Connection device for self-adapting connection to a high-pressure syringe and high-pressure syringe

Abstract

The utility model discloses a kind of connecting device and high-pressure injector for being connected with high-pressure needle cylinder self-adaptive, the connecting device includes the mounting seat connected on high-pressure injector, the both sides of the mounting seat are provided with movable piston chuck, and the inside of the piston chuck is connected with the mounting seat between elastic member;The high-pressure injector includes the connecting device.The utility model is applied to the technical field of high-pressure injector.

Description

Technical Field

[0001] This utility model relates to the technical field of high-pressure injectors, and in particular to a connecting device for adaptive connection with a high-pressure syringe and a high-pressure injector. Background Technology

[0002] Currently, such as Figure 1 As shown, the installation of the high-pressure syringe includes the positioning assembly of the syringe body 100 and the fixing assembly of the syringe piston 101. The installation method of the syringe body 100 is consistent throughout. However, the dimensions of the syringe piston 101 used to fix and pull the syringe piston 101 vary depending on the manufacturer. Figure 2 As shown, before the fixed piston 102 of the syringe is connected to the piston clamp 103, the size L of the fixed piston 102 needs to be determined first, and then a matching size D needs to be designed on the piston clamp 103. In this way, the syringe with the fixed piston 102 of this size can be connected to the piston clamp 103 for use in a high-pressure injector. However, since the fixed piston 102 of different syringes has different sizes, when the piston size L changes, the piston clamp 103 also needs to be changed accordingly. Otherwise, it will not be able to adapt, or it will require repeated confirmation, affecting efficiency and resulting in poor versatility. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art. The first objective is to provide a connection device that is easy to use and has good versatility for adaptive connection with high-pressure syringes.

[0004] The second objective of this invention is to provide a high-pressure injector that is easy to use and has good versatility.

[0005] The technical solution adopted by this utility model is as follows: the connecting device includes a mounting base connected to the high-pressure injector, and movable piston clamps are provided on both sides of the mounting base. An elastic element is connected between the inner side of the piston clamp and the mounting base.

[0006] Furthermore, both ends of the mounting base are provided with clearance grooves, and the two piston clamps extend into the two clearance grooves respectively.

[0007] Furthermore, the piston chuck includes a clamping block and a guide seat. The guide seat is adapted to the clearance groove and extends into the clearance groove. The guide seat is provided with a mounting groove, and a shaft is provided in the mounting groove. The end of the shaft extends into the clearance groove. The elastic element is sleeved on the shaft. When the clamping block is subjected to force, the inner side of the clamping block abuts against the inner side of the mounting seat.

[0008] Furthermore, the outer side of the clamping block has an arc-shaped pushing surface.

[0009] Furthermore, the mounting base is provided with a cavity communicating between the two clearance grooves, the end of the shaft extends into the cavity and is connected to a limiting member, one end of the elastic member abuts in the mounting groove, and the other end of the elastic member abuts in the clearance groove.

[0010] Furthermore, the limiting component is a retaining ring.

[0011] Furthermore, the mounting base is fixedly connected to the high-pressure injector via a connector.

[0012] In addition, this utility model also provides a high-pressure injector, which includes the aforementioned connecting device.

[0013] The beneficial effects of this utility model are:

[0014] In contrast to the shortcomings of existing technologies, this invention, through the design of the piston clamp and elastic element, enables the connecting device to adapt to the size of the fixed piston of high-pressure syringes of different sizes. This allows for the adaptive installation of universal high-pressure syringes using the same structure, reducing the mixing of different types during production and assembly and improving the versatility of high-pressure injectors. Consequently, the connecting device possesses the advantages of ease of use and high versatility. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the syringe body and syringe piston in the prior art;

[0017] Figure 2 This is a three-dimensional structural diagram of a fixed piston and piston chuck in the prior art;

[0018] Figure 3 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 4 This is a three-dimensional structural diagram of the fixed piston and high-pressure injector of this utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of this utility model.

[0021] The attached figures are labeled as follows:

[0022] 100. Syringe body; 101. Syringe piston; 102. Fixed piston; 103. Piston clamp;

[0023] 1. Fixed piston; 2. High-pressure injector; 3. Mounting base; 5. Piston chuck; 6. Elastic element; 7. Clearance groove; 8. Clamping block; 9. Guide seat; 10. Mounting groove; 11. Shaft; 12. Arc-shaped push surface; 13. Chamber; 15. Limiting element; 16. Connecting element.

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that all directional indicators in this utility model embodiment, such as up, down, left, right, front, back, clockwise, counterclockwise, etc., are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0027] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0028] like Figures 3 to 5 As shown, in this embodiment, the connecting device includes a mounting base 3 connected to the high-pressure injector 2. Movable piston clamps 5 are provided on both sides of the mounting base 3. An elastic element 6 connects the inner side of each piston clamp 5 to the mounting base 3. The piston clamp 5 moves away from the mounting base 3 under the push of the elastic element 6. The elastic element 6 is a compression spring.

[0029] When installing the high-pressure syringe, the connecting device needs to be connected to the fixed piston 1 of the high-pressure syringe. Specifically, the mounting base 3 is inserted into the clamp of the fixed piston 1. During this process, the piston clamps 5 on both sides of the mounting base 3 are compressed and the elastic element 6 is compressed. After the syringe is installed in place, the piston clamps 5 are pressed against the clamp of the fixed piston 1 by the elastic force of the elastic element 6, so as to install the high-pressure syringe onto the high-pressure injector. The high-pressure syringe mentioned above is a high-pressure injector syringe suitable for use in contrast imaging.

[0030] In contrast to the shortcomings of existing technologies, this invention, through the arrangement of piston clamp 5 and elastic element 6, enables the connecting device to adapt to the size of the fixed piston 1 of high-pressure syringes of different sizes, realizing the adaptive installation of universal high-pressure syringes with the same structure, reducing the mixing of different types during production and assembly and improving the versatility of high-pressure injectors. This gives the connecting device the advantages of ease of use and good versatility.

[0031] In some embodiments, both ends of the mounting base 3 are provided with clearance grooves 7, and the two piston clamps 5 extend into the two clearance grooves 7 respectively. Specifically, the clearance grooves 7 are used to allow the piston clamps 5 to extend and retract.

[0032] In some embodiments, the piston chuck 5 includes a clamping block 8 and a guide seat 9. The guide seat 9 is adapted to the clearance groove 7 and extends into the clearance groove 7. The guide seat 9 is provided with a mounting groove 10, and a shaft 11 is provided in the mounting groove 10. The end of the shaft 11 extends into the clearance groove 7. The elastic member 6 is sleeved on the shaft 11. The inner side of the clamping block 8 abuts against the inner side of the mounting seat 3 when the clamping block 8 is under force. The outer side of the clamping block 8 has an arc-shaped pushing surface 12. Specifically, the arc-shaped pushing surface 12 facilitates the insertion of the clamping block 8 into the clamping jaws of the fixed piston 1.

[0033] In some embodiments, the mounting base 3 is provided with a chamber 13 communicating between the two clearance grooves 7. The end of the shaft 11 extends into the chamber 13 and is connected to a limiting member 15. One end of the elastic member 6 abuts in the mounting groove 10, and the other end of the elastic member 6 abuts in the clearance groove 7. The limiting member 15 is a snap ring. Each piston chuck 5 may be equipped with two shafts 11 and two elastic members 6, or other numbers, which are also within the scope of this utility model. Specifically, when the clamping block 8 is compressed by the elastic member 6 under force, the end of the shaft 11 continues to extend into the chamber 13; when the clamping block 8 is not under force and is pushed by the elastic member 6, the end of the shaft 11 moves in the opposite direction. Since the limiting member 15 can only move in the chamber 13, it abuts against the inner wall of the chamber 13 to limit the movement stroke of the shaft 11, so as to prevent the piston chuck 5 from disengaging from the mounting base 3.

[0034] In some embodiments, the mounting base 3 is fixedly connected to the high-pressure injector 2 via a connector 16. Specifically, the mounting base 3 is fixedly connected to the high-pressure injector 2 by two screws to form a whole.

[0035] Furthermore, this utility model also provides a high-pressure injector, which includes the aforementioned connecting device. Specifically, the specific structure of the connecting device is as described in the above embodiments. Since the connecting device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be elaborated further here.

[0036] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A connecting device for adaptive connection with a high-pressure syringe, wherein the device is used to connect with a fixed piston (1) of the high-pressure syringe, characterized in that: It includes a mounting base (3) connected to a high-pressure injector (2), and movable piston chucks (5) are provided on both sides of the mounting base (3). An elastic element (6) is connected between the inner side of the piston chuck (5) and the mounting base (3).

2. The connecting device according to claim 1, characterized in that: Both ends of the mounting base (3) are provided with clearance grooves (7), and the two piston clamps (5) extend into the two clearance grooves (7) respectively.

3. The connecting device according to claim 2, characterized in that: The piston chuck (5) includes a clamping block (8) and a guide seat (9). The guide seat (9) is adapted to the relief groove (7). The guide seat (9) extends into the relief groove (7). The guide seat (9) is provided with a mounting groove (10). The mounting groove (10) is provided with a shaft (11). The end of the shaft (11) extends into the relief groove (7). The elastic element (6) is sleeved on the shaft (11). The inner side of the clamping block (8) abuts against the inner side of the mounting seat (3) when the clamping block (8) is under force.

4. The connecting device according to claim 3, characterized in that: The outer side of the clamp (8) has an arc-shaped push surface (12).

5. The connecting device according to claim 3, characterized in that: The mounting base (3) is provided with a chamber (13) communicating between the two clearance grooves (7). The end of the shaft (11) extends into the chamber (13) and is connected to a limiting member (15). One end of the elastic member (6) abuts in the mounting groove (10), and the other end of the elastic member (6) abuts in the clearance groove (7).

6. The connecting device according to claim 5, characterized in that: The limiting component (15) is a retaining ring.

7. The connecting device according to claim 1, characterized in that: The mounting base (3) is fixedly connected to the high-pressure injector (2) via a connector (16).

8. A high-pressure injector, characterized in that: It includes the connecting device as described in any one of claims 1-7.

Images