Improved mouse cisterna magna injection assembly

Abstract

The utility model discloses an improved mouse cerebellum medullary cistern injection assembly belongs to mouse cerebellum medullary cistern injection technical field, including injection cylinder, the top of injection cylinder has the opening, and the top of injection cylinder opening position department detachably installs the apron, the apron on sliding installation has the push rod, the top fixed mounting of push rod has the push board, the bottom of push rod extends to the inside of injection cylinder and fixed mounting has the piston board, the piston board sliding fits and is arranged in the inside of injection cylinder and forms the sliding seal between injection cylinder, through setting up the sealing plug to carry out the reinforced seal to the connecting place of liquid outlet head and hose, effectively prevent the liquid leakage phenomenon, utilize the setting of pen point formula needle head can be convenient to enter the needle injection use, also can according to the shape of pen point formula needle head to the depth of needle control, and utilize the apron of setting cooperation uses, can conveniently carry out the convenient dismounting operation use to the piston board in the injection cylinder.

Description

Technical Field

[0001] This invention belongs to the field of mouse cerebellomedullary cistern injection technology, specifically relating to an improved mouse cerebellomedullary cistern injection component. Background Technology

[0002] Cerebellomedullary cistern puncture is an important medical examination procedure, but it must be performed under the guidance of a professional physician to ensure the safety and accuracy of the operation. When there is an obstruction in the cerebellomedullary cistern, puncture and pressure measurement of the cerebellomedullary cistern are performed, and the puncture fluid is sent for routine and biochemical quantitative examinations. This can accurately reflect the intracranial lesion and can be compared with lumbar puncture fluid. When learning to perform cerebellomedullary cistern puncture, it is necessary to conduct experiments on mice first. During the experiment, injection is required, and a syringe is needed for the injection.

[0003] Existing syringes have a direct connection between the tubing and the syringe needle, which can easily lead to air leakage. Furthermore, the depth of the syringe tip used for puncture is difficult to control, and excessive depth can damage the medulla oblongata. Therefore, we propose an improved mouse cerebellar cistern injection component. Utility Model Content

[0004] The purpose of this invention is to provide an improved mouse cerebellomedullary cistern injection component to solve the problems mentioned in the background art, such as the direct connection between the tubing and the syringe needle in existing syringes, which can easily lead to air leakage, and the difficulty in controlling the depth of the syringe nozzle used for puncture, which can easily damage the medulla oblongata if too deep.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an improved mouse cerebellomedullary cistern injection assembly, comprising an injection cylinder, the top of which has an opening, and a cover plate is detachably installed at the opening position. A push rod is slidably installed on the cover plate, a push plate is fixedly installed at the top of the push rod, and a piston plate is fixedly installed at the bottom end of the push rod into the injection cylinder. The piston plate is slidably fitted inside the injection cylinder and forms a sliding seal with the injection cylinder. A handle is fixedly installed on the outer surface of the top of the injection cylinder. The outer surface of the syringe body has graduation lines. A dispensing head is installed through the bottom end of the syringe body. A flexible tube is sleeved on the outer surface of the bottom end of the dispensing head. A sealing plug is sleeved on the outer surface of the connection between the dispensing head and the flexible tube. A pen-tip needle is installed at the other end of the flexible tube. An insert plate is fixedly installed on the outer surface of the pen-tip needle on the flexible tube. A storage tube is fixedly installed on the outer surface of the syringe body. The bottom end of the storage tube has a storage opening, and a slot for inserting the insert plate is opened at the storage opening. The pen-tip needle is specifically made of capillary glass tube.

[0006] The above solution strengthens the seal at the connection between the dispensing head and the tubing by setting a sealing plug, effectively preventing leakage. The pen-tip needle design facilitates injection and allows for depth adjustment based on its shape. The cover plate facilitates easy disassembly and assembly of the piston plate inside the syringe. A storage tube with an insert plate allows the pen-tip needle to be inserted into the storage tube and then into the slot, secured by a locking rod, thus protecting the needle from external safety hazards.

[0007] In a preferred embodiment, the bottom outer surface of the cover plate has an external thread, and the top of the injection cylinder has a recess with an internal thread, wherein the external thread and the internal thread are used in conjunction.

[0008] By using the above solution, the protruding and recessed parts are used in conjunction with external and internal threads to achieve a stable connection and assembly of the cover plate. The threaded connection has good stability and is not prone to loosening.

[0009] In a preferred embodiment, a sealing ring is attached to the lower surface of the cover plate, and the lower surface of the sealing ring is in contact with the top surface of the injection cylinder.

[0010] By adopting the above solution, the sealing ring can ensure good sealing properties after the cover plate and the injection cylinder are assembled together, thus avoiding air leakage.

[0011] In a preferred embodiment, an anti-slip sleeve is fitted onto the outer surface of the cover plate, and the anti-slip sleeve is adhered to the outer surface of the cover plate.

[0012] By adopting the above solution, the anti-slip sleeve can effectively prevent slippage when operating the rotating cover, thus improving the stability of rotation.

[0013] In a preferred embodiment, a locking rod is slidably installed on the storage tube at the position opposite the slot. An operating plate is fixedly installed at one end of the locking rod, and a locking groove is opened on the side of the insert plate. The other end of the locking rod has a locking groove for cooperation.

[0014] By using the above scheme, the locking rod is used in conjunction with the locking groove. When the insert plate is inserted into the slot, the locking rod is inserted into the locking groove, thereby locking the insert plate and thus achieving the insertion and locking of the pen tip needle.

[0015] In a preferred embodiment, a spring is sleeved on the outside of the locking rod, and the two ends of the spring are fixedly connected to the side of the storage tube and the side of the operating plate, respectively.

[0016] By adopting the above solution, the spring force can be used to drive the locking rod to be quickly inserted into the locking groove, improving the convenience of locking operation.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This improved mouse cerebellomedullary cistern injection assembly strengthens the seal at the connection between the dispensing head and the tubing by setting a sealing plug, effectively preventing leakage. The pen-tip needle design facilitates injection and allows for adjustment of the injection depth based on the shape of the needle. Furthermore, the cover plate facilitates easy disassembly and assembly of the piston plate inside the injection cylinder.

[0019] This improved mouse cerebellomedullary cistern injection component uses a storage tube and a plate for insertion. The pen-tip needle can be inserted into the storage tube and then into the slot with the plate. The locking rod is inserted into the locking slot to store and protect the pen-tip needle, avoiding the safety hazards of external placement. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0022] Figure 3 This is a structural schematic diagram showing the cross-sectional view of the liquid outlet head, sealing plug, and hose of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the cover plate of this utility model;

[0024] Figure 5 This is a structural schematic diagram of the cross-section of the storage tube of this utility model;

[0025] Figure 6 This utility model Figure 5 Enlarged structural diagram at point A in the middle.

[0026] In the diagram: 1. Injector body; 2. Cover plate; 3. Push rod; 4. Push plate; 5. Piston plate; 6. Handle; 7. Scale line; 8. Dispensing head; 9. Sealing plug; 10. Tube; 11. Pen tip needle; 12. Insert plate; 13. Storage tube; 14. Sealing ring; 15. Anti-slip sleeve; 16. Locking rod; 17. Control panel; 18. Spring. Detailed Implementation

[0027] Please see Figure 1-6This utility model provides an improved mouse cerebellomedullary cistern injection assembly, including an injection cylinder 1. The top of the injection cylinder 1 has an opening, and a cover plate 2 is detachably installed at the opening position of the top of the injection cylinder 1. A push rod 3 is slidably installed on the cover plate 2, and a push plate 4 is fixedly installed at the top of the push rod 3. The bottom end of the push rod 3 extends into the interior of the injection cylinder 1 and a piston plate 5 is fixedly installed thereon. The piston plate 5 is slidably fitted inside the injection cylinder 1 and forms a sliding seal with the injection cylinder 1. A handle 6 is fixedly installed on the outer surface of the top of the injection cylinder 1. The outer surface of the injection cylinder 1 has... The syringe body 1 has a graduated line 7 and a liquid outlet 8 installed through the bottom end. A flexible tube 10 is fitted on the outer surface of the bottom end of the liquid outlet 8. A sealing plug 9 is fitted on the outer surface of the connection between the liquid outlet 8 and the flexible tube 10. A pen tip needle 11 is installed at the other end of the flexible tube 10. An insert plate 12 is fixedly installed on the outer surface of the pen tip needle 11 of the flexible tube 10. A storage tube 13 is fixedly installed on the outer surface of the syringe body 1. The bottom end of the storage tube 13 has a storage opening, and a slot for inserting the insert plate 12 is opened at the storage opening. The pen tip needle 11 is specifically made of capillary glass tube.

[0028] By setting a sealing plug 9 to strengthen the seal at the connection between the liquid outlet head 8 and the tubing 10, leakage is effectively prevented. The pen-tip needle 11 is designed for convenient injection and allows for adjustment of the injection depth based on its shape. The cover plate 2 facilitates easy disassembly and assembly of the piston plate 5 inside the syringe barrel 1. The storage tube 13 works in conjunction with the insert plate 12, allowing the pen-tip needle 11 to be inserted into the storage tube 13 and into the slot with the insert plate 12. The locking rod 16 is inserted into the locking groove to achieve storage and protection of the pen-tip needle 11, avoiding the safety hazards associated with external placement.

[0029] The bottom outer surface of the cover plate 2 has external threads, and the top of the injection cylinder 1 has a recessed part with internal threads. The external and internal threads are used in conjunction. By using the protrusion and the recessed part in conjunction with the external and internal threads, the cover plate 2 can be stably connected and assembled. The threaded connection has good stability and is not prone to loosening.

[0030] A sealing ring 14 is attached to the lower surface of the cover plate 2. The lower surface of the sealing ring 14 is in contact with the top surface of the injection barrel 1. The sealing ring 14 ensures good sealing performance after the cover plate 2 and the injection barrel 1 are assembled together, thus preventing air leakage.

[0031] The outer surface of the cover plate 2 is fitted with an anti-slip sleeve 15. The anti-slip sleeve 15 is attached to the outer surface of the cover plate 2. The anti-slip sleeve 15 can effectively prevent slippage when rotating the cover plate 2, thereby improving the stability of the rotation.

[0032] A locking rod 16 is slidably installed on the storage tube 13 at the position opposite the slot. An operation plate 17 is fixedly installed on one end of the locking rod 16. A locking groove is opened on the side of the insertion plate 12. The other end of the locking rod 16 is used in conjunction with the locking groove. When the insertion plate 12 is inserted into the slot, the locking rod 16 is inserted into the locking groove, thereby locking the insertion plate 12 and thus locking the pen tip needle 11.

[0033] A spring 18 is sleeved on the outside of the locking rod 16. The two ends of the spring 18 are fixedly connected to the side of the storage tube 13 and the side of the operating plate 17, respectively. The spring force of the spring 18 can drive the locking rod 16 to be quickly inserted into the lock groove, improving the convenience of locking operation.

[0034] In use, the sealing plug 9 effectively seals the connection between the tubing 10 and the dispensing head 8. With the hand placed at the handle 6, the push plate 4 is pulled upwards, causing the push rod 3 to move the piston rod upwards. This allows the liquid to be drawn into the syringe body 1 through the pen-tip needle 11, tubing 10, and dispensing head 8. When injection is needed, the pen-tip needle 11 is inserted into the cerebellar cistern, and the push plate 4 is pushed in the opposite direction, allowing the liquid to be injected through the syringe body 1 from the dispensing head 8 and tubing 10 via the pen-tip needle 11. When not in use, the pen-tip needle 11 is inserted into the storage cylinder 13, and the operating plate 17 is pulled to disengage the locking rod 16 from the slot. At this time, the spring 18 deforms. When the insert plate 12 is inserted into the slot, the operating plate 17 is released, and the spring force of the spring 18 drives the locking rod 16 to reset and insert into the locking groove, achieving storage and locking. When the piston plate 5 needs to be cleaned, the cover plate 2 is rotated through the anti-slip sleeve 15 to disengage the cover plate 2 from the syringe body 1, and then the piston plate 5 can be removed.

Claims

1. An improved mouse cerebellomedullary cistern injection assembly, characterized in that: The syringe includes an injection barrel (1), which has an opening at its top end. A cover plate (2) is detachably installed at the opening at the top end of the injection barrel (1). A push rod (3) is slidably installed on the cover plate (2). A push plate (4) is fixedly installed at the top end of the push rod (3). The bottom end of the push rod (3) extends into the inside of the injection barrel (1) and is fixedly installed with a piston plate (5). The piston plate (5) is slidably fitted inside the injection barrel (1) and forms a sliding seal with the injection barrel (1). A handle (6) is fixedly installed on the outer surface of the top end of the injection barrel (1). The outer surface of the injection barrel (1) has graduation lines (7). (1) has a liquid outlet (8) installed through the bottom end. The outer surface of the bottom end of the liquid outlet (8) is fitted with a flexible tube (10). The outer surface of the connection between the liquid outlet (8) and the flexible tube (10) is fitted with a sealing plug (9). The other end of the flexible tube (10) is fitted with a pen tip needle (11). The outer surface of the pen tip needle (11) of the flexible tube (10) is fixedly fitted with a plate (12). The outer surface of the syringe body (1) is fixedly fitted with a storage tube (13). The bottom end of the storage tube (13) has a storage opening, and a slot for inserting the plate (12) is opened at the storage opening. The pen tip needle (11) is specifically made of capillary glass tube.

2. The improved mouse cerebellomedullary cistern injection assembly according to claim 1, characterized in that: The bottom outer surface of the cover plate (2) has an external thread, and the top of the injection cylinder (1) has a recessed portion with an internal thread. The external thread and the internal thread are used in conjunction.

3. The improved mouse cerebellomedullary cistern injection assembly according to claim 1, characterized in that: A sealing ring (14) is attached to the lower surface of the cover plate (2), and the lower surface of the sealing ring (14) is in contact with the top surface of the injection cylinder (1).

4. The improved mouse cerebellomedullary cistern injection assembly according to claim 1, characterized in that: The outer surface of the cover plate (2) is fitted with an anti-slip sleeve (15), which is attached to the outer surface of the cover plate (2).

5. The improved mouse cerebellomedullary cistern injection assembly according to claim 1, characterized in that: A locking rod (16) is slidably installed on the storage tube (13) at the position opposite the slot. An operating plate (17) is fixedly installed on one end of the locking rod (16). A locking groove is opened on the side of the insert plate (12). The other end of the locking rod (16) has a locking groove for use.

6. The improved mouse cerebellomedullary cistern injection assembly according to claim 5, characterized in that: A spring (18) is sleeved on the outside of the locking rod (16), and the two ends of the spring (18) are fixedly connected to the side of the storage tube (13) and the side of the operating plate (17), respectively.

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