High-pressure radiography injection needle cylinder

Abstract

The utility model relates to the technical field of medical instruments, in particular to a high-pressure radiography injection needle cylinder. The high-pressure radiography injection needle cylinder comprises a needle cylinder body, clamping blocks, a liquid outlet, a threaded sleeve, a piston, a fixing ring, a fixing block, a rotating ring, a rotating block and a first torsion spring, the right side of the needle cylinder body is vertically and symmetrically connected with the clamping blocks, and the left end of the needle cylinder body is connected with the liquid outlet. A threaded sleeve is connected to the left end of the needle cylinder body and located on the outer side of the liquid outlet, a piston is connected to the right end in the needle cylinder body, a fixing ring is connected to the right side of the needle cylinder body, and three fixing blocks are evenly connected to the outer side of the fixing ring. The clamping block and the needle cylinder base of the high-pressure injector are fixed through a rotary buckle structure, and on the basis, the mode that the rotating block abuts against the needle cylinder base is added, so that a double-locking mechanism is achieved, it is guaranteed that the needle cylinder and the needle cylinder base are connected more firmly, and the risk that a needle cylinder body loosens or falls off in the high-pressure injection process is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially, relates to a high pressure contrast injection needle cylinder. BACKGROUND

[0002] High pressure contrast injection needle cylinder is a kind of equipment specially designed for medical imaging examination, mainly used to inject contrast agent into patient's body (such as intravascular), so that clearer image can be obtained in imaging technology such as X-ray, CT (computed tomography), MRI (magnetic resonance imaging). The characteristics of this needle cylinder are that it can withstand high pressure, and ensure that contrast agent can be injected into the body quickly and safely.

[0003] The connection between needle cylinder and high-pressure injector generally adopts buckle type connection, mainly push-in type clamping and rotary type clamping. However, these two fixing methods have certain defects:

[0004] 1. The push-in type clamping method, during high-pressure injection, the needle cylinder is easily affected by external force due to the large injection pressure, resulting in loosening or falling off, and the friction surface between the buckle and the needle cylinder seat may be worn after long-term use, resulting in loose connection.

[0005] 2. The rotary type clamping method, if the rotation angle is insufficient, the needle cylinder may not be completely locked, resulting in loosening, and some rotary type clamping designs may have defects, such as insufficient tightness of the buckle and the groove, resulting in loose connection.

[0006] Therefore, in order to improve the stability of the connection between the needle cylinder and the high-pressure injector, reduce the risk of loosening or falling off of the needle cylinder during high-pressure injection, additional reinforcing components are needed to improve the connection method, which can significantly improve the connection strength and sealing performance of the needle cylinder, ensuring the safety and reliability of the injection process. INVENTION CONTENTS

[0007] In order to overcome the above-mentioned shortcomings, the technical problem to be solved is to provide a high pressure contrast injection needle cylinder.

[0008] The technical scheme is as follows: a high pressure contrast injection needle cylinder, comprising a needle cylinder body, a clamping block, a liquid outlet, a threaded sleeve, a piston, a fixed ring, a fixed block, a rotating ring, a rotating block and a first torsion spring, the clamping block is symmetrically connected to the right side of the needle cylinder body, the liquid outlet is connected to the left end of the needle cylinder body, the threaded sleeve is connected to the position outside the liquid outlet at the left end of the needle cylinder body, the piston is connected to the right end inside the needle cylinder body, the fixed ring is connected to the right side of the needle cylinder body, three fixed blocks are uniformly connected to the outside of the fixed ring, the rotating blocks are rotatably connected to the fixed blocks, the first torsion springs are connected between the rotating blocks and the fixed blocks, the rotating ring is threadedly connected between the left sides of the three fixed blocks, the top surface of the rotating block is chamfered, and the rotating ring is in contact with the rotating block.

[0009] Further, the needle cylinder body is made of high transparent material, which facilitates observation of the flow of contrast agent and timely discovery of possible problems.

[0010] Further, the needle cylinder body is made of high transparent material, which facilitates observation of the flow of contrast agent and timely discovery of possible problems.

[0011] Further, the needle cylinder body is made of high transparent material, which facilitates observation of the flow of contrast agent and timely discovery of possible problems.

[0012] Further, the needle cylinder body is made of high transparent material, which facilitates observation of the flow of contrast agent and timely discovery of possible problems.

[0013] Further, the needle cylinder body is made of high transparent material, which facilitates observation of the flow of contrast agent and timely discovery of possible problems.

[0014] Beneficial effects: the clamping block and the needle cylinder seat of the high-pressure injector are fixed in a rotary buckle structure, and the rotating block is abutted with the needle cylinder seat, so that a double locking mechanism is realized, the connection between the needle cylinder and the needle cylinder seat is more firm, and the risk of loosening or falling of the needle cylinder body during high-pressure injection is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic diagram of the utility model.

[0016] Figure 2 It is a first partial cross-sectional view of the utility model.

[0017] Figure 3 It is a second partial cross-sectional view of the utility model.

[0018] Figure 4 It is a partial three-dimensional structure schematic diagram of the utility model.

[0019] Among them, the above-mentioned drawing includes the following sign: 1, needle cylinder body, 2, clamping block, 3, liquid outlet, 4, threaded sleeve, 5, piston, 6, anti-skid line, 7, fixed ring, 8, fixed block, 9, rotating ring, 10, rotating block, 11, first torsion spring, 12, support block, 13, second torsion spring, 14, movable block, 15, support ring, 16, return spring, 17, buffer ring, 18, compression spring, 19, buffer block. DETAILED DESCRIPTION

[0020] The technical solution will be further described below with reference to specific embodiments. It should be noted that the terms "up," "down," "left," and "right" used in this document refer only to the position of the structure shown in the corresponding drawings. The serial numbers assigned to components in this document, such as "first," "second," etc., are only used to distinguish the described objects and have no sequential or technical meaning. Unless otherwise specified, terms such as "connection" and "linkage" in this application include both direct and indirect connections (linkages).

[0021] Example: A high-pressure contrast injection syringe, such as Figures 1-3 As shown, the syringe includes a syringe body 1, a locking block 2, a liquid outlet 3, a threaded sleeve 4, a piston 5, anti-slip grooves 6, a fixing ring 7, a fixing block 8, a rotating ring 9, a rotating block 10, and a first torsion spring 11. The locking blocks 2 are integrally formed and symmetrically connected to the upper and lower right sides of the syringe body 1. The liquid outlet 3 is connected to the left end of the syringe body 1. A threaded sleeve 4 is connected to the left end of the syringe body 1 outside the liquid outlet 3. The piston 5 is connected to the right inner end of the syringe body 1. Three anti-slip grooves 6 are connected to the outer wall of the syringe body 1 to facilitate the operator's grip on the syringe. The syringe body 1 has a fixing ring 7 connected to its right side. Three fixing blocks 8 are evenly welded to the outside of the fixing ring 7. Each fixing block 8 is rotatably connected to a rotating block 10 for abutting against the syringe seat. Two first torsion springs 11 are connected between the rotating block 10 and the fixing block 8. A rotating ring 9 is threadedly connected between the left sides of the three fixing blocks 8. The top surface of the rotating block 10 is beveled. The rotating ring 9 contacts and engages with the rotating block 10. The syringe body 1 is made of highly transparent material, which facilitates observation of the flow of the contrast agent and timely detection of possible problems.

[0022] like Figure 1 and Figure 4 As shown, it also includes a support block 12, a second torsion spring 13 and a movable block 14. The support block 12 is symmetrically welded to the outside of the threaded sleeve 4. The movable block 14 is rotatably connected to the support block 12. The two movable blocks 14 form a ring structure, which is then used to limit the guide tube. Two second torsion springs 13 are connected between the movable block 14 and the support block 12.

[0023] like Figure 1 As shown, it also includes a support ring 15, a return spring 16, a buffer ring 17, a compression spring 18, and a buffer block 19. The support ring 15 is connected to the left side of the syringe body 1. The support ring 15 is connected to a buffer ring 17 for damping the syringe body 1 through multiple return springs 16. The right side of the fixing block 8 is connected to a buffer block 19 through two compression springs 18.

[0024] When the contrast agent is injected into the patient's body, the needle cylinder body 1 is first installed on the high-pressure injector device, and the clamping block 2 is fixed. The clamping block 2 at the right end of the needle cylinder body 1 is aligned with the needle cylinder seat of the high-pressure injector, and is aligned with the opening on the needle cylinder seat. Gently push the needle cylinder body 1 into the needle cylinder seat until the bottom of the needle cylinder body 1 contacts the needle cylinder seat. The piston 5 is connected to the high-pressure injector. Rotate the needle cylinder body 190 degrees clockwise. Feel the needle cylinder body 1 gradually clamped into the needle cylinder seat. Finally, hear or feel a "click" sound, indicating that the needle cylinder body 1 has been securely locked. Then rotate the rotating ring 9. The rotating ring 9 gradually moves to the right side, thereby pressing the rotating block 10 inward to abut against the needle cylinder seat. The first torsion spring 11 is compressed, and the needle cylinder body 1 is reinforced by the friction between the rotating block 10 and the needle cylinder seat, reducing the risk of the needle cylinder body 1 loosening or falling off. Then connect the catheter to the liquid outlet 3 through the threaded groove in the threaded sleeve 4. The movable block 14 can extend the threaded sleeve 4 to ensure the stability of the catheter connected to the liquid outlet 3. The second torsion spring 13 buffers the movable block 14 to match the shape of the catheter. Then, the needle cylinder body 1 is exhausted by the high-pressure injector. After exhausting, the medicine can be taken. After taking the medicine, the catheter is connected to the patient's indwelling needle, and the injection operation can be performed.

[0025] After the injection operation is completed, the needle cylinder body 1 needs to be disassembled. First, reverse the rotating ring 9 to move the rotating ring 9 to the left side to disengage the contact with the rotating block 10. The first torsion spring 11 rebounds and resets, driving the rotating block 10 to reverse and reset, thereby no longer abutting against the needle cylinder seat of the high-pressure injector. Then reverse the needle cylinder body 1 to drive the clamping block 2 to rotate and align with the opening of the needle cylinder seat, thereby disengaging the clamping, and completing the disassembly of the needle cylinder body 1.

[0026] In use, if the needle cylinder body 1 is accidentally dropped, the buffer block 19 and the buffer ring 17 first contact the ground. The return spring 16 and the compression spring 18 can absorb and disperse the impact force, reducing the physical damage of the needle cylinder body 1 caused by falling, such as cracks, deformation or rupture.

[0027] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can easily think of changes or substitutions within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A high-pressure contrast injection syringe, characterized in that, The syringe includes a syringe body (1), a locking block (2), a liquid outlet (3), a threaded sleeve (4), a piston (5), a fixing ring (7), a fixing block (8), a rotating ring (9), a rotating block (10), and a first torsion spring (11). The right side of the syringe body (1) is symmetrically connected with locking blocks (2). The left end of the syringe body (1) is connected with a liquid outlet (3). The left end of the syringe body (1) is connected with a threaded sleeve (4) located outside the liquid outlet (3). The right end of the syringe body (1) is... A piston (5) is connected to the syringe body (1). A fixing ring (7) is connected to the right side of the syringe body (1). Three fixing blocks (8) are evenly connected to the outside of the fixing ring (7). A rotating block (10) is rotatably connected to each fixing block (8). Two first torsion springs (11) are connected between the rotating block (10) and the fixing block (8). A rotating ring (9) is threaded between the left sides of the three fixing blocks (8). The top surface of the rotating block (10) is a beveled surface. The rotating ring (9) is in contact with the rotating block (10).

2. A high-pressure contrast injection syringe according to claim 1, characterized in that, The syringe body (1) is made of a highly transparent material.

3. A high-pressure contrast injection syringe according to claim 2, characterized in that, It also includes anti-slip texture (6), and the outer wall of the syringe body (1) is connected with three anti-slip textures (6) for anti-slip purposes.

4. A high-pressure contrast injection syringe according to claim 3, characterized in that, It also includes a support block (12), a second torsion spring (13) and a movable block (14). The support block (12) is symmetrically connected to the outside of the threaded sleeve (4). The movable block (14) is rotatably connected to the support block (12). Two second torsion springs (13) are connected between the movable block (14) and the support block (12).

5. A high-pressure contrast injection syringe according to claim 4, characterized in that, It also includes a support ring (15), a return spring (16) and a buffer ring (17). The support ring (15) is connected to the left side of the syringe body (1). The support ring (15) is connected to a buffer ring (17) for damping the syringe body (1) by multiple return springs (16).

6. A high-pressure contrast injection syringe according to claim 5, characterized in that, It also includes a compression spring (18) and a buffer block (19). The right side of the fixed block (8) is connected to the buffer block (19) by two compression springs (18).

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