CN212503910U - Blood collection tube cap pulling device - Google Patents

Abstract

The utility model discloses a heparin tube pulls out cap device, including centre gripping pipe and tube cap, centre gripping pipe top is uncovered, the tube cap can dismantle the lid connect in centre gripping pipe top, the device of uncapping has in the tube cap, clamping device has in the centre gripping pipe, the centre gripping pipe with the inner chamber that the tube cap lid formed after connecing is used for placing the heparin tube, clamping device be used for with place in the centre gripping pipe with the pipe shaft of the heparin tube in the tube cap presss from both sides tightly fixedly, the device of uncapping be used for with place in the centre gripping pipe with the tube cap of the heparin tube in the tube cap is opened. The utility model provides a heparin tube pulls out cap device, the tube cap is opened conveniently, laborsaving, and the brute force leads to blood spill when can avoiding the tube cap to open, and it is safe to open the cap.

Description

Blood collection tube cap pulling device

Technical Field

The utility model relates to a medical treatment laboratory paraphernalia field especially relates to heparin tube pulls out cap device.

Background

The vacuum blood collecting tube is one kind of disposable negative pressure glass tube capable of taking blood quantitatively, and has the principle of pre-pumping blood collecting tube with cap into different vacuum degrees, utilizing the negative pressure to collect venous blood quantitatively and being used widely in blood detection. In actual work, the blood sample of extraction has because the detection project is different, and the detection requirement is different, need divide a blood sample to different containers in, and is called "branch blood", divides the blood in-process and need open the tube cap of heparin tube, makes tube cap and body of tubes separation, adopts manual mode to open the tube cap now often, and the mode that current manual opened the tube cap mainly has following problem:

1. because the blood sampling tube has negative pressure, the tube cap is difficult to open;

2. because both hands need exert force to two opposite directions when opening the pipe cap and the dynamics is difficult to control, easily make intraductal blood spill, cause biological safety risk.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a heparin tube pulls out cap device, the tube cap is opened conveniently, laborsaving, can avoid the tube cap to lead to the blood spill too hard when opening, and it is safe to open the cap.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model discloses a heparin tube pulls out cap device, including centre gripping pipe and tube cap, centre gripping pipe top is uncovered, the tube cap can dismantle the lid connect in centre gripping pipe top, the device of uncapping has in the tube cap, clamping device has in the centre gripping pipe, the centre gripping pipe with the inner chamber that the tube cap lid formed after connecing is used for placing the heparin tube, clamping device be used for with place in the centre gripping pipe with the body of a tube of the heparin tube in the tube cap presss from both sides tightly fixedly, the device of uncapping be used for with place in the centre gripping pipe with the tube cap of the heparin tube in the tube cap is opened.

The utility model has the advantages that: open the tube cap, place the heparin tube that will open the tube cap in the centre gripping intraductal in, with the tube cap lid in centre gripping pipe top and centre gripping pipe fixed connection, through the intraductal clamping device of centre gripping with the pipe shaft clamp of heparin tube fixed, then open the tube cap of heparin tube by the device of uncapping again, the tube cap is opened conveniently, laborsaving, can avoid the tube cap to lead to the blood spill too hard when opening, and it is safe to open the cap.

Further, clamping device includes first clamp piece, first control mechanism, the second presss from both sides tight piece and second control mechanism, first clamp piece with first control mechanism connects, the second presss from both sides tight piece with second control mechanism connects, first clamp piece with the second presss from both sides tight piece and sets up relatively, first control mechanism with second control mechanism all set up in on the centre gripping pipe, first control mechanism is used for controlling first clamp piece is followed the radial reciprocating motion of centre gripping pipe, second control mechanism is used for controlling the second presss from both sides tight piece is followed the radial reciprocating motion of centre gripping pipe.

The beneficial effect of adopting the further scheme is that: when needing the centre gripping pipe shaft, make first clamp piece and the tight piece of second clamp respectively through first control mechanism and second control mechanism and remove to the centre, press from both sides the pipe shaft tightly, put into the centre gripping pipe with the heparin tube or when taking out the heparin tube from the centre gripping intraductal, first control mechanism and second control mechanism make first clamp piece and the tight piece of second clamp draw close to centre gripping pipe both sides inner wall respectively, leave the space of the pipe shaft of placing the heparin tube or loosen the pipe shaft of heparin tube, the heparin tube presss from both sides tightly and releases convenient operation.

Furthermore, the outer walls of two opposite sides of the clamping pipe are respectively provided with a first piston cavity and a second piston cavity,

the first control mechanism comprises a first piston, a first button, a first transmission rod and a first return spring, the first piston is arranged in the first piston cavity and is in sliding fit with the inner wall of the first piston cavity, the first return spring is arranged in the first piston cavity, two ends of the first return spring are respectively abutted against the end part of the first piston facing the inner cavity of the clamping tube and the side surface of the first piston cavity close to the inner cavity of the clamping tube, the end part of the first piston far away from the inner cavity of the clamping tube is fixedly connected with the first button, the first button penetrates out of the side surface of the first piston cavity far away from the inner cavity of the clamping tube, the first button is in sliding fit with the side surface of the first piston cavity far away from the inner cavity of the clamping tube, one end of the first transmission rod is fixedly connected with the end part of the first piston facing the inner cavity of the clamping tube, the other end of the first transmission rod penetrates out of the side surface of the first piston cavity, which is close to the inner cavity of the clamping pipe, and then is fixedly connected with the first clamping piece, and the first transmission rod is in sliding fit with the side surface of the first piston cavity, which is close to the inner cavity of the clamping pipe;

the second control mechanism comprises a second piston, a second button, a second transmission rod and a second return spring, the second piston is arranged in the second piston cavity and is in sliding fit with the inner wall of the second piston cavity, the second return spring is arranged in the second piston cavity, two ends of the second return spring are respectively abutted against the end part of the second piston facing the inner cavity of the clamping tube and the side surface of the second piston cavity close to the inner cavity of the clamping tube, the end part of the second piston far away from the inner cavity of the clamping tube is fixedly connected with the second button, the second button penetrates out of the side surface of the second piston cavity far away from the inner cavity of the clamping tube, the second button is in sliding fit with the side surface of the second piston cavity far away from the inner cavity of the clamping tube, one end of the second transmission rod is fixedly connected with the end part of the second piston facing the inner cavity of the clamping tube, the other end of the second transmission rod penetrates out of the side face, close to the inner cavity of the clamping pipe, of the second piston cavity and then is fixedly connected with the second clamping piece, and the second transmission rod is in sliding fit with the side face, close to the inner cavity of the clamping pipe, of the second piston cavity.

The beneficial effect of adopting the further scheme is that: the first button and the second button are pressed to enable the first piston and the second piston to move towards the middle in the first piston cavity and the second piston cavity respectively, the first clamping piece and the second clamping piece are pushed to clamp towards the middle through transmission of the first transmission rod and the second transmission rod respectively, after the first button and the second button are loosened, the first piston and the second piston are under the restoring forces of the first restoring spring and the second restoring spring to enable the first clamping piece and the second clamping piece to be close to the inner walls of the two sides of the clamping tube respectively, the clamped blood collection tube is loosened, the first button and the second button can be pressed while the clamping tube is held by a hand, and the tube body of the blood collection tube in the clamping tube is clamped by the first clamping piece and the second clamping piece.

Further, the clamping surfaces of the first clamping piece and the second clamping piece are both concave cambered surfaces.

The beneficial effect of adopting the further scheme is that: the tubular blood collection tube is convenient to clamp, and the blood collection tube is prevented from sliding when being clamped.

Further, the tube cover is provided with an inner cavity, the lower part of the tube cover is open, the lower part of the tube cover is detachably connected with the top of the clamping tube, the cover opening device comprises a claw, an axial reciprocating mechanism, a third return spring and a claw pressing mechanism, the axial reciprocating mechanism is arranged at the top of the inner cavity of the tube cover, the hook claw is arranged at the bottom of the axial reciprocating mechanism in an openable and closable manner, two ends of the third return spring are respectively and fixedly connected with the bottom of the axial reciprocating mechanism and the claw, the third return spring is used for expanding the hook claw, the hook claw pressing mechanism is arranged on the side wall of the pipe cover, the claw clamping mechanism is used for overcoming the elasticity of the third return spring to enable the claw to be folded, after the hook claw is folded, the hook claw is used for abutting against the bottom of a tube cap of a blood collection tube, and the axial reciprocating mechanism is used for controlling the hook claw to axially reciprocate along the clamping tube.

The beneficial effect of adopting the further scheme is that: after the blood collection tube is placed in the clamping tube and the tube cap is covered and connected, the hook claw is kept in an open state under the elastic force of the third return spring, the axial reciprocating mechanism enables the hook claw to move downwards, the hook claw part is arranged below the tube cap of the blood collection tube, the hook claw clamping mechanism enables the hook claw to be folded, the axial reciprocating mechanism enables the hook claw to move upwards, and the hook claw is abutted against the bottom of the tube cap of the blood collection tube, so that the tube cap of the blood collection tube is opened and is convenient to open.

Further, axial reciprocating mechanism bottom fixedly connected with clamp plate, the hook set up in the clamp plate edge, axial reciprocating mechanism is used for controlling the clamp plate is followed centre gripping pipe axial reciprocating motion, when the clamp plate is used for the cap lid of heparin tube to close, pushes down the cap of heparin tube.

The beneficial effect of adopting the further scheme is that: when the tube cap of heparin tube opened the back and need reclose the lid, accessible axial reciprocating mechanism drove the clamp plate that its bottom was connected and pushes down, made the tube cap and the pipe shaft of heparin tube compress tightly, conveniently reclose the heparin tube.

Furthermore, a third piston cavity is arranged at the top of the pipe cover, the axial reciprocating mechanism comprises a third piston, a third transmission rod, a third button and a fourth return spring, the third piston is arranged in the third piston cavity and is in sliding fit with the inner wall of the third piston cavity, the fourth return spring is arranged in the third piston cavity, two ends of the fourth return spring are respectively abutted against the end part, facing the clamping pipe, of the third piston and the side surface, close to the clamping pipe, of the third piston cavity, the end part, far away from the clamping pipe, of the third piston is fixedly connected with one end of the third button, the other end of the third button penetrates out of the side surface, far away from the clamping pipe, of the third piston cavity, the third button is in sliding fit with the side surface, far away from the clamping pipe, of the third piston, the end part, facing the clamping pipe, of the third piston is fixedly connected with one end of the third transmission rod, the other end of the third transmission rod penetrates out of the side face, close to the clamping pipe, of the third piston cavity and then is fixedly connected with the pressing plate, and the third transmission rod is in sliding fit with the side face, close to the clamping pipe, of the third piston cavity.

The beneficial effect of adopting the further scheme is that: pressing the third button makes the third piston remove towards the heparin tube at third piston chamber, makes the hook remove to the tube cap below through the transmission of third transfer line, and hook clamping mechanism makes the hook draw in the back in, and the hook shifts up under the restoring force of fourth answer spring, supports and presses the tube cap, is convenient for open the tube cap, labour saving and time saving, and the tube cap is opened conveniently, and the brute force leads to blood spill when can avoiding the tube cap to open, and it is safe to open the cap.

Furthermore, the hook pressing mechanism comprises a push plate and a control button, the control button is arranged on the side wall of the pipe cover, the push plate is connected with the control button, the push plate is parallel to the axis of the pipe cover, the control button is used for enabling the push plate to reciprocate along the radial direction of the pipe cover and lock the push plate at a first preset position and a second preset position respectively, the push plate is used for pushing the hook to fold, the hook keeps a folded state after the push plate is locked at the first preset position, and the hook keeps an opened state under the action of the third return spring after the push plate is locked at the second preset position.

The beneficial effect of adopting the further scheme is that: the structure is simple, and the claw is convenient to open or close.

Further, the claw is in a single claw shape or a multi-claw shape.

The beneficial effect of adopting the further scheme is that: when the hook claw is in a single-claw shape, the structure is simple, the cost is low, the switching efficiency is high, and when the hook claw is in a multi-claw shape, the pipe cap can be fixed on the hook claw after the pipe cap is opened, so that the pipe cap after being opened is prevented from being lost.

Further, the pipe cover is in threaded connection with the top of the clamping pipe.

The beneficial effect of adopting the further scheme is that: the pipe cover is firmly connected with the top of the clamping pipe, so that the pipe cover is prevented from being stressed and bounced when the pipe cap is opened.

Drawings

Fig. 1 is a schematic view of an embodiment of the present invention in which the hook on which the blood collection tube is placed is a single-claw shape;

fig. 2 is a schematic view of the clamping device of the embodiment of the present invention with the single-claw-shaped hook to clamp the tube body of the blood collection tube;

fig. 3 is a schematic view of the third button of the embodiment of the present invention with the single-claw shaped hook;

FIG. 4 is a schematic view of the push plate of the embodiment of the present invention with the fingers in a single-finger shape after being locked in a first predetermined position;

fig. 5 is a schematic view of the pipe cap opened by the embodiment of the present invention with the single-claw-shaped hook;

fig. 6 is a schematic view of the embodiment of the present invention with the single-claw shaped hook for capping the pipe;

fig. 7 is a schematic view of the pipe cap of the embodiment of the present invention with the multi-claw shaped hook;

in the figure: 1. clamping the tube; 2. a tube cover; 31. a tube body; 32. a pipe cap; 41. a first clamping piece; 42. a first piston chamber; 43. a first button; 44. a first piston; 45. a first drive lever; 46. a first return spring; 51. a second clamping piece; 52. a second piston chamber; 53. a second button; 54. a second piston; 55. a second transmission rod; 56. a second return spring; 61. pressing a plate; 62. a third piston chamber; 64. a third piston; 65. a third transmission rod; 66. a fourth return spring; 71. a hook claw; 72. a third return spring; 81. a control button; 82. pushing the plate;

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings.

As shown in fig. 1-7, the utility model discloses an embodiment of heparin tube cap removal device, including centre gripping pipe 1 and tube cap 2, centre gripping pipe 1 top is uncovered, tube cap 2 can be dismantled the lid and connect in 1 top of centre gripping pipe, the device of uncapping has in the tube cap 2, clamping device has in the centre gripping pipe 1, the inner chamber that forms after centre gripping pipe 1 and the tube cap 2 lid connect is used for placing the heparin tube, clamping device is used for pressing from both sides the body of pipe 31 of the heparin tube of placing in centre gripping pipe 1 and tube cap 2 and presss from both sides fixedly, the device of uncapping is used for opening the tube cap 32 of the heparin tube of placing in centre gripping pipe 1 and tube cap 2.

Specifically, the clamping device comprises a first clamping piece 41, a first control mechanism, a second clamping piece 51 and a second control mechanism, the first clamping piece 41 is connected with the first control mechanism, the second clamping piece 51 is connected with the second control mechanism, the first clamping piece 41 and the second clamping piece 51 are arranged oppositely, the first control mechanism and the second control mechanism are both arranged on the clamping pipe 1, the first control mechanism is used for controlling the first clamping piece 41 to move in a reciprocating mode along the radial direction of the clamping pipe 1, and the second control mechanism is used for controlling the second clamping piece 51 to move in a reciprocating mode along the radial direction of the clamping pipe 1.

Specifically, the outer walls of two opposite sides of the clamping tube 1 are respectively provided with a first piston cavity 42 and a second piston cavity 52;

the first control mechanism comprises a first piston 44, a first button 43, a first transmission rod 45 and a first return spring 46, the first piston 44 is arranged in the first piston cavity 42 and is in sliding fit with the inner wall of the first piston cavity 42, the first return spring 46 is arranged in the first piston cavity 42, two ends of the first return spring 46 are respectively abutted against the end part of the first piston 44 facing the inner cavity of the clamping tube 1 and the side surface of the first piston cavity 42 close to the inner cavity of the clamping tube 1, the end part of the first piston 44 far away from the inner cavity of the clamping tube 1 is fixedly connected with the first button 43, the first button 43 penetrates out of the side surface of the first piston cavity 42 far away from the inner cavity of the clamping tube 1, the first button 43 is in sliding fit with the side surface of the first piston cavity 42 far away from the inner cavity of the clamping tube 1, one end of the first transmission rod 45 is fixedly connected with the end part of the first piston 44 facing the inner cavity of the clamping tube 1, the other end penetrates out of the side surface of the first piston cavity 42, the first transmission rod 45 is in sliding fit with the side surface of the first piston cavity 42 close to the inner cavity of the clamping pipe 1;

the second control mechanism comprises a second piston 54, a second button 53, a second transmission rod 55 and a second return spring 56, the second piston 54 is arranged in the second piston cavity 52 and is in sliding fit with the inner wall of the second piston cavity 52, the second return spring 56 is arranged in the second piston cavity 52, two ends of the second return spring 56 are respectively abutted against the end part of the second piston 54 facing the inner cavity of the clamping tube 1 and the side surface of the second piston cavity 52 close to the inner cavity of the clamping tube 1, the end part of the second piston 54 far away from the inner cavity of the clamping tube 1 is fixedly connected with the second button 53, the second button 53 penetrates out of the side surface of the second piston cavity 52 far away from the inner cavity of the clamping tube 1, the second button 53 is in sliding fit with the side surface of the second piston cavity 52 far away from the inner cavity of the clamping tube 1, one end of the second transmission rod 55 is fixedly connected with the end part of the second piston 54 facing the inner cavity of the clamping tube 1, and the other end of the second transmission rod penetrates out of the side surface of, the second transmission rod 55 is in sliding fit with the side of the second piston chamber 52 close to the inner chamber of the clamping tube 1.

As a further aspect of the above embodiment, the clamping surfaces of the first clamping piece 41 and the second clamping piece 51 are both concave arc surfaces.

Specifically, the tube cover 2 has an inner cavity and an open lower portion, the lower portion of the tube cover 2 is detachably connected with the top of the clamping tube 1, the cover opening device includes a hook 71, an axial reciprocating mechanism, a third restoring spring 72 and a hook pressing mechanism, the axial reciprocating mechanism is disposed at the top of the inner cavity of the tube cover 2, the hook 71 is disposed at the bottom of the axial reciprocating mechanism in an openable and closable manner, two ends of the third restoring spring 72 are respectively fixedly connected with the bottom of the axial reciprocating mechanism and the hook 71, the third restoring spring 72 is used for opening the hook 71, the hook pressing mechanism is disposed on the side wall of the tube cover 2, the hook 71 clamping mechanism is used for overcoming the elastic force of the third restoring spring 72 to fold the hook 71, after the hook 71 is folded, the hook 71 is used for abutting against the bottom of the tube cap 32 of the blood collection tube, and the axial reciprocating mechanism is used for controlling the hook 71 to axially reciprocate along the.

Specifically, the bottom of the axial reciprocating mechanism is fixedly connected with a pressing plate 61, a hook 71 is arranged on the edge of the pressing plate 61, the hook 71 can be hinged to the edge of the pressing plate 61, the axial reciprocating mechanism is used for controlling the pressing plate 61 to axially reciprocate along the clamping tube 1, and when the pressing plate 61 is used for covering the tube cap 32 of the blood collection tube, the tube cap 32 of the blood collection tube is pressed downwards.

Specifically, the top of the tube cap 2 is provided with a third piston cavity 62, the axial reciprocating mechanism comprises a third piston 64, a third transmission rod 65, a third button and a fourth return spring 66, the third piston 64 is arranged in the third piston cavity 62 and is in sliding fit with the inner wall of the third piston cavity 62, the fourth return spring 66 is arranged in the third piston cavity 62, two ends of the fourth return spring 66 are respectively abutted to the end portion, facing the clamping tube 1, of the third piston 64 and the side surface, close to the clamping tube 1, of the third piston cavity 62, the end portion, far away from the clamping tube 1, of the third piston 64 is fixedly connected with one end of the third button, the other end of the third button penetrates through the side surface, far away from the clamping tube 1, of the third button and the third piston cavity 62 are in sliding fit, the end portion, facing the clamping tube 1, of the third piston 64 is fixedly connected with one end of the third transmission rod 65, and the other end of the third transmission rod 65 penetrates out of the side surface, close The third transmission rod 65 is in sliding fit with the side of the third piston chamber 62 close to the clamping tube 1. The top of the tube cover 2 can also be provided with a threaded through hole, the axial reciprocating mechanism is a bolt, the bottom of the bolt is provided with a pressure plate 61, and the pressure plate 61 can move axially and reciprocally along the clamping tube 1 by the forward and reverse rotation of the bolt.

Specifically, the hook pressing mechanism comprises a push plate 82 and a control button 81, the control button 81 is arranged on the side wall of the tube cover 2, the push plate 82 is connected with the control button 81, the push plate 82 is parallel to the axis of the tube cover 2, the control button 81 is used for enabling the push plate 82 to reciprocate along the radial direction of the tube cover 2 and lock at a first preset position and a second preset position respectively, the push plate 82 is used for pushing the hook 71 to fold, after the push plate 82 locks at the first preset position, the hook 71 keeps a folded state, after the push plate 82 locks at the second preset position, the hook 71 keeps an unfolded state under the action of the third return spring 72, and the control button 81 can adopt the existing ball pen or neutral pen button structure.

The claw 71 can be in a single-claw shape or a multi-claw shape, the single-claw shape and the multi-claw shape claws 71 are both in the existing structure, and the multi-claw shape claws 71 can enable the independent claws to be communicated through the existing linkage structure.

As the preferable scheme of the above embodiment, the pipe cover 2 is in threaded connection with the top of the clamping pipe 1, and the pipe cover 2 and the top of the clamping pipe 1 can also be clamped.

When the blood collection tube is used, the tube cover 2 is opened firstly, the blood collection tube is placed into the clamping tube 1, the tube cover 2 is covered and connected on the top of the clamping tube 1, the clamping tube 1 is held by a hand, the first button 43 and the second button 53 are pressed down simultaneously during holding, the first clamping piece 41 and the second clamping piece 51 clamp the tube body 31 tightly, the thumb of the hand holding the clamping tube 1 presses the third button, the hook claw 71 moves downwards to the lower part of the tube cap 32, the forefinger of the hand holding the clamping tube 1 presses the control button 81, the push plate 82 moves to the first preset position and then is locked, the hook claw 71 is folded, the third button is released, the hook claw 71 rebounds under the restoring force of the fourth restoring spring 66, the hook claw 71 moves upwards to press the bottom of the tube cap 32, the tube cap 32 is opened, when the tube cap 32 and the tube body 31 of the blood collection tube need to be covered again, the third button is pressed down, the press plate 61 presses the tube cap 32 downwards to enable the tube cap 32 and the tube body 31 to be, the opening and the closing of the pipe cap 32 can be operated by one hand, and the operation is safe and convenient.

Of course, the present invention may have other embodiments, and those skilled in the art may make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the appended claims.

Claims (10)

1. The utility model provides a heparin tube pulls out cap device which characterized in that: including centre gripping pipe (1) and tube cap (2), centre gripping pipe (1) top is uncovered, can dismantle lid connect in tube cap (2) top centre gripping pipe (1), the device of uncapping has in tube cap (2), clamping device has in centre gripping pipe (1), centre gripping pipe (1) with tube cap (2) lid connects the inner chamber that the back formed and is used for placing the heparin tube, clamping device is used for will placing in centre gripping pipe (1) with tube cap (32) of the heparin tube in tube cap (2) are pressed from both sides the fastening and are fixed, the device of uncapping is used for will placing in centre gripping pipe (1) with tube cap (32) of the heparin tube in tube cap (2) are opened.

2. A blood collection tube cap removing device according to claim 1, wherein: clamping device includes first clamp piece (41), first control mechanism, second clamp piece (51) and second control mechanism, first clamp piece (41) with first control mechanism connects, second clamp piece (51) with second control mechanism connects, first clamp piece (41) with second clamp piece (51) sets up relatively, first control mechanism with second control mechanism all set up in on centre gripping pipe (1), first control mechanism is used for control first clamp piece (41) are followed centre gripping pipe (1) radial reciprocating motion, second control mechanism is used for control second clamp piece (51) are followed centre gripping pipe (1) radial reciprocating motion.

3. A blood collection tube cap removing device according to claim 2, wherein: the outer walls of two opposite sides of the clamping pipe (1) are respectively provided with a first piston cavity (42) and a second piston cavity (52),

the first control mechanism comprises a first piston (44), a first button (43), a first transmission rod (45) and a first return spring (46), the first piston (44) is arranged in the first piston cavity (42) and is in sliding fit with the inner wall of the first piston cavity (42), the first return spring (46) is arranged in the first piston cavity (42), two ends of the first return spring (46) are respectively abutted against the end part, facing the inner cavity of the clamping tube (1), of the first piston (44) and the side surface, close to the inner cavity of the clamping tube (1), of the first piston cavity (42), the end part, far away from the inner cavity of the clamping tube (1), of the first piston (44) is fixedly connected with the first button (43), and the first button (43) penetrates out of the side surface, far away from the inner cavity of the clamping tube (1), of the first piston cavity (42), the first button (43) is in sliding fit with the side face, far away from the inner cavity of the clamping pipe (1), of the first piston cavity (42), one end of the first transmission rod (45) is fixedly connected with the end, facing the inner cavity of the clamping pipe (1), of the first piston (44), the other end of the first transmission rod penetrates out of the side face, close to the inner cavity of the clamping pipe (1), of the first piston cavity (42) and then is fixedly connected with the first clamping piece (41), and the first transmission rod (45) is in sliding fit with the side face, close to the inner cavity of the clamping pipe (1), of the first piston cavity (42);

the second control mechanism comprises a second piston (54), a second button (53), a second transmission rod (55) and a second return spring (56), the second piston (54) is arranged in the second piston cavity (52) and is in sliding fit with the inner wall of the second piston cavity (52), the second return spring (56) is arranged in the second piston cavity (52), two ends of the second return spring (56) are respectively abutted to the end part, facing the inner cavity of the clamping tube (1), of the second piston (54) and the side surface, close to the inner cavity of the clamping tube (1), of the second piston cavity (52), the end part, far away from the inner cavity of the clamping tube (1), of the second piston (54) is fixedly connected with the second button (53), and the second button (53) penetrates out of the side surface, far away from the inner cavity of the clamping tube (1), of the second piston cavity (52), the second button (53) is far away from the second piston cavity (52) and is in sliding fit with the side surface of the inner cavity of the clamping pipe (1), one end of a second transmission rod (55) faces the end part of the inner cavity of the clamping pipe (1) through the second piston (54), the other end of the second transmission rod is close to the second piston cavity (52), the side surface of the inner cavity of the clamping pipe (1) penetrates out of the second piston cavity and is fixedly connected with the second clamping piece (51), and the second transmission rod (55) is close to the side surface of the inner cavity of the clamping pipe (1) through the second piston cavity (52).

4. A blood collection tube cap removing device according to claim 2, wherein: the clamping surfaces of the first clamping piece (41) and the second clamping piece (51) are both concave cambered surfaces.

5. A blood collection tube cap removing device according to claim 1, wherein: the pipe cover (2) is provided with an inner cavity and the lower part of the pipe cover is open, the lower part of the pipe cover (2) is detachably connected with the top of the clamping pipe (1), the cover opening device comprises a claw (71), an axial reciprocating mechanism, a third restoring spring (72) and a claw pressing mechanism, the axial reciprocating mechanism is arranged at the top of the inner cavity of the pipe cover (2), the claw (71) is arranged at the bottom of the axial reciprocating mechanism in an openable and closable manner, two ends of the third restoring spring (72) are respectively fixedly connected with the bottom of the axial reciprocating mechanism and the claw (71), the third restoring spring (72) is used for enabling the claw (71) to be opened, the claw pressing mechanism is arranged on the side wall of the pipe cover (2), the claw (71) clamping mechanism is used for overcoming the elasticity of the third restoring spring (72) to enable the claw (71), and the claw (71) is folded, the hook claw (71) is used for abutting against the bottom of a tube cap (32) of the blood collection tube, and the axial reciprocating mechanism is used for controlling the hook claw (71) to axially reciprocate along the clamping tube (1).

6. A blood collection tube cap removing device according to claim 5, wherein: axial reciprocating mechanism bottom fixedly connected with clamp plate (61), hook (71) set up in clamp plate (61) edge, axial reciprocating mechanism is used for control clamp plate (61) are followed centre gripping pipe (1) axial reciprocating motion, when clamp plate (61) are used for tub cap (32) lid of blood sampling pipe, push down tub cap (32) of blood sampling pipe.

7. A blood collection tube cap removing device according to claim 6, wherein: the top of the pipe cover (2) is provided with a third piston cavity (62), the axial reciprocating mechanism comprises a third piston (64), a third transmission rod (65), a third button and a fourth return spring (66), the third piston (64) is arranged in the third piston cavity (62) and is in sliding fit with the inner wall of the third piston cavity (62), the fourth return spring (66) is arranged in the third piston cavity (62), two ends of the fourth return spring (66) are respectively abutted against the end part of the third piston (64) facing the clamping pipe (1) and the side surface of the third piston cavity (62) close to the clamping pipe (1), the end part of the third piston (64) far away from the clamping pipe (1) is fixedly connected with one end of the third button, and the other end of the third button penetrates through the third piston cavity (62) and is far away from the side surface of the clamping pipe (1), the third button with third piston chamber (62) is kept away from the side sliding fit of centre gripping pipe (1), third piston (64) orientation the tip of centre gripping pipe (1) with the one end fixed connection of third transfer line (65), the other end of third transfer line (65) is followed third piston chamber (62) are close to the side of centre gripping pipe (1) wear out the back with clamp plate (61) fixed connection, third transfer line (65) with third piston chamber (62) are close to the side sliding fit of centre gripping pipe (1).

8. A blood collection tube cap removing device according to claim 5, wherein: the hook claw pressing mechanism comprises a push plate (82) and a control button (81), the control button (81) is arranged on the side wall of the pipe cover (2), the push plate (82) is connected with the control button (81), the push plate (82) is parallel to the axis of the pipe cover (2), the control button (81) is used for enabling the push plate (82) to do reciprocating motion along the radial direction of the pipe cover (2) and to be locked at a first preset position and a second preset position respectively, the push plate (82) is used for pushing the hook claws (71) to fold, the push plate (82) enables the hook claws (71) to be kept in a folded state after being locked at the first preset position, and the hook claws (71) are kept in an unfolded state under the action of a third return spring (72) after the push plate (82) is locked at the second preset position.

9. A blood collection tube cap removing device according to claim 5, wherein: the claw (71) is in a single claw shape or a multi-claw shape.

10. A blood collection tube cap removing device according to any one of claims 1-9, wherein: the pipe cover (2) is in threaded connection with the top of the clamping pipe (1).

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