CN211675705U - Micro-injection pump propelling structure - Google Patents

Abstract

The utility model discloses a micro-injection pump propulsion structure, which comprises an injection pump shell and an injection tube arranged on the injection pump shell, wherein a piston rod is arranged in the injection tube, the injection shell is provided with a propulsion mechanism for pushing the piston rod, the propulsion mechanism comprises a push handle and a telescopic component, the telescopic component comprises a sleeve, a telescopic rod and an elastic restoring piece, the sleeve is sheathed outside the telescopic rod, the telescopic rod is fixedly provided with a drive plate, and the elastic restoring piece is arranged between the drive plate and the sleeve; the telescopic link is located the inside one end of sleeve and is provided with the butt piece that a plurality of slopes set up, and a plurality of butt pieces use the axis of telescopic link to set up as central symmetry, and the one end that the telescopic link was kept away from to a plurality of butt pieces is kept away from each other, and the one end of butt piece is articulated with the telescopic link, the other end and muffjoint, and the telescopic link is provided with and is used for driving the drive assembly that the butt piece is close to each other or keeps away from. It has the advantage that can adjust the distance between pushing handle and the injection cylinder.

Description

Micro-injection pump propelling structure

Technical Field

The utility model relates to a micro-infusion pump technical field, in particular to micro-injection pump propulsion structure.

Background

The micro-injection pump is a device which is convenient for continuously inputting the micro-amount of liquid medicine into a human body through an injector, the injector is arranged on the shell of the micro-injection pump through a needle cylinder of the injector, and an upper flange of the injector is embedded and clamped in an embedding groove of the shell so as to be positioned on the shell of the micro-injection pump; the piston of the injector is connected with the propelling mechanism of the micro-injection pump and continuously injects the liquid medicine into the human body under the pushing of the propelling mechanism.

The prior patent document with the publication number of CN203881789U discloses a precision injection pump, which comprises a pump body, a stepping motor, a photoelectric switch and a transmission mechanism consisting of a screw rod and a nut which are matched with each other by threads, wherein the screw rod can be connected with the stepping motor through a coupler and rotates along with the screw rod, and the nut is fixed on a bracket which can move along the screw rod; the outer end of a piston rod of the needle cylinder type pump body and a nut are fixed on the same bracket, a pair of horizontal sliding columns parallel to the screw rod are arranged on two sides of the screw rod, and the bracket is also movably connected with the two horizontal sliding columns and can slide along the horizontal sliding columns; and a positioning pin at the lower end of the bracket is used as a trigger mechanism of the photoelectric switch.

Although the precise injection pump realizes sample injection by driving the piston to do reciprocating motion through the motor, the rotary motion of the motor is converted into the linear motion of the nut in a screw-nut transmission mode, and precise micro-sample injection can be realized through electrical control. When the liquid medicine in the needle cylinder type pump body is input, the needle cylinder type pump body needs to be taken down, the support needs to be restored to the original position, and the precise injection pump drives the piston rod of the needle cylinder type pump body to extrude the liquid medicine in the needle cylinder type pump body through the lead screw nut transmission mode support, and when the support needs to be adjusted to be restored to the original position, the support can be driven to move only through a reverse driving motor; the distance between the support and the needle cylinder type pump body can be adjusted only by driving the motor to rotate forwards or reversely, and further the distance between the support and the needle cylinder type pump body is not favorably adjusted.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, the utility model aims to provide a microinjection pump impels structure, it has the advantage that can adjust the distance between pushing handle and the injection tube.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a micro-injection pump propulsion structure comprises an injection pump shell and an injection tube arranged on the injection pump shell, wherein a piston rod is arranged in the injection tube, the injection pump shell is provided with a propulsion mechanism used for pushing the piston rod, the propulsion mechanism comprises a push handle and a telescopic assembly used for driving the push handle to move, the telescopic assembly comprises a sleeve, a telescopic rod and an elastic restoring piece, the sleeve is sleeved outside the telescopic rod, the telescopic rod is fixedly provided with a driving plate used for releasing the natural state of the elastic restoring piece, and the elastic restoring piece is arranged between the driving plate and the sleeve; the telescopic link is located the inside one end of sleeve and is provided with the butt piece that a plurality of slopes set up, and is a plurality of the butt piece uses the axis of telescopic link to set up as central symmetry, and is a plurality of the one end that the telescopic link was kept away from to the butt piece is kept away from each other, the butt piece is the slope setting, the one end and the telescopic link of butt piece are articulated, the other end and muffjoint, the telescopic link is provided with and is used for driving the drive assembly that the butt piece is close to each other or keeps away from.

By adopting the technical scheme, when the medical injector is used, one end of the piston rod, which is far away from the injection tube, is connected with the push handle, the connection state between the abutting block and the sleeve is released through the driving assembly, so that the connection between the telescopic rod and the sleeve is released, the telescopic rod is pushed, the elastic restoring piece is in an unnatural state under the action of the telescopic rod, the telescopic rod drives the push handle to move towards one side close to the injection tube, the pushing of the piston rod on the liquid medicine in the injection tube is realized, and the liquid medicine in the injection tube is conveniently conveyed to a human body; after the injection is finished, the action on the telescopic rod is removed, the elastic restoring piece restores to a natural state, and the elastic restoring piece drives the telescopic rod to restore to the original position; when the fixed distance that pushes away between handle and the injection tube when a certain position, through adjusting the distance between telescopic link and the sleeve, drive when the telescopic link and push away the handle and remove a certain position after, make the butt piece again with muffjoint under drive assembly's effect to realize the rigidity between telescopic link and the sleeve. Therefore, the utility model has the advantages of can adjust the distance between pushing handle and the injection tube.

The utility model discloses further set up to: the telescopic internal perisporium is provided with the external screw thread, the butt piece be provided with the internal thread of sleeve looks adaptation, the one end and the sleeve threaded connection of telescopic link are kept away from to the butt piece.

By adopting the technical scheme, the abutting block is in threaded connection with the sleeve, so that on one hand, the telescopic rod is fixedly connected with the sleeve, and the position relation between the telescopic rod and the sleeve is convenient to limit; on the other hand, strengthen joint strength between butt joint piece and the sleeve, improve the utility model discloses a stability.

The utility model discloses further set up to: the driving assembly comprises a main pull rod and a slave pull rod, the slave pull rod corresponds to the butting blocks one by one, the slave pull rod is fixedly connected with the butting blocks, and one end of the slave pull rod, which is far away from the butting blocks, is fixedly connected with the main pull rod; the butt joint block is provided with a limiting elastic piece used for keeping the connection relation between the butt joint block and the sleeve.

By adopting the technical scheme, the main pull rod is pulled, the main pull rod drives the plurality of auxiliary pull rods to pull the abutting blocks, the limiting elastic piece is in a non-free state, when the main pull rod is released from pulling, the limiting elastic piece returns to a natural state, and the limiting elastic piece drives the abutting blocks to return to a connecting state with the sleeve; through setting up a plurality of from the pull rod and being connected with the main pull rod, be convenient for drive a plurality of piece of butt joint simultaneously and keep away from the sleeve.

The utility model discloses further set up to: the limiting elastic pieces are multiple and correspond to the abutting blocks one to one.

Through adopting above-mentioned technical scheme, increase spacing elastic component and to the limiting displacement of butt joint piece, keep butt joint piece and telescopic connected state, strengthen the stability of butt joint piece in sleeve inside.

The utility model discloses further set up to: the push handle is provided with a limiting ring for fixing the piston rod, and the piston rod is detachably connected with the limiting ring.

By adopting the technical scheme, the end part of the piston rod is conveniently and fixedly connected with the push handle by arranging the limiting ring, so that the push handle drives the piston rod to move; the piston rod and the limiting ring are detachably connected, so that the piston rods with different specifications can be conveniently installed and replaced.

The utility model discloses further set up to: the limiting ring comprises a movable half ring and a fixed half ring, the movable half ring and the fixed half ring are arranged oppositely, the movable half ring comprises a movable end and a fixed end, the distance between the movable end and the fixed half ring is adjustable, and one end, far away from the slave pull rod, of the main pull rod is fixedly connected with the movable end of the movable half ring.

By adopting the technical scheme, the movable end of the movable half ring is moved away from the fixed half ring, so that the distance between the movable half ring and the fixed half ring is increased, and the end part of the piston rod is placed inside the movable half ring and the fixed half ring. Through main pull rod and movable half ring connection, can realize the pulling to main pull rod at the expansion end through removing movable half ring, can realize the drive to the butt piece through controlling movable half ring, convenient operation, simultaneously, when the butt piece comes back the normal position under spacing elastic component's effect, the butt piece counteracts and is acted on main pull rod, main pull rod drives movable half ring and removes to one side that is close to fixed half ring, realizes the lock of fixed half ring and movable half ring to with the piston rod spacing in the inside of spacing ring.

The utility model discloses further set up to: the main pull rod is a pull rope.

Through adopting above-mentioned technical scheme, the pulling rope is flexible material, can play the effect of buffering to the interact power between butt joint piece and the activity semi-ring.

The utility model discloses further set up to: the push handle is fixedly provided with a positioning column which is arranged between the movable semi-ring and the main pull rod, and the pulling rope is fixedly connected with the movable semi-ring after being wound on the positioning column.

Through adopting above-mentioned technical scheme, the pulling rope is kept away from the one end of following the pull rod around connect with activity semi-ring fixed connection behind the reference column, and activity semi-ring sets up in the top of reference column, forms leverage through the pulling rope between butt piece and reference column and the activity semi-ring three, and when driving activity semi-ring, activity semi-ring uses the reference column to drive the motion of pulling rope as the center to drive the motion of butt piece, make the power that acts on activity semi-ring be the minimum power of pulling butt piece motion.

The utility model discloses further set up to: the injection pump shell is provided with a motor for driving the sleeve to rotate, and the sleeve and the output end of the motor rotate coaxially.

Through adopting above-mentioned technical scheme, starter motor, sleeve and the coaxial rotation of motor, sleeve and butt piece threaded connection, butt piece drive the telescopic link and move along telescopic length direction to realize the concertina movement of flexible subassembly.

The utility model discloses further set up to: the injection pump casing is provided with the spacing post that is used for keeping injection tube and injection pump casing connected state, spacing post and injection pump casing rotate to be connected, the groove has been seted up in its one side that is close to the injection tube to spacing post, the mounting groove has been seted up to the diapire of crossing the groove, and spacing post is provided with the contact, the inside that the injection tube and extended to the mounting groove is worn to locate to the one end that the injection tube was kept away from to the contact, be provided with compression elastic component in the mounting groove, the one end of compression elastic component and the diapire butt of mounting groove, the other.

By adopting the technical scheme, the injection tube and the injection pump shell are fixedly connected by arranging the limiting columns and the contacts, the connection state of the injection tube and the injection pump shell is enhanced, and the piston rod can conveniently push out the liquid medicine in the injection tube.

To sum up, the utility model discloses following beneficial effect has: the connection state between the abutting block and the sleeve is released through the driving assembly, so that the connection between the telescopic rod and the sleeve is released, and the telescopic rod drives the push handle to move towards one side close to the injection tube through the arrangement of the telescopic assembly, so that the liquid medicine in the injection tube is pushed by the piston rod, and the liquid medicine in the injection tube is conveniently conveyed to a human body; after the injection is finished, the elastic restoring piece drives the telescopic rod to restore to the original position; when the fixed distance that pushes away between handle and the injection tube when a certain position, through adjusting the distance between telescopic link and the sleeve, drive when the telescopic link and push away the handle and remove a certain position after, make the butt piece again with muffjoint under drive assembly's effect to realize the rigidity between telescopic link and the sleeve. Therefore, the utility model has the advantages of can adjust the distance between pushing handle and the injection tube.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged view of portion B of FIG. 3;

FIG. 5 is a schematic view of the connection between the propulsion mechanism and the drive assembly and the motor according to an embodiment of the present invention;

FIG. 6 is a top view of FIG. 5;

FIG. 7 is a cross-sectional view taken along line C-C of FIG. 6;

fig. 8 is a schematic view of the connection relationship between the telescopic rod and the abutting block, the driving plate, the second compression spring, the limiting ring and the pushing handle according to the embodiment of the present invention.

In the figure, 1, an injection pump housing; 11. a U-shaped placing cavity; 12. a U-shaped mounting seat; 13. a rotating seat; 14. a card slot; 2. an injection tube; 21. a limiting flange; 3. a limiting column; 31. passing through a groove; 32. mounting grooves; 4. a rotating shaft; 5. a contact; 51. inserting the column; 52. a limiting sheet; 6. a first compression spring; 7. a piston rod; 8. a propulsion mechanism; 81. a push handle; 82. a telescoping assembly; 821. a sleeve; 822. a telescopic rod; 823. a second compression spring; 9. a motor; 10. a control system; 20. a drive plate; 30. a butting block; 40. a rotating shaft; 50. a second torsion spring; 60. a drive assembly; 601. pulling the rope; 602. a flexible cord; 70. a limiting ring; 701. a movable half ring; 7011. a movable end; 7012. a fixed end; 702. a stationary half ring; 80. and a positioning column.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a micro-injection pump impels structure, including injection pump housing 1, the front side of injection pump housing 1 is opened and is equipped with the U type and places chamber 11, and the U type is placed the open end of chamber 11 and is outwards, and the U type is placed chamber 11 and is horizontal setting. The middle part of the U-shaped placing cavity 11 is integrally formed with a U-shaped mounting seat 12, and the open end of the U-shaped mounting seat 12 faces outwards. Injection tube 2 has been placed to the inside of U type mount pad 12, and injection tube 2 is horizontal setting. One end of the syringe 2 is integrally formed with a limiting flange 21 (refer to fig. 5), the U-shaped mounting seat 12 is provided with a clamping groove 14, and the limiting flange 21 is inserted into the clamping groove 14.

Combine fig. 2, fig. 3 and fig. 4, U type mount pad 12 is provided with the spacing post 3 that is used for keeping the spacing state of injection tube 2 and U type mount pad 12 in its opening part, spacing post 3 is vertical setting, the lower extreme and the 4 welding of axis of rotation of spacing post 3, U type mount pad 12 sets up the inserting groove that supplies axis of rotation 4 to pass, spacing annular has been seted up to the inserting groove diapire, the aperture of spacing annular is greater than the aperture of inserting groove, the tip of axis of rotation 4 extends to the inside of spacing annular, the one end welding that axis of rotation 4 is located spacing annular has the spacing bulge loop that prevents that axis of rotation 4 from deviating from, axis of rotation 4 rotates with the inserting groove to be connected, spacing bulge loop rotates with spacing annular to be. The inside first torsional spring that is used for keeping spacing post 3 to be vertical state that is provided with of spacing annular, a torque arm of first torsional spring and the diapire fixed connection of spacing annular, another torque arm and axis of rotation 4 fixed connection, first torsional spring cover is located and is located the axis of rotation 4 of spacing annular inside.

The upper end of the limiting column 3 is provided with a contact 5 at one side close to the injection tube 2, the end part of the contact 5 is abutted against the peripheral wall of the injection tube 2, the contact 5 is provided with an arc surface at one side close to the injection tube 2, and the contact 5 is provided with a straight surface at one side close to the limiting column 3. Contact 5's straight face end integrated into one piece has grafting post 51, spacing post 3's upper end is seted up and is supplied grafting post 51 male groove 31 of crossing, the mounting groove 32 has been seted up to the diapire of crossing groove 31, the aperture of mounting groove 32 is greater than the aperture of groove 31, grafting post 51's tip is pegged graft in crossing groove 31 and is extended to the inside of mounting groove 32, grafting post 51 is located the inside one end welding of mounting groove 32 and has spacing piece 52, be provided with compression elastic component between spacing piece 52 and the diapire of mounting groove 32, compression elastic component is first compression spring 6, first compression spring 6's one end butt in the diapire of mounting groove 32, the other end butt in spacing piece 52.

Referring to fig. 5, a piston rod 7 capable of moving along the syringe 2 is disposed in the syringe 2, and an abutting piece is integrally formed at an end of the piston rod 7. The syringe pump housing 1 is provided with an advancing mechanism 8 for advancing the piston rod 7.

Referring to fig. 6 and 7, the pushing mechanism 8 includes a push handle 81 and a telescopic assembly 82 for driving the push handle 81 to move. The retraction assembly 82 comprises a sleeve 821 and a retraction rod 822 and an elastic return member, which is a second compression spring 823.

Injection pump housing 1 is the cavity setting, and injection pump housing 1's inside integrated into one piece has rotation seat 13, rotates seat 13 and is horizontal setting, rotates the upper surface of seat 13 and has seted up the U type and rotates the groove, and the U type rotates the open end in groove up. The sleeve 821 is provided inside the U-shaped rotary groove, the sleeve 821 is rotatably connected inside the U-shaped rotary groove, and the axis of the sleeve 821 is parallel to the axis of the syringe 2. The injection pump housing 1 is internally provided with a motor 9 for driving the sleeve 821 to rotate, and the sleeve 821 and the output end of the motor 9 rotate coaxially. The upper end of the syringe pump housing 1 is fitted with a control system 10 for driving the motor 9 in motion.

The sleeve 821 is arranged in a hollow mode, one end, far away from the motor 9, of the sleeve 821 is sleeved outside the telescopic rod 822, the axis of the telescopic rod 822 and the axis of the piston rod 7 are arranged in parallel, and the telescopic rod 822 and the piston rod 7 are located on the same side of the sleeve 821.

The welding of the telescopic link 822 that is located the inside sleeve 821 has drive plate 20, and second compression spring 823 sets up between sleeve 821 and drive plate 20, and the outside of telescopic link 822 is located to second compression spring 823 cover, and the one end butt of second compression spring 823 is in drive plate 20, the other end butt in the internal perisporium of sleeve 821, and when pulling telescopic link 822, telescopic link 822 drives drive plate 20 extrusion second compression spring 823, and second compression spring 823 is in unnatural state.

With reference to fig. 7 and 8, two obliquely disposed abutting blocks 30 are disposed at an end of the telescopic rod 822 located inside the sleeve 821, the two abutting blocks 30 are symmetrically disposed around an axis of the telescopic rod 822, one ends of the two abutting blocks 30 far from the telescopic rod 822 are far away from each other, an internal thread is disposed at one end of the abutting block 30 close to the sleeve 821, an external thread is disposed on an inner peripheral wall of the sleeve 821, and the abutting blocks 30 are in threaded connection with the sleeve 821.

The end of the abutting block 30 away from the sleeve 821 is hinged to the telescopic rod 822 through a rotating shaft 40, and the axis of the rotating shaft 40 is perpendicular to the axis of the telescopic rod 822.

The hinge groove has been seted up to the tip of telescopic link 822, and the hinge hole has been seted up to the lateral wall in hinge groove, and the hinge hole is two, and two hinge holes set up relatively, and the both ends of pivot 40 are pegged graft respectively in the inside of hinge hole, and pivot 40 and hinge hole fixed connection. The end of the abutting block 30 is inserted into the hinge slot, and the abutting block 30 located inside the hinge slot is rotatably connected to the rotating shaft 40. The cover is equipped with the spacing elastic component that is used for keeping butt joint piece 30 and sleeve 821 relation of connection on the pivot 40, and spacing elastic component is second torsional spring 50, second torsional spring 50 and butt joint piece 30 one-to-one, a torque arm and butt joint piece 30 fixed connection, another torque arm and the telescopic link 822 fixed connection of second torsional spring 50.

The extension bar 822 is provided with a driving assembly 60 for driving the ends of the abutment blocks 30 toward or away from each other. The drive assembly 60 includes a master link, which is a pull cord 601, and a slave link, which is a flexible cord 602.

The flexible ropes 602 correspond to the abutting blocks 30 one by one, the end portions of the flexible ropes 602 are fixedly bonded with the abutting blocks 30, and one ends of the flexible ropes 602, far away from the abutting blocks 30, are fixedly connected with the pulling ropes 601 through binding.

The middle of the telescopic rod 822 is provided with a first through hole for the pulling rope 601 to pass through, the end of the telescopic rod 822 far away from the sleeve 821 is provided with a second through hole, and the first through hole is communicated with the second through hole. One end of the pulling rope 601 far away from the flexible rope 602 penetrates through the first through hole and the second through hole and extends to the outside of the syringe pump housing 1.

The end portion of the telescopic rod 822 located outside the sleeve 821 is welded to the push handle 81, the push handle 81 is vertically arranged, and the push handle 81 and the telescopic rod 822 are arranged in an L shape. The push handle 81 is provided with a limit ring 70 for fixing the piston rod 7, and the piston rod 7 and the limit ring 70 are detachably connected.

The limiting ring 70 comprises a movable half ring 701 and a fixed half ring 702, the movable half ring 701 and the fixed half ring 702 are oppositely arranged, the movable half ring 701 comprises a movable end 7011 and a fixed end 7012, one end of the fixed half ring 702 is welded with the telescopic rod 822, and the other end of the fixed half ring 702 is welded with the push handle 81; the fixed end 7012 of the movable half ring 701 is rotatably connected with the telescopic rod 822, and the distance between the movable end 7011 of the movable half ring 701 and the fixed half ring 702 can be adjusted.

The one end that pulls rope 601 and is located the injection pump shell 1 outside extends to the expansion end 7011 of activity semi-ring 701, push away handle 81 and have the reference column in its lower extreme edge welding, the reference column sets up between activity semi-ring 701 and stationary semi-ring 702, activity semi-ring 701 sets up in the top of reference column, the one end that flexible rope 602 was kept away from to pulling rope 601 runs through around after first through-hole and second through-hole and connects in the reference column, the tip of pulling rope 601 upwards extends to the expansion end 7011 of activity semi-ring 701, the tip of pulling rope 601 and activity semi-ring 701 bond fixedly.

The implementation principle of the embodiment is as follows: when the injection device is used, one end, far away from the injection tube 2, of the piston rod 7 is connected with the push handle 81, the motor 9 is started, the motor 9 drives the sleeve 821 to rotate, the sleeve 821 is in threaded connection with the abutting block 30, the telescopic rod 822 and the sleeve 821 move in a telescopic mode under the action of the motor 9, the second compression spring 823 is extruded in the moving process of the telescopic rod 822, the second compression spring 823 is in a non-free state, the pushing of the piston rod 7 to liquid medicine in the injection tube 2 is achieved, and the liquid medicine in the injection tube 2 is conveniently conveyed to a human body; after injection is completed, the movable half ring 701 is pulled, the movable half ring 701 acts on the pulling rope 601, the pulling rope 601 drives the flexible rope 602 to pull the abutting block 30, the end part of the abutting block 30 is far away from the sleeve 821 under the action of the pulling rope 601 and the flexible rope 602, the second compression spring 823 returns to a natural state, and the second compression spring 823 drives the telescopic rod 822 to return to the original position; when the distance between the push handle 81 and the injection tube 2 needs to be fixed at a certain position, the movable half ring 701 is pulled, the distance between the telescopic rod 822 and the sleeve 821 is adjusted, after the telescopic rod 822 drives the push handle 81 to move to a certain position, the pulling on the movable half ring 701 is released, the second torsion spring 50 drives the abutting block 30 to return to the original position, the abutting block 30 is connected with the sleeve 821 again, and therefore the position fixing between the telescopic rod 822 and the sleeve 821 is achieved. Therefore, the utility model has the advantages of can adjust the distance between pushing handle 81 and injection tube 2.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (10)

1. The micro-injection pump propulsion structure comprises an injection pump shell (1) and an injection tube (2) arranged on the injection pump shell (1), wherein a piston rod (7) is arranged in the injection tube (2), and is characterized in that the injection pump shell (1) is provided with a propulsion mechanism (8) used for pushing the piston rod (7), the propulsion mechanism (8) comprises a push handle (81) and a telescopic assembly (82) used for driving the push handle (81) to move, the telescopic assembly (82) comprises a sleeve (821), a telescopic rod (822) and an elastic restoring piece, the sleeve (821) is sleeved outside the telescopic rod (822), the telescopic rod (822) is fixedly provided with a driving plate (20) used for releasing the natural state of the elastic restoring piece, and the elastic restoring piece is arranged between the driving plate (20) and the sleeve (821); the one end that telescopic link (822) are located inside sleeve (821) is provided with butt piece (30) that a plurality of slopes set up, and is a plurality of butt piece (30) use the axis of telescopic link (822) to set up as central symmetry, and is a plurality of the one end that telescopic link (822) were kept away from in butt piece (30) is kept away from each other, butt piece (30) are the slope setting, the one end and telescopic link (822) of butt piece (30) are articulated, the other end is connected with sleeve (821), telescopic link (822) are provided with and are used for driving butt piece (30) drive assembly (60) that are close to each other or keep away from.

2. The micro syringe pump propelling structure according to claim 1, wherein the inner circumferential wall of the sleeve (821) is provided with an external thread, the abutment block (30) is provided with an internal thread adapted to the sleeve (821), and one end of the abutment block (30) away from the telescopic rod (822) is in threaded connection with the sleeve (821).

3. The micro syringe pump propelling structure according to claim 1, wherein the driving assembly (60) comprises a main pull rod and a slave pull rod, the slave pull rod and the abutting block (30) are in one-to-one correspondence, the slave pull rod is fixedly connected with the abutting block (30), and one end of the slave pull rod, which is far away from the abutting block (30), is fixedly connected with the main pull rod; the abutting block (30) is provided with a limiting elastic piece used for keeping the abutting block (30) and the sleeve (821) connected.

4. The micro syringe pump propelling structure according to claim 3, wherein the number of the stopper elastic members is plural, and the stopper elastic members correspond to the abutment blocks (30) one to one.

5. The micro syringe pump advancing structure according to claim 3, wherein the push handle (81) is provided with a stopper ring (70) for fixing the piston rod (7), and the piston rod (7) and the stopper ring (70) are detachably connected.

6. The micro syringe pump advancing structure according to claim 5, wherein the limiting ring (70) comprises a movable half ring (701) and a stationary half ring (702), the movable half ring (701) and the stationary half ring (702) are oppositely arranged, the movable half ring (701) comprises a movable end (7011) and a fixed end (7012), the distance between the movable end (7011) and the stationary half ring (702) is adjustable, and one end of the main pull rod, which is far away from the slave pull rod, is fixedly connected with the movable end (7011) of the movable half ring (701).

7. The micro syringe pump advancing structure according to claim 3, wherein the main pull rod is a pull string (601).

8. The micro syringe pump propelling structure of claim 7, wherein the pushing handle (81) is fixedly provided with a positioning post, the positioning post is disposed between the movable half ring (701) and the main pull rod, and the pulling rope (601) is wound around the positioning post and is fixedly connected with the movable half ring (701).

9. The micro syringe pump propulsion structure according to claim 1, characterized in that the syringe pump housing (1) is provided with a motor (9) for driving the sleeve (821) in rotation, the sleeve (821) and the output end of the motor (9) rotating coaxially.

10. The micro-syringe pump propelling structure according to claim 1, wherein the syringe pump casing (1) is provided with a limiting post (3) for maintaining the connection state of the syringe cylinder (2) and the syringe pump casing (1), the limiting post (3) is rotatably connected with the syringe pump casing (1), one side of the limiting post (3) close to the syringe cylinder (2) is provided with a through groove (31), the bottom wall of the through groove (31) is provided with a mounting groove (32), the limiting post (3) is provided with a contact (5), one end of the contact (5) far away from the syringe cylinder (2) penetrates through the syringe cylinder (2) and extends into the mounting groove (32), a compression elastic member is arranged in the mounting groove (32), one end of the compression elastic member abuts against the bottom wall of the mounting groove (32), and the other end of the compression elastic member abuts against the contact (5).

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