Device suitable for thighbone and tibia injection of experimental animal

Abstract

The utility model relates to the technical field of experimental injection, in particular to a device suitable for thighbone and tibia injection of experimental animals, which comprises an injection cylinder placing seat, an arc-shaped groove is arranged at the top end of the outer wall of the injection cylinder placing seat, and an injection cylinder main body is arranged at the top end of the outer wall of the injection cylinder placing seat through the arc-shaped groove. The left side of the outer wall of the syringe body is connected with a piston rod in a sliding mode, the right end of the syringe body is communicated with a sliding barrel, the outer wall of the sliding barrel is connected with a sleeve in a sliding mode, and the right side of the outer wall of the syringe containing base is provided with a backward moving component enabling the sleeve to move backwards. A piston rod is extruded through a push rod and a push plate, so that in the liquid discharging process of a needle head, a movable seat is pulled to move through an electric control telescopic rod, the movable seat can drive a sleeve and the needle head to move backwards in the liquid discharging process, and therefore the situation that liquid is sprayed and overflows due to the fact that the internal pressure of the thighbone and the tibia is too large in the liquid injection process can be prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to experimental injection technical field, concretely relates to a device suitable for experimental animal femur, tibia injection. BACKGROUND

[0002] In medical experiment, medical staff needs to carry out cell injection to femur and tibia of animal to construct such as osteosarcoma or simulate tumor bone metastasis model, is applied to relevant immune experiment, and its injection mode depends on syringe frequently;

[0003] But medical staff often causes drug spouts overflow because femur, tibia internal pressure is too big when carrying out administration injection through syringe, causes femur and tibia to be unable to carry out normal administration, therefore still has certain deficiency.

[0004] Summarizing, it is very necessary to invent a device suitable for experimental animal femur, tibia injection. UTILITY MODEL CONTENT

[0005] Therefore, the utility model provides a device suitable for experimental animal femur, tibia injection to solve the problem that drug spouts overflow because femur, tibia internal pressure is too big, causes femur and tibia to be unable to carry out normal administration.

[0006] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a device suitable for experimental animal femur, tibia injection, including injection cylinder placing seat, the outer wall top of injection cylinder placing seat is equipped with arc slot, the outer wall top of injection cylinder placing seat is installed with injection cylinder main body through arc slot, the outer wall left side of injection cylinder main body is connected with piston rod slidingly, the right -hand member of injection cylinder main body is connected with slide cylinder, the outer wall of slide cylinder is connected with sleeve slidingly, the outer wall left side of injection cylinder placing seat is provided with injection component, the outer wall right side of injection cylinder placing seat is provided with the rear shift component of making sleeve rear shift.

[0007] Preferably, the outer wall top of injection cylinder placing seat and located at both sides of arc slot is provided with arcuate seat, the outer wall bottom of arcuate seat is fixed through bolt with the outer wall top of injection cylinder placing seat on front and back sides.

[0008] Preferably, the outer wall of arcuate seat is screw -threaded with locking screw on top and bottom, and the bottom end of the locking screw is connected with the first arc-shaped clamping block for pressing and fixing the injection cylinder main body through the inner wall top of the arcuate seat.

[0009] Preferably, the injection component comprises a push rod arranged below the piston rod, a receiving groove is formed in the outer wall of the injection cylinder placement seat at a position corresponding to the push rod, the outer wall of the push rod is in sliding connection with the inner wall of the receiving groove, and a push plate for pushing the piston rod is rotationally connected to the end of the push rod away from the injection cylinder placement seat.

[0010] Preferably, a gear slot is formed in the front end of the outer wall of the push rod, a driving motor is fixed to the top end of the inner wall of the receiving groove at the front side of the push rod, a gear wheel is fixed to the bottom output shaft of the driving motor, and the outer wall of the gear wheel is in meshing connection with the gear slot.

[0011] Preferably, a sealing ring is fixed to one end of the slide cylinder inserted into the sleeve, the outer wall of the sealing ring is in sliding connection with the inner wall of the sleeve, reset springs are fixed to the outer wall of the sleeve at positions corresponding to the outer side of the slide cylinder, and the upper ends of the reset springs are fixed to the outer wall of the injection cylinder body at positions corresponding to the right side of the injection cylinder body.

[0012] Preferably, the rear moving component comprises a moving seat arranged below the bottom end of the outer wall of the sleeve, an electric control telescopic rod is fixed to the bottom of the outer wall of the side of the moving seat close to the injection cylinder placement seat, and the electric control telescopic rod is installed in the mounting groove formed in the bottom of the outer wall of the right side of the injection cylinder placement seat.

[0013] Preferably, a second arc-shaped clamping block is hinged to one side of the top end of the outer wall of the moving seat, the other end of the second arc-shaped clamping block is fixed to the other side of the top end of the outer wall of the moving seat through bolts, and the bottom end of the outer wall of the second arc-shaped clamping block is in abutment with the top end of the outer wall of the sleeve.

[0014] The utility model discloses the beneficial effect is:

[0015] In the utility model, in the process of extruding the piston rod by the push rod and the push plate, the needle is moved rearward in the process of discharging liquid by the electric control telescopic rod pulling the moving seat to move, so that the moving seat can drive the sleeve and the needle to move rearward in the process of discharging liquid, thereby preventing the internal pressure of the femur and tibia from being too large in the process of injecting liquid, and liquid from spilling out. ACCOUT OF DRAWINGS

[0016] Figure 1 It is the external structure schematic diagram of the front direction of the utility model;

[0017] Figure 2 It is the partial cross section structure schematic diagram of the front direction of the utility model;

[0018] Figure 3 It is the structure schematic diagram of the utility model Figure 2 enlarged structure schematic diagram of A place in the utility model;

[0019] Figure 4 It is the partial structure schematic diagram of the top direction of the utility model;

[0020] Figure 5 For the utility model Figure 4 The structure schematic diagram of the enlarged B in the middle;

[0021] Figure 6 For the utility model, the three-dimensional structure schematic diagram of the side view direction of the arc-shaped seat.

[0022] In the drawing: 100, injection cylinder placing seat; 110, storage groove; 200, push rod; 210, push plate; 220, gear slot; 230, driving motor; 231, gear; 300, arc-shaped seat; 310, locking screw; 320, first arc-shaped clamping block; 400, moving seat; 410, electric control telescopic rod; 420, second arc-shaped clamping block; 500, injection cylinder main body; 510, piston rod; 520, sliding cylinder; 530, sleeve; 531, reset spring. Specific implementation

[0023] The preferred embodiments of the utility model are described below in combination with the drawings, and it should be understood that the preferred embodiments described herein are only used for illustrating and explaining the utility model, and are not used for limiting the utility model.

[0024] Referring to the accompanying Figures 1-6 The utility model provides a kind of device suitable for experimental animal femur, tibia injection, including injection cylinder placing seat 100, the outer wall top of injection cylinder placing seat 100 is equipped with arc slot, the outer wall top of injection cylinder placing seat 100 is equipped with injection cylinder main body 500 by arc slot, the outer wall left side of injection cylinder main body 500 is slidably connected with piston rod 510, and piston rod 510 is mainly arranged by pushing to discharge liquid medicine or cell, the outer wall top of injection cylinder placing seat 100 and located the two sides of arc slot are equipped with arc-shaped seat 300, and the arc-shaped seat 300 is mainly arranged to fix injection cylinder main body 500 at the top of injection cylinder placing seat 100, the outer wall bottom end of arc-shaped seat 300 is fixed by bolt to the outer wall top of injection cylinder placing seat 100 on front and back sides, locking screw 310 is screw-connected on the outer wall upper end and lower end of arc-shaped seat 300, the bottom of locking screw 310 passes through the inner wall top of arc-shaped seat 300 and is rotatably connected with first arc-shaped clamping block 320 for the compression fixed injection cylinder main body 500, specifically, personnel can take out arc-shaped seat 300 after placing injection cylinder main body 500 on injection cylinder placing seat 100, and arc-shaped seat 300 is fixed at the top of injection cylinder placing seat 100 by bolt on two sides, then by screwing locking screw 310, so that locking screw 310 drives first arc-shaped clamping block 320 to move downwards, so that first arc-shaped clamping block 320 can compress and fix the top of injection cylinder main body 500;

[0025] The outer wall left side of the injection cylinder placement seat 100 is provided with an injection component, which comprises a push rod 200, the push rod 200 is arranged below the piston rod 510, the outer wall left side of the injection cylinder placement seat 100 and the corresponding position of the push rod 200 is provided with a receiving groove 110, the outer wall of the push rod 200 and the inner wall of the receiving groove 110 are in sliding connection, the end of the push rod 200 away from the injection cylinder placement seat 100 is rotationally connected with a push plate 210 for pushing the piston rod 510, the outer wall front end of the push rod 200 is provided with a gear slot 220, the inner wall top end of the receiving groove 110 and located at the front side of the push rod 200 is fixed with a drive motor 230, the bottom output shaft of the drive motor 230 is fixed with a gear wheel 231, the outer wall of the gear wheel 231 is engaged with the gear slot 220, specifically, when the personnel need to install the injection cylinder main body 500, the push rod 200 and the push plate 210 can be discharged to the outside, then the drive motor 230 is energized to drive the gear wheel 231 to rotate, and the gear wheel 231 can drive the push rod 200 to move in the receiving groove 110 through the engagement of the gear slot 220, and the push rod 200 can push the piston rod 510 to slide into the injection cylinder main body 500 through the push plate 210 when moving, so that the liquid in the injection cylinder main body 500 can be discharged from the injection port, and the push rod 200 and the push plate 210 can quantitatively push the piston rod 510 to move;

[0026] The right end of the injection cylinder body 500 is communicated with a sliding cylinder 520, the outer wall of the sliding cylinder 520 is slidably connected with a sleeve 530, one end of the sliding cylinder 520 inserted into the sleeve 530 is fixedly connected with a sealing ring, the outer wall of the sealing ring is slidably connected with the inner wall of the sleeve 530, the sleeve 530 is arranged to slide on the outer wall of the sliding cylinder 520 when needed, and the sealing ring is arranged to ensure that the liquid can only be discharged from the needle connected to the right end of the sleeve 530, the outer wall of the sleeve 530 and the outer side of the sliding cylinder 520 are fixedly connected with a reset spring 531, the upper end of the reset spring 531 is fixed to the corresponding position of the outer wall of the right side of the injection cylinder body 500, the reset spring 531 is arranged to keep the sleeve 530 reset without external force through the elastic force, and the reset spring 531 is arranged in an extension state in a normal state, the right side of the outer wall of the injection cylinder placing seat 100 is provided with a backward moving part for moving the sleeve 530 backward, the backward moving part comprises a moving seat 400, the moving seat 400 is arranged below the bottom end of the outer wall of the sleeve 530, the bottom of the outer wall of the side close to the injection cylinder placing seat 100 is fixedly connected with an electric control telescopic rod 410, the electric control telescopic rod 410 is installed in the mounting groove formed in the right side bottom of the outer wall of the injection cylinder placing seat 100, the electric control telescopic rod 410 is arranged to drive the moving seat 400 to move leftward and rightward through the extension and contraction of the output end when powered, the top end of the outer wall of the moving seat 400 is hingedly connected with a second arc-shaped clamping block 420, the other end of the second arc-shaped clamping block 420 is fixed to the other side of the top end of the outer wall of the moving seat 400 through a bolt, the bottom end of the outer wall of the second arc-shaped clamping block 420 abuts against the top end of the outer wall of the sleeve 530, the second arc-shaped clamping block 420 is arranged to fix the sleeve 530 to the top end of the outer wall of the moving seat 400, the sleeve 530 can slide towards the outer wall of the sliding cylinder 520 through the movement of the moving seat 400, a storage groove can be formed in a suitable position of the bottom end of the injection cylinder placing seat 100 to place a battery, (at the same time, an internal circuit board is also needed to be arranged on the injection cylinder placing seat 100, so that a person can control the start of the driving motor 230 and the extension and contraction of the electric control telescopic rod 410 through a switch, and the above-mentioned circuit connection mode has been disclosed in detail in the prior art, and the present application does not make too many descriptions here).

[0027] The using process of the utility model is as follows: firstly, personnel can control the reverse rotation of the driving motor 230 through the switch, so that the push rod 200 drives the push plate 210 to slide outward, personnel can take out the syringe main body 500, and the syringe main body 500 is used to suck the cell liquid, after completion, the syringe main body 500 can be placed in the arc-shaped groove at the top end of the syringe placing seat 100, then the arc-shaped seat 300 is taken out, and the arc-shaped seat 300 is first fixed on the outer wall top end of the syringe placing seat 100 through the bolt, after completion, the locking screw 310 is screwed to drive the first arc-shaped clamping block 320 to move downward and press and fix the outer wall top end of the syringe main body 500;

[0028] When personnel place the syringe main body 500, the sleeve 530 arranged needs to be placed in the groove opened at the top end of the moving seat 400, then personnel can overturn the second arc-shaped clamping block 420 downward, and the other end of the second arc-shaped clamping block 420 is fixed through the bolt, so that the second arc-shaped clamping block 420 can fix the sleeve 530 on the moving seat 400;

[0029] When in use, personnel can hold the syringe placing seat 100, and make the needle fixed at the right end of the sleeve 530 inserted into the femur and tibia position of the animal, then the driving motor 230 is powered and rotated forward through the switch control, so that the driving motor 230 drives the gear 231 to rotate forward, so that the gear 231 slides the push rod 200 into the storage groove 110 through the meshing with the gear slot 220, and the push rod 200 can push the piston rod 510 to slide into the syringe main body 500 when sliding, so that the cell liquid in the syringe main body 500 can be discharged from the needle, in order to avoid that the pressure of the femur and tibia is too large, at the same time, the electric control telescopic rod 410 can be retracted in the process of injection, so that the electric control telescopic rod 410 pulls the moving seat 400 to slide to the direction of the syringe placing seat 100, and the moving seat 400 can pull the sleeve 530 to slide to the direction of the sliding cylinder 520 when moving, so that the needle can move backward in the process of injection and liquid discharge, so that the pressure of the femur and tibia can be reduced, and the situation that the cell liquid is sprayed and overflowed can be avoided.

[0030] The above is only the preferred embodiment of the utility model, and any skilled person in the art can modify the technical solution described above or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement according to the technical solution of the utility model is within the scope of protection of the utility model.

Claims

1. A device suitable for injecting femur and tibia of experimental animals, comprising an injection cylinder placement seat (100), an arc-shaped slot is formed at the top of the outer wall of the injection cylinder placement seat (100), an injection cylinder main body (500) is installed at the top of the outer wall of the injection cylinder placement seat (100) through the arc-shaped slot, and a piston rod (510) is slidably connected to the left side of the outer wall of the injection cylinder main body (500), characterized in that: The right end of the injection cylinder body (500) is communicated with a sliding cylinder (520), the outer wall of the sliding cylinder (520) is slidingly connected with a sleeve (530), the outer wall of the left side of the injection cylinder placing seat (100) is provided with an injection part, and the outer wall of the right side of the injection cylinder placing seat (100) is provided with a rear moving part for moving the sleeve (530) rearward. ​ 2. The device for injecting the femur and tibia of experimental animals according to claim 1, characterized in that: The top end of the outer wall of the injection cylinder placing seat (100) and located on both sides of the arc-shaped groove is provided with an arched seat (300), and the bottom end of the outer wall of the arched seat (300) is fixed to the top end of the outer wall of the injection cylinder placing seat (100) through bolts.

3. The device for injecting the femur and tibia of experimental animals according to claim 2, characterized in that: The upper and lower ends of the outer wall of the arched seat (300) are threadedly connected with locking screws (310), the bottom end of the locking screw (310) penetrates through the top end of the inner wall of the arched seat (300) and is rotationally connected with a first arc-shaped clamping block (320) for pressing and fixing the injection cylinder body (500).

4. The device for injecting the femur and tibia of experimental animals according to claim 1, characterized in that: The injection part comprises a push rod (200), the push rod (200) is arranged below the piston rod (510), the outer wall of the push rod (200) is slidingly connected with the inner wall of the receiving groove (110) formed in the left side of the outer wall of the injection cylinder placing seat (100) and corresponding to the push rod (200), and the end of the push rod (200) away from the injection cylinder placing seat (100) is rotationally connected with a push plate (210) for pushing the piston rod (510).

5. The device for injection of the femur and tibia of experimental animals according to claim 4, characterized in that: The front end of the outer wall of the push rod (200) is provided with a gear slot (220), the top end of the inner wall of the receiving groove (110) and located on the front side of the push rod (200) is fixed with a driving motor (230), the bottom output shaft of the driving motor (230) is fixed with a gear (231), and the outer wall of the gear (231) is engaged with the gear slot (220).

6. The device for injecting the femur and tibia of experimental animals according to claim 1, characterized in that: The end of the sliding cylinder (520) inserted into the sleeve (530) is fixed with a sealing ring, the outer wall of the sealing ring is slidingly connected with the inner wall of the sleeve (530), the outer wall of the sleeve (530) and located on the outer side of the sliding cylinder (520) is fixed with a reset spring (531), and the upper end of the reset spring (531) is fixed to the corresponding position of the right side of the outer wall of the injection cylinder body (500).

7. A device for injecting the femur and tibia of a laboratory animal according to claim 6, characterized in that: The rear moving part comprises a moving seat (400), the moving seat (400) is arranged below the bottom end of the outer wall of the sleeve (530), the bottom end of the outer wall of the side close to the injection cylinder placing seat (100) of the moving seat (400) is fixed with an electric control telescopic rod (410), and the electric control telescopic rod (410) is installed in the mounting groove formed in the bottom of the right side of the outer wall of the injection cylinder placing seat (100).

8. The device for injection of the femur and tibia of experimental animals according to claim 7, characterized in that: The top end of the outer wall of the moving seat (400) is hingedly connected with a second arc-shaped clamping block (420), the other end of the second arc-shaped clamping block (420) is fixed to the other side of the top end of the outer wall of the moving seat (400) through a bolt, and the bottom end of the outer wall of the second arc-shaped clamping block (420) abuts against the top end of the outer wall of the sleeve (530).

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