulley 643 is rotatably installed on the first needle cap driving bracket 62. The first needle cap synchronous belt 645 is sleeved on the first needle cap main synchronous pulley and the first needle cap driven synchronous pulley 643, so that the first needle cap driving motor 641 can drive the first needle cap synchronous belt 645 to transmit power and achieve the belt transmission effect. The first needle cap synchronous belt 645 can be connected to the needle cap clamping mechanism 40'. In this way, under the drive of the first needle cap driving motor 641, the first needle cap synchronous belt 645 can drive the needle cap clamping mechanism 40' to move. The first needle cap driving module 64 uses a synchronous belt to drive the needle cap clamping mechanism 40' to move, which helps to adapt to the movement of the needle cap clamping mechanism 40' along a straight path.

[0070] The first driving assembly 60 can also include a second-direction needle cap driving unit 66. The second-direction needle cap driving unit 66 can drive the needle cap clamping mechanism 40' to move linearly back and forth along a second direction, which is different from the first direction, so as to enable the needle cap clamping mechanism 40' to move along more than or equal to two straight paths. Among them, the second direction can beFigures 9 to 11 in the Y-axis direction. In this way, the needle cap clamping mechanism 40' can be moved to a position far from the needle clamping mechanism 50' under the combined drive of the first-direction needle cap driving unit 61 and the second-direction needle cap driving unit 66, so that the needle cap clamping mechanism 40' and the needle clamping mechanism 50' are not too close to each other, facilitating the nursing staff to place the needle cap 200 on the needle cap clamping mechanism 40' and facilitating the nursing staff to place the needle 300 on the needle clamping mechanism 50'.

[0071] In addition, since the needle 300 may be squeezed by the clamping force of the needle clamping mechanism 50' during the process of the needle clamping mechanism 50' clamping the needle 300, resulting in residual blood droplets in the needle 300 falling around the needle clamping mechanism 50', before the needle cap 200 is docked with the needle 300, the first driving assembly 60 drives the needle cap clamping mechanism 40' to a position far from the needle clamping mechanism 50', which can reduce the situation that the nursing staff contaminates the blood dripping near the needle clamping mechanism 50' during the process of placing the needle cap 200 on the needle cap clamping mechanism 40' and directly pricks the blood donor, thus causing medical infections to the blood donor.

[0072] The second-direction needle cap driving unit 66 can be connected to the first-direction needle cap driving unit 61. The second-direction needle cap driving unit 66 can drive the first-direction needle cap driving unit 61 to move linearly back and forth in the second direction, so as to drive the needle cap clamping mechanism 40' to move linearly back and forth in the second direction.

[0073] The structure of the second-direction needle cap driving unit 66 can be the same as, different from, or partially the same as the structure of the first-direction needle cap driving unit 61. For example, the second-direction needle cap driving unit 66 can include a second needle cap driving bracket 67, a second needle cap guide rail pair 68, and a second needle cap driving module 69. Both the second needle cap guide rail pair 68 and the second needle cap driving module 69 are installed on the second needle cap driving bracket 67.

[0074] The second needle cap driving bracket 67 can serve as the base of the second-direction needle cap driving unit 66 and carry structures such as the second needle cap guide rail pair 68 and the second needle cap driving module 69. The second needle cap driving bracket 67 can also serve as a connecting part of the second-direction needle cap driving unit 66 to facilitate connection and combination with other structures.

[0075] The second needle cap guide pair 68 can adopt common parts to simplify the manufacturing difficulty and cost of the first driving component 60. The guiding member of the second needle cap guide pair 68 can be fixedly connected to the second needle cap driving bracket 67. For example, the guiding member of the second needle cap guide pair 68 can be connected to the second needle cap driving bracket 67 through fasteners such as bolts and screws. The slider of the second needle cap guide pair 68 can be connected to the first needle cap driving bracket 62. For example, the slider of the second needle cap guide pair 68 and the first needle cap driving bracket 62 can be connected through fasteners such as bolts and screws. The number of the second needle cap guide pairs 68 can be two. The two second needle cap guide pairs 68 are spaced apart and distributed on the second needle cap driving bracket 67, and both of the two second needle cap guide pairs 68 are connected to the first needle cap driving bracket 62, which helps to improve the stability of the second-direction needle cap driving unit 66 driving the first-direction needle cap driving unit 61 to slide.

[0076] The second needle cap driving module 69 can be connected to the first needle cap driving bracket 62, so that the second needle cap driving module 69 can drive the first-direction needle cap driving unit 61 to slide on the second needle cap guide pair 68. The second needle cap driving module 69 can include a second needle cap driving motor 691, a second needle cap main synchronous pulley, a second needle cap slave synchronous pulley 693 and a second needle cap synchronous belt 695. Both the second needle cap driving motor 691 and the second needle cap slave synchronous pulley 693 can be installed on the second needle cap driving bracket 67.

[0077] The body of the second needle cap driving motor 691 can be fixedly connected to the second needle cap driving bracket 67 through fasteners such as bolts and screws, and the output shaft of the second needle cap driving motor 691 can be fixedly connected to the second needle cap main synchronous pulley. The second needle cap slave synchronous pulley 693 is rotatably installed on the second needle cap driving bracket 67, and the second needle cap synchronous belt 695 is sleeved on the second needle cap main synchronous pulley and the second needle cap slave synchronous pulley 693, so that the second needle cap driving motor 691 can drive the second needle cap synchronous belt 695 to transmit power and achieve the belt transmission effect. The second needle cap synchronous belt 695 can be connected to the first needle cap driving bracket 62. Then, under the drive of the second needle cap driving motor 691, the second needle cap synchronous belt 695 can drive the first-direction needle cap driving unit 61 to move, and then drive the needle cap clamping mechanism 40' to move. The second needle cap driving module 69 adopts the synchronous belt method to drive the needle cap clamping mechanism 40' to move, which helps to adapt to the movement of the needle cap clamping mechanism 40' along a straight path.

[0078] The second driving assembly 70 can drive the needle clamping mechanism 50' to move back and forth along a second path, which is different from and connected to the first path. The second path can include at least one straight path segment. For example, the second path can include one straight path segment; or for another example, the second path can include two straight path segments, and the extending directions of the two straight path segments can be different and connected, and the lengths of the two straight path segments can be the same or different; or for another example, the second path can include three straight path segments, and the three straight path segments can be connected, where the extending directions of two of the straight path segments can be different, and the extending direction of the remaining one straight path segment can be the same as that of one of the two straight path segments. In other embodiments, the number of straight path segments included in the second path can also be four, five, six, etc., which will not be listed one by one here.

[0079] The second driving assembly 70 can include a first-direction needle driving unit 71, and the first-direction needle driving unit 71 can be connected to the needle clamping mechanism 50'. The first-direction needle driving unit 71 can drive the needle clamping mechanism 50' to move linearly back and forth in the first direction, so that the needle clamping mechanism 50' can move along a straight path segment.

[0080] The structure of the first-direction needle driving unit 71 can be the same as, different from, or partially the same as that of the first-direction needle cap driving unit 61. For example, the first-direction needle driving unit 71 can include a first needle driving bracket 72, a first needle guide rail pair 73, and a first needle driving module 74. Both the first needle guide rail pair 73 and the first needle driving module 74 can be installed on the first needle driving bracket 72.

[0081] The first needle driving bracket 72 can serve as the base of the first-direction needle driving unit 71 and carry structures such as the first needle guide rail pair 73 and the first needle driving module 74. The first needle driving bracket 72 can also serve as a connecting member of the first-direction needle driving unit 71 to facilitate connection and combination with other structures.

[0082] The first needle guide rail pair 73 can adopt a common part to simplify the manufacturing difficulty and manufacturing cost of the second driving assembly 70. The guiding member 731 of the first needle guide rail pair 73 can be fixedly connected to the first needle driving bracket 72. For example, the guiding member 731 of the first needle guide rail pair 73 can be connected to the first needle driving bracket 72 through fasteners such as bolts and screws. The slider 733 of the first needle guide rail pair 73 can be connected to the needle clamping mechanism 50'. For example, the slider 733 of the first needle guide rail pair 73 and the needle clamping mechanism 50' can be connected through fasteners such as bolts and screws.

[0083] The first needle driving module 74 can be connected to the needle clamping mechanism 50', so that the first needle driving module 74 can drive the needle clamping mechanism 50' to slide on the first needle guide pair 73. The first needle driving module 74 can include a first needle driving motor 741, a first needle driven synchronous pulley 743 and a first needle synchronous belt 745. Both the first needle driving motor 741 and the first needle driven synchronous pulley 743 can be installed on the first needle driving bracket 72.

[0084] The body of the first needle driving motor 741 can be fixedly connected to the first needle driving bracket 72 through fasteners such as bolts and screws. The output shaft of the first needle driving motor 741 can be connected to the first needle synchronous belt 745. The first needle driven synchronous pulley 743 is rotatably installed on the first needle driving bracket 72. The first needle synchronous belt 745 is sleeved on the first needle driving motor 741 and the first needle driven synchronous pulley 743, so as to drive the first needle synchronous belt 745 to transmit power and achieve the belt transmission effect. The first needle synchronous belt 745 can be connected to the needle clamping mechanism 50'. Then, driven by the first needle cap driving motor 641, the first needle synchronous belt 745 can drive the needle clamping mechanism 50' to move. The first needle driving module 74 uses a synchronous belt to drive the needle clamping mechanism 50' to move, which helps to adapt to the movement of the needle clamping mechanism 50' along a straight path.

[0085] The second driving assembly 70 can further include a second-direction needle driving unit (not shown in the figure). The second-direction needle driving unit can drive the needle clamping mechanism 50' to move linearly back and forth along a second direction, which is different from the first direction, so as to enable the needle clamping mechanism 50' to move along a straight path with more than or equal to two segments. Then, the needle clamping mechanism 50' can be driven by the first-direction needle driving unit 71 and the second-direction needle driving unit to move to a position far away from the needle cap clamping mechanism 40', so that the needle clamping mechanism 50' and the needle cap clamping mechanism 40' are not too close to each other, which is convenient for the caregiver to place the needle 300 on the needle clamping mechanism 50' and for the caregiver to place the needle cap 200 on the needle cap clamping mechanism 40'.

[0086] In addition, since the residual blood in the needle 300 may drip around the needle clamping mechanism 50' during the process of the needle clamping mechanism 50' clamping the needle 300, and the second driving assembly 70 can drive the needle clamping mechanism 50' to a position far away from the needle cap clamping mechanism 40' to clamp the needle 300, which helps to reduce the situation that the caregiver gets contaminated with the blood dripping near the needle cap clamping mechanism 40' during the process of placing the needle cap 200 on the needle cap clamping mechanism 40'.

[0087] The second-direction needle driving unit can be connected to the first-direction needle driving unit 71. The second-direction needle driving unit can drive the first-direction needle driving unit 71 to move linearly back and forth in the second direction, so as to drive the needle clamping mechanism 50' to move linearly back and forth in the second direction.

[0088] The structure of the second-direction needle driving unit can be the same as, different from, or partially the same as the structure of the first-direction needle driving unit 71. For example, the second-direction needle driving unit can include a second needle driving bracket, a second needle guide rail pair, and a second needle driving module. Both the second needle guide rail pair and the second needle driving module are installed on the second needle driving bracket.

[0089] The second needle driving bracket can serve as the base of the second-direction needle driving unit and carry structures such as the second needle guide rail pair and the second needle driving module. The second needle driving bracket can also serve as a connecting piece of the second-direction needle driving unit to facilitate connection and combination with other structures.

[0090] The second needle guide rail pair can adopt common parts to simplify the manufacturing difficulty and cost of the second driving component 70. The guiding member of the second needle guide rail pair can be fixedly connected to the second needle driving bracket. For example, the guiding member of the second needle guide rail pair can be connected to the second needle driving bracket through fasteners such as bolts and screws. The slider of the second needle guide rail pair can be connected to the first needle driving bracket 72. For example, the slider of the second needle guide rail pair and the first needle driving bracket 72 can be connected through fasteners such as bolts and screws.

[0091] The second needle driving module can be connected to the first needle driving bracket 72, so that the second needle driving module can drive the first-direction needle driving unit 71 to slide on the second needle guide rail pair. The second needle driving module can include a second needle driving motor, a first needle main synchronous pulley, a second needle slave synchronous pulley, and a second needle synchronous belt. Both the second needle driving motor and the second needle slave synchronous pulley can be installed on the second needle driving bracket.

[0092] The body of the second needle driving motor can be fixedly connected to the second needle driving bracket through fasteners such as bolts and screws, and the output shaft of the second needle driving motor can be fixedly connected to the first main needle synchronizing pulley. The second slave needle synchronizing pulley is rotatably mounted on the second needle driving bracket, and the second needle synchronous belt is sleeved on the first main needle synchronizing pulley and the second slave needle synchronizing pulley, so that the second needle driving motor can drive the second needle synchronous belt to transmit power, achieving the belt transmission effect. The second needle synchronous belt can be connected to the first needle driving bracket 72. Then, driven by the second needle cap driving motor, the second needle synchronous belt can drive the first-direction needle driving unit 71 to move, and then drive the needle clamping mechanism 50' to move. The second needle driving module uses a synchronous belt to drive the needle clamping mechanism 50' to move, which helps to adapt to the movement of the needle clamping mechanism 50' along a straight path.

[0093] In some embodiments, the straight path in the first path can also be replaced by a curved path. For example Figures 6 to 8 As shown, the first path may include a curved path, and the first-direction needle cap driving unit 61' can drive the needle cap clamping mechanism 40' to move back and forth along the curved path.

[0094] The structure of the first-direction needle cap driving unit 61' for realizing the reciprocating movement of the needle cap clamping mechanism 40' along the curved path is different from that of the above Figures 9 to 11 embodiment in which the first-direction needle cap driving unit 61 realizes the reciprocating movement of the needle cap clamping mechanism 40' along the straight path. For example, the first-direction needle cap driving unit 61' for realizing the reciprocating movement of the needle cap clamping mechanism 40' along the curved path may include a first needle cap driving bracket 62', a first guiding unit, a second guiding unit, and a first needle cap driving module. The first guiding unit is mounted on the first needle cap driving bracket 62', and the guiding direction of the first guiding unit is different from the extending direction of the straight path. The second guiding unit is mounted on the first guiding unit, the needle cap clamping mechanism 40' is mounted on the second guiding unit, and the guiding direction of the second guiding unit is parallel to the extending direction of the straight path. The first needle cap driving module 64' drives the needle cap clamping mechanism 40' to simultaneously change the displacement in the guiding direction of the first guiding unit and the guiding direction of the second guiding unit to form a curved path movement.

[0095] The first guiding unit may include a first needle cap guide pair 63', and the first guiding unit may include a first needle cap sliding member 65 and a stud 635. The first needle cap guide pair 63' and the first needle cap driving module 64' can both be mounted on the first needle cap driving bracket 62', and the first needle cap sliding member 65 can be mounted on the first needle cap guide pair 63'.

[0096] The first needle cap driving bracket 62' can serve as the base of the first-direction needle cap driving unit 61' and carry structures such as the first needle cap guide rail pair 63' and the first needle cap driving module 64'. The first needle cap driving bracket 62' can also be used as a connecting member of the first-direction needle cap driving unit 61' to facilitate connection and combination with other structures.

[0097] The first needle cap guide rail pair 63' is installed on the first needle cap driving bracket 62'. For example, the guiding member 631 of the first needle cap guide rail pair 63' can be connected to the first needle cap driving bracket 62' through fasteners such as bolts and screws. The sliding direction of the slider 633 of the first needle cap guide rail pair 63' can be the guiding direction of the first guiding unit. For example, it can be parallel to Figures 6 to 8 the Y-axis direction in

[0098] The first needle cap slider 65 is provided with a chute 651. The extending direction of the chute 651 is different from the sliding direction of the slider 633 of the first needle cap guide rail pair 63'. For example, the two directions are perpendicular to each other. The extending direction of the chute 651 can be the guiding direction of the second guiding unit. For example, it can be parallel to Figures 6 to 8 the X-axis direction in

[0099] The first needle cap driving module 64' can be connected to the first needle cap slider 65. The first needle cap driving module 64' can drive the first needle cap slider 65 to simultaneously change its displacement in the sliding direction of the slider 633 of the first needle cap guide rail pair 63' and the extending direction of the chute 651 to form a curved path movement, so as to realize the movement of the needle cap clamping mechanism 40' along the curved path. The first needle cap driving module 64' can be a rotary driving module. For example, the first needle cap driving module 64' can include a third needle cap driving motor and a connecting member. One end of the connecting member is connected to the output shaft of the third needle cap driving motor, and the other end of the connecting member is hinged to the first needle cap slider 65.

[0100] In some embodiments, the structural type of the mechanism for driving the needle head clamping mechanism 50' to move back and forth along a straight line can be adjusted according to actual needs. For example Figures 6 to 8 the structural type of the first-direction needle head driving unit 71' in Figures 9 to 11 is different from the structural type of the first-direction needle head driving unit 71 in Figures 6 to 8In this case, the first-direction needle driving unit 71' can be a linear guideway slider module. The needle clamping mechanism 50' can be connected to the slider 747 of the linear guideway slider module. The linear guideway slider module can also enable the needle clamping mechanism 50' to move along a linear path. The extending direction of this linear path can be parallel to the extending direction of the chute 651, and the extending direction of this linear path can be different from the sliding direction of the slider 633 of the first-cap guide pair 63' of the first-direction cap driving unit 61'. For example, the two directions can be perpendicular to each other. Since the linear guideway slider module is a common component in the industry, using the linear guideway slider module helps simplify the design difficulty of the second driving component 70' and reduce the manufacturing cost.

[0101] Similarly, Figures 9 to 11 The structural type of the first-direction cap driving unit 61 in this case can be adjusted according to actual requirements. For example, the first-direction cap driving unit 61 can be a linear guideway slider module. The cap clamping mechanism 40' can be connected to the slider of the linear guideway slider module. The linear guideway slider module can also enable the cap clamping mechanism 40' to move along a linear path.

[0102] Similarly, Figures 9 to 11 The structural type of the second-direction cap driving unit 66 in this case can be adjusted according to actual requirements. For example, the second-direction cap driving unit 66 can also be a linear guideway slider module. The first-direction cap driving unit 61 can be connected to the slider of the linear guideway slider module. The linear guideway slider module can also enable the first-direction cap driving unit 61 and the cap clamping mechanism 40' to move along a linear path.

[0103] Similarly, Figures 9 to 11 The structural type of the second-direction needle driving unit in this case can be adjusted according to actual requirements. For example, the second-direction needle driving unit can also be a linear guideway slider module. The first-direction needle driving unit 71 can be connected to the slider of the linear guideway slider module. The linear guideway slider module can also enable the first-direction needle driving unit 71 and the needle clamping mechanism 50' to move along a linear path.

[0104] In the case of the second driving method, the driving mechanism 20 can drive the cap clamping mechanism 40' to move back and forth along the first path so that the cap 200 is docked with the needle 300. In the case of the third driving method, the driving mechanism 20 can drive the needle clamping mechanism 50' to move back and forth along the first path so that the needle 300 is docked with the cap 200. Among them, in the case of the second driving method and the third driving method, the first path can include multiple linear paths. The specific structure and driving method of the driving mechanism 20 can refer to the case of the first driving method.

[0105] The driving mechanism 20 realizes the docking of the needle cap 200 and the needle 300 through the above-mentioned various different driving methods, which helps the needle heat-sealing and disconnection device 100 to make a choice according to the actual situation. Please refer to Figure 12 , and the following nine common methods are listed again below, where Figure 12 the direction of the arrow in is the moving direction of the corresponding needle cap clamping mechanism 40' and the needle clamping mechanism 50'.

[0106] The first method: The needle cap clamping mechanism 40' moves along a straight path.

[0107] The second method: The needle cap clamping mechanism 40' moves along a straight path, and the needle clamping mechanism 50' moves along a straight path.

[0108] The third method: The needle cap clamping mechanism 40' moves along a straight path, and the needle clamping mechanism 50' moves along two straight paths.

[0109] The fourth method: The needle cap clamping mechanism 40' moves along two straight paths.

[0110] The fifth method: The needle cap clamping mechanism 40' moves along two straight paths, and the needle clamping mechanism 50' moves along a straight path.

[0111] The sixth method: The needle cap clamping mechanism 40' moves along two straight paths, and the needle clamping mechanism 50' moves along two straight paths.

[0112] The seventh method: The needle cap clamping mechanism 40' moves along three straight paths.

[0113] The eighth method: The needle cap clamping mechanism 40' moves along a curved path, and the needle clamping mechanism 50' moves along a straight path.

[0114] The ninth method: The needle clamping mechanism 50' moves along a straight path.

[0115] Among them, when the needle heat-sealing and disconnection device 100 adopts the first or second or third or fourth or ninth method to realize the docking of the needle cap 200 and the needle 300, since the needle cap clamping mechanism 40' and the needle clamping mechanism 50' are longitudinally arranged at the initial position, when the needle heat-sealing and disconnection device 100 is applied to other devices such as blood collection devices, it can be adapted to devices with the needle cap inlet and the needle inlet opened on the same surface. For example, this surface can be parallel to Figure 9the XY plane in it. When the needle heat-sealing and separating device 100 adopts the fifth or sixth or seventh or eighth method to realize the docking of the needle cap 200 and the needle 300, since the needle cap clamping mechanism 40' and the needle clamping mechanism 50' are arranged side by side in the initial position, it is not only convenient for the nursing staff to place the needle cap 200 and the needle 300, but also when the needle heat-sealing and separating device 100 is applied to other devices such as blood collection devices, it can also be adapted to devices with the needle cap inlet and the needle inlet opened on the same side. For example, this side can be parallel to Figure 6 the YZ plane in it. In addition, when the needle capping and heat-sealing device 100 adopts the eighth method to realize the docking of the needle cap 200 and the needle 300, since the distance of the straight path of the needle clamping mechanism 50' is short, after the needle cap clamping mechanism 40' is fitted with the needle cap 200, it can move along a curved path to a position relatively close to the needle clamping mechanism 50'. In this way, when the nursing staff installs the needle 300 into the needle clamping mechanism 50', a small part of the needle 300 can extend into the needle cap 200. At this time, although the needle cap 200 has not completely covered the needle 300, it can prevent residual blood from oozing and dripping during the process of the needle 300 docking with the needle cap 200 along the straight path.

[0116] In Figures 6 to 8 the implementation manner, the needle heat-sealing and separating device 100 can adopt the eighth method to realize the docking of the needle cap 200 and the needle 300. In Figures 9 to 11 the implementation manner, the needle heat-sealing and separating device 100 can adopt the fourth or fifth or seventh method to realize the docking of the needle cap 200 and the needle 300.

[0117] In some implementation manners, the heat-sealing caliper mechanism 30 can be installed on the driving mechanism 20. For example, in Figures 9 to 11 it, the position of the heat-sealing caliper mechanism 30 in the needle heat-sealing and separating device 100 remains unchanged. For example, the heat-sealing caliper mechanism 30 can be fixedly installed on the second driving component 70, for example, it can be fixedly installed on the first needle driving bracket 72. Another example is in Figures 13 to 14 it, the heat-sealing caliper mechanism 30 can be fixed below the needle clamping mechanism 50'. Another example is in Figures 6 to 8 it, the heat-sealing caliper mechanism 30 can be installed on other driving components of the driving mechanism 20.

[0118] When the heat-sealing caliper mechanism 30 is installed on other driving components of the driving mechanism 20, as Figures 6 to 8As shown, the driving mechanism 20 may further include a third driving component 80. The third driving component 80 drives the heat-sealing caliper mechanism 30 to move back and forth along a third path. The third path, the second path, and the first path are all different, which helps the heat-sealing caliper mechanism 30 move along the third path and away from the needle clamping mechanism 50', so as to reserve enough space for the second driving component 70' to drive the needle clamping mechanism 50' to the front end of the needle heat-sealing and cutting device 100, facilitating the nursing staff to load the needle 300 into the needle clamping mechanism 50'. The third path may include a straight-line path, and the number of straight-line paths may be one section, and this straight-line path may be parallel to the Z-axis direction. For example, in Figure 6 In the implementation mode of, before the nursing staff loads the needle 300 into the needle clamping mechanism 50', the third driving component 80 may first drive the heat-sealing caliper mechanism 30 to move along the straight-line path and away from the needle clamping mechanism 50', and then the second driving component 70' may drive the needle clamping mechanism 50' to move forward to facilitate the nursing staff to load the needle 300.

[0119] The structure of the third driving component 80 may be the same as that of the first-direction needle driving unit 71'. For example, the third driving component 80 may also be a linear guideway and slide table module. The heat-sealing caliper mechanism 30 may be connected to the slide table 81 of the linear guideway and slide table module, and the linear guideway and slide table module can realize the movement of the heat-sealing caliper mechanism 30 along the straight-line path.

[0120] In addition to the above-mentioned driving components, the driving mechanism 20 may further include other driving components to achieve other functions. For example, please refer to Figure 8 , the driving mechanism 20 may further include a rotary driving component 90'. The rotary driving component 90' drives the needle clamping mechanism 50' to rotate back and forth, which can not only break the heat-sealed part between the blood transfusion tube 400 and the needle 300 to separate the needle 300 from the blood transfusion tube 400, but also helps to rotate the needle 300 to the entrance of the recycling box 500 after separating the needle 300 from the blood transfusion tube 400, facilitating the subsequent release of the needle 300 by the needle clamping mechanism 50' so that the needle 300 together with the needle cap 200 can fall into the recycling box 500. The rotary driving component 90' may also adopt a rotary driving module, and the output end 95 of the rotary driving component 90' may be directly hinged to the needle clamping mechanism 50' to drive the needle clamping mechanism 50' to rotate.

[0121] When the driving mechanism 20 includes the rotary driving component 90', the heat-sealing caliper mechanism 30 may be fixed below the needle clamping mechanism 50'. As Figures 13 to 14 shown, the heat-sealing caliper mechanism 30 may be fixedly connected to the body of the rotary driving component 90'. Figure 13 shows the postures of the heat-sealing caliper mechanism 30 and the rotary driving component 90' when the heat-sealing caliper mechanism 30 heat-seals the blood transfusion tube 400;Figure 14 It shows the postures of the heat-sealing caliper mechanism 30 and the rotary drive assembly 90' when the rotary drive assembly 90' twists off the heat-sealed joint of the blood transfusion tube 400 and the needle 300 and rotates the needle 300 to the entrance of the recycling box 500. During the separation process of the needle 300 and the blood transfusion tube 400, the heat-sealing caliper mechanism 30 also functions to clamp the blood transfusion tube 400.

[0122] Please refer to Figure 15 and Figure 16 , the needle cap clamping mechanism 40' may include a clamping bracket 41', a first clamping member 42' and a second clamping member 43'. The first clamping member 42' and the second clamping member 43' are installed on the clamping bracket 41'. The clamping bracket 41' may be connected to the drive mechanism 20. For example, the clamping bracket 41' may be fixedly connected to the corresponding drive assembly through fasteners such as bolts and screws. A clamping space 44' is formed between the first clamping member 42' and the second clamping member 43', and the clamping space 44' can be used to clamp the needle cap 200. The needle cap 200 may be installed axially within the clamping space 44'.

[0123] At least one of the first clamping member 42' and the second clamping member 43' is slidably installed on the clamping bracket 41'. For example, in the fourth structural case, the second clamping member 43' is slidably installed on the clamping bracket 41'; for another example, in the fifth structural case, the first clamping member 42' is slidably installed on the clamping bracket 41'; for another example, in the sixth structural case, the first clamping member 42' is slidably installed on the clamping bracket 41', and the second clamping member 43' is slidably installed on the clamping bracket 41'.

[0124] The needle cap clamping mechanism 40' may further include a clamping transmission assembly 45' and a clamping drive motor 46'. The clamping transmission assembly 45' is used to transmit the power of the clamping drive motor 46' to the clamping members, so that at least one of the first clamping member 42' and the second clamping member 43' slides relative to the clamping bracket 41', thereby changing the size of the clamping space 44', and realizing that the needle cap clamping mechanism 40' selectively is in a clamping state or a released state. Among them, the clamping space 44' of the needle cap clamping mechanism 40' in the clamping state is smaller than the clamping space 44' of the needle cap clamping mechanism 40' in the released state. The needle cap clamping mechanism 40' in the clamping state can clamp the needle cap 200, as Figure 15 shown; the needle cap clamping mechanism 40' in the released state can release the needle cap 200, as Figure 16 shown.

[0125] The needle cap clamping mechanism 40' of the embodiment of the present application is described by taking the fourth structural case as an example. For example, please refer to Figure 15 and Figure 16, the first clamping member 42' can be fixedly connected to the clamping bracket 41'. The first clamping member 42' can be fixed to the clamping bracket 41' by fasteners such as bolts and screws. Alternatively, the first clamping member 42' and the clamping bracket 41' can be an integrally formed structure.

[0126] Since the second clamping member 43' is slidably mounted on the clamping bracket 41', the clamping transmission assembly 45' can be connected between the second clamping member 43' and the clamping drive motor 46'. The clamping drive motor 46' drives the clamping transmission assembly 45' to move, so as to drive the second clamping member 43' to selectively move towards or away from the first clamping member 42', thereby changing the size of the clamping space 44', and realizing that the needle cap clamping mechanism 40' is selectively in the clamping state or the loosening state.

[0127] During the process of the needle cap clamping mechanism 40' clamping the needle cap 200, the clamping drive motor 46' can drive the second clamping member 43' to move away from the first clamping member 42' through the clamping transmission assembly 45', so that the needle cap clamping mechanism 40' is in the loosening state. Then, the needle cap 200 can be axially mounted in the clamping space 44' of the needle cap clamping mechanism 40'. Finally, the clamping drive motor 46' can drive the second clamping member 43' to move towards the first clamping member 42' through the clamping transmission assembly 45', so that the needle cap clamping mechanism 40' is in the clamping state, thereby clamping the needle cap 200. After the needle cap 200 is docked with the needle 300, the needle cap clamping mechanism 40' can be in the loosening state, so that the needle cap 200 can be loosened.

[0128] When the needle cap 200 is axially mounted in the clamping space 44' of the needle cap clamping mechanism 40', please refer to Figure 16 , the needle cap clamping mechanism 40' can further include a limiting member 49. The limiting member 49 can be connected to the first clamping member 42' or the second clamping member 43'. In Figure 16 the embodiment, the limiting member 49 is fixedly connected to the first clamping member 42'. The limiting member 49 can limit the movement of the needle cap 200 along the axial direction of the needle cap 200, thereby avoiding the situation that the subsequent docking between the needle cap 200 and the needle 300 is not in place due to the nursing staff overloading the needle cap 200 into the needle cap clamping mechanism 40'.

[0129] The needle cap clamping mechanism 40' may further include a sensor 401, and the sensor 401 may be mounted on the clamping bracket 41'. The sensor 401 is used to detect whether the needle cap 200 is properly loaded into the clamping space 44'. Before the needle cap 200 is docked with the needle 300, the controller of the needle hot-sealing and disconnecting device 100 may control the first driving assembly 60' not to drive the needle cap clamping mechanism 40' to move when the sensor 401 does not detect that the needle cap 200 is loaded into the clamping space 44', thereby avoiding the no-load operation of the needle cap clamping mechanism 40'. In addition, during the docking process of the needle cap 200 and the needle 300, the controller of the needle hot-sealing and disconnecting device 100 may also control the first driving assembly 60' to drive the needle cap clamping mechanism 40' to perform the docking operation again when the sensor 401 detects that the needle cap 200 has not disengaged from the clamping space 44', which helps to reduce the situation where the needle cap 200 is not covered on the needle 300. The sensor 401 may be of types such as fiber optic sensors and photoelectric sensors.

[0130] An embodiment of the present invention further provides a blood collection device (not shown in the figure), and the blood collection device includes a housing and the needle hot-sealing and disconnecting device 100 of any of the above embodiments, and the needle hot-sealing and disconnecting device 100 is installed on the housing.

[0131] In the blood collection device provided by the embodiment of the present invention, at least one of the first clamping member 420' and the second clamping member 430' is slidably mounted on the clamping bracket 410'. A clamping space 440' is defined between the first clamping member 420' and the second clamping member 430'. The clamping space 440' is used to accommodate the needle 300 loaded along the installation direction, so that the needle clamping mechanism 50' can clamp or release the needle 300 by adjusting the size of the clamping space 440'. Thus, it can replace the operation of a caregiver holding the needle by hand, avoiding both the caregiver being stabbed by the needle 300 and the influence on the heat sealing of the heat sealing caliper mechanism 30 due to the caregiver's hand shaking. Since the installation direction is parallel to the axial direction of the needle 300, the needle clamping mechanism 50' can be adapted to a device with a needle inlet opened on the side. On the one hand, it is convenient for the caregiver to load the needle 300 into the clamping space 440' along the axial direction of the needle 300, and the needle inlet of the device can be matched with the diameter of the needle 300 without being set too large, avoiding the needle inlet of the device having a too long length for accommodating a needle loaded along the radial direction of the needle 300, resulting in a too large opening area of the needle inlet that is prone to dust accumulation and inconvenient for the caregiver's daily cleaning. On the other hand, since the caregiver's hand is always outside the clamping space 440' during the process of holding the needle 300 and loading it into the clamping space 440' along the installation direction, compared with the way of loading along the radial direction of the needle, the risk of the first clamping member 420' and the second clamping member 430' pinching the caregiver can be effectively reduced. In addition, the limiting member 49' of the needle clamping mechanism 50' restricts the axial movement of the needle 300, which can prevent the caregiver from loading the needle 300 too shallowly resulting in incomplete loading or overloading the needle 300 into the clamping space 440', thus avoiding the needle 300 not being clamped due to incomplete loading or the needle 300 directly falling off due to overloading, and avoiding the heat sealing position of the blood transfusion tube 400 being too far from the needle 300, and also avoiding the needle 300 carrying an overly long remaining blood transfusion tube 400 after being separated from the blood transfusion tube 400, which affects the subsequent needle recycling.

[0132] In the present invention, unless otherwise clearly defined or limited, terms such as "installation", "connection", "fixation", etc. shall 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 a direct connection, or indirectly connected through an intermediate medium, or the internal communication of two components, or only surface contact, or surface contact connection through an intermediate medium. 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.

[0133] In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be construed as specific or special structures. The descriptions of "some embodiments", "other embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in the present invention and the features of different embodiments or examples.

[0134] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A needle clamping mechanism, characterized in that, it includes: a clamping bracket; a first clamping member and a second clamping member, at least one of the first clamping member and the second clamping member is slidably mounted on the clamping bracket, a clamping space is defined between the first clamping member and the second clamping member, and the clamping space is used to accommodate a needle inserted along the installation direction, and the installation direction is parallel to the axial direction of the needle; and a limiting member, the extending direction of the limiting member is from the first clamping member towards the second clamping member, one end of the limiting member faces the first clamping member, the other end of the limiting member faces the second clamping member, and the limiting member restricts the movement of the needle along the installation direction; The needle clamping mechanism further includes a needle engaging member, the needle engaging member protrudes from the surface of the second clamping member facing the clamping space, and the needle engaging member of the clamping mechanism in the clamping state is clamped in the card slot of the needle to restrict the movement of the needle; The limiting member is connected to the second clamping member, the limiting member protrudes from the surface of the second clamping member facing the clamping space, and the height of the limiting member protruding from the second clamping member is greater than the height of the needle engaging member protruding from the second clamping member; The second clamping member includes a stop block and a slider, the stop block protrudes from the surface of the slider facing the clamping space, and the slider is slidably mounted on the clamping bracket.

2. The needle clamping mechanism according to claim 1, characterized in that, the second clamping member is slidably mounted on the clamping bracket.

3. The needle clamping mechanism according to claim 1, characterized in that, the first clamping member is fixedly connected to the clamping bracket.

4. The needle clamping mechanism according to claim 3, characterized in that, the clamping bracket includes a clamping member base and a slider base connected to each other, the first clamping member is fixedly connected to the clamping member base, the slider is slidably connected to the slider base, and the stop block is spaced apart from the clamping member base.

5. The needle clamping mechanism according to claim 4, characterized in that, the slider base is provided with a guide hole, the direction in which the guide hole penetrates the slider base is parallel to the direction of the second clamping member towards the first clamping member, and the slider is slidably inserted through the guide hole.

6. The needle clamping mechanism according to claim 1, characterized in that, the first clamping member is fixedly connected to the clamping bracket, and the second clamping member is slidably mounted on the clamping bracket; The clamping mechanism further includes a clamping drive motor and a clamping transmission assembly, the clamping transmission assembly is connected between the second clamping member and the clamping drive motor, and the clamping drive motor drives the clamping transmission assembly to move so as to drive the second clamping member to selectively move towards or away from the first clamping member.

7. The needle clamping mechanism according to claim 6, characterized in that, The clamping transmission assembly includes a crank and a connecting rod. The crank is connected to the output shaft of the clamping drive motor. The connecting rod is hinged between the crank and the second clamping member respectively. The hinged position of the connecting rod and the crank deviates from the rotation axis of the crank. The clamping drive motor drives the crank to move so as to drive the second clamping member to move.

8. The needle clamping mechanism according to claim 6, wherein, the needle clamping mechanism further includes a sensor and a controller. The sensor is installed on the first clamping member. The sensor is used for detecting the clamping space. The controller is electrically connected to the sensor and the clamping drive motor respectively. The controller controls the clamping drive motor according to the detection result of the sensor.

9. A needle heat-sealing and severing device, wherein, it includes: the needle clamping mechanism according to any one of claims 1-8; a heat-sealing caliper mechanism, which is used for heat-sealing the blood transfusion tube connected to the needle; and a drive mechanism, which is connected to the needle clamping mechanism and drives the needle clamping mechanism to move relative to the heat-sealing caliper mechanism to sever the needle and the blood transfusion tube after heat-sealing.

10. A blood collection device, wherein, it includes: a housing; and the needle heat-sealing and severing device according to claim 9, and the needle heat-sealing and severing device is installed on the housing.

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