A high pressure syringe

Abstract

The application discloses a high-pressure injector and belongs to medical devices. The application is proposed in view of the problem that the movement track of the existing technology is only a smooth arc. The end of the fastening sheet away from the rotating shaft is provided with a freely extending slide rod, and a limiting block is arranged at the free end of the slide rod. A slide sheet is further arranged, one end of the slide sheet is slidably connected with the slide rod, and the other end of the slide sheet freely extends to the side of the fastening part perpendicularly to the slide rod. The lower end surface of the slide sheet is provided with an insertion sheet, and the insertion sheet extends to the fastening part in parallel to the slide rod. The side of the fastening part is provided with an insertion slot vertically above the fastening block, and the shape of the insertion slot is adapted to the insertion sheet. When the insertion sheet is fastened with the fastening slot and the fastening block, the insertion sheet can be inserted into the insertion slot. The application has the advantages that the direction of separating the fastening slot from the fastening block is changed from single arc movement to radial movement and then arc movement. The exposed fastening sheet cannot be accidentally touched to cause the needle cylinder to fall off and other dangers, and the safety of the operation is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to medical devices, in particular to a high-pressure injector. BACKGROUND

[0002] High-pressure injector is used to inject medical liquid such as developing agent into human body by high-pressure injection. The structure mainly includes a main machine 10 provided with various electric control modules and a needle cylinder seat 20 for fixing a needle cylinder 30, as shown in the left side of Figures 1 to 5 The main machine 10 is fixedly provided with a buckling part 11 for detachable connection with the needle cylinder seat 20. The rear end surface of the needle cylinder seat 20 is embedded into the buckling part 11 from bottom to top, and the front end surface of the needle cylinder seat 20 is used to connect the needle cylinder 30. The needle cylinder 30 has various specifications, so the needle cylinder seat 20 also has various matching interfaces. By installing needle cylinder seats 20 of different specifications, one main machine 10 can be adapted to various needle cylinders 30. The needle cylinder 30 is consumable, and the needle cylinder seat 20 is a spare part of the high-pressure injector, which is non-consumable.

[0003] The rear end surface of the needle cylinder seat 20 is also provided with a rotating shaft 22, one end of the rotating shaft 22 is fixedly installed in the needle cylinder seat 20, and the other end of the rotating shaft 22 is rotatably connected with a buckling piece 21. The end of the buckling piece 21 away from the rotating shaft 22 is provided with a push block 24. The buckling piece 21 is provided with a buckling groove 23 in the middle. The buckling part 11 is provided with a buckling block 12 at the end surface close to the needle cylinder seat 20, and the relative position is matched with the buckling groove 23. The buckling piece 21 and the rotating shaft 22 are parts combined with the needle cylinder seat 20 as a whole, Figures 3 to 5 In order to intuitively show the matching relationship of the buckling piece 21 and the buckling part 11, the buckling piece 21 and the rotating shaft 22 are not separated from the needle cylinder seat 20.

[0004] When the needle cylinder seat 20 is embedded into the buckling part 11 from bottom to top, the push block 24 is pushed to make the buckling groove 23 buckled with the buckling block 12, so as to lock the relative position of the buckling part 11 and the needle cylinder seat 20 in the vertical direction, as shown in the right side of Figure 5 When the needle cylinder seat 20 is embedded into the buckling part 11 from bottom to top, the push block 24 is pushed to make the buckling groove 23 buckled with the buckling block 12, so as to lock the relative position of the buckling part 11 and the needle cylinder seat 20 in the vertical direction, as shown in the right side of Figure 5 When the needle cylinder seat 20 is embedded into the buckling part 11 from bottom to top, the push block 24 is pushed to make the buckling groove 23 buckled with the buckling block 12, so as to lock the relative position of the buckling part 11 and the needle cylinder seat 20 in the vertical direction, as shown in the right side of

[0005] The problem is that the push block 24 is exposed outside, and the movement track of the push block 24 is only a smooth arc. During the operation, the push block 24 may be accidentally touched due to various reasons, so that the buckling groove 23 is separated from the buckling block 12. As mentioned above, the object of the high-pressure injector is the human body, and if the needle cylinder 30 is loose during the injection process, it may cause life-threatening consequences. SUMMARY

[0006] The high-pressure injector aims to solve the problems existing in the prior art.

[0007] The high-pressure injector comprises a main machine and a needle cylinder seat.

[0008] The main machine is provided with a buckling part matched with the needle cylinder seat.

[0009] The front end face of the needle cylinder seat is used for installing a needle cylinder 30, and the rear end face is used for detachably connecting with the buckling part.

[0010] The end of the buckling piece away from the rotating shaft is provided with a free sliding rod, and the free end of the sliding rod is provided with a limiting block.

[0011] The side face of the buckling part is provided with an insertion slot vertically above the buckling block.

[0012] The limiting block is used for limiting the sliding of the sliding piece on the length of the sliding rod.

[0013] The inner wall of the insertion slot and the outer wall of the insertion piece are gap-fitted.

[0014] The high-pressure injector has the advantages that the direction of separating the buckling slot and the buckling block is changed from single arc motion to radial movement and then arc motion, so that the exposed buckling piece cannot be accidentally touched to cause the needle cylinder to fall off and the like, and the safety of the operation is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the high-pressure injector in the prior art.

[0016] Figure 2 It is Figure 1 a schematic view of the use state of the high-pressure injector.

[0017] Figure 3 It is Figure 1 an assembly schematic view of the high-pressure injector.

[0018] Figure 4 It is Figure 3 a partial enlarged schematic view.

[0019] Figure 5 It isFigure 4 is a partial enlarged view of

[0020] Figure 6 is an assembly view of the high-pressure injector in the present application.

[0021] Figure 7 is a partial enlarged view of Figure 6

[0022] Figure 8 is a partial enlarged view of the high-pressure injector in the present application from another perspective.

[0023] Figure 9 is another partial enlarged view of Figure 6

[0024] Figure 10 is a structural view of the slide in the present application.

[0025] Reference signs:

[0026] 10 - main machine, 11 - buckling part, 12 - buckling block, 13 - slot;

[0027] 20 - needle cylinder seat, 21 - buckling sheet, 22 - rotating shaft, 23 - buckling groove, 24 - shifting block, 25 - slide rod, 26 - limiting block, 27 - slide, 28 - insertion sheet;

[0028] 30 - needle cylinder. DETAILED DESCRIPTION

[0029] As shown in Figures 6 to 10 , the high-pressure injector in the present application comprises a main machine 10 and a needle cylinder seat 20.

[0030] The main machine 10 is provided with a buckling part 11 which is adapted to the needle cylinder seat 20. The buckling part 11 is provided with a buckling block 12 near the end face of the needle cylinder seat 20.

[0031] The front end face of the needle cylinder seat 20 is used for installing a needle cylinder 30, and the rear end face is used for detachable connection with the buckling part 11. The rear end face of the needle cylinder seat 20 is provided with a rotating shaft 22, one end of which is fixedly installed in the needle cylinder seat 20, and the other end of which is rotatably connected with a buckling sheet 21. The buckling sheet 21 is provided with a buckling groove 23 in the middle part, and the relative position of a slide rod 25 is adapted to the buckling block 12.

[0032] The end of the buckling sheet 21 which is far away from the rotating shaft 22 is provided with a freely extending slide rod 25, and a limiting block 26 is arranged at the free end of the slide rod 25. A slide 27 is further arranged, one end of which is slidably connected with the slide rod 25, and the other end of which freely extends to the side of the buckling part 11 perpendicularly to the slide rod 25. The lower end face of the slide 27 is provided with an insertion sheet 28 which extends to the buckling part 11 in parallel to the slide rod 25. ​​

[0033] The side of the fastening part 11 is provided with a slot 13 vertically above the fastening block 12, the shape of the slot 13 is adapted to the shape of the insertion piece 28.

[0034] The limiting block 26 is used to limit the sliding piece 27 to slide along the length of the slide rod 25. The insertion piece 28 can be inserted into the slot 13 when the fastening groove 23 is fastened with the fastening block 12.

[0035] The inner wall of the slot 13 and the outer wall of the insertion piece 28 are in clearance fit.

[0036] The working principle is as follows:

[0037] When the needle cylinder seat 20 needs to be installed, the needle cylinder seat 20 is inserted into the fastening part 11 from bottom to top, the limiting block 26 is pushed, the fastening groove 23 is fastened with the fastening block 12, and the relative position of the fastening part 11 and the needle cylinder seat 20 in the longitudinal direction is locked. At this time, the insertion piece 28 naturally falls into the slot 13, as shown in Figure 9 .

[0038] When the needle cylinder seat 20 needs to be disassembled, the insertion piece 28 is first lifted to disengage from the slot 13. Then the sliding piece 27 and the limiting block 26 are pushed at the same time, the fastening groove 23 is separated from the fastening block 12, and the relative position of the fastening part 11 and the needle cylinder seat 20 in the longitudinal direction is unlocked, as shown in Figure 7 and Figure 8 . Finally, the needle cylinder seat 20 is separated from the fastening part 11 from top to bottom.

[0039] For those skilled in the art, various corresponding changes and modifications can be made according to the technical solutions and concepts described above, and all these changes and modifications should belong to the protection scope of the claims of the present application.

Claims

1. A high-pressure syringe, comprising a main machine (10) and a needle cylinder seat (20); The main machine (10) is provided with a buckle part (11) matched with the needle cylinder seat (20); the buckle part (11) is provided with a buckle block (12) near the end face of the needle cylinder seat (20); The front end face of the needle cylinder seat (20) is used for installing a needle cylinder (30), and the rear end face is used for detachably connecting with the buckle part (11); the rear end face of the needle cylinder seat (20) is provided with a rotating shaft (22), one end of the rotating shaft (22) is fixedly installed in the needle cylinder seat (20), and the other end of the rotating shaft (22) is rotatably connected with a buckle sheet (21); the buckle sheet (21) is provided with a buckle groove (23) in the middle part, and the relative position of a sliding rod (25) is matched with the buckle block (12); Characterized in that, The end of the buckle sheet (21) away from the rotating shaft (22) is provided with a freely extending sliding rod (25), a limiting block (26) is arranged at the free end of the sliding rod (25); a sliding sheet (27) is further arranged, one end of the sliding sheet (27) is slidably connected with the sliding rod (25), and the other end of the sliding sheet (27) freely extends to the side of the buckle part (11) perpendicularly to the sliding rod (25); an insertion sheet (28) is arranged on the lower end face of the sliding sheet (27), and the insertion sheet (28) extends to the buckle part (11) in parallel to the sliding rod (25); The side of the buckle part (11) is provided with an insertion groove (13) vertically above the buckle block (12), and the shape of the insertion groove (13) is matched with the insertion sheet (28); The limiting block (26) is used for limiting the sliding sheet (27) to slide on the length of the sliding rod (25); when the buckle groove (23) and the buckle block (12) are buckled, the insertion sheet (28) can be inserted into the insertion groove (13).

2. A high pressure syringe as defined in claim 1, wherein The inner wall of the insertion groove (13) and the outer wall of the insertion sheet (28) are gap matched.

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