A needle cylinder quick dismounting structure for CT high pressure injector

Abstract

The utility model discloses a needle cylinder quick dismounting structure for CT high pressure injector belongs to medical equipment technical field, including injector upper cover and two injection cylinders, two injection cylinders can be detachably connected in the top of injector upper cover, the top wall fixedly connected with the connecting plate of injector upper cover, the bottom fixedly connected with two connecting heads of connecting plate, and the bottom of two injection cylinders is in two connecting heads respectively located in the injector upper cover and connecting plate and is sequentially penetrated, and the circumference surface of two injection cylinders is fixedly connected with the limit protruding and the plug protruding, and two groups of clamping blocks are arranged in the connecting plate, the dismounting structure of the utility model is applied to the connection of needle cylinder on CT high pressure injector, and the needle cylinder can be quickly installed and fixed through the direct insertion mode, the fixedness can be cancelled through the mode of twisting and pulling out, the needle cylinder is quickly pulled out and dismounted, the dismounting mode is simple, the dismounting process time is short, the operation can be quickly carried out, and the medical staff uses conveniently.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and more specifically, to a quick disassembly and assembly structure for a CT high-pressure injector. Background Technology

[0002] CT high-pressure injectors are auxiliary devices in radiological diagnostic and treatment systems, mainly used for contrast examinations in medical imaging. By injecting contrast agents into the patient's body, lesions can be observed and diagnosed more clearly. In clinical applications, CT high-pressure injectors are widely used in a variety of medical imaging techniques.

[0003] Currently, common CT high-pressure injectors are usually equipped with two syringes: one for injecting contrast agent and the other for pushing saline solution to prevent vascular blockage. However, most existing CT high-pressure injectors use threaded connections for the syringes, requiring medical staff to precisely rotate the syringes to align with the mounting ports. This slow assembly and disassembly process makes it inconvenient for medical staff to use. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a quick disassembly and assembly structure for the syringe of a CT high-pressure injector. This aims to solve the problem that the syringes of existing CT high-pressure injectors are usually installed by threaded connection, requiring medical staff to precisely rotate the syringe to the corresponding installation port, resulting in slow disassembly and assembly speed, inability to achieve quick disassembly and assembly, and inconvenience for medical staff.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution:

[0008] A quick-release syringe structure for a CT high-pressure injector includes an injector cap and two syringes. Both syringes are detachably connected to the top of the injector cap. A connecting plate is fixedly connected to the top wall of the injector cap, and two connectors are fixedly connected to the bottom end of the connecting plate. The bottom ends of the two syringes sequentially penetrate the injector cap and the connecting plate, respectively located within the two connectors. Limiting protrusions and insertion protrusions are fixedly connected to the circumferential surfaces of both syringes. Two sets of locking blocks are provided within the connecting plate, and the two sets of locking blocks respectively engage with the two syringes. Each of the two connectors has two rotating rings rotatably connected to it, and each of the two rotating rings has a toothed groove on its inner circumference. The two insertion protrusions are respectively inserted into the two sets of toothed grooves. The connecting plate and the connector are provided with two sets of limiting mechanisms. Each of the two connectors is provided with an unfolding mechanism between itself and the two rotating rings. The two sets of limiting mechanisms are used to control the two sets of locking blocks to lock and limit the two syringes respectively. The two sets of unfolding mechanisms are used to control the two sets of limiting mechanisms to release the two sets of locking blocks from limiting the two syringes respectively.

[0009] As a preferred embodiment of this utility model, each group of four card blocks is provided, and each group of four card blocks is slidably connected to the connecting plate and is distributed equidistantly in a circle. Each group of four card blocks corresponds to a limiting protrusion.

[0010] As a preferred embodiment of this utility model, each set of limiting mechanisms includes four sliding grooves, four sliding openings, four through-posts, four receiving grooves, four rolling sleeves, and four spring groups. The four sliding grooves are all located on the connecting plate, and a set of four locking blocks are slidably connected to the four sliding grooves. The four sliding openings are all located at the bottom end of the connecting plate, and each opening communicates with one of the four sliding grooves. The four through-posts are fixedly connected to the bottom ends of a set of four injection cylinders, and each through-post movably passes through one of the four sliding openings. The four receiving grooves are all located on a connecting head, and the four rolling sleeves are slidably connected to the four receiving grooves. Each receiving groove is rotatably connected to the circumferential surface of the four through-posts. The four spring groups are located within the four sliding grooves, and each spring group corresponds to one of the four locking blocks.

[0011] As a preferred embodiment of this utility model, each set of the unfolding mechanism includes two arc-shaped grooves, two tension springs and four top sleeve protrusions. The two arc-shaped grooves are opened on a connecting head, the two tension springs are respectively disposed in the two arc-shaped grooves, and one end of each tension spring is fixedly connected to a rotating ring and distributed in parallel. The four top sleeve protrusions are fixedly connected to the circumferential surface of a rotating ring, and the four top sleeve protrusions correspond to the four rolling sleeves respectively.

[0012] As a preferred embodiment of this utility model, limiting plates are fixedly connected to the circumferential surfaces of both syringes, and both limiting plates are located on the upper side of the syringe cap.

[0013] 3. Beneficial effects

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] (1) In this design, the syringe cap is the top cap of the CT high-pressure injector. Two syringes are inserted through the syringe cap and connecting plate into two connectors to connect with the CT high-pressure injector. After the syringes are inserted into the CT high-pressure injector, two sets of limiting mechanisms use two locking blocks and two limiting protrusions to limit the syringes, quickly fixing them inside the CT high-pressure injector. When the syringes need to be removed, they are turned counterclockwise. The two syringes rotate through the two insertion protrusions and two locking grooves, causing the two rotating rings to rotate. The rotating ring controls two sets of limiting mechanisms through two sets of unfolding mechanisms, causing the two sets of limiting mechanisms to drive the two sets of locking blocks to unfold outward, removing the restriction on the two syringes and allowing them to be quickly removed. The twisting and pulling method prevents the two syringes from being accidentally pulled out. This disassembly and assembly structure is used for connecting syringes on CT high-pressure injectors. The syringes can be quickly installed and fixed by direct insertion, and the fixing can be removed by twisting and pulling out, allowing the syringes to be quickly pulled out and disassembled. The disassembly and assembly method is simple, the disassembly and assembly process is short, and the operation can be performed quickly, making it convenient for medical staff to use. Attached Figure Description

[0016] Figure 1 This is the front view of the present invention;

[0017] Figure 2 This is a perspective view of the present utility model;

[0018] Figure 3 This is a cross-sectional view of the present invention;

[0019] Figure 4 This is an exploded view of the present invention;

[0020] Figure 5 This is a structural diagram of the injection cylinder in this utility model;

[0021] Figure 6 This is a structural diagram of the connecting plate and the connector in this utility model;

[0022] Figure 7 This is a structural diagram of the connecting plate in this utility model;

[0023] Figure 8 This is a structural diagram of the connector in this utility model.

[0024] Explanation of the labels in the diagram:

[0025] 1. Syringe cap; 2. Connecting plate; 3. Connector; 4. Syringe; 5. Limiting protrusion; 6. Insertion protrusion; 7. Locking block; 8. Rotating ring; 9. Locking tooth groove; 101. Sliding groove; 102. Sliding port; 103. Through-hole; 104. Receiving groove; 105. Roller sleeve; 106. Spring assembly; 111. Arc groove; 112. Tension spring; 113. Top sleeve protrusion; 12. Limiting plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Example:

[0030] Please see Figure 1-8A quick-release syringe structure for a CT high-pressure injector includes an injector cap 1 and two syringes 4. Both syringes 4 are detachably connected to the top of the injector cap 1. A connecting plate 2 is fixedly connected to the top wall of the injector cap 1. Two connectors 3 are fixedly connected to the bottom end of the connecting plate 2. The bottom ends of the two syringes 4 pass through the injector cap 1 and the connecting plate 2, respectively located within the two connectors 3. Limiting protrusions 5 and insertion protrusions 6 are fixedly connected to the circumferential surfaces of both syringes 4. Two sets of locking blocks 7 are provided inside the connecting plate 2. Do not engage with the two limiting protrusions 5. Each of the two connectors 3 is rotatably connected to two rotating rings 8. The inner circumference of each of the two rotating rings 8 is provided with a toothed groove 9, and the two insertion protrusions 6 are respectively inserted into the two sets of toothed grooves 9. The connecting plate 2 and the connector 3 are provided with two sets of limiting mechanisms. Each of the two connectors 3 is provided with a set of unfolding mechanisms between itself and the two rotating rings 8. The two sets of limiting mechanisms are used to control the two sets of locking blocks 7 to lock and limit the two syringes 4 respectively. The two sets of unfolding mechanisms are used to control the two sets of limiting mechanisms to release the two sets of locking blocks 7 from locking the two syringes 4 respectively.

[0031] In this embodiment, the syringe cover 1 is installed at the upper end of the CT high-pressure injector. The connecting plate 2 and the two connectors 3 are located inside the CT high-pressure injector. The two connectors 3 correspond to the drug delivery pump of the CT high-pressure injector. The bottom ends of the two syringes 4 pass through the syringe cover 1 and the connecting plate 2 and enter the two connectors 3, corresponding to the piston of the drug delivery pump of the CT high-pressure injector. When the two syringes 4 are installed, the bottom ends of the two syringes 4 are vertically inserted into the syringe cover 1, and the bottom ends of the two syringes 4 pass through the syringe cover 1 and the connecting plate 2 and enter the two connectors 3 respectively. The two sets of locking blocks 7 in the two connecting plates 2 respectively connect to the two syringes. The two limiting protrusions 5 on the syringe 4 correspond to each other, and the two sets of limiting mechanisms respectively make the two sets of locking blocks 7 engage with the two limiting protrusions 5, realizing the quick installation of the two syringes 4. At the same time, the two insertion protrusions 6 are respectively inserted into the two locking tooth grooves 9 opened in the two rotating rings 8. When the two syringes 4 need to be disassembled, by twisting the two syringes 4 counterclockwise, the two syringes 4 drive the two rotating rings 8 to rotate through the two insertion protrusions 6 and the two locking tooth grooves 9. The two rotating rings 8 push the two sets of locking blocks 7 to unfold through the two sets of unfolding mechanisms, so that the two sets of locking blocks 7 can be released from the two limiting protrusions 5, thereby making the two syringes 4 easy to pull out for disassembly.

[0032] Specifically, each group of four card blocks 7 is set to slide within the connecting plate 2 and is distributed equidistantly in a circle. Each group of four card blocks 7 corresponds to a limiting protrusion 5.

[0033] In this embodiment, when the syringe 4 is inserted into the connector 3, the limiting protrusion 5 will push a set of four locking blocks 7 outward. After the syringe 4 is fully inserted, a set of limiting mechanisms controls the set of four locking blocks 7 to move closer together. The set of four locking blocks 7 move closer together and achieve locking and limiting at the upper end of the limiting protrusion 5.

[0034] Specifically, each set of limiting mechanisms includes four sliding grooves 101, four sliding openings 102, four through-posts 103, four receiving grooves 104, four rolling sleeves 105, and four spring groups 106. The four sliding grooves 101 are all opened on the connecting plate 2, and a set of four locking blocks 7 are slidably connected to the four sliding grooves 101 respectively. The four sliding openings 102 are all opened at the bottom end of the connecting plate 2, and the four sliding openings 102 are respectively connected to the four sliding grooves 101. The four through-posts 103 are respectively fixedly connected to the bottom end of a set of four injection cylinders 4, and the four through-posts 103 are respectively movable through the four sliding openings 102. The four receiving grooves 104 are all opened on a connector 3. The four rolling sleeves 105 are respectively slidably connected to the four receiving grooves 104, and the four receiving grooves 104 are rotatably connected to the circumferential surface of the four through-posts 103. The four spring groups 106 are respectively located in the four sliding grooves 101, and the four spring groups 106 are respectively corresponding to a set of four locking blocks 7.

[0035] In this embodiment, a set of four locking blocks 7 are slidably connected in four sliding grooves 101. When the syringe 4 is inserted into the CT high-pressure injector, the syringe 4 pushes open the four locking blocks 7 through the limiting protrusion 5. The four locking blocks 7 slide in the four sliding grooves 101 and press against the four spring groups 106. At the same time, the four locking blocks 7 drive the four through posts 103 to slide in the four sliding ports 102. The four through posts 103 drive the four roller sleeves 105 to slide in the receiving grooves 104. The four roller sleeves 105 are rotatably connected to the surface of the four receiving grooves 104 located on the lower side of the connecting plate 2, which can prevent the set of four locking blocks 7 from disengaging and keep the set of four locking blocks 7 stable in the four sliding grooves 101. When the bottom connection of the syringe 4 is fully inserted into the CT high-pressure injector, the limiting protrusion 5 is located on the lower side of the four locking blocks 7. The four spring groups 106 push the set of four locking blocks 7 closer together through their own elasticity. The set of four locking blocks 7 moves on the upper side of the limiting protrusion 5, thereby achieving locking and limiting of the syringe 4.

[0036] Specifically, each set of unfolding mechanisms includes two arc-shaped grooves 111, two tension springs 112, and four top sleeve protrusions 113. The two arc-shaped grooves 111 are both opened on a connector 3. The two tension springs 112 are respectively set in the two arc-shaped grooves 111, and one end of each tension spring 112 is fixedly connected to a rotating ring 8 and distributed in parallel. The four top sleeve protrusions 113 are all fixedly connected to the circumferential surface of a rotating ring 8, and the four top sleeve protrusions 113 correspond to the four rolling sleeves 105 respectively.

[0037] In this embodiment, after the syringe 4 is inserted into the CT high-pressure injector, the insertion protrusion 6 is inserted into the retaining groove 9 inside the rotating ring 8. When the syringe 4 needs to be removed, the syringe 4 is turned counterclockwise. The syringe 4 drives the rotating ring 8 to rotate through the insertion protrusion 6 and the retaining groove 9. The rotating ring 8 drives the four top sleeve protrusions 113 to rotate. When the four top sleeve protrusions 113 rotate, they will push open the four roller sleeves 105, causing the four roller sleeves 105 to retract into the four receiving grooves 104 respectively. This will drive a set of four retaining blocks 7 to move outward and unfold, canceling the retaining of the limiting protrusions 5, so that the syringe 4 can be quickly pulled out for disassembly. During the rotation of the rotating ring 8, the two tension springs 112 in the two arc grooves 111 apply tension to the rotating ring 8, so that the rotation of the rotating ring 8 has a certain resistance. This makes it easy to confirm that the syringe 4 has rotated to the required pull-out position, prevents the rotating ring 8 from rotating excessively, and can also pull the rotating ring 8 to reset after rotation.

[0038] Specifically, limiting pieces 12 are fixedly connected to the circumferential surfaces of both syringes 4, and both limiting pieces 12 are located on the upper side of the syringe cover 1.

[0039] In this embodiment, the limiting piece 12 is used to limit the insertion depth of the two syringes 4 into the CT high-pressure injector, so that the two syringes 4 are kept in the desired position.

[0040] Working principle: The syringe cap 1 is fixed to the bottom of the CT high-pressure injector. The syringe cap 1 and the two connectors 3 are located inside the CT high-pressure injector and correspond to the drug delivery pump. The bottom ends of the two syringes 4 pass through the syringe cap 1 and the connecting plate 2 and enter the two connectors 3 respectively to push the contrast agent and saline. During the insertion of the two syringes 4 into the CT high-pressure injector, the limiting protrusions 5 on each syringe 4 will push open a set of four locking blocks 7, causing the set of four locking blocks 7 to slide away in the four sliding grooves 101. The set of four locking blocks 7 respectively drive the four through posts 103 to slide in the four sliding ports 102. The four through posts 103 respectively drive the four rollers 105 to slide in the four receiving grooves 104, ensuring the stability of the movement of the set of four locking blocks 7. At the same time, the set of four locking blocks 7 compresses the four spring groups 106. When the syringe 4 is fully inserted into the CT high-pressure injector, the insertion protrusion 6 is inserted into the locking tooth groove 9 opened in the rotating ring 8. The limiting protrusion 5 will be located in the set of four On the lower side of the locking block 7, the elastic force of the four spring groups 106 brings the four locking blocks 7 closer together. The four locking blocks 7 move to the upper side of the limiting protrusion 5 to achieve locking, stabilizing the syringe 4 inside the CT high-pressure injector and preventing accidental removal. When the syringe 4 needs to be removed, rotating the syringe 4 counterclockwise causes the syringe 4 to rotate through the insertion protrusion 6 and the locking tooth groove 9, driving the rotating ring 8 to rotate. The two tension springs 112 in the two arc-shaped grooves 111 apply tension to the rotating ring 8, preventing the rotating ring from rotating. 8. Over-rotation causes the rotating ring 8 to rotate to the required angle. At the required angle, the rotating ring 8 causes the four top sleeve protrusions 113 to push open the four roller sleeves 105. The four roller sleeves 105 retract in the four receiving grooves 104 respectively, thereby driving the four through posts 103 to slide in the four sliding ports 102. The four through posts 103 drive a set of four locking blocks 7 to move away from each other in the four sliding grooves 101, so that the set of four locking blocks 7 can remove the restriction on the limiting protrusions 5, and the injection cylinder 4 can be quickly pulled out and removed.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A quick-release syringe structure for a CT high-pressure injector, comprising an injector cap (1) and two syringes (4), characterized in that: Both syringes (4) are detachably connected to the top of the syringe cover (1). A connecting plate (2) is fixedly connected to the top wall of the syringe cover (1). Two connectors (3) are fixedly connected to the bottom end of the connecting plate (2). The bottom ends of the two syringes (4) pass through the syringe cover (1) and the connecting plate (2) respectively and are located in the two connectors (3). Limiting protrusions (5) and insertion protrusions (6) are fixedly connected to the circumferential surfaces of the two syringes (4). Two sets of locking blocks (7) are provided in the connecting plate (2), and the two sets of locking blocks (7) are respectively engaged with the two limiting protrusions (5). Two rotating rings (8) are rotatably connected inside the connector (3). The inner circumference of the two rotating rings (8) is provided with a tooth groove (9), and two insertion protrusions (6) are respectively inserted into the two sets of tooth grooves (9). Two sets of limiting mechanisms are provided in the connecting plate (2) and the connector (3). A set of unfolding mechanisms is provided between the two connectors (3) and the two rotating rings (8). The two sets of limiting mechanisms are used to control the two sets of locking blocks (7) to lock and limit the two syringes (4). The two sets of unfolding mechanisms are used to control the two sets of limiting mechanisms to cancel the two sets of locking blocks (7) from limiting the two syringes (4).

2. The quick-release and disassembly structure for a CT high-pressure injector according to claim 1, characterized in that: Each group of four card blocks (7) is provided. Each group of four card blocks (7) is slidably connected to the connecting plate (2) and is distributed equidistantly in a circle. Each group of four card blocks (7) corresponds to a limiting protrusion (5).

3. The quick-release and disassembly structure for a syringe used in a CT high-pressure injector according to claim 2, characterized in that: Each set of limiting mechanisms includes four sliding grooves (101), four sliding openings (102), four through posts (103), four receiving grooves (104), four rolling sleeves (105), and four spring sets (106). The four sliding grooves (101) are all located on the connecting plate (2), and a set of four locking blocks (7) are slidably connected to the four sliding grooves (101). The four sliding openings (102) are all located at the bottom end of the connecting plate (2), and the four sliding openings (102) are respectively connected to the four sliding grooves (101). The four through posts (103) are respectively connected to the four sliding grooves (106). The four syringes (4) are fixedly connected to the bottom of the four syringes (4), and the four through-posts (103) are movably connected through the four slides (102). The four receiving grooves (104) are all opened on a connector (3). The four rollers (105) are slidably connected in the four receiving grooves (104), and the four receiving grooves (104) are rotatably connected to the circumferential surface of the four through-posts (103). The four spring groups (106) are located in the four slides (101), and the four spring groups (106) correspond to a set of four locking blocks (7).

4. The quick-release and disassembly structure for a syringe used in a CT high-pressure injector according to claim 3, characterized in that: Each set of the unfolding mechanism includes two arc grooves (111), two tension springs (112) and four top sleeve protrusions (113). The two arc grooves (111) are opened on a connector (3). The two tension springs (112) are respectively set in the two arc grooves (111), and one end of the two tension springs (112) is fixedly connected to a rotating ring (8) and distributed in parallel. The four top sleeve protrusions (113) are fixedly connected to the circumferential surface of a rotating ring (8), and the four top sleeve protrusions (113) correspond to the four rolling sleeves (105) respectively.

5. The quick-release and disassembly structure of the syringe for a CT high-pressure injector according to claim 4, characterized in that: Both syringes (4) have a limiting piece (12) fixedly connected to their circumferential surfaces, and both limiting pieces (12) are located on the upper side of the syringe cap (1).

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