Injection needle cylinder for high-pressure radiography injector
By setting a coaxial convex ring on the inner side wall of the injection syringe of the high-pressure contrast syringe, the problem of bolus distance offset is solved, and the actual position of bolus distance is corrected in real time without changing the host hardware structure, which improves feedback credibility.
Patent Information
- Application Number
- CN202421934470.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-08-09
AI Technical Summary
During the use of existing high-pressure contrast syringes, the bolt distance offset causes the program presets to be inconsistent with the actual situation. It is difficult for the existing technology to feedback the actual physical position of the bolt distance in real time without adjusting the host hardware structure.
There are three coaxially arranged convex rings on the inner side wall of the liquid chamber of the injection syringe, namely the first, second and third convex rings. The jump pressure is generated during the bouncing process of the host machine through the hindering action of the convex ring, and the physical position of the push rod is corrected in real time.
It realizes the actual physical location of the bouncing distance with high reliability without changing the host hardware structure, which is suitable for equipment upgrades and transformations that have been configured to the hospital.
Smart Images
Figure CN223183865U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to consumables of medical equipment, in particular to an injection syringe for a high-pressure radiographic injector. Background Art
[0002] High-pressure contrast injectors are high-precision, high-cost, and highly monitored medical devices. Once deployed in hospitals and other institutions, they are rarely replaced for minor hardware adjustments, unless under special circumstances. In actual medical use, medical staff must closely monitor injection progress. However, after a certain period of use, the pressure push rod of the main unit may physically deviate, resulting in a discrepancy between the programmed injection distance and the actual injection distance.
[0003] If effective feedback on the actual physical displacement of the injection distance is required for each injection, relying solely on automatic program correction is less reliable. Existing technologies typically add a physical distance measurement accessory to the host computer, which then feeds the actual physical displacement back to the host computer program. However, as mentioned above, hardware adjustments to the host computer are generally difficult to make after the mechanism has been deployed.
[0004] Therefore, the industry needs to develop a technical solution that does not adjust the host hardware structure and can actually feedback the actual physical information of the injection distance. Utility Model Content
[0005] The purpose of the utility model is to provide an injection syringe for a high-pressure radiographic injector, so as to solve the problems existing in the above-mentioned prior art.
[0006] The utility model discloses an injection syringe for a high-pressure radiographic injector. The inner side wall of a liquid containing cavity is provided with a plurality of coaxially arranged convex rings.
[0007] The number of raised rings is three.
[0008] The convex ring close to the injection end is the third convex ring, the convex ring away from the injection end is the first convex ring, and the second convex ring is arranged in the middle position between the first convex ring and the third convex ring; and the first convex ring protrudes the largest distance to the axis, and the third convex ring protrudes the smallest distance to the axis.
[0009] The protruding distance of the first convex ring is 1.2-1.5 mm; the protruding distance of the second convex ring is 0.9-1.1 mm; and the protruding distance of the third convex ring is 0.5-0.8 mm.
[0010] The protruding distance of the first convex ring is 1.3 mm; the protruding distance of the second convex ring is 1.0 mm; and the protruding distance of the third convex ring is 0.7 mm.
[0011] The syringe for a high-pressure contrast injection device described in this utility model has the advantage of being able to utilize sudden pressure changes to provide feedback to the host computer during the injection process, simply by modifying the internal structure of the consumable. This process is independent of software, resulting in high reliability. Furthermore, no hardware changes are required to the host computer, making it particularly suitable for upgrading existing devices in hospitals. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of an injection syringe.
[0013] Figure 2 It is a schematic diagram of the cross-sectional structure of an injection syringe in the prior art.
[0014] Figure 3 It is a schematic diagram of the injection distance and pressure feedback curve of the injection syringe in the prior art.
[0015] Figure 4 It is a schematic cross-sectional structural diagram of the injection syringe in the utility model.
[0016] Figure 5 It is a schematic cross-sectional view of the structure of the injection syringe and the piston after they are matched in the utility model.
[0017] Figure 6 It is a schematic diagram of the injection distance and pressure feedback curve of the injection syringe in the utility model.
[0018] Reference numerals:
[0019] 10-injection syringe, 11-first convex ring, 12-second convex ring, 13-third convex ring. DETAILED DESCRIPTION
[0020] like Figure 1 and Figure 4 As shown, the syringe barrel for a high-pressure radiographic syringe described in the present invention has three coaxially arranged raised rings on the inner sidewall of the liquid chamber. These are a first raised ring 11, a second raised ring 12, and a third raised ring 13. The third raised ring 13 is located near the injection end, while the first raised ring 11 is located away from the injection end. The second raised ring 12 is located midway between the first and third raised rings 11 and 13.
[0021] The first raised ring 11 protrudes the most from the axis, while the third raised ring 13 protrudes the least from the axis. Specifically, the first raised ring 11 protrudes by 1.2 to 1.5 mm, preferably 1.3 mm. The second raised ring 12 protrudes by 0.9 to 1.1 mm, preferably 1.0 mm. The third raised ring 13 protrudes by 0.5 to 0.8 mm, preferably 0.7 mm.
[0022] In existing technology, high-pressure contrast injection systems are already programmed to monitor injection pressure in real time, so the present invention does not require any modification to the computer program. The injection pressure during injection is greater than blood pressure, so the output pressure is sufficiently high, and the small size of the protrusion does not interfere with injection safety.
[0023] like Figure 5 and Figure 6 As shown, during the injection process of the host, the injection syringe for a high-pressure angiography syringe described in the utility model will generate three corresponding jump pressures due to the obstruction of the piston by three convex rings, so that the host can know the current actual physical position of the push rod in real time, and thus can promptly correct the position offset from the program.
[0024] As a comparative example, the existing scheme in the prior art has the following structure and pressure conditions: Figures 1 to 3 As shown, the inner wall of the liquid chamber is relatively smooth, so the changes in the injection distance and pressure feedback are also smooth and without jumps.
[0025] Those skilled in the art can make various other corresponding changes and deformations based on the technical solutions and concepts described above, and all of these changes and deformations should fall within the scope of protection of the claims of this utility model.
Claims
1. A syringe for a high-pressure radiographic injector, characterized in that: A plurality of coaxially arranged convex rings are provided on the inner side wall of the liquid chamber; The number of raised rings is three; The convex ring close to the injection end is the third convex ring (13), the convex ring away from the injection end is the first convex ring (11), and the second convex ring (12) is arranged at an intermediate position between the first convex ring (11) and the third convex ring (13); and the first convex ring (11) protrudes the greatest distance toward the axis, while the third convex ring (13) protrudes the least distance toward the axis.
2. The syringe for a high-pressure radiographic injector according to claim 1, characterized in that: The protruding distance of the first convex ring (11) is 1.2 to 1.5 mm; the protruding distance of the second convex ring (12) is 0.9 to 1.1 mm; and the protruding distance of the third convex ring (13) is 0.5 to 0.8 mm.
3. The syringe for a high-pressure radiographic injector according to claim 2, characterized in that: The protruding distance of the first convex ring (11) is 1.3 mm; the protruding distance of the second convex ring (12) is 1.0 mm; and the protruding distance of the third convex ring (13) is 0.7 mm.